wall penetration closure

Abstract

This utility model discloses a through-wall sealing device, comprising a first half, a second half, and stuffing glands disposed on the first and second halves. The first and second halves are detachably mounted on opposite sides of a wiring passage area on a wall, and the first and second halves can be interlocked. When the wire harness passes through the stuffing glands on the first and second halves of the wiring passage area, the wiring passage area is sealed. This through-wall sealing device, through its interlocking first and second halves, allows for quick replacement of stuffing glands of different sizes without complex disassembly of the entire structure when replacing them with different specifications. Only the two halves need to be separated, shortening disassembly and assembly time, improving sealing efficiency, and enhancing operational convenience.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, and in particular to a through-wall sealing device. Background Technology

[0002] Cleanrooms, as special spaces with strict requirements for air cleanliness and airtightness, require simultaneous compliance with both the ability of wire harnesses to pass through walls and the airtightness of the wiring area during wiring installation. This is crucial to prevent external contaminants from entering or internal clean air from leaking, ensuring the normal operation of production and experimental activities within the cleanroom. However, in actual wiring, various wire harness specifications and different diameters and quantities require correspondingly sized stuffing boxes to achieve effective sealing. Therefore, frequent adjustments or replacements of stuffing boxes are necessary depending on the specific wire harness requirements.

[0003] Traditional through-wall sealing structures are mostly integrated designs. When it is necessary to replace the stuffing gland of different specifications to adapt to different wire harnesses, the entire sealing structure must be completely removed from the wall. Not only are the disassembly steps cumbersome, but the whole process is also time-consuming. Especially in cleanrooms where wire harnesses need to be replaced frequently or in batches of wiring, this seriously affects the overall progress of the wiring sealing operation. Utility Model Content

[0004] This utility model provides a through-wall sealing device to overcome the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A through-wall sealing device includes a first half, a second half, and a stuffing box disposed on the first half and the second half. The first half and the second half can be detachably installed on both sides of a wiring area on a wall, and the first half and the second half can be plugged and fastened together. When the wire harness passes through the stuffing box on the first half and the stuffing box on the second half of the wiring area, the wiring area can be sealed.

[0006] Furthermore, both the first half and the second half include an abutment plate and an insertion edge disposed on the abutment plate; when the first half and the second half are respectively inserted and fastened on both sides of the wall, the insertion edge on the second half can abut against the inner wall of the insertion edge on the first half; after the first half and the second half are inserted and fastened, the abutment plate abuts against the wall.

[0007] Furthermore, both the abutment plate of the first half and the abutment plate of the second half are provided with a plurality of mounting holes of different sizes, and the stuffing boxes of different sizes are respectively fixed at the mounting holes of the corresponding sizes.

[0008] Furthermore, the abutment plate is provided with a rubber pad, which abuts against the wall when the first half and the second half are installed at the wiring area on the wall.

[0009] Furthermore, the abutment plate is provided with fixing holes for fixing the first half and the second half to the wall.

[0010] Furthermore, the outside of the threaded portion of the stuffing box is coated with a sealing material.

[0011] The beneficial effects of this utility model are: The wall-penetrating sealing device disclosed in this utility model, through the provision of a first half and a second half that can be plugged and fastened together, allows for quick replacement of different specifications of stuffing glands without complex disassembly of the entire structure when dealing with wire harnesses of different sizes that need to be replaced with stuffing glands of corresponding specifications. This shortens the disassembly and assembly time, improves the efficiency of sealing operations, and enhances the ease of operation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a through-wall sealing device structure disclosed in an embodiment of this utility model; Figure 2 This is a top sectional view of a through-wall sealing device disclosed in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the first half of a through-wall sealing device disclosed in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the second half of a through-wall sealing device disclosed in an embodiment of this utility model.

[0014] In the picture: 1. First half; 2. Second half; 3. Stuffing gland; 4. Wall; 5. Wiring area; 6. Abutment plate; 7. Insertion edge; 8. Mounting hole; 9. Rubber pad; 10. Fixing hole; 11. Wire harness. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] Example: like Figure 1-2 The image shows a wall-penetrating airtight device provided in this embodiment, including a first half 1, a second half 2, and a stuffing box 3 disposed on the first half 1 and the second half 2. The first half 1 and the second half 2 can be detachably installed on both sides of the wiring area 5 (a reserved area on the clean room wall 4 for wire harness passage) on the wall 4, and the first half 1 and the second half 2 can be plugged and fastened together. When the wire harness 11 passes through the stuffing box 3 installed on the first half 1 and the second half 2 of the wiring area 5, the wiring area 5 can be sealed.

[0017] This utility model discloses a wall-penetrating sealing device. Through its interlocking first and second halves, it eliminates the need for complex disassembly of the entire structure when replacing stuffing glands of different sizes of wire harnesses. The replacement can be quickly completed by simply separating the two halves, shortening disassembly and assembly time, improving sealing efficiency, and enhancing operational convenience. Simultaneously, the wire harnesses can pass centrally through the stuffing glands on both halves, preventing haphazard distribution and facilitating subsequent inspection, maintenance, and organization of the cables, while also reducing management difficulties caused by tangled wires. Furthermore, the stuffing glands on both the first and second halves provide bidirectional support and protection for the wire harnesses passing through the wall, reducing damage caused by bending and friction at the wall penetration point and better ensuring the performance and lifespan of the wire harnesses.

[0018] In a specific embodiment, such as Figure 3-4 As shown, both the first half 1 and the second half 2 include an abutment plate 6 and an insertion edge 7 provided on the abutment plate 6. When the first half 1 and the second half 2 are inserted and fastened on both sides of the wall 4 (both sides of the wiring area 5), ​​the insertion edge 7 on the second half 2 can abut against the inner wall of the insertion edge 7 on the first half 1. After the first half 1 and the second half 2 are inserted and fastened, the abutment plate 6 abuts against the wall 4.

[0019] In this embodiment, the insertion edge 7 is vertically disposed on the abutment plate 6, and the cross-section of the insertion edge 7 is rectangular. During the insertion process of the second half 2 and the first half 1, the insertion edge 7 of the second half 2 and the insertion edge 7 of the first half 1 work together to guide the wires in both the horizontal direction (parallel to the horizontal direction of the wall 4 plane) and the vertical direction (parallel to the vertical direction of the wall 4 plane), thereby ensuring the stability of the installation position after the first half 1 and the second half 2 are engaged. At the same time, it can ensure that after the first half 1 and the second half 2 are engaged, the filling gland 3 on the first half 1 and the filling gland 3 on the second half 2 are positioned correspondingly, so that the wire harness can smoothly pass through the filling gland 3 on the first half 1 and the filling gland 3 on the second half 2 in sequence without the need to adjust the wire harness insertion angle, thus improving the wire pulling efficiency.

[0020] In a specific embodiment, both the abutment plate 6 of the first half 1 and the abutment plate 6 of the second half 2 are provided with a plurality of mounting holes 8 of different sizes (inner diameters). The stuffing boxes 3 of different sizes are respectively fixed at the mounting holes 8 of the corresponding sizes. The plurality of mounting holes 8 of different sizes provided on the first half 1 and the second half 2 can respectively fix stuffing boxes 3 of different specifications, and simultaneously adapt to the passage of wire harnesses of various diameters, thereby improving the adaptability of wire harnesses through walls in different scenarios.

[0021] In this embodiment, the outer peripheral wall of the stuffing box 3 is provided with external threads, and the inner wall of the mounting hole 8 of the corresponding size is provided with internal threads. The stuffing box 3 is fixed to the mounting hole 8 by means of thread engagement. At the same time, an aging-resistant sealant is applied to the mating surface of the stuffing box 3 and the mounting hole 8 to enhance the connection stability, so as to prevent the stuffing box 3 from loosening due to vibration or wire harness pulling during use, and to fill the sealing gap and improve the overall airtightness of the wire threading area 5.

[0022] In a specific embodiment, the abutment plate 6 is provided with a rubber pad 9. When the first half 1 and the second half 2 are installed at the wiring area 5 on the wall 4, the rubber pad 9 abuts against the wall 4, thereby ensuring that the wiring area 5 is sealed and isolated from the outside world, preventing air, dust and other impurities from entering the clean room through the gap between the abutment plate 6 and the wall 4; at the same time, the rubber pad 9 can buffer the pressure of the abutment plate 6 on the wall 4, reduce the wear on the surface of the wall 4 during installation, and protect the structural integrity of the wall 4.

[0023] In a specific embodiment, the abutment plate 6 is provided with fixing holes 10 for fixing the first half 1 and the second half 2 to the wall 4.

[0024] The first half 1 and the second half 2 can be quickly connected or disassembled to the wall 4 using bolts and other fasteners through the fixing holes 10, without the need for complicated tools, which greatly improves the efficiency of disassembly and assembly and facilitates the replacement of the corresponding stuffing box 3 according to changes in wire harness specifications and quantity. At the same time, the setting of the fixing holes 10 can ensure the stability of the connection between the first half 1 and the second half and the wall 4, and avoid the misalignment of the insertion edge 7 and the deviation of the stuffing box 3 due to the displacement of the half, thereby ensuring that the wiring area 5 is always in a tight seal and preventing impurities from entering the clean room.

[0025] In a specific embodiment, the outer surface of the wire-passing area of ​​the stuffing box 3 is coated with a sealing material, that is, the outer surface of the gap between the outer end of the stuffing box 3 and the wire harness is coated with a sealing material to further ensure the airtightness of the wire-passing area. The sealing material can be a silicone sealant, nitrile rubber sealant, or PTFE sealing tape, which combines good sealing performance and aging resistance, to adapt to the long-term use environment of cleanrooms. When it is necessary to replace the stuffing box 3 with a different specification, after the wire harness is pulled out from the stuffing box 3 (the internal wire-passing hole), the residual sealing material can be wiped clean with a non-corrosive solvent (such as isopropanol) to avoid the residual material affecting the sealing effect of the new stuffing box 3. The stuffing box 3 has a conventional structure, which includes a metal shell and rubber. The metal shell has a through rubber mounting hole, and the rubber is placed in the rubber mounting hole of the metal shell. The rubber has a wire pass-through hole that is compatible with the wire harness. The wire harness can pass through the wire pass-through hole on the rubber. The rubber has a certain elasticity and can tightly wrap the outer wall of the wire harness, initially filling the gap between the wire harness and the rubber. Combined with the sealing material at the wire pass-through point, a double sealing structure is formed, which further improves the sealing performance of the wire pass-through area 5.

[0026] At the point where the edge of the rubber pad contacts the wall 4, a pre-formed sealing foam strip (such as EPDM foam strip) can be used with an easy-to-peel quick-drying sealant for sealing. This does not affect the assembly and disassembly efficiency of the device and further ensures the sealing of the wiring area 5. During installation, first, attach the pre-formed sealing foam strip to the edge of the abutment plate 6 and the edge of the rubber pad. The foam strip has self-adhesive backing and can be directly attached and positioned. Then, apply a thin layer of quick-drying sealant (not exceeding 1mm thickness) to the gap where the foam strip contacts the wall 4. During disassembly, simply use a screwdriver to gently pry the edge of the abutment plate 6. The low-viscosity sealant will peel off from the surface of the wall 4 along with the foam strip, leaving very little residue. It can be wiped clean with a dry cloth. The entire assembly and disassembly process takes less than 5 minutes. Alternatively, quick-drying sealant can be directly used to seal the contact point between the edge of the rubber pad 9 (abutment edge) and the wall 4.

[0027] The method of using the through-wall sealing device of this utility model is as follows: 1. First, install the first half on one side of the wiring area of ​​the wall, so that the insertion edge of the first half extends into the interior of the wiring area, and the rubber pad on the abutting edge of the first half abuts against the wall. Use screws to fix the first half to the screw hole reserved on the wall. 2. Then install the second half on the other side of the wiring area. Insert the second half into the first half until the rubber pad on the second half abuts against the wall. Use screws to fix the second half to the pre-drilled screw holes on the wall to complete the insertion and engagement of the first half and the second half. 3. Pass the wire harness through the stuffing glands on the two halves in sequence, ensuring that the wire harness fits snugly against the rubber wire holes inside the stuffing glands; 4. Apply silicone sealant to the packing of the stuffing box to enhance the sealing effect; 5. Finally, apply a thin layer of quick-drying sealant to the edges of the two halves of the connecting plate and the contact points between the rubber pad and the wall. After the sealant has cured, the wiring and sealing work is complete. If you need to replace the wire harness or stuffing box with a different specification later, you can first peel off the edge sealant, remove the screws, disassemble the two halves, clean off the old sealant, and then repeat the above steps.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A through-wall sealing device, characterized in that, It includes a first half (1), a second half (2), and a stuffing box (3) disposed on the first half (1) and the second half (2). The first half (1) and the second half (2) can be detachably installed on both sides of the wiring area (5) on the wall (4), and the first half (1) and the second half (2) can be plugged in and fastened. When the wire harness (11) passes through the stuffing box (3) on the first half (1) and the stuffing box (3) on the second half (2) of the wiring area (5), the wiring area (5) can be sealed.

2. The through-wall sealing device according to claim 1, characterized in that, Both the first half (1) and the second half (2) include an abutment plate (6) and an insertion edge (7) provided on the abutment plate (6); when the first half (1) and the second half (2) are inserted and fastened on both sides of the wall (4), the insertion edge (7) on the second half (2) can abut against the inner wall of the insertion edge (7) on the first half (1); after the first half (1) and the second half (2) are inserted and fastened, the abutment plate (6) abuts against the wall (4).

3. The through-wall sealing device according to claim 2, characterized in that, The first half (1) and the second half (2) are provided with several mounting holes (8) of different sizes. The stuffing boxes (3) of different sizes are respectively fixed at the mounting holes (8) of the corresponding sizes.

4. The through-wall sealing device according to claim 2, characterized in that, The abutment plate (6) is provided with a rubber pad (9). When the first half (1) and the second half (2) are installed at the wire-passing area (5) on the wall (4), the rubber pad (9) abuts against the wall (4).

5. The through-wall sealing device according to claim 2, characterized in that, The abutment plate (6) is provided with fixing holes (10) for fixing the first half (1) and the second half (2) to the wall (4).

6. The through-wall sealing device according to claim 1, characterized in that, The outside of the threaded portion of the stuffing box (3) is coated with a sealing material.

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