JPH07102626A - Waste water basin with vacuum valve - Google Patents

Abstract

PURPOSE:To actuate a vacuum valve to which a breather pipe is connected by forming an air reservoir inside by way of providing a cap excellent in airtightness and watertightness in a layer of favourable permeability and opening the head end of the breather pipe to this air reservoir. CONSTITUTION:A cap 14 excellent in airtightness and watertightness is provided in a permeable layer 21 of a container 13 by way of opening its lower side, and by forming an air reservoir 17, air in the air reservoir 17 becomes atmospheric pressure through the permeable layer 21. A head end 18 of a breather basin 12 is opened in the air reservoir 17. Waste water discharged from a waste water discharging point flows in a waste water basin part 6 from a waste water inflow pipe 7 and is temporarily reserved, and when it becomes higher than an upper level, a detection pipe 8 detects it and a vacuum valve 4 is opened. Thereby, the inside of a waste water suction pipe 9 is communicated to a vacuum waste water pipe 10 and the inside of the waste water suction pipe becomes vacuum, and waste water in the waste water basin part 6 is drawn and automatically flows to a vacuum sewage main pipe. When it becomes lower than a lower level and air enters from the lower end of the waste water suction pipe 9, pressure change is detected and the vacuum valve is closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage box with a vacuum valve.

[0002]

2. Description of the Related Art Vacuum type sewerage facilities temporarily store sewage discharged from sewage discharge points such as toilets, washrooms and sinks at home in a sewage basin with a vacuum valve and then flow into the sewage basin with a vacuum valve. Sewage is collected in a vacuum pump station after passing through a vacuum sewage pipe and a vacuum sewage main pipe, and then sent to the sewage treatment plant. As described in JP-A-3-247828, the sewage basin with a vacuum valve used at this time temporarily stores sewage in the sewage basin, and the amount of the sewage is constant (upper level). When the above is reached, the vacuum valve is opened and the sewage is automatically sent to the vacuum vacuum sewage passage and the main sewage, and when the volume falls below a certain level (lower level), the vacuum valve is closed and the sewage is collected in the sewage box again Has become.

The vacuum valve of the waste water basin with a vacuum valve is designed so that the atmospheric pressure is introduced into the vacuum valve through a breather pipe which is open to the atmosphere, and the vacuum valve operates without trouble. However, if the tip of the breather tube is projected to the ground, it is not preferable in appearance, and the installation place is limited. Further, a vehicle, a pedestrian, or the like may collide with the tip of the breather pipe protruding above the ground and be damaged, or the pedestrian may be mischievously blocked.

As a method for solving this problem, as disclosed in Japanese Patent Laid-Open No. 5-71162, a breather pipe storage chamber is provided by digging land, and a through hole is formed in the bottom wall of the breather pipe storage chamber. , A rainwater permeation layer is provided on the outside so that the rainwater flowing into the breather tube storage chamber can permeate through the permeation layer through the holes, and a lid is provided on the upper surface.
A method is known in which the tip of the breather tube is opened in the breather tube storage chamber.

[0005]

However, in the method of opening the breather tube in the breather tube storage chamber,
When the amount of rainwater that flows into the breather pipe storage chamber increases more than the amount of rainwater that permeates from the permeation layer provided outside the breather pipe storage chamber, the rainwater accumulates in this breather pipe storage chamber, and this breather pipe storage chamber There is a problem that rainwater enters the breather pipe that opens at the.

[0006] The breather pipe storage chamber gradually becomes shallower due to the entry of earth and sand when a vehicle or a person passes over it through the gap in the lid of the breather pipe storage chamber, or the flow of gravel or the like together with rainwater. There is also the problem that rainwater, earth and sand, etc. will enter through the opening of the breather pipe. Therefore, an object of the present invention is to provide a sewage box with a vacuum valve in which the breather pipe does not project above the ground, and rainwater or earth and sand do not enter the breather pipe.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and includes a sewage box for temporarily storing sewage, and a detection pipe for detecting the amount of sewage collected in the sewage box. In a sewage basin with a vacuum valve, which comprises a sewage suction pipe for sucking sewage from the sewage basin and a vacuum valve provided between the sewage suction pipe and a vacuum sewage pipe communicating with the vacuum sewer main, A freezer pipe that introduces atmospheric pressure is attached, and a cap made of a material with excellent airtightness and watertightness that is open at the bottom and closed at the top and sides is embedded in a layer with good permeability that communicates with the ground. An air reservoir is formed in the cap, and the tip of the freezer tube is opened in the air reservoir.

In the present invention, the layer having good permeability to the ground means a layer having many gaps such as crushed stones and gravel layers which are exposed on the ground, and a layer into which rainwater permeates well. If there is no such layer, a hole is dug and crushed stone or gravel is put in this hole as appropriate, or a container with through holes is opened in the bottom filled with crushed stone or gravel, etc. The cylinder may be filled to artificially create a permeation layer that communicates with the ground. In the present invention, the material having excellent airtightness and watertightness is a material that does not allow water or air to pass therethrough, and ceramics, metals, synthetic resins and the like are preferable.

[0009]

In the sewage basin with a vacuum valve of the present invention, a cap made of a material having excellent airtightness and watertightness, in which a lower part is opened and a upper part and a side part are closed in a layer having good permeability that communicates with the ground, is provided. Since it is embedded, an air reservoir is formed in this cap, and the tip of the breather pipe attached to the vacuum valve of the waste water chamber with a vacuum valve is open in this air reservoir, so this breather pipe The tip of is not protruding above the ground. Therefore, it is not visible from the outside and has a good appearance. In addition, since it does not project to the ground, it does not collide with a vehicle or a person to be damaged, and is not blocked by being mischievous by a person.

In addition, there is a layer with good permeability such as crushed stone and gravel around this cap, and this layer communicates with the ground. Therefore, the air in the air reservoir communicates with the atmosphere and becomes atmospheric pressure. ing. Therefore, the inside of the breather pipe opening to the air reservoir is at atmospheric pressure, and the vacuum valve connected to the breather pipe operates without any trouble. Even if the water level rises to this highly permeable layer due to heavy rain, the lower part of the cap made of a material with excellent airtightness and watertightness opens and the upper part and side parts are closed. Therefore, air does not leak from the air reservoir inside this cap. Therefore, rainwater does not enter the breather pipe opened in the cap.

[0011]

EXAMPLE Next, an example of the sewage box with a vacuum valve of the present invention will be described. 1 and 2 show an embodiment of a sewage basin with a vacuum valve of the present invention, and FIG. 1 is a sectional view of the sewage basin with a vacuum valve,
FIG. 2 is an enlarged sectional view showing the vicinity of the tip of the breather tube of FIG.

1 and 2, reference numeral 1 denotes a sewage basin with a vacuum valve. The structure of the sewage basin with a vacuum valve 1 is such that a central portion is slightly swollen, and a bowl-shaped reservoir 61 is formed at the bottom. The inside of the sewage basin body 2 is vertically divided by a partition plate 3, the upper part is a vacuum valve chamber 5 in which a vacuum valve 4 is installed, and the lower part is a sewage basin part 6 for temporarily storing sewage. There is. Sewage discharged from a wastewater discharge place such as a toilet, a washroom, a sink, etc. of the household naturally flows down into the wastewater basin 6 from a wastewater inflow pipe 7. Reference numeral 8 denotes a detection pipe. The detection pipe 8 hangs down in the wastewater container 6, and when the wastewater accumulates, the air pressure inside the detection pipe 8 rises, and the height of the wastewater is detected by the change in the air pressure. The vacuum valve 4 opens when the level exceeds the upper level. Further, when the pressure becomes lower than the lower level, the vacuum valve 4 is closed by detecting the change in atmospheric pressure.

Numeral 9 is a sewage suction pipe made of vinyl chloride resin having an inner diameter of 75 mm. One end 15 of the sewage suction pipe 9 hangs down to near the lower level of the sewage box, and the other end thereof is a vacuum valve 4. It is connected to the. The position of this end 15 is designed to open 60 to 70 mm above the bottom surface of the center of the reservoir 61 of the dirty water container 6. The material of the sewage suction pipe may be any material as long as it has good durability. For example, concrete, metals such as stainless steel and iron, inorganic substances such as ceramics and synthetic resins such as glass fiber reinforced ester resin, vinyl chloride resin and polyethylene resin are suitable. In particular, vinyl chloride resin is most suitable.

The end of the vacuum valve 4 to which the sewage suction pipe 9 is connected becomes a vacuum vacuum sewage pipe 10, and the end thereof communicates with a vacuum sewage main pipe. Therefore, when the vacuum valve 4 is opened, the inside of the sewage suction pipe 9 is connected to the vacuum sewage pipe 10, and the sewage suction pipe 9 is connected.
The inside is evacuated, and the dirty water is sucked from the dirty water container portion 6. 12 is a breather pipe, and this breather pipe 12 is connected to the vacuum valve 4. The vacuum valve 4 is well known, and is disclosed in, for example, WO90 / 503128. Reference numeral 13 denotes a cylindrical container having a bottom wall 19. A through hole 16 is provided in the bottom wall 19 of the container 13, and crushed stones are packed in the container 13 to form an infiltration layer 21. The container 13 is buried in the soil, and the permeation layer 21 is exposed above the ground. In addition, crushed stone is also provided on the outside of the container 13 to form the permeation layer 22.

Reference numeral 14 denotes a bowl-shaped cap made of vinyl chloride resin having excellent airtightness and watertightness, which is provided in the permeation layer 21 in the container 13 so as to open downward. An air reservoir 17 is formed inside. Therefore, since the air in the air reservoir 17 communicates with the atmosphere through the permeation layer 21, the inside of the air reservoir 17 is at atmospheric pressure. The tip 18 of the breather tube 12 opens into the air reservoir 17. Reference numeral 11 denotes an air introduction pipe, which has a tip open to the ground and makes the inside of the wastewater basin 6 atmospheric pressure. After the vacuum valve 4 is opened, air is introduced from the air introduction pipe 11. Is introduced, and the sewage becomes a gas-liquid multiphase flow and is transported downstream.

Next, the operation of the sewage box with a vacuum valve 1 will be described. Normally, the vacuum valve 4 is closed. The sewage discharged from sewage discharge points such as a toilet, a washroom, and a sink in a home flows down naturally into the sewage basin 6 from the sewage inflow pipe 7, and is temporarily stored in the sewage basin 6. When the amount of sewage in the sewage basin 6 increases and becomes higher than the upper level, the detection pipe 8 detects and the vacuum valve 4 opens. Then, since the inside of the sewage suction pipe 9 is connected to the vacuum vacuum sewage pipe 10, the sewage suction pipe 9
The inside becomes a vacuum, the sewage in the sewage box 6 is sucked, and the sewage automatically flows from the vacuum sewage pipe 10 to the vacuum sewer main. The amount of sewage in the sewage box 6 gradually decreases,
Finally, when the level becomes lower than the lower limit and air enters from the lower end of the dirty water suction pipe 9, the detection pipe 8 detects this pressure change, sucks air for a while, and then the vacuum valve 4 is closed.

Since the tip of the breather tube 12 is not on the ground, it is unknown where it is from the outside.
Don't worry about the installation location. Further, since the tip of the breather tube 12 communicates with the atmosphere through the permeation layer 21, the vacuum valve 4
Atmospheric pressure can be introduced into. Even if the water level rises above the cap 14 due to heavy rain, the upper and lateral sides of the cap 14 are covered with a material having excellent airtightness and watertightness. The air inside does not leak to the outside and therefore this air reservoir 17
No rainwater comes in.

[0018]

As described above, in the sewage basin with a vacuum valve of the present invention, since the tip of the breather pipe attached to the vacuum valve does not project to the ground, it is only possible to take a quick look.
It is unknown where the breather tube is. Therefore, there is no problem in the installation place. Further, since the tip of the breather tube communicates with the atmosphere through the permeation layer, it does not hinder the operation of the vacuum valve. Also, since the lower part opens in this permeation layer and the upper part and the side part open the tip of the breather tube in the air reservoir in the cap made of a material with excellent airtightness and watertightness,
It is safe because rainwater does not enter the breather pipe.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a sewage basin with a vacuum valve according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing the vicinity of the tip of the breather tube of FIG.

[Explanation of symbols]

 1 Sewage basin with vacuum valve 2 Sewage basin body 3 Partition plate 4 Vacuum valve 5 Vacuum valve chamber 6 Sewage basin section 7 Sewage inflow pipe 8 Detecting pipe 9 Sewage suction pipe 10 Vacuum sewage pipe 11 Atmosphere introducing pipe 12 Breather pipe 13 Container 14 Cap 17 Air reservoir 21, 22 Permeation layer

Claims (1)

[Claims] 1. A sewage box for temporarily storing sewage, a detection pipe for detecting the amount of sewage accumulated in the sewage box, a sewage suction pipe for sucking sewage from the sewage box, the sewage suction pipe and vacuum sewage. In a sewage basin with a vacuum valve consisting of a vacuum valve provided between the main pipe and a vacuum sewage pipe, a breather pipe for introducing atmospheric pressure to the vacuum valve is attached to the sewage basin that is well permeable to the ground. A cap made of a material with excellent airtightness and watertightness that is open at the bottom and closed at the top and sides is embedded to form an air reservoir inside the cap, and the tip of the breather pipe is A sewage box with a vacuum valve, which has an opening inside.