Explosion-proof branch control box convenient to install

Abstract

The utility model discloses an explosion-proof branch control box convenient to install. Belongs to the technical field of explosion-proof branch control boxes. According to the technical key points, the box comprises a box body and a mounting plate for mounting electronic components, a sealing cover is arranged at the opening end of the box body, and a plurality of fixing lugs are arranged on the outer side surface, opposite to the opening end, of the box body; positioning clamping pieces capable of horizontally moving are symmetrically arranged at the near end part of the lower end of the inner wall of the box body, vertical limiting clamping pieces are arranged at the near end part of the upper end of the inner wall of the box body, and the mounting plate is detachably arranged between the positioning clamping pieces and the vertical limiting clamping pieces; the utility model aims to provide the explosion-proof sub-control box which is simple in structure, can adapt to mounting plates with different sizes and is convenient to mount; the device is used for installing electric control elements in multi-dust places.

Description

Technical Field

[0001] The utility model relates to an explosion-proof sub-control box, and more specifically, to an explosion-proof sub-control box which is easy to install. Background Art

[0002] Dust explosion-proof control boxes are primarily used in environments with explosive dust, such as wood, grain storage, feed, plastic, and paper production sites. The air in these locations is often filled with a large amount of flammable and explosive dust. By installing electronic control equipment within the explosion-proof control box, the electronic control equipment is isolated from the dust, achieving explosion-proof effects.

[0003] In the explosion-proof control boxes commonly used on the market, the electronic control equipment is set on the inner wall of the explosion-proof control box through a mounting plate. The inner wall of the existing explosion-proof control box and the mounting plate are usually fixed by screws. The mounting holes are fixed and can only adapt to a single mounting plate size. During installation, it is necessary to align the corresponding mounting holes on the inner wall of the explosion-proof control box and the mounting plate, which is inefficient and difficult to disassemble and assemble. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the above-mentioned prior art and to provide an explosion-proof sub-control box which has a simple structure, can adapt to mounting plates of different sizes and is easy to install.

[0005] The technical solution of the present utility model is achieved as follows: an explosion-proof sub-control box that is easy to install includes a box body and a mounting plate for installing electronic components, a sealing cover is provided at the open end of the box body, and a plurality of fixing ears are provided on the outer side surface of the box body opposite to the open end; horizontally movable positioning clips are symmetrically provided at the proximal end of the lower end of the inner wall of the box body, and a vertical limit clip is provided at the proximal end of the upper end of the inner wall of the box body, and the mounting plate is detachably arranged between the positioning clip and the vertical limit clip.

[0006] In the above-mentioned explosion-proof sub-control box that is easy to install, a circle of rubber strips is provided on the side of the installation plate close to the inner wall of the box, and the thickness of the rubber strips is 4-8mm; a number of heat dissipation holes are provided on the inner wall of the box inside the ring formed by the rubber strips.

[0007] In the above-mentioned explosion-proof sub-control box that is easy to install, the positioning card includes a horizontal long hole arranged near the lower end of the inner wall of the box, and a first sliding seat is provided in the horizontal long hole; a right-angle positioning groove is provided on the first sliding seat located in the box, and the right-angle positioning grooves on the two positioning cards are arranged opposite to each other; the first sliding seat is threadedly connected to a first fastening screw.

[0008] In the above-mentioned explosion-proof sub-control box that is easy to install, a rubber pad with a thickness not less than that of the fixing ear is provided on the outside of the box body located at the horizontal long hole; the first fastening screw is an external six-level screw, and a step hole for installing the first fastening screw is provided in the rubber pad, and the shape of the step hole is adapted to the nut of the first fastening screw; when the first fastening screw is matched with the first sliding seat, the rubber pad blocks the horizontal long hole.

[0009] In the above-mentioned explosion-proof sub-control box that is easy to install, the vertical limit clamp includes two vertical long holes symmetrically arranged at the proximal end of the upper inner wall of the box, and a second sliding seat is provided in the vertical long hole; an L-shaped baffle is provided on the second sliding seat located in the box; the second sliding seat is threadedly connected to a second fastening screw.

[0010] In the above-mentioned explosion-proof sub-control box that is easy to install, the sealing cover includes a cover plate hinged at the open end of the box body; a step convex ring is provided at the open end of the box body, and a flange ring adapted to the step convex ring is provided on the edge of the cover plate; a sealing rubber ring is provided on the inner wall of the cover plate to cooperate with the inner wall of the step convex ring.

[0011] After adopting the above structure, the utility model can realize the installation of installations of different sizes by providing a horizontally adjustable positioning clamp and a vertically adjustable vertical limit clamp for limiting and fixing the mounting plate. In addition, the mounting plate is snap-fitted by the clamp, which can effectively simplify the installation steps, eliminate the need to align the screws with the mounting holes, effectively improve the installation efficiency, and facilitate assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described in detail below with reference to the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the rear view structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 5 It is a structural diagram of the box body of the utility model;

[0018] Figure 6 It is a structural schematic diagram of the mounting plate of the utility model.

[0019] In the figure: 1. Box body; 2. Mounting plate; 3. Sealing cover; 3a. Cover plate; 3b. Step convex ring; 3c. Flanged ring; 3d. Sealing rubber ring; 4. Fixing ear; 5. Positioning clamp; 5a. Horizontal long hole; 5b. First sliding seat; 5c. Right-angle positioning groove; 5d. First fastening screw; 6. Vertical limit clamp; 6a. Vertical long hole; 6b. Second sliding seat; 6c. L-shaped baffle; 6d. Second fastening screw; 7. Rubber strip; 8. Heat dissipation through hole; 9. Rubber pad; 10. Step hole. DETAILED DESCRIPTION

[0020] See Figure 1-6 As shown, the present invention provides an explosion-proof sub-control box that is easy to install, comprising a box body 1 and a mounting plate 2 for mounting electronic components. The open end of the box body 1 is provided with a sealing cover 3, and a plurality of fixing ears 4 are provided on the outer surface of the box body 1 opposite the open end. Horizontally movable positioning clips 5 are symmetrically provided near the lower end of the inner wall of the box body 1, and a vertical limit clip 6 is provided near the upper end of the inner wall of the box body 1. The mounting plate 2 is detachably disposed between the positioning clip 5 and the vertical limit clip 6. Several wiring posts for wiring are provided at the bottom of the box body, and corresponding dustproof structures are provided within the wiring posts. This is common knowledge among those skilled in the art and will not be described in detail here.

[0021] By providing horizontally adjustable positioning clips and vertically adjustable vertical limit clips to limit and fix the mounting plate, it is possible to install installations of different sizes. In addition, the mounting plate is snap-fitted using the clips, which can effectively simplify the installation process, eliminating the need to align screws with mounting holes, effectively improving installation efficiency and facilitating assembly and disassembly.

[0022] In this embodiment, a ring of rubber strips 7 is provided on the side of the mounting plate 2 that faces the inner wall of the housing 1. The rubber strips 7 are 4-8 mm thick. Several heat dissipation holes 8 are provided on the inner wall of the housing 1, within the ring of rubber strips 7. By providing a cushioned space between the mounting plate and the inner wall of the housing, the rubber strips, in combination with the heat dissipation holes, help dissipate heat, ensuring that the internal temperature of the housing does not rise excessively during operation, thereby reducing the risk of fire and explosion of electronically controlled components. Furthermore, this structure prevents dust from entering the housing through the heat dissipation holes from reaching the front of the mounting plate and contacting the electronically controlled components.

[0023] In this embodiment, the positioning fixture 5 preferably includes a horizontal elongated hole 5a disposed proximal to the lower end of the inner wall of the housing 1, with a first sliding seat 5b disposed within the horizontal elongated hole 5a. The first sliding seat 5b, located within the housing 1, is provided with a right-angled positioning groove 5c, with the two right-angled positioning grooves 5c on the positioning fixtures 5 facing each other. The first sliding seat 5b is threadedly connected to a first fastening screw 5d. The right-angled positioning grooves cooperate with both sides of the lower end of the mounting plate to both limit the mounting plate's position and provide support. The first sliding seat utilizes a square, non-rotatable shape to mate with the horizontal elongated hole, preventing the right-angled positioning grooves from shifting during use, which could affect the assembly of the mounting plate.

[0024] In this embodiment, a rubber pad 9, no less thick than the fixing ear 4, is provided on the outside of the housing 1 at the horizontal slot 5a. The first fastening screw 5d is a six-grade external screw, and a stepped hole 10 for mounting the first fastening screw 5d is provided within the rubber pad 9. The stepped hole 10 is shaped to accommodate the nut of the first fastening screw 5d. When the first fastening screw 5d is engaged with the first sliding seat 5b, the rubber pad 9 blocks the horizontal slot 5a. The nut of the first fastening screw is slightly thicker than the height of the stepped hole. By providing the rubber pad to cover the first fastening screw, the nut of the first fastening screw is prevented from contacting and scratching the wall during installation of the housing. Furthermore, by blocking the horizontal slot, dust from the outside air is prevented from entering the housing through the slot and coming into contact with the electronic control components, ensuring explosion-proof performance.

[0025] In this embodiment, the vertical limit clamp 6 includes two vertical elongated holes 6a symmetrically arranged near the upper end of the inner wall of the housing 1. A second sliding seat 6b is positioned within the vertical elongated holes 6a; an L-shaped baffle 6c is positioned on the second sliding seat 6b within the housing 1; and a second fastening screw 6d is threadedly connected to the second sliding seat 6b. Corresponding rubber pads are also positioned within the vertical elongated holes to mate with the second fastening screw, preventing the second fastening screw's nut from contacting and scratching the wall during housing installation. Furthermore, the rubber pads block the vertical elongated holes, preventing dust from entering the housing through the vertical elongated holes and coming into contact with the electronic control components, thereby ensuring explosion-proof functionality.

[0026] In this embodiment, the sealing cover 3 comprises a cover plate 3a hingedly connected to the open end of the housing 1; a stepped raised ring 3b is provided at the open end of the housing 1, and a flanged ring 3c is provided on the edge of the cover plate 3a to accommodate the stepped raised ring 3b; and a sealing rubber ring 3d is provided on the inner wall of the cover plate 3a to mate with the inner wall of the stepped raised ring 3b. The flanged ring and the stepped raised ring cooperate to provide a primary seal, while the sealing rubber ring and the inner wall of the stepped raised ring cooperate to provide a secondary seal, effectively preventing external dust from entering the housing and coming into contact with the electronic control components. Corresponding screw holes are provided on the cover plate and the housing open end for locking and sealing, a common technique in the art and will not be elaborated upon here.

[0027] To operate, first place the mounting plate with the electronic control components inside the box. Adjust the two right-angle positioning slots to mate with the bottom of the mounting plate and secure with the first screw. Adjust the L-shaped baffle to mate with the top of the mounting plate and secure with the second screw. Once the mounting plate is fixed, feed the wires through the wiring column into the box and connect them to the electronic control components to complete the wiring. Then close the cover, tighten it to the box opening with screws, and mount the box to the appropriate wall or equipment housing using the fixing ears.

[0028] The above embodiments are preferred implementation methods of the present invention and are only used to facilitate the explanation of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the technical field can, without departing from the scope of the technical features of the present invention, make partial changes or modifications to the technical contents disclosed in the present invention and make equivalent embodiments without departing from the technical features of the present invention. These modifications still fall within the scope of the technical features of the present invention.

Claims

1. An explosion-proof sub-control box that is easy to install, comprising a box body (1) and a mounting plate (2) for mounting electronic components, characterized in that: The box body (1) is provided with a sealing cover (3) at the open end, and a plurality of fixing ears (4) are provided on the outer surface of the box body (1) opposite to the open end; a horizontally movable positioning clamp (5) is symmetrically provided at the proximal end of the lower end of the inner wall of the box body (1), and a vertical limit clamp (6) is provided at the proximal end of the upper end of the inner wall of the box body (1); the mounting plate (2) is detachably arranged between the positioning clamp (5) and the vertical limit clamp (6).

2. The explosion-proof sub-control box that is easy to install according to claim 1 is characterized in that: A circle of rubber strips (7) is provided on one surface of the mounting plate (2) close to the inner wall of the box body (1), and the thickness of the rubber strips (7) is 4-8 mm; a plurality of heat dissipation holes (8) are provided on the inner wall of the box body (1) located inside the ring formed by the rubber strips (7).

3. The explosion-proof sub-control box that is easy to install according to claim 1 is characterized in that: The positioning clamp (5) comprises a horizontal long hole (5a) arranged at the proximal end of the lower end of the inner wall of the box body (1), and a first sliding seat (5b) is provided in the horizontal long hole (5a); a right-angle positioning groove (5c) is provided on the first sliding seat (5b) located in the box body (1), and the right-angle positioning grooves (5c) on the two positioning clamps (5) are arranged opposite to each other; the first sliding seat (5b) is connected to a first fastening screw (5d) through a thread.

4. The explosion-proof sub-control box that is easy to install according to claim 3 is characterized in that: A rubber pad (9) having a thickness not less than that of the fixing ear (4) is provided on the outside of the box body (1) at the horizontal long hole (5a); the first fastening screw (5d) is an external six-level screw, and a stepped hole (10) for installing the first fastening screw (5d) is provided in the rubber pad (9), and the shape of the stepped hole (10) is adapted to the nut of the first fastening screw (5d); When the first fastening screw (5d) is engaged with the first sliding seat (5b), the rubber pad (9) blocks the horizontal long hole (5a).

5. The explosion-proof sub-control box that is easy to install according to claim 1 is characterized in that: The vertical limit clamp (6) comprises two vertical long holes (6a) symmetrically arranged at the proximal end of the upper end of the inner wall of the box body (1); a second sliding seat (6b) is provided in the vertical long hole (6a); an L-shaped baffle (6c) is provided on the second sliding seat (6b) located in the box body (1); and the second sliding seat (6b) is connected to a second fastening screw (6d) through a thread.

6. The explosion-proof sub-control box that is easy to install according to claim 1 is characterized in that: The sealing cover (3) comprises a cover plate (3a) hinged to the open end of the box body (1); a stepped protruding ring (3b) is provided at the open end of the box body (1); a flanged ring (3c) adapted to the stepped protruding ring (3b) is provided at the edge of the cover plate (3a); and a sealing rubber ring (3d) adapted to the inner wall of the stepped protruding ring (3b) is provided on the inner wall of the cover plate (3a).

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