Spiral desorption equipment

Abstract

The utility model discloses spiral desorption equipment which comprises a driving device, a shell and spiral bodies, at least one spiral body is located in the shell, and the shell is connected with the driving device so that the spiral bodies can be driven by the driving device to rotate. The spiral body comprises a plurality of spiral blades, scrapers are arranged on the edges of part or all of the spiral blades, and the outer edges of the scrapers protrude relative to the edges of the spiral blades, so that the outer edges of the scrapers make contact with the inner side wall of the shell to take away materials attached to the inner side wall of the shell. Furthermore, a vertical scraping plate and an inclined scraping plate are respectively arranged on the spiral blade, so that the problem that the desorption performance of the material is reduced due to the fact that the material is adhered to the inner side wall of the shell in the desorption process can be prevented, the contact area of the material in the shell can be effectively increased, the heat transfer coefficient is increased, and the heat transfer efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of vacuum desorption, and in particular to a spiral desorption device. Background Art

[0002] Existing spiral desorption equipment often adopts a spiral blade structure design, so that after the material enters the equipment, the rotation of the spiral blade drives the material to flow, and the material can be evenly heated while running through heat conduction, so that the material can be quickly desorbed or dried. When the equipment is heated, thermal expansion will occur. In order to avoid the equipment from being damaged by friction with the metal wall after thermal expansion, there will be a minimum gap between the traditional spiral blade and the cavity. The setting of this gap makes most of the material only able to flip and flow at the bottom, and only a small part can be brought to the top and flip back and forth. It is not applicable to some powdery materials with high viscosity and poor heat transfer coefficient. For example, when desorbing solid amine materials, fine particles of the material will adhere to the inner wall of the cavity and form an insulating material layer. The existence of this material layer will greatly affect the thermal conductivity of the equipment and reduce the desorption performance of the desorption equipment for the material. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present application provides a spiral desorption device to solve at least one of the above-mentioned technical problems.

[0004] A spiral desorption device comprises a driving device, a shell and a spiral body, wherein at least one spiral body is located in the shell body, and the shell body is connected to the driving device so that the spiral body rotates under the drive of the driving device.

[0005] In a specific embodiment, the driving device includes a reducer and a motor, and a feed port is provided on one side of the shell. The motor drives the spiral body in the shell to rotate, and the reducer is connected to the motor to adjust the speed of the spiral body so that the contact between the spiral body and the shell surface is gentler and more uniform, avoiding too fast or too slow movement to cause unsatisfactory desorption effect or damage the inner wall of the shell.

[0006] The spiral body includes at least two spiral blades; a scraper is arranged on the edge of some or all of the spiral blades, and the outer edge of the scraper protrudes relative to the edge of the spiral blade so that the outer edge of the scraper contacts the inner wall of the shell to remove the material attached to the inner wall of the shell.

[0007] In a specific embodiment, the scraper includes a vertical scraper, and the plane where the plate surface of the vertical scraper is located is perpendicular to the radial line direction of the spiral blade and parallel to the rotation axis direction of the spiral body;

[0008] and / or

[0009] The scraper includes an inclined scraper; there is an inclination angle between the plane where the plate surface of the inclined scraper is located and the plane where the blade surface of the spiral blade is located; the outer edge of the inclined scraper is protruding and inclined relative to the edge of the spiral blade.

[0010] In a specific embodiment, the inclined scrapers and the vertical scrapers are evenly staggered along the edge of the spiral blade.

[0011] In a specific embodiment, the angle of inclination formed between the plane where the plate surface of the inclined scraper plate is located and the plane where the blade surface of the spiral blade is located is in the range of 30 to 45 degrees.

[0012] In a specific embodiment, the outer edge of the scraper protrudes 1-3 mm relative to the spiral blade.

[0013] In a specific embodiment, a connecting piece is further included, one end of which is fixedly connected to the edge of the spiral blade, and the other end of which is detachably connected to the scraper.

[0014] In a specific embodiment, a middle piece is further included, one end of which is detachably connected to the edge of the spiral blade, and the other end of which is detachably connected to the scraper. In practical applications, by detachably connecting the scraper to the spiral blade, the scraper can be flexibly disassembled and replaced according to the use situation, which can be connected by bolts.

[0015] It should be noted that the present application does not limit the specific shape of the scraper. In practical applications, as long as it can contact the inner wall of the shell and can produce a scraping effect on the attached material on the inner wall of the shell, the user can set a suitable scraper shape according to actual conditions. The scraper can be rectangular, square or other irregular shapes, with or without rounded corners.

[0016] In a specific embodiment, the spiral is a hollow spiral. The hollow spiral means that compared with the common spiral with a central axis, the hollow spiral cancels the central axis design, so that the original central axis position is vacant and more materials can be loaded. It should be noted that in actual applications, a spiral with a central axis can also be used according to actual conditions.

[0017] In a specific embodiment, a plurality of spirals are arranged in parallel in the housing. In practical applications, the user can set the size of the housing and the number of spirals in the housing as required.

[0018] In a specific embodiment, the scraper is a polytetrafluoro plate. The polytetrafluoro plate is a material with a certain hardness, wear resistance and elasticity. By using a material with a certain elasticity as the scraper, when the scraper is expanded by heat to be sufficient to contact the inner wall of the shell, the material on the inner wall of the shell can be scraped clean without increasing the friction with the inner wall of the shell, and the inner wall of the shell is not scratched. It should be noted that in actual applications, as long as the length after thermal expansion can contact the inner wall of the shell and can scrape off the material residue on the inner wall of the shell, other types of materials can be used as the scraper.

[0019] In a specific embodiment, a vacuum device is further included, and the vacuum device is connected to the shell to form a vacuum environment in the shell. In a specific embodiment, two spirals are arranged in parallel in the shell to process more materials at the same time. It should be noted that in actual applications, as long as the effect of processing the material can be achieved, the user can flexibly set the size of the shell, the size of the spiral, and the number of spirals in the shell according to the use situation.

[0020] In a specific embodiment, the edge of each spiral blade is provided with at least two vertical scrapers and two inclined scrapers symmetrical with respect to the rotation center of the spiral body, and the vertical scrapers and the inclined scrapers are arranged alternately. Among them, the outer edges of the vertical scrapers and the inclined scrapers are both protruding relative to the edge of the spiral blade, and there is a gap between the outer edge of the vertical scraper and / or the outer edge of the inclined scraper after protrusion and the shell. After the device is passed through a hot medium or heated by an external device, this gap will cause the scraper to be thermally expanded, and further the outer edge of the scraper will contact the inner wall of the shell after thermal expansion. After the outer edge of the scraper contacts the inner wall of the shell, during the rotation of the rotating body, the vertical scraper can scrape off the material adhered to the inner wall of the bottom of the shell. As the spiral body continues to rotate, the inclined scraper can further pick up the material scraped off by the vertical scraper, carry it from the bottom of the shell to the upper part of the shell, and then make the material fall with the rotation of the spiral body, so that the material will not accumulate at the bottom of the inner wall of the shell.

[0021] Beneficial effect: The present application provides a spiral desorption device, which provides a scraper on the edge of the spiral blade so that the outer edge of the scraper protrudes relative to the edge of the spiral blade, so that the outer edge of the scraper contacts the inner wall of the shell, and finally, during the rotation of the spiral body, the scraper can take away the material attached to the inner wall of the shell. It can reduce the adhesion and retention of the material on the inner wall of the shell, make the material turn over more fully in the equipment, effectively increase the contact area of ​​the material in the shell, increase the heat transfer coefficient, and improve the heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A perspective side view schematic diagram of a device of the present application;

[0024] Figure 2 is a perspective side view schematic diagram of another device of the present application;

[0025] Figure 3 It is a simplified schematic diagram of the positional relationship between the scraper and the spiral body in this application;

[0026] Figure 4 A schematic top view of a vertical scraper in the present application;

[0027] Figure 5 A side view schematic diagram of a vertical scraper in the present application;

[0028] Figure 6 A schematic top view of an inclined scraper in the present application;

[0029] Figure 7 It is a side view schematic diagram of an inclined scraper in this application.

[0030] The figure numbers are as follows: 1-driving device; 11-electric motor; 12-reducer; 2-housing; 21-inner wall of the housing; 3-spiral; 31-spiral blade; 4-scraper; 41-vertical scraper; 42-inclined scraper; 43-connecting piece; 44-bolt; 5-feed port; 6-vacuum device; 61-vacuum pump outlet; 7-base; 71-bearing seat. DETAILED DESCRIPTION

[0031] The concept, specific structure and technical effects of the present application will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, features and effects of the present application.

[0032] Hereinafter, various embodiments of the present application will be described more fully. The present application may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present application to the specific embodiments disclosed herein, but the present application should be understood to cover all adjustments, equivalents and / or alternatives within the spirit and scope of the various embodiments of the present application.

[0033] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of a disclosed function, operation, or element, and does not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present application, the terms "include", "have", and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or a combination of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or a combination of the foregoing.

[0034] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0035] The expressions (such as "first", "second", etc.) used in the various embodiments of the present application may modify the various constituent elements in the various embodiments, but may not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present application, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0036] It should be noted that in this application, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the present application, a person of ordinary skill in the art should understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] The terms used in the various embodiments of the application are only used to describe the purpose of specific embodiments and are not intended to limit the various embodiments of the application. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meanings commonly understood by ordinary technicians in the field of the various embodiments of the application. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the application.

[0039] Example

[0040] This embodiment provides a spiral desorption device. The specific scheme is as follows:

[0041] A spiral desorption device comprises a driving device 1, a shell 2 and a spiral body 3. At least one spiral body 3 is located in the shell 2, and the shell 2 is connected to the driving device 1 so that the spiral body 3 rotates under the drive of the driving device 1. In a specific embodiment, the driving device 1 comprises a reducer 12 and a motor 11, and a feed port 5 is provided on the shell 2.

[0042] In one embodiment, the motor 11 drives the spiral body 3 in the housing 2 to rotate, and the reducer 12 is connected to the motor 11 to adjust the rotation speed of the spiral body 3 so that the contact between the spiral body 3 and the surface of the housing 2 is gentler and more uniform, so as to avoid too fast or too slow movement causing unsatisfactory desorption effect or damage to the inner wall 21 of the housing. It also includes a base 7 for fixing the housing 2, and a bearing seat 71 arranged at one end or both ends of the housing 2, which is used to support and fix the spiral body 3, so that the spiral body 3 can rotate stably and at a uniform speed in the housing 2.

[0043] The spiral body 3 includes at least two spiral blades 31; a scraper 4 is arranged on the edge of some or all of the spiral blades 31, and the outer edge of the scraper 4 protrudes relative to the edge of the spiral blade 31 so that the outer edge of the scraper 4 contacts the inner wall 21 of the shell to remove the material attached to the inner wall 21 of the shell.

[0044] In a specific embodiment, the scraper 4 includes a vertical scraper 41, and the plane where the plate surface of the vertical scraper 41 is located is perpendicular to the radial line direction of the spiral blade 31 and parallel to the rotation axis direction of the spiral body 3;

[0045] and / or

[0046] The scraper 4 includes an inclined scraper 42; the plane where the inclined scraper 42 is located is inclined at an angle to the plane where the spiral blade 31 is located; the outer edge of the inclined scraper 42 is protruding and inclined relative to the edge of the spiral blade 31. Figure 5 and Figure 7 The side view is shown in direction B.

[0047] In a specific embodiment, the inclined scraper 42 and the vertical scraper 4 are evenly staggered along the edge of the spiral blade 31 .

[0048] In practical applications, the user can adjust the inclination angle between the plane where the inclined scraper 42 is located and the plane where the spiral blade is located according to specific conditions. In a specific embodiment, the inclination angle formed between the plane where the inclined scraper 42 is located and the plane where the spiral blade is located is in the range of 30 to 45 degrees.

[0049] In a specific embodiment, the outer edge of the scraper 4 protrudes 1-3 mm relative to the spiral blade 31. In an embodiment, the distance that the outer edge of the scraper 4 protrudes relative to the spiral blade 31 is as follows: Figure 4-7 As shown in the distance d in FIG. 1 , the specific structure of the vertical scraper 41 is as follows: Figure 4-5 As shown, the specific structure of the inclined scraper 42 is as follows Figure 6-7 As shown. Among them, Figure 4 and Figure 6 2 is a top view of the scraper 4 obtained from the observation direction A. It should be noted that the present embodiment does not limit the specific shape of the scraper 4. In practical applications, as long as the scraper 4 can contact the inner wall 21 of the shell and produce a scraping force on the attached material on the inner wall 21 of the shell, the user can set a suitable scraper 4 shape according to actual conditions. The scraper 4 can be rectangular, square or other irregular shapes, with or without rounded corners.

[0050] This embodiment does not limit the shapes of all scrapers 4 to be the same in the same application process. As long as it can achieve the effect of generating a scraping force on the attached materials on the inner side wall 21 of the shell without increasing the rotation resistance of the spiral body 3, the user can flexibly set the shape, thickness and size of each scraper 4 and the number of scrapers 4 required to be set on each spiral blade 31 according to actual conditions. The number and position distribution of the scrapers 4 on the spiral body 3 can be as follows: Figure 3 A simplified schematic diagram is shown.

[0051] It should be noted that this embodiment does not limit the protrusion distance of the vertical scraper 41 and the inclined scraper 42 relative to the outer edge of the spiral blade 31 to be consistent, nor does it limit the thickness of the vertical scraper 41 and the inclined scraper 42 to be consistent. In actual applications, as long as they can achieve the effect of contacting the inner wall 21 of the shell and can produce a scraping force on the attached materials on the inner wall 21 of the shell, the protrusion distance of the outer edge of the vertical scraper 41 and the inclined scraper 42 relative to the edge of the spiral blade 31 and their own thickness can be different values ​​within a range. For example, the protrusion distance of the outer edges of the two relative to the edge of the spiral blade 31 is different values ​​in the range of 1-3 mm.

[0052] In a specific embodiment, a connecting member 43 is further included, one end of which is fixedly connected to the edge of the spiral blade 31 , and the other end of which is detachably connected to the scraper 4 .

[0053] In a specific embodiment, an intermediate piece may be included, one end of which is detachably connected to the edge of the spiral blade 31, and the other end of which is detachably connected to the scraper 4. In practical applications, by setting the scraper 4 to be detachably connected to the spiral blade 31 through the connecting piece 43 or the intermediate piece, the user can flexibly disassemble and replace the scraper 4 according to the usage. The scraper 4 and the connecting piece 43 may be connected by bolts 44, and the connection relationship may be further fixed by welding after being connected by bolts 44.

[0054] In a specific embodiment, the plane where the surface of the scraper 4 is located is tangent to the edge of the spiral blade 31 .

[0055] In a specific embodiment, the plate surface portion of the scraper plate 4 is embedded with the edge of the spiral blade 31 .

[0056] In a specific embodiment, the spiral body 3 is a hollow spiral body 3. The hollow spiral body 3 means that the design of the central axis is cancelled compared with the common spiral body 3 with a central axis, so that the position of the original central axis is vacated and more materials can be loaded. It should be noted that in actual applications, the spiral body 3 with a central axis can also be used according to actual conditions.

[0057] In a specific embodiment, a plurality of spiral bodies 3 are arranged in parallel in the housing 2. In practical applications, the user can set the size of the housing 2 and the number of spiral bodies 3 in the housing 2 as required. Figure 1 and Figure 2 shown.

[0058] In a specific embodiment, the scraper 4 is a polytetrafluoro plate. The polytetrafluoro plate is a material with certain hardness, wear resistance and elasticity. By using a material with certain elasticity as the scraper 4, when the scraper 4 is sufficient to contact the inner wall 21 of the shell after thermal expansion, the material on the inner wall 21 of the shell can be scraped clean without increasing the friction with the inner wall 21 of the shell, and the inner wall 21 of the shell is not scratched. It should be noted that in actual applications, as long as the length after thermal expansion can contact the inner wall 21 of the shell and can scrape off the material residue on the inner wall 21 of the shell, other types of materials can be used as the scraper 4.

[0059] In a specific embodiment, a vacuum device 6 is further included, and the vacuum device 6 is connected to the housing 2 to form a vacuum environment in the housing 2. In practical applications, the vacuum device 6 is a vacuum pump, and a vacuum pump outlet 61 is provided on one side of the vacuum pump. The desorption process of some materials does not require a vacuum environment as a prerequisite, so the user can choose whether to set and use the vacuum device 6 according to needs.

[0060] In the usual process of desorbing carbon dioxide from solid amine, since solid amine is a powdery material, it also has a strong water absorption capacity. After the adsorption process, the solid amine has absorbed some water and will produce a certain viscosity. In the old technology, there is a large gap between the inner wall 21 of the shell and the spiral blade 31. In some cases, the width of this gap is about 5-10 mm. Due to the large gap width, the fine particles of the solid amine material will adhere to the inner wall 21 of the shell when turning over in the shell 2, especially forming a material layer with thickness at the bottom and side of the inner wall 21 of the shell. In actual conditions, the thermal conductivity of the solid amine material is close to that of ordinary thermal insulation materials, that is, relative to conventional materials, the thermal conductivity of the solid amine is poor. The solid amine powder scattered between the inner wall 21 of the shell and the spiral blade 31 will form an insulating material layer, blocking the further entry of external heat energy, making the heat transfer effect of the shell 2 worse, and unable to meet the need for uniform heating of the solid amine during desorption. Furthermore, the material attached to the inner wall 21 of the shell is in a static state for a long time because it is not touched by the spiral blades 31. It keeps absorbing heat, so that the temperature of this part of the material is too high, which has an adverse effect on its adsorption performance, which greatly affects the quality and efficiency of solid amine desorption.

[0061] In a process of desorbing carbon dioxide from solid amines using the desorption device of this embodiment, the desorption device has two spirals 3, which are arranged in parallel in the shell 2 to process more materials at the same time.

[0062] In a specific embodiment, the edge of each spiral blade 31 is provided with at least two vertical scrapers 4 and two inclined scrapers 42 symmetrical with respect to the rotation center of the spiral body 3, and the vertical scrapers 4 and the inclined scrapers 42 are arranged alternately. Among them, the outer edges of the vertical scrapers 41 and the inclined scrapers 42 are both protruding relative to the edge of the spiral blade 31, and there is a gap between the outer edge of the vertical scraper 41 and / or the outer edge of the inclined scraper 42 and the shell 2. This gap will cause the scraper 4 to expand thermally after the device is introduced into the heat medium or heated by the external device, and further cause the outer edge of the scraper 4 to contact the inner wall of the shell 2 after the thermal expansion. After the outer edge of the scraper 4 contacts the inner wall 21 of the shell, during the rotation of the rotating body, the vertical scraper 41 can scrape off the solid amine powder or particles adhering to the inner wall of the bottom of the shell 2. As the spiral body 3 continues to rotate, the inclined scraper 42 can further pick up the solid amine powder or particles scraped off by the vertical scraper 41, carry it from the bottom of the shell 2 to the upper part of the shell 2, and then make the solid amine powder or particles fall down as the spiral body 3 rotates.

[0063] This design can effectively improve the uniformity of the up and down stirring and tumbling of the material in the shell 2, increase the contact area between the material and the inner wall 21 of the shell, and prevent solid amines and other materials with powder or granular properties from adhering to the inner wall and forming an insulating layer, thereby further increasing the contact area between the material and the inner wall 21 of the shell. When the material needs to be heated, the heating degree of the material can be more uniform, the loss of heat energy is also less, and the material can reach the reaction temperature more quickly.

[0064] This embodiment provides a spiral desorption device, by arranging a scraper on the edge of the spiral blade, so that the outer edge of the scraper protrudes relative to the edge of the spiral blade, so that the outer edge of the scraper contacts the inner wall of the shell, and finally during the rotation of the spiral body, the scraper can take away the material attached to the inner wall of the shell. It can reduce the adhesion and retention of the material on the inner wall of the shell, so that the material can be turned over more fully in the equipment, and when desorbing the solid amine material, it can effectively increase the contact area of ​​the material in the shell, increase the heat transfer coefficient, and improve the heat transfer efficiency.

[0065] The above is a specific description of the preferred implementation of the present application, but the invention of the present application is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A spiral desorption device, characterized in that: It includes a driving device, a housing and a spiral body; At least one of the spiral bodies is located in the housing, and the housing is connected to the driving device so that the spiral body rotates under the drive of the driving device; The spiral body includes at least two spiral blades; a scraper is arranged on the edge of part or all of the spiral blades, and the outer edge of the scraper protrudes relative to the edge of the spiral blade so that the outer edge of the scraper contacts the inner wall of the shell to remove the material attached to the inner wall of the shell.

2. A spiral desorption device according to claim 1, characterized in that: The scraper comprises a vertical scraper, the plane where the plate surface of the vertical scraper is located is perpendicular to the radial line direction of the spiral blade and parallel to the rotation axis direction of the spiral body; and / or The scraper comprises an inclined scraper; there is an inclination angle between the plane where the plate surface of the inclined scraper is located and the plane where the blade surface of the spiral blade is located; the outer edge of the inclined scraper is protruding and inclined relative to the edge of the spiral blade.

3. A spiral desorption device according to claim 2, characterized in that: The inclined scrapers and the vertical scrapers are evenly and staggeredly arranged along the edge of the spiral blade.

4. A spiral desorption device according to claim 2, characterized in that: The angle of inclination formed between the plane where the plate surface of the inclined scraper is located and the plane where the blade surface of the spiral blade is located is in the range of 30 to 45 degrees.

5. The spiral desorption device according to claim 1, characterized in that: The outer edge of the scraper protrudes 1-3 mm relative to the spiral blade.

6. The spiral desorption device according to claim 1, characterized in that: It also includes a connecting piece, one end of which is fixedly connected to the edge of the spiral blade, and the other end of which is detachably connected to the scraper.

7. The spiral desorption device according to claim 1, characterized in that: It also includes a middle piece, one end of which is detachably connected to the edge of the spiral blade, and the other end of which is detachably connected to the scraper.

8. The spiral desorption device according to claim 1, characterized in that: The spiral body is a hollow spiral body.

9. The spiral desorption device according to claim 1, characterized in that: The scraper is a polytetrafluoroethylene plate.

10. The spiral desorption device according to claim 1, characterized in that: A vacuum device is also included, which is connected to the shell and is used to form a vacuum environment in the shell.

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