Sealing structure of explosion-proof box

Abstract

The utility model discloses an explosion-proof box sealing structure which comprises a sealing jacket, an explosion-proof machine shell is arranged on the rear side of the sealing jacket, an explosion-proof panel is arranged on the front side of the sealing jacket, the sides, opposite to each other, of the explosion-proof machine shell and the explosion-proof panel are tightly attached to the sealing jacket, an inner cavity of the explosion-proof panel is fixedly connected with an explosion-proof inner shell, and the explosion-proof inner shell is fixedly connected with an outer cavity of the explosion-proof inner shell. A connecting assembly is arranged on the rear side of the explosion-proof inner shell and comprises a rectangular groove formed in the rear side of an inner cavity of the explosion-proof shell. According to the utility model, through the arrangement of the connecting assembly, the explosion-proof inner shell is fixedly mounted, so that the explosion-proof inner shell forms second sealing protection in the inner cavity of the explosion-proof shell, and meanwhile, the explosion-proof shell and the explosion-proof panel are mounted in a sealing manner under the cooperative use of the sealing jacket, the second bolt, the impermeable coating and the sealing coating; therefore, the sealing effect of the inner cavity of the explosion-proof machine shell is guaranteed, and the purposes of high sealing strength and double-layer sealing explosion prevention can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of explosion-proof boxes, in particular to a sealing structure of an explosion-proof box. Background Art

[0002] There are many subdivision names for explosion-proof boxes, generally explosion-proof junction boxes, explosion-proof terminal boxes, explosion-proof distribution boxes, explosion-proof control boxes, explosion-proof distribution cabinets, etc. can all be called explosion-proof boxes. Manufacturers generally determine the product name based on the use environment when classifying.

[0003] The explosion-proof box mainly serves to isolate the contact between external flammable gases and the ignition current generated by the electrical components in the box, thereby playing the role of explosion-proof and flameproof. The explosion-proof box generally uses sealing gaskets to seal the casing components to prevent the entry of flammable gases. However, the sealing effect of a single sealing gasket is limited, and the gasket is easily damaged during the bolt driving process, resulting in unsatisfactory sealing effect. For this reason, it is necessary to provide an explosion-proof box sealing structure, which adopts a method of providing a flameproof inner shell in addition to the casing itself to form a double-channel protection, and at the same time cooperates with the method of sealing rings and sealants to seal the connection positions, thereby further improving the sealing effect inside the casing. Utility Model Content

[0004] The purpose of the utility model is to provide an explosion-proof box sealing structure to solve the above technical problems.

[0005] The utility model provides a technical solution to the above technical problems as follows: an explosion-proof box sealing structure, comprising a sealing jacket: an explosion-proof casing is arranged on the rear side of the sealing jacket, an explosion-proof panel is arranged on the front side of the sealing jacket, the explosion-proof casing and the explosion-proof panel are tightly fitted on the opposite sides of the sealing jacket, the inner cavity of the explosion-proof panel is fixedly connected with a flameproof inner shell, the rear side of the flameproof inner shell is provided with a connecting component, the connecting component comprises a rectangular groove opened on the rear side of the inner cavity of the explosion-proof casing, the rear side of the flameproof inner shell is provided with a rubber sealing pad, the rubber sealing pad is matched with the rectangular groove, a plurality of second bolts are penetrated on the front side of the explosion-proof panel, the front and rear sides of the sealing jacket are filled with an anti-seepage coating all around, and a sealing coating is coated on the back surface of the explosion-proof panel all around.

[0006] Preferably, first bolts are provided through the four corners of the rear side of the explosion-proof casing, and the front ends of the first bolts penetrate into the inner cavity of the explosion-proof casing and penetrate the rubber sealing pad to be threadedly connected with the rear side of the flameproof inner casing.

[0007] Preferably, circular grooves are provided at four corners of the rear side of the explosion-proof housing, a sealing cap is engaged in the inner cavity of the circular groove, and the sealing cap is sleeved on the surface of the first bolt.

[0008] Preferably, the rear end of the second bolt passes through the sealing jacket and the explosion-proof casing in sequence and is threadedly connected with a nut, and a plurality of holes matching the second bolt are provided on both sides of the sealing jacket.

[0009] Preferably, the front side and the rear side of the surface of the second bolt are both sleeved with rubber rings, and the opposite sides of the second bolt and the nut are both fitted with the rubber rings.

[0010] Preferably, the anti-seepage coating and the sealing coating are both weather-resistant silicone sealants.

[0011] 1. The beneficial effect of the utility model is that the utility model fixes and installs the flameproof inner shell by setting the connecting assembly, so that the flameproof inner shell forms a second sealing protection in the inner cavity of the explosion-proof casing. At the same time, with the coordinated use of the sealing jacket, the second bolt, the anti-seepage coating and the sealing coating, the explosion-proof casing and the explosion-proof panel can be sealed and installed, thereby ensuring the sealing effect of the inner cavity of the explosion-proof casing, and achieving the purpose of high sealing strength and double-layer sealing explosion protection.

[0012] 2. The utility model connects and fixes the explosion-proof casing and the explosion-proof inner casing by setting the first bolt, so that the explosion-proof inner casing can be stably installed in the inner cavity of the explosion-proof casing, thereby enabling the explosion-proof inner casing to form a second sealing protection in the inner cavity of the explosion-proof casing.

[0013] 3. The utility model seals the rear side of the first bolt by using the circular groove and the sealing cap in combination, thereby preventing water seepage or air leakage at the first bolt and the circular groove, and ensuring the sealing of the inner cavity of the explosion-proof housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] in:

[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0016] Figure 2 It is a three-dimensional exploded schematic diagram of an embodiment of the utility model;

[0017] Figure 3 This is a rear perspective view of an explosion-proof housing, an explosion-proof panel, an explosion-proof inner housing and a connecting assembly in one embodiment of the utility model;

[0018] Figure 4 A side cross-sectional view of an explosion-proof housing and an explosion-proof panel according to an embodiment of the utility model;

[0019] Figure 5 This is an embodiment of the utility model Figure 4 A partial enlarged view of point A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Sealing jacket, 2. Explosion-proof casing, 3. Explosion-proof panel, 4. Explosion-proof inner casing, 5. Connecting assembly, 51. Rectangular groove, 52. Rubber sealing pad, 53. First bolt, 54. Circular groove, 55. Sealing cap, 6. Second bolt, 7. Nut, 8. Anti-seepage coating, 9. Sealing coating, 10. Rubber ring. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the explosion-proof box sealing structure of the present invention will be described with reference to the accompanying drawings.

[0023] Figure 1-5 The explosion-proof box sealing structure of an embodiment of the utility model is shown, comprising a sealing jacket 1: an explosion-proof casing 2 is arranged on the rear side of the sealing jacket 1, an explosion-proof panel 3 is arranged on the front side of the sealing jacket 1, the explosion-proof casing 2 and the explosion-proof panel 3 are both tightly fitted to the sealing jacket 1 on the opposite sides, the inner cavity of the explosion-proof panel 3 is fixedly connected with a flameproof inner casing 4, the rear side of the flameproof inner casing 4 is provided with a connecting component 5, the connecting component 5 includes a rectangular groove 51 opened on the rear side of the inner cavity of the explosion-proof casing 2, and the rear side of the flameproof inner casing 4 is provided with a rubber seal The rubber sealing pad 52 is matched with the rectangular groove 51. The four corners of the rear side of the explosion-proof housing 2 are penetrated with a first bolt 53. The front end of the first bolt 53 penetrates into the inner cavity of the explosion-proof housing 2 and penetrates the rubber sealing pad 52 to be threadedly connected with the rear side of the flameproof inner housing 4. The four corners of the rear side of the explosion-proof housing 2 are provided with a circular groove 54. The inner cavity of the circular groove 54 is clamped with a sealing cap 55. The sealing cap 55 is sleeved on the surface of the first bolt 53. Through the setting of the first bolt 53, the explosion-proof housing 2 and the flameproof inner housing are sealed. 4 plays a role of connection and fixing, so that the flameproof inner shell 4 can be stably installed in the inner cavity of the explosion-proof casing 2, so that the flameproof inner shell 4 can form a second sealing protection in the inner cavity of the explosion-proof casing 2. The circular groove 54 and the sealing cap 55 are used in combination to seal the rear side of the first bolt 53, thereby preventing water seepage or air leakage at the first bolt 53 and the circular groove 54, and ensuring the sealing of the inner cavity of the explosion-proof casing 2. The front side of the explosion-proof panel 3 is penetrated by a plurality of second bolts 6. The second bolts 6 are The rear end of the bolt 6 passes through the sealing jacket 1 and the explosion-proof casing 2 in sequence and is threadedly connected with a nut 7. A plurality of holes matching the second bolt 6 are provided on both sides of the sealing jacket 1. The front and rear sides of the surface of the second bolt 6 are sleeved with rubber rings 10. The opposite sides of the second bolt 6 and the nut 7 are fitted with the rubber ring 10. The front and rear sides of the sealing jacket 1 are filled with an anti-seepage coating 8. The back surface of the explosion-proof panel 3 is coated with a sealing coating 9. Both the anti-seepage coating 8 and the sealing coating 9 are weather-resistant silicone sealants.

[0024] Working principle: When the utility model is used, the user sets the sealing jacket 1 on the surface of the explosion-proof panel 3, sets the rubber sealing pad 52 on the rear side of the explosion-proof inner shell 4, and applies the sealing coating 9 around the rear side of the explosion-proof panel 3, and then snaps the explosion-proof panel 3 on the front side of the explosion-proof casing 2, so that the explosion-proof inner shell 4 squeezes the rubber sealing pad 52 and snaps into the inner cavity of the rectangular groove 51, and then inserts the first bolt 53 from the inner cavity of the circular groove 54 to the front side and tightens it, so that the first bolt 53 is threadedly connected with the explosion-proof inner shell 4, so that the explosion-proof inner shell 4 is stably installed in the inner cavity of the explosion-proof casing 2 to form a second line of protection, and then adjusts the sealing cap 55. The user then inserts the second bolt 6 from the front side of the explosion-proof panel 3 to the rear side of the explosion-proof casing 2, and rotates the nut 7 on the surface of the second bolt 6, so that the rubber ring 10 is squeezed and deformed. At this time, the sealing jacket 1 is clamped between the explosion-proof casing 2 and the explosion-proof panel 3. Finally, the user applies an anti-seepage coating 8 along the front and rear sides of the sealing jacket 1 to further seal the connection positions of the sealing jacket 1 and the explosion-proof casing 2, and the sealing jacket 1 and the explosion-proof panel 3.

[0025] To sum up: the explosion-proof box sealing structure, through the setting of the connecting component 5, fixes the flameproof inner shell 4, so that the flameproof inner shell 4 forms a second sealing protection in the inner cavity of the explosion-proof casing 2, and at the same time, with the coordinated use of the sealing jacket 1, the second bolt 6, the anti-seepage coating 8 and the sealing coating 9, the explosion-proof casing 2 and the explosion-proof panel 3 are sealed and installed, thereby ensuring the sealing effect of the inner cavity of the explosion-proof casing 2, and achieving the purpose of high sealing strength and double-layer sealing explosion-proof.

Claims

1. An explosion-proof box sealing structure, characterized in that: The invention comprises a sealing jacket (1), wherein an explosion-proof casing (2) is arranged on the rear side of the sealing jacket (1), an explosion-proof panel (3) is arranged on the front side of the sealing jacket (1), the explosion-proof casing (2) and the explosion-proof panel (3) are both tightly fitted to the sealing jacket (1) on opposite sides, the inner cavity of the explosion-proof panel (3) is fixedly connected to a flameproof inner casing (4), the rear side of the flameproof inner casing (4) is provided with a connecting assembly (5), and the connecting assembly (5) comprises an opening A rubber sealing pad (52) is provided on the rear side of the flameproof inner shell (4) in a rectangular groove (51) at the rear side of the inner cavity of the explosion-proof casing (2), and the rubber sealing pad (52) is matched with the rectangular groove (51). A plurality of second bolts (6) are provided through the front side of the explosion-proof panel (3). The front and rear sides of the sealing jacket (1) are filled with an impermeable coating (8) all around, and a sealing coating (9) is applied around the back surface of the explosion-proof panel (3).

2. The explosion-proof box sealing structure according to claim 1, characterized in that: First bolts (53) are provided through the four corners of the rear side of the explosion-proof casing (2), and the front ends of the first bolts (53) penetrate the inner cavity of the explosion-proof casing (2) and penetrate the rubber sealing pad (52) to be threadedly connected with the rear side of the flameproof inner casing (4).

3. The explosion-proof box sealing structure according to claim 2, characterized in that: The four corners of the rear side of the explosion-proof housing (2) are each provided with a circular groove (54), the inner cavity of the circular groove (54) is engaged with a sealing cap (55), and the sealing cap (55) is sleeved on the surface of the first bolt (53).

4. The explosion-proof box sealing structure according to claim 3, characterized in that: The rear end of the second bolt (6) passes through the sealing jacket (1) and the explosion-proof casing (2) in sequence and is threadedly connected with a nut (7). Both sides of the sealing jacket (1) are provided with a plurality of holes that are compatible with the second bolt (6).

5. The explosion-proof box sealing structure according to claim 4, characterized in that: The front and rear sides of the surface of the second bolt (6) are sleeved with rubber rings (10), and the opposite sides of the second bolt (6) and the nut (7) are both in contact with the rubber rings (10).

6. The explosion-proof box sealing structure according to claim 5, characterized in that: The anti-seepage coating (8) and the sealing coating (9) are both weather-resistant silicone sealants.

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