A temporary water-blocking device for pipeline maintenance

Abstract

This utility model belongs to the field of pipeline maintenance technology, and specifically relates to a temporary water-blocking device for pipeline maintenance. It includes a vent pipe, one end of which is connected to a sealing airbag for water blocking, and the other end of which is fixed to a first positioning plate. A sleeve is slidably connected inside the vent pipe, and a piston is fixedly connected to one end of the sleeve, with the piston slidably and sealingly located inside the vent pipe. An adjusting component is located at the end of the vent pipe away from the sealing airbag, used to control the sliding of the sleeve and piston. A fixing plate is fixedly sleeved on the outer side of the middle of the vent pipe, and its interior has multiple convex-shaped grooves in a ring shape, each groove containing a slidable supporting and positioning component. This utility model provides more stable installation, can withstand higher water pressure, and has a better water-blocking effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline maintenance, and particularly relates to a temporary water plugging device for pipeline maintenance. Background Art

[0002] The main purpose of pipeline maintenance is to maintain and restore the normal operation of pipelines and their equipment. When a pipeline is damaged, professional personnel are required to quickly repair the pipeline. At the same time, during the pipeline maintenance process, a water plugging device is also needed to temporarily block the pipeline.

[0003] In the Chinese utility model patent with the publication number of CN221097905U, a temporary water plugging device for water supply pipeline maintenance is disclosed. By the combined use of a plugging airbag and a tightening component, the water flow in the water supply pipeline can be blocked. When it is necessary to release the water supply in the water supply pipeline again, due to the simple structure of this device, the plugging part can be quickly disassembled, which is convenient and fast.

[0004] After retrieval, it is found that the above water plugging device only positions the push rod through a single bolt, which has the problem of poor stability, affects the stable inflation and expansion of the plugging airbag, thereby affecting the water plugging effect. Moreover, in the case of large water pressure, the above device is easily washed out of the pipeline by the water flow and is not firmly installed. Therefore, it is urgent to improve the existing temporary water plugging device and provide a temporary water plugging device for pipeline maintenance. Content of the Utility Model

[0005] The purpose of the utility model is to provide a temporary water plugging device for pipeline maintenance with reasonable design, simple structure, stable airbag expansion, firm device installation and better water plugging effect, so as to solve the problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A temporary water plugging device for pipeline maintenance, which comprises:

[0008] An air vent pipe, one end of the air vent pipe is adhesively connected with a plugging airbag for water plugging, the other end of the air vent pipe is fixed with a first positioning disc, a sleeve is slidably connected inside the air vent pipe, one end of the sleeve is fixedly connected with a piston, and the piston is hermetically slidably located inside the air vent pipe;

[0009] An adjusting component, which is located at the end of the air vent pipe far from the plugging airbag and is used to control the sliding of the sleeve and the piston;

[0010] A fixing disc, which is fixedly sleeved outside the middle part of the air vent pipe, and a plurality of chutes with a "convex" cross-section are annularly arranged inside the fixing disc, and a support and positioning component is slidably arranged in each chute;

[0011] A rotating ring is located in front of the fixed plate, and a bearing is sleeved on the outside of the vent pipe. Push rods are hinged between the rotating ring and multiple sets of the support and positioning components. Multiple locking bolts for positioning themselves are installed on the outer wall of the rotating ring in annular thread.

[0012] In a preferred embodiment, a crossbar is fixed inside the vent pipe, and a protrusion is provided on the outer wall of the end of the sleeve away from the piston, the protrusion being slidably sleeved on the outside of the crossbar.

[0013] In a preferred embodiment, the adjustment assembly includes a lead screw, a square rod, a handle, a spring, and a second positioning plate. The lead screw bearing is installed inside the vent pipe. The front end of the lead screw is fixedly connected to the square rod. The handle is fixedly installed at the end of the square rod away from the lead screw. The second positioning plate is engaged and slidably sleeved on the outside of the square rod. A spring is fixedly connected between the second positioning plate and the handle. The sleeve is threaded onto the outside of the lead screw.

[0014] In a preferred embodiment, both the second positioning disk and the first positioning disk have meshing tooth structures on their sides that are close to each other. The side of the meshing structures that are close to each other is an inclined straight line, and the side that is away from each other is a horizontal straight line.

[0015] In a preferred embodiment, the support positioning assembly includes a movable rod, a fixed column, a support block, and a rubber pad. The movable rod is engaged and slidably located in a groove opened inside the fixed plate. A fixed column is fixed on the outer wall of the end of the movable rod near the rotating ring. A support block is fixedly connected to the end of the movable rod away from the rotating ring. The support block is "L"-shaped, with a rubber pad adhered to the surface of its horizontal section and a through groove structure opened inside its vertical section.

[0016] In a preferred embodiment, the two ends of the push rod are hinged to a rotating ring and a fixed column, respectively, and the multiple movable rods are linked together through the rotating ring.

[0017] In a preferred embodiment, the system also includes positioning bolts, wherein a plurality of positioning bolts are arranged in a one-to-one correspondence with a plurality of sets of support positioning components, and one end of the positioning bolt passes through the through groove structure of the support block and is threadedly connected to the flange on the pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In the solution of this utility model:

[0020] When the control adjustment component rotates, the sleeve threaded to the outside of the screw can be controlled to drive the piston to move steadily backward along the vent pipe, thereby inflating the sealing airbag. During this process, the inclined surfaces of the meshing structures of the first and second positioning discs squeeze each other, which facilitates pushing the second positioning disc to move towards the handle to make room. After the sealing airbag is fully inflated, the second positioning disc can be reset by the spring and re-engage with the first positioning disc. The horizontal straight surfaces of the meshing structures of the two discs abut against each other, which can prevent the adjustment component from rotating automatically, thereby ensuring the stability of the position of the sleeve and piston, ensuring the stable expansion of the sealing airbag, and facilitating long-term and stable water blocking.

[0021] By controlling the rotating ring to rotate counterclockwise, multiple push rods can be used to push multiple sets of support positioning components to move stably along the slide groove in mutually distancing directions until the horizontal sections of multiple support blocks are in contact with the inner wall of the pipe. The rubber pads increase the friction between the support blocks and the pipe, facilitating the initial positioning of the device. Then, one end of the positioning bolt is passed through the through groove structure inside the vertical section of the support block and connected to the existing flange on the pipe, thereby completing the device fixation. Compared with the prior art, the installation of this device is more stable, can withstand higher water pressure, and has a better water blocking effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings are described as follows:

[0023] Figure 1 This is a schematic diagram of the three-dimensional left-side structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the overall left-side cross-sectional structure of the adjustment component of this utility model;

[0025] Figure 3 This is a front view schematic diagram of the overall structure of the support and positioning component of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of this utility model in its installation and use state.

[0027] In the picture:

[0028] 1. Ventilation tube; 2. Occlusion airbag; 3. First positioning plate; 4. Adjustment assembly; 41. Lead screw; 42. Square rod; 43. Handle; 44. Spring; 45. Second positioning plate; 5. Sleeve; 6. Piston; 7. Fixed plate; 8. Slide groove; 9. Support positioning assembly; 91. Movable rod; 92. Fixed column; 93. Support block; 94. Rubber pad; 10. Rotary ring; 11. Push rod; 12. Locking bolt; 13. Positioning bolt; 14. Crossbar. Detailed Implementation

[0029] The embodiments described below are merely some embodiments of the present invention and do not represent all embodiments consistent with the present invention. Exemplary embodiments will now be described with reference to the accompanying drawings:

[0030] like Figure 1-4 As shown, the temporary water-blocking device for pipeline maintenance of this utility model includes:

[0031] Vent pipe 1, one end of vent pipe 1 is connected to a sealing airbag 2 for water blocking, the other end of vent pipe 1 is fixed to a first positioning plate 3, a sleeve 5 is slidably connected inside vent pipe 1, one end of sleeve 5 is fixedly connected to a piston 6, and piston 6 is sealed and slidably located inside vent pipe 1.

[0032] Adjustment component 4 is located at the end of the vent tube 1 away from the blocking airbag 2 and is used to control the sliding of the sleeve 5 and the piston 6.

[0033] The fixing plate 7 is fixedly sleeved on the outer side of the middle part of the vent pipe 1. The interior of the fixing plate 7 has multiple sliding grooves 8 with a "convex" cross-section, and each sliding groove 8 has a support and positioning component 9 slidably installed in it.

[0034] The rotating ring 10 is located in front of the fixed plate 7 and the bearing is sleeved on the outside of the vent pipe 1. The rotating ring 10 and the multiple sets of support and positioning components 9 are all hinged with push rods 11. The outer wall of the rotating ring 10 is threaded with multiple locking bolts 12 for its own positioning.

[0035] Based on the above structure, a crossbar 14 is fixed inside the vent pipe 1, and a protrusion is provided on the outer wall of the end of the sleeve 5 away from the piston 6, and the protrusion is slidably sleeved on the outside of the crossbar 14.

[0036] In this embodiment, the crossbar 14 fixed inside the vent pipe 1 and the protrusion on the outer wall of the sleeve 5 can improve the stability of the sleeve 5 and the piston 6 sliding inside the vent pipe 1.

[0037] Based on the above structure, the adjustment component 4 includes a lead screw 41, a square rod 42, a handle 43, a spring 44, and a second positioning plate 45. The lead screw 41 is bearing installed inside the vent pipe 1. The front end of the lead screw 41 is fixedly connected to the square rod 42. The handle 43 is fixedly installed at the end of the square rod 42 away from the lead screw 41. The second positioning plate 45 is engaged and slidably sleeved on the outside of the square rod 42. The spring 44 is fixedly connected between the second positioning plate 45 and the handle 43. The sleeve 5 is threaded onto the outside of the lead screw 41.

[0038] In this embodiment, by controlling the rotation of the lead screw 41, it is easy to control the sleeve 5 and piston 6 to slide backward along the vent pipe 1, which facilitates the inflation of the sealing airbag 2.

[0039] Based on the above structure, both the second positioning disk 45 and the first positioning disk 3 have meshing tooth structures on their sides that are close to each other. The side of the meshing tooth structures that are close to each other is an inclined straight line, and the side that is away from each other is a horizontal straight line.

[0040] In this embodiment, the interlocking of the first positioning disc 3 and the second positioning disc 45 facilitates the control of the lead screw 41 to rotate only in one direction without human intervention. This ensures the stability of the position of the sleeve 5 and the piston 6, the stable expansion of the sealing airbag 2, and the long-term stable water blocking.

[0041] Based on the above structure, the support positioning component 9 includes a movable rod 91, a fixed column 92, a support block 93, and a rubber pad 94. The movable rod 91 is engaged and slidably located in the groove 8 opened inside the fixed plate 7. The fixed column 92 is fixed on the outer wall of the end of the movable rod 91 near the rotating ring 10, and the support block 93 is fixedly connected to the end of the movable rod 91 away from the rotating ring 10. The support block 93 is "L" shaped, and the surface of its horizontal section is bonded with a rubber pad 94, and its vertical section has a through groove structure.

[0042] Based on the above structure, the two ends of the push rod 11 are hinged to the rotating ring 10 and the fixed column 92 respectively, and multiple movable rods 91 are linked together through the rotating ring 10.

[0043] In this embodiment, by controlling the rotating ring 10 to rotate counterclockwise, it is convenient to use multiple push rods 11 to push multiple sets of support and positioning components 9 to move stably in a direction away from each other and to contact the inner wall of the pipe, which facilitates the initial positioning of the device.

[0044] Based on the above structure, it also includes positioning bolts 13. Multiple positioning bolts 13 are arranged in a one-to-one correspondence with multiple sets of support positioning components 9. One end of the positioning bolt 13 passes through the through groove structure of the support block 93 and is threadedly connected to the flange on the pipe.

[0045] In this embodiment, one end of the positioning bolt 13 is passed through the through groove structure inside the vertical section of the support block 93 and connected to the existing flange on the pipe, which enables the device to be installed stably, can withstand higher water pressure, and has a better water blocking effect.

[0046] The working principle of this utility model is as follows:

[0047] In use, first insert the sealing airbag 2 into the pipe to be sealed, then manually rotate the adjusting component 4 counterclockwise. At this time, the inclined surfaces of the meshing structure of the first positioning plate 3 and the second positioning plate 45 press against each other, which makes it easier to push the second positioning plate 45 to move towards the handle 43. By controlling the rotation of the screw 41, it is easy to control the sleeve 5 and the piston 6 to move backward synchronously along the cross bar 14, which facilitates the inflation of the sealing airbag 2. When the sealing airbag 2 is fully inflated, the second positioning plate 45 can be reset by the spring 44 and re-engage with the first positioning plate 3. The horizontal straight surfaces of the meshing structure of the first positioning plate 3 and the second positioning plate 45 abut against each other, which can prevent the adjusting component 4 from rotating automatically, thus ensuring the stability of the position of the sleeve 5 and the piston 6, and thus ensuring the stable expansion of the sealing airbag 2, which is conducive to long-term and stable water blocking.

[0048] After initial installation, the rotating ring 10 can be manually rotated, and multiple push rods 11 can be used to push multiple sets of support positioning components 9 to move stably along the slide groove 8 and move away from each other until the horizontal sections of multiple support blocks 93 are in contact with the inner wall of the pipe. Rubber pads 94 can increase the friction between the support blocks 93 and the pipe. Tightening the locking bolts 12 can position the rotating ring 10. Then, one end of the positioning bolt 13 is passed through the through groove structure inside the vertical section of the support block 93 and connected to the existing flange on the pipe, thereby completing the fixation of the device. Compared with the comparative document, the installation of this device is more stable, can withstand higher water pressure, avoids being washed out of the pipe by water flow, has a better water blocking effect, and is quick to install.

[0049] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any equivalent changes, modifications, substitutions, and variations made by those skilled in the art based on the concept of this utility model and on the basis of existing technology through logical analysis, reasoning, or limited experiments shall be within the scope of protection defined by the claims.

Claims

1. A temporary water shutoff device for pipe repair, characterized by, include: A venting tube (1) is connected to a sealing airbag (2) for blocking water at one end of the venting tube (1), and a first positioning plate (3) is fixed at the other end of the venting tube (1). A sleeve (5) is slidably connected inside the venting tube (1), and a piston (6) is fixedly connected to one end of the sleeve (5). The piston (6) is located inside the venting tube (1) in a sealed sliding position. Adjustment component (4), located at the end of the ventilator (1) away from the blocking airbag (2), is used to control the sliding of the sleeve (5) and the piston (6); The fixed plate (7) is fixedly sleeved on the outer side of the middle part of the vent pipe (1). The interior of the fixed plate (7) is provided with multiple sliding grooves (8) with a "convex" cross-section. Each sliding groove (8) is slidably provided with a support and positioning component (9). Rotary ring (10) is located in front of fixed plate (7) and the bearing is sleeved on the outside of vent pipe (1). Rotary ring (10) and multiple sets of support positioning components (9) are hinged with push rods (11). Multiple locking bolts (12) for positioning themselves are installed on the outer wall of the rotating ring (10) in annular thread.

2. The temporary water plugging device for pipeline repair according to claim 1, characterized in that: The vent pipe (1) is also fixed with a crossbar (14), and the outer wall of the sleeve (5) away from the piston (6) has a protrusion, which is slidably sleeved on the outside of the crossbar (14).

3. The temporary water plugging device for pipeline repair of claim 1, wherein: The adjustment assembly (4) includes a lead screw (41), a square rod (42), a handle (43), a spring (44), and a second positioning plate (45). The lead screw (41) is bearing installed inside the vent pipe (1). The front end of the lead screw (41) is fixedly connected to the square rod (42). The handle (43) is fixedly installed at the end of the square rod (42) away from the lead screw (41). The second positioning plate (45) is engaged and slidably sleeved on the outside of the square rod (42). A spring (44) is fixedly connected between the second positioning plate (45) and the handle (43). The sleeve (5) is threaded onto the outside of the lead screw (41).

4. The temporary water plugging device for pipeline repair of claim 3, wherein: The second positioning disk (45) and the first positioning disk (3) are provided with meshing tooth structures on the side that are close to each other. The side of the meshing structures that are close to each other is inclined straight, and the side that is away from each other is horizontal straight.

5. The temporary water plugging device for pipeline repair of claim 1, wherein: The support positioning component (9) includes a movable rod (91), a fixed column (92), a support block (93), and a rubber pad (94). The movable rod (91) is engaged and slidably located in the groove (8) opened inside the fixed plate (7). The fixed column (92) is fixed on the outer wall of the end of the movable rod (91) near the rotating ring (10). The support block (93) is fixedly connected to the end of the movable rod (91) away from the rotating ring (10). The support block (93) is "L" shaped, and the surface of its horizontal section is bonded with a rubber pad (94). Its vertical section has a through groove structure.

6. A temporary water plugging device for pipeline repair according to claim 5, characterized in that: The two ends of the push rod (11) are hinged to the rotating ring (10) and the fixed column (92) respectively, and the multiple movable rods (91) are linked together through the rotating ring (10).

7. A temporary water plugging device for pipeline repair according to claim 6, characterized in that: Further comprising positioning bolts (13), a plurality of said positioning bolts (13) are arranged in one-to-one correspondence with a plurality of groups of said support positioning assemblies (9), one end of the positioning bolt (13) passes through the through-slot structure of the support block (93) and is threadedly connected with the flange plate on the pipeline.

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