Recycling device

Abstract

The utility model provides a recovery device, and relates to the technical field of battery recovery. The recovery device comprises a shredding machine, an ultrasonic cleaning machine, a ball mill, a drum screening machine and a drying machine. An input port of the shredding machine is used for receiving a to-be-recycled positive plate, an input port of the ultrasonic cleaning machine is communicated with an output port of the shredding machine, an input port of the ball mill is communicated with a first output port of the ultrasonic cleaning machine, an input port of the drum screening machine is communicated with an output port of the ball mill, and a first output port of the drum screening machine is used for outputting a positive electrode material; an input port of the drying machine communicates with a second output port of the ultrasonic cleaning machine and a second output port of the roller screening machine, and an output port of the drying machine is used for outputting aluminum foil pieces. According to the recovery device provided by the invention, the to-be-recovered positive plate is crushed and then subjected to primary screening, ball milling and secondary screening in sequence, so that a better separation effect is achieved, and the obtained positive electrode material is higher in purity and lower in impurity content.

Description

Technical Field

[0001] The present application relates to the technical field of battery recycling, and in particular to a recycling device. Background Art

[0002] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art.

[0003] The positive electrode sheet is an important component of the battery, which mainly includes aluminum foil and the positive electrode material coated on the aluminum foil. Currently, in the recycling process of the positive electrode sheet, due to the presence of adhesives in the positive electrode sheet, the positive electrode material and the aluminum foil are difficult to separate from each other. Therefore, the positive electrode sheet needs to be shredded by a shredder and then put into an ultrasonic cleaning machine for washing and screening. The separated positive electrode material and aluminum foil are then dried and set aside. However, this recycling method has low separation accuracy, resulting in low purity of the separated positive electrode material and unsatisfactory recycling effect. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a recovery device to solve the technical problem of low purity of positive electrode materials obtained by separation by a shredder and an ultrasonic cleaner.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] An embodiment of the present application provides a recovery device, comprising:

[0007] A shredder, the input of which is used to receive the positive electrode sheets to be recycled;

[0008] an ultrasonic cleaning machine, the input port of which is connected to the output port of the shredder;

[0009] a ball mill, the input port of which is connected to the first output port of the ultrasonic cleaning machine;

[0010] a drum screening machine, the input port of which is connected to the output port of the ball mill, wherein the first output port of the drum screening machine is used to output the positive electrode material; and

[0011] The input port of the dryer is respectively connected with the second output port of the ultrasonic cleaning machine and the second output port of the drum screening machine, and the output port of the dryer is used for outputting the aluminum foil.

[0012] In one embodiment, the recovery device further comprises a pulping machine, and the pulping machine is connected to the first output port of the drum screening machine.

[0013] In one embodiment, the pulping machine includes a pulping tank, a driving member and a spiral agitator. The pulping tank is connected to the first output port of the drum screening machine. The spiral agitator is rotatably installed in the pulping tank. The driving member is arranged on the pulping tank and connected to one end of the spiral agitator.

[0014] In one embodiment, the recovery device further comprises a briquetting machine, and the input port of the briquetting machine is connected to the output port of the dryer.

[0015] In one embodiment, the briquetting machine has a gate valve, which is movably arranged at the input port of the briquetting machine.

[0016] In one embodiment, the recovery device further includes a first conveyor belt, a second conveyor belt and a third conveyor belt, wherein the first conveyor belt is connected to the input port of the shredder, the second conveyor belt is connected between the second output port of the ultrasonic cleaning machine and the input port of the dryer, and the third conveyor belt is connected between the second output port of the drum screening machine and the second conveyor belt.

[0017] In one embodiment, the recovery device further includes a return hopper, and the return hopper is arranged below the first conveyor belt.

[0018] In one embodiment, the recovery device further includes a scraper, and the scraper is arranged below the second conveyor belt; and / or the scraper is arranged below the third conveyor belt.

[0019] In one embodiment, the shredder has a first screen, the screen hole diameter of the first screen is D1, and satisfies: 2mm≤D1≤5mm.

[0020] In one embodiment, the ultrasonic cleaning machine has a second sieve, the sieve hole diameter of the second sieve is D2, and satisfies: 0.5mm≤D2≤0.6mm.

[0021] The beneficial effects of this application are:

[0022] When using the recovery device provided by the present application, the input port of the shredder receives the positive electrode sheets to be recycled, the positive electrode sheets are crushed by the shredder, and then input into the ultrasonic cleaning machine for washing and primary screening. The separated positive electrode material containing aluminum slag is input into the ball mill through the first output port of the ultrasonic cleaning machine for underwater ball milling, so that the positive electrode material is mixed with water to form a slurry, and the aluminum slag is extruded to form aluminum foil sheets, and then the two are input into the drum screening machine for secondary screening to obtain a positive electrode material that can meet the needs of use. At the same time, the second output port of the ultrasonic cleaning machine outputs the aluminum foil sheets obtained by the primary screening, and the second output port of the drum screening machine outputs the aluminum foil sheets obtained by the secondary screening, and the two are input into the dryer together for drying treatment to obtain aluminum foil sheets that can meet the needs of use. Since in the above-mentioned recovery process, the positive electrode sheets to be recycled are crushed and then successively undergo primary screening, ball milling and secondary screening, they have a better separation effect, so that the positive electrode material obtained has a higher purity and less impurity content.

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 relevant drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic structural diagram of a recovery device in some embodiments of the present application is shown.

[0026] Description of main component symbols:

[0027] 100-recovery device; 110-shredder; 120-ultrasonic cleaning machine; 130-ball mill; 140-drum screening machine; 150-dryer; 160-pulping machine; 161-pulping tank; 162-driving part; 163-spiral agitator; 170-briquetting machine; 181-first conveyor belt; 182-second conveyor belt; 183-third conveyor belt. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0032] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] The positive electrode sheet is a crucial component of a battery, consisting primarily of aluminum foil and the positive electrode material coated on the aluminum foil. Currently, during the recycling process of positive electrode sheets, the presence of adhesive in the sheets makes it difficult to separate the positive electrode material and aluminum foil. Therefore, the sheets must first be shredded in a shredder, then washed and sieved in an ultrasonic cleaner. The separated positive electrode material and aluminum foil are then dried separately for later use.

[0034] However, this recycling method has low separation accuracy, resulting in low purity of the separated positive electrode material and unsatisfactory recycling results. Furthermore, the separated aluminum foil is relatively scattered, making storage inconvenient and posing certain safety risks.

[0035] In order to solve the above technical problems, an embodiment of the present application provides a recycling device, which relates to the field of battery recycling technology and is mainly used to separate and recycle the positive electrode material and aluminum foil in the positive electrode sheet.

[0036] like Figure 1 As shown, the recycling device 100 provided in this embodiment includes: a shredder 110 , an ultrasonic cleaning machine 120 , a ball mill 130 , a drum screening machine 140 and a dryer 150 .

[0037] Among them, the input port of the shredder 110 is used to receive the positive electrode sheets to be recycled, the input port of the ultrasonic cleaning machine 120 is connected to the output port of the shredder 110, the input port of the ball mill 130 is connected to the first output port of the ultrasonic cleaning machine 120, the input port of the drum screening machine 140 is connected to the output port of the ball mill 130, the first output port of the drum screening machine 140 is used to output the positive electrode material, the input port of the dryer 150 is respectively connected to the second output port of the ultrasonic cleaning machine 120 and the second output port of the drum screening machine 140, and the output port of the dryer 150 is used to output aluminum foil sheets.

[0038] It should be noted that the shredder 110 has a shredding knife and a first screen. After the positive electrode sheet enters the shredder 110, the shredding knife first cuts the positive electrode sheet into pieces, and then screens it through the first screen and then inputs it into the ultrasonic cleaning machine 120 through the output port of the shredder 110. The ultrasonic cleaning machine 120 is externally connected to a water pipe and has a second screen. Hot water is introduced through the water pipe to wash the shredded positive electrode sheet fragments, and then filtered through the second screen to separate the aluminum foil and the positive electrode material containing aluminum slag. The ball mill 130 can be an overflow ball mill. The addition of water can ensure the safety of the aluminum slag ball milling process. Of course, the ball mill 130 can also be a grid-type ball mill. There is no specific restriction on the type of the ball mill 130 here. The drum screening machine 140 has the characteristics of high screening efficiency and convenient maintenance, which improves the recovery efficiency of the positive electrode sheet. Dryer 150 uses steam as a heat source and can be a vacuum dryer to reduce the risk of explosion caused by hydrogen generated by the aluminum foil reacting with water during friction, thereby improving safety. Of course, dryer 150 can also be a normal pressure dryer, and there is no specific limitation on the type of dryer 150.

[0039] It is understood that when the recovery device 100 provided in this embodiment is used, the input port of the shredder 110 receives the positive electrode sheets to be recycled, the positive electrode sheets are crushed by the shredder 110, and then input into the ultrasonic cleaning machine 120 for washing and primary screening. The separated positive electrode material containing aluminum slag is input into the ball mill 130 through the first output port of the ultrasonic cleaning machine 120 for underwater ball milling, so that the positive electrode material is mixed with water to form a slurry, and the aluminum slag is squeezed to form aluminum foil sheets, and then the two are input together into the drum screening machine 140 for secondary screening to obtain a positive electrode material that can meet the requirements of use. At the same time, the second output port of the ultrasonic cleaning machine 120 outputs the aluminum foil sheets obtained by the primary screening, and the second output port of the drum screening machine 140 outputs the aluminum foil sheets obtained by the secondary screening, and the two are input together into the dryer 150 for drying treatment to obtain aluminum foil sheets that can meet the requirements of use. Since in the above recycling process, the positive electrode sheets to be recycled are crushed and then undergo primary screening, ball milling and secondary screening, which has a better separation effect, the positive electrode material obtained in this way has higher purity and less impurity content.

[0040] like Figure 1 As shown, in one embodiment, the recovery device 100 further includes a pulper 160 , which is in communication with the first output port of the drum screening machine 140 .

[0041] In this embodiment, since the recovery device 100 further includes a pulping machine 160, the pulping machine 160 is connected to the first output port of the drum screening machine 140. In this way, the positive electrode material obtained by the secondary screening of the drum screening machine 140 is made into a slurry by the pulping machine 160, and the slurry can be directly used for the subsequent wet acid treatment process for lithium extraction.

[0042] like Figure 1 As shown, further, the pulping machine 160 includes a pulping tank 161, a driving member 162 and a spiral agitator 163. The pulping tank 161 is connected to the first output port of the drum screening machine 140. The spiral agitator 163 is rotatably arranged in the pulping tank 161. The driving member 162 is arranged on the pulping tank 161 and is connected to one end of the spiral agitator 163.

[0043] For example, the driving member 162 may be a device such as a rotary motor or a driving motor that can output torque to drive the spiral agitator 163 to rotate.

[0044] In this embodiment, the driving member 162 can drive the spiral stirrer 163 to rotate, thereby stirring the positive electrode material and water in the slurry tank 161 to form a slurry. Compared with conventional stirrers, the spiral stirrer 163 has a larger contact area with the material and is less likely to get stuck, thereby achieving more uniform stirring.

[0045] like Figure 1 As shown, in one embodiment, the recovery device 100 further includes a briquetting machine 170 , and an input port of the briquetting machine 170 is connected to an output port of the dryer 150 .

[0046] Illustratively, the pressure of the briquetting machine 170 can be selected from 18kg to 20kg, for example, any value among 18kg, 18.5kg, 18.6kg, 19kg, 19.2kg, 19.4kg, 19.5kg, 19.8kg, 20kg or any value in the range of any two of them, without specific limitation.

[0047] In this embodiment, the recycling device 100 further includes a briquetting machine 170, the input port of the briquetting machine 170 is connected to the output port of the dryer 150. Thus, the briquetting machine 170 can compress the piles of aluminum foil sheets dried by the dryer 150 into aluminum blocks, thereby reducing the space occupied by the aluminum foil sheets, making the aluminum foil sheets more convenient to store and reducing the safety risks associated with storage.

[0048] Furthermore, the briquetting machine 170 has a gate valve, which is movably arranged at the input port of the briquetting machine 170 .

[0049] In this embodiment, the briquetting machine 170 has a gate valve, which is movably disposed at the input port of the briquetting machine 170. Thus, the gate valve can be used to adjust the opening size of the input port of the briquetting machine 170, thereby achieving precise control of the input amount of aluminum foil, so that the briquetting machine 170 can compress the aluminum foil into aluminum blocks that meet the specification requirements.

[0050] like Figure 1 As shown, in one embodiment, the recycling device 100 further includes a first conveyor belt 181, a second conveyor belt 182 and a third conveyor belt 183, the first conveyor belt 181 is connected to the input port of the shredder 110, the second conveyor belt 182 is connected between the second output port of the ultrasonic cleaning machine 120 and the input port of the dryer 150, and the third conveyor belt 183 is connected between the second output port of the drum screening machine 140 and the second conveyor belt 182.

[0051] In this embodiment, the first conveyor belt 181 is connected to the input port of the shredder 110, the second conveyor belt 182 is connected between the second output port of the ultrasonic cleaning machine 120 and the input port of the dryer 150, and the third conveyor belt 183 is connected between the second output port of the drum screening machine 140 and the second conveyor belt 182. In this way, the output port of the shredder 110 is indirectly connected to the input port of the ultrasonic cleaning machine 120, the second output port of the ultrasonic cleaning machine 120 is indirectly connected to the input port of the dryer 150, and the second output port of the drum screening machine 140 is indirectly connected to the input port of the dryer 150.

[0052] Of course, for the above embodiment, a conveying pipe can also be used to achieve indirect communication between the above machines, or the output port of the shredder 110 can be directly connected to the input port of the ultrasonic cleaning machine 120, the second output port of the ultrasonic cleaning machine 120 can be directly connected to the input port of the dryer 150, and the second output port of the drum screening machine 140 can be directly connected to the input port of the dryer 150.

[0053] Furthermore, the recovery device 100 also includes a return hopper, which is arranged below the first conveyor belt 181.

[0054] In this embodiment, since a return hopper is provided below the first conveyor belt 181, the return hopper can collect the positive electrode sheets remaining on the first conveyor belt 181 that have not fallen into the shredder 110 in time, so as to reduce the possibility that the remaining positive electrode sheets accumulate at the bottom end of the first conveyor belt 181 and cause the first conveyor belt 181 to fail to convey normally.

[0055] Furthermore, the recovery device 100 further includes a scraper, which is arranged below the second conveyor belt 182; and / or the scraper is arranged below the third conveyor belt 183.

[0056] It should be noted that the above-mentioned “the scraper is arranged below the second conveyor belt 182; and / or the scraper is arranged below the third conveyor belt 183” means that a scraper may be arranged below the second conveyor belt 182 or below the third conveyor belt 183, or a scraper may be arranged below the second conveyor belt 182 and below the third conveyor belt 183 respectively.

[0057] In this embodiment, the scraper is provided to scrape off the aluminum foil remaining on the lower surface of the conveyor belt, thereby reducing the possibility of the aluminum foil sticking to the conveyor belt and affecting normal transportation.

[0058] It should be noted that the thickness of the first conveyor belt 181, the second conveyor belt 182, and the third conveyor belt 183 can be selected from 4 mm to 6 mm, for example, any value among 4 mm, 4.2 mm, 4.5 mm, 4.8 mm, 5 mm, 5.1 mm, 5.2 mm, 5.5 mm, 5.8 mm, and 6 mm, or any value within a range consisting of any two of them. The moving speed of the above three can be selected from 0.2 m / s to 0.5 m / s, for example, any value among 0.2 m / s, 0.22 m / s, 0.25 m / s, 0.28 m / s, 0.3 m / s, 0.32 m / s, 0.35 m / s, 0.38 m / s, 0.4 m / s, 0.45 m / s, 0.46 m / s, 0.49 m / s, and 0.5 m / s, or any value within a range consisting of any two of them.

[0059] In one embodiment, the shredder 110 has a first screen with a mesh diameter of D1 that satisfies the following relationship: 2 mm ≤ D1 ≤ 5 mm.

[0060] For example, the mesh diameter D1 of the first sieve can be any value among 2mm, 2.5mm, 3mm, 3.2mm, 4mm, 4.5mm, 4.6mm, 4.8mm, 5mm or any value in a range consisting of any two of them, and no specific limitation is made here.

[0061] In this embodiment, by controlling the mesh diameter D1 of the first screen of the shredder 110 within the range of 2 mm to 5 mm, the output port of the shredder 110 can output small electrode pieces whose size satisfies the above relationship, so that the subsequent ultrasonic cleaning machine 120 can wash and screen the piled small electrode pieces formed by the crushing.

[0062] In one embodiment, the ultrasonic cleaning machine 120 has a second sieve with a mesh diameter of D2, which satisfies: 0.5 mm ≤ D2 ≤ 0.6 mm, that is, 30 meshes to 40 meshes.

[0063] For example, the mesh diameter D2 of the second sieve can be selected from any value of 0.5 mm, 0.55 mm, 0.56 mm, 0.56 mm, 0.57 mm, 0.58 mm, 0.59 mm, 0.6 mm, or any value in a range consisting of any two of them.

[0064] In this embodiment, by controlling the mesh diameter D2 of the second sieve of the ultrasonic cleaning machine 120 within the range of 0.5 mm to 0.6 mm, the aluminum foil and the positive electrode material containing aluminum slag can be better screened once, so that the positive electrode material containing aluminum slag can be subsequently ball-milled by the ball mill 130 and the aluminum foil can be dried by the dryer 150.

[0065] In summary, the recovery device 100 provided in this embodiment includes a shredder 110, an ultrasonic cleaning machine 120, a ball mill 130, a drum screening machine 140, a dryer 150, a briquetting machine 170, a pulping machine 160, a first conveyor belt 181, a second conveyor belt 182, and a third conveyor belt 183. The first conveyor belt 181 is connected to the input port of the shredder 110, the output port of the shredder 110 is connected to the input port of the ultrasonic cleaning machine 120, the first output port of the ultrasonic cleaning machine 120 is connected to the input port of the ball mill 130, the output port of the ball mill 130 is connected to the input port of the drum screening machine 140, and the first output port of the drum screening machine 140 is connected to the pulping machine 160. The second conveyor belt 182 is connected between the second output port of the ultrasonic cleaning machine 120 and the input port of the dryer 150 , the third conveyor belt 183 is connected between the second output port of the drum screening machine 140 and the second conveyor belt 182 , and the output port of the dryer 150 is connected to the input port of the briquetting machine 170 .

[0066] It can be understood that when using the recovery device 100 provided in this embodiment, the first conveyor belt 181 inputs the positive electrode sheets to be recycled into the shredder 110, the shredder 110 crushes the positive electrode sheets, and inputs the crushed small electrode sheets into the ultrasonic cleaning machine 120 through the output port of the shredder 110, the ultrasonic cleaning machine 120 washes and screens the small electrode sheets once to obtain aluminum foil sheets and positive electrode materials containing aluminum slag, and the positive electrode materials containing aluminum slag are input into the ball mill 130 through the first output port of the ultrasonic cleaning machine 120 for underwater ball milling treatment, so that the positive electrode material is mixed with water to form a slurry, and the aluminum slag is extruded to form aluminum foil sheets, and then they are input into the drum screening machine 140 through the output port of the ball mill 130 for secondary screening, and the positive electrode material obtained by the secondary screening is input into the pulping machine through the first output port of the drum screening machine 140 to form a slurry. At the same time, the second output port of the ultrasonic cleaning machine 120 outputs the aluminum foil obtained by the first screening, and inputs it into the dryer 150 through the second conveyor belt 182. The second output port of the drum screening machine 140 outputs the aluminum foil obtained by the second screening, and inputs it into the dryer 150 through the third conveyor belt 183 and the second conveyor belt 182 in turn. The dryer 150 dries the aluminum foil and inputs the dried aluminum foil into the briquetting machine 170. The briquetting machine 170 compresses the piles of aluminum foil into aluminum blocks.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0068] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A recovery device, characterized in that: include: A shredder (110), the input port of which is used to receive the positive electrode sheets to be recycled; an ultrasonic cleaning machine (120), the input port of which is in communication with the output port of the shredder (110); a ball mill (130), the input port of which is in communication with the first output port of the ultrasonic cleaning machine (120); a drum screening machine (140), the input port of which is in communication with the output port of the ball mill (130), wherein the first output port of the drum screening machine (140) is used for outputting the positive electrode material; and The dryer (150) has an input port that is respectively connected to the second output port of the ultrasonic cleaning machine (120) and the second output port of the drum screening machine (140), and the output port of the dryer (150) is used to output the aluminum foil.

2. The recovery device according to claim 1, characterized in that The recovery device further comprises a pulping machine (160), and the pulping machine (160) is in communication with the first output port of the drum screening machine (140).

3. The recovery device according to claim 2, characterized in that: The pulping machine (160) includes a pulping tank (161), a driving member (162) and a spiral agitator (163). The pulping tank (161) is connected to the first output port of the drum screening machine (140). The spiral agitator (163) is rotatably arranged in the pulping tank (161). The driving member (162) is arranged on the pulping tank (161) and connected to one end of the spiral agitator (163).

4. The recovery device according to claim 1, characterized in that The recovery device further comprises a briquetting machine (170), wherein an input port of the briquetting machine (170) is connected to an output port of the dryer (150).

5. The recovery device according to claim 4, characterized in that: The briquetting machine (170) has a gate valve, which is movably arranged at the input port of the briquetting machine (170).

6. The recovery device according to any one of claims 1 to 5, characterized in that: The recycling device further comprises a first conveyor belt (181), a second conveyor belt (182) and a third conveyor belt (183), wherein the first conveyor belt (181) is connected to the input port of the shredder (110), the second conveyor belt (182) is connected between the second output port of the ultrasonic cleaning machine (120) and the input port of the dryer (150), and the third conveyor belt (183) is connected between the second output port of the drum screening machine (140) and the second conveyor belt (182).

7. The recovery device according to claim 6, characterized in that The recovery device further comprises a return hopper, which is arranged below the first conveyor belt (181).

8. The recovery device according to claim 6, characterized in that: The recovery device further comprises a scraper, wherein the scraper is arranged below the second conveyor belt (182); and / or the scraper is arranged below the third conveyor belt (183).

9. The recovery device according to any one of claims 1 to 5, characterized in that: The shredder (110) has a first screen, the screen hole diameter of the first screen is D1, and satisfies: 2mm≤D1≤5mm.

10. The recovery device according to any one of claims 1 to 5, characterized in that: The ultrasonic cleaning machine (120) has a second sieve, the sieve hole diameter of the second sieve is D2, and satisfies: 0.5mm≤D2≤0.6mm.

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