Hollow fiber membrane helium purification equipment and process

Abstract

The invention relates to the technical field of helium purification, and discloses hollow fiber membrane helium purification equipment and process, and the hollow fiber membrane helium purification equipment comprises a gas-liquid directional drainage mechanism and a coaxial medium driving mechanism, the longitudinal center rotating shaft is located in the center of the inner medium conveying barrel and can rotate, the wind power fan blades can rotate along with the longitudinal center rotating shaft and drive gas to move downwards, and the annular filter cloth rotates along with the longitudinal center rotating shaft and conducts adsorption type filtration on wet gas. According to the hollow fiber membrane helium purification equipment and process, the filtering cloth rotating at a high speed is used for absorbing and filtering moisture mixed in helium, so that the purity of the helium is improved, in addition, liquid attached to the filtering cloth can be discharged outwards in time under the action of centrifugal force, and the helium purification efficiency is improved. Therefore, the phenomenon that the filtering efficiency is reduced due to the moisture is reduced.

Description

Technical Field

[0001] This invention relates to the field of technology, specifically to a hollow fiber membrane helium purification device and process. Background Technology

[0002] Helium is widely used in various industries, including military, scientific research, petrochemicals, refrigeration, semiconductors, medical applications, pipeline leak detection, and high-precision welding. Although helium has a wide range of uses and is used in large quantities, its content in the air is very low. Industrially, helium is separated and refined from natural gas, which contains about 0.5% helium. In the purification process, to reduce the moisture that may be present in the purified helium, the purified helium is usually dried and filtered to improve its purity.

[0003] For example, Chinese patent publication number "CN222489542U" discloses "a helium purification device," whose main structure includes a purification box, a collection box, and a horizontal plate installed between the purification box and the collection box. Two symmetrically arranged filter boxes are connected to the upper surface of the horizontal plate. Gas supply pipes are fixedly connected and connected to both sides of the two filter boxes. Four gas supply pipes are respectively connected to the purification box and the collection box, and valves are fixedly connected and connected to the outer walls of the four gas supply pipes. A cover is hinged to the top of each adjacent side of the two filter boxes, and a locking device is connected to the other side of each cover. The other side of each locking device is connected to the two filter boxes, and a sealing gasket is connected between the cover and the filter boxes. This helium purification device, by installing two filter boxes on the horizontal plate, allows for continuous helium filtration by relying on the other filter box while the filter media in one filter box is being replaced, further improving the helium filtration efficiency and ensuring continuous helium filtration operation.

[0004] It is clear that the above-mentioned helium purification equipment uses two reusable filter boxes for replacement to ensure the continuity of filtration. However, the replaced filter box still needs to have its internal liquid drained and cleaned, resulting in low automation. In addition, the working filter box cannot drain its internal liquid in time, and humid gas will adhere to the surface of the filter plate, causing its filtration effect to drop significantly with the length of working time. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a hollow fiber membrane helium purification device and process. It utilizes a high-speed rotating filter cloth to adsorb and filter moisture mixed in helium, thereby improving the purity of helium. Furthermore, the liquid adhering to the filter cloth is promptly discharged under centrifugal force, thus reducing the decrease in filtration efficiency caused by moisture and solving the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hollow fiber membrane helium purification device and process, comprising an external fixing sleeve with supporting legs installed at the bottom, and a gas-liquid directional drainage mechanism, which internally comprises an outer medium conveying cylinder fixedly installed at the center of the external fixing sleeve and having a hollow interior, an inner medium conveying cylinder located at the center of the outer medium conveying cylinder and having a hollow interior, an outer component mounting cavity located inside the outer medium conveying cylinder and directly below the inner medium conveying cylinder, and an upper pipe docking ring located at the bottom of the outer component mounting cavity for discharging the separated liquid; and a coaxial medium driving mechanism internally comprises a longitudinal central rotating shaft located at the center of the inner medium conveying cylinder and capable of rotation, a fan blade capable of rotating with the longitudinal central rotating shaft and driving the gas downward, and an annular filter cloth rotating with the longitudinal central rotating shaft and performing adsorption filtration of the humid gas.

[0007] Preferably, the gas-liquid directional drainage mechanism includes an outer gas flow cavity disposed inside an outer medium conveying cylinder. The outer medium conveying cylinder has an outer component mounting cavity at its bottom end and a liquid collection cavity at its bottom end. The bottom end of the outer medium conveying cylinder has an upper pipe docking ring with an open bottom end and a top end connected to the bottom end of the liquid collection cavity. The outer circumferential surface of the outer medium conveying cylinder has a medium conveying channel integrally formed therewith. One end of the medium conveying channel is connected to the external space, and the other end is connected to the top area of ​​the circumferential side of the outer gas flow cavity. The inner medium conveying cylinder is integrally disposed in the central area of ​​the outer gas flow cavity. Multiple hollow fixing frames are installed between the inner circumferential wall of the outer medium conveying cylinder and the outer circumferential wall of the inner medium conveying cylinder. The center of the inner medium conveying cylinder has an inner medium conveying cavity with an open top end. The bottom end of the inner medium conveying cylinder has a gas compression cavity located inside the outer component mounting cavity.

[0008] Preferably, the diameter of the top of the gas compression chamber matches the structural radius of the inner medium conveying chamber, and the diameter of the top of the gas compression chamber is larger than the diameter of its bottom.

[0009] Preferably, the diameter of the top of the liquid collection chamber matches the structural radius of the external component mounting cavity, and the diameter of the top of the liquid collection chamber is larger than the diameter of its bottom.

[0010] Preferably, the coaxial media drive mechanism includes a second hollow fixed frame fixedly installed inside the inner media conveying cavity. A portion of the longitudinal central rotating shaft is mounted in the central hole of the second hollow fixed frame via bearings. A driven pulley is fixedly installed on the shaft of the longitudinal central rotating shaft located directly above the second hollow fixed frame. A fan blade is fixedly installed on the shaft of the longitudinal central rotating shaft located inside the inner media conveying cavity. A lower driven plate is fixedly installed on the shaft of the longitudinal central rotating shaft located inside the outer component mounting cavity. An upper driven plate is placed directly above the lower driven plate in the outer component mounting cavity. The upper driven plate has a tube mounting hole located around the longitudinal central rotating shaft. The tube mounting hole of the upper driven plate is installed on the outer periphery of the bottom cylinder of the inner medium conveying cylinder through bearings and sealing rings. Multiple longitudinal connecting rods are fixedly installed between the upper surface and the lower surface of the lower driven plate. An annular filter cloth that rotates with the lower and upper driven plates is embedded in the outer circumferential surface of the lower and upper driven plates. The closed area formed by the inner circumferential wall of the annular filter cloth, the upper surface of the lower driven plate, and the lower surface of the upper driven plate forms a gas-liquid separation chamber. An upper connecting plate with an integral structure is provided at the bottom center of the lower driven plate.

[0011] Preferably, the shaft of the longitudinal central rotating shaft passes through the gas compression chamber, and the diameter of the bottom end of the gas compression chamber is larger than the structural radius of the longitudinal central rotating shaft.

[0012] Preferably, during operation, the driven pulley is linked to a drive pulley at the end of a drive motor rotor via a synchronous belt, and when the drive motor drives, the rotation of the fan blades creates a downward air-driven phenomenon.

[0013] Preferably, it also includes a driven liquid discharge mechanism, which has an axial screw that rotates with the upper connecting plate and causes the liquid to flow downward, and a movable blocking plate that moves downward when subjected to liquid pressure.

[0014] Preferably, the driven liquid discharge mechanism includes a liquid delivery pipe with an open-end liquid delivery hole inside. The top of the liquid delivery pipe has a lower pipe connection ring integrally formed and fixedly installed at the bottom of the upper pipe connection ring. The bottom of the liquid delivery pipe has a side limiting ear integrally formed with it. A rod through-hole with open ends is located at the center of the side limiting ear. An axial screw is placed inside the liquid delivery hole, and a lower connecting plate integrally formed and fixedly installed at the bottom of the upper connecting plate is located at the top of the liquid delivery hole. A longitudinal limiting rod penetrating the rod through-hole is fixedly installed on the upper surface of the movable blocking plate. An upper limiting plate is fixedly installed at the top of the longitudinal limiting rod. A compressed helical spring is sleeved around the rod located between the side limiting ear and the upper limiting plate. When the axial screw rotates with the upper connecting plate, it generates a downward liquid driving direction.

[0015] As a preferred purification process, S1: Connect the top of the inner medium conveying chamber to the discharge port of the ammonia mixture, and finally connect the pipeline for conveying pure ammonia to the medium conveying channel, and then start the drive motor; S2: The rotor drives the driven pulley to rotate in a direction via the synchronous belt, which in turn drives the longitudinal central shaft, fan blades and annular filter cloth to rotate rapidly. When ammonia with humid liquid passes through the annular filter cloth, the humid liquid is adsorbed by the annular filter cloth. The high-speed rotating annular filter cloth can generate centrifugal force on the liquid attached to it, thereby reducing the liquid being thrown to the surroundings and finally moving downwards under the action of gravity; S3: The high-speed rotating axial screw will cause the liquid accumulated around it to move downwards. When the liquid pressure is greater than the elastic force of the helical spring, it will cause the movable blocking plate to move downwards, and the liquid will be discharged outwards through the movement gap of the movable blocking plate.

[0016] Compared with the prior art, the present invention provides a hollow fiber membrane helium purification device and process, which has the following beneficial effects: The high-speed rotating filter cloth adsorbs and filters moisture mixed in helium gas, thereby improving the purity of helium gas. In addition, the liquid attached to the filter cloth will be discharged in time under the action of centrifugal force, thus reducing the phenomenon of decreased filtration efficiency caused by moisture. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the gas-liquid directional drainage mechanism in this invention; Figure 4This is a three-dimensional cross-sectional view of the gas-liquid directional drainage mechanism in this invention; Figure 5 This is a perspective view of the coaxial medium drive mechanism of the present invention; Figure 6 This is a three-dimensional cross-sectional view of the coaxial medium drive mechanism of the present invention; Figure 7 This is a perspective view of the driven liquid discharge mechanism in this invention; Figure 8 This is a three-dimensional cross-sectional view of the driven liquid discharge mechanism in this invention.

[0018] The components include: 1. External fixing sleeve; 2. Support leg; 3. Gas-liquid directional drainage mechanism; 31. External medium conveying cylinder; 32. External gas flow cavity; 33. Internal medium conveying cylinder; 34. Internal medium conveying cavity; 35. Medium conveying channel; 36. Gas compression cavity; 37. External component mounting cavity; 38. Liquid collection cavity; 39. Upper pipe docking ring; 310. Hollow fixing frame No. 1; 4. Coaxial medium drive mechanism; 41. Longitudinal central rotating shaft; 42. Driven pulley; 43. Hollow fixing frame No. 2; 44. Air... 45. Driven fan blade; 46. Lower driven plate; 47. Upper driven plate; 48. Pipe mounting hole; 49. Annular filter cloth; 40. Gas-liquid separation chamber; 410. Longitudinal connecting rod; 411. Upper connecting plate; 5. Driven liquid discharge mechanism; 51. Liquid conveying pipe; 52. Lower pipe docking ring; 53. Side limiting ear; 54. Liquid conveying hole; 55. Axial screw; 56. Lower connecting plate; 57. Rod body through hole; 58. Movable blocking plate; 59. Longitudinal limiting rod; 510. Upper limiting plate; 511. Helical spring. 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] Please see Figure 1 and Figure 2 A hollow fiber membrane helium purification device and process includes an external fixing sleeve 1 with a support leg 2 installed at the bottom. During operation, the driven pulley 42 is linked to the drive pulley at the end of a drive motor rotor via a synchronous belt. Then, the top of the inner medium conveying chamber 34 is connected to the discharge port of the ammonia mixture. Finally, the pipeline for conveying pure ammonia is connected to the medium conveying channel 35.

[0021] To achieve the function of diverting the ammonia mixture, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A gas-liquid directional drainage mechanism 3 needs to be set up. The mechanism includes an outer medium conveying cylinder 31, which is fixedly installed in the center of the outer fixed sleeve 1 and is hollow inside; an inner medium conveying cylinder 33, which is located in the center of the outer medium conveying cylinder 31 and is hollow inside; an outer component mounting cavity 37, which is located inside the outer medium conveying cylinder 31 and directly below the inner medium conveying cylinder 33; and an upper pipe docking ring 39, which is located at the bottom of the outer component mounting cavity 37 and is used to discharge the separated liquid. When the drive motor is started, the ammonia mixture moves downward through the inner medium conveying cavity 34. Then, the filtered liquid is discharged downward along the liquid collection cavity 38 and the upper pipe docking ring 39 under the action of gravity. The pure ammonia gas flows to the outside through the outer gas flow cavity 32 and the medium conveying channel 35, thereby realizing the drainage function of the ammonia mixture.

[0022] For the specific structure of the gas-liquid directional drainage mechanism 3, please refer to [link / reference]. Figure 3 and Figure 4 The system includes an outer gas flow cavity 32 disposed inside an outer medium conveying cylinder 31. An outer component mounting cavity 37 is provided at the bottom end of the outer medium conveying cylinder 31 located within the outer gas flow cavity 32. A liquid collection cavity 38 is provided at the bottom end of the outer medium conveying cylinder 31 located within the outer component mounting cavity 37. An upper pipe connection ring 39, with an open bottom and a top end connected to the bottom end of the liquid collection cavity 38, is provided at the bottom end of the outer medium conveying cylinder 31. A medium conveying channel 35, integrally formed with the outer medium conveying cylinder 31, is provided on its outer circumferential surface. One end of the medium conveying channel 35 connects to the external space, and the other end connects to the top area of ​​the circumferential side surface of the outer gas flow cavity 32. An inner medium conveying cylinder 33 is integrally disposed within the outer gas flow cavity 32. In the central region of the gas flow cavity 32, and between the inner circumferential wall of the outer medium conveying cylinder 31 and the outer circumferential wall of the inner medium conveying cylinder 33, a plurality of hollow fixing brackets 310 are installed. The center of the inner medium conveying cylinder 33 is provided with an inner medium conveying cavity 34 with the top end open. The bottom end of the inner medium conveying cylinder 33 is provided with a gas compression cavity 36 located inside the outer component mounting cavity 37. The diameter of the top end of the gas compression cavity 36 matches the structural radius of the inner medium conveying cavity 34, and the diameter of the top end of the gas compression cavity 36 is larger than the diameter of its bottom end. The diameter of the top end of the liquid collection cavity 38 matches the structural radius of the outer component mounting cavity 37, and the diameter of the top end of the liquid collection cavity 38 is larger than the diameter of its bottom end.

[0023] To achieve gas driving and gas-liquid separation, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 and Figure 6A coaxial medium drive mechanism 4 is required, which includes a longitudinal central shaft 41 located at the center of the inner medium conveying cylinder 33 and capable of rotation, a fan blade 44 that rotates with the longitudinal central shaft 41 and drives the gas downward, and an annular filter cloth 48 that rotates with the longitudinal central shaft 41 and performs adsorption filtration of the humid gas. The rotor drives the driven pulley 42 to rotate directionally via a synchronous belt, which in turn drives the longitudinal central shaft 41, the fan blade 44, and the annular filter cloth 48 to rotate rapidly. The rotation of the fan blade 44 causes the ammonia gas with humid liquid to flow downward. When the ammonia gas with humid liquid passes through the annular filter cloth 48, the humid liquid is adsorbed by the annular filter cloth 48, while the ammonia gas passes through the annular filter cloth 48. At the same time, the high-speed rotation of the annular filter cloth 48 can generate centrifugal force on the liquid attached to it, thereby reducing the liquid being thrown to the surroundings. Finally, under the action of gravity, it moves downward, thereby achieving the driving of the gas and the separation of gas and liquid.

[0024] For the specific structure of the coaxial media drive mechanism 4, please refer to [link / reference]. Figure 5 and Figure 6The system includes a second hollow mounting frame 43 fixedly installed inside the inner medium conveying cavity 34. A portion of the longitudinal central rotating shaft 41 is mounted in the central hole of the second hollow mounting frame 43 via bearings. A driven pulley 42 is fixedly mounted on the shaft of the longitudinal central rotating shaft 41 located directly above the second hollow mounting frame 43. A fan blade 44 is fixedly mounted on the shaft of the longitudinal central rotating shaft 41 located inside the inner medium conveying cavity 34. A lower driven plate 45 is fixedly mounted on the shaft of the longitudinal central rotating shaft 41 located inside the outer component mounting cavity 37. An upper driven plate 46 is placed directly above the lower driven plate 45 in the outer component mounting cavity 37. A tube mounting hole 47 is provided at the center of the upper driven plate 46, located around the longitudinal central rotating shaft 41. The tube mounting hole 47 of the upper driven plate 46 is mounted around the bottom of the inner medium conveying cylinder 33 via bearings and a sealing ring. Multiple longitudinal connecting rods 410 are fixedly installed between the upper surface of the lower driven plate 45 and the lower surface of the upper driven plate 46. An annular filter cloth 48, which rotates with the lower driven plate 45 and the upper driven plate 46, is embedded in the outer circumferential surface of the lower driven plate 45 and the upper driven plate 46. The closed area formed by the inner circumferential wall of the annular filter cloth 48, the upper surface of the lower driven plate 45 and the lower surface of the upper driven plate 46 forms a gas-liquid separation chamber 49. An upper connecting plate 411 with an integral structure is provided at the bottom center of the lower driven plate 45. The shaft of the longitudinal central rotating shaft 41 passes through the gas compression chamber 36, and the diameter of the bottom end of the gas compression chamber 36 is larger than the structural radius of the longitudinal central rotating shaft 41. During operation, the driven pulley 42 is linked with the drive pulley at the end of the rotor of a drive motor through a synchronous belt. When the drive motor is driven, the rotation of the fan blade 44 forms a gas-driven phenomenon from top to bottom.

[0025] To achieve timely liquid discharge and effective gas-liquid separation, please refer to [link / reference needed]. Figure 1 , Figure 2 , Figure 7 and Figure 8 A driven liquid discharge mechanism 5 needs to be set up, which contains an axial screw 55 that rotates with the upper connecting plate 411 and causes the liquid to flow downward, and a movable blocking plate 58 that moves downward when subjected to liquid pressure. The high-speed rotating axial screw 55 causes the accumulated liquid around it to move downward. When the liquid pressure is greater than the elastic force of the helical spring 511, the movable blocking plate 58 will move downward, and the liquid will be discharged outward through the movement gap of the movable blocking plate 58. Due to the accumulation and discharge of liquid, ammonia gas will not leak, thereby achieving timely discharge of liquid and gas-liquid separation effect.

[0026] For details regarding the structure of the driven liquid discharge mechanism 5, please refer to [link / reference]. Figure 7 and Figure 8The system includes a liquid delivery pipe 51, with a liquid delivery hole 54 open at both ends inside the liquid delivery pipe 51. A lower pipe coupling ring 52, integrally formed and fixedly installed at the bottom end of the upper pipe coupling ring 39, is located at the top end of the liquid delivery pipe 51. A side limiting ear 53, integrally formed with the liquid delivery pipe 51, is located at the bottom end of the liquid delivery pipe 51. A rod through hole 57, open at both ends, is located at the center of the side limiting ear 53. An axial screw 55 is placed inside the liquid delivery hole 54. The top of the upper connecting plate 56 is integrally formed with the lower connecting plate 56 and fixedly installed at the bottom of the upper connecting plate 411. The upper surface of the movable blocking plate 58 is fixedly installed with a longitudinal limiting rod 59 that passes through the rod body through the hole 57. The top of the longitudinal limiting rod 59 is fixedly installed with an upper limiting plate 510. A compressed helical spring 511 is sleeved around the rod body of the longitudinal limiting rod 59 located between the side limiting ear 53 and the upper limiting plate 510. When the axial screw 55 rotates with the upper connecting plate 411, it generates a downward liquid driving direction.

[0027] In use, the driven pulley 42 is linked to a drive pulley at the end of a drive motor rotor via a synchronous belt. Then, the top of the inner medium conveying chamber 34 is connected to the discharge port for the ammonia mixture. Finally, the pipe for conveying pure ammonia is connected to the medium conveying channel 35. The rotor, via the synchronous belt, drives the driven pulley 42 to rotate in a specific direction, which in turn drives the longitudinal central shaft 41, the fan blades 44, and the annular filter cloth 48 to rotate rapidly. The rotation of the fan blades 44 causes the ammonia gas containing humid liquid to flow downwards. When the ammonia gas containing humid liquid passes through the annular filter cloth 48... When the filter cloth 48 is in operation, the moist liquid will be adsorbed by the annular filter cloth 48, while the ammonia gas will pass through the annular filter cloth 48. At the same time, the high-speed rotating annular filter cloth 48 can generate centrifugal force on the liquid attached inside it, thereby reducing the liquid being thrown to the surroundings. Finally, under the action of gravity, it moves downward. The high-speed rotating axial screw 55 will cause the liquid accumulated around it to move downward. When the liquid pressure is greater than the elastic force of the helical spring 511, it will cause the movable blocking plate 58 to move downward, and the liquid will be discharged outward through the movement gap of the movable blocking plate 58.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hollow fiber membrane helium purification device, comprising an external fixing sleeve (1) with a support leg (2) installed at the bottom, characterized in that: It also includes, The gas-liquid directional drainage mechanism (3) is provided with an outer medium conveying cylinder (31) fixedly installed in the center of the outer fixed sleeve (1) and hollow inside, an inner medium conveying cylinder (33) set in the center of the outer medium conveying cylinder (31) and hollow inside, an outer component mounting cavity (37) set inside the outer medium conveying cylinder (31) and located directly below the inner medium conveying cylinder (33), and an upper pipe docking ring (39) set at the bottom of the outer component mounting cavity (37) for discharging the separated liquid. And a coaxial medium drive mechanism (4), which is provided with a longitudinal central shaft (41) located at the center of the inner medium conveying cylinder (33) and capable of rotation, a wind fan blade (44) capable of rotating with the longitudinal central shaft (41) and driving the gas downward, and an annular filter cloth (48) rotating with the longitudinal central shaft (41) and performing adsorption filtration on the humid gas.

2. The hollow fiber membrane helium purification equipment according to claim 1, characterized in that: The gas-liquid directional drainage mechanism (3) includes an external gas flow cavity (32) disposed inside an external medium conveying cylinder (31). An external component mounting cavity (37) is provided at the bottom end of the external gas flow cavity (32). A liquid collection cavity (38) is provided at the bottom end of the external medium conveying cylinder (31) located in the external component mounting cavity (37). An upper pipe docking ring (39) with an open bottom end and a top end connected to the bottom end of the liquid collection cavity (38) is provided at the bottom end of the external medium conveying cylinder (31). A medium conveying channel (35) integrally formed with the outer circumference of the external medium conveying cylinder (31) is provided. One end of the medium conveying channel (35) is connected to the outside space, and the other end is connected to the top area of ​​the circumferential side of the outer gas flow cavity (32). The inner medium conveying cylinder (33) is integrally set in the central area of ​​the outer gas flow cavity (32). Multiple hollow fixing frames (310) are installed between the inner circumferential wall of the outer medium conveying cylinder (31) and the outer circumferential wall of the inner medium conveying cylinder (33). The center of the inner medium conveying cylinder (33) is provided with an inner medium conveying cavity (34) with the top open. The bottom end of the inner medium conveying cylinder (33) is provided with a gas compression cavity (36) located inside the outer component mounting cavity (37).

3. The hollow fiber membrane helium purification equipment according to claim 2, characterized in that: The diameter at the top of the gas compression chamber (36) matches the structural radius of the inner medium conveying chamber (34), and the diameter at the top of the gas compression chamber (36) is larger than the diameter at its bottom.

4. The hollow fiber membrane helium purification equipment according to claim 3, characterized in that: The diameter of the top of the liquid collection chamber (38) matches the structural radius of the external component mounting cavity (37), and the diameter of the top of the liquid collection chamber (38) is larger than the diameter of its bottom.

5. The hollow fiber membrane helium purification equipment according to claim 4, characterized in that: The coaxial media drive mechanism (4) includes a second hollow fixed frame (43) fixedly installed inside the inner media conveying cavity (34). Part of the shaft of the longitudinal central rotating shaft (41) is installed in the central hole of the second hollow fixed frame (43) through bearings. A driven pulley (42) is fixedly installed on the shaft of the longitudinal central rotating shaft (41) located directly above the second hollow fixed frame (43). A wind turbine blade (44) is fixedly installed on the shaft of the longitudinal central rotating shaft (41) located inside the inner media conveying cavity (34). A lower driven plate (45) is fixedly installed on the shaft of the longitudinal central rotating shaft (41) located inside the outer component mounting cavity (37). An upper driven plate (46) is placed directly above the lower driven plate (45) in the outer component mounting cavity (37). The center of the upper driven plate (46) is set There is a tube mounting hole (47) located around the longitudinal central rotating shaft (41). The tube mounting hole (47) of the upper driven plate (46) is installed on the outer periphery of the bottom cylinder of the inner medium conveying cylinder (33) through bearings and sealing rings. Multiple longitudinal connecting rods (410) are fixedly installed between the upper surface of the lower driven plate (45) and the lower surface of the upper driven plate (46). An annular filter cloth (48) that rotates with the lower driven plate (45) and the upper driven plate (46) is embedded in the outer circumferential surface of the lower driven plate (45) and the upper driven plate (46). The closed area formed by the inner circumferential wall of the annular filter cloth (48), the upper surface of the lower driven plate (45) and the lower surface of the upper driven plate (46) forms a gas-liquid separation chamber (49). An upper connecting plate (411) with an integral structure is provided at the bottom center of the lower driven plate (45).

6. The hollow fiber membrane helium purification equipment according to claim 5, characterized in that: The shaft of the longitudinal central rotating shaft (41) passes through the gas compression chamber (36), and the diameter of the bottom end of the gas compression chamber (36) is larger than the structural radius of the longitudinal central rotating shaft (41).

7. The hollow fiber membrane helium purification equipment according to claim 6, characterized in that: During operation, the driven pulley (42) is linked to the drive pulley at the end of a drive motor rotor via a synchronous belt, and when the drive motor drives, the rotation of the fan blade (44) forms a downward gas-driven phenomenon.

8. The hollow fiber membrane helium purification equipment according to claim 7, characterized in that: It also includes a driven liquid discharge mechanism (5), which is provided with an axial screw (55) that rotates with the upper connecting plate (411) and causes the liquid to flow downward, and a movable blocking plate (58) that moves downward when subjected to liquid pressure.

9. The hollow fiber membrane helium purification equipment according to claim 8, characterized in that: The driven liquid discharge mechanism (5) includes a liquid delivery pipe (51), the liquid delivery pipe (51) has a liquid delivery hole (54) with both ends open inside, the top end of the liquid delivery pipe (51) has a lower pipe docking ring (52) integrally formed with it and fixedly installed at the bottom end of the upper pipe docking ring (39), the bottom end of the liquid delivery pipe (51) has a side limiting ear (53) integrally formed with it, the center of the side limiting ear (53) has a rod through hole (57) with both ends open, the axial screw (55) is placed inside the liquid delivery hole (54), and the liquid The top of the conveying hole (54) is provided with a lower connecting plate (56) which is integral with it and fixedly installed at the bottom of the upper connecting plate (411). The upper surface of the movable blocking plate (58) is fixedly installed with a longitudinal limiting rod (59) that passes through the rod body through hole (57). The top of the longitudinal limiting rod (59) is fixedly installed with an upper limiting plate (510). A compressed helical spring (511) is placed around the rod body of the longitudinal limiting rod (59) located between the side limiting ear (53) and the upper limiting plate (510). When the axial screw (55) rotates with the upper connecting plate (411), it generates a downward liquid driving direction.

10. A purification process for a hollow fiber membrane helium purification device according to claim 9, characterized in that: Includes the following steps, S1: Connect the top of the inner medium conveying chamber (34) to the discharge port of the ammonia mixture, and finally connect the pipe used to convey pure ammonia to the medium conveying channel (35), and then start the drive motor. S2: The rotor drives the driven pulley (42) to rotate in a direction via the synchronous belt, which in turn drives the longitudinal central shaft (41), the fan blade (44) and the annular filter cloth (48) to rotate rapidly. When ammonia gas with humid liquid passes through the annular filter cloth (48), the humid liquid will be adsorbed by the annular filter cloth (48). The high-speed rotating annular filter cloth (48) can make the liquid attached to it generate centrifugal force, thereby reducing the liquid being thrown to the surroundings and finally moving downwards under the action of gravity. S3: The high-speed rotating axial screw (55) will cause the accumulated liquid around it to move downward. When the liquid pressure is greater than the elastic force of the helical spring (511), the movable blocking plate (58) will move downward, and the liquid will be discharged outward through the movement gap of the movable blocking plate (58).

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