An explosion-proof control box

Abstract

The utility model discloses an anti -explosion control box, including having the box body of opening and the box cover of covering in the box body opening, be equipped with double -walled sealing structure between the box body and box cover, double -walled sealing structure includes the sealing groove of opening in the box body opening end face, the main sealing piece of being located in the sealing groove and the auxiliary sealing ring of being located in the box cover one side to the box body, the main sealing piece is fluorine rubber sealing ring, the auxiliary sealing ring is elastic metal gasket, when the box cover covers, the auxiliary sealing ring tight main sealing piece and embed in sealing groove. The utility model discloses through setting up the double -walled sealing structure of main sealing piece and auxiliary sealing ring, through the auxiliary sealing ring can tight main sealing piece and embed in sealing groove when the box cover covers, form the double -walled sealing effect of elastic tight and physical embedding. The structure has improved the sealing stability between the box body and box cover greatly, effectively delays the decay speed of the sealing performance with the use time, significantly reduces the security risk of the sealing failure.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof control box technology, specifically an explosion-proof control box. Background Technology

[0002] Explosion-proof control boxes are important electrical devices used in flammable and explosive environments. They are mainly used to control, protect, and monitor circuits, and their explosion-proof performance is directly related to the safety of the working environment.

[0003] Existing explosion-proof control boxes mostly rely on a single sealing ring to seal the box body and cover. After long-term use, the sealing ring is prone to aging, leading to a decline in sealing performance and posing a safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide an explosion-proof control box to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof control box, comprising a box body with an opening and a box cover that closes to the opening of the box body, wherein a double sealing structure is provided between the box body and the box cover, the double sealing structure comprising a sealing groove formed on the end face of the opening of the box body, a main sealing element disposed in the sealing groove, and an auxiliary sealing ring disposed on the side of the box cover facing the box body, wherein the main sealing element is a fluororubber sealing ring, and the auxiliary sealing ring is an elastic metal gasket, wherein when the box cover is closed, the auxiliary sealing ring presses against the main sealing element and is embedded in the sealing groove.

[0006] Preferably, the top of the box is fixedly connected to a plurality of fixing posts on the outside of the sealing groove, and the fixing posts are arranged in a ring around the opening of the box, and a fixing threaded hole is provided in the middle of the surface of the fixing posts.

[0007] Preferably, the fixing column and the box body adopt an integral molding structure design.

[0008] Preferably, a connecting plate is fixedly connected to the surface of the box cover at a position opposite to the fixing post. The surface of the connecting plate has a connecting hole that matches the fixing threaded hole, and the connecting hole and the fixing threaded hole are connected by fasteners.

[0009] Preferably, the lid and the connecting plate are designed as a single piece.

[0010] Preferably, the enclosure is made of high-strength cast aluminum alloy, and its outer surface is provided with an electrostatic powder coating. The enclosure cover is provided with an observation window, which is made of explosion-proof tempered glass.

[0011] Preferably, the rear end face of the housing is fixedly connected to the mounting bracket at the upper and lower ends by bolts.

[0012] Beneficial effects

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0014] This invention employs a dual-sealing structure with a main sealing element and an auxiliary sealing ring. The main sealing element uses a fluororubber sealing ring with excellent sealing performance and aging resistance, while the auxiliary sealing ring is made of an elastic metal gasket. When the lid is closed, the auxiliary sealing ring can press against the main sealing element and embed itself into the sealing groove, forming a dual sealing effect of elastic compression and physical fitting. This structure significantly improves the sealing stability between the box body and the lid, effectively slows down the rate of seal performance decay over time, significantly reduces the safety risks caused by seal failure, and is suitable for the stringent long-term explosion-proof requirements of flammable and explosive environments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the box structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the box cover structure of this utility model.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Enclosure; 2. Enclosure cover; 3. Main seal; 4. Auxiliary sealing ring; 5. Mounting bracket; 6. Double sealing structure;

[0020] 11. Sealing groove; 12. Fixing post; 13. Fixing threaded hole; 21. Connecting plate; 22. Connecting hole;

[0021] 23. Observation window; 24. Fastener. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figure 1-3 This is a schematic diagram of the structure of an explosion-proof control box according to a preferred embodiment of the present invention. In this embodiment, an explosion-proof control box includes a box body 1, a box cover 2, a main sealing element 3, an auxiliary sealing ring 4, a mounting bracket 5, and a double sealing structure 6.

[0025] like Figure 1 and Figure 2 As shown, the housing 1 is made of high-strength cast aluminum alloy through integral casting, possessing excellent structural strength and impact resistance. The outer surface of the housing 1 is treated with electrostatic powder coating to form a corrosion-resistant and insulating protective layer. The front end of the housing 1 has an opening, and a ring-shaped sealing groove 11 is machined on the end face of the opening. Multiple fixing posts 12 are fixedly connected to the top of the housing 1 outside the sealing groove 11. The fixing posts 12 are integrally formed with the housing 1 and are evenly arranged in a ring around the opening of the housing. Each fixing post 12 has a fixing threaded hole 13 in the middle.

[0026] In this embodiment, the upper and lower rear ends of the housing 1 are respectively fixedly connected to mounting brackets 5 by bolts, which facilitates the installation and fixing of the control box on the wall or equipment.

[0027] In this embodiment, as Figure 1 and Figure 3 As shown, the cover 2 is also made of high-strength cast aluminum alloy in one piece. A secondary sealing ring 4 is fixedly provided on the side of the cover 2 facing the box body 1. This secondary sealing ring 4 is an elastic metal gasket, preferably made of stainless steel or copper alloy, possessing a certain degree of elasticity and resistance to deformation. A connecting plate 21 is integrally formed at the position opposite to the fixing post 12 on the box body 1 on the surface of the cover 2. A connecting hole 22 is provided on the connecting plate 21. An observation window 23 is also embedded in the cover 2. The observation window 23 is made of explosion-proof tempered glass, used to observe the status of components inside the box without affecting the explosion-proof performance.

[0028] The main sealing element 3 is a fluororubber sealing ring, which has good high temperature resistance, oil resistance, aging resistance and explosion-proof performance, and is set in the sealing groove 11 of the housing 1.

[0029] Assembly and sealing process:

[0030] First, place the main sealing element 3—the fluororubber sealing ring—flat in the sealing groove 11 of the housing 1. Then, align the auxiliary sealing ring 4 on the inner side of the housing cover 2 with the sealing groove 11, and pass the fastener 24 through the connecting hole 22 on the connecting plate 21 and screw it into the fixing threaded hole 13 of the fixing post 12. As the fastener 24 is gradually tightened, the housing cover 2 presses against the housing 1, and the auxiliary sealing ring 4 presses against the main sealing element 3 and partially embeds itself into the sealing groove 11.

[0031] During this process, the elastic metal auxiliary sealing ring 4 undergoes elastic deformation, applying uniform compression force to the internal fluororubber sealing ring to ensure it fully fills the sealing gap. Simultaneously, it forms a tight metal-to-metal contact with the sidewall of the sealing groove 11, constituting a second sealing barrier. Ultimately, this results in a dual-sealing structure 6 combining elastic compression and physical interlocking, greatly improving the reliability and durability of the seal.

[0032] Working principle:

[0033] When operating in flammable and explosive environments, the explosion-proof control box's double-sealing structure 6 effectively prevents external flammable gases or dust from entering the box. Even if the fluororubber main seal 3 shows slight aging after long-term use, the elastic metal auxiliary sealing ring 4 still provides effective sealing protection, significantly delaying the decline in overall sealing performance and offering high safety redundancy. The robust connection between the box body 1 and the cover 2, along with the excellent materials and surface treatment, further ensures the overall structure's explosion resistance, corrosion resistance, and service life.

[0034] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An explosion-proof control box, comprising a box body (1) having an opening and a box cover (2) covering the opening of the box body (1), characterized in that: A double sealing structure (6) is provided between the box body (1) and the box cover (2). The double sealing structure (6) includes a sealing groove (11) opened on the opening end face of the box body (1), a main sealing element (3) provided in the sealing groove (11), and an auxiliary sealing ring (4) provided on the side of the box cover (2) facing the box body (1). The main sealing element (3) is a fluororubber sealing ring, and the auxiliary sealing ring (4) is an elastic metal gasket. When the box cover (2) is closed, the auxiliary sealing ring (4) presses the main sealing element (3) and is embedded in the sealing groove (11).

2. The explosion-proof control box according to claim 1, characterized in that: The top of the box (1) is fixedly connected to a plurality of fixed posts (12) on the outside of the sealing groove (11), and the fixed posts (12) are arranged in a ring around the opening of the box (1), and a fixed threaded hole (13) is provided in the middle of the surface of the fixed post (12).

3. The explosion-proof control box according to claim 2, characterized in that: The fixed column (12) and the box body (1) adopt an integrated molding structure design.

4. The explosion-proof control box according to claim 1, characterized in that: The surface of the box cover (2) is fixedly connected to a connecting plate (21) at a position opposite to the fixing post (12). The surface of the connecting plate (21) is provided with a connecting hole (22) that matches the fixing threaded hole (13), and the connecting hole (22) and the fixing threaded hole (13) are connected by a fastener (24).

5. The explosion-proof control box according to claim 4, characterized in that: The box cover (2) and the connecting plate (21) adopt an integrated molding structure design.

6. The explosion-proof control box according to claim 2, characterized in that: The enclosure (1) is made of high-strength cast aluminum alloy and has an electrostatic powder coating on its outer surface. The enclosure cover (2) is provided with an observation window (23) made of explosion-proof tempered glass.

7. The explosion-proof control box according to claim 6, characterized in that: The rear end face of the box (1) is fixedly connected to the mounting bracket (5) by bolts at the upper and lower ends.

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