Low-temperature rectification device for air separation process

Abstract

The utility model discloses a low-temperature rectification device for an air separation process, and relates to the technical field of low-temperature rectification devices. The low-temperature rectification device for the air separation process comprises a rectification box, the upper side surface of the rectification box is rotationally connected with a rotating shaft, the lower end of the rotating shaft rotationally penetrates into the rectification box, the outer surface of the rotating shaft is rotationally connected with a transverse rotating plate, and the top wall of the rectification box is rotationally connected with a rotating ring; an L-shaped rod is fixedly connected to the lower side surface of the rotating ring, a cleaning plate is fixedly connected to the end, away from the rotating ring, of the L-shaped rod, two mounting plates are fixedly connected to the lower side surface of the rotating ring, sliding grooves are formed in the surfaces of the close sides of the two mounting plates correspondingly, and springs are fixedly connected to the bottom walls of the sliding grooves; according to the cleaning device for the inner wall of the rectification box, when the inner wall of the rectification box needs to be cleaned, the cleaning plate can be indirectly driven to rotate through the rotating shaft conveniently, so that cleaning is completed, the cleaning process is convenient, and the cleaning efficiency of the inner wall of the rectification box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cryogenic distillation devices, in particular to a cryogenic distillation device for air separation process. Background Art

[0002] As a common component separation method, distillation is widely used in chemical, petroleum, pharmaceutical, pesticide, food and other industries. It is a thermodynamic separation device that uses the different boiling points of components in a mixed liquid or liquid-solid system to evaporate the low-boiling component and then condense it to separate the entire component. It is a unit operation process that combines the two unit operations of evaporation and condensation.

[0003] For example, the Chinese utility model patent with patent publication number CN217876766U includes a distillation box, the interior of the distillation box is connected to a vertical rotating rod, and a rotatable horizontal rotating plate is arranged on the outside of the vertical rotating rod for disturbing the air inside the distillation box; a first driving mechanism for rotating the vertical rotating rod is arranged on the top of the distillation box; a second driving mechanism for rotating the horizontal rotating plate is installed inside the vertical rotating rod, and the first driving mechanism includes a driving motor, and a first transmission gear is fixed to the output end of the driving motor. Through the first driving mechanism and the second driving mechanism, the utility model can make the vertical rotating rod rotate inside the distillation box, and make the horizontal rotating plate rotate inside the vertical rotating rod, so that the air inside the distillation box is disturbed, thereby improving the separation efficiency of the air. However, after distillation, some residues will be attached to the inner wall of the distillation box, and these residues will affect the purity and quality of the subsequent distillation, and the cleaning of the inner wall of the distillation box is relatively cumbersome and difficult. In view of this, we propose a low-temperature distillation device for air separation process. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art and to provide a cryogenic distillation device for air separation process, which can solve the problem of inconvenience in cleaning the attachments on the inner wall of the distillation box.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a low-temperature distillation device for an air separation process, comprising a distillation box, the upper side surface of the distillation box is rotatably connected with a rotating shaft, the lower end of the rotating shaft rotates and penetrates into the interior of the distillation box, the outer surface of the rotating shaft is rotatably connected with a transverse rotating plate, the top wall of the distillation box is rotatably connected with a rotating ring, the lower side surface of the rotating ring is fixedly connected with an L-shaped rod, the end of the L-shaped rod away from the rotating ring is fixedly connected with a cleaning plate, the lower side surface of the rotating ring is fixedly connected with two mounting plates, the side surfaces of the two mounting plates close to each other are respectively provided with sliding grooves, the bottom wall of the sliding groove is fixedly connected with a spring, the upper ends of the two springs are fixedly connected with a pressure plate, the pressure plate is slidably connected to the sliding groove, the outer surface of the rotating shaft located inside the distillation box is sleeved with a driving disk, the upper side surface of the distillation box is provided with a through groove extending into the interior thereof, and a driving assembly is arranged on the distillation box.

[0006] Preferably, the driving assembly includes an electric push rod, which is fixedly connected to the upper surface of the distillation box, and the lower end of the electric push rod extends into the interior of the distillation box through a through groove. A roller is provided at the lower end of the electric push rod, and a slide groove is provided on the upper surface of the pressure plate, and the roller is adapted to the slide groove.

[0007] Preferably, a motor is fixedly connected to the upper surface of the distillation box, and a rotating rod is fixedly connected to the output end of the motor.

[0008] Preferably, the outer surface of the rotating rod is sleeved with a gear, and the outer surface of the rotating shaft is provided with teeth.

[0009] Preferably, the teeth are meshed with the gears, and a displacement rod is provided in the internal sliding sleeve of the rotating shaft, and the upper end of the displacement rod slides through the upper surface of the rotating shaft.

[0010] Preferably, a reset disk is sleeved on the outer surface of the displacement rod, and a second spring is fixedly connected to the lower end of the reset disk.

[0011] Preferably, the lower end of the second spring is fixedly connected to the upper end of the rotating shaft, the upper end of the rotating rod is fixedly connected to a driving ring, and the lower surface of the driving ring is fixedly connected to an inclined block.

[0012] Preferably, a rotating assembly is disposed inside the rotating shaft, and the lower end of the displacement rod is fixedly connected to the rotating assembly.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The air separation process uses a low-temperature distillation device. During the normal distillation process, the horizontal rotating plate is driven to rotate by the rotating shaft. When the inner wall of the distillation box needs to be cleaned, the pressure plate can be driven to descend synchronously by driving the drill. When the pressure plate descends, the spring is compressed synchronously, and its own movement trajectory is limited by the sliding groove. After the pressure plate descends, its lower surface contacts the upper surface of the driving plate, and then the friction between the two drives the pressure plate to rotate with the driving plate. When the pressure plate rotates, it will synchronously drive the rotating ring to rotate. After the rotating ring rotates, it cooperates with the L-shaped rod to drive the cleaning plate to clean the inner wall of the distillation box. Through the above structure, when the inner wall of the distillation box needs to be cleaned, it can be more convenient to indirectly drive the cleaning plate to rotate through the rotating shaft to complete the cleaning. The cleaning process is more convenient, which improves the efficiency of cleaning the inner wall of the distillation box.

[0015] (2) The air separation process uses a cryogenic distillation device. When the rotating rod rotates, it will synchronously drive the upper driving ring to rotate. After the driving ring rotates, it drives the inclined block to rotate. After the inclined block moves, it uses its inclined surface to squeeze the displacement rod, so that the displacement rod moves downward. During the movement, the displacement rod cooperates with the reset disk to compress the second spring. After the inclined block passes, the displacement rod is reset by the second spring. When the displacement rod moves, the rotating assembly inside the rotating shaft drives the horizontal rotating plate to rotate. Through the above structure, no additional structure drive is required when driving the horizontal rotating plate to rotate, which can improve energy utilization and simultaneously reduce the production cost of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic structural diagram of a cryogenic distillation device for air separation process of the utility model;

[0018] Figure 2 This is a first cross-sectional schematic diagram of the distillation box of the utility model;

[0019] Figure 3 This is a second cross-sectional schematic diagram of the distillation box of the utility model;

[0020] Figure 4 This is a schematic diagram of the sliding slot of the utility model;

[0021] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 6 for Figure 3 Enlarged view of point B in the middle.

[0023] Figure numerals: 1, distillation box; 2, rotating shaft; 3, horizontal rotating plate; 4, rotating ring; 5, L-shaped rod; 6, cleaning plate; 7, mounting plate; 8, sliding groove; 9, spring; 10, pressure plate; 11, driving plate; 12, through groove; 13, electric push rod; 14, roller; 15, slide groove; 16, motor; 17, rotating rod; 18, gear; 19, teeth; 20, displacement rod; 21, reset plate; 22, second spring; 23, inclined block; 24, driving ring. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] See also Figure 1-6 The utility model provides a technical solution: a low-temperature distillation device for air separation process, comprising a distillation box 1, the upper side surface of the distillation box 1 is rotatably connected with a rotating shaft 2, the lower end of the rotating shaft 2 rotates and penetrates into the interior of the distillation box 1, the outer surface of the rotating shaft 2 is rotatably connected with a transverse rotating plate 3, the top wall of the distillation box 1 is rotatably connected with a rotating ring 4, the lower side surface of the rotating ring 4 is fixedly connected with an L-shaped rod 5, and the end of the L-shaped rod 5 away from the rotating ring 4 is fixedly connected with a cleaning plate 6, the lower side surface of the rotating ring 4 is fixedly connected with two mounting plates 7, the side surfaces of the two mounting plates 7 close to each other are respectively provided with sliding grooves 8, the bottom wall of the sliding groove 8 is fixedly connected with a spring 9, the upper ends of the two springs 9 are fixedly connected with a pressure plate 10, the pressure plate 10 is slidably connected with the sliding groove 8, the outer surface of the rotating shaft 2 located inside the distillation box 1 is sleeved with a driving disk 11, and the upper side surface of the distillation box 1 is provided with a through groove 12 extending into the interior thereof, The distillation box 1 is provided with a driving assembly. During the normal distillation process, the rotating shaft 2 is used to drive the horizontal rotating plate 3 to rotate. When the inner wall of the distillation box 1 needs to be cleaned, the pressure plate 10 can be driven to descend synchronously by driving the drilling. When the pressure plate 10 descends, the spring 9 will be compressed synchronously, and its own movement trajectory will be limited by the sliding groove 8. After the pressure plate 10 descends, its lower surface will contact the upper surface of the driving plate 11, and then the friction force between the two will drive the pressure plate 10 to rotate with the driving plate 11. When the pressure plate 10 rotates, it will synchronously drive the rotating ring 4 to rotate. After the rotating ring 4 rotates, it cooperates with the L-shaped rod 5 to drive the cleaning plate 6 to clean the inner wall of the distillation box 1. Through the above structure, when the inner wall of the distillation box 1 needs to be cleaned, the cleaning plate 6 can be indirectly driven to rotate by the rotating shaft 2 to complete the cleaning. The cleaning process is more convenient, and the efficiency of cleaning the inner wall of the distillation box 1 is improved.

[0026] Further, the driving assembly includes an electric push rod 13, which is fixedly connected to the upper surface of the distillation box 1, and the lower end of the electric push rod 13 extends into the interior of the distillation box 1 through the through groove 12. A roller 14 is provided at the lower end of the electric push rod 13, and a slide groove 15 is provided on the upper surface of the pressure plate 10. The roller 14 is adapted to the slide groove 15. A motor 16 is fixedly connected to the upper surface of the distillation box 1, and a rotating rod 17 is fixedly connected to the output end of the motor 16. The outer surface of the rotating rod 17 is sleeved with a gear 18, and the outer surface of the rotating shaft 2 is provided with teeth 19, and the teeth 19 are meshed with the gear 18. The internal sliding sleeve of the rotating shaft 2 is provided with a displacement rod 20, the upper end of the displacement rod 20 slides through the upper surface of the rotating shaft 2, the outer surface of the displacement rod 20 is sleeved with a reset disk 21, the lower end of the reset disk 21 is fixedly connected to a second spring 22, the lower end of the second spring 22 is fixedly connected to the upper end of the rotating shaft 2, the upper end of the rotating rod 17 is fixedly connected to a driving ring 24, the lower surface of the driving ring 24 is fixedly connected to an inclined block 23, a rotating assembly is provided inside the rotating shaft 2, the lower end of the displacement rod 20 is fixedly connected to the rotating assembly, and the rotating assembly described in the text is composed of a circular moving block, a vertical sliding bar, and a horizontal rotating The rotating rod, the vertical rectangular block and the third transmission gear are composed. The lower end of the displacement rod 20 is fixedly connected to the circular moving block. The rotating assembly is an existing structure. For details, please refer to the patent publication number CN217876766U. The roller 14 is driven to descend by the electric push rod 13. After the roller 14 descends, the pressure plate 10 is driven to descend, and the friction between the two is reduced by the roller 14 and the slide groove 15. At the same time, during the distillation process, the motor 16 is used to cooperate with the rotating rod 17, the gear 18 and the teeth 19 to drive the rotating shaft 2 to rotate. At the same time, when the rotating rod 17 rotates, it will synchronously drive the upper driving ring 24 to rotate, driving After the ring 24 rotates, it drives the inclined block 23 to rotate. After the inclined block 23 moves, it uses its inclined surface to squeeze the displacement rod 20, so that the displacement rod 20 moves downward. During the movement, the displacement rod 20 cooperates with the reset disk 21 to compress the second spring 22. After the inclined block 23 passes, the second spring 22 is used to reset the displacement rod 20. When the displacement rod 20 moves, the rotating component inside the rotating shaft 2 drives the transverse rotating plate 3 to rotate. Through the above structure, no additional structure drive is required when driving the transverse rotating plate 3 to rotate, which improves energy utilization and simultaneously reduces the production cost of the overall device.

[0027] Working principle: During the normal distillation process, the rotating shaft 2 is used to drive the horizontal rotating plate 3 to rotate. When the inner wall of the distillation box 1 needs to be cleaned, the pressure plate 10 can be driven to descend synchronously by driving the drill. When the pressure plate 10 descends, the spring 9 will be compressed synchronously, and the sliding groove 8 will be used to limit its own movement trajectory. After the pressure plate 10 descends, its lower surface will contact the upper surface of the driving plate 11, and then the friction between the two will drive the pressure plate 10 to rotate with the driving plate 11. When the pressure plate 10 rotates, it will synchronously drive the rotating ring 4 to rotate. After the rotating ring 4 rotates, it cooperates with the L-shaped rod 5 to drive the cleaning plate 6 to clean the inner wall of the distillation box 1. The roller 14 is driven to descend by the electric push rod 13. After the roller 14 descends, it drives the pressure plate 10 to rotate. The disk 10 descends, and the friction between the two is reduced by means of the roller 14 and the slide groove 15. At the same time, during the distillation process, the motor 16 is used to cooperate with the rotating rod 17, the gear 18 and the teeth 19 to drive the rotating shaft 2 to rotate. At the same time, when the rotating rod 17 rotates, it will synchronously drive the upper driving ring 24 to rotate. After the driving ring 24 rotates, it drives the inclined block 23 to rotate. After the inclined block 23 moves, its inclined surface is used to squeeze the displacement rod 20, so that the displacement rod 20 moves downward. During the movement, the displacement rod 20 cooperates with the reset disk 21 to compress the second spring 22. After the inclined block 23 passes, the second spring 22 is used to reset the displacement rod 20. When the displacement rod 20 moves, the rotating assembly inside the rotating shaft 2 drives the horizontal rotating plate 3 to rotate.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A cryogenic distillation apparatus for air separation process, comprising a distillation tank (1), characterized in that: The upper surface of the distillation box (1) is rotatably connected to a rotating shaft (2), the lower end of the rotating shaft (2) is rotatably penetrated into the interior of the distillation box (1), the outer surface of the rotating shaft (2) is rotatably connected to a transverse rotating plate (3), the top wall of the distillation box (1) is rotatably connected to a rotating ring (4), the lower surface of the rotating ring (4) is fixedly connected to an L-shaped rod (5), the end of the L-shaped rod (5) away from the rotating ring (4) is fixedly connected to a cleaning plate (6), and the lower surface of the rotating ring (4) is fixedly connected to two mounting plates. The mounting plates (7) are provided with sliding grooves (8) on the adjacent side surfaces of the two mounting plates (7), the bottom wall of the sliding groove (8) is fixedly connected with a spring (9), the upper ends of the two springs (9) are fixedly connected with a pressure plate (10), the pressure plate (10) is slidably connected with the sliding groove (8), the outer surface of the rotating shaft (2) located inside the distillation box (1) is sleeved with a driving plate (11), the upper side surface of the distillation box (1) is provided with a through groove (12) extending into the interior thereof, and the distillation box (1) is provided with a driving assembly.

2. A cryogenic distillation device for air separation process according to claim 1, characterized in that: The driving assembly comprises an electric push rod (13), the electric push rod (13) is fixedly connected to the upper surface of the distillation box (1), the lower end of the electric push rod (13) extends into the interior of the distillation box (1) through the through groove (12), a roller (14) is arranged at the lower end of the electric push rod (13), and a slide groove (15) is provided on the upper surface of the pressure plate (10), and the roller (14) is adapted to the slide groove (15).

3. A cryogenic distillation device for air separation process according to claim 1, characterized in that: A motor (16) is fixedly connected to the upper surface of the rectification box (1), and a rotating rod (17) is fixedly connected to the output end of the motor (16).

4. A cryogenic distillation device for air separation process according to claim 3, characterized in that: The outer surface of the rotating rod (17) is sleeved with a gear (18), and the outer surface of the rotating shaft (2) is provided with teeth (19).

5. A cryogenic distillation device for air separation process according to claim 4, characterized in that: The teeth (19) are meshedly connected with the gear (18); a displacement rod (20) is provided inside the rotating shaft (2) and the upper end of the displacement rod (20) slides through the upper surface of the rotating shaft (2).

6. A cryogenic distillation device for air separation process according to claim 5, characterized in that: The outer surface of the displacement rod (20) is sleeved with a reset disk (21), and the lower end of the reset disk (21) is fixedly connected to a second spring (22).

7. A cryogenic distillation device for air separation process according to claim 6, characterized in that: The lower end of the second spring (22) is fixedly connected to the upper end of the rotating shaft (2), the upper end of the rotating rod (17) is fixedly connected to a driving ring (24), and the lower surface of the driving ring (24) is fixedly connected to an inclined block (23).

8. A cryogenic distillation device for air separation process according to claim 1, characterized in that: A rotating assembly is arranged inside the rotating shaft (2), and the lower end of the displacement rod (20) is fixedly connected to the rotating assembly.

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