JP2010126894A - Self-sealing trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-sealing trap which functions smoothly while making its overall height low. <P>SOLUTION: This self-sealing trap for treating wastewater from drainage equipment is made of an approximately tubular material with flexibility, and provided in a channel of drain piping. One end, on the side of the inflow of the wastewater, of a tubular body is formed in a flat shape; and a tapered portion is provided in the intermediate portion of the tubular body. The self-sealing trap includes a closing portion 2 which closes the tubular body by making inner surfaces at the other end of the tubular body abut on each other, which is elastically deformed in the application of the pressure of a fluid forced to flow to the side of an abutting surface from the flat-shape side of the tubular body, so as to open the inside of the tubular body and allow the passage of the fluid, and which prevents the passage of the fluid by maintaining a closed state in the application of pressure of the fluid forced to flow to the flat-shape side from the abutting surface side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a self-sealing trap for drainage pipes, and more particularly to a self-sealing trap for the purpose of making the overall height of the self-sealing trap lower than that of a soft material.

  Conventionally, various household devices that generate wastewater by use, such as waterproof pans for washing machines, bathrooms, washstands, sinks, etc. (hereinafter, devices that generate wastewater by such use are called “drainage devices”) It has been known. These drainage devices are usually provided with drainage piping in order to treat wastewater generated by use to the sewage side. These drainage pipes are used by changing the pipe structure as needed.

  By the way, since the wastewater is usually discharged to the sewage side, simply connecting the drainage outlet, which is the entrance of the drainage of the drainage equipment, to the sewage directly with the drainage pipe causes odors and pests to flow back through the drainage pipe, It will enter the indoor side from the drain. In order to prevent this, a member called a drain trap that prevents backflow of odors and pests is disposed in the drain pipe. As this drain trap, for example, the drain trap shown in JP-A-2003-56036 is provided with a drainage reservoir called sealed water inside, and the drainage passage is sealed with water, so that odors and Sealed traps with a trap function to prevent backflow of pests are common. However, since this sealed trap uses water drainage to seal water, there is a problem that causes a phenomenon called breakage that causes the seal water to evaporate and lose the trap function unless drainage equipment is used for a long time. is there.

Therefore, a drain trap called a self-sealing trap that does not use drainage has been proposed.
FIG. 7 shows an example thereof. In a substantially cylindrical member made of an elastic material, a tapered portion T is provided on a side surface portion in order to connect one end thereof to a circular tubular body. It is a self-sealing trap that constitutes a closed portion in which the ends on the front end side of T are in contact with each other and closed by elasticity. When this self-sealing trap is used, in the drainage pipe, the end of the self-sealing trap that is opened is connected to the end of the drainage pipe from the drain outlet, and the downstream side is piped toward the sewage side pipe or the like.

In a state where drainage equipment is not used and drainage does not occur, the closed portion of the self-sealing trap is closed, so that backflow of odors and pests is prevented. For this reason, odors and pests do not enter from the sewage side to the indoor side.
When drainage flows into the drainage port using drainage equipment, drainage flows from the upper circular opening connected to the drainage pipe connected to the drainage port (hereinafter referred to as “pipe connection”) of the self-sealing trap. The drainage is collected inside the self-sealing trap, and the end portion with elasticity is pushed open by the weight (water pressure) of the self-sealing trap, and the drainage is discharged from the inside to discharge (naturally However, during this drainage, the drainage becomes an obstacle, and no odor or pest backflow occurs). When the drainage equipment has been used and the drainage inside the self-contained trap has sufficiently flowed out, the downstream end is again blocked by elasticity, preventing backflow of odors and pests. And no infestation of pests.
Since only one of the blocked state or the drainage state occurs, odors and pests are prevented from entering the indoor side from the sewage side, and odors and pests enter the indoor side from the sewage side by the self-sealing trap. The effect of the trap function can be obtained.

JP 2003-56036 A No. 60-24788

However, the above conventional example has the following problems.
In recent years, there have been many attempts to make the total height of the drain trap as low as possible. For example, in the case of a drainage device equipped with a cabinet such as a sink or sink, the interior space of the cabinet under the sink bowl / sink where the drain trap is placed is used as a storage space using a drawer, etc. There is a demand for the wastewater trap to be an object so that the overall height is as low as possible and does not hinder the storage space.
In addition, in the case of washing machine bread piping and bathroom piping, in an apartment house, so-called condominium, the overall height remains the same, but the number of rooms per building is somewhat increased by lowering the height of each floor. There is a strong demand to do. For example, if one floor is 250 centimeters and a 24-story apartment house, one floor is 10 centimeters narrow and 240 centimeters, the overall height is almost the same, but a 25-story condominium. The number of rooms per building increases. However, if the height of the living space is lowered, the comfort of life is lost, so the height of the living space remains the same, and the underfloor space where drainage piping is performed is made narrower in the vertical direction. The use of low-floor piping, which lowers the height of each floor, is popular. For this reason, it has been desired to reduce the overall height of a drain trap, which is a member employed in low-floor piping.

However, when a self-sealing trap is used as a drain trap, there are the following problems in reducing the overall height. As described above, the upstream side of the self-sealing trap must maintain a circular shape with a certain diameter for connection with the pipe of the drainage pipe, but on the downstream side, the side surfaces of the self-sealing trap are in contact with each other using elasticity. An obstruction must be formed. The outer diameter or inner diameter of the pipe body of the drainage pipe is determined based on a standard such as the JIS standard and cannot be reduced freely. For this reason, in order to allow the side surfaces to come into contact with each other at the closed portion while reducing the overall height while providing a certain width on the upper end side of the self-sealing trap, the inclination angle of the tapered portion is correspondingly increased. It is necessary to be large and gentle (so as to be close to the horizontal) with respect to the central axis.
However, if the angle formed between the contact surfaces of the taper portion becomes too large, the action of the weight of the drainage acts only in the downward direction, does not act in the direction of expanding the opening of the closed portion of the self-sealing trap in the horizontal direction, The function cannot be performed sufficiently. In order for the self-sealing trap to work effectively, as in the conventional example shown in FIG. 7, the inclination angle of the tapered portion is somewhat small with respect to the central axis of the self-sealing trap body, and the surfaces where the blocking portion abuts are formed. It is necessary to reduce the angle and facilitate the action of the weight of the drainage to push the side surface of the closed portion. For this reason, the inclination angle of the tapered portion of the self-sealing trap cannot be increased to a certain extent with respect to the central axis of the self-sealing trap body, and therefore the overall height cannot be lowered. The present invention has been invented in view of the above problems, and provides a self-sealing trap that functions smoothly while keeping its overall height low.

The present invention according to claim 1 is a self-sealing trap for treating drainage of drainage equipment.
In the flow path of the drainage pipe, it is made of a flexible material with a substantially cylindrical shape, and one end of the cylindrical body on the side into which the drainage flows has a flat shape, and a tapered portion is formed in the middle part of the cylindrical body And the inner surface of the other end of the cylindrical body is in contact with each other so that the cylindrical body is closed and elastically deformed against the pressure of the fluid that is going to flow from the flat shape side to the closed side of the cylindrical body. It is characterized by having a closing portion 2 that opens and allows fluid to pass, and maintains the closed state against the pressure of the fluid that flows from the closing side to the flat shape side to prevent passage of fluid. It is a self-sealing trap.

The present invention according to claim 2 is a self-sealing trap of the drainage pipe,
The upstream end portion of the self-sealing trap having a flat shape is made of a hard member, the upstream end portion has a substantially circular shape in the axial direction, and the downstream side has an upstream end shape of the self-sealing trap. The self-sealing trap according to paragraph 0009 above, wherein the self-sealing trap is provided with an adapter member 5 having a shape that fits in a watertight manner.

The present invention according to claim 3 is the self-sealing trap of the drainage pipe,
The self-sealing trap according to paragraph 0010, wherein the upstream end portion of the adapter member 5 forms a connection structure with a tube body having an arbitrary standard size or standard shape.

Since the self-sealing trap of the present invention is configured as described above, the following excellent effects are obtained.
1) According to the first aspect of the present invention, the cylindrical body forming the self-sealing trap has a flat shape at one end on the side into which the drainage flows, so that the overall height of the self-sealing trap is reduced and the taper is brought into contact. The angle formed by the surfaces can be reduced, and the operation of draining the self-sealing trap can be made smooth.
2) In the present invention according to claim 2, by changing the shape from a circular shape to a flat shape by providing an adapter member made of a hard material at the upstream end of the trap body having a flat shape. It can be performed with a very low height and can be very easily connected to a circular tubular body.
3) In this invention of Claim 3, it can be made to employ | adopt many by general drainage piping by forming the end part part of an adapter member into a standard dimension or a standard shape.

An embodiment of the self-sealing trap of the present invention will be described with reference to FIGS.
The embodiment of the present invention shown in FIGS. 1 to 4 includes a self-sealing trap body 1, an adapter member 5, and a cylindrical member 8 that accommodates the self-sealing trap body 1 therein. .
The self-sealing trap body 1 is made of a material having elasticity such as silicon rubber, and the whole forms a cylindrical body so that drainage passes through the inside from one end to the other end.
One end of the self-sealing trap body 1 and the end connected to the drainage pipe connected to the drainage port of the drainage device into which the drainage used by the drainage device flows, are flat or oval shaped (hereinafter referred to as a circular shape). The self-sealing trap is formed on the side surface of the middle portion of the self-sealing trap body 1 and the side surface continuous with the longitudinal surface of the flat portion (connected to the lower side). A first taper portion 3 having an inclination toward the inside of the main body 1 is provided, and the other inner surfaces of the self-sealing trap main body 1 continuous below the first taper portion 3 are in contact with the inner surfaces of the ellipse in the longitudinal direction. Thus, the self-sealing trap body 1 constitutes a closed portion 2 that does not cause ventilation or the like. When the drainage flows into the self-sealing trap body 1 from a flat opening (hereinafter referred to as “inlet 4”) and the drainage is accumulated inside, the closed portion 2 closed by the weight (water pressure) of the drainage opens. The drainage is configured to be discharged to the connection destination at the downstream end. In addition, even if the fluid pressure (atmospheric pressure, water pressure) is applied from the downstream side to the upstream side, the closed portion 2 maintains the closed state and prevents the passage of the fluid.
The adapter member 5 is a cylindrical member made of a hard resin, which is a hard material. The adapter member 5 is connected to the drain outlet side of the drainage device, and the upstream end is a tubular body having a standard size and shape conforming to the standards of JIS and the like. And the other end is provided with a flat connection portion 9 having a shape that matches the flat shape of the inlet 4 of the self-sealing trap body 1, and the middle portion between both ends is self-sealing. A second taper portion 6 is provided that forms an angle larger than the first taper portion 3 of the trap body 1 with respect to the central axis of the self-sealing trap body. Moreover, the external thread as the attaching part 10 attached to the outer peripheral surface of the pipe connection part 7 with the inner surface of the end of the following cylindrical member 8 watertightly is provided.
The cylindrical member 8 is a member having a cylindrical shape for connecting to the drain pipe while housing the self-sealing trap body 1 therein, and the inner surface of one end is the outer peripheral surface of the pipe connecting portion 7 of the adapter member 5 In addition, a female screw serving as a mounted portion 11 that is screwed into the mounting portion 10 provided in the case is provided, and the other end conforms to a standard such as JIS so that water-tight connection with a drainage pipe on the sewage side is possible. It is provided with a downstream side pipe connecting portion 12 for connecting to a pipe having a standard size and shape.

The self-sealing trap of the present invention configured as described above is connected between the drain pipe from the drain port of the drainage device and the drain pipe on the sewage side as follows.
First, the inlet 4 of the self-sealing trap body 1 and the flat connection portion 9 of the adapter member 5 are connected in a watertight manner. Next, the self-sealing trap body 1 is inserted into the cylindrical member 8 so as to be covered by the cylindrical member 8, and the male screw of the mounting portion 10 provided on the outer peripheral surface of the pipe connecting portion 7 of the adapter member 5, The female screw of the attached portion 11 provided on the inner surface of the end portion is screwed together, and the cylindrical member 8 and the adapter member 5 are attached and fixed. Finally, the pipe connection part 7 of the adapter member 5 is connected to the drainage pipe from the drainage port of the drainage device, and the downstream side pipe connection part 12 of the cylindrical member 8 is connected to the drainage pipe on the sewage side, Connection is complete.

The self-sealing trap configured as described above is used as follows.
In the state where drainage equipment is not used and drainage does not occur, the distal end side of the first tapered portion 3 of the self-sealing trap body 1, that is, the closed portion 2 is closed, so that odors and pests flow backward from the sewage side. Is prevented. For this reason, odors and pests do not enter from the sewage side to the indoor side.
When the drainage device is used and drainage flows into the drainage port of the drainage device, the drainage flows into the pipe connection portion 7 of the adapter member 5, the flat connection portion 9 inside the adapter member 5, the inlet 4 of the self-sealing trap body 1. The drainage is accumulated inside the self-sealing trap body 1, and when the drainage accumulates to some extent, the weight (water pressure) of the water causes the closed portion 2 of the self-sealing trap body 1 with elasticity to be pushed open from the inside. Drainage is discharged and drainage is performed (of course, during this drainage, the drainage is injured, and no odor or pests backflow occurs).
When use of the drainage equipment is finished and the drainage inside the self-sealing trap body 1 flows out sufficiently, the closed portion 2 of the self-sealing trap body 1 is again blocked by elasticity, and the backflow of odors and pests is prevented. Odors and pests do not enter the indoor side.
Since only one of the closed state and the drained state is generated, the intrusion of odors and pests from the sewage side to the indoor side is prevented, and the trap function effect by the self-sealing trap can be obtained.

In the above self-sealing trap, as shown in FIG. 1, the angle formed by the first taper portion 3 with respect to the central axis of the self-sealing trap body 1 when viewed from the opposite position of the short side is the same as that of the conventional self-sealing trap. The angle formed by the tapered portion T with respect to the central axis of the self-sealing trap body 1 is naturally the same as that of the self-sealing trap body 1. It is almost the same as the closed portion 2 of the self-sealing trap 1.
On the other hand, the angle formed by the second tapered portion 6 with respect to the central axis of the self-sealing trap body 1 is larger than the angle formed by the tapered portion T of the conventional self-sealing trap body 1 with respect to the central axis of the self-sealing trap body 1. Yes, when the taper portion advances inward in the horizontal direction by the same width, the second taper portion 6 may have a lower overall height than the tapered portion T of the conventional example. As a result, even if the inner diameter of the pipe connection portion 7 to which the drain pipe from the drain port is connected is the same, the angle formed by the second taper portion 6 with respect to the central axis of the self-sealing trap body is the same as that of the conventional tapered portion T. The height of the combined height of the adapter member 5 and the self-sealing trap body 1 of this embodiment is lower than the total height of the conventional self-sealing trap by an amount larger than the angle formed with respect to the central axis of the main body 1. be able to.
For this reason, it can be effectively used for a portion where the overall height of the drain trap is desired to be lowered, such as a pipe in a cabinet of a sink or a sink, or a low floor pipe in a bathroom.

  The embodiments of the present invention are as described above. However, the present invention is not limited to the above-described embodiments, and can be freely changed without departing from the scope of the present invention. For example, in the embodiment of the present invention, the adapter member 5 is provided with a taper, that is, an inclined surface portion as the second taper portion 6. However, the adapter member 5 of the present invention is not limited to the above-described embodiment. As shown in FIG. 5, the transition from the cylindrical portion to the flat portion may be handled by providing a flat portion constituted by a substantially flat surface. If comprised in this way, the dust etc. in waste_water | drain may accumulate on a flat part, However, Overall height can be made low only by not providing a taper part.

  In the above embodiment, the adapter member 5 is connected to the upstream end portion and the tubular member 8 is connected to the downstream end portion, respectively, in accordance with the drain pipe. Like the self-sealing trap provided in the drain of a waterproof pan for a washing machine, which is the drainage device for a washing machine shown in FIG. 6, the upstream is connected to the drain of the waterproof pan for the washing machine, and the downstream is a drain that receives drainage. The adapter member 5 and the cylindrical member 8 may be configured to be omitted by opening them.

It is sectional drawing seen from the opposing position of a short side of the Example of this invention. It is sectional drawing seen from the opposing position of a longitudinal side of the Example of this invention. It is the perspective view which abbreviate | omitted the cylindrical member of the Example of this invention. It is the perspective view which abbreviate | omitted the cylindrical member of the Example of this invention. It is sectional drawing which shows the other Example of this invention. It is sectional drawing of the Example which employ | adopted the self-sealing trap of this invention for the waterproof pan for washing machines. It is sectional drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Self-sealing trap main body 2 Blocking part 3 1st taper part 4 Inflow port 5 Adapter member 6 2nd taper part 7 Pipe connection part 8 Cylindrical member 9 Flat connection part 10 Attachment part 11 Mounted part 12 Downstream side pipe connection part T Taper part

Claims (3)

In self-sealing traps that treat wastewater from drainage equipment,
In the drainage pipe flow path,
It is made of a flexible material made into a substantially cylindrical shape,
One end of the cylindrical body on the side into which the drainage flows has a flat shape,
Provide a taper part in the middle part of the cylinder,
The cylinder is closed by the inner surfaces of the other ends of the cylinder coming into contact with each other,
While elastically deforming against the pressure of the fluid that tries to flow from the flat shape side of the cylindrical body to the closed side and opening the inside of the cylindrical body to pass the fluid,
A self-sealing trap comprising a closing portion 2 that maintains a closed state against the pressure of a fluid that flows from a closed side to a flat shape side and prevents passage of fluid. In the self-sealing trap of the drainage pipe,
At the end on the upstream side of the self-sealing trap that is flat,
Made of hard material,
The upstream end has a substantially circular shape in the axial direction,
The downstream side has a shape that fits in a watertight manner in accordance with the upstream end shape of the self-sealing trap,
The self-sealing trap according to claim 1, wherein the self-sealing trap is provided with an adapter member 5. In the self-sealing trap of the drainage pipe,
The upstream end of the adapter member 5 is
3. The self-sealing trap according to claim 2, wherein the self-sealing trap has a connection structure with a pipe body having an arbitrary standard size or standard shape.

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