Anti-seepage device for municipal water supply and drainage pipe
By combining magnetic ring connection and heating device, the problems of poor compatibility and low-temperature cracking of existing municipal water supply and drainage pipe seepage prevention devices are solved, achieving convenient installation and low-temperature protection.
Patent Information
- Application Number
- CN202520290131.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing municipal water supply and drainage pipe seepage prevention devices cannot be adapted to drainage pipes of different diameters, are cumbersome to install and use, and are prone to cold contraction and ice solidification under low temperature conditions, leading to cracking.
It adopts a magnetic ring connection structure and heating device, and adjusts the position of the connector by the attraction of the magnetic ring to adapt to the drain pipe of different sizes; the battery-powered heating device heats the drain pipe interface to prevent cold contraction and ice solidification.
It enables convenient installation and disassembly, adapts to different sizes of drain pipes, and prevents drain pipe joints from cracking under low temperature conditions, thus improving the applicability and stability of the device.
Smart Images

Figure CN223622487U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal engineering technology, specifically to a seepage prevention device for municipal water supply and drainage pipes. Background Technology
[0002] Municipal roads generally refer to urban roads, a general term for all kinds of roads that allow the passage of various motor vehicles, non-motor vehicles and pedestrians. During the construction of municipal roads, it is usually necessary to install rainwater and sewage drainage pipes and inspection wells, including rainwater and sewage junction wells set up due to elevation differences. After the rainwater and sewage drainage pipes pass through the inspection wells, cement mortar needs to be poured into the contact gap between the pipes and the inspection wells to prevent leakage of the drainage pipes.
[0003] The patented invention, CN219198398U, provides a seepage prevention device for municipal engineering water supply and drainage pipes. This utility model patent makes the overall municipal engineering water supply and drainage pipe seepage prevention device flexible and convenient to use, and realizes multiple seepage prevention protections at the joints of municipal engineering water supply and drainage pipes, making the water supply and drainage operation of municipal engineering water supply and drainage pipes more stable and highly practical.
[0004] In addition to the advantages mentioned above, this utility model patent still has some shortcomings: First, the anti-seepage device cannot be adapted to drainage pipes of different diameters, and its adaptability is poor. It has great limitations in installation and use, and the installation and dismantling process is relatively cumbersome. Second, in winter, due to the influence of temperature, the drainage pipe will experience cold contraction, and the water will freeze and solidify, causing the volume to expand, which can easily lead to cracking and damage at the joint of the drainage pipe. Utility Model Content
[0005] The purpose of this utility model is to provide a seepage prevention device for municipal water supply and drainage pipes to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A municipal water supply and drainage pipe seepage prevention device includes a drainage pipe body, a seepage prevention top plate installed on the outer top of the drainage pipe body, and a seepage prevention bottom plate installed on the outer bottom of the drainage pipe body. A connecting plate is fixedly connected to each of the two bottom ends of the seepage prevention top plate, and a connecting groove is opened at each of the two top ends of the seepage prevention bottom plate. The connecting groove and the connecting plate are mutually adapted. Several sets of three embedding holes are opened on one side of the connecting plate. Three connecting pieces are fixedly connected to the inner cavity of the connecting groove. A movable plate is movably connected to the outer side of the seepage prevention bottom plate, and a first magnetic ring is fixedly connected to the inner wall of the movable plate. Several heating devices are provided inside both the seepage prevention top plate and the seepage prevention bottom plate. A power supply compartment is fixedly connected to one side of both the seepage prevention top plate and the seepage prevention bottom plate.
[0008] Preferably, the top of the power supply compartment is provided with an installation groove, the inner cavity of the installation groove is equipped with a battery, the inside of the power supply compartment is provided with a power board, the power board is electrically connected to the positive and negative terminals of the battery through wires, the heating device includes a heat-conducting pipe, the inner cavity of the heat-conducting pipe is fixedly sleeved with a conductive shaft, and the outer side of the conductive shaft is electrically connected with a heating wire.
[0009] Preferably, the connector includes a sleeve, an insert block is movably fitted onto one end of the inner cavity of the sleeve, a spring is fixedly connected to the other end of the sleeve, and a second magnetic ring is fixedly connected to one end of the insert block. The corresponding surfaces of the first magnetic ring and the second magnetic ring attract each other.
[0010] Preferably, a sliding plate is movably connected to the top of the inner cavity of the mounting groove.
[0011] Preferably, one end of the conductive shaft is electrically connected to a thermistor, one end of the thermistor is in contact with the heat pipe, one end of the thermistor is provided with a contact point, and a corresponding contact groove is provided on one side of the power board.
[0012] Preferably, an anti-detachment ring is fixedly sleeved on the outer side of one end of the embedded block, and an anti-detachment groove is formed on the inner wall of the sleeve, with the outer side of the anti-detachment ring transitionally fitting with the inner wall of the anti-detachment groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. In this utility model, when the first magnetic ring is moved to the rear of the connector by moving the movable plate with external force, the position of the seepage-proof top plate and the seepage-proof bottom plate can be adjusted. After the adjustment is completed, when the first magnetic ring is moved away from the rear of the connector, the connection between the seepage-proof top plate and the seepage-proof bottom plate is kept fixed. This is beneficial for the new connection method of this device, making the installation and disassembly of the seepage-proof device more convenient, and allowing it to be adapted to be installed on drainage pipes of different sizes.
[0015] 2. In this utility model, the battery provides electrical energy, which enables the heating device to generate heat after being powered on, thereby heating the impermeable top plate and the impermeable bottom plate. Heating the drainage pipe through the impermeable top plate and the impermeable bottom plate is beneficial for heating and insulating the joint of the drainage pipe when the temperature is low, avoiding the phenomenon of water freezing and solidification and cracking caused by the cold contraction of the drainage pipe. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This utility model Figure 1 Schematic diagram of the overall structure of the waterproof roof slab;
[0018] Figure 3 This utility model Figure 2 A schematic diagram of the overall structure of the power supply compartment;
[0019] Figure 4 This utility model Figure 2 Cross-sectional view of the overall structure of the connecting component;
[0020] Figure 5 This utility model Figure 2 A schematic diagram of the overall structure of the heating device;
[0021] In the diagram: 1. Drainage pipe body; 2. Seepage-proof top plate; 3. Seepage-proof bottom plate; 4. Power supply compartment; 5. Connector; 6. Heating device; 21. Connecting plate; 22. Embedded hole; 31. Connecting groove; 32. Movable plate; 33. First magnetic ring; 41. Power board; 42. Mounting groove; 43. Battery; 44. Slide plate; 51. Sleeve; 52. Embedded block; 53. Spring; 54. Second magnetic ring; 55. Anti-detachment ring; 56. Anti-detachment groove; 61. Heat-conducting pipe; 62. Conductive shaft; 63. Heating wire; 64. Thermistor. Detailed Implementation
[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0023] Please see Figure 1-2 This utility model provides a technical solution:
[0024] A municipal water supply and drainage pipe seepage prevention device includes a drainage pipe body 1, a seepage prevention top plate 2 installed on the outer top of the drainage pipe body 1, and a seepage prevention bottom plate 3 installed on the outer bottom of the drainage pipe body 1. A connecting plate 21 is fixedly connected to each of the two bottom ends of the seepage prevention top plate 2, and a connecting groove 31 is opened at each of the two top ends of the seepage prevention bottom plate 3. The connecting groove 31 and the connecting plate 21 are mutually adapted. A number of sets of three embedding holes 22 are opened on one side of the connecting plate 21. A number of three connecting pieces 5 are fixedly connected to the inner cavity of the connecting groove 31. A movable plate 32 is movably connected to the outer side of the seepage prevention bottom plate 3. A first magnetic ring 33 is fixedly connected to the inner wall of the movable plate 32. A number of heating devices 6 are provided inside the seepage prevention top plate 2 and the seepage prevention bottom plate 3. A power supply compartment 4 is fixedly connected to one side of the seepage prevention top plate 2 and the seepage prevention bottom plate 3.
[0025] In this embodiment, please refer to Figure 3 , Figure 5 The top of the power supply compartment 4 is provided with an installation groove 42, and a battery 43 is installed in the inner cavity of the installation groove 42. The power supply compartment 4 is provided with a power board 41, which is electrically connected to the positive and negative terminals of the battery 43 through wires. The heating device 6 includes a heat-conducting pipe 61, and a conductive shaft 62 is fixedly sleeved in the inner cavity of the heat-conducting pipe 61. A heating wire 63 is electrically connected to the outer side of the conductive shaft 62.
[0026] In this embodiment, please refer to Figure 4 The connector 5 includes a sleeve 51, with an insert block 52 movably fitted onto one end of the inner cavity of the sleeve 51. A spring 53 is fixedly connected to the other end of the sleeve 51. A second magnetic ring 54 is fixedly connected to one end of the insert block 52. The corresponding surfaces of the first magnetic ring 33 and the second magnetic ring 54 attract each other, which is beneficial when the first magnetic ring 33 moves to the rear of the second magnetic ring 54, generating a suction force that causes the second magnetic ring 54 to move backward. The rearward movement of the second magnetic ring 54 drives the insert block 52 to move backward. The rearward movement of the insert block 52 compresses the spring 53, causing it to deform. When the first magnetic ring 33 leaves the rear of the second magnetic ring 54, the suction force disappears, causing the spring 53 to lose pressure and gradually return to its original shape. Thus, when the spring 53 lifts the insert block 52, it moves forward and returns to its original position.
[0027] In this embodiment, please refer to Figure 3 A sliding plate 44 is movably connected to the top of the inner cavity of the mounting slot 42, which facilitates the removal of the battery 43 from the mounting slot 42 by moving the sliding plate 44, making it easy to replace the depleted battery 43.
[0028] In this embodiment, please refer to Figure 3 , Figure 5 One end of the conductive shaft 62 is electrically connected to a thermistor 64. One end of the thermistor 64 is in contact with the heat pipe 61. One end of the thermistor 64 is provided with a contact point. A matching contact groove is provided on one side of the power board 41. This facilitates the conduction of current to the interior of the heating device 6 through the contact point and the contact groove. At the same time, when the temperature of the heat pipe 61 rises, the temperature of the thermistor 64 also rises. As the temperature of the thermistor 64 rises, its internal resistance increases, thereby reducing the current conducted to the heating wire 63 and slowing down the temperature rise of the heating wire 63. This controls the temperature of the seepage-proof top plate 2 and seepage-proof bottom plate 3, preventing them from overheating and causing damage to the drainage pipe.
[0029] In this embodiment, please refer to Figure 4 An anti-detachment ring 55 is fixedly sleeved on the outer side of one end of the embedded block 52. An anti-detachment groove 56 is provided on the inner wall of the sleeve 51. The outer side of the anti-detachment ring 55 is transitionally fitted with the inner wall of the anti-detachment groove 56. This is beneficial because when the embedded block 52 moves back and forth along the inner cavity of the sleeve 51, the anti-detachment ring 55 also moves back and forth along the inner wall of the anti-detachment groove 56 at the same time. Through the transitional fit between the anti-detachment ring 55 and the anti-detachment groove 56, the embedded block 52 can be prevented from detaching from the inner cavity of the sleeve 51.
[0030] Working principle of this utility model:
[0031] Step 1: In this utility model, the movable plate 32 is moved along the outer side of the seepage-proof bottom plate 3 by external force, thereby adjusting the position of the first magnetic ring 33. When the first magnetic ring 33 is moved to the rear of the connector 5 and corresponds one-to-one with the connector 5, the corresponding surfaces of the first magnetic ring 33 and the second magnetic ring 54 attract each other, causing the second magnetic ring 54 to move backward. The backward movement of the second magnetic ring 54 drives the embedded block 52 to move backward. The backward movement of the embedded block 52 compresses the spring 53, causing it to deform. The backward movement of the embedded block 52 causes it to leave the inner cavity of the embedded hole 22, thereby allowing the mating plate 21 to engage with the connector. When the connection of the groove 31 is disconnected, the position of the docking plate 21 can be adjusted by moving the top plate 2 of the seepage prevention plate. After adjusting the annular diameter formed by the top plate 2 and the bottom plate 3 of the seepage prevention plate to a suitable size, the movable plate 32 is moved again so that the first magnetic ring 33 moves away from the rear of the connector 5, so that the attraction between the first magnetic ring 33 and the second magnetic ring 54 disappears, so that the spring 53 loses pressure and gradually returns to its original state, thereby lifting the embedded block 52 and moving it forward. By moving the embedded block 52 forward, it enters the inner cavity of the embedded hole 22 in front of it, so that the position of the docking plate 21 is fixed again, so that the seepage prevention device can be installed on drainage pipes of different sizes.
[0032] Step 2: In this utility model, a battery 43 is provided to supply electrical energy, energizing the power board 41. The contact groove on the surface of the power board 41 connects to a contact point at one end of the thermistor 64, conducting current to the thermistor 64. The thermistor 64 then conducts the current to the conductive shaft 62, which in turn conducts it to the heating wire 63. When the current passes through the resistance inside the heating wire 63, it generates heat, causing the temperature of the heating wire 63 to rise rapidly. This heat is then transferred to the heat pipe 61, and the increased temperature of the heat pipe 61 conducts the heat to the interior of the impermeable top plate 2 and the impermeable bottom plate 3, raising their temperatures. This heats and insulates the joint of the drainage pipe, preventing it from contracting due to cold, causing water to freeze and potentially rupture.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A municipal water supply and drainage pipe seepage prevention device, comprising a drainage pipe body (1), characterized in that: A seepage-proof top plate (2) is installed on the outer side of the top of the main body (1) of the drainage pipe, and a seepage-proof bottom plate (3) is installed on the outer side of the bottom of the main body (1). A docking plate (21) is fixedly connected to both ends of the bottom of the seepage-proof top plate (2), and a docking groove (31) is opened at both ends of the top of the seepage-proof bottom plate (3). The docking groove (31) and the docking plate (21) are adapted to each other. A number of three sets of embedding holes (22) are opened on one side of the docking plate (21). A number of three connecting pieces (5) are fixedly connected to the inner cavity of the docking groove (31). A movable plate (32) is movably connected to the outer side of the seepage-proof bottom plate (3). A first magnetic ring (33) is fixedly connected to the inner wall of the movable plate (32). A number of heating devices (6) are provided inside the seepage-proof top plate (2) and the seepage-proof bottom plate (3). A power supply compartment (4) is fixedly connected to one side of the seepage-proof top plate (2) and the seepage-proof bottom plate (3).
2. The municipal water supply and drainage pipe seepage prevention device according to claim 1, characterized in that: The top of the power supply compartment (4) is provided with an installation groove (42), and a battery (43) is installed in the inner cavity of the installation groove (42). The power supply compartment (4) is provided with a power board (41), and the power board (41) is electrically connected to the positive and negative terminals of the battery (43) through wires. The heating device (6) includes a heat-conducting pipe (61), and a conductive shaft (62) is fixedly sleeved in the inner cavity of the heat-conducting pipe (61). A heating wire (63) is electrically connected to the outer side of the conductive shaft (62).
3. A municipal water supply and drainage pipe seepage prevention device according to claim 1, characterized in that: The connector (5) includes a sleeve (51), an insert block (52) is movably sleeved at one end of the inner cavity of the sleeve (51), a spring (53) is fixedly connected at the other end of the sleeve (51), and a second magnetic ring (54) is fixedly connected at one end of the insert block (52). The corresponding surfaces of the first magnetic ring (33) and the second magnetic ring (54) attract each other.
4. A municipal water supply and drainage pipe seepage prevention device according to claim 2, characterized in that: A sliding plate (44) is movably connected to the top of the inner cavity of the mounting groove (42).
5. A municipal water supply and drainage pipe seepage prevention device according to claim 2, characterized in that: One end of the conductive shaft (62) is electrically connected to a thermistor (64), one end of the thermistor (64) is in contact with the heat pipe (61), one end of the thermistor (64) is provided with a contact point, and a corresponding contact groove is provided on one side of the power board (41).
6. A municipal water supply and drainage pipe seepage prevention device according to claim 3, characterized in that: An anti-detachment ring (55) is fixedly sleeved on the outer side of one end of the embedded block (52), and an anti-detachment groove (56) is provided on the inner wall of the sleeve (51). The outer side of the anti-detachment ring (55) and the inner wall of the anti-detachment groove (56) are transitionally fitted.
Citation Information
Patent Citations
Anti-seepage device for municipal engineering water supply and drainage pipe
CN219198398U