Explosion-proof structure of small mining equipment

Abstract

The utility model discloses an explosion-proof structure of small-sized mining equipment, which comprises an explosion-proof shell and a cover body fixed with the explosion-proof shell, and an explosion-proof surface is arranged at the tail end of the explosion-proof shell; a sealing surface is arranged at the tail end of the explosion-proof shell; a sealing gasket is placed on the sealing face, the cover body is provided with a protruding cover body explosion-proof face, and the cover body explosion-proof face is inserted into the explosion-proof face to form an explosion-proof combination face. The utility model has the beneficial effects that (1) the technical requirements of intrinsic safety type equipment of G1.23836.2-2021 and G1.23836.1-2021 can be met, and the intrinsic safety type equipment can be safely used in an underground coal mine; 2, a small-size explosive-proof product can be made; 3) the sealing problem of the explosion-proof product is solved, and the protection grade can reach IP68; 4) an explosion-proof type design is adopted, so that an explosion-proof junction box is not required to be used for wiring; and (5) when an intrinsic safety loop is needed, an explosion-proof and intrinsic safety type can be designed.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof structures, in particular to an explosion-proof structure for small-sized mining equipment. Background Art

[0002] Among the explosion-proof types of explosion-proof equipment used in coal mines, the main explosion-proof types are flameproof, intrinsically safe, and cast-in-place. The characteristic of intrinsically safe explosion-proof equipment is that the current and voltage are controlled to prevent ignition of flammable gases in the environment, and intrinsically safe equipment can only be associated with intrinsically safe equipment. Although it can be designed in a small volume, it is limited by current and voltage in actual use, and many devices cannot be used in conjunction; for cast-in-place products, all parts inside the shell must be cast-in-place with glue, and a certain length of cable must be reserved after casting for on-site wiring. When wiring on-site, it is still necessary to use a flameproof junction box for electrical connection. Because flameproof products require the width and gap of the flameproof surface to match, the traditional design method generally designs a relatively large and bulky volume, and because of the requirements for the roughness of the flameproof surface, there are generally problems with sealing, and generally only IP54 can be achieved. Summary of the invention

[0003] The utility model aims to provide a flameproof structure for small mining equipment to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A flameproof structure for small mining equipment comprises a flameproof shell and a cover body fixed thereto, wherein a flameproof surface is provided at the end of the flameproof shell;

[0006] A sealing surface is provided at the end of the flameproof housing;

[0007] A sealing gasket is placed on the sealing surface, and the cover body is provided with a raised cover body explosion-proof surface, and the cover body explosion-proof surface is inserted into the explosion-proof surface to form a explosion-proof joint surface.

[0008] Furthermore, the exterior and interior of the flameproof casing are both octagonal.

[0009] Furthermore, the explosion-proof surface is annular.

[0010] Furthermore, the sealing surface is provided with a threaded blind hole, and the cover body is connected to the threaded blind hole by bolts.

[0011] Furthermore, the sealing gasket is ring-shaped.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1) It can meet the technical requirements of intrinsically safe equipment of G1.23836.2-2021 and G1.23836.1-2021, and can be used safely in coal mines;

[0014] 2. It can be made into small-volume explosion-proof products;

[0015] 3) Solve the sealing problem of explosion-proof products, and the protection level can reach IP68;

[0016] 4) With flameproof design, no need to use flameproof junction box for wiring;

[0017] 5) When an intrinsically safe circuit is required, it can also be designed as a flameproof and intrinsically safe type. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Example 1, please refer to Figure 1-2 , the utility model provides a technical solution:

[0022] A flameproof structure of a small mining equipment comprises a flameproof shell 1 and a cover 2 fixed thereto by bolts, wherein a flameproof surface 1.2 is arranged at the end of the flameproof shell 1 for explosion prevention;

[0023] A sealing surface 1.1 is provided at the end of the flameproof housing 1 to ensure sealing;

[0024] A sealing gasket 3 is placed on the sealing surface 1.1, and a raised cover flameproof surface 2.1 is provided on the cover 2, so that the cover flameproof surface 2.1 is inserted into the flameproof surface 1.2 to form a flameproof joint surface 3.1.

[0025] like Figure 1 As shown: the flameproof housing 1 is octagonal both on the outside and inside, which meets the space requirements of most circuits.

[0026] like Figure 1 As shown: the flameproof surface 1.2 is annular, in order to facilitate measurement and ensure the flameproof gap in processing and manufacturing.

[0027] like Figure 1 As shown: the sealing surface 1.1 is provided with a threaded blind hole, and the cover body 2 is connected to the threaded blind hole by bolts.

[0028] like Figure 2 As shown: the sealing gasket 3 is annular.

[0029] How it works:

[0030] An electronic circuit board can be placed in the flameproof shell 1. The exterior and interior of the shell are designed to be square, which meets the space requirements of most circuits. A flameproof surface 1.2 is set at the end of the flameproof shell 1. The width of the flameproof surface 1.2 is determined according to the provisions of GB3836 / T-2021. In order to facilitate measurement and ensure the flameproof gap in processing and manufacturing, the flameproof surface is designed to be annular; threaded blind holes are designed at the four corners of the sealing surface 1.1, and the sealing gasket 3 is placed on the flameproof surface 1.2 of the flameproof shell 1.

[0031] After the cover body 2 and the flameproof housing 1 are assembled and fixed with fasteners, the cover body 2 is provided with a cover body flameproof surface 2.1, which forms a flameproof joint surface 3.1 with the flameproof surface 1.2 of the flameproof housing 1.

[0032] Due to the improvement of modern CNC machining technology, it is easy to ensure the parameter value of the gap of the flameproof joint surface 3.1. Under the protection of the sealing surface 1.1 and the sealing gasket 3, the flameproof surface 1.2 is not damaged by external forces, which can more effectively and longer guarantee the flameproof performance of the product, and also play a better sealing role. Make the product work normally in the harsh environment underground.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flameproof structure for small mining equipment, comprising a flameproof housing (1) and a cover (2) fixed thereto, characterized in that: The end of the flameproof housing (1) is provided with a flameproof surface (1.2); A sealing surface (1.1) is provided at the end of the flameproof housing (1); A sealing gasket (3) is placed on the sealing surface (1.1), and the cover body (2) is provided with a raised cover body flameproof surface (2.1), and the cover body flameproof surface (2.1) is inserted into the flameproof surface (1.2) to form a flameproof joint surface (3.1).

2. The explosion-proof structure of a small mining equipment according to claim 1 is characterized in that: The flameproof casing (1) is octagonal both on the outside and inside.

3. The explosion-proof structure of a small mining equipment according to claim 1 is characterized in that: The flameproof surface (1.2) is annular.

4. The explosion-proof structure of a small mining equipment according to claim 1 is characterized in that: The sealing surface (1.1) is provided with a threaded blind hole, and the cover body (2) is connected to the threaded blind hole via bolts.

5. The explosion-proof structure of a small mining equipment according to claim 3 is characterized in that: The sealing gasket (3) is annular.

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