CN-122002772-A - Mining flameproof and intrinsically safe programmable control box

CN122002772ACN 122002772 ACN122002772 ACN 122002772ACN-122002772-A

Abstract

The invention belongs to the technical field of control boxes, in particular to a mining flameproof and intrinsically safe programmable control box which comprises a flameproof box body, an intrinsically safe control center and an auxiliary component, wherein the intrinsically safe control center is arranged inside the flameproof box body and is in control connection with surrounding mining electric equipment through a joint at the top, the auxiliary component comprises an operation button, a display interface and a cooling component, and the flameproof box body disclosed by the invention is in direct communication with the external environment, and timely transmits heat generated by an internal electronic control component to the external environment through the side wall of the flameproof box body and a cooling plate in a manner of mutually matching external cooling air flow and internal circulating air flow, so that the heat dissipation efficiency of the flameproof box body is improved, and the normal operation of the intrinsically safe control center inside the flameproof box body is ensured.

Inventors

Na Yanwu
WANG FEIQI
LIU WENKE
DU ZHENGWEI
WANG QIANG
LI YIFENG
ZHAO KUN
Bao Penglei
ZHANG RUIJIE
Liang Zezheng

Assignees

山西新长防矿用防爆电器有限公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (9)

1. The utility model provides a mining flameproof and intrinsically safe type programmable control box, includes flameproof box (1), intrinsically safe type control center and auxiliary assembly, and the intrinsically safe type control center is arranged inside flameproof box (1), carries out control connection with mining power equipment around through the joint at top, and auxiliary assembly includes operating button, display interface and cooling module, all arranges on flameproof box (1), its characterized in that: The cooling device comprises an explosion-proof box body (1), wherein a cooling plate (11) is uniformly arranged on the outer surface of the back surface of the explosion-proof box body (1), a cooling box (2) in a cooling assembly is arranged on the outer side of the cooling plate (11) and fixedly connected with the explosion-proof box body (1), an air inlet pipeline (21) is arranged at the bottom of the cooling box (2), an air outlet pipeline (22) is arranged at the top of the cooling box, a dustproof layer (23) is arranged inside the air inlet pipeline (21), an explosion-proof cooling fan (211) is also arranged inside the air inlet pipeline (21), and an internal circulating fan is arranged inside the explosion-proof box body (1) and used for driving air in the internal area of the explosion-proof box body (1) to pass through the position, close to the cooling plate (11), of the explosion-proof box body (1) and circulate.
2. The mining flameproof and intrinsically safe programmable control box of claim 1, wherein the mounting plate (12) is arranged on the inner wall of the flameproof box body (1), the mounting plate (12) is positioned close to the cooling plate (11), the circulating pipe (13) is uniformly arranged inside the mounting plate (12), the top of the circulating pipe (13) is communicated with the top area inside the flameproof box body (1), the bottom is communicated with the bottom area inside the flameproof box body (1), and the internal circulating fan is arranged inside the circulating pipe (13).
3. The mining flameproof and intrinsically safe programmable control box of claim 1, wherein the air inlet pipeline (21) and the air outlet pipeline (22) are L-shaped, the horizontal parts of the air inlet pipeline (21) and the air outlet pipeline (22) are communicated with the outside, and the vertical parts are communicated with the inside of the cooling box (2).
4. The mining flameproof and intrinsically safe programmable control box of claim 3, wherein the inner walls of the air inlet pipeline (21) and the air outlet pipeline (22) are provided with explosion venting parts (24) at the joint between the vertical part and the horizontal part, and the thickness and the strength of the explosion venting parts (24) are smaller than those of the other parts of the air inlet pipeline (21) and the air outlet pipeline (22).
5. The mining flameproof and intrinsically safe programmable control box of claim 1, wherein the dustproof layer (23) is positioned on the inner wall of the vertical part of the air inlet pipeline (21), and the dustproof layer (23) comprises a double-layer limiting net (231) and a middle purifying filter cloth (232); The water mist humidifying device comprises a water mist supplying system, a water mist supplying system and a water mist supplying system, wherein a fixing frame (233) is arranged on the outer side of a limiting net (231), the fixing frame (233) is connected with a limiting groove (212) formed in the inner wall of an air inlet pipeline (21) in a sliding mode, a humidifying cavity (234) is formed in the fixing frame (233), the humidifying cavity (234) is communicated with the water mist supplying system on the outer side through a flow guide pipe, and humidifying holes (235) are formed in positions, between the upper side limiting net and the lower side limiting net (231), of the inner wall of the fixing frame (233) in a pointing mode.
6. The mining explosion-proof and intrinsically safe programmable control box of claim 5, wherein the cross section of the limiting net (231) is continuous W-shaped, a propulsion device (236) is arranged at a position, corresponding to the fixed frame (233), on the air inlet pipeline (21), and the output end of the propulsion device (236) is connected with the fixed frame (233) so as to drive the limiting net (231) to reciprocate in the limiting groove (212) along the horizontal direction.
7. The mining flameproof and intrinsically safe programmable control box of claim 6, wherein the inner wall of the horizontal part of the air inlet pipeline (21) is provided with a drain hole (213) at the position opposite to the dust-proof layer (23).
8. The mining explosion-proof and intrinsically safe programmable control box of claim 7, wherein the lower surface of the purification filter cloth (232) is uniformly provided with water absorbing sheets (238), the water absorbing sheets (238) are made of sponge materials, and the water absorbing sheets (238) are positioned in a contact gap between the purification filter cloth (232) and the upper surface of the limiting net (231) at the lower side.
9. The mining explosion-proof and intrinsically safe programmable control box of claim 8, wherein the lower surface of the upper limiting net (231) is provided with a squeeze plate (237) close to the water absorbing sheet (238), one end of the squeeze plate (237) is elastically connected with the lower surface of the limiting net (231), and the other end of the squeeze plate is contacted with the upper surface of the purifying filter cloth (232).

Description

Mining flameproof and intrinsically safe programmable control box Technical Field The invention belongs to the technical field of control boxes, and particularly relates to a mining flameproof and intrinsically safe programmable control box. Background The explosion-proof and intrinsically safe programmable control box (hereinafter referred to as a control box) is a core automatic control device in explosive environments such as underground coal mines, has the low-risk design of explosion-proof protection and intrinsically safe circuits of explosion-proof shells, can stably operate in the scene of explosive mixtures containing methane, coal dust and the like, is widely applied to start-stop control, parameter monitoring and logic linkage of underground conveyors, water pumps, fans, mining equipment and the like, and is a key device for guaranteeing safe and reliable operation of an automatic coal mine system. The temperature of the internal environment is increased due to the fact that the generated heat is continuously accumulated in the control box when the related control box continuously runs due to high production requirements under the mine, meanwhile, the internal heat is difficult to timely export due to the fact that the control box is matched with the sealed safe environment which is arranged based on the safety explosion-proof performance consideration, the working strength of an internal electric control component needs to be reduced when the temperature is too high, cooling is achieved, and the working efficiency of automatic mining under the mine is affected due to the cooling operation. Disclosure of Invention The invention provides a mining flameproof and intrinsically safe programmable control box, which aims to overcome the defects of the prior art and solve the technical problems. The invention provides a mining flameproof and intrinsically safe programmable control box which comprises a flameproof box body, an intrinsically safe control center and an auxiliary component, wherein the intrinsically safe control center is arranged in the flameproof box body and is in control connection with surrounding mining power equipment through a joint at the top; The cooling box in the cooling assembly is arranged outside the cooling plate and fixedly connected with the flameproof box, an air inlet pipeline is arranged at the bottom of the cooling box, an air outlet pipeline is arranged at the top of the cooling box, a dust-proof layer is arranged inside the air inlet pipeline, a flameproof cooling fan is also arranged inside the air inlet pipeline, and an internal circulating fan is arranged inside the flameproof box and used for driving air in an internal region of the flameproof box to pass through a part of the flameproof box, which is close to the cooling plate, and circulate. Preferably, the inner wall of the flameproof box body is provided with a mounting plate, the mounting plate is positioned close to the cooling plate, a circulating pipe is uniformly arranged in the mounting plate, the top of the circulating pipe is communicated with the top area in the flameproof box body, the bottom of the circulating pipe is communicated with the bottom area in the flameproof box body, and an internal circulating fan is arranged in the circulating pipe. Preferably, the air inlet pipeline and the air outlet pipeline are L-shaped, the horizontal parts of the air inlet pipeline and the air outlet pipeline are communicated with the outside, and the vertical parts of the air inlet pipeline and the air outlet pipeline are communicated with the inside of the cooling box. Preferably, the inner walls of the air inlet pipeline and the air outlet pipeline are provided with explosion venting parts at the joint between the vertical part and the horizontal part, and the thickness and the strength of the explosion venting parts are smaller than those of the other parts of the air inlet pipeline and the air outlet pipeline. Preferably, the dust-proof layer is positioned on the inner wall of the vertical part of the air inlet pipeline, and comprises a double-layer limiting net and middle purifying filter cloth; The humidifying cavity is arranged in the fixing frame and communicated with a water mist supply system on the outer side through a flow guide pipe, and humidifying holes are formed in the positions, which point to gaps between the upper limiting net and the lower limiting net, of the inner wall of the fixing frame. Preferably, the cross section of the limiting net is in a continuous W shape, and a propelling device is arranged at a position, corresponding to the fixed frame, on the air inlet pipeline, an output end of the propelling device is connected with the fixed frame and used for driving the limiting net to reciprocate in the limiting groove along the horizontal direction. Preferably, the inner wall of the horizontal part of the air inlet pipeline is provided with a drain hole at the part opposite to the dus