Separating device

Abstract

The utility model provides a separation device, which comprises a separation barrel, a plurality of separation blades, a plurality of separation blades, a plurality of separation blades, a plurality of separation blades and a plurality of separation blades, the feeding structure is arranged at the first end of the separation barrel and communicates with the separation cavity; the discharging structure is arranged at the second end of the separation barrel and communicates with the separation cavity; the heating part is arranged on the outer surface of the separation barrel and is used for heating the to-be-separated materials in the separation cavity; and the first material raising structure is connected with the inner surface of the separation barrel and corresponds to the heating part. According to the technical scheme, the problem that in the prior art, the recovery rate of the recovered materials is low can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery recycling, and in particular to a separation device. Background Art

[0002] In recent years, the lithium-ion battery industry has flourished with the continuous advancement of new energy technologies. Due to their advantages such as high voltage, high energy density, and excellent cycle performance, lithium-ion batteries have been widely used in mobile smart terminals, small electrical devices, grid energy storage devices, and electric vehicles. However, during the lithium-ion battery production process, a series of substandard cells are generated during processes such as electrode coating, tab spacing, and tab welding. Furthermore, even discarded lithium-ion batteries after long-term use may contain relatively intact cells. These cells have high recycling value and potential.

[0003] At present, the positive electrode part of a common battery cell includes aluminum foil and positive electrode material adhered to the aluminum foil. In this field, high-pressure jetting or ultrasonic separation methods are usually used to separate the aluminum foil and the positive electrode material to recover the higher-value positive electrode material. However, using the above methods, the proportion of positive electrode material that can be separated and recycled is low, which will result in a certain degree of waste. Utility Model Content

[0004] The main purpose of the utility model is to provide a separation device to solve the problem of low recovery rate of recycled materials in the related art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a separation device, including: a separation cylinder, which is rotatably arranged and has a separation chamber; a feeding structure, which is arranged at the first end of the separation cylinder and is connected to the separation chamber; a discharging structure, which is arranged at the second end of the separation cylinder and is connected to the separation chamber; a heating part, which is arranged on the outer surface of the separation cylinder to heat the material to be separated in the separation chamber; and a first lifting structure, which is connected to the inner surface of the separation cylinder and is arranged corresponding to the heating part.

[0006] Furthermore, the first material lifting structure includes a plurality of first material lifting blocks arranged in an array on the inner surface of the separation cylinder.

[0007] Furthermore, the first material lifting structure includes a plurality of material lifting rings spaced apart in the axial direction of the separation cylinder, each material lifting ring includes a plurality of second material lifting blocks spaced apart in the circumferential direction of the separation cylinder, wherein, in the material lifting ring, the spacing distance between adjacent second material lifting blocks is between 15 cm and 30 cm; and / or, the spacing distance between two adjacent material lifting rings is between 8 cm and 15 cm.

[0008] Furthermore, the heating part is a heating jacket which is sleeved on the periphery of the separation cylinder.

[0009] Furthermore, the heating sleeve includes a plurality of first electric heating wires, which extend along the axial direction of the separation cylinder and are arranged along the circumferential direction of the separation cylinder; and / or, the heating sleeve includes a second heating wire, which is wound along the circumferential direction of the separation cylinder and forms a spiral structure in the axial direction of the separation cylinder.

[0010] Furthermore, the separation chamber includes a first chamber and a second chamber arranged in sequence in the direction from the feed structure to the discharge structure, and the separation device also includes a first screen plate and a crushing structure. The first screen plate is located between the first chamber and the second chamber, the first lifting structure is located in the first chamber, and the crushing structure is movably arranged in the second chamber.

[0011] Furthermore, the separation chamber also includes a third chamber, which is located at one end of the second chamber away from the first chamber. The separation device also includes a second sieve plate arranged between the second chamber and the third chamber and a second material lifting structure arranged in the third chamber.

[0012] Furthermore, the ratio of the length of the first chamber to the length of the separation chamber is greater than or equal to 50% and less than or equal to 70%; and / or, an observation window is provided on the separation cylinder, and the observation window is provided at the first chamber.

[0013] Furthermore, the discharging structure includes a discharging cylinder, which is nested with the separation cylinder and located on the outside of the separation cylinder. The second end of the separation cylinder has a sieve hole section. The discharging cylinder includes a first cylinder section and a second cylinder section. The first cylinder section is sleeved on the outer periphery of the sieve hole section, and the second cylinder section is arranged at an end of the first cylinder section away from the first end of the separation cylinder. The first cylinder section is provided with a first discharge port for discharging the first separation material, and the second cylinder section is provided with a second discharge port for discharging the second separation material. The size of the first separation material is smaller than the size of the second separation material.

[0014] Furthermore, the separation cylinder extends in a transverse direction, and the first end of the separation cylinder is higher than the second end of the separation cylinder; and / or, the separation device also includes an air inlet structure and an air outlet structure, the air inlet structure is arranged at the first end of the separation cylinder and introduces protective gas into the separation chamber, and the air outlet structure is arranged at the second end of the separation cylinder and is used to discharge the gas in the separation chamber.

[0015] The technical solution of the present invention is applied, and the materials to be separated include a first separation material and a second separation material. The separation cylinder has a separation chamber, and the separation chamber is used to accommodate the materials to be separated. The feeding structure is arranged at the first end of the separation cylinder and is connected to the separation chamber. The feeding structure is used to transfer the materials to be separated to the separation chamber for subsequent separation of the materials to be separated. The discharging structure is arranged at the second end of the separation cylinder and is connected to the separation chamber. The discharging structure is used to transfer the separated first separation material and the second separation material to the outside of the separation chamber. The heating part is arranged on the outer surface of the separation cylinder to heat the materials to be separated in the separation chamber, so that the connection strength between the first separation material and the second separation material is reduced, thereby making the first separation material and the second separation material easier to separate. The separation cylinder is rotatably arranged, and the first lifting structure is connected to the inner surface of the separation cylinder. The first material-lifting structure is connected to the surface and is arranged corresponding to the heating part. When the separation cylinder rotates, the material to be separated in the separation chamber will also rotate with the rotation of the separation cylinder and will contact the first material-lifting structure. The first material-lifting structure can fully mix the material to be separated so that different parts of the material to be separated can all contact the inner surface of the separation cylinder, so that different parts of the material to be separated can all be heated by the heating part, so that the material to be separated is heated more evenly, thereby further ensuring that the first separation material and the second separation material are easy to separate. In addition, the effect of the first material-lifting structure lifting the material to be separated can also promote the separation of the first separation material and the second separation material. Through the arrangement of the above-mentioned first material-lifting structure and the heating part, the first separation material and the second separation material can both be recovered due to separation instead of always remaining connected together. Therefore, the technical solution of the present application can effectively solve the problem of low recovery rate of recycled materials in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic cross-sectional view of an embodiment of a separation device according to the present invention is shown;

[0018] Figure 2 Shown Figure 1 A schematic top view of a separation device;

[0019] Figure 3 Shown Figure 1 Schematic front view of the separation device.

[0020] The above drawings include the following reference numerals:

[0021] 10. Separation cylinder; 11. Separation chamber; 111. First chamber; 112. Second chamber; 113. Third chamber;

[0022] 20. Feeding structure;

[0023] 30. Discharging structure; 31. First discharging port; 32. Second discharging port;

[0024] 40. First material lifting structure; 41. Material lifting ring; 411. Second material lifting block;

[0025] 51. First sieve plate; 52. Second sieve plate; 53. Observation window;

[0026] 60. Broken structure;

[0027] 70. The second material lifting structure. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0031] like Figures 1 to 3 As shown, the present application provides a separation device, and an embodiment of the separation device of the present application includes: a separation cylinder 10, a feed structure 20, a discharge structure 30, a heating part, and a first material lifting structure 40; the separation cylinder 10 is rotatably arranged, and the separation cylinder 10 has a separation chamber 11; the feed structure 20 is arranged at the first end of the separation cylinder 10 and is connected to the separation chamber 11; the discharge structure 30 is arranged at the second end of the separation cylinder 10 and is connected to the separation chamber 11; the heating part is arranged on the outer surface of the separation cylinder 10 to heat the material to be separated in the separation chamber 11; the first material lifting structure 40 is connected to the inner surface of the separation cylinder 10 and is arranged corresponding to the heating part.

[0032] The technical solution of this embodiment is applied, and the materials to be separated include a first separation material and a second separation material. The separation cylinder 10 has a separation chamber 11, and the separation chamber 11 is used to accommodate the materials to be separated. The feeding structure 20 is arranged at the first end of the separation cylinder 10 and communicated with the separation chamber 11. The feeding structure 20 is used to transfer the materials to be separated to the separation chamber 11 for subsequent separation of the materials to be separated. The discharging structure 30 is arranged at the second end of the separation cylinder 10 and communicated with the separation chamber 11. The discharging structure 30 is used to transfer the separated first separation material and the second separation material to the outside of the separation chamber 11. The heating part is arranged on the outer surface of the separation cylinder 10 to heat the materials to be separated in the separation chamber 11, so that the connection strength between the first separation material and the second separation material is reduced, thereby making the first separation material and the second separation material easier to separate. The separation cylinder 10 is rotatably arranged, and the first lifting structure 40 It is connected to the inner surface of the separation cylinder 10 and is arranged corresponding to the heating part. When the separation cylinder 10 rotates, the material to be separated in the separation chamber 11 will also rotate with the rotation of the separation cylinder 10 and will contact the first material-lifting structure 40. The first material-lifting structure 40 can fully mix the material to be separated so that different parts of the material to be separated can all contact the inner surface of the separation cylinder 10, so that different parts of the separated material can all be heated by the heating part, so that the material to be separated is heated more evenly, thereby further ensuring that the first separated material and the second separated material are easy to separate. In addition, the effect of the first material-lifting structure 40 lifting the material to be separated can also promote the separation of the first separated material and the second separated material. Through the arrangement of the above-mentioned first material-lifting structure 40 and the heating part, the first separated material and the second separated material can both be recovered due to separation instead of always remaining connected. Therefore, the technical solution of this embodiment can effectively solve the problem of low recovery rate of recycled materials in the related art.

[0033] It should be noted that, in this embodiment, the separation device is used to separate the positive electrode part of the lithium battery cell, so the material to be separated is the positive electrode part of the cell, the first separation material is the positive electrode material, and the second separation material is the aluminum foil. For the material to be separated, the positive electrode material is connected to the aluminum foil in the form of a layered structure through a binder. During the heating process, the binder will decompose and fail, which will reduce the connection strength between the positive electrode material and the aluminum foil, making it easy to separate the positive electrode material and the aluminum foil.

[0034] like Figures 1 to 3As shown, the first material-raising structure 40 includes multiple material-raising rings 41 spaced apart along the axial direction of the separation cylinder 10. Each material-raising ring 41 includes multiple second material-raising blocks 411 spaced apart along the circumference of the separation cylinder 10. This arrangement ensures that the inner surface of the separation cylinder 10 is provided with second material-raising blocks 411 in both the axial and circumferential directions. As the separation cylinder 10 rotates, the material to be separated can fully contact different second material-raising blocks 411, thereby achieving more uniform heating of the material to be separated. The spacing between adjacent second material-raising blocks 411 in the material-raising rings 41 is between 15 cm and 30 cm, and the spacing between two adjacent material-raising rings 41 is between 8 cm and 15 cm. The first material-raising structure 40, which meets these requirements, not only ensures that the material to be separated is fully mixed, but also allows the material to directly contact the inner surface of the separation cylinder 10, thereby shortening the heat transfer path between the material to be separated and the heating unit. Specifically, the distance between adjacent second lifting blocks 411 can be 15 cm, 18 cm, 21 cm, 26 cm, 28 cm, or 30 cm; the distance between two adjacent lifting rings 41 can be 8 cm, 9.3 cm, 10.9 cm, 11 cm, 12.5 cm, 13.8 cm, or 15 cm. In addition, in other embodiments, the distance between adjacent second lifting blocks in the lifting ring can be adaptively adjusted according to the size of the material to be separated; the distance between two adjacent lifting rings can also be adaptively adjusted according to the size of the material to be separated.

[0035] In other embodiments, the first material lifting structure includes a plurality of first material lifting blocks arranged in an array on the inner surface of the separation cylinder. Specifically, "a plurality of first material lifting blocks arranged in an array" means that the plurality of first material lifting blocks can be arranged only in a single row in the axial direction of the separation cylinder 10, or can be arranged only in a single column in the circumferential direction of the separation cylinder 10, or can be arranged in multiple rows and columns (the first material lifting blocks in two adjacent rows or columns can be arranged in a corresponding or staggered manner). Such an arrangement can achieve the effect of uniformly heating the material to be separated.

[0036] In this embodiment, the heating portion is a heating jacket that is sleeved around the outer circumference of the separation cylinder 10. Specifically, the provision of the heating jacket allows the separation cylinder 10 to be heated in a circumferential manner, so that when the separation cylinder 10 rotates, the material to be separated can be heated at any point in the circumferential direction when it contacts the inner surface of the separation cylinder 10, thereby ensuring the heating effect of the separation device on the material to be separated.

[0037] More specifically, the heating jacket includes a plurality of first electric heating wires, which extend in the axial direction of the separation cylinder 10 and are arranged in the circumferential direction of the separation cylinder 10; the heating jacket includes a second heating wire, which is wound in the circumferential direction of the separation cylinder 10 and forms a spiral structure in the axial direction of the separation cylinder 10. It should be noted that the heating jacket may include only the first electric heating wire, only the second electric heating wire, or both the first and second electric heating wires, and the arrangement of the first and second electric heating wires enables the heating jacket to heat the separation cylinder 10 in the circumferential direction.

[0038] like Figures 1 to 3 As shown, the separation chamber 11 includes a first chamber 111 and a second chamber 112 arranged in sequence in the direction from the feeding structure 20 to the discharging structure 30, and the separation device also includes a first screen plate 51 and a crushing structure 60. The first screen plate 51 is located between the first chamber 111 and the second chamber 112, the first lifting structure 40 is located in the first chamber 111, and the crushing structure 60 is movably arranged in the second chamber 112. Specifically, the first chamber 111 is called the "heating section", the first material lifting structure 40 is located in the first chamber 111, the heating part is located on the partial outer surface of the separation cylinder 10 corresponding to the first chamber 111, the second chamber 112 is called the "rolling section", the crushing structure 60 is a hollow stainless steel cylinder, the diameter of the crushing structure 60 is between 30 cm and 40 cm, and the weight of the crushing structure 60 is between 50 kg and 200 kg. When the separation cylinder 10 rotates, the crushing structure 60 moves in the second chamber 112, so that the crushing structure 60 will crush the material to be separated, and the positive electrode material will be crushed under the crushing of the crushing structure 60, and it will become multiple smaller parts, while the size of the aluminum foil remains basically unchanged, and the crushing of the crushing structure 60 can further reduce the connectivity between the positive electrode material and the aluminum foil, making it easier to separate. In this embodiment, the crushing structure 60 is limited between the first screen plate 51 and the second screen plate 52 (mentioned later). In other embodiments, the crushing structure can also be limited between the first screen plate and the end surface of the second end of the separation cylinder.

[0039] like Figures 1 to 3As shown, the separation chamber 11 also includes a third chamber 113, which is located at the end of the second chamber 112 away from the first chamber 111. The separation device also includes a second sieve plate 52 disposed between the second and third chambers 112, 113, and a second material lifting structure 70 disposed within the third chamber 113. Specifically, the third chamber 113 is referred to as the "separation section." From the first end to the second end of the separation cylinder 10, the first, second, and third chambers 111, 112, and 113 are sequentially connected. The provision of the second material lifting structure 70 enables the crushed positive electrode material and aluminum foil to be separated, further ensuring the recovery rate of the positive electrode material. The second material lifting structure 70 also includes a plurality of material lifting blocks arranged in an array on the inner surface of the separation cylinder. The plurality of material lifting blocks can be arranged in a single row, spaced only in the axial direction of the separation cylinder 10, or spaced only in a single column, or arranged in multiple rows and columns.

[0040] Furthermore, in this embodiment, the ratio of the length of the first chamber 111 to the length of the separation chamber 11 is greater than or equal to 50% and less than or equal to 70%. Specifically, this configuration allows, on the one hand, the first chamber 111 to be sufficiently long to ensure that the material to be separated is fully heated before entering the second chamber 112. On the other hand, it allows the length of the first chamber 111 to be limited, thereby reducing the length of the heating portion and thus achieving energy conservation. The ratio of the length of the first chamber 111 to the length of the separation chamber 11 can be 50%, 58%, 60%, 62%, 67%, or 70%.

[0041] like Figures 1 to 3 As shown, the separation cylinder 10 is provided with an observation window 53, which is provided at the first chamber 111. Specifically, the setting of the observation window 53 can facilitate the staff to observe the situation in the first chamber 111 so as to facilitate the staff to adjust the working state of the separation device in time.

[0042] like Figures 1 to 3As shown, the discharge structure 30 includes a discharge cylinder, which is nested with the separation cylinder 10 and located on the outside of the separation cylinder 10. The second end of the separation cylinder 10 has a sieve hole section. The discharge cylinder includes a first cylinder section and a second cylinder section. The first cylinder section is sleeved on the outer periphery of the sieve hole section, and the second cylinder section is arranged at an end of the first cylinder section away from the first end of the separation cylinder 10. The first cylinder section is provided with a first discharge port 31 for discharging the first separation material, and the second cylinder section is provided with a second discharge port 32 for discharging the second separation material. The size of the first separation material is smaller than that of the second separation material. Specifically, the material to be separated after separation forms a mixture of a first separation material and a second separation material present in the third chamber 113. The first separation material is smaller-sized positive electrode material fragments. The size of the positive electrode material fragments is approximately between 1 cm and 2 cm, and the size of the aluminum foil is approximately between 7 cm and 8 cm. The diameter of the sieve holes on the sieve section can be set between 4 cm and 6 cm, so that the positive electrode material fragments can be screened out. The screened positive electrode material fragments are discharged from the first discharge port 31, and the remaining aluminum foil is discharged from the second discharge port 32, thereby realizing the separate recovery of the first separation material and the second separation material. The separation device of this embodiment can make the separation rate of the positive electrode material close to 100%, and the aluminum content of the screened positive electrode material is lower than 0.05% on average.

[0043] Furthermore, in this embodiment, the separation cylinder 10 extends in the transverse direction, and the first end of the separation cylinder 10 is higher than the second end of the separation cylinder 10. Specifically, the angle between the axis of the separation cylinder 10 and the horizontal plane is between 1 and 3 degrees. This arrangement eliminates the need for the separation device to be provided with a separate pushing structure within the separation chamber 11, and the material can be moved from the first end of the separation cylinder 10 to the second end of the separation cylinder 10 by its own gravity.

[0044] In addition, in this embodiment, the separation device further includes an air inlet structure and an air outlet structure. The air inlet structure is disposed at the first end of the separation cylinder 10 and is used to introduce protective gas into the separation chamber 11. The air outlet structure is disposed at the second end of the separation cylinder 10 and is used to discharge the gas within the separation chamber 11. Specifically, when the separation device first begins operation, protective gas (which may be an inert gas) is introduced into the separation chamber 11 through the air inlet structure, and the gas originally in the separation chamber 11 is discharged through the air outlet structure, thereby protecting the material to be separated. Furthermore, while the separation device is in operation, the air outlet structure can also continuously introduce protective gas into the separation chamber 11, thereby ensuring that no other gas remains in the separation chamber 11.

[0045] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0046] For ease of description, spatially relative terms such as "above," "on the upper surface of," "on top of," etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" other devices or structures would then be positioned as "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0047] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A separation device, characterized in that: include: A separation cylinder (10) is rotatably arranged, wherein the separation cylinder (10) has a separation chamber (11); A feeding structure (20) is provided at the first end of the separation cylinder (10) and is in communication with the separation chamber (11); a discharge structure (30), arranged at the second end of the separation cylinder (10) and communicating with the separation chamber (11); A heating portion, arranged on the outer surface of the separation cylinder (10) to heat the material to be separated in the separation chamber (11); The first material lifting structure (40) is connected to the inner surface of the separation cylinder (10) and is arranged corresponding to the heating part.

2. The separation device according to claim 1, characterized in that The first material lifting structure (40) comprises a plurality of first material lifting blocks arranged in an array on the inner surface of the separation cylinder (10).

3. The separation device according to claim 1, characterized in that The first material lifting structure (40) comprises a plurality of material lifting rings (41) spaced apart along the axial direction of the separation cylinder (10), and each of the material lifting rings (41) comprises a plurality of second material lifting blocks (411) spaced apart along the circumferential direction of the separation cylinder (10), wherein: In the lifting ring (41), the spacing between adjacent second lifting blocks (411) is between 15 cm and 30 cm; and / or, The distance between two adjacent lifting rings (41) is between 8 cm and 15 cm.

4. The separation device according to claim 1, characterized in that The heating portion is a heating jacket sleeved on the outer periphery of the separation cylinder (10).

5. The separation device according to claim 4, characterized in that The heating sleeve comprises a plurality of first electric heating wires, the first electric heating wires extending along the axial direction of the separation cylinder (10), and the plurality of first electric heating wires being arranged along the circumferential direction of the separation cylinder (10); and / or, The heating sleeve comprises a second heating wire, which is wound along the circumferential direction of the separation cylinder (10) and forms a spiral structure in the axial direction of the separation cylinder (10).

6. The separation device according to any one of claims 1 to 5, characterized in that The separation chamber (11) includes a first chamber (111) and a second chamber (112) sequentially arranged in a direction from the feeding structure (20) to the discharging structure (30), and the separation device further includes a first screen plate (51) and a crushing structure (60), wherein the first screen plate (51) is located between the first chamber (111) and the second chamber (112), the first lifting structure (40) is located in the first chamber (111), and the crushing structure (60) is movably arranged in the second chamber (112).

7. The separation device according to claim 6, characterized in that The separation chamber (11) further comprises a third chamber (113), wherein the third chamber (113) is located at one end of the second chamber (112) away from the first chamber (111), and the separation device further comprises a second sieve plate (52) arranged between the second chamber (112) and the third chamber (113), and a second material lifting structure (70) arranged in the third chamber (113).

8. The separation device according to claim 6, characterized in that The ratio between the length of the first chamber (111) and the length of the separation chamber (11) is greater than or equal to 50% and less than or equal to 70%; and / or, An observation window (53) is provided on the separation cylinder (10), and the observation window (53) is arranged at the first chamber (111).

9. The separation device according to any one of claims 1 to 5, characterized in that The discharging structure (30) includes a discharging cylinder, which is nested with the separation cylinder (10) and located on the outside of the separation cylinder (10), and the second end of the separation cylinder (10) has a sieve hole section. The discharging cylinder includes a first cylinder section and a second cylinder section, the first cylinder section is sleeved on the outer periphery of the sieve hole section, and the second cylinder section is arranged at an end of the first cylinder section away from the first end of the separation cylinder (10). The first cylinder section is provided with a first discharge port (31) for discharging a first separation material, and the second cylinder section is provided with a second discharge port (32) for discharging a second separation material. The size of the first separation material is smaller than the size of the second separation material.

10. The separation device according to any one of claims 1 to 5, characterized in that The separation cylinder (10) extends in a transverse direction, and the first end of the separation cylinder (10) is higher than the second end of the separation cylinder (10); and / or, The separation device further comprises an air inlet structure and an air outlet structure, wherein the air inlet structure is arranged at the first end of the separation cylinder (10) and introduces protective gas into the separation chamber (11), and the air outlet structure is arranged at the second end of the separation cylinder (10) and is used to discharge the gas in the separation chamber (11).

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