An electric control device master control box for mine explosion-proof and intrinsic safety type air door control

Abstract

The utility model relates to the field of mine control box discloses a kind of explosion-proof and intrinsic safety type air door control electric control device master control box for mining, including box, the cable port is fixedly connected in the box outer wall, the hinged seat is fixedly connected in the box outer wall one side, the inner wall rotation of hinged seat is connected with cover, the inner wall bottom of box is fixedly connected with heat conduction plate and wiring terminal, the upper surface of heat conduction plate is fixedly connected with heat conduction silica gel pad, the upper surface of heat conduction silica gel pad is fixedly connected with electrical element, the lower surface of box is provided with heat dissipation component.In the utility model, the heat generated by electrical element work is transmitted to heat conduction plate through heat conduction silica gel pad, and then the heat is quickly transmitted to heat dissipation fin through heat conduction copper pipe to accelerate the heat exchange between heat and air, while the air flow on the surface of heat dissipation fin is accelerated by fan, the heat is discharged from the box, the working temperature in the box is effectively reduced, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of mine control boxes, and in particular to a main control box for an electrical control device for mine explosion-proof and intrinsically safe air door control. Background Technology

[0002] In the underground coal mine environment, the presence of flammable and explosive substances such as gas and coal dust makes the safe and stable operation of the ventilation system crucial. As a key facility controlling airflow, the precise control and safe interlocking of air doors directly affect mine ventilation efficiency and personnel safety. Traditional manually controlled or simple electrically controlled air doors suffer from problems such as delayed response and unreliable interlocking, which can easily lead to major accidents such as airflow short circuits or even gas explosions. The main control box for the explosion-proof and intrinsically safe electrical control device for mine air doors has emerged to address this need. It is specifically designed for areas in underground coal mines where strict airflow control is required, such as main intake and return airways and connecting roadways between mining areas. Through automated control and dual explosion-proof technology, it ensures reliable operation of air doors in complex environments, becoming a core piece of equipment in modern intelligent ventilation systems for coal mines.

[0003] Existing main control boxes typically employ a structural design that combines an explosion-proof enclosure with intrinsically safe circuitry. The explosion-proof enclosure is welded from high-strength steel plates, possessing explosion-proof performance, capable of withstanding internal explosion pressure, and preventing flame propagation. The intrinsically safe circuitry, by limiting circuit energy, ensures that no sparks or thermal effects sufficient to ignite explosive gases are generated under normal operating and fault conditions.

[0004] However, there are some shortcomings in the existing technology. The heavy and sealed explosion-proof shell, the compact internal layout, and the heat generated by the electronic components lead to serious heat accumulation inside the box. It mainly relies on the natural heat dissipation of the shell, which is inefficient. Especially in high-temperature mine environments or when operating at full load, the internal temperature may be too high, which accelerates the aging of electronic components and reduces the reliability and lifespan of the system. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a main control box for an explosion-proof and intrinsically safe ventilation door control device for mining applications. It aims to improve the problem that the internal temperature of the box may be too high in high-temperature mine environments or when operating at full load, which accelerates the aging of electronic components and reduces the reliability and lifespan of the system.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a main control box for an electrical control device for an explosion-proof and intrinsically safe mine door, comprising a box body, a cable port fixedly connected to the outer wall of the box body, a hinge seat fixedly connected to one side of the outer wall of the box body, a cover plate rotatably connected to the inner wall of the hinge seat, a heat-conducting plate and a wiring terminal fixedly connected to the bottom of the inner wall of the box body, a thermally conductive silicone pad fixedly connected to the upper surface of the heat-conducting plate, an electrical component fixedly connected to the upper surface of the thermally conductive silicone pad, and a heat dissipation assembly provided on the lower surface of the box body;

[0007] The heat dissipation assembly includes heat dissipation fins. The outer wall of the heat dissipation fins is located at the bottom of the housing. A heat-conducting copper pipe is fixedly connected to the inner wall of the heat dissipation fins. The outer wall of the heat-conducting copper pipe is fixedly connected to the inner wall of the heat-conducting plate. A bracket is fixedly connected to the outer wall of the heat dissipation fins. The upper surface of the bracket is fixedly connected to the lower surface of the housing.

[0008] Furthermore, a display screen is fixedly connected to the upper surface of the cover plate, a bolt is threadedly connected to the inner wall of the cover plate, and the outer wall of the bolt is threadedly connected to the inner wall of the box.

[0009] Furthermore, a fixing block 1 is fixedly connected to the upper surface of the terminal block, a spring 1 is fixedly connected to the upper surface of the fixing block 1, and a fixing block 2 is fixedly connected to one end of the spring 1.

[0010] Furthermore, the upper surface of the second fixed block is symmetrically provided with sliders, one of the sliders has a sliding groove fixedly connected to one side of its outer wall, and the other slider has a sliding rod fixedly connected to one side of its outer wall.

[0011] Furthermore, a clamping block is fixedly connected to one side of the outer wall of the slider, and a limiting block is slidably connected to the outer wall of the slider. The limiting block is fixedly connected to the upper surface of the second fixing block.

[0012] Furthermore, the outer wall of the slide rod is slidably connected to the inner wall of the slide groove, a second spring is sleeved on the outside of the slide rod, and a lever is fixedly connected to one end of the slide rod.

[0013] Furthermore, one end of the second spring is fixedly connected to one side of the outer wall of the lever, and the other end of the second spring is fixedly connected to one side of the inner wall of the slide groove.

[0014] Furthermore, a second bracket is fixedly connected to one side of the outer wall of the first bracket, and a fan is provided on the inner wall of the second bracket.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the heat generated by the operation of electrical components is transferred to the heat-conducting plate through the thermally conductive silicone pad, and then the heat is quickly transferred from the inside of the box to the external heat dissipation fins at the bottom of the box through the thermally conductive copper pipe, which accelerates the heat exchange with the air. Then the fan is started, and the fan accelerates the air flow on the surface of the heat dissipation fins to expel the heat from the box, effectively reducing the working temperature inside the box, protecting electronic components, extending the service life of the equipment, improving the operational stability of the system in high-temperature environments, and thus improving the practicality of the device.

[0017] 2. In this utility model, the sliding lever drives the sliding rod to slide, thereby opening the slider and clamping block. After the wire is in place, the lever is released, and the sliding rod is reset by the second spring, so that the clamping block stably holds the wire. The automatic clamping of the wire, combined with the elastic force of the first spring, reduces the problem of loose wiring and poor contact caused by downhole vibration, thereby improving the practicality of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the main control box of the electrical control device for controlling an explosion-proof and intrinsically safe air door in a mine, as proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the main control box of the electrical control device for controlling an explosion-proof and intrinsically safe air door in a mine, as proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the heat dissipation fins of the main control box of the electrical control device for controlling an explosion-proof and intrinsically safe air door in a mine, as proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the heat-conducting copper pipe part of the main control box of the electrical control device for controlling an explosion-proof and intrinsically safe air door in a mine, as proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the clamping block structure of the main control box of the electrical control device for controlling an explosion-proof and intrinsically safe air door in a mine, as proposed in this utility model.

[0023] Legend:

[0024] 1. Cabinet; 2. Cable port; 3. Hinge seat; 4. Cover plate; 5. Display screen; 6. Bolt; 7. Heat-conducting plate; 8. Thermally conductive silicone pad; 9. Electrical components; 10. Thermally conductive copper pipe; 11. Heat dissipation fins; 12. Bracket 1; 13. Bracket 2; 14. Fan; 15. Terminal; 16. Fixing block 1; 17. Spring 1; 18. Fixing block 2; 19. Limiting block; 20. Slider; 21. Clamping block; 22. Slide groove; 23. Slide rod; 24. Toggle lever; 25. Spring 2. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-4This utility model provides an embodiment of a main control box for an explosion-proof and intrinsically safe mine door control electrical control device, comprising a box body 1. The box body 1 provides a protective space for internal electrical components 9, preventing the leakage of internal explosion flames and the intrusion of external flammable and explosive substances, thereby meeting the explosion-proof requirements of underground coal mines, ensuring the safe and stable operation of equipment, and reducing the risk of equipment damage and safety accidents caused by explosions. A cable port 2 is fixedly connected to the outer wall of the box body 1, which is used to realize the wiring connection between the main control box and external sensors and actuators. A hinge seat 3 is fixedly connected to one side of the outer wall of the box body 1, and a cover plate 4 is rotatably connected to the inner wall of the hinge seat 3. The hinge seat 3 is a metal hinge structure, which supports the cover plate 4. The cover plate 4 is designed to be rotatable for easy maintenance. It seals the enclosure 1 to prevent external dust and moisture from entering, thus ensuring the safe operation of the internal electrical components 9 and improving the equipment's reliability in harsh environments. A display screen 5 is fixedly connected to the upper surface of the cover plate 4. Bolts 6 are threadedly connected to the inner wall of the cover plate 4, and their outer threads are connected to the inner wall of the enclosure 1. The bolts 6 securely connect the cover plate 4 to the enclosure 1, ensuring the sealing and reliability of the explosion-proof joint surface, thereby guaranteeing the explosion-proof effect. A heat-conducting plate 7 and a wiring terminal 15 are fixedly connected to the bottom of the inner wall of the enclosure 1. A thermally conductive silicone pad 8 is fixedly connected to the upper surface of the heat-conducting plate 7, filling the gap between the electrical components 9 and the heat-conducting plate 7. To enhance heat conduction efficiency and reduce thermal resistance, heat can be transferred more quickly, improving heat dissipation. An electrical component 9, consisting of a PLC, relay, intrinsically safe power module, etc., is fixedly connected to the upper surface of the thermally conductive silicone pad 8, achieving the effect of damper logic control. This is existing technology and will not be elaborated further here. A heat dissipation assembly is installed on the lower surface of the housing 1, including heat dissipation fins 11. The heat dissipation fins 11 are composed of multiple evenly distributed aluminum plates, used to increase the heat dissipation area and accelerate heat exchange with the air, thereby improving heat dissipation efficiency. The outer wall of the heat dissipation fins 11 is located at the bottom of the housing 1, and a heat-conducting copper pipe 10 is fixedly connected to the inner wall of the heat dissipation fins 11. The outer wall of the heat pipe 10 is fixedly connected to the inner wall of the heat-conducting plate 7. The heat-conducting copper pipe 10 works with the heat-conducting plate 7 to conduct heat, quickly transferring the heat generated by the electrical components 9 to the heat dissipation fins 11, achieving a high-efficiency heat dissipation effect. A bracket 12 is fixedly connected to the outer wall of the heat dissipation fins 11. The upper surface of the bracket 12 is fixedly connected to the lower surface of the housing 1. A bracket 2 13 is fixedly connected to one side of the outer wall of the bracket 12. The bracket 2 13 works with the bracket 12 to fix the fan 14. The fan 14 is installed on the inner wall of the bracket 2 13. The fan 14 is used to accelerate the airflow on the surface of the heat dissipation fins 11, enhance the heat dissipation effect, and thus quickly reduce the temperature when the temperature inside the main control box is too high, ensuring the normal operation of the equipment.

[0027] Reference Figure 5A fixing block 16 is fixedly connected to the upper surface of terminal 15. A spring 17 is fixedly connected to the upper surface of fixing block 16. A fixing block 28 is fixedly connected to one end of spring 17. Spring 17, together with the elastic clamping structure, reliably fixes the wire, thereby reducing loose wiring and poor contact caused by downhole vibration, and ensuring stable signal and power transmission. Slider 20 is symmetrically arranged on the upper surface of fixing block 28. A sliding groove 22 is fixedly connected to one side of the outer wall of one slider 20, and a sliding rod 23 is fixedly connected to one side of the outer wall of the other slider 20. A clamping block 21 is fixedly connected to one side of the outer wall of slider 20. Slider 20, together with sliding rod 23 and lever 24, slides to control the opening and closing of clamping block 21, facilitating wire connection and... The clamping effect is achieved by a limiting block 19 slidingly connected to the outer wall of slider 20. The limiting block 19 is fixedly connected to the upper surface of the fixing block 18. The limiting block 19 is used to limit the displacement of slider 20, ensuring that clamping block 21 is centered and clamps the wire, thereby avoiding poor contact or wire damage caused by clamping offset and improving connection reliability. The outer wall of slider 23 is slidably connected to the inner wall of slide groove 22. Spring 25 is sleeved on the outside of slider 23. A lever 24 is fixedly connected to one end of slider 23. One end of spring 25 is fixedly connected to one side of the outer wall of lever 24, and the other end of spring 25 is fixedly connected to one side of the inner wall of slide groove 22. Spring 25 is used to provide a restoring elastic force for slider 23, so that clamping block 21 automatically clamps after the wire is connected, thereby achieving fast and reliable wiring.

[0028] Working principle: First, the wire connected to the external sensor is connected to the terminal 15 inside the box through the cable port 2. When the wire is inserted into the terminal 15, the sliding lever 24 drives the sliding rod 23 to slide, so that the slider 20 and the clamp 21 open. After the wire is in place, the lever 24 is released, and the sliding rod 23 is reset by the second spring 25, so that the slider 20 drives the clamp 21, so that the clamp 21 stably clamps the wire and realizes the electrical connection. The automatic clamping of the wire, combined with the elastic force of the first spring 17, reduces the problem of loose wiring and poor contact caused by downhole vibration.

[0029] Secondly, when the control box is working, external sensors transmit signals such as the status of the damper and the passage of pedestrians or vehicles to the electrical component 9 via wires. After performing preset logic calculations, the electrical component 9 outputs commands to control the damper actuator and simultaneously sends status data back to the display screen 5 for local display. The heat generated by the operation of the electrical component 9 is transferred to the heat-conducting plate 7 via the thermally conductive silicone pad 8, and then quickly transferred from the inside of the box 1 to the external heat dissipation fins 11 below the box 1 via the thermally conductive copper pipe 10. The heat dissipation fins 11 can increase the heat dissipation area and accelerate the heat exchange with the air. Subsequently, the fan 14 is started, and the fan 14 accelerates the airflow on the surface of the heat dissipation fins 11, expelling the heat from the box 1, effectively reducing the working temperature inside the box, protecting electronic components, extending the service life of the equipment, and improving the operational stability of the system in high-temperature environments.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A main control box for an electrical control device for an explosion-proof and intrinsically safe mine ventilation door, comprising a box body (1), characterized in that: The outer wall of the box (1) is fixedly connected to a cable port (2), and a hinge seat (3) is fixedly connected to one side of the outer wall of the box (1). A cover plate (4) is rotatably connected to the inner wall of the hinge seat (3). A heat-conducting plate (7) and a terminal (15) are fixedly connected to the bottom of the inner wall of the box (1). A thermally conductive silicone pad (8) is fixedly connected to the upper surface of the heat-conducting plate (7). An electrical component (9) is fixedly connected to the upper surface of the thermally conductive silicone pad (8). A heat dissipation assembly is provided on the lower surface of the box (1). The heat dissipation assembly includes heat dissipation fins (11), the outer wall of the heat dissipation fins (11) is located below the box body (1), the inner wall of the heat dissipation fins (11) is fixedly connected to a heat-conducting copper pipe (10), the outer wall of the heat-conducting copper pipe (10) is fixedly connected to the inner wall of the heat-conducting plate (7), the outer wall of the heat dissipation fins (11) is fixedly connected to a bracket (12), and the upper surface of the bracket (12) is fixedly connected to the lower surface of the box body (1).

2. The main control box of the electrical control device for controlling explosion-proof and intrinsically safe air doors in mines according to claim 1, characterized in that: The upper surface of the cover plate (4) is fixedly connected to the display screen (5), the inner wall of the cover plate (4) is threaded with bolts (6), and the outer wall of the bolts (6) is threaded to the inner wall of the box (1).

3. The main control box of the electrical control device for controlling explosion-proof and intrinsically safe air doors in mines according to claim 1, characterized in that: A fixing block (16) is fixedly connected to the upper surface of the terminal (15), a spring (17) is fixedly connected to the upper surface of the fixing block (16), and a fixing block (18) is fixedly connected to one end of the spring (17).

4. The main control box of the electrical control device for controlling an explosion-proof and intrinsically safe mine ventilation door according to claim 3, characterized in that: The upper surface of the fixed block 2 (18) is symmetrically provided with sliders (20), one of the sliders (20) has a groove (22) fixedly connected to one side of its outer wall, and the other slider (20) has a rod (23) fixedly connected to one side of its outer wall.

5. The main control box of the electrical control device for controlling explosion-proof and intrinsically safe air doors in mines according to claim 4, characterized in that: A clamping block (21) is fixedly connected to one side of the outer wall of the slider (20), and a limiting block (19) is slidably connected to the outer wall of the slider (20). The limiting block (19) is fixedly connected to the upper surface of the fixing block two (18).

6. The main control box of the electrical control device for controlling an explosion-proof and intrinsically safe mine ventilation door according to claim 4, characterized in that: The outer wall of the slide rod (23) is slidably connected to the inner wall of the slide groove (22), and a spring (25) is sleeved on the outside of the slide rod (23). A lever (24) is fixedly connected to one end of the slide rod (23).

7. The main control box of the electrical control device for controlling an explosion-proof and intrinsically safe mine ventilation door according to claim 6, characterized in that: One end of the second spring (25) is fixedly connected to one side of the outer wall of the lever (24), and the other end of the second spring (25) is fixedly connected to one side of the inner wall of the groove (22).

8. The main control box of the electrical control device for controlling explosion-proof and intrinsically safe air doors in mines according to claim 1, characterized in that: A second bracket (13) is fixedly connected to one side of the outer wall of the first bracket (12), and a fan (14) is provided on the inner wall of the second bracket (13).

Images