Coal mine air shaft carbon dioxide recycling and sealing device and sealing method thereof

Abstract

The invention relates to the technical field of coal mines, in particular to a coal mine air shaft carbon dioxide recycling and sealing device and a sealing method thereof.The coal mine air shaft carbon dioxide recycling and sealing device comprises an air pump and a first conveying pipe, a recycling cover is fixedly installed at one end of the first conveying pipe, and a dust removal box is installed on one side of the air pump; a sealing tank is arranged on one side of the dust removal box, a compressor connected with the dust removal box is fixedly installed on one side of the sealing tank, a condenser connected with the sealing tank is fixedly installed on the top of the compressor, and a fixing structure is arranged on the recovery cover. Through the arrangement of the fixing structure, the recycling cover can be fixed to the air shaft opening, the first screw rod is rotated to drive the fastening plates to move in the first fixing frame, the two fastening plates get close to each other to clamp the air shaft opening so as to fix the recycling cover, and the situation that in the recycling process, the recycling cover shakes on the air shaft opening to generate a gap is avoided; and pollution and waste caused by leakage of carbon dioxide from gaps are effectively prevented.

Description

Technical Field

[0001] The invention relates to a coal mine ventilation shaft carbon dioxide recovery and sealing device, in particular to a coal mine ventilation shaft carbon dioxide recovery and sealing device and a sealing method thereof, belonging to the technical field of coal mines. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, people generally choose to dig tunnels underground to mine coal. This is an underground coal mine. The air shaft is a shaft specially used for ventilation in the mine. The shaft that takes in fresh air is called the air intake shaft; the shaft that discharges polluted air is called the air outlet shaft. The number of air shafts set up in each mine field is related to the ventilation system used and the layout of the air shafts. Each ventilation system must have at least one air intake shaft and one air outlet shaft.

[0003] In the coal mining industry, there is a large amount of carbon dioxide in the air flow of the coal mine ventilation shaft. Directly discharging it into the air not only causes serious pollution to the environment and aggravates the greenhouse effect, but also greatly wastes the utilization value of carbon dioxide and energy. Therefore, in order to avoid the waste of carbon dioxide, a carbon dioxide recovery device is usually used to recover and seal the carbon dioxide that drifts out of the coal mine ventilation shaft.

[0004] However, the existing carbon dioxide recovery device still has the following technical problems during use: the recovery hood on the recovery device used to extract carbon dioxide from the wind shaft has a simple structure and cannot be connected and fixed to the wind shaft mouth, so that a gap will be generated between the recovery hood and the wind shaft mouth during the recovery process, causing carbon dioxide to leak from the gap.

[0005] Therefore, there is an urgent need to improve a coal mine air shaft carbon dioxide recovery and storage device and a storage method thereof to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a coal mine air shaft carbon dioxide recovery and sealing device and a sealing method thereof. By setting a fixed structure, the recovery cover can be fixedly connected to the air shaft mouth to avoid the recovery cover shaking on the air shaft mouth during the recovery process to create gaps, thereby effectively preventing carbon dioxide from leaking from the gaps to cause pollution and waste.

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] A device for recovering and sealing carbon dioxide in a coal mine ventilation shaft comprises an air pump and a first conveying pipe, a recovery hood is fixedly installed on one end of the first conveying pipe, a dust removal box is installed on one side of the air pump, a plurality of filters are fixedly installed inside the dust removal box, a sealing tank is provided on one side of the dust removal box, a compressor connected to the dust removal box is fixedly installed on one side of the sealing tank, a condenser connected to the sealing tank is fixedly installed on the top of the compressor, a fixed structure is provided on the recovery hood, the fixed structure comprises a first fixed frame fixedly installed on the bottom of the recovery hood, two first screws connected by threads are symmetrically arranged on the first fixed frame, and two fastening plates movably connected to the first screws are symmetrically and slidably installed inside the first fixed frame.

[0009] Preferably, the first screw rod is provided with two telescopic rods fixedly mounted via a mounting block, a first electromagnet is fixedly mounted on the output end of the telescopic rod, and two second electromagnets used in conjunction with the first electromagnet are fixedly mounted on the surface of the first fixing frame.

[0010] Preferably, a fixing box is fixedly installed on the first conveying pipe, a regulating valve is arranged inside the fixing box, a second screw connected by threads is arranged on the top of the fixing box, and the bottom of the second screw is movably connected to the regulating valve.

[0011] Preferably, a plurality of fixing rods are fixedly mounted on one end of the first screw rod and the second screw rod, and a rotating disk connected to the plurality of fixing rods is provided on the first screw rod and the second screw rod, and the surface of the rotating disk is provided with anti-slip grooves.

[0012] Preferably, first hydraulic rods are fixedly mounted on both sides of the dust removal box, a support frame is fixedly mounted on the output end of the first hydraulic rod, and a cleaning brush connected to the support frame is fitted on the filter net.

[0013] Preferably, a leakage hole is provided on the dust removal box, a discharge valve installed on the dust removal box is provided below the leakage hole, a collecting box installed on the dust removal box is provided below the discharge valve, two slide grooves are symmetrically provided on the bottom of the dust removal box, sliders slidably connected to the slide grooves are fixedly installed on both sides of the collecting box, second fixed frames are fixedly installed on both sides of the collecting box, two first springs are fixedly installed inside the second fixed frame, a clamping rod slidably connected to the second fixed frame is fixedly installed on one end of the first spring, and a plurality of clamping frames that engage with the clamping rod are fixedly installed on the surface of the dust removal box.

[0014] Preferably, a second delivery pipe is fixedly installed on one side of the compressor, a third delivery pipe is fixedly installed on one side of the dust removal box, a first sleeve is fixedly installed on one end of the second delivery pipe, a plurality of fixed plates are symmetrically fixedly installed on the surface of the first sleeve, a second spring is fixedly installed on the fixed plate, a limiting rod is fixedly installed on one end of the second spring, a second sleeve used in conjunction with the first sleeve is fixedly installed on one end of the third delivery pipe, one end of the limiting rod passes through the fixed plate and the second spring and is engaged with the second sleeve, and a sealing ring that fits tightly with the inner wall of the first sleeve is fixedly installed on the second sleeve.

[0015] Preferably, a fixed platform is fixedly installed on the top of the sealing tank, a pressure gauge is fixedly installed on the top of the fixed platform, an alarm supported by multiple mounting frames is fixedly installed on the fixed platform, a second hydraulic rod is fixedly installed on the fixed platform, and a pressure block is fixedly installed on the top of the second hydraulic rod.

[0016] Preferably, support rods are fixedly installed on both sides of the sealing tank, and fixing frames are fixedly installed on the tops of the two support rods, and a plurality of warning signs are fixedly installed on the surfaces of the fixing frames.

[0017] Preferably, a method for sealing a carbon dioxide recovery and sealing device in a coal mine ventilation shaft is characterized by comprising the following steps:

[0018] S1. Place the recovery cover above the air well mouth, then rotate the first screw to drive the fastening plate to move in the first fixing frame, so that the two fastening plates are close to each other to clamp the air well mouth to fix the recovery cover, and after the recovery cover is fixed, start the air pump to extract and recover the carbon dioxide in the air well, and rotate the second screw to drive the regulating valve to rise and fall in the fixing box to control the flow rate of the extracted carbon dioxide;

[0019] S2. The air pump extracts the carbon dioxide and transports it to the dust removal box. The carbon dioxide enters the dust removal box and passes through multiple filters to filter the dust.

[0020] S3. The filtered carbon dioxide is transported to the compressor through the third delivery pipe and the second delivery pipe. The compressor compresses the carbon dioxide, and then condenses it through the condenser. Finally, the carbon dioxide is made into liquid and transported to the sealing tank for recovery and storage.

[0021] The present invention has at least the following beneficial effects:

[0022] By setting up the fixing structure, the recovery hood can be fixed on the wind shaft mouth, and the first screw is rotated to drive the fastening plate to move in the first fixing frame, so that the two fastening plates are close to each other to clamp the wind shaft mouth to fix the recovery hood, thereby avoiding the recovery hood from shaking on the wind shaft mouth and generating gaps during the recovery process, and effectively preventing carbon dioxide from leaking from the gaps to cause pollution and waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the first fixing frame structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the support frame structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the cleaning brush structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the collection box of the present invention;

[0029] Figure 6 For the present invention Figure 2 Enlarged view of point A in the middle;

[0030] Figure 7 For the present invention Figure 3 Enlarged view of point B in the middle;

[0031] Figure 8 For the present invention Figure 5 Enlarged view of center C.

[0032] In the figure, 1, air pump; 2, first delivery pipe; 3, recovery cover; 4, dust removal box; 5, filter screen; 6, sealing tank; 7, compressor; 8, condenser; 9, fixed structure; 10, first fixed frame; 11, first screw rod; 12, fastening plate; 13, telescopic rod; 14, first electromagnet; 15, second electromagnet; 16, fixed box; 17, regulating valve; 18, second screw; 19, fixed rod; 20, turntable; 21, first hydraulic rod; 22, support frame; 23, cleaning brush; 24, drain hole; 25, collecting box; 26, slide; 27, slider; 28, second fixed frame; 29, first spring; 30, clamping rod; 31, second conveying pipe; 32, third conveying pipe; 33, first sleeve; 34, fixing plate; 35, second spring; 36, limiting rod; 37, second sleeve; 38, sealing ring; 39, fixing table; 40, pressure gauge; 41, mounting frame; 42, alarm; 43, second hydraulic rod; 44, pressure block; 45, support rod; 46, fixing frame; 47, warning sign. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 8 As shown, this embodiment provides an embodiment of a coal mine air shaft carbon dioxide recovery and storage device and a storage method thereof.

[0035] In the present embodiment, a device for recovering and sealing carbon dioxide in a coal mine ventilation shaft includes an air pump 1 and a first conveying pipe 2, a recovery hood 3 is fixedly installed at one end of the first conveying pipe 2, a dust removal box 4 is installed on one side of the air pump 1, a plurality of filters 5 are fixedly installed inside the dust removal box 4, a sealing tank 6 is provided on one side of the dust removal box 4, a compressor 7 connected to the dust removal box 4 is fixedly installed on one side of the sealing tank 6, a condenser 8 connected to the sealing tank 6 is fixedly installed on the top of the compressor 7, a fixed structure 9 is provided on the recovery hood 3, the fixed structure 9 includes a first fixed frame 10 fixedly installed on the bottom of the recovery hood 3, two first screws 11 connected by threads are symmetrically arranged on the first fixed frame 10, and two fastening plates 12 movably connected to the first screw 11 are symmetrically and slidably installed inside the first fixed frame 10. By setting the fixing structure 9, the recovery hood 3 can be fixed on the wind shaft mouth, and the first screw 11 is rotated to drive the fastening plate 12 to move in the first fixing frame 10, so that the two fastening plates 12 are close to each other to clamp the wind shaft mouth to fix the recovery hood 3, thereby avoiding the recovery hood 3 from shaking on the wind shaft mouth during the recovery process to generate a gap, and effectively preventing carbon dioxide from leaking from the gap to cause pollution and waste.

[0036] In this embodiment, two telescopic rods 13 fixedly installed by mounting blocks are provided on the first screw 11, a first electromagnet 14 is fixedly installed on the output end of the telescopic rod 13, two second electromagnets 15 used in conjunction with the first electromagnet 14 are fixedly installed on the surface of the first fixed frame 10, a fixed box 16 is fixedly installed on the first conveying pipe 2, a regulating valve 17 is provided inside the fixed box 16, a second screw 18 connected by threads is provided on the top of the fixed box 16, the bottom of the second screw 18 is movably connected to the regulating valve 17, a plurality of fixed rods 19 are fixedly installed on one end of the first screw 11 and the second screw 18, a turntable 20 connected to the plurality of fixed rods 19 is provided on the first screw 11 and the second screw 18, and an anti-slip pattern is provided on the surface of the turntable 20. By setting the telescopic rod 13, the first electromagnet 14 and the second electromagnet 15, after the first screw 11 is rotated to clamp and fix the two fastening plates 12 on the wind well mouth, the output end of the telescopic rod 13 is pulled to extend and drive the first electromagnet 14 to move and fit with the second electromagnet 15. Under the electromagnetic adsorption of the first electromagnet 14 and the second electromagnet 15, the first screw 11 can be limited to prevent the first screw 11 from rotating due to collision, resulting in the clamping loosening of the fastening plate 12. By setting the fixing box 16, the regulating valve 17 and the second screw 18, the second screw 18 is rotated to drive the regulating valve 17 to rise and fall, so that the regulating valve 17 controls the conveying gap of the first conveying pipe 2, so as to adjust the flow rate of extraction and recovery. By setting the fixing rod 19 and the rotating disk 20, a rotating disk 20 is arranged on one end of the first screw 11 and the second screw 18, and the rotating disk 20 is also provided with anti-slip grooves, which can increase a certain friction force and make it easier to rotate when operating the first screw 11 and the second screw 18.

[0037] In this embodiment, first hydraulic rods 21 are fixedly installed on both sides of the dust removal box 4, a support frame 22 is fixedly installed on the output end of the first hydraulic rod 21, a cleaning brush 23 connected to the support frame 22 is fitted on the filter screen 5, a leakage hole 24 is provided on the dust removal box 4, a discharge valve installed on the dust removal box 4 is provided below the leakage hole 24, a collecting box 25 installed on the dust removal box 4 is provided below the discharge valve, two slide grooves 26 are symmetrically provided at the bottom of the dust removal box 4, sliders 27 slidably connected to the slide grooves 26 are fixedly installed on both sides of the collecting box 25, second fixed frames 28 are fixedly installed on both sides of the collecting box 25, two first springs 29 are fixedly installed inside the second fixed frame 28, and a card slidably connected to the second fixed frame 28 is fixedly installed on one end of the first spring 29 Rod 30, a plurality of card frames that engage with the card rod 30 are fixedly installed on the surface of the dust removal box 4, a second delivery pipe 31 is fixedly installed on one side of the compressor 7, a third delivery pipe 32 is fixedly installed on one side of the dust removal box 4, a first sleeve 33 is fixedly installed on one end of the second delivery pipe 31, a plurality of fixing plates 34 are symmetrically fixedly installed on the surface of the first sleeve 33, a second spring 35 is fixedly installed on the fixing plate 34, a limiting rod 36 is fixedly installed on one end of the second spring 35, a second sleeve 37 used in conjunction with the first sleeve 33 is fixedly installed on one end of the third delivery pipe 32, one end of the limiting rod 36 passes through the tube fixing plate 34 and engages with the second spring 35 and the second sleeve 37, and a sealing ring 38 that fits tightly with the inner wall of the first sleeve 33 is fixedly installed on the second sleeve 37. Through the arrangement of the first hydraulic rod 21, the support frame 22 and the cleaning brush 23, after the two first hydraulic rods 21 are started, their output ends are contracted to drive the support frame 22 to descend. The descent of the support frame 22 enables the cleaning brush 23 to descend and clean the dust accumulated on the filter screen 5, thereby playing a cleaning role, preventing the filter screen 5 from being blocked and affecting the dust removal effect and hindering the carbon dioxide delivery. Through the arrangement of the leakage hole 24, the collecting box 25, the chute 26, the slider 27, the second fixed frame 28, the first spring 29, the clamping rod 30 and the clamping frame, the dust treated by the cleaning brush 23 falls on the copper drum leakage hole 24 of the removal At the bottom of the dust box 4, open the discharge valve at the bottom of the dust removal box 4 to discharge the dust into the collection box 25 for centralized collection and treatment. The setting of the slide groove 26 and the slider 27 can support the collection box 25, and the sliding between the two can also reduce the friction between the collection box 25 and the dust removal box 4, making it convenient to pull the collection box 25 out. After the collection box 25 is installed on the dust removal box 4, the clamping rod 30 is engaged with the clamping frame under the elastic reset action of the first spring 29. After the engagement, the collection box 25 can be fixed, so that the collection box 25 can be stably placed in the dust removal box 4 to prevent it from falling off.

[0038] In this embodiment, a fixed platform 39 is fixedly installed on the top of the sealing tank 6, a pressure gauge 40 is fixedly installed on the top of the fixed platform 39, an alarm 42 supported by multiple mounting frames 41 is fixedly installed on the fixed platform 39, a second hydraulic rod 43 is fixedly installed on the fixed platform 39, a pressure block 44 is fixedly installed on the top of the second hydraulic rod 43, support rods 45 are fixedly installed on both sides of the sealing tank 6, fixed frames 46 are fixedly installed on the top of the two support rods 45, and multiple warning signs 47 are fixedly installed on the surface of the fixed frames 46. By setting up the fixed platform 39, the pressure gauge 40, the mounting frame 41, the alarm 42, the second hydraulic rod 43 and the pressure block 44, the pressure gauge 40 can be set to detect the pressure in the sealing tank 6. When the pressure in the sealing tank 6 reaches a peak value, since the pressure gauge 40 and the second hydraulic rod 43 are electrically connected, the pressure gauge 40 will control the second hydraulic rod 43 to start so that it drives the pressure block 44 to rise and touch the alarm 42 to alarm, so as to achieve the purpose of reminding the staff. By setting up the support rod 45, the fixed frame 46 and the warning sign 47, the warning signs 47 are set around the sealing tank 6 to serve as a reminder at night to avoid collisions.

[0039] In this embodiment, if Figure 1-Figure 8 As shown, the working process of a coal mine ventilation shaft carbon dioxide recovery and storage device and its storage method provided in this embodiment is as follows:

[0040] Step 1: Place the recovery cover 3 above the air well mouth, then rotate the first screw 11 to drive the fastening plate 12 to move in the first fixing frame 10, so that the two fastening plates 12 are close to each other to clamp the air well mouth to fix the recovery cover 3, after the recovery cover 3 is fixed, start the air pump 1 to extract and recover the carbon dioxide in the air well, rotate the second screw 18 to drive the regulating valve 17 to rise and fall in the fixing box 16 to control the flow rate of extracting carbon dioxide;

[0041] Step 2: The air pump 1 extracts the carbon dioxide and transports it to the dust removal box 4. The carbon dioxide enters the dust removal box 4 and passes through multiple filters 5 to filter the dust.

[0042] Step 3: The filtered carbon dioxide is transported to the compressor 7 through the third delivery pipe 32 and the second delivery pipe 31. The compressor 7 compresses the carbon dioxide, and then condenses it through the condenser 8. Finally, the carbon dioxide is made into liquid and transported to the sealing tank 6 for recycling and storage.

[0043] In summary, in this embodiment, according to a coal mine air shaft carbon dioxide recovery and storage device and its sealing method of this embodiment, through the arrangement of the telescopic rod 13, the first electromagnet 14 and the second electromagnet 15, after the first screw 11 is rotated to clamp and fix the two fastening plates 12 on the air shaft mouth, the output end of the telescopic rod 13 is pulled to extend it to drive the first electromagnet 14 to move and fit with the second electromagnet 15. Under the electromagnetic adsorption of the first electromagnet 14 and the second electromagnet 15, the first screw 11 can be limited to prevent the first screw 11 from being rotated due to collision and causing the fastening plate 12 to be loosened. Through the arrangement of the fixed box 16, the regulating valve 17 and the second screw 18, the second screw 18 is rotated to drive the regulating valve 17 to rise and fall, so that the regulating valve 17 can be adjusted. The throttle valve 17 controls the conveying gap of the first conveying pipe 2 to adjust the flow rate of extraction and recovery. The turntable 20 is arranged on one end of the first screw 11 and the second screw 18 through the arrangement of the fixed rod 19 and the turntable 20, and the turntable 20 is also provided with anti-skid patterns, which can increase a certain friction force and make it easier to rotate when operating the first screw 11 and the second screw 18. The first hydraulic rod 21, the support frame 22 and the cleaning brush 23 are arranged, and after the two first hydraulic rods 21 are started, the output ends of the two first hydraulic rods 21 are contracted to drive the support frame 22 to descend. The descent of the support frame 22 can make the cleaning brush 23 descend and clean the dust accumulated on the filter screen 5, thereby playing a cleaning role, preventing the filter screen 5 from being blocked to affect the dust removal effect and hinder the dioxygen The dust collected by the cleaning brush 23 falls from the leakage hole 24 to the bottom of the dust collecting box 4. The discharge valve at the bottom of the dust collecting box 4 is opened to discharge the dust into the collecting box 25 for centralized collection and treatment. The chute 26 and the slider 27 can support the collecting box 25, and the sliding between the two can also reduce the friction between the collecting box 25 and the dust collecting box 4, making it convenient to pull the collecting box 25 out. After the collecting box 25 is installed on the dust collecting box 4, the clamping rod 30 is engaged with the clamping frame under the elastic reset action of the first spring 29, and can be used to collect the dust collected by the cleaning brush 23. It is fixed so that the collection box 25 can be stably placed in the dust removal box 4 to prevent it from falling off. Through the setting of the fixing platform 39, the pressure gauge 40, the mounting frame 41, the alarm 42, the second hydraulic rod 43 and the pressure block 44, the pressure gauge 40 is set to detect the pressure in the sealing tank 6. When the pressure in the sealing tank 6 reaches the peak value, since the pressure gauge 40 and the second hydraulic rod 43 are electrically connected, the pressure gauge 40 will control the second hydraulic rod 43 to start and drive the pressure block 44 to rise to touch the alarm 42 to alarm, so as to achieve the purpose of reminding the staff. Through the setting of the support rod 45, the fixing frame 46 and the warning sign 47, the warning signs 47 are set around the sealing tank 6 to serve as a reminder at night to avoid collisions.

[0044] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0045] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0046] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A device for recovering and sealing carbon dioxide in a coal mine ventilation shaft, comprising an air pump (1) and a first delivery pipe (2), wherein a recovery cover (3) is fixedly installed at one end of the first delivery pipe (2), a dust removal box (4) is installed on one side of the air pump (1), a plurality of filter screens (5) are fixedly installed inside the dust removal box (4), a sealing tank (6) is arranged on one side of the dust removal box (4), a compressor (7) connected to the dust removal box (4) is fixedly installed on one side of the sealing tank (6), and a condenser (8) connected to the sealing tank (6) is fixedly installed on the top of the compressor (7), characterized in that: The recovery cover (3) is provided with a fixing structure (9), and the fixing structure (9) comprises a first fixing frame (10) fixedly mounted on the bottom of the recovery cover (3), and two first screw rods (11) connected by threads are symmetrically arranged on the first fixing frame (10), and two fastening plates (12) movably connected to the first screw rods (11) are symmetrically slidably mounted inside the first fixing frame (10).

2. A coal mine ventilation shaft carbon dioxide recovery and storage device according to claim 1, characterized in that: The first screw rod (11) is provided with two telescopic rods (13) fixedly mounted via mounting blocks, the output end of the telescopic rod (13) is fixedly mounted with a first electromagnet (14), and the surface of the first fixing frame (10) is fixedly mounted with two second electromagnets (15) for use in conjunction with the first electromagnet (14).

3. The device for recovering and storing carbon dioxide in a coal mine ventilation shaft according to claim 1, characterized in that: A fixed box (16) is fixedly mounted on the first conveying pipe (2), a regulating valve (17) is arranged inside the fixed box (16), a second screw rod (18) connected by a thread is arranged on the top of the fixed box (16), and the bottom of the second screw rod (18) is movably connected to the regulating valve (17).

4. A coal mine ventilation shaft carbon dioxide recovery and storage device according to claim 3, characterized in that: A plurality of fixing rods (19) are fixedly mounted on one end of the first screw rod (11) and the second screw rod (18); a rotating disk (20) connected to the plurality of fixing rods (19) is disposed on the first screw rod (11) and the second screw rod (18); and a surface of the rotating disk (20) is provided with anti-slip grooves.

5. The device for recovering and storing carbon dioxide in a coal mine ventilation shaft according to claim 1, characterized in that: A first hydraulic rod (21) is fixedly mounted on both sides of the dust removal box (4); a support frame (22) is fixedly mounted on the output end of the first hydraulic rod (21); and a cleaning brush (23) connected to the support frame (22) is fitted on the filter screen (5).

6. The device for recovering and storing carbon dioxide in a coal mine ventilation shaft according to claim 1, characterized in that: The dust removal box (4) is provided with a leakage hole (24), a discharge valve installed on the dust removal box (4) is arranged below the leakage hole (24), and a collection box (25) installed on the dust removal box (4) is arranged below the discharge valve. Two slide grooves (26) are symmetrically arranged at the bottom of the dust removal box (4), and sliders (27) slidably connected to the slide grooves (26) are fixedly installed on both sides of the collection box (25). Second fixed frames (28) are fixedly installed on both sides of the collection box (25), and two first springs (29) are fixedly installed inside the second fixed frame (28). A clamping rod (30) slidably connected to the second fixed frame (28) is fixedly installed at one end of the first spring (29), and a plurality of clamping frames that engage with the clamping rod (30) are fixedly installed on the surface of the dust removal box (4).

7. The device for recovering and storing carbon dioxide in a coal mine ventilation shaft according to claim 1, characterized in that: A second delivery pipe (31) is fixedly mounted on one side of the compressor (7), a third delivery pipe (32) is fixedly mounted on one side of the dust removal box (4), a first sleeve (33) is fixedly mounted on one end of the second delivery pipe (31), a plurality of fixed plates (34) are symmetrically fixedly mounted on the surface of the first sleeve (33), a second spring (35) is fixedly mounted on the fixed plate (34), a limiting rod (36) is fixedly mounted on one end of the second spring (35), a second sleeve (37) used in conjunction with the first sleeve (33) is fixedly mounted on one end of the third delivery pipe (32), one end of the limiting rod (36) passes through the fixed plate (34) and is engaged with the second spring (35) and the second sleeve (37), and a sealing ring (38) tightly fitted with the inner wall of the first sleeve (33) is fixedly mounted on the second sleeve (37).

8. The device for recovering and storing carbon dioxide in a coal mine ventilation shaft according to claim 1, characterized in that: A fixed platform (39) is fixedly mounted on the top of the sealing tank (6), a pressure gauge (40) is fixedly mounted on the top of the fixed platform (39), an alarm (42) mounted and supported by a plurality of mounting frames (41) is fixedly mounted on the fixed platform (39), a second hydraulic rod (43) is fixedly mounted on the fixed platform (39), and a pressure block (44) is fixedly mounted on the top of the second hydraulic rod (43).

9. The device for recovering and storing carbon dioxide in a coal mine ventilation shaft according to claim 1, characterized in that: Support rods (45) are fixedly mounted on both sides of the sealing tank (6), and fixing frames (46) are fixedly mounted on the tops of the two support rods (45), and a plurality of warning signs (47) are fixedly mounted on the surfaces of the fixing frames (46).

10. The method for storing carbon dioxide recovery and storage device in a coal mine ventilation shaft according to claim 1, characterized in that: The following steps are involved: S1. Place the recovery cover (3) above the air well mouth, then rotate the first screw (11) to drive the fastening plate (12) to move in the first fixing frame (10), so that the two fastening plates (12) are close to each other to clamp the air well mouth to fix the recovery cover (3), after the recovery cover (3) is fixed, start the air pump (1) to extract and recover the carbon dioxide in the air well, rotate the second screw (18) to drive the regulating valve (17) to rise and fall in the fixing box (16), so as to control the flow rate of the extracted carbon dioxide; S2, the air pump (1) extracts the carbon dioxide and transports it to the dust removal box (4), and the carbon dioxide enters the dust removal box (4) and passes through a plurality of filters (5) to filter the dust; S3. The filtered carbon dioxide is transported to the compressor (7) through the third transport pipe (32) and the second transport pipe (31). The compressor (7) compresses the carbon dioxide, and then condenses it through the condenser (8). Finally, the carbon dioxide is converted into liquid and transported to the sealing tank (6) for recovery and storage.

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