JPH0841974A - Air pressure feed-drain system for underground sewage water and miscellaneous drainage - Google Patents

Abstract

PURPOSE:To allow underground sewage water and miscellaneous drainage to be force-fed and drained to a sewer by air pressure from a drain tank installed on the lowermost underground floor without using a submerged pump. CONSTITUTION:A drain tank 1 is installed on the lowermost underground floor 2, and the inside of the drain tank 1 is partitioned into an upper chamber 5 and a lower chamber 6 by a partition wall 4, Both chambers 5, 6 are connected in the communicated state through a first switching valve 9, and a drain pipe 11 for sewage water and miscellaneous drainage discharged from each part is connected to the upper chamber 5 side. A force-feed pipe 14 for force-feeding the sewage water and miscellaneous drainage to a sewer 17 is connected to the bottom part on the lower chamber 6 side, and a compressed air pipe 22 for feeding compressed air from a compressor 19 is connected to the upper part on the lower chamber 6 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a pneumatic pumping of sewage and miscellaneous wastewater from underground to sew underground wastewater such as toilets and miscellaneous wastewater from kitchens, etc. It concerns drainage systems.

[0002]

2. Description of the Related Art Conventionally, in order to discharge dirty water from toilets or the like and underground wastewater from kitchens, etc., which are generated underground, to the main sewer pipe, as shown in FIG. A drainage tank 31 of a volume is provided, and wastewater / miscellaneous wastewater generated in toilets, kitchens, etc. is collected in the drainage tank 31 via a drain pipe, and a certain amount of wastewater / miscellaneous wastewater is always secured in the drainage tank 31. However, the water is temporarily stored, and the water is pumped up through the submersible pump 32 and the drainage pipe 33 installed inside the drainage tank 31, and discharged and discharged to the sewer main pipe 34.

[0003]

In the conventional drainage tank / submersible pump type drainage system described above, since the submersible pump 32 is installed inside the drainage tank 31, when the submersible pump 32 is inspected or a failure occurs. In order to carry out the work, the work had to go into the drainage tank 31 and the work had to be done in a bad environment. In addition, 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 drainage tank, and it is necessary to increase the capacity of the drainage tank by that amount. As the height increased, a large installation space had to be secured.

[0004]

In order to solve the above-mentioned problems, the pneumatic pumping and draining system for underground sewage and miscellaneous drainage according to the present invention has a drainage tank installed on the bottom floor of the underground, The inside of the drainage tank is partitioned by a partition wall into an upper chamber and a lower chamber, both chambers are connected and connected 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 side. The bottom of the lower chamber should be connected with a pressure pipe for pumping sewage and miscellaneous wastewater to the main sewer, and the upper part of the lower chamber with a compressed air pipe for supplying compressed air from a compressor. It is a feature.

[0005]

Since the pneumatic feed / drainage system for underground wastewater / miscellaneous drainage according to the present invention is configured as described above,
Sewage and miscellaneous wastewater discharged from each part flows into the upper chamber of the drainage tank through the drainage pipe, passes through the first opening / closing valve, and is stored in the lower chamber. When the water level of sewage and miscellaneous waste water stored in the lower chamber reaches a predetermined level, the first opening / closing valve closes and the lower chamber is sealed, and then the second opening / closing valve opens, and the compressor operates to compress. Compressed air is supplied to the lower chamber through the air tube. Due to this air pressure, sewage and miscellaneous wastewater in the lower chamber is pumped through the pumping pipe and discharged to the sewer main. When drainage of sewage and miscellaneous wastewater in the lower chamber ends, the compressor stops due to the pressure drop in the lower chamber, the second on-off valve closes and the first on-off valve returns to the open state, and the above cycle is repeated. ,
Sewage and miscellaneous wastewater generated underground can be sequentially pumped and discharged to the main sewer by 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 block diagram of an air pressure drainage system for underground wastewater and miscellaneous wastewater according to an embodiment of the present invention. Drainage tank 1
Is installed on the bottom floor 2 of the basement through a concrete foundation 3. The drainage tank 1 is made of a steel plate and is partitioned into an upper chamber 5 and a lower chamber 6 by a partition wall 4 having an inclined interior, and at least the lower chamber 6 side is configured as a pressure vessel.
Further, 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 in the lower chamber 6 in strength.
Are provided respectively.

The upper chamber 5 and the lower chamber 6 of the drainage tank 1 are connected to each other through a first opening / closing valve 9 on the lowest position side of the inclined partition wall 4. The upper chamber 5 of the drain tank 1 is connected to a drain pipe 11 that collects dirty water generated in the toilet 10 or the like, or sewage generated in a kitchen or the like, and a vent cap 12 is provided between the upper chamber 5 and the atmosphere. A ventilation pipe 13 that communicates with each other 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 feed pipe 14, and the other end has a sewer main pipe 1.
7 is connected to the lower chamber 6 so that sewage and miscellaneous drainage stored in the lower chamber 6 can be pumped to the sewer main 17.

Further, at 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 operated is equipped with a pressure adjusting valve 20 and a second opening / closing valve 21. The compressed air is supplied to the upper space of the lower chamber 6 through the compressed air pipe 22. The compressor 19 is designed to detect and stop the sewage and miscellaneous waste water in the lower chamber 6 when it is discharged to the sewer main pipe 17 and the pressure inside the lower chamber 6 drops.

[0009] However, sewage and miscellaneous wastewater generated in the toilet 10 and the kitchen, etc. 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 at the lowest position. And is stored in the lower chamber 6 through the first opening / closing valve 9 which is in an open state during storage. The inside of the upper chamber 5 is maintained at atmospheric pressure via a ventilation pipe 13. When the water level of dirty water / miscellaneous wastewater stored in the lower chamber 6 rises and reaches a predetermined level, the level meter 18 detects this and closes the first opening / closing valve 9 to close the lower chamber 6 in a sealed state. . Following this, the second opening / closing valve 21 is opened and the compressor 19 is operated to supply compressed air whose pressure is adjusted by the pressure adjusting valve 20 to the upper space of the lower chamber 6 through the compressed air pipe 22.

Due to this air pressure, the sewage and miscellaneous wastewater in the lower chamber 6 is pressure-fed through the pressure-feeding pipe 14 connected to the bottom of the lower chamber 6, and is discharged and discharged to the sewer main pipe 17. Since the pressure in the upper space of the lower chamber 6 is kept constant by the pressure control valve 20 during the discharge of the dirty water / miscellaneous drainage in the lower chamber 6, the dirty water / miscellaneous drainage is discharged to the sewer main 17 in a stable state. I can continue.

When the drainage of sewage and miscellaneous wastewater in the lower chamber 6 is completed, compressed air escapes to the sewer main pipe 17 and the pressure in the lower chamber 6 drops, so the compressor 19 is stopped by detecting this. The second opening / closing valve 21 is closed and the first opening / closing valve 9 is returned to the open state. By repeating the above cycle, sewage and miscellaneous wastewater generated underground can be sequentially pumped and discharged to the sewer main 17 by utilizing air pressure. The pressure of the compressor 19 is determined by the height difference between the lowest floor of the basement where the drainage tank 1 is installed and the position of the sewer main 17, and the cleaning of the upper chamber 5 of the drainage tank 1 is performed from the manhole 7. The lower chamber 6 of the drainage tank 1 is cleaned through the inspection port 8.

According to such a pneumatic feed and drainage system, drainage equipment such as a submersible pump is not installed in the drainage tank, and when the drainage equipment such as the compressor 19 is inspected or repaired at the time of failure, the drainage tank 1 Since the work can be performed without going inside, the work such as inspection and repair can be facilitated, and the work environment can be improved. Also,
Since the drainage tank 1 can be manufactured and installed independently,
Construction and installation space are not restricted by the relationship with the concrete skeleton, and since it is not necessary to secure an extra volume in the drain tank 1, the drain tank 1 can be minimized in size, It is possible to secure flexibility for installation, shorten the construction period, and reduce the construction cost.

[0013]

As described above, according to the pneumatic feed and drainage system for underground sewage and sewage according to the present invention, the sewage and sewage is stored in the lower chamber of the drain tank and is stored outside. Since the compressed air supplied from the installed compressor is used to pump and drain the sewage main,
It facilitates inspection and repair of drainage equipment such as compressors,
The working environment can be improved. Also, because the drainage tank can be manufactured and installed independently of the concrete skeleton, there are no restrictions on construction and installation space, and the drainage tank can be minimized in size. It is possible to secure flexibility for installation, greatly shorten the construction period, and significantly reduce construction costs.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an air pressure delivery / drainage system for underground wastewater / miscellaneous drainage 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]

 1 Drain tank 2 Floor on the lowest floor of basement 4 Partition wall 5 Upper chamber 6 Lower chamber 9 First opening / closing valve 11 Drain pipe 14 Pump pipe 15 Check valve 17 Sewage main pipe 19 Compressor 20 Pressure regulating valve 21 Second opening / closing valve 22 Compression Air tube

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toyoharu Tokai Moto Akasaka 1-2-7, Minato-ku, Tokyo Kashima Construction Co., Ltd.

Claims (3)

[Claims] 1. A drainage tank is installed on the bottom floor of the basement,
The interior of the drainage tank is partitioned by a partition wall into an upper chamber and a lower chamber, both chambers are connected and connected via a first opening / closing valve, and drain pipes for sewage and miscellaneous drainage discharged from each part are connected to the upper chamber side. Connected to the bottom of the lower chamber, a pressure pipe for pumping sewage and miscellaneous wastewater to the main sewer, and a compressed air pipe for supplying compressed air from a compressor to the upper part of the lower chamber. An air pressure drainage system for underground sewage and miscellaneous drainage. 2. The pneumatic feed of sewage and miscellaneous drainage from underground according to claim 1, wherein the partition wall is provided so as to be inclined toward the first opening / closing valve side that connects the upper chamber and the lower chamber in communication with each other. Drainage system. 3. The pneumatic feed / drainage system for underground sewage / miscellaneous drainage according to claim 1, wherein a pressure adjusting valve for adjusting the pressure of the compressed air is provided on the discharge side of the compressor.