Filtering device for lithium battery electrolyte production

Abstract

The invention provides a filtering device for lithium battery electrolyte production, and belongs to the technical field of new energy, the filtering device comprises a base plate, a rotating cylinder and a connecting pressing plate, a filter membrane is mounted between the base plate and the connecting pressing plate, a plurality of butt-joint holes are formed in the circumferential surface of the base plate, each butt-joint hole is composed of a straight section and an arc-shaped section, the cylinder is conical, and the rotating cylinder is connected with the connecting pressing plate. The diameter of the section of the barrel body is in the trend of increasing from bottom to top, a rotating barrel is rotationally installed at the bottom of the barrel body, an outer sleeve rod is fixedly installed on the rotating barrel, a wedge-shaped block is installed in the outer sleeve rod in a sliding mode, an elastic piece is connected between the wedge-shaped block and the outer sleeve rod, and a plurality of turbulent flow rods are installed on the rotating barrel. A movable pipe is movably installed on the connecting pressing plate, a liquid pumping pipe is fixedly installed on the connecting pressing plate, clamping and fixing of the rotating cylinder and the base plate are achieved through a wedge-shaped block and a straight section, in addition, separation of the wedge-shaped block and a butt joint hole is achieved through an arranged arc-shaped section, and installation and disassembly are more convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy equipment, and specifically relates to a filtering device for the production of lithium battery electrolyte. Background Art

[0002] At present, an electrolyte filter is a device used to filter electrolytes. It is a special device for filtering electrolytes, mainly used to remove various impurities in the electrolyte, including but not limited to solid particles, colloidal substances, metal ions, organic substances, etc., to improve the purity and quality of the electrolyte. It has important applications in fields such as battery production. It can remove impurity particles in the electrolyte, improve the purity of the electrolyte, and thus ensure the performance and service life of the battery; since the filter holes on the surface of the internal filter element are easily blocked by impurities after a long period of filtering work, it is necessary to frequently clean and maintain the filter element. After too many fixing parts fix the filter element, it is easy to cause the replacement and cleaning process of the filter element to be cumbersome and reduce work efficiency. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the embodiments of the present invention is to provide a filtering device for the production of lithium battery electrolyte.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A filtering device for the production of lithium battery electrolyte, including a cylinder body and a filter membrane. The filter membrane is installed inside the cylinder body. It also includes a base plate, a rotating cylinder, and a connecting pressing plate. One end of the cylinder body is provided with a cover plate, and a liquid outlet pipe is provided on the cover plate. A liquid inlet pipe is provided on the cylinder body. A second liquid discharge pipe is provided between the inner wall of the cylinder body and the rotating cylinder. The liquid inlet pipe is used for inletting the electrolyte, the liquid outlet pipe is used for discharging the filtered electrolyte, and the second liquid discharge pipe is used for discharging the waste liquid;

[0005] The filter membrane is installed between the base plate and the connecting pressing plate. A plurality of docking holes are formed on the circumferential surface of the base plate. The docking holes are composed of a straight section and an arc section. The cylinder body is conical, and the cross-sectional diameter of the cylinder body shows an increasing trend from bottom to top. The rotating cylinder is rotatably installed at the bottom of the cylinder body. An outer sleeve rod is fixedly installed on the rotating cylinder. A wedge block is slidably installed inside the outer sleeve rod. An elastic member is connected between the wedge block and the outer sleeve rod. The moving direction of the wedge block is perpendicular to the inserting direction of the base plate. A plurality of flow disturbing rods are installed on the rotating cylinder;

[0006] A movable pipe is movably installed on the connecting pressing plate. A liquid suction pipe is fixedly installed on the connecting pressing plate. One end of the movable pipe is communicated with the liquid suction pipe, and the other end of the movable pipe is communicated with the liquid outlet pipe. The end of the liquid suction pipe away from the movable pipe touches the upper surface of the base plate.

[0007] As a further improvement solution: A number of connecting rods are fixedly installed on the base plate. One end of the connecting rod far away from the base plate is fixedly installed with a connecting head. A threaded groove is formed on the outer peripheral surface of the connecting head. The connecting head is threadedly connected with a connecting pressing plate through the threaded groove. The filter membrane is coated on the outer peripheral surface of the connecting rod.

[0008] As a further improvement solution: A number of ring rib rods are fixedly installed on a number of the connecting rods.

[0009] As a further improvement solution: An annular first inclined surface is fixedly installed between the rotating cylinder and the base plate.

[0010] As a further improvement solution: A number of flow disturbing rods are rotatably installed on the rotating cylinder. External threads are provided on the flow disturbing rods. One end of the flow disturbing rod far away from the rotating cylinder is fixedly installed with a limiting plate. The flow disturbing rod is threadedly connected with a moving block. One end of the moving block is fixedly installed with a cleaning member. When the moving block moves to the bottommost position, the cleaning member is in contact with the bottom surface of the cylinder body. The flow disturbing rod is in transmission connection with the cylinder body.

[0011] As a further improvement solution: A gear is fixedly installed at one end of the flow disturbing rod penetrating through the rotating cylinder. A transmission groove is formed on the inner bottom surface of the cylinder body. The gear is located in the transmission groove. A toothed ring is fixedly installed in the transmission groove. The toothed ring is meshed with the gear.

[0012] As a further improvement solution: A resisting rod is fixedly installed at the other end of the moving block. A universal ball is movably installed at one end of the resisting rod. The upper surface of the limiting rod is flush with the connecting pressing plate after installation.

[0013] As a further improvement solution: A top rod is fixedly installed on the limiting plate. A skeleton plate is fixedly installed on the cylinder body. An annular groove is formed on the skeleton plate. The top rod is located in the annular groove.

[0014] As a further improvement solution: A second inclined surface is arranged between the rotating cylinder and the inner wall of the cylinder body. The second inclined surface inclines towards the rotating cylinder. A second drain pipe is further arranged at the position of the bottom of the cylinder body between the inner wall of the cylinder body and the second inclined surface.

[0015] As a further improvement solution: Stop rods are fixedly installed on both sides of the moving block on the rotating cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The clamping and fixing of the rotating cylinder and the base plate are realized through the wedge block and the straight section on the docking hole. In addition, the separation of the wedge block and the docking hole is realized through the arranged arc section, so that the overall installation and disassembly of the base plate, the filter membrane and the connecting pressing plate are more convenient. Secondly, a spoiler rod is also provided, which can drive the spoiler rod to rotate through the rotating cylinder, so as to realize the stirring and mixing of the electrolyte and make the impurities move to the far end under the action of centrifugal force. Thirdly, when the base plate, the filter membrane and the connecting pressing plate are integrally installed and disassembled, the spoiler rod extending above the liquid level can realize the preliminary positioning of the base plate, the filter membrane and the connecting pressing plate as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of a filtering device for the production of lithium battery electrolyte Figure 1 ;

[0018] Figure 2 is a schematic diagram of the overall structure of a filtering device for the production of lithium battery electrolyte Figure 2 ;

[0019] Figure 3 is a schematic sectional view of the overall structure of a filtering device for the production of lithium battery electrolyte;

[0020] Figure 4 is a schematic diagram of the filter membrane installation structure of a filtering device for the production of lithium battery electrolyte;

[0021] Figure 5 is a schematic diagram of the ring rib rod structure of a filtering device for the production of lithium battery electrolyte;

[0022] Figure 6 is a schematic diagram of the connector structure of a filtering device for the production of lithium battery electrolyte;

[0023] Figure 7 is a schematic sectional view of the base plate of a filtering device for the production of lithium battery electrolyte;

[0024] Figure 8 is a schematic sectional view of the cylinder body of a filtering device for the production of lithium battery electrolyte;

[0025] Figure 9 is a schematic diagram of the spoiler rod and the retaining rod structure of a filtering device for the production of lithium battery electrolyte;

[0026] Figure 10 is a schematic diagram of the spoiler rod structure of a filtering device for the production of lithium battery electrolyte;

[0027] Figure 11 is a schematic diagram of the moving block and the spoiler rod structure of a filtering device for the production of lithium battery electrolyte Figure 1 ;

[0028] Figure 12 Schematic diagram of the moving block and the spoiler rod structure of a filtering device for the production of lithium battery electrolyte Figure 2 ;

[0029] Figure 13 Schematic diagram of the rotating cylinder structure of a filtering device for the production of lithium battery electrolyte;

[0030] Figure 14 Schematic diagram of the elastic member structure of a filtering device for the production of lithium battery electrolyte;

[0031] Figure 15 Schematic diagram of the cross-sectional structure of the cylinder and the rotating cylinder of a filtering device for the production of lithium battery electrolyte;

[0032] Figure 16 Schematic diagram of the cross-sectional structure of the toothed ring of a filtering device for the production of lithium battery electrolyte;

[0033] In the figure: 1. Cylinder body; 2. Filter membrane; 3. Connecting pressure plate; 30. Handle; 4. Base plate; 40. Docking hole; 401. Straight section; 402. Arc section; 41. Ring rib rod; 42. Connecting rod; 44. Thread groove; 45. Connector; 5. Liquid extraction pipe; 50. Oblique cut; 6. Rotating cylinder; 61. Outer sleeve rod; 62. First inclined surface; 7. Spoiler rod; 71. Limiting plate; 72. Thrust rod; 8. Stop rod; 9. Moving block; 91. Resisting rod; 92. Side support rod; 93. Cleaning part; 94. Universal ball; 10. Cover plate; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. Motor; 14. First drain pipe; 15. Second drain pipe; 16. Movable pipe; 17. Skeleton plate; 170. Ring groove; 18. Wedge block; 19. Gear; 20. Elastic member; 21. Second inclined surface; 22. Transmission groove; 23. Toothed ring. Specific embodiments

[0034] The technical solutions of the present application will be further described in detail below in conjunction with specific embodiments.

[0035] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and should not be construed as a limitation of the present application.

[0036] Please refer to Figures 1 to 16, in one embodiment, a filtering device for lithium battery electrolyte production includes a cylinder body 1 and a filter membrane 2. The filter membrane 2 is installed inside the cylinder body 1. It further includes a base plate 4, a rotating cylinder 6 and a connecting pressing plate 3. One end of the cylinder body 1 is provided with a cover plate 10. An outlet pipe 12 is provided on the cover plate 10. An inlet pipe 11 is provided on the cylinder body 1. A second drain pipe 15 is provided between the inner wall of the cylinder body 1 and the rotating cylinder 6. The inlet pipe 11 is used for inletting electrolyte. The outlet pipe 12 is used for discharging the filtered electrolyte. The second drain pipe 15 is used for discharging waste liquid;

[0037] The filter membrane 2 is installed between the base plate 4 and the connecting pressing plate 3. A number of docking holes 40 are formed on the circumferential surface of the base plate 4. The docking holes 40 are composed of a straight section 401 and an arc section 402. The cylinder body 1 is conical. The cross-sectional diameter of the cylinder body 1 shows an increasing trend from bottom to top. The rotating cylinder 6 is rotatably installed at the bottom of the cylinder body 1. An outer sleeve rod 61 is fixedly installed on the rotating cylinder 6. A wedge block 18 is slidably installed inside the outer sleeve rod 61. An elastic member 20 is connected between the wedge block 18 and the outer sleeve rod 61. The elastic member 20 can be made of silicone, spring, etc. The moving direction of the wedge block 18 is perpendicular to the inserting direction of the base plate 4. A number of flow disturbing rods 7 are installed on the rotating cylinder 6;

[0038] A movable pipe 16 is movably installed on the connecting pressing plate 3. A liquid extraction pipe 5 is fixedly installed on the connecting pressing plate 3. One end of the movable pipe 16 is communicated with the liquid extraction pipe 5. The other end of the movable pipe 16 is communicated with the outlet pipe 12. The end of the liquid extraction pipe 5 away from the movable pipe 16 touches the upper surface of the base plate 4. The movable pipe 16 is rotatably connected with the liquid extraction pipe 5.

[0039] In this embodiment, the end of the liquid extraction pipe 5 in contact with the base plate 4 is provided with an inclined cut 50. A motor 13 is fixedly installed on the cylinder body 1. The output end of the motor 13 is fixedly installed with the rotating cylinder 6. A first drain pipe 14 is provided at the bottom position of the cylinder body 1 where the rotating cylinder 6 is located. The first drain pipe 14 is used for discharging excess cleaning liquid.

[0040] The filter membrane 2 is of a folded type. By setting the folded filter membrane 2, the filterable area of the electrolyte can be significantly increased, thereby further improving the filtering efficiency.

[0041] When installing the filter component, it can be carried out even when the cylinder body 1 is filled with electrolyte. First, roughly determine the central area according to the spoiler rod 7 extending out of the liquid surface, and then move the base plate 4, the filter membrane 2 and the connecting pressing plate 3 downward as a whole. When it touches the wedge-shaped block 18, it means encountering resistance, and then continue to move downward until the base plate 4, the filter membrane 2 and the connecting pressing plate 3 are moved to the bottom as a whole. At this time, the wedge-shaped block 18 contracts into the outer sleeve rod 61 and then rotates by a certain angle. When the base plate 4, the filter membrane 2 and the connecting pressing plate 3 as a whole are subjected to an impact force, at this time, the wedge-shaped block 18 is clamped into the straight section 401 of the docking hole 40, that is, the installation of the filter component is completed.

[0042] When replacing and disassembling the filter component, rotate the base plate 4, the filter membrane 2 and the connecting pressing plate 3 as a whole by a certain angle, so that the wedge-shaped block 18 moves to the outer peripheral surface of the base plate 4 through the arc section 402. At this time, move the base plate 4, the filter membrane 2 and the connecting pressing plate 3 upward as a whole, and the disassembly of the filter component can be completed. By arranging the liquid extraction pipe 5 of the filter component as a whole above the cylinder body 1, it is possible to replace and disassemble during the filtering process, and at the same time, liquid leakage can be avoided during the installation and disassembly process. Compared with the existing equipment that needs to drain the electrolyte in the cylinder body 1 before replacing the operation, the installation and disassembly operations of the present invention are more convenient.

[0043] When performing the filtering operation, rotate the rotating cylinder 6 and keep the filter component stationary. At this time, the electrolyte in the cylinder body 1 passes through the filter membrane 2 and enters the inside of the filter component, and then the electrolyte in the filter component can be extracted through the liquid extraction pipe 5, the movable pipe 16 and the liquid outlet pipe 12. After a period of filtering, impurity particles and other substances will be deposited on the filter membrane 2. At this time, start the motor 13, and drive the rotating cylinder 6 to rotate through the motor 13. When rotating, the wedge-shaped block 18 moves from the straight section 401 to the arc section 402, so that the wedge-shaped block 18 is in a state of being clamped with the docking hole 40 and contacting the outer peripheral surface of the base plate 4. At the moment when the wedge-shaped block 18 is clamped with the docking hole 40, it can produce a knocking effect on the base plate 4, the filter membrane 2 and the connecting pressing plate 3, so that the impurities deposited on the filter membrane 2 fall off, so that the impurities deposited on the filter membrane 2 can be preliminarily cleaned. During the knocking process, the moving block 9 moves downward.

[0044] Then, the rotating cylinder 6 is driven by the motor 13 to rotate in the reverse direction. Since the wedge-shaped block 18 is clamped with the base plate 4, when the rotating cylinder 6 rotates, the base plate 4, the spoiler rod 7, the filter membrane 2 and the connecting pressing plate 3 will rotate synchronously. During the rotation, under the action of centrifugal force, the impurities adsorbed on the filter membrane 2 can be further cleaned, thereby improving the filtration efficiency of the filter membrane 2. At the same time, under the action of centrifugal force, the impurities in the electrolyte in the cylinder 1 move to the inner wall of the cylinder 1. When the rotation stops, the impurities will fall to the bottom of the cylinder 1 under the action of the inclined wall surface of the conical cylinder 1.

[0045] Please refer to Figure 5 、 Figure 6 , in one embodiment, a plurality of connecting rods 42 are fixedly installed on the base plate 4. One end of the connecting rod 42 far from the base plate 4 is fixedly installed with a connecting head 45. A threaded groove 44 is formed on the outer peripheral surface of the connecting head 45. The connecting head 45 is threadedly connected with the connecting pressing plate 3 through the threaded groove 44. The filter membrane 2 is wrapped around the outer peripheral surface of the connecting rod 42.

[0046] In this embodiment, two handles 30 are fixedly installed on the connecting pressing plate 3. By providing the handles 30, it is convenient to hold the base plate 4, the filter membrane 2 and the connecting pressing plate 3 as a whole for installation and disassembly operations.

[0047] Please refer to Figure 5 、 Figure 6 , in one embodiment, a plurality of ring rib rods 41 are fixedly installed on a plurality of the connecting rods 42.

[0048] In this embodiment, by providing a plurality of ring rib rods 41, the connecting rods 42 can be supported, thereby forming a support skeleton for the filter membrane 2.

[0049] Installation of the filter assembly body: The ring rib rods 41, the connecting rods 42, the connecting heads 45 and the base plate 4 form a support skeleton for the filter membrane 2. The filter membrane 2 is sleeved around the ring rib rods 41 and the connecting rods 42. One end of the filter membrane 2 abuts against the base plate 4, and then the connecting pressing plate 3 is threadedly connected to the connecting head 45.

[0050] Disassembly of the filter assembly body: Rotate the connecting pressing plate 3 to separate it from the connecting head 45, take out the filter membrane 2, and install a new filter membrane 2.

[0051] Please refer to Figure 13 , in one embodiment, an annular first inclined surface 62 is fixedly installed between the rotating cylinder 6 and the base plate 4.

[0052] In this embodiment, the first inclined surface 62 inclines towards the rotating cylinder 6. After the base plate 4, the filter membrane 2 and the connecting pressing plate 3 are installed, one end of the first inclined surface 62 abuts against the base plate 4.

[0053] By providing a first inclined surface 62, the electrolyte between the rotating cylinder 6 and the filter assembly can be moved to the wall surface of the cylinder body 1 under the action of centrifugal force, preventing impurities from depositing between the rotating cylinder 6 and the filter assembly.

[0054] Please refer to Figure 9 、 Figure 14 In one embodiment, a number of spoiler rods 7 are rotatably mounted on the rotating cylinder 6. External threads are provided on the spoiler rods 7. A limiting plate 71 is fixedly mounted at one end of the spoiler rod 7 away from the rotating cylinder 6. The spoiler rod 7 is threadedly connected to a moving block 9. A cleaning member 93 is fixedly mounted at one end of the moving block 9. When the moving block 9 moves to the bottommost position, the cleaning member 93 is in contact with the bottom surface of the cylinder body 1. The spoiler rod 7 is in driving connection with the cylinder body 1.

[0055] In this embodiment, a side support rod 92 is fixedly connected to one end of the moving block 9, and a cleaning member 93 is fixedly mounted on the side support rod 92. The cleaning member 93 can be a brush or a scraping blade.

[0056] The positions of the spoiler rod 7 below the limiting plate 71 and above the rotating cylinder 6 are smooth rods. By providing smooth rods, the moving block 9 can stay at the position of the smooth rods.

[0057] During the filtering operation, the motor 13 is started, and the rotating cylinder 6 is driven to rotate by the motor 13. During rotation, the wedge block 18 moves from the straight section 401 to the arc section 402, so that the wedge block 18 is in a state of being clamped with the docking hole 40 and in contact with the outer peripheral surface of the base plate 4. At the moment when the wedge block 18 is clamped with the docking hole 40, it can produce a knocking effect on the base plate 4, the filter membrane 2, and the connecting pressing plate 3, causing the impurities deposited on the filter membrane 2 to fall off, thereby preliminarily cleaning the impurities deposited on the filter membrane 2. During the knocking process, the moving block 9 moves downward.

[0058] Then, the motor 13 drives the rotating cylinder 6 to rotate in the reverse direction. Since the wedge block 18 is clamped with the base plate 4, when the rotating cylinder 6 rotates, the base plate 4, the filter membrane 2, and the connecting pressing plate 3 will be driven to rotate synchronously. During this process, the moving block 9 moves upward until it stays at the smooth rod below the limiting plate 71. During rotation, under the action of centrifugal force, the impurities adsorbed on the filter membrane 2 can be further cleaned, thereby improving the filtering efficiency of the filter membrane 2. At the same time, under the action of centrifugal force, the impurities existing in the electrolyte in the cylinder body 1 move to the inner wall of the cylinder body 1. When the rotation stops, the impurities will fall to the bottom of the cylinder body 1 under the action of the inclined wall surface of the conical cylinder body 1.

[0059] When it is necessary to clean the cylinder body 1 after the filtration of the electrolyte is completed, the filter assembly is taken out, the cleaning liquid is introduced, the motor 13 is started, the rotating cylinder 6 is rotated, and the moving block 9 moves downward. When the moving block 9 moves to the polished rod above the rotating cylinder 6, the rotating cylinder 6 still rotates. At this time, the moving block 9 remains stationary. At this time, under the action of the rotation of the rotating cylinder 6, the cleaning member 93 fixedly installed on the moving block 9 can sweep the impurities at the bottom of the cylinder body 1 into the second drain pipe 15. During this process, the impurities at the center of the rotating cylinder 6 can move to the inner wall of the cylinder body 1 under the action of centrifugal force, and thus can further fall between the inner wall of the cylinder body 1 and the rotating cylinder 6. The first drain pipe 14 is used to drain the excess cleaning liquid.

[0060] Please refer to Figure 15 、 Figure 16 In one embodiment, a gear 19 is fixedly installed at one end of the spoiler rod 7 passing through the rotating cylinder 6. A transmission groove 22 is formed on the inner bottom surface of the cylinder body 1. The gear 19 is located in the transmission groove 22, and a toothed ring 23 is fixedly installed in the transmission groove 22. The toothed ring 23 is meshed with the gear 19.

[0061] In this embodiment, while the rotating cylinder 6 is driven to rotate by the motor 13, the gear 19 is meshed with the toothed ring 23 arranged on the bottom surface of the cylinder body 1, so as to drive the spoiler rod 7 to rotate. While rotating, the moving block 9 is driven to move on the spoiler rod 7.

[0062] Please refer to Figure 11 、 Figure 12 In one embodiment, a resisting rod 91 is fixedly installed at the other end of the moving block 9. A universal ball 94 is movably installed at one end of the resisting rod 91. The upper surface of the limiting rod is flush with the connecting pressing plate 3 after installation.

[0063] In this embodiment, by providing the resisting rod 91, during the installation of the filter assembly, the moving block 9 and the resisting rod 91 are moved above the liquid level, and the installation position of the filter assembly can be determined through the position of the resisting rod 91. At the same time, under the action of the universal ball 94, a guiding effect can be exerted on the installation of the filter assembly. Secondly, during the process of the rotating cylinder 6 driving the filter assembly to rotate, the position of the filter assembly can be fixed through the resisting rod 91, avoiding the deviation of the upper filter assembly.

[0064] When performing the filtering operation, the motor 13 is started, and the rotating cylinder 6 is driven to rotate by the motor 13. During the rotation, the wedge-shaped block 18 moves from the straight section 401 to the arc section 402, so that the wedge-shaped block 18 is in a state of being clamped with the docking hole 40 and contacting the outer peripheral surface of the base plate 4. At the moment when the wedge-shaped block 18 is clamped with the docking hole 40, a knocking effect can be exerted on the base plate 4, the filter membrane 2, and the connecting pressing plate 3.

[0065] Then, the rotating cylinder 6 is driven to rotate in the reverse direction by the motor 13. Since the wedge block 18 is clamped with the base plate 4, when the rotating cylinder 6 rotates, the base plate 4, the filter membrane 2, and the connecting pressing plate 3 will be driven to rotate synchronously. During this process, the moving block 9 moves upward until it stays at the position of the optical rod below the limiting plate 71. When the moving block 9 stays at the position of the optical rod below the limiting plate 71, it can press and fix the upper part of the filtering component through the pressing rod 91. During rotation, under the action of centrifugal force, the impurities adsorbed on the filter membrane 2 can be further cleaned, thereby improving the filtering efficiency of the filter membrane 2. At the same time, under the action of centrifugal force, the impurities existing in the electrolyte in the cylinder body 1 move to the inner wall of the cylinder body 1. When the rotation stops, the impurities will fall to the bottom of the cylinder body 1 under the action of the inclined wall surface of the conical cylinder body 1.

[0066] Please refer to Figure 3 、 Figure 8 , in one embodiment, a top rod 72 is fixedly installed on the limiting plate 71, a framework plate 17 is fixedly installed on the cylinder body 1, and an annular groove 170 is formed on the framework plate 17. The top rod 72 is located in the annular groove 170.

[0067] In this embodiment, during the rotation of the rotating cylinder 6, the top rod 72 is always located in the annular groove 170. By providing the framework plate 17, the stable rotation of the spoiler rod 7 can be maintained, and the spoiler rod 7 can be prevented from bending and deforming under the action of centrifugal force, thereby causing damage to the spoiler rod 7.

[0068] Please refer to Figure 15 、 Figure 16 , in one embodiment, a second inclined surface 21 is provided between the rotating cylinder 6 and the inner wall of the cylinder body 1. The second inclined surface 21 inclines towards the rotating cylinder 6. A second drain pipe 15 is also provided at the position between the inner wall of the cylinder body 1 and the second inclined surface 21 at the bottom of the cylinder body 1.

[0069] In this embodiment, the vertical section of the second inclined surface 21 is a right triangle. One right side is fixedly connected to the bottom surface of the cylinder body 1, and the other right side is rotatably connected to the outer peripheral surface of the rotating cylinder 6.

[0070] When the second inclined surface 21 is provided, the cleaning member 93 and the side support rod 92 are bent, corresponding to the shapes of the second inclined surface 21 and the bottom surface of the cylinder body 1.

[0071] When performing the filtering operation, start the motor 13. The motor 13 drives the rotating cylinder 6 to rotate. During the rotation, the wedge block 18 moves from the straight section 401 to the arc section 402, so that the wedge block 18 is in a state of being clamped with the docking hole 40 and the outer peripheral surface of the base plate 4 is in contact with the wedge block 18. At the moment when the wedge block 18 is clamped with the docking hole 40, it can produce a knocking effect on the base plate 4, the filter membrane 2, and the connecting pressing plate 3, causing the impurities deposited on the filter membrane 2 to fall off, so that the impurities deposited on the filter membrane 2 can be preliminarily cleaned. During the knocking process, the moving block 9 moves downward.

[0072] Then, the motor 13 drives the rotating cylinder 6 to rotate in the reverse direction. Because the wedge block 18 is clamped with the base plate 4, when the rotating cylinder 6 rotates at this time, it will drive the base plate 4, the filter membrane 2, and the connecting pressing plate 3 to rotate synchronously. During this process, the moving block 9 moves upward until it stays at the optical rod below the limiting plate 71. During the rotation, under the action of centrifugal force, the impurities adsorbed on the filter membrane 2 can be further cleaned, so as to improve the filtering efficiency of the filter membrane 2. At the same time, under the action of centrifugal force, the impurities existing in the electrolyte in the cylinder body 1 move to the inner wall of the cylinder body 1. When the rotation stops, the impurities will fall between the second inclined surface 21 and the inner wall of the cylinder body 1 under the action of the inclined wall surface of the conical cylinder body 1, so that the impurities can be separated from the electrolyte, avoiding excessive adsorption of impurities on the filter membrane 2 and affecting the filtering efficiency.

[0073] When it is necessary to clean the cylinder body 1 after the filtration of the electrolyte is completed, take out the filter assembly, introduce the cleaning liquid, start the motor 13, and make the rotating cylinder 6 rotate, so that the moving block 9 moves downward. When the moving block 9 moves to the optical rod above the rotating cylinder 6, the rotating cylinder 6 still rotates. At this time, the moving block 9 remains stationary. At this time, under the rotation of the rotating cylinder 6, the cleaning part 93 fixedly installed on the moving block 9 can sweep the impurities at the position between the inner wall of the cylinder body 1 and the rotating cylinder 6 into the second drain pipe 15. During this process, the impurities at the center of the rotating cylinder 6 can move to the inner wall of the cylinder body 1 under the action of centrifugal force, so as to further fall between the inner wall of the cylinder body 1 and the rotating cylinder 6.

[0074] Please refer to Figure 9 、 Figure 13 In one embodiment, blocking rods 8 are fixedly installed on both sides of the moving block 9 on the rotating cylinder 6.

[0075] In this embodiment, blocking rods 8 are fixedly installed on both sides of the moving block 9. By providing the blocking rods 8, the moving direction of the moving block 9 can be limited to prevent the moving block 9 from rotating synchronously with the spoiler rod 7.

[0076] Working process of the present invention: During the filtering operation, the rotating cylinder 6 and the filtering component remain stationary. At this time, the electrolyte in the cylinder body 1 passes through the filter membrane 2 and enters the interior of the filtering component, and then the electrolyte in the filtering component can be extracted through the liquid extraction pipe 5, the movable pipe 16 and the liquid outlet pipe 12. After a period of filtration, particulate matters such as impurities will be deposited on the filter membrane 2. At this time, start the motor 13, and drive the rotating cylinder 6 to rotate through the motor 13. When rotating, the wedge block 18 moves from the straight section 401 to the arc section 402, so that the wedge block 18 is in a state of being clamped with the docking hole 40 and contacting the outer peripheral surface of the base plate 4. At the moment when the wedge block 18 is clamped with the docking hole 40, it can produce a knocking effect on the base plate 4, the filter membrane 2 and the connecting pressing plate 3, so that the impurities deposited on the filter membrane 2 fall off, thereby being able to initially clean the impurities deposited on the filter membrane 2. During the knocking process, the moving block 9 moves downward.

[0077] Then drive the rotating cylinder 6 to rotate in the reverse direction through the motor 13. Because the wedge block 18 is clamped with the base plate 4, at this time, when the rotating cylinder 6 rotates, it will drive the base plate 4, the filter membrane 2 and the connecting pressing plate 3 to rotate synchronously. During this process, the moving block 9 moves upward until it stays at the smooth rod below the limiting plate 71. When rotating, under the action of centrifugal force, the impurities adsorbed on the filter membrane 2 can be further cleaned, thereby being able to improve the filtering efficiency of the filter membrane 2. At the same time, under the action of centrifugal force, the impurities existing in the electrolyte in the cylinder body 1 move to the inner wall of the cylinder body 1. When the rotation stops, the impurities will fall between the second inclined surface 21 and the inner wall of the cylinder body 1 under the action of the inclined wall surface of the conical cylinder body 1, thereby being able to separate the impurities from the electrolyte and prevent the filter membrane 2 from being adsorbed by too many impurities and affecting the filtering efficiency.

[0078] When it is necessary to clean the cylinder body 1 after completing the filtering of the electrolyte, take out the filtering component, introduce the cleaning liquid, start the motor 13 to make the rotating cylinder 6 rotate, and make the moving block 9 move downward. When the moving block 9 moves to the smooth rod above the rotating cylinder 6, the rotating cylinder 6 still keeps rotating. At this time, the moving block 9 remains stationary. At this time, under the rotating action of the rotating cylinder 6, the cleaning part 93 fixedly installed on the moving block 9 can sweep the impurities at the position between the inner wall of the cylinder body 1 and the rotating cylinder 6 into the second drain pipe 15. During this process, the impurities at the center of the rotating cylinder 6 can move to the inner wall of the cylinder body 1 under the action of centrifugal force, so as to further fall between the inner wall of the cylinder body 1 and the rotating cylinder 6. The first drain pipe 14 is used to drain the excess cleaning liquid.

[0079] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0080] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filtering device for the production of lithium battery electrolyte, comprising a cylinder body (1) and a filter membrane (2), wherein the filter membrane (2) is installed inside the cylinder body (1), and is characterized in that, It further includes a base plate (4), a rotating cylinder (6) and a connecting pressing plate (3). One end of the cylinder body (1) is provided with a cover plate (10). An outlet pipe (12) is arranged on the cover plate (10). An inlet pipe (11) is arranged on the cylinder body (1). A second drain pipe (15) is arranged between the inner wall of the cylinder body (1) and the rotating cylinder (6). The inlet pipe (11) is used for introducing electrolyte. The outlet pipe (12) is used for discharging the filtered electrolyte. The second drain pipe (15) is used for discharging waste liquid. The filter membrane (2) is installed between the base plate (4) and the connecting pressing plate (3). A number of docking holes (40) are formed on the circumferential surface of the base plate (4). The docking holes (40) are composed of a straight section (401) and an arc section (402). The cylinder body (1) is conical, and the cross-sectional diameter of the cylinder body (1) shows an increasing trend from bottom to top. The rotating cylinder (6) is rotatably installed at the bottom of the cylinder body (1). An outer sleeve rod (61) is fixedly installed on the rotating cylinder (6). A wedge block (18) is slidably installed in the outer sleeve rod (61). An elastic member (20) is connected between the wedge block (18) and the outer sleeve rod (61). The moving direction of the wedge block (18) is perpendicular to the inserting direction of the base plate (4). A number of flow disturbing rods (7) are installed on the rotating cylinder (6). A movable pipe (16) is movably installed on the connecting pressing plate (3). A liquid suction pipe (5) is fixedly installed on the connecting pressing plate (3). One end of the movable pipe (16) is communicated with the liquid suction pipe (5). The other end of the movable pipe (16) is communicated with the outlet pipe (12). The end of the liquid suction pipe (5) away from the movable pipe (16) touches the upper surface of the base plate (4).

2. The filtering device for the production of lithium battery electrolyte according to claim 1, characterized in that, A number of connecting rods (42) are fixedly installed on the base plate (4). A connecting head (45) is fixedly installed at the end of the connecting rod (42) away from the base plate (4). A thread groove (44) is formed on the outer circumferential surface of the connecting head (45). The connecting head (45) is threadedly connected with the connecting pressing plate (3) through the thread groove (44). The filter membrane (2) is wrapped around the outer circumferential surface of the connecting rod (42).

3. A filtering device for the production of lithium battery electrolytes according to claim 2, characterized in that, A number of ring rib rods (41) are fixedly installed on the a number of connecting rods (42).

4. A filtering device for the production of lithium battery electrolytes according to claim 1, characterized in that, An annular first inclined surface (62) is fixedly installed between the rotating cylinder (6) and the base plate (4).

5. A filtering device for the production of lithium battery electrolytes according to claim 1, characterized in that, A number of flow disturbing rods (7) are rotatably installed on the rotating cylinder (6). External threads are arranged on the flow disturbing rods (7). A limiting plate (71) is fixedly installed at the end of the flow disturbing rod (7) away from the rotating cylinder (6). A moving block (9) is threadedly connected to the flow disturbing rod (7). A cleaning member (93) is fixedly installed at one end of the moving block (9). When the moving block (9) moves to the bottommost position, the cleaning member (93) is in contact with the bottom surface of the cylinder body (1). The flow disturbing rod (7) is in transmission connection with the cylinder body (1).

6. The filtering device for the production of lithium battery electrolyte according to claim 5, wherein, A gear (19) is fixedly installed at one end of the spoiler rod (7) passing through the rotating cylinder (6). A transmission groove (22) is formed on the inner bottom surface of the cylinder body (1). The gear (19) is located in the transmission groove (22). A toothed ring (23) is fixedly installed in the transmission groove (22). The toothed ring (23) is meshed with the gear (19).

7. A filtering device for the production of lithium battery electrolytes according to claim 5 or 6, characterized in that, A push rod (91) is fixedly installed at the other end of the moving block (9). A universal ball (94) is movably installed at one end of the push rod (91). The upper surface of the limiting rod is flush with the installed connecting pressing plate (3).

8. A filtering device for the production of a lithium battery electrolyte according to claim 7, characterized in that, A push rod (72) is fixedly installed on the limiting plate (71). A skeleton plate (17) is fixedly installed on the cylinder body (1). An annular groove (170) is formed on the skeleton plate (17). The push rod (72) is located in the annular groove (170).

9. A filtering device for the production of a lithium battery electrolyte according to claim 7, characterized in that, A second inclined surface (21) is arranged between the rotating cylinder (6) and the inner wall of the cylinder body (1). The second inclined surface (21) inclines towards the rotating cylinder (6). A second drain pipe (15) is further arranged at the position between the inner wall of the cylinder body (1) and the second inclined surface (21) at the bottom of the cylinder body (1).

10. A filtering device for the production of lithium battery electrolytes according to claim 7, characterized in that, Blocking rods (8) are fixedly installed on both sides of the moving block (9) on the rotating cylinder (6).

Images