Coal mine underground geothermal energy recycling device

Abstract

The invention relates to the technical field of geothermal energy recycling, and discloses a coal mine underground geothermal energy recycling device which comprises a mounting bottom plate, a plurality of supporting legs fixedly connected to the bottom of the mounting bottom plate, a mounting frame fixedly connected to the top of the mounting bottom plate, and a double-shaft motor fixedly connected to the outer wall of the mounting frame. A heat exchange space is arranged in the recycling mechanism; the cleaning mechanism is mounted in the recycling mechanism; and the sediment removing mechanism is mounted at the bottom of the cleaning mechanism. According to the coal mine underground hot water recycling device, two driving gears and two driven gear rings are arranged, when the coal mine underground hot water recycling device is used for recycling coal mine underground hot water, a double-shaft motor is started to drive two rotating shafts to rotate, drive the two driving gears to rotate, drive the two driven gear rings to rotate and drive a circular shell to rotate, and therefore a brush is driven to move; and various mineral impurities attached to the outer wall of the water inlet cylinder are removed.

Description

[0001] The present invention relates to the technical field of geothermal energy recovery and utilization, and in particular to a geothermal energy recovery and utilization device in an underground coal mine. Background Art

[0002] Geothermal energy recovery and utilization refers to the effective recovery and utilization of underground heat energy through technical means. This heat energy mainly comes from the natural heat source inside the earth. Geothermal energy is usually stored in groundwater layers in the form of hot water or steam. This hot water is extracted through drilling and used for heating, power generation, or directly providing heat for industry. In some areas, the hot water stored underground can spontaneously evaporate into steam due to its high temperature. This steam can be used to drive generators to generate electricity or be used for industrial heating.

[0003] The recovery and utilization of geothermal energy in coal mines usually involves the recovery and utilization of the thermal energy of underground hot water in coal mines. Underground hot water contains impurities of various minerals. During the process of using heat recovery equipment to recover the thermal energy of underground hot water, the various impurities carried in the underground hot water are easily attached to the heat recovery equipment to form scale, thereby reducing the heat conduction efficiency and resulting in a decrease in the heat recovery effect. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a device for recovering and utilizing geothermal energy in a coal mine, comprising a mounting base, a plurality of support legs fixedly connected to the bottom of the mounting base, a mounting frame fixedly connected to the top of the mounting base, and a dual-axis motor fixedly connected to the outer wall of the mounting frame, characterized in that it also includes: A recycling mechanism, wherein a heat exchange space is provided inside the recycling mechanism; A cleaning mechanism installed inside the recycling mechanism; The sediment removal mechanism is installed at the bottom of the cleaning mechanism.

[0005] Preferably, the recycling mechanism includes: A rotating assembly is rotatably connected to the inner wall of the mounting frame via a rotating member; The rotating member includes a circular shell rotatably connected to the inner wall of the mounting frame, and the bottom of the circular shell is slidably connected to the top of the mounting base plate; The water inlet and outlet components are slidably connected to the inner wall of the installation base plate through water flow parts; The water flow component comprises a water inlet cylinder slidably connected to the inner wall of the installation base plate, a discharge hole is opened on the top of the installation base plate, and a water outlet device is fixedly connected to the bottom of the installation base plate.

[0006] Preferably, the cleaning mechanism comprises: A brush assembly, the brush assembly is fixedly connected to the inner wall of the rotating assembly through a cleaning member; The cleaning member includes a mounting block fixedly connected to the inner wall of the circular shell, a circular ring plate fixedly connected to the inner wall of the circular shell, and the inner wall of the circular ring plate is sleeved on the outer wall of the water inlet cylinder; A sliding assembly, the sliding assembly is fixedly connected to the top of the rotating assembly through a sliding member; The sliding part comprises a limiting sliding groove fixed on the top of the circular shell, and a connecting plate is fixedly connected to the outer wall of the water inlet cylinder.

[0007] Preferably, the sediment removal mechanism comprises: The collecting assembly is fixedly connected to the annular plate through the collecting piece bottom; The collecting member includes a collecting shell fixedly connected to the bottom of the circular ring plate. A through hole is provided on the outer wall of the collecting shell; The scraping component has a top that is fixedly connected to the bottom of the brush component.

[0008] Preferably, the rotating assembly includes two driving gears that are symmetrically distributed and fixedly connected to the outer wall of the circular shell. Both output ends of the dual-axis motor are fixedly connected to the rotating shaft. The outer walls of the two rotating shafts are fixedly connected to the driving gears, and the outer walls of the driving gears on the same side are meshed with the outer wall of the driven gear ring.

[0009] Preferably, the water inlet and outlet assembly includes a mounting plate slidably connected to the inner wall of the circular outer shell, the outer wall of the water inlet cylinder is slidably connected to the inner wall of the mounting plate, a water inlet channel is opened at the top of the water inlet cylinder, a water inlet pipe is fixedly connected to the top of the water inlet cylinder, and a spiral plate is fixedly connected to the inner wall of the water inlet cylinder.

[0010] Preferably, the brush assembly includes an inner gear ring fixedly connected to the inner wall of the mounting plate, a rotating rod rotatably connected to the inner wall of the circular ring plate, a rotating gear fixedly connected to the outer wall of the rotating rod, the outer wall of the rotating gear is meshed with the inner wall of the inner gear ring, a brush is fixedly connected to the outer wall of the rotating rod, and the bottom of the rotating rod is rotatably connected to the top of the mounting block.

[0011] Preferably, the sliding assembly includes a plurality of spherical sliding rods distributed in an arc array and fixedly connected to the bottom of the connecting plate, the bottoms of the plurality of spherical sliding rods are slidably connected to the inner wall of the limiting sliding groove, the inner wall of the connecting plate is slidably connected with a plurality of guide rods distributed in an arc array, the bottoms of the plurality of guide rods are fixedly connected to the top of the mounting plate, the tops of the plurality of sliding assemblies are commonly fixedly connected to a top plate, the outer wall of the top plate is fixedly connected to the inner wall of the mounting frame, the outer walls of the plurality of guide rods are sleeved with springs, the tops of the plurality of springs are fixedly connected to the bottom of the connecting plate, and the bottoms of the plurality of springs are fixedly connected to the top of the mounting plate.

[0012] Preferably, the collecting assembly includes an elastic card plate clamped on the inner wall of the collecting shell, a plurality of inlet holes are opened on the outer wall of the elastic card plate, a plurality of drainage plates are fixedly connected to the outer wall of the elastic card plate, and a plurality of filter meshes are connected through the outer wall of the elastic card plate.

[0013] Preferably, the scraping assembly includes an inclined plate fixedly connected to the inner wall of the discharge hole, a scraper fixedly connected to the bottom of the mounting block, a shielding plate fixedly connected to the outer wall of the scraper, and a porous cover plate fixedly connected to the outer wall of the scraper.

[0014] The present invention has the following beneficial effects: (1) The two driving gears and two driven gear rings provided in the present invention, when using the device to recycle underground hot water in a coal mine, start the dual-axis motor to drive both rotating shafts to rotate, thereby driving both driving gears to rotate, thereby driving both driven gear rings to rotate, thereby driving the circular shell to rotate, thereby driving the brush to make a circular motion around the outer wall of the water inlet cylinder, and removing various mineral impurities carried in the underground hot water attached to the outer wall of the water inlet cylinder, preventing various mineral impurities from adhering to and accumulating on the outer wall of the water inlet cylinder. If this continues for a long time, scale is likely to form on the outer wall of the water inlet cylinder, thereby affecting the efficiency of heat transfer of the water inlet cylinder, making the effect of recycling the heat energy of the underground hot water weakened, and even causing corrosion damage to the present device.

[0015] (2) The rotating gear and the inner gear ring provided in the present invention will drive the rotating gear and the inner gear ring to engage with each other when the circular outer shell rotates and drives the brush to make a circular motion around the water inlet cylinder, thereby causing the rotating gear to rotate, thereby driving the rotating rod to rotate, and thereby driving the brush to rotate. In this way, the brush can rotate while making a circular motion around the outer wall of the water inlet cylinder, which is beneficial to improving the strength and effect of the brush in cleaning various mineral impurities carried in the underground hot water attached to the outer wall of the water inlet cylinder.

[0016] (3) The filter mesh provided in the present invention, the circular shell rotates to drive the annular plate and the mounting block to rotate, thereby driving the collection component to rotate. When the collection component rotates, the underground hot water carrying various impurities in the circular shell will enter the collection shell through a number of inlet holes. In the process of the underground hot water entering the collection shell and flowing out through the through holes, the underground hot water will flow through a number of filter meshes, and the number of filter meshes will intercept and filter various impurities in the underground hot water. After the impurities are filtered out, the underground hot water will go out of the collection shell through the through holes and return to the circular shell. In this way, the collection component can collect various impurities that are cleaned by the brush from the outer wall of the water inlet cylinder and thus float in the underground hot water. In this way, the content of various impurities in the underground hot water in the circular shell can be effectively reduced, and the various impurities cleaned from the outer wall can be prevented from being re-adhered to the outer wall of the water inlet cylinder, thereby affecting the recovery and utilization of the thermal energy of the underground hot water.

[0017] (4) The several drainage plates provided in the present invention play the role of drainage and disturbance. Various impurities cleaned from the outer wall of the water inlet cylinder by the brush can enter the collection shell together with the underground hot water better and more when they are just cleaned and just float in the water, thereby increasing the effect of the collection component on collecting various impurities floating in the underground hot water.

[0018] (5) The scraper provided in the present invention will continuously rotate to scrape various impurities deposited on the installation base plate into the discharge hole; the inclined plate provided will intercept various impurities entering the water outlet device, preventing various impurities that have entered the water outlet device from floating back into the circular shell; the shielding plate provided will continuously rotate through the discharge hole, scraping various impurities into the discharge hole, and then the shielding plate will block and seal the discharge hole, further reducing the possibility of various impurities that have just entered the discharge hole floating back again, so that the impurities that have entered the discharge hole can be better discharged with the underground hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the rotating assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the water inlet and outlet components of the present invention; Figure 5 It is a schematic diagram of the local structure of the present invention; Figure 6 This is a schematic structural diagram of the brush assembly of the present invention; Figure 7 This is an exploded schematic diagram of the sliding assembly structure of the present invention; Figure 8 It is a schematic diagram of the local structure of the sliding assembly of the present invention; Figure 9 It is a schematic cross-sectional view of a local structure of the present invention; Figure 10 This is an exploded schematic diagram of the collecting assembly structure of the present invention; Figure 11 For the present invention Figure 10Schematic diagram of the structure at A in the middle; Figure 12 This is a schematic structural diagram of the scraping component of the present invention; Figure 13 It is a schematic diagram of the local structure of the scraping component of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows: Figure: 1. Recycling mechanism; 11. Rotating assembly; 111. Circular housing; 112. Driven gear ring; 113. Driving gear; 114. Rotating shaft; 12. Water inlet and outlet assembly; 121. Mounting plate; 122. Water inlet cylinder; 123. Water inlet channel; 124. Water inlet pipe; 125. Spiral plate; 126. Water outlet device; 127. Discharge hole; 13. Mounting base plate; 14. Support legs; 15. Mounting frame; 16. Dual-axis motor; 2. Cleaning mechanism; 21. Brush assembly; 211. Circular plate; 212. Inner gear ring; 213. Rotating Gear; 214, brush; 215, rotating rod; 216, mounting block; 22, sliding assembly; 221, limiting slide; 222, connecting plate; 223, ball slide; 224, guide rod; 225, spring; 226, top plate; 3, sedimentation removal mechanism; 31, collecting assembly; 311, collecting shell; 312, through hole; 313, elastic card; 314, drainage plate; 315, entry hole; 316, filter screen; 32, scraping assembly; 321, tilting plate; 322, shielding plate; 323, scraper; 324, porous cover plate. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0023] For example 1, please refer to Figure 1 - Figure 6 The present invention is a device for recovering and utilizing geothermal energy in underground coal mines, comprising a mounting base 13, a plurality of support legs 14 fixedly connected to the bottom of the mounting base 13, a mounting frame 15 fixedly connected to the top of the mounting base 13, a dual-axis motor 16 fixedly connected to the outer wall of the mounting frame 15, and further comprising: The recycling mechanism 1 has a heat exchange space provided inside. The cleaning mechanism 2 is installed inside the recycling mechanism 1; The sediment removal mechanism 3 is installed at the bottom of the cleaning mechanism 2 .

[0024] The recycling organization 1 includes: The rotating assembly 11 is rotatably connected to the inner wall of the mounting frame 15 via a rotating member; The rotating member includes a circular housing 111 rotatably connected to the inner wall of the mounting frame 15 , and the bottom of the circular housing 111 is slidably connected to the top of the mounting base 13 ; The water inlet and outlet assembly 12 is slidably connected to the inner wall of the installation base plate 13 through a water flow member; The water flow component includes a water inlet cylinder 122 slidably connected to the inner wall of the installation base plate 13 , a discharge hole 127 is opened on the top of the installation base plate 13 , and a water outlet device 126 is fixedly connected to the bottom of the installation base plate 13 .

[0025] The cleaning mechanism 2 includes: The brush assembly 21 is fixedly connected to the inner wall of the rotating assembly 11 through a cleaning member; The cleaning member includes a mounting block 216 fixedly connected to the inner wall of the circular housing 111, a circular plate 211 fixedly connected to the inner wall of the circular housing 111, and the inner wall of the circular plate 211 is sleeved on the outer wall of the water inlet cylinder 122; The rotating assembly 11 includes two driving gears 113 symmetrically distributed and fixedly connected to the outer wall of the circular shell 111. The two output ends of the dual-axis motor 16 are fixedly connected to the rotating shaft 114. The outer walls of the two rotating shafts 114 are fixedly connected to the driving gears 113. The outer walls of the driving gears 113 on the same side are meshed with the outer wall of the driven gear ring 112.

[0026] The water inlet and outlet assembly 12 includes a mounting plate 121 that is slidably connected to the inner wall of the circular shell 111, the outer wall of the water inlet cylinder 122 is slidably connected to the inner wall of the mounting plate 121, a water inlet channel 123 is opened at the top of the water inlet cylinder 122, a water inlet pipe 124 is fixedly connected to the top of the water inlet cylinder 122, and a spiral plate 125 is fixedly connected to the inner wall of the water inlet cylinder 122.

[0027] The brush assembly 21 includes an inner gear ring 212 fixedly connected to the inner wall of the mounting plate 121, a rotating rod 215 rotatably connected to the inner wall of the circular ring plate 211, a rotating gear 213 fixedly connected to the outer wall of the rotating rod 215, the outer wall of the rotating gear 213 is meshed with the inner wall of the inner gear ring 212, a brush 214 is fixedly connected to the outer wall of the rotating rod 215, and the bottom of the rotating rod 215 is rotatably connected to the top of the mounting block 216.

[0028] The water inlet cylinder 122 is composed of a water inlet cylinder body and two hoses connected to the top and bottom of the water inlet cylinder body respectively; The water outlet device 126 is composed of a rectangular box and a water outlet hose connected to the rectangular box. The installation position of the water outlet device 126 at the bottom of the installation base plate 13 corresponds to the discharge hole 127. The above-mentioned dual-axis motor 16 has two axes, and can control two objects to run simultaneously or separately through the two axes. It is a mature technical means in the prior art, and this solution will not elaborate on its structure and working principle here. In the specific implementation of the present invention, the device is placed at the location where it is needed, the water inlet pipe 124 is connected to the water inlet pipeline of the underground hot water in the coal mine, the water outlet device 126 is connected to the discharge pipeline of the underground hot water, the hose of the water inlet cylinder 122 at the upper part is connected to the water inlet pipeline of domestic water or industrial water that needs to utilize the thermal energy of underground wastewater, and the hose of the water inlet cylinder 122 at the lower part is connected to the water outlet pipeline of domestic water or industrial water that needs to utilize the thermal energy of underground wastewater; The underground hot water in the coal mine begins to be transported. The underground hot water enters the water inlet channel 123 through the water inlet pipe 124, and further enters the space between the circular shell 111 and the water inlet cylinder 122. Then, the underground hot water enters the water outlet device 126 through the discharge hole 127 and is further discharged. At the same time, cold water that needs to utilize the thermal energy of underground wastewater is continuously transported into the water inlet cylinder 122. The cold water entering the water inlet cylinder 122 flows from top to bottom in the water inlet cylinder 122 and then flows out of the water inlet cylinder 122. During this process, the underground hot water that enters between the circular shell 111 and the water inlet cylinder 122 transfers its own thermal energy to the cold water in the water inlet cylinder 122, thereby heating the cold water in the water inlet cylinder 122 and realizing the recovery and utilization of the thermal energy of the underground hot water in the coal mine. The cold water entering the water inlet cylinder 122 flows downward in a spiral under the action of the spiral plate 125. This can extend the time from the cold water entering the water inlet cylinder 122 to the time it flows out. At the same time, the contact area and contact time between the cold water and the inner wall of the water inlet cylinder 122 are increased, thereby increasing the opportunity for heat exchange and improving the efficiency of heat energy recovery. While the above process is in progress, the dual-axis motor 16 is turned on to drive both rotating shafts 114 to rotate, thereby driving both driving gears 113 to rotate, thereby driving both driven gear rings 112 to rotate, thereby driving the circular housing 111 to rotate, thereby driving the brush 214 to perform a circular motion around the outer wall of the water inlet cylinder 122, thereby removing various mineral impurities carried in the underground hot water adhering to the outer wall of the water inlet cylinder 122, and preventing various mineral impurities from adhering to and accumulating on the outer wall of the water inlet cylinder 122. If this continues for a long time, it is easy to form scale on the outer wall of the water inlet cylinder 122, thereby affecting the efficiency of heat transfer of the water inlet cylinder 122, reducing the effect of recycling the heat energy of the underground hot water, and even causing corrosion damage to the device; When the circular shell 111 rotates and drives the brush 214 to make a circular motion around the water inlet cylinder 122, it will drive the rotating gear 213 to engage with the inner gear ring 212, so that the rotating gear 213 rotates, thereby driving the rotating rod 215 to rotate, thereby driving the brush 214 to rotate. In this way, the brush 214 can rotate while making a circular motion around the outer wall of the water inlet cylinder 122, which is beneficial to improve the strength and effect of the brush 214 in cleaning various mineral impurities carried in the underground hot water attached to the outer wall of the water inlet cylinder 122.

[0029] For Example 2, please refer to 7- Figure 13 , a coal mine underground geothermal energy recovery and utilization device, the cleaning mechanism 2 includes: The sliding assembly 22 is fixedly connected to the top of the rotating assembly 11 through a sliding member; The sliding member includes a limiting sliding groove 221 fixed on the top of the circular shell 111, and a connecting plate 222 is fixedly connected to the outer wall of the water inlet cylinder 122.

[0030] The sediment removal mechanism 3 includes: The collecting assembly 31 is fixedly connected to the bottom of the circular plate 211 through a collecting member; the collecting member includes a collecting shell 311 fixedly connected to the bottom of the circular plate 211, and a through hole 312 is opened on the outer wall of the collecting shell 311; The scraping assembly 32 has a top that is fixedly connected to the bottom of the brush assembly 21 .

[0031] The sliding assembly 22 includes a plurality of spherical slide rods 223 distributed in an arc array and fixedly connected to the bottom of the connecting plate 222. The bottoms of the plurality of spherical slide rods 223 are slidably connected to the inner wall of the limiting slide groove 221. The inner wall of the connecting plate 222 is slidably connected with a plurality of guide rods 224 distributed in an arc array. The bottoms of the plurality of guide rods 224 are fixedly connected to the top of the mounting plate 121. The tops of the plurality of sliding assemblies 22 are commonly fixedly connected to a top plate 226. The outer wall of the top plate 226 is fixedly connected to the inner wall of the mounting frame 15. The outer walls of the plurality of guide rods 224 are sleeved with springs 225. The tops of the plurality of springs 225 are fixedly connected to the bottom of the connecting plate 222, and the bottoms of the plurality of springs 225 are fixedly connected to the top of the mounting plate 121.

[0032] The collecting assembly 31 includes an elastic card plate 313 which is clamped on the inner wall of the collecting shell 311 , a plurality of inlet holes 315 are opened on the outer wall of the elastic card plate 313 , a plurality of drainage plates 314 are fixedly connected to the outer wall of the elastic card plate 313 , and a plurality of filter screens 316 are connected through the outer wall of the elastic card plate 313 .

[0033] The scraping assembly 32 includes an inclined plate 321 fixedly connected to the inner wall of the discharge hole 127, a scraper 323 fixedly connected to the bottom of the mounting block 216, a shielding plate 322 fixedly connected to the outer wall of the scraper 323, and a porous cover plate 324 fixedly connected to the outer wall of the scraper 323.

[0034] In the specific implementation of the present invention, the rotation of the circular shell 111 drives the annular plate 211 and the mounting block 216 to rotate, thereby driving the collection component 31 to rotate. When the collection component 31 rotates, the underground hot water carrying various impurities in the circular shell 111 will enter the collection shell 311 through the plurality of inlet holes 315. In the process of the underground hot water entering the collection shell 311 and flowing out through the through holes 312, the underground hot water will flow through the plurality of filter meshes 316, and the plurality of filter meshes 316 will intercept various impurities in the underground hot water. After filtering out impurities, the underground hot water will go out of the collecting shell 311 through the through hole 312 and return to the circular shell 111. In this way, the collecting component 31 can collect various impurities floating in the underground hot water cleaned by the brush 214 from the outer wall of the water inlet cylinder 122, thereby effectively reducing the content of various impurities in the underground hot water in the circular shell 111 and preventing various impurities cleaned from the outer wall of 122 from being re-adhered to the outer wall of the water inlet cylinder 122, thereby affecting the recovery and utilization of the heat energy of the underground hot water. The plurality of guide plates 314 serve to guide and disturb the flow. The various impurities cleaned from the outer wall of the water inlet cylinder 122 by the brush 214 can be better and more effectively transported into the collection housing 311 along with the underground hot water just after being cleaned and just floating in the water, thereby increasing the collection effect of the collection assembly 31 on the various impurities floating in the underground hot water. When the circular shell 111 rotates, it drives the annular plate 211 to rotate, so that the ball slide rods 223 all slide in the annular plate 211. When the ball slide rods 223 all slide from a lower position to a higher position in the limiting chute 221, the ball slide rods 223 all produce an upward push on the connecting plate 222, thereby driving the water inlet cylinder 122 to slide upward. In this process, the springs 225 are all stressed and in a stretched state. When the ball slide rods 223 all slide from a higher position to a lower position in the limiting chute 221, the reaction force of the springs 225 The connecting plate 222 slides downward to restore its initial position, thereby driving the water inlet cylinder 122 to slide downward to restore its initial position. In this way, the limiting chute 221 continues to rotate, causing the water inlet cylinder 122 to slide up and down repeatedly, thereby disturbing the underground hot water between the circular shell 111 and the water inlet cylinder 122, so that the underground hot water carrying various impurities can flow toward the inner wall of the circular shell 111 better, so that the flow of underground hot water can better carry various impurities into the collection component 31, thereby increasing the amount and effect of the collection component 31 on various impurities in the underground hot water. When the circular housing 111 rotates and drives the mounting block 216 to rotate, the scraper 323 is driven to rotate, thereby scraping various impurities deposited on the mounting base plate 13. The underground wastewater entering the circular housing 111 will enter the water outlet device 126 through the discharge hole 127. The rotation of the scraper 323 will scrape various impurities deposited on the mounting base plate 13 into the discharge hole 127. The underground hot water continuously flowing through the discharge hole 127 will have an impact and carry effect on various impurities entering the discharge hole 127, thereby helping various impurities entering the discharge hole 127 to better enter the water outlet device 126. The inclined plate 321 will intercept various impurities entering the water outlet device 126, preventing various impurities that have entered the water outlet device 126 from floating back into the circular housing 111. As the scraper 323 continuously rotates through the discharge hole 127 and scrapes various impurities into the discharge hole 127, it disturbs the underground hot water at the bottom of the circular shell 111, causing various impurities on the circular shell 111 to float around. The porous cover plate 324 blocks the various impurities that have just been floated up by the scraper 323, so that the various impurities scraped from the installation base 13 by the scraper 323 can be better retained and then scraped into the discharge hole 127. After the scraper 323 continuously rotates through the discharge hole 127 and scrapes various impurities into the discharge hole 127, the baffle 322 will then block and seal the discharge hole 127, further reducing the possibility of various impurities that have just entered the discharge hole 127 flowing back and floating again, so that the impurities that have entered the discharge hole 127 can be better discharged along with the underground hot water.

[0035] A specific application of this embodiment is as follows: the device is placed at a location where it is needed, the water inlet pipe 124 is connected to the water inlet pipeline of underground hot water in the coal mine, the water outlet device 126 is connected to the discharge pipeline of underground hot water, the hose of the water inlet cylinder 122 at the upper part is connected to the water inlet pipeline of domestic water or industrial water that needs to utilize the thermal energy of underground wastewater, and the hose of the water inlet cylinder 122 at the lower part is connected to the water outlet pipeline of domestic water or industrial water that needs to utilize the thermal energy of underground wastewater; The underground hot water in the coal mine begins to be transported. The underground hot water enters the space between the circular shell 111 and the water inlet cylinder 122 through the water inlet pipe 124 and the water inlet channel 123, and is then discharged through the discharge hole 127. Cold water that needs to utilize the heat energy of the underground wastewater is continuously transported into the water inlet cylinder 122. After flowing from top to bottom in the water inlet cylinder 122, the cold water flows out of the water inlet cylinder 122. The underground hot water transfers its own heat energy to the cold water in the water inlet cylinder 122, thereby heating the cold water in the water inlet cylinder 122, thereby realizing the recovery and utilization of the heat energy of the underground hot water in the coal mine. Turning on the dual-axis motor 16 drives both rotating shafts 114 to rotate, thereby driving both driving gears 113 to rotate, thereby driving both driven gear rings 112 to rotate, thereby driving the circular housing 111 to rotate, thereby driving the brush 214 to make a circular motion around the outer wall of the water inlet cylinder 122, thereby removing various mineral impurities attached to the outer wall of the water inlet cylinder 122; When the brush 214 makes a circular motion around the water inlet cylinder 122, it drives the rotating gear 213 to mesh with the inner gear ring 212, thereby causing the rotating gear 213 to rotate, thereby driving the rotating rod 215 to rotate, and thus driving the brush 214 to rotate; The circular housing 111 rotates, driving the annular plate 211 and the mounting block 216 to rotate, thereby driving the collection assembly 31 to rotate. The underground hot water carrying various impurities in the circular housing 111 enters the collection housing 311 through the plurality of inlet holes 315. In the process of the underground hot water entering the collection housing 311 and flowing out through the through holes 312, the underground hot water flows through the plurality of filter screens 316, which intercept and filter various impurities in the underground hot water. When the circular housing 111 rotates, it drives the annular plate 211 to rotate, thereby making the ball slide bars 223 slide in the annular plate 211. When the ball slide bars 223 slide from the lower position to the higher position in the limiting chute 221, the ball slide bars 223 will produce an upward push on the connecting plate 222, thereby driving the water inlet cylinder 122 to slide upward. During this process, the springs 225 are all stressed and in a stretched state. When the ball slide bars 223 slide from the higher position to the lower position in the limiting chute 221, the reaction force of the springs 225 causes the connecting plate 222 to slide downward to restore to its initial position, thereby driving the water inlet cylinder 122 to slide downward to restore to its initial position. In this way, the limiting chute 221 continues to rotate, causing the water inlet cylinder 122 to slide up and down repeatedly. When the circular housing 111 rotates and drives the mounting block 216 to rotate, the scraper 323 is driven to rotate, and various impurities deposited on the mounting base 13 are scraped into the discharge hole 127 .

[0036] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for recovering and utilizing geothermal energy in a coal mine, comprising a mounting base (13), a plurality of support legs (14) fixedly connected to the bottom of the mounting base (13), a mounting frame (15) fixedly connected to the top of the mounting base (13), and a dual-axis motor (16) fixedly connected to the outer wall of the mounting frame (15), characterized in that: Also includes: A recycling mechanism (1), wherein a heat exchange space is provided inside the recycling mechanism (1); A cleaning mechanism (2), the cleaning mechanism (2) being installed inside the recycling mechanism (1); A sediment removal mechanism (3), wherein the sediment removal mechanism (3) is installed at the bottom of the cleaning mechanism (2).

2. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 1, characterized in that: The recycling mechanism (1) comprises: A rotating assembly (11), the rotating assembly (11) being rotatably connected to the inner wall of the mounting frame (15) via a rotating member; The rotating member comprises a circular shell (111) rotatably connected to the inner wall of the mounting frame (15), and the bottom of the circular shell (111) is slidably connected to the top of the mounting base plate (13); A water inlet and outlet assembly (12), wherein the water inlet and outlet assembly (12) is slidably connected to the inner wall of the mounting base plate (13) via a water flow member; The water flow member comprises a water inlet cylinder (122) slidably connected to the inner wall of the mounting base plate (13); a discharge hole (127) is provided at the top of the mounting base plate (13); and a water outlet device (126) is fixedly connected to the bottom of the mounting base plate (13).

3. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 2, characterized in that: The cleaning mechanism (2) comprises: A brush assembly (21), wherein the brush assembly (21) is fixedly connected to the inner wall of the rotating assembly (11) via a cleaning member; The cleaning member comprises a mounting block (216) fixedly connected to the inner wall of the circular housing (111); a circular ring plate (211) is fixedly connected to the inner wall of the circular housing (111); and the inner wall of the circular ring plate (211) is sleeved on the outer wall of the water inlet cylinder (122); A sliding assembly (22), wherein the sliding assembly (22) is fixedly connected to the top of the rotating assembly (11) via a sliding member; The sliding member comprises a limiting sliding groove (221) fixed on the top of the circular housing (111), and a connecting plate (222) is fixedly connected to the outer wall of the water inlet cylinder (122).

4. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 3, characterized in that: The sediment removal mechanism (3) comprises: A collecting assembly (31), wherein the collecting assembly (31) is fixedly connected to the annular plate (211) via a collecting member bottom; The collecting member comprises a collecting shell (311) fixedly connected to the bottom of the circular ring plate (211), A through hole (312) is provided on the outer wall of the collecting shell (311); A scraping assembly (32), wherein the top of the scraping assembly (32) is fixedly connected to the bottom of the brush assembly (21).

5. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 4, characterized in that: The rotating assembly (11) includes two driving gears (113) symmetrically distributed and fixedly connected to the outer wall of the circular housing (111), and both output ends of the dual-axis motor (16) are fixedly connected to the rotating shaft (114). The outer walls of the two rotating shafts (114) are fixedly connected to the driving gears (113), and the outer walls of the driving gears (113) on the same side are meshed with the outer wall of the driven gear ring (112).

6. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 5, characterized in that: The water inlet and outlet assembly (12) comprises a mounting plate (121) slidably connected to the inner wall of the circular housing (111); the outer wall of the water inlet cylinder (122) is slidably connected to the inner wall of the mounting plate (121); a water inlet channel (123) is provided at the top of the water inlet cylinder (122); a water inlet pipe (124) is fixedly connected to the top of the water inlet cylinder (122); and a spiral plate (125) is fixedly connected to the inner wall of the water inlet cylinder (122).

7. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 6, characterized in that: The brush assembly (21) comprises an inner gear ring (212) fixedly connected to the inner wall of the mounting plate (121); a rotating rod (215) is rotatably connected to the inner wall of the annular plate (211); a rotating gear (213) is fixedly connected to the outer wall of the rotating rod (215); the outer wall of the rotating gear (213) is meshedly connected to the inner wall of the inner gear ring (212); a brush (214) is fixedly connected to the outer wall of the rotating rod (215); and the bottom of the rotating rod (215) is rotatably connected to the top of the mounting block (216).

8. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 7, characterized in that: The sliding assembly (22) includes a plurality of spherical sliding rods (223) distributed in an arc array and fixedly connected to the bottom of the connecting plate (222), the bottoms of the plurality of spherical sliding rods (223) are slidably connected to the inner wall of the limiting sliding groove (221), the inner wall of the connecting plate (222) is slidably connected to a plurality of guide rods (224) distributed in an arc array, the bottoms of the plurality of guide rods (224) are fixedly connected to the top of the mounting plate (121), the tops of the plurality of sliding assemblies (22) are commonly fixedly connected to a top plate (226), the outer wall of the top plate (226) is fixedly connected to the inner wall of the mounting frame (15), the outer walls of the plurality of guide rods (224) are sleeved with springs (225), the tops of the plurality of springs (225) are fixedly connected to the bottom of the connecting plate (222), and the bottoms of the plurality of springs (225) are fixedly connected to the top of the mounting plate (121).

9. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 8, characterized in that: The collecting assembly (31) comprises an elastic card (313) clamped on the inner wall of the collecting shell (311); a plurality of inlet holes (315) are provided on the outer wall of the elastic card (313); a plurality of drainage plates (314) are fixedly connected to the outer wall of the elastic card (313); and a plurality of filter screens (316) are connected through the outer wall of the elastic card (313).

10. The device for recovering and utilizing geothermal energy in underground coal mines according to claim 9, characterized in that: The scraping assembly (32) comprises an inclined plate (321) fixedly connected to the inner wall of the discharge hole (127); a scraper (323) is fixedly connected to the bottom of the mounting block (216); a shielding plate (322) is fixedly connected to the outer wall of the scraper (323); and a porous cover plate (324) is fixedly connected to the outer wall of the scraper (323).

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