Pre-treatment auxiliary device for non-excavation defect repair of pipeline

Abstract

The utility model relates to the technical field of pipeline non-excavation pretreatment, and discloses a pretreatment auxiliary device for pipeline non-excavation defect repair, which comprises an end cover, a plugging device is arranged on the end cover, the plugging device comprises a mounting part, and a plugging part is arranged on the end cover. According to the pretreatment auxiliary device for non-excavation defect repair of the pipeline, by arranging a first sealing ring, a second sealing ring, an adjusting plate, a mounting sleeve, a sliding block, a spring, an adjusting ring, a clamping block, a limiting sliding block, an extrusion block and a connecting rod, the outer surface of the first sealing ring is attached to the inner wall of the pipeline, and the inner wall of the second sealing ring is attached to the outer surface of the pipeline; the adjusting plate pushes the extrusion block to move through the connecting rod, the outer surface of the extrusion block extrudes the inner wall of the pipeline, the plugging device is stably installed at the end of the pipeline, the clamping block clamps the adjusting ring through the elastic force of the spring, the installation sleeve is positioned, and the installation stability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of trenchless pipeline pretreatment technology, specifically to a pretreatment auxiliary device for trenchless pipeline defect repair. Background Technology

[0002] Pre-treatment auxiliary devices for trenchless pipeline repair are key equipment to ensure repair quality and efficiency. They seal one end and then pressurize the other end to determine if the pipeline is leaking.

[0003] Chinese patent disclosure for a pipe sealing device, publication number CN219549922U, includes an elastic sealing ring and a hollow shielding cap. The shielding cap has a conical structure with an opening at its bottom, and one end of the elastic sealing ring is connected to the opening. An elastic buffer ring is also provided on the inner wall of the elastic sealing ring. According to the embodiments of this utility model, the pipe sealing device utilizes the elasticity of the elastic sealing ring to adapt to pipes of different sizes, thereby improving the applicability of the sealing device and reducing costs. Furthermore, the elastic buffer ring provided on the inner wall of the elastic sealing ring provides protection for the pipe.

[0004] However, it still has the following drawbacks: the device uses the squeezing force between the elastic sealing ring and the inner wall of the pipe for installation, but relying solely on this squeezing force cannot maintain relative stability between the device and the pipe, making the device prone to detachment. Therefore, we propose a pretreatment auxiliary device for trenchless pipeline defect repair to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a pretreatment auxiliary device for trenchless pipeline repair defects, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pretreatment auxiliary device for trenchless pipeline repair defects, comprising an end cap, wherein a sealing device is provided on the end cap, and the sealing device comprises an installation part;

[0007] The mounting part includes a mounting sleeve and a slider. The outer surface of the mounting sleeve is provided with an annular groove, the outer surface of the end cap is provided with a through hole, the inner wall of the end cap extends into the annular groove and is rotatably connected to the inner wall of the annular groove through a bearing, the outer surface of the mounting sleeve is provided with a sliding groove, and the outer surface of the slider is slidably connected to the inner wall of the mounting sleeve.

[0008] The end cap is provided with a sealing part;

[0009] The sealing part includes an air guide tube, two fixed plates and two movable plates. The outer surface of the air guide tube is slidably connected to the inner wall of the mounting sleeve, and the two movable plates are disposed between the two fixed plates.

[0010] A further improvement is that the mounting part also includes a first sealing ring, a second sealing ring, an adjusting plate, a spring, a locking block, a limiting slider, a pressing block, a connecting rod, and an adjusting ring. The adjusting plate is threaded onto the outer surface of the mounting sleeve, the first sealing ring is fixedly fitted onto the outer surface of the adjusting plate, and the outer surface of the second sealing ring is fixedly connected to the inner wall of the end cap. By setting the first sealing ring and the second sealing ring, it is convenient to install and position the end cap.

[0011] A further improvement is that the left end of the connecting rod is hinged to the right end of the adjusting plate, and the right end of the connecting rod is hinged to the left end face of the extrusion block. An elastic gasket is fixedly connected to the outer surface of the extrusion block. By setting the connecting rod, the mounting sleeve, the adjusting plate, and the extrusion block, rotating the mounting sleeve controls the adjusting plate to move to the right, so that the elastic gasket on the extrusion block extrudes the inner wall of the pipe, and the end cap is stably installed at the end of the pipe.

[0012] A further improvement is that a T-shaped groove is provided on the inner wall of the end cap, the outer surface of the limiting slider is slidably connected to the inner wall of the T-shaped groove, and the left end face of the limiting slider is fixedly connected to the right end face of the extrusion block. The limiting slider is set after passing through to facilitate the positioning of the extrusion block.

[0013] A further improvement is that the inner wall of the adjusting ring is fixedly connected to the outer surface of the slider, the right end of the spring is fixedly connected to the inner wall of the mounting sleeve, the left end of the spring is fixedly connected to the right end face of the slider, the left end face of the locking block is fixedly connected to the right end face of the end cap, the outer surface of the adjusting ring is provided with a locking hole, and the outer surface of the locking block extends into the interior of the adjusting ring and engages with the inner wall of the adjusting ring. By setting the locking block, adjusting ring, slider and spring, it is convenient to position the mounting sleeve.

[0014] A further improvement is that the sealing part also includes a third sealing ring, a fixing rod, and an airbag. The fixing plate is fixedly sleeved on the outer surface of the air guide tube, and the moving plate is slidably sleeved on the outer surface of the air guide tube. The left end face of the fixing rod is fixedly connected to the right end face of the right fixing plate. The outer surface of the fixing rod slides through the left end face of the adjusting plate and extends to the right side of the adjusting plate. The right end face of the fixing rod is connected to the inner wall of the end cap. The outer surfaces of the fixing plate and the moving plate are both fixedly connected to the outer surface of the third sealing ring on the adjacent side. By setting the third sealing ring, it is convenient to seal the end of the pipe.

[0015] A further improvement is that the outer surface of the airbag is fixedly connected to the outer surface of the air guide tube, and the inside of the airbag is connected to the inside of the air guide tube. A valve is provided on the air guide tube. By setting up the air guide tube and the airbag, high-pressure gas is introduced into the air guide tube. The airbag expands and seals the inside of the pipe. At the same time, the airbag pushes the moving plate to move, so that the third sealing ring is squeezed and deformed, thereby improving the sealing effect on the end of the pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This pretreatment auxiliary device for trenchless pipeline defect repair consists of a first sealing ring, a second sealing ring, an adjusting plate, an installation sleeve, a slider, a spring, an adjusting ring, a locking block, a limiting slider, a squeezing block, and a connecting rod. The outer surface of the first sealing ring is attached to the inner wall of the pipeline, and the inner wall of the second sealing ring is attached to the outer surface of the pipeline. Rotating the installation sleeve causes the adjusting plate to push the squeezing block to move through the connecting rod, so that the outer surface of the squeezing block squeezes the inner wall of the pipeline, allowing the sealing device to be stably installed at the end of the pipeline. The spring force is used to lock the adjusting ring and position the installation sleeve, improving the stability of the device installation.

[0018] 2. By setting up a gas guide pipe, a fixed plate, a movable plate, a third sealing ring, and a fixed rod, the end of the pipe is sealed by the squeezing force between the third sealing ring and the inner wall of the pipe;

[0019] 3. By setting valves and airbags, high-pressure air is introduced into the air pipe, causing the airbag to expand. The outer surface of the airbag is pressed against the inner wall of the pipe, sealing the end of the pipe. At the same time, the airbag pushes the moving plate to move, and the moving plate presses the third sealing ring, causing the third sealing ring to deform, thus improving the sealing effect on the end of the pipe. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the sealing device of this utility model;

[0021] Figure 2 This is a front sectional view of the three-dimensional structure of the sealing device of this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged view of the structure at point B in the middle;

[0024] Figure 5 This is a three-dimensional structural diagram of the mounting sleeve of this utility model;

[0025] Figure 6 This is a left-side sectional view of the three-dimensional structure of the sealing device of this utility model.

[0026] In the diagram: 1 End cap, 2 Sealing device, 21 Mounting part, 22 Sealing part, 211 First sealing ring, 212 Second sealing ring, 213 Adjusting plate, 214 Mounting sleeve, 215 Slider, 216 Spring, 217 Adjusting ring, 218 Locking block, 219 Limiting slider, 210 Pressing block, 201 Connecting rod, 221 Valve, 222 Air guide pipe, 223 Fixing plate, 224 Moving plate, 225 Third sealing ring, 226 Fixing rod, 227 Airbag. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-6 This utility model provides a technical solution: a pretreatment auxiliary device for trenchless pipeline repair of defects, including an end cap 1, a sealing device 2 provided on the end cap 1, and the sealing device 2 including an installation part 21;

[0029] The mounting part 21 includes a mounting sleeve 214 and a slider 215. The outer surface of the mounting sleeve 214 is provided with an annular groove, and the outer surface of the end cap 1 is provided with a through hole. The inner wall of the end cap 1 extends into the annular groove and is rotatably connected to the inner wall of the annular groove through a bearing. The outer surface of the mounting sleeve 214 is provided with a sliding groove, and the outer surface of the slider 215 is slidably connected to the inner wall of the mounting sleeve 214. The mounting part 21 also includes a first sealing ring 211, a second sealing ring 212, an adjusting plate 213, a spring 216, a locking block 218, a limiting slider 219, a pressing block 210, a connecting rod 201, and an adjusting ring 217.

[0030] The adjusting plate 213 is threaded onto the outer surface of the mounting sleeve 214, the first sealing ring 211 is fixedly sleeved onto the outer surface of the adjusting plate 213, and the outer surface of the second sealing ring 212 is fixedly connected to the inner wall of the end cover 1.

[0031] The left end face of the locking block 218 is fixedly connected to the right end face of the end cover 1. The outer surface of the adjusting ring 217 has a locking hole, and the outer surface of the locking block 218 extends into the interior of the adjusting ring 217 and engages with the inner wall of the adjusting ring 217.

[0032] The inner wall of the end cap 1 is provided with a T-shaped slide groove. The outer surface of the limiting slider 219 is slidably connected to the inner wall of the T-shaped slide groove. The left end face of the limiting slider 219 is fixedly connected to the right end face of the extrusion block 210. The left end of the connecting rod 201 is hinged to the right end of the adjusting plate 213. The right end of the connecting rod 201 is hinged to the left end face of the extrusion block 210. An elastic gasket is fixedly connected to the outer surface of the extrusion block 210.

[0033] The inner wall of the adjusting ring 217 is fixedly connected to the outer surface of the slider 215. The right end of the spring 216 is fixedly connected to the inner wall of the mounting sleeve 214, and the left end of the spring 216 is fixedly connected to the right end face of the slider 215. By setting the first sealing ring 211, the second sealing ring 212, the adjusting plate 213, the mounting sleeve 214, the slider 215, the spring 216, the adjusting ring 217, the locking block 218, the limiting slider 219, the squeezing block 210, and the connecting rod 201, the outer surface of the first sealing ring 211 is attached to the inner wall of the pipe, and the inner wall of the second sealing ring 212 is attached to the outer surface of the pipe. By rotating the mounting sleeve 214, the adjusting plate 213 pushes the squeezing block 210 to move through the connecting rod 201, so that the outer surface of the squeezing block 210 squeezes the inner wall of the pipe, so that the sealing device 2 is stably installed at the end of the pipe. The elastic force of the spring 216 is used to make the locking block 218 lock the adjusting ring 217 and position the mounting sleeve 214, thereby improving the stability of the device installation.

[0034] The end cap 1 is provided with a sealing part 22;

[0035] The sealing part 22 includes an air guide tube 222, two fixed plates 223 and two movable plates 224. The outer surface of the air guide tube 222 is slidably connected to the inner wall of the mounting sleeve 214. The two movable plates 224 are disposed between the two fixed plates 223. The sealing part 22 also includes a third sealing ring 225, a fixing rod 226 and an airbag 227.

[0036] The left end face of the fixing rod 226 is fixedly connected to the right end face of the right fixing plate 223. The outer surface of the fixing rod 226 slides through the left end face of the adjusting plate 213 and extends to the right side of the adjusting plate 213. The right end face of the fixing rod 226 is connected to the inner wall of the end cover 1.

[0037] The fixed plate 223 is fixedly sleeved on the outer surface of the air guide pipe 222, and the movable plate 224 is slidably sleeved on the outer surface of the air guide pipe 222. The outer surfaces of the fixed plate 223 and the movable plate 224 are both fixedly connected to the outer surface of the third sealing ring 225 on the adjacent side. By setting the air guide pipe 222, the fixed plate 223, the movable plate 224, the third sealing ring 225 and the fixed rod 226, the end of the pipe is sealed by the extrusion force between the third sealing ring 225 and the inner wall of the pipe.

[0038] The outer surface of the airbag 227 is fixedly connected to the outer surface of the air guide tube 222, and the interior of the airbag 227 is connected to the interior of the air guide tube 222. A valve 221 is provided on the air guide tube 222. By setting the valve 221 and the airbag 227, high-pressure air is introduced into the air guide tube 222, causing the airbag 227 to inflate. The outer surface of the airbag 227 is pressed against the inner wall of the pipe to seal the end of the pipe. At the same time, the airbag 227 pushes the moving plate 224 to move. The moving plate 224 presses the third sealing ring 225, causing the third sealing ring 225 to deform and improving the sealing effect on the end of the pipe.

[0039] In use, the end cap 1 is fitted onto the end of the pipe, so that the outer surface of the first sealing ring 211 is in contact with the inner wall of the pipe, and the inner wall of the second sealing ring 212 is in contact with the outer surface of the pipe. One hand holds the end cap 1, and the other hand pulls the adjusting ring 217 to the right, so that the locking block 218 no longer limits the adjusting ring 217. Rotating the adjusting ring 217 causes the mounting sleeve 214 to rotate, and the mounting sleeve 214 drives the adjusting plate 213 to move to the right. Through the connecting rod 201, the pressing block 210 is pushed to move, so that the outer surface of the pressing block 210 is... The surface and elastic gasket press against the inner wall of the pipe, loosening the adjusting ring 217. The locking block 218 positions the adjusting ring 217, ensuring the device is stably installed at the end of the pipe. High-pressure gas is introduced into the guide tube 222, causing the airbag 227 to inflate. The outer surface of the airbag 227 presses against the inner wall of the pipe, while the airbag 227 pushes the moving plate 224 to move. The moving plate 224 presses against the third sealing ring 225, causing the third sealing ring 225 to deform and increasing the pressure between the third sealing ring and the inner wall of the pipe, thus enabling the inspection of the inside of the pipe.

[0040] 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 the 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. A pretreatment auxiliary device for trenchless pipeline repair defects, comprising an end cap (1), characterized in that: The end cap (1) is provided with a sealing device (2), which includes a mounting part (21). The mounting part (21) includes a mounting sleeve (214) and a slider (215). The outer surface of the mounting sleeve (214) is provided with an annular groove, and the outer surface of the end cap (1) is provided with a through hole. The inner wall of the end cap (1) extends into the annular groove and is rotatably connected to the inner wall of the annular groove through a bearing. The outer surface of the mounting sleeve (214) is provided with a sliding groove, and the outer surface of the slider (215) is slidably connected to the inner wall of the mounting sleeve (214). The end cap (1) is provided with a sealing part (22); The sealing part (22) includes an air guide pipe (222), two fixed plates (223) and two movable plates (224). The outer surface of the air guide pipe (222) is slidably connected to the inner wall of the mounting sleeve (214), and the two movable plates (224) are arranged between the two fixed plates (223).

2. The pretreatment auxiliary device for trenchless pipeline defect repair according to claim 1, characterized in that: The mounting part (21) further includes a first sealing ring (211), a second sealing ring (212), an adjusting plate (213), a spring (216), a locking block (218), a limiting slider (219), a pressing block (210), a connecting rod (201), and an adjusting ring (217). The adjusting plate (213) is threaded onto the outer surface of the mounting sleeve (214), the first sealing ring (211) is fixedly fitted onto the outer surface of the adjusting plate (213), and the outer surface of the second sealing ring (212) is fixedly connected to the inner wall of the end cap (1).

3. The pretreatment auxiliary device for trenchless pipeline defect repair according to claim 2, characterized in that: The left end of the connecting rod (201) is hinged to the right end of the adjusting plate (213), and the right end of the connecting rod (201) is hinged to the left end face of the extrusion block (210). An elastic gasket is fixedly connected to the outer surface of the extrusion block (210).

4. The pretreatment auxiliary device for trenchless pipeline defect repair according to claim 2, characterized in that: The inner wall of the end cap (1) is provided with a T-shaped groove, the outer surface of the limiting slider (219) is slidably connected to the inner wall of the T-shaped groove, and the left end face of the limiting slider (219) is fixedly connected to the right end face of the extrusion block (210).

5. The pretreatment auxiliary device for trenchless pipeline defect repair according to claim 2, characterized in that: The inner wall of the adjusting ring (217) is fixedly connected to the outer surface of the slider (215), the right end of the spring (216) is fixedly connected to the inner wall of the mounting sleeve (214), the left end of the spring (216) is fixedly connected to the right end face of the slider (215), the left end face of the locking block (218) is fixedly connected to the right end face of the end cap (1), the outer surface of the adjusting ring (217) is provided with a locking hole, and the outer surface of the locking block (218) extends into the interior of the adjusting ring (217) and engages with the inner wall of the adjusting ring (217).

6. The pretreatment auxiliary device for trenchless pipeline defect repair according to claim 1, characterized in that: The sealing part (22) also includes a third sealing ring (225), a fixing rod (226) and an airbag (227). The fixing plate (223) is fixedly sleeved on the outer surface of the air guide tube (222). The moving plate (224) is slidably sleeved on the outer surface of the air guide tube (222). The left end face of the fixing rod (226) is fixedly connected to the right end face of the right fixing plate (223). The outer surface of the fixing rod (226) slides through the left end face of the adjusting plate (213) and extends to the right side of the adjusting plate (213). The right end face of the fixing rod (226) is connected to the inner wall of the end cap (1). The outer surfaces of the fixing plate (223) and the moving plate (224) are both fixedly connected to the outer surface of the third sealing ring (225) on the adjacent side.

7. A pretreatment auxiliary device for trenchless pipeline defect repair according to claim 6, characterized in that: The outer surface of the airbag (227) is fixedly connected to the outer surface of the air duct (222), the inside of the airbag (227) is connected to the inside of the air duct (222), and a valve (221) is provided on the air duct (222).

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