Explosion-proof tank

Abstract

The utility model discloses an explosion-proof box, which comprises a shell, a cover plate, a hinge, a support column, a plurality of wire inlet and outlet holes, an external grounding hole and an explosion-proof breather valve mounting hole, the shell is connected with the cover plate through a screw, the support column is internally fixed on the shell, a bolt is arranged on the hinge, one end of the hinge is mounted in the support column through the bolt, and the other end of the hinge is fixed on the cover plate through a screw. Each wire inlet and outlet hole is provided with a three-layer structure including an internal thread, a sealing piece and an external thread, the sealing piece is located between the internal thread and the external thread, the wire inlet and outlet holes are fixed to the outer wall of the shell through the internal thread, the internal thread is used for fixing the cable gland, the external thread is used for being fixed to the shell, and when the external thread is screwed, the sealing piece is evenly compressed to form a tight sealing layer. The sealing problem of the explosion-proof box requiring frequent opening and closing of the wire inlet and outlet hole is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of explosion -proof electrical equipment, concretely is explosion -proof box. BACKGROUND

[0002] In the flammable and explosive environment, the sealing performance is crucial to explosion -proof box as the important device of protecting electrical equipment. The traditional explosion -proof box access line hole usually adopts simple sealing mode, such as rubber washer or sealant etc., these modes are prone to cause the sealing performance to drop when frequently opening and closing, and there is a security risk. Therefore, an access line hole sealing structure that can guarantee sealing performance and facilitate frequent operation is needed, aiming at improving the sealing performance and use convenience of explosion -proof box. CONTENT OF UTILITY MODEL

[0003] The utility model discloses an explosion -proof box, aiming at improving the sealing performance and use convenience of explosion -proof box.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: explosion -proof box, including shell, cover plate, hinge, support column, multiple access line holes, external grounding hole, explosion -proof breather valve mounting hole, the shell with the cover plate is connected through screw, the support column is fixed in the shell, the hinge is equipped with bolt, the hinge one end is installed in the support column through the bolt, the hinge other end is fixed on the cover plate through screw, every access line hole is equipped with internal thread, sealing sheet and external thread three layer structure, the sealing sheet is located between the internal thread, the external thread, the access line hole is fixed on the outer wall of the shell through internal thread. When needing to overhaul explosion -proof box, unscrew the screw, open the cover plate, the cover plate is connected with the hinge, the hinge one end is installed in the support column through the bolt, and the support column is fixed in the shell, so the cover plate will not be placed on the ground randomly after opening, guarantees that the cover plate surface is not scratched, the internal thread is used for fixed gran head, the external thread is used for fixed in the shell, when the external thread is screwed, the sealing sheet is evenly compressed, forms the tight sealing layer, solves the sealing problem of the explosion -proof box that needs to open and close access line hole frequently.

[0005] Preferably, the screw is a drop -resistant screw, which will still be in the hole of the cover plate after unscrewing.

[0006] Preferably, the inlet and outlet holes can be replaced by inlet and outlet holes with the same diameter internal thread and different diameter external thread. The inlet and outlet hole design is flexible, and can be easily replaced by a hole type with the same diameter internal thread and different diameter external thread to perfectly adapt to various specifications of the gland, ensuring that the explosion-proof box can widely meet the connection requirements in different application scenarios, greatly improving its practicality and compatibility. By simply replacing the inlet and outlet holes, different gland sizes can be quickly adapted without the need for additional customization or modification, thereby simplifying the installation process and improving work efficiency.

[0007] Preferably, the sealing piece is made of high-elasticity and corrosion-resistant material to ensure that the hole sealing is leak-free.

[0008] Preferably, the external grounding hole is arranged on the front surface of the shell, facilitating connection with the external grounding system, ensuring safe grounding of the electrical equipment, and effectively preventing static electricity accumulation and lightning hazards.

[0009] Preferably, the explosion-proof breather valve mounting hole is arranged on the shell. The reserved hole is used for mounting an explosion-proof breather valve, which can automatically adjust the pressure in the box to prevent sudden pressure increase due to temperature change or internal failure, ensure the balance of internal and external pressure in the explosion-proof box, and reduce the risk of explosion.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1. When the explosion-proof box needs to be overhauled, the screw is unscrewed, the cover plate is opened, the cover plate is connected with the hinge, one end of the hinge is installed in the support column through the bolt, and the support column is fixed in the shell, so that the cover plate will not be placed on the ground after being opened, and the surface of the cover plate is not scratched.

[0012] 2. The internal thread of the utility model is used for fixing the gland, and the external thread is used for fixing the shell. When the external thread is tightened, the sealing piece is uniformly compressed to form a tight sealing layer, solving the sealing problem of the explosion-proof box which needs to be frequently opened and closed. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a perspective view of the explosion-proof box of the utility model;

[0014] Figure 2 It is a top view of the explosion-proof box of the utility model;

[0015] Figure 3 It is a front view of the explosion-proof box of the utility model;

[0016] Figure 4 It is a perspective view of the inlet and outlet hole of the utility model.

[0017] Figure 5 It is a cross-sectional view of the cover plate of the utility model.

[0018] Figure 6 The utility model discloses a cover plate interior anti-screw structure schematic view.

[0019] In the drawing: shell (1), cover plate (2), hinge (3), support column (4), access hole (5), external grounding hole (6), explosion -proof breather valve mounting hole (7), bolt (31), internal thread (51), sealing sheet (52), external thread (53). DETAILED DESCRIPTION

[0020] Please refer to Figures 1-6 , explosion -proof box, including shell 1, cover plate 2, hinge 3, support column 4, multiple access hole 5, external grounding hole 6, explosion -proof breather valve mounting hole 7, shell 1 is connected with cover plate 2 by screw, support column 4 is fixed in shell 1, hinge 3 is equipped with bolt 31, hinge 3 one end is installed in support column 4 through bolt 31, and hinge 3 other end is fixed on cover plate 2 through screw, every access hole 5 is equipped with internal thread 51, sealing sheet 52 and external thread 53 three layers structure, sealing sheet 52 is located between internal thread 51, external thread 53, and access hole 5 is fixed on the outer wall of shell 1 through internal thread 51. When needing to overhaul explosion -proof box, unscrew, open cover plate 2, cover plate 2 is connected with hinge 3, and hinge 3 one end is installed in support column 4 through bolt 31, and support column 4 is fixed in shell 1, so cover plate 2 will not be placed on the ground after opening, guarantee that the surface of cover plate 2 is not scratched, and internal thread 51 is used to fix the gland, and external thread 53 is used to fix on shell 1, when external thread 53 is screwed, sealing sheet 52 is evenly compressed, forms the tight sealing layer, solves the sealing problem of the explosion -proof box needing to open and close access hole frequently.

[0021] The screw used is anti-screw, and after being unscrewed, still be in the hole of cover plate 2.

[0022] The access hole 5 can be replaced by an access hole with the same diameter internal thread and different diameter external thread. The access hole 5 is designed to be flexible and can be easily replaced by a hole type with the same diameter internal thread and different diameter external thread, so as to perfectly adapt to various specifications of the gland, ensuring that the explosion -proof box can widely meet the connection requirements in different application scenarios, greatly improving the practicability and compatibility. By simply replacing the access hole, different sizes of the gland can be quickly adapted without the need for additional customization or modification, thereby simplifying the installation process and improving work efficiency.

[0023] The sealing sheet 52 is made of high-elasticity and corrosion-resistant material, ensuring that the hole sealing is leakproof.

[0024] The external grounding hole 6 is arranged on the front face of the shell 1, facilitating connection with an external grounding system, ensuring safe grounding of electrical equipment, and effectively preventing static electricity accumulation and lightning hazards.

[0025] An explosion-proof breather valve mounting hole 7 is arranged on the shell 1. A reserved hole position is used for mounting an explosion-proof breather valve, the valve can automatically adjust the pressure in the box, prevent the pressure from suddenly increasing due to temperature change or internal failure, guarantee the pressure balance between inside and outside of the explosion-proof box, and reduce the explosion risk.

[0026] The above describes the present application and its embodiments, which are not restrictive, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the spirit of the present application, without creative design, similar structure and embodiments to the technical solution, which should belong to the protection scope of the present application.

Claims

1. Explosion-proof box, characterized by: The invention comprises a shell (1), a cover plate (2), a hinge (3), a support column (4), a plurality of inlet and outlet holes (5), an external grounding hole (6), and an explosion-proof breathing valve mounting hole (7); the shell (1) and the cover plate (2) are connected by screws; the support column (4) is fixed to the shell (1); a latch (31) is provided on the hinge (3); one end of the hinge (3) is mounted in the support column (4) by the latch (31); the other end of the hinge (3) is fixed to the cover plate (2) by screws; each of the inlet and outlet holes (5) is provided with a three-layer structure of an internal thread (51), a sealing sheet (52), and an external thread (53); the sealing sheet (52) is located between the internal thread (51) and the external thread (53); and the inlet and outlet holes (5) are fixed to the outer wall of the shell (1) by the internal thread (51).

2. The explosion-proof box according to claim 1, characterized in that: The screws used are anti-drop screws, which will remain in the holes of the cover plate (2) after being unscrewed.

3. The explosion-proof box according to claim 1, characterized in that: The inlet and outlet wire holes (5) can be replaced with inlet and outlet wire holes with the same diameter internal threads and different diameter external threads.

4. The explosion-proof box according to claim 1, characterized in that: The sealing sheet (52) is made of a highly elastic and corrosion-resistant material to ensure that the channel is sealed without leakage.

5. The explosion-proof box according to claim 1, characterized in that: The external grounding hole (6) is arranged on the front side of the housing (1).

6. The explosion-proof box according to claim 1, characterized in that: The explosion-proof breathing valve mounting hole (7) is provided on the housing (1).

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