A kind of lithium battery separator processing dehydration machine

Abstract

The utility model relates to a kind of dewatering machine for lithium battery diaphragm processing, including rack, and motor and dehydration chamber being installed on rack;Dehydration roller of horizontal distribution is installed in dehydration chamber, dehydration cage with gap structure is installed on dehydration roller, motor drives dehydration roller high-speed rotation by tire type coupling;Inlet is installed in the top of dehydration chamber, its side portion is equipped with discharge port, and its bottom is equipped with liquid collection area and drain outlet.The utility model drives dehydration roller high-speed rotation by motor, utilizes centrifugal screw, to realize the solid-liquid separation of extraction liquid and diaphragm particle.Extraction liquid is thrown from self-made new dehydration cage, separation efficiency is improved, and particle residual liquid volume is significantly reduced.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, and in particular to a dehydrator for lithium battery separator processing, used to efficiently separate the mixture composed of separator particles and extract. Background Technology

[0002] In the recycling process of lithium battery separators, an extractant is typically used to extract the white oil adhering to the separator. The lower the oil content of the newly produced particles, the higher their value. Therefore, after regenerating and granulating waste separators, the white oil adhering to the surface of the separator particles needs to be washed and separated. After washing, the particles need to be dried in a dryer to become reusable new particles. Because the extractant has a low boiling point, it absorbs a large amount of heat upon entering the drying chamber. Therefore, the lower the liquid content in the washed particles before entering the drying chamber, the higher the efficiency. Thus, a dedicated dehydration device capable of high-speed, automatic separation of separator particles from the extractant is needed.

[0003] Currently, the common method for solid-liquid separation involves using a simple screen to transport the wet plastic particles and the separated liquid to different devices for further processing. This method has the following drawbacks: Incomplete separation: Poor primary separation results in a large amount of liquid remaining on the surface of plastic particles, increasing the load on subsequent dehydration and making the screen easy to clog.

[0004] Low safety factor: The extract is toxic, has a boiling point below room temperature, is easily volatile, and can easily cause great harm to the human body.

[0005] Low level of automation: After separation, a conveying device is still needed to transport the product to the drying chamber. Each step is operated independently, making it difficult to achieve continuous and automated production, resulting in high labor costs.

[0006] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a dehydration machine for lithium battery separator treatment, making it more industrially valuable. Utility Model Content

[0007] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a dehydrator for lithium battery separator treatment.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A dehydrator for lithium battery separator processing includes a frame, a motor mounted on the frame, and a dehydration chamber; The dewatering chamber is equipped with horizontally distributed dewatering rollers, and a dewatering cage with a slit structure is installed on the dewatering rollers. The motor drives the dewatering rollers to rotate at high speed through a tire coupling. The dehydration cage consists of multiple parallel rings and triangular bars welded to them, with gaps between adjacent triangular bars forming a liquid discharge structure. The dewatering roller has a hollow structure with several high-pressure air nozzles installed on its surface, and is connected to an external compressed air source through a rotary joint at the shaft end; Spiral guide blades are installed inside the dewatering roller to push solid particles toward the discharge port; The dehydration chamber has an inlet at the top, an outlet on the side, and a collection area and a drain at the bottom.

[0009] As a further improvement of this utility model, the two ends of the dewatering roller are rotatably mounted on the frame through a drive bearing seat and an operating side bearing seat, respectively. Bearings and oil seals are installed in both the drive bearing seat and the operating side bearing seat, and drive bearing covers and operating side bearing covers are respectively covered on the outside of the drive bearing seat and the operating side bearing seat.

[0010] As a further improvement of this utility model, both the drive bearing cover and the operating side bearing cover are sealed by O-rings.

[0011] As a further improvement of this utility model, the dehydration chamber is detachably and sealingly connected with a left cover plate, a right cover plate and a top cover plate. A first sealing gasket is provided between the left cover plate and the dehydration chamber, a second sealing gasket is provided between the right cover plate and the dehydration chamber, and a third sealing gasket is provided between the top cover plate and the dehydration chamber. Furthermore, viewing windows are installed on both the left cover plate and the right cover plate.

[0012] As a further improvement of this utility model, the motor is mounted on a motor base on the frame, and a drive motor safety cover is installed on the outside of the tire coupling.

[0013] As a further improvement of this utility model, a dewatering roller protective cover is provided on the outer side of the dewatering roller, and the dewatering roller protective cover is sealed to the inner wall of the dewatering chamber.

[0014] As a further improvement of this utility model, a frame-mounted water-receiving funnel is installed at the bottom of the drain outlet, and a funnel inspection door is installed on one side of the liquid collection area.

[0015] By means of the above solution, this utility model has at least the following advantages: This invention utilizes a motor-driven high-speed dehydration roller and a centrifugal spiral to achieve solid-liquid separation between the extract and the membrane particles. The extract is ejected from a self-made novel dehydration cage, improving separation efficiency and significantly reducing the amount of residual liquid among the particles.

[0016] The high-pressure air nozzle self-cleaning system effectively prevents clogging and ensures continuous and stable operation.

[0017] The fully sealed structure design prevents the leakage of toxic volatiles and improves the safety of the working environment.

[0018] It has a high degree of automation and can achieve seamless integration with upstream and downstream processes.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following are the preferred embodiments of this utility model and are described in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a dehydrator for lithium battery separator treatment according to this utility model; Figure 2 yes Figure 1 Rear view; Figure 3 yes Figure 1 Side view.

[0022] The meanings of the labels in the figures are as follows.

[0023] 1. Frame; 2. Tire-type coupling; 3. Motor; 4. Dewatering cage; 5. Discharge port; 6. Inlet port; 7. Drive bearing seat; 8. Operating side bearing seat; 9. Drive bearing cover; 10. Operating side bearing cover; 11. Left side cover plate; 12. Right side cover plate; 13. Top cover plate; 14. First sealing gasket; 15. Second sealing gasket; 16. Third sealing gasket; 17. Motor seat; 18. Viewing window; 19. Drive motor safety cover; 20. Dewatering roller; 21. Bearing; 22. Dewatering roller protective cover; 23. Rotary joint; 24. Frame water receiving funnel; 25. Funnel inspection door; 26. O-ring seal; 27. Oil seal. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] The first embodiment of this utility model: like Figures 1-3 As shown, a dehydrator for lithium battery separator processing according to this embodiment includes a frame 1, a motor 3 mounted on the frame 1, and a dehydration chamber.

[0027] The motor 3 is mounted on the motor base 17 on the frame 1, and a drive motor safety cover 19 is installed on the outside of the tire coupling 2.

[0028] A horizontally distributed dewatering roller 20 is installed in the dewatering chamber, and a dewatering cage 4 with a slit structure is installed on the dewatering roller 20. The motor 3 drives the dewatering roller 20 to rotate at high speed through a tire coupling 2.

[0029] The dehydration chamber is detachably and sealed with a left cover plate 11, a right cover plate 12 and a top cover plate 13. A first sealing gasket 14 is provided between the left cover plate 11 and the dehydration chamber, a second sealing gasket 15 is provided between the right cover plate 12 and the dehydration chamber, and a third sealing gasket 16 is provided between the top cover plate 13 and the dehydration chamber.

[0030] Specifically, the dehydration chamber adopts a fully sealed structure. The left cover plate 11, the right cover plate 12, and the top cover plate 13 are all connected to the dehydration chamber shell through quick-release buckles. A first sealing gasket 14, a second sealing gasket 15, and a third sealing gasket 16 are respectively provided between each cover plate and the shell. The sealing gaskets are made of fluororubber, which has good corrosion resistance and sealing performance.

[0031] Viewing windows 18 are installed on both the left cover plate 11 and the right cover plate 12. The viewing windows adopt a double-layer tempered glass structure with inert gas filling the middle, which ensures both clear observation and safety performance.

[0032] The two ends of the dewatering roller 20 are rotatably mounted on the frame 1 via a drive bearing housing 7 and an operating side bearing housing 8, respectively. Bearings 21 and oil seals 27 are installed inside both the drive bearing housing 7 and the operating side bearing housing 8. A drive bearing cover 9 and an operating side bearing cover 10 are respectively fitted onto the outer sides of the drive bearing housing 7 and the operating side bearing housing 8. Both the drive bearing cover 9 and the operating side bearing cover 10 are sealed by O-ring seals 26.

[0033] The dehydration cage 4 consists of multiple parallel circular rings and triangular bars welded to them, with gaps between adjacent triangular bars forming a liquid discharge structure. The dehydration cage 4 is made of 316L stainless steel, which has excellent corrosion resistance.

[0034] The dewatering roller 20 has a hollow structure with several high-pressure air nozzles installed on its surface, and is connected to an external compressed air source through a rotary joint 23 at the shaft end.

[0035] Specifically, the dewatering roller 20 is made of 304 stainless steel. The interior of the dewatering roller 20 has a hollow structure, and 48 high-pressure air nozzles are evenly arranged on its surface. The nozzle orifice diameter is 2mm. The dewatering roller 20 is connected to an external compressed air system through a rotary joint 23 at the shaft end, and the compressed air pressure is adjustable.

[0036] Inside the dewatering roller 20, spiral guide blades are installed to push solid particles toward the discharge port 5. The blades are made of wear-resistant stainless steel, with the pitch gradually decreasing from 200mm at the feed end to 120mm at the discharge end, and the blade height is 60mm. This variable pitch design ensures both efficient conveying at the feed end and compaction of the material at the discharge end, further improving the dewatering effect.

[0037] The dewatering roller 20 is covered by a dewatering roller protective cover 22, and the dewatering roller protective cover 22 is sealed to the inner wall of the dewatering chamber.

[0038] A feed inlet 6 is installed at the top of the dehydration chamber, a discharge outlet 5 is installed on its side, and a liquid collection area and a drain outlet are installed at the bottom. A frame-mounted water collection funnel 24 is installed at the bottom of the drain outlet, and a funnel inspection door 25 is installed on one side of the liquid collection area.

[0039] Specifically, the bottom of the frame 1 is equipped with a liquid collection area, which is inclined at an angle of 5 to 20 degrees to facilitate liquid collection. The bottom of the liquid collection area is connected to the drain pipe through a water receiving funnel 24 on the frame. The water receiving funnel 24 is coated with polytetrafluoroethylene to prevent corrosion by the extractant. A funnel inspection door 25 is provided on the side of the liquid collection area. The inspection door adopts a quick-opening structure for easy daily maintenance and cleaning.

[0040] The second embodiment of this utility model: like Figures 1-3As shown, this embodiment of a dehydrator for lithium battery separator treatment uses a horizontal spiral centrifugal dehydrator. The mixture is "layered" within a high-speed rotating drum, and a spiral rotating at a slight speed difference acts like a screw pump, pushing out the settled solids, while the extracted liquid is flung out through the gaps in the dehydration cage and flows to the bottom drain. The mixture enters the device from the top inlet, and under the powerful centrifugal force, the solid particles are rapidly discharged from the side outlet.

[0041] The main body of the device in this embodiment consists of a frame 1, a motor 3, and a dehydration chamber. The motor (with a drive motor safety cover 19 for safety protection) fixed on the motor base 17 rotates at high speed, driving the dehydration roller 20 connected to the tire coupling 2. The mixture enters from the upper feed port 6 and rotates at high speed in the dehydration cage 4 driven by the blades on the shaft. The extract is separated from the dehydration cage and flows into the bottom collection area, finally exiting through the water funnel 24 on the frame. A funnel inspection door 25 is provided on the side, which can be opened to clear material in case of blockage. The solid particles are finally discharged from the side discharge port 5. The most important part of the dehydration chamber is the dehydration roller 20, which is fixed by the drive bearing seat 7 and the operating side bearing seat 8, both equipped with bearings 21 and oil seals 27 at both ends. The bearing seats at both ends also have their own sealing covers: the drive bearing cover 9 and the operating side bearing cover 10, sealed by O-ring seals 26. The dehydration roller is also equipped with a high-pressure air nozzle and a dehydration roller protective cover 22. Compressed air is connected through a rotary joint 23 to clean the easily clogged dehydration cage 4. There are also three removable covers around the dehydration chamber: a left cover 11, a right cover 12, and a top cover 13. These are sealed with a first sealing gasket 14, a second sealing gasket 15, and a third sealing gasket 16. The left cover 11 and the right cover 12 also have viewing windows 18 to facilitate observation of whether the dehydration cage 4 is clogged.

[0042] According to the original process flow, after the membrane particles were extracted, they were directly sent to the dryer for drying. However, it was found that directly sending them into the dryer caused a sudden drop in temperature and excessive liquid content, leading to leakage. The current method involves adding a dehydrator in the middle to separate a large amount of extract before sending it to the dryer, which is much more efficient. Compared with traditional dehydrators, this embodiment uses a self-made dehydration cage and a dehydration roller with an air nozzle, which greatly improves the efficiency of solid-liquid separation.

[0043] In this embodiment, a motor drives a high-speed dehydration roller to rotate, utilizing a centrifugal spiral to achieve solid-liquid separation between the extract and the membrane particles. The extract is ejected from a self-made, novel dehydration cage. This cage uses a fixed circular ring with a triangular bar welded to it, sealed at both ends, forming a dehydration cage that provides better performance than traditional dehydration cages.

[0044] In this embodiment, the dewatering roller is an internally hollow roller with a high-pressure air nozzle installed on the roller surface. Compressed air is connected through a rotary joint at the shaft end to achieve 360-degree air blowing without dead angles in the dewatering cage, ensuring that the dewatering cage does not get clogged.

[0045] In this embodiment, the dehydration chambers all have removable covers, sealed with gaskets, and have viewing windows on the covers to allow for easy observation of the internal conditions. The bottom liquid receiving area also has an inspection door for convenient cleaning of any blockages.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A dehydrator for lithium battery separator treatment, comprising a frame (1), a motor (3) mounted on the frame (1), and a dehydration chamber; Its features are: A horizontally distributed dewatering roller (20) is installed in the dewatering chamber, and a dewatering cage (4) with a slit structure is installed on the dewatering roller (20). The motor (3) drives the dewatering roller (20) to rotate at high speed through a tire coupling (2). The dehydration cage (4) is composed of multiple parallel circular rings and triangular bars welded thereon, with a gap structure for liquid discharge formed between adjacent triangular bars. The dewatering roller (20) has a hollow structure, with several high-pressure air nozzles installed on its surface, and is connected to an external compressed air source through a rotary joint (23) at the shaft end; Spiral guide blades are installed inside the dewatering roller (20) to push solid particles toward the discharge port (5); An inlet (6) is installed at the top of the dehydration chamber, an outlet (5) is installed on its side, and a liquid collection area and a liquid discharge port are installed at its bottom.

2. The dehydrator for lithium battery separator treatment as described in claim 1, characterized in that, The two ends of the dewatering roller (20) are rotatably mounted on the frame (1) via a drive bearing seat (7) and an operating side bearing seat (8), respectively. Bearings (21) and oil seals (27) are installed in both the drive bearing seat (7) and the operating side bearing seat (8), and drive bearing covers (9) and operating side bearing covers (10) are respectively covered on the outside of the drive bearing seat (7) and the operating side bearing seat (8).

3. A dehydrator for lithium battery separator treatment as described in claim 2, characterized in that, Both the drive bearing cover (9) and the operating side bearing cover (10) are sealed by O-rings (26).

4. A dehydrator for lithium battery separator treatment as described in claim 1, characterized in that, The dehydration chamber is detachably and sealed with a left cover plate (11), a right cover plate (12) and a top cover plate (13). A first sealing gasket (14) is provided between the left cover plate (11) and the dehydration chamber, a second sealing gasket (15) is provided between the right cover plate (12) and the dehydration chamber, and a third sealing gasket (16) is provided between the top cover plate (13) and the dehydration chamber. A viewing window (18) is installed on both the left cover plate (11) and the right cover plate (12).

5. A dehydrator for lithium battery separator treatment as described in claim 1, characterized in that, The motor (3) is mounted on a motor mount (17) on the frame (1), and a drive motor safety cover (19) is installed on the outside of the tire coupling (2).

6. A dehydrator for lithium battery separator treatment as described in claim 1, characterized in that, The dewatering roller (20) is covered with a dewatering roller protective cover (22), and the dewatering roller protective cover (22) is sealed to the inner wall of the dewatering chamber.

7. A dehydrator for lithium battery separator treatment as described in claim 1, characterized in that, A frame-mounted water-receiving funnel (24) is installed at the bottom of the drain outlet, and a funnel inspection door (25) is installed on one side of the collection area.

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