Flood-proof structure of vacuum well valve

Abstract

The utility model relates to a vacuum well valve anti-flooding structure which is applied to a vacuum well, a partition plate is arranged in the middle of the vacuum well, and the partition plate is connected with the vacuum well in a sealed mode and divides the vacuum well into an upper well body and a lower well body. The partition plate is provided with a gas circulation structure for preventing liquid from flowing into the upper well body from the lower well body. The utility model solves the problems of equipment water inlet and drainage system breakdown caused by abnormal rising of the liquid level of the vacuum well, and has the advantages of low sewage treatment cost and low installation requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum wells, in particular to a vacuum well valve flooding prevention structure. Background Art

[0002] Traditional sewage collection methods rely on gravity, transporting wastewater through pipes to sewage treatment plants for centralized treatment. While this method offers advantages such as simple structure, no power consumption, mature system design, and extensive operational experience, it also has numerous limitations: it requires a deep burial depth, thick pipes, extensive excavation, and is significantly affected by topography, making it unsuitable for areas with low population density and complex geological conditions. The advent of vacuum sewage collection and treatment systems has significantly addressed these issues. The vacuum sewage well, a key component of the vacuum sewage collection and treatment system, is primarily used for temporary sewage collection. When the liquid level in the well reaches a certain level, a vacuum valve is opened, pumping the water into the main pipeline for centralized treatment at a pumping station.

[0003] In existing technology, drainage pipes, vacuum valves, controllers, and liquid level detectors are typically installed within a vacuum well. Once the liquid level within the well exceeds a set value, the controller activates and controls the vacuum valve to open, pumping water. Once the liquid level falls below the set value, the controller controls the vacuum valve to close, stopping pumping. If the vacuum station loses pressure (due to damage to the station or the vacuum transmission pipeline, or other reasons), the controller and the vacuum valve will not open. Furthermore, during heavy rain or heavy domestic drainage, the vacuum valve will not be able to drain the water in time. Sewage within the well will gradually rise, submerging the vacuum valve, controller, and other equipment within the well. Since both the vacuum valve and controller are purely mechanical devices powered by gas, rising liquid levels can allow sewage to enter the equipment through their normally open air ports, causing damage and potentially paralyzing the entire vacuum sewage treatment system, resulting in losses. To address this, some technicians have created a separate space outside the vacuum well to relocate the controller and vacuum valve. This approach increases sewage treatment costs and requires high installation requirements. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a vacuum well valve anti-flooding structure, which solves the problem that the abnormal rise of the vacuum well liquid level causes water ingress to the equipment and paralysis of the drainage system, and has the advantages of low sewage treatment cost and low installation requirements.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a vacuum well valve anti-flooding structure is applied to the vacuum well, a partition is provided in the middle of the vacuum well, the partition is sealed and connected to the vacuum well and separates the vacuum well into an upper well body and a lower well body;

[0006] The partition is provided with a gas circulation structure for preventing liquid from overflowing from the lower well body into the upper well body.

[0007] Furthermore, the partition is configured to be in the shape of a flat plate.

[0008] Furthermore, the gas circulation structure includes a check valve and a through hole, the through hole is provided through the partition, and the check valve is provided below the through hole.

[0009] Furthermore, the check valve includes a float and a cover body, the cover body is fixedly connected to the partition and opposite to the through hole, a receiving space is formed between the cover body and the partition, the float is arranged in the receiving space, and the float can move in the receiving space and will not separate from the cover body.

[0010] Furthermore, the cover is configured to be hollow cylindrical with one end open, and the opening of the cover is fixedly connected to the partition;

[0011] The surfaces of the cover body that are not in contact with the partition are respectively provided with water holes, and the diameter of the water holes is smaller than the diameter of the float.

[0012] Furthermore, the cover body is formed integrally with the partition.

[0013] Furthermore, the middle part of the partition is recessed from bottom to top to form an installation cavity, the float is arranged in the installation cavity, a through hole is provided on the top surface of the installation cavity away from the partition, and a limiting part is provided near the bottom of the partition to prevent the float from escaping from the installation cavity.

[0014] Furthermore, the vacuum well is further provided with a controller, a vacuum valve, a drainage pipe, and a liquid level detector. The water inlet end of the drainage pipe is provided in the lower well body, and the water outlet end thereof is connected to the outside through the upper well body to discharge sewage from the lower well body into the vacuum well. The vacuum valve is provided on the drainage pipe and is located in the upper well body. The controller is connected to the vacuum valve and is located in the upper well body. The liquid level detector is connected to the controller and its detection part is provided in the lower well body.

[0015] The connections between the drainage pipe, the liquid level detector and the partition are all sealed connections.

[0016] Furthermore, the vacuum well has a sewage inlet and a sewage outlet. The sewage inlet is arranged in the lower well body, and the sewage outlet is arranged in the upper well body. The water inlet end of the drainage pipe is connected to the liquid surface in the lower well body, and the water outlet end thereof is connected to the sewage outlet.

[0017] Furthermore, the upper well body and the lower well body are connected in a socket manner through a sealing member.

[0018] The beneficial effects of the utility model are:

[0019] The utility model separates the vacuum well into an upper well body and a lower well body by arranging a partition with a gas circulation structure. The equipment is installed inside the upper well body. The partition can prevent the liquid in the lower well body from entering the upper well body. When the liquid level in the vacuum well rises abnormally, sewage cannot enter the upper well body and will not damage the equipment and instruments in the upper well body, thereby ensuring the normal operation of the vacuum drainage system and avoiding losses. Compared with the existing technology, there is no need to set up a separate space to move out the equipment. The entire vacuum well drainage system is simple to build, has a good anti-flooding effect, and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 (The float does not float up and the through hole is conductive);

[0021] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 (The float rises and the through hole is blocked and not conductive);

[0022] Figure 3 The structure of the partition of the utility model is shown as follows Figure 1 ;

[0023] Figure 4 for Figure 3 Schematic diagram of the structure in the AA direction;

[0024] Figure 5 for Figure 3 Schematic diagram of the structure in the B direction.

[0025] Figure 6 The structure of the partition of the utility model is shown as follows Figure 2 (The middle part of the partition is recessed from bottom to top to form a mounting cavity);

[0026] In the picture:

[0027] Vacuum well 1, upper well body 11, sewage outlet 111, lower well body 12, sewage inlet 121, partition 2, through hole 21, installation cavity 22, first through hole 23, limit part 24, vacuum valve 3, controller 4, check valve 5, float 51, cover body 52, water hole 521, accommodating space 53, drainage pipe 6, liquid level detector 7. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1-Figure 2 The illustrated embodiment shows a vacuum well valve flood prevention structure, applied to a vacuum well 1. A partition 2 is provided in the middle of the vacuum well, sealed to the well and separating it into an upper well body 11 and a lower well body 12. The partition is equipped with a gas flow structure to prevent liquid from overflowing from the lower well body into the upper well body. This embodiment separates the vacuum well into an upper well body and a lower well body by providing a partition with a gas flow structure. This partition prevents liquid from overflowing from the lower well body into the upper well body. In the event of an abnormal rise in the liquid level within the vacuum well, wastewater cannot enter the upper well body, preventing damage to equipment and instruments within the upper well body. This ensures the normal operation of the vacuum drainage system and prevents losses. Compared with existing technologies, the vacuum well drainage system does not require additional space to remove equipment, making it simple to construct, effective, and cost-effective.

[0031] The opening and closing of the vacuum valve 3 and the controller 4 in the vacuum well require air switching, so the upper well body needs to maintain circulation with the external air. Therefore, although a partition is set in the vacuum well, the partition must be provided with a through hole to allow air circulation in the upper well body, but it is necessary to prevent the sewage in the lower well body from overflowing from the through hole and entering the upper well body to damage the equipment. Therefore, it is necessary to set a gas circulation structure to prevent sewage from overflowing into the upper well body.

[0032] It should be noted that in the existing technology, some designers also separate the vacuum well into an upper well body and a lower well body, and seal the upper well body and the lower well body so that they are not connected. The equipment is set in the upper well body to prevent the equipment from being damaged by liquid. Since the opening and closing of the equipment requires air switching, the designers connect a pipe on the upper well body to the outside to solve the ventilation needs of the equipment. However, this design will bring additional processes to the subsequent construction, and the protruding pipe setting will also affect the aesthetics.

[0033] Figure 3-Figure 5As shown, the gas circulation structure includes a check valve 5 and a through hole 21. The through hole is provided through the partition, and the check valve is provided below the through hole, preferably directly below. In this embodiment, the partition is configured as a flat plate, sealed and connected to the inner wall of the vacuum well or formed integrally therewith. The check valve 5 includes a float 51 and a cover 52. The cover is fixedly connected to the partition and opposite the through hole. A receiving space 53 is formed between the cover and the partition. The float is provided in the receiving space. The receiving space is slightly larger than the volume of the float, just enough to allow the float to move within the receiving space without shifting left or right. When the sewage in the lower well is at a low level, the float falls to the bottom of the cover due to gravity. Specifically, the cover body is set to be a hollow cylinder with one end open. The opening of the cover body is fixedly connected to the partition, and the diameter of the cover body is equal to or slightly larger than the diameter of the float, just allowing the float to move in the accommodating space without shifting left or right, so that the float can be accurately blocked at the through hole when the liquid level rises; the surfaces of the cover body that do not contact the partition (including the bottom surface and side walls away from the partition) are respectively provided with water holes 521, the diameter of the water holes is smaller than the diameter of the float, and the bottom surface of the cover body away from the partition is also provided with a water hole, the diameter of the water hole is smaller than the diameter of the float, and the float moves in the cover body but will not separate from the cover body; further preferably, a water hole is provided on the bottom surface of the cover body away from the partition, the diameter of the water hole is slightly larger than the diameter of the water hole on the side wall, but smaller than the diameter of the float. When the liquid level in the lower well rises, sewage enters the accommodating space 53 from the water holes on the bottom and side walls of the cover. The float moves upward under the buoyancy of the sewage and blocks the through hole 21, preventing sewage from entering the upper well. The equipment and instruments in the upper well are not affected, thus ensuring the normal operation of the vacuum drainage system and avoiding losses.

[0034] The vacuum well is also provided with a controller 4, a vacuum valve 3, a drainage pipe 6, and a liquid level detector 7. The vacuum well has a sewage inlet 121 and a sewage outlet 111. The sewage inlet is provided in the lower well body, and the sewage outlet is provided in the upper well body. The water inlet end of the drainage pipe is connected to the sewage area at the bottom of the vacuum well, and its water outlet end is connected to the sewage outlet. The drainage pipe is used to discharge sewage from the lower well body to the vacuum well; the vacuum valve is provided on the drainage pipe and is located in the upper well body for controlling the on and off of the drainage pipe. The controller is connected to the vacuum valve and is located in the upper well body for starting or closing the vacuum valve. The liquid level detector is connected to the controller and its detection part is provided in the lower well body to contact the liquid surface. When the liquid level detector detects that the sewage is at a high liquid level, it transmits a signal to the controller. After receiving the signal, the controller opens the vacuum valve to start drainage; it should be noted that the connections between the drainage pipe, the liquid level detector and the partition are all sealed connections.

[0035] When the liquid level is low, the vacuum drainage system does not operate, the float falls to the bottom of the cover, and the through-hole is not blocked by the float. Air flow between the upper and lower well bodies is normal, and the controller and vacuum valve are in a standby state, ready for activation at any time. When the liquid level is high, the controller and vacuum valve activate to drain water. If the liquid level rises too quickly, the drainage system cannot drain the water quickly or the drainage system fails to activate, and the liquid quickly submerges the float. Under the buoyancy of the liquid, the float moves upward and blocks the through-hole, preventing liquid from overflowing into the upper well body and damaging the controller and vacuum valve. The anti-flooding structure of this embodiment cuts off air flow within the upper well body, protecting the equipment. It should be noted that after the float blocks the through-hole, the vacuum valve and the controller remain in their original state. Specifically, before shutting off, if the controller and the vacuum valve are in operation, they will continue to operate and pump water. Due to the lack of air circulation, the controller and the vacuum valve cannot be closed and can only maintain their original operating state until the liquid level drops and the float falls back to its original position under the action of gravity, and air circulation is re-established between the upper well body and the lower well body. Before shutting off, if the controller and the vacuum valve are not started, the controller and the vacuum valve will remain in the inactive state during the period when the float blocks the through-hole.

[0036] In this embodiment, the upper well body and the lower well body are connected by a socket connection through a sealing member (such as a sealing ring, etc.), which is easy to install.

[0037] In this embodiment, preferably, the through hole and the water hole are both circular.

[0038] In this embodiment, the cover body and the partition plate can be integrally formed, or the cover body and the partition plate can be fixedly connected together using existing technology.

[0039] In this embodiment, it is preferred that the float is made of a flexible material, which facilitates extrusion deformation when blocking the through hole, thereby improving the sealing performance of the blocked through hole.

[0040] It should be noted that when the vacuum valve is opened, its air interface will inhale air, and when the vacuum valve is closed, its air interface will discharge air; for the controller, the principle is basically similar to that of the vacuum valve. During the opening and closing process of the controller, the air interface of the controller will inhale or discharge air.

[0041] The working process of this embodiment is:

[0042] When the water level in the vacuum well rises normally to the high threshold, the liquid level detector transmits the detected data to the controller, and the controller starts to open the vacuum valve, and the drainage pipe starts to drain. At this time, the check valve does not operate, and the float in the cover body falls to the bottom of the cover body due to the lack of buoyancy. The gas flow in the upper well body is normal, that is, the air circulation of the vacuum valve and the air interface of the controller is normal; when the water level in the vacuum well rises rapidly, the vacuum valve does not start at the high threshold or the water level rises too fast for the drainage pipe to drain in time. At this time, since sewage enters the cover body from the water hole at the bottom of the cover body, the float floats up under the buoyancy of the sewage and blocks the through hole of the partition. The gas between the upper well body and the lower well body does not circulate. Even if the air in the vacuum valve and the air interface of the controller does not circulate, sewage will not enter the vacuum valve and the controller, protecting the equipment and avoiding damage to the entire valve system.

[0043] Specifically, the diameter of the float, the hovering position, the size of the cover, etc. should be calculated based on the actual application.

[0044] Example 2:

[0045] like Figure 6 As shown, a vacuum well valve flooding prevention structure is basically the same as Example 1, except that: the middle part of the partition 2 is recessed from bottom to top to form an installation cavity 22, that is, the installation cavity is protruded and formed in the middle part of the partition, and the float is arranged in the installation cavity. The installation cavity is away from the top surface of the partition and is provided with a first through hole 23. The bottom of the installation cavity is close to the partition and is provided with a limiting portion 24 to prevent the float from escaping from the installation cavity. The limiting portion can be formed integrally with the installation cavity, or fixedly and sealedly connected to the partition.

[0046] The limiting portion can be arranged to be parallel to the partition, or can be arranged to be a bell mouth in the shape of an inverted "eight", the diameter of the bell mouth being smaller than the diameter of the float so that the float will not fall out of the installation cavity.

[0047] The flood prevention structure of this embodiment has the same technical effect as that of embodiment 1.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A vacuum well valve anti-flooding structure, applied to vacuum wells, characterized in that: A partition is provided in the middle of the vacuum well, the partition is sealed and connected to the vacuum well and separates the vacuum well into an upper well body and a lower well body; The partition is provided with a gas circulation structure for preventing liquid from overflowing from the lower well body into the upper well body.

2. The vacuum well valve flooding prevention structure according to claim 1, characterized in that: The partition is formed in a flat plate shape.

3. The vacuum well valve flooding prevention structure according to claim 2, characterized in that: The gas circulation structure includes a check valve and a through hole. The through hole is arranged through the partition plate, and the check valve is arranged below the through hole.

4. The vacuum well valve anti-flooding structure according to claim 3, characterized in that: The check valve includes a float and a cover body. The cover body is fixedly connected to the partition and opposite to the through hole. A accommodating space is formed between the cover body and the partition. The float is arranged in the accommodating space. The float can move in the accommodating space and will not separate from the cover body.

5. The vacuum well valve flooding prevention structure according to claim 4, characterized in that: The cover body is configured as a hollow cylinder with one end open, and the opening of the cover body is fixedly connected to the partition; The surfaces of the cover body that are not in contact with the partition are respectively provided with water holes, and the diameter of the water holes is smaller than the diameter of the float.

6. The vacuum well valve flood prevention structure according to claim 4, characterized in that: The cover body is formed integrally with the partition.

7. The vacuum well valve flooding prevention structure according to claim 4, characterized in that: The middle part of the partition is recessed from bottom to top to form an installation cavity, the float is arranged in the installation cavity, a through hole is provided on the top surface of the installation cavity away from the partition, and a limiting part is provided near the bottom of the partition to prevent the float from leaving the installation cavity.

8. The vacuum well valve flooding prevention structure according to claim 1, characterized in that: The vacuum well is also provided with a controller, a vacuum valve, a drainage pipe, and a liquid level detector. The water inlet end of the drainage pipe is provided in the lower well body, and the water outlet end thereof is connected to the outside through the upper well body to discharge sewage from the lower well body into the vacuum well. The vacuum valve is provided on the drainage pipe and is located in the upper well body. The controller is connected to the vacuum valve and is located in the upper well body. The liquid level detector is connected to the controller and its detection part is provided in the lower well body. The connections between the drainage pipe, the liquid level detector and the partition are all sealed connections.

9. The vacuum well valve flooding prevention structure according to claim 8, characterized in that: The vacuum well has a sewage inlet and a sewage outlet. The sewage inlet is arranged in the lower well body, and the sewage outlet is arranged in the upper well body. The water inlet end of the drainage pipe is connected to the liquid surface in the lower well body, and the water outlet end thereof is connected to the sewage outlet.

10. The vacuum well valve flooding prevention structure according to claim 1, characterized in that: The upper well body and the lower well body are connected via a sealing member.

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