Air bag type pipeline plugging device

Abstract

The utility model provides an air bag type pipeline plugging device, and relates to the technical field of pipeline maintenance. The air bag type pipeline plugging device comprises an extension rod, the end face of the extension rod is fixedly connected with a limiting frame, the outer surface of the extension rod is fixedly connected with an extension motor, the output end of the extension motor is fixedly connected with an extension gear, the outer surface of the extension gear is meshed with a linkage sleeve rod, and the linkage sleeve rod is rotationally connected with the limiting frame. Adjusting gear shafts are meshed with the outer surfaces of the two ends of the linkage sleeve rod, and pushing rings are meshed with the outer surfaces of the adjusting gear shafts. According to the air bag type pipeline plugging device, the expansion positioning nail is arranged, the pushing ring rotates to push the expansion positioning nail to get close to and extrude the pipe wall, the device can be fixed to the inner side of a pipeline with flow, the extension rod is arranged, the device can stretch into the inner side of the pipeline for plugging, and the effect of stretching into the inner side of the pipeline for plugging the fixed position is achieved; the problem that the plugging position cannot be fixed and is prone to sliding due to flow impact during construction on the inner side of the pipeline under pressure is solved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline maintenance technology, specifically to an airbag-type pipeline sealing device. Background Technology

[0002] Underground connection tunnel project refers to the relocation and emergency repair of municipal stormwater and sewage pipe network. During construction, it is necessary to excavate part of the municipal pipes. Since the rainwater and sewage in the municipal pipes will continue to flow normally during the demolition and reconstruction period, it is necessary to block the municipal pipes in order to ensure the normal operation of the workers. Otherwise, rainwater and sewage will continue to flow into the foundation pit, making it impossible to carry out the underground tunnel construction.

[0003] A search revealed Chinese Patent Publication No. CN214789769U, which discloses an inflatable airbag pipe sealing device. The device includes a compressor and an airbag. The compressor's air supply pipe is connected to a flexible rubber hose via a three-way control valve, and a pressure gauge is installed on the flexible rubber hose. The other end of the flexible rubber hose is connected to an inflation pipe via a union connector, and the other end of the inflation pipe is connected to the airbag via a vent connector on the airbag. The compressor controls the air pressure inside the airbag to seal the pipe. In use, the compressor inflates the airbag to seal the pipe, improving the pipe sealing system, effectively controlling the pipe's seepage prevention requirements, and offering simple operation, high construction efficiency, and significant reduction in labor and construction costs. It is characterized by its ease of use.

[0004] Existing airbag sealing devices are prone to slippage during construction due to the pressure inside the pipeline. Furthermore, after sealing, liquid inside the pipeline can easily seep out along the gap between the airbag and the pipeline. Therefore, an airbag-type pipeline sealing device is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an airbag-type pipeline sealing device, which solves the problems mentioned in the background art.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an airbag-type pipe sealing device, comprising an extension rod, a limiting frame fixedly connected to the end face of the extension rod, an expansion motor fixedly connected to the outer surface of the extension rod, an expansion gear fixedly connected to the output end of the expansion motor, a linkage sleeve meshing with the outer surface of the expansion gear, the linkage sleeve being rotatably connected to the limiting frame, an adjusting gear shaft meshing with the outer surfaces of both ends of the linkage sleeve, a pushing ring meshing with the outer surface of the adjusting gear shaft, the pushing ring being rotatably connected to the limiting frame, an expansion airbag sleeved on the outer side of the linkage sleeve, a vent pipe fixedly connected to both ends of the expansion airbag, a concentrating ring fixedly connected to the outer side of the extension rod, the concentrating ring communicating with the outer pipe, a sealing airbag fixedly connected to the end of the limiting frame away from the extension rod, the sealing airbag communicating with the vent pipe, expansion positioning pins slidably connected to the inner sides of both ends of the limiting frame, the end of the expansion positioning pin near the center of the limiting frame being slidably connected to the pushing ring.

[0008] Preferably, the limiting frame has limiting guide discs at both ends, the outer layer of the limiting guide disc is a ring, the inner side of the ring is a cross-shaped plate, the vent pipe passes through the cross-shaped plate of the limiting guide disc, and the limiting guide discs at both ends are fixedly connected by a central connecting shaft.

[0009] Preferably, the linkage rod includes a sleeve and an end gear. The sleeve is round and is sleeved on the outside of the central connecting shaft. There are two sets of end gears, which are fixedly connected to both ends of the sleeve. The outer surface of the end gear meshes with the adjusting gear shaft.

[0010] Preferably, the push ring is circular in shape, and an array of arc-shaped grooves are provided on the surface of the push ring. The expansion positioning pin slides inside the arc-shaped grooves of the push ring, and the inner circumferential surface of the push ring is provided with teeth that mesh with the adjusting gear shaft.

[0011] Preferably, the sealing airbag is a conical airbag, and a sealing ring is provided on the outer side of the conical surface of the sealing airbag.

[0012] Preferably, the expansion positioning pin is L-shaped, and one end of the expansion positioning pin near the center of the limiting guide plate is slidably connected to the push ring. Beneficial effects

[0013] This utility model provides an airbag-type pipe sealing device. It has the following beneficial effects:

[0014] This airbag-type pipe sealing device uses an expansion positioning pin, which is pushed close to and squeezed against the pipe wall by a rotating push ring. This allows the device to be fixed inside the pipe with flow. By using an extension rod, the device can extend into the pipe to seal, achieving the effect of sealing in a fixed position inside the pipe. This solves the problem that the sealing position cannot be fixed and is easily slipped due to flow impact when the pipe is under pressure.

[0015] This airbag-type pipe sealing device uses an expansion airbag inside the limiting frame to expand and block the pipe. By using the sealing airbag, liquid is prevented from flowing out along the gap between the pipe and the device, thus achieving the effect of sealing the pipe and preventing liquid leakage. This solves the problem that liquid inside the pipe can easily seep out along the gap between the airbag and the pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the driving ring structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the end gear structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting frame structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the sealing airbag structure of this utility model.

[0021] The components include: 1. Extension rod; 2. Limiting frame; 21. Limiting guide plate; 22. Central connecting shaft; 3. Extension motor; 4. Extension gear; 5. Linkage sleeve rod; 51. Sleeve tube; 52. End gear; 6. Adjusting gear shaft; 7. Push ring; 8. Expansion airbag; 9. Ventilation tube; 10. Central ring; 11. External tube; 12. Sealing airbag; and 13. Expansion positioning pin. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides an airbag-type pipe sealing device, such as... Figure 1-5As shown, the device includes an extension rod 1, with a limit frame 2 fixedly connected to the end face of the extension rod 1. An extension motor 3 is fixedly connected to the outer surface of the extension rod 1, and an extension gear 4 is fixedly connected to the output end of the extension motor 3. A linkage sleeve 5 meshes with the outer surface of the extension gear 4. The linkage sleeve 5 is rotatably connected to the limit frame 2. Adjustment gear shafts 6 mesh with the outer surfaces of both ends of the linkage sleeve 5. The linkage sleeve 5 includes a sleeve tube 51 and an end gear 52. The sleeve tube 51 is in the shape of a round tube and is sleeved on the outside of the central connecting shaft 22. There are two sets of end gears 52, which are fixedly connected to both ends of the sleeve tube 51. The outer surface of the end gears 52 meshes with the adjustment gear shafts 6. The linkage sleeve 5 can simultaneously drive the adjustment gear shafts 6 at both ends to rotate by rotating, so that the mechanisms at both ends of the device can be stably and simultaneously pushed.

[0024] The outer surface of the adjusting gear shaft 6 is engaged with a push ring 7, which is rotatably connected to the limiting frame 2. An expansion airbag 8 is sleeved on the outside of the linkage rod 5. Both ends of the expansion airbag 8 are fixedly connected and have a vent pipe 9 passing through them. The two ends of the limiting frame 2 are limiting guide discs 21. The outer layer of the limiting guide disc 21 is a ring, and the inner side of the ring is a cross-shaped plate. The vent pipe 9 passes through the cross-shaped plate of the limiting guide disc 21. The two limiting guide discs 21 at both ends are fixedly connected by a central connecting shaft 22. The limiting frame 2 can play a supporting role, making the device easier to control and better pushed inside the pipeline.

[0025] A concentrating ring 10 is fixedly connected to the outside of the extension rod 1. The concentrating ring 10 is connected to the outer pipe 11. A sealing airbag 12 is fixedly connected to the end of the limiting frame 2 away from the extension rod 1. The sealing airbag 12 is a conical airbag. A sealing ring is provided on the outer side of the conical surface of the sealing airbag 12. The sealing airbag 12 can fit against the inner wall of the pipe by using the sealing ring on its surface, so that the inner wall of the pipe and the sealing airbag 12 fit more closely to prevent liquid leakage.

[0026] The sealing airbag 12 is connected to the ventilation tube 9. The inner sides of both ends of the limiting frame 2 are slidably connected to the expansion positioning pins 13. The end of the expansion positioning pin 13 near the center of the limiting frame 2 is slidably connected to the push ring 7. The push ring 7 is circular in shape and has an array of arc-shaped grooves on its surface. The expansion positioning pin 13 slides inside the arc-shaped grooves of the push ring 7. The inner circumferential surface of the push ring 7 is provided with teeth that mesh with the adjusting gear shaft 6. The push ring 7 can push the expansion positioning pin 13 out by rotating, preventing the expansion positioning pin 13 from not being able to extend at the same time, which would cause the device to tilt and make it impossible to seal the pipe.

[0027] The expansion positioning pin 13 is L-shaped. One end of the expansion positioning pin 13 near the center of the limiting guide plate 21 is slidably connected to the push ring 7. The expansion positioning pin 13 can extend to and squeeze the inner wall of the pipe, so that the device can fix the position of the pipe relatively and prevent the flow of liquid inside the pipe from impacting the device and changing the position of the sealing device.

[0028] Working principle: In use, first use the extension rod 1 to send the device into the pipe. Start the extension motor 3 to drive the extension gear 4 to rotate, so that the extension gear 4 pushes the linkage rod 5 to rotate on the surface of the central shaft 22. At the same time, the end gears 52 at both ends of the linkage rod 5 push the adjusting gear shaft 6 to rotate, so that the adjusting gear shaft 6 drives the pushing ring 7 to rotate. During the rotation, the pushing ring 7 uses the inner arc groove to push the expansion positioning pin 13 to move towards the pipe wall. By the expansion positioning pin 13 approaching and pressing the pipe wall, the device is fixed inside the pipe, so that the material flowing in the pipe will not impact and cause the device to slide. By connecting the outer pipe 11 to the external air pump, the airflow can quickly enter the inner side of the concentrating ring 10, so that the airflow can enter the inner side of the expansion airbag 8 evenly, so that the expansion airbag 8 fills and blocks the pipe. At the same time, through the connection of the vent pipe 9, the sealing airbag 12 is filled, so that the outer wall of the sealing airbag 12 fits the pipe wall, preventing liquid from flowing through the gaps in the device.

[0029] 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. An airbag-type pipe plugging device comprising an elongated rod (1), characterized in that: The prolonging rod (1) is fixedly connected with a limiting frame (2) at the end face, an expansion motor (3) is fixedly connected with the outer surface of the prolonging rod (1), an expansion gear (4) is fixedly connected with the output end of the expansion motor (3), the outer surface of the expansion gear (4) is engaged with a linkage sleeve rod (5), the linkage sleeve rod (5) is rotatably connected with the limiting frame (2), the outer surfaces of the two ends of the linkage sleeve rod (5) are engaged with adjusting tooth shafts (6), the outer surface of the adjusting tooth shaft (6) is engaged with a pushing ring (7), the pushing ring (7) is rotatably connected with the limiting frame (2), an expansion air bag (8) is sleeved on the outer side of the linkage sleeve rod (5), air pipes (9) are fixedly connected with the two ends of the expansion air bag (8) and penetrate through the expansion air bag (8), a concentration ring (10) is fixedly connected with the outer side of the prolonging rod (1), the concentration ring (10) is communicated with an external pipe (11), a blocking air bag (12) is fixedly connected with the end of the limiting frame (2) away from the prolonging rod (1), the blocking air bag (12) is communicated with the air pipe (9), expansion positioning nails (13) are slidably connected with the inner sides of the two ends of the limiting frame (2), and the end of the expansion positioning nail (13) close to the center of the limiting frame (2) is slidably connected with the pushing ring (7).

2. An airbag-type pipe plugging device according to claim 1, characterized in that: The two ends of the limiting frame (2) are limiting guide discs (21), the outer layer of the limiting guide disc (21) is a circular ring, the inner side of the circular ring is a cross-shaped plate, the air pipe (9) penetrates through the cross-shaped plate of the limiting guide disc (21), and the two limiting guide discs (21) are fixedly connected through a middle connecting shaft (22).

3. An airbag-type pipe plugging apparatus according to claim 2, wherein: The linkage sleeve rod (5) comprises a sleeving pipe (51) and end head gears (52), the sleeving pipe (51) is in the shape of a circular pipe, the sleeving pipe (51) is sleeved on the outer side of the middle connecting shaft (22), and the two groups of end head gears (52) are fixedly connected with the two ends of the sleeving pipe (51).

4. An airbag-type pipe plugging apparatus according to claim 1, characterized by: The pushing ring (7) is in the shape of a circular ring, the surface of the pushing ring (7) is arrayed with arc-shaped sliding grooves, the expansion positioning nails (13) slide in the inner side of the arc-shaped sliding grooves of the pushing ring (7), and the inner circumferential surface of the pushing ring (7) is provided with teeth and engaged with the adjusting tooth shaft (6).

5. An airbag-type pipe plugging apparatus according to claim 1, wherein: The blocking air bag (12) is in the shape of a conical air bag, and a sealing ring is arranged on the outer side of the conical surface of the blocking air bag (12).

6. An airbag-type pipe plugging apparatus according to claim 2, wherein: The expansion positioning nail (13) is in the shape of "L", and the end of the expansion positioning nail (13) close to the center of the limiting guide disc (21) is slidably connected with the pushing ring (7).

Images