A stainless steel explosion-proof box

Abstract

This application discloses a stainless steel explosion-proof box, relating to the field of explosion-proof box technology. The application includes an explosion-proof box body, a cover plate mounted on the upper end of the box body, explosion-proof glands mounted on the side of the box body, and wiring terminals installed inside the box body. Screws are provided at each of the four corners of the upper end of the cover plate, and connecting holes are provided at each of the four corners of the upper end of the cover plate. Threaded holes adapted to the screws are provided at each of the four corners of the upper end of the explosion-proof box body. The screws slide through the connecting holes and extend into the threaded holes to thread into the explosion-proof box body. A first sealing structure is provided between the explosion-proof box body and the cover plate, and a second sealing structure is provided between the screws and the cover plate. The first sealing structure improves the sealing effect between the cover plate and the explosion-proof box body, and the second sealing structure improves the sealing effect between the cover plate and the screws, thus improving the sealing effect of the screw connection and the overall sealing effect of the explosion-proof box.

Description

Technical Field

[0001] This application relates to the field of explosion-proof box technology, and in particular to a stainless steel explosion-proof box. Background Technology

[0002] In flammable and explosive environments, the protection of electrical equipment is of paramount importance. Such environments may contain flammable gases, dust, or vapors, which can easily cause explosions if exposed to electrical sparks or high temperatures. Explosion-proof boxes, as key protective equipment, can isolate electrical components from hazardous environments, ensuring the safe operation of equipment, preventing explosions, and protecting the lives and property of personnel.

[0003] An explosion-proof enclosure is a protective device specifically designed for hazardous environments. Its core function is to prevent external explosions caused by sparks, arcs, or high temperatures generated by internal electrical equipment, thus providing continuous and reliable protection for the electrical equipment.

[0004] The traditional sealing structure between the existing explosion-proof box and the cover is relatively simple, relying on a single sealing gasket or rubber ring. After long-term use, it is prone to aging and deformation, leading to sealing failure. In addition, the cover and the box are usually connected by screws, and the sealing of the screw connection is often neglected. Traditional screw connections rely on simple rubber gaskets, which are prone to uneven pressure during tightening, resulting in poor sealing and allowing water and air to easily seep into the box through these weak points. Utility Model Content

[0005] The purpose of this application is to provide a stainless steel explosion-proof box to solve the problem of insufficient sealing between the cover plate and the box body, as well as insufficient sealing between the screws and the cover plate, which makes it easy for water and air to enter.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A stainless steel explosion-proof box includes an explosion-proof box body, a cover plate installed on the upper end of the explosion-proof box body, explosion-proof glands installed on the side of the explosion-proof box body, and wiring terminals installed inside the explosion-proof box body. Screws are provided at each of the four corners of the upper end of the cover plate, and connecting holes are provided at each of the four corners of the upper end of the cover plate. Threaded holes adapted to the screws are provided at each of the four corners of the upper end of the explosion-proof box body. The screws slide through the connecting holes and extend into the threaded holes to thread into the explosion-proof box body. A first sealing structure is provided between the explosion-proof box body and the cover plate, and a second sealing structure is provided between the screws and the cover plate.

[0008] By adopting the above technical solution, when using the explosion-proof box, the cover plate is connected to the explosion-proof box body so that the connecting holes on the cover plate correspond to the threaded holes on the explosion-proof box body. Then, screws are used to fix it, thus completing the fixation between the cover plate and the explosion-proof box body. The first sealing structure and the second sealing structure can effectively improve the sealing effect of the explosion-proof box and improve the use effect of the explosion-proof box.

[0009] The first sealing structure includes a sealing frame at the lower end of a fixed cover plate, a sealing groove at the upper end of the explosion-proof box body, a sealing sleeve fixed inside the sealing groove, and the sealing frame inserted into the sealing sleeve and fitting against the sealing sleeve.

[0010] By adopting the above technical solution, the first sealing structure can improve the sealing effect between the cover plate and the explosion-proof box body, effectively reducing the ingress of water and air.

[0011] Furthermore, a sealing gasket is fixed to the upper end of the sealing sleeve, the sealing gasket is fixedly connected to the explosion-proof box body, the sealing gasket is in contact with the cover plate, and through holes adapted to screws are opened at the four corners of the sealing gasket.

[0012] By adopting the above technical solution, the sealing gasket can form a seal at the joint between the cover plate and the explosion-proof box body, further improving the sealing effect between the cover plate and the explosion-proof box body.

[0013] Furthermore, the second sealing structure includes support rings fixed at the four corners of the upper end of the cover plate, and a sealing airbag ring is fixed inside the support ring, the sealing airbag ring being in contact with the screw head surface.

[0014] By adopting the above technical solution, the second sealing structure can improve the sealing effect between the screw and the cover plate, and reduce the entry of air or water through the connection hole.

[0015] Furthermore, a sealing ring is fixed to the lower end of the screw head, and the sealing ring is in contact with the sealing airbag ring.

[0016] By adopting the above technical solution, the sealing ring can form a seal at the joint between the screw head and the cover plate, thereby improving the sealing performance between the screw and the cover plate.

[0017] Furthermore, the sealing sleeve is an elastic rubber sleeve, the sealing gasket is an elastic rubber gasket, and the sealing ring is an elastic rubber ring.

[0018] By adopting the above technical solutions, rubber-made seals have good sealing performance and adaptability.

[0019] Furthermore, the explosion-proof enclosure body includes a stainless steel enclosure, and the surface of the stainless steel enclosure is provided with a corrosion-resistant layer, which is an epoxy resin coating layer.

[0020] By adopting the above technical solutions, the anti-corrosion layer can improve the corrosion resistance of the explosion-proof box and expand its application range.

[0021] Furthermore, an antistatic layer is provided on the surface of the corrosion-resistant layer, which is an epoxy conductive paint coating.

[0022] By adopting the above technical solution, the antistatic layer can reduce the static electricity adhering to the explosion-proof box and improve the explosion-proof capability of the explosion-proof box.

[0023] In summary, this application includes at least one of the following beneficial effects:

[0024] 1. In this application, when installing the cover plate, the sealing frame at the lower end of the cover plate is connected to the sealing groove at the upper end of the sealing box, so that the sealing frame is inserted into the sealing sleeve and fits against the sealing sleeve. At this time, the sealing gasket fits against the cover plate. By setting the slotted sealing frame and sealing sleeve and setting the seal at the joint between the cover plate and the explosion-proof box body, the double sealing effect can improve the sealing effect between the cover plate and the explosion-proof box body, effectively reduce the ingress of water or air, and improve the use effect of the explosion-proof box.

[0025] 2. In this application, during the process of connecting and fixing the cover plate and the explosion-proof box body with screws, the screw head will squeeze the sealing airbag ring. After the screw is tightened, the sealing airbag ring will wrap around part of the screw head, and the sealing ring at the lower end of the screw plug will fit against the cover plate. By setting a seal on the surface of the screw head and setting a seal at the joint between the screw head and the cover plate, the double seal can improve the sealing effect between the cover plate and the screw, effectively prevent water or air from entering through the connection hole, improve the sealing effect of the screw connection part, and thus improve the sealing effect of the explosion-proof box. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the explosion-proof box in this application;

[0027] Figure 2 This is a disassembly diagram of the explosion-proof box in this application;

[0028] Figure 3 This is a disassembly diagram of the sealing frame and sealing sleeve in this application;

[0029] Figure 4 This application Figure 2 Enlarged view of point A in the middle;

[0030] Figure 5 This is a partial sectional view of the explosion-proof box body in this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Explosion-proof enclosure body; 101. Stainless steel enclosure; 102. Corrosion-resistant layer; 103. Antistatic layer; 11. Cover plate; 12. Explosion-proof gland; 13. Terminal block; 14. Screw; 15. Connection hole; 16. Threaded hole; 2. First sealing structure; 21. Sealing frame; 22. Sealing groove; 23. Sealing sleeve; 24. Sealing gasket; 25. Through hole; 3. Second sealing structure; 31. Support ring; 32. Sealing airbag ring; 33. Sealing ring. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] This application discloses a stainless steel explosion-proof box.

[0035] Reference Figure 1 and Figure 2 A stainless steel explosion-proof box includes an explosion-proof box body 1, a cover plate 11 installed on the upper end of the explosion-proof box body 1, an explosion-proof gland head 12 installed on the side of the explosion-proof box body 1, a wiring terminal 13 installed inside the explosion-proof box body 1, screws 14 provided at each of the four corners of the upper end of the cover plate 11, connection holes 15 opened at each of the four corners of the upper end of the cover plate 11, and threaded holes 16 adapted to the screws 14 opened at each of the four corners of the upper end of the explosion-proof box body 1. The screws 14 slide through the connection holes 15 and extend into the threaded holes 16 to be threadedly connected to the explosion-proof box body 1. A first sealing structure 2 is provided between the explosion-proof box body 1 and the cover plate 11, and a second sealing structure 3 is provided between the screws 14 and the cover plate 11.

[0036] When using this explosion-proof box, after installing the internal structure, connect the cover plate 11 to the explosion-proof box body 1, so that the four connecting holes 15 on the cover plate 11 correspond to the four threaded holes 16 on the explosion-proof box body 1. Then, pass the screws 14 through the connecting holes 15 so that the screws 14 enter the threaded holes 16 and tighten the screws 14. Install the four screws 14 in sequence to complete the fixation between the cover plate 11 and the explosion-proof box body 1. The explosion-proof gland head 12 can play the role of fastening and sealing the cable, as well as the role of explosion-proof safety protection. The first sealing structure 2 set between the cover plate 11 and the explosion-proof box body 1 can improve the sealing effect between the cover plate 11 and the explosion-proof box body 1. The second sealing structure 3 set between the screws 14 and the cover plate 11 can improve the sealing performance between the screws 14 and the cover plate 11. The first sealing structure 2 and the second sealing structure 3 can effectively improve the sealing effect of the explosion-proof box and improve the use effect of the explosion-proof box.

[0037] Reference Figure 2 and Figure 3The first sealing structure 2 includes a sealing frame 21 at the lower end of the fixed cover plate 11, a sealing groove 22 is provided at the upper end of the explosion-proof box body 1, a sealing sleeve 23 is fixed inside the sealing groove 22, and the sealing frame 21 is inserted into the sealing sleeve 23 and fits against the sealing sleeve 23.

[0038] Among them, the upper end of the sealing sleeve 23 is fixed with a sealing gasket 24, the sealing gasket 24 is fixedly connected to the explosion-proof box body 1, the sealing gasket 24 is in contact with the cover plate 11, and the four corners of the sealing gasket 24 are provided with through holes 25 that are compatible with the screws 14.

[0039] When installing the cover plate 11, the sealing frame 21 at the lower end of the cover plate 11 is connected to the sealing groove 22 at the upper end of the sealing box, so that the sealing frame 21 is inserted into the sealing sleeve 23 and fits against the sealing sleeve 23. At this time, the sealing gasket 24 fits against the cover plate 11. By setting the slotted sealing frame 21 and sealing sleeve 23, the sealing effect between the cover plate 11 and the explosion-proof box body 1 can be improved, effectively reducing the entry of water or air and improving the use effect of the explosion-proof box.

[0040] Reference Figure 2 and Figure 4 The second sealing structure 3 includes support rings 31 fixed at the four corners of the upper end of the cover plate 11. A sealing airbag ring 32 is fixed inside the support ring 31. The sealing airbag ring 32 is in contact with the screw head surface of the screw 14.

[0041] Among them, the lower end of the screw head of the screw 14 is fixed with a sealing ring 33, and the sealing ring 33 is in contact with the sealing airbag ring 32.

[0042] During the process of connecting and fixing the cover plate 11 and the explosion-proof box body 1 with screws 14, the screw head of screw 14 will squeeze the sealing airbag ring 32. After screw 14 is tightened, the sealing airbag ring 32 will wrap around part of the screw head of screw 14, thereby improving the sealing between screw 14 and cover plate 11. The sealing ring 33 at the lower end of the screw 14 plug will fit against cover plate 11. The second sealing structure 3 can effectively prevent water or air from entering through the connection hole 15, improve the sealing effect of the screw 14 connection part, and thus improve the sealing effect of the explosion-proof box.

[0043] Reference Figures 2-4 The sealing sleeve 23 is an elastic rubber sleeve, the sealing gasket 24 is an elastic rubber gasket, and the sealing ring 33 is an elastic rubber ring.

[0044] The sealing sleeve 23, sealing gasket 24, and sealing ring 33, made of elastic rubber, have good sealing ability, thus giving the explosion-proof box good sealing performance.

[0045] Reference Figure 5The explosion-proof enclosure body 1 includes a stainless steel enclosure 101, and the surface of the stainless steel enclosure 101 is provided with a corrosion-resistant layer 102, which is an epoxy resin coating layer.

[0046] Among them, the surface of the corrosion-resistant layer 102 is provided with an antistatic layer 103, which is an epoxy conductive paint coating.

[0047] By coating the explosion-proof enclosure with an epoxy resin coating layer, the corrosion resistance of the enclosure can be improved. The epoxy resin coating layer can effectively resist water, chemicals and atmospheric corrosion, thus making the explosion-proof enclosure suitable for various environments. By coating the explosion-proof enclosure with an epoxy conductive paint coating, the anti-static ability of the enclosure can be improved, making it less likely for static electricity to remain on the surface of the enclosure, thereby improving the explosion-proof capability of the enclosure, and at the same time strengthening the corrosion resistance of the enclosure.

[0048] Working principle: When using this explosion-proof box, after installing the internal structure of the explosion-proof box, connect the cover plate 11 to the explosion-proof box body 1 accordingly. Connect the sealing frame 21 at the lower end of the cover plate 11 to the sealing groove 22 at the upper end of the sealing box, so that the sealing frame 21 is inserted into the sealing sleeve 23 and fits against the sealing sleeve 23. At this time, the sealing gasket 24 fits against the cover plate 11. At this time, the four connecting holes 15 on the cover plate 11 correspond to the four threaded holes 16 on the explosion-proof box body 1. Then, pass the screw 14 through the connecting hole 15 so that the screw 14 enters the threaded hole 16. During the tightening process, the screw head of the screw 14 will squeeze the sealing airbag ring 32. After the screw 14 is tightened, the sealing airbag ring 32 will wrap around part of the screw head of the screw 14, thereby improving the sealing between the screw 14 and the cover plate 11. The sealing ring 33 at the lower end of the screw 14 plug will fit against the cover plate 11, completing the connection between the cover plate 11 and the explosion-proof box body 1.

Claims

1. A stainless steel explosion-proof box, comprising an explosion-proof box body (1), characterized in that: The explosion-proof box body (1) is equipped with a cover plate (11) on the upper end, and an explosion-proof gland head (12) is installed on the side of the explosion-proof box body (1). A wiring terminal (13) is installed inside the explosion-proof box body (1). Screws (14) are provided at the four corners of the upper end of the cover plate (11). Connection holes (15) are opened at the four corners of the upper end of the cover plate (11). Threaded holes (16) that are compatible with the screws (14) are opened at the four corners of the upper end of the explosion-proof box body (1). The screws (14) slide through the connection holes (15). The screws (14) extend into the threaded holes (16) and are threadedly connected to the explosion-proof box body (1). A first sealing structure (2) is provided between the explosion-proof box body (1) and the cover plate (11). A second sealing structure (3) is provided between the screws (14) and the cover plate (11).

2. The stainless steel explosion-proof box according to claim 1, characterized in that: The first sealing structure (2) includes a sealing frame (21) at the lower end of the fixed cover plate (11), and a sealing groove (22) is provided at the upper end of the explosion-proof box body (1). A sealing sleeve (23) is fixed inside the sealing groove (22), and the sealing frame (21) is inserted into the sealing sleeve (23) and fits against the sealing sleeve (23).

3. A stainless steel explosion-proof box according to claim 2, characterized in that: The sealing sleeve (23) is fixed with a sealing gasket (24) at the upper end. The sealing gasket (24) is fixedly connected to the explosion-proof box body (1). The sealing gasket (24) is in contact with the cover plate (11). The four corners of the sealing gasket (24) are provided with through holes (25) that are compatible with the screws (14).

4. A stainless steel explosion-proof box according to claim 3, characterized in that: The second sealing structure (3) includes a support ring (31) fixed at the four corners of the upper end of the cover plate (11). A sealing airbag ring (32) is fixed inside the support ring (31). The sealing airbag ring (32) is in contact with the screw head surface of the screw (14).

5. A stainless steel explosion-proof box according to claim 4, characterized in that: A sealing ring (33) is fixed to the lower end of the screw (14), and the sealing ring (33) is in contact with the sealing airbag ring (32).

6. A stainless steel explosion-proof box according to claim 5, characterized in that: The sealing sleeve (23) is an elastic rubber sleeve, the sealing gasket (24) is an elastic rubber gasket, and the sealing ring (33) is an elastic rubber ring.

7. A stainless steel explosion-proof box according to claim 1, characterized in that: The explosion-proof box body (1) includes a stainless steel box body (101), and a corrosion-resistant layer (102) is provided on the surface of the stainless steel box body (101). The corrosion-resistant layer (102) is an epoxy resin coating layer.

8. A stainless steel explosion-proof box according to claim 7, characterized in that: The surface of the corrosion-resistant layer (102) is provided with an antistatic layer (103), which is an epoxy conductive paint coating.

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