Battery powder wet method screening device

Abstract

A battery powder wet method sieving device, including a sieving frame, a placing plate, a sieving upper cover and a sieving stirring assembly; the sieving frame is placed on the placing plate, the middle part of the placing plate has a flow guide opening, the bottom surface of the sieving cavity of the sieving frame is a sieve screen located at the flow guide opening, and the sieving upper cover is detachably sealed and covered on the top surface of the sieving cavity of the sieving frame; the sieving stirring assembly includes a sieving stirring shaft and a sieving stirring motor, and the end of the sieving stirring shaft close to the sieve screen is provided with a scraper. Therefore, the sieving device can automatically filter the foreign matters in the slurry safely, without pollution and without external overflow, has good sieving efficiency, can conveniently take out or replace the sieving frame after sieving, so as to conveniently realize the extraction and separation of foreign matters and guarantee continuous production.

Description

Technical Field

[0001] This utility model relates to the technical field of battery manufacturing processes, and in particular to a wet screening device for battery powder. Background Technology

[0002] The presence of metallic foreign objects, especially large non-magnetic metallic foreign objects (which are not easily detected and removed), can cause short circuits during battery charging and discharging, leading to battery performance degradation or even safety accidents. Therefore, before the cathode powder is put into production, it is essential to accurately detect any metallic foreign objects to ensure the safety and reliability of the battery.

[0003] In the current testing process, for kilogram-level cathode powder, large non-magnetic metallic foreign objects typically require wet sieving before detection. This step involves mixing the powder with water or other dispersants to form a slurry, separating large foreign objects through manual stirring and sieving, and then drying the sample for subsequent testing.

[0004] However, manual sieving using existing screening screens can easily lead to slurry overflow, and the sieving efficiency is low and the material is easily contaminated. Utility Model Content

[0005] The purpose of this invention is to provide a wet screening device for battery powder, which can automatically screen foreign matter in powder in a highly efficient, pollution-free, and spill-free manner.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A wet sieving device for battery powder includes a sieving frame, a placement plate, a sieving cover, and a sieving stirring assembly.

[0008] The sieve frame is removably placed on the placement plate, which has a flow guide in the middle. The bottom surface of the sieve cavity of the sieve frame is a screen located at the flow guide. The sieve cover is detachably sealed to the top surface of the sieve cavity of the sieve frame. The sieve stirring assembly includes a sieve stirring shaft extending from the sieve cover into the sieve cavity and a sieve stirring motor for driving the sieve stirring shaft to rotate. A scraper is provided at the end of the sieve stirring shaft near the screen.

[0009] Furthermore, the scraper is a silicone soft scraper.

[0010] Furthermore, the sieve cover is provided with a feed inlet, and a feed connector is provided at the feed inlet. The feed connector is connected to a mixing device for mixing powder and water via a hose, and the feed connector is also provided with a vent and a liquid inlet.

[0011] Furthermore, the placement plate is mounted on the frame, and the outer periphery of the placement plate guide port has a groove for accommodating the sieve frame. Below the guide port, there is a liquid outlet section mounted on the frame.

[0012] Furthermore, the placement plate is provided with several support rods on the outer periphery of the sieve frame, and a locking knob is screwed to the top of the support rod; the periphery of the sieve cover overlaps with each support rod and is locked by the locking knob, and the bottom surface of the sieve cover has a sealing ring for sealing the overlap with the top edge of the sieve frame.

[0013] Furthermore, the placement plate is connected to the frame via several connecting shafts; the lower end of the connecting shaft is fixed to the frame, and the upper end of the connecting shaft is screwed with a fixing knob; the periphery of the placement plate overlaps with each connecting shaft and is locked in place by the fixing knob.

[0014] Furthermore, the outer periphery of the placement plate is provided with notches facing the same direction for each connecting shaft, and the notches allow the connecting studs at the top of the connecting shafts to pass through longitudinally and laterally.

[0015] Furthermore, the upper end of the sieving and stirring shaft passes through the sieving cover and is detachably connected to the lifting motor shaft at the bottom of the sieving and stirring motor, and the sieving and stirring shaft is rotatably connected to the bearing provided inside the sieving cover.

[0016] Furthermore, the bottom of the screening and stirring motor is provided with a positioning hole, and the shaft of the lifting motor is provided with a positioning groove. A positioning pin is movably inserted into the positioning hole, and the positioning pin is movably limited in the positioning groove.

[0017] After adopting the above technical solution, the screening device can not only save manpower to achieve automatic screening and automatically filter foreign objects in the slurry, but also has good screening efficiency. Moreover, the screening process ensures safety and no pollution, and the screened parts can be easily removed or replaced after screening, so as to facilitate the extraction and separation of foreign objects and ensure continuous production.

[0018] This screening device allows slurry to be fed in by opening the screening cover, while the top of the screening chamber is sealed by the screening cover, so that the slurry is stored in a sealed chamber during screening. This effectively isolates external contamination and prevents slurry overflow. A large amount of slurry can be screened at a time in the screening chamber, which can improve screening efficiency. The screening stirring motor drives the screening stirring shaft to rotate, which drives the scraper to scrape on the screen to ensure uniform distribution of slurry and speed up screening. The impurity-free slurry after screening can be discharged through the guide port for collection, which is convenient for subsequent production.

[0019] After sieving for a period of time, the sieve cover can be separated from the sieve frame, and the sieve frame can be removed from the placement plate. This makes it easy to extract the foreign objects trapped in the sieve frame, or to replace it with a new sieve frame. The replacement of the sieve frame is convenient and quick. After replacing it with a new sieve frame, the sieving production task can be resumed in time to ensure continuous production and guarantee sieving efficiency. Attached Figure Description

[0020] Figure 1 This is a perspective view of a sieving system constructed in conjunction with a mixing device according to an embodiment of the present invention;

[0021] Figure 2 This is an exploded view of an embodiment of the present utility model.

[0022] Figure 3 This is a front view of an embodiment of the present utility model;

[0023] Figure 4 This is a cross-sectional view of an embodiment of the present utility model;

[0024] Figure 5 This is a partial exploded view of an embodiment of the present utility model;

[0025] Figure 6 This is a perspective view of an embodiment of the present utility model.

[0026] Labeling Description: Mixing device 1, Sieving device 2, Sieving frame 21, Sieving chamber 211, Screen 212, Placement plate 22, Guide port 221, Embedded groove 222, Notch 223, Sieving cover 23, Feed inlet 231, Feed connector 232, Vent 233, Notch 234, Sealing ring 235, Bearing 236, Liquid inlet 237, Sieving and stirring assembly 24, Sieving and stirring shaft 241, Sieving and stirring motor 242, Scraper 243, Lifting motor shaft 244, Positioning hole 245, Positioning groove 246, Positioning pin 247, Hose 25, Support rod 26, Support stud 261, Locking knob 262, Connecting shaft 27, Connecting stud 271, Fixing knob 272, Frame 3, Upper partition 31, Middle partition 32, Liquid outlet 4. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] like Figure 1As shown in the figure, this embodiment provides a wet screening device 2 for battery powder. The screening device 2 can be used in conjunction with the mixing device 1 and both can be installed on the frame 3 to form a screening system. Of course, the screening device 2 can also be used independently.

[0029] The mixing device 1 can be used to automatically convey powder and water to the screening device 2 after mixing and stirring. The powder can be mixed with water first and then added to the mixing device 1 for stirring, or it can be mixed and stirred simultaneously in the mixing device 1 to form a slurry that is easy to screen later. The water can be pure water or other water free of impurities to avoid introducing new impurities.

[0030] Of course, the mixture can also be manually mixed to form a slurry before being fed into the screening device 2.

[0031] See Figure 1 and Figure 2 The sieving device 2 includes a sieving frame 21, a placement plate 22, a sieving cover 23, and a sieving stirring assembly 24.

[0032] The sieve frame 21 is removably placed on the placement plate 22, which has a guide port 221 in the middle. The bottom surface of the sieve cavity 211 of the sieve frame 21 is a screen 212 located at the guide port 221. The sieve cover 23 is detachably sealed to the top surface of the sieve cavity 211 of the sieve frame 21. The sieve stirring assembly 24 includes a sieve stirring shaft 241 extending from the sieve cover 23 into the sieve cavity 211 and a sieve stirring motor 242 for driving the sieve stirring shaft 241 to rotate. A scraper 243 is provided at one end of the sieve stirring shaft 241 near the screen 212.

[0033] Therefore, the screening device 2 in this embodiment can not only save manpower to achieve automatic screening and automatically filter foreign objects in the slurry, but also has good screening efficiency. Moreover, the screening frame 21 can be easily removed or replaced after screening to achieve the extraction and separation of foreign objects and ensure continuous production.

[0034] Specifically, when the screening device 2 is used, after the mixing device 1 or manual feeding is used, the top of the screening chamber 211 of the screening frame 21 is sealed by the screening cover 23, so that the slurry is stored in a closed chamber during screening, which can effectively isolate external pollution and prevent slurry from overflowing. A large amount of slurry can be screened in the screening chamber 211 at one time, which can improve the screening efficiency. The screening stirring motor 242 drives the screening stirring shaft 241 to rotate, which can drive the scraper 243 to scrape on the screen 212 to ensure the uniform distribution of slurry during screening and speed up screening. The impurity-free slurry after screening through the screen 212 can be discharged through the guide port 221 for collection, which is convenient for subsequent production.

[0035] After sieving for a period of time, the sieve cover 23 can be separated from the sieve frame 21, and the sieve frame 21 can be removed from the placement plate 22. This makes it easy to extract the foreign objects trapped in the sieve frame 21, or to replace it with a new sieve frame 21. The replacement of the sieve frame 21 is convenient and quick. After replacing it with a new sieve frame 21, the sieving production task can be resumed in time to ensure continuous production and guarantee sieving efficiency.

[0036] See Figure 2 In this embodiment, the scraper 243 can be a silicone soft scraper 243. This can prevent large particles of impurities from being squeezed out of the screen 212 by the scraper 243, effectively eliminating over-sieving and ensuring that the screen 212 can fully trap impurities and foreign objects.

[0037] See Figure 1 The sieve cover 23 may have a feed inlet 231 that communicates with the mixing device 1, so that the slurry that is stirred evenly in the mixing device 1 can enter the sieve frame 21 through the feed inlet 231 of the sieve cover 23.

[0038] See Figure 6 In this embodiment, the feed inlet 231 of the sieve cover 23 is provided with a feed connector 232, which is connected to the mixing device 1 via a hose 25. The feed connector 232 also has a vent 233 on one side and a liquid inlet 237 on the other side. The vent 233 allows for ventilation of the sealed sieve cavity 211, maintaining appropriate positive pressure, which helps the powder pass through the sieve evenly. Simultaneously, the liquid inlet 237 allows for flushing of the edges of the sieve 212 with water when material accumulates on the screen 212 and is not scraped by the scraper 243, thus cleaning the accumulated material. The sieve cover 23 is connected to the mixing device 1 via the hose 25, allowing the hose 25 to be removed when separating the sieve cover 23 and the sieve frame 21, ensuring that production can be quickly resumed after the sieve cover 23 is re-closed.

[0039] like Figure 1 As shown, the front of the frame 3 may be provided with three partitions: upper, middle and lower. The mixing device 1 may be installed above the upper partition 31, and the screening device 2 may be installed on the middle partition 32.

[0040] In this embodiment, the placement plate 22 can be mounted on the frame 3. The outer periphery of the guide port 221 of the placement plate 22 has a groove 222 for accommodating the sieve frame 21, so as to facilitate the mounting and positioning of the sieve frame 21.

[0041] Below the guide port 221 of the placement plate 22, there is a liquid outlet 4 disposed on the partition plate 32 in the frame 3; the liquid outlet 4 may be funnel-shaped to facilitate the flow of slurry.

[0042] See Figure 2 and Figure 5 The groove 222 has several support rods 26 surrounding the sieve frame 21. In this embodiment, the support rods 26 are arranged in three circumferentially spaced positions. The bottom of each support rod 26 can be screwed onto the placement plate 22, and the top of the support rod 26 can have a support stud 261 protruding from it. The support stud 261 is screwed with a locking knob 262. The sieve cover 23 overlaps the upper end of each support rod 26 and is locked by the locking knob 262. Specifically, a notch 234 can be provided around the sieve cover 23 corresponding to each support stud 261. The notch 234 can facilitate the support stud 261 to pass through. After the upper end of the support stud 261 is locked by the locking knob 262, the sieve cover 23 can be pressed onto the support rod 26 and also pressed onto the sieve frame 21 to seal the top of the sieve cavity 211.

[0043] In this embodiment, the bottom surface of the sieve cover 23 also has a sealing ring 235 for sealing and overlapping the top edge of the sieve frame 21. The sealing ring 235 can be snapped onto the bottom surface of the sieve cover 23 to improve the sealing effect.

[0044] In this embodiment, the placement plate 22 is connected to the frame 3 via several connecting shafts 27, which means that the plate can be fixed using the connecting shafts 27. In this embodiment, the connecting shafts 27 are arranged in three circumferentially spaced positions, with each connecting shaft 27 surrounding the outer periphery of the liquid outlet 4. The lower end of the connecting shaft 27 is fixed to the frame 3, and the lower end of the connecting shaft 27 can be locked to the partition plate 32 in the frame 3. A fixing knob 272 is screwed onto the upper end of the connecting shaft 27, and the upper end of the connecting shaft 27 may also have a connecting stud 271 to facilitate the screwing of the fixing knob 272. The periphery of the placement plate 22 overlaps the upper end of each connecting shaft 27 and is locked by the fixing knob 272. In other words, the placement plate 22 can be pressed and locked by the cooperation of the fixing knob 272 and the connecting shaft 27.

[0045] In this embodiment, the outer periphery of the placement plate 22 is provided with notches 223 facing the same direction, corresponding to the positions of each connecting shaft 27. The notches 223 allow the connecting studs 271 at the top of the connecting shaft 27 to pass through longitudinally and laterally. In this embodiment, the notches 223 are arranged facing backward, so that the placement plate 22 can be pulled forward away from the frame 3, and can be pulled out of the frame 3 together with the screening frame 21, further facilitating the disassembly and replacement of the screening frame 21.

[0046] like Figure 3 and Figure 4As shown, in this embodiment, the upper end of the sieving stirring shaft 241 passes through the sieving cover 23 and is detachably connected to the lifting motor shaft 244 at the bottom of the sieving stirring motor 242. The sieving stirring shaft 241 is rotatably connected to a bearing 236 disposed within the sieving cover 23. In this embodiment, a lifting motor shaft 244 can be disposed at the bottom of the sieving stirring motor 242, thereby driving the sieving stirring shaft 241 to rotate while simultaneously lifting it up and down. This, in turn, allows the bearing 236 to work with the sieving cover 23 to lift up and down together. In other words, when disassembling the sieving cover 23, the sieving stirring shaft 241 and the scraper 243 can be disassembled together.

[0047] In this embodiment, the lifting motor shaft 244 can be raised and lowered by the cooperation of the positioning hole 245 at the bottom of the sieving and stirring motor 242, the positioning groove 246 on the lifting motor shaft 244, and the positioning pin 247 that is movably inserted in the positioning hole 245 and the positioning groove 246.

[0048] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.

[0049] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. A wet sieving device for battery powder, characterized in that: Includes a sieve frame, a placement plate, a sieve cover, and a sieve mixing assembly; The sieve frame is removably placed on the placement plate, which has a flow guide in the middle. The bottom surface of the sieve cavity of the sieve frame is a screen located at the flow guide. The sieve cover is detachably sealed to the top surface of the sieve cavity of the sieve frame. The sieve stirring assembly includes a sieve stirring shaft extending from the sieve cover into the sieve cavity and a sieve stirring motor for driving the sieve stirring shaft to rotate. A scraper is provided at the end of the sieve stirring shaft near the screen.

2. The wet screening device for battery powder according to claim 1, characterized in that: The scraper is a silicone soft scraper.

3. The wet screening device for battery powder according to claim 1, characterized in that: The sieve cover is provided with a feed inlet, and a feed connector is provided at the feed inlet. The feed connector is connected to a mixing device for mixing powder and water via a hose.

4. The wet screening device for battery powder according to claim 3, characterized in that: The feed connector is also equipped with an air inlet and a liquid inlet.

5. The wet screening device for battery powder according to claim 1, characterized in that: The placement plate is mounted on the frame, and the outer periphery of the placement plate guide port has a groove for accommodating the sieve frame. The liquid outlet is connected to the bottom of the guide port and is mounted on the frame.

6. The wet screening device for battery powder according to claim 5, characterized in that: The placement plate is provided with several support rods on the outer periphery of the sieve frame, and a locking knob is screwed to the top of the support rods; the periphery of the sieve cover overlaps with each support rod and is locked by the locking knob, and the bottom surface of the sieve cover has a sealing ring for sealing the overlap with the top edge of the sieve frame.

7. A wet sieving device for battery powder according to claim 1 or 5, characterized in that: The placement plate is connected to the frame via several connecting shafts; the lower end of the connecting shaft is fixed to the frame, and the upper end of the connecting shaft is screwed with a fixing knob; the periphery of the placement plate overlaps with each connecting shaft and is locked by the fixing knob.

8. The wet screening device for battery powder according to claim 7, characterized in that: The outer periphery of the placement plate is provided with notches facing the same direction for each connecting shaft, and the notches allow the connecting studs at the top of the connecting shafts to pass through longitudinally and laterally.

9. A wet screening device for battery powder according to claim 5, characterized in that: The upper end of the sieving and stirring shaft passes through the sieving cover and is detachably connected to the lifting motor shaft at the bottom of the sieving and stirring motor. The sieving and stirring shaft is rotatably connected to the bearing installed inside the sieving cover.

10. A wet sieving device for battery powder according to claim 9, characterized in that: The bottom of the screening and stirring motor is provided with a positioning hole, and the shaft of the lifting motor is provided with a positioning groove. A positioning pin is movably inserted into the positioning hole, and the positioning pin is movably limited in the positioning groove.

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