A pipe butt sealing device for municipal sewer pipes
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN DAHONGYU CONSTR ENG CO LTD
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, flange welding connections for municipal sewer pipes are inefficient, require experienced welding technicians, and are time-consuming.
It adopts a combination structure of rubber sleeve, sleeve, connecting ring, fixing component, docking component and clamping component. Through the cooperation of bolts and nuts, the drain pipe is docked and clamped to fix it, which enhances the connection strength and sealing performance.
It improves the efficiency and sealing of sewer pipe connections, simplifies the operation process, and reduces reliance on welding technology.
Smart Images

Figure CN224551006U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewer pipe technology, and in particular to a pipe connection sealing device for municipal sewer pipes. Background Technology
[0002] For example, Chinese patent document CN222163545U discloses a pipe connection sealing structure. The movable and fixed components of the sealing connection each have a corresponding movable interface and a fixed interface. A flexible sealing gasket is connected to the end of the movable interface. A clamping member is provided on the outer side of the movable interface to apply a clamping force to the flexible sealing gasket in the axial direction of the movable interface. When the fixed interface is inserted into the flexible sealing gasket, the clamping member applies a circumferential inward clamping force to the flexible sealing gasket, causing the outer surface of the fixed interface to seal against the inner surface of the flexible sealing gasket, thus achieving a good sealing effect at the pipe connection interface.
[0003] The above-mentioned pipe connection sealing structure uses flanges to connect two sets of pipes. In the existing technology, flanges are connected to pipes by welding. Welding flanges requires experienced welding skills. In addition, welding flanges takes a lot of time, resulting in low pipe connection efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide a pipe connection sealing device for municipal sewer pipes to solve the problems and defects mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a pipe connection sealing device for municipal sewer pipes, including a sewer pipe, a rubber sleeve fitted on the outer side of the sewer pipe, a sleeve fitted on the outer wall of the rubber sleeve, a connecting ring provided on one side of the sleeve, a fixing component provided on the connecting ring for fixing the connecting ring to the outer wall of the sewer pipe, a connection component provided between the sleeve and the connecting ring for connecting two sewer pipes, and a clamping component provided on the rubber sleeve and the sleeve for clamping and fixing the rubber sleeve to the outer wall of the sewer pipe.
[0006] Preferably, the fixing assembly includes bolts B and friction blocks. Two bolts B are threadedly installed on the top and bottom of the connecting ring, and two friction blocks are respectively disposed on the bottom outer wall and top outer wall of the drain pipe. One end of each of the two bolts B contacts the two friction blocks, which can increase the friction between the friction blocks and the drain pipe, and is used to fix the connecting ring to the outer wall of the drain pipe.
[0007] Preferably, the docking assembly includes fixing bolts and fixing nuts. There are four fixing bolts, all fixedly installed on both sides of the sleeve, and the four fixing bolts are arranged in a circular array. There are eight fixing nuts, which are threaded onto the four fixing bolts in pairs. This allows the connecting ring and the drain pipe to move, enabling the two drain pipes to be inserted into the inside of the rubber sleeve.
[0008] Preferably, the clamping assembly includes two pressing plates A and B, connecting brackets, and bolts A. There are two pressing plates A and two pressing plates B, which are sleeved on the outside of the rubber sleeve. There are four connecting brackets, which are respectively fixedly installed on the outer walls of the two pressing plates A and the two pressing plates B. There are four bolts A, which are rotatably installed on the sleeve, and the four connecting brackets are threaded onto the bolts A. This assembly is used to clamp the rubber sleeve, fix the rubber sleeve to the outer wall of the drain pipe, and further increase the connection strength and sealing between the two drain pipes.
[0009] Preferably, the two pressing plates A are arranged symmetrically vertically, and the two pressing plates B are arranged symmetrically front to back, with pressing plate A and pressing plate B in contact.
[0010] Preferably, the inner top and inner bottom of the connecting ring are provided with movable grooves, and the friction block is movably installed in the movable groove.
[0011] Preferably, the connecting ring has four mounting holes, and four fixing bolts are inserted into the four mounting holes respectively.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This municipal sewer pipe connection sealing device uses a connecting ring and bolt B to press the friction block downwards, increasing the friction between the friction block and the sewer pipe. This is used to fix the connecting ring to the outer wall of the sewer pipe. Through the connection assembly, the connecting ring and the sewer pipe can be moved, allowing two sewer pipes to be inserted into the inside of the rubber sleeve, thus connecting the two sewer pipes. Then, the clamping assembly is used to clamp the rubber sleeve, fixing it to the outer wall of the sewer pipe and further increasing the connection strength and sealing between the two sewer pipes. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the drain pipe, rubber sleeve, and sleeve of this utility model;
[0017] Figure 3This is a cross-sectional view of the connecting ring of this utility model;
[0018] Figure 4 This is a schematic diagram of the clamping assembly of this utility model.
[0019] Attached reference numerals: 1. Drain pipe; 2. Rubber sleeve; 3. Sleeve; 4. Press plate A; 5. Press plate B; 6. Connecting bracket; 7. Bolt A; 8. Connecting ring; 9. Bolt B; 10. Friction block; 11. Fixing bolt; 12. Fixing nut; 13. Movable groove; 14. Mounting hole. Detailed Implementation
[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0021] Please see Figure 1-4 This utility model provides a technical solution: a pipe connection sealing device for municipal sewer pipes, including a sewer pipe 1, a rubber sleeve 2 sleeved on the outer side of the sewer pipe 1, a sleeve 3 sleeved on the outer wall of the rubber sleeve 2, a connecting ring 8 on one side of the sleeve 3, a fixing component set on the connecting ring 8 for fixing the connecting ring 8 to the outer wall of the sewer pipe 1, a connection component set between the sleeve 3 and the connecting ring 8 for connecting two sewer pipes 1, and a clamping component set on the rubber sleeve 2 and the sleeve 3 for clamping and fixing the rubber sleeve 2 to the outer wall of the sewer pipe 1.
[0022] Furthermore, the fixing assembly includes bolts B9 and friction blocks 10. Two bolts B9 are threadedly installed on the top and bottom of the connecting ring 8, respectively. Two friction blocks 10 are respectively disposed on the bottom outer wall and top outer wall of the drain pipe 1. One end of each bolt B9 contacts the two friction blocks 10. When the bolts B9 are turned with a wrench, they move and press against the friction blocks 10, increasing the friction between the friction blocks 10 and the drain pipe 1, thereby fixing the connecting ring 8 to the outer wall of the drain pipe 1.
[0023] Furthermore, the docking assembly includes fixing bolts 11 and fixing nuts 12. There are four fixing bolts 11, which are fixedly installed on both sides of the sleeve 3. The four fixing bolts 11 are arranged in a circular array. There are eight fixing nuts 12, which are threaded onto the four fixing bolts 11 in pairs. By turning the fixing nuts 12 with a hand wrench, the fixing nuts 12 push the connecting ring 8 and the drain pipe 1, which can dock the two drain pipes 1 to the inside of the rubber sleeve 2.
[0024] Furthermore, the clamping assembly includes pressing plate A4, pressing plate B5, connecting bracket 6, and bolts A7. There are two pressing plates A4 and B5, and both pressing plates A4 and B5 are sleeved on the outside of the rubber sleeve 2. There are four connecting brackets 6, which are respectively fixedly installed on the outer walls of the two pressing plates A4 and the two pressing plates B5. There are four bolts A7, which are rotatably installed on the sleeve 3, and the four connecting brackets 6 are threadedly installed on the bolts A7. By turning the bolts A7 with a wrench, the rotation of the bolts A7 drives the connecting brackets 6, pressing plates A4, and pressing plates B5 to move, so that pressing plates A4 and B5 press the rubber sleeve 2, fixing the rubber sleeve 2 to the outer wall of the drain pipe 1, and further increasing the connection strength and sealing between the two drain pipes 1.
[0025] Furthermore, the two pressing plates A4 are arranged symmetrically vertically, and the two pressing plates B5 are arranged symmetrically front to back, with pressing plates A4 and B5 in contact.
[0026] Furthermore, the inner top and inner bottom of the connecting ring 8 are provided with movable grooves 13, and the friction block 10 is movably installed in the movable grooves 13.
[0027] Furthermore, the connecting ring 8 has four mounting holes 14, and four fixing bolts 11 are respectively inserted into the four mounting holes 14.
[0028] Working principle: Hold the wrench and turn the bolt B9. When the bolt B9 is turned, it will move and press the friction block 10, increasing the friction between the friction block 10 and the drain pipe 1. This can fix the connecting ring 8 to the outer wall of the drain pipe 1. Then, hold the wrench and turn the fixing nut 12. The fixing nut 12 pushes the connecting ring 8 and the drain pipe 1, which can connect the two drain pipes 1 to the inner side of the rubber sleeve 2. Then, hold the wrench and turn the bolt A7. The rotation of the bolt A7 drives the connecting frame 6, the pressing plate A4, and the pressing plate B5 to move, so that the pressing plate A4 and the pressing plate B5 press the rubber sleeve 2, fixing the rubber sleeve 2 to the outer wall of the drain pipe 1.
[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A pipe connection sealing device for municipal sewer pipes, comprising a sewer pipe (1), a rubber sleeve (2) fitted on the outer side of the sewer pipe (1), a sleeve (3) fitted on the outer wall of the rubber sleeve (2), and a connecting ring (8) provided on one side of the sleeve (3), characterized in that, Also includes: The fixing component is provided on the connecting ring (8) to fix the connecting ring (8) to the outer wall of the drain pipe (1); The docking assembly is set between the sleeve (3) and the connecting ring (8) for connecting two drain pipes (1); The clamping assembly is provided on the rubber sleeve (2) and the sleeve (3) to clamp and fix the rubber sleeve (2) to the outer wall of the drain pipe (1).
2. The pipe connection sealing device for municipal sewer pipes according to claim 1, characterized in that: The fixing assembly includes bolts B (9) and friction blocks (10). Two bolts B (9) are threadedly installed on the top and bottom of the connecting ring (8), and two friction blocks (10) are respectively set on the bottom outer wall and top outer wall of the drain pipe (1). One end of each bolt B (9) is in contact with the two friction blocks (10).
3. A pipe connection sealing device for municipal sewer pipes according to claim 2, characterized in that: The docking assembly includes fixing bolts (11) and fixing nuts (12). There are four fixing bolts (11), which are fixedly installed on both sides of the sleeve (3). The four fixing bolts (11) are arranged in a ring array. There are eight fixing nuts (12), which are threaded onto the four fixing bolts (11) in pairs.
4. A pipe connection sealing device for municipal sewer pipes according to claim 3, characterized in that: The clamping assembly includes two pressing plates A (4), two pressing plates B (5), two connecting brackets (6), and two bolts A (7). The two pressing plates A (4) and two pressing plates B (5) are fitted on the outside of the rubber sleeve (2). There are four connecting brackets (6) respectively fixedly installed on the outer walls of the two pressing plates A (4) and the two pressing plates B (5). There are four bolts A (7) rotatably installed on the sleeve (3), and the four connecting brackets (6) are threadedly installed on the bolts A (7).
5. A pipe connection sealing device for municipal sewer pipes according to claim 4, characterized in that: The two pressing plates A (4) are arranged symmetrically from top to bottom, and the two pressing plates B (5) are arranged symmetrically from front to back. The pressing plates A (4) and B (5) are in contact.
6. A pipe connection sealing device for municipal sewer pipes according to claim 5, characterized in that: The inner top and inner bottom of the connecting ring (8) are provided with movable grooves (13), and the friction block (10) is movably installed in the movable grooves (13).
7. A pipe connection sealing device for municipal sewer pipes according to claim 6, characterized in that: The connecting ring (8) has four mounting holes (14), and four fixing bolts (11) are inserted into the four mounting holes (14) respectively.