Sectional type rectification device for arsine production

Abstract

The invention provides a sectional type rectification device for arsine production, and belongs to the technical field of rectification devices.The sectional type rectification device comprises a first connecting shell, a second connecting shell is arranged above the first connecting shell, communicating assemblies are installed on the second connecting shell and the first connecting shell, a third connecting pipe is fixedly connected to the first connecting shell, and a third connecting pipe is fixedly connected to the second connecting shell; a fourth connecting pipe is fixedly connected to the second connecting shell, a first electric push rod and a second electric push rod are fixedly connected to the two sides of the first connecting shell respectively, a first pressing plate is fixedly connected to the first electric push rod, a first pressing rod is fixedly connected to the first pressing plate, and a second pressing plate is fixedly connected to the second electric push rod. According to the rectification device, the problems that according to an existing rectification device, the distance between different partition plates in the rectification device cannot be adjusted, and the shielding positions of baffles on the partition plates cannot be synchronously adjusted are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of distillation devices, and particularly to a segmented distillation device for arsine production. Background Art

[0002] Arsine is a colorless, odorless, extremely toxic and highly flammable gas, commonly used in the semiconductor industry, especially in the production of gallium arsenide and other arsenides. In addition, arsine also acts as a reducing agent or gas hydrogenating agent in some organic synthesis reactions as a chemical reagent. The production of arsine requires separation and purification through methods such as distillation to obtain high-purity arsine, and there are still some defects in existing distillation devices.

[0003] The invention patent with the publication number CN118059527A discloses a distillation device, including a distillation column. There are several longitudinally distributed packing support plates in the distillation column. The packing support plates are provided with bow-shaped holes for up-and-down observation, and the bow-shaped holes on several packing support plates are arranged in a left-right staggered manner. The upper surface of the packing support plate is fixedly provided with several gaskets, and the upper surface of the gasket is fixedly provided with vertical rods. A plurality of longitudinally distributed composite packings are sleeved outside the vertical rods, and the composite packing at the lowermost position is in sliding contact with the upper surface of the gasket. The gas phase or liquid phase rising from the bow-shaped holes exerts a driving force on the composite packing, causing the composite packing to rotate around its own axis. In the present invention, the composite packings on the same vertical rod are independent of each other and can rotate around the vertical rod, increasing the kinetic energy of the internal liquid being fully thrown out, avoiding local accumulation of the liquid, and ensuring the gas-liquid mass transfer efficiency. Although the above device can ensure the gas-liquid mass transfer efficiency, when in use, it does not have a segmented treatment function, cannot adjust the spacing between different partitions in the distillation device, and cannot synchronously adjust the shielding position of the baffle on the partition. Summary of the Invention

[0004] In view of the problems existing in the existing distillation devices, the present invention is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: A segmented rectification device for arsine production, including a first connection shell, a second connection shell is arranged above the first connection shell, and a communication component is installed on both the second connection shell and the first connection shell. A third connection pipe is fixedly connected to the first connection shell, and a fourth connection pipe is fixedly connected to the second connection shell. A first electric push rod and a second electric push rod are respectively fixedly connected to both sides of the first connection shell. A first pressing plate is fixedly connected to the first electric push rod, a first pressing rod is fixedly connected to the first pressing plate, a second pressing plate is fixedly connected to the second electric push rod, a second pressing rod is fixedly connected to the second pressing plate, a second connecting rod is fixedly arranged on the second pressing rod, and a second pressing plate is fixedly connected to the second electric push rod. A first partition plate and a second partition plate are fixedly connected inside the first connection shell. A first baffle is fitted on the first partition plate, and a second baffle is fitted on the second partition plate. Both the second baffle and the first baffle are slidably connected to the first connection shell. Filter plates are fixedly arranged inside both the first connection shell and the second connection shell.

[0006] As a preferred solution of the present invention, a third partition plate and a fourth partition plate are slidably installed inside the second connection shell. A third baffle is fixedly connected to the third partition plate, and a fourth baffle is fixedly connected to the fourth partition plate. Adjusting components are installed on both sides of the second connection shell. A sliding ring is arranged below the adjusting component, a third electric push rod is installed at the bottom of the sliding ring, and a support block is arranged at the bottom of the third electric push rod. The support block is fixedly connected to the second connection shell.

[0007] As a preferred solution of the present invention, the communication component includes an engagement ring rotatably installed on the first connection shell. A top cover is fixedly arranged on the top of the engagement ring, a first connection pipe is installed on the top of the top cover, and a second connection pipe is installed on the top cover.

[0008] As a preferred solution of the present invention, the first pressing plate, the first pressing rod, and the first connecting rod are fixedly connected as an integral structure. The first pressing rod and the first connecting rod are evenly distributed on the first pressing plate. The second pressing rod, the second connecting rod, and the second pressing plate are fixedly connected as an integral structure. Both the first connecting rod and the second connecting rod have diameters increasing from the middle to both sides.

[0009] As a preferred solution of the present invention, the positions and numbers of the first connecting rods correspond to those of the second baffles one by one, and the positions and numbers of the second connecting rods correspond to those of the first baffles one by one. A sealing ring is fixedly arranged on the first connection shell, and the sealing ring has an interference fit with the first pressing rod and the second pressing rod.

[0010] As a preferred solution of the present invention, a lifting structure is formed between the first baffle and the first connection shell through the second connecting rod. A slider is fixedly connected to the first baffle, and the slider is slidably connected to the first connection shell.

[0011] As a preferred solution of the present invention, the third partition plate and the fourth partition plate are alternately distributed inside the second connection shell, and the connection manners between the third partition plate and the second connection shell and between the fourth partition plate and the second connection shell are the same.

[0012] As a preferred solution of the present invention, the adjusting assembly includes a first connecting block fixedly connected to the fourth partition plate. A second connecting block is fixedly connected to the first connecting block. Springs are fixedly connected between adjacent second connecting blocks. A traction steel cable is fixedly connected to the uppermost second connecting block. The traction steel cable passes through the remaining second connecting blocks except the uppermost one, and the bottom of the traction steel cable is connected to a sliding ring.

[0013] As a preferred solution of the present invention, a first sealing plate is fixedly connected above the first connecting block, and a second sealing plate is fixedly connected to the bottom of the first connecting block. The second sealing plate and the first sealing plate are fixedly connected to the second connection shell.

[0014] As a preferred solution of the present invention, the first sealing plate on the upper first connecting block is in mutual contact with the second sealing plate on the lower first connecting block. The fourth partition plate forms a sliding structure with the second connection shell through the first connecting block, the first sealing plate and the second sealing plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By providing the first connection shell and the second connection shell, the device can achieve the function of segmented treatment. When the solution is segmented and treated by the filter plate and the partition plate in the first connection shell, it can also be further treated by the filter plate and the partition plate in the second connection shell, thereby improving the rectification effect of the device. During the rectification process of the device, the first electric push rod and the second electric push rod can be extended or shortened. When the first electric push rod and the second electric push rod are shortened, different positions on the first connecting rod and the second connecting rod can abut against the first baffle and the second baffle, so that the first baffle and the second baffle can be maintained at different heights, so as to adjust the amount of liquid retained in each partition plate subsequently, and then adjust the rectification effect of the device, enhancing the adaptability of the device, and solving the problem that the existing rectification device cannot synchronously adjust the shielding position of the baffle on the partition plate.

[0016] 2. Through the adjusting assembly, the third electric push rod, the first sealing plate and the second sealing plate on the device, when the third electric push rod shortens, it will pull the slip ring downward. The slip ring will pull the traction steel rope, and the traction steel rope will pull the uppermost second connecting block downward, thereby causing the first connecting block and the third partition plate to move downward, and the springs at other places are compressed synchronously. The first sealing plate and the second sealing plate can keep the side of the second connecting shell sealed, so that the third partition plate and the fourth partition plate in the second connecting shell can perform synchronous telescoping while maintaining an equal distance, thereby adjusting the rectification efficiency of the device, enhancing the practicability of the device, and solving the problem that the existing rectification device cannot synchronously adjust the distances between different partition plates in the rectification device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them: Figure 1 is the overall structural schematic diagram of a segmented rectification device for arsine production according to the present invention; Figure 2 is the internal structural schematic diagram of the first connecting shell of the present invention; Figure 3 is the connection structural schematic diagram of the first electric push rod and the first pressing plate of the present invention; Figure 4 is Figure 3 the enlarged schematic diagram of the structure at A in Figure 5 is Figure 3 the enlarged schematic diagram of the structure at B in Figure 6 is the connection structural schematic diagram of the second connecting shell and the third partition plate of the present invention; Figure 7 is Figure 6 the enlarged schematic diagram of the structure at C in Figure 8 is Figure 6 the enlarged schematic diagram of the structure at D in

[0018] Reference numerals: 1, first connecting shell; 2, second connecting shell; 3, connecting component; 301, top cover; 302, first connecting pipe; 303, second connecting pipe; 304, connecting ring; 4, third connecting pipe; 5, fourth connecting pipe; 6, first electric push rod; 7, first pressing plate; 8, first pressing rod; 9, first connecting rod; 10, second electric push rod; 11, second pressing rod; 12, second connecting rod; 13, first partition plate; 14, first baffle; 15, slider; 16, second pressing plate; 17, second partition plate; 18, second baffle; 19, sealing ring; 20, third partition plate; 21, third baffle; 22, fourth partition plate; 23, fourth baffle; 24, adjusting component; 2401, first connecting block; 2402, second connecting block; 2403, spring; 2404, towing steel cable; 25, first sealing plate; 26, second sealing plate; 27, support block; 28, third electric push rod; 29, sliding ring; 30, filter plate. Detailed implementation manners

[0019] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0020] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar promotions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0021] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in an abnormal proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in detail with reference to the accompanying drawings.

[0023] Such as Figures 1 - 8As shown in the figure, a segmented rectification device for arsine production includes a first connection shell 1. A second connection shell 2 is arranged above the first connection shell 1. Communication components 3 are installed on both the second connection shell 2 and the first connection shell 1. A third connection pipe 4 is fixedly connected to the first connection shell 1, and a fourth connection pipe 5 is fixedly connected to the second connection shell 2. A first electric push rod 6 and a second electric push rod 10 are respectively and fixedly connected to both sides of the first connection shell 1. A first pressing plate 7 is fixedly connected to the first electric push rod 6, and a first pressing rod 8 is fixedly connected to the first pressing plate 7. A second pressing plate 16 is fixedly connected to the second electric push rod 10, and a second pressing rod 11 is fixedly connected to the second pressing plate 16. A second connecting rod 12 is fixedly arranged on the second pressing rod 11. A second pressing plate 16 is fixedly connected to the second electric push rod 10. A first partition plate 13 and a second partition plate 17 are fixedly connected inside the first connection shell 1. A first baffle 14 is fitted on the first partition plate 13, and a second baffle 18 is fitted on the second partition plate 17. Both the second baffle 18 and the first baffle 14 are slidably connected to the first connection shell 1. Filter plates 30 are fixedly arranged inside both the first connection shell 1 and the second connection shell 2. The filter plates 30 can filter the liquid. The device can perform segmented filtration work through the rectification structures inside the first connection shell 1 and the second connection shell 2. When rectifying through the first connection shell 1, the first electric push rod 6 and the second electric push rod 10 can be extended or shortened. When the first electric push rod 6 and the second electric push rod 10 are shortened, the second connecting rod 12 can move to the position of the first baffle 14, and the first connecting rod 9 can move to the position of the second baffle 18, so that the first baffle 14 and the second baffle 18 can realize the lifting function by using the structures of the two connecting rods ( Figure 3 as can be seen), so as to adjust the initial heights of the second baffle 18 and the first baffle 14 at various places subsequently, and then adjust the amount of retained liquid, so as to adjust the rectification effect of the device.

[0024] In this embodiment, a third partition plate 20 and a fourth partition plate 22 are slidably installed inside the second connection shell 2. A third baffle 21 is fixedly connected to the third partition plate 20, and a fourth baffle 23 is fixedly connected to the fourth partition plate 22. Adjusting components 24 are installed on both sides of the second connection shell 2. A sliding ring 29 is arranged below the adjusting components 24. A third electric push rod 28 is installed at the bottom of the sliding ring 29. A support block 27 is arranged at the bottom of the third electric push rod 28. The support block 27 and the second connection shell 2 are fixedly connected. The support block 27 on the second connection shell 2 is used to support the third electric push rod 28. When the third electric push rod 28 is shortened, it can act on the adjusting components 24, and the adjusting components 24 can pull the uppermost fourth partition plate 22, so as to synchronously and equidistantly adjust the distances between multiple groups of the third partition plate 20 and the fourth partition plate 22 subsequently, and then change the distances between the two groups of partition plates on the device, so as to adjust the rectification efficiency of the device.

[0025] In this embodiment, the communication component 3 includes an adapter ring 304 rotatably mounted on the first connection shell 1. A top cover 301 is fixedly arranged on the top of the adapter ring 304. A first connection pipe 302 is mounted on the top of the top cover 301, and a second connection pipe 303 is mounted on the top cover 301. It can be seen from Figure 1 that the connection methods of the communication component 3 with the upper and lower parts are the same. The first connection pipe 302 on the top cover 301 can keep the upper and lower sides of the device in communication, thereby realizing the function of segmented filtration.

[0026] In this embodiment, the first pressing plate 7, the first pressing rod 8, and the first connecting rod 9 are fixedly connected into an integral structure. The first pressing rod 8 and the first connecting rod 9 are evenly distributed on the first pressing plate 7. The second pressing rod 11, the second connecting rod 12, and the second pressing plate 16 are fixedly connected into an integral structure. The diameters of the first connecting rod 9 and the second connecting rod 12 increase from the middle to both sides. The double frustum structure of the first connecting rod 9 and the second connecting rod 12 enables the device to conveniently adjust the support height, so that the liquid retention amount can be adjusted during the subsequent use of the device.

[0027] In this embodiment, the positions and numbers of the first connecting rod 9 correspond to those of the second baffle 18 one by one, and the positions and numbers of the second connecting rod 12 correspond to those of the first baffle 14 one by one. A sealing ring 19 is fixedly arranged on the first connection shell 1. The sealing ring 19 is in interference fit with the first pressing rod 8 and the second pressing rod 11, ensuring that the device always remains airtight during the movement of the first pressing rod 8 and the second pressing rod 11.

[0028] In this embodiment, the first baffle 14 and the first connection shell 1 form a lifting structure through the second connecting rod 12. A slider 15 is fixedly connected to the first baffle 14. The slider 15 is slidably connected to the first connection shell 1. Through the lifting structure on the device, when the first baffle 14 is at different positions on the second connecting rod 12, its own height changes, thereby adjusting the liquid retention amount during rectification.

[0029] In this embodiment, the third partition plate 20 and the fourth partition plate 22 are alternately distributed inside the second connection shell 2. The connection methods between the third partition plate 20 and the second connection shell 2 and between the fourth partition plate 22 and the second connection shell 2 are the same. The third partition plate 20 and the fourth partition plate 22 on the device can adjust the spacing in the same way, so that multiple partition plates on the device are equidistant, thereby adjusting the rectification effect of the device.

[0030] In this embodiment, the adjusting assembly 24 includes a first connecting block 2401 fixedly connected to the fourth partition plate 22. A second connecting block 2402 is fixedly connected to the first connecting block 2401. A spring 2403 is fixedly connected between adjacent second connecting blocks 2402. A towing steel cable 2404 is fixedly connected to the uppermost second connecting block 2402. The towing steel cable 2404 passes through the remaining second connecting blocks 2402 except the uppermost one. The bottom of the towing steel cable 2404 is connected to the slip ring 29. When the slip ring 29 moves downward, the towing steel cable 2404 can pull the uppermost first connecting block 2401 and second connecting block 2402, so that the springs 2403 at other places are synchronously compressed, so that the fourth partition plates 22 at various places are contracted while maintaining equal distance, enhancing the convenience of the device during use.

[0031] In this embodiment, a first sealing plate 25 is fixedly connected above the first connecting block 2401, and a second sealing plate 26 is fixedly connected to the bottom of the first connecting block 2401. The second sealing plate 26 and the first sealing plate 25 are fixedly connected to the second connecting shell 2. The second sealing plate 26 and the first sealing plate 25 ensure that the first connecting block 2401 can move straight up and down, ensuring the stability of the device during operation.

[0032] In this embodiment, the first sealing plate 25 on the upper first connecting block 2401 and the second sealing plate 26 on the lower first connecting block 2401 are mutually attached. The fourth partition plate 22 and the second connecting shell 2 form a sliding structure through the first connecting block 2401, the first sealing plate 25 and the second sealing plate 26. The first sealing plate 25 and the second sealing plate 26 on the upper and lower first connecting blocks 2401 make the device as a whole always keep sealed during the adjustment process, enhancing the safety of the device during the working process.

[0033] It should be noted that the present invention is a segmented rectification device for arsine production. First, as Figure 1 shown, the device can first perform rectification through the first connecting shell 1, and then perform rectification through the second connecting shell 2. The solution is filtered by the filter plate 30. After the liquid in the first connecting shell 1 is fed, the steam will pass through the connecting component 3 on the first connecting shell 1 and move up through the first connecting pipe 302 on the top cover 301 to the second connecting shell 2 above the device. The connecting ring 304 can adjust the angle of the top cover 301, so as to change the feeding position of the second connecting pipe 303 on the top cover 301.

[0034] As Figures 2 - 8As shown, when rectifying through the first connecting shell 1, the first electric push rod 6 and the second electric push rod 10 can be extended or shortened. When the first electric push rod 6 and the second electric push rod 10 are shortened, the first pressing plate 7 drives the first pressing rod 8 to move, and the second pressing plate 16 drives the second pressing rod 11 to move. The second connecting rod 12 can move to the position of the first baffle 14, and the first connecting rod 9 can move to the position of the second baffle 18, so that the first baffle 14 and the second baffle 18 can realize the lifting function by using the diameter change structure of the two connecting rods ( Figure 3 as can be seen from), so as to adjust the initial heights of the second baffle 18 and the first baffle 14 at various places subsequently, and then adjust the amount of retained liquid and the rectifying effect of the device. After the first rectification is completed, secondary rectification can be carried out through the second connecting shell 2. When the third electric push rod 28 is shortened, the slip ring 29 moves downward and can act on the adjusting assembly 24. The adjusting assembly 24 can pull the uppermost fourth partition plate 22, so as to synchronously and equidistantly adjust the distance between the third partition plate 20 and the fourth partition plate 22 subsequently, and then change the distance between the two groups of partition plates on the device, thereby adjusting the rectifying efficiency of the device. When the slip ring 29 moves downward, the traction steel rope 2404 can pull the uppermost first connecting block 2401 and the second connecting block 2402, so that the springs 2403 at other places are synchronously compressed, so that the fourth partition plates 22 at various places are contracted while maintaining equal distance, and the second sealing plate 26 and the first sealing plate 25 keep the first connecting block 2401 capable of moving straight up and down. Since the first sealing plate 25 on the upper first connecting block 2401 and the second sealing plate 26 on the lower first connecting block 2401 are mutually attached, the first sealing plate 25 and the second sealing plate 26 on the first connecting blocks 2401 on the upper and lower sides can maintain the sealing effect of the device.

[0035] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way, and the cases of these combinations are not exhaustively described in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A segmented distillation device for arsine production, comprising a first connecting shell (1), characterized in that: A second connecting shell (2) is arranged above the first connecting shell (1); a connecting assembly (3) is installed on both the second connecting shell (2) and the first connecting shell (1); a third connecting pipe (4) is fixedly connected to the first connecting shell (1); a fourth connecting pipe (5) is fixedly connected to the second connecting shell (2); a first electric push rod (6) and a second electric push rod (10) are fixedly connected on both sides of the first connecting shell (1); a first pressing plate (7) is fixedly connected to the first electric push rod (6); a first pressing rod (8) is fixedly connected to the first pressing plate (7); a second pressing plate (16) is fixedly connected to the second electric push rod (10); and the second pressing plate ( A second pressure rod (11) is fixedly connected to the first connecting shell (16), a second connecting rod (12) is fixedly arranged on the second pressure rod (11), a second pressure plate (16) is fixedly connected to the second electric push rod (10), a first partition plate (13) and a second partition plate (17) are fixedly connected in the first connecting shell (1), a first baffle plate (14) is fitted on the first partition plate (13), a second baffle plate (18) is fitted on the second partition plate (17), the second baffle plate (18) and the first baffle plate (14) are both slidably connected to the first connecting shell (1), and filter plates (30) are fixedly arranged in the first connecting shell (1) and the second connecting shell (2).

2. A sectional distillation device for arsine production according to claim 1, characterized in that: A third partition plate (20) and a fourth partition plate (22) are slidably mounted in the second connecting shell (2); a third baffle plate (21) is fixedly connected to the third partition plate (20); and a fourth baffle plate (23) is fixedly connected to the fourth partition plate (22); adjustment components (24) are mounted on both sides of the second connecting shell (2); a slip ring (29) is arranged below the adjustment component (24); a third electric push rod (28) is mounted at the bottom of the slip ring (29); a support block (27) is arranged at the bottom of the third electric push rod (28); and the support block (27) and the second connecting shell (2) are fixedly connected.

3. A sectional distillation device for arsine production according to claim 1, characterized in that: The connecting component (3) comprises a connecting ring (304) rotatably mounted on the first connecting shell (1), a top cover (301) being fixedly arranged on the top of the connecting ring (304), a first connecting pipe (302) being mounted on the top of the top cover (301), and a second connecting pipe (303) being mounted on the top cover (301).

4. A sectional distillation device for arsine production according to claim 1, characterized in that: The first pressure plate (7), the first pressure rod (8) and the first connecting rod (9) are fixedly connected to form an integral structure; the first pressure rod (8) and the first connecting rod (9) are evenly spaced on the first pressure plate (7); the second pressure rod (11), the second connecting rod (12) and the second pressure plate (16) are fixedly connected to form an integral structure; the diameters of the first connecting rod (9) and the second connecting rod (12) increase gradually from the middle to both sides.

5. A sectional distillation device for arsine production according to claim 4, characterized in that: The position and number of the first connecting rods (9) correspond to the position and number of the second baffles (18), the position and number of the second connecting rods (12) correspond to the position and number of the first baffles (14), and a sealing ring (19) is fixedly provided on the first connecting shell (1), and the sealing ring (19) is interference-fitted with the first pressure rod (8) and the second pressure rod (11).

6. A sectional distillation device for arsine production according to claim 5, characterized in that: The first baffle plate (14) forms a lifting structure with the first connecting shell (1) through the second connecting rod (12); a sliding block (15) is fixedly connected to the first baffle plate (14); and the sliding block (15) is slidably connected to the first connecting shell (1).

7. A sectional distillation device for arsine production according to claim 2, characterized in that: The third partition plate (20) and the fourth partition plate (22) are alternately distributed inside the second connection shell (2), and the connection mode between the third partition plate (20) and the second connection shell (2) and the connection mode between the fourth partition plate (22) and the second connection shell (2) are the same.

8. A sectional distillation device for arsine production according to claim 7, characterized in that: The adjustment assembly (24) comprises a first connecting block (2401) fixedly connected to the fourth partition plate (22), a second connecting block (2402) fixedly connected to the first connecting block (2401), a spring (2403) fixedly connected between two adjacent second connecting blocks (2402), a traction steel rope (2404) fixedly connected to the top second connecting block (2402), the traction steel rope (2404) passes through the rest of the second connecting blocks (2402) except the top one, and the bottom of the traction steel rope (2404) is connected to the slip ring (29).

9. A sectional distillation device for arsine production according to claim 8, characterized in that: A first sealing plate (25) is fixedly connected to the top of the first connecting block (2401), a second sealing plate (26) is fixedly connected to the bottom of the first connecting block (2401), and the second sealing plate (26) and the first sealing plate (25) are fixedly connected to the second connecting shell (2).

10. A sectional distillation device for arsine production according to claim 9, characterized in that: The first sealing plate (25) on the upper first connecting block (2401) and the second sealing plate (26) on the lower first connecting block (2401) fit together, and the fourth partition plate (22) forms a sliding structure with the second connecting shell (2) through the first connecting block (2401), the first sealing plate (25) and the second sealing plate (26).

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