JP2020002661A - Drainage piping for drainage equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage pipe in a drainage pipe of a tank body provided with a plurality of drainage outlets, so that backflow does not occur in each drainage port.
SOLUTION: In a drainage pipe of a drainage device having a tank body having a drainage port and an overflow drainage port, a drainage pipe of the drainage device is bent in a substantially horizontal direction and a substantially vertical direction from the horizontal portion. A vertical portion, and a branch portion into which drainage from the overflow drainage port flows in a position or direction deviated from a position facing the pipe of the horizontal portion. Further, the branch pipe portion is provided on a horizontal portion of the drainage pipe and on a side surface of the horizontal portion. Further, the branch pipe portion is provided on a side surface at a height position above the vertical portion and shifted below the horizontal portion.
[Selection diagram] FIG.

Description

  TECHNICAL FIELD The present invention relates to a drainage pipe for treating drainage of a drainage device that generates drainage by use such as a sink and a sink.

2. Description of the Related Art Conventionally, in a drainage device that has a tank body such as a wash basin or a sink, and generates drainage in the tank body when used, drainage generated in the tank body is drained from a drain port provided in the tank body to drain the generated drainage to the sewage side or the like. There is known a drain pipe for connecting drainage and treating waste water.
Hereinafter, examples of the conventional drainage device and drainage pipe described in Patent Literature 1 will be described.
The drainage pipe described in Patent Literature 1 includes a sink and a drainage pipe described below.
The washstand includes a cabinet body, a drawer member, and a washbasin described below.
The cabinet body is a box body with an open top and front, and houses a drawer member slidably therein. Further, a through hole for connecting a drainage pipe to an underfloor pipe is provided in a bottom portion of the cabinet body.
The drawer member is a box body that is open at the top, and is a member that is slidably housed inside the cabinet body in the front side of the cabinet body, and stores therein a storage item such as a towel. Is composed of
The wash bowl is a substantially bowl-shaped tank body having an open upper portion, and has a drain port on a bottom portion and an overflow drain port on an upper side portion.
The drain pipe includes a drain port main body, a first elbow member, a second elbow member, a trap member, an overflow pipe, and a valve member described below.
The drain port body has a substantially cylindrical shape, and is provided with a flange portion projecting outward at an upper end of a side surface thereof, and a branch pipe portion for connecting an overflow pipe below the flange portion and on the side surface thereof. . When the construction is completed, the upper surface of the flange portion is attached and fixed to the lower surface of the peripheral edge of the drain port of the wash bowl via packing or the like. By arranging and connecting in this manner, the drainage that has passed through the drainage port on the bottom surface of the washbasin is attached to and fixed to the washbasin so as to flow into the inside of the drainage body.
The first elbow member and the second elbow member are members each having a tube bent at approximately 90 degrees, and the upstream end of the first elbow member is opened upward. The drain port is connected to the lower end of the main body, and the downstream end is arranged so as to open toward the inner wall surface of the cabinet main body.
Further, the upstream end of the second elbow member is coaxially disposed and connected and fixed to the downstream end of the first elbow member, and the downstream end is formed by a bent portion of the second elbow member. It is arranged to face downward.
The trap member is a member obtained by bending the tube into a substantially S-shape and rotating the substantially S-shape by 90 degrees, and the upstream end is located downstream of the second elbow member as described above. The downstream end is penetrated through the through hole in the bottom part of the cabinet body, and is connected to the underfloor piping. In addition, when drain water flows into the trap member, a portion of the flow path in the pipe body where the inside of the pipe body becomes full due to the drain water is generated. The portion that becomes full due to the drainage is called a sealing portion, and the drainage collected in the sealing portion is called a sealing portion. Seal water is accumulated in the water sealing part, and a part of the flow path is always full, thereby preventing odors and pests from the downstream side from entering the indoor side beyond the water sealing part. .
In the drainage pipe, a function of preventing the odor and pests from flowing backward from the sewage side to the indoor side is called a trap function, and a device having this trapping function is called a drainage trap.
The overflow pipe is a pipe for treating drainage from an overflow drain port provided above a side portion of a washbasin, which is a tank body, and is provided at a flexible hose pipe portion and at one end of the hose pipe portion. And an overflow drain port main body, which is connected and fixed to the back side of the overflow drain port and into which drainage from the overflow drain port flows. Of the overflow pipe, the overflow drain body is connected and fixed to the back side of the overflow drain so that the drain water from the overflow drain flows in as described above, and the other end of the hose pipe portion is a branch pipe part of the drain body. Connected to.
The valve member includes a valve body that closes the drain port by covering the drain port in a disk shape, and a shaft portion that extends from the center of the lower surface of the valve element. The valve member is normally stored at a position away from the drain port, and at the time of use, the drain port is closed by covering the drain port with a valve body, so that water can be collected inside the wash bowl.
Due to the combination of the above members, the piping inside the cabinet main body is bent 90 degrees from the lower end of the drain main body by the first elbow member toward the back side inside the cabinet main body, and thereafter, is deepened by the second elbow member. It bends down along the side wall. For this reason, the trap member connected to the lower end of the second elbow member is also arranged along the inner side wall surface of the cabinet body.
In this way, the drainage pipe from the drainage port is arranged along the bottom surface of the washbasin and along the wall surface of the cabinet body so as to avoid the storage space in the cabinet body. Can be.

In the wash basin and the drain pipe of the wash basin configured as described above, when drainage occurs in the wash basin due to the use of the wash basin as a drainage device, the drainage flows from the drain outlet to the inside of the drain outlet main body. , The second elbow member, the trap member, and the like, flow through the drainage pipe in this order, and are finally discharged from the underfloor pipe to the sewage side. Further, as described above, since the sealed water is accumulated in the sealed portion of the trap member, the odor and the pests are prevented from flowing back to the indoor side.
Also, if water is discharged into the washbasin with the drain port closed with a valve member, the water discharge will accumulate in the washbasin because the drain port is closed. When the water reaches the lower end position, the water discharge flows from the overflow drain through the overflow drain pipe into the branch pipe portion of the drain body, and inside the drain body, the first elbow member, the second elbow member, and the trap member. , Flow through the drainage pipe in the order, finally drained from the underfloor pipe to the sewage side, the water level in the washbasin rises above the overflow drain, and finally the spout overflows from the upper edge of the washbasin , Etc. can be prevented.

JP 2007-32479 A

In the drainage piping of the drainage equipment as described above, there is a demand to secure a storage space in a cabinet as large as possible. This is not limited to simply requesting an increase in the capacity of the storage items in the cabinet. If too many storage items are arranged in the drawer member, the storage items jump out above the drawer member, and This is because a problem such as interference with the drainage pipe may occur, so that the storage space is expanded even a little, and interference with the drainage pipe is less likely to occur.
As one of the specific methods for expanding the storage space, the branch pipe of the drain body is omitted, and the lower end of the drain body is raised accordingly, so that the height of the branch pipe is increased. A method of increasing the arrangement position of the first elbow member and the second elbow member of the drainage pipe and expanding the storage space in the cabinet body is considered.
However, since an overflow pipe for treating drainage from the overflow drain port is necessary, another connection destination is required instead of the branch pipe portion of the drain port main body. Providing an independent trapping member for the overflow pipe and a pipe to connect to the underfloor pipe increases costs due to an increase in the number of parts and increases the labor for construction.Therefore, piping from the drain port on the bottom of the washbasin bowl is required. Therefore, it is convenient to provide a connection point of the overflow pipe at a place other than the drain outlet main body.
In this case, a method is conceivable in which the second elbow member has a T-shape and an overflow pipe is connected to a bent portion of the second elbow member. However, with such a pipe layout, the flow path from the drain port and the flow path of the overflow pipe face each other at the intersection of the T shape. For this reason, when the drainage port is opened and a large amount of drainage is discharged at a stretch after the water is collected in the wash bowl, a large amount and large amount of drainage flows from the drainage port, and a considerable amount of drainage is discharged to the second elbow member. However, there is a problem that a straight line travels at a T-shaped crossing portion without bending at the bent portion, and the overflow pipe flows backward.
In the above-mentioned Patent Document 1, the case of the drainage pipe of the wash basin is shown. However, the above-mentioned problem of the backflow is caused by the drainage provided with a plurality of drainage ports, and the drainage from each of the drainage ports is combined and discharged. This is a problem that occurs in general piping.
The present invention has been devised in view of the above-mentioned problems, and provides a drainage pipe in which drainage pipes provided with a plurality of drainage drainage ports do not cause backflow to each other. It is.

The present invention according to claim 1 is a drain pipe of a drain device having a tank body having a drain port and an overflow drain port,
Equipped with a horizontal portion oriented substantially in the horizontal direction and a vertical portion bent substantially vertically from the horizontal portion, the drainage from the overflow drainage port is displaced from the position facing the pipe of the horizontal portion from the facing position. A drainage pipe for a drainage device, comprising a branch pipe part into which the inflow is made.

  According to a second aspect of the present invention, there is provided the drainage pipe of the drainage device according to the first aspect, wherein the branch pipe portion is provided on the horizontal portion and on a side surface of the horizontal portion. .

  The present invention according to claim 3 is characterized in that the branch pipe portion is provided on a side surface at a height position on the vertical portion and shifted below the horizontal portion. It is a drainage pipe of the drainage device described.

  The invention according to claim 4 is characterized in that the branch pipe portion is provided with a check valve which allows the flow of drainage to the downstream side, but prevents the drainage from flowing back to the upstream side of the branch portion. It is a drainage pipe of the drainage device according to any one of claims 1 to 3.

  According to a fifth aspect of the present invention, in the branch pipe portion, a throttle structure is provided in which the cross-sectional area of the pipe body decreases toward the downstream side. It is a drainage pipe of the drainage device described.

  According to a sixth aspect of the present invention, there is provided the drainage pipe for a drainage device according to any one of the first to fifth aspects, wherein a drainage trap is provided downstream of the vertical portion.

According to the first aspect of the present invention, in the drainage pipe provided with the drainage junction, the counterflow at the junction can be prevented by not opposing the drainage flow. As a specific configuration that does not oppose the flow of the drainage, as described in claim 2, a method of merging from the side surface of the horizontal part of the drainage pipe, and as described in claim 3, at the vertical part of the drainage pipe Then, there is a method of merging from a position shifted downward from the horizontal portion.
According to the fourth aspect of the present invention, since the branch pipe is provided with the check valve, the backflow to the pipe on the branch pipe side can be more reliably prevented.
According to the fifth aspect of the present invention, since the branch pipe portion is provided with the throttle structure, the backflow to the pipe on the branch pipe side can be more reliably prevented.
According to the sixth aspect of the present invention, by providing the drain trap downstream of the junction, the trap function of the drain trap can be applied to the plurality of drain ports that join.

It is sectional drawing which shows the construction state of the washstand of 1st Example. It is sectional drawing which shows the piping structure of the main member of 1st Example. FIG. 3 is a reference diagram illustrating a member configuration of FIG. 2. FIG. 4 is a perspective view of a second elbow member of the first embodiment. It is sectional drawing in planar view of a 1st Example. FIG. 6 is a cross-sectional view of a second elbow member to which an overflow pipe is connected, taken along a line AA in FIG. 5. It is sectional drawing of the (a) opening state of the check ring, and (b) opening state. It is a perspective view of a check valve. It is sectional drawing which shows the (a) member structure of a check ring and a socket, and (b) combined state. It is sectional drawing in the front view of a trap member. It is sectional drawing which shows the construction state of the washstand of 2nd Example. It is sectional drawing which shows the piping structure of the main member of 2nd Example. It is a reference drawing which shows the member structure of FIG. It is sectional drawing which shows the closed state of the drain port of 2nd Example. It is sectional drawing which shows the opening state of the drain port of 2nd Example.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
The drainage pipe of the drainage device according to the first embodiment of the present invention shown in FIGS. 1 to 10 includes a sink S and a drainage pipe described below.
The washstand S includes a cabinet body C, a drawer member D, and a washbasin B described below.
The cabinet body C is a box body having an open top and front, and houses a drawer member D slidably therein. Further, a through hole C1 for connecting the drainage pipe to the underfloor pipe is provided at the bottom portion of the cabinet body C.
The drawer member D is a box body whose upper part is open, and is a member that is slidably housed inside the cabinet body C in the front side of the cabinet body C, and inside the cabinet body C, a storage object such as a towel is placed. It is configured to be stored.
The basin B is a substantially bowl-shaped tank body having an open upper portion, and includes a drain port 1 on a bottom portion and an overflow drain port 2 on an upper side portion.
The drainage pipe includes a drain port main body 3, a first elbow member 4, a second elbow member 5, a trap member 7, an overflow pipe 8, and a valve member 10 described below.
The drain port main body 3 has a substantially cylindrical shape, and is provided with a flange 3a protruding outward at the upper end of the side surface. When the construction is completed, the drain outlet main body 3 is attached and fixed to the lower surface of the peripheral edge of the drain outlet 1 of the washbasin B using a screw member (not shown) or the like via the packing or the like. By arranging and connecting in this manner, the drainage that has passed through the drainage port 1 on the bottom surface of the basin B flows into the drainage body 3, passes through the internal flow path, and is discharged from the downstream end. You.
Each of the first elbow member 4 and the second elbow member 5 is a member obtained by bending a tube body at approximately 90 degrees, and the upstream end of the first elbow member 4 opens upward. In this way, it is connected to the lower end of the drain port main body 3, and the downstream end is arranged so as to open toward the rear wall surface of the cabinet main body C.
The upstream end of the second elbow member 5 is coaxially disposed and connected and fixed to the downstream end of the first elbow member 4, and the downstream end of the second elbow member 5 is connected to the downstream end of the second elbow member 5. It is arrange | positioned so that it may face downward from a bending part. Although not described in detail, the first elbow member 4 and the second elbow member 5 each have a cylindrical shape having the same cross-section at the downstream end, and each lower end is connected by tightening using a nut. It is configured as follows. For this reason, by cutting each lower end of the first elbow member 4 and the second elbow member 5, the length of the drainage pipe in the horizontal and vertical directions can be adjusted.
A branch pipe 6 is provided on the side surface of the horizontal portion of the second elbow member 5.
The branch pipe section 6 will be described in detail. As shown in FIG. 5, the drainage flowing through the branch pipe section 6 is 45 ° in a plan view with respect to the horizontal portion of the second elbow member 5. It is provided so as to go downstream of the second elbow member 5 at a certain angle. Further, as shown in FIG. 6, the branch pipe portion 6 is provided with an inclined surface 6 a that is directed downward from the upper surface in a side view at a place where the second elbow member 5 merges with the horizontal portion. Due to the inclined surface 6a, the cross-sectional area of the branch pipe portion 6 decreases toward the downstream side. That is, in this embodiment, the inclined surface 6a forms a diaphragm structure.
Further, at the end of the branch pipe portion 6, a check valve 9 for preventing the back flow of the drain water to the upstream side of the branch pipe portion 6 while allowing the flow of the drain water to the downstream side is provided. As shown in FIGS. 7 to 9, the check ring 9 is substantially circular and has a shaft portion slightly above the central portion, and has a shaft portion. And an adapter 9c for positioning the valve seat 9b in the branch pipe 6.
When a backflow occurs from the downstream to the upstream, as shown in FIG. 7A, the backflow prevention valve 9 rotates the water stop plate 9a to abut the valve seat 9b, and the branch pipe 6 Prevent backflow of drainage to the upstream side.
On the other hand, as shown in FIG. 7B, when the drainage flows from the upstream to the downstream, the water stop plate 9a rotates to separate the water stop plate 9a from the valve seat 9b, and the drainage passes. Tolerate.
In FIGS. 7A and 7B, the left side and the right side of the water stop valve in both figures are upstream and downstream, respectively.
As shown in FIG. 10, the trap member 7 is a member in which a pipe is bent in a substantially S-shape and rotated by 90 degrees. In the illustration of the embodiment of the present invention, the trap member 7 of FIG. 1 is viewed from the side and the trap member 7 of FIG. 10 is viewed from the front. In this embodiment, the upstream end of the trap member 7 is at the downstream end of the second elbow member 5 as described above, and the downstream end of the trap member 7 is penetrated through the through hole C1 at the bottom of the cabinet main body C and is under the floor. Each is connected to a pipe. In addition, when drain water flows into the trap member 7, a portion of the flow path in the pipe body where the inside of the pipe body becomes full due to the drain water is generated. The portion that becomes full due to the drainage is referred to as a water sealing portion 7a, and the drainage accumulated in the water sealing portion 7a is referred to as water sealing. Sealing water is accumulated in the sealing portion 7a, and a part of the flow path is always full, thereby preventing odors and pests from the downstream side from entering the indoor side beyond the sealing portion 7a. Can be.
In the drainage pipe, a function of preventing the odor and pests from flowing backward from the sewage side to the indoor side is called a trap function, and a device having this trapping function is called a drainage trap.
The overflow pipe 8 is a pipe for treating drainage from an overflow drain port 2 provided above a side surface portion of a washbasin B which is a tank body, and has a hose pipe portion 8a having flexibility and a hose pipe portion. An overflow drain main body 8b, which is connected to and fixed to the back side of the overflow drain 2 and is provided at one end of the overflow drain 8a, into which drainage from the overflow drain 2 flows. As described above, the overflow drain main body 8b of the overflow pipe 8 is connected and fixed to the back side of the overflow drain 2 into which drainage from the overflow drain 2 flows by using a screw member (not shown) or the like. The other end of the portion 8a is connected to the branch pipe portion 6 of the second elbow member 5.
The valve member 10 includes a valve body 10 a for closing the drain port 1 by covering the drain port 1 in a disk shape, and a weight portion 10 b disposed in the drain port 1. The valve member 10 is normally stored at a position away from the drain port 1 during use, and when used, the drain port 1 is covered with the valve body 10a while fitting the weight portion 10b into the drain port 1 so that drainage is performed. The mouth 1 can be closed, and the spout can be stored inside the basin B.
In the present embodiment, the opening into which the drainage in the basin B, which is the basin body, flows into is referred to as a drainage outlet. For this reason, the drain port 1 for draining the entire inside of the tank becomes the drain port 1 which is an opening provided on the bottom surface of the basin B, and the overflow drain port 2 for performing the overflow drain inside the tank is provided with The overflow drain port 2 is an opening provided on the side surface of the bowl B.

The drainage pipe of the drainage device according to the first embodiment of the present invention is constructed as follows.
Although not described in detail, the connection points of the respective members are connected in a water-tight manner as required by screw connection via bonding or packing.
First, at a factory or the like, the upper surface of the flange portion 3a of the drain port main body 3 is connected and fixed to the lower surface of the peripheral edge of the drain port 1 of the wash basin B using a screw member or the like via packing.
Next, the upstream end of the first elbow member 4 is connected to the lower end of the drain port main body 3, and the upstream end of the second elbow member 5 is further connected to the downstream end of the first elbow member 4. Connect.
Next, the upstream end of the trap member 7 is connected to the downstream end of the second elbow member 5.
With this connection, the pipe downstream of the bent portion of the first elbow member 4 and the pipe upstream of the bent portion of the second elbow member 5 are substantially horizontal along the bottom surface of the basin B. Placed in the direction. Further, the pipes from the bent portion of the second elbow member 5 to the downstream end and the water sealing portion 7a of the trap member 7 are vertically arranged along the inner wall surface of the cabinet portion.
Next, the downstream end of the trap member 7 is connected to the underfloor pipe via the through hole C1.
Next, the overflow drain main body 8b of the overflow pipe 8 is connected and fixed to the back side of the overflow drain 2 so that the drainage from the overflow drain 2 flows in.
Further, after the check valve 9 is disposed in the branch pipe 6 of the second elbow member 5, the end of the overflow pipe 8 is connected to the branch pipe 6 of the second elbow member 5, and the drainage device is used. Construction of the drainage pipe of a certain washstand S is completed.

  In the present embodiment, with the above-described configuration, a substantially horizontal portion from the bent portion of the first elbow member 4 to the downstream end portion and from the upstream end portion of the second elbow member 5 to the bent portion is provided. Is a horizontal portion of the drainage pipe oriented substantially in the horizontal direction. A vertical portion from the bent portion of the second elbow member 5 to the downstream end portion and the water sealing portion 7a of the trap member 7 is a vertical portion of the drainage pipe. That is, in this embodiment, the branch pipe portion 6 is on the horizontal portion and is a drainage pipe of a drainage device provided on a side surface of the horizontal portion. Further, in this embodiment, as shown in FIG. 5, a structure having the branch pipe portion 6 at an angle of about 45 degrees with respect to the horizontal portion of the second elbow member 5 is provided. That is, the present embodiment includes the branch pipe portion 6 into which drainage from the overflow drainage port 2 flows in a direction deviated from a position facing the horizontal portion of the second elbow pipe member 5 which is a horizontal portion pipe. Drainage piping for drainage equipment.

In the wash basin S and the drain pipe of the wash basin S configured as described above, when drainage occurs in the wash basin B due to the use of the wash basin S as the drainage device, the drainage is discharged from the drain port 1 to the drain port. In the main body 3, the first elbow member 4, the second elbow member 5, and the trap member 7 flow through the drainage pipe in this order, and are finally discharged from the underfloor pipe to the sewage side. In addition, as described above, the accumulation of water in the water sealing portion 7a of the trap member 7 prevents odors and pests from flowing back indoors.
When water is discharged into the basin B with the drain port 1 closed by the valve member 10, the discharged water accumulates in the basin B because the drain port 1 is closed. Then, when the accumulated water discharge reaches the lower end position of the overflow drain port 2, the water discharge subsequently flows into the branch pipe portion 6 of the second elbow member 5 from the overflow drain port 2 through the overflow drain pipe, and the check valve is provided. 9 opens according to the flow of the drainage, and flows through the drainage pipe in the order of the second elbow member 5 and the trap member 7. The above-mentioned spouting water is finally discharged from the underfloor piping to the sewage side, the water level in the basin B rises above the overflow drain port 2, and finally the spouting water overflows from the upper edge of the basin B. The situation can be prevented.

In the wash basin S and the drainage pipe of the wash basin S of the first embodiment, the drain port 1 is closed by the valve member 10, water is collected in the wash bowl B, and the valve member 10 is removed from the drain port 1. When a large amount of drainage is generated in the flow path from the drainage port 1, such as when the drainage port 1 is opened, a part of the drainage passes through the second elbow member 5 when passing through the second elbow member 5. Part of the drainage may go from the horizontal part to the branch pipe part 6 side. However, the following 1. To 3. Therefore, backflow of the second elbow member 5 to the horizontal part overflow pipe 8 side can be prevented.
1. Due to the throttle structure provided by the inclined surface 6a provided in the branch pipe portion 6, the flow path of the drainage from the horizontal portion of the second elbow member 5 toward the branch pipe portion 6 is narrowed, and the drainage water is discharged to the branch pipe portion 6 side. It is difficult to flow back in large quantities.
2. The check valve 9 disposed on the branch pipe section 6 acts on the drainage flowing into the branch pipe section 6 to close the flow path from the branch pipe section 6 to the overflow drain port 2. The backflow of the drainage from the horizontal portion of the member 5 hardly flows back to the overflow drain port 2 side.
3. In order for the drainage to flow from the horizontal part of the second elbow member 5 to the branch pipe part 6 side, as shown in FIG. Since it is necessary to bend and to flow the drainage, it is difficult for a large amount of drainage to flow backward to the branch pipe 6 side.

Next, a second embodiment of the present invention will be described with reference to the drawings.
The drainage pipe of the drainage device according to the second embodiment of the present invention shown in FIGS. 11 to 15 includes a wash basin S and a drainage pipe described below.
The washstand S includes a cabinet body C, a drawer member D, and a washbasin B. Among them, the cabinet body C and the drawer member D have the same configuration as the respective members of the first embodiment described in paragraph 0014, and thus the description thereof will be omitted, and the washbasin B will be described below.
The wash bowl B is a substantially bowl-shaped tank body whose upper part is open, and is provided with a mounting port B1 on the bottom part and an overflow drain port 2 on the upper part of the side part. The mounting opening B1 of the present embodiment is formed at a position substantially corresponding to the rear end of the bottom surface of the basin B. Further, an operation section mounting port B2 for mounting the operation section 12 is provided on the periphery of the opening of the wash bowl B.
The drain pipe includes a drain port main body 3, a first elbow member 4, a second elbow member 5, an operation unit 12, a release wire 11, a trap member 7, an overflow pipe 8, and a valve member 10.
Among them, the trap member 7 and the overflow pipe 8 have the same configuration as the members of the first embodiment described in paragraph 0014, and thus the description thereof will be omitted, and the drain port main body 3 and the first elbow member 4 will be described below. The second elbow member 5, the release wire 11, the operation unit 12, and the valve member 10 will be described.
The drain port main body 3 is a substantially cylindrical member, and forms a drain port 1 at an upper end of an inner surface thereof, and a flow path through which drain water passes inside the drain port main body 3 downstream of the drain port 1, respectively. At the upper end of the side surface, a flange portion 3a protruding outward is provided, and a male screw is provided on the side surface below the flange portion 3a. Further, a plate nut member 3b having a female screw to be screwed with the male screw is provided. At the time of construction, the cylindrical portion of the drain port main body 3 is inserted into the mounting port B1, so that the lower surface of the flange portion 3a is arranged so as to contact the upper surface of the drain port 1 peripheral edge of the wash bowl B via packing or the like. Further, the female screw portion of the plate nut member 3b is screwed into the male screw portion, so that the flange 3a and the plate nut member 3b clamp the peripheral edge of the mounting opening B1 of the wash basin B, so that the drain port main body 3 Can be attached and fixed to the sink B.
Each of the first elbow member 4 and the second elbow member 5 is a member obtained by bending a tube body at approximately 90 degrees, and the upstream end of the first elbow member 4 opens upward. In this way, it is connected to the lower end of the drain port main body 3, and the downstream end is arranged so as to open toward the rear wall surface of the cabinet main body C.
Further, the bent portion of the first elbow member 4 and the position connection portion 4a directly below the drain port 1 at the time of completion of the construction are substantially cylindrical, and at the time of completion of the construction, a push-up of a release wire 11 described later is provided therein. The shaft 11c is arranged to be able to move up and down vertically, and the end of the outer tube 11a of the release wire 11 is attached and fixed to the lower end of the connection portion 4a.
The upstream end of the second elbow member 5 is coaxially disposed and connected and fixed to the downstream end of the first elbow member 4, and the downstream end of the second elbow member 5 is connected to the downstream end of the second elbow member 5. It is arrange | positioned so that it may face downward from a bending part. Although not described in detail, the first elbow member 4 and the second elbow member 5 each have a cylindrical shape having the same cross-section at the downstream end, and each lower end is connected by tightening using a nut. It is configured as follows. For this reason, by cutting each lower end of the first elbow member 4 and the second elbow member 5, the length of the drainage pipe in the horizontal and vertical directions can be adjusted.
A branch pipe 6 is provided on the side surface of the vertical portion of the second elbow member 5.
The branch pipe portion 6 will be described in detail. As shown in FIGS. 12 and 13, the branch pipe portion 6 has a vertical pipe body downstream from the arc of the bent portion of the second elbow member 5. The branch portion 6 is formed so as to be connected to the vertical portion, which is lower than the lower end of the horizontal portion. The formation position and the direction of the branch pipe portion 6 are positions facing the horizontal portion on the upstream side of the bent portion in plan view, but as shown in FIGS. The upstream horizontal portion and the branch pipe portion 6 are formed at positions displaced vertically.
Further, as shown in FIGS. 12 and 13, the branch pipe portion 6 includes an inclined surface 6 a that is directed downward from the upper surface when viewed from the side at a junction with the horizontal portion of the second elbow member 5. Due to the inclined surface 6a, the cross-sectional area of the branch pipe portion 6 decreases toward the downstream side. That is, in this embodiment, the inclined surface 6a forms a diaphragm structure.
At the end of the branch 6, the flow of drainage to the downstream having the same configuration as in the first embodiment described in paragraph 0014 is allowed, but the reverse flow of drainage to the upstream of the branch 6 is allowed. It is provided with a check valve 9 for preventing flow.
When the construction is completed, the length from the upper end of the drain port 1 to the upper surface of the bottom surface of the first elbow member 4 is designed to be about 70 mm.
In addition, the inside diameter of the drain body 3, the inside diameter of the vertical portion on the upstream side of the first elbow member 4, and the inside diameter of the seam portion between the drain body 3 and the first elbow member 4 are set to about 40 mm. The inner surface is formed so as not to cause unevenness of 1 mm or more.
The release wire 11 has a substantially cylindrical shape and has flexibility in the side direction and an outer tube 11a having rigidity in the axial direction. The release wire 11 slides in the outer tube 11a and has flexibility in the side direction. An inner wire 11b made of a stranded wire of metal having high rigidity, and a push-up shaft 11c provided at an end of the inner wire 11b on the drain port 1 side are provided.
The push-up shaft 11c is configured such that, when the construction is completed, the upper end thereof is located at substantially the same height position as the bottom surface of the first elbow member 4 when the push-up shaft 11c is lowered most.
The operation unit 12 includes a knob 12a connected to the inner wire 11b of the release wire 11. When the construction is completed, the inner wire 11b advances and retreats in the outer tube 11a in conjunction with the pushing and pulling of the knob 12a. By moving the push-up shaft 11c up and down, the valve member 10 moves up and down to open and close the drain port 1.
The valve member 10 is formed in a disk shape to cover the drain port 1 to close the drain port 1, a valve shaft 10c hanging downward from the lower surface of the male center of the valve member 10a, and sliding on the valve shaft 10c. And a perforated plate 10d which is attached as possible. The perforated plate portion 10d has its outer edge in contact with the inner surface of the drain port 1 and guides the valve shaft 10c so as not to be inclined during sliding.
In the present embodiment, the opening into which the drainage in the washbasin B, which is the tank body, flows into is referred to as a drainage outlet. For this reason, the drain port 1 for draining the entire inside of the tank body becomes the drain port 1 which is the upper end portion of the opening inside the drain port body 3 attached to the bottom surface of the washbasin B, and performs overflow drainage in the tank body. The overflow drain port 2 for the purpose becomes the overflow drain port 2 which is an opening provided on the side of the basin B.

The drainage pipe of the drainage device according to the second embodiment of the present invention is constructed as follows.
Although not described in detail, the connection points of the respective members are connected in a water-tight manner as required by screw connection via bonding or packing.
First, at a factory or the like, the cylindrical portion of the drain port main body 3 is inserted into the mounting port B1, and the lower surface of the flange portion 3a is disposed so as to abut the upper surface of the mounting port B1 peripheral edge of the washing bowl B via packing or the like. Further, the female screw portion of the plate nut member 3b is screwed into the male screw portion, and the flange 3a and the plate nut member 3b sandwich the peripheral edge of the mounting opening B1 of the basin B, so that the drain port main body 3 is formed. Attach it to the sink B and fix it.
Next, the operation unit 12 is attached to the operation unit attachment opening B2, and the release wire 11 is connected to the operation unit 12. By this connection, the end of the outer tube 11a of the release wire 11 is fixed to the operation unit 12, and the end of the inner wire 11b is connected to the knob 12a.
Next, the upstream end of the first elbow member 4 is connected to the lower end of the drain port main body 3, and the upstream end of the second elbow member 5 is further connected to the downstream end of the first elbow member 4. Connect.
Next, the upstream end of the trap member 7 is connected to the downstream end of the second elbow member 5.
With this connection, the pipe downstream of the bent portion of the first elbow member 4 and the pipe upstream of the bent portion of the second elbow member 5 are substantially horizontal along the bottom surface of the basin B. Placed in the direction. Further, the pipes from the bent portion of the second elbow member 5 to the downstream end and the water sealing portion 7a of the trap member 7 are vertically arranged along the inner wall surface of the cabinet portion.
Next, the downstream end of the trap member 7 is connected to the underfloor pipe via the through hole C1.
Next, the overflow drain main body 8b of the overflow pipe 8 is connected and fixed to the back side of the overflow drain 2 so that the drainage from the overflow drain 2 flows in.
Next, after the check valve 9 is disposed on the branch pipe 6 of the second elbow member 5, the end of the overflow pipe 8 is connected to the branch pipe 6 of the second elbow member 5.
Next, the end of the release wire 11 on the push-up shaft 11c side is connected to the connection portion 4a of the first elbow member 4. By this connection, the end of the outer tube 11 a of the release wire 11 is fixed to the first elbow member 4, and the push-up shaft 11 c at the end of the inner wire 11 b is arranged to be vertically movable at a position directly below the drain port 1.
Further, the drain shaft 1c and the plate portion 10d of the valve member 10 are disposed in the drain port 1, and the valve body 10a is disposed so as to cover the upper part of the drain port 1. Is completed.

  In the present embodiment, the configuration as described above allows a substantially horizontal portion from the bent portion of the first elbow member 4 to the downstream end portion and from the upstream end portion of the second elbow member 5 to the bent portion. Is a horizontal portion of the drainage pipe oriented substantially in the horizontal direction. A vertical portion from the bent portion of the second elbow member 5 to the downstream end and the water sealing portion 7a of the trap member 7 is a vertical portion of the drainage pipe. That is, the present embodiment is a drainage pipe of a drainage device in which the branch pipe portion 6 is provided on a side surface at a height position above the vertical portion and shifted below the horizontal portion.

In the wash basin S and the drain pipe of the wash basin S configured as described above, when the knob 12a is pushed down to advance the inner wire 11b toward the drain port 1, the push-up shaft 11c at the end of the inner wire 11b causes the valve shaft to move. Since the valve shaft 10c is pushed up by contacting the lower end of the valve shaft 10c to raise the valve body 10a at the upper end of the valve shaft 10c, the valve body 10a is separated from the drain port 1 and the drain port 1 is opened. In this state, when water is discharged into the basin B, which is a bath body, the drainage can be discharged from the opened drain port 1.
When the knob 12a is pulled up and the inner wire 11b is retracted toward the operation unit 12, the end of the push-up shaft 11c at the end of the inner wire 11b is lowered to the height of the bottom surface of the first elbow member 4. By this operation, the valve shaft 10c on the push-up shaft 11c also loses its support, and the valve shaft 10c and the valve body 10a descend, so that the valve body 10a comes into contact with the peripheral edge of the drain port 1 and closes the drain port 1. In this state, when water is discharged into the basin B, which is a bath body, the water can be collected in the basin B.
Thereafter, by performing a push-pull operation on the knob portion 12a, the opening and closing of the drain port 1 can be remotely controlled from a position separated from the drain port 1.

In the wash basin S and the drain pipe of the wash basin S configured as described above, when drainage is generated in the wash basin B by using the wash basin S which is a drainage device in a state where the drain port 1 is opened. Drainage flows through the drainage pipe from the drainage port 1 to the inside of the drainage body 3, the first elbow member 4, the second elbow member 5, and the trap member 7 in that order, and finally drains from the underfloor pipe to the sewage side. Is done. In addition, since the sealed water is collected in the sealed portion 7a of the trap member 7, the odor and the pests are prevented from flowing back to the indoor side.
Further, when water is discharged into the wash bowl B with the drain port 1 closed, the discharged water accumulates in the wash bowl B because the drain port 1 is closed. Then, when the accumulated water discharge reaches the lower end position of the overflow drain port 2, the water discharge subsequently flows into the branch pipe portion 6 of the second elbow member 5 from the overflow drain port 2 through the overflow drain pipe, and the check valve is provided. 9 opens according to the flow of the drainage, and flows through the drainage pipe in the order of the second elbow member 5 and the trap member 7. The above-mentioned spouting water is finally discharged from the underfloor piping to the sewage side, the water level in the basin B rises above the overflow drain port 2, and finally the spouting water overflows from the upper edge of the basin B. The situation can be prevented.

In the wash basin S and the drain pipe of the wash basin S of the second embodiment, the drain port 1 is closed, the spout is stored in the wash basin B, and then the operation is performed on the knob 12a of the operation unit 12, and the drain port is operated. When a large amount of drainage is generated in the flow path from the drain port 1 such as when the opening 1 is opened, a part of the drainage passes from the horizontal portion of the second elbow member 5 when passing through the second elbow member 5. Part of the drainage may go to the branch pipe 6 side. However, the following 1. 2. For the reasons described in (1), backflow from the vertical portion of the second elbow member 5 to the overflow pipe 8 side can be prevented.
1. Due to the throttle structure provided by the inclined surface 6a provided in the branch pipe portion 6, the flow path of the drainage from the horizontal portion of the second elbow member 5 toward the branch pipe portion 6 is narrowed, and the drainage water is discharged to the branch pipe portion 6 side. It is difficult to flow back in large quantities.
2. The check valve 9 disposed on the branch pipe section 6 acts on the drainage flowing into the branch pipe section 6 to close the flow path from the branch pipe section 6 to the overflow drain port 2. The backflow of the drainage from the horizontal portion of the member 5 hardly flows back to the overflow drain port 2 side.

In the second embodiment, when the construction is completed, the length from the upper end of the drain port 1 to the upper surface of the bottom surface of the first elbow member 4 is about 70 mm, and the inner diameter of the drain port main body 3 and the first elbow member The inner diameter of the vertical portion on the upstream side of the pipe 4 and the inner diameter of the seam between the drain port main body 3 and the first elbow member 4 are set to about 40 millimeters, and the inner surface thereof has no irregularities exceeding 1 millimeter. It is formed in. Further, the push-up shaft 11c is configured such that, when the construction is completed, the upper end thereof is located at substantially the same height position as the bottom surface of the first elbow member 4 when the push-up shaft 11c is lowered most. For this reason, by removing the valve member 10 from the drain port 1 and lowering the push-up shaft 11c, the inside of the drain port 1 can be extremely easily cleaned. Specifically, the length from the upper end of the drain port 1 to the upper surface of the bottom surface of the first elbow member 4 is about 70 mm, and the space below the opening of the drain port 1 is the first elbow member 4. A circular shape having a diameter of about 40 mm continues to the bottom surface. Therefore, the light in the room or the like easily reaches the bottom of the second elbow member 5 below the drain port 1, so that the cleaning worker can easily see the inside of the drain port 1 to the bottom face, and the hand of the cleaning worker can grasp the drain port. Since all inner surfaces from the opening 1 to the bottom surface of the first elbow member 4 can be easily reached and can be directly cleaned while holding a cleaning tool such as a sponge in a hand, cleaning is extremely easy. be able to.
In addition, the inner surface of the drain port main body 3, the inner surface of the vertical portion on the upstream side of the first elbow member 4, and the inner surface of the joint portion between the drain port main body 3 and the first elbow member 4 do not have irregularities of 1 mm or more. When the push-up shaft 11c is further lowered, the bottom surface of the second elbow member 5 and the upper end of the push-up shaft 11c are substantially the same, which also has a favorable effect on improvement in cleaning performance. .
As described above, the length from the upper end of the drain port 1 to the upper surface of the bottom surface of the first elbow member 4 can be set to about 70 mm, as described above, because the pipe from the overflow drain port 2 is first or This is because the height of the branch pipe portion 6 connecting the overflow pipe 8 can be omitted from the drain port main body 3 due to the configuration of connecting to the second elbow member 5.
In addition, if the length from the upper end of the drain port 1 to the upper surface of the bottom surface of the first elbow member 4 can be made shorter than about 70 mm, the cleaning ability of the cleaning operator in the drain port 1 can be reduced by the first hand. It easily reaches the bottom surface of the elbow member 4 and is improved accordingly.

Although the embodiments of the present invention are as described above, the present invention is not limited to the above-described embodiments, and can be freely changed without changing the gist.
For example, in the above-described embodiment, the drainage device is the washstand S provided with the washbasin B as a bath body, and is a drainage pipe for treating drainage from the drainage port 1 and the overflow drainage port 2 of the washbasin B. However, the present invention is not limited to the above embodiment, and may be provided, for example, at a drain port 1 at the bottom of a sink or a bathtub and at an overflow drain port 2 at a side face.
In the above embodiment, the elbow pipe is connected to the branch pipe section.

DESCRIPTION OF SYMBOLS 1 Drain port 2 Overflow drain port 3 Drain port main body 3a Flange part 3b Plate nut member 4 First elbow member 4a Connection part 5 Second elbow member 6 Branch pipe part 6a Inclined surface 7 Trap member 7a Water sealing part 8 Overflow piping 8a Hose pipe portion 8b Overflow drain port main body 9 Check valve 9a Water stop plate 9b Valve seat 9c Adapter 10 Valve member 10a Valve body 10b Weight 10c Valve shaft 10d Plate 11 Release wire 11a Outer tube 11b Inner wire 11c Push up Shaft 12 Operating part 12a Knob part S Wash basin B Wash basin B1 Mounting opening B2 Operating part mounting opening C Cabinet main body C1 Through hole D Pull-out member

Claims (6)

A drain pipe for a drain device having a tank body having a drain port and an overflow drain port,
A horizontal part oriented substantially horizontally,
A vertical portion bent in a substantially vertical direction from a horizontal portion,
A drain pipe for a drain device, comprising: a branch pipe portion into which drain water from an overflow drain port flows in a position or a direction deviated from a position facing a pipe body of a horizontal portion.   The drainage pipe of a drainage device according to claim 1, wherein the branch pipe part is provided on the horizontal part and on a side surface of the horizontal part.   2. The drainage pipe according to claim 1, wherein the branch pipe is provided on a side surface at a height position above the vertical portion and shifted downward from the horizontal portion.   4. The branch pipe according to claim 1, further comprising a check valve for allowing a flow of drainage to the downstream side, but preventing a backflow of the drainage to the branch pipe upstream. A drainage pipe for a drainage device according to any one of the above.   The drainage pipe for drainage equipment according to any one of claims 1 to 4, wherein the branch pipe portion is provided with a throttle structure in which the cross-sectional area of the pipe body decreases toward the downstream side.   The drainage pipe of a drainage device according to any one of claims 1 to 5, wherein a drainage trap is provided downstream of the vertical portion.

Images