JP2008138392A - Vent pipe for siphon drainage system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vent pipe for a siphon drainage system securing aeration in the vent pipe even if water enters the vent pipe. <P>SOLUTION: A horizontal vent pipe 32 is composed of a horizontal vent pipe body 33 and a water removing groove 35. The horizontal vent pipe body 33 is formed in a cylindrical shape forming the greater part of the horizontal vent pipe 32 and has a cutout formed along the longitudinal direction at a lower part. A vent passage 33A is formed inside the horizontal vent pipe body 33. The water removing groove 35 has a cross section shaped to project radially outward continuously with the cutout part of the vent pipe body 33, and a water removing groove 35A is formed inside the water removing groove 35 along the longitudinal direction of the horizontal vent pipe 32. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vent pipe for a siphon drainage system that is used in a siphon drainage system and has a ventilation function.

  In recent years, siphon drainage systems have been proposed in place of conventional gradient drainage systems. As described in Patent Document 1, the siphon drainage system is composed of a watering device and a siphon drainage pipe, and a siphon force (negative pressure) generated in a dredge pipe 3 that forms a hanging portion of the siphon drainage pipe 2. ) To improve drainage efficiency from watering devices.

And the siphon drainage system which arrange | positions a storage tank in a drainage system is further proposed in the siphon drainage system.
JP-A-6-42019

  As described above, when the storage tank is disposed, the pressure in the storage tank changes when water flows into and out of the storage tank. Therefore, as shown in FIG. A vent pipe 5 for supplying and exhausting the air inside is required. When water enters the vent pipe 5, even if it is drained, since it is piped with a small diameter and no gradient, water H remains in the vent pipe even after drainage as shown in FIG. 6, resulting in poor ventilation. Therefore, it is possible to take measures to prevent water from entering the vent pipe by providing a connection port for the vent pipe 5 near the top of the reservoir tank 4 or increasing the size of the reservoir tank 4.

  However, there may be a case where the position of the connection port of the ventilation pipe cannot be provided near the top or the size of the storage tank cannot be increased due to the design. Even if the above-mentioned measures are taken, depending on the amount of drainage or accidental clogging, water may enter the vent pipe.

  The present invention has been made in view of the above-described facts, and an object of the present invention is to provide a vent pipe for a siphon drainage system that can ensure ventilation in the vent pipe even when water enters the vent pipe. And

  A vent pipe for a siphon drainage system according to a first aspect of the present invention is a vent pipe for a siphon drainage system having a non-gradient portion disposed along a floor slab, wherein the vent pipe main body is ventilated. And a dewatering part that is provided in the non-gradient part and into which a fluid flows from the vent pipe main body.

  The vent pipe for the siphon drainage system of the present invention has a non-gradient part disposed along the floor slab. Here, the non-gradient portion does not need to be completely non-gradient (horizontal), and includes a case where there are some steps or gradients. However, when allowed in a siphon drainage pipe used in a siphon drainage system, the slope is substantially the same, and is smaller than that required in a conventional drainage system.

  Since the non-gradient part of the vent pipe for the siphon drainage system of the present invention is non-gradient, it is difficult to escape when water enters, causing a poor ventilation. Therefore, in the present invention, a water removal unit is provided through which a fluid flows from the vent tube main body that is ventilated. Even if water enters the vent pipe and water remains after drainage, the water flows out from the vent pipe main body to the water removal section. Therefore, ventilation in the vent pipe main body is ensured, and poor ventilation can be eliminated.

  The vent pipe for the siphon drainage system according to claim 2 is characterized in that the dewatering portion is configured by a groove provided along the longitudinal direction on the lower side of the vent pipe main body.

  By setting the water removal unit to the above-described configuration, the water that has flowed in can be collected in the groove and discharged using the capillary phenomenon.

  The vent pipe for the siphon drainage system according to claim 3, wherein the water removal portion is constituted by a concave portion provided at an interval along the longitudinal direction on the lower side of the vent pipe main body. And

  By setting the water removal portion to the above-described configuration, the water that has flowed in can be stored in the recess, and the ventilation portion of the ventilation pipe body can be secured.

  The vent pipe for the siphon drainage system according to claim 4 is used in a siphon drainage system provided with a storage tank between a watering device and a siphon drain pipe and communicated with the inside of the storage tank. To do.

  Thus, the vent pipe for the siphon drainage system of the present invention can be suitably used as a vent pipe communicating with the storage tank provided between the watering device and the siphon drain pipe.

  Note that the vent pipe here is a specific one in which two (plural) siphon drain pipes are connected in parallel to the storage tank, and the siphon drain pipe functions as a vent pipe (for example, upper and lower 2 of the siphon drainage pipes disposed in the top of the pipe.

  The vent pipe for the siphon drainage system according to claim 5 is a siphon drainage system provided with a plurality of siphon drain pipes connected to one watering device, and functions as a vent pipe among the plurality of siphon drain pipes. It is used for what has.

  In the siphon drainage system, a plurality of siphon drainage pipes may be arranged in parallel in order to cope with a large amount of reservoir flow. In this case, the specific siphon drain pipe also has a function as a vent pipe. Therefore, the vent pipe for the siphon drainage system of the present invention can be suitably used as such a siphon drain pipe.

  Since the present invention has a water removal part as described above, even if water enters the ventilation pipe and water remains after drainage, the water flows out from the ventilation pipe body to the water removal part, ensuring ventilation in the ventilation pipe body. can do.

  Below, an example of an embodiment concerning the present invention is described based on a drawing.

  First, the overall configuration of the siphon drainage system according to the present embodiment will be described. FIG. 1 is a schematic view showing the overall configuration of the siphon drainage system according to the present embodiment.

  The siphon drainage system 10 according to the present embodiment is a drainage system that efficiently drains drainage from a watering device using siphon force.

  In the present embodiment, the siphon drainage system 10 is used in an apartment house composed of a plurality of floors, and as shown in FIG. The drainage stack 12 extends in the vertical direction (longitudinal direction) of the apartment house, and penetrates the floor slab 14 on each floor of the apartment house.

  A plurality of watering devices 16 are provided in each door of each floor of the apartment house, and one end of a device drain pipe 18 through which drainage discharged from the watering device 16 flows is connected to the watering device 16. ing. The other end of the instrument drain pipe 18 is connected to the upper part of the storage tank 20. The storage tank 20 can store drainage from a plurality of watering devices 16, and the instrument drain pipe 18 is disposed with a gradient so that the storage tank 20 side is lowered.

  A siphon drain pipe 22 is connected to the storage tank 20. The siphon drain pipe 22 includes a horizontal pulling pipe 24 disposed along the floor slab 14, and a soot pipe 26 communicating with the horizontal pulling pipe 24. The horizontal pipe 24 communicates with the storage tank 20 and is disposed on the floor slab 14 with no gradient in the horizontal direction. The soot pipe 26 communicating with the horizontal pulling pipe 24 is disposed in the vertical direction (vertical direction) along the drainage stack 12. The soot pipe 26 is connected to the drainage stack 12 through a joint 28. The joint 28 joins the drainage from the trough pipe 26 to the drainage stack 12.

  The horizontal pulling pipe 24 and the dredging pipe 26 are constituted by a single drainage pipe, and the drainage is guided to the drainage stack 12 as it is without joining with other drainage pipes on the way. Further, the inner diameter of the horizontal pulling pipe 24 and the dredging pipe 26 is set so that the drainage flows in a full flow. A siphon force in the direction of drainage is applied to the drainage in the horizontal pipe 24 by the energy of the siphon head Hs.

  A vent pipe 30 is further connected to the storage tank 20. The vent pipe 30 includes a laterally ventilated pipe 32 disposed along the floor slab 14 and a saddle vent pipe 34 communicating with the laterally vented vent pipe 32. The laterally ventilating pipe 32 communicates with the storage tank 20 at a position higher than that of the laterally retracted pipe 24 and is guided downward so as to have no gradient in the horizontal direction along the floor slab 14 in the same manner as the siphon drain pipe 22. It is arranged. The trough vent pipe 34 communicating with the horizontal pulling vent pipe 32 is disposed in the vertical direction (vertical direction) along the drainage stack 12. The soot vent pipe 34 is connected to the drainage stack 12 via a joint 28. The joint 28 makes the storage tank 20 and the drainage stack 12 communicate with each other through the vent pipe 30.

  According to the siphon drainage system 10, the drainage discharged from the watering device 16 flows into the storage tank 20 and merges from the storage tank 20 to the drainage stack 12 through the horizontal pulling pipe 24 and the trough pipe 26. When drainage flows through the siphon drain pipe 22 at full flow, siphon force is generated by the potential energy of the siphon head Hs. By this siphon force, drainage in the horizontal pulling pipe 24 and the dredging pipe 26 is induced, and the drainage is promoted.

  Next, the laterally drawn vent pipe 32 of the vent pipe 30 of the present embodiment will be described in detail.

  As shown in FIG. 2, the laterally ventilated pipe 32 includes a laterally ventilated pipe body 33 and a water removal groove 35.

  The laterally ventilating pipe main body 33 has a cylindrical shape that constitutes the most part of the laterally ventilating pipe 32, and a notch along the longitudinal direction is formed in the lower part. An air passage 33 </ b> A is configured on the inner side of the horizontal pulling pipe main body 33.

  As shown in FIG. 2A, the water removal groove 35 has a shape that protrudes radially outward from the cutout portion of the vent pipe main body 33. A water removal groove 35 </ b> A is formed along the longitudinal direction of the drawing vent pipe 32.

  Next, an operation when drainage flows into the vent pipe 30 of the present embodiment will be described.

  When drainage flows into the vent pipe 30, it is also conceivable that the inside of the horizontal pull vent pipe 32 becomes full as shown in FIG. Since the vent pipe 30 is joined to the drainage stack 12 by the vertical vent pipe 34, it is considered that most of the drainage flows out, but the drainage remains in the laterally ventilated duct 32 that is made non-gradient. As shown in FIG. 3, the remaining waste water flows into the water removal groove 35 </ b> A from the air passage 33 </ b> A in the laterally drawn air pipe 32. Therefore, the air passage 33A is not closed by drainage, and air can be secured.

  The waste water that has flowed into the water removal groove 35A flows to the side of the air vent pipe 34 and is discharged due to a capillary phenomenon.

  According to the vent pipe 30 of the present embodiment, the water removal groove 35A is formed in the horizontal pulling pipe 32, so that the remaining drainage can be poured into the water removal groove 35A to ensure ventilation.

  In the present embodiment, an example in which the water removal groove 35A is configured has been described. However, instead of the water removal groove 35A, as shown in FIG. It may be configured. By configuring the recess 38 in this way, the residual drainage of the ventilation path 33A can be poured into the recess 38 to ensure ventilation. The drainage accumulated in the recess 38 evaporates with time.

  Further, in the present embodiment, an example in which the ventilation pipe 30 is provided with the soot ventilation pipe 34 arranged along the soot pipe 26 has been described, but the lateral ventilation vent pipe 32 is not necessarily provided, and the horizontal pulling ventilation pipe 32 is horizontally provided. It may extend in the direction and be connected to the drainage stack 12. That is, the present invention can be applied to any ventilation pipe having a portion (no gradient portion) arranged in the horizontal direction.

  Further, the vent pipe of the present invention is a siphon in which a plurality of siphon drain pipes 22 are connected to the storage tank 20, or a plurality of siphon drain pipes 22A are connected to one watering device 16A as shown in FIG. It can also be used for a specific siphon drain 22 of the drainage system.

  In this configuration, the drainage of all siphon drainage pipes 22 is not completed at the same time, but rather than a specific siphon drainage pipe 22, for example, a siphon discharge of what is arranged on the upper side is arranged on the lower side. End as soon as possible. And the siphon drainage pipe | tube 22 in which siphon drainage was complete | finished early functions after a siphon cut | disconnects, and functions as a vent pipe, and the pressure in a storage tank is kept constant. In this case, if drainage remains in the siphon drain pipe 22 that functions as a vent pipe, a ventilation failure occurs. Therefore, the vent pipe of the present invention can also be suitably used for a siphon drain pipe that can function as a vent pipe in such a siphon drain system.

  Moreover, although the siphon drainage system 10 which concerns on this embodiment demonstrated as what discharges | emits the waste_water | drain from a watering device efficiently, what is used in order to discharge | emit the wastewater from those other than the watering device 16, such as rain water, efficiently. Or a siphon drainage system used for cooling water in a factory.

  Moreover, although the siphon drainage system 10 which concerns on this embodiment was used for the apartment house, it may be used for a detached house.

It is the schematic which shows the whole structure of the siphon drainage system which concerns on this embodiment. (A) in the full flow state of the vent pipe of this embodiment is a figure which shows the cross section of a longitudinal direction (B). (A) of the state which the water which remained in the ventilation pipe of this embodiment flowed out to the water removal part is a figure which shows the cross section of a longitudinal direction (B). It is a figure which shows the modification of the vent pipe of this embodiment. It is the schematic which shows the whole siphon drainage system structure in which several siphon drainage pipes were connected to one watering device. It is a figure which shows the state from which the conventional ventilation pipe has become poor ventilation by drainage.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Siphon drainage system 22 Siphon drainage pipe 24 Horizontal pulling pipe 26 Fence pipe 30 Ventilation pipe 32 Horizontal pulling ventilation pipe 32
33 Aeration pipe body 33A Ventilation path 34 竪 Venting pipe 35 Water removal groove 35A Water removal groove 38 Recess

Claims (5)

A vent pipe for a siphon drainage system having a non-gradient portion disposed along a floor slab,
A vent pipe body for ventilation;
A dewatering part that is provided in the non-gradient part and into which a fluid flows from the vent pipe body;
Ventilation pipe for siphon drainage system equipped with.   2. The vent pipe for a siphon drainage system according to claim 1, wherein the dewatering section is configured by a groove provided along a longitudinal direction on the lower side of the vent pipe main body.   2. The vent pipe for a siphon drainage system according to claim 1, wherein the water removal section is configured by a recess provided at a distance along the longitudinal direction on the lower side of the vent pipe main body. 3. .   The siphon drainage system according to any one of claims 1 to 3, wherein the siphon drainage system includes a storage tank between a watering device and a siphon drain pipe, and is used in communication with the inside of the storage tank. Vent pipe.   The siphon drainage system comprising a plurality of siphon drainage pipes connected to one watering device, wherein the siphon drainage pipe has a function as a vent pipe among the plurality of siphon drainage pipes. A vent pipe for a siphon drainage system according to any one of the preceding claims.

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