Plugging device in pipeline

Abstract

The utility model relates to the technical field of pipeline repair, in particular to a plugging device in a pipeline. Comprising a fixing ring, a conical disc concentric with the fixing ring is arranged on one side of the fixing ring, an air bag ring is arranged between the conical disc and the fixing ring and fixed to the side, facing the conical disc, of the fixing ring, the outer edge of the air bag ring protrudes to the outer side of the fixing ring and the outer side of the conical disc, and fixing blocks are fixed to the two sides of the end, away from the conical disc, of the fixing ring correspondingly; the two screws are in threaded connection with the threaded sleeve, the opposite ends of the two screws are fixedly provided with top plates, the threaded sleeve is rotationally sleeved with a connecting assembly, the connecting assembly is fixedly connected with the fixing ring, the connecting assembly is in threaded connection with a bolt, the axis of the bolt is parallel to the axis of the fixing ring, and the bolt is rotationally connected with the conical disc. According to the plugging device, the expansion amount of the air bag ring in the radial direction of the fixing ring can be increased, the air bag ring can make rapid contact with the inner wall of a pipeline, and then plugging of the pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline repair, in particular to a pipeline internal plugging device. Background Art

[0002] Water-blocking airbags, also known as pipe-blocking airbags, water-blocking airbags, plugging airbags, and inflatable pipe plugs, are manufactured from high-molecular synthetic materials such as rubber and fiber fabrics through a high-temperature vulcanization process. They come in a variety of sizes and shapes and are used for pipeline and culvert water transport, sewage disposal, and silt removal. They are primarily used for drainage and sewage pipe repairs and water-blocking tests for leak detection. Before repairing a pipeline, both short sides of the pipeline to be repaired must be sealed.

[0003] Patent document CN212868970U discloses a multifunctional variable-diameter repair balloon for drainage pipes. To seal a drainage pipe, the balloon is first inserted into the pipe through a rigid water pipe guide. A rotating block is then rotated according to the pipe's inner diameter. The rotating block, driven by internal threaded grooves, moves the sealing bearing, which in turn moves a third sealing block. The third sealing block compresses or stretches the balloon body. Compression increases the balloon's radius, while stretching it decreases it. The radius is adjusted to fit the pipe. Air is then inflated into the air port, filling the air chamber and expanding the balloon, sealing the pipe. To prevent excessive construction time and congestion, the balloon can be connected to the pipe interface via a pipe connector to drain the sewage and discharge a small amount, preventing backflow. The balloon's radius increases by compressing the balloon body. The balloon's overall length is relatively large, requiring ample space for lowering into the pipe.

[0004] Patent document CN219734633U discloses an airbag sealing device for pipeline repair. When in use, the direction of the airbag is first adjusted according to the direction of the water flow so that the airbag faces the water flow. Then, the vertical plate on the fixed plate is brought into contact with the side wall of the manhole. The motor drives the screw to rotate. The screw drives the adapter ring to move away from the motor through threaded engagement. The adapter ring drives the slide on the fixed cylinder to slide away from the motor until the abutment plate contacts the side wall of the manhole opposite the vertical plate, thereby fixing the position of the airbag. The airbag is then inflated until it seals the pipeline. When stabilizing this device, the abutment plate needs to contact the side wall of the manhole opposite the vertical plate, which is inconvenient during stabilization. At the same time, when the airbag is inflated to seal the pipeline, the deformation of the end of the airbag away from the fixed plate cannot be controlled, and the expansion speed of the airbag along the radial direction of the pipeline is slow. Therefore, the airbag needs to be filled with more gas to maintain sufficient pressure on the inner wall of the pipeline to achieve sealing, so the sealing efficiency is low. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a pipeline plugger which can be conveniently and stably placed in a pipeline and can improve the efficiency of pipeline plugging.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A pipe plugger comprises a fixing ring, a cone disk concentric with the fixing ring is provided on one side of the fixing ring, an airbag ring is provided between the cone disk and the fixing ring, the airbag ring is fixed on the side of the fixing ring facing the cone disk, the outer edge of the airbag ring protrudes to the outside of the fixing ring and the cone disk, fixing blocks are fixed on both sides of the fixing ring away from the cone disk end, screws are slidably provided on the fixing blocks, the two screws are concentric, the thread directions of the two screws are opposite, the two screws are threadedly connected to the screw sleeves, top plates are fixed to the opposite ends of the two screws, a connecting assembly is provided on the screw sleeve, the connecting assembly is fixedly connected to the fixing ring, a bolt is threadedly connected to the connecting assembly, the axis of the bolt is parallel to the axis of the fixing ring, and the bolt is rotatably connected to the cone disk.

[0008] Specifically, a sliding rod parallel to the screw rod is fixed on the top plate, and the sliding rod is slidably connected to a fixed block on one side of the sliding rod.

[0009] Specifically, the connecting assembly includes a sleeve, which is rotatably sleeved on the outside of the screw sleeve, a connecting rod is fixed on the sleeve, and the connecting rod is fixedly connected to the fixing ring, an ear plate is fixed on one side of the sleeve, and a bolt passes through the ear plate and is threadedly connected to the ear plate.

[0010] Specifically, a plurality of polished rods are fixed on the cone disk, the axial directions of the polished rods are parallel to the axial direction of the bolts, and the polished rods pass through the fixing ring and are slidably connected thereto.

[0011] Specifically, the inflation nozzle of the airbag ring is located between the fixing ring and the cone disk.

[0012] Specifically, the airbag ring is in sealing contact with the cone disc.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This occluder is equipped with a cone disk on one side of a fixed ring, and an airbag ring is located between the fixed ring and the cone disk. When the airbag ring is inflated, the cone disk can block the end of the airbag ring away from the fixed ring, thereby increasing the expansion of the airbag ring along the radial direction of the fixed ring, and enabling the airbag ring to quickly contact the inner wall of the pipe to achieve sealing of the pipe.

[0015] 2. After turning the bolt, the distance between the cone disc and the fixed ring can be adjusted. The fixed ring and the cone disc can squeeze the airbag ring, which can increase the pressure between the airbag ring and the inner wall of the pipe and improve the sealing effect of the pipe.

[0016] 3. The two top plates are tightly against the inner wall of the pipeline, which can facilitate the stable insertion of the plug into the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the device.

[0018] Figure 2 Schematic diagram of the cooperation between the cone disc and the airbag ring.

[0019] Figure 3 This is a front view of the cone disc and airbag ring.

[0020] Figure 4 for Figure 3 Middle AA section view.

[0021] The names of the parts in the accompanying drawings are: 1. fixing ring, 2. cone disk, 3. polished rod, 4. airbag ring, 5. connecting rod, 6. ear plate, 7. bolt, 8. top plate, 9. sleeve, 10. screw sleeve, 11. screw, 12. slide rod, 13. fixing block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1: Reference Figure 1-Figure 4As shown, a pipe plugging device includes a fixed ring 1, with a conical disc 2 concentrically disposed on one side of the fixed ring 1. An airbag ring 4 is disposed between the conical disc 2 and the fixed ring 1. The airbag ring 4 is fixedly and sealingly connected to the side of the fixed ring 1 facing the conical disc 2. The inflation nozzle of the airbag ring 4 is located between the fixed ring 1 and the conical disc 2. The airbag ring 4 is in sealing contact with the conical disc 2. The outer edge of the airbag ring 4 protrudes outside the fixed ring 1 and the conical disc 2.

[0024] A fixing block 13 is fixed to each side of the end of the fixing ring 1 facing away from the conical disc 2. A screw 11 is slidably mounted on each fixing block 13. The two screws 11 are concentric, with opposite thread directions. They are threadedly connected to the threaded sleeve 10. The opposite ends of the two screws 11 are fixed to a top plate 8. Specifically, a sliding rod 12 parallel to the screw 11 is fixed to the top plate 8. The sliding rod 12 is slidably connected to the fixing block 13 on one side.

[0025] The rotating sleeve on the screw sleeve 10 is provided with a connecting assembly, which is fixedly connected to the fixing ring 1. The connecting assembly is threadedly connected with a bolt 7. The axis of the bolt 7 is parallel to the axis of the fixing ring 1. The bolt 7 is rotatably connected to the cone disk 2.

[0026] The connecting assembly includes a sleeve 9, which is rotatably sleeved on the outside of the threaded sleeve 10. A connecting rod 5 is fixed on the sleeve 9, and the connecting rod 5 is fixedly connected to the fixing ring 1. An ear plate 6 is fixed on one side of the sleeve 9, and a bolt 7 passes through the ear plate 6 and is threadedly connected to it.

[0027] When repairing a pipeline section, two of the present internal pipe plugging devices are placed in the pipeline on either side of the pipeline section. To stabilize the internal pipe plugging devices, the screw sleeve 10 is rotated. This rotation moves the two screws 11 away from each other, allowing the two top plates 8 to support the inner wall of the pipeline, thereby stabilizing the internal pipe plugging devices in the pipeline.

[0028] Then, the airbag ring 4 is inflated through the inflation nozzle, and the airbag ring 4 is inflated and sealed with the inner wall of the pipeline. At this time, the airbag ring 4 is sealed with the fixing ring 1 and the cone disk 2, and the pipeline plugging device realizes the plugging of the pipeline.

[0029] By arranging a cone disk 2 on one side of the fixed ring 1, the airbag ring 4 is located between the fixed ring 1 and the cone disk 2. When the airbag ring 4 is inflated, the cone disk 2 can block the end of the airbag ring 4 away from the fixed ring 1, thereby increasing the expansion amount of the airbag ring 4 along the radial direction of the fixed ring 1, and enabling the airbag ring 4 to quickly contact the inner wall of the pipeline to achieve sealing of the pipeline.

[0030] After turning the bolt 7, the distance between the cone disk 2 and the fixed ring 1 can be adjusted. The fixed ring 1 and the cone disk 2 can squeeze the airbag ring 4, which can increase the pressure between the airbag ring 4 and the inner wall of the pipeline and improve the sealing effect of the pipeline.

[0031] Embodiment 2: Based on embodiment 1, as shown in the figure, a plurality of polished rods 3 are fixed on the cone disk 2. The axial direction of the polished rods 3 is parallel to the axial direction of the bolts 7. The polished rods 3 pass through the fixing ring 1 and are slidably connected thereto.

[0032] When the bolt 7 is turned to reduce the distance between the cone disc 2 and the fixed ring 1, the multiple polished rods 3 enable the cone disc 2 to move concentrically relative to the fixed ring 1. The fixed ring 1 and the cone ring squeeze the airbag ring 4, ensuring uniform force applied by the airbag ring 4 to the inner wall of the pipe, further improving the sealing effect of the pipe. This also enhances the stability of the cone disc 2's movement.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipe plugging device, comprising a fixing ring (1), characterized in that: A conical disc (2) concentric with the fixed ring (1) is provided on one side thereof, an airbag ring (4) is provided between the conical disc (2) and the fixed ring (1), the airbag ring (4) is fixedly and sealedly connected to the side of the fixed ring (1) facing the conical disc (2), the outer edge of the airbag ring (4) protrudes to the outside of the fixed ring (1) and the conical disc (2), and fixed blocks (13) are fixed on both sides of the end of the fixed ring (1) away from the conical disc (2), and screws (11) are slidably provided on the fixed blocks (13). The two screw rods (11) are concentric, and the thread directions of the two screw rods (11) are opposite. The two screw rods (11) are threadedly connected to the screw sleeve (10). The opposite ends of the two screw rods (11) are fixed with a top plate (8). A connecting assembly is rotatably sleeved on the screw sleeve (10). The connecting assembly is fixedly connected to the fixing ring (1). A bolt (7) is threadedly connected to the connecting assembly. The axis of the bolt (7) is parallel to the axis of the fixing ring (1). The bolt (7) is rotatably connected to the cone disk (2).

2. The pipeline plugging device according to claim 1, characterized in that: A sliding rod (12) parallel to the screw rod (11) is fixed on the top plate (8), and the sliding rod (12) is slidably connected to a fixed block (13) on one side thereof.

3. The pipeline plugging device according to claim 1, characterized in that: The connecting assembly comprises a sleeve (9), the sleeve (9) being rotatably sleeved on the outside of a screw sleeve (10), a connecting rod (5) being fixed on the sleeve (9), the connecting rod (5) being fixedly connected to a fixing ring (1), an ear plate (6) being fixed on one side of the sleeve (9), a bolt (7) passing through the ear plate (6) and being threadedly connected thereto.

4. The pipeline plugging device according to claim 1, characterized in that: A plurality of polished rods (3) are fixed on the cone disk (2), the axial direction of the polished rods (3) is parallel to the axial direction of the bolts (7), and the polished rods (3) pass through the fixing ring (1) and are slidably connected thereto.

5. The pipeline plugging device according to claim 1, characterized in that: The inflation nozzle of the airbag ring (4) is located between the fixing ring (1) and the cone disk (2).

6. The pipeline plugging device according to claim 1, characterized in that: The air bag ring (4) is in sealing contact with the cone disk (2).

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