JP2002302977A - Siphon type drain system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new siphon type drain system. SOLUTION: An architectural drain system is composed of a vertical pipe penetrating through the respective floors, a plurality of horizontal drain pipes 6 derived from a water use section apparatus 5 of the respective floors, and a confluent part joint connecting the horizontal drain pipes to the vertical pipe, and arranged in a position lower than the horizontal drain pipes. This siphon type drain system has a water sealing trap 30 in the respective horizontal drain pipes, and has a joining part for mutually connecting the horizontal drain pipes 6 on the vertical pipe side from a part provided with the water sealing trap 30, and simultaneously generates a siphon phenomenon in the plurality of horizontal drain pipes at draining time by storing fluid once in the horizontal drain pipes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention proposes a new siphon type drainage system.

[0002]

2. Description of the Related Art Drainage systems for multi-family houses and detached houses, which have been conventionally used, are designed to discharge drainage from drainage plumbing (hereinafter referred to as "standpipe") from plumbing equipment on each floor such as a kitchen or a wash basin. Connected to the drainage pipe (hereinafter referred to as horizontal drain pipe) and led to the junction joint (hereinafter referred to as “joint”) with a very slight gradient to the standing pipe, and joined on the same floor as the plumbing fixture It was common to let them. Then, at this junction, they merge at right angles to the standpipe or merge at a slight angle, but this joint uses a large capacity, especially one with a large horizontal cross-sectional area. . For this reason, the joint was heavy and expensive. In addition, a large space is required, and the degree of freedom in design tends to be lost. Of course, horizontal drainage pipes of various thicknesses are adopted according to the expected drainage amount of the equipment, and it is necessary to provide a reference gradient, which is a bottleneck in architectural planning. On the other hand, even if water leakage occurs due to clogging or aging of the drainage horizontal pipe, it cannot be repaired unless the interior of the building is destroyed, and replacement of the drainage horizontal pipe requires interruption of use and enormous costs.

[0003] In such a conventional system, the vertical velocity component of the fluid flowing in the horizontal drain pipe is extremely small.
At the confluence with the riser, the fluid in the horizontal drainpipe occupies an extremely large pipe cross-sectional occupation rate, and the flow resistance at the time of merging with the fluid descending in the riser becomes abnormally large.
For this reason, interference with the fluid flowing through the vertical pipe, which occurs when the fluids flowing through the horizontal drain pipe merge, causes an increase in negative pressure inside the pipe, which causes trap opening and abnormal noise.

[0004] In view of the above-mentioned conventional techniques, the present inventor has proposed a new technique in which the flow of fluid in the horizontal drain pipe is set to a full-flow pressure / siphon flow. That is, the content of the proposal is a drainage system including a standing pipe penetrating each floor, a drainage horizontal pipe guided from a plumbing device on each floor, and a joint connecting the drainage pipe to the vertical pipe at a position lower than the drainage horizontal pipe. And
Preferably, the level of the joint is lowered by about one floor as much as possible from the level of the drainage floor slab, and the vertical velocity component is sufficiently imparted to the fluid in the horizontal drainage pipe before joining the fluid in the vertical pipe.

In the above-mentioned proposed technique, the drainage from each plumbing device is performed in an independent drain horizontal pipe, and the vertical velocity component is increased with the fluid in the vertical pipe, so that the so-called ventilation resistance is reduced. It was significantly reduced. For this reason, the negative pressure generating action in the pipe is extremely reduced as compared with the conventional drainage system. Since the fluid in the horizontal drain pipe becomes a full flow due to the siphon phenomenon, a relatively thin pipe may be used, and there is no need to provide a gradient toward the standing pipe, and the workability thereof is extremely excellent.

[0006]

SUMMARY OF THE INVENTION The present invention seeks to further improve the above-mentioned proposed drainage system, and more specifically, a plurality of drainage systems arranged in a device having a relatively large expected drainage amount. The purpose is to bring siphon effect to the flexible tube at the same time.

[0007]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a vertical pipe penetrating each floor, a plurality of horizontal drain pipes led from a plumbing device on each floor, and a horizontal drain pipe connecting the vertical drain pipe to the vertical pipe. And a drain joint system installed at a lower position than the merging section joint, each of the drain horizontal pipes is provided with a water seal trap, and the drain horizontal pipes are connected to each other on the upright side from the portion where the water seal trap is disposed. To temporarily store the fluid in the horizontal drain pipe, and simultaneously generate a siphon phenomenon in a plurality of horizontal drain pipes at the time of drainage.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, the present invention provides a new technique for making the flow of fluid in a drain horizontal pipe a full flow, i.e., a siphon flow, that is, a drain horizontal pipe is provided with a water seal trap, and a drain horizontal pipe is provided. This system utilizes the siphon phenomenon in the wastewater, and is improved to a more effective system. In such technology, a relatively small-diameter tube (usually 20A)
In particular, by using the same diameter pipe, a system having a high degree of freedom in construction planning, workability, and maintenance and management can be obtained.

On the other hand, in the case of a tool which is expected to exceed the drainage capacity of the pipe having a diameter of 20 A, two drain horizontal pipes are arranged in parallel in advance to cope with this. However, according to experiments, when two pipes are arranged in parallel, siphons do not occur simultaneously in both pipes even if both pipes are drained under the same conditions. On the contrary, it turned out that the flow became slow. If this phenomenon is left unchecked, the effect of increasing the angle of the pipe will be diminished, resulting in inefficiency.

The present invention is directed to finding and improving the occurrence of such a phenomenon so that, when a siphon flow occurs in one of the drain horizontal pipes, the siphon flow propagates to the other drain horizontal pipe. Intended. That is, the problem is solved by providing a connecting portion at a specific position of the drain horizontal pipe extending from the appliance. More specifically, the drain horizontal pipe is provided after a plurality of drain horizontal traps extending from the appliance. When the siphon is ahead of one drain horizontal pipe, the siphon suction force is also transmitted to the other drain horizontal pipe, and siphon flow is induced in both drain horizontal pipes. Wastewater treatment capacity corresponding to the amount of wastewater from The horizontal drainage pipe connected to the apparatus is a pipe of the same diameter, preferably a flexible resin pipe such as a polybutene pipe having a diameter of 20 mm, and the merit in work is remarkably large. In particular, polybutene pipes have been developed with a one-touch connection method, and are most suitable for connection with water seal traps.

The water ring trap provided in the horizontal drain pipe fills the horizontal drain pipe with drainage and facilitates the occurrence of a siphon phenomenon. Since the pressure fluctuation is extremely small, the water is hardly broken and the sound generated is small. There is a feature. or,
Since there is no need to provide a trap specific to each device, a large cost reduction can be achieved for the entire drainage system. A first example of a water seal trap is an upwardly facing U-shaped pipe provided at a position lower than the horizontal level of the horizontal drain pipe. The second example is a downward U-shaped tube provided at a higher position. Of course, a double U-shaped tube provided with these may be used. It should be noted that any position may be provided at the horizontal level of the drain horizontal pipe, but it is better to be as close as possible to the vertical pipe.

As described above, the horizontal level of the horizontal drain pipe is provided with a water seal trap to prevent the backflow of drain water, detergent bubbles, gas in the pipe, etc. from the vertical pipe.
A tubular water seal trap having an effective water depth of 50 mm is provided. The drainage horizontal pipe itself is used as a water seal trap to effectively use the vertical head to counter the air pressure fluctuation in the pipe from the vertical pipe and the backflow water pressure, and to prevent backflow of sewage, gas, detergent foam, etc. In addition to ensuring hygiene and improving cleanliness, there is no noise caused by air suction at the end of drainage, which is useful for preventing drainage noise. Conventionally, if the drain horizontal pipe connected to the appliance drains at full flow, the fluid will run out when the drain is exhausted.At the end of drainage, the siphon suction force will strongly suction the air at the drain port of the appliance through the drain horizontal tube and interfere with the running water in the drain At this time, a loud suction sound is emitted. However, this drainage system also corresponds to a countermeasure against air suction noise at the time of drainage, and it can be said that this is an improvement.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drainage system of the present invention will be described below in more detail with reference to the drawings. FIG. 1 is a basic conceptual diagram of the present drainage system, wherein 1 and 2 show floor slabs on each floor, and 3 shows a pipe shaft wall. Each floor has a diameter of 10
A 0 mm standing pipe 4 penetrates, and a horizontal drain pipe 6 from a plumbing device 5 is connected to this.

In this figure, a basin 5 is shown as an appliance,
A polybutene tube 6 having a diameter of 20 mm is connected to this. The polybutene pipe 6 is stretched in the horizontal direction on the floor slab 2 without gradient, reaches the vicinity of the standpipe 4, changes its direction downward, reaches the joint 7, and is connected to the standpipe 4. Incidentally, two polybutene tubes 6 are installed in the basin 5 and further provided with a water seal trap 30 and a connecting portion 10, which are not shown here.

Although the polybutene pipe 6 may be stretched as it is, a bent portion may be formed by using a bent pipe 8. In this example, the joint 7 is provided in the vicinity of the floor slab 1 downstairs, has an inverted triangular shape extending upward with respect to the standing pipe 4, and is provided with a standing pipe 4 and a polybutene pipe 6 on an expanding surface 7a having a diameter of 150 mm. Is connected. That is, this expanding surface 7a is provided with a connection port 7b for connecting to the upright pipe 4 and a plurality of upright holes 7c. In particular, for example, a push lock described later is attached to the upright hole 7c, and the tip of the polybutene pipe 6 is connected thereto. You.

In this example, the height difference from the floor slab 2 to the joint 7 is 2.5 m. Therefore, the drainage fluid in the stack pipe 4 is accelerated in the vertical direction and falls vertically (having a substantially constant flow rate), whereas the drainage fluid from the appliances on each floor is discharged onto the floor slab 2 by the polybutene pipe 6. In the lateral direction, and then the velocity component in the vertical direction is increased by a drop (2.5 m) from the joint 7, and merges with the fluid in the vertical pipe 4 in the joint 7. It is done without difficulty. In the figure, reference numeral 7h denotes a valve provided at the leading end of the horizontal drainage pipe 6, and has, for example, a backflow prevention function and / or a flow rate adjustment function.

FIG. 2 shows a drainage horizontal pipe 6a which is the center of the present invention.
FIG. 3 is an enlarged view of the water seal trap 30. Two polybutene pipes (diameter 20 mm) 6a, 6b are connected to the drain port 5a of the basin 5, and these are extended in parallel along the floor surface to reach the vicinity of a standpipe (not shown) and stand there. It is hung along a pipe. In this example, an inverted U-shaped water seal trap 30 is provided at a position immediately before hanging. And this water seal trap 3
The polybutene pipes 6a, 6b are located just after
Are connected to each other by a connecting pipe 10. The water seal trap 30 is a water seal trap formed by a U-shaped pipe formed downward on the downstream side of the polybutene pipe 6, that is, on the standpipe side. The water depth H of the water seal trap 30 is preferably set to 50 mm or more. The drainage always and reliably stays in the water seal trap 30 and the drainage horizontal pipes 6a and 6b, and the siphon effect becomes large. A suction force is provided to the lateral tube via the coupling tube 10, which also induces a siphon effect.

Referring further to the siphon effect, FIG. 4 shows an enlarged view of the vicinity of the polybutene pipes 6a and 6b and the connecting pipe 10. In the drainage operation, for example, a siphon phenomenon (suction force, arrow A) is first observed on the pipe 6a side. Is seen, the drainage in the pipe 6a is of course drained by the siphon phenomenon. However, in the present invention, since both pipes 6a and 6b are connected by the connecting pipe 10, , Siphon suction force not only on the drain horizontal pipe 6a but also on the parallel drain horizontal pipe 6b side (arrow B)
The siphon phenomenon occurs on the side of the horizontal drain pipe 6b, and the drain is quickly performed almost simultaneously at both pipes.

The connecting tube 10 used in the present invention is not particularly limited, and a short tube is preferably used.
A metal tube or a resin tube may be used. The connection with the drain horizontal pipe is not particularly limited. For example, a one-touch type push lock described later can be adopted.

The water seal trap 30 of the present invention is also not particularly limited, and FIGS. 5 to 6 show other examples. FIG. 5 is a conceptual diagram showing a second example of the water seal trap 30, in which a U-shaped tube formed upward on the upstream side of the polybutene tube 6, that is, on the instrument side, is used as the water seal trap 30, and immediately thereafter, the connecting tube 10 is connected.
Are connected. This water seal trap 30 was formed of a PVC pipe.

FIG. 6 is a conceptual diagram showing a third example of the water seal trap 30. The water seal trap 3 has a bent tube having both upward and downward formed on the standpipe side of the polybutene tube 6 at the same time.
It is set to 0.

FIGS. 7 and 8 show the drainage horizontal pipes 6a and 6b of the present invention.
Or the drainage horizontal pipes 6a,
One-touch push-lock mechanism 20 used for connection between 6b and water seal trap 30, and furthermore to connection pipe 10
FIG. FIG. 7 shows a push lock mechanism 2
FIG. 8 is a cross-sectional view showing a state before connection with the polybutene tube 6 using the water seal trap 30 as a water seal trap 30, and FIG. 8 is a view showing a cross section after connection.

In the push lock mechanism 20, a grab ring 22, a washer 23, an O-ring 24, and a cap 25 for supporting these are screwed into the socket 21 of a water seal trap 30 made of PVC. The socket 21 is formed with a female screw portion 26, which is connected to an unillustrated pipe on the instrument side around the water. Meanwhile, cap 2
Polybutene tube 6 with collar 27 fitted inside tip 5
Is inserted, and the grab ring 22 cuts into the outside of the polybutene tube 6 and is connected. The connection between the two is secure and the work is very simple.

[0024]

According to the present invention, the entire drainage system is constituted by employing a plurality of horizontal drainage pipes for a device which is expected to have a large drainage volume, and each having a water seal trap.
Further, a connecting pipe for connecting both pipes is provided at the tip side of the water seal trap, and when a siphon is generated in one of the drain horizontal pipes, the siphon is immediately propagated to the other horizontal pipe. Yes, the drainage is carried out promptly, but it is characterized by the fact that there is no pressure fluctuation so that the water is hardly broken and the noise at the time of drainage is reduced.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a drainage system according to the present invention.

FIG. 2 is an overall view showing a basic structure of a horizontal drainage pipe.

FIG. 3 is a conceptual diagram showing a first example of a water seal trap.

FIG. 4 is a view showing a state in the vicinity of a coupling pipe of FIG. 2;

FIG. 5 is a conceptual diagram showing a second example of a water seal trap.

FIG. 6 is a conceptual diagram showing a third example of a water seal trap.

FIG. 7 is a sectional view of a one-touch type push lock used in the present invention.

8 is a cross-sectional view of the one-touch type push lock shown in FIG. 7 when connected to a polybutene tube.

[Explanation of symbols]

 1, 2 ‥ floor slab, 3 ‥ pipe shaft wall, 4 ‥ standing pipe, 5 ‥ plumbing fixture, 6 ‥ horizontal drain pipe (polybutene pipe), 7 ‥ junction, 8 ‥ bent pipe, 10 ‥ connecting pipe, 20 ‥ push lock mechanism, 21 ‥ socket, 22 ‥ grab ring, 23 ‥ washer, 24 ‥ O-ring, 25 ‥ cap, 26 ‥ internal thread, 27 ‥ collar, 30 ‥ water seal trap, H ‥ effective water depth.

Claims (6)

[Claims] 1. A standpipe penetrating each floor, a plurality of drainage lateral pipes led from a plumbing device on each floor, and a junction installed at a position lower than the drainage horizontal pipe connecting the drainage horizontal pipe to the standpipe. In a construction drainage system comprising a joint, each drainage horizontal pipe is provided with a water seal trap, and a connecting portion for interconnecting the drainage horizontal pipes on the upright side from a portion where the water seal trap is disposed, A siphon-type drainage system characterized by storing fluid in a drainage horizontal pipe and causing siphon phenomena to occur in a plurality of drainage horizontal pipes simultaneously when draining. 2. The siphon-type drainage system according to claim 1, wherein the water ring trap is an upward U-shaped pipe provided at a position lower than the horizontal level of the horizontal drain pipe. 3. The siphon type drainage system according to claim 1, wherein the water ring trap is a downward U-shaped pipe provided at a position higher than a horizontal level of the horizontal drain pipe. 4. The siphon type drainage system according to claim 1, wherein the drainage horizontal pipe is a flexible pipe. 5. The connection according to claim 1, wherein the connection portion is a flexible tube.
A siphon-type drainage system as described. 6. A siphon-type drainage system according to claim 1, wherein the drainage horizontal pipe is placed on the floor slab without gradient.