Purification device for high-purity nitrogen

Abstract

The invention belongs to the technical field of nitrogen purification, and discloses a purification device for high-purity nitrogen, which comprises a condensation box main body, one side of the condensation box main body is fixedly connected with a gas inlet, the other side of the condensation box main body is fixedly connected with a gas outlet, and the bottom of the condensation box main body is fixedly connected with a plurality of supporting legs. A driving motor is started, the driving motor rotates to drive a bearing disc to rotate, a first fan-shaped discharging groove rotates along with the bearing disc when the bearing disc rotates, after the first fan-shaped discharging groove is far away from a display column, the display column is ejected out by the bearing disc, the bearing disc pushes the display column to move at the moment, and the display column moves to drive a limiting plate to move; the limiting plate moves to drive the spring to be compressed, at the moment, whether the first fan-shaped discharging groove and the second fan-shaped discharging groove are staggered or not can be judged by checking the length of the portion, stretching out of the outer side of the condensation box body, of the display column, and therefore the internal sealed environment is guaranteed, the cooling effect is improved, and the reaction rate is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of nitrogen purification, and in particular relates to a purification device for high-purity nitrogen. Background Art

[0002] Removing impurities from nitrogen by physical or chemical methods refers to removing impurities from nitrogen by physical or chemical methods. Industrial nitrogen impurity removal mainly removes oxygen from nitrogen to improve the purity of nitrogen. In the existing industrial nitrogen purification process, liquid air separation is usually used to produce nitrogen and purify nitrogen. It is based on the difference in boiling points between nitrogen and oxygen in the air to separate them, thereby obtaining nitrogen of higher purity. The steps of separating liquid air to produce nitrogen include air compression, cooling and liquefaction, distillation separation, nitrogen collection and safety monitoring.

[0003] However, the existing purification devices for high-purity nitrogen often have some problems in actual use: in the process of purifying nitrogen by liquid air separation method in the prior art, the temperature needs to be lowered during the cooling and liquefaction process. During the initial cooling process, when the temperature drops to zero degrees Celsius, the water in the air will condense into ice, and when the temperature drops to minus 79 degrees Celsius, the carbon dioxide will freeze into dry ice. In this process, impurities, water and carbon dioxide in the air can be effectively removed. At this time, the condensed water and carbon dioxide in the air will be deposited at the bottom of the cooling tank. During the purification process, the accumulation of internal ice and dry ice will affect the reaction speed. After too much ice and dry ice accumulate, the work needs to be stopped and processed, which greatly affects the work efficiency. Secondly, the reaction process in the prior art only solidifies it naturally by cooling it, and the reaction rate is slow. Summary of the invention

[0004] The object of the present invention is to provide a device for purifying high-purity nitrogen to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a purification device for high-purity nitrogen, comprising a condensation box body, one side of the condensation box body is fixedly connected with an air inlet, the other side of the condensation box body is fixedly connected with an air outlet, a plurality of support legs are fixedly connected to the bottom of the condensation box body, the middle of the plurality of support legs is fixedly connected with a support plate, the middle of the top of the support plate is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a rotating shaft, the top outer side of the rotating shaft is fixedly connected with a carrying plate, a first fan-shaped material discharge trough is provided on one side of the inner part of the carrying plate, a pushing rod is provided on the top of the carrying plate, the pushing rod is fixedly connected to the condensation box body, a fixed circular plate is provided at the bottom of the carrying plate, the fixed circular plate is fixedly connected to the condensation box body, a second fan-shaped material discharge trough is provided on one side of the fixed circular plate, a pushing component is correspondingly provided on one side of the carrying plate, and a vibration component is provided on one side of the top of the carrying plate.

[0006] Preferably, a rotating circular plate is arranged below the fixed circular plate, the rotating circular plate is fixedly connected to the rotating shaft, a quantitative baffle is fixedly connected to the top of the rotating circular plate, the quantitative baffle is fixedly connected to the condensation box body, a discharge port is fixedly connected to one side of the condensation box body, and the discharge port is arranged corresponding to the quantitative baffle.

[0007] Preferably, the pushing assembly includes a limit groove, which is opened on one side of the interior of the condensation box body, a spring is fixedly connected to the interior of the limit groove, one side of the spring is fixedly connected to a limit plate, a display column is fixedly connected to the interior of the limit plate, the spring is sleeved on the outside of the display column, and the limit groove corresponds to the spring, the limit plate and the display column respectively.

[0008] Preferably, the vibration assembly includes a first elastic metal sheet, which is fixedly connected to the condensation box body, two second elastic metal sheets are respectively arranged on both sides of the first elastic metal sheet, and the two second elastic metal sheets are fixedly connected to the condensation box body, two impact rods are respectively fixedly connected on both sides of the first elastic metal sheet, a toggle rod is fixedly connected to one side of the top of the supporting plate, a sliding groove is opened inside the push rod, and the sliding groove is arranged corresponding to the toggle rod.

[0009] Preferably, the supporting plate and the push rod are in contact with each other, the supporting plate and the fixed circular plate are in contact with each other, the first fan-shaped material trough and the second fan-shaped material trough are arranged corresponding to each other, and the size of the first fan-shaped material trough is smaller than that of the second fan-shaped material trough.

[0010] Preferably, the first elastic metal sheet and the second elastic metal sheet are both made of elastic metal.

[0011] Preferably, the first elastic metal sheet and the impact rod are not in contact with the carrying plate, the toggle rod is respectively arranged corresponding to the first elastic metal sheet and the second elastic metal sheet, and the triangular part at the top of the toggle rod is higher than the bottom of the first elastic metal sheet and the toggle rod.

[0012] Preferably, the push rod is made of metal, and the first elastic metal sheet and the toggle rod are higher than the push rod.

[0013] Preferably, the opening of the quantitative baffle is the same width as the outlet of the discharge port, and the inlet of the quantitative baffle is gradually tightened.

[0014] Preferably, the first fan-shaped feed chute, the rotating circular plate and the quantitative baffle are all made of cold-resistant materials.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention drives the carrying plate to rotate by driving the motor, and the rotation of the carrying plate drives the ice and dry ice to fall onto the surface of the rotating circular plate. At this time, since the rotating circular plate rotates along the rotating shaft, the rotation of the rotating circular plate will drive the ice and dry ice on its surface to be discharged outward along the trajectory of the quantitative baffle due to the centrifugal force, effectively avoiding the accumulation of ice and dry ice inside the condensation box body, avoiding the need to stop working and deal with the excessive accumulation of ice and dry ice, greatly improving the work efficiency, and at the same time, due to the shape design of the quantitative baffle, the discharge of ice and dry ice will be quantitatively discharged according to the size of its outlet, and the amount of discharge is limited, thereby improving the production efficiency and facilitating the subsequent treatment of ice and dry ice.

[0016] 2. The present invention starts a driving motor, and the driving motor rotates to drive the carrier plate to rotate. When the carrier plate rotates, the first fan-shaped feed chute rotates along with the carrier plate. When the first fan-shaped feed chute is away from the display column, the display column is pushed out by the carrying plate. At this time, the carrying plate pushes the display column to move, and the movement of the display column drives the limit plate to move. The movement of the limit plate drives the spring to compress. At this time, the length of the display column extending out of the outside of the condensation box body can be checked to determine whether the first fan-shaped feed chute and the second fan-shaped feed chute are staggered, thereby ensuring the internal sealing environment, improving the cooling effect, and accelerating the reaction rate.

[0017] 3. The present invention starts a driving motor, which drives the toggle lever to rotate. During the rotation of the toggle lever, the first elastic metal sheet and the second elastic metal sheet will be hit. The first elastic metal sheet and the second elastic metal sheet will vibrate after being hit. At the same time, when the first elastic metal sheet is vibrating, the left and right swinging caused by the vibration will drive the impact rods on both sides to hit the second elastic metal sheets on both sides, thereby making the vibration more intense and having a better vibration effect. The mechanical vibration of the first elastic metal sheet and the second elastic metal sheet will generate sound waves, which are transmitted through the inner wall of the metal, so that water and carbon dioxide will generate tiny bubbles in the process of solidification from liquid. These bubbles can serve as gasification nuclei to accelerate the decomposition rate of carbonic acid, thereby accelerating the solidification process of water and carbon dioxide, thereby improving work efficiency and accelerating the purification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the condensation box body of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center; Figure 4 This is a schematic diagram of the display column structure of the present invention; Figure 5 This is a schematic diagram of the discharge port structure of the present invention; Figure 6 It is a schematic diagram of the structure of the rotating circular plate of the present invention; Figure 7 It is a schematic diagram of the structure of the vibration component of the present invention.

[0019] In the figure: 1. condensation box body; 2. air inlet; 3. air outlet; 4. support leg; 5. support plate; 6. drive motor; 7. rotating shaft; 8. carrier plate; 9. first fan-shaped discharge chute; 902. second fan-shaped discharge chute; 10. push rod; 11. fixed circular plate; 12. rotating circular plate; 13. quantitative baffle; 14. discharge port; 15. limit groove; 16. spring; 17. limit plate; 18. display column; 19. first elastic metal sheet; 20. second elastic metal sheet; 21. impact rod; 22. toggle rod; 23. sliding groove. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 7 As shown, an embodiment of the present invention provides a purification device for high-purity nitrogen, including a condensation box body 1, one side of the condensation box body 1 is fixedly connected with an air inlet 2, the other side of the condensation box body 1 is fixedly connected with an air outlet 3, a plurality of support legs 4 are fixedly connected to the bottom of the condensation box body 1, a support plate 5 is fixedly connected to the middle of the plurality of support legs 4, a driving motor 6 is fixedly connected to the middle of the top of the support plate 5, a rotating shaft 7 is fixedly connected to the output end of the driving motor 6, a carrying plate 8 is fixedly connected to the top outer side of the rotating shaft 7, a first fan-shaped material discharge chute 9 is opened on one side of the inner part of the carrying plate 8, a pushing rod 10 is arranged on the top of the carrying plate 8, the pushing rod 10 is fixedly connected to the condensation box body 1, a fixed circular plate 11 is arranged at the bottom of the carrying plate 8, the fixed circular plate 11 is fixedly connected to the condensation box body 1, a second fan-shaped material discharge chute 902 is opened on one side of the fixed circular plate 11, a pushing component is correspondingly arranged on one side of the carrying plate 8, a vibration component is arranged on one side of the top of the carrying plate 8, and a rotating circular plate 1 is arranged below the fixed circular plate 11 2. The rotating circular plate 12 is fixedly connected to the rotating shaft 7. A quantitative baffle 13 is fixedly connected to the top of the rotating circular plate 12. The quantitative baffle 13 is fixedly connected to the condensing box body 1. A discharge port 14 is fixedly connected to one side of the condensing box body 1. The discharge port 14 is arranged corresponding to the quantitative baffle 13. The driving motor 6 rotates to drive the carrying plate 8 to rotate. The carrying plate 8 rotates to drive the ice and dry ice to fall onto the surface of the rotating circular plate 12. At this time, since the rotating circular plate 12 rotates with the rotating shaft 7, the rotation of the rotating circular plate 12 will drive the ice and dry ice on its surface to be discharged outward along the trajectory of the quantitative baffle 13 due to the centrifugal force, effectively avoiding the accumulation of ice and dry ice inside the condensing box body 1, avoiding the need to stop working and deal with ice and dry ice after excessive accumulation, greatly improving the work efficiency. At the same time, due to the shape design of the quantitative baffle 13, the discharge of ice and dry ice will be quantitatively discharged according to the size of its outlet, and the amount of discharge is limited, thereby improving the production efficiency and facilitating the subsequent treatment of ice and dry ice.

[0022] Among them, the pushing component includes a limit groove 15, the limit groove 15 is opened on one side of the inside of the condensation box body 1, a spring 16 is fixedly connected inside the limit groove 15, one side of the spring 16 is fixedly connected to a limit plate 17, a display column 18 is fixedly connected inside the limit plate 17, the spring 16 is sleeved on the outside of the display column 18, and the limit groove 15 is respectively connected to the spring 16. The limit plate 17 corresponds to the display column 18. By starting the drive motor 6, the drive motor 6 rotates to drive the carrying plate 8 to rotate. When the carrying plate 8 rotates, the first fan-shaped discharge chute 9 rotates with the carrying plate 8. When the first fan-shaped discharge chute 9 is away from the display column 18, the display column 18 is pushed out by the carrying plate 8. At this time, the carrying plate 8 pushes the display column 18 to move, and the movement of the display column 18 drives the limit plate 17 to move. The movement of the limit plate 17 drives the spring 16 to compress. At this time, the length of the display column 18 extending out of the outside of the condensation box body 1 can be checked to determine whether the first fan-shaped discharge chute 9 and the second fan-shaped discharge chute 902 are staggered, thereby ensuring the internal sealing environment, thereby improving the cooling effect and accelerating the reaction rate.

[0023] Among them, the vibration component includes a first elastic metal sheet 19, the first elastic metal sheet 19 is fixedly connected to the condensation box body 1, two second elastic metal sheets 20 are respectively arranged on both sides of the first elastic metal sheet 19, and the two second elastic metal sheets 20 are fixedly connected to the condensation box body 1, two impact rods 21 are respectively fixedly connected on both sides of the first elastic metal sheet 19, a toggle rod 22 is fixedly connected to one side of the top of the supporting plate 8, a sliding groove 23 is opened inside the push rod 10, and the sliding groove 23 is arranged corresponding to the toggle rod 22. Sound waves are generated by the vibration of the first elastic metal sheet 19 and the impact rod 21, and the sound waves are transmitted through the metal inner wall, so that water and carbon dioxide generate tiny bubbles in the process of solidification from liquid. These bubbles can serve as gasification nuclei to accelerate the decomposition rate of carbonic acid, thereby accelerating the solidification process of water and carbon dioxide, thereby improving work efficiency and accelerating the purification rate.

[0024] Among them, the carrying plate 8 and the pushing rod 10 are in contact with each other, the carrying plate 8 and the fixed circular plate 11 are in contact with each other, the first fan-shaped discharge trough 9 and the second fan-shaped discharge trough 902 are arranged corresponding to each other, the size of the first fan-shaped discharge trough 9 is smaller than the second fan-shaped discharge trough 902, and the carrying plate 8 and the pushing rod 10 are in contact with each other. In order to ensure that the pushing rod 10 can better push the ice and dry ice on the surface of the carrying plate 8 to the surface of the rotating circular plate 12 to complete the discharging, the size of the first fan-shaped discharge trough 9 is slightly smaller than the second fan-shaped discharge trough 902 to facilitate discharge and avoid the accumulation of materials on the surface of the second fan-shaped discharge trough 902 during discharge, resulting in poor discharge effect.

[0025] The first elastic metal sheet 19 and the second elastic metal sheet 20 are both made of elastic metal, which can generate vibration better, thereby improving the reaction rate.

[0026] Among them, the first elastic metal sheet 19 and the impact rod 21 are not in contact with the carrying plate 8, and the toggle rod 22 is respectively arranged corresponding to the first elastic metal sheet 19 and the second elastic metal sheet 20. The triangular part at the top of the toggle rod 22 is higher than the bottom of the first elastic metal sheet 19 and the toggle rod 22. The push rod 10 is made of metal. The heights of the first elastic metal sheet 19 and the toggle rod 22 are higher than the push rod 10. The triangular part at the top of the toggle rod 22 is higher than the bottom of the first elastic metal sheet 19 and the toggle rod 22, so that the triangular area can easily impact the first elastic metal sheet 19 and the toggle rod 22, thereby generating sound waves, and the hypotenuse of the triangle is more conducive to the continuity of movement without jamming.

[0027] Among them, the opening of the quantitative baffle 13 is the same as the outlet width of the discharge port 14, and the inlet shape of the quantitative baffle 13 is gradually tightened. The first fan-shaped material chute 9, the rotating circular plate 12 and the quantitative baffle 13 are all made of cold-resistant materials. The first fan-shaped material chute 9, the rotating circular plate 12 and the quantitative baffle 13 are all made of cold-resistant materials to avoid damage to the material structure by the low temperature environment and improve the service life.

[0028] Working principle: After the air that has undergone preliminary dust removal is introduced into the interior of the condensation box body 1 through the air inlet 2 for cooling, when the temperature inside the condensation box body 1 reaches 0°, the water in the air will solidify into ice and accumulate on the surface of the first fan-shaped discharge chute 9. When the temperature reaches minus 79 degrees Celsius, the carbon dioxide in the air will solidify into dry ice. At this time, the drive motor 6 is started, and the rotation of the drive motor 6 drives the carrier plate 8 to rotate. The rotation of the carrier plate 8 drives the toggle rod 22 to rotate. The toggle rod 22 will hit the first elastic metal sheet 19 and the second elastic metal sheet 20 during the rotation process. The first elastic metal sheet 19 and the second elastic metal sheet 20 The metal sheet 20 will vibrate after being hit. At the same time, when the first elastic metal sheet 19 is vibrating, the left and right swing will drive the impact rods 21 on both sides to hit the second elastic metal sheets 20 on both sides, so that the vibration is more intense and the vibration effect is better. The mechanical vibration of the first elastic metal sheet 19 and the second elastic metal sheet 20 will generate sound waves, which are transmitted through the inner wall of the metal, so that water and carbon dioxide will generate tiny bubbles in the process of solidification from liquid. These bubbles can serve as gasification nuclei to accelerate the decomposition rate of carbonic acid, thereby accelerating the solidification process of water and carbon dioxide, thereby improving work efficiency and accelerating the purification rate. When the water and carbon dioxide in the air are continuously solidified, a large amount of ice and dry ice are formed on the surface of the first fan-shaped feeding trough 9, and the driving motor 6 is started at this time. The driving motor 6 rotates to drive the rotating shaft 7 to rotate, and the rotating shaft 7 rotates to drive the supporting plate 8 to rotate. When the supporting plate 8 rotates, it drives the ice and dry ice on its surface to move. In the process of moving, the ice and dry ice are blocked by the pushing rod 10 and fall through the first fan-shaped feeding trough 9 to the surface of the fixed circular plate 11. After falling into the surface of the fixed circular plate 11, they continue to be pushed by the side of the first fan-shaped feeding trough 9. When they are pushed to the second fan-shaped feeding trough 902, the ice and dry ice will continue to fall. The rotating circular plate 12 is rotated along with the rotating shaft 7, and the rotating circular plate 12 rotates due to the centrifugal force, which drives the ice and dry ice on its surface to be discharged outward along the track of the quantitative baffle 13, effectively avoiding the accumulation of ice and dry ice inside the condensation box body 1, and avoiding the need to stop working and deal with the excessive accumulation of ice and dry ice, which greatly improves the work efficiency. At the same time, due to the shape design of the quantitative baffle 13, the discharge of ice and dry ice will be quantitatively discharged according to the size of its outlet, and the amount of discharge is limited, which improves the production efficiency and facilitates the subsequent treatment of ice and dry ice. After the ice and dry ice are discharged, since a low-temperature environment is required inside, the drive motor 6 is started, and the drive motor 6 rotates to drive the carrying plate 8 to rotate. When the carrying plate 8 rotates, the first fan-shaped discharge chute 9 rotates with the carrying plate 8. When the first fan-shaped discharge chute 9 is away from the display column 18, the display column 18 is pushed out by the carrying plate 8. At this time, the carrying plate 8 pushes the display column 18 to move, and the movement of the display column 18 drives the limit plate 17 to move. The movement of the limit plate 17 drives the spring 16 to compress. At this time, the length of the display column 18 extending out of the outside of the condensation box body 1 can be checked to determine whether the first fan-shaped discharge chute 9 and the second fan-shaped discharge chute 902 are staggered, thereby ensuring the internal sealed environment, thereby improving the cooling effect and accelerating the reaction rate.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A purification device for high-purity nitrogen, comprising a condenser box body (1), one side of the condenser box body (1) is fixedly connected to an air inlet (2), the other side of the condenser box body (1) is fixedly connected to an air outlet (3), a bottom of the condenser box body (1) is fixedly connected to a plurality of support legs (4), a support plate (5) is fixedly connected to the middle of the plurality of support legs (4), a drive motor (6) is fixedly connected to the middle of the top of the support plate (5), characterized in that: The output end of the driving motor (6) is fixedly connected to a rotating shaft (7), the top outer side of the rotating shaft (7) is fixedly connected to a carrying plate (8), one side of the inside of the carrying plate (8) is provided with a first fan-shaped material discharge trough (9), the top of the carrying plate (8) is provided with a pushing rod (10), the pushing rod (10) is fixedly connected to the condensation box body (1), the bottom of the carrying plate (8) is provided with a fixed circular plate (11), the fixed circular plate (11) is fixedly connected to the condensation box body (1), one side of the fixed circular plate (11) is provided with a second fan-shaped material discharge trough (902), one side of the carrying plate (8) is correspondingly provided with a pushing component, and one side of the top of the carrying plate (8) is provided with a vibration component.

2. A purification device for high-purity nitrogen according to claim 1, characterized in that: A rotating circular plate (12) is arranged below the fixed circular plate (11); the rotating circular plate (12) is fixedly connected to the rotating shaft (7); a quantitative baffle (13) is fixedly connected to the top of the rotating circular plate (12); the quantitative baffle (13) is fixedly connected to the condensation box body (1); a discharge port (14) is fixedly connected to one side of the condensation box body (1); the discharge port (14) is arranged corresponding to the quantitative baffle (13).

3. A purification device for high-purity nitrogen according to claim 2, characterized in that: The pushing assembly comprises a limit groove (15), the limit groove (15) being arranged on one side inside the condensation box body (1), a spring (16) being fixedly connected inside the limit groove (15), one side of the spring (16) being fixedly connected to a limit plate (17), a display column (18) being fixedly connected inside the limit plate (17), the spring (16) being sleeved on the outside of the display column (18), and the limit groove (15) corresponding to the spring (16), the limit plate (17) and the display column (18) respectively.

4. A purification device for high-purity nitrogen according to claim 3, characterized in that: The vibration assembly comprises a first elastic metal sheet (19), the first elastic metal sheet (19) being fixedly connected to the condensation box body (1), two second elastic metal sheets (20) being respectively arranged on both sides of the first elastic metal sheet (19), the two second elastic metal sheets (20) being both fixedly connected to the condensation box body (1), two impact rods (21) being respectively fixedly connected on both sides of the first elastic metal sheet (19), a toggle rod (22) being fixedly connected to one side of the top of the carrier plate (8), a sliding groove (23) being provided inside the push rod (10), the sliding groove (23) being arranged corresponding to the toggle rod (22).

5. A purification device for high-purity nitrogen according to claim 4, characterized in that: The supporting plate (8) and the pushing rod (10) are in contact with each other, the supporting plate (8) and the fixed circular plate (11) are in contact with each other, the first fan-shaped material discharge trough (9) and the second fan-shaped material discharge trough (902) are arranged corresponding to each other, and the size of the first fan-shaped material discharge trough (9) is smaller than that of the second fan-shaped material discharge trough (902).

6. A purification device for high-purity nitrogen according to claim 5, characterized in that: The first elastic metal sheet (19) and the second elastic metal sheet (20) are both made of elastic metal.

7. A purification device for high-purity nitrogen according to claim 6, characterized in that: The first elastic metal sheet (19) and the impact rod (21) are not in contact with the carrier plate (8); the toggle rod (22) is respectively arranged corresponding to the first elastic metal sheet (19) and the second elastic metal sheet (20); and the triangular portion at the top of the toggle rod (22) is higher than the bottom of the first elastic metal sheet (19) and the toggle rod (22).

8. A purification device for high-purity nitrogen according to claim 7, characterized in that: The push rod (10) is made of metal, and the first elastic metal sheet (19) and the toggle rod (22) are higher than the push rod (10).

9. A purification device for high-purity nitrogen according to claim 8, characterized in that: The opening of the quantitative baffle (13) has the same width as the outlet of the discharge port (14), and the inlet of the quantitative baffle (13) is gradually tightened.

10. A purification device for high-purity nitrogen according to claim 9, characterized in that: The first fan-shaped material discharge chute (9), the rotating circular plate (12) and the quantitative baffle (13) are all made of cold-resistant materials.

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