JP2017203359A - Drainage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage system which has advantages of both a water seal part and a valve element part and which does not cause seal destruction by a difference between pipe air pressures of a drain pipe.SOLUTION: A drainage system comprises: an exhaust port 2 through which drain water flows into a drain pipe 3; the drain pipe 3 connected with the exhaust port 2 and for discharging drain water from the exhaust port 2 to a sewer pipe; a water seal part 4 which is arranged in a same line of the drain pipe 3 and which is provided internally with a water reservoir part 41, a lower limit wall 42 for constituting the wall for the lower limit of seal water, and an upper limit wall 43 for constituting the wall for the upper limit of seal water; and a valve element part 6 which is arranged in a same line of the drain pipe 3 and which always closes a pipe path and opens the pipe path when water is discharged. In the drainage system, an air pressure control room 5 for serving as air pressure when the valve element part 6 closes the pipe path is provided between the water seal part 4 and the valve element part 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drainage device for storing and draining water in a tank by opening and closing drainage ports such as bathtubs and washstands.

The drainage device of this conventional example is used for a wash bowl used for a washstand, and includes a tank body, a drain port, a drain pipe, and a water-sealed drain trap described below.
In the conventional example, the tank body is a wash bowl, and is composed of a box body that stores / drains fluid such as water.
A drain outlet is a hole opened on the bottom face of the tank body, and is an opening for discharging water inside the tank body to the outside of the tank body. In this conventional example, a drain pipe, which will be described later, is connected to the drain port, and the water in the tank is finally drained into the sewer pipe through the drain port and the drain pipe.
The drain pipe is a pipe connected to the drain outlet, and connects the drain outlet to the sewage pipe. In addition, the sewer pipe is provided with a water-sealed drain trap provided so as to store part of the drainage in the middle so that pests and off-flavors from the sewage do not flow back into the room.
The water-sealed drain trap has a tubular body bent in a substantially U shape and has a water seal inside, and an inlet, outlet, seal lower limit wall, seal upper limit wall, inlet leg, outlet leg, It is composed.
The sealed water part is configured so that a part of the drainage always stores water so that downstream pests and odors do not flow backward to the indoor side. Part of the drainage can be stored at all times. Moreover, the vertical distance from the lower end of the sealing water lower limit wall to the upper end of the sealing water upper limit wall is the sealing portion.
The inflow port is an entrance for allowing the drainage from the drainage port to flow into the sealed portion, and the drainage that flows in from the inflow port flows into an inflow leg to be described later.
The outlet is an outlet for draining the wastewater in the sealed portion to the outside of the sealed portion, and drainage from the outflow leg described later is drained outside the sealed portion, that is, outside the water-sealed drain trap. It is an outlet to do.
The sealing water lower limit wall is configured to hang down from the drain outlet and constitutes the lower limit of the sealing portion.
The sealed water upper limit wall is a wall that rises upward from the bottom of the sealed water portion, and constitutes the upper limit of the sealed water portion.
The inflow leg is a portion into which the drainage of the sealed water portion flows, and is a portion from the upper end of the sealed water to the lowermost end of the sealed lower limit wall.
The outflow leg is a portion from which the drainage of the sealed water portion flows out, and is a portion from the sealed water lower limit wall to the uppermost end of the sealed water upper limit wall.
Since the drain pipe is connected to the lower end of the outlet of the water-sealed drain trap, the drainage in the water-sealed drain trap is drained to the drain pipe.
The flow of drainage of the water-sealed drain trap is as follows. Waste water generated in the tank is discharged from the drain of the tank to the drain pipe and flows into the drain pipe. Drainage in the drain pipe flows into a water-sealed drain trap connected to the drain pipe. Drainage flows from the inlet of the water-sealed drain trap into the sealed portion of the water-sealed drain trap, passes through the inflow leg, and passes through the lower space of the seal water lower limit wall. Drainage that has passed below the lower seal wall flows into the outflow leg and reaches the upper end of the upper seal wall. The drainage that has reached the upper end of the sealed water ceiling wall passes through the space above the sealed water ceiling wall, is discharged from the sealed water part, drained from the outlet of the water-sealed drain trap to the drain pipe side, Drained outside of the drain trap. Drainage discharged from the water-sealed drain trap flows to the drain pipe and finally drains to the sewer pipe.
(See Patent Document 1)

The drainage device of this conventional example is used for a wash bowl used for a washstand, and includes a tank body, a drain port, a drain pipe, and a self-sealing drain trap described below.
In the conventional example, the tank body is a wash bowl, and is composed of a box body that stores / drains fluid such as water.
A drain outlet is a hole opened on the bottom face of the tank body, and is an opening for discharging water inside the tank body to the outside of the tank body. In this conventional example, a drain pipe, which will be described later, is connected to the drain port, and the water in the tank is finally drained into the sewer pipe through the drain port and the drain pipe.
The drain pipe is a pipe connected to the drain outlet, and connects the drain outlet to the sewage pipe. Moreover, the said sewer pipe is attached with the self-sealing drain trap with which a part of drainage is stored on the way and it is equipped so that the pest and a strange odor from a sewage may not flow back indoors.
Self-sealing drain traps are arranged in a series of drain pipes, and constitute an inflow port, an outflow port, a cylindrical body, and a water stop portion.
The inflow opening is an opening for allowing the waste water flowing from the drain pipe to flow into the self-sealing drain trap. It is comprised in the cylindrical body upper part mentioned later.
The cylindrical body is a substantially cylindrical cylindrical body made of a soft material such as elastomer or rubber, and has an inflow port upstream and a water stop portion downstream.
The water stop portion is continuously formed so that the downstream side of the cylindrical body is tapered toward the distal end direction, and the distal end faces and abuts so as to freely open / close. When the drainage flows from the cylindrical body, the waterstop portion opens due to the water pressure of the drainage, and when there is no drainage, the waterstop portion recovers due to the elasticity of the waterstop portion and the waterstop portions come into contact with each other. When the water stop part comes into contact, the inside of the drain pipe is blocked, so that odors and pests from the sewer pipe are prevented from flowing back into the room.
The outlet is an opening for discharging the waste water drained from the water stop portion from the inside of the self-sealing drain trap to the outside drain pipe, and is connected to the drain pipe.
The flow of drainage of the self-sealing drain trap is as follows. Waste water generated in the tank is discharged from the drain of the tank to the drain pipe and flows into the drain pipe. Drainage in the drainage pipe flows into a self-sealing drain trap connected to the drainage pipe. The drainage flows into the cylindrical body of the self-sealing drain trap from the inlet of the self-sealing drain trap, reaches the water stop section closed downstream of the cylindrical body, and the water stop pressure makes contact with the water stop section. It will be released and the water stop will open. When the water stop portion opens, the wastewater passes through the water stop portion and is discharged from the outlet to the outside of the self-sealing drain trap. The drainage drained from the self-sealing drain trap is drained to the drain pipe and finally to the sewer pipe.
(See Patent Document 2)

Utility Model 1-69870 JP 2010-126894 A

The conventional drainage device has the following problems.
Since the drainage device in Patent Document 1 employs a water-sealed drain trap, it is “50 mm or more” which is the prescribed dimension of the height of the sealed portion (hereinafter referred to as “sealed depth”) defined by the Building Standards Act. "Is required. When a sealed water depth of 50 mm is required, the place where the water-sealed drain trap is disposed becomes a storage space under the sink or sink. Accordingly, when a water-sealed drain trap having a sealing depth of 50 mm is disposed in this storage space, the storage space is increased in size.
Moreover, there is a sealing water loss as a problem of the water-sealed drain trap. The main causes of the reduction of the sealing water loss include induction siphon action, self-siphon action, evaporation, capillary action, etc. Among these, the induction siphon action is caused by fluctuations in air pressure in the drain pipe.
The induction siphon action is an action in which the sealed water in the sealed portion changes in response to fluctuations in the air pressure in the drain pipe caused by the flow of drainage, and the sealed water is lost. The problem to be solved by the present invention is to prevent breakage by the induction siphon.
Moreover, the state where the sealing surface of the sealing part becomes lower than the sealing lower limit wall in the sealing water loss is referred to as breaking. Since the water seal does not function in the sealed state, the odor and pests in the sewer pipe will flow back into the room. In addition, the description of “breaking” in the present invention refers to that caused by the induction siphon.
In addition, since the air pressure in the drainage pipe is likely to fluctuate due to various factors as described above, the water-sealed drainage trap easily causes breakage.

Further, the drainage device in Patent Document 2 employs a self-sealing drain trap.
The self-sealing drain trap is used in place of the above-described water-sealed drain trap. However, when the self-sealing drain trap is used, the self-sealing drain trap can seal the water stop portion by its own elasticity. There is no need to use a sealed drain trap, and when there is no drainage, the self-sealing drain trap is shut off and sealed by close contact with the water stop, but as mentioned above, because the air pressure fluctuation is severe in the drain pipe, The air pressure fluctuation in the drain pipe is also applied to the self-sealing drain trap.
When the air pressure in the drain pipe is excessively applied (positive pressure state), or when the air pressure in the drain pipe is excessively sucked (negative pressure state), the self-sealing drain trap itself is made of soft rubber or elastomer. Since it is composed of an elastic member, the water stop portion may be deformed and opened due to the positive / negative pressure in the pipe. If the water stop portion is deformed and opened as described above, the shape of the self-sealing drain trap in the normal arrangement state is restored. Only when the air pressure is pulled in as negative or positive pressure. As described above, once the water stop portion is opened, since it is in a sealed state during that time, odors and pests in the sewer pipe flow backward into the room.
In addition, the self-sealing drain trap may be deformed due to long-term use. This means that every time drainage occurs, the water stop will repeat the opening / closing for a long period of time, and the water stop will be deformed and will not contact or adhere well, but will stop and seal. There was a case where a gap was formed without being able to form (sealed state). If a gap occurs in the water stop portion in this way, there is a problem in that odors and pests from the sewage flow back to the indoor side.

From the above, the present invention solves the following problems.
1. A gap generated in the water stop portion of the valve body portion, such as a minute gap of the valve body portion generated in manufacturing the valve body portion or a gap of the water stop portion in aged use, is not generated.
2. Prevents the water seal from being broken.
3. Combines the advantages of both water seal and valve body.
4). Unlike the water-sealed drain trap, a sealing depth of 50 mm is not required in the sealing portion, and the space under the tank body can be widened. Moreover, the height of the piping space under the tank can be reduced.
5. No breakage occurs due to the difference in the air pressure in the drain pipe.

The drainage device according to claim 1 includes a drainage port 2 through which drainage flows into the drainage pipe 3 and a drainage pipe 3 connected to the drainage port 2 and draining the drainage from the drainage port 2 to the sewer pipe. A water reservoir 41 provided in the same system as the drainage pipe 3, a lower limit wall 42 constituting a lower limit wall of the sealed water, an upper limit wall 43 constituting an upper limit wall of the sealed water, and A drainage device comprising: a water seal portion 4 to be configured; and a valve body portion 6 that is disposed in the same system as the drainage pipe 3 and that always closes the pipe path and opens the pipe path when drainage occurs. In the drainage device, the valve body 6 is configured between the water seal portion 4 and the valve body portion 6 so as to form an air pressure adjusting chamber 5 having an air pressure for closing the pipe passage.

In the drainage device according to claim 2, the water reservoir portion 41 is configured such that a portion where drainage flows in is an inflow leg 44, and a portion where drainage flows out is an outflow leg 45. The drainage device according to paragraph 0008, wherein the leg cross-sectional area ratio is inflow leg 44: outflow leg 45 = approximately 1: 2.

The drainage device according to claim 3 is the drainage device according to paragraph 0008 or paragraph 0009, wherein in the drainage device, the water seal portion 4 is disposed upstream of the valve body portion 6.

The drainage device according to claim 4 is the drainage device according to paragraph 00081 or paragraph 0009, wherein the water sealing portion 4 is arranged downstream of the valve body portion 6 in the drainage device.

The drainage device according to claim 5 is the drainage device according to any one of paragraphs 0008 to 0011, wherein a sealing depth of the water sealing portion 4 is less than 50 mm.

The drainage device according to claim 6 is characterized in that the central axis of the valve body portion 6 is arranged so as to be substantially parallel to the central axis of the inflow leg 44 of the water sealing portion 4. It is a drainage device as described in any one.

The drainage device according to claim 7, wherein the central axis of the valve body portion 6 is disposed so as to be substantially orthogonal to the central axis of the inflow leg 44 of the water sealing portion 4. It is a drainage device as described in any one of these.

The drainage device according to claim 8 is configured such that the valve body portion 6 is formed on the upstream side so as to taper toward the downstream end from the cylindrical body 611 into which the drainage flows. The drainage device according to any one of paragraphs 0008 to 0014, characterized in that a self-sealing drain trap 61 constituting a water stop portion 612 formed as described above is provided.

The drainage device according to claim 9 is configured such that the water sealing portion 4 has an opening downstream from the outflow leg 45 as an outflow port 8 so that the central axes of the outflow port 8 and the inflow leg 44 are not coaxial. The top surface of the upper limit wall 43 is the upper end surface 431, and the length WL of the shortest distance between the surface of the lower limit wall 42 facing the upper limit wall 43 and the surface of the upper limit wall 43 facing the lower limit wall 42 is In any one of the paragraphs 0008 to 0015, the end cross section including the upper end surface 431 of the portion 4 is configured to be longer than at least the maximum thickness of the water seal portion 4 excluding the upper limit wall 43. The drainage device described.

The drainage device according to claim 10 is configured such that the water sealing portion 4 has an opening downstream from the outflow leg 45 as an outflow port 8, and the central axis of the outflow port 8 and the outflow leg 45 is coaxial. The top surface of the upper limit wall 43 is the upper end surface 431, and the length WL of the shortest distance between the inner surface of the lower limit wall 42 and the outer surface of the upper limit wall 43 is the end cross section including the upper end surface 431 of the water seal portion 4. The drainage device according to any one of paragraphs 0008 to 0015, wherein the drainage device is configured to be longer than the maximum thickness of the water sealing portion 4 excluding at least the upper limit wall 43.

The drainage device according to claim 11 is configured such that the water sealing portion 4 has an opening downstream from the outflow leg 45 as an outflow port 8 so that the central axes of the outflow port 8 and the inflow leg 44 are not coaxial. The top surface of the upper limit wall 43 is the upper end surface 431, and the upper limit wall of the portion that is the shortest distance from the end of the upper end surface 431 facing the lower limit wall 42 and the end of the upper end surface 431 facing the outlet 8 The paragraphs 0001 to 0001 characterized in that the wall thickness of 43 is configured to be longer than the maximum wall thickness of the water seal portion 4 excluding at least the upper limit wall 43 in the end cross section including the upper end surface 431 of the water seal portion 4. The drainage device according to any one of paragraphs 0016.

The drainage device according to claim 12 is configured such that the water sealing portion 4 has an opening downstream from the outflow leg 45 as an outflow port 8 and the central axis of the outflow port 8 and the outflow leg 45 is coaxial. The top surface of the upper limit wall 43 is the upper end surface 431, and the wall thickness of the upper limit wall 43 is the thickness of the water seal portion 4 excluding at least the upper limit wall 43 in the end cross section including the upper end surface 431 of the water seal portion 4. The drainage device according to any one of paragraphs 0008 to 0015 and paragraph 0017, wherein the drainage device is configured to be thicker than a maximum thickness of.

In the first aspect of the present invention, the pressure adjusting chamber 5 is configured between the water seal portion 4 and the valve body portion 6 so that the valve body portion 6 has an air pressure that closes the pipe path. Even if the air pressure in the pipe fluctuates, the air pressure in the air pressure adjusting chamber 5 can be changed to the air pressure that closes the valve body 6 by the air pressure adjusting chamber 5, so that the valve body 6 opens. Because there is no odor, odors and pests from sewage will not flow back into the room.
According to the second aspect of the present invention, the water reservoir 41 is configured such that the portion on the side where the drainage flows in is the inflow leg 44 and the portion on the side where the drainage flows out is the outflow leg 45. Since the leg cross-sectional area ratio is inflow leg 44: outflow leg 45 = about 1: 2, the air pressure applied to the leg cross-sectional area of the inflow leg 44 due to the negative pressure or the positive pressure in the air pressure adjusting chamber 5 and the outflow leg 45 When there is a difference in the air pressure applied to the leg cross-sectional area, the leg cross-sectional area of the outflow leg 45 is about twice the leg cross-sectional area of the inflow leg 44, so the water level of the inflow leg 44 is lower than the water level of the outflow leg 45. In addition, the stored water in the water reservoir 41 is not greatly impaired.
According to the third aspect of the present invention, since the water seal portion 4 is disposed upstream of the valve body portion 6, the air pressure in the atmospheric pressure adjusting chamber 5 becomes negative. Therefore, the water stop part 612 of the valve body part 6 can be satisfactorily adhered by the negative pressure in the air pressure adjusting chamber 5 on the upstream side, and water stop / sealing can be performed.
According to the fourth aspect of the present invention, since the water sealing part 4 is arranged downstream of the valve body part 6, the air pressure in the atmospheric pressure adjusting chamber 5 becomes a positive pressure. Therefore, the water stop part 612 of the valve body part 6 can adhere | attach well by the positive pressure in the downstream pressure regulation chamber 5, and it becomes possible to perform water stop and sealing.
According to the fifth aspect of the present invention, since the sealing depth of the water sealing part 4 is less than 50 mm, the size of the drainage device itself can be made more compact, and a larger storage space under the tank body 1 can be secured. I can do it. Moreover, since this drainage device is a drainage device that combines the valve body portion 6 and the water sealing portion 4, the sealing depth of the water sealing portion 4 can be less than 50 mm.
Since the center axis of the valve body portion 6 is arranged so as to be substantially parallel to the center axis of the inflow leg 44 of the water seal portion 4, the present invention according to claim 6 Since the installation direction can be changed, the piping layout can be freely set.
According to the seventh aspect of the present invention, since the central axis of the valve body portion 6 is arranged so as to be substantially orthogonal to the central axis of the inflow leg 44 of the water seal portion 4, depending on the structure and shape of the valve body portion 6. Since the installation direction can be changed, the piping layout can be freely set.
In the present invention described in claim 8, the valve body portion 6 is continuously formed so as to taper from the tubular body 61 formed on the upstream side into which the drainage flows, and from the tubular body 611 toward the downstream end. Since the self-sealing drain trap 61 that constitutes the water stop portion 612 formed in this manner, the air pressure in the air pressure adjusting chamber 5 is easily applied to the water stop portion 612 of the self-sealing drain trap 61, and is stronger. In addition, it is possible to improve the adhesion and water stoppage of the water stop portion 612.
The present invention according to claim 9 is configured such that the water sealing portion 4 is configured such that the opening downstream of the outflow leg 45 is the outflow port 8 so that the central axes of the outflow port 8 and the inflow leg 44 are not coaxial. The top surface of the wall 43 is the upper end surface 431, and the length of the shortest distance between the surface of the lower limit wall 42 facing the upper limit wall 43 and the surface of the upper limit wall 43 facing the lower limit wall 42 is the water sealing portion 4. Since the end cross section including the upper end surface 431 is longer than at least the maximum wall thickness MT of the water seal 4 excluding the upper limit wall 43, the length from the lower limit wall 42 to the upper limit wall 43 is secured longer. Therefore, the water seal 4 can be effectively prevented from being broken.
The present invention described in claim 10 is configured such that the water sealing portion 4 has an opening 8 downstream of the outflow leg 45 and the center axis of the outflow outlet 8 and the outflow leg 45 is coaxial. The top surface of the wall 43 is the upper end surface 431, and the length of the shortest distance between the inner surface of the lower limit wall 42 and the outer surface of the upper limit wall 43 is at least of the end cross section including the upper end surface 431 of the water seal portion 4. Since it is configured to be longer than the maximum thickness MT of the water seal portion 4 excluding the upper limit wall 43, the length from the lower limit wall 42 to the upper limit wall 43 can be secured longer. Can be effectively prevented.
The present invention according to claim 11 is configured such that the water sealing portion 4 has an opening downstream from the outflow leg 45 as an outflow port 8 so that the central axes of the outflow port 8 and the inflow leg 44 are not coaxial. The top surface of the upper limit wall 43 is the upper end surface 431, and the upper limit wall of the portion that is the shortest distance from the end of the upper end surface 431 facing the lower limit wall 42 and the end of the upper end surface 431 facing the outlet 8 Since the wall thickness of 43 is longer than the maximum wall thickness MT of the water seal portion 4 excluding at least the upper limit wall 43 in the end cross section including the upper end surface 431 of the water seal portion 4, Since a large end surface 431 can be secured, the water sealing part 4 can be effectively prevented from being broken.
It is.
The present invention according to claim 12 is configured such that the water sealing portion 4 has an opening downstream from the outflow leg 45 as an outflow port 8, and the central axis of the outflow port 8 and the outflow leg 45 is coaxial. The top surface of the upper limit wall 43 is the upper end surface 431, and the wall thickness MT of the water sealing portion 4 excluding at least the upper limit wall 43 in the end cross section including the upper end surface 431 of the water sealing portion 4. Since the upper end surface 431 of the upper limit wall 43 can be ensured to be large, the water sealing part 4 can be effectively prevented from being broken.

It is sectional drawing which shows 1st Example of this invention. It is A-A 'sectional drawing in FIG. It is an expanded sectional view which shows the state which the valve body part of 1st Example closed. The direction of the arrow indicates the direction of air pressure. It is sectional drawing which shows the state which the waste_water | drain passed and the valve body part opened in 1st Example. It is sectional drawing which shows 2nd Example of this invention. It is an expanded sectional view which shows the state which the valve body part of 2nd Example closed. The direction of the arrow indicates the direction of air pressure. It is sectional drawing which shows the Example arrange | positioned so that the center axis | shaft of a valve body part may become substantially orthogonal to the inflow leg of a water seal part. It is A-A 'sectional drawing in FIG. It is sectional drawing which shows the Example which employ | adopted the valve body part of the check valve structure. It is sectional drawing which shows the Example which employ | adopted the water seal part of S trap structure. It is A-A 'sectional drawing in FIG. It is sectional drawing which shows the Example which employ | adopted the water seal part of the reverse one-type trap structure. It is A-A 'sectional drawing in FIG. It is sectional drawing which shows the Example which employ | adopted the water seal part of the one-type trap structure. It is A-A 'sectional drawing in FIG.

The drainage device of the present embodiment is used in a wash bowl used for a washstand, and is shown in FIGS. 1 to 4 and described below, a tank body 1, a drain port 2, a drain pipe 3, and a water seal. The unit 4, the valve body unit 6, and the atmospheric pressure adjustment chamber 5 are configured.
The tank body 1 is a wash bowl in this embodiment, and is composed of a box body that stores / drains fluid such as water.
The drain port 2 is a hole that is opened in the bottom surface of the tank body 1 and is an opening that discharges water inside the tank body 1 to the outside of the tank body 1. In this embodiment, a drain pipe 3 to be described later is connected to the drain port 2, and the water in the tank body 1 is finally drained to the sewer pipe through the drain port 2 and the drain pipe 3.
The drain pipe 3 is a pipe connected to the drain port 2 and connects the drain port 2 to the sewer pipe. In addition, a drainage device including a water seal portion 4 and a valve body portion 6 provided to prevent the harmful insects and odors from the sewage from flowing backward to the indoor side is attached to the sewage pipe.

1 and 2 constitutes a primary inlet 71, a primary outlet 81, a lower limit wall 42, an upper limit wall 43, an inflow leg 44, an outflow leg 45, and a water reservoir 41. Yes. The central axis of the first outlet and the outflow leg 44 is configured not to be coaxial.
In all drawings, the hatched portion in the water reservoir 41 of the water seal 4 indicates a portion where water is stored.
The primary inflow port 71 is an entrance for allowing the drainage from the drainage port 2 to flow into the water seal portion 4, and the drainage that has flowed in from the primary inflow port 71 flows into an inflow leg 44 described later. To do. In the present embodiment, the pipe body is configured to hang down from the tank body 1 outlet 2.
The primary outlet 81 is an outlet for draining the drainage in the water seal part 4 to the outside of the water seal part 4, and drainage from the outflow leg 45 described later is outside the water reservoir 41, that is, a water seal. An outlet 8 for draining the outside of the part 4. In the present embodiment, it is a tubular body that is arranged downstream of an upper limit wall 43 described later and is suspended. Further, the atmospheric pressure adjusting chamber 5 is disposed downstream of the primary outlet 81, and the valve body 6 is disposed downstream thereof.
The lower limit wall 42 is a wall configured to hang down from the drain port 2 into the water seal portion 4, and constitutes the lower limit of the seal depth of the water reservoir portion 41 described later. Further, in the present embodiment, the lower limit wall 42 is configured by hanging the pipe body from the drain port 2 as it is, so that the lower limit wall 42 is configured by a cylindrical wall.
The upper limit wall 43 is a wall that rises upward from the bottom of the water reservoir 41 of the water seal 4 and constitutes the upper limit of the water reservoir 41 and the upper limit of the seal depth. Moreover, the upper end surface 431 is comprised in the top | upper surface of the upper limit wall 43, and the waste_water | drain in the water sealing part 4 passes the said upper end surface 431, and is discharged | emitted to the 1st outflow port side. The thickness of the shortest distance TL of the end portion of the upper end surface 431 facing the lower limit wall 42 and the shortest distance to the end portion of the upper end surface 431 facing the outlet 8 is shown in FIGS. 1 and 2. It is the distance of TL shown. And the distance of TL shown in the said FIG. 1 is the water sealing part except the upper limit wall 43 of the cut surface (AA 'sectional drawing of FIG. 1, ie, FIG. 2) containing the upper end surface 431 of the water sealing part 4. FIG. 4 is configured to be longer than the maximum wall thickness. By configuring in this way, the distance from the inner periphery of the upper limit wall 43 of the upper end surface 431 to the outlet 8 can be made longer than that of the conventional drainage device. Sealing can be prevented.
The shortest distance WL between the surface of the lower limit wall 42 facing the upper limit wall 43 and the surface of the upper limit wall 43 facing the lower limit wall 42 is the distance WL shown in FIGS. 1 and 2. The distance of WL shown in FIG. 1 and FIG. 2 is configured to be longer than the maximum thickness of the water seal portion 4 excluding the upper limit wall 43 at the cut surface including the upper end surface 431 of the water seal portion 4. By comprising in this way, the distance from the lower limit wall 42 to the upper limit wall 43 can be made longer than the conventional drainage apparatus, and by doing in this way, the sealing in the water reservoir 41 can be prevented. it can.
The inflow leg 44 is a portion into which the drainage of the water seal portion 4 flows, and in this embodiment, the inflow leg 44 is a tube on the drain outlet 2 (apparatus) side through which the drainage flows into the water seal portion 4. In this embodiment, as shown in FIG. 2, the ratio of the leg cross-sectional areas of the inflow leg 44 and the outflow leg 45 is approximately inflow leg 1: outflow leg 2. As the leg cross-sectional area of the outflow leg 45 is larger than the leg cross-sectional area of the inflow leg 44, the effect of preventing breakage is obtained.
The outflow leg 45 is a portion from which the drainage of the water seal portion 4 flows out, and is a portion from the lower limit wall 42 to the uppermost end of the upper limit wall 43.
In this embodiment, as shown in FIG. 2, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is approximately inflow leg 1: outflow leg 2.
The water reservoir 41 is provided with a sealed depth in order to maintain the atmospheric pressure of the atmospheric pressure adjusting chamber 5 disposed downstream by storing a part of the drainage at all times. The sealing water depth refers to a drainage part storing water from the lower end of the lower limit wall 42 to the upper end of the upper limit wall 43 or a vertical distance from the lower end of the lower limit wall 42 to the upper end of the upper limit wall 43. The drain pipe 3 is cut off from the atmosphere on the drain outlet 2 side by the sealing water depth. Further, as the water level in the water reservoir 41, the water level exists up to the upper end of the upper limit wall 43 on the outflow leg 45 side, and the water level on the inflow leg 44 side is basically lower than the upper end of the upper limit wall 43. The water level at the lowest end of the lower limit wall 42 is the maximum. This is because the water in the water reservoir 41 is drawn downstream by the negative pressure because the space in the pressure adjusting chamber 5 described later has a negative pressure.
In the present invention, as shown in FIG. 1, since the self-sealing drain trap 61 as the valve body 6 is formed downstream, the water sealing portion 4 functions as a so-called “water sealing drain trap”. It is not a thing, but is provided in order to keep the air pressure in the air pressure adjusting chamber 5 constant.
Moreover, since the said water sealing part 4 arrange | positions the below-mentioned valve body part 6 as a drain trap function as a drain trap function, even if the sealing water depth (sealing function part) is less than 50 mm, the inside of the drain pipe 3 is obstruct | occluded from atmospheric pressure. The purpose can be achieved. Therefore, since the sealing water depth can be set low, the height of the water sealing part 4 can be made low and the whole drainage apparatus can be made compact.

The valve body portion 6 is disposed downstream of the water seal portion 4. The valve body 6 always closes the pipe path, but when drainage occurs in the pipe path, the pipe path is opened and the drainage from the drain port 2 drains into the sewage, but the odor from the sewage It has a drain trap function to prevent backflow of insects and insects into the room.
In the present embodiment, as the valve body portion 6, a self-sealing drain trap 61 is used as shown in FIG. 3.
The self-sealing drain trap 61 as the valve body 6 includes a secondary inlet 72, a secondary outlet 82, a cylindrical body 611, and a water stop 612.
The central axis of the valve body portion 6 is disposed so as to be substantially parallel to the inflow leg 44 of the water seal portion 4.
The secondary inlet 72 is an opening for allowing drainage to flow into the self-sealing drain trap 61, and is disposed downstream of the primary outlet 81 of the water seal portion 4 via the atmospheric pressure adjustment chamber 5. The
The cylindrical body 611 is a cylindrical member that is made of a soft elastic member such as rubber or elastomer and that is open at the top connected to the secondary inlet 72.
The water-stop portion 612 is configured to taper continuously toward the downstream tip direction from the top of the cylinder, and the tip of the water-stop portion 612 is in watertight contact. When the drainage passes, the water stop portion 612 is opened by its own elasticity and can pass water downstream. When the drainage is completed, the water stop portion 612 is configured such that the tip comes into watertight contact with a restoring force due to its own elasticity.
The secondary outlet 82 is a passage for drainage generated when the water stop 612 is opened. The drainage pipe 3 is further connected downstream from the secondary outlet 82, and the wastewater generated from the secondary outlet 82 is drained into sewage.

The air pressure adjusting chamber 5 is a space disposed between the water sealing portion 4 and the self-sealing drain trap 61, and is configured to always have a negative pressure in this embodiment. Specifically, it is a sealed space that is downstream from the water surface of the outflow leg 45 and is divided to the inner peripheral surface of the cylindrical body 611 of the self-sealing drain trap 61 and the water stop portion 612.
Sealing of the space of the atmospheric pressure adjusting chamber 5 is achieved by sealing with the water reservoir 41 of the water seal 4 and the water stop 612 of the self-sealing drain trap 61 as the valve body 6.
Moreover, the negative pressure generating source in the atmospheric pressure adjusting chamber 5 is the atmospheric pressure adjusting chamber 5 by the air suction from the downstream side generated when drainage flows into the water sealing part 4 and flows into the downstream self-sealing drain trap 61 part. When the inside becomes negative pressure and drainage is completed, the water stop portion 612 of the self-sealing drain trap 61 is closed, and if the sealing depth of the water reservoir 41 of the water seal portion 4 is generated, the pressure adjustment chamber 5 remains at negative pressure. Maintained. At this time, as shown in FIG. 1, the water level in the water reservoir 41 flows in as much as the water level on the outflow leg 45 side is lifted by the negative pressure in the air pressure adjusting chamber 5 and the water level rises and the water level of the outflow leg 45 rises. The water level on the leg 44 side is lowered.
Further, due to the negative pressure in the atmospheric pressure adjusting chamber 5, the negative pressure is also applied to the upstream surface of the self-sealing drain trap 61 made of a soft elastic member disposed downstream, and the water stop portion of the self-sealing drain trap 61. 612 contact each other more firmly. Even if the restoring force of the water stop part 612 is weakened due to deterioration over time or the like and the close contact of the water stop part 612 is thin, the self-sealing drainage is caused by the negative pressure in the pressure adjustment chamber 5 as shown in FIG. The water stop portions 612 of the trap 61 can be in close contact with each other in the direction of the arrow in FIG.

The drainage flow of the drainage device is as follows. Waste water generated in the tank body 1 is discharged from the drain port 2 of the tank body 1 to the drain pipe 3 and flows into the drain pipe 3. Drainage in the drainage pipe 3 flows into a water seal 4 connected to the drainage pipe 3.
As shown in FIG. 4, the drainage flows into the water reservoir 41 of the water seal 4 from the primary inlet 71 of the water seal 4, passes through the inflow leg 44, and passes through the lower space of the lower limit wall 42. pass. The drainage that has passed under the lower limit wall 42 flows into the outflow leg 45 and reaches the upper end of the upper limit wall 43. The drainage that has reached the upper end of the upper limit wall 43 passes through the space on the upper end surface 431 that is the top surface of the upper limit wall 43, is discharged from the water reservoir 41, and is adjusted from the primary outlet 81 of the water seal 4. Water is passed into the chamber 5 and drained to the outside of the water seal 4.
Drainage that has flowed into the pressure control chamber 5 is drained to the secondary inlet 72. At this time, the pressure adjustment chamber 5 has a negative pressure due to the flow of the waste water.
The waste water drained into the secondary inlet 72 passes through the inner periphery of the cylindrical body 611 of the self-sealing drain trap 61 that is a valve body, reaches the tapered water stop 612, as shown in FIG. The water stop 612 is opened by water pressure. When the water stop portion 612 is opened, the drainage is drained from the secondary outlet 82 composed of the opened water stop portion 612 to the outside of the self-sealing drain trap 61. The waste water drained from the secondary outlet 82 passes through the drain pipe 3 and is finally drained to the sewer pipe.
In addition, the arrangement | positioning in the same system as the drainage pipe 3 points out the meaning of piping to the same drainage system.
Moreover, when the drainage from the drainage port 2 is finished, the overflowing water from the upper limit wall 43 in the water reservoir 41 is finished, and the water stop part 612 of the self-sealing drain trap 61 is closed. At this time, since the space in the atmospheric pressure adjustment chamber 5 is a negative pressure, it is favorably applied to the inner peripheral surface of the self-sealing drain trap 61 and the water stop portion 612. This is a pressure applied so that the self-sealing drain trap 61 itself is pulled up or sucked up to the pressure adjusting chamber 5 side as shown by the arrow direction in FIG. Therefore, the water stop part 612 of the self-sealing drain trap 61 can abut strongly without a gap. And the water stop part 612 of the self-sealing drain trap 61 part contacts, and at the same time, the water level of the water reservoir 41 of the water seal part 4 is also stabilized. 1, the water level on the outflow leg 45 side is located at the upper end of the upper limit wall 43, and the water level on the inflow leg 44 side is located at the lower end of the lower limit wall 42, as shown in FIG. That is, a water level difference occurs between the inflow leg 44 and the outflow leg 45 side. This occurs because the air pressure in the air pressure adjusting chamber 5 on the outflow leg 45 side is a negative pressure, and the air pressure applied to the inflow leg 44 side is the atmospheric pressure. Even if the water level difference occurs and the sealing depth is shallow, the water blocking portion 612 of the self-sealing drain trap 61 disposed downstream is tightly closed and closed, and therefore, the sealing may occur. There is no.
And since the water stop part 612 of the self-sealing drain trap 61 is in contact and in close contact, the inside of the drain pipe 3 can be closed, functioning as a drain trap, and draining is completed.
Further, the downstream side of the second outlet 82 of the self-sealing drain trap 61 is freed from negative pressure by the ventilation from the sewage side after drainage is completed, and only the internal space of the pressure control chamber 5 is upstream or downstream. In contrast, the pressure is negative.
Even if the induction siphon is generated in the drain pipe 3 downstream from the secondary outlet 82 and the air pressure in the pipe fluctuates, the water stop portion 612 is opened because the air pressure is kept constant in the air pressure adjusting chamber 5. There will be no breakage or water loss phenomenon that has occurred in water-sealed drain traps.

The drainage apparatus of the present embodiment is used in a wash bowl used for a washstand, and is shown in FIGS. 5 to 6 and described below, a tank body 1, a drain port 2, a drain pipe 3, and a valve body. The unit 6, the water sealing unit 4, and the atmospheric pressure adjustment chamber 5 are configured.
The tank body 1 is a wash bowl in this embodiment, and is composed of a box body that stores / drains fluid such as water.
The drain port 2 is a hole that is opened in the bottom surface of the tank body 1 and is an opening that discharges water inside the tank body 1 to the outside of the tank body 1. In this embodiment, a drain pipe 3 to be described later is connected to the drain port 2, and the water in the tank body 1 is finally drained to the sewer pipe through the drain port 2 and the drain pipe 3.
The drain pipe 3 is a pipe connected to the drain port 2 and connects the drain port 2 to the sewer pipe. Moreover, the drainage apparatus which consists of the water seal part 4 and the valve body part 6 with which the said sewer pipe is equipped so that the pest and strange odor from a sewage may not flow backward indoors is attached.

Since the valve body portion 6 is piped to the drain pipe 3 from the drain port 2, it is arranged downstream of the water seal portion 4. The valve body 6 always closes the pipe path, but when drainage occurs in the pipe path, the pipe path is opened and the drainage from the drain port 2 drains into the sewage, but the odor from the sewage It has a drain trap function to prevent backflow of insects and insects into the room.
In this embodiment, a self-sealing drain trap 61 is used as the valve body 6 as shown in FIGS.
Further, the central axis of the valve body portion 6 is disposed so as to be substantially parallel to the inflow leg 44 of the water seal portion 4.
The self-sealing drain trap 61 as the valve body 6 includes a primary inlet 71, a primary outlet 81, a tubular body 611, and a water stop 612.
The primary inflow port 71 is an opening for allowing drainage to flow into the self-sealing drain trap 61, and is disposed downstream of the drain pipe 3 that is suspended from the drain port 2.
The cylindrical body 611 is a cylindrical member that is composed of a soft elastic member such as rubber or elastomer and that is open at the top connected to the primary inlet 71.
The water-stop portion 612 is configured to taper continuously toward the downstream tip direction from the top of the cylinder, and the tip of the water-stop portion 612 is in watertight contact. When the drainage passes, the water stop portion 612 is opened by its own elasticity and can pass water downstream. When the drainage is completed, the water stop portion 612 is configured such that the tip comes into watertight contact with a restoring force due to its own elasticity.
The primary outlet 81 is a passage for drainage generated when the water stop 612 is opened. The drainage pipe 3 is further connected downstream from the primary outlet 81, and the wastewater generated from the primary outlet 81 is drained to the water seal 4 disposed further downstream of the drainage pipe 3. The Rukoto.

As shown in FIG. 5, the water sealing portion 4 includes a secondary inlet 72, a secondary outlet 82, a lower limit wall 42, an upper limit wall 43, an inflow leg 44, an outflow leg 45, and a water reservoir 41. Yes. Moreover, it is comprised so that the center axis | shaft of the secondary outflow port 82 and the inflow leg 44 may not become coaxial.
The secondary inlet 72 is an inlet for allowing drainage from the primary outlet 81 of the self-sealing drain trap 61 to flow into the water seal portion 4 via the atmospheric pressure adjustment chamber 5 described later. The wastewater that flows in from the secondary inlet 72 flows into an inflow leg 44 described later. In the present embodiment, the pipe body is configured by piping from the self-sealing drain trap 61.
The secondary outlet 82 is an outlet for draining the drainage in the water seal 4 to the outside of the water seal 4, and drainage from an outflow leg 45 described later is outside the water reservoir 41, that is, a water seal. An outlet 8 for draining the outside of the part 4. In the present embodiment, it is a tubular body that is arranged downstream of an upper limit wall 43 described later and is suspended. Further, the drain pipe 3 is connected to the secondary outlet 82, and the drain pipe 3 is finally drained into the sewer pipe.
The lower limit wall 42 is a wall configured to hang down from the secondary inlet 72 into the water seal portion 4, and constitutes a lower limit of the seal depth of the water reservoir portion 41 described later. Further, in the present embodiment, the lower limit wall 42 is configured by hanging the pipe body from the secondary inlet 72 as it is, so that the lower limit wall 42 is configured by a cylindrical wall.
The upper limit wall 43 is a wall that rises upward from the bottom of the water reservoir 41 of the water seal 4 and constitutes the upper limit of the water reservoir 41 and the upper limit of the seal depth. Moreover, the upper end surface 431 is comprised in the top | upper surface of the upper limit wall 43, and the waste_water | drain in the water seal part 4 passes the said upper end surface 431, and is discharged | emitted to the secondary outlet 82 side. .
The inflow leg 44 is a portion into which the drainage of the water seal portion 4 flows, and in this embodiment, the inflow leg 44 is a tube on the side of the secondary inlet 72 where the drainage flows into the water seal portion 4. In this embodiment, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is approximately inflow leg 1: outflow leg 2. It should be noted that the larger the leg cross-sectional area of the outflow leg 45 than the leg cross-sectional area of the inflow leg 44, the greater the effect of preventing breakage.
The outflow leg 45 is a portion from which the drainage of the water seal portion 4 flows out, and is a portion from the lower limit wall 42 to the uppermost end of the upper limit wall 43. In this embodiment, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is approximately inflow leg 1: outflow leg 2.
The water reservoir 41 is provided with a sealed depth in order to maintain the atmospheric pressure of the atmospheric pressure adjusting chamber 5 arranged upstream by storing a part of the drainage at all times. The sealing water depth refers to a drainage part storing water from the lower end of the lower limit wall 42 to the upper end of the upper limit wall 43 or a vertical distance from the lower end of the lower limit wall 42 to the upper end of the upper limit wall 43. The air on the downstream drainage pipe 3 side is blocked by the sealing depth. In addition, as the water level in the water reservoir 41, when drainage is completed and the upstream water stop 612 is closed, the air from the water stop 612 to the water level upper surface of the inflow leg 44 disappears in the water reservoir 41 and is blocked. Is done. At this time, the water level on the outflow leg 45 side is located at the upper end of the upper limit wall 43, but the force of the water in the water reservoir 41 returning to the inflow leg 44 side due to the atmospheric pressure applied to the water surface of the outflow leg 45. Acts to make the water level on the inflow leg 44 side equal to the water level on the outflow leg 45 side. However, since the air in the air pressure adjusting chamber 5 is sealed by the closing of the water stop portion 612 of the valve body portion 6 and there is no escape path, the air pressure adjusting chamber 5 is increased by the amount that the water level of the inflow leg 44 is pushed up. The air pressure inside becomes positive. Further, as shown in FIG. 5, the water level on the outflow leg 45 side is lowered by the amount pushed up to the inflow leg 44 side. Therefore, the water level on the outflow leg 45 side is higher than the water level on the inflow leg 44.
In the present invention, as shown in FIG. 5, since the self-sealing drain trap 61 as the valve body portion 6 is configured upstream, the water sealing portion 4 functions as a so-called “water sealing drain trap”. It is not a thing, but is provided in order to keep the air pressure in the air pressure adjusting chamber 5 constant.
Moreover, since the said water sealing part 4 arrange | positions the valve body part 6 as a drain trap function upstream, even if the sealing depth (sealed depth part) is less than 50 mm, the objective of obstruct | occluding from the drain pipe 3 of the sewer side can be achieved. Therefore, since the sealing water depth can be set low, the height of the water sealing part 4 can be made low and the whole drainage apparatus can be made compact.

The air pressure adjusting chamber 5 is a space disposed between the above-described self-sealing drain trap 61 and the water sealing portion 4 and is configured to always have a positive pressure in this embodiment. Specifically, it is a sealed space partitioned from the inner peripheral surface of the cylindrical body 611 of the self-sealing drain trap 61 and the water stop portion 612 to the water surface of the inflow leg 44.
Sealing of the space of the atmospheric pressure adjusting chamber 5 is achieved by sealing with a water stop portion 612 of a self-sealing water distribution trap as the valve body portion 6 and a water reservoir portion 41 of the water sealing portion 4.
Moreover, the positive pressure generation sources in the atmospheric pressure adjusting chamber 5 are as follows. As shown in FIG. 5, when drainage is completed and the upstream water stop 612 is closed, the air from the water stop 612 to the water level upper surface of the inflow leg 44 is blocked in the water reservoir 41 because there is no escape path. At this time, the water level on the outflow leg 45 side is located at the upper end of the upper limit wall 43, but the force of the water in the water reservoir 41 returning to the inflow leg 44 side due to the atmospheric pressure applied to the water surface of the outflow leg 45. Acts to make the water level on the inflow leg 44 side equal to the water level on the outflow leg 45 side. However, since the air in the air pressure adjusting chamber 5 is sealed by the closing of the water stop portion 612 of the valve body portion 6 and there is no escape path, the air pressure adjusting chamber 5 is increased by the amount that the water level of the inflow leg 44 is pushed up. The air pressure inside becomes positive. Further, the water level on the outflow leg 45 side is lowered by the amount pushed up to the inflow leg 44 side. Therefore, as shown in FIG. 5, the water level on the outflow leg 45 side is higher than the water level on the inflow leg 44. In this way, the atmospheric pressure in the atmospheric pressure adjustment chamber 5 becomes a positive pressure.
Further, due to the positive pressure in the atmospheric pressure adjusting chamber 5, the positive pressure is also well applied to the downstream surface of the self-sealing drain trap 61 made of a soft elastic member disposed upstream, and the water stopping portion of the self-sealing drain trap 61. 612 contact each other more firmly. Even if the restoring force of the water stop part 612 is weakened due to deterioration over time or the like and the close contact of the water stop part 612 is thin, self-sealing drainage due to the positive pressure in the pressure adjustment chamber 5 as shown in FIG. The water stop portions 612 of the trap 61 can be in close contact with each other.

The drainage flow of the drainage device is as follows. Waste water generated in the tank body 1 is discharged from the drain port 2 of the tank body 1 to the drain pipe 3 and flows into the drain pipe 3. Drainage in the drainage pipe 3 flows into the primary inlet 71 connected to the drainage pipe 3.
The drainage passes through the inner periphery of the cylindrical body 611 of the self-sealing drain trap 61 from the primary inlet 71 of the self-sealing drain trap 61 which is the valve body 6, reaches the tapered water stop 612, The water stop 612 is opened by water pressure. When the water stop portion 612 is opened, the drainage is drained from the primary outlet 81 composed of the opened water stop portion 612 to the outside of the self-sealing drain trap 61. Drainage drained from the primary outlet 81 flows into the pressure adjustment chamber 5.
The wastewater that has flowed into the pressure adjustment chamber 5 is drained into the secondary inlet 72, flows into the water reservoir 41 of the water seal 4 and passes through the inflow leg 44 to pass through the lower space of the lower limit wall 42. pass. The drainage that has passed under the lower limit wall 42 flows into the outflow leg 45 and reaches the upper end of the upper limit wall 43. The drainage that has reached the upper end of the upper limit wall 43 passes through the space on the upper end surface 431 that is the top surface of the upper limit wall 43, is discharged from the water reservoir 41, and is sealed from the secondary outlet 82 of the water seal 4. Drained to the outside of the section 4. The waste water drained from the secondary outlet 82 passes through the drain pipe 3 and is finally drained to the sewer pipe. In addition, the arrangement | positioning in the same system as the drainage pipe 3 points out the meaning of piping to the same drainage system.
Further, when drainage from the drainage port 2 is completed, first, the water stop portion 612 of the self-sealing drain trap 61 comes into contact. When the water stop portion 612 comes into contact, the inflow of air from the drain port 2 into the atmospheric pressure adjustment chamber 5 is blocked, and the water reservoir 41 of the water seal portion 4 disposed downstream of the atmospheric pressure adjustment chamber 5 also causes the downstream. Blocked. When the drainage is finished and the upstream water stop 612 is closed, the air from the water stop 612 to the water level upper surface of the inflow leg 44 is blocked in the water reservoir 41 because there is no escape path. At this time, the water level on the outflow leg 45 side is located at the upper end of the upper limit wall 43, but the force of the water in the water reservoir 41 returning to the inflow leg 44 side due to the atmospheric pressure applied to the water surface of the outflow leg 45. Acts to make the water level on the inflow leg 44 side equal to the water level on the outflow leg 45 side. However, since the air in the air pressure adjusting chamber 5 is sealed by the closing of the water stop portion 612 of the valve body portion 6 and there is no escape path, the air pressure adjusting chamber 5 is increased by the amount that the water level of the inflow leg 44 is pushed up. The air pressure inside becomes positive. Further, the water level on the outflow leg 45 side is lowered by the amount pushed up to the inflow leg 44 side. Therefore, the water level on the outflow leg 45 side is higher than the water level on the inflow leg 44 as shown in FIG. Then, the atmospheric pressure in the atmospheric pressure adjustment chamber 5 becomes a positive pressure. At this time, since the space in the pressure adjusting chamber 5 is positive, it is favorably applied to the outer peripheral surface (downstream surface) of the self-sealing drain trap 61 and the water stop portion 612. This is the pressure applied so that the self-sealing drain trap 61 itself is pushed up toward the drain port 2 as shown by the arrow direction in FIG. Therefore, the water stop part 612 of the self-sealing drain trap 61 part can abut strongly without a gap. And since the water stop part 612 of the self-sealing drain trap 61 is in contact and in close contact, the inside of the drain pipe 3 can be closed, functioning as a drain trap, and draining is completed.
Further, even if the induction siphon is generated in the drain pipe 3 downstream from the secondary outlet 82 and the air pressure in the pipe fluctuates, the air pressure in the water pressure adjustment chamber 5 is kept constant, so There is no occurrence of sealing water loss, and the phenomenon of breakage and sealing water loss that occurs in conventional water-sealed drain traps does not occur.

In addition to the above-described embodiments, the present invention can be modified as appropriate without departing from the scope of the claims.
As shown in FIGS. 7 and 8, in the drainage device in which the atmospheric pressure adjusting chamber 5 is disposed between the water seal portion 4 and the valve body portion 6, the central axis of the valve body portion 6 is set as the inflow leg of the water seal portion 4. You may arrange | position so that it may become substantially orthogonal to 44. Thus, the arrangement direction of the valve body 6 can be changed according to the shape and structure of the valve body 6 or can be changed as appropriate according to the piping layout.

As shown in FIG. 9, the valve body 6 having a structure other than the self-sealing drain trap 61 shown in the above embodiment may be used as the valve body 6. The structure of the valve body 6 at this time always closes the inside of the drain pipe path, but may be a valve structure that opens the path in the drain pipe 3 when drainage occurs.
In the other embodiment shown in FIG. 9, the central axis of the valve body portion 6 is arranged so as to be substantially orthogonal to the central axis of the inflow leg 44 of the water seal portion 4. Further, the valve body portion 6 is a so-called check valve structure in which a disc-shaped water-stop portion 612 is attached by a shaft having a hinge as a fulcrum, and the water-stop portion 612 rotates with the hinge as a fulcrum. The valve body portion 6 is employed. In this embodiment, an atmospheric pressure adjusting chamber 5 is arranged downstream of the valve body 6 and the atmospheric pressure adjusting chamber 5 is constantly adjusted to a positive pressure. It is pressed in the seating direction to the seat. By pressing with positive pressure, the water stop portion 612 can contact the valve seat without any gap, and water stop and contact can be completely achieved. Therefore, the inside of the drain pipe 3 can be closed constantly. In addition, when drainage occurs, the water stop portion 612 rotates with the hinge as a fulcrum by the water pressure of the drainage, opens the drainage pipe path, and drains the drainage downstream.
In the embodiment shown in FIG. 9, the valve body portion 6 is arranged upstream of the water sealing portion 4, but the valve body portion 6 may be arranged downstream of the water sealing portion 4. In this case, the inside of the atmospheric pressure adjusting chamber 5 has a negative pressure, and the water stop portion 612 of the valve body 6 disposed downstream from the atmospheric pressure adjusting chamber 5 is normally closed due to the negative pressure of the atmospheric pressure adjusting chamber 5. A pulling force (suction) is applied. Therefore, the water stop portion 612 can be lifted up by the negative pressure force, and can be brought into contact with the valve seat without any gap, and water stop and contact can be completely achieved. Therefore, the inside of the drain pipe 3 can be closed constantly. In addition, when drainage occurs, the water stop portion 612 rotates with the hinge as a fulcrum by the water pressure of the drainage, opens the drainage pipe path, and drains the drainage downstream.
When the hinge-type or rotary-type valve body 6 is used as a drain trap of the drain pipe 3 as described above, a separate weight, spring, or electric The valve body section 6 must be closed at all times using a magnet and a magnet, and the apparatus becomes large-scale, and the electric bill and periodic maintenance are necessary. However, in the present invention, electric control is also unnecessary. Regular maintenance is also unnecessary. Therefore, there is a cost merit that does not require an electricity bill. Furthermore, the apparatus is not large and has a space-saving and simple structure, which is very advantageous for the user.

As shown in FIGS. 10 and 11, the water sealing portion 4 having a structure other than the so-called partition trap shape shown in the above embodiment may be used. As the water sealing part 4 at this time, what is necessary is just a structure provided with the sealing water depth which has the sealing function by water sealing.
In another embodiment shown in FIG. 10, the water sealing portion 4 has a so-called S trap shape in which a tubular body is bent in a substantially U shape. In this embodiment, the valve body portion 6 is configured downstream of the water seal portion 4 via the S trap as the water seal portion 4 and the atmospheric pressure adjustment chamber 5 on the upstream side. The valve body 6 in this embodiment uses a self-sealing drain trap 61.
The water seal portion 4 in this embodiment forms the upper limit wall 43 and the lower limit wall 42 with the walls inside the tube body by bending the tube body into a U shape. Moreover, the upper end surface 431 is comprised in the top | upper surface of the upper limit wall 43, and the waste_water | drain in the water seal part 4 passes the said upper end surface 431, and is discharged | emitted to the 1st outflow port side. The thickness of the shortest distance TL of the end portion of the upper end surface 431 facing the lower limit wall 42 and the shortest distance from the end portion of the upper end surface 431 facing the outflow port 8 is shown in FIGS. TL distance indicated by 11. The distance TL shown in FIGS. 10 and 11 excludes the upper limit wall 43 of the cut surface (the AA ′ cross-sectional view of FIG. 10, that is, FIG. 11) including the upper end surface 431 of the water seal portion 4. It is longer than the maximum wall thickness of the water seal 4. By configuring in this way, the distance from the inner periphery of the upper limit wall 43 of the upper end surface 431 to the outlet 8 can be made longer than that of the conventional drainage device. Sealing can be prevented.
Further, the shortest distance WL between the surface of the lower limit wall 42 facing the upper limit wall 43 and the surface of the upper limit wall 43 facing the lower limit wall 42 is the distance of WL shown in FIGS. The distance of WL shown in FIGS. 10 and 11 is configured to be longer than the maximum thickness of the water seal portion 4 excluding the upper limit wall 43 at the cut surface including the upper end surface 431 of the water seal portion 4. By comprising in this way, the distance from the lower limit wall 42 to the upper limit wall 43 can be made longer than the conventional drainage apparatus, and by doing in this way, the sealing in the water reservoir 41 can be prevented. it can.
The inflow leg 44 is a portion into which the drainage of the water seal portion 4 flows, and in this embodiment, the inflow leg 44 is a tube on the drain outlet 2 (apparatus) side through which the drainage flows into the water seal portion 4. In this embodiment, as shown in FIG. 11, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is inflow leg 1: outflow leg 2. As the leg cross-sectional area of the outflow leg 45 is larger than the leg cross-sectional area of the inflow leg 44, the effect of preventing breakage is obtained.
The outflow leg 45 is a portion from which the drainage of the water seal portion 4 flows out, and is a portion from the lower limit wall 42 to the uppermost end of the upper limit wall 43.
In this embodiment, as shown in FIG. 11, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is inflow leg 1: outflow leg 2.
Thus, even in the S trap-shaped water sealing portion 4 in which the tubular body is bent, breakage can be effectively prevented.

As shown in FIGS. 12 and 13, the water seal portion 4 having a structure other than the so-called partition trap shape shown in the above embodiment may be used as the water seal portion 4. As the water sealing part 4 at this time, what is necessary is just a structure provided with the sealing water depth which has the sealing function by water sealing.
In the other embodiments shown in FIGS. 12 and 13, a so-called reverse one-trap shape using a cylindrical deodorizing pipe in which the water sealing portion 4 and the lower limit wall 42 can be detachably attached to the drain port 2 is used. It is said. In this embodiment, the valve body 6 is configured downstream of the water seal 4 via the reverse one-type drain trap as the water seal 4 on the upstream side and the atmospheric pressure adjustment chamber 5. The valve body 6 in this embodiment uses a self-sealing drain trap 61, and the center axis of the valve body 6 is substantially orthogonal to the center axis of the inflow leg 44 of the water seal section 4. Are arranged as follows. As described above, since the central axis of the self-sealing drain trap 61 is arranged in a substantially horizontal direction, the water stop 612 is provided at the lower end of the outlet 8 so that drainage that does not accumulate in the pipe on the drainage path is not generated. It is comprised so that.
The water sealing part 4 in this embodiment is a cylindrical deodorant pipe that can be detachably attached from the drain port 2 as a lower limit wall 42, and a partition wall that is configured upward from the lower end of the water reservoir 41 as an upper limit wall 43, A so-called reverse one-trap shape is formed in which the sealing depth is formed by the cooperation of the lower limit wall 42 and the upper limit wall 43. Moreover, the inflow leg 44 is eccentrically arranged from the center of the water seal 4 as shown in FIG. Moreover, it is comprised so that the center axis | shaft of the outflow port 8 and the inflow leg 44 may not become coaxial.
Moreover, the upper end surface 431 is comprised in the top | upper surface of the upper limit wall 43, and the waste_water | drain in the water seal part 4 passes the said upper end surface 431, and is discharged | emitted to the 1st outflow port side. The thickness of the shortest distance TL of the end portion of the upper end surface 431 facing the lower limit wall 42 and the shortest distance from the end portion of the upper end surface 431 to the end facing the outlet 8 is shown in FIGS. TL distance indicated by 13. And the distance of TL shown in the said FIG. 12, FIG. 13 remove | excluding the upper limit wall 43 of the cut surface (AA 'sectional drawing of FIG. 12, ie, FIG. 13) containing the upper end surface 431 of the water sealing part 4. As shown in FIG. It is longer than the maximum wall thickness of the water seal 4. By configuring in this way, the distance from the inner periphery of the upper limit wall 43 of the upper end surface 431 to the outlet 8 can be made longer than that of the conventional drainage device. Sealing can be prevented.
Further, the shortest distance WL between the surface of the lower limit wall 42 facing the upper limit wall 43 and the surface of the upper limit wall 43 facing the lower limit wall 42 is the distance WL shown in FIGS. The distance of WL shown in FIGS. 12 and 13 is configured to be longer than the maximum thickness of the water seal portion 4 excluding the upper limit wall 43 at the cut surface including the upper end surface 431 of the water seal portion 4. By comprising in this way, the distance from the lower limit wall 42 to the upper limit wall 43 can be made longer than the conventional drainage apparatus, and by doing in this way, the sealing in the water reservoir 41 can be prevented. it can.
The inflow leg 44 is a portion into which the drainage of the water seal portion 4 flows, and in this embodiment, the inflow leg 44 is a tube on the drain outlet 2 (apparatus) side through which the drainage flows into the water seal portion 4. In this embodiment, as shown in FIG. 13, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is approximately inflow leg 1: outflow leg 2. As the leg cross-sectional area of the outflow leg 45 is larger than the leg cross-sectional area of the inflow leg 44, the effect of preventing breakage is obtained.
The outflow leg 45 is a portion from which the drainage of the water seal portion 4 flows out, and is a portion from the lower limit wall 42 to the uppermost end of the upper limit wall 43.
In this embodiment, as shown in FIG. 13, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is approximately inflow leg 1: outflow leg 2.
In this way, the lower limit wall 42 is effectively prevented from being broken even in the so-called reverse one-type trap-shaped water seal portion 4 using a cylindrical deodorant pipe that can be detachably attached to the drain port 2. be able to.

As shown in FIGS. 14 and 15, the water sealing portion 4 having a structure other than the so-called partition trap shape shown in the above embodiment may be used. As the water sealing part 4 at this time, what is necessary is just a structure provided with the sealing water depth which has the sealing function by water sealing.
In other embodiments shown in FIGS. 14 and 15, the water sealing portion 4 is formed as a so-called one-type trap shape using a one-shaped deodorizing pipe that can be detachably attached to the lower limit wall 42 from the drain port 2. Yes. In this embodiment, a valve body 6 is configured downstream of the water seal 4 via a one-type drain trap as the water seal 4 on the upstream side and an atmospheric pressure adjustment chamber 5. The valve body 6 in this embodiment uses a self-sealing drain trap 61, and the central axis of the valve body 6 is substantially parallel to the central axis of the inflow leg 44 of the water sealing part 4. Are arranged as follows.
The water seal portion 4 in this embodiment is a partition wall that is configured to rise upward in a cylindrical shape from the lower end of the water reservoir 41 with a one-shaped deodorizing pipe that can be detachably attached from the drain port 2 as a lower limit wall 42. Is a so-called one-type trap shape in which the sealing depth is formed by the cooperation of the lower limit wall 42 and the upper limit wall 43. Moreover, it is comprised so that the central axis of the outflow port 8 and the outflow leg 45 may become coaxial and a concentric circle.
Moreover, the upper end surface 431 is comprised in the top | upper surface of the upper limit wall 43, and the waste_water | drain in the water sealing part 4 passes the said upper end surface 431, and is discharged | emitted to the 1st outflow port side.
Further, the shortest distance WL between the inner surface of the lower limit wall 42 and the inner surface of the upper limit wall 43 is the distance of WL in FIGS. Further, the distance WL shown in FIGS. 14 and 15 is the water excluding at least the upper limit wall of the cut surface (AA ′ cross-sectional view of FIG. 14, ie, FIG. 15) including the upper end surface 431 of the water seal portion 4. It is longer than the maximum thickness of the sealing part 4. By configuring in this way, the distance from the inner periphery of the upper limit wall 43 of the upper end surface 431 to the outlet 8 can be made longer than that of the conventional drainage device. Sealing can be prevented.
Further, the thickness of the upper limit wall 43, the WL distance shown in FIGS. 14 and 15, is a cut surface including the upper end surface 431 of the water seal 4 (AA ′ cross-sectional view of FIG. 14, ie, FIG. 15). It is comprised thicker than the maximum thickness of the water-sealed part 4 except at least the upper limit wall. By configuring in this way, the distance from the inner periphery of the upper limit wall 43 of the upper end surface 431 to the outlet 8 can be made longer than that of the conventional drainage device. Sealing can be prevented.
The inflow leg 44 is a portion into which the drainage of the water seal portion 4 flows, and in this embodiment, the inflow leg 44 is a pipe body on the drain outlet 2 (apparatus) side where the drainage flows into the water seal portion 4. In this embodiment, as shown in FIG. 15, the leg cross-sectional area ratio between the inflow leg 44 and the outflow leg 45 is approximately inflow leg 1: outflow leg 2. As the leg cross-sectional area of the outflow leg 45 is larger than the leg cross-sectional area of the inflow leg 44, the effect of preventing breakage is obtained.
The outflow leg 45 is a portion from which the drainage of the water seal portion 4 flows out, and is a portion from the lower limit wall 42 to the uppermost end of the upper limit wall 43.
Thus, even in the so-called one-type trap-shaped water seal portion 4 using the one-shaped deodorizing pipe that can be detachably attached to the lower limit wall 42 from the drain port 2, the breakage can be effectively prevented. Can do.

DESCRIPTION OF SYMBOLS 1 Tank body 2 Drain outlet 3 Drain pipe 4 Water seal part 41 Water reservoir part 42 Lower limit wall 43 Upper limit wall 431 Upper end surface 44 Inflow leg 45 Outflow leg 5 Pressure regulation chamber 6 Valve body part 61 Self-sealing drain trap 611 Cylindrical body 612 Stop Water section 71 Primary inlet 72 Secondary inlet 8 Outlet 81 Primary outlet 82 Secondary outlet WL Surface facing the upper limit wall of the lower limit wall and surface facing the lower limit wall of the upper limit wall The shortest distance TL between the end of the upper end surface facing the lower limit wall and the end of the upper end surface facing the outlet is the shortest distance

Claims (12)

Drain port 2 for drainage to flow into drain pipe 3,
A drain pipe 3 connected to the drain port 2 and draining the drainage from the drain port 2 to the sewer pipe;
It is arranged in the same system as the drain pipe 3 and constitutes a water reservoir 41 provided inside, a lower limit wall 42 constituting a lower limit wall of the sealed water, and an upper limit wall 43 constituting an upper limit wall of the sealed water. Water seal 4,
A valve body portion 6 that is disposed in the same system as the drainage pipe 3, always closes the pipe path, and opens the pipe path when drainage occurs;
In the drainage system composed of
A drainage device characterized in that an air pressure adjusting chamber 5 is formed between the water seal portion 4 and the valve body portion 6 so that the valve body portion 6 has an air pressure for closing the pipe passage. In the water reservoir 41, the portion on the side into which the wastewater flows is defined as the inflow leg 44, and the portion on the side from which the drainage flows out is defined as the outflow leg 45
The drainage device according to claim 1, wherein a ratio of a leg cross-sectional area between the inflow leg 44 and the outflow leg 45 is inflow leg 44: outflow leg 45 = about 1: 2. In the drainage device,
The drainage device according to claim 1 or 2, wherein the water sealing part (4) is arranged upstream of the valve body part (6). In the drainage device,
The drainage device according to claim 1 or 2, wherein the water sealing part (4) is arranged downstream of the valve body part (6). The drainage device according to any one of claims 1 to 4, wherein a sealing depth of the water sealing portion 4 is less than 50 mm. The drainage according to any one of claims 1 to 5, wherein the central axis of the valve body 6 is arranged so as to be substantially parallel to the central axis of the inflow leg 44 of the water sealing part 4. apparatus. The center axis of the valve body portion 6 is disposed so as to be substantially orthogonal to the center axis of the inflow leg 44 of the water seal portion 4. 6. Drainage equipment. A tubular body 611 formed upstream of the valve body 6 and into which drainage flows; a water stop 612 continuously formed so as to taper from the tubular body 611 toward the downstream end; The drainage device according to any one of claims 1 to 7, wherein a self-sealing drain trap 61 is configured. The water sealing portion 4 is configured so that the opening downstream of the outflow leg 45 is an outlet 8 and the central axis of the outlet 8 and the inflow leg 44 is not coaxial,
The top surface of the upper limit wall 43 is the upper end surface 431,
The length WL of the shortest distance between the surface of the lower limit wall 42 facing the upper limit wall 43 and the surface of the upper limit wall 43 facing the lower limit wall 42,
Any one of claims 1 to 8, wherein the end cross section including the upper end surface 431 of the water sealing part 4 is configured to be longer than the maximum thickness of the water sealing part 4 excluding at least the upper limit wall 43. The drainage device according to any one of the above. The water sealing portion 4 is configured such that the opening downstream of the outflow leg 45 is an outflow port 8, and the central axis of the outflow port 8 and the outflow leg 45 is coaxial,
The top surface of the upper limit wall 43 is the upper end surface 431,
The length WL of the shortest distance between the inner surface of the lower limit wall 42 and the outer surface of the upper limit wall 43 is
The first to eighth aspects, wherein the cross-section of the end portion including the upper end surface 431 of the water sealing portion 4 is longer than at least the maximum thickness of the water sealing portion 4 excluding the upper limit wall 43. The drainage device according to any one of the above. The water sealing portion 4 is configured so that the opening downstream of the outflow leg 45 is an outlet 8 and the central axis of the outlet 8 and the inflow leg 44 is not coaxial,
The top surface of the upper limit wall 43 is the upper end surface 431,
The wall thickness of the upper limit wall 43 at the shortest distance from the end portion of the upper end surface 431 facing the lower limit wall 42 and the end portion of the upper end surface 431 facing the outlet 8 is
Any one of claims 1 to 9, wherein an end section including the upper end surface 431 of the water seal portion 4 is configured to be longer than a maximum thickness of the water seal portion 4 excluding at least the upper limit wall 43. The drainage device according to any one of the above. The water sealing portion 4 is configured such that the opening downstream from the outflow leg 45 is an outlet 8 and the central axis of the outlet 8 and the outflow leg 45 is coaxial.
The top surface of the upper limit wall 43 is the upper end surface 431,
The wall thickness of the upper limit wall 43 is configured to be thicker than the maximum thickness of the wall thickness of the water seal portion 4 excluding at least the upper limit wall 43 in the end cross section including the upper end surface 431 of the water seal portion 4. The drainage device according to any one of claims 1 to 8 and claim 10.

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