A sewer leak sealing device

Abstract

This utility model discloses a drain pipe leak detection and sealing device. The second sealing mechanism includes a lower inner support block. A middle clamping plate is symmetrically fixedly connected to the top of the lower inner support block, and a lower clamping plate is symmetrically fixedly connected to the bottom of the lower inner support block. A rotating roller is rotatably connected inside the two lower clamping plates, and two rotating rollers are provided. An extension rod is fixedly connected to the lower clamping plates at the end away from the rotating roller. The extension rod extends obliquely away from the rotating roller, and an auxiliary wheel is rotatably connected to the end of the extension rod away from the lower clamping plate. The bottommost airbag structure assists the upper airbag in sealing. Even if water seeps in when the upper airbag is sealing, the lower airbag can also seal the seepage, ensuring that the drain pipe maintenance work can be carried out normally.

Description

Technical Field

[0001] This utility model relates to the field of pipe plugging technology, specifically to a drain pipe leak detection and plugging device. Background Technology

[0002] A drain pipe leak detector and sealant is a specialized tool used to detect and seal leaks in drainage pipes. It typically consists of a telescopic rod that extends into the pipe, sealing the leak through inflation, mechanical sealing, or rubber sealing. Its core components include a sealing body adapted to the pipe diameter and a telescopic rod that extends it. The model must be selected based on the pipe pressure, diameter, and operating environment to ensure sealing effectiveness and operational safety. This tool is widely used in household water pipe repairs, industrial pipeline maintenance without interrupting flow, and emergency repairs, effectively resolving leaks and ensuring the normal operation of pipelines.

[0003] Chinese patent discloses a municipal drainage pipe plugging device (publication number: CN219282751U). This device solves the problem in the prior art where traditional pipe plugging involves directly sealing the pipe with an airbag against the inner wall. However, the water flow inside the pipe exerts pressure on the airbag, and the airbag itself relies on expansion to contact the pipe, resulting in low friction and easy detachment of the airbag. But this device still has the following problems:

[0004] The aforementioned device seals the inside of the pipe through an inflated airbag structure. However, since only a single airbag structure is used as the sealing head, the sealing effect may be unsatisfactory and water leakage may occur when the airbag is inserted into the pipe due to excessive water pressure inside the pipe and damage to the surface of the airbag. Therefore, a drain pipe leak detection and sealing device is proposed to solve the above problems. Utility Model Content

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A drain pipe leak detection and sealing device includes a lifting mechanism, a first sealing mechanism is provided below the lifting mechanism, and a second sealing mechanism is provided below the first sealing mechanism.

[0007] The second sealing mechanism includes a lower inner support block. A middle clamping plate is symmetrically fixedly connected to the top of the lower inner support block, and a lower clamping plate is symmetrically fixedly connected to the bottom of the lower inner support block. A rotating roller is rotatably connected inside the two lower clamping plates, and two rotating rollers are provided in total. An extension rod is fixedly connected to the lower clamping plates at the end away from the rotating roller. The extension rod extends obliquely in the direction away from the rotating roller, and an auxiliary wheel is rotatably connected to the end of the extension rod away from the lower clamping plate.

[0008] As a further embodiment of this utility model: the first sealing mechanism includes an upper inner support block, the top of which is symmetrically and fixedly connected with an upper clamping plate, and a connecting ear is fixedly installed in the middle of the bottom of the upper inner support block. The lower end of the connecting ear is rotatably connected to both middle clamping plates.

[0009] As a further embodiment of this utility model: the lifting mechanism includes a hydraulic push rod, the extension end of the hydraulic push rod is fixedly connected to a telescopic rod, the bottom end of the telescopic rod is fixedly installed with a lifting block, the bottom side of the lifting block is fixedly installed with an extension block, and the surface side of the extension block is fixedly connected with a limit plate.

[0010] As a further embodiment of this utility model: the lower end of the extension block is rotatably connected to both upper clamping plates, and the surface of the limiting plate abuts against the side wall of the upper clamping plate.

[0011] As a further embodiment of this utility model: an upper airbag is fixedly and sealed to the lower end of the outer wall of the upper inner support block, and a lower airbag is fixedly and sealed to the lower end of the outer wall of the lower inner support block.

[0012] As a further embodiment of this utility model: an upper air supply hose is connected through the inner wall of the lifting block, and both ends of the upper air supply hose extend to the outside of the lifting block respectively. The lower end of the upper air supply hose passes through and is sealed and fixed to the upper inner support block, and the bottom opening of the upper air supply hose is connected through the inside of the upper airbag.

[0013] As a further embodiment of this utility model: a lower air supply hose is passed through and sealed and fixed to one end of the bottom surface of the upper airbag, the lower end of the lower air supply hose is passed through and sealed and fixed to the lower inner support block, and the lower airbag is connected through the bottom opening of the lower air supply hose.

[0014] The beneficial effects of this utility model are as follows: The sealing device designed in this utility model is equipped with two sealing mechanisms, each of which has an airbag inside. The airbags are connected to each other by a flexible air supply hose. The flexible air supply hose connected to the uppermost airbag can extend to the outside of the pipe opening, which facilitates the inflation of the two airbags outside the pipe when inflated through the flexible air supply hose, and seals the inside of the pipe. The bottommost airbag structure assists the upper airbag in sealing. Even if water leakage occurs when the upper airbag is sealing, the lower airbag can also seal the water leakage, ensuring that the maintenance work of the drainage pipe can be carried out normally. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

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

[0017] Figure 2This is a schematic diagram of the overall structure of the extension block in this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the lower clamping plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the upper and lower airbags located inside the pipeline in this utility model.

[0020] In the diagram: 1. Lifting mechanism; 101. Hydraulic push rod; 102. Telescopic rod; 103. Lifting block; 104. Upper air supply hose; 105. Extension block; 106. Limiting plate; 2. First sealing mechanism; 201. Upper inner support block; 202. Upper clamping plate; 203. Connecting ear; 204. Upper airbag; 205. Lower air supply hose; 3. Second sealing mechanism; 301. Lower inner support block; 302. Middle clamping plate; 303. Lower clamping plate; 304. Rotating roller; 305. Extension rod; 306. Auxiliary wheel; 307. Lower airbag. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-4 As shown, a drain pipe leak detector and plugging device includes a lifting mechanism 1, a first plugging mechanism 2 below the lifting mechanism 1, and a second plugging mechanism 3 below the first plugging mechanism 2. The second plugging mechanism 3 includes a lower inner support block 301, a middle clamping plate 302 symmetrically fixedly connected to the top of the lower inner support block 301, and a lower clamping plate 303 symmetrically fixedly connected to the bottom of the lower inner support block 301. A rotating roller 304 is rotatably connected inside both lower clamping plates 303, and two rotating rollers 304 are provided. An extension rod 305 is fixedly connected to the lower clamping plates 303 at the end away from the rotating roller 304. The extension rod 305 extends obliquely away from the rotating roller 304, and an auxiliary wheel 306 is rotatably connected to the end of the extension rod 305 away from the lower clamping plate 303. Figure 3 As shown, during the rotation of the second sealing mechanism 3 relative to the first sealing mechanism 2, the auxiliary wheel 306 can contact the inner wall of the pipe, thereby assisting the second sealing mechanism 3 to be inserted along the length of the pipe after rotation.

[0023] The first sealing mechanism 2 includes an upper inner support block 201. An upper clamping plate 202 is symmetrically fixedly connected to the top of the upper inner support block 201. A connecting ear 203 is fixedly installed in the middle of the bottom of the upper inner support block 201. The lower end of the connecting ear 203 is rotatably connected to both middle clamping plates 302. Figure 1 , Figure 3 As shown, a support hole is provided at the lower end of the connecting ear 203 to allow the clamping plate 302 to rotate.

[0024] The lifting mechanism 1 includes a hydraulic push rod 101, which can be an S313 series model. A telescopic rod 102 is fixedly connected to the extended end of the hydraulic push rod 101. A lifting block 103 is fixedly installed at the bottom end of the telescopic rod 102. An extension block 105 is fixedly installed on one side of the bottom of the lifting block 103. A limit plate 106 is fixedly connected to the side surface of the extension block 105. The lower end of the extension block 105 is rotatably connected to both upper clamping plates 202. The surface of the limit plate 106 abuts against the side wall of the upper clamping plate 202. Figure 2 As shown, when the plugging device hangs down naturally, the limiting plate 106 supports the upper clamping plate 202, thereby ensuring that the upper inner support block 201 is tilted as a whole. This facilitates the continued tilting and rotation of the upper inner support block 201 when it is inserted into the pipe, until the upper inner support block 201 is inserted along the length of the pipe.

[0025] An upper airbag 204 is fixedly and sealed to the lower end of the outer wall of the upper inner support block 201, and a lower airbag 307 is fixedly and sealed to the lower end of the outer wall of the lower inner support block 301. Figure 1 As shown, both the upper airbag 204 and the lower airbag 307 are silicone inflatable sealing rings.

[0026] An upper air supply hose 104 is connected through the inner wall of the lifting block 103. Both ends of the upper air supply hose 104 extend to the outside of the lifting block 103. The lower end of the upper air supply hose 104 is connected to and sealed to the upper inner support block 201. The bottom opening of the upper air supply hose 104 is connected to the inside of the upper airbag 204. A lower air supply hose 205 is connected to and sealed to one end of the bottom surface of the upper airbag 204. The lower end of the lower air supply hose 205 is connected to and sealed to the lower inner support block 301. The bottom opening of the lower air supply hose 205 is connected to and sealed to the lower airbag 307. Figure 1 As shown, both the upper gas delivery hose 104 and the lower gas delivery hose 205 are high-pressure rubber hoses.

[0027] The working principle of this utility model:

[0028] When inspecting drainage pipes, a bypass pipe is first prefabricated and connected to both ends of the main pipe working section. Then, a hole-drilling machine is used to cut bypass holes in the main pipe, and a plug is installed to isolate the working section. After the maintenance is completed, the bypass pipe is removed and the main pipe is restored to operation.

[0029] When installing the plugging device, ensure that the inner diameter of the pipe is approximately 2cm larger than the diameters of the upper inner support block 201 and the lower inner support block 301. First, insert the second plugging mechanism 3 into the pipe. The hydraulic push rod 101 can be supported outside the pipe. When the hydraulic push rod 101 is activated, it drives the telescopic rod 102 to extend, thereby simultaneously inserting the first plugging mechanism 2 and the second plugging mechanism 3 into the pipe. During this process, the auxiliary wheel 306 first contacts the bottom of the inner wall of the pipe. As the second plugging mechanism 3 continues to descend, under the push of water pressure and the movement of the auxiliary wheel 306 along the length of the pipe, the second plugging mechanism 3 rotates relative to the first plugging mechanism 2. Specifically, the middle clamping plate 302 rotates around the connecting ear 203. As the first plugging mechanism 2 continues to descend into the pipe, it is pushed by water pressure and guided by the horizontal movement of the second plugging mechanism 3 along the pipe, causing the first plugging mechanism 2 to rotate relative to the lifting mechanism 1. Specifically, the upper clamping plate 202 rotates around the extension block 105. Finally, as... Figure 4 As shown, the upper airbag 204 and the lower airbag 307 are arranged along the length of the pipeline. Finally, the upper airbag 204 is inflated through the upper air supply hose 104, and the lower airbag 307 is inflated through the lower air supply hose 205. As a result, the upper airbag 204 and the lower airbag 307 expand and seal the inside of the pipeline.

[0030] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A drain pipe leak detection and sealing device, comprising a lifting mechanism (1), a first sealing mechanism (2) being provided below the lifting mechanism (1), and a second sealing mechanism (3) being provided below the first sealing mechanism (2). Its features are, The second sealing mechanism (3) includes a lower inner support block (301). A middle clamping plate (302) is symmetrically fixedly connected to the top of the lower inner support block (301). A lower clamping plate (303) is symmetrically fixedly connected to the bottom of the lower inner support block (301). A rotating roller (304) is rotatably connected inside the two lower clamping plates (303). Two rotating rollers (304) are provided. An extension rod (305) is fixedly connected to the lower clamping plates (303) at the end away from the rotating roller (304). The extension rod (305) extends obliquely in the direction away from the rotating roller (304). An auxiliary wheel (306) is rotatably connected to the end of the extension rod (305) away from the lower clamping plate (303).

2. The drain pipe leak detection and sealing device according to claim 1, characterized in that, The first sealing mechanism (2) includes an upper inner support block (201), the top of which is symmetrically fixedly connected with an upper clamping plate (202), and the bottom middle of the upper inner support block (201) is fixedly installed with a connecting ear (203). The lower end of the connecting ear (203) is rotatably connected to both middle clamping plates (302).

3. A drain pipe leak detection and sealing device according to claim 2, characterized in that, The lifting mechanism (1) includes a hydraulic push rod (101), the extension end of which is fixedly connected to a telescopic rod (102), the bottom end of which is fixedly installed with a lifting block (103), the bottom side of which is fixedly installed with an extension block (105), and the surface side of the extension block (105) is fixedly connected with a limit plate (106).

4. A drain pipe leak detection and sealing device according to claim 3, characterized in that, The lower end of the extension block (105) is rotatably connected to both upper clamping plates (202), and the surface of the limiting plate (106) abuts against the side wall of the upper clamping plate (202).

5. A drain pipe leak detection and sealing device according to claim 4, characterized in that, The lower end of the outer wall of the upper inner support block (201) is connected to and sealed with an upper airbag (204), and the lower end of the outer wall of the lower inner support block (301) is connected to and sealed with a lower airbag (307).

6. A drain pipe leak detection and sealing device according to claim 5, characterized in that, The inner wall of the lifting block (103) is connected to an upper air supply hose (104). Both ends of the upper air supply hose (104) extend to the outside of the lifting block (103). The lower end of the upper air supply hose (104) is connected to the upper inner support block (201) and sealed and fixed. The bottom opening of the upper air supply hose (104) is connected to the inside of the upper airbag (204).

7. A drain pipe leak detection and sealing device according to claim 6, characterized in that, The lower air supply hose (205) is connected to and sealed at one end of the bottom surface of the upper airbag (204). The lower end of the lower air supply hose (205) is connected to and sealed to the lower inner support block (301). The lower airbag (307) is connected to the bottom opening of the lower air supply hose (205).

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