Backflow prevention structure of municipal sewage pipeline
By designing a reverse flow prevention device activated by using water flow power in municipal sewage pipelines, the problem of sewage backflow is solved, and the sealing effect is achieved without external force sources, ensuring the cleanliness of municipal road environment.
Patent Information
- Application Number
- CN202420963642.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-07
AI Technical Summary
Traditional municipal sewage pipelines lack a backflow prevention mechanism, which leads to easy reflux of sewage and affects the road environment.
A municipal sewage pipe anti-reflow structure including a first anti-reflow device and a second anti-reflow device is designed, and the opening and closing of the anti-reflow plate is activated by using water flow power. Through the coordination of the torsion spring and the limiting plate, no external force source is achieved. to ensure sealing effect.
It effectively avoids the backflow of sewage in sewage pipes, ensures that sewage does not gush out of municipal road manhole covers, and improves the sealing and reliability of the drainage system.
Smart Images
Figure CN222206673U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of municipal drainage, in particular to an anti-backflow structure of a municipal sewage pipe. Background Art
[0002] Municipal drainage pipes refer to rainwater and sewage pipes under municipal roads, commonly known as "sewer pipes", and are usually called municipal drainage pipes in engineering. However, traditional municipal sewage pipes lack anti-backflow mechanisms during use, and sewage in the sewage pipes is prone to backflow, which in turn causes sewage to gush out of manhole covers on municipal roads, affecting the road environment.
[0003] Prior art, such as the anti-backflow structure of the municipal sewage pipe with application number 202321611778.7, includes a connecting pipe, a limiting ring is fixedly connected to the middle position of the inner wall of the connecting pipe, a flow prevention plate is penetrated and slidably connected to the right side of the limiting ring, a sliding column is penetrated and slidably connected to the fixed sleeve, a reset part is fixedly connected to the left side of the fixed sleeve, and a first sealing ring and a second sealing ring are respectively penetrated and fixedly connected to the left and right sides of the outer diameter of the flow prevention plate; the flow prevention plate slides into the limiting ring under the action of the self-rebound force of the telescopic spring, and is blocked by the limiting ring, so that the sewage flowing into the municipal pipe on the right side cannot circulate, and the first sealing ring and the second sealing ring are further slid into the sealing groove, and at the same time, the negative magnetic ring and the positive magnetic ring are closely fitted together under the action of the magnetic suction, which plays a good sealing role and more effectively prevents the sewage discharged from the municipal pipe from flowing back from the joints of the device.
[0004] In the above-mentioned patent, the telescopic spring slides into the limit circle under the action of its own rebound force and is blocked by the limit circle, so that the sewage flowing into the municipal pipe on the right cannot flow. After long-term work and corrosion, the telescopic spring has insufficient spring force, which may lead to the inability to close, thereby causing the sewage in the sewage pipe to flow back. Utility Model Content
[0005] The utility model aims to solve the above technical problems and provides a backflow prevention structure for a municipal sewage pipe.
[0006] In order to solve the above technical problems, the technical solution provided by the utility model is:
[0007] A backflow prevention structure for a municipal sewage pipe comprises a connecting pipe in which a first backflow prevention device and a second backflow prevention device are installed;
[0008] The first backflow prevention device comprises a first flow prevention plate rotatably connected to the connecting pipe, and a first flow guide plate is installed in the connecting pipe and on one side of the first flow prevention plate;
[0009] The second backflow prevention device comprises a second flow prevention plate which is arranged in a mirror image on the hinged connecting pipe at a side of the first flow prevention plate away from the first guide plate;
[0010] A limiting plate and a limiting block are installed in the communicating pipe and on both sides of the second flow prevention plate.
[0011] Preferably, the first guide plate is arranged at an angle and the angle opening faces the first guide plate.
[0012] Preferably, a limiting tube is disposed off-axis on one side of the first flow prevention plate, a shaft is installed in the connecting tube and the shaft is inserted into the limiting tube, a torsion spring is installed between the shaft and the limiting tube, and two ends of the torsion spring are respectively connected to the shaft and the limiting tube.
[0013] Preferably, the limiting plate is in a "<" structure and its opening faces the second flow prevention plates, and two ends of the limiting plate abut against one side of the two second flow prevention plates.
[0014] Preferably, a limiting column is installed in the connecting pipe to resist the first flow prevention plate.
[0015] Preferably, a second flow guide plate is installed on a side of the first flow prevention plate away from the first flow guide plate.
[0016] Preferably, flanges are installed at both ends of the connecting pipe.
[0017] Preferably, the cross section of the limit block is a trapezoidal structure.
[0018] After adopting the above structure, the utility model has the following advantages:
[0019] The utility model uses the power of the water flow itself to start the opening and closing of the first anti-backflow device and the second anti-backflow device, realizes driving without an external force source, plays a good sealing role, and more effectively avoids sewage discharged from municipal pipes, ensuring that sewage will not gush out of the manhole covers on municipal roads.
[0020] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a structural schematic diagram of the utility model.
[0023] Figure 2 It is an internal schematic diagram of the utility model.
[0024] Figure 3 It is an internal diagram of the utility model when the water flow is normal.
[0025] Figure 4 It is an internal diagram of the utility model when water flows back.
[0026] As shown in the figure: 1. connecting pipe; 2. first anti-backflow device; 3. second anti-backflow device; 4. first anti-flow plate; 5. first guide plate; 6. second anti-flow plate; 7. limiting plate; 8. limiting block; 9. limiting column; 10. second guide plate; 11. flange; 12. limiting pipe. DETAILED DESCRIPTION
[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0028] In the description of this application, 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0029] The utility model is further described in detail below in conjunction with the full text.
[0030] Combined with Figure 1-Figure 4 A backflow prevention structure for a municipal sewage pipe includes a connecting pipe 1, in which a first backflow prevention device 2 and a second backflow prevention device 3 are installed. The device prevents the sewage in the sewage pipe from backflowing through the first backflow prevention device 2 and the second backflow prevention device 3, thereby causing sewage to gush out of manhole covers on municipal roads and affect the road environment.
[0031] When the utility model is implemented, Figure 2 , Figure 3 and Figure 4As shown, the first backflow prevention device 2 includes a first anti-flow plate 4 rotatably connected to the connecting pipe 1, a first guide plate 5 is installed in the connecting pipe 1 and on one side of the first anti-flow plate 4, the first guide plate 5 is set at an angle and the angle opening is facing the first guide plate 5, a limit tube 12 is eccentrically arranged on one side of the first anti-flow plate 4, a shaft is installed in the connecting pipe 1 and the shaft is inserted into the limit tube 12, a torsion spring is installed between the shaft and the limit tube 12, and the two ends of the torsion spring are respectively connected to the shaft and the limit tube 12. Under normal circumstances, water flows from left to right, as shown in FIG. Figure 3 As shown, water flows through the obstruction of the first guide plate 5, first enters the first guide plate 5, and then pushes the first anti-flow plate 4 to rotate from the bottom, and the torsion spring works, thereby opening the first anti-flow plate 4 to achieve normal water flow. When the sewage in the sewage pipe flows back, the water flows from right to left, the torsion spring resets, pushes the first anti-flow plate 4 to rotate and reset, and then blocks the connecting pipe 1 to prevent backflow.
[0032] When the utility model is implemented, Figure 2 , Figure 3 and Figure 4 As shown, the second backflow prevention device 3 includes a second flow prevention plate 6 which is arranged in a mirror image on the side of the first flow prevention plate 4 away from the first guide plate 5 and is hinged to the connecting pipe 1. A limit plate 7 and a limit block 8 are installed in the connecting pipe 1 and on both sides of the second flow prevention plate 6. Under normal circumstances, the water flows from left to right. Figure 3 As shown, after passing through the first anti-backflow device 2, the two second anti-flow plates 6 are pushed open to realize normal water flow. When the sewage in the sewage pipe flows back, the water flows from right to left, first pushing the two second anti-flow plates 6 to reset, then blocking the connecting pipe 1, and then the first anti-backflow device 2 is reset, realizing two ways of anti-backflow.
[0033] like Figure 2 As shown, the limit plate 7 is in a "<" structure and its opening faces the second anti-flow plate 6. The two ends of the limit plate 7 are against one side of the two second anti-flow plates 6. The limit plate 7 can block the two second anti-flow plates 6 when the sewage in the sewage pipe flows back, thereby blocking the connecting pipe 1. The cross-section of the limit block 8 is a trapezoidal structure. The limit block 8 can control the maximum rotation degree of the two second anti-flow plates 6 in normal water flow. When the sewage in the sewage pipe flows back, the sewage can impact the two second anti-flow plates 6 to complete the sealing of the connecting pipe 1.
[0034] A limiting column 9 is installed in the connecting pipe 1 to resist the first flow prevention plate 4, and a second flow guide plate 10 is installed on the side of the first flow prevention plate 4 away from the first flow guide plate 5. When the sewage in the sewage pipe flows back, the limiting column 9 blocks the first flow prevention plate 4 to block the connecting pipe 1, and the second flow guide plate 10 buffers the backflowing sewage.
[0035] Flanges 11 are installed at both ends of the connecting pipe 1, and the flanges 11 are used for installing and connecting the device with the municipal sewage pipeline.
[0036] The working principle of this utility model:
[0037] Under normal circumstances, water flows through the first guide plate 5, first enters the first guide plate 5, and then pushes the first anti-flow plate 4 to rotate from below, the torsion spring works, thereby opening the first anti-flow plate 4, and the water flows from left to right, and then pushes the two second anti-flow plates 6 to open. Figure 3 As shown, when the sewage in the sewage pipe flows back, the water flows from right to left, first pushing the two second anti-flow plates 6 to reset, then blocking the connecting pipe 1, and at the same time the torsion spring resets, pushing the first anti-flow plate 4 to rotate and reset, playing a good sealing role, more effectively preventing sewage from being discharged from the municipal pipeline, and ensuring that sewage will not gush out of the manhole covers on the municipal road surface. Under the action of water pressure, the first anti-flow plate 4 will be pushed to rotate, and then the sewage will be discharged normally.
[0038] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.
Claims
1. A backflow prevention structure for a municipal sewage pipe, comprising a connecting pipe (1), characterized in that: The connecting pipe (1) is provided with a first backflow prevention device (2) and a second backflow prevention device (3); The first backflow prevention device (2) comprises a first flow prevention plate (4) rotatably connected to the connecting pipe (1), and a first flow guide plate (5) is installed in the connecting pipe (1) and on one side of the first flow prevention plate (4); The second backflow prevention device (3) comprises a second flow prevention plate (6) which is arranged in a mirror image on a side of the first flow prevention plate (4) away from the first flow guide plate (5) and is hingedly connected to the connecting pipe (1); A limit plate (7) and a limit block (8) are installed in the connecting pipe (1) and on both sides of the second flow prevention plate (6).
2. The anti-backflow structure of a municipal sewage pipe according to claim 1, characterized in that: The first guide plate (5) is arranged at an angle, and the opening of the angle faces the first guide plate (5).
3. The anti-backflow structure of a municipal sewage pipe according to claim 1, characterized in that: A limiting tube (12) is disposed off-axis on one side of the first flow prevention plate (4); a shaft is installed in the connecting tube (1) and the shaft is inserted into the limiting tube (12); a torsion spring is installed between the shaft and the limiting tube (12); and two ends of the torsion spring are respectively connected to the shaft and the limiting tube (12).
4. The anti-backflow structure of a municipal sewage pipe according to claim 1, characterized in that: The limiting plate (7) is in a "<" structure and its opening faces the second flow prevention plates (6); the two ends of the limiting plate (7) abut against one side of the two second flow prevention plates (6).
5. The anti-backflow structure of a municipal sewage pipe according to claim 1, characterized in that: A limiting column (9) is installed in the connecting pipe (1) and abuts against the first flow prevention plate (4).
6. The anti-backflow structure of a municipal sewage pipe according to claim 1, characterized in that: A second flow guide plate (10) is installed on a side of the first flow prevention plate (4) away from the first flow guide plate (5).
7. The anti-backflow structure of a municipal sewage pipe according to claim 1, characterized in that: Flanges (11) are installed at both ends of the connecting pipe (1).
8. The anti-backflow structure of a municipal sewage pipe according to claim 1, characterized in that: The cross section of the limiting block (8) is a trapezoidal structure.