JP2014111878A - Horizontal drain piping washing unit and toilet bowl system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a horizontal drain piping washing unit capable of reducing clogging caused by foreign matter accumulation or urolith adhesion in a horizontal drain piping while striving for water saving, and a toilet bowl system.SOLUTION: A horizontal drain piping washing unit 100a is connected to a horizontal drain piping 16 which is provided with inclination and joined to respective exhaust ports of a plurality of toilet bowls. The horizontal drain piping washing unit 100a comprises: a tank 105 which is provided on the upstream side of a junction between a toilet bowl installed on the upstream side of the inclination among the plurality of toilet bowls and the horizontal drain piping 16 and can store water; and instantaneous flow stabilizing means 140 which is arranged on the downstream side of the tank 105 and on the upstream side of the horizontal drain piping 16 and elongates the time in which water discharged from the tank 105 has the maximum instantaneous flow rate.

Description

  Aspects of the present invention generally relate to a horizontal drainage pipe cleaning unit and a toilet system for cleaning horizontal drainage pipes in a space where, for example, urinals are connected.

  For example, in a horizontal drainage pipe of a urinal, a gravity flow type drainage form having a gradient of 1/50 or 1/100 is used. Concerning the amount of wash water supplied from the toilet, water saving is achieved to the minimum amount. For this reason, the horizontal drainage pipe is cleaned or filth is transported with a small amount of water.

For example, there is a filth carrier system that sweeps filth, foreign matter, urine stones, etc. accumulated in the pipe by flowing a large amount of water into the horizontal drainage pipe of the toilet (Patent Document 1). In addition, there is a drainage piping system that removes foreign matter and prevents clogging by flowing pressurized water through a drainage pipe (Patent Document 2). In addition, there is a toilet unit with a sterilizing water supply function that supplies a high concentration or a large amount of sterilized water to the toilet at the beginning of the night, and a low concentration or a small amount of sterilized water after that at the second time (Patent Document). 3).
However, since the amount of washing water supplied from the toilet is conserved to the limit, accumulation of foreign matters and generation of urine stones may become a problem in the horizontal drainage pipe.

The mechanism of adhesion of urine stones to the horizontal drainage pipe is, for example, as follows.
That is, when urination is performed in the toilet, urine flows into the horizontal drainage pipe. Then, urine stays in the staying water in the horizontal drainage pipe. At this time, in the water-saving toilet, urine is not diluted by the drainage but stays in the horizontal drainage pipe with a high concentration.
Generally, bacteria such as bacilli are present in toilet bowls and horizontal drainage pipes. Urine contains a large amount of urea. When bacteria are present in the accumulated water in the horizontal drainage pipe, urea is decomposed into ammonia and carbon dioxide by the action of the enzyme urease contained in the bacteria. At this time, if the amount of ammonia to be produced is large, ammonia will contribute to odor. In addition, when ammonia is generated, it dissolves in the liquid adhering to the horizontal drainage pipe and the accumulated water in the toilet. Then, the pH of the liquid rises. When the pH rises, the calcium ions contained in the liquid adhering to the horizontal drainage pipe and the accumulated water in the toilet bowl are transformed into carbonates and phosphates and deposited. The precipitated carbonate and phosphate adhere as urine stones in the horizontal drainage pipe and cause clogging.

  In addition, in order to suppress the accumulation of foreign matters and generation of urine stones in the horizontal drainage pipe, maintenance work of the horizontal drainage pipe by a high pressure washer may be performed. On the other hand, reduction and simplification of the maintenance work of the horizontal drainage pipe are desired.

  Furthermore, there is a urinal system in which a tank is provided on the back side of the wall surface on which the urinal is installed (Patent Document 4). In the urinal system described in Patent Document 4, the wash water stored in the tank is periodically flowed into the horizontal drainage pipe. In this case, the instantaneous flow rate of the cleaning water is determined by the potential energy at the height where the tank is installed. The head of the washing water descends as time passes after the washing water is discharged from the tank. Therefore, the maximum instantaneous flow rate of cleaning water is generated at the initial stage of water discharge. Thereafter, the instantaneous flow rate of the cleaning water rapidly decreases.

  For this reason, the cleaning water with the maximum instantaneous flow rate contributes to the upstream side of the horizontal drainage pipe, and flushes dirt, foreign matter, urine stone, and the like. On the other hand, the wash water reaches the downstream side of the horizontal drainage pipe at a flow rate that is lower than the maximum instantaneous flow rate generated at the initial stage of water discharge. For this reason, the cleaning water may not be able to wash away dirt, foreign matter, urine stones, and the like accumulated on the downstream side of the horizontal drainage pipe. Moreover, the instantaneous flow rate of the wash water at the later stage of the water discharge is lower than the instantaneous flow rate of the wash water at the initial stage of the water discharge. Therefore, even in the latter stage of the water discharge, the washing water may not be able to wash away dirt, foreign matter, urine stones, etc. that have accumulated on the downstream side of the horizontal drainage pipe.

  On the other hand, increasing the amount of cleaning water discharged from the tank and increasing the instantaneous flow rate as a whole can be considered as one measure. However, this will increase the size of the tank. There is room for improvement in this regard. There is also room for improvement in terms of saving water.

JP 2001-303639 A JP 2008-25245 A Japanese Patent No. 3480173 JP 2010-121276 A

  The present invention has been made based on recognition of such a problem, and is a horizontal drainage pipe cleaning unit capable of reducing clogging due to foreign matter accumulation or urine stone adhesion in the horizontal drainage pipe while saving water. And to provide a toilet system.

  A first invention is a horizontal drainage pipe cleaning unit connected to a horizontal drainage pipe that is provided with a gradient and is joined to each drainage port of a plurality of toilets, wherein the gradient of the plurality of toilets A tank provided on the upstream side of the joint between the toilet bowl installed on the upstream side and the horizontal drainage pipe, capable of storing water, and disposed on the downstream side of the tank and the upstream side of the horizontal drainage pipe, A horizontal drainage pipe cleaning unit comprising: instantaneous flow rate stabilization means for increasing the time during which water discharged from the tank has a maximum instantaneous flow rate.

  According to this horizontal drainage pipe cleaning unit, the degree of change with time of the instantaneous flow rate of the cleaning water supplied to the horizontal drainage pipe is reduced by the instantaneous flow rate stabilizing means. For this reason, a relatively large amount of flush water flows also downstream of the horizontal drainage pipe. Therefore, the entire horizontal drainage pipe can be washed more reliably. As a result, the horizontal drainage pipe can be washed with a relatively small amount of washing water, and the tank can be prevented from being enlarged.

  According to a second aspect of the present invention, in the first aspect, the instantaneous flow rate stabilization means lengthens the time during which the water discharged from the tank has an instantaneous flow rate of 70% or more of the maximum instantaneous flow rate. It is a drainage pipe cleaning unit.

  According to this horizontal drainage pipe cleaning unit, the degree of change with time of the instantaneous flow rate of the cleaning water supplied to the horizontal drainage pipe is reduced by the instantaneous flow rate stabilizing means. Therefore, the maximum instantaneous flow rate itself can be suppressed. Therefore, the lower half of the pipe where foreign matter is accumulated or urine stones can be efficiently washed without filling the pipe with water. As a result, the horizontal drainage pipe can be washed with a relatively small amount of washing water, and the tank can be prevented from being enlarged.

  A third invention is the horizontal drainage pipe cleaning unit according to the first or second invention, wherein the instantaneous flow rate stabilization means is a first pipe connected to the tank and having a U shape. .

  According to this horizontal drainage pipe cleaning unit, compared with the case where the horizontal drainage pipe cleaning unit does not have the first pipe, the change in the instantaneous flow rate with respect to the temporal change is the first having the U shape. It becomes smaller by piping. Therefore, the entire horizontal drainage pipe can be more reliably cleaned with a relatively simple structure. In addition, the first pipe having a U-shape can prevent bad odors, pests, and the like from entering the toilet room.

  According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the apparatus further comprises a communication pipe having an upstream end connected to the tank and a downstream end connected to the horizontal drainage pipe, and the instantaneous flow rate stabilization The means is a horizontal drainage pipe cleaning unit characterized in that it is a throttle part provided in a part of the communication pipe and having a reduced diameter.

  According to the horizontal drainage pipe cleaning unit, resistance (water resistance) when water passes is generated in the throttle. Thereby, the change of the instantaneous flow rate with respect to the change with time can be reduced. Therefore, the entire horizontal drainage pipe can be more reliably cleaned with a relatively simple structure.

  According to a fifth aspect of the present invention, in the first or second aspect of the invention, the apparatus further comprises a communication pipe having an upstream end connected to the tank and a downstream end connected to the horizontal drainage pipe, and the instantaneous flow rate stabilization The means is a horizontal drainage pipe cleaning unit characterized by being a bellows-like bellows-like pipe portion provided in a part of the communication pipe.

  According to this horizontal drainage pipe cleaning unit, resistance (water resistance) when water passes is generated in the bellows-like pipe section. Thereby, the change of the instantaneous flow rate with respect to the change with time can be reduced. Therefore, the entire horizontal drainage pipe can be more reliably cleaned with a relatively simple structure.

  A sixth invention is the first or second invention, wherein the upstream end is connected to the tank and the downstream end is connected to the horizontal drainage pipe, and is connected to the connection pipe. An instantaneous flow rate stabilizing means provided at a connecting portion between the connecting pipe and the vent pipe, and an umbrella-shaped cover portion that restricts a cross-sectional area of the connecting pipe. This is a horizontal drainage pipe cleaning unit.

  According to the horizontal drainage pipe cleaning unit, the cross-sectional area of the communication pipe is narrowed by the cover portion. Thereby, the change of the instantaneous flow rate with respect to the change with time can be reduced. Therefore, the entire horizontal drainage pipe can be more reliably cleaned with a relatively simple structure. The cover part suppresses the water discharged from the tank from entering the vent pipe when flowing through the connecting pipe to the horizontal drainage pipe. Thereby, the freedom degree of the design of the connection of communication piping and a ventilation pipe can be improved.

  According to a seventh aspect, in the third aspect, the first pipe and the first connecting portion are connected to each other, the second pipe for guiding the air is connected to the second connecting portion, and the second pipe extends in the vertical direction. 3, further comprising a third pipe having one end having a cleaning port and the other end connected to the horizontal drainage pipe at a third connection portion, and extending from the lower side to the upper side in the vertical direction. The horizontal drainage pipe cleaning unit is characterized in that the first connection portion, the second connection portion, and the cleaning port are provided in this order.

  According to this drain pipe cleaning unit, even when the high pressure cleaning water sprayed from the high pressure washer flows through the third pipe and flows out from the cleaning port during the high pressure cleaning in the horizontal drain pipe, the high pressure cleaning water is not It can suppress flowing into the inside of the 1st piping through the 1st connection part. Moreover, it can suppress that the high voltage | pressure washing water flows into the inside of 2nd piping through a 2nd connection part.

  In an eighth aspect based on the seventh aspect, the third pipe has a linear shape extending over the first connecting portion, the second connecting portion, and the portion provided with the cleaning port. This is a horizontal drainage pipe cleaning unit characterized in that it is formed as described above.

  According to this horizontal drainage pipe cleaning unit, the first connection portion, the second connection portion, and the portion provided with the cleaning port are arranged in a straight line, so that the high-pressure cleaning water is supplied to the first drainage pipe cleaning unit. It can suppress more that it flows into the inside of the 1st piping through a connection part. Moreover, it can suppress more that the high-pressure washing water flows into the 2nd piping through the 2nd connection part.

  9th invention is the horizontal drainage as described in any one of Claims 1-8, the horizontal drainage pipe which was provided with the some toilet bowl, and was provided with the gradient, and was joined to each drain outlet of the said multiple toilet bowls A toilet system comprising: a pipe cleaning unit; and a water supply pipe connected to each of the plurality of toilet bowls and the tank to supply water.

According to this toilet system, the foreign matter staying inside the horizontal drainage pipe can be efficiently washed away, and the inside of the horizontal drainage pipe can be washed efficiently.
In addition, when high-pressure cleaning is performed in the horizontal drainage pipe, even when high-pressure cleaning water sprayed from the high-pressure cleaner passes through the third pipe and flows out from the cleaning port, the high-pressure cleaning water passes through the first connection portion. The flow into the first pipe can be suppressed. Moreover, it can suppress that the high voltage | pressure washing water flows into the inside of 2nd piping through a 2nd connection part.

  ADVANTAGE OF THE INVENTION According to the aspect of this invention, the horizontal drainage piping washing | cleaning unit and toilet system which can reduce clogging by the foreign material accumulation in a horizontal drainage piping, or urine stone adhesion, etc., aiming at water saving are provided.

It is a mimetic diagram showing a toilet system provided with a horizontal drainage pipe washing unit concerning an embodiment of the invention. It is a block diagram which illustrates the principal part structure of the horizontal drainage piping washing unit concerning this embodiment. It is a schematic diagram which illustrates the specific example of the horizontal drainage piping washing | cleaning unit concerning this embodiment. It is a schematic diagram which illustrates the specific example of the horizontal drainage piping washing | cleaning unit concerning this embodiment. It is a schematic diagram which illustrates the specific example of the horizontal drainage piping washing | cleaning unit concerning this embodiment. It is a flowchart figure which illustrates the process of the high pressure washing | cleaning of the horizontal drainage piping of this embodiment. It is a schematic diagram which illustrates the example of the apparatus used for the high voltage | pressure washing | cleaning of horizontal drainage piping. It is typical sectional drawing in cut surface AA represented to Fig.4 (a). It is a schematic diagram which illustrates the other specific example of the horizontal drainage piping washing | cleaning unit concerning this embodiment. It is typical sectional drawing showing the modification of a trap piping connection part and a vent pipe connection part. It is a graph which illustrates the relationship between the instantaneous flow volume of washing water, and the presence or absence of trap piping.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
Drawing 1 is a mimetic diagram showing a toilet system provided with a horizontal drainage pipe washing unit concerning an embodiment of the invention.
FIG. 2 is a block diagram illustrating the main configuration of the horizontal drainage pipe cleaning unit according to this embodiment.
Fig.1 (a) is the typical top view which looked at the toilet system concerning this embodiment from the front. FIG.1 (b) is the typical top view which looked at the toilet system concerning this embodiment from the left side.

  The toilet system 10 according to the embodiment of the present invention includes a lining unit 20, a water supply pipe 13, a urinal 15, a horizontal drainage pipe 16, a cleaning flush valve 17, a horizontal drainage pipe cleaning unit 100, Is provided.

The lining unit 20 is installed on the wall surface 30 of the toilet room. The urinal 15 is attached to the front surface (wall surface) 21 of the lining unit 20.
The toilet system 10 according to the present embodiment is not limited to including the urinal 15. The toilet system 10 according to the present embodiment may include a toilet bowl instead of the urinal 15. In the following description, a case where the toilet system 10 includes the urinal 15 will be described as an example.
The water supply pipe 13, the horizontal drainage pipe 16, the cleaning flush valve 17, and the horizontal drainage pipe cleaning unit 100 are provided inside the lining unit 20.

  In the toilet system 10 according to the present embodiment, a plurality of urinals 15 are arranged in a row. Each drain outlet of the plurality of urinals 15 is joined to the horizontal drainage pipe 16 and the joint 18 via a flange and a piping member (not shown). A horizontal drainage pipe cleaning unit 100 is provided upstream of the joint 18 between the horizontal drainage pipe 16 and the urinal 15.

In the toilet system 10 illustrated in FIGS. 1A and 1B, the horizontal drainage pipe cleaning unit 100 is behind the urinal 15 provided at the leftmost end of the plurality of urinals 15 (back side). Is provided.
In the specification of the present application, for example, a direction that is horizontal with respect to the floor surface of the toilet room, for example, the front side is “front” and the back side is “rear” when viewed from the front of the urinal 15. . For example, in the horizontal direction with respect to the floor of the toilet room, the right side is “right side” and the left side is “left side” as viewed from the front of the urinal 15. For example, in the vertical direction perpendicular to the floor surface of the toilet room, the upper side is “upper” and the lower side is “lower” when viewed from the front of the urinal 15.

  The horizontal drainage pipe cleaning unit 100 includes a solenoid valve 101, a control unit 103, a tank 105, a trap pipe (first pipe) 110, a vent pipe (second pipe) 120, and a connection pipe (third). ) 130). The water supply pipe 13 is connected to the tank 105 and the plurality of urinals 15, and can supply water to each of the tank 105 and the plurality of urinals 15. A washing flush valve 17 is provided in each of the plurality of urinals 15.

  The horizontal drainage pipe 16 is provided with a gradient. In the horizontal drainage pipe 16 shown in FIG. 1A, a gradient is provided that descends from the urinal 15 provided at the leftmost end to the urinal 15 provided at the rightmost end among the plurality of urinals 15. It has been. Therefore, as shown by the arrow A1 in FIG. 1, the wash water supplied from the urinal 15 is a urinal provided at the rightmost end from the urinal 15 provided at the leftmost end among the plurality of urinals 15. It flows toward 15. Note that the direction of the gradient of the horizontal drainage pipe 16 is not limited to this.

  If the gradient of the horizontal drainage pipe 16 can be secured relatively large, foreign matter and urine hardly remain on the bottom surface of the horizontal drainage pipe 16. Moreover, urine-derived deposits are difficult to stack. However, in order to connect the urinal 15 provided with a drain outlet at a relatively low position with the horizontal drainage pipe 16 on the floor and to secure as many connections as possible, it is usually difficult to take a gradient above a predetermined level. is there. In the general horizontal drainage pipe 16, a gradient of 1/50 or 1/100 is provided.

  The horizontal drainage pipe cleaning unit 100 is provided behind the urinal 15 installed on the most upstream side among the plurality of urinals 15 connected in series. That is, the horizontal drainage pipe cleaning unit 100 is upstream of the joint 18 between the urinal 15 and the horizontal drainage pipe 16 installed on the most upstream side among the plurality of urinals 15 connected in series. Is provided.

  When the normal urinal 15 is used, the cleaning flush valve 17 is opened at a predetermined timing, and the bowl surface of the urinal 15 is cleaned. At this time, the solenoid valve 101 is in a closed state. The predetermined timing is, for example, a timing at which a preset time interval elapses. Alternatively, the predetermined timing may be a timing at which the usage frequency of the urinal 15 is counted to reach a certain count. Alternatively, the predetermined timing may be a timing for each use of the urinal 15.

  However, when the amount of washing water supplied from the urinal 15 is reduced, accumulation of foreign matters and generation of urine stones may be a problem in the horizontal drainage pipe 16. Further, in order to suppress the accumulation of foreign matters and generation of urine stones in the horizontal drainage pipe 16, maintenance work of the horizontal drainage pipe 16 by a high pressure washer may be performed. Therefore, reduction and simplification of maintenance work of the horizontal drainage pipe 16 are desired.

On the other hand, in the toilet system 10 according to the present embodiment, the joint 18 between the urinal 15 installed on the most upstream side among the plurality of urinals 15 connected in series and the horizontal drainage pipe 16. A horizontal drainage pipe cleaning unit 100 is provided on the upstream side.
For example, the control unit 103 opens the solenoid valve 101 at a preset time. Then, water is supplied from the water supply pipe 13 to the tank 105. When a certain amount of water accumulates in the tank 105, the float of the ball tap 105a (see FIG. 2) rises and the solenoid valve 101 closes. The capacity of the tank 105 is, for example, about 8.5 liters. For detection and control of the water level in the tank 105, a float switch (not shown) may be used.

  Thereby, the water supply from the water supply piping 13 to the tank 105 stops. When the control unit 103 issues a signal for automatically opening and closing the cleaning lever 105b (see FIG. 2) after the water supply is stopped, the drain valve 105c (see FIG. 2) provided in the tank 105 is opened. As a result, the cleaning water stored in the tank 105 is supplied to the horizontal drainage pipe 16. By the discharge of the washing water, foreign substances staying in the horizontal drainage pipe 16 can be pushed away. The number of discharges of the wash water can be set according to the situation of the installation site of the horizontal drainage pipe cleaning unit 100, and is, for example, about 1 to 12 times / day.

  As shown in FIG. 2, when the sterilizing water generating device 102 is provided in the flow path between the electromagnetic valve 101 and the tank 105, following the water discharge from the tank 105 described above, the control unit 103 The electromagnetic valve 101 is opened again, the sterilizing water generator 102 generates sterilizing water, and the sterilizing water is stored in the tank 105. The sterilizing water generator 102 will be described in detail later.

Next, a specific example of the horizontal drainage pipe cleaning unit 100 according to the present embodiment will be described with reference to the drawings.
3 to 5 are schematic views illustrating specific examples of the horizontal drainage pipe cleaning unit according to this embodiment.
FIG. 3 and FIG. 4A are schematic plan views of the horizontal drainage pipe cleaning unit according to the present embodiment as viewed from the front. FIG.4 (b) is the typical top view which looked at the horizontal drainage piping washing | cleaning unit concerning this embodiment from the left side. FIG.4 (c) is the typical top view which looked at the horizontal drainage piping washing | cleaning unit concerning this embodiment from the downward direction. Fig.5 (a) and FIG.5 (b) are typical perspective views which looked at the horizontal drainage piping washing | cleaning unit concerning this embodiment from diagonally upward.

As described above with reference to FIGS. 1 and 2, the horizontal drainage pipe cleaning unit 100 includes the tank 105, the trap pipe 110, the vent pipe 120, and the connection pipe 130.
One end of the trap pipe 110 is connected to the lower part of the tank 105. The other end of the trap pipe 110 is connected to a connection pipe 130 at a trap pipe connecting portion (first connecting portion) 111. For example, “VP40A (JIS standard)” or the like is used as the trap pipe 110.

  As shown in FIG. 3 and FIG. 4A, the trap pipe 110 has a bent portion, and can form sealed water inside the trap pipe 110 itself. Thereby, the trap pipe 110 can prevent bad odors, pests and the like from entering the toilet room or the like from the horizontal drainage pipe 16 or the like.

  One end of the vent pipe 120 is connected to the connection pipe 130 at the vent pipe connecting portion (second connecting portion) 121. The other end of the vent pipe 120 passes through a vent stand pipe (not shown), and is open to the outdoors, for example, on the roof of a building. For example, the vent pipe 120 can emit a bad odor from the horizontal drainage pipe 16 or the like to the outside, or can introduce air into the horizontal drainage pipe 16 from the outside.

  One end of the connection pipe 130 is connected to the horizontal drainage pipe 16 at a connection pipe connection part (third connection part) 134. The other end of the connection pipe 130 is opened at the cleaning port 131. In a normal use state other than during cleaning of the horizontal drainage pipe 16 and the like, the cleaning port 131 is closed by a lid. When the operator performs maintenance work on the horizontal drainage pipe 16 using a high pressure washer, the operator removes the lid attached to the cleaning port 131 and inserts the high pressure washer through the cleaning port 131. Thereby, the maintenance work of the horizontal drainage pipe 16 is performed. For example, “VP50A (JIS standard)” or the like is used as the connection pipe 130.

  As the horizontal drainage pipe 16, for example, “VP65A (JIS standard)” to “VP100A (JIS standard)” or the like is used. The horizontal drainage pipe 16 differs depending on the situation of the installation site of the horizontal drainage pipe cleaning unit 100.

Here, high-pressure cleaning of the horizontal drainage pipe 16 will be described with reference to the drawings.
FIG. 6 is a flowchart illustrating the process of high-pressure cleaning of the horizontal drainage pipe according to this embodiment.
FIG. 7 is a schematic view illustrating a specific example of an apparatus used for high-pressure cleaning of a horizontal drainage pipe. FIG. 7A is a schematic perspective view illustrating a specific example of the device cleaning wire. FIG. 7B is a schematic perspective view illustrating a specific example of the high-pressure cleaning nozzle.

  As shown in FIG. 6, the operator confirms the internal state of the horizontal drainage pipe 16 from the cleaning port 131 using, for example, a fiber scope before cleaning the horizontal drainage pipe 16 (high pressure cleaning). (Step S101). An operator selects the apparatus etc. which are used at the time of cleaning suitably by confirming the condition inside the horizontal drainage piping 16.

  Subsequently, the operator removes the urinal 15 from the front surface 21 of the lining unit 20 (step S103). However, the operator does not necessarily have to remove the urinal 15.

  Subsequently, the worker uses, for example, the equipment cleaning wire 170 shown in FIG. 7A according to the state inside the horizontal drainage pipe 16 to penetrate the inside of the horizontal drainage pipe 16 or the horizontal drainage. The street inside the pipe 16 is improved (step S105). As illustrated in FIG. 7A, the device cleaning wire 170 of this specific example includes a flexible wire 171 and a head 173 provided at one end of the wire 171. The head 173 is provided with an ejection port 175.

  When using the device cleaning wire 170, the operator inserts the head 175 of the device cleaning wire 170 into the connection pipe 130 through the cleaning port 131. The equipment cleaning wire 170 injects high-pressure water from the injection port 175 in the direction of the arrow A2 shown in FIG. 7A, and proceeds in the direction of the arrow A3 shown in FIG. Thereby, the equipment cleaning wire 170 can remove urine stones and the like adhering to the inside of the horizontal drainage pipe 16 and penetrate the inside of the horizontal drainage pipe 16. At this time, water injected from the injection port 175 may flow out of the cleaning port 131 through the inside of the connection pipe 130.

  Subsequently, the operator performs high-pressure cleaning on the inside of the horizontal drainage pipe 16 using, for example, the high-pressure cleaning nozzle 180 illustrated in FIG. 7B (step S107). As shown in FIG. 7B, the high-pressure washing nozzle 180 of this specific example includes a flexible hose 181 and a nozzle portion 183 provided at one end of the hose 181.

  The operator inserts the high-pressure washing nozzle 180 into the connection pipe 130 through the cleaning port 131. At this time, the operator inserts the high-pressure washing nozzle 180 into the connection pipe 130 with the nozzle portion 183 at the head. At the time of high pressure cleaning, high pressure cleaning water is sprayed from a spray hole (not shown) provided in the nozzle portion 183. Thereby, the high-pressure washing nozzle 180 can remove urine stones and the like adhering to the inside of the horizontal drainage pipe 16.

  Subsequently, if the urinal 15 has been removed in the process described above with respect to step S103, the operator attaches the urinal 15 to the front surface 21 of the lining unit 20 (step S109). This completes the high-pressure cleaning of the horizontal drainage pipe 16 of the present embodiment (step S111).

  As described above with respect to step S <b> 105, the equipment cleaning wire 170 ejects high-pressure water from the ejection port 175. As described above with respect to step S107, the high-pressure cleaning nozzle 180 injects high-pressure cleaning water from an injection hole (not shown). At least one of these timings, the jetted water may flow out of the cleaning port 131 through the inside of the connection pipe 130.

  On the other hand, in this specific example, as shown in FIG. 3, FIG. 4 (a), FIG. 4 (b), FIG. 5 (a) and FIG. It is provided below the trachea connection part 121 and the cleaning port 131. The cleaning port 131 is provided above the trap pipe connecting part 111 and the vent pipe connecting part 121. The vent pipe connecting portion 121 is provided between the trap pipe connecting portion 111 and the cleaning port 131 in the vertical direction. That is, the trap pipe connection part 111, the vent pipe connection part 121, and the cleaning port 131 are provided in this order from the bottom to the top.

  According to this, even when the high-pressure washing water sprayed from the high-pressure washing machine flows out of the cleaning port 131 through the inside of the connection pipe 130 during the high-pressure washing, the high-pressure washing water passes through the trap pipe connection portion 111 and the trap pipe. The flow into the inside of 110 can be suppressed. Further, the high-pressure washing water can be prevented from flowing into the ventilation pipe 120 through the ventilation pipe connecting portion 121.

  As shown in FIGS. 4A, 5A, and 5B, the connection pipe 130 is provided with a trap pipe connection portion 111, a vent pipe connection portion 121, and a cleaning port 131. Extending substantially vertically, and is formed in a substantially linear shape. According to this, it is possible to further suppress the high-pressure washing water from flowing into the trap pipe 110 through the trap pipe connection portion 111. In addition, it is possible to further suppress the high-pressure washing water from flowing into the ventilation pipe 120 through the ventilation pipe connecting portion 121.

FIG. 8 is a schematic cross-sectional view taken along the cutting plane AA shown in FIG.
As shown in FIGS. 3, 4 (a), 5 (a), and 5 (b), the connection pipe 130 has a bent portion 133 at the lower end. The connecting pipe 130 is bent at a substantially right angle at the bent portion 133 and is connected to the horizontal drainage pipe 16 at the connecting pipe connecting portion 134. Therefore, the connection pipe 130 is connected to the horizontal drainage pipe 16 in a substantially horizontal direction or in a direction substantially parallel to the axial direction of the horizontal drainage pipe 16.

  As described above with reference to FIGS. 3 to 5, for example, “VP50A (JIS standard)” or the like is used as the connection pipe 130. As the horizontal drainage pipe 16, for example, “VP65A (JIS standard)” to “VP100A (JIS standard)” or the like is used. That is, as shown in FIG. 8, the inner diameter of the connecting pipe 130 is smaller than the inner diameter of the horizontal drainage pipe 16. Specifically, the inner diameter of the portion connected to the bent portion 133 in the connection pipe connection portion 134 is smaller than the inner diameter of the portion connected to the horizontal drainage pipe 16 in the connection pipe connection portion 134. That is, the connection pipe connection part 134 has a throttle part in which the inner diameter on the relatively upstream side (the cleaning port 131 side) is relatively smaller than the inner diameter on the downstream side (the side of the horizontal drainage pipe 16).

  According to this, the wash water discharged from the tank 105 is further increased in flow velocity at the connection pipe connecting portion 134 and guided to the horizontal drainage pipe 16. Thereby, the foreign material staying inside the horizontal drainage pipe 16 can be efficiently washed away, and the inside of the horizontal drainage pipe 16 can be cleaned efficiently. Further, as described above, the connection pipe 130 is connected to the horizontal drainage pipe 16 in a substantially horizontal direction or in a direction substantially parallel to the axial direction of the horizontal drainage pipe 16. Therefore, it is possible to suppress the occurrence of pressure loss in the connection pipe connection part 134 and to suppress the flow rate of the cleaning water discharged from the tank 105 from decelerating in the connection pipe connection part 134. As a result, foreign matters staying in the horizontal drainage pipe 16 can be washed away more efficiently, and the interior of the horizontal drainage pipe 16 can be cleaned more efficiently.

  Further, as shown in FIG. 8, the central axis 130 c of the connection pipe 130 is eccentric downward from the central axis 16 c of the horizontal drainage pipe 16. According to this, the wash water discharged from the tank 105 efficiently flows through the bottom or bottom of the horizontal drainage pipe 16. Therefore, the foreign matter staying at the bottom or bottom of the horizontal drainage pipe 16 can be efficiently washed away, and the bottom or bottom of the horizontal drainage pipe 16 can be efficiently cleaned.

  Of the plurality of urinals 15 connected in series, the urinal 15 installed on the most upstream side (the leftmost urinal 15 in the urinal system 10 shown in FIG. 1) is located upstream of the drain outlet. The washing water supplied from the urinal 15 is unlikely to reach the upstream inside 16a (see FIG. 3) of the drainage pipe 16. Therefore, when the horizontal drainage pipe cleaning unit 100 according to the present embodiment is not provided, foreign matter accumulation and urine stones are likely to be generated in the upstream inside 16 a of the horizontal drainage pipe 16.

  On the other hand, according to the horizontal drainage pipe cleaning unit 100 according to the present embodiment, cleaning water having a higher flow rate is supplied from the tank 105 to the upstream inside 16 a of the horizontal drainage pipe 16. Thereby, also in the upstream inside 16a of the horizontal drainage pipe 16, foreign matter can be efficiently washed away, and the upstream inside 16a of the horizontal drainage pipe 16 can be efficiently cleaned.

Next, another specific example of the horizontal drainage pipe cleaning unit 100 according to the present embodiment will be described with reference to the drawings.
FIG. 9 is a schematic view illustrating another specific example of the horizontal drainage pipe cleaning unit according to this embodiment.
Fig.9 (a) is the typical top view which looked at the horizontal drainage pipe cleaning unit concerning this embodiment from the front. FIG. 9B is a schematic plan view of the horizontal drainage pipe cleaning unit according to the present embodiment as viewed from the left side.

  The horizontal drainage pipe cleaning unit 100 a of this specific example includes a tank 105, a trap pipe (instantaneous flow rate stabilizing means) 110, a vent pipe 120, and a connection pipe 130. The tank 105, the trap pipe 110, and the vent pipe 120 are as described above with reference to FIGS. The trap pipe 110 has a substantially U shape, and can form a sealed water inside the trap pipe 110 itself.

  In this specific example, the pipe from the trap pipe 110 to the connection pipe connection part 134 through the trap pipe connection part 111 and the connection pipe 130 is referred to as a “connection pipe 150”. The connecting pipe 150 is connected to the tank 105 at one end and is connected to the horizontal drainage pipe 16 at the other end.

  As shown in FIG. 9A and FIG. 9B, the connection pipe 130 of this specific example includes a throttle part (instantaneous flow rate stabilizing means) 135, a bellows-like pipe part (instantaneous flow rate stabilizing means) 137, Have The throttle 135 is provided in a part of the connection pipe 150. Specifically, the throttle part 135 is provided in a part of the connection pipe 130. The diameter of the throttle 135 is smaller than the diameter of the connection pipe 130 other than the throttle 135. In other words, the throttle portion 135 has a diameter that is narrower than the diameter of the portion of the connection pipe 130 other than the throttle portion 135.

  The bellows-like piping part 137 is provided in a part of the connecting pipe 150. Specifically, the bellows-like pipe portion 137 is provided in a part of the connection pipe 130. In the specific example shown in FIGS. 9A and 9B, the bellows-like pipe portion 137 is provided between the throttle portion 135 and the bent portion 133 in the connection pipe 130. The bellows-like piping portion 137 has a bellows shape. The bellows-like piping part 137 is formed of an elastic body having elasticity such as rubber. However, the material of the bellows-like piping part 137 is not limited to this.

  As described above with reference to FIGS. 1 and 2, the wash water stored in the tank 105 is supplied to the horizontal drainage pipe 16 at a predetermined timing. The cleaning water supplied to the horizontal drainage pipe 16 pushes away foreign substances staying inside the horizontal drainage pipe 16. At this time, the instantaneous flow rate of the cleaning water is determined by the potential energy at the height where the tank 105 is installed. The cleaning water head descends as time passes after the cleaning water is discharged from the tank 105. Therefore, the maximum instantaneous flow rate of cleaning water is generated at the initial stage of water discharge. Thereafter, the instantaneous flow rate of the cleaning water rapidly decreases.

  Therefore, the cleaning water with the maximum instantaneous flow rate contributes to the upstream side of the horizontal drainage pipe 16 and pushes foreign matter, urine stones, and the like. On the other hand, the wash water reaches the downstream side of the horizontal drainage pipe 16 at a flow rate that is lower than the maximum instantaneous flow rate generated at the initial stage of water discharge. Therefore, the washing water may not be able to wash away foreign substances or urine stones that have accumulated on the downstream side of the horizontal drainage pipe 16. Moreover, the instantaneous flow rate of the wash water at the later stage of the water discharge is lower than the instantaneous flow rate of the wash water at the initial stage of the water discharge. For this reason, even if the cleaning water is in the later stage of the water discharge, the cleaning water may not be able to push away foreign substances, urine stones, and the like accumulated on the downstream side of the horizontal drainage pipe 16.

  On the other hand, the horizontal drainage pipe cleaning unit 100a of this specific example includes an instantaneous flow rate stabilizing means 140. The instantaneous flow rate stabilization means 140 is disposed downstream of the tank 105 and upstream of the horizontal drainage pipe 16. The instantaneous flow rate stabilization means 140 increases the time during which the wash water discharged from the tank 105 has the maximum instantaneous flow rate. Further, the instantaneous flow rate stabilizing means 140 reduces the change rate (in this specific example, the decrease rate) of the instantaneous flow rate of the wash water discharged from the tank 105.

  According to this, the degree of change with time of the instantaneous flow rate of the cleaning water supplied to the horizontal drainage pipe 16 is reduced by the instantaneous flow rate stabilizing means 140. Therefore, a relatively large amount of flush water flows also downstream of the horizontal drainage pipe 16. Therefore, the entire horizontal drainage pipe 16 can be more reliably cleaned. As a result, the horizontal drainage pipe 16 can be washed with a relatively small amount of washing water, and the tank 105 can be prevented from being enlarged.

  Specifically, the horizontal drainage pipe cleaning unit 100a of this example includes at least one of the trap pipe 110, the throttle part 135, and the bellows-like pipe part 137.

  In the case where the horizontal drainage pipe cleaning unit 100a has the trap pipe 110, the change in the instantaneous flow rate with respect to the change with time is substantially U compared to the case where the horizontal drainage pipe cleaning unit 100a does not have the trap pipe 110. It becomes smaller by the trap pipe 110 having a letter shape. Therefore, the entire horizontal drainage pipe 16 can be more reliably cleaned with a relatively simple structure. Further, the trap pipe 110 having a substantially U shape can prevent bad odors, pests and the like from entering the toilet room.

  When the horizontal drainage pipe cleaning unit 100 a has the throttle portion 135, a resistance (water resistance) when the cleaning water passes is generated in the throttle 135. Thereby, the change of the instantaneous flow rate with respect to the change with time can be reduced. Therefore, the entire horizontal drainage pipe 16 can be more reliably cleaned with a relatively simple structure.

  When the horizontal drainage pipe cleaning unit 100 a has the bellows-like pipe part 137, resistance (water resistance) when the cleaning water passes occurs in the bellows-like pipe part 137. Thereby, the change of the instantaneous flow rate with respect to the change with time can be reduced. Therefore, the entire horizontal drainage pipe 16 can be more reliably cleaned with a relatively simple structure.

FIG. 10 is a schematic cross-sectional view showing a modified example of the trap pipe connection part and the vent pipe connection part.
FIG. 10 shows the internal structure of the connection pipe 130, and corresponds to a cross-sectional view taken along the cutting plane BB shown in FIG. 9B.

  Similar to the specific example described above with reference to FIG. 9, in this modification, the pipe from the trap pipe 110 to the connection pipe connection part 134 through the trap pipe connection part 111 and the connection pipe 130 is referred to as a “connection pipe 150”.

  In the specific example described above with reference to FIGS. 3 to 5, the trap pipe connecting portion 111 is provided below the vent pipe connecting portion 121, whereas in the present modification shown in FIG. It is provided above the vent pipe connecting portion 121. That is, the vent pipe 120 is connected to the communication pipe 150. As shown in FIG. 10, the vent pipe connection part 121 is provided with a cover part (instantaneous flow rate stabilizing means) 139. The cover part 139 has an umbrella shape. That is, the cover part 139 covers the upper side and the side of the vent pipe connecting part 121.

  As shown in FIG. 10, the cross-sectional area of the connection pipe 130 in the portion where the cover portion 139 is provided is narrower than the cross-sectional area of the connection pipe 130 in the portion where the cover portion 139 is not provided. In other words, the portion where the cover portion 139 is provided has a flow passage cross-sectional area that is narrower than the flow passage cross-sectional area of the connection pipe 130 where the cover portion 139 is not provided.

  According to this modification, the flow path cross-sectional area of the connection pipe 130 is narrowed by the cover portion 139. Thereby, the change of the instantaneous flow rate with respect to the change with time can be reduced. Therefore, the entire horizontal drainage pipe 16 can be more reliably cleaned with a relatively simple structure. The cover part 139 prevents the cleaning water discharged from the tank 105 from entering the vent pipe 120 when it flows to the horizontal drainage pipe 16 through the trap pipe 110 and the connection pipe 130. Thereby, the freedom degree of the design of the connection of the trap piping 110 and the connection piping 130 and the connection of the ventilation pipe 120 and the connection piping 130 can be improved.

FIG. 11 is a graph illustrating the relationship between the instantaneous flow rate of cleaning water and the presence or absence of trap piping.
The vertical axis of the graph shown in FIG. 11 represents the instantaneous flow rate (liter / minute: L / min) of the wash water discharged from the tank 105. The horizontal axis of the graph shown in FIG. 11 represents time (seconds) that has elapsed since the cleaning water was discharged from the tank 105.

  The inventor obtained the change in the instantaneous flow rate of the cleaning water by experiments in the case where the trap pipe 110 is provided and in the case where the trap pipe 110 is not provided. An example of the experimental result is as shown in FIG. That is, according to the example of the experimental result shown in FIG. 11, the maximum instantaneous flow rate F1 when the trap pipe 110 is not provided is about 250 L / min. On the other hand, the maximum instantaneous flow rate F2 when the trap pipe 110 is provided is about 120 L / min.

  As shown in FIG. 11, in the case where the trap pipe 110 is not provided, the time during which the cleaning water has the maximum instantaneous flow rate F1 is instantaneous. On the other hand, when the trap pipe 110 is provided, the time t2 when the cleaning water has the maximum instantaneous flow rate F2 is about 0.3 seconds. That is, the time t2 when the cleaning water has the maximum instantaneous flow rate F2 when the trap pipe 110 is provided is longer than the time when the cleaning water has the maximum instantaneous flow rate F1 when the trap pipe 110 is not provided. Thereby, it turns out that the trap pipe 110 can lengthen the time when the wash water discharged from the tank 105 has the maximum instantaneous flow rate.

  The cleaning water head descends as time passes after the cleaning water is discharged from the tank 105. Therefore, the instantaneous flow rate of the cleaning water occurs at the initial stage of water discharge and then decreases. As shown in FIG. 11, the rate of decrease of the instantaneous flow rate when the trap pipe 110 is provided is lower than the rate of decrease of the instantaneous flow rate when the trap pipe 110 is not provided. That is, the degree (gradient) in which the instantaneous flow rate decreases when the trap pipe 110 is provided is more gradual than the degree (gradient) in which the instantaneous flow rate decreases when the trap pipe 110 is not provided.

  According to this, the degree of change with time of the instantaneous flow rate of the cleaning water supplied to the horizontal drainage pipe 16 is reduced by the trap pipe 110. Therefore, a relatively large amount of flush water flows also downstream of the horizontal drainage pipe 16. Therefore, the entire horizontal drainage pipe 16 can be more reliably cleaned.

  The maximum instantaneous flow rate F2 when the trap pipe 110 is provided is smaller than the maximum instantaneous flow rate F1 when the trap pipe 110 is not provided. Therefore, in the case where the trap pipe 110 is provided, even when the cleaning water having the maximum instantaneous flow rate flows through the horizontal drainage pipe 10, the cleaning water efficiently flows through the bottom or bottom of the horizontal drainage pipe 16. . Furthermore, when the trap pipe 110 is provided, the cleaning water flows over a longer time than when the trap pipe 110 is not provided. Therefore, when the trap pipe 110 is provided, the foreign matter staying at the bottom or bottom of the horizontal drainage pipe 16 is efficiently washed away, and the bottom or bottom of the horizontal drainage pipe 16 is efficiently cleaned. Can be washed.

  According to an example of the experimental results shown in FIG. 11, when the trap pipe 110 is not provided, the time t3 when the cleaning water has an instantaneous flow rate of 70% or more of the maximum instantaneous flow rate F1 is about 0.7 seconds. Degree. On the other hand, when the trap pipe 110 is provided, the time t4 when the cleaning water has an instantaneous flow rate of 70% or more of the maximum instantaneous flow rate F2 is about 3 seconds. That is, the time t4 when the cleaning water has an instantaneous flow rate of 70% or more of the maximum instantaneous flow rate F2 when the trap piping 110 is provided is 70% of the maximum instantaneous flow rate F1 when the trap piping 110 is not provided. It is longer than the time t3 having the above instantaneous flow rate. Thereby, it turns out that the trap pipe 110 can lengthen the time when the washing water has an instantaneous flow rate of 70% or more of the maximum instantaneous flow rate.

  According to this, the degree of change with time of the instantaneous flow rate of the cleaning water supplied to the horizontal drainage pipe 16 is reduced by the trap pipe 110. Therefore, the maximum instantaneous flow rate itself can be suppressed. Therefore, it is possible to efficiently clean the lower half of the horizontal drainage pipe 16 where foreign matter accumulation or urine stones accumulate without filling the horizontal drainage pipe 16 with water. As a result, the horizontal drainage pipe 16 can be cleaned with a relatively small amount of cleaning water, and the tank can be prevented from becoming large.

For example, the inner diameter of the horizontal drainage pipe 16 is about 68 millimeters (mm). In this case, the cross-sectional area of the horizontal drainage pipe 16 is 3632 mm ² . The cross-sectional area occupying the lower half of the horizontal drainage pipe 16 is 1816 mm ² .
The 70% instantaneous flow rate of the maximum instantaneous flow rate F2 (about 120 L / min) is about 84 L / min. Therefore, cleaning water having an instantaneous flow rate of about 84 L / min or more flows in the horizontal drainage pipe 16 for about 3 seconds. That is, cleaning water having a volume of 4.2 × 10 ⁶ mm ³ or more flows through the horizontal drainage pipe 16. Therefore, when the trap pipe 110 is provided, the bottom or bottom surface inside the horizontal drainage pipe 16 can be cleaned efficiently.

  Next, the timing or number of times that the cleaning water is discharged from the tank 105 will be described. As described above with reference to FIGS. 1 and 2, the number of times the cleaning water is discharged from the tank 105 can be set according to the situation of the installation site of the horizontal drainage pipe cleaning unit 100, for example, about 1 to 12 times / day. Degree.

Alternatively, for example, the control unit 103 opens the drain valve 105c (see FIG. 2) provided in the tank 105 at a preset time, and discharges the wash water stored in the tank 105.
An example of the preset time set in the control unit 103 is a predetermined time in a time zone in which the user using the urinal 15 stops. Even if the foreign matter is removed by washing from the tank 105 in a time zone when the urinal 15 is used frequently, another foreign matter may remain in the horizontal drainage pipe 16 immediately after washing. In this case, since it is necessary to wash several times a day, it is inefficient from the viewpoint of saving water. Moreover, since the urinal 15 is not washed during the time when the user of the urinal 15 is interrupted, the supply of water to the inside of the horizontal drainage pipe 16 is stopped. Then, the urine pool is left in the same state for a long time. As a result, the activity of bacteria is activated, and there is a possibility that the urine stone stacking speed is increased. When the foreign object remains, the foreign object becomes an obstacle. Therefore, the sewage containing urine will stay in the vicinity of the foreign matter for a long time, which may cause urinary stones. Therefore, the foreign matter in the horizontal drainage pipe 16 can be removed by discharging the cleaning water from the tank 105 toward the horizontal drainage pipe 16 after entering the time zone when the user stops. Thereby, in the time slot | zone when a user stops, the inside of the horizontal drainage piping 16 can be maintained in a clean state.

For example, if the installation place of the horizontal drainage pipe cleaning unit 100 is a place such as a station building, the user stops during the time period from the last train to the first train. Therefore, the staying foreign matter can be removed by supplying cleaning water from the tank 105 at a predetermined time after the last train. Thereby, the horizontal drainage piping 16 can be effectively cleaned from the viewpoint of saving water and preventing urine stones.
If the installation location of the horizontal drainage pipe cleaning unit 100 is a commercial facility, for example, the user is interrupted during the time period between closing and opening. If the installation location of the horizontal drainage pipe cleaning unit 100 is, for example, a school, the user is interrupted during the time period between after school and school hours. If the installation location of the horizontal drainage pipe cleaning unit 100 is, for example, a company, the user is interrupted during the time period from the end of work to the start of work. Foreign substances can be removed during these time periods.

  When the horizontal drainage pipe cleaning unit 100 has the sterilizing water generator 102 (see FIG. 2), since urine and cleaning water do not flow into the horizontal drainage pipe 16 for a long time, sterilization with sterilizing water The state can be maintained for a long time, which is effective.

Next, the case where the horizontal drainage pipe cleaning unit 100 according to the present embodiment includes the sterilizing water generator 102 will be described.
As described above with reference to FIG. 2, the horizontal drainage pipe cleaning unit 100 may include the sterilizing water generator 102. As the sterilizing water generator 102, for example, an electrolyzer is used. For example, when an electrolysis device is used as the sterilizing water generating device 102, the control unit 103 opens the electromagnetic valve 101 and energizes the electrodes of the sterilizing water generating device 102 at the same time to supply sterilizing water having sterilizing power. Generated and stored in the tank 105. When a certain amount of sterilizing water accumulates in the tank 105, the float of the ball tap 105a (see FIG. 2) rises and the solenoid valve 101 closes. At the same time, the control unit 103 stops energization between the electrodes. Next, the control unit 103 opens the drain valve 105 c of the tank 105 and supplies sterilized water to the horizontal drainage pipe 16. Thereby, the inner surface of the horizontal drainage pipe 16 can be coated with sterilizing water. In addition, the remaining bacteria can be killed, and it is possible to prevent the origin of dirt from being formed before the user comes again.

  The sterilizing water in the present specification may be any liquid as long as it has a sterilizing action. As an example, sterilizing water having ions generated by the above-described electrolysis apparatus can be mentioned. Moreover, what uses the chlorine which remains in tap water as an example of the germicidal water to generate | occur | produce is mentioned.

  Examples of sterilizing water include water containing bound chlorine (for example, monochloramine, dichloramine, etc.), ozone-containing water (for example, dissolution of ozone generated by silent discharge in water or electrolysis of water in addition to water containing free chlorine. And ozone-containing water obtained by ozone generation in water) and water containing antibacterial metal ions (for example, silver ions, copper ions, zinc ions, etc.) (PCT / JP95 / 01650).

  When free chlorine-containing water is used as sterilizing water, the concentration of free chlorine is more preferably 0.1 mg / liter or more. The concentration of free chlorine is more preferably 0.5 mg / liter or more. According to this, the accumulated water inside the horizontal drainage pipe 16 and the inner surface of the horizontal drainage pipe 16 can be sufficiently sterilized. Thereby, the increase of urease based on the effect | action of a living microbe and the sticking effect can be suppressed effectively. In addition, an increase in pH due to dissolution of ammonia can be suppressed to prevent adhesion of uric stone, and a cause of odor can be suppressed.

  Furthermore, when ozone-containing water is used as sterilizing water, the ozone concentration in the ozone-containing water is more preferably 0.01 mg / liter or more. The ozone concentration in the ozone-containing water is more preferably 0.05 mg / liter or more. According to this, the accumulated water inside the horizontal drainage pipe 16 and the inner surface of the horizontal drainage pipe 16 can be sufficiently sterilized. Thereby, the same effect as the case where free chlorine content water is used as sterilization water is acquired.

  When the antibacterial metal ion is silver ion, the silver ion concentration is more preferably 1 μg / liter or more. The silver ion concentration is more preferably 10 μg / liter or more. According to this, the stagnant water inside the horizontal drainage pipe 16 can be effectively sterilized by mixing the liquid containing silver ions with the stagnant water inside the urinal 15 and maintaining it for a predetermined time. Thereby, the same effect as the case where free chlorine content water is used as sterilization water is acquired.

  Here, the antibacterial metal ion has a low antibacterial ability by instantaneous contact and a long antibacterial life compared to free chlorine and ozone. Therefore, antibacterial metal ions have excellent antibacterial properties by taking a long action time. For this reason, if water containing antibacterial metal ions is used for a predetermined time in the staying water inside the horizontal drainage pipe 16, viable bacteria are reduced with a small amount of sterilized water, and adhesion of urinary stones is suppressed. be able to.

  Examples of other sterilizing water and a method for producing the same include a method in which a chemical having a sterilizing action is mixed into the tank 105.

In the case where antibacterial metal ions are electrolytically mixed in water, in order to elute the concentration required for sterilization, it is necessary to apply a larger current between the electrodes as the flow rate of the mixed water increases. By adopting a system for storing the sterilizing water inside the tank 105, it is possible to perform electrolysis at a small flow rate and to minimize electrical energy.
In addition, even when the drug is mixed, a solution having a constant concentration can be obtained more reliably than when the drug is mixed into running water.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, etc. of each element provided in the toilet system 10 and the horizontal drainage pipe cleaning unit 100 and the installation form of the urinal 15 and the tank 105 are not limited to those illustrated. It can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  10 toilet system, 13 water supply piping, 15 urinal, 16 horizontal drainage piping, 16a upstream inside, 16c central shaft, 17 flushing valve, 20 lining unit, 21 front surface, 30 wall surface, 100 horizontal drainage piping cleaning unit, DESCRIPTION OF SYMBOLS 101 Solenoid valve, 102 Sterilization water production | generation apparatus, 103 Control part, 105 Tank, 105a Ball tap, 105b Cleaning lever, 105c Drain valve, 110 Trap piping, 111 Trap piping connection part, 120 Vent pipe, 121 Vent pipe connection part, 130 connection Pipe, 130c central axis, 131 cleaning port, 133 bent part, 134 connection pipe connection part, 170 equipment cleaning wire, 171 wire, 173 head, 180 high pressure washing nozzle, 181 hose, 183 head part

Claims (9)

A horizontal drainage pipe cleaning unit connected to a horizontal drainage pipe provided with a gradient and joined to each drainage port of a plurality of toilets,
Among the plurality of toilet bowls, a tank provided on the upstream side of a joint portion between the toilet bowl installed on the upstream side of the gradient and the horizontal drainage pipe and capable of storing water;
Instantaneous flow rate stabilizing means arranged on the downstream side of the tank and the upstream side of the horizontal drainage pipe to lengthen the time that the water discharged from the tank has the maximum instantaneous flow rate;
A horizontal drainage pipe cleaning unit characterized by comprising:   2. The horizontal drainage pipe cleaning unit according to claim 1, wherein the instantaneous flow rate stabilization means lengthens a time during which water discharged from the tank has an instantaneous flow rate of 70% or more of the maximum instantaneous flow rate.   The horizontal drainage pipe cleaning unit according to claim 1 or 2, wherein the instantaneous flow rate stabilizing means is a first pipe connected to the tank and having a U shape. Further comprising a connecting pipe having an upstream end connected to the tank and a downstream end connected to the horizontal drainage pipe;
3. The horizontal drainage pipe cleaning unit according to claim 1, wherein the instantaneous flow rate stabilizing unit is a throttle part provided in a part of the communication pipe and having a narrowed diameter. Further comprising a connecting pipe having an upstream end connected to the tank and a downstream end connected to the horizontal drainage pipe;
3. The horizontal drainage pipe cleaning unit according to claim 1, wherein the instantaneous flow rate stabilizing means is a bellows-like bellows-like pipe portion provided in a part of the communication pipe. A connecting pipe having an upstream end connected to the tank and a downstream end connected to the horizontal drainage pipe;
A vent pipe connected to the communication pipe for guiding air;
Further comprising
The said instantaneous flow volume stabilization means is an umbrella-shaped cover part provided in the connection part of the said connection piping and the said ventilation pipe, and restrict | squeezes the flow-path cross-sectional area of the said connection piping. Horizontal drainage pipe cleaning unit. The first pipe is connected to the first connecting portion, and is connected to the second pipe for guiding air and the second connecting portion, and extends in the vertical direction. Further comprising a third pipe connected at the other end to the horizontal drainage pipe at a third connection part,
The horizontal pulling according to claim 3, wherein the first connection portion, the second connection portion, and the cleaning port are provided in this order from the lower side to the upper side in the vertical direction. Drainage pipe cleaning unit.   The said 3rd piping was formed in the linear form over the said 1st connection part, the said 2nd connection part, and the part in which the said cleaning port was provided. The horizontal drainage pipe cleaning unit described. Multiple toilets,
A horizontal drainage pipe provided with a gradient and joined to each drainage port of the plurality of toilets;
The horizontal drainage pipe cleaning unit according to any one of claims 1 to 8,
A water supply pipe connected to each of the plurality of toilets and the tank to supply water,
A toilet system characterized by comprising:

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