Water supply and drainage pipeline anti-seepage device
By using a multi-stage sealing design of airbag rings at the connection of the water supply and drainage pipes, the leakage risk during pipe docking is solved, and a more efficient sealing effect is achieved.
Patent Information
- Application Number
- CN202422679383.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-11-04
AI Technical Summary
The existing municipal water supply and drainage pipes for municipal construction have a risk of leakage when docking, especially when the water flow is impacted or the pipeline is shaking, the traditional sealing ring cannot provide sufficient pressure bearing capacity.
The connection method of the connecting pipe and the docking pipe is adopted, and an annular groove and an airbag ring are provided on the outer periphery of the connecting pipe. The airbag ring is kept in a deflated state during the docking process, which is convenient for docking. After completion, the airbag ring is expanded through the inflatable structure, which is closely fitted to the gap between the connecting pipe and the docking pipe, forming a multi-stage seal.
It effectively prevents leakage problems caused by water flow impact, pipe shaking or axis deflection, and significantly improves the sealing effect. The outward expansion pressure of the airbag ring is much greater than the deformation pressure of the traditional rubber seal ring.
Smart Images
Figure CN223178360U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of municipal pipeline engineering, in particular to an anti-seepage device for water supply and drainage pipelines. Background Art
[0002] The water supply and drainage pipelines in municipal engineering are pipeline system projects that transport and distribute industrial water supply and drinking water, and collect, transport and discharge industrial wastewater, domestic sewage and rainwater. The water supply and drainage pipeline anti-seepage equipment is a device that assists in encrypting the ports where the water supply and drainage pipelines are connected during the municipal construction process, thereby effectively preventing water from seeping out from the connections between the water supply and drainage pipelines.
[0003] When existing municipal construction water supply and drainage pipes are butt-jointed and installed, a sealing ring is usually installed at the tail end of the pipe, and then another pipe is inserted into the pipe where the sealing ring is installed. However, the following problems exist.
[0004] 1. The sealing ring is sealed by axial compression. Once the amount of water flowing through the pipe changes, a large impact force is generated, which causes the pipe to shake. The axes of the two connected pipes are slightly deflected, which will cause leakage at the pipe connection.
[0005] 2. If the pipes are connected by socket and splice, and a sealing ring is installed on the outer wall of the inner pipe, the diameter of the sealing ring needs to be slightly larger than the inner diameter of the outer pipe. The sealing is achieved by the deformation of the sealing ring during the socket and splice. Simply relying on the deformation of the sealing ring cannot provide sufficient pressure-bearing capacity. When the water pressure in the pipeline is high, there is still a high risk of leakage.
[0006] The existing technology cannot solve the above technical problems. Utility Model Content
[0007] The utility model aims to solve the problem of leakage risk when pipes are butted together in the prior art, and proposes an anti-seepage device for water supply and drainage pipes.
[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0009] A water supply and drainage pipeline anti-seepage device includes a connecting pipe for connecting the pipes, a mounting ring is provided in the middle of the connecting pipe, and sealing connection mechanisms are symmetrically provided at both ends of the mounting ring, and the sealing connection mechanisms include:
[0010] Multiple airbag rings are installed in the ring grooves that are evenly distributed along the axial direction of the connecting pipe.
[0011] A threaded pipe is fixedly mounted on the side wall of the mounting ring and is coaxial with the connecting pipe, and a chamber for connecting the connecting pipe is formed between the connecting pipe and the threaded pipe;
[0012] A locking ring, threadedly connected to a threaded pipe, and a fixing structure for clamping a butt joint pipe is provided between the locking ring and the threaded pipe;
[0013] An inflation structure capable of cooperating with the locking ring to inflate the airbag ring.
[0014] Preferably, the airbag ring does not exceed the ring groove in the deflated state, and the airbag ring will expand beyond the ring groove after inflation.
[0015] Preferably, the outer diameter of the connecting pipe is adapted to the inner diameter of the butt joint pipe, and the end face of the connecting pipe has an inclined chamfer.
[0016] Preferably, the fixing structure includes a pressing block slidably arranged radially on the threaded pipe, a pressing groove is formed in the locking ring, the end of the pressing block extends into the pressing groove, one end of the pressing block close to the pressing groove is a slope, and the pressing groove is an inclined surface adapted to the slope of the pressing block.
[0017] Preferably, the diameter of the pressing groove near the mounting ring is larger than the diameter of the end far from the mounting ring.
[0018] Preferably, a flat opening for cooperating with a tool to apply force is provided on the outer wall of the locking ring.
[0019] Preferably, the inflation structure includes a plurality of inflation chambers arranged in the mounting ring, the plurality of inflation chambers are respectively communicated with different airbag rings through air channels, a piston is slidably arranged in the inflation chamber in a sealed manner, a push column is installed at one end of the piston close to the locking ring, and a spring is arranged between the piston and the inner wall of the inflation chamber so that the push column abuts against the side wall of the locking ring.
[0020] The utility model has the following beneficial effects:
[0021] The anti-seepage device for water supply and drainage pipelines of the utility model realizes dynamic sealing after butt joint by using a connecting pipe to perform socket connection with a butt joint pipe, and arranging a ring groove and an airbag ring on the outer periphery of the connecting pipe. The airbag ring remains in a deflated state during the butt joint process, which is convenient for the smooth butt joint of the connecting pipe and the butt joint pipe. After the butt joint is completed, the airbag ring is inflated through the inflation structure, so that it expands and closely fits the gap between the connecting pipe and the butt joint pipe.
[0022] The utility model effectively prevents leakage problems caused by water flow impact, pipeline shaking or axis deviation, etc. The design of inflating and expanding after the airbag ring is inserted, and its outward expansion pressure is much greater than the deformation pressure of the traditional rubber sealing ring directly inserted, thus significantly improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0024] Figure 2 Schematic cross-sectional structure diagram of the present utility model;
[0025] Figure 3 Schematic front view structure diagram of the present utility model;
[0026] Figure 4 is Figure 2 Partial enlarged schematic diagram.
[0027] The meanings of the reference numerals are as follows: 1, connecting pipe; 11, inclined chamfer; 2, airbag ring; 3, mounting ring; 4, threaded pipe; 41, abutting block; 5, locking ring; 51, pressing groove; 52, flat mouth; 6, inflation structure; 61, inflation cavity; 62, air duct; 63, piston; 64, push column; 65, spring; 7, docking pipe. Specific embodiments
[0028] Next, in combination with the drawings of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described.
[0029] As Figures 1-4 , a water supply and drainage pipeline anti-seepage device includes a connecting pipe 1 for connecting a docking pipe 7. The outer diameter of the connecting pipe 1 is adapted to the inner diameter of the docking pipe 7, and the outer diameter of the connecting pipe 1 is smaller than the inner diameter of the docking pipe 7. During installation, the connecting pipe 1 and the docking pipe 7 are docked in a socket manner, and the end face of the connecting pipe 1 has an inclined chamfer 11. The inclined chamfer 11 is beneficial to the insertion of the connecting pipe 1 into the docking pipe 7. The inclined chamfer 11 plays a certain guiding role, making it easier to align and insert, and reducing the difficulties and complexities during the installation process.
[0030] An installation ring 3 is provided in the middle of the connecting pipe 1. Sealing connection mechanisms are symmetrically arranged at both ends of the installation ring 3. The two groups of sealing connection mechanisms are respectively connected to the docking pipes 7 to be docked, ensuring the stability and tightness of the docking. The sealing connection mechanism includes a threaded pipe 4, a locking ring 5, an inflation structure 6 and a plurality of airbag rings 2. The locking ring 5 and the threaded pipe 4 are used in cooperation for fixation, and at the same time, the inflation structure 6 inflates the airbag rings 2 to make the airbag rings 2 expand to achieve multi-stage sealing.
[0031] A plurality of airbag rings 2 are installed in the annular grooves evenly distributed at equal intervals along the axial direction of the connecting pipe 1. In the deflated state, the airbag rings 2 do not protrude beyond the annular grooves. After the airbag rings 2 are inflated, they will expand and protrude beyond the annular grooves. The airbag rings 2 remain in the deflated state during the docking process, which facilitates the smooth docking of the connecting pipe 1 and the docking pipeline 7. After the docking is completed, the airbag rings 2 are inflated through the inflation structure 6 so that they expand and closely fit the gap between the connecting pipe 1 and the docking pipeline 7, effectively preventing leakage problems caused by water flow impact, pipeline shaking, or axis deviation, etc. For traditional fixed rubber rings, in order to ensure the smooth progress of socket connection, the thickness of the rubber ring cannot be designed too large, so only part of the sealing effect has to be sacrificed. In this anti-seepage device, the design of inflating and expanding after the airbag rings 2 are inserted, and the outward expansion pressure is much greater than the deformation pressure of direct socket connection of traditional rubber sealing rings, thus significantly improving the sealing effect.
[0032] The threaded pipe 4 is fixedly installed by welding on the side wall of the mounting ring 3 and is coaxial with the connecting pipe 1. A chamber for the docking pipeline 7 to be inserted is formed between the connecting pipe 1 and the threaded pipe 4. During installation, the docking pipeline 7 is inserted into the chamber until it abuts against the side wall of the mounting ring 3.
[0033] The locking ring 5 is threadedly connected to the threaded pipe 4. A fixing structure for clamping the docking pipeline 7 is arranged between the locking ring 5 and the threaded pipe 4. By rotating the locking ring 5, the locking ring 5 axially displaces along the threaded pipe under the action of the thread, controlling the fixing structure to apply a clamping force to the outer wall of the docking pipeline 7 to achieve fixation. A flat opening 52 for cooperating with a tool to apply force is arranged on the outer wall of the locking ring 5. Through the design of the flat opening 52, tools such as wrenches can be used to rotate the locking ring 5 to ensure the stability of installation. The fixing structure includes a pressing block 41 radially slidably arranged on the threaded pipe 4. A pressing groove 51 is formed in the locking ring 5. The pressing groove 51 is an annular groove. The end of the pressing block 41 extends into the pressing groove 51. When the locking ring 5 rotates, the circumferential position change between the pressing groove 51 and the pressing block 41 does not affect the state of the pressing block 41. One end of the pressing block 41 close to the pressing groove 51 is an inclined surface, and the pressing groove 51 is an inclined surface adapted to the inclined surface of the pressing block 41. When the locking ring 5 moves axially, the relative position of the inclined surfaces of the pressing groove 51 and the pressing block 41 changes, controlling the radial movement of the pressing block 41. The diameter of the pressing groove 51 near the mounting ring 3 is larger than the diameter of the end far from the mounting ring 3. When the locking ring 5 moves towards the mounting ring 3 side, the pressing groove 51 continuously applies pressure to the pressing block 41, causing the pressing block 41 to press the docking pipeline 7 radially, so that a plurality of pressing blocks 41 clamp and fix the docking pipeline 7 simultaneously.
[0034] Such as Figure 2 、 Figure 4As shown in the figure, the inflatable structure 6 can cooperate with the locking ring 5 to inflate the airbag ring 2. The inflatable structure 6 includes a plurality of inflatable chambers 61 provided in the mounting ring 3. The plurality of inflatable chambers 61 are respectively communicated with different airbag rings 2 through air ducts 62. A piston 63 is slidably arranged in the inflatable chamber 61 in a sealed manner. When the piston 63 moves in the inflatable chamber 61, the air pressure in the airbag ring 2 will be changed through the air duct 62. A push column 64 is fixedly installed at one end of the piston 63 close to the locking ring 5. And a spring 65 is arranged between the piston 63 and the inner wall of the inflatable chamber 61. One end of the spring 65 is fixed to the inner wall of the inflatable chamber 61, and the other end of the spring 65 is fixed to the piston 63, so that the push column 64 abuts against the side wall of the locking ring 5. When the locking ring 5 moves towards the mounting ring 3 for fixation, the locking ring 5 will push the push column 64 to move, so that the piston 63 moves in the inflatable chamber 61, pressurizes the airbag ring 2, makes the airbag ring 2 expand, and the plurality of airbag rings 2 increase synchronously. And the air injection process of the airbag ring 2 is carried out after the socket connection is completed, realizing multi-stage sealing, not affecting the socket connection at the same time, significantly improving the sealing effect and reducing the risk of leakage.
[0035] The working process of the present utility model is as follows:
[0036] During docking, the locking ring 5 is located at one end of the threaded pipe 4 away from the mounting ring 3. The connecting pipe 1 and the docking pipe 7 are docked in a socket connection manner. The docking pipe 7 is inserted into the chamber until it abuts against the side wall of the mounting ring 3. The airbag ring 2 remains deflated during the docking process, which is convenient for the smooth docking of the connecting pipe 1 and the docking pipe 7. After the docking is completed, by rotating the locking ring 5, the locking ring 5 moves towards the mounting ring 3 under the action of the thread. The abutting groove 51 continuously applies pressure to the abutting block 41, so that the abutting block 41 presses the docking pipe 7 radially, so that the plurality of abutting blocks 41 clamp and fix the docking pipe 7 at the same time. At the same time, the locking ring 5 will push the push column 64 to move, so that the piston 63 moves in the inflatable chamber 61, pressurizes the airbag ring 2, makes the airbag ring 2 expand, and the plurality of airbag rings 2 increase synchronously, making it expand and closely fit the gap between the connecting pipe 1 and the docking pipe 7, effectively preventing leakage problems caused by water flow impact, pipe shaking or axis deviation, etc.
Claims
1. A water supply and drainage pipeline anti-seepage device, comprising a connecting pipe (1) for connecting and docking pipelines (7), characterized in that, The middle of the connecting pipe (1) is provided with a mounting ring (3). Sealing connection mechanisms are symmetrically arranged at both ends of the mounting ring (3). The sealing connection mechanism includes: a plurality of airbag rings (2), a threaded pipe (4), a locking ring (5), and an inflation structure (6); the plurality of airbag rings (2) are installed in annular grooves evenly distributed along the axial direction of the connecting pipe (1). The threaded pipe (4) is fixedly installed on the side wall of the mounting ring (3) and is coaxial with the connecting pipe (1). The outer wall of the threaded pipe (4) is threadedly connected with the locking ring (5). A chamber for inserting and docking a docking pipe (7) is provided between the threaded pipe (4) and the connecting pipe (1). A fixing structure for clamping the docking pipe (7) is provided between the threaded pipe (4) and the locking ring (5), and the inflation structure (6) can cooperate with the locking ring (5) to expand the airbag rings (2).
2. The anti-seepage device for water supply and drainage pipes according to claim 1, characterized in that, In the deflated state, the airbag rings (2) do not protrude beyond the annular grooves, and the airbag rings (2) will expand and protrude beyond the annular grooves after being inflated.
3. The anti-seepage device for water supply and drainage pipelines according to claim 1, characterized in that, The fixing structure includes a pressing block (41) slidably arranged radially on the threaded pipe (4). A pressing groove (51) is formed in the locking ring (5), and the end of the pressing block (41) extends into the pressing groove (51). One end of the pressing block (41) close to the pressing groove (51) is a bevel surface, and the pressing groove (51) is provided with an inclined surface adapted to the bevel surface of the pressing block (41).
4. A water supply and drainage pipeline anti-seepage device according to claim 3, characterized in that, The diameter of the pressing groove (51) at the end close to the mounting ring (3) is larger than the diameter at the end far from the mounting ring (3).
5. The anti-seepage device for water supply and drainage pipelines according to claim 1 or 4, characterized in that, The inflation structure (6) includes a plurality of inflation chambers (61) arranged in the mounting ring (3). The plurality of inflation chambers (61) are respectively communicated with different airbag rings (2) through air channels (62). A piston (63) is slidably arranged in the inflation chamber (61) in a sealed manner. A push column (64) is installed at one end of the piston (63) close to the locking ring (5), and a spring (65) is arranged between the piston (63) and the inner wall of the inflation chamber (61). The spring (65) makes the push column (64) abut against the side wall of the locking ring (5).
6. The anti-seepage device for water supply and drainage pipelines according to claim 1, characterized in that, The outer diameter of the connecting pipe (1) is adapted to the inner diameter of the docking pipe (7), and the end face of the connecting pipe (1) has an inclined chamfer (11).
7. The anti-seepage device for water supply and drainage pipelines according to claim 4, characterized in that, A flat mouth (52) for cooperating with a tool to apply force is arranged on the outer wall of the locking ring (5).