JPH0881990A - Drainage device with trap - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a drainage device with a trap that can ensure sealing performance. [Configuration] The drainage device main body 7 is connected to the drainage port of the bathroom.
A substantially cylindrical leak pipe (28) that opens an intake port (31) is attached to the mounting part (10) with the inflow pipe (16) included. Accumulation part where wastewater accumulates
A discharge part that opens 38 and a discharge port 42 for discharging the inflowing wastewater
A trap body 34 is formed by partitioning 39 with an overflow wall portion 37 capable of overflowing drainage. The trap main body 34 is attached to the lower end of the leak pipe 28, the discharge portion 39 is connected to the intake port 31, the outlet 20 at the lower end of the inflow pipe 16 is opened to the retention portion 38, and the trap main body 34 is attached. A drain pipe communicating with the public sewer is connected to the discharge port 42. When a negative pressure is generated in the drain pipe due to the flow of the drainage, the discharge portion 39 has a negative pressure, the leak valve of the intake valve device provided via the leak pipe 28 moves, and the air flow path opens. Air flows into the discharge section 39 from the intake port 31 via the leak pipe 28, and
It is possible to prevent the wastewater of 38 from flowing into the discharge part 39 and opening the outlet 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device with a trap provided with a leak mechanism.

[0002]

2. Description of the Related Art Conventionally, there has been known a drainage device with a trap provided with, for example, a trap mechanism shown in FIG. 5 so that an odor from a public sewer or the like does not flow back to a washroom, a bathroom or the like through a drainage basin. .

A drainage device 81 with a trap shown in FIG.
Are provided below the drain port (not shown) of the unit bath 82 and the drain port 84 provided in the placing table 83 of the washing machine, and drain pipes 85a and 85b are connected to the drain device 81 with a trap, respectively. 85a and 85b penetrate through the slab which is the structure 87 of the building 86, and are connected below the slab. Further, they are led out into the wall of the building 86 and connected to the drainage vertical pipe 85c, and the underground drainage not shown. It is connected to public sewers, etc. through the mains.

[0004]

By the way, in the drainage device 81 with a trap shown in FIG. 5, when the building 86 is a condominium such as a condominium, for example, when drainage flows down the drainage pipe 85c, Negative pressure is generated on the upstream side of the pipe 85c and the drain pipes 85a and 85b connected to the drain vertical pipe 85c. Therefore, when negative pressure is generated, the negative pressure is generated and stays in the traps 88 and 88 of the drainage device 81 with a trap connected to the drainage pipes 85a and 85b, and the drainage port of the unit bath 82 and the platform 83 of the washing machine 83
The drainage that seals the drainage port 84 provided in the drainage pipe 85a, 85b flows into the drainage pipes 85a, 85b so that the drainage is sucked toward the drainage pipes 85a, 85b, the sealing water is destroyed, and the odor from public sewers is discharged from each drainage port. There is a rising problem.

In view of the above problems, it is an object of the present invention to provide a drainage device with a trap, which can ensure water sealing of the trap.

[0006]

According to a first aspect of the present invention, there is provided a drainage device with a trap, which has a tubular inflow pipe having a water collecting port at the upper end and an outlet at the lower end, and a lower end of the inflow pipe. Is located and a part of the drainage is retained, a discharge part that opens an outlet through which the inflowing drainage flows out, and the retention part and the discharge where the upper end is located above the lower end of the inflow pipe. A trap body provided at a lower part of the inflow pipe, and a lower end opening an intake port through which air is introduced. And a tubular body having a leak function that opens at the upper portion of the discharge portion of the trap body and introduces air into the discharge portion when a negative pressure is generated in the discharge portion.

A drainage device with a trap according to claim 2 is
In the drainage device with a trap according to the first aspect, the pipe body is provided with a valve body into which air can be introduced through an intake hole and which cannot discharge air from the upper portion of the discharge portion.

[0008]

In the drainage device with a trap according to claim 1, the lower end of the tubular body having a leak function for opening the intake port for introducing air is opened at the upper part of the trap body provided at the lower part of the inflow pipe, When a negative pressure is generated in the discharge part of the trap body that opens the discharge port where the drainage flows out, air is introduced from the intake hole to the discharge part through the pipe body, so even if a negative pressure occurs in the discharge part, the trap Prevents the wastewater that accumulates in the retention part of the main body from overflowing the overflow wall from the retention part to the discharge part and destroying the sealing water at the outlet opening in the retention part of the inflow pipe, and the odor from the discharge port. Is prevented from leaking from the water collecting port that collects wastewater through the outflow port.

The drainage device with a trap according to claim 2 is
In the drainage device with a trap according to claim 1, since the valve body is provided in the pipe body so that air can be introduced through the intake hole and air cannot be led out from the discharge portion, the odor from the discharge port passes through the pipe body. To prevent leakage from the intake hole.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of a drainage device with a trap according to the present invention will be described below with reference to FIGS.

In FIG. 2, reference numeral 1 denotes a building such as a wooden house or a condominium. The building 1 has a structure 2 such as a slab or a wall to partition a room such as a bathroom 3a or a washroom 3b. . A unit bath 4 is attached to the bathroom 3a, and the unit bath 4 is provided with a drain port (not shown) through which the waste water in the bathroom 3a and the bathtub 3c is collected and flows. In the washroom 3b, a mounting table 5 for mounting a washing machine (not shown) is mounted on the floor surface, and the mounting table 5 is provided with a drain port 6 into which waste water from the washing machine flows.

Further, the unit bath 4 is connected to a drainage device body 7 which penetrates the structure 2 and is watertightly connected to a drainage port. A drainage pipe 8a is watertightly connected to the drainage port 6 of the mounting table 5 through the structure 2.

As shown in FIG. 1, the drainage device main body 7 has a substantially cylindrical mounting portion 10 which is mounted on the drainage port of the unit bath 4. This mounting portion 10 has a body portion 11 formed in a tubular shape from a corrosion-resistant metal such as stainless steel or a steel material whose surface has been subjected to a corrosion-resistant treatment, and an outer peripheral direction is provided at one axial end of the body portion 11. Upper flange part that protrudes annularly in
12 and a lower flange 13 that is annularly protruded in the inner circumferential direction at the other end. Further, a male screw 14 is formed on the outer peripheral surface of the body portion 11.

Further, the drainage device main body 7 has an inflow pipe 16 formed of a synthetic resin such as vinyl chloride and having a substantially cylindrical shape. The inflow pipe 16 has a funnel portion 17 in which one end side in the axial direction, which is the upper side, expands into a trumpet shape with a large diameter, and a fitting with a slightly larger inner diameter formed at the end portion on the smaller diameter side of the funnel portion 17. It is formed with a substantially cylindrical flow-down portion 18 fitted and fixed to the joint portion 17a, and a water collecting port 19 is opened at the upper end on the funnel portion 17 side and an outlet 20 is opened at the lower end on the flow-lowering portion 18 side. It is formed in a cylindrical shape.

A flange portion 21 is formed at the end of the funnel portion 17 on the side where the funnel portion 17 expands so as to project in a flange shape in the outer peripheral direction and to be mounted on the lower flange 13 of the mounting portion 10. In addition, on the back surface of the collar portion 21 placed on the lower flange 13 of the mounting portion 10,
A seal member 22 such as an O-ring is provided so that the collar portion 21 is brought into watertight contact with the lower flange 13.

It should be noted that the mounting portion 10 is located on the inner periphery of the mounting portion 10 and is located above the flange portion 21 of the inflow pipe 16 on the unit bus 4 side.
A foreign matter removing member 24 is detachably provided so as to close the inner peripheral side of the. The foreign matter removing member 24 is composed of a lattice portion 25 and a tray portion 26. The lattice portion 25 is formed in a lattice shape so that drainage can flow, and the tray portion 26 has a small-diameter round hole (not shown) so that drainage can flow. There are multiple holes. The grid portion 25 and the saucer portion 26 prevent impurities such as hair (not shown) from flowing into the inflow pipe 16.

Further, the drainage device main body 7 is provided with a substantially cylindrical leak pipe 28 as a pipe body. This leak tube
Like the inflow pipe 16, the inflow pipe 28 is made of synthetic resin such as vinyl chloride and is formed into a substantially cylindrical shape having a diameter larger than that of the inflow pipe 16. Also,
The leak pipe 28 is formed with an air introduction part 29 that expands in a trumpet shape so that one end side covers the funnel part 17 of the inflow pipe 16, and the body part 11 of the mounting part 10 is formed on the inner peripheral side of this one end edge. A female screw 30 is formed which is screwed to the male screw 14 formed on the outer peripheral surface of the. Further, in the air introduction portion 29 of the leak pipe 28, a connecting portion 32 that projects outward in a cylindrical shape on the outer peripheral surface and opens an intake port 31 at the tip.
Are formed. And this leak pipe 28 is internally threaded
A male screw 30 is screwed onto the male screw 14 of the mounting portion 10 so as to enclose the inflow pipe 16 in a substantially coaxial manner with the inflow pipe 16. The leak pipe 28 is not limited to being coaxial with the inflow pipe 16.

Further, the drain device main body 7 is provided with a trap main body 34 attached to the lower end of the leak pipe 28. The trap body 34 includes a lower case 35 formed in a bottomed cylindrical shape having an open upper surface, and an upper case 36 covering the upper surface of the lower case 35.

The lower case 35 has a generally cylindrical overflow wall whose central axis is substantially coaxial with the central axis of the lower case 35 from the bottom.
37 is formed in a protruding manner, and a retaining portion is formed on the central axis side of the overflow wall portion 37.
38 is partitioned and a discharge part 39 is partitioned and formed on the outer peripheral side.

Further, the lower case 35 is formed with a discharge port connecting portion 43 which projects outward from the outer peripheral surface in a substantially cylindrical shape and has a discharge port 42 opened at the tip. Further, a branch pipe connecting portion 44 protruding outward in a substantially cylindrical shape is formed on the side opposite to the discharge port connecting portion 43 in the diametrical direction, and the branch pipe connecting portion 44 penetrates the discharge portion 39. It is formed so as to be connected to the overflow wall portion 37 so as to communicate with the retention portion 38.

On the other hand, the upper case 36 is formed in a substantially cylindrical shape fitted to the upper part of the lower case 35, and has a leak pipe 28 at the upper end.
A small-diameter coupling fitting portion 46 that fits the lower end of the is formed substantially coaxially. A positioning portion 47 is formed at the lower end edge of the coupling fitting portion 46 so as to project in a flange shape toward the central axis and the lower end of the leak pipe 28 comes into contact with the positioning portion 47.

Then, the lower end of the upper case 36 is fitted to the upper part of the lower case 35 so as to cover the upper surface of the lower case 35, and the trap body 34 is joined and formed, and the lower end of the inflow pipe 16 is the retention portion of the trap body 34. The lower end of the leak pipe 28 is fitted and fixed to the connecting fitting portion 46 of the upper case 36 so that the trap body 34 is attached to the lower end of the leak pipe 28 so as to be positioned inside the 38. Since the lower end of the inflow pipe 16 is located in the retention part 38 and the outflow port 20 opens in the retention part 38, the wastewater flowing down the inflow pipe 16 flows from the outflow port 20 into the retention part 38 and stays there. And inflow pipe
The outlet 20 at the lower end of 16 is blocked by the accumulated drainage, and the drainage flowing in exceeding the capacity of the retention part 38 is the overflow wall part.
It is designed to flow over 37 to the discharge part 39.

A drainage pipe 8a connected to the drainage port 6 of the mounting table 5 of the washroom 3b is fitted and fixed to the branch pipe connection portion 44 of the trap body 34 in the drainage device body 7. Then, the drainage of the washing machine placed on the placing table 5 is accumulated in the trap body 34 of the drainage device body 7 from the drainage port 6 through the drainage pipe 8a.
It is supposed to flow into 38. Further, a drainage pipe 8b is fitted and fixed to the drainage outlet body 43 of the trap body 34 and is connected to the drainage device main body 7, and the drainage pipe 8b is disposed in the wall which is the structure 2 of the building 1. The drainage vertical pipe 8c is connected via a branch pipe 8d. Then, the drainage flowing out to the discharge part 39 of the trap body 34 flows into the drainage vertical pipe 8c from the discharge port 42 via the drainage pipe 8b, and through the underground drainage main pipe (not shown) to which the drainage vertical pipe 8c is connected. It is designed to be discharged into public sewers.

On the other hand, as shown in FIG. 2, an air pipe 50, which is piped from the bottom to the top of the outside of the unit bath 4, is connected to the connecting portion 32 which opens the intake port 31 of the leak pipe 28. An intake valve device 51 having a leak function is provided at the upper end of the pipe 50.

As shown in FIG. 3, the intake valve device 51 includes a tubular portion 52 having a substantially cylindrical shape, a dome portion 53 having a lower surface opened so as to cover the upper surface of the tubular portion 52, and a valve body 54. It consists of and.

The tubular portion 52 has a substantially cylindrical connecting portion 56 into which the air tube 50 is fitted and fixed, and is integrally provided on one end side of the connecting portion 56 substantially coaxially and has a diameter slightly larger than that of the connecting portion 56. The small inner ring portion 57 and the inner ring portion 57 are formed into a substantially cylindrical shape. Further, in the tubular portion 52, a substantially tubular outer ring portion 58 having a diameter larger than that of the inner ring portion 57 is fitted to the outer periphery of the inner ring portion 57 by a plurality of ribs 59 protruding substantially vertically from the inner circumferential surface into a wall shape. It is fixed. Also,
At the lower end edge of the outer ring portion 58, a fixing portion protruding outward on the outer peripheral surface.
The fixing portion 60 is formed in a flange shape, and a fixing claw portion 61 protruding in a belt shape is formed substantially in the center of the fixing portion 60.

By mounting the outer ring portion 58,
An air flow path through which air can flow between the outer ring portion 58 and the inner ring portion 57
63 is divided, and an air introduction port 64 as an intake port is formed at the lower end of the air flow path 63.

Further, the dome portion 53 is formed in a substantially cylindrical shape having a diameter substantially the same as that of the outer ring portion 58 and having an upper end closed and a lower surface opened. Further, a guide groove portion 66 protruding in a rib shape along the axial direction is formed on the inner peripheral surface of the dome portion 53. Then, the fixing portion 60 of the outer ring portion 58 is provided on the lower end edge of the dome portion 53.
Is formed with a groove 67, and the fixing claw portion 61 is formed in the groove 67.
Are formed so as to engage with each other, and the dome portion 53 is fitted and attached to the outer ring portion 58 so as to cover the upper portion of the tubular portion 52.

On the other hand, the valve body 54 is formed in a flat plate ring shape whose width dimension is slightly wider than the distance between the outer ring portion 58 and the inner ring portion 57 of the tubular portion 52. Then, the valve body 54 closes the gap between the inner ring portion 57 and the outer ring portion 58 of the tubular portion 52, and the air passage
63 and the inside of the dome 53 are blocked.

Further, the dome portion is provided on the upper surface of the valve body 54.
Rib-shaped sliding portions 70 are radially formed corresponding to the guide groove portions 66 of 53. A sliding protrusion 71 is formed along the up-down direction so as to engage with the guide groove 66 at the end of the sliding portion 70 on the outer peripheral side facing the guide groove 66.
Is engaged with the guide groove portion 66, the valve body 54 is guided by the guide groove portion 66, and is disposed in the dome portion 53 slidably in the vertical direction.

Next, the operation of the above embodiment will be described.

First, the water used in the bathroom 3a is drained,
The water collecting port 19 of the inflow pipe 16 through the mounting portion 10 of the drainage device body 7
Is collected in. At this time, a part of impurities such as hair mixed in the drainage is separated and removed by the lattice portion 25 and the tray portion 26 of the foreign matter removing member 24.

Then, the drainage flows down the inflow pipe 16, flows into the retention portion 38 of the trap body 34, and accumulates therein. Due to the accumulation of the drainage, the outlet 20 at the lower end of the inflow pipe 16 is sealed by the accumulated drainage, and the odor from the trap body 34, the drain pipes 8a and 8b, and the vertical drain pipe 8c is discharged from the outlet 20 to the inflow pipe 16. It is designed not to climb into the bathroom 3a or the washroom 3b via the.

Further, when the drainage exceeds the capacity of the retention section 38, it flows into the discharge section 39 through the overflow wall section 37, and further from the discharge section 39 to the discharge port connection section 43 via the discharge port 42. It flows into the connected drainage pipe 8b and is discharged to a public sewer or the like via an underground drainage main (not shown) via the drainage vertical pipe 8c.

The drainage discharged by using a washing machine (not shown) flows into the retention part 38 of the trap body 34 from the drainage port 6 of the mounting table 5 on which the washing machine is placed via the drainage pipe 8a. Then, like the drainage from the bathroom 3a, a part of the drainage stays in the retention part 38, and the drainage that exceeds the capacity of the retention part 38 flows into the discharge part 39 through the overflow wall part 37 and is discharged. The water is discharged from the outlet 42 to a public sewer or the like via an unillustrated underground drainage main via the drainage pipe 8b and the drainage vertical pipe 8c.

Next, the operation of the above embodiment will be described.

When the drainage flows down the drainage vertical pipe 8c and the branch pipe 8d connected to the drainage pipe 8b, a negative pressure is generated in the drainage pipe 8b. Due to the generation of this negative pressure, the drain pipe is discharged through the discharge port 42.
The discharge portion 39 in the trap body 34 of the drainage device body 7 to which 8b is connected also has a negative pressure.

Further, when a negative pressure is generated in the discharge portion 39 in the trap body 34, the leak pipe 28 is connected to the trap body 34 and the lower end is opened to the upper portion of the discharge portion 39, and the leak pipe 28 is connected. A negative pressure is created in the air pipe 50 connected to the portion 32 and the inside of the dome portion 53 of the intake valve device 51 attached to the upper end of the air pipe 50.

Then, due to the generation of negative pressure in the dome portion 53,
The valve body 54 slides upward while being guided by the guide groove 66 due to the pressure difference from the atmospheric pressure in the air flow path 63 communicating with the atmosphere blocked by the valve body 54 via the air introduction port 64. Then the air flow path
63 opens. Due to the opening of the air flow path 63, air flows into the dome portion 53, passes through the air pipe 50, and flows from the intake port 31 to the discharge portion 39 through the leak pipe 28.

Therefore, a negative pressure is generated in the discharge section 39, and the atmospheric pressure in the discharge section 39 and the atmospheric pressure sealed by the drainage are in the bathroom.
Even if a pressure difference occurs with the atmospheric pressure in the inflow pipe 16 communicating with the inside of 3a, the air introduced from the intake valve device 51 through the intake port 31 brings the atmospheric pressure in the discharge portion 39 close to the atmosphere, It is possible to prevent the waste water staying in the staying part 38 from flowing out to the discharge part 39 and opening the outlet 20 of the inflow pipe 16, so that the outlet 20 is reliably sealed and the inside of the trap body 34 and the drain pipe 8a. , 8b, odor from the vertical drain pipe 8c from the outflow port 20 through the inflow pipe 16 to the bathroom
It is possible to prevent climbing in the 3a and the washroom 3b.

Further, the trap body 34 is positioned below the structure 2 to connect a plurality of drain pipes 8a, and the drain device body 7 is connected.
Since the space provided under the unit bath 4 can be reduced, the threshold at the entrance of the bathroom 3a can be lowered, and the trap body 34 needs to be provided on the mounting table 5 for mounting the washing machine in the washroom 3b. Therefore, the height of the mounting table 5 can be reduced. Further, it is not necessary to provide a plurality of drainage device main bodies 7,
Cost can be reduced.

Although the leak pipe 28 is formed so as to accommodate the inflow pipe 16 coaxially in the above embodiment, for example, the leak pipe 28 and the inflow pipe 16 are separately provided substantially parallel to each other, and Even if the pipe 28 is formed so that air can be introduced into the discharge portion 39 of the trap body 34, the same effect can be obtained.

Further, the intake valve device 51 in which the valve body 54 is slidable in the vertical direction is provided at the upper end of the air pipe 50 for explanation.
Intake port for leak pipe 28 without air pipe 50 or intake valve device 51
Air can be formed so as to be able to inhale only by opening 31. Further, any valve body that can introduce air into the trap body 34 and cannot pass air from the outlet 42 of the trap body 34 can be provided. In addition, the intake port 31
Also, the air introduction port 64 may be provided with a deodorant material, an aromatic material, or the like so that air can flow therethrough to prevent the leakage of odor.

Further, the outlet connection portion 43 of the trap body 34
On the opposite side in the diametrical direction, a branch pipe connecting portion 44 protruding outward in a substantially cylindrical shape was formed.The branch pipe connecting portion 44 collects drainage from the washbasin and drains from the kitchen. A plurality of drain pipes 8a may be provided so that they can be connected, such as collecting water.

Next, the construction of another embodiment of the drainage device with a trap of the present invention will be described with reference to FIG.

In the embodiment shown in FIG. 4, the drain pipe 8a to the branch pipe connecting portion 44 of the drainage device main body 7 of the embodiment shown in FIGS.
When connecting, the drain pipe 8a
The drain pipe 8a is connected so that the lower end of the inner peripheral surface of the above is higher than the upper end of the overflow wall portion 37 of the trap body 34.

Therefore, in the embodiment shown in FIGS. 1 to 3, the drain pipe connected to the trap body 34 in a substantially horizontal direction.
Drainage from the washing machine may accumulate in 8a, and the drainage pipe 8a may be clogged. However, in the embodiment shown in FIG. 4, by connecting the S-shaped pipe 71, drainage from the washing machine is drained into the drainage pipe 8a. It is possible to prevent stagnation and prevent clogging of the drainage pipe 8a.

[0048]

According to the drainage device with the trap of the first aspect, the lower end of the pipe body, which opens the intake port for introducing air into the upper part of the trap body, is opened, and the negative pressure is applied to the discharge part in the trap body. When air is generated, air is introduced from the intake hole to the discharge part, so even if negative pressure occurs in the discharge part, drainage flows from the retention part to the discharge part over the overflow wall part and the sealing water at the outlet is destroyed. It is possible to prevent the odor from leaking, and to prevent the odor from the discharge port from leaking from the water collecting port through the outflow port.

According to the drainage device with a trap according to claim 2, in the drainage device with a trap according to claim 1,
Since the valve body is provided in the pipe body so that the air can be introduced through the intake hole and the air cannot be led out through the discharge portion, it is possible to prevent odor from the discharge port from leaking through the intake hole through the pipe body.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a drainage device main body of an embodiment of a drainage device with a trap of the present invention.

FIG. 2 is a cross-sectional view showing a building in which the drainage device main body is arranged.

FIG. 3 is a sectional view showing the intake valve device of the above.

FIG. 4 is a sectional view showing a building in which a drainage device main body of another embodiment of the drainage device with a trap of the present invention is arranged.

FIG. 5 is a cross-sectional view showing a building in which a drainage device body of a conventional example is arranged.

[Explanation of symbols]

 7 Drainage device main body 16 Inflow pipe 19 Water intake port 20 Outlet port 28 Leak pipe as a pipe body 31 Intake port 34 Trap body 37 Overflow wall part 38 Retaining part 39 Discharge part 42 Discharge port 54 Valve body 64 Air introduction as an intake port mouth

Claims (2)

[Claims] 1. A tubular inflow pipe having a water intake opening at the upper end and an outflow opening at the lower end, and a retention part at which the lower end of the inflow pipe is located and a part of the waste water is retained, The drainage part that opens the discharge port through which the drainage flows out, and the drainage that flows into the retention part by dividing the retention part and the discharge part with the upper end positioned above the lower end of the inflow pipe is the drainage. A trap body provided at the lower part of the inflow pipe with an overflow wall part overflowing the above-mentioned part, an intake port for introducing air is opened, and a lower end is opened at an upper part of the discharge part of the trap body and is provided in the discharge part. A drainage device with a trap, comprising: a pipe body having a leak function for introducing air into the discharge part when a negative pressure is generated in the drainage device. 2. The drainage device with a trap according to claim 1, wherein the pipe body is provided with a valve body into which air can be introduced through an intake hole and which cannot discharge air from an upper portion of the discharge portion.