Mine electricity junction box

Abstract

The utility model provides a mine electricity junction box, which comprises a box body provided with a cavity and an opening, the opening is communicated with the cavity, and the opening is arranged on the side wall of the box body; the cover plate is movably connected with the box body, the cover plate can open or close the opening, and a wiring hole is formed in the cover plate; the placing plate is arranged on one side, facing the cavity, of the cover plate and is used for fixing the electronic components; and the heat dissipation assembly is arranged in the cavity, and the heat dissipation assembly is used for dissipating heat of the electronic component. According to the technical scheme provided by the utility model, the problem that electronic components are inconvenient to mount and dismount when an electric junction box in the prior art is used can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine wiring technology field, specifically, relates to a mine electricity junction box. BACKGROUND

[0002] At present, coal mine machine is mainly used for the mining, supporting, transportation, washing and selecting production process of coal mine equipment, and the coal mine machine is a special equipment for coal mining, which is different from other mine equipment due to its professional characteristics, and the electricity junction box needs to be used in the use process of the coal mine machine.

[0003] In the prior art, the coal mine electricity junction box cannot conveniently move the mounting plate on which the electronic components are mounted to the outside of the box body during use, and the electronic components need to be disassembled from the mounting plate during maintenance, so that the electronic components cannot be conveniently installed and maintained, thereby reducing the installation and maintenance efficiency. UTILITY MODEL CONTENTS

[0004] The utility model provides a mine electricity junction box to solve the inconvenient installation and disassembly of electronic components of the electricity junction box in the prior art during use.

[0005] The utility model provides a mine electricity junction box, mine electricity junction box includes: box body has cavity and opening, opening communicates with cavity, and opening is arranged on the side wall of box body, cover plate is movably connected with box body, and the cover plate can open or close the opening, and the cover plate is provided with wiring hole, placing plate is arranged on the side of cover plate towards cavity, and the placing plate is used for fixing electronic component, heat dissipation component is arranged in the cavity, and the heat dissipation component is used for heat dissipation to electronic component.

[0006] Further, the mine electricity junction box further includes a driving member arranged on the box body, the driving member is drivingly connected with the cover plate, the cover plate is hingedly connected with the box body, and the driving member can drive the cover plate to rotate relative to the box body to open or close the opening.

[0007] Further, the heat dissipation component includes a heat conduction structure, part of the heat conduction structure is connected with the placing plate, and the heat conduction structure is used for leading out the heat on the placing plate.

[0008] Further, the heat conduction structure includes: a heat dissipation cavity located in the placing plate; a flow-through channel fixedly arranged in the cavity, the flow-through channel has oppositely arranged first inlet and first outlet, and the first outlet is used for communicating with the outside; and a connecting pipe arranged on the placing plate, one end of the connecting pipe communicates with the flow-through channel, and the other end of the connecting pipe is used for plug-in cooperation with the first inlet, when the cover plate closes the opening, the heat dissipation cavity is communicated with the flow-through channel through the connecting pipe, and when the cover plate opens the opening, the connecting pipe is disconnected with the first inlet.

[0009] Further, the heat dissipation assembly further comprises a ventilation structure, the box further has an air inlet, the air inlet is communicated with the cavity, and the ventilation structure comprises a fan, an air suction port of the fan is communicated with the air inlet, and an air outlet of the fan is communicated with the cavity.

[0010] Further, the ventilation structure further comprises an air inlet channel, the air inlet channel is fixedly arranged in the cavity, the air inlet channel and the flow channel are independent of each other, the air inlet channel has a second inlet and a plurality of second outlets, the plurality of second outlets are arranged at intervals along an extension direction of the air inlet channel, the second inlet is communicated with the air outlet, and the second outlet is communicated with the cavity.

[0011] Further, the mine power connection box further comprises a ventilation box, the ventilation box is arranged in the box and located between the fan and the placing plate, at least part of the flow channel and at least part of the air inlet channel are arranged in the ventilation box, the first inlet and the second outlet are arranged on a side of the ventilation box facing the placing plate, and the second inlet and the first outlet are arranged on a side of the ventilation box close to the fan.

[0012] Further, the mine power connection box further comprises a mounting plate, the mounting plate is arranged on an outer side wall of the box away from the cover plate, the mounting plate has a flow cavity and a plurality of exhaust holes, the exhaust holes are communicated with the flow cavity, the plurality of exhaust holes are arranged at intervals on a side wall of the mounting plate away from the box, and the flow cavity is communicated with the first outlet.

[0013] Further, the driving member has oppositely arranged fixed and moving ends, the moving end can move relative to the fixed end in a horizontal direction, the fixed end is arranged on an outer side wall of the top plate of the box, the moving end is hingedly connected with a top end of the cover plate, a top of the cover plate is hingedly connected with an end of the top plate close to the moving end, and the moving end can drive the cover plate to rotate relative to the box to open or close the opening.

[0014] Further, the flow channel comprises a first channel and a second channel communicated with each other, the first channel is located in the ventilation box, an end of the first channel away from the second channel is used for being connected with the connecting pipe, the second channel is located on a side of the ventilation box away from the cover plate, the second channel has the first outlet, and a one-way valve is arranged on the second channel to limit the flow direction of gas in the second channel.

[0015] The technical scheme of the utility model discloses, the cover plate is movably connected with the box body, the cover plate can open or close the opening, the cover plate is provided with the wiring hole, the placing plate is arranged on the side of the cover plate towards the cavity, and the placing plate is used for fixing electronic components.Compared with the prior art in which the placing plate is located in the cavity and cannot be moved, the application can move the placing plate out of the cavity when the opening of the cover plate is opened, so that the installation and disassembly of the electronic components are facilitated.In need of overhauling the electronic components, the electronic components do not need to be disassembled, and the electronic components can be moved out of the cavity by directly opening the cover plate, and the electronic components can be overhauled.The convenience and efficiency of the disassembly and overhauling of the electronic components in the electric wiring box are greatly improved.Meanwhile, the cavity is also provided with a heat dissipation assembly, which can dissipate heat of the electronic components in the cavity and ensure the stability of the operation of the electric wiring box. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of this application form a part of the disclosure, serve to further provide a further understanding of the present application, and together with the illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A structure schematic view of the mine electric wiring box is shown.

[0018] Figure 2 A structure schematic view of the mine electric wiring box is shown.

[0019] Figure 3 A structure schematic view of the cover plate is shown.

[0020] Among them, the above drawings include the following reference signs:

[0021] 10, the box body; 101, the cavity;

[0022] 11, the top plate;

[0023] 111, the first section; 112, the second section;

[0024] 113, the shell; 114, the pin shaft;

[0025] 20, the cover plate;

[0026] 201, the wiring hole;

[0027] 202, the groove; 203, the connecting rod;

[0028] 21, the placing plate;

[0029] 30, the driving piece;

[0030] 31, the fixed end; 32, the moving end;

[0031] 41. heat dissipation cavity; 42. first inlet;

[0032] 43. Connecting pipe;

[0033] 51. Fan;

[0034] 511, air outlet;

[0035] 61. Second import; 62. Second export;

[0036] 70. Ventilation box;

[0037] 80. Mounting plate;

[0038] 81. Circulation cavity;

[0039] 82. Exhaust hole;

[0040] 90, Second Channel;

[0041] 91. One-way valve. DETAILED DESCRIPTION

[0042] The following will be combined with the 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 some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. 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.

[0043] like Figures 1 to 3 As shown, an embodiment of the present invention provides a mine electrical junction box, which includes: a box body 10, a cover plate 20, a placement plate 21 and a heat dissipation assembly. The box body 10 has a cavity 101 and an opening, the opening is connected to the cavity 101, and the opening is arranged on the side wall of the box body 10. The cover plate 20 is movably connected to the box body 10, and the cover plate 20 can open or close the opening. The cover plate 20 is provided with a wiring hole 201, which facilitates the access and maintenance of the line. The placement plate 21 is arranged on the side of the cover plate 20 facing the cavity 101, and the placement plate 21 is used to fix electronic components. The heat dissipation assembly is arranged in the cavity 101, and the heat dissipation assembly is used to dissipate heat from the electronic components.

[0044] The technical scheme of the utility model, the cover plate 20 is movably connected with the box body 10, the cover plate 20 can open or close the opening, the cover plate 20 is provided with the wiring hole 201, the placing plate 21 is arranged on the side of the cover plate 20 towards the cavity 101, and the placing plate 21 is used for fixing electronic components.Compared with the placing plate in the prior art being located in the cavity and being unable to move, the application can move the placing plate 21 out of the cavity 101 when the cover plate 20 opens the opening, so that the electronic components are conveniently mounted and dismounted.In need of overhauling the electronic components, the electronic components also do not need to be dismounted, and the electronic components can be moved out of the cavity 101 by directly opening the cover plate 20, and the electronic components can be overhauled.The convenience and efficiency of dismounting and overhauling the electronic components in the electric wiring box are greatly improved.Meanwhile, the cavity 101 is also provided with a heat dissipation assembly, which can dissipate heat of the electronic components in the cavity 101 and ensure the stability of the electric wiring box.

[0045] In the embodiment, the specific structure of the heat dissipation assembly is not limited as long as the electronic components in the cavity can be dissipated.

[0046] In some embodiments, the heat dissipation assembly can be set as a forced air cooling device.In other embodiments, the heat dissipation assembly can be set as a liquid cooling device.

[0047] The mine electric wiring box further includes a driving member 30, the driving member 30 is arranged on the box body 10, the driving member 30 is drivingly connected with the cover plate 20, the cover plate 20 is hingedly connected with the box body 10, and the driving member 30 can drive the cover plate 20 to rotate relative to the box body 10 to open or close the opening.Through the arrangement of the driving member 30, the cover plate 20 is more easily opened and closed, the physical exertion of the operator is reduced, and the operation efficiency and safety are improved.Compared with manual closing, the opening or closing of the cover plate 20 controlled by the driving member 30 can improve the speed and accuracy of the operation, which helps to improve the dismounting efficiency and overhauling efficiency.

[0048] In the embodiment, the specific structure of the driving member 30 is not limited.The driving member 30 can be set as a motor drive or a hydraulic drive.

[0049] Specifically, the heat dissipation assembly includes a heat conduction structure, part of the heat conduction structure is connected with the placing plate 21, and the heat conduction structure is used for conducting heat on the placing plate 21.The heat conduction structure can effectively absorb and conduct the heat generated by the electronic components during operation, prevent equipment failure caused by overheating, ensure that the mine electric wiring box can still operate normally in a high-temperature environment, significantly improve the stability of the electronic components, and prolong the service life of the equipment.The maintenance and replacement costs caused by overheating are reduced.

[0050] Further, the heat conduction structure comprises: a heat dissipation cavity 41, a flow passage and a connecting pipe 43. The heat dissipation cavity 41 is arranged in the placing plate 21. The flow passage is fixedly arranged in the cavity 101, and has a first inlet 42 and a first outlet arranged oppositely, and the first outlet is used for communicating with the outside. The heat dissipation cavity 41 can timely conduct the heat generated by the electronic components and transferred to the placing plate 21 to the flow passage, and can reduce the heat transferred to the cavity 101 by the electronic components.

[0051] As shown in Figure 2 , the connecting pipe 43 is arranged on the placing plate 21, one end of the connecting pipe 43 communicates with the flow passage, and the other end of the connecting pipe 43 is used for plug-in cooperation with the first inlet 42. When the cover plate 20 closes the opening, the heat dissipation cavity 41 is in conduction with the flow passage through the connecting pipe 43. When the cover plate 20 opens the opening, the connecting pipe 43 is disconnected with the first inlet 42. Through the above arrangement, the plug-in cooperation of the connecting pipe 43 and the first inlet 42 can ensure the convenience of the maintenance of the electronic components, and can also conduct the heat generated by the electronic components. Moreover, without additional operation, the connection and disconnection of the connecting pipe 43 and the first inlet 42 can be realized by opening or closing the cover plate 20, and the structure is simple and the operation is convenient.

[0052] At least one of the connecting pipe 43 and the first inlet 42 is made of elastic material, so as to facilitate the cooperation of the connecting pipe 43 and the first inlet 42.

[0053] Further, the heat dissipation assembly further comprises a ventilation structure, and the box body 10 further has an air inlet, the air inlet communicates with the cavity 101, and the ventilation structure comprises a fan 51, the air inlet of the fan 51 communicates with the air inlet, and the air outlet 511 of the fan 51 communicates with the cavity 101. Through the arrangement of the fan 51, the cold air of the outside can be introduced, and the exhaust of the hot air is accelerated, and the heat dissipation efficiency is improved. Especially in the environment such as mine with poor ventilation, the heat dissipation condition inside the terminal box can be effectively improved, so that the equipment can also maintain a good working state in the environment with poor ventilation.

[0054] In the embodiment, the specific arrangement position of the air outlet is not limited, and can be arranged on the side wall of any side of the box body 10.

[0055] In other embodiments, the air outlet can also be from the terminal hole 201. In this way, the air flow can also pass through the electronic components, so as to improve the flow speed of the heat on the electronic components.

[0056] The ventilation structure further comprises an air inlet channel fixedly arranged in the cavity 101, the air inlet channel is independent of the flow channel, the air inlet channel has a second inlet 61 and a plurality of second outlets 62, the plurality of second outlets 62 are arranged at intervals along the extension direction of the air inlet channel, the second inlet 61 is in communication with the air outlet 511, and the second outlets 62 are in communication with the cavity 101. The above design can make the external air uniformly and quickly distributed in the entire cavity 101, avoid local overheating of the cavity 101, and improve the uniformity and efficiency of heat dissipation of the heat dissipation assembly.

[0057] Preferably, the second outlets 62 are arranged towards the electronic components, so as to accelerate the flow rate of the surrounding hot air in the electronic components, so that the flowing air quickly takes away the heat on the electronic components, and the heat dissipation efficiency of the heat dissipation assembly is improved.

[0058] The plurality of placing plates 21 are arranged at intervals along the extension direction of the cover plate 20, the plurality of connecting pipes 43 are arranged, the plurality of first inlets 42 are arranged, the plurality of first inlets 42, the plurality of connecting pipes 43 and the plurality of placing plates 21 are arranged one by one in correspondence, and the plurality of second outlets 62 are arranged in correspondence with the plurality of electronic components on the plurality of placing plates 21.

[0059] Further, the mine electrical junction box further comprises a ventilation box 70, the ventilation box 70 is arranged in the box body 10 and located between the fan 51 and the placing plate 21, at least part of the flow channel and at least part of the air inlet channel are arranged in the ventilation box 70, the first inlet 42 and the second outlet 62 are arranged on the side of the ventilation box 70 facing the placing plate 21, and the second inlet 61 and the first outlet are arranged on the side of the ventilation box 70 close to the fan 51. The arrangement of the ventilation box 70 further optimizes the airflow path, improves the heat dissipation efficiency, and also plays a role of isolation, reduces the influence of the external environment or the cavity 101 environment on the flow channel and the air inlet channel, and ensures that the airflow can stably flow in different channels, so as to ensure the stability of heat dissipation and heat conduction.

[0060] As shown in the figure, Figure 2 The mine electrical junction box further comprises a mounting plate 80 arranged on the outer side wall of the box body 10 away from the cover plate 20, the mounting plate 80 has a flow cavity 81 and a plurality of exhaust holes 82, the exhaust holes 82 are in communication with the flow cavity 81, the plurality of exhaust holes 82 are arranged at intervals on the side wall of the mounting plate 80 away from the box body 10, and the flow cavity 81 is in communication with the first outlet. The exhaust hole design of the mounting plate 80 can ensure the rapid exhaust of hot air in the heat dissipation cavity 41, and the design of the plurality of exhaust holes not only improves the exhaust efficiency of the hot air, but also reduces the exhaust noise in the form of dispersing airflow, provides a more comfortable working environment for the operator, and also reduces the interference to other equipment in the mine.

[0061] Specifically, the edge of the mounting plate 80 is also provided with a mounting hole, which facilitates the installation and fixation of the electrical junction box.

[0062] As shown in Figure 1 and Figure 2 The driving member 30 has a fixed end 31 and a moving end 32 arranged oppositely, the moving end 32 can move along the horizontal direction relative to the fixed end 31, the fixed end 31 is arranged on the outer side wall of the top plate 11 of the box body 10, and the moving end 32 is hingedly connected with the top end of the cover plate 20, the top of the cover plate 20 is hingedly connected with one end of the top plate 11 close to the moving end 32, and the moving end 32 can drive the cover plate 20 to rotate relative to the box body 10 to open or close the opening. Such a driving structure not only is easy to operate, but also can ensure the stable opening and closing of the cover plate 20, and improves the safety and convenience of operation.

[0063] The top of the cover plate 20 has a groove 202, and a connecting rod 203 is arranged in the groove 202, and the moving end 32 is hingedly connected with the connecting rod 203.

[0064] Further, the top plate 11 has a first section 111 and a second section 112 arranged in sequence, one end of the second section 112 is hingedly connected with the first section 111 through a pin shaft 114, the other end of the second section 112 is connected with the top of the cover plate 20, the fixed end 31 is arranged on the first section 111, and the cover plate 20 rotates relative to the first section 111 through the second section 112. In this way, the stability of opening or closing of the cover plate 20 is improved.

[0065] The outer side wall of the first section 111 is provided with a shell 113, the shell 113 covers the outer periphery of the fixed end 31, and the moving end 32 penetrates the shell 113. The driving member 30 can be protected by the shell 113.

[0066] Further, the flow channel includes a first channel and a second channel 90 connected with each other, the first channel is located in the ventilation box 70, one end of the first channel away from the second channel 90 is used for being connected with the connecting pipe 43, the second channel 90 is located on the side of the ventilation box 70 away from the cover plate 20, the second channel 90 has a first outlet, and a one-way valve 91 is arranged on the second channel 90 to limit the flow direction of the gas in the second channel 90. The arrangement of the one-way valve 91 prevents the reverse inflow of external air in the non-radiation state, protects the internal electronic components, especially in the environment of the mine and the like where explosive gas may exist, the design of the one-way valve 91 can effectively prevent the invasion of explosive gas, and the safety of the equipment is improved.

[0067] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0068] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments are not intended to limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportion relationship for the convenience of description. The technology, methods and devices known to those skilled in the related art can not be discussed in detail, but should be considered as part of the specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0069] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0070] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0071] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.

[0072] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mine electrical junction box, characterized in that: The mine electrical junction box comprises: A box body (10) having a cavity (101) and an opening, wherein the opening is in communication with the cavity (101) and is provided on a side wall of the box body (10); a cover plate (20) movably connected to the box body (10), the cover plate (20) being capable of opening or closing the opening, and a wiring hole (201) being provided on the cover plate (20); a placement plate (21), arranged on a side of the cover plate (20) facing the cavity (101), the placement plate (21) being used to fix electronic components; A heat dissipation component is arranged in the cavity (101), and is used to dissipate heat from the electronic components.

2. The mine electrical junction box according to claim 1, characterized in that: The mine electrical connection box further comprises a driving member (30), wherein the driving member (30) is arranged on the box body (10), the driving member (30) is drivingly connected to the cover plate (20), the cover plate (20) is hingedly connected to the box body (10), and the driving member (30) can drive the cover plate (20) to rotate relative to the box body (10) to open or close the opening.

3. The mine electrical junction box according to claim 1, characterized in that: The heat dissipation component comprises a heat-conducting structure, a portion of which is connected to the placement plate (21), and the heat-conducting structure is used to conduct heat from the placement plate (21).

4. The mine electrical junction box according to claim 3, characterized in that: The heat-conducting structure comprises: A heat dissipation cavity (41) is located inside the placement plate (21); a circulation channel fixedly disposed in the cavity (101), the circulation channel having a first inlet (42) and a first outlet disposed opposite to each other, the first outlet being used for communicating with the outside; A connecting pipe (43) is provided on the placement plate (21), one end of the connecting pipe (43) is connected to the circulation channel, and the other end of the connecting pipe (43) is used for plugging and matching with the first inlet (42); when the cover plate (20) closes the opening, the heat dissipation cavity (41) is connected to the circulation channel through the connecting pipe (43); when the cover plate (20) opens the opening, the connecting pipe (43) is disconnected from the first inlet (42).

5. The mine electrical junction box according to claim 4, characterized in that: The heat dissipation assembly further includes a ventilation structure, the box body (10) further includes an air inlet, the air inlet is communicated with the cavity (101), the ventilation structure includes a fan (51), the air outlet of the fan (51) is communicated with the air inlet, and the air outlet (511) of the fan (51) is communicated with the cavity (101).

6. The mine electrical junction box according to claim 5, characterized in that: The ventilation structure further comprises an air intake channel, the air intake channel being fixedly arranged in the cavity (101), the air intake channel being independent of the circulation channel, the air intake channel having a second inlet (61) and a plurality of second outlets (62), the plurality of second outlets (62) being arranged at intervals along the extension direction of the air intake channel, the second inlet (61) being communicated with the air outlet (511), and the second outlet (62) being communicated with the cavity (101).

7. The mine electrical junction box according to claim 6, characterized in that: The mine electrical connection box further comprises a ventilation box (70), which is arranged in the box body (10) and located between the fan (51) and the placement plate (21), at least part of the circulation channel and at least part of the air intake channel are arranged in the ventilation box (70), the first inlet (42) and the second outlet (62) are both arranged on the side of the ventilation box (70) facing the placement plate (21), and the second inlet (61) and the first outlet are both arranged on the side of the ventilation box (70) close to the fan (51).

8. The mine electrical junction box according to claim 4, characterized in that: The mine electrical connection box further comprises a mounting plate (80), wherein the mounting plate (80) is arranged on the outer side wall of the box body (10) away from the cover plate (20), and the mounting plate (80) has a flow cavity (81) and a plurality of exhaust holes (82), wherein the exhaust holes (82) are communicated with the flow cavity (81), and the plurality of exhaust holes (82) are arranged at intervals on the side wall of the mounting plate (80) away from the box body (10), and the flow cavity (81) is communicated with the first outlet.

9. The mine electrical junction box according to claim 2, characterized in that: The driving member (30) has a fixed end (31) and a movable end (32) arranged opposite to each other, the movable end (32) can move horizontally relative to the fixed end (31), the fixed end (31) is arranged on the outer side wall of the top plate (11) of the box body (10), the movable end (32) is hingedly connected to the top end of the cover plate (20), the top of the cover plate (20) is hingedly connected to an end of the top plate (11) close to the movable end (32), and the movable end (32) can drive the cover plate (20) to rotate relative to the box body (10) to open or close the opening.

10. The mine electrical junction box according to claim 7, characterized in that: The circulation channel comprises a first channel and a second channel (90) that are interconnected, wherein the first channel is located in the ventilation box (70), and an end of the first channel away from the second channel (90) is used to be connected to the connecting pipe (43), and the second channel (90) is located on a side of the ventilation box (70) away from the cover plate (20), and the second channel (90) has the first outlet. A one-way valve (91) is provided on the second channel (90) to limit the flow direction of gas in the second channel (90).

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