Explosion-proof control box

Abstract

An explosion-proof control box comprises a box body, a round containing groove is formed in the middle of the front side of the box body, a hinge is fixed to the left end of the front side of the box body in a bolting mode, a cover plate consistent with the containing groove in shape is arranged at the top of the containing groove, the cover plate is rotationally installed on the front side of the box body through the hinge, and the side wall of the cover plate and the side wall of the containing groove are arranged at intervals. A mounting groove is formed in the front side of the cover plate, a panel is arranged at the mounting groove, a display screen is arranged at the upper end of the front side of the panel, a plurality of wire inlets and outlets are formed in the bottom of the box body from left to right at intervals, and sealing joints are arranged at the wire inlets and outlets; a control circuit, a heat dissipation assembly and a pressurizing assembly are arranged in an interlayer between the inner box and the outer box, the heat dissipation assembly and the pressurizing assembly are electrically connected with the sealing connector through the control circuit, and an air inlet is formed in one side of the outer box. Inert gas can be continuously filled through the gas inlet connector, positive pressure is kept between the interlayer and the inside, gas is prevented from entering the interlayer and the inside, and safety is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to control box technical field, especially relate to a kind of explosion-proof control box. BACKGROUND

[0002] Control box is a kind of box for installing electrical control components, to avoid the control components arranged inside from being damaged by external impact. The existing control box generally only has protection function, generally, circuit breaker, contactor, magnetic starting device, button and indicator light are arranged inside the control box. When the control box is applied in mining area, dust working condition environment, explosive gas enters the inside of control box through gap, which is very easy to cause explosion.

[0003] In order to avoid the above situation, in actual use, flammable gas or air mixed with flammable and explosive substances may still enter the control box through the small gap of the control box. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of explosion-proof control box to solve the problems existing in the prior art.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] An explosion-proof control box, comprising a box body, a circular accommodating groove is arranged at the middle position of the front side of the box body, a hinge is fixedly connected to the left end of the front side of the box body, a cover plate with the same shape as the accommodating groove is arranged at the top of the accommodating groove, the cover plate is rotatably installed on the front side of the box body through the hinge, the side wall of the cover plate is spaced apart from the side wall of the accommodating groove, an installation groove is arranged on the front side of the cover plate, a panel is arranged at the installation groove, a display screen is arranged on the front side of the panel, a plurality of explosion-proof buttons are arranged at the lower end of the front side of the panel, an instrument power switch is arranged at the lower end of the front side of the cover plate, a plurality of line inlet and outlet ports are arranged at the bottom of the box body from left to right, a sealing joint is arranged at each line inlet and outlet port, a blind baffle is arranged in each sealing joint, a right protruding internal grounding terminal is arranged on the right side of the box body, the box body comprises an inner box and an outer box, the inner box is arranged inside the outer box, a control circuit, a heat dissipation assembly and a pressure charging assembly are arranged in the interlayer between the inner box and the outer box, the heat dissipation assembly and the pressure charging assembly are electrically connected to the sealing joint through the control circuit, an air inlet is arranged on one side of the outer box, and the air inlet is used to charge inert gas.

[0007] By adopting the technical scheme, the pressurizing assembly is mainly used for preventing explosive substances or flammable gas from entering the small gap of the control box, inert gas is continuously filled in the control box, the small playthings are prevented from entering the control box under the condition of internal positive pressure, and heat dissipation becomes a problem under the condition of internal positive pressure, therefore, the heat generated during internal operation needs to be dispersed and resolved through a special heat dissipation assembly, the whole box body can be controlled through the display screen and the explosion-proof key below the display screen, and the instrument power switch is arranged below the panel, so that the whole power of the control box can be turned on or turned off, although there is a gap between the side wall of the cover plate and the side wall of the accommodating groove, the bottom end of the accommodating groove is also provided with a sealing gasket for increasing air tightness, the cover plate is convenient to open, excessive positive pressure gas is prevented from leaking, and flammable and explosive gas and objects are prevented from entering the control box to cause explosion.

[0008] In a further embodiment, the bottom of the box body is symmetrically provided with a first support leg and a second support leg, the first support leg comprises a plurality of first support columns arranged at intervals and a first fixing plate, the plurality of first support columns are arranged at intervals from front to back, the top of the first fixing plate is welded and fixed with the bottoms of the plurality of first support columns, the second support leg comprises a plurality of second support columns arranged at intervals and a second fixing plate, the plurality of second support columns are arranged at intervals from front to back, the top of the second fixing plate is welded and fixed with the bottoms of the plurality of second support columns, and the top of the second fixing plate is provided with an upwardly protruding external grounding end.

[0009] In a further embodiment, the front side bottom end of the first fixing plate is provided with a first through slot from front to back, the front side bottom end of the second fixing plate is provided with a second through slot from front to back, and the first fixing plate and the second fixing plate are identical in structure.

[0010] In a further embodiment, the top front end of the box body is provided with a rain cover extending to the front side, the rain cover comprises a fixed part and an extension part, the bottom of the fixed part is welded and fixed with the box body, the top of the fixed part is provided with the extension part, and the front side of the extension part is provided with an acute angle reverse blunt structure.

[0011] In a further embodiment, the top of the box body is symmetrically provided with a first lifting ring and a second lifting ring.

[0012] In a further embodiment, a plurality of handles are arranged on the cover plate, and the plurality of handles are used for opening the cover plate.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. Through the design of the enclosure and air inlet, inert gas can be continuously supplied from the air inlet between the inner and outer enclosures, including the inner enclosure, maintaining a positive pressure environment inside the enclosure. In addition, many pressure sensors are installed inside the enclosure to determine whether the inert gas is sufficient, preventing flammable and explosive gases or air carrying flammable and explosive dust from entering the control box through small gaps, thereby improving safety and effectively preventing internal explosions.

[0015] 2. By setting up explosion-proof buttons and sealed joints, the explosion-proof buttons can separate the interlayer of the enclosure, that is, the area between the inner and outer enclosures and the external area. This ensures that when the button is pressed, the flow of current will not cause an accidental explosion in the current area, making the working environment of the control box safer.

[0016] 3. The rain cover allows the control box to continue operating in harsh environments, preventing rain and snow from affecting the operation of the explosion-proof buttons and avoiding adverse effects of rain on the internal mechanics, thus improving the safety and stability of the control box during outdoor operation. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of an explosion-proof control box according to this utility model.

[0018] In the diagram: 1. Housing; 2. Hinge; 3. Cover; 4. Panel; 41. Display screen; 42. Explosion-proof button; 5. Instrument power switch; 6. Sealed joint; 7. Internal grounding terminal; 8. Air inlet joint; 9. First support leg; 10. Second support leg; 11. External grounding terminal; 12. Rain cover; 13. First lifting ring; 14. Second lifting ring; 15. Handle. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0021] Example 1:

[0022] like Figure 1 As shown, an explosion-proof control box includes a box body 1. A circular receiving groove is provided in the middle of the front side of the box body 1. A hinge 2 is bolted to the left end of the front side of the box body 1. The box body 1 is made of Q235 steel, 300mm thick, and powder coated. A cover plate 3 with the same shape as the receiving groove is provided on the top of the receiving groove. The cover plate 3 is rotatably installed on the front side of the box body 1 via the hinge 2. The side wall of the cover plate 3 is spaced apart from the side wall of the receiving groove. Multiple handles 15 are provided on the cover plate 3, all of which are used to open the cover plate 3. A mounting groove is provided on the front side of the cover plate 3, and a panel 4 is provided in the mounting groove. A display screen 41 is provided on the upper front side of the panel 4. Multiple explosion-proof buttons 42 are spaced apart on the lower front side of the panel 4. An instrument power switch 5 is provided on the lower front side of the cover plate 3. Multiple inlet and outlet ports are spaced apart from left to right on the bottom of the box body 1. Each inlet and outlet port is provided with a sealing joint 6, and each sealing joint 6 is provided with a blind plug. The right side of the body 1 is provided with an inner grounding terminal 7 protruding to the right. The body 1 includes an inner box and an outer box. The inner box is located inside the outer box. The control circuit, heat dissipation component and pressurization component are provided in the interlayer between the inner box and the outer box. The heat dissipation component and the pressurization component are electrically connected to the sealing joint 6 through the control circuit. An air inlet is provided on one side of the outer box. The air inlet is used to fill in inert gas. The cover plate 3 can be pulled out from the body 1 by the handle 15. Although there is a certain gap between the cover plate 3 and the side wall of the receiving groove, the bottom of the receiving groove is also provided with a sealing gasket to prevent external gas from entering the interior of the control box. In addition to the sealing measures, the body 1 is also provided with an air inlet. Inert gas is continuously filled into the interior by the pressurization component. The heat dissipation component exchanges the heat inside the control box to the outside of the body 1. The blind plug can prevent flammable and explosive gases from entering the body 1 from the pipe interface. The explosion-proof button 42 can further improve the safety effect.

[0023] like Figure 1As shown, the top of the box 1 is provided with a first lifting ring 13 and a second lifting ring 14 symmetrically, the top of the box 1 is provided with a rain cover 12 extending to the front side, the rain cover 12 comprises a fixed part and an extension part, the bottom of the fixed part is welded and fixed with the box 1, the top of the fixed part is provided with the extension part, the front side of the extension part is provided with an acute angle obtuse structure, the lower part of the box 1 is symmetrically provided with a first supporting leg 9 and a second supporting leg 10, the vertical support is also made of Q235 steel and is subjected to surface plastic spraying treatment, the first supporting leg 9 comprises a plurality of first supporting columns and a first fixed plate arranged at intervals, the plurality of first supporting columns are arranged at intervals from front to back, the top of the first fixed plate is welded and fixed with the bottom of the plurality of first supporting columns, the second supporting leg 10 comprises a plurality of second supporting columns and a second fixed plate arranged at intervals, the plurality of second supporting columns are arranged at intervals from front to back, the top of the second fixed plate is welded and fixed with the bottom of the plurality of second supporting columns, the top of the second fixed plate is provided with an upwardly protruding external grounding end 11, through the first lifting ring 13 and the second lifting ring 14, the control box can be hoisted in some unsuitable transportation occasions, and the rain cover 12 can prevent rainwater from eroding the gaps of the box 1 in an outdoor environment, and damaging internal lines and electronic elements, the internal grounding end 7 and the external grounding end 11 can improve the safety of the box 1, and the first supporting leg 9 and the second supporting leg 10 can make the control box more stable as a whole.

[0024] Specific implementation process: after the customer sends the internal instrument, the internal instrument is installed in the box 1 and is connected, the inlet and outlet line port below the box 1 is provided with an explosion-proof cable and a sealing joint 6, and is provided with a corresponding blind plug piece, so as to improve the reliability as much as possible, there are 18 explosion-proof buttons 42 on the panel 4, which are used for controlling the internal instrument sent by the customer, in actual work, the plug piece on the air inlet joint 8 needs to be removed, and the corresponding air supply pipe is connected, and inert gas is continuously filled into the interior, so that the effect of positive pressure explosion-proof is realized.

[0025] In the embodiments disclosed in the utility model, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense. For example, "connection" can be fixed connection, detachable connection or integral connection. "Connection" can be direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the utility model can be understood according to specific conditions.

[0026] The specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. An explosion-proof control box comprising a box body (1), characterized in that: The front side of the box (1) is provided with a circular accommodating groove, the left end of the front side of the box (1) is hingedly fixed with a hinge (2), the top of the accommodating groove is provided with a cover plate (3) which is consistent with the shape of the accommodating groove, the cover plate (3) is rotatably installed on the front side of the box (1) through the hinge (2), the side wall of the cover plate (3) is spaced from the side wall of the accommodating groove, the front side of the cover plate (3) is provided with a mounting groove, the mounting groove is provided with a panel (4), the front side of the panel (4) is provided with a display screen (41) at the upper end, the front side of the panel (4) is provided with a plurality of explosion-proof keys (42) at the lower end, the front side of the cover plate (3) is provided with an instrument power switch (5), the bottom of the box (1) is provided with a plurality of inlet and outlet line openings from left to right, the plurality of inlet and outlet line openings are provided with sealing joints (6), the plurality of sealing joints (6) are provided with blind plugs, the right side of the box (1) is provided with a right protruding inner grounding end (7), the box (1) comprises an inner box and an outer box, the inner box is arranged in the inner box of the outer box, the control circuit, the heat dissipation assembly and the pressure charging assembly are arranged in the interlayer between the inner box and the outer box, the heat dissipation assembly and the pressure charging assembly are electrically connected with the sealing joint (6) through the control circuit, one side of the outer box is provided with an air inlet, and the air inlet is used for filling inert gas.

2. An explosion-proof control box according to claim 1, characterized in that: The box (1) is provided with a first supporting leg (9) and a second supporting leg (10) below the box (1), the first supporting leg (9) comprises a plurality of first supporting columns and a first fixing plate which are spaced apart, the plurality of first supporting columns are spaced apart from front to back, the top of the first fixing plate is welded and fixed with the bottoms of the plurality of first supporting columns, the second supporting leg (10) comprises a plurality of second supporting columns and a second fixing plate which are spaced apart, the plurality of second supporting columns are spaced apart from front to back, and the top of the second fixing plate is welded and fixed with the bottoms of the plurality of second supporting columns. The top of the second fixing plate is provided with an outer grounding end (11) which protrudes upward.

3. An explosion-proof control box according to claim 2, characterised in that: The front side of the first fixing plate is provided with a first through groove from front to back, the front side of the second fixing plate is provided with a second through groove from front to back, and the first fixing plate and the second fixing plate are consistent in structure.

4. The explosion-proof control box of claim 1, wherein: The top front end of the box (1) is provided with a rain cover (12) which extends to the front side, the rain cover (12) comprises a fixed part and an extension part, the bottom of the fixed part is welded and fixed with the box (1), the top of the fixed part is provided with the extension part, and the front side of the extension part is provided with an acute angle reverse blunt structure.

5. An explosion-proof control box according to claim 4, characterised in that: The top of the box (1) is provided with a first lifting ring (13) and a second lifting ring (14) which are symmetrical.

6. An explosion-proof control box according to claim 1, characterized in that: A plurality of handles (15) are arranged on the cover plate (3), and the plurality of handles (15) are used for opening the cover plate (3).

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