Mine return air heat recycling device

Abstract

The invention discloses a mine return air heat recycling device, and relates to the technical field of mine return air heat recycling devices, the mine return air heat recycling device comprises a recycling conversion box, a filter plate is fixedly mounted in the recycling conversion box, and a heat conducting plate A, a heat conducting plate B and a heat conducting plate C are fixedly mounted in the recycling conversion box. According to the device, a motor A drives a lead screw A to rotate, so that a connecting block A is driven to move in a heat conducting plate A, at the moment, the connecting block A drives a baffle to move in the heat conducting plate A, and therefore the size of a ventilation groove is controlled and adjusted, when the flow speed of return air is high, the ventilation groove can be enlarged, and the flowability of the air speed in the recovery conversion box is improved; the situation that the heat conduction plate A is damaged due to large resistance is avoided, when the flow speed of return air is low, the ventilation grooves can be shrunk, and therefore the contact time of the return air and the heat conduction plate A and the contact time of the return air and the heat conduction pieces are prolonged, and heat can be guided into the heat conduction plate A to the maximum extent when the flow speed of the return air is low.

Description

Technical Field

[0001] The invention relates to the technical field of mine return air heat recovery and utilization devices, and in particular to a mine return air heat recovery and utilization device. Background Art

[0002] The mine return air heat recovery device is a device and system specifically used to recover and utilize the heat brought by the return air in the mine. This device converts the waste heat in the mine into usable thermal energy through heat exchange technology, thereby improving the energy utilization efficiency of the mine and reducing operating costs.

[0003] For example, the "return air waste heat recovery device" with publication number: CN211234065U comprises an air inlet and an air outlet, wherein the mine return air is blown from the air inlet to the air outlet, and further comprises: a phase change energy storage unit (10), wherein the phase change energy storage unit (10) comprises a plurality of phase change heat storage parts (101), wherein the phase change heat storage parts (101) are internally encapsulated with a phase change energy storage material for absorbing heat in the mine return air. The return air waste heat recovery device has high heat exchange efficiency, low heat loss, high reliability, and can be reused.

[0004] However, in the prior art, although this type of waste heat recovery device has the effects of high heat exchange efficiency, low heat loss, high reliability and reusability, it is lacking in controlling the return air flow rate. Since this type of waste heat recovery device does not have a mechanism for adjusting the size of the ventilation slots, this will result in that when the return air flow rate is too large, due to the small ventilation slots, the pressure on the heat energy conduction structure will increase, and the service life of the heat energy conduction structure will be reduced. When the return air flow rate is small, a large amount of return air will flow out through the ventilation slots, resulting in the heat energy conduction structure being unable to fully absorb the heat energy in the return air, thereby reducing the efficiency of heat recovery. Summary of the invention

[0005] The purpose of the present invention is to provide a device for recovering and utilizing mine return air heat, so as to solve the problem that the waste heat recovery device proposed in the above background technology does not have a mechanism for adjusting the size of the ventilation slots, resulting in a reduced service life of the heat conduction structure and reduced heat recovery efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A device for recycling heat from mine return air, comprising a recovery conversion box, a filter plate fixedly installed inside the recovery conversion box, a heat conducting plate A, a heat conducting plate B and a heat conducting plate C fixedly installed inside the recovery conversion box, a heat conducting sheet fixedly installed on the surface of the heat conducting plate A, a ventilation groove is opened through the surface of the heat conducting plate A, a motor A fixedly installed inside the heat conducting plate A, a screw rod A is installed on the output end of the motor A, a connecting block A is slidably connected inside the heat conducting plate A, a baffle is fixedly installed on the surface of the connecting block A, a heating plate is fixedly installed on the bottom surface of the heat conducting plate A, a water tank is arranged inside the recovery conversion box, a temperature sensor A is fixedly installed on the bottom surface of the water tank, a temperature sensor B is fixedly installed inside the heat conducting plate A, a water inlet connecting pipe is fixedly installed on the input end of the water tank, and a drainage electric control valve is fixedly installed on the output end of the water tank.

[0007] Preferably, ventilation grooves are provided through the surfaces of the heat conducting plate A, the heat conducting plate B and the heat conducting plate C, and heat conducting sheets are fixedly installed on the surfaces of the heat conducting plate A, the heat conducting plate B and the heat conducting plate C.

[0008] Preferably, a heating plate is fixedly mounted on the bottom surfaces of the heat conducting plates A, B and C. The heat conducting plates A, B, C, the heating plate and the heat conducting sheet are all made of copper, and the filter plate is made of ceramic.

[0009] Preferably, the heat conducting plate A, heat conducting plate B and heat conducting plate C are each provided with a motor A, a screw rod A, a connecting block A and a baffle, the screw rod A is rotationally connected to the heat conducting plate A, the connecting block A and the screw rod A are threadedly connected, and the baffle and the heat conducting plate A are slidingly connected.

[0010] Preferably, a motor B is fixedly installed inside the recycling conversion box, a screw rod B is installed at the output end of the motor B, a limit rod is fixedly installed inside the recycling conversion box, a cleaning plate is slidably connected inside the recycling conversion box, an electric push rod is fixedly installed inside the recycling conversion box, a push plate is installed at the output end of the electric push rod, a rotating rod A is rotatably connected inside the recycling conversion box, a torsion spring A is sleeved on the surface of the rotating rod A, a cover plate is fixedly installed at one end of the rotating rod A, a dirt collecting trough is provided inside the recycling conversion box, a material guide block is fixedly installed inside the dirt collecting trough, and a dirt guide trough is provided inside the recycling conversion box.

[0011] Preferably, the screw rod B is rotationally connected to the recovery conversion box, the cleaning plate is threadedly connected to the screw rod B, the cleaning plate is slidingly connected to the limit rod, and the cleaning plate is slidingly connected to the filter plate.

[0012] Preferably, the push plate is slidably connected to the recovery conversion box, one end of the torsion spring A is connected to the side of the cover plate, and the other end is connected to the inner surface of the recovery conversion box, the guide block is shaped like an isosceles triangle, the sewage guide groove and the sewage collecting groove are connected, and the bottom surface of the sewage guide groove is an inclined surface.

[0013] Preferably, the cleaning plate is rotatably connected to a rotating rod B inside, a scraper is fixedly installed at one end of the rotating rod, a torsion spring B is sleeved on the surface of the rotating rod B, the scraper is slidably connected to a shift block inside, a clamping block is fixedly installed on the bottom surface of the shift block, a rubber strip is provided on the bottom surface of the scraper, a clamping groove is opened inside the rubber strip, and a tension spring is provided inside the scraper.

[0014] Preferably, one end of the torsion spring B is connected to the surface of the scraper, and the other end is connected to the inner surface of the cleaning plate; one end of the tension spring is connected to the surface of the shift block, and the other end is connected to the inner surface of the scraper.

[0015] Preferably, the card block is slidably connected to the card slot, the rubber strip is slidably connected to the filter plate, and the rubber strip is made of natural rubber.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the motor A drives the screw rod A to rotate, thereby driving the connecting block A to move in the heat conducting plate A. At this time, the connecting block A drives the baffle to move in the heat conducting plate A, thereby controlling and adjusting the size of the ventilation slot. When the return air flow rate is faster, the ventilation slot can be enlarged, thereby improving the fluidity of the wind speed in the recovery conversion box, avoiding the situation where the heat conducting plate A is damaged by greater resistance. When the return air flow rate is slower, the ventilation slot can be reduced, thereby increasing the contact time between the return air and the heat conducting plate A and the heat conducting sheet, so that the return air can maximize the heat introduction into the heat conducting plate A when the flow rate is slow. The heat conducting plate A will introduce the heat into the heating plate, and then the water in the water tank is heated by the heating plate, thereby completing the recovery of the heat energy in the return air.

[0017] 2. In the present invention, the motor B drives the screw rod B to rotate, and the screw rod B drives the cleaning plate to slide on the surface of the limit rod when rotating, thereby completing the cleaning of the filter plate. At this time, the electric push rod is opened again, and the electric push rod drives the push plate to move upward, and the push plate drives the cover plate to rotate when moving upward. After the cover plate is turned open, the dust cleaned on the filter plate will fall into the sewage collecting tank. At this time, the guide block will guide the dust into the sewage guiding tank, and then discharge it through the sewage guiding tank. At this time, the push plate is driven downward by the electric push rod. After the push plate is away from the cover plate, the cover plate will rotate due to the torsion force of the torsion spring A until the sewage collecting tank is closed.

[0018] 3. In the present invention, the scraper is driven to move by the cleaning plate. After the scraper moves to the filter plate, the scraper will rotate due to the torsion force of the torsion spring B, thereby driving the rubber strip to fit closely to the surface of the filter plate. As the cleaning plate continues to move downward, the rubber strip will also scrape off the dust on the filter screen. When the rubber strip needs to be replaced due to severe wear, it is only necessary to move the shift block. When the shift block moves, it will drive the card block to slide inside the card slot. When the card block moves to the point where it can be pulled out of the card slot, the rubber strip can be removed from the scraper. At this time, a new rubber strip is inserted into the card block. After the rubber strip is inserted, the shift block can be released. At this time, the shift block will move due to the tension of the tension spring, thereby driving the card block to be stuck in the card slot, thereby completing the replacement of the rubber strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a device for recovering heat from mine return air according to the present invention; Figure 2 It is a schematic diagram of the explosion structure of the filter plate, the heat conducting plate A, the heat conducting plate B and the heat conducting plate C in a device for recovering heat from return air in a mine according to the present invention; Figure 3 A device for recovering heat from mine return air according to the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 It is a cross-sectional view of a recovery conversion box in a device for recovering and utilizing heat from mine return air according to the present invention; Figure 5 It is a schematic diagram of the explosion structure of the motor B, the cover plate and the cleaning plate in a device for recovering heat from mine return air of the present invention; Figure 6 A device for recovering heat from mine return air according to the present invention Figure 5 The enlarged view of point B in the middle; Figure 7 This is an internal display diagram of a sewage collecting tank and a sewage guiding tank in a device for recovering heat from return air in a mine according to the present invention; Figure 8 It is a schematic diagram of the explosion structure at the cleaning plate and the scraper in a device for recovering heat from mine return air according to the present invention; Fig. 9 A device for recovering heat from mine return air according to the present invention Figure 8 Enlarged view of point C in the middle; Fig.10 It is a cross-sectional view of a scraper in a device for recovering heat from return air in a mine according to the present invention; Fig.11 A device for recovering heat from mine return air according to the present invention Fig.10 Enlarged view of point D in the middle.

[0020] In the figure: 100, recovery conversion box; 101, filter plate; 102, heat conduction plate A; 103, heat conduction plate B; 104, heat conduction plate C; 105, heat conduction sheet; 106, ventilation slot; 107, motor A; 108, screw rod A; 109, connection block A; 110, baffle; 111, heating plate; 112, water tank; 113, temperature sensor A; 114, temperature sensor B; 115, water inlet connecting pipe; 116, drainage electric control valve; 200, motor B; 201, screw rod B; 202, cleaning plate; 203, limit rod; 204, electric push rod; 205, push plate; 206, rotating rod A; 207, torsion spring A; 208, cover plate; 209, sewage collecting trough; 210, guide block; 211, sewage guiding trough; 300, scraper; 301, rotating rod B; 302, torsion spring B; 303, rubber strip; 304, slot; 305, shift block; 306, clamp block; 307, tension spring. DETAILED DESCRIPTION

[0021] 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 implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1-4As shown: A device for recycling heat from return air in a mine, comprising a recycling conversion box 100, a filter plate 101 is fixedly installed inside the recycling conversion box 100, a heat conducting plate A102, a heat conducting plate B103 and a heat conducting plate C104 are fixedly installed inside the recycling conversion box 100, a heat conducting sheet 105 is fixedly installed on the surface of the heat conducting plate A102, a ventilation slot 106 is opened through the surface of the heat conducting plate A102, a motor A107 is fixedly installed inside the heat conducting plate A102, and the motor A107 The output end of the heat transfer box 100 is provided with a screw rod A108, the heat transfer plate A102 is internally slidably connected with a connecting block A109, the surface of the connecting block A109 is fixedly provided with a baffle 110, the bottom surface of the heat transfer plate A102 is fixedly provided with a heating plate 111, a water tank 112 is provided inside the recovery conversion box 100, the bottom surface of the water tank 112 is fixedly provided with a temperature sensor A113, a temperature sensor B114 is fixedly provided inside the heat transfer plate A102, and an inlet port 112 is fixedly provided at the input end of the water tank 112. A water connecting pipe 115 is provided, and a drain electric control valve 116 is fixedly installed at the output end of the water tank 112. Ventilation grooves 106 are provided on the surfaces of the heat conducting plates A102, B103 and C104. Heat conducting sheets 105 are fixedly installed on the surfaces of the heat conducting plates A102, B103 and C104. A heating plate 111 is fixedly installed on the bottom surfaces of the heat conducting plates A102, B103 and C104. , heat conducting plate C104, heating plate 111 and heat conducting sheet 105 are all made of copper, the filter plate 101 is made of ceramic, the heat conducting plate A102, heat conducting plate B103 and heat conducting plate C104 are all provided with motor A107, screw rod A108, connecting block A109 and baffle 110, the screw rod A108 is rotatably connected to the heat conducting plate A102, the connecting block A109 and the screw rod A108 are threadedly connected, and the baffle 110 and the heat conducting plate A102 are slidably connected.

[0023] In this embodiment, the return air of the mine is filtered by the filter plate 101, so as to prevent dust or impurities in the return air from adhering to the heat conducting plate A102, thereby reducing the thermal conductivity of the heat conducting plate A102. The ceramic material design of the filter plate 101 reduces the heat absorption of the filter plate 101, so that the heat energy in the return air is introduced into the heat conducting plate A102 to the greatest extent. The motor A107 drives the screw rod A108 to rotate. When the screw rod A108 rotates, it drives the connection block A109 to move in the heat conducting plate A102. At this time, the connection block A109 drives the baffle 110 to move in the heat conducting plate A102, thereby controlling and adjusting the size of the ventilation slot 106. When the return air velocity is fast, the ventilation slot 106 can be enlarged, thereby improving the fluidity of the wind speed in the recovery conversion box 100, and avoiding the heat conducting plate A102 from being damaged by large resistance. When the return air velocity is slow, the ventilation slot 106 can be reduced, thereby increasing the contact time between the return air and the heat conducting plate A102 and the heat conducting sheet 105, so that the return air can maximize the heat introduced into the heat conducting plate A102 even when the velocity is slow. Heat is introduced into the heating plate 111 through the heat conducting plate A102, and then the water in the water tank 112 is heated by the heating plate 111, and then the temperature of the heat conducting plate A102, the heat conducting plate B103 and the heat conducting plate C104 is detected by the temperature sensor B114. When the temperature of the heat conducting plate B103 or the heat conducting plate C104 is low, the size of the ventilation slot 106 can be controlled by the motor A107, the screw rod A108, the connecting block A109 and the baffle 110, thereby increasing the temperature of the heat conducting plate B103 and the heat conducting plate C104; The water temperature in the water tank 112 is monitored by the temperature sensor A113. When the water temperature reaches the set temperature, the heated water can be transported to other areas of the mine through the drainage electric control valve 116, thereby completing the recovery of heat energy in the return air.

[0024] Embodiment 2: Figure 5-7As shown, a motor B200 is fixedly installed inside the recycling conversion box 100, a screw rod B201 is installed at the output end of the motor B200, a limit rod 203 is fixedly installed inside the recycling conversion box 100, a cleaning plate 202 is slidably connected inside the recycling conversion box 100, an electric push rod 204 is fixedly installed inside the recycling conversion box 100, a push plate 205 is installed at the output end of the electric push rod 204, a rotating rod A206 is rotatably connected inside the recycling conversion box 100, a torsion spring A207 is sleeved on the surface of the rotating rod A206, a cover plate 208 is fixedly installed at one end of the rotating rod A206, a dirt collecting tank 209 is opened inside the recycling conversion box 100, and the dirt collecting tank 209 A material guide block 210 is fixedly installed inside, a sewage guide groove 211 is opened inside the recovery conversion box 100, the screw rod B201 is rotatably connected to the recovery conversion box 100, the cleaning plate 202 is connected to the screw rod B201 by a thread, the cleaning plate 202 is slidably connected to the limit rod 203, the cleaning plate 202 is slidably connected to the filter plate 101, the push plate 205 is slidably connected to the recovery conversion box 100, one end of the torsion spring A207 is connected to the side of the cover plate 208, and the other end is connected to the inner surface of the recovery conversion box 100, the material guide block 210 is shaped like an isosceles triangle, the sewage guide groove 211 is connected to the sewage collecting groove 209, and the bottom surface of the sewage guide groove 211 is an inclined surface.

[0025] In this embodiment, the motor B200 drives the screw rod B201 to rotate, and the screw rod B201 drives the cleaning plate 202 to slide on the surface of the limit rod 203 when rotating, thereby completing the cleaning of the filter plate 101. At this time, the electric push rod 204 is opened again, and the electric push rod 204 drives the push plate 205 to move upward, and the push plate 205 drives the cover plate 208 to rotate when moving upward. After the cover plate 208 is turned open, the dust cleaned from the filter plate 101 will fall into the sewage collecting tank 209. At this time, the guide block 210 will guide the dust into the sewage guiding tank 211, and then discharge it through the sewage guiding tank 211. At this time, the push plate 205 is driven to move downward by the electric push rod 204. After the push plate 205 is away from the cover plate 208, the cover plate 208 will be rotated by the torsion force of the torsion spring A207 until the sewage collecting tank 209 is closed.

[0026] Embodiment 3: According to Figure 8-11As shown, the cleaning plate 202 is internally rotatably connected with a rotating rod B301, one end of which is fixedly mounted with a scraper 300, a torsion spring B302 is sleeved on the surface of the rotating rod B301, the scraper 300 is internally slidably connected with a shift block 305, a clamping block 306 is fixedly mounted on the bottom surface of the shift block 305, a rubber strip 303 is arranged on the bottom surface of the scraper 300, a clamping groove 304 is opened inside the rubber strip 303, a tension spring 307 is arranged inside the scraper 300, one end of the torsion spring B302 is connected to the surface of the scraper 300, and the other end is connected to the inner surface of the cleaning plate 202, one end of the tension spring 307 is connected to the surface of the shift block 305, and the other end is connected to the inner surface of the scraper 300, the clamping block 306 is slidably connected to the clamping groove 304, the rubber strip 303 is slidably connected to the filter plate 101, and the material of the rubber strip 303 is natural rubber.

[0027] In this embodiment, the scraper 300 is driven to move by the cleaning plate 202. After the scraper 300 moves to the filter plate 101, the scraper 300 is rotated by the torsion force of the torsion spring B302, thereby driving the rubber strip 303 to closely fit the surface of the filter plate 101. As the cleaning plate 202 continues to move downward, the rubber strip 303 will also scrape off the dust on the filter screen. When the rubber strip 303 needs to be replaced due to severe wear, it only needs to move the shift block 305. The shift block 305 moves downward. When the block 306 moves, it will drive the block 306 to slide inside the slot 304. When the block 306 moves to the point where it can be pulled out of the slot 304, the rubber strip 303 can be removed from the scraper 300. At this time, a new rubber strip 303 is inserted into the block 306. After the rubber strip 303 is inserted, the shift block 305 can be released. At this time, the shift block 305 will move under the pulling force of the tension spring 307, thereby driving the block 306 to be inserted into the slot 304, thereby completing the replacement of the rubber strip 303.

[0028] The use method and working principle of the device: when the return air is recovered through the recovery conversion box 100, the filter plate 101 filters the return air from the mine, which can prevent dust or impurities in the return air from adhering to the heat conduction plate A102, thereby reducing the thermal conductivity of the heat conduction plate A102. The ceramic material design of the filter plate 101 reduces the heat absorption of the filter plate 101, so that the heat energy in the return air is introduced into the heat conduction plate A102 to the greatest extent; When the size of the ventilation slot 106 needs to be adjusted, the motor A107 only needs to be turned on. The motor A107 will drive the screw rod A108 to rotate. When the screw rod A108 rotates, it will drive the connection block A109 to move in the heat conducting plate A102. At this time, the connection block A109 will drive the baffle 110 to move in the heat conducting plate A102, so as to control and adjust the size of the ventilation slot 106. When the return air flow rate is fast, the ventilation slot 106 can be enlarged, so as to improve the fluidity of the wind speed in the recovery conversion box 100, and avoid the situation where the heat conducting plate A102 is damaged by large resistance. When the return air flow rate is slow, the ventilation slot 106 can be reduced, so as to increase the contact time between the return air and the heat conducting plate A102 and the heat conducting sheet 105, so that the return air can maximize the heat introduction into the heat conducting plate A102 even when the flow rate is slow. After the heat conducting plate A102, the heat conducting plate B103 and the heat conducting plate C104 absorb the heat energy in the return air, the heat conducting plate A102, the heat conducting plate B103 and the heat conducting plate C104 will introduce the heat into the heating plate 111, and then the water in the water tank 112 will be heated by the heating plate 111, and then the temperature of the heat conducting plate A102, the heat conducting plate B103 and the heat conducting plate C104 will be detected by the temperature sensor B114. When the temperature of the heat conducting plate B103 or the heat conducting plate C104 is low, the size of the ventilation slot 106 can be controlled by the motor A107, the screw rod A108, the connecting block A109 and the baffle 110, thereby increasing the temperature of the heat conducting plate B103 and the heat conducting plate C104; When the water in the water tank 112 needs to be discharged after being heated to a certain degree, the water temperature in the water tank 112 only needs to be monitored through the temperature sensor A113. When the water temperature reaches the set temperature, the heated water can be transported to other areas of the mine through the drainage electric control valve 116, thereby completing the recovery of the heat energy in the return air, and then the cold water can be injected into the water tank 112 through the water inlet connecting pipe 115; When the filter plate 101 needs to be cleaned, the motor B200 only needs to be turned on, and the motor B200 will drive the screw rod B201 to rotate. When the screw rod B201 rotates, it will drive the cleaning plate 202 to slide on the surface of the limit rod 203, so as to complete the cleaning of the filter plate 101. At this time, the electric push rod 204 is opened again, and the electric push rod 204 will drive the push plate 205 to move upward, and the push plate 205 will drive the cover plate 208 to rotate when it moves upward. After the cover plate 208 is turned open, the dust cleaned from the filter plate 101 will fall into the sewage collecting tank 209. At this time, the guide block 210 will guide the dust into the sewage guiding tank 211, so as to discharge it through the sewage guiding tank 211. At this time, the push plate 205 is driven downward by the electric push rod 204. After the push plate 205 is away from the cover plate 208, the cover plate 208 will be rotated by the torsion of the torsion spring A207 until the sewage collecting tank 209 is closed. When the cleaning plate 202 moves on the filter plate 101, the scraper 300 will be driven to move. After the scraper 300 moves to the filter plate 101, the scraper 300 will rotate due to the torsion force of the torsion spring B302, thereby driving the rubber strip 303 to fit tightly to the surface of the filter plate 101. As the cleaning plate 202 continues to move downward, the rubber strip 303 will also scrape off the dust on the filter screen. When the rubber strip 303 needs to be replaced due to severe wear, it only needs to move the shift block 305. The shift block 305 When moving, the card block 306 will be driven to slide inside the card slot 304. When the card block 306 moves to the point where it can be pulled out of the card slot 304, the rubber strip 303 can be removed from the scraper 300. At this time, a new rubber strip 303 can be inserted into the card block 306. After the rubber strip 303 is inserted, the shift block 305 can be released. At this time, the shift block 305 will be moved by the pulling force of the tension spring 307, thereby driving the card block 306 to be inserted into the card slot 304, thereby completing the replacement of the rubber strip 303.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for recovering and utilizing heat from return air in a mine, comprising a recovery conversion box (100), characterized in that: A filter plate (101) is fixedly mounted inside the recovery conversion box (100), a heat conducting plate A (102), a heat conducting plate B (103) and a heat conducting plate C (104) are fixedly mounted inside the recovery conversion box (100), a heat conducting sheet (105) is fixedly mounted on the surface of the heat conducting plate A (102), a ventilation slot (106) is provided through the surface of the heat conducting plate A (102), a motor A (107) is fixedly mounted inside the heat conducting plate A (102), a screw rod A (108) is mounted on the output end of the motor A (107), and a connecting rod (109) is slidably connected inside the heat conducting plate A (102). A connecting block A (109), a baffle (110) being fixedly mounted on the surface of the connecting block A (109), a heating plate (111) being fixedly mounted on the bottom surface of the heat conducting plate A (102), a water tank (112) being arranged inside the recovery conversion box (100), a temperature sensor A (113) being fixedly mounted on the bottom surface of the water tank (112), a temperature sensor B (114) being fixedly mounted inside the heat conducting plate A (102), a water inlet connecting pipe (115) being fixedly mounted on the input end of the water tank (112), and a drainage electric control valve (116) being fixedly mounted on the output end of the water tank (112).

2. The device for recovering heat from mine return air according to claim 1, characterized in that: Ventilation slots (106) are provided through the surfaces of the heat conducting plate A (102), the heat conducting plate B (103) and the heat conducting plate C (104), and heat conducting sheets (105) are fixedly mounted on the surfaces of the heat conducting plate A (102), the heat conducting plate B (103) and the heat conducting plate C (104).

3. The device for recovering heat from mine return air according to claim 1, characterized in that: A heating plate (111) is fixedly mounted on the bottom surfaces of the heat conducting plate A (102), the heat conducting plate B (103), and the heat conducting plate C (104); the heat conducting plate A (102), the heat conducting plate B (103), the heat conducting plate C (104), the heating plate (111), and the heat conducting sheet (105) are all made of copper; and the filter plate (101) is made of ceramic.

4. The device for recovering heat from mine return air according to claim 1, characterized in that: The heat conducting plate A (102), the heat conducting plate B (103) and the heat conducting plate C (104) are each provided with a motor A (107), a screw rod A (108), a connecting block A (109) and a baffle (110); the screw rod A (108) is rotationally connected to the heat conducting plate A (102); the connecting block A (109) and the screw rod A (108) are threadedly connected; and the baffle (110) and the heat conducting plate A (102) are slidingly connected.

5. The device for recovering heat from mine return air according to claim 1, characterized in that: A motor B (200) is fixedly installed inside the recovery conversion box (100), a screw rod B (201) is installed at the output end of the motor B (200), a limit rod (203) is fixedly installed inside the recovery conversion box (100), a cleaning plate (202) is slidably connected inside the recovery conversion box (100), an electric push rod (204) is fixedly installed inside the recovery conversion box (100), a push plate (205) is installed at the output end of the electric push rod (204), a rotating rod A (206) is rotatably connected inside the recovery conversion box (100), a torsion spring A (207) is sleeved on the surface of the rotating rod A (206), a cover plate (208) is fixedly installed at one end of the rotating rod A (206), a dirt collecting groove (209) is provided inside the recovery conversion box (100), a material guide block (210) is fixedly installed inside the dirt collecting groove (209), and a dirt guide groove (211) is provided inside the recovery conversion box (100).

6. The device for recovering heat from mine return air according to claim 5, characterized in that: The screw rod B (201) is rotationally connected to the recovery conversion box (100), the cleaning plate (202) is threadedly connected to the screw rod B (201), the cleaning plate (202) is slidably connected to the limit rod (203), and the cleaning plate (202) is slidably connected to the filter plate (101).

7. The device for recovering heat from mine return air according to claim 6, characterized in that: The push plate (205) is slidably connected to the recovery conversion box (100); one end of the torsion spring A (207) is connected to the side of the cover plate (208), and the other end is connected to the inner surface of the recovery conversion box (100); the material guide block (210) is in the shape of an isosceles triangle; the sewage guide groove (211) is connected to the sewage collection groove (209); and the bottom surface of the sewage guide groove (211) is an inclined surface.

8. The device for recovering heat from mine return air according to claim 5, characterized in that: The cleaning plate (202) is rotatably connected to a rotating rod B (301) inside, a scraper (300) is fixedly mounted on one end of the rotating rod, a torsion spring B (302) is sleeved on the surface of the rotating rod B (301), a shifting block (305) is slidably connected inside the scraper (300), a clamping block (306) is fixedly mounted on the bottom surface of the shifting block (305), a rubber strip (303) is arranged on the bottom surface of the scraper (300), a clamping groove (304) is provided inside the rubber strip (303), and a tension spring (307) is arranged inside the scraper (300).

9. The device for recovering heat from mine return air according to claim 8, characterized in that: One end of the torsion spring B (302) is connected to the surface of the scraper (300), and the other end is connected to the inner surface of the cleaning plate (202); one end of the tension spring (307) is connected to the surface of the shifting block (305), and the other end is connected to the inner surface of the scraper (300).

10. The device for recovering heat from mine return air according to claim 8, characterized in that: The clamping block (306) is slidably connected to the clamping slot (304), and the rubber strip (303) is slidably connected to the filter plate (101); the rubber strip (303) is made of natural rubber.

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