Underground goaf filling device for coal mine low-carbon exploitation

Abstract

The invention relates to the technical field of underground goaf filling, in particular to an underground goaf filling device for coal mine low-carbon exploitation, which comprises a rack, an electric wheel, a spray pipe, a box body, a concentric-square-shaped plate, a dust filter bag, an activated carbon plate and the like, the electric wheel is mounted at the bottom of the rack, the spray pipe is connected to the top of the rack, and the box body is connected to the rack; a concentric-square-shaped plate and an activated carbon plate are connected into the box body in a sliding mode, and a dust filtering bag is connected to the concentric-square-shaped plate. A filling material can be sucked into the spraying pipe through the first mud pump, the filling material is sprayed out through the spraying pipe and sprayed to a coal mine goaf to fill the coal mine goaf, harmful gas can be sucked into the box body through the air suction fan, the harmful gas can be purified through the activated carbon plate, and pollution of the harmful gas to the atmosphere and soil is avoided; therefore, harmful gas can be prevented from damaging the ecological environment.

Description

Technical Field

[0001] The present invention relates to the technical field of underground goaf filling, and particularly to an underground goaf filling device for low-carbon coal mining in coal mines. Background Art

[0002] With the increasing attention of people to climate change, low-carbon coal mining in coal mines has become the development direction of the coal industry. During the coal mining process, generally, the goaf of the coal mine is filled to restore the surface morphology, create conditions for land reclamation, and reduce carbon emissions caused by land damage.

[0003] When filling the goaf of a coal mine, a slurry pump is mainly used to send the filling material to the goaf of the coal mine for filling. During the coal mining process, harmful gases such as methane, carbon dioxide, carbon monoxide, and hydrogen sulfide are generated. After the filling material is filled into the goaf of the coal mine, due to the lack of a gas purification structure, the harmful gases will be discharged from the mine, and the discharged harmful gases will cause serious pollution to the surrounding atmosphere, soil, etc., not only damaging the ecological environment but also potentially harming the physical health of the surrounding residents. Summary of the Invention

[0004] In order to overcome the shortcomings that the harmful gases discharged from the mine will cause serious pollution to the surrounding atmosphere, soil, etc., not only damaging the ecological environment but also potentially harming the physical health of the surrounding residents, the present invention provides an underground goaf filling device for low-carbon coal mining in coal mines.

[0005] An underground goaf filling device for low-carbon coal mining in coal mines includes a frame, electric wheels, a spray pipe, a box body, a return-shaped plate, filter dust bags, activated carbon plates, a sealing plate, an air suction fan, an air suction pipe, a purification mechanism, and a storage mechanism. Electric wheels are installed at the bottom of the frame, a spray pipe is connected to the top of the frame, a box body is connected to the frame, a return-shaped plate and an activated carbon plate are slidably connected in the box body, filter dust bags are connected to the return-shaped plate, an access opening is provided on the box body, the return-shaped plate, the filter dust bags, and the activated carbon plate are taken out of the box body through the access opening, a sealing plate for sealing the access opening is commonly connected to the return-shaped plate and the activated carbon plate, an air suction fan is installed in the box body, an air suction pipe is communicated with the box body, the air suction fan sucks harmful gases into the box body through the air suction pipe, the filter dust bags filter the dust in the harmful gases, the activated carbon plates purify the harmful gases, the purification mechanism is used for secondary purification of the purified harmful gases, and the storage mechanism is used for storing the filling material.

[0006] Furthermore, the purification mechanism includes a mounting plate, a water tank, a gas guide box, and an air outlet pipe. The mounting plate is connected to the frame, the water tank is connected to the mounting plate, the gas guide box is communicated with the box body, the air outlet pipe is communicated with the gas guide box, the air outlet pipe penetrates through the top of the water tank, air outlet holes are provided on the air outlet pipe, the air outlet holes are located inside the water tank, and an opening for adding water and potassium permanganate is provided on the water tank.

[0007] Furthermore, the material storage mechanism includes a bottom plate, a first mounting frame, a first storage tank, a first slurry pump, a suction pipe, a hard pipe, a flexible pipe, and a stirring assembly. The top of the bottom plate is connected to the first mounting frame, and the first mounting frame is connected to a first storage tank for storing filling materials. The first slurry pump is installed on the top of the bottom plate. The feed end of the first slurry pump and the first storage tank are connected through a suction pipe. A hard pipe is connected to the discharge end of the first slurry pump, and a flexible pipe is connected to the lower end of the hard pipe. The flexible pipe is connected to a spray pipe. The stirring assembly is used for stirring the raw materials of the filling materials.

[0008] Furthermore, the stirring assembly includes a first stirring rod, a second mounting frame, a second storage tank, a feeding pipe, a second stirring rod, a motor, a second slurry pump, a feed pipe, and a discharge pipe. A first stirring rod for stirring the filling materials is rotatably connected inside the first storage tank. The top of the bottom plate is connected to a second mounting frame, and the second mounting frame is connected to a second storage tank. The feeding pipe is connected to the top of the second storage tank. A second stirring rod for stirring the raw materials of the filling materials is rotatably connected inside the second storage tank. The second stirring rod and the first stirring rod are driven by a pulley set. A motor is installed on the top of the second storage tank, and the output shaft of the motor is connected to the second stirring rod to drive the second stirring rod to rotate. A second slurry pump is installed on the top of the bottom plate. The feed end of the second slurry pump and the second storage tank are connected through a feed pipe. The discharge end of the second slurry pump and the first storage tank are connected through a discharge pipe.

[0009] Furthermore, a blocking mechanism is further included. The blocking mechanism includes a sliding frame, a return spring, a baffle, a roller, and an extrusion assembly. The sliding frame is slidably connected to the mounting plate. A return spring is connected between the mounting plate and the sliding frame. A baffle for blocking the filling materials filled into the mined - out area of the coal mine is connected to the sliding frame. A roller is rotatably connected to the bottom of the baffle. The extrusion assembly is used to push the baffle so that the baffle squeezes the filling materials filled into the mined - out area of the coal mine.

[0010] Furthermore, the extrusion assembly includes a mounting shaft, a winding wheel, a volute spring, a pulling rope, a connecting plate, and a pushing block. The mounting shaft is connected to the bottom of the mounting plate, and the winding wheel is rotatably connected to the mounting shaft. A volute spring is connected between the mounting shaft and the winding wheel. The pulling rope is wound around the winding wheel. The connecting plate is connected to the lower part of the hard pipe, and the pulling rope is connected to the connecting plate. A pushing block is connected to the winding wheel. The pushing block is used to push the sliding frame so that the baffle moves, and the baffle squeezes the filling materials filled into the mined - out area of the coal mine.

[0011] Furthermore, an electric push rod and a pushing plate are further included. Two electric push rods are installed on the top of the mounting plate, and a pushing plate is commonly connected to the telescopic rods of the two electric push rods.

[0012] Further, it also includes a protective shell. The tops of the first storage tank and the second storage tank are jointly connected with a protective shell for protecting the pulley group, and the pulley group is located inside the protective shell.

[0013] The beneficial effects are as follows: 1. In the present invention, the first slurry pump can suck the filling material into the spray pipe, and the filling material is sprayed out through the spray pipe and onto the goaf of the coal mine to fill the goaf of the coal mine. The suction fan can suck the harmful gases into the box body, and the activated carbon plate can purify the harmful gases, avoiding the pollution of the atmosphere and soil by the harmful gases, and thus being able to prevent the harmful gases from damaging the ecological environment.

[0014] 2. The suction fan can suck the purified harmful gases into the air outlet pipe, and the purified harmful gases are sprayed out from the air outlet holes and sprayed into the water containing potassium permanganate. The water containing potassium permanganate can purify the purified harmful gases, improving the purification effect. Moreover, the air outlet holes can disperse the purified harmful gases, enabling the purified harmful gases to come into full contact with the water containing potassium permanganate, further improving the purification effect. At the same time, the water containing potassium permanganate can weaken the wind force discharged by the suction fan, avoiding excessive wind force from blowing up the dust in the mine, and thus being able to prevent dust from being raised.

[0015] 3. The baffle can block the filling material, preventing the filling material from rolling onto the frame, and the baffle can frequently squeeze the filling material to make the filling material vibrate, thereby making the filling material more dense and compact.

[0016] 4. When the telescopic rod of the electric push rod extends, it can drive the push plate to move towards the upper left, and the push plate can push the filling material upward to stack the filling material upward, enabling the filling material to fill the goaf of the coal mine better, with a better filling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shows the three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 Shows the three-dimensional structural schematic diagram of the purification mechanism of the present invention.

[0019] Figure 3 Shows the three-dimensional structural schematic diagram of the air guide box and the air outlet pipe of the present invention.

[0020] Figure 4 Shows the cross-sectional view of the box body and the water tank of the present invention.

[0021] Figure 5 Shows the three-dimensional structural schematic diagram of the storage mechanism of the present invention.

[0022] Figure 6 Shows the cross-sectional view of the first storage tank and the second storage tank of the present invention.

[0023] Figure 7 Shows a three-dimensional structural schematic diagram of the blocking mechanism of the present invention.

[0024] Figure 8 Shows a three-dimensional structural schematic diagram of the mounting shaft, winding wheel, scroll spring and pulling rope of the present invention.

[0025] Figure 9 Shows a three-dimensional structural schematic diagram of the sliding frame, return spring and push block of the present invention.

[0026] Figure 10 Shows a three-dimensional structural schematic diagram of the electric push rod and push plate of the present invention.

[0027] Names and serial numbers of components in the figure: 1 - frame, 2 - electric wheel, 3 - nozzle, 4 - box body, 5 - return plate, 6 - dust filter bag, 7 - activated carbon plate, 8 - sealing plate, 9 - suction fan, 10 - suction pipe, 11 - mounting plate, 12 - water tank, 13 - air guide box, 14 - air outlet pipe, 15 - air outlet hole, 16 - opening, 17 - bottom plate, 18 - first mounting frame, 19 - first storage tank, 20 - first slurry pump, 21 - suction pipe, 22 - hard pipe, 23 - flexible pipe, 24 - first stirring rod, 25 - second mounting frame, 26 - second storage tank, 27 - feeding pipe, 28 - second stirring rod, 29 - motor, 30 - second slurry pump, 31 - feeding pipe, 32 - discharging pipe, 33 - sliding frame, 34 - return spring, 35 - baffle, 36 - roller, 37 - mounting shaft, 38 - winding wheel, 39 - scroll spring, 40 - pulling rope, 41 - connecting plate, 42 - push block, 43 - electric push rod, 44 - push plate, 45 - protective shell. Detailed implementation manners

[0028] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0029] As Figures 1 - 6As shown in the figure, a goaf filling device for low-carbon coal mining underground includes a frame 1, electric wheels 2, a spray pipe 3, a box body 4, a return plate 5, a dust filter bag 6, an activated carbon plate 7, a sealing plate 8, an air suction fan 9, an air suction pipe 10, a purification mechanism and a storage mechanism. Electric wheels 2 are symmetrically installed on the front and rear sides of the bottom of the frame 1. A spray pipe 3 is connected to the middle of the top of the frame 1. The rear part of the frame 1 is connected to the box body 4 by bolts. The left part of the box body 4 is slidably connected with a return plate 5. A dust filter bag 6 is connected to the right side of the return plate 5. The middle part of the box body 4 is slidably connected with an activated carbon plate 7. An access opening is provided on the front side of the box body 4. The return plate 5, the dust filter bag 6 and the activated carbon plate 7 can be taken out of the box body 4 through the access opening, so as to replace the return plate 5, the dust filter bag 6 and the activated carbon plate 7. A sealing plate 8 is jointly connected to the front sides of the return plate 5 and the activated carbon plate 7. The sealing plate 8 can seal the access opening to prevent harmful gases from leaking through the access opening. There is a handle on the front side of the sealing plate 8. Hold the handle and pull the sealing plate 8 forward to facilitate taking out the return plate 5, the dust filter bag 6 and the activated carbon plate 7. An air suction fan 9 is installed on the right part of the box body 4 by bolts. The left side of the box body 4 is communicated with an air suction pipe 10. The purification mechanism is used for secondary purification of the purified harmful gases. The storage mechanism is used for storing filling materials.

[0030] As Figures 1 - 4 shown, the purification mechanism includes a mounting plate 11, a water tank 12, a gas guide box 13 and an air outlet pipe 14. The lower part of the frame 1 is connected to the mounting plate 11 by bolts. The right side of the mounting plate 11 is connected to the water tank 12 by bolts. The right side of the box body 4 is communicated with the gas guide box 13. The right side of the gas guide box 13 is communicated with the air outlet pipe 14. The air outlet pipe 14 penetrates through the top of the water tank 12. Air outlet holes 15 are evenly spaced in the lower part of the air outlet pipe 14. The air outlet holes 15 are located inside the water tank 12. An opening 16 is provided in the upper right part of the water tank 12.

[0031] As Figure 1 , Figure 5 and Figure 6As shown, the material storage mechanism includes a bottom plate 17, a first mounting frame 18, a first storage tank 19, a first slurry pump 20, a suction pipe 21, a hard pipe 22, a flexible pipe 23 and a stirring assembly. The bottom plate 17 is installed on the ground at the filling construction site to facilitate adding filling materials into the second storage tank 26. On the right side of the top of the bottom plate 17, there is a first mounting frame 18 connected by bolts. On the upper part of the first mounting frame 18, there is a first storage tank 19 connected by bolts. On the right side of the top of the bottom plate 17, there is a first slurry pump 20 installed by bolts. The feeding end of the first slurry pump 20 is connected with a suction pipe 21. The upper end of the suction pipe 21 is connected to the middle of the bottom of the first storage tank 19, and the suction pipe 21 is communicated with the first storage tank 19. The lower part of the first storage tank 19 is conical, which can gather filling materials and facilitate the first slurry pump 20 to extract the filling materials at the lower part of the first storage tank 19. The discharging end of the first slurry pump 20 is connected with a hard pipe 22. The discharging end of the first slurry pump 20 and the hard pipe 22 are connected by a flange, which is convenient for disassembling the hard pipe 22. The lower end of the hard pipe 22 is connected with a flexible pipe 23. The flexible pipe 23 and the hard pipe 22 are connected by a flange, which is convenient for disassembling the hard pipe 22. The left end of the flexible pipe 23 is connected to the right end of the spray pipe 3. The stirring assembly is used to stir the raw materials of the filling materials.

[0032] As Figure 5 and Figure 6As shown in the figure, the stirring assembly includes a first stirring rod 24, a second mounting bracket 25, a second storage tank 26, a feeding pipe 27, a second stirring rod 28, a motor 29, a second slurry pump 30, a feeding pipe 31 and a discharging pipe 32. The first stirring rod 24 is rotatably connected inside the first storage tank 19, and the upper end of the first stirring rod 24 extends out from the top of the first storage tank 19. The left side of the top of the bottom plate 17 is bolted with a second mounting bracket 25, and the upper part of the second mounting bracket 25 is bolted with a second storage tank 26. The front side of the top of the second storage tank 26 is communicated with two feeding pipes 27, and the two feeding pipes 27 are symmetrically arranged left and right. The second stirring rod 28 is rotatably connected inside the second storage tank 26, and the upper end of the second stirring rod 28 extends out from the top of the second storage tank 26. The second stirring rod 28 and the first stirring rod 24 are driven by a pulley group. The middle of the top of the second storage tank 26 is bolted with a motor 29, and the output shaft of the motor 29 and the upper end of the second stirring rod 28 are connected by a coupling. The middle of the top of the bottom plate 17 is bolted with a second slurry pump 30. The feeding end of the second slurry pump 30 is connected with a feeding pipe 31, and the upper end of the feeding pipe 31 is connected to the middle of the bottom of the second storage tank 26, and the feeding pipe 31 is communicated with the second storage tank 26. The lower part of the second storage tank 26 is conical, which can gather the filling material and facilitate the second slurry pump 30 to extract the filling material at the lower part of the second storage tank 26. The discharging end of the second slurry pump 30 is connected with a discharging pipe 32, and the right end of the discharging pipe 32 is connected to the upper left part of the first storage tank 19, and the discharging pipe 32 is communicated with the first storage tank 19. The discharging pipe 32 is connected to the upper part of the first storage tank 19 to prevent the filling material in the first storage tank 19 from flowing back into the discharging pipe 32.

[0033] As Figures 7 - 9 shown, a blocking mechanism is further included. The blocking mechanism includes a sliding frame 33, a return spring 34, a baffle 35, a roller 36 and an extrusion assembly. The left side of the mounting plate 11 is slidably connected with a sliding frame 33. The front and rear parts of the sliding frame 33 are sleeved with return springs 34, and the two ends of the return spring 34 are respectively connected with the mounting plate 11 and the sliding frame 33. The return spring 34 is sleeved on the sliding frame 33 to prevent the return spring 34 from bending. The left side of the sliding frame 33 is connected with a baffle 35, and the bottom of the baffle 35 is rotatably connected with a roller 36. The extrusion assembly is used to push the baffle 35 to make the baffle 35 extrude the filling material filled into the goaf of the coal mine.

[0034] As Figure 8 and Figure 9As shown, the extrusion assembly includes a mounting shaft 37, a winding wheel 38, a volute spring 39, a pull rope 40, a connecting plate 41 and a pushing block 42. The middle of the bottom of the mounting plate 11 is connected with the mounting shaft 37. The winding wheel 38 is rotatably connected to the mounting shaft 37. The volute spring 39 is sleeved on the mounting shaft 37. The two ends of the volute spring 39 are respectively connected with the mounting shaft 37 and the winding wheel 38. The pull rope 40 is wound around the winding wheel 38. The lower part of the hard pipe 22 is connected with the connecting plate 41. The right end of the pull rope 40 is connected with the lower left side of the connecting plate 41. The pushing blocks 42 are circumferentially and evenly spaced on the winding wheel 38.

[0035] As Figure 10 shown, it further includes an electric push rod 43 and a pushing plate 44. The front and rear sides of the top of the mounting plate 11 are both bolted with the electric push rod 43. The left ends of the telescopic rods of the two electric push rods 43 are jointly connected with the pushing plate 44. The pushing plate 44 is located on the left side of the baffle 35. The electric push rod 43 is obliquely arranged and can drive the pushing plate 44 to move obliquely, so that the pushing plate 44 can push the filling material upward, stack the filling material upward, and make the filling material fill the mined-out area of the coal mine.

[0036] As Figure 5 shown, it further includes a protective shell 45. The top of the first storage tank 19 and the top of the second storage tank 26 are jointly bolted with the protective shell 45. The pulley group is located inside the protective shell 45. The protective shell 45 can protect the pulley group and prevent dust from falling on the pulley group.

[0037] The staff removed the hard pipe 22 from the discharge end of the first mud pump 20 and the hose 23, then passed the hard pipe 22 through the ground and extended it into the mine. Next, the frame 1 was placed into the mine, and then the hard pipe 22 was reinstalled on the discharge end of the first mud pump 20 and the hose 23. Subsequently, the staff poured water and potassium permanganate into the water tank 12 in a suitable proportion through the opening 16. The water covered the air holes 15 on the air outlet pipe 14, and the water and potassium permanganate were mixed into water that could purify harmful gases. The electric wheel 2 was controlled to drive the frame 1 to move leftward, moving the frame 1 to the gob area of the coal mine. The baffle 35 would also move leftward, and the roller 36 rolled on the ground to prevent the baffle 35 from rubbing against the ground. The connecting plate 41 would not move leftward, so the pull rope 40 would be released from the winding wheel 38, the winding wheel 38 would rotate, and the scroll spring 39 would deform. Then, the staff poured the raw materials of the filling material into the second storage tank 26 through the feeding pipe 27. The output shaft of the motor 29 drove the second stirring rod 28 to rotate, and the second stirring rod 28 stirred the raw materials of the filling material to mix them into the filling material. The second mud pump 30 pumped the filling material in the second storage tank 26 through the feeding pipe 31, and the filling material entered the first storage tank 19 through the discharge pipe 32. The first mud pump 20 pumped the filling material in the first storage tank 19 through the suction pipe 21, and the filling material was sprayed from the spray pipe 3 through the hard pipe 22 and the hose 23 onto the gob area of the coal mine to fill the gob area of the coal mine. The baffle 35 could block the filling material to prevent it from rolling onto the frame 1. At the same time, the electric wheel 2 was controlled to drive the frame 1 to move rightward, and the pull rope 40 was relaxed. Under the action of the scroll spring 39, the winding wheel 38 rotated in the reverse direction, and the winding wheel 38 drove the push block 42 to rotate. When the push block 42 rotated and contacted the sliding frame 33, the push block 42 pushed the sliding frame 33 to move leftward, and the return spring 34 was compressed. The sliding frame 33 drove the baffle 35 to move leftward, and the baffle 35 would squeeze the filling material. When the push block 42 rotated and separated from the sliding frame 33, under the action of the return spring 34, the sliding frame 33 moved rightward, and the sliding frame 33 drove the baffle 35 to move rightward. In this way, the baffle 35 could frequently squeeze the filling material, causing the filling material to vibrate, so that the filling material could be more dense and compact. Subsequently, the telescopic rod of the electric push rod 43 was controlled to extend, driving the push plate 44 to move leftward and upward. The push plate 44 could push the filling material upward to stack the filling material upward, enabling the filling material to fill the gob area of the coal mine better. At the same time, the suction fan 9 was started, and harmful gases were inhaled into the box body 4 through the suction pipe 10. The harmful gases would enter the dust filter bag 6, and the dust filter bag 6 could filter the dust in the harmful gases. The activated carbon plate 7 could purify the harmful gases to prevent the harmful gases from polluting the atmosphere and soil, so as to avoid the harmful gases from damaging the ecological environment. The purified harmful gases would be sprayed out from the air holes 15 through the air guide box 13 and the air outlet pipe 14 and sprayed into the water containing potassium permanganate.The water containing potassium permanganate can purify the harmful gases after purification, improving the purification effect. Moreover, the air outlets 15 are evenly spaced, which can disperse the purified harmful gases, enabling the purified harmful gases to come into full contact with the water containing potassium permanganate and further enhancing the purification effect. At the same time, the water containing potassium permanganate can weaken the wind force discharged by the suction fan 9, preventing excessive wind force from blowing up the dust in the mine, thereby avoiding the formation of dust. During the filling process, the raw materials of the next batch of filling materials can be poured into the second storage tank 26 for stirring to form filling materials. The second mud pump 30 sucks the filling materials in the second storage tank 26 into the first storage tank 19, continuously supplying the filling materials to ensure sufficient filling materials for filling the mined-out area of the coal mine. When the second stirring rod 28 rotates, it will drive the first stirring rod 24 to rotate through the pulley group. The first stirring rod 24 can stir the filling materials in the first storage tank 19 to prevent the filling materials in the first storage tank 19 from solidifying.,

[0038] The above are only examples of the present invention and are not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art of those skilled in the art.,

Claims

1. A low-carbon coal mining underground goaf filling device, comprising a frame (1), an electric wheel (2) and a nozzle (3), wherein the electric wheel (2) is installed at the bottom of the frame (1), and the nozzle (3) is connected to the top of the frame (1), wherein: The machine also comprises a box body (4), a circular plate (5), a dust filter bag (6), an activated carbon plate (7), a blocking plate (8), an air suction fan (9), an air suction pipe (10), a purification mechanism and a material storage mechanism. The frame (1) is connected to the box body (4), the circular plate (5) and the activated carbon plate (7) are slidably connected in the box body (4), the dust filter bag (6) is connected to the circular plate (5), and a removal outlet is provided on the box body (4), through which the circular plate (5), the dust filter bag (6) and the activated carbon plate (7) are taken out of the box body (4). The circular plate (5) and the activated carbon plate (7) are connected together with a blocking plate (8) for sealing the outlet, an air suction fan (9) is installed in the box body (4), and an air suction pipe (10) is connected to the box body (4). The air suction fan (9) sucks harmful gas into the box body (4) through the air suction pipe (10), the dust filter bag (6) filters dust in the harmful gas, the activated carbon plate (7) purifies the harmful gas, the purification mechanism is used to perform secondary purification on the purified harmful gas, and the material storage mechanism is used to store filling materials.

2. The underground goaf filling device for low-carbon mining of coal mines according to claim 1 is characterized by: The purification mechanism comprises a mounting plate (11), a water tank (12), an air guide box (13) and an air outlet pipe (14). The mounting plate (11) is connected to the frame (1), the mounting plate (11) is connected to the water tank (12), the box body (4) is connected to the air guide box (13), the air guide box (13) is connected to the air outlet pipe (14), the air outlet pipe (14) passes through the top of the water tank (12), the air outlet pipe (14) is provided with an air outlet hole (15), the air outlet hole (15) is located in the water tank (12), and the water tank (12) is provided with an opening (16) for adding water and potassium permanganate.

3. The underground goaf filling device for low-carbon mining of coal mines according to claim 2 is characterized by: The material storage mechanism comprises a base plate (17), a first mounting frame (18), a first material storage tank (19), a first mud pump (20), a suction pipe (21), a hard pipe (22), a hose (23) and a stirring assembly. The top of the base plate (17) is connected to the first mounting frame (18), the first material storage tank (19) for storing filling materials is connected to the first mounting frame (18), the first mud pump (20) is installed on the top of the base plate (17), the feeding end of the first mud pump (20) and the first material storage tank (19) are connected through the suction pipe (21), the discharge end of the first mud pump (20) is connected to the hard pipe (22), the lower end of the hard pipe (22) is connected to the hose (23), the hose (23) is connected to the nozzle (3), and the stirring assembly is used to stir the raw materials of the filling material.

4. The underground goaf filling device for low-carbon mining of coal mines according to claim 3 is characterized by: The stirring assembly comprises a first stirring rod (24), a second mounting frame (25), a second storage tank (26), a feeding pipe (27), a second stirring rod (28), a motor (29), a second mud pump (30), a feeding pipe (31) and a discharging pipe (32); the first stirring rod (24) for stirring the filling material is rotatably connected in the first storage tank (19); the second mounting frame (25) is connected to the top of the bottom plate (17); the second storage tank (26) is connected to the second mounting frame (25); the top of the second storage tank (26) is connected to the feeding pipe (27); the second storage tank (26) is rotatably connected to the second mounting frame (25); A second stirring rod (28) for stirring the raw materials of the filling material is connected, the second stirring rod (28) and the first stirring rod (24) are driven by a pulley group, a motor (29) is installed on the top of the second storage tank (26), the output shaft of the motor (29) is connected to the second stirring rod (28) to drive the second stirring rod (28) to rotate, and a second mud pump (30) is installed on the top of the bottom plate (17), the feed end of the second mud pump (30) is connected to the second storage tank (26) through a feed pipe (31), and the discharge end of the second mud pump (30) is connected to the first storage tank (19) through a discharge pipe (32).

5. The underground goaf filling device for low-carbon mining of coal mines according to claim 4 is characterized by: The invention also comprises a blocking mechanism, which comprises a sliding frame (33), a return spring (34), a baffle (35), a roller (36) and an extrusion assembly. The sliding frame (33) is slidably connected to the mounting plate (11), a return spring (34) is connected between the mounting plate (11) and the sliding frame (33), a baffle (35) for blocking the filling material filled into the coal mine goaf is connected to the sliding frame (33), the bottom of the baffle (35) is rotatably connected to the roller (36), and the extrusion assembly is used to push the baffle (35) so that the baffle (35) squeezes the filling material filled into the coal mine goaf.

6. The underground goaf filling device for low-carbon mining of coal mines according to claim 5 is characterized by: The extrusion assembly comprises a mounting shaft (37), a winding wheel (38), a volute spring (39), a pull rope (40), a connecting plate (41) and a push block (42). The mounting plate (11) is connected to the bottom of the mounting plate (37). The winding wheel (38) is rotatably connected to the mounting shaft (37). The volute spring (39) is connected between the mounting shaft (37) and the winding wheel (38). The pull rope (40) is wound around the winding wheel (38). The lower part of the hard pipe (22) is connected to the connecting plate (41). The pull rope (40) and the connecting plate (41) are connected. The winding wheel (38) is connected to a push block (42). The push block (42) is used to push the sliding frame (33) to move the baffle (35) so that the baffle (35) squeezes the filling material filled into the coal mine goaf.

7. The underground goaf filling device for low-carbon mining of coal mines according to claim 6 is characterized by: It also includes an electric push rod (43) and a push plate (44), wherein two electric push rods (43) are installed on the top of the mounting plate (11), and the push plate (44) is commonly connected to the telescopic rods of the two electric push rods (43).

8. The underground goaf filling device for low-carbon mining of coal mines according to claim 4 is characterized by: It also includes a protective shell (45), the top of the first material storage tank (19) and the top of the second material storage tank (26) are commonly connected to the protective shell (45) for protecting the belt pulley set, and the belt pulley set is located inside the protective shell (45).

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