Cable wall bushing with sealing function

Abstract

The utility model discloses a cable wall bushing with a sealing function, which relates to the technical field of cable wall bushings and comprises an outer tube, a cable body, an embedded bushing and two sealing blocks. The embedded sleeve is located in an inner cavity of the outer pipe, the cable body penetrates through the embedded sleeve, a plurality of fixing grooves are symmetrically formed in the inner cavity of the outer pipe in an annular array mode, the sealing block is located in the inner cavity of the outer pipe, and a plurality of first connecting blocks are slidably connected to the middle of the sealing block in an annular array mode. The fixing grooves are symmetrically formed in the inner cavity of the outer tube in the annular array mode, so that when the air bag is inflated and expanded, the first connecting blocks can be pushed to move towards the fixing grooves, then the fixing grooves are matched with the first connecting blocks, the sealing blocks and the outer tube can be fixed together, the position of the outer tube can be limited, and the sealing effect is good. Through the sealing block, external moisture and water vapor can be prevented from entering the embedded sleeve and then damaging the interior of the embedded sleeve so as not to affect the protection of the embedded sleeve on the cable body.

Description

Technical Field

[0001] This utility model relates to the field of cable wall bushing technology, specifically to a cable wall bushing with sealing function. Background Technology

[0002] Cable conduits, as an important hardware accessory in electrical systems, are mainly used to protect the safety and stability of cables when passing through walls. Their design aims to ensure that the passage of cables through walls will neither damage the wall structure nor affect the normal use of the cables. Cable conduits are usually made of sturdy and durable materials, such as metal or plastic, to adapt to various complex building environments.

[0003] During building construction, in order to meet the electrical connection needs between different rooms and floors, cables often need to be laid through walls. In this process, the installation of cable conduits is particularly important. The traditional approach is to pre-embed a large-diameter conduit in the wall and then pass the cable through it. However, the conduit itself alone cannot achieve a good sealing effect, so additional sealing measures are required.

[0004] Currently, common methods for sealing cables passing through walls mainly include grouting and filling with foaming agents. Grouting involves injecting a specific grout into the wall bushing, which solidifies to form a sealing layer. Filling with foaming agents involves injecting foaming agent into the wall bushing, causing it to expand and fill the gap between the bushing and the cable, thereby achieving a sealing effect. However, both methods have certain shortcomings. Especially when the building vibrates, the cable is prone to loosening inside the wall bushing, leading to cracks or gaps in the sealing layer. This not only reduces the sealing effect but may also allow gas in special environments such as laboratories to leak through the cable installation location, threatening the safety and stability of the laboratory. Specifically, although grouting is less expensive, the strength and durability of the sealing layer are limited and easily affected by vibration and environmental factors. While foaming agent filling has better sealing and elasticity, the sealing effect may decrease due to aging and shrinkage of the foaming agent during long-term use. In addition, the foaming agent filling process is also more complex, requiring strict control of the injection volume and injection speed to ensure the uniformity and stability of the sealing layer. Given the shortcomings of existing sealing methods, it is particularly important to develop a cable wall bushing with better sealing performance, strong adaptability, and easy installation. Utility Model Content

[0005] The purpose of this utility model is to provide a cable through-wall bushing with sealing function to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A cable through-wall bushing with sealing function includes an outer tube, a cable body, a pre-embedded bushing, and two sealing blocks. The pre-embedded bushing is located inside the outer tube, and the cable body passes through the pre-embedded bushing. The outer tube has a number of fixing grooves arranged in a symmetrical annular array. The sealing blocks are located inside the outer tube. A number of connecting blocks are slidably connected in an annular array in the middle of the sealing blocks. An air bladder is provided in the inner cavity of the sealing blocks. The air bladder is used to push the connecting blocks to move towards the fixing grooves. Protective covers are fixedly connected to the sides of the two sealing blocks that are far apart from each other.

[0008] The above technical solution involves symmetrically arranged fixing slots in a ring within the outer tube's inner cavity. This allows the connecting block to move towards the fixing slots when the airbag inflates. The cooperation between the fixing slots and the connecting block secures the sealing block to the outer tube, limiting its position. The sealing block prevents external moisture and water vapor from entering the embedded sleeve and damaging its interior, thus affecting its protection of the cable. The airbag within the sealing block, when inflated, pushes the connecting block towards the fixing slots. While the groove moves, the airbag can also wrap around the outer surface of the cable body, thus protecting the cable body. The airbag is flexible and elastic, allowing it to always fit tightly against the surface of the cable body, enhancing the sealing of the cable installation point, making it less susceptible to vibrations in the chamber, and reducing the possibility of gas leakage in the laboratory. Furthermore, protective covers are fixedly connected to the two sealing blocks on the opposite sides, further protecting and sealing the airbag, preventing it from being punctured and causing gas leakage from the airbag cavity, which would affect the normal use of the airbag.

[0009] A further improvement of this utility model is that: on the side of the two sealing blocks that are far apart from each other, a number of connecting grooves are arranged in an annular array, and a connecting bolt is fixedly connected to the inner cavity of each of the connecting grooves; a number of connecting blocks II are fixedly connected in an annular array to the protective cover, and the connecting blocks II with the same center are slidably connected to the connecting bolts.

[0010] In the above technical solution, in order to protect the airbag and prevent it from being punctured or deflated, the protective cover is connected to the sealing block. The protective cover can protect the airbag. During the connection process, the connecting block 2 is placed in the inner cavity of the adjacent connecting groove. Then, the connecting bolt and nut are used to fix the connecting block 2. Then, the position of the protective cover can be fixed by the cooperation of several connecting blocks 2, thereby realizing the protection of the airbag by the protective cover.

[0011] A further improvement of the present invention is that: the pre-embedded sleeve is symmetrically and fixedly connected with a docking block on the side near the sealing block, the docking block and the sealing block are slidably connected, the sealing block is symmetrically and fixedly connected with a limit component on the side near the pre-embedded sleeve, and the docking block is provided with a limit groove for use with the limit component on the side near the limit component.

[0012] The above technical solution involves providing a limiting groove on the side of the docking block near the limiting component to cooperate with the limiting component. This allows the limiting groove to cooperate with the limiting component to limit and guide the position of the sealing block, facilitating the installation and connection of the pre-embedded sleeve and the sealing block.

[0013] A further improvement of the present invention is that the limiting component includes a housing and a spring. The housing is fixedly connected to the sealing block, and a locking block is slidably connected to the inner cavity of the housing. The side of the spring near the locking block is fixedly connected to the locking block, and the side of the spring away from the locking block is fixedly connected to the inner wall of the housing.

[0014] In the above technical solution, when the limiting groove contacts the locking block, the spring will extend under the elastic force of the spring, and then push the locking block into the inner cavity of the limiting groove, thereby limiting the position of the docking block and reducing the difficulty of the installation process.

[0015] A further improvement of this utility model is that: the outer surface of the sealing block is symmetrically provided with indicator grooves that cooperate with the limiting component on the side near the pre-embedded sleeve.

[0016] The above technical solution includes an indicator slot that works in conjunction with the limiting component, allowing workers to easily determine the position of the limiting component by observing the indicator slot.

[0017] A further improvement of the present invention is that: the sealing block has several sliding grooves arranged in a ring array in the middle, and the connecting block 1 is slidably connected to the inner cavity of the adjacent sliding groove. The connecting block 1 is T-shaped.

[0018] In the above technical solution, by setting the connecting block one as T-shaped, it is easier for the connecting block one to slide in the inner cavity of the slide groove.

[0019] A further improvement of this utility model is that the outer tube is made of stainless steel.

[0020] In the above technical solution, the outer pipe is in direct contact with the wall and concrete. By making the outer pipe with stainless steel, the service life of the outer pipe can be improved.

[0021] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0022] 1. This utility model provides a cable through-wall bushing with a sealing function. By symmetrically and annularly arranged fixing grooves in the inner cavity of the outer tube, the connecting block can be pushed towards the fixing grooves when the airbag is inflated. Then, by using the cooperation between the fixing grooves and the connecting block, the sealing block can be fixed together with the outer tube, which can limit the position of the outer tube. The sealing block can prevent external moisture and water vapor from entering the interior of the pre-embedded bushing and causing damage to the interior of the pre-embedded bushing, thereby affecting the protection of the cable body by the pre-embedded bushing.

[0023] 2. This utility model provides a cable through-wall sleeve with sealing function. By setting an airbag in the inner cavity of the sealing block, when the airbag is inflated, it pushes the connecting block towards the fixed groove, and at the same time, it can wrap the outer surface of the cable body. The airbag can protect the cable body. Moreover, the airbag has flexibility and elasticity, so it can always be in close contact with the surface of the cable body, which can enhance the sealing of the cable body installation point, making it less susceptible to the influence of room vibration and reducing the possibility of gas leakage in the laboratory. Furthermore, protective covers are fixedly connected to the two sealing blocks on the opposite sides, which can further protect and seal the airbag, preventing the airbag from being punctured and causing gas leakage from the inner cavity of the airbag, thus affecting the normal use of the airbag. In addition, the protective covers can further improve the sealing performance of the device, thereby improving the practicality and universality of the device.

[0024] 3. This utility model provides a cable through-wall sleeve with sealing function. In order to protect the airbag and prevent it from being punctured or deflated, the protective cover is connected to the sealing block. The protective cover can protect the airbag. During the connection process, the connecting block 2 is placed in the inner cavity of the adjacent connecting groove. Then, the connecting bolt and nut can be used to fix the connecting block 2. Then, the position of the protective cover can be fixed by the cooperation of several connecting blocks 2, thereby realizing the protection of the airbag by the protective cover, thus improving the practicality and universality of the device. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0028] Figure 3 This is a partial structural diagram of the present invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the docking block of this utility model;

[0030] Figure 5 This is a schematic diagram of the sealing block of this utility model. Figure 1 ;

[0031] Figure 6 This is a schematic diagram of the sealing block of this utility model. Figure 2 ;

[0032] Figure 7 This is a cross-sectional schematic diagram of the sealing block of this utility model;

[0033] Figure 8 This is a schematic diagram of the protective cover of this utility model;

[0034] Figure 9 This is a schematic diagram of the limiting component of this utility model;

[0035] Figure 10 This is a schematic diagram of the pre-embedded sleeve of this utility model.

[0036] In the diagram: 1. Outer tube; 11. Fixing groove; 2. Sealing block; 21. Connecting block one; 22. Limiting component; 221. Outer shell; 222. Spring; 223. Locking block; 23. Indicator groove; 24. Connecting groove; 25. Connecting bolt; 26. Slide groove; 3. Protective cover; 31. Connecting block two; 4. Cable body; 5. Airbag; 6. Embedded sleeve; 61. Butt joint block; 611. Limiting groove. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to embodiments:

[0038] Example 1

[0039] like Figures 1-5 As shown, this utility model provides a cable wall sleeve with sealing function, including an outer tube 1, a cable body 4, a pre-embedded sleeve 6, and two sealing blocks 2; the pre-embedded sleeve 6 is located in the inner cavity of the outer tube 1, the cable body 4 passes through the pre-embedded sleeve 6, the inner cavity of the outer tube 1 is symmetrically arranged with a number of fixing grooves 11, the sealing block 2 is located in the inner cavity of the outer tube 1, the middle of the sealing block 2 is slidably connected with a number of connecting blocks 21 in a circular array, the inner cavity of the sealing block 2 is provided with an airbag 5, the airbag 5 is used to push the connecting blocks 21 to move towards the fixing grooves 11, and the two sealing blocks 2 are fixedly connected with protective covers 3 on the sides that are far apart from each other.

[0040] In this embodiment, by providing a pre-embedded sleeve 6, a safe passage is provided for the cable body 4, avoiding direct contact between the cable body 4 and the wall material when passing through the wall, thereby reducing the risk of damage to the cable body 4 due to friction and compression. By symmetrically and annularly arraying several fixing grooves 11 in the inner cavity of the outer tube 1, it is convenient to push the connecting block 21 towards the fixing groove 11 when the airbag 5 is inflated. Then, by using the cooperation between the fixing groove 11 and the connecting block 21, the sealing block 2 can be fixed together with the outer tube 1, which can limit the position of the outer tube 1. The sealing block 2 can prevent external moisture and water vapor from entering the interior of the pre-embedded sleeve 6 and causing damage to the interior of the pre-embedded sleeve 6, thereby affecting the protection of the cable body 4 by the pre-embedded sleeve 6.

[0041] By providing an airbag 5 inside the sealing block 2, when the airbag 5 is inflated, it pushes the connecting block 21 towards the fixing groove 11. At the same time, the airbag 5 can also wrap the outer surface of the cable body 4, thus protecting the cable body 4. Moreover, the airbag 5 is flexible and elastic, so it can always be in close contact with the surface of the cable body 4, which can enhance the sealing of the cable body 4 installation point, making it less susceptible to the influence of room vibration and reducing the possibility of gas leakage in the laboratory. Furthermore, protective covers 3 are fixedly connected to the two sealing blocks 2 on the side that are far apart from each other, so that the protective covers 3 can further protect and seal the airbag 5, preventing the airbag 5 from being punctured and causing the gas inside the airbag 5 to leak out, thus affecting the normal use of the airbag 5. In addition, the protective covers 3 can further improve the sealing performance of the device.

[0042] Example 2

[0043] like Figure 4 and Figure 6 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the outer surface of the sealing block 2 is symmetrically provided with an indicator groove 23 that works in conjunction with the limiting component 22 on the side near the pre-embedded sleeve 6, and the outer tube 1 is made of stainless steel.

[0044] In this embodiment, when the cable body 4 needs to be installed through the wall, firstly, the outer tube 1 is placed in the reserved hole in the wall, and then the outer tube 1 is fixed with concrete. Since the outer tube 1 is made of stainless steel, it has good corrosion resistance and can extend the service life of the device. Then, the cable body 4 is passed through the protective cover 3, the air bag 5 and the inner cavity of the pre-embedded sleeve 6 in sequence. Next, the pre-embedded sleeve 6 is placed in the inner cavity of the outer tube 1, and then the pre-embedded sleeve 6 is fixed to the inner cavity of the outer tube 1 with foaming agent or grouting. Then, the two sides of the pre-embedded sleeve 6 need to be sealed. By pushing the sealing block 2 towards the pre-embedded sleeve 6, the air bag 5 can be moved towards the pre-embedded sleeve 6 together. During the movement, the operator needs to observe the position of the indicator groove 23 to judge the position of the limiting component 22 to prevent the docking block 61 from failing to slide and connect with the sealing block 2.

[0045] Example 3

[0046] like Figure 9 and Figure 10 As shown, based on Embodiment 2, this utility model provides a technical solution: Preferably, the pre-embedded sleeve 6 is symmetrically fixedly connected to the side of the sealing block 2, the docking block 61 is slidably connected to the sealing block 2, the sealing block 2 is symmetrically fixedly connected to the side of the pre-embedded sleeve 6, the docking block 61 is provided with a limiting groove 611 that cooperates with the limiting component 22 on the side of the docking block 61 near the limiting component 22, the limiting component 22 includes a shell 221 and a spring 222, the shell 221 is fixedly connected to the sealing block 2, the inner cavity of the shell 221 is slidably connected to a locking block 223, the side of the spring 222 near the locking block 223 is fixedly connected to the locking block 223, and the side of the spring 222 away from the locking block 223 is fixedly connected to the inner wall of the shell 221.

[0047] In this embodiment, after determining the position of the limiting component 22, the sealing block 2 is pushed to move towards the pre-embedded sleeve 6. Then, the docking block 61 will slide and connect with the sealing block 2. Next, the pre-embedded sleeve 6 will apply a force to the locking block 223, causing the locking block 223 to move away from the docking block 61. Then, the spring 222 will contract. When the limiting groove 611 contacts the locking block 223, under the elastic force of the spring 222, the spring 222 will extend, and then the locking block 223 will be pushed into the inner cavity of the limiting groove 611, thereby limiting the position of the docking block 61.

[0048] Example 4

[0049] like Figures 6-8As shown, based on embodiment 3, this utility model provides a technical solution: preferably, the two sealing blocks 2 are provided with a plurality of connecting grooves 24 in an annular array on the side away from each other, and the inner cavity of the plurality of connecting grooves 24 is fixedly connected with a connecting bolt 25. The protective cover 3 is fixedly connected with a plurality of connecting blocks 31 in an annular array, and the connecting blocks 31 with the same center are slidably connected to the connecting bolt 25. The middle part of the sealing block 2 is provided with a plurality of sliding grooves 26 in an annular array, and the connecting block 21 is slidably connected to the inner cavity of the adjacent sliding groove 26. The connecting block 21 is T-shaped.

[0050] In this embodiment, after determining the position of the sealing block 2, it is necessary to connect the sealing block 2 to the outer tube 1. By inflating the airbag 5, the airbag 5 can expand. During the expansion of the airbag 5, it will push the connecting block 21 towards the inner cavity of the adjacent fixing groove 11, and then push the upper part of the connecting block 21 into the inner cavity of the fixing groove 11, thereby completing the fixation of the position of the sealing block 2. At the same time, when the airbag 5 is inflated, it can wrap the cable body 4. Since the airbag 5 has flexibility and elasticity, the inner cavity of the airbag 5 can be tightly fitted to the outer surface of the cable body 4. The fit is improved, thus enhancing the overall sealing of the device. To protect the airbag 5 and prevent it from being punctured or deflated, the protective cover 3 is connected to the sealing block 2. The protective cover 3 protects the airbag 5. During the connection process, the connecting block 21 is placed in the inner cavity of the adjacent connecting groove 24. Then, the connecting bolt 25 and the nut are used to fix the connecting block 21. The position of the protective cover 3 is fixed by the cooperation of several connecting blocks 21, thereby achieving the protection of the airbag 5 by the protective cover 3 and further improving the sealing of the device.

[0051] The working principle of this cable wall bushing with sealing function is explained in detail below.

[0052] like Figures 1-10 As shown, when the cable body 4 needs to be installed through the wall, firstly, the outer tube 1 is placed in the reserved hole in the wall, and then the outer tube 1 is fixed with concrete. Since the outer tube 1 is made of stainless steel, it has good corrosion resistance and can extend the service life of the device. Then, the cable body 4 is passed through the protective cover 3, the air bag 5 and the inner cavity of the pre-embedded sleeve 6 in sequence. Next, the pre-embedded sleeve 6 is placed in the inner cavity of the outer tube 1, and then the pre-embedded sleeve 6 is fixed to the inner cavity of the outer tube 1 with foaming agent or grouting. Then, the two sides of the pre-embedded sleeve 6 need to be sealed. By pushing the sealing block 2 towards the pre-embedded sleeve 6, the air bag 5 can be moved towards the pre-embedded sleeve 6 together. During the movement, the staff needs to observe the position of the indicator groove 23 to judge the position of the limiting component 22 to prevent the docking block 61 from being unable to slide and connect with the sealing block 2.

[0053] After determining the position of the limiting component 22, the sealing block 2 is pushed to move towards the pre-embedded sleeve 6. Then, the docking block 61 will slide and connect with the sealing block 2. Next, the pre-embedded sleeve 6 will apply a force to the locking block 223, causing the locking block 223 to move away from the docking block 61. Then, the spring 222 will contract. When the limiting groove 611 contacts the locking block 223, the spring 222 will extend under the elastic force of the spring 222, and then the locking block 223 will be pushed into the inner cavity of the limiting groove 611, thereby limiting the position of the docking block 61.

[0054] After determining the position of the sealing block 2, it needs to be connected to the outer tube 1. By inflating the airbag 5, the airbag 5 expands. During the expansion of the airbag 5, it pushes the connecting block 21 towards the inner cavity of the adjacent fixing groove 11, and then pushes the upper part of the connecting block 21 into the inner cavity of the fixing groove 11, thereby fixing the position of the sealing block 2. At the same time, when the airbag 5 is inflated, it can wrap around the cable body 4. Due to the flexibility and elasticity of the airbag 5, the inner cavity of the airbag 5 can fit tightly against the outer surface of the cable body 4. This improves the overall sealing performance of the device. To protect the airbag 5 and prevent it from being punctured or deflated, the protective cover 3 is connected to the sealing block 2. The protective cover 3 protects the airbag 5. During the connection process, the connecting block 21 is placed in the inner cavity of the adjacent connecting groove 24. Then, the connecting bolt 25 and the nut are used to fix the connecting block 21. Then, the position of the protective cover 3 is fixed by the cooperation of several connecting blocks 21, thereby achieving the protection of the airbag 5 by the protective cover 3 and further improving the sealing performance of the device.

[0055] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A cable-through-wall bushing with sealing function, comprising an outer tube (1), a cable body (4), a pre-buried bushing (6) and two sealing blocks (2); characterized in that: The pre-buried sleeve (6) is located in the inner cavity of the outer pipe (1), the cable body (4) is arranged in the pre-buried sleeve (6), a plurality of fixed grooves (11) are symmetrically arranged in the inner cavity of the outer pipe (1), the sealing block (2) is located in the inner cavity of the outer pipe (1), a plurality of connecting blocks (21) are symmetrically and slidably connected to the middle part of the sealing block (2), the inner cavity of the sealing block (2) is provided with an air bag (5), the air bag (5) is used for pushing the connecting block (21) to move towards the fixed groove (11), and the side, away from each other, of the two sealing blocks (2) is fixedly connected with a protective cover (3).

2. The cable-through-wall bushing with sealing function according to claim 1, characterized in that: The side, away from each other, of the two sealing blocks (2) is annularly provided with a plurality of connecting grooves (24), the inner cavities of the connecting grooves (24) are fixedly connected with connecting bolts (25), and the protective cover (3) is annularly fixedly connected with a plurality of connecting blocks (31), and the connecting blocks (31) and the connecting bolts (25) are slidably connected with the same center.

3. The cable-through-wall bushing with sealing function according to claim 2, characterized in that: The side, close to the sealing block (2), of the pre-buried sleeve (6) is symmetrically fixedly connected with a butt block (61), the butt block (61) is slidably connected with the sealing block (2), and the side, close to the pre-buried sleeve (6), of the sealing block (2) is symmetrically fixedly connected with a limiting assembly (22), and the side, close to the limiting assembly (22), of the butt block (61) is provided with a limiting groove (611) matched with the limiting assembly (22).

4. The cable-through-wall bushing with sealing function according to claim 3, characterized in that: The limiting assembly (22) comprises an outer shell (221) and a spring (222), the outer shell (221) is fixedly connected with the sealing block (2), the inner cavity of the outer shell (221) is slidably connected with a clamping block (223), one side, close to the clamping block (223), of the spring (222) is fixedly connected with the clamping block (223), and the other side, away from the clamping block (223), of the spring (222) is fixedly connected with the inner wall of the outer shell (221).

5. The cable-through-wall bushing with sealing function according to claim 2, characterized in that: The side, close to the pre-buried sleeve (6), of the outer surface of the sealing block (2) is symmetrically provided with an indicating groove (23) matched with the limiting assembly (22).

6. The cable-through-wall bushing with sealing function according to claim 5, characterized in that: The middle part of the sealing block (2) is annularly provided with a plurality of sliding grooves (26), the connecting block (21) is slidably connected with the inner cavities of adjacent sliding grooves (26), and the connecting block (21) is T-shaped.

7. The cable-through-wall bushing with sealing function according to claim 1, characterized in that: The outer pipe (1) is made of stainless steel.

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