A leak-proof wall bushing sealing structure

Abstract

This utility model relates to the field of wall sleeve technology, specifically disclosing a leak-proof wall sleeve sealing structure. It includes an installation wall with a pre-embedded sleeve installed through its surface. A waterproof ring is fixedly connected to the outer surface of the pre-embedded sleeve. An inner pipe is installed in the cavity of the pre-embedded sleeve. Locking baffles are installed at both ends of the pre-embedded sleeve. A positioning groove is formed on the outer surface of the pre-embedded sleeve. A sliding groove is formed on the surface of the locking baffle, and a supporting slider is installed on the inner wall of the sliding groove of the locking baffle. This leak-proof wall sleeve sealing structure, through the cooperation of the L-shaped positioning groove, the sliding supporting slider, and the rotatable limiting disc, eliminates the need for the traditional "iron handle" that is easily blocked by pipelines. Workers can quickly complete the installation and removal of the locking baffle by simultaneously adjusting the supporting slider by rotating the limiting disc, significantly reducing operational obstacles in dense pipeline scenarios and improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wall sleeve technology, specifically a leak-proof wall sleeve sealing structure. Background Technology

[0002] Wall bushings, also known as wall-penetrating sleeves, waterproof sleeves, or wall-embedded pipes, are protective devices used when pipes or electrical lines pass through walls. In the construction industry, waterproof sleeves can be divided into rigid waterproof sleeves and flexible waterproof sleeves. Rigid waterproof sleeves are generally used in basements and other places where ordinary pipes pass through walls, which is beneficial for waterproofing the wall. Flexible waterproof sleeves are mainly used in places with high requirements for waterproofing and shock absorption, such as air-raid shelter walls and water tanks. In the power industry, AC wall bushings can be divided into dry capacitor-type AC wall bushings, such as silicone rubber bushings and porcelain insulated AC wall bushings, based on their materials.

[0003] Existing through-wall sleeve sealing structures, such as the one disclosed in publication number "CN222717660U", utilize the principle that "the sealing gland rotates while pressing against the second sealing ring...people can rotate the sealing gland by holding the iron handle, which is convenient to operate." However, in actual use, the sleeve needs to pass through various pipelines, making it inconvenient for workers to rotate the iron handle when disassembly and maintenance is required. The handle is easily blocked by pipelines, thus reducing work efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a leak-proof through-wall sleeve sealing structure to solve the problem mentioned in the background art that the sleeve needs to pass through various pipelines, which makes it inconvenient for workers to hold the iron handle and rotate it when disassembly and maintenance is required, and it is easy to be blocked by pipelines, thereby reducing work efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof through-wall sleeve sealing structure, comprising an installation wall, on which a pre-embedded sleeve is installed through, a waterproof ring is fixedly connected to the outer surface of the pre-embedded sleeve, an inner pipe is provided in the cavity of the pre-embedded sleeve, locking baffles are installed at both ends of the pre-embedded sleeve, a positioning groove is provided on the outer surface of the pre-embedded sleeve, a sliding groove is provided on the surface of the locking baffle, and a supporting slider is installed on the inner wall of the sliding groove of the locking baffle, an adjusting screw is installed through the surface of the supporting slider, a positioning block is installed on the outer surface of one end of the adjusting screw, a locking block is fixedly connected to the inner wall of the positioning groove, the supporting slider is L-shaped, and a limiting sliding post is fixed on the outer surface of one end of the supporting slider, a limiting disc is installed on the surface of the locking baffle, a limiting groove is provided on the surface of the limiting disc, and a seepage prevention mechanism is provided between the pre-embedded sleeve and the locking baffle.

[0006] Preferably, the positioning slot is an L-shaped design, the positioning slots are arranged in a circumferential array, the support slider is arranged correspondingly to the positioning slot, the support slider and the locking baffle are slidably connected, and a spring is connected between the support slider and the locking baffle.

[0007] Using the above technical solution, the L-shaped structure can achieve dual positioning of "insertion-rotation", which prevents the support slider from falling off along the axis when under force. The circumferential array can evenly distribute the force of the support slider on the pre-embedded sleeve, preventing structural deformation caused by local stress concentration. At the same time, it ensures that the locking baffle is coaxial with the pre-embedded sleeve after installation, avoiding sealing gaps caused by eccentricity.

[0008] Preferably, the adjusting screw and the supporting slider are rotatably connected, the adjusting screw and the positioning block are threadedly connected, and the positioning block and the supporting slider are slidably connected.

[0009] By adopting the above technical solution, it is ensured that the adjusting screw rotates only around its own axis and does not move synchronously with the support slider, thus avoiding the support slider from shifting during rotation, ensuring the stability of the positioning block's movement trajectory, and accurately aligning it with the locking block.

[0010] Preferably, the positioning block is L-shaped, and the surface of the positioning block facing the locking block is provided with a groove, and the locking block and the positioning block are engaged. The limiting slide post and the limiting slot are engaged.

[0011] Using the above technical solution, the arc-shaped limiting slot provides a preset rotation trajectory for the limiting slide column, restricts the rotation angle of the locking baffle, and avoids damage to parts caused by excessive rotation. At the same time, the locking structure can provide a "positioning prompt" after the locking baffle is installed in place, which makes it easy for staff to quickly confirm the installation status without the need for additional measuring tools.

[0012] Preferably, the limiting disc and the locking baffle are rotatably connected, the limiting slot is arc-shaped, and the limiting slot is arranged in a circumferential array.

[0013] By adopting the above technical solution, the limiting disc can be rotated independently. The position of all limiting slide columns can be adjusted synchronously by rotating the disc, eliminating the need to operate the support sliders one by one. This greatly simplifies the installation and disassembly process and is especially suitable for scenarios with dense pipelines and limited operating space.

[0014] Preferably, the seepage prevention mechanism includes a squeezing block, which is fixedly connected to the side surface of the locking baffle. The inner wall of the pre-embedded sleeve cavity is provided with two fixed supports, and the side surface of the fixed supports is fixedly connected with seepage prevention rubber blocks.

[0015] By adopting the above technical solution and fixing it to the locking baffle, it is ensured that the locking baffle can move the squeezing block synchronously when it is installed, without the need to adjust the anti-seepage components separately, simplifying the operation process. At the same time, the fixed connection avoids the anti-seepage failure caused by the squeezing block loosening.

[0016] Preferably, the compression block is annular in design, and the vertical cross-section of one end of the compression block is an isosceles trapezoidal in design. Both the fixing bracket and the waterproof block are annular in design, and the surface of the waterproof block is provided with annular grooves. One end of the compression block is in contact with the inner wall of the groove of the waterproof block.

[0017] By adopting the above technical solution, the annular structure is perfectly matched with the circular cross-section of the sleeve and inner pipe, achieving "full circumferential support" and "full circumferential sealing", avoiding the sealing dead angle of traditional non-annular structures. At the same time, the annular rubber block is subjected to more uniform stress and consistent deformation, thus extending its service life.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the leak-proof through-wall sleeve sealing structure: 1. Through the combination of L-shaped positioning slots, sliding support sliders and rotatable limiting discs, there is no need to rely on the traditional "iron handle" that is easily blocked by pipelines. Workers can adjust the support sliders simultaneously by rotating the limiting disc to quickly complete the installation and removal of the locking baffle, which greatly reduces operational obstacles in dense pipeline scenarios and improves maintenance efficiency. 2. The threaded connection between the adjusting screw and the positioning block achieves precise locking. The concave-convex fit between the L-shaped positioning block and the locking block, and the engagement between the limiting slide and the arc-shaped limiting slot, form a multi-limiting structure that can resist loosening caused by vibration and external impact, avoid locking failure, and ensure the long-term stability of the overall structure. 3. The isosceles trapezoidal cross-section design of the annular extrusion block can convert axial pressure into radial extrusion force during installation, forcing the annular anti-seepage block to expand into the gap between the pre-embedded sleeve and the inner pipe. The anti-seepage block supported by double fixed brackets forms a seal at both ends, covering the entire circumference without dead corners, effectively blocking the seepage path of water. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the connection between the wall and the pre-embedded sleeve of this utility model; Figure 2 This is a three-dimensional structural diagram of the connection between the inner pipe and the locking baffle of this utility model; Figure 3 This is a three-dimensional structural diagram of the connection between the pre-embedded sleeve and the positioning slot of this utility model; Figure 4 This is a three-dimensional structural diagram of the connection between the support slider and the adjusting screw of this utility model; Figure 5 This is a three-dimensional structural diagram of the connection between the adjusting screw and the positioning block of this utility model; Figure 6 This is a three-dimensional structural diagram of the connection between the fixed bracket and the anti-seepage rubber block of this utility model.

[0020] In the diagram: 1. Wall installation; 2. Embedded sleeve; 3. Waterproof ring; 4. Internal pipe; 5. Locking baffle; 6. Positioning groove; 7. Support slider; 8. Adjusting screw; 9. Positioning block; 10. Locking block; 11. Limiting slide column; 12. Limiting disc; 13. Limiting groove; 14. Extrusion block; 15. Fixed bracket; 16. Waterproof rubber block. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-6 This utility model provides a technical solution: a leak-proof through-wall sleeve sealing structure, including an installation wall 1, a pre-embedded sleeve 2, a waterproof ring 3, an inner pipe 4, a locking baffle 5, a positioning groove 6, a supporting slider 7, an adjusting screw 8, a positioning block 9, a locking block 10, a limiting sliding column 11, a limiting disc 12, a limiting groove 13, a squeezing block 14, a fixing bracket 15, and a leak-proof rubber block 16.

[0023] The wall 1 is installed with a pre-embedded sleeve 2 running through its surface. A waterproof ring 3 is fixedly connected to the outer surface of the pre-embedded sleeve 2. An inner pipe 4 is installed in the cavity of the pre-embedded sleeve 2. The positioning slot 6 is L-shaped and arranged in a circumferential array. The support slider 7 is correspondingly arranged with the positioning slot 6, and the support slider 7 and the locking baffle 5 are slidably connected. A spring is connected between the support slider 7 and the locking baffle 5. The pre-embedded sleeve 2 is fixed to the wall 1 through the wall. The waterproof ring 3 on its outer surface first blocks the leakage path between the wall and the sleeve. Then the inner pipe 4 is inserted into the cavity of the pre-embedded sleeve 2. The locking baffle 5 is aligned with both ends of the pre-embedded sleeve 2, so that the support slider 7 is correspondingly embedded in the circumferential array of L-shaped positioning slots 6. The spring provides pre-tightening force to the support slider 7, completing the initial positioning.

[0024] Locking baffles 5 are installed at both ends of the pre-embedded sleeve 2. A positioning groove 6 is opened on the outer surface of the pre-embedded sleeve 2. A sliding groove is provided on the surface of the locking baffle 5, and a support slider 7 is installed on the inner wall of the sliding groove of the locking baffle 5. The adjusting screw 8 is rotatably connected to the support slider 7, and the adjusting screw 8 is threadedly connected to the positioning block 9. The positioning block 9 is slidably connected to the support slider 7. When the adjusting screw 8 on the surface of the support slider 7 is rotated, the L-shaped positioning block 9 is driven to slide along the support slider 7 because the adjusting screw 8 is rotatably connected to the support slider 7 and threadedly connected to the positioning block 9. The threaded transmission drives the L-shaped positioning block 9 to slide along the support slider 7 until the groove of the positioning block 9 is completely engaged with the locking block 10 in the positioning groove 6, thereby fixing the locking baffle 5 and the pre-embedded sleeve 2.

[0025] An adjusting screw 8 is installed through the surface of the supporting slider 7. A positioning block 9 is installed on the outer surface of one end of the adjusting screw 8. A locking block 10 is fixedly connected to the inner wall of the positioning slot 6. The supporting slider 7 is L-shaped, and a limiting slide post 11 is fixed to the outer surface of one end of the supporting slider 7. The positioning block 9 is L-shaped, and a groove is provided on the surface of the positioning block 9 facing the locking block 10. The locking block 10 and the positioning block 9 are engaged. The limiting slide post 11 and the limiting slot 13 are engaged. The limiting disc 12 and the locking baffle 5 form a locking connection. The rotating connection and the limiting slot 13 are arc-shaped and arranged in a circular array. When unlocking, first rotate the adjusting screw 8 to unlock the positioning block 9 and the locking block 10. Then rotate the limiting disc 12 on the surface of the locking baffle 5. Since the limiting disc 12 is rotatably connected to the locking baffle 5, the arc-shaped limiting slot 13 in its circular array will drive the limiting slide column 11 to move until the limiting slide column 11 is engaged in the preset position of the limiting slot 13. This makes it easy for the limiting slide column 11 to drive the supporting slider 7 to move, thereby disassembling the positioning block 9 from the positioning slot 6.

[0026] A limiting disc 12 is installed on the surface of the locking baffle 5, and a limiting groove 13 is formed on the surface of the limiting disc 12. A seepage prevention mechanism is provided between the pre-embedded sleeve 2 and the locking baffle 5. The seepage prevention mechanism includes a compression block 14, which is fixedly connected to the side surface of the locking baffle 5. Two fixed supports 15 are provided on the inner wall of the cavity of the pre-embedded sleeve 2. Seepage prevention blocks 16 are fixedly connected to the side surface of the fixed supports 15. The compression block 14 is a ring design, and the vertical cross-section of one end of the compression block 14 is an isosceles trapezoidal design. The fixed supports 15 Both the anti-seepage block 16 and the anti-seepage block 16 are annular designs, and the surface of the anti-seepage block 16 is provided with annular grooves. One end of the extrusion block 14 fits against the inner wall of the groove of the anti-seepage block 16. During the fixing process of the locking baffle 5, the annular extrusion block 14 on its side surface gradually embeds into the annular groove of the anti-seepage block 16 in the cavity of the pre-embedded sleeve 2. Because the cross section of the extrusion block 14 is an isosceles trapezoid, it will exert radial extrusion on the anti-seepage block 16, so that the anti-seepage block 16, under the support of the fixed bracket 15, tightly fits the inner wall of the pre-embedded sleeve 2 and the outer wall of the inner pipe 4, forming an all-round seal.

[0027] Working principle: When using this leak-proof through-wall sleeve sealing structure, the pre-embedded sleeve 2 with waterproof ring 3 is installed on the installation wall 1. After the inner pipe 4 is inserted, the locking baffle 5 is aligned with both ends of the sleeve, so that the support slider 7 is embedded in the L-shaped positioning slot 6. The spring is pre-tightened for initial positioning. Then, the adjusting screw 8 is turned to drive the positioning block 9 to slide and engage with the locking block 10 to fix the baffle. When unlocking, the limiting disc 12 is turned, and the limiting slide column 11 is driven through the arc-shaped limiting slot 13, so that it drives the support slider 7 and the positioning block 9 to move to facilitate disengagement from the positioning slot 6. When the baffle is fixed, the annular extrusion block 14 is embedded in the groove of the leak-proof rubber block 16. The isosceles trapezoidal section generates radial extrusion, so that the leak-proof rubber block 16, under the support of the fixed bracket 15, fits the sleeve and the inner pipe to achieve leak prevention and increase the overall practicality.

[0028] 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. A leak-proof through-wall sleeve sealing structure, comprising an installation wall (1) on which a pre-embedded sleeve (2) is installed through the wall, characterized in that: A waterproof ring (3) is fixedly connected to the outer surface of the pre-embedded sleeve (2). An inner pipe (4) is provided in the cavity of the pre-embedded sleeve (2). Locking baffles (5) are installed at both ends of the pre-embedded sleeve (2). A positioning groove (6) is opened on the outer surface of the pre-embedded sleeve (2). A sliding groove is provided on the surface of the locking baffle (5), and a support slider (7) is installed on the inner wall of the sliding groove of the locking baffle (5). An adjusting screw (8) is installed through the surface of the support slider (7). A positioning block (9) is installed on the outer surface of one end of the adjusting screw (8), and a locking block (10) is fixedly connected to the inner wall of the positioning slot (6). The supporting slider (7) is L-shaped, and a limiting slide column (11) is fixed on the outer surface of one end of the supporting slider (7). A limiting disc (12) is installed on the surface of the locking baffle (5), and a limiting slot (13) is opened on the surface of the limiting disc (12). An anti-seepage mechanism is provided between the pre-embedded sleeve (2) and the locking baffle (5).

2. The wall sleeve sealing structure for preventing leakage according to claim 1, characterized in that: The positioning slot (6) is an L-shaped design, and the positioning slot (6) is arranged in a circular array. The support slider (7) is arranged corresponding to the positioning slot (6), and the support slider (7) and the locking baffle (5) form a sliding connection. A spring is connected between the support slider (7) and the locking baffle (5).

3. The wall sleeve sealing structure for preventing leakage according to claim 1, characterized in that: The adjusting screw (8) and the supporting slider (7) are rotatably connected, and the adjusting screw (8) and the positioning block (9) are threadedly connected, and the positioning block (9) and the supporting slider (7) are slidably connected.

4. The wall sleeve sealing structure for preventing leakage according to claim 1, characterized in that: The positioning block (9) is L-shaped, and the surface of the positioning block (9) facing the locking block (10) is provided with a groove. The locking block (10) and the positioning block (9) are engaged. The limiting slide (11) and the limiting slot (13) are engaged.

5. The leak-proof through-wall sleeve sealing structure according to claim 1, characterized in that: The limiting disc (12) and the locking baffle (5) are rotatably connected. The limiting slot (13) is arc-shaped and the limiting slot (13) is arranged in a circular array.

6. The seepage-proof wall sleeve sealing structure according to claim 1, characterized in that: The seepage prevention mechanism includes a squeezing block (14), which is fixedly connected to the side surface of the locking baffle (5). The inner wall of the cavity of the pre-embedded sleeve (2) is provided with two fixed supports (15), and the side surface of the fixed supports (15) is fixedly connected with seepage prevention rubber blocks (16).

7. The wall sleeve sealing structure for preventing leakage according to claim 6, characterized in that: The compression block (14) is a ring design, and the vertical cross section of one end of the compression block (14) is an isosceles trapezoid. The fixed bracket (15) and the anti-seepage block (16) are both ring designs, and the surface of the anti-seepage block (16) is provided with an annular groove. One end of the compression block (14) is in contact with the inner wall of the groove of the anti-seepage block (16).

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