JP2019199684A - Storage tank and drainage system - Google Patents

Abstract

To provide the storage tank capable of suppressing drainage from overflowing from a drain outlet member.SOLUTION: A storage tank 32 comprises: a connecting pipe 40 having an end part that is connected to an elbow 24, is opposite an elbow 24 side, and is located above a connection part to the elbow 24; a storage part 38 that is connected to the end part of the connecting pipe 40 and has a horizontal cross-sectional area of an internal space set larger than a pipe cross-sectional area when viewed in a cross section perpendicular to an axial direction of the connecting pipe 40; and a bag body 44 that is provided in the storage part 38 and allows air in the storage part 38 to escape to the outside of the storage part 38.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a storage tank provided in a drain pipe and capable of temporarily storing waste water, and a drainage system including the storage tank.

  A water outlet, for example, a kitchen sink, is provided with a drain outlet member (see, for example, Patent Document 1). In addition, in the siphon drainage system in which the drainage discharged from the drain port member is drained by the siphon drainage pipe, a non-gradient horizontal pulling pipe is used instead of the inclined pipe, and it is provided downstream of the horizontal pulling pipe. In addition, the drainage can be discharged quickly because the inside of the pipe is full and siphon force is generated. However, there is a time lag from the drainage flowing through the drainage port until the siphon force is generated. For this reason, various techniques for reducing the time lag have been proposed.

JP 2006-336321 A

  However, even if the time until the siphon force is generated after the drainage is passed through the drain port member, the so-called siphon start-up time is shortened, if a large amount of drainage is made to flow in the kitchen sink at once, the time until the siphon force is generated It could happen that the drainage overflowed from the drainage outlet member, and in some cases, the drainage collected in the kitchen sink, which did not look good.

  This invention considers the said fact and aims at provision of the storage tank which can suppress that drainage overflows from a drain outlet member, and a drainage system.

  The storage tank according to claim 1 is connected to a drain pipe, and a connection pipe whose end opposite to the drain pipe side is located above a connection part with the drain pipe, and is connected to the connection pipe. A storage section in which a horizontal cross-sectional area of the internal space is set larger than a cross-sectional area of the pipe line when viewed in a cross section perpendicular to the axial direction of the connection pipe, and the storage section. And pressure release means for releasing the air in the storage part to the outside of the storage part.

  For example, when drainage is drained from the drain outlet member of a kitchen sink or other drainage pipe to the drainpipe, the drainage flows to the downstream side of the drainpipe, but once a large amount of drainage is flushed to the drainage pipe, The drainage capacity of the drain pipe cannot catch up, and the drainage may overflow from the drain port member.

  When the connection pipe of the storage tank according to claim 1 is connected to the drain pipe on the downstream side of the drain port member, when a large amount of drainage flows once, the drained water flows to the downstream side of the drain pipe. , Part of it flows to the reservoir through the connecting pipe, so that compared with the case where there is no storage tank, drainage that has flowed into the drainage port member can be quickly discharged to the downstream side, and drainage from the drainage port member Overflow can be suppressed.

  Further, since the storage section is set to have a larger cross-sectional area in the horizontal direction of the internal space than the pipe cross-sectional area of the connection pipe, the storage section has a larger volume than the connection pipe. And a large amount of drainage can flow in.

  Note that when the drainage flows into the storage unit, the air in the storage unit is released outside the storage unit by the pressure release means, so that the drainage easily flows into the storage unit.

  Since the end of the connecting pipe opposite to the drain pipe is located above the connection with the drain pipe, the waste water that has flowed into the reservoir is then transferred to the drain pipe via the connecting pipe. Naturally falls toward the inside, and the inside of the storage part becomes empty. Thereby, when drainage is discharged | emitted from the drain port member next, drainage can be made to flow in in a storage part and it can suppress that drainage overflows from a drain port member.

  According to a second aspect of the present invention, in the storage tank according to the first aspect, the pressure release means has a bag body that expands and contracts by receiving the pressure of the air in the storage section.

  In the storage tank according to claim 2, when drainage flows into the storage unit, the bag body expands to suppress an increase in pressure in the storage unit, so that the drainage easily flows into the storage unit. In addition, if the waste_water | drain in a storage part is discharged | emitted, the expanded bag body will be shrunk | reduced.

  The drainage system according to claim 3 is provided with a watering device, a trap that is provided downstream of the watering device in the draining direction of the watering device, and in which sealed water is stored, and the connecting pipe is in a draining direction with respect to the trap. The storage tank according to claim 1 or 2 connected to the drain pipe on the upstream side.

  In the drainage system according to the third aspect, when the drainage is discharged from the watering device, the discharged drainage is discharged to the downstream side in the drainage direction of the trap through the trap.

  When a large amount of drainage is flowed once, the drained drainage flows to the downstream side of the drainage pipe and partly flows to the storage part via a connecting pipe connected to the drainage pipe upstream of the trap. Compared with the case where there is no storage tank, the drainage flowed to the drain port member can be quickly discharged, and the drainage can be prevented from overflowing from the drain port member.

  The invention according to claim 4 is a watering device, a trap that is provided downstream of the watering device in the direction of drainage in the drainage pipe and in which sealed water is stored, and the end portion of the connection pipe is formed of the trap. The storage tank according to claim 1 or 2 connected to the sealed water storage section.

  In the drainage system according to the fourth aspect, when the drainage is discharged from the watering device, the discharged drainage is discharged to the downstream side in the drainage direction of the trap through the trap.

  When a large amount of drainage flows once, the drained drainage flows to the downstream side of the drainage pipe, and a part of the drainage pipe enters the storage part of the storage tank through a connection pipe connected to the sealed water storage part of the trap. Since it flows, compared with the case where there is no storage tank, the waste_water | drain flowed to the drain outlet member can be flowed out rapidly, and it can suppress that drainage overflows from a drain outlet member.

As described above, according to the storage tank of the present invention, there is an excellent effect that the drainage can be prevented from overflowing from the drain port member.
Moreover, according to the drainage system of this invention, it has the outstanding effect that it can suppress that drainage overflows from a drain outlet member.

It is a schematic structure figure showing the drainage system concerning a 1st embodiment of the present invention. (A) is sectional drawing which shows a storage tank, (B) is a horizontal direction sectional drawing of a cover and a bag. It is a perspective view which shows the bag body used for the storage tank which concerns on 1st Embodiment. It is a side view of the elbow which made a part the cross section. (A) is a perspective view which shows an elbow and a storage member, (B) is sectional drawing (5B-5B sectional drawing of FIG. 5 (A)) of a connecting pipe. It is a side view which shows an S-shaped trap and an elbow. It is a schematic block diagram which shows the drainage system which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the storage tank which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows the storage tank which concerns on the 4th Embodiment of this invention.

[First Embodiment]
A drainage system 10 according to a first embodiment of the present invention will be described with reference to FIGS.
(Drainage system)
As shown in FIG. 1, in the drainage system 10 according to the present embodiment, a drainage joint 18 that connects piping from a watering device is provided in a drainage stack 16 that penetrates a through hole 14 of a floor slab 12 of a building. The drainage from the upper drainage stack 16 and the drainage from the watering device are merged. In FIG. 1, the configuration of the connecting portion of each pipe is omitted as appropriate.

  On each floor, a kitchen sink 20 is provided as an example of a watering device. The kitchen sink 20 is provided with a drain port member 22 through which drainage flows. The drain port member 22 includes a cylindrical portion 22A, a bottom portion 22B that covers a lower portion of the cylindrical portion 22A, and a tubular discharge portion 22C that is formed on a side portion on the bottom side of the cylindrical portion 22A. In addition, the opening part on the upper side of the cylindrical portion 22A is an inlet into which the drainage of the kitchen sink 20 flows.

  A water-sealed S-shaped trap 26 (see FIG. 6) as an example of a trap is connected to the discharge portion 22C of the drain port member 22 via an L-shaped elbow 24 as an example of a drain pipe. The elbow 24 has an end on the upstream side in the drain direction connected to the discharge portion 22C of the drain port member 22 using a cap nut 34, and an end on the downstream side in the drain direction using a cap nut 36. The S-shaped trap 26 is connected. The elbow 24 and the S-shaped trap 26 are part of the drain pipe.

  An L-shaped drain pipe 28 that extends from the S-shaped trap 26 toward the floor slab 12, bends laterally on the floor slab 12, and extends along the floor slab 12. Is connected.

  A siphon drain pipe 30 having a lateral pulling 30A extending in the horizontal direction and a vertical pipe 30B extending in the vertical direction is connected to the end of the L-shaped drain pipe 28 on the downstream side in the drain direction. The horizontal pulling pipe 30A is a pipe that allows the drainage from the L-shaped drainage pipe 28 to flow in the lateral direction. The soot pipe 30 </ b> B is a pipe that causes the drainage from the horizontal pulling pipe 30 </ b> A to flow downward, and is connected to the drainage stack 16 through the drainage joint 18.

  In the siphon drain pipe 30, siphon force is generated by flowing down the drain water flowing from the horizontal pull pipe 30 </ b> A to the dredger pipe 30 </ b> B. The siphoning force toward the discharge direction acts on the horizontal pulling tube 30A and the drainage on the upstream side of the horizontal pulling tube 30A by being pulled by the siphoning force generated in the soot tube 30B.

(Reservoir)
As shown in FIG. 2, a storage tank 32 is connected to the elbow 24. The storage tank 32 includes a storage member 42 in which the storage unit 38 and the connection pipe 40 are integrated, a bag body 44 as an example of a pressure release means connected to the storage unit 38, and a cover 46 that covers the bag body 44. I have.

  The bag body 44 communicates with the interior of the elbow 24 through the storage portion 38 and the connecting pipe 40, and is configured to receive pressure from the elbow 24 side from the lower inner side. As shown in FIGS. 2 and 3, the bag body 44 is formed of a cylindrical rubber member whose one end is closed.

  In the present embodiment, the case where the bag body 44 is made of rubber will be described as an example. However, the bag body 44 may be a member having deformable elasticity. As the material, resin or elastomer other than rubber can be used.

  The reservoir 38 is formed in a funnel shape having a larger diameter than the connecting pipe 40 as a whole. In other words, a cross-sectional area larger than the passage cross-sectional area of the connection pipe 40 inside the storage portion 38 (as viewed in a cross-section perpendicular to the longitudinal direction) inside the connection pipe 40 ( (Cross-sectional area when cut in the horizontal direction). Therefore, in this embodiment, the volume of the storage part 38 is larger than the volume of the connection pipe 40.

  A cylindrical attachment portion 48 is provided on the upper portion of the storage portion 38, and a tapered tapered surface 48 </ b> A is formed at an end surface corner portion of the attachment portion 48. A bag body 44 and a cover 46 are attached to the attachment portion 48. A mounting male screw portion 48 </ b> B is formed on the outer periphery of the mounting portion 48.

  The cover 46 includes a cylindrical cover body 46A and a top surface 46B that closes an upper portion of the cover body 46A. A large-diameter portion 46C is formed at the lower end portion of the cover main body 46A, and an attaching female screw portion 46D is formed on the inner peripheral surface of the large-diameter portion 46C. As a result, the large-diameter portion 46C of the cover main body 46A is rotated in accordance with the mounting portion 48 of the storage portion 38, whereby the mounting female screw portion 46D on the inner surface of the large-diameter portion 46C becomes the mounting male screw portion 48B of the mounting portion 48. And the cover 46 is configured to be attached to the storage portion 38. In this attached state, a facing surface 46E that faces the tapered surface 48A of the mounting portion 48 is formed on the inner surface of the large-diameter portion 46C of the cover 46.

  As shown in FIG. 2A, the top surface 46B is formed in a disc shape. On the top surface 46B, a plurality of arc-shaped vent holes 46F centering on the central portion are formed. Thereby, it is comprised so that the internal pressure change inside the cover 46 can be suppressed.

  A bag body 44 is accommodated in the cover 46. The base end portion of the bag body 44 is sandwiched between the tapered surface 48A and the facing surface 46E inside the cover 46, and is configured to be in close contact with the tapered surface 48A. Thereby, in the state which the inside of the bag body 44 and the inside of the storage part 38 connected, the watertightness with the exterior is ensured. The bag body 44 is maintained in a self-supporting state. The self-supporting state refers to a state in which the maximum height of the bag body 44 is maintained at normal pressure.

  As shown in FIG. 2B, the bag body 44 is formed in a shape extending outward from the center portion in plan view. The bag body 44 can be elastically expanded and contracted in the lateral direction (outside in the radial direction of the cover 46). When the bag body 44 receives positive pressure from the storage unit 38, the bag body 44 is elastically deformed in the lateral direction and swells to the storage unit 38. It is comprised so that the produced pressure can be relieved.

  As shown in FIG. 2A, the connecting pipe 40 of the storage member 42 is integrally connected to the vertical middle part of the vertical pipe part 24A of the elbow 24, and the storage part 38 side is the vertical pipe part of the elbow 24. It inclines so that it may be located above the connection part with 24A.

  As shown in FIGS. 5 (A) and 5 (B), the connecting pipe 40 has an oval radial cross section. As shown in FIG. 2 (A), the inclination angle θ in the axial direction L2 of the connecting tube 40 with respect to the axial direction L1 of the longitudinal tube portion 24A of the elbow 24 is, for example, 30 to 60 °, and more preferably 45 °. . The “oval” is an oval, an ellipse, an oval, or a closed curve similar to these, and a longitudinal direction 40L and a short direction 40S that are substantially orthogonal to each other exist in the radial cross section of the oval.

  As shown in FIG. 5B, the connecting pipe 40 is connected to the vertical pipe portion 24A of the elbow 24 in a state where the longitudinal direction 40L of the radial cross section is directed to the axial direction L1 of the vertical pipe portion 24A of the elbow 24. ing. In other words, the longitudinal direction 40L of the connecting pipe 40 is directed in the vertical direction of the drainage system 10, and the connecting pipe 40 is arranged vertically.

  The short side direction 40S of the radial cross section in the connecting pipe 40 is in a state facing the radial direction of the vertical pipe portion 24A of the elbow 24. The width D2 of the connecting tube 40 in the short direction 40S is smaller than the inner diameter D1 (see FIG. 2A) of the vertical tube portion 24A of the elbow 24. Due to the setting of the inner diameter, as shown in FIG. 4, the opening 54 of the connection tube 40 with respect to the vertical tube portion 24A of the elbow 24 is long and square in the axial direction L1 of the vertical tube portion 24A of the elbow 24. The shape has no part.

(Function)
The drainage system 10 according to the present embodiment is configured as described above, and the operation thereof will be described below.
When drainage is passed through the kitchen sink 20, the drained drainage flows into the siphon drain pipe 30 through the drain port member 22, elbow 24, S-shaped trap 26, and L-shaped drain pipe 28. In the siphon drain pipe 30, siphon force is generated by the drainage flowing into the dredger pipe 30 </ b> B downward, and the upstream drainage can be quickly flowed to the downstream side by the siphon force. It takes a certain amount of time for the siphon force to be generated after draining water.

  For this reason, in the conventional drainage system having the siphon drainage structure, the drainage capacity (the amount of drainage per unit time) is lower until the siphon force is generated than when the siphon force is generated. When a large amount of drainage was poured into the kitchen sink at once, the drainage capacity could not catch up and drainage overflowed from the drainage outlet member.

  In the drainage system 10 of the present embodiment, when a large amount of drainage is poured into the kitchen sink 20 at one time, the drained drainage is partly drainage port member 22, elbow 24, S-shaped trap 26, and L Since the other part flows into the siphon drain pipe 30 side via the character-shaped drain pipe 28 and the other part flows into the storage portion 38 of the storage tank 32 via the elbow 24 and the connection pipe 40, the discharge from the drain port member 22 Efficiency (discharge amount per unit time) can be increased as compared with the case where the storage tank 32 is not provided, and the drainage of the drainage port member 22 can be suppressed.

  When the drainage flows into the storage unit 38, the air in the storage unit 38 is pushed by the drainage and flows into the bag body 44, and the bag body 44 expands. Thereby, the pressure rise in the storage part 38 is suppressed and the waste water easily flows into the storage part 38.

  Then, when drainage falls to the dredge pipe 30B in a state where the drop portion between the horizontal pull pipe 30A and the dredge pipe 30B is filled with water, a siphon force is generated in the dredge pipe 30B. Then, the waste water on the upstream side of the siphon drain pipe 30 is sucked by the siphon force and is quickly and efficiently discharged to the downstream drain pipe 16. At the same time, the waste water flowing into the storage portion 38 of the storage tank 32 is also sucked and discharged to the elbow 24 side.

  In addition, since the connection pipe 40 of the storage tank 32 is inclined so that the elbow 24 side is on the lower side, the drainage that has flowed into the storage section 38 and the connection pipe 40 is caused by the natural fall. The inside of the storage tank 32 and the connection pipe 40 is finally emptied. Moreover, when the waste water in the storage part 38 is discharged | emitted, the expanded bag body 44 will reduce to an original shape.

  Thus, in the drainage system 10 of this embodiment, it is possible to suppress the drainage from overflowing from the drain port member 22 only by attaching the storage tank 32 to the conventional drainage system. In addition, the storage tank 32 is located below the drain port member 22 and on the drain port member 22 on the upstream side in the drain direction of the siphon drain pipe 30 in order to allow the drainage discharged from the drain port member 22 to flow in quickly. It is preferable to provide it at a close position. In this case, it is possible to store the storage tank 32 around the equipment around the water.

  In order to suppress drainage from overflowing from the drain port member 22 of the kitchen sink 20 in the general household drainage system 10, the total volume of the drain port member 22 and the storage unit 38 is set to 2500 ml. It is preferable to ensure about (ml) to about 3000 ml.

  Moreover, since the storage tank 32 of this embodiment has a shape in which the opening 54 of the connection pipe 40 of the storage tank 32 with respect to the vertical pipe part 24A of the elbow 24 does not have a square portion, the vertical pipe part of the elbow 24 The drainage flowing through 24A is prevented from repelling at the connecting portion between the connecting pipe 40 and the vertical pipe portion 24A of the elbow 24, and dust contained in the drainage is prevented from adhering to the connecting portion. For this reason, it is possible to suppress stagnation of drainage and wastewater at the connection part between the connection pipe 40 and the vertical pipe part 24 </ b> A of the elbow 24.

  Thereby, the storage part 38 connected to the connection pipe 40 can be normally functioned. Moreover, in the storage part 38, the stay of the waste refuse which flows in with the waste water which flows in can be suppressed. In particular, in the siphon drainage system, the drainage is relatively difficult to flow until the siphon force is exerted, and the wastewater and the like is likely to stay at the connection portion. Therefore, the storage tank 32 of this embodiment is suitable for the siphon drainage system. is there.

  In addition, since the storage tank 32 of the present embodiment is formed in a funnel shape in which the storage section 38 gradually decreases in diameter toward the lower side, even when foreign matter is mixed in the wastewater flowing into the storage section 38, The foreign matter is not easily caught on the wall surface of the storage portion 38, and the drainage can be smoothly discharged toward the connecting pipe 40.

[Second Embodiment]
A drainage system 10 according to a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment, and the description is abbreviate | omitted.
As shown in FIG. 7, in the drainage system 10 of the present embodiment, the storage tank 32 is connected to the S-shaped trap 26.

  In the storage tank 32 of the present embodiment, the lower end of the connecting pipe 40 is a sealed water storage portion bent into a U shape in which the sealed water of the S-shaped trap 26 (see FIG. 6, in which drainage W is collected) is stored. The U-shaped portion 26A (see FIG. 6) as an example is connected to the side portion on the lower end side.

  In the drainage system 10 of the present embodiment, when a large amount of drainage is poured into the kitchen sink 20 at one time, the drained drainage is partly drainage port member 22, elbow 24, S-shaped trap 26, and L Since the other part flows into the siphon drain pipe 30 side through the U-shaped drain pipe 28 and the other part flows into the storage portion 38 of the storage tank 32 through the S-shaped trap 26 and the connection pipe 40, the drain port member 22 The discharge efficiency can be increased as compared with the case where the storage tank 32 is not provided, and the drainage of the drainage port member 22 can be suppressed.

  In the storage tank 32 of the present embodiment, the lower end of the connection pipe 40 is connected to the side part on the lower end side of the U-shaped portion 26 </ b> A of the S-shaped trap 26, and part of the sealed water enters the connection pipe 40. Therefore, the drainage discharged from the drain port member 22 is easy to flow into the storage tank 32. Furthermore, it is more preferable that the upper surface of the storage tank 32 is below the bottom surface of the drain port member 22 because the drainage flows into the storage tank 32 before the drainage is accumulated in the drain port member 22.

  Furthermore, in the drainage system 10 of this embodiment, since the vertical distance from the drain port member 22 to the storage tank 32 can be increased, wastewater that should have accumulated in the drain port member 22 can be quickly stored in the storage tank 32. It is possible to accumulate.

[Third Embodiment]
A drainage system 10 according to a third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same structure as 1st Embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 8, in the storage tank 32 of the present embodiment, instead of the bag body 44 used in the storage tank 32 of the first embodiment, the pressure at which one end is closed and the peripheral part has a bellows shape. A bellows-like bag body 60 is used as an example of the opening means.

  The base end portion of the bellows-like bag body 60 has a flange shape, and is sandwiched between the end surface of the attachment portion 48 and the nut 62 screwed into the attachment external thread portion 48B of the attachment portion 48, and is in close contact with the end surface of the attachment portion 48. It is configured to be. The bellows-like bag body 60 is formed of a rubber member similarly to the bag body 44 of the first embodiment, but may be a member having a deformable elasticity, such as a resin or an elastomer other than rubber. Can be used.

  In the storage tank 32 of this embodiment, when drainage flows into the storage part 38, the bellows-like bag body 60 extends upward, and the pressure increase in the storage part 38 can be alleviated. Moreover, when drainage is discharged | emitted from the storage part 38, the bellows-like bag body 60 will shrink to an original state.

[Fourth Embodiment]
A drainage system 10 according to a fourth embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same structure as embodiment mentioned above, and the description is abbreviate | omitted.

  As shown in FIG. 9, the storage tank 32 of this embodiment is attached with a cup 64 having an open bottom instead of the bellows-like bag body 60 used in the third embodiment. The bottom 64A of the cup 64 is integrally provided with a cylindrical ventilation portion 64B protruding upward. A vent pipe 66 extending upward is connected to the vent 64B. The cup 64 and the ventilation pipe 66 correspond to the pressure release means of the present invention.

  In the storage tank 32 of the present embodiment, when drainage flows into the storage part 38, the air in the storage part 38 is discharged to the outside of the storage tank 32 via the ventilation part 64 </ b> B and the ventilation pipe 66. The pressure rise can be mitigated. Further, when the drainage is discharged from the storage unit 38, external air flows into the storage unit 38 through the ventilation pipe 66 and the ventilation unit 64B.

  It is necessary to determine the position of the upper end portion of the ventilation pipe 66 so that the waste water is not discharged from the upper end portion of the ventilation pipe 66 when a large amount of drainage flows into the drain port member 22 at one time. . For example, the upper end portion of the ventilation pipe 66 is preferably disposed above the upper opening of the drain port member 22.

[Other Embodiments]
As mentioned above, although an example of embodiment of this invention was demonstrated, embodiment of this invention is not limited to the above, In addition to the above, in a range which does not deviate from the main point, it can implement in various deformation | transformation. Of course there is.

  In the above embodiment, the storage tank 32 is provided integrally with the elbow 24 or the S-shaped trap 26, but the storage tank 32 may be formed separately from the elbow 24 or the S-shaped trap 26. Good. In this case, a screw portion, a cap nut, or the like for connecting to the elbow 24 or the S-shaped trap 26 can be provided at the end of the connection pipe 40 of the storage tank 32.

  In the above embodiment, the S-shaped trap 26 is provided on the downstream side of the drain port member 22 in the drain direction, but other types of traps other than the S-shaped trap 26 are provided on the downstream side of the drain port member 22 in the drain direction. May be.

  Although the drainage system 10 in this embodiment shall be a siphon drainage system, it is applicable also to the conventional drainage system by which the horizontal draw pipe was made into gradient piping.

  Further, in the drainage system 10 provided with the kitchen sink 20 in a general household, it is preferable to secure a total volume of about 2500 ml (milliliter) to 3000 ml of the volume of the drain port member 22 and the volume of the storage portion 38. This is not the case with other drainage systems.

  In addition, the watering device is not limited to a kitchen sink drain member, and may be a drain member such as a washstand or a bath.

DESCRIPTION OF SYMBOLS 10 ... Drainage system (siphon drainage system), 20 ... Kitchen sink (watering device), 24 ... Elbow (drainage pipe), 26 ... S-shaped trap (trap, drainage pipe), 26A ... U-shaped part (sealed water storage part) ), 32... Storage tank, 38... Storage section, 40 .. connection pipe, 44 .. bag body (pressure release means), 60 ... bellows-like bag body (pressure release means), 64 ... cup (pressure release means), 66. Ventilation piping (pressure release means)

Claims (4)

A connecting pipe connected to the drain pipe, the end opposite to the drain pipe side being located above the connecting section with the drain pipe,
A storage section that is connected to the connection pipe and has a large cross-sectional area in the horizontal direction of the internal space with respect to the pipe cross-sectional area when viewed in a cross section perpendicular to the axial direction of the connection pipe;
A pressure release means provided in the storage section, for releasing the air in the storage section to the outside of the storage section;
A storage tank having   The said pressure release means is a storage tank of Claim 1 which has a bag body which expands / contracts under the pressure of the air in the said storage part. Watering equipment,
A trap that is provided on the downstream side of the drainage pipe in the drainage direction in the drainage pipe and stores sealed water;
The storage tank according to claim 1 or 2, wherein the connection pipe is connected to the drain pipe upstream of the trap in the drain direction.
Having a drainage system. Watering equipment,
A trap that is provided on the downstream side of the drainage pipe in the drainage direction in the drainage pipe and stores sealed water;
The storage tank according to claim 1 or 2, wherein the end portion of the connection pipe is connected to a sealed water storage portion of the trap.
Having a drainage system.