Explosion-proof control box

Abstract

The utility model belongs to the technical field of electrical equipment, and particularly relates to an explosion-proof control box, which comprises a box body and a cover plate, a sealing groove is arranged at the edge of one side of the box body, a permanent magnet is fixedly assembled in the sealing groove, a sealing ring correspondingly matched with the sealing groove is fixedly assembled on one side of the cover plate, and the permanent magnet is fixedly assembled in the sealing groove. Metal powder capable of being attracted by the permanent magnet is embedded in the sealing ring, the permanent magnet and the sealing ring are arranged to be of mutually-matched stepped structures, the cover plate further comprises a fixing mechanism used for conducting auxiliary fixing on the cover plate and the box body, the box body is of a multi-layer structure and comprises a high-strength metal layer and a heat-insulation flame-retardant layer from outside to inside, and the high-strength metal layer and the heat-insulation flame-retardant layer are arranged in the box body. According to the explosion-proof control box, the air heat insulation layers are arranged among the multiple layers of structures, through the design of the sealing structure of the explosion-proof control box, gas, liquid or dust is effectively prevented from invading into the box body, the sealing performance of the explosion-proof control box is improved, and the safety of equipment is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, in particular to an explosion-proof control box. Background Art

[0002] Explosion-proof control box is a type of distribution box, which is suitable for power wiring control in flammable and explosive places such as petrochemical equipment, oil platforms, chemical industry, pharmaceutical industry, coal, smelting, shipbuilding, military industry, textile industry, etc. With the rapid development of industries such as petroleum, chemical industry, military industry, engineering, factories, mines, and mining, explosion-proof distribution boxes are more and more widely used in production, warehousing, and rescue, and there are more and more varieties. How to prevent the occurrence of accidental explosions of explosion-proof distribution boxes in explosive gas hazardous places has become a very important issue.

[0003] The existing explosion-proof control box is mainly composed of the following parts: box body, box door, electrical components, control buttons, indicator lights, seals, etc. The working principle is to prevent the occurrence and spread of explosions through a solid shell and sealed structure.

[0004] The explosion-proof control box in the existing technology has the following shortcomings: the grinding robot will generate a large amount of dust during the grinding process, and the traditional explosion-proof control box is difficult to effectively prevent the dust from entering the box, resulting in the electronic components inside the control box being affected by the dust, and the risk of explosion caused by dust accumulation. In addition, the grinding robot will generate vibrations when working, which will loosen the traditional sealing structure and reduce the sealing effect. Therefore, an explosion-proof control box is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the shortcomings of the existing explosion-proof control box and solve the problem that a large amount of dust will be generated during the grinding process of the grinding robot, the traditional explosion-proof control box is difficult to effectively prevent the dust from entering the box, causing the electronic components inside the control box to be affected by the dust, and the risk of explosion caused by dust accumulation. In addition, the grinding robot will generate vibrations when working, which will cause the traditional sealing structure to loosen and reduce the sealing effect. An explosion-proof control box is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the explosion-proof control box described in the utility model includes a box body, a cover plate is provided on one side of the box body through a hinge, an indicator light and a corresponding control switch are installed on the outside of the cover plate, the cover plate and the box body are fixedly assembled by a plurality of fixing bolts, a sealing groove is provided on one side of the box body at its edge, a permanent magnet is fixedly assembled in the sealing groove, a sealing ring corresponding to the sealing groove is fixedly assembled on one side of the cover plate, and metal powder that can be attracted by the permanent magnet is embedded in the sealing ring.

[0007] Preferably, the permanent magnet and the sealing ring are both configured as mutually matching stepped structures.

[0008] Preferably, it includes a fixing mechanism for auxiliary fixing of the cover plate and the box body, the fixing mechanism includes a fixing pin fixedly arranged on one side of the box body, and a fixing plate fixedly arranged on one side of the cover plate, and the fixing plate is provided with a fixing hole corresponding to the fixing pin.

[0009] Preferably, one end of the fixing plate is provided with an arc-shaped groove, and one end of the fixing pin is provided with an arc-shaped chamfer that matches the arc-shaped groove.

[0010] Preferably, an unlocking mechanism is provided on one side of the fixing mechanism, and the unlocking mechanism includes an assembly groove opened on one side of the cover plate, an unlocking block is assembled in the assembly groove through eccentric rotation of the rotating rod, and a control rod is provided on one side of the unlocking block.

[0011] Preferably, a torsion spring is connected between the unlocking block and the assembly groove for maintaining the unlocking block in an initial position where the fixing plate is not unlocked.

[0012] Preferably, the box body adopts a multi-layer structure, which comprises a high-strength metal layer and a heat-insulating and flame-retardant layer from the outside to the inside, and an air insulation layer is provided between the multi-layer structure.

[0013] Beneficial effects of the utility model:

[0014] 1. The design of the explosion-proof control box sealing structure effectively prevents dust from entering the box, prevents the electronic components inside the control box from being affected by dust, and prevents the risk of explosion caused by dust accumulation. The sealing performance of the explosion-proof control box is improved. The design of the permanent magnet and the sealing ring rich in metal powder makes the sealing surface more reliable, effectively preventing the intrusion of gas, liquid or dust, and greatly improving the safety of the equipment.

[0015] 2. Through the cooperation of the fixing mechanism, when the grinding robot generates vibration during operation, it provides additional fixing protection for the cover and the shell while ensuring the sealing effect, thereby improving the structural safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the entire utility model;

[0018] Figure 2 This is a structural cross-sectional view of the utility model when the box body and the cover plate are assembled;

[0019] Figure 3 yes Figure 2 A magnified view of the structure at point A;

[0020] Figure 4 It is a structural cross-sectional view of the multi-layer structure of the box;

[0021] Legend:

[0022] 1. Box body; 101. High-strength metal layer; 102. Thermal insulation and flame-retardant layer; 103. Air insulation layer; 2. Cover plate; 3. Indicator light; 4. Control switch; 5. Fixing bolt; 6. Sealing groove; 7. Permanent magnet; 8. Sealing ring; 9. Fixing mechanism; 901. Fixing pin; 902. Fixing plate; 9021. Fixing hole; 9022. Arc groove; 10. Unlocking mechanism; 1001. Assembly groove; 1002. Turn rod; 1003. Unlocking block; 1004. Control lever; 1005. Torsion spring. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Specific examples are given below.

[0025] See also Figures 1-4, an explosion-proof control box described in the utility model comprises a box body 1, one side of the box body 1 is provided with a cover plate 2 which is rotated by a hinge, the outer side of the cover plate 2 is equipped with an indicator light 3 and a corresponding control switch 4, the cover plate 2 and the box body 1 are fixedly assembled by a number of fixing bolts 5, one side of the box body 1 is provided with a sealing groove 6 at its edge, a permanent magnet 7 is fixedly assembled in the sealing groove 6, and one side of the cover plate 2 is fixedly equipped with a sealing ring 8 which corresponds to the sealing groove 6, and the sealing ring 8 is embedded with metal powder that can be attracted by the permanent magnet 7; the grinding robot will generate a lot of dust during the grinding process. In order to make the explosion-proof control box effectively prevent dust from entering the interior of the box and prevent the electronic components inside the control box from being affected by dust, and the risk of explosion caused by dust accumulation, the sealing of the explosion-proof control box is improved. When the cover plate 2 is buckled with the box body 1, the staff first fixes the two with external fixing bolts 5. At the same time as being fixed, the sealing ring 8 on the cover plate 2 is inserted into the sealing groove 6 on the box body 1. At the same time, since the sealing ring 8 is embedded with metal powder, the magnetic poles of the permanent magnet 7 are all directed upward, which will generate attraction for the metal powder in the sealing ring 8. Under the action of the magnetic force, the sealing ring 8 is pulled into the sealing groove 6 and fits tightly against the inner wall of the sealing groove 6. At this time, the elasticity of the sealing ring 8 enables it to adapt to the shape of the inner wall of the sealing groove 6 and fill any tiny gaps that may exist, thereby forming a more effective seal. If the following situation occurs: the explosion-proof control box is deformed due to external impact, causing the sealing groove 6 to deform and affecting the sealing structure effect, due to the cooperation of the permanent magnet 7 and the sealing ring 8 rich in metal powder, even if the box body 1 or the cover plate 2 is deformed, causing the sealing groove 6 and the sealing ring 8 to deform, the sealing ring 8 can also be deformed by magnetic attraction to fill these gaps, effectively preventing the intrusion of gas, liquid or dust, thereby greatly improving the safety of the equipment.

[0026] Furthermore, the permanent magnet 7 and the sealing ring 8 are both configured as mutually cooperating stepped structures; when the sealing ring 8 and the permanent magnet 7 cooperate to form a sealing surface, since both structures are stepped structures, the area of ​​the sealing surface is greatly increased, further improving the sealing performance.

[0027] Furthermore, it includes a fixing mechanism 9 for auxiliary fixing the cover plate 2 and the box body 1, the fixing mechanism 9 includes a fixing pin 901 fixedly arranged on one side of the box body 1, and a fixing plate 902 fixedly arranged on one side of the cover plate 2, the fixing plate 902 is provided with a fixing hole 9021 corresponding to the fixing pin 901, one end of the fixing plate 902 is provided with an arc-shaped groove 9022, and one end of the fixing pin 901 is provided with an arc-shaped chamfer that matches the arc-shaped groove 9022; the grinding robot will continuously generate large vibrations when working, which will cause the traditional sealing structure to loosen and reduce the sealing Sealing effect, in order to prevent the occurrence of the above problems, when the cover plate 2 is buckled with the box body 1, the cover plate 2 drives the fixing plate 902 to move toward the fixing pin 901, and one end of the fixing pin 901 is abutted against the arc-shaped groove 9022 at one end of the fixing plate 902, so that the fixing plate 902 is tilted. When the cover plate 2 is buckled with the box body 1, the fixing pin 901 just moves to the fixing hole 9021, and the fixing plate 902 loses the support of the fixing pin 901 and rebounds to insert the fixing pin 901 into the fixing hole 9021, thereby auxiliary fixing the cover plate 2 and the box body 1 to prevent the two from separating and affecting the sealing effect of the sealing surface.

[0028] Furthermore, an unlocking mechanism 10 is provided on one side of the fixing mechanism 9, and the unlocking mechanism 10 includes an assembly groove 1001 opened on one side of the cover plate 2, an unlocking block 1003 is assembled in the assembly groove 1001 through eccentric rotation of a rotating rod 1002, and a control rod 1004 is provided on one side of the unlocking block 1003, and a torsion spring 1005 is connected between the unlocking block 1003 and the assembly groove 1001 for maintaining the unlocking block 1003 in an initial position that does not unlock the fixing plate 902; when it is necessary to unlock the fixing mechanism 9 and open the cover plate 2 to When performing maintenance, the staff pulls the control lever 1004, thereby driving the unlocking block 1003 to rotate, and then the unlocking block 1003 abuts against the fixing plate 902 and tilts it up, so that the fixing pin 901 leaves the fixing hole 9021, and the fixing mechanism 9 can be opened. When the fixing mechanism 9 limits and fixes the cover plate 2 and the box body 1, the torsion spring 1005 on the unlocking mechanism 10 causes one side of the control lever 1004 to be tightly against the fixing plate 902 under the action of its torsion, providing downward pressure for the fixing plate 902, thereby also ensuring the stability of the fixing plate 902.

[0029] Furthermore, the box body 1 adopts a multi-layer structure, which comprises a high-strength metal layer 101 and a heat-insulating and flame-retardant layer 102 from the outside to the inside, and an air heat-insulating layer 103 is provided between the multi-layer structure; the outer high-strength metal layer 101 first provides a solid protective barrier, which can withstand certain external impacts and collisions and prevent puncture from external sharp objects, and the inner heat-insulating and flame-retardant layer 102 further prevents the transfer of heat. These materials have a low thermal conductivity coefficient and a high heat capacity, and can absorb and store a certain amount of heat without allowing the heat to be quickly transferred to the internal space of the box body 1. At the same time, the heat-insulating and flame-retardant layer 102 also has It has flame retardant properties and can prevent the spread of flames in the event of an accident, protecting the internal electrical components and control circuits. The air insulation layer 103 forms a thermal resistance area. Air is a poor conductor and has a relatively low thermal conductivity coefficient. When heat tries to pass through the outer high-strength metal layer 101 to the inner insulation and flame retardant layer 102 or from the inner layer to the outside, the air insulation layer 103 can effectively slow down the heat conduction speed. The heat transfer in this area is greatly hindered. When the external temperature is high, the insulation reduces the internal temperature of the box 1, ensuring that the electrical components work at a suitable temperature, extending the service life and enhancing safety.

[0030] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An explosion-proof control box, comprising a box body (1), a cover plate (2) being provided on one side of the box body (1) by means of a hinge, an indicator light (3) and a corresponding control switch (4) being provided on the outer side of the cover plate (2), the cover plate (2) being fixedly assembled with the box body (1) by means of a plurality of fixing bolts (5), and characterized in that: A sealing groove (6) is provided on one side of the box body (1) at its edge, and a permanent magnet (7) is fixedly installed in the sealing groove (6). A sealing ring (8) corresponding to the sealing groove (6) is fixedly installed on one side of the cover plate (2), and metal powder that can be attracted by the permanent magnet (7) is embedded in the sealing ring (8).

2. The explosion-proof control box according to claim 1, characterized in that: The permanent magnet (7) and the sealing ring (8) are both arranged in a stepped structure that cooperates with each other.

3. The explosion-proof control box according to claim 1, characterized in that: The invention comprises a fixing mechanism (9) for auxiliary fixing of the cover plate (2) and the box body (1), wherein the fixing mechanism (9) comprises a fixing pin (901) fixedly arranged on one side of the box body (1), and a fixing plate (902) fixedly arranged on one side of the cover plate (2), wherein the fixing plate (902) is provided with a fixing hole (9021) corresponding to the fixing pin (901).

4. The explosion-proof control box according to claim 3, characterized in that: One end of the fixing plate (902) is provided with an arc-shaped groove (9022), and one end of the fixing pin (901) is provided with an arc-shaped chamfer that matches the arc-shaped groove (9022).

5. The explosion-proof control box according to claim 3, characterized in that: An unlocking mechanism (10) is provided on one side of the fixing mechanism (9), and the unlocking mechanism (10) comprises an assembly groove (1001) provided on one side of the cover plate (2), an unlocking block (1003) being assembled in the assembly groove (1001) through eccentric rotation of a rotating rod (1002), and a control rod (1004) being provided on one side of the unlocking block (1003).

6. The explosion-proof control box according to claim 5, characterized in that: A torsion spring (1005) is connected between the unlocking block (1003) and the assembly groove (1001) for maintaining the unlocking block (1003) at an initial position where the fixing plate (902) is not unlocked.

7. The explosion-proof control box according to claim 1, characterized in that: The box body (1) adopts a multi-layer structure, which comprises a high-strength metal layer (101) and a heat-insulating and flame-retardant layer (102) from the outside to the inside, and an air heat-insulating layer (103) is provided between the multi-layer structure.

Images