Sewage backflow prevention device
By designing a sewage anti-flow device including fixed stops and floating components, the problem of the failure of traditional rainwater discharge systems in extreme weather events is solved, and the drainage is automatically adjusted without external energy, preventing backflow and mixing, and improving the reliability and durability of the system.
Patent Information
- Application Number
- CN202420949200.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Traditional rainwater discharge systems are prone to functional failure in extreme weather events, resulting in sewage return and mixing, polluting groundwater and surrounding environment. Especially in plain river network areas, electric gates are prone to failure due to power outage during heavy rainstorms.
A sewage anti-flow device is designed, including a fixed stop and a floating member. The floating member has a drainage channel through both ends and automatically floats when the water level changes. It is used to form a seal to prevent river water from pouring back.
The device can automatically turn on or off according to water level changes without external energy, ensuring the safe operation of the drainage system, preventing rainwater from pouring back and mixing rainwater and sewage, reducing maintenance costs, and improving the reliability and durability of the system.
Smart Images
Figure CN222667014U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage discharge, in particular to a sewage backflow prevention device. Background Art
[0002] Traditional rainwater drainage systems often fail to function when facing extreme weather events due to insufficient design standards, aging facilities or improper operation and maintenance, resulting in flooding of residential, commercial and industrial areas, posing a serious threat to people's lives and property safety. Especially in plain river network areas, due to the flat terrain, the ability to regulate rainwater discharge and river water levels is limited. Once heavy rainfall or upstream flooding occurs, the rainwater outlets are easily flooded, causing sewage backflow and mixing, polluting groundwater and the surrounding environment.
[0003] At present, anti-backflow devices are mainly divided into two types: electric gates and mechanical flap gates. Although electric gates have a fast response speed, they are prone to failure due to power outages during heavy rains, which in turn causes rainwater backflow, and have high maintenance costs. Utility Model Content
[0004] In view of this, the utility model provides a sewage backflow prevention device to solve the problem of rainwater backflow caused by electric gates failing to work normally.
[0005] The utility model provides a sewage backflow prevention device, comprising: a fixed stopper, suitable for being fixed in a manhole, the fixed stopper having a first inclined surface inclined relative to a horizontal direction; a floating component, arranged below the fixed stopper and having a drainage channel running through both ends thereof, the first end of the floating component being suitable for being flexibly connected to a sewage water supply pipe on the manhole, one end of the drainage channel being communicated with the sewage water supply pipe, and the other end of the drainage channel being connectable to a river inlet connecting pipe on the manhole through a shaft of the manhole, the second end of the floating component having a second inclined surface inclined relative to a horizontal direction, the inclination angle and the inclination direction of the second inclined surface being the same as the inclination angle and the inclination direction of the first inclined surface, the floating component having a normal drainage state in which sewage in the drainage channel flows into the river connecting pipe through the shaft, and the floating component also having a backflow prevention state in which the second inclined surface cooperates with the first inclined surface when floating up to the second inclined surface under the action of water backflowing into the manhole.
[0006] Beneficial effects: When the river is at a low water level, the floating component is in a normal drainage state under the action of its own gravity. At this time, the floating component is almost in a horizontal state. The sewage flows from the sewage water pipe into the drainage channel of the floating component, and then flows into the manhole. The sewage in the manhole flows into the river through the river inlet connecting pipe; when the river is at a high water level, the water in the river flows back into the manhole through the river inlet connecting pipe. Under the action of the sewage, the floating component floats up. When the water level rises to the point where the second inclined surface of the floating component is completely in contact with the first inclined surface of the fixed stopper, the floating component and the fixed stopper form a seal. Even if the water level of the river rises again, the river water will not flow back into the sewage water pipe, effectively preventing the river water from flowing back. The above-mentioned sewage backflow prevention device can automatically open or close according to the water level change without the need for external energy, ensuring the safe operation of the drainage system, and effectively preventing rainwater backflow and mixing of rainwater and sewage. Compared with traditional electric gates and mechanical flap gates, it reduces dependence on external energy, reduces maintenance costs, and improves the reliability and durability of the system.
[0007] In an optional embodiment, the floating component includes a buoyancy box and a drainage pipe passing through the buoyancy box, one end of the drainage pipe passing through the buoyancy box is flexibly connected to the sewage water pipe, the other end of the drainage pipe passing through the buoyancy box has a second slope, and the inner cavity of the drainage pipe forms a drainage channel.
[0008] Beneficial effect: Under the action of water, the gravity of the buoyancy box and the drainage pipe is less than the buoyancy of the water on the floating component, and the second end of the floating component can float up. When the floating component is in the drainage state, the sewage can be discharged normally through the drainage pipe. The structure of the floating component is simple and easy to implement.
[0009] In an optional embodiment, the buoyancy box includes a box body and a filler, wherein the filler is filled in the box body, and the box body is suitable for floating under the action of the filler and water.
[0010] Beneficial effects: The buoyancy box floats up under the action of water through the filling material, and the buoyancy box has a simple structure and is easy to process and manufacture.
[0011] In an optional embodiment, the box body is a stainless steel box, and the filler is foam plastic.
[0012] Beneficial effects: Stainless steel boxes have the advantages of good corrosion resistance, high strength, and light weight, which can extend the service life of the pontoon. Foam plastic materials have the advantages of light weight, good flexibility, sound absorption and noise reduction, easy processing, and low cost.
[0013] In an optional embodiment, the sewage backflow prevention device also includes a displacement sensor and a controller. The displacement sensor is suitable for detecting the distance between the first inclined surface and the second inclined surface. The controller is electrically connected to the displacement sensor. The controller is used to determine the sealing condition between the floating component and the fixed stopper based on the displacement detected by the displacement sensor.
[0014] Beneficial effects: When the river is at a high water level, when the displacement detected by the displacement sensor is zero, it means that the floating component and the fixed stopper are in contact, and the floating component and the fixed stopper form a seal. Even if the water level of the river rises again, the river water will not flow back into the sewage pipe, effectively preventing the backflow of river water; when the displacement detected by the displacement sensor is not zero, it means that no seal is formed between the floating component and the fixed stopper, indicating that there are garbage and other blockages at the other end of the drainage channel or the connecting pipe into the river, such as resin and other hard objects, and manual maintenance is required.
[0015] In an optional embodiment, the sewage backflow prevention device further includes a fixing component, wherein the fixing component is fixed on the manhole, and the fixed stopper is fixed on the fixing component.
[0016] Beneficial effect: The fixed stopper is fixed to the inner wall of the manhole by means of a fixing component, and the fixing method is simple.
[0017] In an optional embodiment, the fixing component includes a mounting frame and a fixing bracket, the mounting frame is installed on the inner wall of the manhole, one end of the fixing bracket is fixedly connected to the mounting frame, and the other end of the fixing bracket is fixedly connected to the fixing stopper.
[0018] Beneficial effect: the fixed component is separated into two parts, the two parts are easier to process and manufacture, and the cost is reduced.
[0019] In an optional embodiment, the fixed stopper is a fixed stop plate.
[0020] Beneficial effects: The fixed stopper is formed by the plate, which has a simple structure and low cost.
[0021] In an optional embodiment, the fixed baffle is circular.
[0022] Beneficial effect: It is easy to match with the other end of the drain pipe.
[0023] In an optional embodiment, the floating component and the sewage water pipe are connected via a flexible joint.
[0024] Beneficial effect: When the floating component floats up, the flexible joint is bent and deformed, and the floating component and the sewage water pipe are connected through the flexible joint, which is easy to connect. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 A cutaway diagram of a sewage backflow prevention device according to an embodiment of the utility model;
[0027] Figure 2 for Figure 1 The structural schematic diagram of the sewage backflow prevention device shown in FIG. 1 when the floating component is floating;
[0028] Figure 3 for Figure 2 The structural schematic diagram of the sewage backflow prevention device shown in FIG. 1 when the floating component continues to float upward;
[0029] Figure 4 for Figure 3 A schematic diagram of the structure in which the floating component of the sewage backflow prevention device floats up to fit with the fixed stopper;
[0030] Figure 5 for Figure 1 A simplified cross-sectional schematic diagram of a sewage backflow prevention device shown;
[0031] Figure 6 for Figure 5 A top view of the sewage backflow prevention device is shown.
[0032] Description of reference numerals:
[0033] 1. Fixed stopper; 101. First inclined surface
[0034] 2. floating component; 201. pontoon; 202. drainage pipe; 2021. second inclined surface;
[0035] 3. Fixed component; 301. Mounting frame; 302. Fixed bracket;
[0036] 4. Flexible joint;
[0037] 5. Manhole;
[0038] 6. Sewage water pipe;
[0039] 7. Connecting pipe into the river. DETAILED DESCRIPTION
[0040] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0041] Combine the following Figures 1 to 6 , describing an embodiment of the utility model.
[0042] According to an embodiment of the utility model, a sewage backflow prevention device is provided, comprising: a fixed stopper 1 and a floating component 2, the fixed stopper 1 is suitable for being fixed in a manhole 5, the fixed stopper 1 has a first inclined surface 101 inclined relative to the horizontal direction, the floating component 2 is arranged below the fixed stopper 1 and has a drainage channel running through both ends thereof, the first end of the floating component 2 is suitable for being flexibly connected to a sewage water pipe 6 on the manhole 5, one end of the drainage channel is communicated with the sewage water pipe 6, and the other end of the drainage channel can be communicated with a river inlet connecting pipe 7 on the manhole 5 through the shaft of the manhole 5, the second end of the floating component 2 has a second inclined surface 2021 inclined relative to the horizontal direction, the inclination angle and the inclination direction of the second inclined surface 2021 are the same as the inclination angle and the inclination direction of the first inclined surface 101, the floating component 2 has a normal drainage state in which sewage in the drainage channel flows into the river connecting pipe 7 through the shaft, and the floating component 2 also has an anti-backflow state in which the second inclined surface 2021 floats to cooperate with the first inclined surface 101 under the action of water backflowing into the manhole 5.
[0043] When the sewage backflow prevention device of this embodiment is applied, when the river channel is at a low water level, the floating component 2 is in a normal drainage state under the action of its own gravity. At this time, the floating component 2 is almost in a horizontal state, and the sewage flows from the sewage inlet pipe 6 into the drainage channel of the floating component 2, and then flows into the manhole 5. The sewage in the manhole 5 flows into the river channel through the river inlet connecting pipe 7; when the river channel is at a high water level, the water in the river channel flows back into the manhole 5 through the river inlet connecting pipe 7, and the floating component 2 floats up under the action of the sewage. When the water level rises to the point where the second inclined surface 2021 of the floating component 2 is completely in contact with the first inclined surface 101 of the fixed stopper 1, the floating component 2 and the fixed stopper 1 form a seal. Even if the water level of the river channel rises again, the river water will not flow back into the sewage inlet pipe 6, thereby effectively preventing the river water from flowing back. The above-mentioned sewage backflow prevention device can automatically open or close according to water level changes without the need for external energy, thereby ensuring the safe operation of the drainage system and effectively preventing rainwater backflow and the mixing of rainwater and sewage. Compared with traditional electric gates and mechanical flap gates, it reduces dependence on external energy and maintenance costs, while improving the reliability and durability of the system.
[0044] It should be noted that when the river is at a low water level, it means that the water level of the river is lower than the bottom of the river inlet connecting pipe 7 , and when the river is at a high water level, it means that the water level of the river is higher than the bottom of the river inlet connecting pipe 7 .
[0045] In one embodiment, the floating component 2 includes a buoyancy box 201 and a drainage pipe 202 passing through the buoyancy box 201. One end of the drainage pipe 202 passing through the buoyancy box 201 is flexibly connected to the sewage supply pipe 6. The other end of the drainage pipe 202 passing through the buoyancy box 201 has a second inclined surface 2021. The inner cavity of the drainage pipe 202 forms a drainage channel. Under the action of water, the gravity of the buoyancy box 201 and the drainage pipe 202 is less than the buoyancy of the water on the floating component 2. The second end of the floating component 2 can float up. When the floating component 2 is in a drainage state, normal sewage discharge is achieved through the drainage pipe 202. The structure of the floating component 2 is simple and easy to implement.
[0046] In another embodiment, the floating component 2 is a floating tube. In this case, the buoyancy box 201 is not provided, and the floating tube that can float under the action of water is directly used. For example, the floating tube includes an inner tube, an outer tube and a filler filled between the inner tube and the outer tube.
[0047] In one embodiment, the buoyancy box 201 includes a box body and a filler, wherein the filler is filled in the box body, and the box body is suitable for floating under the action of the filler and water. The filler enables the buoyancy box 201 to float under the action of water, and the structure of the buoyancy box 201 is simple and easy to manufacture.
[0048] In one embodiment, the box body is a stainless steel box, which has the advantages of good corrosion resistance, high strength, and light weight, and prolongs the service life of the buoyancy box 201. It can be understood that the box body can also be made of other materials, and is not limited thereto.
[0049] In one embodiment, the filler is foam plastic or the like, and the foam plastic material has the advantages of being lightweight, having good flexibility, being able to absorb sound and reduce noise, being easy to process, and having low cost.
[0050] In one embodiment, the sewage backflow prevention device further includes a displacement sensor and a controller. The displacement sensor is suitable for detecting the distance between the first inclined surface 101 and the second inclined surface 2021. The controller is electrically connected to the displacement sensor. The controller is used to determine the sealing condition between the floating component 2 and the fixed stopper 1 according to the displacement detected by the displacement sensor. When the river is at a high water level, when the displacement detected by the displacement sensor is zero, it means that the floating component 2 and the fixed stopper 1 are in contact, and the floating component 2 and the fixed stopper 1 form a seal. Even if the water level of the river rises again, the river water will not flow back into the sewage water pipe 6, effectively preventing the backflow of the river water; when the displacement detected by the displacement sensor is not zero, it means that there is no seal between the floating component 2 and the fixed stopper 1, indicating that there are garbage and other blockages at the other end of the drainage channel or the river-entering connecting pipe 7, such as hard objects such as resin, and it is necessary to remind manual maintenance.
[0051] Furthermore, the sewage backflow prevention device further includes a reminder component, which includes at least one of the following: a sound alarm, a warning light, a voice alarm, etc. The reminder component is electrically connected to the controller, and when the water level of the river is high and the displacement detected by the displacement sensor is not zero, the controller controls the reminder component to issue a reminder, thereby reminding personnel to perform maintenance.
[0052] Specifically, the displacement sensor can adopt a photoelectric displacement sensor or a piezoelectric displacement sensor, etc. When the displacement sensor adopts a photoelectric displacement sensor, the photoelectric displacement sensor includes a transmitter and a receiver. The transmitter is suitable for emitting light, and the receiver is suitable for receiving light. The receiver is suitable for generating an electrical signal according to the change in the intensity of light, and the displacement between the floating component 2 and the fixed stopper 1 is determined by measuring the change in the electrical signal.
[0053] In one embodiment, the sewage backflow prevention device further includes a fixing component 3, the fixing component 3 is fixed on the manhole 5, and the fixed stopper 1 is fixed on the fixing component 3. The fixed stopper 1 is fixed to the inner wall of the manhole 5 by the fixing component 3, and the fixing method is simple.
[0054] In another embodiment, the fixed stopper 1 may also be directly fixed on the inner wall of the manhole 5 .
[0055] In one embodiment, the fixing component 3 includes a mounting frame 301 and a fixing bracket 302. The mounting frame 301 is mounted on the inner wall of the manhole 5. One end of the fixing bracket 302 is fixedly connected to the mounting frame 301, and the other end of the fixing bracket 302 is fixedly connected to the fixing stopper 1. The fixing component 3 is disassembled into two parts, which are easier to process and manufacture, thereby reducing costs.
[0056] In another embodiment, the fixing component 3 may also be a fixing frame.
[0057] In one embodiment, the fixed stopper 1 is a fixed stopper plate, and the fixed stopper 1 is formed by a plate material, which has a simple structure and low cost.
[0058] In another embodiment, the fixed stopper 1 is a fixed stopper or the like.
[0059] In one embodiment, the fixed baffle is circular, so as to be matched with the other end of the drain pipe. It is understood that the fixed baffle can also be rectangular.
[0060] In one embodiment, the floating component 2 and the sewage water pipe 6 are connected via a flexible joint 4. When the floating component 2 floats, the flexible joint 4 bends and deforms. The floating component 2 and the sewage water pipe 6 are connected via the flexible joint 4, and the connection is simple.
[0061] In another embodiment, the first end of the floating component 2 is made of a flexible material.
[0062] In one embodiment, the inclination angle of the first inclined surface 101 and the second inclined surface 2021 is 45°. It can be understood that the inclination angle of the first inclined surface 101 and the second inclined surface 2021 can also be 30°, etc., and is not limited thereto.
[0063] Combine the following Figures 1 to 4 The working process of the sewage backflow prevention device is explained as follows:
[0064] When the water level of the river is low, sewage flows from the sewage pipe 6 into the flexible joint 4, then flows out from the drainage pipe 202 provided on the buoy 201, and then flows into the river through the downstream river connecting pipe 7, thus achieving normal drainage;
[0065] like Figure 2 As shown, when the water level in the river is high, the river water flows back into the manhole 5, floats the buoy 201, and bends the flexible joint 4 through the flexible joint 4, the water level continues to rise, and when the second inclined surface 2021 of the drainage pipe 202 coincides with the first inclined surface 101 of the fixed baffle and forms a seal (as shown in FIG. Figure 4 As shown in the figure, the backflow of river water is prevented. The higher the water level in the river, the tighter the drainage pipe 202 and the fixed baffle are pressed by the buoyancy.
[0066] When the water level of the receding river becomes lower, the buoy 201 falls down and the sewage is discharged into the river again.
[0067] In the related art, conventional anti-backflow devices use electric gates and conventional mechanical flap gates. Electric gates are prone to power outages during heavy rains, affecting their operation. Conventional mechanical flap gates are widely used due to their simple structure and low cost, but they are prone to malfunction due to mechanical failure or foreign matter, resulting in failure to close normally at critical moments and failure to effectively prevent backflow.
[0068] In this embodiment, the sewage backflow prevention device uses the light material filled in the sealed box to generate buoyancy, and automatically adjusts the height of the other end of the drain pipe 202 according to the water level change. Under normal drainage conditions, the float box 201 maintains the normal drainage of the drain pipe 202; when the water level rises, the float box 201 rises, driving the other end of the drain pipe 202 to fit with the fixed baffle, so that the other end of the drain pipe 202 is closed to prevent backflow.
[0069] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
[0070] 1. The sewage backflow prevention device adopts the buoyancy principle to automatically adjust the height of the drain outlet formed at the other end of the drain pipe 202. It automatically opens or closes according to the water level change without the need for external energy, preventing rainwater backflow and sewage mixing, and ensuring the safe operation of the drainage system.
[0071] 2. The fixed baffle is fixed to the inner wall of the manhole 5 through the fixing bracket 302 and the mounting frame 301, ensuring that the sewage backflow prevention device can be stably installed and operated under various terrain and climatic conditions.
[0072] 3. The sewage backflow prevention device is suitable for a variety of drainage systems, such as rainwater discharge in residential areas, commercial areas and industrial areas, as well as flood control and drainage in plain river network areas. It has a wide range of uses and is multifunctional. The climate and terrain characteristics of different regions are taken into consideration during the design, so that the sewage backflow prevention device can maintain efficient, stable and reliable operation under extreme weather conditions (such as heavy rain and floods), and has strong environmental adaptability.
[0073] 4. Compared with traditional electric gates and mechanical flap doors, the sewage backflow prevention device reduces dependence on external energy, is easy to maintain, reduces maintenance costs, and improves the reliability and durability of the system.
[0074] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. A sewage backflow prevention device, characterized in that: include: A fixed stopper (1) adapted to be fixed in a manhole (5), the fixed stopper (1) having a first inclined surface (101) arranged obliquely relative to a horizontal direction; A floating component (2) is arranged below the fixed stopper (1) and has a drainage channel running through both ends thereof. The first end of the floating component (2) is suitable for being flexibly connected to a sewage water pipe (6) on a manhole (5). One end of the drainage channel is in communication with the sewage water pipe (6). The other end of the drainage channel can be in communication with a river inlet connecting pipe (7) on the manhole (5) through a shaft of the manhole (5). The second end of the floating component (2) has a second inclined surface (2021) inclined relative to the horizontal direction. The inclination angle and inclination direction of the second inclined surface (2021) are the same as the inclination angle and inclination direction of the first inclined surface (101). The floating component (2) has a normal drainage state in which sewage in the drainage channel flows into the river inlet connecting pipe (7) through the shaft. The floating component (2) also has an anti-backflow state in which the second inclined surface (2021) cooperates with the first inclined surface (101) under the action of water backflowing into the manhole (5).
2. The sewage backflow prevention device according to claim 1, characterized in that: The floating component (2) comprises a buoyancy box (201) and a drainage pipe (202) passing through the buoyancy box (201); one end of the drainage pipe (202) passing through the buoyancy box (201) is flexibly connected to the sewage water pipe (6); the other end of the drainage pipe (202) passing through the buoyancy box (201) has the second inclined surface (2021); and the inner cavity of the drainage pipe (202) forms the drainage channel.
3. The sewage backflow prevention device according to claim 2, characterized in that: The buoyancy box (201) comprises a box body and a filler, wherein the filler is filled in the box body, and the box body is suitable for floating under the action of the filler and water.
4. The sewage backflow prevention device according to claim 3 is characterized in that: The box body is a stainless steel box, and the filler is foam plastic.
5. The sewage backflow prevention device according to any one of claims 1 to 4, characterized in that: The sewage backflow prevention device further comprises a displacement sensor and a controller, wherein the displacement sensor is suitable for detecting the distance between the first inclined surface (101) and the second inclined surface (2021), and the controller is electrically connected to the displacement sensor, and the controller is used to determine the sealing condition between the floating component (2) and the fixed stopper (1) according to the displacement detected by the displacement sensor.
6. The sewage backflow prevention device according to any one of claims 1 to 4, characterized in that: The sewage backflow prevention device further comprises a fixing component (3), wherein the fixing component (3) is fixed on the manhole (5), and the fixing stopper (1) is fixed on the fixing component (3).
7. The sewage backflow prevention device according to claim 6, characterized in that: The fixing component (3) comprises a mounting frame (301) and a fixing bracket (302); the mounting frame (301) is mounted on the inner wall of the manhole (5); one end of the fixing bracket (302) is fixedly connected to the mounting frame (301); and the other end of the fixing bracket (302) is fixedly connected to the fixing stopper (1).
8. The sewage backflow prevention device according to any one of claims 1 to 4, characterized in that: The fixed baffle (1) is a fixed baffle plate.
9. The sewage backflow prevention device according to claim 8, characterized in that: The fixed baffle is circular.
10. The sewage backflow prevention device according to any one of claims 1 to 4, characterized in that: The floating component (2) and the sewage water pipe (6) are connected via a flexible joint (4).