Methane enrichment device for coal mine windblown gas

Abstract

The invention relates to the technical field of coal mine air-exhausted gas emission reduction and utilization, in particular to a coal mine air-exhausted gas methane enrichment device which comprises an adsorption pipe, the outer wall of the adsorption pipe is fixedly connected with a connecting frame, the left side of the adsorption pipe is fixedly connected with a distribution pipe, and the right side of the adsorption pipe is fixedly connected with an outlet distribution pipe. The top and the bottom of the outer wall of the distribution pipe are fixedly connected with a desorption gas inlet pipeline and a windblown gas inlet pipeline respectively, and the top and the bottom of the outer wall of the outlet distribution pipe are fixedly connected with a concentrated gas outlet pipeline and a clean tail gas outlet pipeline respectively; by arranging the adsorption pipes, the connecting frame, the distribution pipe, the windblown gas inlet pipeline, the desorbed gas inlet pipeline, the outlet distribution pipe, the concentrated gas outlet pipeline and the clean tail gas outlet pipeline, efficient enrichment of methane in the windblown gas of the coal mine is achieved, and the methane in the windblown gas of the coal mine is enriched through a series of mechanical structure designs and operation mechanisms. The methane adsorption efficiency is improved, and stable operation and long service life of the device are ensured.

Description

Technical Field

[0001] This invention relates to the field of coal mine ventilation and gas emission reduction and utilization technology, and more specifically, to a methane enrichment device for coal mine ventilation and gas. Background Technology

[0002] Methane gas released during coal mining refers to the gas released from coal seams. The main component of this gas is methane, a clean energy source, but it is also highly flammable and explosive. If not treated promptly, it poses a serious threat to coal mine safety. Traditionally, these gases are directly released into the atmosphere during coal mining, wasting resources and exacerbating the greenhouse effect. Therefore, this invention proposes a methane enrichment device for coal mine methane gas extraction, aiming to effectively collect and utilize these gases, achieving the dual goals of maximizing resource utilization and protecting the environment.

[0003] According to patent document CN109126380B, a coal mine gas enrichment device and method with exhaust-end air pressurization is disclosed. The coal mine gas enrichment device includes a blower, an inlet buffer tank, an inlet control valve, a vacuum control valve, a displacement control valve, an exhaust control valve, a pressure equalization control valve, an adsorption tower, an air pressurization control valve, an air pressurization filter, a vacuum pump, a product gas slow-filling tank, and a displacement reflux valve. The enrichment method of the coal mine gas enrichment device with exhaust-end air pressurization includes six steps: adsorption, displacement, pressure equalization, vacuuming, pressure equalization and pressurization, and air pressurization. Air is used to pressurize the adsorption tower from its exhaust end during the pressurization process. This invention adds a reverse air pressurization step at the exhaust end of the coal mine gas enrichment device, which can delay the breakthrough time of the adsorption tower and avoid methane residue at the adsorption tower outlet after pressurization, thereby improving the methane concentration and recovery rate of the product gas.

[0004] Currently, no effective emission reduction technology has been developed for ventilation exhaust gas with high methane concentrations. Although thermal oxidation technology can destroy methane in ventilation exhaust gas, it requires additional energy consumption during the destruction process, making it unfeasible from an economic point of view. In addition, thermal oxidation technology increases carbon emissions while consuming additional energy, which runs counter to the current global carbon reduction goals and therefore cannot achieve the expected carbon reduction effect. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, the present invention provides a methane enrichment device for coal mine ventilation gas. The technical problem to be solved by the present invention is that no effective emission reduction technology has been developed for ventilation gas with high methane concentration. Although thermal oxidation technology can destroy methane in ventilation gas, it requires additional energy consumption during the destruction process, which makes it not feasible from an economic point of view. In addition, thermal oxidation technology will increase carbon emissions while consuming additional energy, which runs counter to the current global carbon emission reduction goals and therefore cannot achieve the expected carbon emission reduction effect.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A methane enrichment device for coal mine ventilation and gas drainage includes an adsorption tube, a connecting frame fixedly connected to the outer wall of the adsorption tube, a distribution pipe fixedly connected to the left side of the adsorption tube, an outlet distribution pipe fixedly connected to the right side of the adsorption tube, a desorbed gas inlet pipe and a ventilation and gas drainage inlet pipe fixedly connected to the top and bottom of the outer wall of the distribution pipe, respectively, and a concentrated gas outlet pipe and a clean tail gas outlet pipe fixedly connected to the top and bottom of the outer wall of the outlet distribution pipe, respectively. The adsorption tube includes an adsorption tube body, an adsorption chamber fixedly connected to the middle of the inner wall of the adsorption tube body, and distribution discs fixedly connected to both the left and right sides of the inner wall of the adsorption tube body. A columnar rotating rod is provided in the middle of the inner wall of the adsorption tube body and the two distribution discs. The left end of the columnar rotating rod extends to the outside of the left distribution disc and is fixedly connected to a motor. The bottom of the motor is fixedly connected to the top left side of the connecting frame. Multiple adsorption plates are fixedly connected to the inner wall of the adsorption chamber, and the middle of the multiple adsorption plates is sleeved on the outer wall of the columnar rotating rod.

[0007] As a further embodiment of the present invention: both dispensing discs include an adsorption disc body, the outer walls of both adsorption disc bodies are fixedly connected to the left and right sides of the inner wall of the adsorption tube body, the middle part of both adsorption disc bodies is hollowed out, the middle part of the inner side of both adsorption disc bodies is fixedly connected to a connecting tube, the inner end of both connecting tubes is fixedly connected to a gear, and the middle part of both gears is hollowed out.

[0008] As a further aspect of the present invention: control tubes are provided on the inner sides of the two adsorption disk bodies, and the outer walls of the two control tubes are fixedly connected with collars in a ring array. The inner walls of the two sets of collars are fixedly connected with ventilation gas isolation pipes. The sides of the two adsorption disk bodies that are aligned with the two sets of ventilation gas isolation pipes are hollowed out. The inner walls of the two connecting pipes and gears are fitted on both sides of the outer wall of the columnar rotating rod. The middle part of the inner wall of the two control tubes is fixedly connected to both sides of the outer wall of the columnar rotating rod inside the adsorption disk body.

[0009] As a further embodiment of the present invention: both sets of ventilation gas isolation pipes include isolation pipe shells, and the inner side of the outer wall of the outer wall of both sets of isolation pipe shells is provided with columnar rotating block connecting grooves. The inner wall of the columnar rotating block connecting grooves provided on the outer wall of the outer wall of both sets of isolation pipe shells is rotatably connected with columnar rotating blocks. The outer wall of both sets of columnar rotating blocks is fixedly connected with second gears. One side of both sets of second gears is fixedly connected with a transmission disc. The outer wall of both sets of transmission discs is fitted with a track. The inner wall of both sets of second gears meshes with the outer walls of the two gears on multiple sides.

[0010] As a further aspect of the present invention: the inner walls of the two sets of tracks on the side away from the transmission discs extend to the middle of the inner walls of the two sets of isolation tube shells and are each fitted with a second transmission disc; the inner walls of the two sets of second transmission discs are fixedly connected with columnar horizontal rotating rods; and the left and right sides of the inner walls of the two sets of isolation tube shells are fixedly connected with isolation components.

[0011] As a further aspect of the present invention: each of the multiple sets of isolation components includes a rotating disk columnar connecting rod, the inner end of each of the multiple sets of rotating disk columnar connecting rods is rotatably connected to a rotating disk, the outer side of each of the multiple sets of rotating disks is fixedly connected to a connecting block in a circular array, the outer end of each of the multiple sets of rotating disks is fixedly connected to the left and right ends of two sets of columnar horizontal rotating rods, the outer end of each of the multiple sets of connecting blocks is fixedly connected to a rotating plate, the middle part of the inner wall of each of the multiple sets of rotating plates is sleeved on the outer wall of each of the multiple sets of rotating disk columnar connecting rods, the outer wall of each of the multiple sets of rotating plates is fixedly connected to a rectangular plate in a circular array, the inner side of each of the multiple sets of rectangular plates is fixedly connected to a columnar blocking member connecting plate, and the outer wall of each of the multiple sets of columnar blocking member connecting plates is fixedly connected to a columnar blocking member.

[0012] As a further aspect of the present invention: the outer ends of the multiple sets of rotating disc columnar connecting rods are all fixedly connected to connecting discs, and the outer walls of the multiple sets of rotating disc columnar connecting rods are all fixedly connected to a third gear on one side of the inner side of the connecting disc and the columnar blocking member connecting plate. The outer sides of the multiple sets of connecting discs are all fixedly connected to the left and right sides of the inner walls of the two sets of isolation tube shells, and the side of the multiple sets of connecting discs near the third gear is fixedly connected to a dust wiping disc in a circular array.

[0013] As a further aspect of the present invention: a columnar transmission crossbar is rotatably connected to the outer side of the multiple sets of rectangular plates near the columnar connecting rod of the rotating disk, and a fourth gear is fixedly connected to the outer end of each set of columnar transmission crossbars.

[0014] As a further aspect of the present invention: a drive shaft is fixedly connected to the outer wall of each of the multiple sets of columnar drive crossbars; a second track is fitted onto the outer wall of each of the multiple sets of drive shafts; a second drive shaft is fitted onto the side of each of the multiple sets of second tracks away from the drive shaft; a columnar rotating crossbar is fixedly connected to the inner wall of each of the multiple sets of second drive shafts; the inner ends of each of the multiple sets of columnar rotating crossbars are rotatably connected to the outer side of each of the multiple sets of rectangular plates; a circular rotating block is fixedly connected to the outer end of each of the multiple sets of columnar rotating crossbars; and a gas exhaust barrier plate is fixedly connected to the outer wall of each of the multiple sets of circular rotating blocks.

[0015] As a further aspect of the present invention: the two sets of ventilation gas barrier plates and the outer side of the two sets of columnar barrier members set on the left and right sides of the two sets of isolation pipe shells and the two sets of isolation members on the inner side of the isolation pipe shells are all hollowed out.

[0016] The beneficial effects of this invention are as follows: This invention achieves highly efficient methane enrichment from coal mine ventilation exhaust gas by incorporating an adsorption tube, connecting frame, distribution pipe, ventilation exhaust gas inlet pipe, desorbed gas inlet pipe, outlet distribution pipe, concentrated gas outlet pipe, and clean tail gas outlet pipe. Through a series of mechanical structural designs and operating mechanisms, it not only improves the methane adsorption efficiency but also ensures stable operation and a long service life. The innovation of this device lies in the use of a motor-driven columnar rotating rod to drive multiple components to work collaboratively, achieving intermittent blocking of ventilation exhaust gas entering the adsorption chamber. This prolongs the residence time of methane molecules on the adsorption plate, improving the enrichment effect. At the same time, the dust removal disc effectively removes impurities and dust from the ventilation exhaust gas barrier plate, ensuring the cleanliness and efficient operation of the device. Furthermore, the device has self-cleaning capabilities and a long service life, providing a new solution for methane enrichment from coal mine ventilation exhaust gas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the adsorption tube of the present invention; Figure 4 This is a schematic diagram of the three-dimensional inner wall cross-section of the adsorption tube of the present invention; Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the adsorption tube of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the distribution disk of the present invention; Figure 7 This is a three-dimensional structural diagram of the distribution disk portion of the present invention; Figure 8 This is a three-dimensional cross-sectional view of the ventilation gas isolation pipe of the present invention; Figure 9 This is a three-dimensional structural diagram of the isolation component of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Adsorption tube; 11. Adsorption tube body; 12. Adsorption chamber; 13. Distribution plate; 131. Adsorption plate body; 132. Connecting pipe; 133. Gear; 134. Ventilation and gas isolation pipe; 1341. Isolation pipe shell; 1342. Columnar rotating block connecting groove; 1343. Columnar rotating block; 1344. Second gear; 1345. Transmission plate; 1346. Track; 1347. Second transmission plate; 1348. Columnar horizontal rotating rod; 1349. Isolation component; 13491. Rotary disk columnar connecting rod; 13492. Rotary disk; 13493. Connecting block; 13494. Rotating plate; 13495. Rectangular plate; 13496. Columnar blocking component connecting plate; 13497. 13498. Columnar blocking component; 13499. Third gear; 13499. Connecting disc; 13410. Columnar transmission crossbar; 13411. Fourth gear; 13412. Drive shaft; 13413. Second track; 13414. Second drive shaft; 13415. Columnar rotating crossbar; 13416. Circular rotating block; 13417. Ventilation gas barrier plate; 13418. Dust wiping disc; 135. Control tube control turntable; 136. Collar; 14. Columnar rotating rod; 15. Motor; 16. Adsorption plate; 2. Connecting frame; 3. Distribution pipe; 4. Desorbed gas inlet pipe; 5. Ventilation gas inlet pipe; 6. Outlet distribution pipe; 7. Concentrated gas outlet pipe; 8. Clean exhaust gas outlet pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, the present invention provides a methane enrichment device for coal mine ventilation and gas extraction, including an adsorption tube 1, a connecting frame 2 fixedly connected to the outer wall of the adsorption tube 1, a distribution pipe 3 fixedly connected to the left side of the adsorption tube 1, an outlet distribution pipe 6 fixedly connected to the right side of the adsorption tube 1, a desorption gas inlet pipe 4 and a ventilation and gas extraction inlet pipe 5 fixedly connected to the top and bottom of the outer wall of the distribution pipe 3, respectively, and a concentrated gas outlet pipe 7 and a clean tail gas outlet pipe 8 fixedly connected to the top and bottom of the outer wall of the outlet distribution pipe 6, respectively.

[0021] like Figure 2-10As shown, the adsorption tube 1 includes an adsorption tube body 11. An adsorption chamber 12 is fixedly connected to the middle of the inner wall of the adsorption tube body 11. Distribution discs 13 are fixedly connected to both the left and right sides of the inner wall of the adsorption tube body 11. A columnar rotating rod 14 is provided in the middle of the inner wall of the adsorption tube body 11 and the two distribution discs 13. The left end of the columnar rotating rod 14 extends to the outside of the left distribution disc 13 and is fixedly connected to a motor 15. The bottom of the motor 15 is fixedly connected to the top left side of the connecting frame 2. Multiple adsorption plates 16 are fixedly connected to the inner wall of the adsorption chamber 12. The middle of the multiple adsorption plates 16 is sleeved on the outer wall of the columnar rotating rod 14. Each of the two distribution discs 13 includes an adsorption disc body 131. The outer walls of the two adsorption disc bodies 131 are fixedly connected to the left and right sides of the inner wall of the adsorption tube body 11. Both adsorption plate bodies 131 have a hollowed-out design in the middle. A connecting tube 132 is fixedly connected to the middle of the inner side of each adsorption plate body 131. A gear 133 is fixedly connected to the inner end of each connecting tube 132. The middle of each gear 133 is hollowed out. A control tube control disc 135 is provided on the inner side of each adsorption plate body 131. A collar 136 is fixedly connected in a circular array to the outer wall of each control tube control disc 135. A ventilation gas isolation pipe 134 is fixedly connected to the inner wall of each of the two sets of collars 136. The side of each adsorption plate body 131 aligned with the two sets of ventilation gas isolation pipes 134 has a hollowed-out design. The inner walls of the two connecting tubes 132 and gears 133 are fitted onto both sides of the outer wall of the columnar rotating rod 14. Two control tubes... The inner wall of the turntable 135 is fixedly connected to both sides of the outer wall of the columnar rotating rod 14 inside the adsorption plate body 131. Both sets of ventilation gas isolation pipes 134 include isolation pipe shells 1341. The inner side of the outer wall of the outer wall of the two sets of isolation pipe shells 1341 is provided with columnar rotating block connecting grooves 1342. The inner wall of the columnar rotating block connecting grooves 1342 provided on the outer wall of the outer wall of the two sets of isolation pipe shells 1341 is rotatably connected to columnar rotating blocks 1343. The outer wall of the two sets of columnar rotating blocks 1343 is fixedly connected to second gears 1344. One side of the two sets of second gears 1344 is fixedly connected to a transmission disc 1345. The outer wall of the two sets of transmission discs 1345 is fitted with tracks 1346. The inner wall of the two sets of second gears 1344 meshes with the outer walls of the two gears 133 on multiple sides. In this configuration, the inner walls of both sets of tracks 1346, on the side furthest from the transmission disc 1345, extend to the middle of the inner walls of both sets of isolation tube housings 1341 and are each fitted with a second transmission disc 1347. The inner walls of both sets of second transmission discs 1347 are fixedly connected to columnar transverse rotating rods 1348. Isolation components 1349 are fixedly connected to the left and right sides of the inner walls of both sets of isolation tube housings 1341. Multiple isolation components 1349 each include rotating disc columnar connecting rods 13491. The inner ends of multiple sets of rotating disc columnar connecting rods 13491 are rotatably connected to rotating discs 13492. The outer sides of multiple sets of rotating discs 13492 are fixedly connected to connecting blocks 13493 in a circular array. The outer ends of multiple sets of rotating discs 13492 are fixedly connected to the left and right ends of the two sets of columnar transverse rotating rods 1348.Multiple sets of connecting blocks 13493 are fixedly connected to the outer ends of rotating plates 13494. The inner walls of multiple sets of rotating plates 13494 are all fitted onto the outer walls of multiple sets of rotating disk columnar connecting rods 13491. Rectangular plates 13495 are fixedly connected to the outer walls of multiple sets of rotating plates 13494 in a circular array. Columnar blocking connecting plates 13496 are fixedly connected to the inner sides of multiple sets of rectangular plates 13495. Columnar blocking components 13497 are fixedly connected to the outer walls of multiple sets of columnar blocking connecting plates 13496. The outer ends of multiple sets of rotating disk columnar connecting rods 13491 are all fixedly connected to the outer ends of the rotating disk columnar connecting rods 13491. A connecting disc 13499 is fixedly connected to the outer wall of multiple sets of rotating disc columnar connecting rods 13491. A third gear 13498 is fixedly connected to one side of the outer wall of the connecting disc 13499 and the columnar blocking member connecting plate 13496. The outer sides of the multiple sets of connecting discs 13499 are fixedly connected to the left and right sides of the inner walls of the two sets of isolation tube shells 1341. A dust-wiping disc 13418 is fixedly connected in a circular array to the side of the multiple sets of connecting discs 13499 near the third gear 13498. The outer sides of multiple sets of rectangular plates 13495 are near the rotating disc columnar connecting rods 13496. 491 is rotatably connected to one side of a columnar transmission crossbar 13410. A fourth gear 13411 is fixedly connected to the outer end of each set of columnar transmission crossbars 13410. A transmission shaft 13412 is fixedly connected to the outer wall of each set of columnar transmission crossbars 13410. A second track 13413 is fitted onto the outer wall of each set of transmission shafts 13412. A second transmission shaft 13414 is fitted onto the side of each set of second tracks 13413 away from the transmission shaft 13412. A columnar rotating crossbar 13415 is fixedly connected to the inner wall of each set of second transmission shafts 13414. The inner ends of multiple sets of columnar rotating crossbars 13415 are rotatably connected to the outer sides of multiple sets of rectangular plates 13495. Circular rotating blocks 13416 are fixedly connected to the outer ends of each set of columnar rotating crossbars 13415. Ventilation gas barrier plates 13417 are fixedly connected to the outer walls of each set of circular rotating blocks 13416. The left and right sides of the two sets of isolation pipe shells 1341 and the two sets of ventilation gas barrier plates 13417 and one side of the outer side of the two sets of columnar barrier plates 13497 on the inner side of the isolation pipe shells 1341 are all designed with openwork. When methane needs to be enriched in the exhaust gas, the exhaust gas first enters the inner wall of the distribution pipe 3 through the exhaust gas inlet pipe 5. At this time, the methane molecules in the exhaust gas will be adsorbed by multiple adsorption plates 16 in the adsorption chamber 12, and the clean exhaust gas will be discharged through the clean exhaust gas outlet pipe 8. In order to enrich methane, the motor 15 starts and drives the columnar rotating rod 14 to rotate. The rotation of the columnar rotating rod 14 will drive the two control pipes to control the rotating disk 135 to rotate synchronously, which in turn drives the collar 136 and the control pipe to control the rotating disk 135 to rotate synchronously. Since the second gear 1344 on the inner side of the rotating disk 135 controlled by the two sets of control pipes meshes with the two gears 133 on multiple sides, the two second gears 1344 will drive the two sets of transmission disks 134. 5. The two sets of tracks 1346 rotate synchronously, thereby driving the two sets of second transmission discs 1347 and two sets of columnar transverse rotating rods 1348 to rotate. As the columnar transverse rotating rods 1348 rotate, multiple sets of rotating discs 13492 will make circular motions within the outer wall of the columnar connecting rods 13491 and the outer shell of the isolation tube 1341. At the same time, the rotation of multiple sets of rotating discs 13492 will drive the rotating plate 13494 to rotate through the connecting block 13493. The rotation of the rotating plate 13494 will drive the multiple rectangular plates 13495 on the outer wall to rotate. At this time, the fourth gear 13411 and the third gear 13498 at the outer end of the columnar transmission crossbar 13410 on one side of the rectangular plate 13495 mesh, so that the multiple sets of columnar transmission crossbars 13410 rotate in multiple sets of rotating discs 13492. The outer wall of the rotary columnar connecting rod 13491 can also rotate when it makes a circular motion. The rotation of the columnar transmission crossbar 13410 drives the rotation of the transmission shaft 13412 and the second track 13413 sleeved on it. The rotation of the second track 13413 further drives the rotation of the second transmission shaft 13414 and the columnar rotating crossbar 13415. As the columnar rotating crossbar 13415 rotates, the circular rotating block 13416 and the ventilation gas barrier plate 13417 fixed on it begin to make a circular motion. This opening and closing action can intermittently block the ventilation gas from entering the inner wall of the isolation pipe shell 1341, thereby increasing the residence time of methane molecules in the ventilation gas on the multiple adsorption plates 16 in the adsorption chamber 12, thus improving the efficiency of ventilation gas. The methane adsorption efficiency is improved. Simultaneously, due to the columnar blocking element 13497, when the exhaust gas baffle plate 13417 rotates to the position of the columnar blocking element 13497, the columnar blocking element 13497 blocks the previous position of the exhaust gas baffle plate 13417, thus achieving precise control of the opening and closing action of the exhaust gas baffle plate 13417. As the motor 15 continues to operate, methane molecules in the adsorption chamber 12 are gradually enriched. Furthermore, when the exhaust gas baffle plate 13417 rotates to the inside of the dust wiping disc 13418, the dust wiping disc 13418 wipes the outer wall of the exhaust gas baffle plate 13417, effectively removing impurities and dust adhering to the exhaust gas baffle plate 13417.The gas exhaust baffle 13417 ensures that methane can smoothly pass through it and enter the inner wall of the adsorption chamber 12, maintaining the efficient operation of the device. The dust removal disc 13418 is made of wear-resistant and soft material, which can effectively remove impurities without damaging the gas exhaust baffle 13417, further improving the methane enrichment efficiency. This design not only enhances the self-cleaning ability of the device but also extends its service life. The clean exhaust gas after methane adsorption will be smoothly discharged through the clean exhaust gas outlet pipe 8. After a period of enrichment, when the methane molecules on the adsorption plate 16 reach a certain saturation, 10% to 12% of the total amount of exhaust gas can be introduced into the distribution pipe 3 through the desorption gas inlet pipe 4 and heated to about 300°C as the desorption gas. The desorption gas will desorb the methane molecules adsorbed on the adsorption plate 16 and discharge them through the concentrated gas outlet pipe 7. At this point, the enrichment process is complete, and the device can continue to the next enrichment cycle.

[0022] Working principle of this invention: When it is necessary to enrich methane in the exhaust gas, the exhaust gas first enters the inner wall of the distribution pipe 3 through the exhaust gas inlet pipe 5. At this time, the methane molecules in the exhaust gas will be adsorbed by multiple adsorption plates 16 in the adsorption chamber 12, and the clean exhaust gas will be discharged through the clean exhaust gas outlet pipe 8. In order to enrich methane, the motor 15 starts and drives the columnar rotating rod 14 to rotate. The rotation of the columnar rotating rod 14 will drive the two control pipes to control the rotating disk 135 to rotate synchronously, which in turn drives the collar 136 and the control pipe to control the rotating disk 135 to rotate synchronously. The two second gears 1344 will drive the two sets of transmission disks 1345 and the two sets of tracks 1346 to rotate synchronously, which in turn drives the two sets of second transmission disks 1347 and the two sets of columnar horizontal rotating rods 1347. As the columnar horizontal rotating rod 1348 rotates, multiple sets of rotating disks 13492 will perform circular motion within the outer wall of the columnar connecting rod 13491 and the outer shell 1341 of the isolation tube. Simultaneously, the rotation of the multiple sets of rotating disks 13492 drives the rotating plate 13494 to rotate via the connecting block 13493. The rotation of the rotating plate 13494 then drives the multiple rectangular plates 13495 on the outer wall to rotate. At this time, the fourth gear 13411 and the third gear 13498 at the outer end of the columnar transmission horizontal rod 13410 on one side of the rectangular plate 13495 mesh, allowing the multiple sets of columnar transmission horizontal rods 13410 to rotate on their own axis while performing circular motion on the outer wall of the columnar connecting rod 13491. The rotation of the columnar transmission horizontal rods 13410 drives... The rotation of the drive shaft 13412 and the second track 13413 mounted on it further drives the rotation of the second drive shaft 13414 and the columnar rotating crossbar 13415. As the columnar rotating crossbar 13415 rotates, the circular rotating block 13416 and the ventilation gas barrier plate 13417 fixed thereon begin to perform circular motion. This opening and closing action can intermittently block ventilation gas from entering the inner wall of the isolation pipe shell 1341, thus increasing the residence time of methane molecules in the ventilation gas on the multiple adsorption plates 16 in the adsorption chamber 12. At the same time, due to the setting of the columnar blocking member 13497, when the ventilation gas barrier plate 13417 performs circular motion to the position of the columnar blocking member 13497... At this time, the columnar blocking element 13497 blocks the position where the gas exhaust baffle 13417 was previously located, thereby achieving precise control of the opening and closing action of the gas exhaust baffle 13417. As the motor 15 continues to run, methane molecules in the adsorption chamber 12 are gradually enriched. In addition, when the gas exhaust baffle 13417 rotates to the inside of the dust wiping disc 13418, the dust wiping disc 13418 will wipe the outer wall of the gas exhaust baffle 13417, effectively removing impurities and dust attached to the gas exhaust baffle 13417. The clean exhaust gas after the methane is adsorbed will be smoothly discharged through the clean exhaust gas outlet pipe 8. After a period of enrichment, when the methane molecules on the adsorption plate 16 reach a certain saturation level...Gas accounting for 10% to 12% of the total extracted exhaust gas can be introduced into the distribution pipe 3 through the desorption gas inlet pipe 4 and heated to approximately 300°C as the desorption gas. This desorption gas will desorb the methane molecules adsorbed on the adsorption plate 16 and discharge them through the concentrated gas outlet pipe 7. At this point, the enrichment process is complete, and the device can continue to the next enrichment cycle.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A methane enrichment device for coal mine ventilation and gas extraction, comprising an adsorption tube (1), characterized in that: A connecting frame (2) is fixedly connected to the outer wall of the adsorption tube (1). A distribution pipe (3) is fixedly connected to the left side of the adsorption tube (1). An outlet distribution pipe (6) is fixedly connected to the right side of the adsorption tube (1). A desorption gas inlet pipe (4) and a ventilation gas inlet pipe (5) are fixedly connected to the top and bottom of the outer wall of the distribution pipe (3), respectively. A concentrated gas outlet pipe (7) and a clean tail gas outlet pipe (8) are fixedly connected to the top and bottom of the outer wall of the outlet distribution pipe (6), respectively. The adsorption tube (1) includes an adsorption tube body (11), an adsorption chamber (12) is fixedly connected to the middle of the inner wall of the adsorption tube body (11), and distribution discs (13) are fixedly connected to the left and right sides of the inner wall of the adsorption tube body (11). A columnar rotating rod (14) is provided in the middle of the inner wall of the adsorption tube body (11) and the two distribution discs (13). The left end of the columnar rotating rod (14) extends to the outside of the left distribution disc (13) and is fixedly connected to a motor (15). The bottom of the motor (15) is fixedly connected to the top left side of the connecting frame (2). A plurality of adsorption plates (16) are fixedly connected to the inner wall of the adsorption chamber (12), and the middle of the plurality of adsorption plates (16) is sleeved on the outer wall of the columnar rotating rod (14).

2. The methane enrichment device for coal mine ventilation and gas extraction according to claim 1, characterized in that: Both of the distribution discs (13) include an adsorption disc body (131). The outer walls of the two adsorption disc bodies (131) are fixedly connected to the left and right sides of the inner wall of the adsorption tube body (11). The middle part of the two adsorption disc bodies (131) is hollowed out. The middle part of the inner side of the two adsorption disc bodies (131) is fixedly connected to a connecting tube (132). The inner end of the two connecting tubes (132) is fixedly connected to a gear (133). The middle part of the two gears (133) is hollowed out.

3. A methane enrichment device for coal mine ventilation and gas extraction according to claim 2, characterized in that: The inner sides of the two adsorption plate bodies (131) are provided with control tube control turntables (135). The outer walls of the two control tube control turntables (135) are fixedly connected with collars (136) in a ring array. The inner walls of the two sets of collars (136) are fixedly connected with exhaust gas isolation pipes (134). The side of the two adsorption plate bodies (131) that are aligned with the two sets of exhaust gas isolation pipes (134) is hollowed out. The inner walls of the two connecting pipes (132) and gears (133) are sleeved on both sides of the outer wall of the columnar rotating rod (14). The middle part of the inner wall of the two control tube control turntables (135) is fixedly connected to both sides of the outer wall of the columnar rotating rod (14) inside the adsorption plate body (131).

4. A methane enrichment device for coal mine ventilation and gas extraction according to claim 3, characterized in that: Both sets of ventilation gas isolation pipes (134) include isolation pipe shells (1341). The inner side of the outer wall of the outer wall of the two sets of isolation pipe shells (1341) is provided with columnar rotating block connecting grooves (1342). The inner wall of the columnar rotating block connecting grooves (1342) on the outer wall of the outer wall of the two sets of isolation pipe shells (1341) is rotatably connected with columnar rotating blocks (1343). The outer wall of the columnar rotating blocks (1343) is fixedly connected with second gears (1344). The side of the second gears (1344) is fixedly connected with a transmission disc (1345). The outer wall of the transmission discs (1345) is fitted with tracks (1346). The inner wall of the second gears (1344) meshes with the outer walls of the two gears (133) on multiple sides.

5. A methane enrichment device for coal mine ventilation and gas extraction according to claim 4, characterized in that: The inner walls of the two sets of tracks (1346) on the side away from the transmission disc (1345) extend to the middle of the inner wall of the two sets of isolation tube shells (1341) and are fitted with second transmission discs (1347). The inner walls of the two sets of second transmission discs (1347) are fixedly connected with columnar horizontal rotating rods (1348). The left and right sides of the inner walls of the two sets of isolation tube shells (1341) are fixedly connected with isolation components (1349).

6. A methane enrichment device for coal mine ventilation and gas extraction according to claim 5, characterized in that: Each of the multiple sets of isolation components (1349) includes a rotating disk columnar connecting rod (13491). The inner ends of each of the multiple sets of rotating disk columnar connecting rods (13491) are rotatably connected to a rotating disk (13492). The outer sides of each of the multiple sets of rotating disks (13492) are fixedly connected in a circular array to connecting blocks (13493). The outer ends of each of the multiple sets of rotating disks (13492) are fixedly connected to the left and right ends of two sets of columnar horizontal rotating rods (1348). The outer ends of each of the multiple sets of connecting blocks (13493) are fixed... A rotating plate (13494) is connected. The inner wall of the multiple sets of rotating plates (13494) is fitted onto the outer wall of the multiple sets of rotating disk columnar connecting rods (13491). The outer wall of the multiple sets of rotating plates (13494) is fixedly connected to a rectangular plate (13495) in a ring array. The inner side of the multiple sets of rectangular plates (13495) is fixedly connected to a columnar blocking member connecting plate (13496). The outer wall of the multiple sets of columnar blocking member connecting plates (13496) is fixedly connected to a columnar blocking member (13497).

7. A methane enrichment device for coal mine ventilation and gas extraction according to claim 6, characterized in that: Each of the multiple sets of rotating disc columnar connecting rods (13491) has a connecting plate (13499) fixedly connected to its outer end. Each of the multiple sets of rotating disc columnar connecting rods (13491) has a third gear (13498) fixedly connected to its outer wall on one side of the inner side of the multiple sets of connecting plates (13499) and the columnar blocking member connecting plate (13496). Each of the multiple sets of connecting plates (13499) has a dust wiping disc (13418) fixedly connected to its outer side on the left and right sides of the inner wall of the two sets of isolation tube shells (1341). Each of the multiple sets of connecting plates (13499) has a dust wiping disc (13418) fixedly connected in a ring array on the side of the multiple sets of connecting plates (13499) near the third gear (13498).

8. A methane enrichment device for coal mine ventilation and gas extraction according to claim 7, characterized in that: Each of the rectangular plates (13495) has a columnar transmission crossbar (13410) rotatably connected to the side of the outer side of the columnar transmission crossbar (13410) near the rotating disk columnar connecting rod (13491), and a fourth gear (13411) is fixedly connected to the outer end of each of the columnar transmission crossbars (13410).

9. A methane enrichment device for coal mine ventilation and gas extraction according to claim 8, characterized in that: The outer walls of the multiple sets of columnar transmission crossbars (13410) are all fixedly connected to transmission shafts (13412), the outer walls of the multiple sets of transmission shafts (13412) are all fitted with second tracks (13413), the side of the multiple sets of second tracks (13413) away from the transmission shafts (13412) is fitted with a second transmission shaft (13414), the inner walls of the multiple sets of second transmission shafts (13414) are all fixedly connected to columnar rotating crossbars (13415), the inner ends of the multiple sets of columnar rotating crossbars (13415) are all rotatably connected to the outer sides of the multiple sets of rectangular plates (13495), the outer ends of the multiple sets of columnar rotating crossbars (13415) are all fixedly connected to circular rotating blocks (13416), and the outer walls of the multiple sets of circular rotating blocks (13416) are all fixedly connected to ventilation gas barrier plates (13417).

10. A methane enrichment device for coal mine ventilation and gas extraction according to claim 4, characterized in that: The two sets of ventilation gas barrier plates (13417) and the two sets of columnar blocking members (13497) set on the left and right sides of the two sets of isolation pipe shells (1341) and the two isolation members (1349) inside the isolation pipe shell (1341) are all hollowed out.

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