JP4396933B2 - Drainage pumping system - Google Patents

Description

  The present invention relates to a drainage pumping system for pumping drainage discharged from a water supply / drainage facility such as a toilet installed inside a building.

FIG. 7 is a flowchart showing various conventional drainage pumping systems. The drainage pumping systems 101a, 101b, and 101c shown in FIGS. 7A, 7B, and 7C, respectively, discharge drainage 103 discharged from a water supply / drainage facility 102 such as a toilet installed in a building into a drainage tank 104. Once stored, it is pumped by a pump 105.
Since the drainage tank 104 has a sealed structure, when the drainage discharged from the water supply / drainage facility 102 flows into the drainage tank 104 through the inflow pipe 106, the drainage 103 in the drainage tank 104 passes through the discharge pipe 107. When discharged, the air pressure in the drain tank 104 varies.
In order to alleviate this fluctuation in air pressure, a vent 109 is provided in the drain tank 104 so that air in the upper space 108 in the drain tank 104 can be taken in and out through the vent 109.

A drainage pumping system 101 a shown in FIG. 7A shows a case where only the vent 109 is provided in the drainage tank 104.
In the drainage pumping system 101b shown in FIG. 7 (B), a vent pipe 111 for opening to the outside atmosphere is provided in the vent 109, and the vent pipe 111 is extended to the outside, so that the odor can be taken indoors. I try to prevent diffusion. The configuration of the drainage pumping system 101b shown in FIG. 7B is also described in the drainage pumping system described in Patent Document 1 (Japanese Patent Laid-Open No. 2002-275972).
7C shows a case where a deodorizing filter 110 is connected to a pipe provided in the vent 109. The drainage pumping system 101c shown in FIG.
As a technique related to the airbag constituting the drainage pressure feeding system according to the present invention, Patent Document 2 discloses a water supply facility having an airbag-type water hammer preventer.

JP 2002-275972 A "Knowledge of practical design of water supply and drainage and sanitation facilities planning", 1st edition, Ohm Co., Ltd., June 20, 2000, p74-75

In the drainage pumping system 101a shown in FIG. 7A, odors in the drainage tank 104 may diffuse into the room through the vent 109 and have an adverse effect.
Further, in the drainage pumping system 101b shown in FIG. 7B and the drainage pumping system described in Patent Document 1, when the vent pipe is connected to the vent and extended to the outdoors, the laying space for the vent pipe is not provided. It is necessary to secure the piping work.
It is necessary to design and construct this ventilation pipe line with great care so as not to provide a U-shaped portion between the drain tank and the outdoor atmosphere. This is because if the U-shaped part is at one place, water in the vent pipe will condense and water will accumulate in the U-shaped part to form a water-sealed part between the drain tank and the outdoor atmosphere. This is because the air will not flow freely and will no longer function as a vent pipe. Therefore, in the drainage pressure feeding system, a technique capable of eliminating the ventilation pipe has been demanded.
In the drainage pumping system 101c shown in FIG. 7 (C), it is necessary to check and replace the filter 110, and the maintenance is complicated.

  The present invention has been made to solve such a problem, and eliminates a ventilation pipe that is conventionally provided in a drainage pumping system and opens to the outside atmosphere, thereby simplifying the entire system pipe. It is an object of the present invention to provide a drainage pumping system capable of preventing adverse effects such as odor and harmful substances caused by drainage.

To achieve the above object, the exhaust pressure delivery system according to the present invention, the waste water discharged from plumbing installed inside the building, once feed discharge pressure pumped by pump After stored in sealed drain tank In the system, the upper space of the drainage tank communicates with an air storage section that is sealed so that the air storage volume can be freely changed, and the drainage tank is accompanied by a change in the level of drainage in the drainage tank. The air moves between the air storage part and the air storage part, and the air storage part freely deforms in conjunction with the movement of the air, and the water supply / drainage facility is a toilet in which a water supply tank for supplying water to the toilet bowl is arranged. In addition, an expandable / contractible face body structure constituting the air storage portion is installed in the water supply tank, and the face body structure and the upper space of the drainage tank are communicated with each other through a communication pipe.

Since the drainage pumping system according to the present invention is configured as described above, it is possible to simplify the entire system pipeline by eliminating the vent pipe that is conventionally provided in the drainage pumping system and is open to the outside atmosphere. In addition, adverse effects such as odor and harmful substances caused by drainage can be prevented.

In the drainage pumping system, in order to prevent adverse effects such as odor, the first requirement that the drainage tank must be completely sealed to the outside atmosphere, and the drainage is changed when the water level in the sealed drainage tank changes in this way. Although the air pressure of the tank fluctuates, there is a second requirement that in order to absorb the fluctuation of the air pressure, it is necessary to take in and out the air in the drain tank. The first request and the second request are contradictory.
Therefore, in the present invention, in order to satisfy the first requirement, first, the drain tank is sealed to completely shut off the air in the drain tank from the external atmosphere, and the odor in the drain tank is To avoid mixing.
Next, in the present invention, in order to satisfy the second requirement, the air in the drainage tank is temporarily stored in the air storage unit. That is, the present inventor paid attention to the fact that the amount of wastewater entering the drainage tank and the amount of drainage discharged from the drainage tank with a time lag thereafter are the same. And the air storage part sealed with respect to the external air | atmosphere was provided in communication with the drainage tank, the air for the time lag was able to be temporarily stored in the air storage part, and the 2nd request | requirement was satisfied.

Specifically, the water level in the drainage tank changes if the upper space of the sealed drainage tank communicates with the deformable air storage part sealed so that the air storage volume can be changed freely. Even if the volume of the upper space changes, the sum of the volume of the upper space of the drainage tank and the air storage volume in the air storage portion is always substantially constant.
For example, if the water level in the drainage tank rises and the air pressure in the upper space rises, the air in the upper space naturally flows to the air storage unit side and restores the air pressure in the upper space. Further, when the water level in the drainage tank is lowered and the air pressure in the upper space is lowered, the air in the air storage portion naturally flows into the drainage tank and restores the air pressure in the upper space.
In this way, fluctuations in air pressure in the upper space are always absorbed by the air storage portion that can freely change the air storage volume, so that the air pressure in the upper space is always kept substantially constant.

In the following embodiment, air moves between the drainage tank and the air storage unit as the water level of the drainage in the drainage tank changes, and the air storage unit freely deforms in conjunction with the movement of the air. I am doing so.
Thus, in the following embodiment, the purpose of simplifying the entire system pipe line by eliminating the vent pipe line that is conventionally provided in the drainage pumping system and opens to the outside atmosphere is realized.

Hereinafter, an embodiment according to the present invention will be described with reference to FIGS.
FIGS. 1 to 6 are diagrams showing an embodiment of the present invention. FIG. 1 is a flow diagram of a drainage pumping system according to an embodiment. FIGS. 2, 3, and 4 are diagrams illustrating a first embodiment of the present invention. It is a flowchart of the drainage pumping system concerning a modification, a 2nd modification, and a 3rd modification.
FIG. 5 is a flowchart of the drainage pumping system when the water supply / drainage facility is a toilet, and FIG. 6 is an explanatory diagram showing the operation of the drainage pumping system shown in FIG.

As shown in FIGS. 1 to 6, the drainage pumping system 1, 1 a to 1 d is a pump after temporarily storing drainage 3 discharged from a water supply / drainage facility 2 installed in a building in a sealed drainage tank 4. It is designed to pump at 5.
Buildings include apartment houses and detached houses, but may be hotels, office buildings, hospitals, and the like. Examples of the water supply / drainage facility 2 include a toilet, a bath, a wash basin, a sink, a kitchen, a washing machine, and the like. In the drainage pumping system 1d shown in FIGS. 5 and 6, the water supply / drainage facility 2 is a toilet.
In the drainage pumping system 1, 1a to 1d, the upper space 8 of the drainage tank 4 communicates with the air storage units 10, 10a to 10c. The air storage units 10 and 10a to 10c can freely change the air storage volume, and have a deformable and sealed configuration.
As the water level L of the drainage 3 in the drainage tank 4 changes, the air A1 moves between the drainage tank 4 and the air storage units 10, 10a to 10c, and is linked to the movement of the air A1. Thus, the air storage portions 10, 10a to 10c are freely deformed.
Thus, when the drainage 3 flows into the drainage tank 4 or when the drainage 3 is discharged from the drainage tank 4 by the pump 5, even if the air pressure in the drainage tank 4 fluctuates, the air in the drainage tank 4 is taken in and out. be able to.

In this way, the increase or decrease in the volume of the upper space 8 due to the change in the water level L after the drainage 3 flows into the drainage tank 4 and before it is extracted by the pump 5 is transferred to the air storage units 10, 10 a to 10 c. The air pressure in the upper space 8 is always kept substantially constant by temporarily moving the air inside and storing it. That is, the air accommodating portions 10, 10a to 10c exhibit the same function as that of the conventional vent pipe.
As a result, it is possible to simplify the entire pipes of the drainage pumping systems 1 and 1a to 1d by eliminating the vent pipes that are conventionally provided in the drainage pumping system and open to the outside atmosphere. Therefore, compared with the prior art that requires a ventilation pipe, the design and construction becomes easier and the degree of freedom is expanded, and the entire drainage pumping system 1, 1a to 1d can be made into a space-saving and simple configuration. In addition, there is no possibility of trouble due to condensation of moisture in the ventilation pipe.
Moreover, since both the drainage tank 4 and the air storage portions 10, 10 a to 10 c communicating with the drainage tank 4 are sealed from the outside, odors and harmful substances (bacteria etc.) due to the drainage 3 do not leak into the room, Adverse effects can be prevented.
That is, it is hygienic because the odor and harmful substances in the drainage tank 4 can be enclosed in the drainage tank 4 and the air storage units 10, 10a to 10c without opening the drainage tank 4 to the outside atmosphere.

1 to 3 and FIG. 5, the air storage portion of the drainage pumping system 1, 1a, 1b, 1d includes an airbag 10 (FIGS. 1 and 5) as a deformable face body structure and a deformable surface structure. The film-like structures 10a and 10b (FIGS. 2 and 3) are used as the planar structures.
The airbag 10 and the membrane-like structures 10a and 10b as the face body structure are provided separately from the drainage tank 4 (FIGS. 1, 2 and 5) or directly provided in the drainage tank 4. (Figure 3).
In this way, if a face body structure (airbag or film-like structure) is used for the air storage portion, the structure for taking in and out the air in the drainage tank 4 is simplified. Further, odors and harmful substances due to the drainage 3 in the drainage tank 4 are contained in the airbag 10 and the membrane structures 10a and 10b and do not leak into the room. The airbag 10 and the membrane structures 10a and 10b do not require maintenance because there are no moving parts.
In addition, although the case of an airbag and a film-like structure was shown as a face structure, a bellows-like bag etc. may be sufficient as a face structure.

In the drainage pumping system 1 c shown in FIG. 4, the air storage unit 10 c includes a cylinder 20 that communicates with the drainage tank 4 and a piston 21 that freely reciprocates within the cylinder 20.
According to the air storage portion 10c, the piston 21 moves and is sealed so that the air storage volume can be freely changed, and the shapes of the cylinder 20 and the piston 21 themselves are not deformed. It is possible to extend the service life by using a durable material.

Next, the embodiment and various modifications shown in FIGS. 1 to 4 will be described in detail.
In the drainage pumping system 1 according to the embodiment shown in FIG. 1, the drainage tank water supply / drainage facility 2 and the drainage tank 4 are connected by an inflow pipe 6. The drainage 3 discharged from the water supply / drainage facility 2 flows into the drainage tank 4 through the inflow pipe 6 and is temporarily stored.
A pump (for example, a submersible pump) 5 is installed in the drainage tank 4, and a discharge pipe 7 is connected to the discharge side of the pump 5. The same applies to the drainage pumping systems 1a to 1c shown in FIGS. Note that the pump 5 may be installed outside the drain tank 4 and connected in the middle of the discharge pipe 7.
The drainage 3 stored in the drainage tank 4 flows through the discharge pipe 7 by the pump 5 and is pumped out of the system. The pump 5 is controlled to perform an intermittent operation that is turned on when the water level L of the drainage 3 rises to a predetermined high position and turned off when the water level L falls to a predetermined low position.

A vent 9 is formed at a predetermined position in the upper space 8 of the drainage tank 4 (here, the ceiling plate 13 of the drainage tank 4). A communication pipe 14 that connects the airbag 10 and the upper space 8 of the drainage tank 4 is attached to the vent 9. As the material of the communication pipe 14, a pipe made of metal or synthetic resin, a tube made of synthetic resin or rubber, and the like are used.
One end of the communication pipe 14 opens into the upper space 8 of the drainage tank 4, and the other end supports the airbag 10.
The airbag 10 is formed in a bag shape and is exposed and installed outside the drainage tank 4. The air bag 10 is deformable so that it contracts when the air A1 flows toward the drainage tank 4 and expands when the air A1 flows into the airbag 10 from the drainage tank 4 (FIG. 1B). )).
The material of the airbag 10 (and film structures 10a and 10b described later) is preferably made of a thin synthetic resin or rubber that has low resistance when expanded and contracted and is resistant to odors and harmful substances. The airbag 10 is formed in a bag shape in which a portion connected to the communication pipe 14 is an opening.
Since the airbag 10 (and the membrane structure 10a) is installed separately from the drainage tank 4 and exposed, the airbag 10 (and the membrane structure 10a) is deteriorated. It can be easily replaced and maintenance work is easy.

As shown in FIG. 1A, when the water level L of the drainage 3 is low, since the volume of the upper space 8 is large, the air storage volume of the airbag 10 is small. Thereafter, as shown in FIG. 1B, when the drainage 3 discharged from the water supply / drainage facility 2 flows into the drainage tank 4 through the inflow pipe 6, the water level L gradually rises.
Then, the air A 1 in the upper space 8 flows upward in the upper space 8 as indicated by an arrow B, and then flows into the airbag 10 through the communication pipe 14. As a result, the airbag 10 is gradually inflated to increase the air storage volume.
Eventually, when the water level L rises to a predetermined height above, the pump 5 is turned on, and the drainage 3 in the drainage tank 4 is pumped out of the system via the discharge pipe 7. When the water level L is lowered to a predetermined low position, the pump 5 is automatically turned off and returns to the state shown in FIG. Thereafter, the above operation is repeated to pump the drainage 3.
As described above, as the water level L of the drainage 3 in the drainage tank 4 changes, the air A1 moves between the drainage tank 4 and the airbag 10, and the airbag is interlocked with the movement of the air A1. 10 can be freely deformed.

In the drainage pumping system 1 a shown in FIG. 2, the membrane structure 10 a includes a bottomed cylindrical container 15 and a partition film 16 that is attached to the container 15 and can be freely deformed. 2 to 6, the same or corresponding parts as those in the embodiment shown in FIG. 1 are denoted by the same reference numerals, the description thereof is omitted, and only different parts will be described.
The partition film 16 partitions the space up and down. That is, the container 15 is partitioned into the lower space 17 and the upper space 18 by the partition film 16. The lower space 17 is a space sealed by the container 15 and the partition film 16, and the air storage volume can be freely changed. The upper space 18 communicates with the outside. The communication pipe 14 is connected to the container 15 and communicates the lower space 17 and the upper space 8 of the drainage tank 4.

FIG. 2A shows a case where the partitioning membrane 16 is positioned below and the lower space 17 is made small, so that the air storage volume of the membrane structure 10a is small. On the other hand, FIG. 2B shows a case where the partition film 16 moves to the upper space 18 side and the lower space 17 is enlarged to increase the air storage volume of the membrane structure 10a.
Therefore, when the water level L of the drainage 3 in the drainage tank 4 is lowered, the air in the lower space 17 moves to the upper space 8 of the drainage tank 4 through the communication pipe 14 (FIG. 2A). If the water level L rises and the air in the upper space 8 rises as shown by the arrow B and moves to the lower space 17 of the membrane structure 10a through the communication pipe 14, the partition membrane 16 The air storage volume can be increased by expanding upward (FIG. 2B). Other operations are the same as those in the embodiment shown in FIG.
Thus, with the change of the water level L of the drainage 3, the air A1 moves between the drainage tank 4 and the membrane-like structure 10a, and the partitioning membrane 16 is freely interlocked with the movement of the air A1. Can be transformed into

The embodiment shown in FIG. 3 shows a case where the function of the membrane structure is provided in the drainage tank 4. That is, in the drainage pumping system 1b, the membrane structure 10b is directly provided in the drainage tank 4.
The membranous structure 10b has a partition film 16 that is attached to the drain tank 4 and can be deformed. The partition film 16 partitions the space up and down. That is, the partition film 16 partitions the upper space 8 of the drainage tank 4 from the upper space 18 that is located on the upper side of the upper space 8 and communicates with the outside.
When the water level L of the drainage water 3 in the drainage tank 4 is lowered, the partition membrane 16 is positioned downward to reduce the air storage volume (FIG. 3A), and when the water level L rises, the partition membrane 16 is moved upward. It can swell to increase the air storage volume (FIG. 3B). Other operations are the same as those of the embodiment and the modification shown in FIGS.
In this way, the air A1 moves between the drainage tank 4 and the membrane structure 10b with the change of the water level L of the drainage 3 in the drainage tank 4, and in conjunction with the movement of the air A1. The partition film 16 can be freely deformed.

In the drainage pumping system 1c shown in FIG. 4, the air storage portion 10c is a piston type provided separately from the drainage tank 4, and exhibits the same functions as the airbag 10 and the membrane structures 10a and 10b described above. It is supposed to be.
The cylinder 20 is partitioned into a lower space 17 and an upper space 18 by a piston 21. The lower space 17 is a sealed space and communicates with the communication pipe 14. The upper space 18 communicates with the outside.
In the membrane structure 10a shown in FIG. 2, the partitioning film 16 is deformed up and down, whereas in the air accommodating portion 10c shown in FIG. 4, the piston 21 freely reciprocates up and down in the cylinder 20. Can do. Other configurations and operations of the drainage pressure feeding system 1c are the same as the modification shown in FIG.
In this way, as the water level L of the drainage 3 in the drainage tank 4 changes, the air A1 moves between the drainage tank 4 and the air storage portion 10c, and in conjunction with the movement of the air A1. As the piston 21 freely moves up and down, the air storage portion 10c can be freely deformed.
4A shows a state where the water level L has fallen and the piston 21 has moved downward. FIG. 4B shows a case in which the water level L has risen and the piston 21 has also moved upward. Show.

The water supply / drainage facility in the drainage pumping system 1d shown in FIG. 5 is a toilet 2 in which a water supply tank 31 for supplying water to the toilet 30 is disposed. The airbag 10 as an expandable / contractible planar body structure is installed in the upper space 32 of the water supply tank 31, and the airbag 10 and the upper space 8 of the drainage tank 4 are communicated with each other through the communication pipe 14.
Thereby, the water supply tank 31 exhibits the function of storing the water that flows to the toilet 30 and the function of storing the airbag 10. That is, the internal space of the water supply tank 31 can be used effectively for both storing water and storing the airbag 10.
Therefore, it is not necessary to separately secure an installation place of the airbag 10, and the drainage pumping system 1d can be made compact. Moreover, since the airbag 10 does not go out, it does not get in the way, and since it is not visible directly, it is good in appearance.

The airbag 10 is provided separately from the drain tank 4 and is connected to the end of the communication pipe 14. A water supply pipe 33 is connected to the water supply tank 31, and water 34 is supplied from the water supply pipe 33 to the water supply tank 31.
By operating an operation unit such as a lever 35 provided in the water supply tank 31, the water 34 stored in the water supply tank 31 flows into the toilet 30 at a stretch. The drainage 3 discharged from the toilet 30 flows into the drainage tank 4 through the inflow pipe 6.
If the water level L1 of the water 34 in the water supply tank 31 is lowered, the water 34 is supplied from the water supply pipe 33, the water level L1 rises, and when the water level L1 rises to a predetermined height when full, the water supply pipe 33 The water supply is automatically stopped.

Since the flow path from the toilet 30 to the inflow pipe 6 is sealed by the water seal of the toilet 30, the drain tank 4 and the airbag 10 are communicated via the communication pipe 14 and sealed to the outside. A space is formed.
Therefore, even if the volume of the upper space 8 of the drainage tank 4 and the air storage volume of the airbag 10 are changed, the total volume of the volume of the upper space 8 and the air storage volume of the airbag 10 is always substantially constant. It is.

Thus, since the sum of the volume of the upper space 8 of the drainage tank 4 and the air storage volume of the airbag 10 is always substantially constant, the water level L of the drainage tank 4 is high when the water level L1 of the water supply tank 31 is at a high position. The drainage 3 is discharged by the pump 5 so that the position becomes low. As a result, since the airbag 10 has a reduced shape, it can be accommodated in the upper space 32 of the water supply tank 31.
After that, when the water 34 in the water supply tank 31 flows into the toilet 30 and then becomes drainage 3 and is stored in the drainage tank 4, the water level L of the drainage tank 4 rises and the volume of the upper space 8 is reduced. The air flows from the drain tank 4 to the airbag 10.
As a result, the airbag 10 is inflated. At this time, the water level L 1 of the water supply tank 31 is lowered and the volume of the upper space 32 is increased, so that the inflated airbag 10 can be accommodated in the upper space 32.
Although the pump 5 is a submersible pump installed in the drain tank 4, the pump 5 may be installed outside the drain tank 4 and connected in the middle of the discharge pipe 7. .
Moreover, although the case where the airbag 10 was installed in the upper space 32 of the water supply tank 31 was shown, the case where one part or all part of the airbag 10 is located in the water of the water supply tank 31 may be sufficient.

Next, the operation of the drainage pumping system 1d and the toilet 2 will be described.
5 (A), (B), (C), and (D) show the states during standby, toilet drain, drain tank full, and pump drain, respectively. Then, the operation from the standby time to the pump drainage sequentially proceeds, and after the pump drainage operation returns to the standby state, the same operation is repeated.
First, as shown in FIG. 5A, when the toilet 2 is not used (stand A in FIG. 6), the water supply to the water supply tank 31 is stopped, and the water supply tank 31 has a high water level L1. The location is full.
As a result, the upper space 32 at this time is small, but since the airbag 10 is in a contracted state and its air storage volume is small, the airbag 10 is contained in the narrow upper space 32. At this time, the water level L of the drain tank 4 is at a low position, and the pump 5 is stopped.

Next, as shown in FIG. 5B, if the toilet 35 is used and the lever 35 of the water supply tank 31 is operated, the water 34 stored in the water supply tank 31 flows into the toilet 30 at once (see FIG. 5B). 6).
Since the water level L1 of the water supply tank 31 falls and the amount of the water 34 decreases, water supply by the water supply pipe 33 is started. The drainage 3 discharged from the toilet 30 is discharged to the drainage tank 4 through the inflow pipe 6.
Then, since the water level L of the drainage tank 4 gradually rises, the air in the drainage tank 4 moves to the airbag 10 through the communication pipe 14. As the air moves, the airbag 10 gradually inflates, and the air storage volume gradually increases. At this time, since the water level L of the water supply tank 31 is gradually lowered, the airbag 10 can be accommodated in the upper space 32.

Eventually, as shown in FIG. 5 (C), when the drainage discharged from the toilet 30 stops and the drainage tank 4 becomes full (reference C in FIG. 6), the volume of the upper space 8 becomes smaller, and the airbag 10 becomes inflated and the air storage volume increases.
At this time, since the water level L of the water supply tank 31 is at a low position, the airbag 10 is contained in the upper space 32. When the drain tank 4 becomes full in this way, the air between the drain tank 4 and the airbag 10 is stopped and the pump 5 is turned on to operate.
Thus, when the pump 5 is operated as shown in FIG. 5D, the drainage 3 stored in the drainage tank 4 is discharged out of the system through the discharge pipe 7 (reference numeral D in FIG. 6). . Then, the amount of the drainage 3 stored in the drainage tank 4 is gradually reduced, and the water level L is gradually lowered.
Since the volume of the upper space 8 gradually increases and the internal air pressure decreases, the air in the airbag 10 flows into the drainage tank 4 through the communication pipe 14. As a result, the airbag 10 is reduced and its air storage volume is reduced.

Since the water supply from the water supply pipe 33 to the water supply tank 31 is continuously performed from the time of toilet drainage, after the water 34 in the water supply tank 31 flows into the toilet 30, the water level L1 of the water supply tank 31 gradually increases. It rises.
Along with this, the volume of the upper space 32 is gradually reduced, but at the same time, the airbag 10 is gradually reduced and its air storage volume is reduced, so that the airbag 10 is always accommodated in the upper space 32. .
Eventually, when the water level L1 of the water supply tank 31 rises to a predetermined height position when the water is full, the water supply to the water supply tank 31 is automatically stopped.
In addition, although the case where water supply to the water supply tank 31 is continuously performed from the time of toilet drainage to the time of pump drainage is shown, the water supply to the water supply tank 31 is completed after the outflow of the water 34 from the water supply tank 31 to the toilet 30 is completed. May be started.
On the other hand, when the water level L of the drain tank 4 is lowered to a predetermined position, the pump 5 is automatically stopped. In this way, when the drainage operation by the pump 5 and the water supply operation to the water supply tank 31 are completed, the state returns to the standby state shown in FIG. 5A (symbol A in FIG. 6), and thereafter the same operation is performed. Will repeat.

When a sick person or an elderly person cannot go to the toilet far from the bed because he / she is bedridden, the toilet 2 can be easily used by installing the toilet 2 and the drainage pumping system 1d near the bed. is there.
In this case, piping work for the water supply pipe 33 and the discharge pipe 7 is necessary, but since the ventilation pipe is not necessary, the entire piping work is facilitated. The toilet 2 in this case is preferably a portable toilet that can be installed and moved, but may be a stationary toilet that is not moved.
For example, when an existing office building is changed to a housing complex, the use of the toilet 2 and the drainage pumping system 1d of this embodiment makes it easy to design and construct a pipe because an air duct is unnecessary.

As described above, in the drainage pumping system 1, 1a to 1d of the present invention, since the air storage portion is provided in the vicinity of the drainage tank or directly, the entire drainage pumping system can be installed near the water supply / drainage facility. , Installation work and maintenance work become easier.
Further, since the drainage tank 4 and the air storage portions 10, 10a to 10c are communicated so that the air can freely move between the two, even if the air pressure in the drainage tank 4 is positive, it is negative. But it can respond.

The embodiments of the present invention (including various modifications; the same applies hereinafter) have been described above, but the present invention is not limited to the above-described embodiments, and various modifications and additions can be made within the scope of the present invention. Etc. are possible.
In the drawings, the same reference numerals denote the same or corresponding parts.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a system in which wastewater discharged from a water supply / drainage facility such as a toilet or bath in an apartment house is stored in a drainage tank and pumped by a pump.

FIG. 1 to FIG. 6 are diagrams showing an embodiment of the present invention, and FIG. 1 is a flowchart of a drainage pressure feeding system according to one embodiment. It is a flowchart of the drainage pumping system concerning the 1st modification in the said Example. It is a flowchart of the drainage pumping system concerning the 2nd modification of the said Example. It is a flowchart of the drainage pumping system concerning the 3rd modification of the said Example. It is a flowchart of the drainage pressure feeding system in case a water supply / drainage equipment is a toilet. It is explanatory drawing which shows operation | movement of the waste_water | drain pressure feeding system shown in FIG. It is a flowchart which shows the conventional various drainage pumping system.

Explanation of symbols

1,1a-1d Drainage pumping system 2 Toilet (water supply and drainage equipment)
3 Drainage 4 Drainage tank 5 Pump 8 Upper space of drainage tank 10 Air bag (air storage part, face body structure)
10a, 10b Membrane structure (air storage part, face body structure)
10c Air storage section 14 Communication pipe 16 Partition membrane 20 Cylinder 21 Piston 30 Toilet bowl 31 Water supply tank 32 Upper space of water supply tank A1 Air L Water level of drainage tank

Claims (1)

A drainage pumping system in which drainage discharged from a water supply / drainage facility installed inside a building is temporarily stored in a sealed drainage tank and then pumped by a pump.
The upper space of the drainage tank communicates with an air storage section sealed so that the air storage volume can be freely changed,
As the water level of the drainage in the drainage tank changes, the air moves between the drainage tank and the air storage part, and the air storage part freely deforms in conjunction with the movement of the air,
The water supply and drainage facility is a toilet with a water supply tank for supplying water to the toilet.
A drainage pressure feeding system characterized in that an expandable / contractible face body structure constituting an air storage portion is installed in a water supply tank, and the face body structure and the upper space of the drainage tank are connected by a communication pipe.

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