An explosion-proof terminal box shell

Abstract

This utility model discloses an explosion-proof junction box housing, specifically relating to the field of electrical equipment technology. It includes a junction box with a hinged door at the front. Bolts are threaded inside the door and connected to the front thread of the junction box. A first sealing strip is fixedly connected to the top of the door, and a second sealing strip is installed at the top of the first sealing strip. The second sealing strip is fixedly connected to the junction box. A sealing assembly is installed inside the junction box, and an explosion-proof mechanism is installed on the outside. This utility model, by setting up the sealing assembly and the explosion-proof mechanism, can form two independent sealing barriers, effectively preventing external gases, liquids, or dust from entering the junction box and causing an explosion. Simultaneously, it can disperse stress and absorb energy, reducing the risk of the junction box housing cracking.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to an explosion-proof junction box housing. Background Technology

[0002] An explosion-proof junction box is a device used to safely connect and distribute cables in an atmosphere containing explosive gases. It is designed to prevent explosive gases from entering the junction box to ensure the safe operation of electrical equipment in hazardous environments.

[0003] During the installation and use of explosion-proof junction boxes, multiple fixing screws and disassembly / installation tools are usually used to directly fix the explosion-proof junction box in one place, thus completing the installation work. However, in actual operation, after the explosion-proof junction box is installed and fixed, if the cable inside the junction box is damaged, it is necessary to repair the cable inside the junction box, and the junction box itself needs to be disassembled, replaced, and reinstalled. Since the explosion-proof junction box is installed using multiple fixing screws and disassembly / installation tools, disassembly and installation require specific tools, which is not only inconvenient, but also involves complicated disassembly and installation procedures, which wastes a lot of time and reduces the installation efficiency of the explosion-proof junction box.

[0004] A search revealed that Chinese Patent CN221688234U discloses an explosion-proof junction box housing installation structure. A first protective shell is used to place the explosion-proof junction box housing body and simultaneously protect it. A clamping mechanism is used to clamp the explosion-proof junction box housing body. This allows for the disassembly and installation of the explosion-proof junction box housing body without the need for numerous disassembly tools when the wires inside the housing body are damaged and require replacement or repair. The clamping mechanism simplifies and facilitates the disassembly and installation process, solving the problem of complex disassembly and installation during wiring of the explosion-proof junction box housing body.

[0005] In actual use, the aforementioned explosion-proof junction box housing structure may allow external flammable gases, liquids, or dust to seep into the interior through the gaps in the junction box, come into contact with electrical components, and cause short circuits, arcing, or overheating, which could then lead to fires or explosions and cause electrical faults. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an explosion-proof junction box housing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: An explosion-proof junction box housing includes a junction box with a cabinet door hinged to its front side. A bolt is threaded inside the cabinet door and threaded to the front side of the junction box. A first sealing strip is fixedly connected to the top of the cabinet door, and a second sealing strip is installed at the top of the first sealing strip. The second sealing strip is fixedly connected to the junction box. A sealing assembly is installed inside the junction box, and an explosion-proof mechanism is installed on the outside of the junction box, including multiple conduits that penetrate the junction box. Limiting rings are provided at both ends of the conduits, and these limiting rings are fixedly connected to the inside of the junction box. A threaded ring is threaded inside each limiting ring, and a turntable is fixedly connected to the top of the threaded ring. A sliding ring is fixedly connected to the bottom of the threaded ring, and two downward pressure rings are slidably connected to the outside of the sliding ring. The downward pressure rings are slidably connected to the inside of the limiting rings, and a compression ring is fixedly connected to the bottom of the downward pressure ring. A first sealing ring is provided inside the compression ring, and the outside of the first sealing ring is adapted to the compression ring. A second sealing ring is fixedly connected to the bottom of the first sealing ring.

[0008] By adopting the above technical solution, two independent sealing barriers can be formed, which can reduce electrical faults or short circuits caused by environmental factors.

[0009] As a further description of the above technical solution: the explosion-proof mechanism includes two limiting toothed rings, which are fixedly connected to the outside of the junction box. An explosion-proof shell is fixedly connected to the outside of the limiting toothed rings. Multiple first reinforcing ribs and second reinforcing ribs are fixedly connected inside the explosion-proof shell. One end of each of the first and second reinforcing ribs is fixedly connected to the outside of the junction box. The conduit passes through the inside of the explosion-proof shell. The bottom end of the explosion-proof shell is fixedly connected to multiple other limiting rings.

[0010] By adopting the above technical solutions, the inner strength of the explosion-proof enclosure can be increased, and the explosion-proof pressure resistance of the junction box enclosure can be improved.

[0011] The technical effects and advantages of this utility model are as follows: 1. By setting up a sealing component, compared with the existing technology, both the first sealing ring and the second sealing ring can be attached to the wire inside the limiting ring to form a double seal. The limiting ring on the outside of the explosion-proof shell and the limiting ring on the inside of the junction box can both provide sealing performance, forming two independent sealing barriers. This can effectively prevent external gas, liquid or dust from entering the junction box and causing an explosion, and reduce the risk of fire caused by electrical faults. 2. By setting up an explosion-proof mechanism, compared with the existing technology, multiple first and second reinforcing ribs can increase the strength of the inner side of the explosion-proof shell, and the serrations on the inner side of the two limiting tooth rings can increase the contact area with the outer side of the junction box. In conjunction with multiple first and second reinforcing ribs, under the action of explosive impact or external force, stress can be dispersed, the energy of explosion or external force impact can be absorbed, the risk of cracking of the junction box shell can be reduced, and thus the leakage of explosive energy can be reduced. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the explosion-proof shell of this utility model.

[0014] Figure 3 This is a cross-sectional view of the junction box of this utility model.

[0015] Figure 4 This is a partial structural diagram of the limiting toothed ring connection of this utility model.

[0016] Figure 5 This is a partial structural diagram of the conduit connection of this utility model.

[0017] Figure 6 For the present utility model Figure 3 Enlarged view of the structure of part A in the middle.

[0018] The attached diagram is labeled as follows: 1. Junction box; 2. Cabinet door; 3. Bolt; 4. First sealing strip; 5. Second sealing strip; 6. Conduit; 7. Limiting ring; 8. Threaded ring; 9. Turntable; 10. Slip ring; 11. Pressing ring; 12. Extrusion ring; 13. First sealing ring; 14. Second sealing ring; 15. Limiting toothed ring; 16. Explosion-proof shell; 17. First reinforcing rib; 18. Second reinforcing rib. Detailed Implementation

[0019] 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.

[0020] The embodiments disclosed in this application are as follows: Figure 1-6The explosion-proof junction box housing shown includes a junction box 1, a cabinet door 2 hinged to the front of the junction box 1, a bolt 3 threaded inside the cabinet door 2, the bolt 3 threaded to the front of the junction box 1, a first sealing strip 4 fixedly connected to the top of the cabinet door 2, a second sealing strip 5 installed at the top of the first sealing strip 4, the second sealing strip 5 fixedly connected to the junction box 1, a sealing assembly installed inside the junction box 1, and an explosion-proof mechanism installed on the outside of the junction box 1, including multiple conduits 6, the conduits 6 penetrating the junction box 1, and limit rings 7 at both ends of the conduits 6, the multiple limit rings 7 fixedly connected to the inside of the junction box 1, a threaded ring 8 threaded inside the limit ring 7, a turntable 9 fixedly connected to the top of the threaded ring 8, a sliding ring 10 fixedly connected to the bottom of the threaded ring 8, two downward pressure rings 11 slidably connected to the outside of the sliding ring 10, the downward pressure rings 11 slidably connected to the inside of the limit rings 7, and the bottom of the downward pressure rings 11... A compression ring 12 is fixedly connected, and a first sealing ring 13 is provided on the inner side of the compression ring 12. The outer side of the first sealing ring 13 is adapted to the compression ring 12. A second sealing ring 14 is fixedly connected to the bottom end of the first sealing ring 13. When the threaded ring 8 moves down inside the limiting ring 7 through the thread, it can drive the sliding ring 10 to slide and connect with the inner side of the lower pressure ring 11, and can squeeze the lower pressure ring 11 to move down, so that the lower pressure ring 11 can drive the compression ring 12 to move down inside the limiting ring 7, so that the compression ring 12 can squeeze the first sealing ring 13 and the second sealing ring 14 to fit against the outer side of the wire, thereby providing a double seal inside the limiting ring 7. The limiting ring 7 on the outer side of the explosion-proof shell 16 and the limiting ring 7 on the inner side of the junction box 1 can both provide sealing performance, forming two independent sealing barriers, which can effectively prevent external gas, liquid or dust from entering the junction box and causing an explosion.

[0021] Reference Figure 2 and 4 As shown, the explosion-proof mechanism includes two limiting toothed rings 15, which are fixedly connected to the outside of the junction box 1. An explosion-proof shell 16 is fixedly connected to the outside of the limiting toothed rings 15. Multiple first reinforcing ribs 17 and second reinforcing ribs 18 are fixedly connected inside the explosion-proof shell 16. One end of each of the first reinforcing ribs 17 and second reinforcing ribs 18 is fixedly connected to the outside of the junction box 1. A conduit 6 passes through the inside of the explosion-proof shell 16. The bottom end of the explosion-proof shell 16 is fixedly connected to multiple other limiting rings 7. The multiple first reinforcing ribs 17 and second reinforcing ribs 18 can enhance the structural strength of the explosion-proof shell 16 inside the shell and cooperate with the two limiting toothed rings 15. The multiple serrations on the inside of the limiting toothed rings 15 can increase the contact area with the outside of the junction box 1, thereby dispersing stress and absorbing energy under the impact of an explosion, thus reducing the leakage of explosion energy.

[0022] Working principle of this utility model: This utility model designs an explosion-proof junction box housing, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation of various structures, when wiring is required, the wire is passed through the conduit 6 and extended into the junction box 1. After the wire connection is completed, the turntables 9 at both ends of the conduit 6 are rotated in sequence. The turntables 9 can drive the threaded ring 8 to rotate. The threaded ring 8 can move downward inside the limiting ring 7 through the thread, and is fixedly connected to the lower pressure ring 11 by the slip ring 10. When the threaded ring 8 rotates downward, it can push the two lower pressure rings 11 downward through the slip ring 10. The downward movement of the lower pressure rings 11 can push the compression ring 12 to move. The compression ring 12 can compress the first sealing ring 13 and the second sealing ring 14 downward. The second sealing ring 14 can contract under compression, so that the second sealing ring 14 can fit against the outside of the wire. The inner side is adapted to the first sealing ring 13, so that when the compression ring 12 compresses the first sealing ring 13, the opening on the inner side of the compression ring 12 gradually narrows from bottom to top, so that the first sealing ring 13 can be squeezed and fit against the outer side of the wire, thereby forming a double seal inside the limiting ring 7. By using the rotation of both turntables 9, sealing conditions can be provided on both the outer side of the explosion-proof housing 16 and the inner side of the junction box 1, so as to improve the sealing performance. Multiple first reinforcing ribs 17 and second reinforcing ribs 18 can support the outer side of the explosion-proof housing 16 and increase the internal strength of the explosion-proof housing 16. The inner serrations of the two limiting toothed rings 15 are fixedly connected to the outer side of the junction box 1, which can increase the contact area with the outer side of the junction box 1, thus confining the explosion inside the explosion-proof housing 16 and reducing the risk of the explosion-proof housing 16 breaking.

[0023] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures and will not be described here. In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An explosion-proof junction box housing, comprising a junction box (1), characterized in that: The junction box (1) is hinged to a cabinet door (2) on the front side. The cabinet door (2) is threaded with a bolt (3) inside. The bolt (3) is threaded to the front side of the junction box (1). A first sealing strip (4) is fixedly connected to the top of the cabinet door (2). A second sealing strip (5) is installed on the top of the first sealing strip (4). The second sealing strip (5) is fixedly connected to the junction box (1). A sealing component is installed inside the junction box (1). An explosion-proof mechanism is installed on the outside of the junction box (1). The sealing assembly includes a plurality of conduits (6) that pass through the junction box (1).

2. The explosion-proof junction box housing according to claim 1, characterized in that: Both ends of the conduit (6) are provided with limiting rings (7), and multiple limiting rings (7) are fixedly connected to the inside of the junction box (1).

3. The explosion-proof junction box housing according to claim 2, characterized in that: The limiting ring (7) is internally threaded with a threaded ring (8), and a turntable (9) is fixedly connected to the top of the threaded ring (8).

4. The explosion-proof junction box housing according to claim 3, characterized in that: The bottom end of the threaded ring (8) is fixedly connected to a slip ring (10), and two pressure rings (11) are slidably connected to the outside of the slip ring (10). The pressure rings (11) are slidably connected to the inside of the limiting ring (7).

5. The explosion-proof junction box housing according to claim 4, characterized in that: The bottom end of the pressure ring (11) is fixedly connected to the compression ring (12), and the inner side of the compression ring (12) is provided with a first sealing ring (13). The outer side of the first sealing ring (13) is adapted to the compression ring (12), and the bottom end of the first sealing ring (13) is fixedly connected to a second sealing ring (14).

6. The explosion-proof junction box housing according to claim 1, characterized in that: The explosion-proof mechanism includes two limiting toothed rings (15), which are fixedly connected to the outside of the junction box (1), and an explosion-proof shell (16) is fixedly connected to the outside of the limiting toothed rings (15).

7. The explosion-proof junction box housing according to claim 6, characterized in that: The explosion-proof housing (16) has multiple first reinforcing ribs (17) and second reinforcing ribs (18) fixedly connected inside. One end of each of the first reinforcing ribs (17) and the second reinforcing ribs (18) is fixedly connected to the outside of the junction box (1). The conduit (6) passes through the inside of the explosion-proof housing (16). The bottom end of the explosion-proof housing (16) is fixedly connected to multiple other limiting rings (7).

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