CN111501946A - Sewage regulation and storage device and method based on gravity water inflow and air pressure water evacuation and water outflow - Google Patents

Abstract

The invention provides a sewage regulation and storage device based on gravity water intake and air pressure discharge water, comprising: a biochemical part; an interception part, which is respectively connected with the biochemical part and the confluence pipe; a buffer part, which is in communication with the interception part; and The external atmospheric pressure is connected; the air source is connected to the buffer part; when the buffer part enters the water, the sewage flows into the storage space through the storage space under the action of gravity; Sewage is discharged to the storage space. The present invention effectively avoids the structural design that the sewage input from the biochemical department directly enters the confluence pipe for output, which is very easy to cause serious pollution of natural water bodies in rainy days, or excessive treatment pressure of sewage treatment facilities, waste of resources and other technologies. It has the advantages of simple structure, convenient operation and wide applicability.

Description

A sewage regulation and storage device and method based on gravity water inlet and air pressure emptying water

technical field

The invention belongs to the technical field of drainage, and in particular relates to a sewage regulation and storage device and method based on gravity water inlet and air pressure emptying water outlet.

Background technique

The urban pipe network is divided into a combined drainage system and a split drainage system, which are used to discharge sewage (such as domestic sewage) in the unit area. In the existing discharge process, the sewage in the unit area is first transported to the sewage branch pipe. The septic tank is collected and chemically treated (such as chemical decomposition in the septic tank), so that the treated upper layer liquid flows into the municipal pipeline through the confluence pipe for subsequent treatment.

However, this kind of discharge method makes the sewage output from the septic tank directly enter the merging pipe and mix with the rainwater when the sewage is discharged. In rainy days, if the mixed water of the rainwater and sewage is directly discharged into the natural water body It is very easy to cause serious pollution of the receiving water body. If it is directly discharged into the sewage treatment facility for treatment, a large amount of clean rainwater will enter the sewage treatment facility for unnecessary treatment in rainy days, resulting in waste of resources.

It can be seen that the structural design in the prior art that the sewage input from the septic tank directly enters the confluence pipe for output, it is easy to cause serious pollution of natural water bodies in rainy days, or the treatment pressure of sewage treatment facilities is too large, and resources are wasted, etc. Technical flaws.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is the structural design in the prior art that the sewage input from the biochemical department directly enters the confluence pipe for output, and it is very easy to cause serious pollution of the natural water body in rainy days, or the treatment pressure of the sewage treatment facility is too large, Technical defects such as waste of resources.

In order to solve the above-mentioned technical problems, the present invention provides a sewage regulation and storage device based on gravity water intake and air pressure emptying of water. The storage space for storing sewage is respectively communicated with the interception part and the external atmospheric pressure; the bottom elevation at the part where the buffer part communicates with the interception part is lower than that at the part where the interception part communicates with the confluence pipe. Bottom elevation; air source, communicated with the buffer part; when the buffer part enters the water, the sewage in the interception part flows into the storage space through the storage space under the action of gravity, and the buffer part flows into the storage space through the storage space. When the water comes out, the air pressure is charged into the buffer part from the air source, and the sewage in the storage space is discharged to the storage space under the action of the air pressure.

Optionally, it also includes: an exhaust pipe opened in the buffer part; a first valve is provided at the exhaust pipe to communicate the air source and the buffer part; in the exhaust pipe A second valve is arranged at the position to communicate the buffer portion with the external atmospheric pressure.

Optionally, the interception part includes: an interception inlet, which is communicated with the water outlet of the biochemical part for receiving sewage in the receiving unit area; a first interception outlet and a second interception outlet, the first interception outlet and the confluence The pipes communicate with each other, and the second shut-off outlet communicates with the buffer portion.

Optionally, the top elevation of the buffer portion is lower than the bottom elevation of the interception inlet.

Optionally, it further includes: a first switch arranged at the first shut-off outlet; and a second switch arranged at the second shut-off outlet.

Optionally, the buffer part, the biochemical part and the interception part are of a split structure; the biochemical part is a septic tank; the buffer part is one of a storage tank, a box culvert or a pipe culvert ; The interception part is one of a diversion well, an interception well, an abandoned well, a buffer corridor or an installation well.

Optionally, the buffer part, the biochemical part and the interception part are integrated structures; the biochemical part is a septic tank, and the buffer part and the interception part are two independent parts in the biochemical part. area.

Optionally, the biochemical part and the interception part are of an integrated structure; the buffer part and the integrated structure are distributed in a split type; the buffer part is a storage tank, a box culvert, a pipe culvert or a buffer gallery One of the tracts; the biochemical section is a septic tank, and the interception section is an independent area within the biochemical section.

Optionally, the buffer part and the interception part are an integrated structure; the biochemical part and the integrated structure are distributed in a split type, the biochemical part is a septic tank; the buffer part is a regulating and storage tank , box culvert, pipe culvert or buffer corridor.

Optionally, it also includes: an exhaust pipe opened on the biochemical part; a first valve is provided at the exhaust pipe to communicate the air source and the buffer part; A second valve is arranged at the pipe to communicate the buffer portion with the external atmospheric pressure.

Optionally, it also includes: an elbow, one end of the elbow is communicated with the second shut-off outlet, the other end of the elbow is communicated with the bottom of the buffer part, and one end of the elbow is communicated with the bottom of the buffer part. Height, lower than the height of the other end of the elbow.

In a second aspect, there is also provided a sewage regulation and storage method based on gravity water intake and air pressure discharge water, which is applied to the above-mentioned device. , then the first switch and the second switch are controlled to open, the first valve is opened and the second valve is closed, and air is filled into the buffer part; The confluence pipe is discharged; the identification instruction of whether the buffer part needs to store water is received; if so, the first switch is closed, the second switch is opened, the first valve is closed, and the second valve is opened; the interception part The sewage flows into the buffer under the action of gravity.

Beneficial effects:

In the sewage regulation and storage device provided by the present invention, when sewage and rainwater need to be separated in rainy days, the sewage output by the biochemical part flows into the buffer part from the interception part under the action of its own gravity for storage, so that only rainwater exists in the confluence pipe, and when When sewage output is required, air is filled into the buffer part through the air source, so that the stored sewage flows into the interception part under the action of air pressure, and is discharged from the confluence pipe, effectively avoiding the technical problem of sewage input from the biochemical part. The structural design that directly enters the confluence pipe for output has technical defects such as excessive pollution of natural water bodies in rainy days, or excessive treatment pressure of sewage treatment facilities, waste of resources and other technical defects, which can achieve the adjustment and storage of sewage when sewage discharge is not required. It has the characteristics of simple structure, convenient operation and wide applicability.

The above description is only an overview of the technical solutions of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand , the following specific embodiments of the present invention are given.

Description of drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of a sewage regulation and storage device provided by an embodiment of the present invention;

Fig. 2 is another structural schematic diagram of the sewage regulation and storage device provided by the embodiment of the present invention;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is another structural schematic diagram of the sewage regulation and storage device provided by the embodiment of the present invention;

Fig. 5 is another structural schematic diagram of the sewage regulation and storage device provided by the embodiment of the present invention;

Fig. 6 is the top view of Fig. 5;

Fig. 7 is the structural representation of the elbow in Fig. 1;

Fig. 8 is the structural representation of the elbow in Fig. 2;

FIG. 9 is a schematic structural diagram when the buffer portion is located directly below the blocking portion according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present specification. Obviously, the described embodiments are only a part of the embodiments of the present specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention; wherein the keyword "and/or" involved in this implementation means and or both In other words, A and/or B mentioned in the embodiments of this specification represent two situations of A and B, A or B, and describe the three states that A and B exist, such as A and/or B, means: only include A but not B; only include B but not A; include A and B.

Meanwhile, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a co-existence of an intervening component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a co-existing centered component. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present specification are only for the purpose of illustration and are not intended to limit the present invention.

It should be noted that, in order to describe this specification in more detail, so that those skilled in the art can understand this specification more clearly and clearly, and then support the technical problems to be solved by this specification and the corresponding technical effects that can be achieved, Before introducing this manual, the following explanations are given for the terms and nouns involved:

"Unit area" refers to areas where sewage exists, such as residential areas, schools, office buildings, shopping malls, etc.; sewage branch pipes, "confluence pipes", are used in the unit area pipelines to transport rainwater, sewage or mixed water of rainwater and sewage Pipelines; "Biochemical Department" refers to the collection and chemical treatment of sewage transmitted by sewage branch pipes in the unit area, which can be similar to septic tanks and other tank structures with treatment functions; "bottom elevation" refers to a certain The elevation value of the bottom layer of each part and component. "Top elevation" refers to the elevation value of the top level of a certain part and component.

When the sewage regulation and storage device provided in the embodiments of this specification is applied to the specific application scenario of a drainage system, the sewage regulation and storage device can realize the regulation and storage of sewage based on the air pressure input by the vacuum pump and the gravity of the sewage, and also That is, the discharge and storage of sewage, the drainage system may include sewage branch pipes, biochemical parts 20, confluence pipes 30, municipal pipelines, etc. The sewage branch pipes are connected to the biochemical part to centrally transport sewage in the unit area to the biochemical part.

Example 1

Specifically, please refer to FIGS. 1-6 . In the embodiment of the sewage regulation and storage device, the sewage regulation and storage device at least includes a biochemical part 20 , a shut-off part 10 , a buffer part 40 and a gas source 120 .

Wherein, the intercepting part 10 has a storage space 101 which can be used to store sewage, and is connected with the biochemical part 20 and the confluence pipe 30 respectively; the size and volume of the storage space 101 are not limited in the present invention, and can be based on actual operation requirements. Design flexibility. Similarly, the buffer part 40 also has a storage space 401 that can be used to store the above-mentioned sewage, and is communicated with the interception part 10; the size and volume of the storage space 401 are not limited in the present invention, and can be flexibly designed according to the actual operation requirements. Can. The interception part 10 has a storage space 101 for receiving sewage inside, and is communicated with the biochemical part 20 and the confluence pipe 30 respectively; wherein, the bottom elevation of the part where the buffer part 40 communicates with the interception part 10 is lower than The bottom elevation of the part where the interception part 10 and the confluence pipe 30 are connected; here, the part where the buffer part 40 and the interception part 10 are connected may refer to the conveyance of sewage from the buffer part 40 to the interception part 10 or from the interception part 10 to the buffer part 40 at the site where sewage is transported. The air source 120 is a device for filling the buffer portion 40 with compressed gas, so as to form air pressure in the buffer portion 40 , and then squeeze the sewage in the buffer portion 40 to flow to the intercepting portion 10 .

When the buffer part 40 needs to enter water, the sewage transported by the biochemical part 20 to the interception part 10 flows into the buffer part 40 under the action of its own gravity and is stored; Compressed gas is charged to form an air pressure in the buffer part 40 , and the sewage flow in the buffer part 40 is squeezed into the storage space 101 , and discharged through the merging pipe 30 .

As an embodiment of the interception part 10 , it may include a interception inlet 102 , a first interception outlet 103 and a second interception outlet 104 , the interception inlet 102 is used for connecting with the biochemical part, and is used for sewage that needs to be regulated and stored. An input interface is provided, the first interception outlet 103 is used to connect with the confluence pipe 30 , and is used to provide an output interface for sewage that needs to be adjusted and stored, and the second interception outlet 104 is connected to the buffer part 40 .

As an embodiment of the buffer portion 40, it may include: a buffer port 402, the buffer port 402 is communicated with the second interception outlet 104, and the bottom elevation of the buffer port 402 is lower than that of the first interception outlet 103, so that when the need arises When the sewage input by the sewage input mechanism is adjusted and stored, the sewage in the interception part 10 flows into the buffer part 40 through the buffer port 402 and the second interception outlet 104 for storage, and when the sewage in the buffer part 40 needs to be discharged, The sewage stored in the buffer part 40 only needs to flow into the interception part 10 through the buffer port 402 and be discharged into the merging pipe 30 through the first interception outlet 103 .

As an embodiment of the gas source 120, an exhaust pipe 403 can be started at the top of the buffer part 40 or the biochemical part 20, and a first valve 406 and a second valve 407 are arranged in parallel at the exhaust pipe 403; And through the first valve 406, the air source 120 is communicated with the buffer portion 40, and the second valve 407 is used to communicate the buffer portion 40 with the outside atmospheric pressure, so that when the buffer portion 40 needs to be filled with water , close the first valve 406 and open the second valve 407, so that the sewage in the interception part 10 flows into the buffer part 40 under the action of gravity. By forming air pressure in the buffer part 40 , the sewage flow in the buffer part 40 is squeezed and flows into the storage space 101 , and is discharged from the confluence pipe 30 . Among them, in order to make the sewage transported by the biochemical part smoothly flow into the buffer part through the interception part under the action of gravity when the buffer part enters the water, as a preferred solution, the top elevation of the buffer part 40 is lower than the bottom of the interception inlet 102 elevation.

It should be noted that, for the above-mentioned interception inlet 102, first interception outlet 103, second interception outlet 104, and buffer port 402, the present invention does not limit the size of its caliber and the orientation of each opening on its carrier, which can be practically The operation needs can be designed flexibly, as long as the sewage can be communicated in the biochemical part 20, the interception part 10 and the buffer part 40. Similarly, for the number of buffer parts 40 and the corresponding number of buffer ports 402, The embodiment of this specification is not limited, and it can be flexibly designed according to the actual water storage capacity. It is not considered to be within the scope of protection of the present invention.

As an application environment of the embodiments of this specification, for the above-mentioned "sewage that needs to be adjusted and stored", the adjustment and storage nodes can be set according to the conditions of rainfall and no rainfall, for example, when there is rainfall If the sewage output by the biochemical department directly enters the confluence pipe and is mixed with the rainwater, the mixed water of the rainwater and sewage is very likely to be seriously polluted when the mixed water of the rainwater and sewage is directly discharged into the natural water body. When it is sent to the sewage treatment facility for treatment, a large amount of relatively clean rainwater in rainy days will enter the sewage treatment facility for unnecessary treatment, resulting in a waste of resources. Therefore, when there is rainfall, the sewage output from the biochemical unit 20 can be adjusted and stored by the sewage adjusting and storage device provided in the embodiment of this specification, and the sewage adjustment and storage can be stopped when there is no rainfall, that is, at this time, the biochemical unit 20 The output sewage is directly input to the confluence pipe 30;

That is, the interception inlet 102 of the interception part 10 is communicated with the water outlet of the biochemical part 20, so that the sewage in the biochemical part 20 first enters the interception part 10 before entering the confluence pipe, and the interception part 10 and the buffer part 40 are communicated with each other. In this way, when the sewage needs to be adjusted and stored during rainfall, only the sewage output from the biochemical part 20 needs to flow into the buffer part 40 through the buffer port 402 for storage, so that there is only rainwater in the confluence pipe 30, and when the sewage needs to be output on sunny days , it is only necessary that the sewage stored in the buffer part 40 flows into the confluence pipe 30 through the buffer port 402 and the first interception outlet 103 in sequence, which effectively avoids the problem that the sewage input from the biochemical part 20 directly enters the confluence pipe in the prior art. The structural design to be exported has technical defects such as serious pollution of natural water bodies in rainy days, or excessive treatment pressure of sewage treatment facilities, waste of resources and other technical defects, which can achieve the technical effect of regulating and storing sewage when sewage discharge is not required. It has the characteristics of simple structure, convenient operation and wide applicability.

As another application environment of the embodiments of this specification, for the above-mentioned "sewage that needs to be adjusted and stored", the adjustment and storage nodes can be set according to the magnitude of the rainfall for adjustment and storage. For example, when the rainfall is relatively large, If the sewage output by the biochemical department directly enters the confluence pipe and is mixed with the rainwater, the mixed water of the rainwater and sewage is very likely to be seriously polluted when the mixed water of the rainwater and sewage is directly discharged into the natural water body. During the treatment of sewage treatment facilities, a large amount of relatively clean rainwater in rainy days will enter the sewage treatment facilities for unnecessary treatment, resulting in waste of resources. Therefore, when the rainfall is relatively large, the sewage output from the biochemical unit 20 can be adjusted and stored by the sewage regulation and storage device provided in the embodiment of this specification, and the sewage regulation and storage can be stopped when the rainfall is relatively small. The sewage output from the biochemical unit 20 is directly input to the confluence pipe 30 .

That is, the interception inlet 102 of the interception part 10 communicates with the water outlet of the biochemical part 20, so that the sewage in the biochemical part 20 enters the interception part 10 before entering the confluence pipe, and passes through the buffer opening 402 of the buffer part 40. The interception part 10 and the buffer part 40 are connected, so that when the rainfall is relatively large and the sewage needs to be adjusted and stored, only the sewage output by the biochemical part 20 needs to flow into the buffer part 40 through the buffer port 402 for storage, so that the confluence pipe 30 is stored in the buffer part 40 . There is only rainwater when the rainfall is relatively large, and when the output of sewage is required on sunny days or when the rainfall is relatively small, the sewage stored in the buffer portion 40 only needs to flow into the merging pipe 30 through the buffer port 402 and the first interception outlet 103 in sequence. Yes, it can effectively avoid the structural design that the sewage input from the biochemical section 20 directly enters the confluence pipe for output, which is very likely to cause serious pollution of natural water bodies when the rainfall is relatively large, or the treatment pressure of sewage treatment facilities is too large. Waste and other technical defects can achieve the technical effect of regulating and storing sewage when sewage discharge is not required, and has the characteristics of simple structure, convenient operation and wide applicability.

Those skilled in the art can understand that the present invention does not limit the amount of rainfall, and the threshold value of rainfall parameters can be set according to actual operation requirements.

As another application environment of the embodiments of this specification, for the above-mentioned "sewage that needs to be adjusted and stored", it can be based on the liquid level height in the buffer part 40, by pre-setting the liquid level interval threshold, and adjusting the buffer The liquid level height in the part 40 is monitored in real time, so that when the liquid level height is lower than the minimum value of the threshold value of the interval, it is considered that the sewage needs to be adjusted and stored, that is, the sewage output by the biochemical part 20 flows into the buffer part 40 for storage. . When the height of the liquid level is higher than the maximum value of the threshold value in the interval, the regulation and storage of sewage can be stopped, that is, the sewage output by the biochemical unit 20 is directly input into the confluence pipe 30 at this time.

That is, the interception inlet 102 of the interception part 10 communicates with the water outlet of the biochemical part 20, so that the sewage in the biochemical part 20 enters the interception part 10 before entering the confluence pipe, and passes through the buffer opening 402 of the buffer part 40. The interception part 10 and the buffer part 40 are connected, so that when the liquid level is lower than the minimum value of the threshold value of the interval, it means that the storage space of the buffer part 10 is very large at this time. The sewage output from the biochemical part 20 only needs to flow into the buffer part 40 through the buffer port 402 for storage, so that the sewage can be stored in the buffer part 40 when the liquid level is relatively low, and when the liquid level is higher than this When the interval threshold is the maximum value, it means that the sewage stored in the buffer part 10 is about to overflow. At this time, only the sewage stored in the buffer part 40 needs to flow into the confluence pipe 30 through the buffer port 402 and the first interception outlet 103 in sequence. That is, while effectively reducing the conveying pressure of the confluence pipe, or technical defects such as excessive treatment pressure of sewage treatment facilities and waste of resources, etc., it can also effectively prevent the overflow of sewage in the buffer portion 40, and has high safety. Features.

As another application environment of the embodiment of this specification, the adjustment and storage nodes can be set according to whether the sewage treatment plant has surplus capacity. For example, when the sewage treatment plant has no surplus capacity, if the sewage output by the biochemical department directly After entering the confluence pipe, it is directly transported to the sewage treatment plant during the non-rainfall period, or mixed with rainwater during the rainy period and then transported to the sewage treatment plant. Therefore, at this time, the sewage output from the biochemical unit 20 can be adjusted and stored by the sewage adjustment and storage device provided in the embodiment of this specification, and the sewage adjustment can be stopped when the sewage treatment plant has surplus capacity. storage, that is, the sewage output from the biochemical unit 20 is directly input to the merging pipe 30 at this time.

It should be noted that the above descriptions for the above-mentioned four application environments of the sewage regulation and storage device provided in the embodiments of this specification in the drainage system are only examples of the actual application of the sewage regulation and storage device, and do not constitute a use restriction. Personnel can also understand that the sewage regulation and storage device provided in the embodiment of this specification can also be applied to the drainage system in addition to the above four application environments, other application environments that need to be used for the storage, regulation and storage of sewage, or the above four application environments. The combination includes other application scenarios other than the specific application scenario of the drainage system, which is not limited by the present invention. In other words, as long as it is an application environment or application scenario that can store sewage and achieve the technical effect of regulating and storing sewage, it is applicable to the present invention and falls within the protection scope of the present invention.

As an implementation in the embodiments of this specification, the buffer part 40, the biochemical part 20 and the shut-off part 10 may be a split structure as shown in FIG. 1, and the biochemical part 20 may be a septic tank; The buffer part 40 is one of a storage tank, a box culvert, a pipe culvert or a buffer corridor; the interception part 10 can also be one of a diversion well, an interception well, an abandonment well, a buffer corridor or an installation well.

Specifically, in this embodiment, the buffer portion 40 may include: a buffer port 402 , the buffer port 402 communicates with the shut-off portion 10 through the second shut-off outlet 104 , and the buffer port 402 is in communication with the shut-off portion 10 . The bottom elevation is lower than the bottom elevation of the first interception outlet 103 . When the buffer part 40 needs to enter water, the sewage transported by the biochemical part 20 to the interception part 10 flows into the buffer part 40 under the action of its own gravity and is stored; Compressed gas is charged to form an air pressure in the buffer part 40 , and the sewage flow in the buffer part 40 is squeezed into the storage space 101 , and discharged through the merging pipe 30 . It should be emphasized that the bottom elevation of the buffer port 402 is lower than the bottom elevation of the first interception outlet 103, and the buffer port 402 in the interception portion 10 is as close to the bottom as possible.

As a preference, please continue to refer to FIGS. 7-8 , an elbow 408 is added at the bottom of the interception portion 10 , and an open end of the elbow 408 is used as a buffer port 402 to communicate with the interception portion 10 . The other open end communicates with the buffer portion 40, and the bottom elevation of the end communicated with the interception portion 10 is lower than the bottom elevation of the other end communicated with the buffer portion 40, so that enough sewage in the interception portion can be discharged. It flows into the buffer part 40 , and at the same time, it is convenient to collect and clean the sludge and residues at the buffer port 402 .

As another implementation in the embodiments of this specification, the buffer portion 40 and the shut-off portion 10 as shown in FIGS. 2-3 may also be an integral structure. The biochemical part 20 and the integrated structure are distributed in separate parts.

Specifically, in this embodiment, the biochemical part 20 is a septic tank; the buffer part 40 is one of a storage tank, a box culvert, a pipe culvert or a buffer corridor; For an independent area, it can be understood that there are two areas in the buffer part 40 as shown in FIG. 2-3 at this time, the left area is the interception part 10, and the right area is the buffer part 40, the two are independent of each other, and pass through the buffer port and The second shut-off outlet is communicated. The principle that the sewage flows into the buffer part and discharges from the buffer part is similar to the principle of the split structure shown in FIG. 1 above, and will not be repeated here. In this embodiment, the bottom elevation of the same buffer port 402 It is lower than the bottom elevation of the first interception outlet 103, and the buffer port 402 in the interception portion 10 is as close to its bottom as possible, so that enough sewage in the interception portion can flow into the buffer portion 40 under the action of gravity. middle.

As another embodiment in the embodiments of the present specification, the biochemical part 20 and the shut-off part 10 as shown in FIG. 4 may also be an integral structure. The buffer portion 40 and the integrated structure are distributed in a separate manner. It can be understood that there are two areas in the biochemical section 20 as shown in FIG. 4 , the left section is the biochemical section 20 and the right section is the interception section 10 , which are independent of each other and communicated through the interception inlet. The principle that the sewage flows into the buffer part and discharges from the buffer part is similar to the principle in the structure shown in the above-mentioned Figures 1-3, and will not be repeated here. In this embodiment, the bottom elevation of the same buffer port 402 It is lower than the bottom elevation of the first interception outlet 103, and the buffer port 402 in the interception portion 10 is as close to its bottom as possible, so that enough sewage in the interception portion can flow into the buffer portion 40 under the action of gravity. middle.

As another implementation of the embodiments of this specification, the buffer part 40 and the shut-off part 10 may be an integrated structure as shown in FIGS. 5-6 , the biochemical part 20 is a septic tank, and the buffer part 40 and the shut-off part 10 are two independent areas within the biochemical part 20 , both of which are inside the biochemical part 20 . The left area is the biochemical part 20, the right area is the interception part 10, and the middle area is the buffer part 40, and the three are independent of each other. The principle of the structure shown is the same, and will not be repeated here. In this embodiment, the bottom elevation of the same buffer port 402 is lower than the bottom elevation of the first interception outlet 103, and the buffer port 402 is at the interception portion. The closer the middle 10 is to its bottom, the better, so that enough sewage in the interception part can flow into the buffer part 40 under the action of gravity.

It should be noted that, the present invention does not limit which structure the buffer part 40 , the biochemical part 20 and the intercepting part 10 provided in the embodiments of the present specification belong to. In other words, any of the above-mentioned structures, or other structural forms after simple transformation, as long as the pressure difference can be established between the buffer part and the interception part, so that the sewage enters the buffer part 40 for storage under the action of gravity, In addition, when sewage discharge is required, air pressure is charged into the buffer part to squeeze the technical effect of sewage discharge, which are all applicable to the present invention and are also within the protection scope of the present invention.

Further, please continue to refer to FIG. 9 , in order to allow the sewage flowing into the intercepting part 10 to flow into the buffer part 40 smoothly and quickly under the action of its own gravity, the intercepting part 10 may also have a T-shaped structure. Specifically, the interception inlet 102 and the first interception outlet 103 constitute a transverse pipe with a T-shaped structure. It can be understood that the interception inlet 102 as shown in FIG. 9 is the left pipe of the T-shaped structure, and the first interception outlet 103 is On the right pipe of the T-shaped structure, the second interception outlet 104 constitutes a vertical pipe of the T-shaped structure, thereby forming the interception portion 10 of the T-shaped structure, and the space for sewage circulation inside the pipe constitutes the receiving space 101 .

In this structure, the buffer portion 40 is located below the interception portion 10 and is vertically inserted into the storage space 401 through the second interception outlet 104 to connect the buffer portion 40 and the interception portion 10 and connect the buffer portion 40 to the interception portion 10 . The vertical height difference between the two is achieved, so that when sewage flows into the storage space 101 from the interception inlet 102, it can directly flow into the storage space 401 through the second interception outlet 104 under its own gravity for storage.

Moreover, in order to be able to centrally clean the sludge and residues in the buffer space 401 on the one hand, and also to avoid discharging more sewage when discharging sewage to the storage space 401 , as a preferred method, the buffer part 40 A groove 411 recessed downward relative to the storage space 401 is provided at the bottom of the , and the second shut-off outlet 104 is placed in the groove 411 . It can be understood that the bottom elevation of the groove 411 is lower than the bottom elevation of the rest of the buffer portion 40 except the groove 411, so that when the sewage is discharged, it will flow into the groove 411 under the action of its own gravity, Then, it is convenient to discharge, and at the same time, the sludge and residue in the storage space are concentrated at the groove 411 for cleaning along with the flow of sewage.

As an implementation of the sewage circulation in the embodiment of this specification, the sewage regulation and storage device further includes: a first switch 121 disposed at the first interception outlet 103 ; a first switch 121 disposed at the second interception outlet 104 and the buffer The second switch 122 at the mouth-connected part, wherein the first switch 121 and the second switch 122 can be any one of a gate, a weir gate, a valve, a gate valve, an air bag, an air pillow, a pipe pinch valve or a flexible shut-off device , the present invention is not limited, as long as the mechanism that can realize the conduction or cut-off of the inlet and outlet is applicable to the present invention, it is also within the protection scope of the present invention.

Furthermore, as a real-time method for controlling the opening and closing of the first switch 121 , the second switch 122 , the first valve 406 and/or the second valve 407 in the embodiment of this specification, the sewage regulation and storage device also Can include:

The first liquid level gauge is arranged in the buffer part 10 and is used for monitoring the liquid level data of the sewage in the buffer part 10;

The controller communicates with the first switch 121 , the second switch 122 , the first valve 406 , the second valve 407 and the first liquid level gauge respectively, so as to receive the liquid level data and adjust the first liquid level data according to the liquid level data. The switch 121 and the second switch 122 are switched on and off; wherein, the controller includes a memory and a processor, and the memory stores a computer program, and when the program is executed by the processor, the following steps can be implemented:

Comparing the liquid level data with a standard liquid level interval, the standard liquid level interval includes an interval minimum liquid level value and an interval maximum liquid level value;

If the liquid level data is less than or equal to the minimum liquid level value in the interval, control the first switch to close, the second switch to open, the first valve 406 to close and the second valve 407 to open;

If the liquid level data is greater than or equal to the maximum liquid level value in the interval, the first switch is controlled to open, the first valve 406 is opened and the second valve 407 is closed, and the buffer is filled with air pressure.

In this embodiment, the interception inlet 102 of the interception part 10 is communicated with the water outlet of the biochemical part 20 , so that the sewage in the biochemical part 20 first enters the interception part 10 before entering the confluence pipe, and passes through the buffer of the buffer part 40 The port 402 realizes the communication between the blocking part 10 and the buffer part 40, so that when the liquid level is lower than the minimum value of the threshold value in this interval, it means that the storage space of the buffer part 10 is very large at this time. In order to reduce the conveying pressure of the confluence pipe, As well as the treatment pressure of the sewage treatment facility, etc., only the sewage output from the biochemical part 20 flows into the buffer part 40 through the buffer port 402 for storage, so that the sewage can be stored in the buffer part 40 when the liquid level is relatively low, and when the liquid level is relatively low. When the height is higher than the maximum value of the threshold value of the interval, it means that the sewage stored in the buffer part 10 is about to overflow at this time. At this time, only the sewage stored in the buffer part 40 needs to flow in through the buffer port 402 and the first interception outlet 103 in sequence. The confluence pipe 30 is sufficient, which can effectively reduce the conveying pressure of the confluence pipe, or technical defects such as excessive treatment pressure of sewage treatment facilities and waste of resources, etc., and can also effectively prevent the overflow of sewage in the buffer portion 40. Features of high security.

Further, as another real-time method for controlling the opening and closing of the first switch 121, the second switch 122, the first valve 406 and/or the second valve 407 in the embodiment of this specification, the sewage regulating and storage device Also includes:

The first rain gauge, which communicates with the above-mentioned controller, is used to monitor whether it is currently a rainy period;

When the program stored in the above-mentioned memory is executed by the processor, the following steps can also be implemented:

If the current state of rainfall, control the first switch to be closed, the second switch to be opened, the first valve to be closed, and the second valve to be opened;

If it is not raining at present, the first switch is controlled to be turned on, the first valve is turned on and the second valve is turned off, and air pressure is charged into the buffer part.

In this embodiment, the interception inlet 102 of the interception part 10 is communicated with the water outlet of the biochemical part 20 , so that the sewage in the biochemical part 20 first enters the interception part 10 before entering the confluence pipe, and passes through the buffer of the buffer part 40 The port 402 is communicated with the second interception outlet 104 to realize the communication between the interception part 10 and the buffer part 40, so that when the sewage needs to be adjusted and stored during rainfall, only the sewage output from the biochemical part 20 flows in through the buffer port 402 Storage is performed in the buffer part 40, so that only rainwater exists in the junction pipe 30, and when the sewage needs to be output on a sunny day, the sewage stored in the buffer part 40 only needs to flow into the junction pipe 30 through the buffer port 402 and the first interception outlet 103 in sequence. That is, it can effectively avoid the existing structural design that the sewage input from the biochemical unit 20 directly enters the confluence pipe for output. In rainy days, it is easy to cause serious pollution of the natural water body, or the treatment pressure of the sewage treatment facility is too large, Technical defects such as waste of resources can achieve the technical effect of regulating and storing sewage when sewage discharge is not required, and has the characteristics of simple structure, convenient operation and wide applicability.

Furthermore, as another real-time method for controlling the opening and closing of the first switch 121 , the second switch 122 , the first valve 406 and/or the second valve 407 in the embodiment of this specification, the sewage regulation and storage device Also includes:

The second rain gauge, which communicates with the above-mentioned controller, is used to monitor the rainfall during the current rainfall period;

When the program stored in the above-mentioned memory is executed by the processor, the following steps can also be implemented:

If the current rainfall is less than the preset basic threshold of rainfall, the first switch is controlled to open, the first valve is opened and the second valve is closed, and the buffer is filled with air pressure;

If the current rainfall is greater than the preset rainfall basic threshold, controlling the first switch to close, the second switch to open, the first valve to close, and the second valve to open;

In this embodiment, the interception inlet 102 of the interception part 10 is communicated with the water outlet of the biochemical part 20 , so that the sewage in the biochemical part 20 first enters the interception part 10 before entering the confluence pipe, and passes through the buffer of the buffer part 40 The port 402 is communicated with the second interception outlet 104 to realize the communication between the interception part 10 and the buffer part 40, so that when the rainfall is relatively large and the sewage needs to be adjusted and stored, only the sewage output by the biochemical part 20 needs to pass through the buffer port 402 flows into the buffer part 40 for storage, so that there is only rainwater in the merging pipe 30 when the rainfall is relatively large, and when the rainfall is relatively small and requires sewage to be output, only the sewage stored in the buffer part 40 needs to pass through the buffer port 402 in turn. The first interception outlet 103 can flow into the confluence pipe 30, which effectively avoids the fact that the sewage input from the biochemical section 20 directly enters the confluence pipe for output, which is easy to cause serious natural water bodies when the rainfall is relatively large. Pollution, or technical defects such as excessive treatment pressure of sewage treatment facilities and waste of resources, can achieve the technical effect of regulating and storing sewage when sewage discharge is not required, and has the characteristics of simple structure, convenient operation and wide applicability.

Furthermore, as another real-time method for controlling the opening and closing of the first switch 121 , the second switch 122 , the first valve 406 and/or the second valve 407 in the embodiment of this specification, the sewage regulation and storage device Can also include:

The second liquid level gauge is set in the sewage treatment plant and used to monitor the liquid level data of the sewage in the sewage treatment plant;

The controller communicates with the first switch 121, the second switch 122, the first valve 406, the second valve 407, and the second liquid level gauge, respectively, to receive liquid level data and adjust the switches and valves according to the liquid level data. switch on and off; wherein, the controller includes a memory and a processor, the memory stores a computer program, and the program can realize the following steps when executed by the processor:

Comparing the liquid level data with a standard liquid level interval, the standard liquid level interval includes an interval minimum liquid level value and an interval maximum liquid level value;

If the liquid level data is greater than the minimum liquid level value in the interval, control the first switch to close, the second switch to open, the first valve to close, and the second valve to open;

If the liquid level data is less than the maximum liquid level value in the interval, the first switch is controlled to be turned on, the first valve is turned on and the second valve is turned off, and the buffer is filled with gas.

In this embodiment, the interception inlet 102 of the interception part 10 is communicated with the water outlet of the biochemical part 20 , so that the sewage in the biochemical part 20 first enters the interception part 10 before entering the confluence pipe, and passes through the buffer of the buffer part 40 The port 402 is communicated with the second interception outlet 104 to realize the communication between the interception part 10 and the buffer part 40, so that when the liquid level is lower than the minimum value of the threshold value of the interval, it means that the sewage treatment plant still has surplus treatment at this time. At this time, the sewage stored in the buffer part 40 only needs to flow into the confluence pipe 30 through the buffer port 402 and the first interception outlet 103 in sequence, and the treatment capacity of the sewage treatment plant can be reasonably and effectively utilized to realize the timely discharge of sewage. technical effect. When the liquid level is higher than the maximum value of the threshold value in this interval, it means that the treatment capacity of the sewage treatment plant has reached the upper limit, and more sewage cannot be treated. In order to reduce the treatment pressure of the sewage treatment facility, only the biochemical treatment The sewage output from the part 20 flows into the buffer part 40 through the buffer port 402 for storage, and has the characteristics of high safety.

It should be noted that the above descriptions of the above four implementations of the sewage regulation and storage device in the drainage system provided by the embodiments of this specification are only examples of the practical application of the sewage regulation and storage device, and do not constitute a limitation of use. Personnel can also understand that the sewage regulation and storage device provided in the embodiments of this specification can also be applied to the drainage system in addition to the above four implementations, other implementations that need to be used for the storage regulation and storage of sewage, or the above four implementations. combination, which is not limited in the present invention. In other words, as long as it is an embodiment capable of storing or discharging sewage and achieving the technical effect of regulating and storing sewage, it is applicable to the present invention and falls within the protection scope of the present invention.

Those skilled in the art can understand that the present invention does not limit the size setting of the basic rainfall threshold value and the size setting of the standard liquid level interval, and the rainfall parameter threshold value and the standard liquid level interval can be set according to the actual operation requirements. Can. Similarly, the monitoring of rainfall period and non-rainfall period, as well as the monitoring of rainfall amount, can be monitored by two rain gauges. The monitoring of the period, the amount of rainfall, and the monitoring of the liquid level can be monitored by two liquid level gauges, and the buffer pool and sewage treatment can also be monitored by a liquid level monitor with two liquid level monitoring functions. The liquid level of the factory is monitored, which is not limited in the present invention, as long as the implementation methods of one or more monitoring devices capable of realizing two monitoring functions are applicable to the present invention and are also within the protection scope of the present invention.

Embodiment 2

The same inventive concept as the first embodiment, the second embodiment of the present invention also provides a sewage regulation and storage method based on gravity water intake and air pressure emptying water, which is applied to the device described in the above-mentioned first embodiment, and the method includes:

receiving an identification instruction for whether the buffer needs to be discharged;

If so, control the first switch and the second switch to open, and the first valve to open and the second valve to close, and fill the buffer with air;

The air squeezes the sewage in the buffer portion to flow into the interception portion, and is discharged from the confluence pipe;

receiving an identification instruction of whether the buffer needs to store water;

If yes, control the first switch to close, the second switch to open, the second valve to open, and the first valve to close; the sewage in the interception part flows into the buffer part under the action of gravity. .

Specifically, when the first rain gauge detects that the current period is in a rain state, it sends an identification instruction to the controller that the buffer needs to store water, that is, the controller controls the first switch to close, the second switch to open, and the first valve to open. The second valve is closed and the second valve is opened, so that the sewage output from the biochemical part 20 flows into the buffer part 40 through the buffer port 402 through the interception part under the action of gravity for storage, so that only rainwater exists in the confluence pipe 30 . When the first rain gauge detects that the current period is in a non-rain condition, it sends an identification instruction to the controller that the buffer needs to be discharged, that is, the controller controls the opening of the first switch, the opening of the first valve and the closing of the second valve, The air pressure is charged into the buffer part through the air source. At this time, the sewage stored in the buffer part 40 is pressed into the junction pipe 30 through the buffer port 402 and the first interception outlet 103 in turn under the action of air pressure and discharged, which effectively avoids the need for In the prior art, the structural design of the sewage inputted by the biochemical unit 20 directly enters the confluence pipe for output, and there are technical defects such as serious pollution of natural water bodies in rainy days, or excessive treatment pressure of sewage treatment facilities and waste of resources, etc. It achieves the technical effect of regulating and storing sewage when sewage discharge is not required, and has the characteristics of simple control, convenient operation and wide applicability.

As the second application environment of the method, the second rain gauge in the above-mentioned first embodiment can output whether the water needs to be discharged, or the identification instruction of water discharge, and then the controller communicating with the second rain gauge can execute the control.

Specifically, when the second rain gauge monitors that the current period is a relatively large amount of rainfall, it sends an identification instruction to the controller that the buffer needs to store water, that is, the controller controls the first switch to be off, the second switch to be turned on, and the first switch to be turned on. The first valve is closed and the second valve is opened, so that the sewage output from the biochemical part 20 flows into the buffer part 40 through the buffer port 402 through the interception part under the action of gravity and is stored in the buffer part 40 , so that only the confluence pipe 30 exists when the rainfall is relatively large. Rain, and when the second rain gauge monitors that the current period is less rainfall, it sends an identification command to the controller that the buffer needs to be discharged, that is, the controller controls the opening of the first switch, the opening of the first valve, and the opening of the second valve. closed, and the air pressure is charged into the buffer part through the air source. At this time, the sewage stored in the buffer part 40 is pressed into the confluence pipe 30 through the buffer port 402 and the first interception outlet 103 in turn under the action of air pressure and discharged, effectively It avoids the structural design that the sewage input by the biochemical unit 20 directly enters the confluence pipe for output, which is easy to cause serious pollution of natural water bodies when the rainfall is relatively large, or technical defects such as excessive treatment pressure of sewage treatment facilities and waste of resources, etc. It can achieve the technical effect of regulating and storing sewage when sewage discharge is not required, and has the characteristics of simple structure, convenient operation and wide applicability.

As the third application environment of the method, the first liquid level gauge in the above-mentioned first embodiment can output the identification instruction of whether water needs to be discharged or whether the water is discharged, and then the controller communicating with the first liquid level gauge can execute the control. .

Specifically, when the first liquid level gauge detects that the buffer part still has storage space in the current period, it sends an identification instruction to the controller that the buffer part needs to store water, that is, the controller controls the first switch to be turned off and the second switch to be turned on. , the first valve is closed and the second valve is opened, thereby realizing that the sewage output by the biochemical part 20 flows into the buffer part 40 through the interception part through the buffer port 402 under the action of gravity for storage, and the first liquid level gauge monitors the current period. When the buffer part has no storage space, it will send an identification instruction to the controller that the buffer part needs water, that is, the controller will control the opening of the first switch, the opening of the first valve and the closing of the second valve, and the buffer part will be charged through the air source. At this time, the sewage stored in the buffer part 40 is pressed into the merging pipe 30 through the buffer port 402 and the first interception outlet 103 in sequence under the action of air pressure and discharged, which effectively prevents the sewage in the buffer part from overflowing.

As the fourth application environment of the method, the second liquid level gauge in the above-mentioned first embodiment can output whether the water needs to be discharged, or the identification instruction of water discharge, and then the controller communicating with the second liquid level gauge can execute the control. .

Specifically, when the second liquid level gauge detects that there is still water storage space in the sewage treatment plant in the current period, it sends an identification instruction to the controller that the buffer needs to be discharged, that is, the controller controls the first switch to open and the first valve to open. When the second valve is opened and the second valve is closed, the air pressure is charged into the buffer part through the air source. At this time, the sewage stored in the buffer part 40 is pressed into the confluence pipe 30 through the buffer port 402 and the first interception outlet 103 in sequence under the action of air pressure. It can effectively utilize the treatment capacity of the sewage treatment plant reasonably and realize the technical effect of timely discharge of sewage. When the second liquid level gauge detects that the sewage treatment plant has no water storage space in the current period, it sends an identification instruction to the controller that the buffer needs to store water, that is, the controller controls the first switch to close, the second switch to open, The first valve is closed and the second valve is opened, so that the sewage output from the biochemical part 20 flows into the buffer part 40 through the interception part through the buffer port 402 under the action of gravity for storage, which has the characteristics of high safety.

It should be noted that the above descriptions of the above-mentioned four embodiments of the sewage regulation and storage method in the drainage system provided by the embodiments of this specification are only examples for the practical application of the sewage regulation and storage method, and do not constitute a limitation of use. Personnel can also understand that the sewage regulation and storage method provided in the embodiments of this specification can also be applied to the drainage system in addition to the above four implementations, other implementations that need to be used for the storage regulation and storage of sewage, or the above four implementations. combination, which is not limited in the present invention. In other words, as long as it is an embodiment capable of storing or discharging sewage and achieving the technical effect of regulating and storing sewage, it is applicable to the present invention and falls within the protection scope of the present invention.

Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (14)

1. The utility model provides a sewage regulation and storage device based on gravity is intake and atmospheric pressure evacuation goes out water, its characterized in that, the device includes:

the cut-off part (10) is internally provided with a containing space (101) for containing sewage;

the buffer part (40) is internally provided with a storage space (401) for storing sewage and is respectively communicated with the cut-off part (10) and the external atmospheric pressure; the height of the part, communicated with the interception part (10), of the buffer part (40) is lower than that of the part, communicated with the confluence pipe (30), of the interception part (10);

a gas source (120) in communication with the buffer (40); buffer portion (40) are intake when, sewage in cut-off portion (10) warp under the action of gravity storage space (101) flow in storage space (401) buffer portion (40) are out of water the time, by air supply (120) to fill into the atmospheric pressure in buffer portion (40), will under the atmospheric pressure effect sewage in storage space (401) is arranged to storage space (101).

2. The gravity feed and air pressure evacuated effluent based sewage storage device of claim 1, further comprising:

an exhaust pipe (403) provided in the buffer section (40);

a first valve (406) is arranged at the exhaust pipe (403) and is used for communicating the gas source (120) with the buffer part (40);

a second valve (407) is provided in the exhaust pipe (403) to communicate the buffer section (40) with the outside atmosphere.

3. The gravity feed and air pressure evacuated effluent based sewage storage device according to claim 1, wherein the cut-off portion (10) comprises:

a shut-off inlet (102) in communication with a water outlet of the biochemical portion (20) for receiving the unit area to discharge the wastewater;

a first shut-off outlet (103) and a second shut-off outlet (104), the first shut-off outlet (103) communicating with the confluence pipe, the second shut-off outlet (104) communicating with the buffer portion (40).

4. The gravity feed and air pressure empty discharge based sewage storage device of claim 3,

the top elevation of the buffer part (40) is lower than the bottom elevation of the intercepting inlet (102).

5. The gravity feed and air pressure evacuated effluent based sewage storage device of claim 3, further comprising:

a first switch (121) provided at the first shut-off outlet (103); and

a second switch (122) disposed at the second shut-off outlet (104).

6. The gravity feed and air pressure evacuated effluent water storage device of any one of claims 3 to 5, wherein:

the buffer part (40), the biochemical part (20) and the interception part (10) are of split structures;

the biochemical part (20) is a septic tank;

the buffer part (40) is one of a regulation pool, a box culvert or a pipe culvert;

the cut-off portion (10) is one of a diverter well, a cut-off well, a abandonment well, a buffer corridor or an installation well.

7. The gravity feed and air pressure evacuated effluent water storage device of any one of claims 3 to 5, wherein:

the buffer part (40), the biochemical part (20) and the interception part (10) are of an integrated structure; the biochemical part (20) is a septic tank, and the buffering part (40) and the intercepting part (10) are two independent areas in the biochemical part (20).

8. The gravity feed and air pressure evacuated effluent water storage device of any one of claims 3 to 5, wherein:

the biochemical part (20) and the interception part (10) are of an integrated structure;

the buffer part (40) and the integrated structure are distributed in a split manner;

the buffer part (40) is one of a regulation pool, a box culvert, a pipe culvert or a buffer corridor;

the biochemical portion (20) is a septic tank and the cut-off portion (10) is a separate area within the biochemical portion (20).

9. The gravity feed and air pressure evacuated effluent water storage device of any one of claims 3 to 5, wherein:

the buffering part (40) and the intercepting part (10) are of an integrated structure;

the biochemical part (20) and the integrated structure are distributed in a split mode, and the biochemical part (20) is a septic tank;

the buffer part (40) is one of a regulation pool, a box culvert, a pipe culvert or a buffer corridor.

10. The gravity feed and air pressure evacuated effluent based sewage storage device of claim 7, further comprising:

an exhaust pipe (403) provided in the biochemical part (20);

a first valve (406) is arranged at the exhaust pipe (403) and is used for communicating the gas source (120) with the buffer part (40);

a second valve (407) is provided in the exhaust pipe (403) to communicate the buffer section (40) with the outside atmosphere.

11. The gravity feed and air pressure evacuated effluent based sewage storage device of claim 3, further comprising:

an elbow (408), one end of which is communicated with the second shut-off outlet (104), the other end of which is communicated with the bottom of the buffer part (40), and the height of one end of which is lower than that of the other end of the elbow.

12. The sewage storage apparatus of claim 3, wherein the apparatus comprises:

the intercepting part (10) is of a T-shaped structure, the intercepting inlet (102) and the first intercepting outlet (103) form a transverse pipeline of the T-shaped structure, and the second intercepting outlet (104) forms a vertical pipeline of the T-shaped structure;

the buffering portion (40) is located below the intercepting portion (10) and is vertically inserted into the storage space (401) through the second intercepting outlet (104) to communicate the buffering portion (40) with the intercepting portion (10).

13. The sewage storage apparatus of claim 12, wherein:

the bottom of the buffer part (40) is provided with a groove (411) which is recessed downward relative to the storage space (401), and the second intercepting outlet (104) is disposed in the groove (411).

14. A sewage storage method based on gravity inflow and air pressure emptying of effluent, applied to the device of any one of claims 1 to 11, wherein the method comprises:

receiving an identification instruction whether the buffer part needs to discharge water or not;

if so, controlling the first switch and the second switch to be opened, the first valve to be opened and the second valve to be closed, and filling air into the buffer part;

the air extrudes the sewage in the buffer part to flow into the interception part and is discharged by the confluence pipe;

receiving an identification instruction whether the buffer part needs to store water or not;

if yes, controlling the first switch to be closed, the second switch to be opened, the first valve to be closed and the second valve to be opened; the sewage in the intercepting part flows into the buffer part under the action of gravity.

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