Nitrogen carbon deoxidation and purification device

Abstract

The invention relates to the technical field of nitrogen purification, and discloses a nitrogen carbon deoxidation and purification device which comprises a purification tank, the top of the purification tank is communicated with an exhaust pipe, four first supports distributed circumferentially are fixedly installed on the inner wall of the purification tank, a purification cylinder is fixedly installed on each first support, and the purification cylinder is communicated with the exhaust pipe. In order to avoid the problem that nitrogen always penetrates through the area, close to the opening, of the modular catalyst bed, so that the utilization efficiency of catalysts in other areas on the modular catalyst bed is low, the driving assembly drives the first gear ring to rotate, and the modular catalyst bed is driven to rotate in the purification barrel through rotation of the first gear ring; therefore, the position of the modularized catalyst bed corresponding to the opening is changed, catalysts in different areas of the modularized catalyst bed can be alternately used, the adsorption load of each part is balanced, the reduction of the activity of the catalyst is delayed, and the utilization efficiency of the whole modularized catalyst bed is improved while the whole service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of nitrogen purification, and particularly to a nitrogen carbon deoxidation purification device. Background Art

[0002] Nitrogen deoxidation purification aims to obtain high-purity nitrogen by removing impurities such as oxygen to meet the requirements of various industries. In the traditional process, a catalyst bed is arranged in a purification tank, nitrogen is introduced from the bottom of the tank, and oxygen is adsorbed when flowing through the catalyst bed. High-purity nitrogen is discharged through the top gas outlet pipe. However, after long-term use, the catalyst needs to be replaced, and for this reason, a modular catalyst bed has emerged.

[0003] Specifically, the modular design uses an inner pipe to semi-wrap the catalyst module. When replacing, the module is fully wrapped through a sealing device, isolating the inner pipe from the inside of the purification tank, and then connecting the inner pipe to the outside to achieve convenient replacement. However, this solution has defects: since the modular catalyst beds are scattered in the tank and the air flow enters from the bottom and exits from the top to form a single channel, it causes the side of the modular catalyst bed far from the exhaust port to be difficult to contact the air flow and unable to fully participate in the deoxidation reaction, resulting in low utilization rate of the catalyst bed and affecting the nitrogen purification efficiency and cost control. Based on this, the present invention purposefully provides a nitrogen carbon deoxidation purification device that can adjust the orientation of the modular catalyst bed in the purification tank body and improve the utilization rate of the catalyst bed. Summary of the Invention

[0004] The purpose of the present invention is to provide a nitrogen carbon deoxidation purification device for the deficiencies of the prior art to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A nitrogen carbon deoxidation purification device, comprising: A purification tank, the top of the purification tank is connected to an exhaust pipe, four first brackets arranged circumferentially are fixedly installed on the inner wall of the purification tank, a purification cylinder is fixedly installed on each first bracket, the top end of the purification cylinder penetrates through the top of the purification tank, and this end is hermetically connected to a sealing cover. An air flow distributor is fixedly installed on the bottom plate of the purification cylinder, the air flow distributor is communicated with a branch pipe, one end of the branch pipe penetrates through the bottom of the purification tank, an opening is formed in the purification cylinder, the opening faces the exhaust pipe, a first gear ring is rotatably installed on the purification cylinder, the first gear ring is driven by a driving component to rotate, the first gear ring is located between the air flow distributor and the opening, convex blocks are fixedly installed on the inner wall of the first gear ring, the convex blocks are located inside the purification cylinder, a modular catalyst bed is slidably installed inside the purification cylinder, a clamping groove is formed at the bottom end of the modular catalyst bed, and the clamping groove is slidably connected with the convex blocks; A main pipe, the main pipe is communicated with one end of the four branch pipes located below the purification tank, and a solenoid valve is arranged on the main pipe; A sealing assembly, which is arranged inside a purification tank and is used to seal four openings.

[0006] As a further aspect of the present invention: A handle is fixedly installed at the top of the modular catalyst bed.

[0007] As a further aspect of the present invention: The sealing assembly includes a fixed block, an arc-shaped plate, a telescopic rod and a linkage assembly. The fixed block is fixedly installed inside the purification tank, and the four brackets of the fixed block are fixedly connected to the inner wall of the purification tank. The four circumferentially arranged telescopic rods are all slidably installed inside the fixed block, and the four telescopic rods are driven by the linkage assembly to move synchronously. One end of each telescopic rod extending out of the fixed block is fixedly installed with an arc-shaped plate. When the four telescopic rods contract, the arc-shaped plates move away from the openings. When the four telescopic rods extend, the arc-shaped plates block the openings.

[0008] As a further aspect of the present invention: The linkage assembly includes a round rod, a turntable, an inclined groove and a straight groove. The straight groove is opened inside the fixed block. The turntable is rotatably installed inside the fixed block. The inclined groove is opened on the turntable, and an included angle is formed between the inclined groove and the straight groove. The round rod is fixedly installed on the telescopic rod, and the round rod is slidably connected to the straight groove and is also slidably connected to the inclined groove. A through hole is opened at the bottom of the fixed block, and a rotating rod is rotatably installed inside the through hole. The rotating rod is coaxially fixedly connected to the turntable, and the rotating rod is driven to rotate by a first output source built in the purification tank.

[0009] As a further aspect of the present invention: The sealing assembly further includes a sealing strip, which is fixedly installed on the outer circumferential surface of the purification cylinder and surrounds the openings. When the arc-shaped plates block the openings, the arc-shaped plates abut against the sealing strip and cause the sealing strip to deform.

[0010] As a further aspect of the present invention: Each arc-shaped plate is slidably installed on a second bracket, and the second bracket is fixedly connected to the inner wall of the purification tank.

[0011] As a further aspect of the present invention: The driving assembly includes a runner, a second gear ring, a third gear ring and a gear. The runner is rotatably installed inside the purification tank. The second gear ring is fixedly installed on the outer circumferential surface of the runner. The second gear ring meshes with all four first gear rings. The third gear ring is fixedly installed on the rotating shaft of the runner. The gear is rotatably installed inside the purification tank. The gear meshes with the third gear ring, and the gear is driven to rotate by a second output source built in the purification tank.

[0012] As a further aspect of the present invention: The rotating shaft of the runner is sleeved on the rotating rod, and the runner is rotatably connected to the rotating rod. Both the first output source and the second output source are arranged on the bottom plate of the purification tank.

[0013] The beneficial effects of the present invention: 1. In the present invention, according to the specific flow path of nitrogen in the purification tank, in order to avoid the problem that nitrogen always passes through the area near the opening on the modular catalyst bed, resulting in low utilization efficiency of the catalyst in other areas of the modular catalyst bed, the driving assembly drives the first gear ring to rotate, and the rotation of the first gear ring drives the modular catalyst bed to rotate in the purification cylinder, thereby changing the position corresponding to the opening of the modular catalyst bed, enabling the rotation of different areas of the catalyst on the modular catalyst bed, balancing the adsorption load of each part, delaying the decline of catalyst activity, extending the overall service life, and improving the utilization efficiency of the entire modular catalyst bed; 2. In the present invention, by simultaneously controlling the synchronous opening and closing of the four openings, the cumbersome steps of individual operations are avoided, and this sealing method is achieved by the inner arc surface of the arc-shaped plate abutting against the outer circular surface of the purification cylinder, and the sealing effect is achieved through tight abutment, with a better sealing effect; 3. In the present invention, by providing a sealing strip on the outer circular surface of the purification cylinder, when the arc-shaped plate tightly abuts against the purification cylinder, the arc-shaped plate will abut against the sealing strip and cause the sealing strip to deform, thereby blocking the gap between the arc-shaped plate and the purification cylinder, achieving good sealing performance, and avoiding the problem that in the traditional design of inner and outer tubes, where there is a gap between the inner and outer tubes during the sealing effect achieved by the rotation of the outer tube, resulting in a decline in sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the bottom of the purification tank in the present invention; Figure 3 is a schematic sectional view of the purification tank in the present invention; Figure 4 is a schematic diagram of the structure of the rotating wheel in the present invention; Figure 5 is a schematic sectional view of the purification cylinder in the present invention; Figure 6 is a schematic diagram of the structure of the card slot and the convex block in the present invention; Figure 7 is a schematic diagram of the internal structure of the purification tank in the present invention; Figure 8 is a schematic sectional view of the fixed block in the present invention; Figure 9 is a schematic diagram of the separated structure of the turntable and the fixed block in the present invention.

[0016] In the figure: 1, purification tank; 101, first support; 102, second support; 2, main pipe; 201, solenoid valve; 3, branch pipe; 301, air flow distributor; 4, exhaust pipe; 5, purification cylinder; 501, sealing strip; 6, opening; 7, modular catalyst bed; 701, card slot; 702, handle; 8, sealing cover; 9, first gear ring; 901, convex block; 10, second gear ring; 11, third gear ring; 12, gear; 13, runner; 14, arc plate; 15, fixed block; 16, telescopic rod; 17, round rod; 18, turntable; 19, inclined slot; 20, straight slot; 21, through hole; 22, rotating rod. Detailed implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-9 As shown, the present invention is a nitrogen carbon deoxidation purification device, including: Purification tank 1, the top of the purification tank 1 is communicated with an exhaust pipe 4, four first supports 101 arranged circumferentially are fixedly installed on the inner wall of the purification tank 1, a purification cylinder 5 is fixedly installed on each first support 101, the top end of the purification cylinder 5 penetrates through the top of the purification tank 1, and this end is hermetically connected to a sealing cover 8, an air flow distributor 301 is fixedly installed on the bottom plate of the purification cylinder 5, the air flow distributor 301 is communicated with a branch pipe 3, one end of the branch pipe 3 penetrates through the bottom of the purification tank 1, an opening 6 is formed in the purification cylinder 5, the opening 6 faces the exhaust pipe 4, a first gear ring 9 is rotatably installed on the purification cylinder 5, the first gear ring 9 is driven by a driving component to rotate, the first gear ring 9 is located between the air flow distributor 301 and the opening 6, a convex block 901 is fixedly installed on the inner wall of the first gear ring 9, the convex block 901 is located inside the purification cylinder 5, a modular catalyst bed 7 is slidably installed in the purification cylinder 5, a card slot 701 is formed at the bottom end of the modular catalyst bed 7, and the card slot 701 is slidably connected to the convex block 901; Main pipe 2, the main pipe 2 is communicated with one end of the four branch pipes 3 below the purification tank 1, and a solenoid valve 201 is arranged on the main pipe 2; Sealing component, the sealing component is arranged in the purification tank 1, and the sealing component is used to seal the four openings 6.

[0019] In a case of this embodiment, the purification cylinder 5 and the first gear ring 9 are dynamically sealed, and the branch pipe 3 is also sealed at the bottom plate of the purification tank 1. It should be noted that the air distributor 301 and the purification cylinder 5 of the present invention are both prior arts. The purification cylinder 5 is composed of a porous metal frame and is filled with a deoxidation catalyst inside the frame. The present invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical structures and circuit structures, which does not affect the integrity of the present invention.

[0020] The working principle of the present invention: Nitrogen is introduced through the main pipe 2 and then transported to each purification cylinder 5 through the branch pipe 3. The branch pipe 3 transports nitrogen to the air distributor 301, and the air distributor 301 evenly injects nitrogen into the purification cylinder 5. Then the nitrogen passes through the modular catalyst bed 7, and at this time, a deoxidation reaction will occur, that is, the catalyst in the modular catalyst bed 7 will adsorb the oxygen in the nitrogen. The purified nitrogen after deoxidation will gush out from the opening 6 and be discharged from the purification tank 1 through the exhaust pipe 4. Since there is only the opening 6 as the only gas outlet on the purification cylinder 5, the modular catalyst bed 7 near the opening 6 will participate more in the deoxidation reaction. After the purification tank 1 has worked for a long time, the adsorption capacity of the catalyst at the modular catalyst bed 7 near the opening 6 will decrease. At this time, the first gear ring 9 is driven to rotate by the driving component, and the convex block 901 on the inner wall of the first gear ring 9 is stuck in the card slot 701 at the bottom of the modular catalyst bed 7. In this way, the rotation of the first gear ring 9 can drive the modular catalyst bed 7 to rotate in the purification cylinder 5, so as to change the position of the modular catalyst bed 7 corresponding to the opening 6. Then, sufficient time of deoxidation work is carried out until the adsorption capacity of the catalyst in this area on the modular catalyst bed 7 also decreases. The modular catalyst bed 7 is rotated again by the rotation of the first gear ring 9, and the area of the modular catalyst bed 7 facing the opening 6 is changed again until the first gear ring 9 drives the modular catalyst bed 7 to rotate 360 degrees, so that the entire area of the modular catalyst bed 7 has participated in sufficient deoxidation reaction. At this time, the entire modular catalyst bed 7 needs to be replaced; At this time, the openings 6 on the four purification cylinders 5 are blocked and sealed by the sealing component. At this time, the space inside the purification cylinder 5 is isolated from the space inside the purification tank 1. Then the solenoid valve 201 on the main pipe 2 is closed, and then the sealing cover 8 is opened. At this time, the purification cylinder 5 is communicated with the external air of the purification tank 1. Then the modular catalyst beds 7 inside the purification cylinder 5 are taken out one by one and new modular catalyst beds 7 are replaced. Note that when inserting the modular catalyst bed 7, it is necessary to ensure that the card slot 701 at the bottom of the modular catalyst bed 7 is aligned with the convex block 901 on the inner wall of the first gear ring 9. Then the sealing cover 8 is resealed, and then the solenoid valve 201 and the opening 6 are opened.

[0021] As Figures 1-5 shown, as a preferred embodiment of the present invention, a handle 702 is fixedly installed on the top of the modular catalyst bed 7.

[0022] In practical application of this embodiment, by setting the handle 702, it is convenient to take out the modular catalyst bed 7 from the purification cylinder 5 and also convenient to install the modular catalyst bed 7 into the purification cylinder 5.

[0023] As Figures 1-9 shown, as a preferred embodiment of the present invention, the sealing assembly includes a fixed block 15, an arc plate 14, a telescopic rod 16 and a linkage assembly. The fixed block 15 is fixedly installed in the purification tank 1, and the four brackets of the fixed block 15 are fixedly connected to the inner wall of the purification tank 1. The four circumferentially arranged telescopic rods 16 are all slidably installed in the fixed block 15, and the four telescopic rods 16 are driven by the linkage assembly to move synchronously. One end of each telescopic rod 16 extending out of the fixed block 15 is fixedly installed with an arc plate 14. When the four telescopic rods 16 contract, the arc plate 14 moves away from the opening 6. When the four telescopic rods 16 extend, the arc plate 14 seals the opening 6.

[0024] Specifically, the linkage assembly includes a round rod 17, a turntable 18, an inclined groove 19 and a straight groove 20. The straight groove 20 is opened in the fixed block 15. The turntable 18 is rotatably installed in the fixed block 15. The inclined groove 19 is opened on the turntable 18, and an included angle is formed between the inclined groove 19 and the straight groove 20. The round rod 17 is fixedly installed on the telescopic rod 16. The round rod 17 is slidably connected to the straight groove 20 and is also slidably connected to the inclined groove 19. A through hole 21 is opened at the bottom of the fixed block 15, and a rotating rod 22 is rotatably installed in the through hole 21. The rotating rod 22 is coaxially fixedly connected to the turntable 18, and the rotating rod 22 is driven to rotate by a first output source built in the purification tank 1.

[0025] In one case of this embodiment, the first output source can be selected from components such as a servo motor and a servo motor, or other mechanisms capable of realizing rotational motion can also be selected. This embodiment does not make specific limitations here.

[0026] In practical application of this embodiment, when it is necessary to seal the opening 6, the rotating rod 22 is driven to rotate by the first output source. The rotating rod 22 will drive the turntable 18 to rotate in the fixed block 15. The rotation of the turntable 18 will drive the position of the round rod 17 to change in the inclined groove 19. Due to the restriction of the straight groove 20 on the round rod 17, the round rod 17 will also slide and change its position in the straight groove 20. At this time, the round rod 17 will drive the telescopic rod 16 to slide in the fixed block 15, so as to achieve the purpose of synchronous expansion and contraction of the four telescopic rods 16. Specifically, Figure 8Taking the shown example, when the turntable 18 rotates counterclockwise, the four telescopic rods 16 will extend synchronously, thereby driving the arc-shaped plate 14 to approach the purification cylinder 5 to block the opening 6. Conversely, when the turntable 18 rotates clockwise, the four telescopic rods 16 will contract synchronously, thereby opening the opening 6. In this way, the four openings 6 can be controlled to open and close synchronously, avoiding the cumbersome steps of operating one by one. Moreover, this sealing method is achieved by the inner arc surface of the arc-shaped plate 14 abutting against the outer circular surface of the purification cylinder 5, and the sealing effect is better through the tight abutment.

[0027] As Figures 1-9 shown, as a preferred embodiment of the present invention, the sealing assembly further includes a sealing strip 501. The sealing strip 501 is fixedly installed on the outer circular surface of the purification cylinder 5 and surrounds the opening 6. When the arc-shaped plate 14 blocks the opening 6, the arc-shaped plate 14 abuts against the sealing strip 501 and causes the sealing strip 501 to deform.

[0028] Specifically, each arc-shaped plate 14 is slidably installed on the second bracket 102, and the second bracket 102 is fixedly connected to the inner wall of the purification tank 1.

[0029] In actual application of this embodiment, in order to further improve the sealing effect of the opening 6, a sealing strip 501 is provided on the outer circular surface of the purification cylinder 5. When the arc-shaped plate 14 tightly abuts against the purification cylinder 5, the arc-shaped plate 14 will abut against the sealing strip 501 and cause the sealing strip 501 to deform, thereby blocking the gap between the arc-shaped plate 14 and the purification cylinder 5, so as to achieve good sealing performance and avoid the problem that there is a gap between the inner and outer pipes in the traditional design of the inner and outer pipes, resulting in a decrease in sealing performance when the outer pipe rotates to achieve the sealing effect; And each arc-shaped plate 14 is slidably installed on the second bracket 102, and the second bracket 102 is fixedly installed on the inner wall of the purification tank 1, thus providing additional support for the movement of the arc-shaped plate 14.

[0030] As Figures 1-4 shown, as a preferred embodiment of the present invention, the driving assembly includes a runner 13, a second gear ring 10, a third gear ring 11 and a gear 12. The runner 13 is rotatably installed in the purification tank 1. The second gear ring 10 is fixedly installed on the outer circular surface of the runner 13. The second gear ring 10 meshes with all four first gear rings 9. The third gear ring 11 is fixedly installed on the rotating shaft of the runner 13. The gear 12 is rotatably installed in the purification tank 1. The gear 12 meshes with the third gear ring 11, and the gear 12 is driven to rotate by a second output source built in the purification tank 1.

[0031] Specifically, the rotating shaft of the runner 13 is sleeved on the rotating rod 22, and the runner 13 is rotatably connected to the rotating rod 22. The first output source and the second output source are both arranged on the bottom plate of the purification tank 1.

[0032] In one case of this embodiment, the second output source can be selected from components such as servo motors and servo motors, and other mechanisms capable of realizing rotational motion can also be selected. This embodiment does not make specific limitations here.

[0033] In the actual application of this embodiment, the first output source and the second output source are arranged on the bottom plate of the purification tank 1. First, the output sources are placed away from the purification nitrogen gas outlet. Second, they are concentrated together for easy management, such as maintenance and debugging. And being arranged inside the purification tank 1 is to avoid having the rotating shafts of the rotating rod 22 and the runner 13 pass through the bottom plate of the purification tank 1, thereby increasing the risk of leakage at the connection points. The runner 13 is rotatably installed on the rotating rod 22. When it is necessary to rotate the modular catalyst bed 7 in the purification cylinder 5, the second output source drives the gear 12 to rotate. The gear 12 meshes with the third toothed ring 11, which causes the gear 12 to drive the third toothed ring 11 to rotate. The third toothed ring 11 drives the runner 13 to rotate synchronously, and the runner 13 drives the four first toothed rings 9 to rotate synchronously. In this way, the position of the modular catalyst bed 7 facing the opening 6 is changed. At this time, the rotating rod 22 driven by the first drive source does not rotate, ensuring the independent operation of the rotating rod 22 and the runner 13 and avoiding the problem of mutual interference.

[0034] The above has described a detailed description of an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equal changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A nitrogen-carbon deoxidation purification device, characterized in that, Comprising: A purification tank (1), an exhaust pipe (4) is connected to the top of the purification tank (1), four first brackets (101) arranged circumferentially are fixedly installed on the inner wall of the purification tank (1), a purification cylinder (5) is fixedly installed on each first bracket (101), the top end of the purification cylinder (5) penetrates through the top of the purification tank (1), and this end is hermetically connected to a sealing cover (8), an air flow distributor (301) is fixedly installed on the bottom plate of the purification cylinder (5), the air flow distributor (301) is communicated with a branch pipe (3), one end of the branch pipe (3) penetrates through the bottom of the purification tank (1), an opening (6) is formed in the purification cylinder (5), the opening (6) faces the exhaust pipe (4), a first gear ring (9) is rotatably installed on the purification cylinder (5), the first gear ring (9) is driven by a driving component to rotate, the first gear ring (9) is located between the air flow distributor (301) and the opening (6), a convex block (901) is fixedly installed on the inner wall of the first gear ring (9), the convex block (901) is located inside the purification cylinder (5), a modular catalyst bed (7) is slidably installed inside the purification cylinder (5), a clamping groove (701) is formed at the bottom end of the modular catalyst bed (7), and the clamping groove (701) is slidably connected to the convex block (901); A main pipe (2), the main pipe (2) is communicated with one end of the four branch pipes (3) located below the purification tank (1), and a solenoid valve (201) is arranged on the main pipe (2); A sealing component, the sealing component is arranged inside the purification tank (1), and the sealing component is used for sealing the four openings (6).

2. The nitrogen-carbon deoxidation purification device according to claim 1, wherein, A handle (702) is fixedly installed on the top of the modular catalyst bed (7).

3. The nitrogen-carbon deoxidation purification device according to claim 1, wherein, The sealing component includes a fixed block (15), an arc-shaped plate (14), a telescopic rod (16) and a linkage component, the fixed block (15) is fixedly installed inside the purification tank (1), the four brackets of the fixed block (15) are fixedly connected to the inner wall of the purification tank (1), the four circumferentially arranged telescopic rods (16) are all slidably installed inside the fixed block (15), and the four telescopic rods (16) are driven by the linkage component to move synchronously. One end of each telescopic rod (16) extending out of the fixed block (15) is fixedly installed with an arc-shaped plate (14). When the four telescopic rods (16) contract, the arc-shaped plate (14) moves away from the opening (6). When the four telescopic rods (16) extend, the arc-shaped plate (14) seals the opening (6).

4. A nitrogen-carbon deoxidation purification device according to claim 3, characterized in that, The linkage assembly includes a round rod (17), a turntable (18), an inclined slot (19) and a straight slot (20). The straight slot (20) is formed in the fixed block (15). The turntable (18) is rotatably installed in the fixed block (15). The inclined slot (19) is formed in the turntable (18). An angle is formed between the inclined slot (19) and the straight slot (20). The round rod (17) is fixedly installed on the telescopic rod (16). The round rod (17) is slidably connected to the straight slot (20) and is also slidably connected to the inclined slot (19). A through hole (21) is formed at the bottom of the fixed block (15). A rotating rod (22) is rotatably installed in the through hole (21). The rotating rod (22) is coaxially and fixedly connected to the turntable (18), and the rotating rod (22) is driven to rotate by a first output source built in the purification tank (1).

5. The nitrogen carbon deoxidation purification device according to claim 3, characterized in that, The sealing assembly further includes a sealing strip (501). The sealing strip (501) is fixedly installed on the outer cylindrical surface of the purification cylinder (5) and surrounds the opening (6). When the arc-shaped plate (14) seals the opening (6), the arc-shaped plate (14) abuts against the sealing strip (501) and causes the sealing strip (501) to deform.

6. The nitrogen-carbon deoxidation purification device according to claim 3, characterized in that, Each arc-shaped plate (14) is slidably installed on the second bracket (102). The second bracket (102) is fixedly connected to the inner wall of the purification tank (1).

7. A nitrogen-carbon deoxidation purification device according to claim 4, characterized in that, The driving assembly includes a runner (13), a second gear ring (10), a third gear ring (11) and a gear (12). The runner (13) is rotatably installed in the purification tank (1). The second gear ring (10) is fixedly installed on the outer cylindrical surface of the runner (13). The second gear ring (10) meshes with all four first gear rings (9). The third gear ring (11) is fixedly installed on the rotating shaft of the runner (13). The gear (12) is rotatably installed in the purification tank (1). The gear (12) meshes with the third gear ring (11), and the gear (12) is driven to rotate by a second output source built in the purification tank (1).

8. A nitrogen-carbon deoxidation purification device according to claim 7, characterized in that, The rotating shaft of the runner (13) is sleeved on the rotating rod (22). The runner (13) is rotatably connected to the rotating rod (22). Both the first output source and the second output source are arranged on the bottom plate of the purification tank (1).

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