JP2787936B2 - Pneumatic feeding and drainage system for sewage and gray water from underground - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of pneumatically transporting sewage and miscellaneous sewage from underground by draining sewage from underground toilets and sewage from kitchens to sewage mains using compressed air. It concerns drainage systems.

[0002]

2. Description of the Related Art Conventionally, in order to drain sewage from a toilet or the like generated underground or miscellaneous drainage from a cooking place to a sewage main pipe, as shown in FIG. A drain tank 31 with a capacity is provided, and sewage / miscellaneous drainage generated in toilets, cooking places, etc. is collected in the drain tank 31 through a drain pipe, and a certain amount or more of sewage / miscellaneous drainage is always secured in the drain tank 31. While being temporarily stored, it is pumped up through a submersible pump 32 and a drain pipe 33 installed in a drain tank 31 and discharged to a sewage main pipe 34.

[0003]

In the conventional drainage tank / submersible pump type drainage system described above, the submersible pump 32 is installed inside the drainage tank 31, so that the submersible pump 32 can be inspected or a failure can occur. In order to perform the work, the operator had to enter the drainage tank 31 in order to perform the work, and the work had to be performed in a bad environment. Also, in order to maintain the performance of the submersible pump, it is necessary to secure the minimum amount of sewage and miscellaneous drainage in the drain tank, and it is necessary to increase the volume of the drain tank accordingly. And the installation space had to be secured.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a pneumatic feed / drainage system for sewage and miscellaneous drainage from the underground according to the present invention is provided by installing a drainage tank on the lowest floor of the underground. The inside of the drainage tank is partitioned into an upper chamber and a lower chamber by a partition wall, and both chambers are connected to each other via a first opening / closing valve, and a drain pipe for sewage and miscellaneous drainage discharged from each part is connected to the upper chamber. The bottom of the lower chamber side is connected to a pumping pipe that feeds sewage and gray water to the sewer main pipe, and the upper part of the lower chamber side is connected to a compressed air pipe that supplies compressed air from a compressor. It is a feature.

[0005]

The pneumatic feed and drainage system for underground wastewater and gray water according to the present invention is constructed as described above.
Sewage and miscellaneous wastewater discharged from each part flows into the upper chamber of the drainage tank via the drainpipe, passes through the first opening / closing valve, and is stored in the lower chamber. When the water level of the sewage / miscellaneous wastewater stored in the lower chamber reaches a predetermined level, the first opening / closing valve is closed, the lower chamber is closed, and then the second opening / closing valve is opened, and the compressor operates to compress. Compressed air is supplied to the lower chamber through the air pipe. The sewage and miscellaneous wastewater in the lower chamber is pumped by the air pressure through the pressure feed pipe and discharged to the sewer main pipe. When drainage of sewage / miscellaneous wastewater in the lower chamber ends, the compressor stops due to the pressure drop in the lower chamber, the second open / close valve closes, the first open / close valve returns to the open state, and the above cycle is repeated. ,
Sewage and miscellaneous wastewater generated underground can be sequentially pumped and drained to the sewer main using air pressure.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a configuration diagram of a pneumatic feeding and draining system for sewage / miscellaneous drainage from underground according to an embodiment of the present invention. Drain tank 1
Is installed via a concrete foundation 3 on the floor 2 at the lowest floor of the basement. The drainage tank 1 is made of a steel plate, and is divided into an upper chamber 5 and a lower chamber 6 by a partition wall 4 having an inclined inside, and at least the lower chamber 6 is configured as a pressure vessel.
A manhole 7 is provided in the upper chamber 5 of the drainage tank 1, and an inspection port 8 having a structure capable of withstanding the set pressure is provided in the lower chamber 6.
Are provided respectively.

The upper chamber 5 and the lower chamber 6 of the drainage tank 1 are connected to each other via a first opening / closing valve 9 at the lowest position of the inclined partition wall 4. The upper chamber 5 of the drainage tank 1 is connected to a drain pipe 11 for collecting sewage generated in a toilet 10 or the like, or miscellaneous drainage generated in a cooking place or the like, and connects a vent cap 12 to the upper chamber 5 and the atmosphere. The ventilation pipe 13 which communicates via is connected. Further, one end of a pressure feed pipe 14 is connected to the bottom of the lower chamber 6 of the drainage tank 1. A check valve 15 and a valve 16 which is always open are provided in the pressure feeding pipe 14, and the other end is connected to the sewage main pipe 1.
The sewage / miscellaneous drainage stored in the lower chamber 6 is connected to the sewage main pipe 17 for drainage.

Further, in the upper part of the lower chamber 6, when a level meter 18 for detecting the water level in the lower chamber 6 detects a predetermined water level, a compressor 19 which is operated operates a pressure regulating valve 20 and a second opening / closing valve 21. The compressed air is supplied through a compressed air pipe 22 to the upper space of the lower chamber 6. The compressor 19 is configured to stop when the sewage and miscellaneous wastewater in the lower chamber 6 is discharged to the sewage main pipe 17 and the pressure inside the lower chamber 6 decreases.

[0009] However, the sewage / miscellaneous drainage generated in the toilet 10 or the cooking place flows into the upper chamber 5 of the drainage tank 1 through the drainage pipe 11, and flows down along the slope of the partition wall 4 to the lowest position. At the time of storage, passes through the first opening / closing valve 9 which is open, and enters the lower chamber 6 and is stored. The inside of the upper chamber 5 is maintained at an atmospheric pressure via a ventilation pipe 13. When the water level of the sewage / miscellaneous wastewater stored in the lower chamber 6 rises and reaches a predetermined level, the level gauge 18 detects this and closes the first opening / closing valve 9 to make the lower chamber 6 hermetically sealed. . Subsequently, the second opening / closing valve 21 is opened, and the compressor 19 is operated to supply the compressed air whose pressure has been adjusted by the pressure adjusting valve 20 to the upper space of the lower chamber 6 through the compressed air pipe 22.

The sewage and miscellaneous drainage in the lower chamber 6 is pumped by the air pressure through a pressure feed pipe 14 connected to the bottom of the lower chamber 6 and discharged to a sewage main pipe 17. During the drainage of sewage and gray water in the lower chamber 6, the pressure in the upper space of the lower chamber 6 is kept constant by the pressure regulating valve 20, so that the sewage and gray water are discharged to the sewage main pipe 17 in a stable state. You can continue.

When the drainage of the sewage and miscellaneous wastewater in the lower chamber 6 is completed, the compressed air flows into the sewage main pipe 17 and the pressure in the lower chamber 6 decreases. The second opening / closing valve 21 is closed, and the first opening / closing valve 9 returns to the open state. By repeating the above cycle, sewage and miscellaneous wastewater generated underground can be sequentially pumped and drained to the sewage main pipe 17 using air pressure. In addition, the pressure of the compressor 19 is determined by the height difference between the lowermost floor of the basement where the drainage tank 1 is installed and the position of the sewage main pipe 17, and the upper chamber 5 of the drainage tank 1 is cleaned from the manhole 7. Cleaning of the lower chamber 6 of the drainage tank 1 is performed through the inspection port 8.

According to such an air pressure feeding and drainage system, no drainage device such as a submersible pump is installed in the drainage tank, and when the drainage device such as the compressor 19 is inspected or repaired at the time of failure, the drainage tank 1 is not used. Since the work can be performed without entering the inside, work such as inspection and repair can be facilitated, and the working environment can be improved. Also,
Since the drainage tank 1 can be manufactured and installed independently,
The construction and installation space are not restricted by the relationship with the concrete skeleton, and further, since there is no need to secure an extra volume in the drainage tank 1, the drainage tank 1 can be minimized. It is possible to secure the flexibility for installation, shorten the construction period, reduce the construction cost, and the like.

[0013]

As described above, according to the air pressure drainage system for underground sewage / drainage according to the present invention, sewage / drainage is stored in the lower chamber of the drainage tank, and the wastewater is drained to the outside. Because the compressed air supplied from the installed compressor is used to pump and drain to the sewer main,
Easy inspection and repair of drainage equipment such as compressors
The working environment can be improved. In addition, since the drainage tank can be manufactured and installed independently of the concrete body, there are no restrictions on construction and installation space, and the drainage tank can be minimized. Thus, it is possible to secure flexibility in installation, significantly shorten the construction period, significantly reduce construction costs, and the like.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a pneumatic feeding and drainage system for sewage and miscellaneous drainage from underground according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a conventional drainage tank / submersible pump type drainage system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drainage tank 2 Floor of the lowermost basement floor 4 Partition wall 5 Upper room 6 Lower room 9 1st opening and closing valve 11 Drainage pipe 14 Pumping pipe 15 Check valve 17 Sewage main pipe 19 Compressor 20 Pressure regulating valve 21 Second opening and closing valve 22 Compression Air tube

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toyoji Tokai 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) References JP-A-52-16857 (JP, A) 4-12582 (JP, U) JP 39-6731 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) E03F 5/22

Claims (3)

(57) [Claims] 1. A drainage tank is installed on the floor of the lowest basement floor,
The interior of the drainage tank is partitioned into an upper chamber and a lower chamber by a partition wall, and both chambers are connected to each other through a first opening / closing valve, and a drain pipe for sewage and miscellaneous drainage discharged from each part is provided on the upper chamber side. Connected to the bottom of the lower chamber side, a pumping pipe for pumping sewage and gray water to the sewer main pipe, and a compressed air pipe for supplying compressed air from the compressor to the upper part of the lower chamber side. A pneumatic feed and drainage system for underground sewage and gray water. 2. The pneumatic feeding of sewage and miscellaneous drainage from underground according to claim 1, wherein the partition wall is provided so as to be inclined toward a first opening / closing valve which connects the upper chamber and the lower chamber. Drainage system. 3. The system according to claim 1, further comprising a pressure regulating valve on the discharge side of the compressor for regulating the pressure of the compressed air.