A pipe plugging device for a municipal water network

Abstract

The application relates to a pipeline plugging device of a municipal water network, belonging to the technical field of water networks, which comprises a pipeline body, the inside of the pipeline body is provided with a transmission cylinder, a plurality of fixing grooves are arranged on the outer periphery of the transmission cylinder, and the fixing grooves are equidistantly arranged. The application has the beneficial effect that when the transmission assembly drives the plurality of bidirectional lead screws to rotate, the two sides of the sliding members are synchronously driven to move in opposite directions, the connecting rod pushes the clamping strips to expand towards the inner wall of the pipeline body and tightly abut, rigid clamping is formed by using mechanical force, the problem that a traditional single plugging air bag is fixed by relying on friction and is easily displaced by water flow is solved, and even in a high water pressure environment, the stable plugging state can still be maintained, and when the clamping strips expand, the reinforcing pieces displace along the sliding grooves and the sliding frames to form a triangular support structure, the reaction force of the inner wall of the pipeline body on the clamping strips is effectively dispersed, and the connecting rod is prevented from being deformed due to excessive stress.

Description

Technical Field

[0001] This application relates to the field of water supply network technology, and in particular to a pipe sealing device for municipal water supply networks. Background Technology

[0002] In municipal engineering projects, pipe bursts and leaks sometimes occur. In such cases, it is necessary to seal the affected pipes to prevent the internal water flow from affecting the repair work. Therefore, special sealing devices are required for sealing pipe networks.

[0003] Currently, the widely used pipeline sealing methods in the industry mostly rely on airbag structures placed inside the pipeline. By inflating the airbags, they expand and tightly adhere to the inner wall of the pipeline, thereby achieving the sealing purpose. However, the gripping force design of existing airbag sealing devices is relatively weak, relying only on the frictional force after the airbags expand to achieve fixation. When the water pressure inside the pipeline is high, the airbags are easily displaced by the water flow or even blown out as a whole. This not only fails to guarantee the sealing effect but may also pose safety hazards to surrounding facilities or construction personnel, seriously affecting the efficiency and safety of repair operations. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main objective of this application is to provide a pipe sealing device for municipal water supply networks.

[0005] The technical solution of this application is as follows: a pipe sealing device for a municipal water supply network includes a pipe body, a transmission cylinder is provided inside the pipe body, a plurality of fixed grooves are formed on the outer periphery of the transmission cylinder, the plurality of fixed grooves are arranged at equal intervals, a sealing airbag is installed on the side of the transmission cylinder near the pipe body, a bidirectional screw is rotatably connected inside each of the fixed grooves, a sliding member is threaded to both ends of the outer side of the bidirectional screw, the sliding member is slidably connected to the inner wall of the fixed groove, a connecting rod is rotatably connected to the outer side of each sliding member, a plurality of clamping strips are provided on the outer periphery of the transmission cylinder, the end of each connecting rod away from the sliding member is rotatably connected to the inner wall of the clamping strip, a sliding groove is formed inside the connecting rod, a reinforcing member is slidably connected inside the sliding groove, a sliding frame is fixedly connected to both ends of one side of each clamping strip, and the end of each reinforcing member away from the connecting rod is slidably connected to the corresponding sliding frame.

[0006] By adopting the above technical solution, when the transmission component drives multiple bidirectional lead screws to rotate, it will synchronously drive the sliding parts on both sides to move in opposite directions, causing the connecting rod to push the clamping bar to expand into the inner wall of the pipe body and tightly abut against it. The mechanical force is used to form a rigid clamp, which solves the problem that the traditional single sealing airbag relies on friction to fix and is easily displaced by water flow impact.

[0007] In a preferred embodiment, a transmission box is fixedly installed on the outside of the transmission cylinder, and a transmission assembly is provided inside the transmission box. The transmission assembly includes a driving gear rotatably connected to one side of the transmission cylinder, and the end of the bidirectional lead screw away from the pipe body extends into the interior of the transmission box and is fixedly connected to a driven gear. The driven gears are all meshed with the driving gear.

[0008] By adopting the above technical solution, the synchronous expansion or contraction of all clamping bars can be achieved through the setting of the handle, simplifying the operation process.

[0009] In a preferred embodiment, a handle is rotatably connected inside the transmission box, and one end of the handle is fixedly connected to the rotating shaft of the drive gear.

[0010] By adopting the above technical solution, the transmission components in the transmission box can achieve synchronous drive of multiple sets of bidirectional lead screws.

[0011] In a preferred embodiment, a delivery air pipe is fixedly connected inside the transmission box, and one end of the delivery air pipe passes through the transmission cylinder and extends into the interior of the sealing airbag.

[0012] By adopting the above technical solution, the airbag can be inflated and inhaled.

[0013] In a preferred embodiment, the outer wall of the clamping strip has an arc-shaped structure, and the outer wall of the clamping strip abuts against the inner wall of the pipe body.

[0014] By adopting the above technical solution, the device can be made more stable during the sealing process.

[0015] In a preferred embodiment, a connecting flange is provided at the end of the air delivery pipe away from the transmission box, and an inlet / outlet air pipe is provided on the outside of the transmission box. The inlet / outlet air pipe is connected to the air delivery pipe through the connecting flange.

[0016] By adopting the above technical solution, the inflation and deflation operations of the airbag and the replacement of components can be blocked.

[0017] In a preferred embodiment, two handles are fixedly connected to the side of the transmission box away from the transmission cylinder, the sealing airbag is in contact with the inner wall of the pipe body, and a wear-resistant layer is provided on the outer side of the sealing airbag.

[0018] By adopting the above technical solution and setting a wear-resistant layer, the wear of impurities on the inner wall of the pipeline body on the sealing airbag can be reduced.

[0019] Compared with the prior art, the advantages and positive effects of this application are as follows: 1. In this application, when the transmission assembly drives multiple bidirectional lead screws to rotate, it synchronously drives the sliding parts on both sides to move in opposite directions, causing the connecting rod to push the clamping bar to expand and tightly abut against the inner wall of the pipe body. The mechanical force forms a rigid clamp, which solves the problem that traditional single sealing airbags rely on friction for fixation and are easily displaced by water flow impact. Even under high water pressure, it can maintain a stable sealing state. When the clamping bar expands, the reinforcing part will move along the slide groove and sliding frame to form a triangular support structure, which effectively disperses the reaction force of the inner wall of the pipe body on the clamping bar and avoids deformation of the connecting rod due to excessive force.

[0020] 2. In this application, the clamping bar is adjustable, which can be applied to most pipe bodies for sealing operations, thereby improving the applicability of the device. Attached Figure Description

[0021] Figure 1 This application provides an overall perspective view of a pipe sealing device for a municipal water supply network; Figure 2 This application provides a schematic diagram of the transmission component of a pipe plugging device for a municipal water supply network; Figure 3 A partial schematic diagram of a pipe sealing device for a municipal water supply network is provided in this application; Figure 4 This application provides a schematic diagram of the conveying air pipe, transmission cylinder, and sealing airbag structure of a pipeline sealing device for a municipal water supply network.

[0022] Legend: 1. Pipe body; 2. Sealing airbag; 3. Transmission cylinder; 4. Two-way lead screw; 5. Transmission box; 6. Air delivery pipe; 7. Fixing groove; 8. Clamping bar; 9. Handle; 10. Driving gear; 11. Driven gear; 12. Connecting flange; 13. Inlet and outlet air pipes; 14. Sliding component; 15. Connecting rod; 16. Slide groove; 17. Reinforcing component; 18. Sliding frame. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] Reference Figure 1-4A pipe sealing device for a municipal water supply network includes a pipe body 1. A transmission cylinder 3 is installed inside the pipe body 1. Several fixed grooves 7 are formed on the outer periphery of the transmission cylinder 3, arranged at equal intervals. A sealing airbag 2 is installed on the side of the transmission cylinder 3 closest to the pipe body 1. A bidirectional screw 4 is rotatably connected inside each of the fixed grooves 7. Sliding elements 14 are threaded to both ends of the outer side of the bidirectional screw 4, and each sliding element 14 is slidably connected to the inner wall of the fixed groove 7. A connecting rod 15 is rotatably connected to the outer side of each sliding element 14. Multiple clamping bars 8 are provided on the outer periphery of the transmission cylinder 3. The end of each connecting rod 15 away from the sliding element 14 is rotatably connected to the inner wall of the clamping bar 8. A sliding groove 16 is formed inside the connecting rod 15, and a reinforcing member 17 is slidably connected inside the sliding groove 16. Sliding frames 18 are fixedly connected to both ends of one side of each clamping bar 8. The reinforcing member 17 is rotatably connected to the inner wall of each clamping bar 8. One end of each rod 15 is slidably connected to the corresponding sliding frame 18. When the transmission component drives multiple bidirectional lead screws 4 to rotate, it synchronously drives the sliding parts 14 on both sides to move in opposite directions, causing the connecting rod 15 to push the clamping bar 8 to expand and tightly contact the inner wall of the pipe body 1. The mechanical force forms a rigid clamp, which solves the problem that the traditional single sealing airbag 2 relies on friction to fix and is easily displaced by water flow impact. Even under high water pressure, it can still maintain a stable sealing state. When the clamping bar 8 expands, the reinforcing part 17 will move along the sliding groove 16 and the sliding frame 18 to form a triangular support structure, which effectively disperses the reaction force of the inner wall of the pipe body 1 on the clamping bar 8, and avoids the connecting rod 15 from deforming due to excessive force. Moreover, the clamping bar 8 is adjustable and can be used for sealing operations on most pipe bodies 1, thereby improving the applicability of the device.

[0025] Specifically, a transmission box 5 is fixedly installed on the outside of the transmission cylinder 3. A transmission assembly is installed inside the transmission box 5. The transmission assembly includes a drive gear 10 rotatably connected to one side of the transmission cylinder 3. The ends of the bidirectional lead screws 4 away from the pipe body 1 extend into the interior of the transmission box 5. The transmission assembly inside the transmission box 5 can realize the synchronous drive of multiple sets of bidirectional lead screws 4, so that the synchronous expansion or contraction of all clamping bars 8 can be completed by a single handle 9, simplifying the operation process. A driven gear 11 is fixedly connected, and the driven gears 11 are all meshed with the drive gear 10. A handle 9 is rotatably connected inside the transmission box 5. One end of the handle 9 is fixedly connected to the rotating shaft of the drive gear 10. A delivery air pipe 6 is fixedly connected inside the transmission box 5. One end of the delivery air pipe 6 passes through the transmission cylinder 3 and extends into the interior of the sealing airbag 2.

[0026] Specifically, the outer wall of the clamping strip 8 has an arc-shaped structure, and the outer wall of the clamping strip 8 abuts against the inner wall of the pipe body 1, which makes the device more stable during the sealing process. The end of the air delivery pipe 6 away from the transmission box 5 is provided with a connecting flange 12. The outer side of the transmission box 5 is provided with an inlet and outlet air pipe 13 to facilitate the inflation and deflation of the sealing airbag 2 and the replacement of parts. The inlet and outlet air pipe 13 is connected to the air delivery pipe 6 through the connecting flange 12. Two handles are fixedly connected to the side of the transmission box 5 away from the transmission cylinder 3. The handles facilitate the placement and positioning of the device in the pipe body 1, reduce the operation risk of construction personnel, and ensure the safe and efficient repair operation. The sealing airbag 2 fits against the inner wall of the pipe body 1, and the outer side of the sealing airbag 2 is provided with a wear-resistant layer, which can reduce the wear of impurities on the inner wall of the pipe body 1 on the sealing airbag 2 and extend its service life.

[0027] Working principle: First, the operator can place the sealing device in the pipe body 1 using the handle. Then, by turning the handle 9, multiple sets of bidirectional screws 4 can be driven synchronously. This allows all clamping bars 8 to expand or contract synchronously with a single handle 9. This synchronously drives the sliding parts 14 at both ends of the bidirectional screws 4 to move in opposite directions, causing the connecting rod 15 to push the clamping bars 8 to expand and tightly contact the inner wall of the pipe body 1. The mechanical force forms a rigid clamp, which solves the problem of traditional single sealing airbags 2 relying on friction for fixation and being easily displaced by water flow impact. Even under high water pressure, it can maintain a stable sealing state. When the clamping bars 8 expand, the reinforcing part 17 will move along the sliding groove 16 and the sliding frame 18 to form a triangular support structure, which effectively disperses the reaction force of the inner wall of the pipe body 1 on the clamping bars 8 and prevents the connecting rod 15 from deforming due to excessive force. Then, the air delivery pipe 6 can be connected to the inlet and outlet pipes 13 using the connecting flange 12. The expansion degree of the sealing airbag 2 can be adjusted according to the actual size of the pipe body 1.

[0028] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0029] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pipe sealing device for a municipal water supply network, comprising a pipe body (1), characterized in that: The pipeline body (1) is equipped with a transmission cylinder (3) inside. Several fixed grooves (7) are formed on the outer periphery of the transmission cylinder (3). These fixed grooves (7) are arranged at equal intervals. A sealing airbag (2) is installed on the side of the transmission cylinder (3) closest to the pipeline body (1). A double-acting screw (4) is rotatably connected inside each fixed groove (7). Sliding elements (14) are threaded to both ends of the outer side of each double-acting screw (4). The sliding elements (14) are slidably connected to the inner wall of each fixed groove (7). The outer side is rotatably connected to a connecting rod (15). Multiple clamping strips (8) are provided on the outer periphery of the transmission cylinder (3). The end of the connecting rod (15) away from the sliding member (14) is rotatably connected to the inner wall of the clamping strip (8). A sliding groove (16) is opened inside the connecting rod (15). A reinforcing member (17) is slidably connected inside the sliding groove (16). Both ends of one side of the clamping strip (8) are fixedly connected to a sliding frame (18). The end of the reinforcing member (17) away from the connecting rod (15) is slidably connected to the corresponding sliding frame (18).

2. The pipe sealing device for a municipal water supply network according to claim 1, characterized in that: A transmission box (5) is fixedly installed on the outside of the transmission cylinder (3). A transmission assembly is provided inside the transmission box (5). The transmission assembly includes a drive gear (10) rotatably connected to one side of the transmission cylinder (3). The end of the bidirectional screw (4) away from the pipe body (1) extends into the inside of the transmission box (5) and is fixedly connected to a driven gear (11). The driven gear (11) meshes with the drive gear (10).

3. A pipe sealing device for a municipal water supply network according to claim 2, characterized in that: The transmission box (5) is rotatably connected to a handle (9), one end of which is fixedly connected to the rotating shaft of the drive gear (10).

4. A pipe sealing device for a municipal water supply network according to claim 2, characterized in that: The transmission box (5) is fixedly connected to a delivery air pipe (6), one end of which passes through the transmission cylinder (3) and extends into the interior of the sealing airbag (2).

5. A pipe sealing device for a municipal water supply network according to claim 1, characterized in that: The outer wall of the clamping bar (8) has an arc-shaped structure, and the outer wall of the clamping bar (8) abuts against the inner wall of the pipe body (1).

6. A pipe sealing device for a municipal water supply network according to claim 4, characterized in that: The end of the air delivery pipe (6) away from the transmission box (5) is provided with a connecting flange (12), and the outside of the transmission box (5) is provided with an inlet and outlet air pipe (13). The inlet and outlet air pipe (13) is connected to the air delivery pipe (6) through the connecting flange (12).

7. A pipe sealing device for a municipal water supply network according to claim 2, characterized in that: Two handles are fixedly connected to the side of the transmission box (5) away from the transmission cylinder (3). The sealing airbag (2) is in contact with the inner wall of the pipe body (1). A wear-resistant layer is provided on the outer side of the sealing airbag (2).

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