JPH0571162A - Sewage basin with vacuum valve - Google Patents

Abstract

PURPOSE:To prevent a pipe from breakage and choking-up by forming a sewage basin with a vacuum valve of a sewage basin buried in the ground, a valve basin of receiving the vacuum valve and a breather pipe receiving chamber to provide a drain part in the bottom of a pipe receiving chamber. CONSTITUTION:Sewage W flows down through a sewage pipe 23 to a sewage basin 20 to be reserved therein. When the level of the sewage rises, air in a level detecting pipe 27 is compressed to open a vacuum valve 21 through the operation of a vacuum valve controller 25. Then, the sewage W is sucked form a suction pipe 24a by a difference between the atmospheric pressure in the sewage basin 20 and a vacuum sewage pipe 24b and transferred through the vacuum valve 21 to a vacuum pumping place. Next, when the level of the sewage W lowers, only air is sucked from a vent pipe communicated with the atmosphere to collide with solids in the sewage W and crush and transfer them to the vacuum pumping place. When rain water intrudes from a vent hole 37 provided in a cover body F provided in an opening K of a breather pipe receiving chamber 33, the rain water gathers in a drain section H to drain into the ground through a filter member 34 and crushed stone 35....

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage tank with a vacuum valve used in a vacuum sewer system.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Laid-Open No. 132782/1990, there is a vacuum type sewer system in which a sewage system with a vacuum valve is installed underground and the sewage is forcibly conveyed in a vacuum.

On the other hand, as shown in FIG. 5, a sewage pipe with a vacuum valve used in such a vacuum type sewer system has a sewage pipe 1, in which sewage from a house (not shown) is buried underground. 1 is provided with a sewage basin 2 that naturally flows down to temporarily store sewage, and a valve sac 5 that accommodates a vacuum valve 4 that opens and closes to forcibly convey the sewage in the sewage basin 2 by vacuum. There is something.

The valve basin 5 is isolated from the surroundings by a side wall 6 and is separated from the dirty water basin 2 by a bottom wall 7. In addition, the opening Y provided flush with the ground Z
A lid 8 is provided on the lid so as to be openable and closable.

On the upstream side of the vacuum valve 4, a suction pipe 3a penetrating through the bottom wall 7 and projecting in the wastewater tank 2, and on the downstream side of the vacuum valve 4 a vacuum wastewater pipe communicating with a vacuum sewer pipe 9. 3b are connected via a vacuum valve 4.

A vacuum valve controller 10 is attached to the vacuum valve 4, and the vacuum valve controller 10 is connected to the communication pipe 1.
1 communicates with the water level detection pipe 12 provided in the dirty water tank 2. Further, the vacuum valve controller 10 is connected by a communication pipe 13 to a breather pipe 15 having an intake port 14 projecting from the ground. The vacuum valve 4 is well known, and is disclosed in, for example, WO90 / 503128.

In the sewage tank with a vacuum valve constructed in this manner, sewage from a house or the like is temporarily stored in the sewage tank 2 through the sewage pipes 1 and 1, and the sewage tank 2 is When the water level detection pipe 12 detects that the sewage has been stored up to a predetermined amount, the vacuum valve controller 10 operates to open the vacuum valve 4 to suck the sewage stored in the sewage tank 2 through the suction pipe 3a and to vacuum the sewage. It is forcibly transported to the vacuum pump station (not shown) through the vacuum sewer pipe 9 through the dirty water pipe 3b.

[0008]

By the way, in the sewage with vacuum valve constructed as described above, the breather pipe 15 is projected from the ground Z to the ground, and the intake port portion 14 is located on the ground. With this structure, the intake port 14 may be damaged by a vehicle, a pedestrian, or the like, and an appropriate atmospheric pressure may not be supplied to the vacuum valve 4, and as a result, the vacuum valve 4 may not operate normally. , There was a problem that it spoiled the aesthetics of the installation location.

The present invention has been made in view of the above situation, and by eliminating the need to provide a breather pipe on the ground, it is possible to prevent breakage and blockage of the breather pipe and to improve the aesthetic appearance of the installation location. The purpose of the present invention is to provide a sewage tank with a vacuum valve.

[0010]

[Means for Solving the Problems] In order to achieve the object, the present invention provides a sewage system that is buried underground and temporarily stores sewage. A valve that stores a vacuum valve that opens and closes for forcibly transporting, and a breather pipe storage room that communicates with the atmosphere that stores the breather pipe that supplies outside air to the vacuum valve controller that controls the opening and closing of the vacuum valve The gist of the present invention is that the bottom of the breather pipe storage chamber is provided with a drainage unit for discharging the water that has entered the breather pipe storage chamber into the soil.

[0011]

In this structure, the breather pipe for guiding the atmospheric pressure of the outside air to the vacuum valve controller is housed in the breather pipe storage chamber. As a result, the breather pipe does not project above the ground, so that the breather pipe can be prevented from being damaged or blocked, and the aesthetic appearance of the installation location is not spoiled.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the dirty water tank with vacuum valve of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a vertical sectional view of a dirty water tank with a vacuum valve according to a first embodiment of the present invention, and FIG. 2 is an enlarged plan view of a filter member.

In FIG. 1, a wastewater mist 20 for temporarily storing wastewater from a house (not shown) and a wastewater masu 20.
A valve sill 22 in which a vacuum valve 21 for sucking and draining the stored waste water W in a vacuum is housed is buried underground.

The sewage basin 20 has the other ends 23a of the sewage pipes 23, 23, one end of which is connected to a house or the like (not shown), and is set so that the sewage from the house or the like flows down naturally. There is.

The vacuum valve 21 has a suction pipe 24a provided on the upstream side thereof so as to project into the wastewater tank 20, and a vacuum wastewater pipe 2 connected to the suction pipe 24a connected to a vacuum pump station on the downstream side thereof.
4b is normally cut off.

A vacuum valve controller 25 for controlling opening / closing is attached to the vacuum valve 21.
Is connected by a communication pipe 26 to a water level detection pipe 27 provided in the wastewater tank 20. Further, the vacuum valve controller 25 is connected to a breather pipe 29 for supplying outside air by a communication pipe 28. The breather pipe 29 is housed in a breather pipe storage chamber 33 having a substantially cylindrical shape which is buried underground adjacent to the valve stem 22.

The valve stem 22 is shielded by a side wall 30 and a bottom wall 31. Further, a lid 32 is provided at the opening J of the valve stem 22 so as to be openable and closable.

At the bottom of the breather tube storage chamber 33, there is a drainage section H for draining the water that has entered the breather tube storage chamber into the soil.
The drainage section H is provided with a recess B formed in the bottom and having a communication hole R communicating with the soil, and a filter member 34 provided in the recess B. Crushed stones 35, 35 as a permeation layer are laid under the filter member 34. In addition, as shown in FIG. 2, the filter member 34 has a disk shape, and has a plurality of holes 36 radially.
36 ... are provided. Further, at the opening K of the breather tube storage chamber 33, a lid F having a plurality of vent holes 37 for ventilating the ground is provided so as to be opened and closed.

At the tip of the breather pipe 29, an intake port 38 located inside the breather pipe storage chamber 33 is attached.

In the above structure, the sewage W of a house is
The water level of the wastewater W in the wastewater mist 20 gradually rises by being flown into the wastewater masu 20 and stored therein through the wastewater pipes 23. As the water level rises, the water level in the water level detection pipe 27 rises and the air existing in the water level detection pipe 27 is compressed. When the compressed value of this air exceeds a predetermined value, the vacuum valve passes through the communication pipe 26. This is transmitted to the controller 25, and the vacuum valve controller 25 operates to open the vacuum valve 21.

On the other hand, the atmospheric pressure inside the sewage tank 20 is set to be equal to the atmospheric pressure on the ground, and the atmospheric pressure inside the vacuum sewage pipe 24b is kept constant (generally by a vacuum pump (not shown) in communication with the vacuum sewer pipe P). Approximately 380 to 635 mmHg), the differential pressure between these causes the wastewater W stored in the wastewater tank 20 to be sucked from the suction pipe 24a, pass through the vacuum valve 21 in the open state, and be vacuumed. It is conveyed to the vacuum pumping station through the dirty water pipe 24b and the vacuum sewer pipe P.

As a result of the sewage W being sucked by the vacuum valve 21, the water level of the sewage W in the sewage tank 20 is lowered, and when the water surface is located below the lower end of the suction pipe 24a, the sewage pipe 2
Only air is sucked from a vent pipe (not shown) which is provided in the middle of 3, 23 and communicates with the atmosphere, and this sucked air collides with the solid matter in the wastewater during suction and crushes the solid matter.

The sewage and air thus sucked are conveyed to the vacuum pumping station. A differential circuit (not shown) is provided in the vacuum valve controller 25 so that the vacuum valve 21 is closed by sucking a predetermined amount of dirty water after sucking a predetermined amount of dirty water.

In addition, the rainwater from the plurality of ventilation holes 37 that ventilates the rainwater due to the rain from the ground formed in the lid F provided in the opening K of the breather tube accommodation chamber 33.
Even if it infiltrates into the inside 3, the rainwater gathers in the drainage part H, passes through the holes 36, 36 ...
It is quickly drained into the ground through 5 ...

With this structure, the breather pipe 29 and its intake port 38 are not projected above the ground, so that the breather pipe is not damaged or blocked by a vehicle on the ground, a pedestrian, or the like. Can be prevented. In addition, the rainwater that has entered the breather tube storage chamber 33 does not collect in the breather tube storage chamber 33 and enter the vacuum valve controller 25 through the intake port 38 to prevent normal operation of the vacuum valve 21.

By the way, in the above embodiment, the structure of the sewage masu with a vacuum valve of the type in which the valve mast 22 is provided above the sewage masu 20 is disclosed, but as shown in FIG.
It can also be applied to a structure in which 0 and valve stem 22 are adjacent to each other. In FIG. 3, components having the same configurations and functions as those of the above-described embodiment are designated by the same reference numerals as those in FIG. 1 and their description is omitted.

Further, in FIG. 3, the breather pipe storage chamber 33 is installed between the sewage sump 20 and the valve stem 22, but the installation place of the breather pipe storage chamber 33 is not limited to this. Further, as shown in FIG. 3, by providing a communication hole in the bottom wall 31 of the valve stem 22 and installing a drainage portion h, rainwater that enters the valve stem 22 can be efficiently drained.

(Second Embodiment) FIG. 4 shows a second embodiment of the present invention and is an enlarged vertical sectional view of a drainage portion provided at the bottom of the breather tube storage chamber.

As shown in FIG. 4, the breather tube storage chamber 4
At the bottom of 0, a recess 42 is formed by bending the peripheral wall 41 of the breather tube storage chamber 40 inward in the horizontal direction.

A drain hole 43 is formed at the bottom of the recess 42. The drain hole 43 has a plurality of communication holes 44, 44.
The lid 45 having the ... Is formed is installed. Below the lid 45, for example, a rainwater pump 46 having a substantially columnar shape is installed.

A water permeable pipe 47 is connected to the bottom wall of the rainwater pump 46 in a penetrating state. A basket net type filter member f is attached to the upper portion of the water permeable pipe 47.
A water-permeable bottom plate T is attached to the bottom of the. Further, a plurality of through holes 48, 48 ... Are provided in the peripheral wall portion of the water permeable pipe 47.
Is formed and is surrounded by crushed stone 49 as a permeation layer.

Even with such a structure, the same effect as that of the first embodiment can be obtained.

[0034]

[Effects of the Invention] As described above, in the case of the sewage system with a vacuum valve of the present invention, when the sewage system is buried underground and temporarily stores the sewage system, the sewage system is buried underground and is A valve that contains a vacuum valve that opens and closes in order to forcibly transport the sewage in a vacuum is connected to the atmosphere that stores the breather pipe underground that supplies the outside air to the vacuum valve controller that controls the opening and closing of the vacuum valve. By providing the breather tube storage chamber described above, it is possible to prevent breakage and blockage of the breather tube, and to not spoil the aesthetics of the installation location.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a first embodiment of a dirty water basin with a vacuum valve according to the present invention.

FIG. 2 is an enlarged plan view showing a filter member provided in the breather tube storage chamber of the wastewater tank with a vacuum valve according to the present invention.

FIG. 3 is a vertical cross-sectional view showing a modified example of the dirty water basin with a vacuum valve according to the first embodiment.

FIG. 4 is an enlarged vertical cross-sectional view of a drainage unit provided at the bottom of the breather pipe storage chamber in the second embodiment of the dirty water tank with a vacuum valve according to the present invention.

FIG. 5 is a vertical cross-sectional view showing a conventional sewage tank with a vacuum valve.

[Explanation of symbols]

 20 Sewage masu 22 Valve masu 21 Vacuum valve, 29 Breather pipe, 33 Breather pipe storage chamber, 34 Filter member, 35 Permeation layer, 46 Rainwater sprue, 47 Permeable pipe, 48 Through hole, 49 Permeation layer, H drainage part, W drainage .

Claims (1)

[Claims] 1. A sewage sash buried underground to temporarily store sewage, and a vacuum valve which is sunk underground and for opening and closing for forcibly transporting the sewage in the sewage masu by vacuum is stored. When equipped with a breather pipe storage chamber that communicates with the atmosphere that stores the breather pipe that supplies the outside air to the vacuum valve controller that controls the opening and closing of the vacuum valve underground, the breather pipe storage chamber is provided at the bottom of the breather pipe storage chamber. A sewage system with a vacuum valve, which is equipped with a drainage section that discharges the water that has entered the tube storage room into the soil.