A lithium-rich manganese ternary material precursor washing device

Abstract

The present application relates to a kind of lithium-rich manganese ternary material precursor washing device, comprising: centrifugal cylinder, including rotating sleeve that is installed in the filter inner cylinder of support outer cylinder;Breaking mechanism, including a plurality of can be inside and outside movement and be inserted in filter hole Installation breaking rod piece, breaking rod piece staggered and interval distribution, breaking rod piece and the outside wall of filter inner cylinder between setting elastic element, elastic element has the movement tendency of driving breaking rod piece outside reset;Drive vibration mechanism, including corresponding breaking rod piece setting and inside and outside movement and be installed on the support outer cylinder ultrasonic transducer;Through corresponding drive mechanism drive ultrasonic transducer intermittent inside, to move breaking rod piece intermittently to push and vibrate inside the filter cake adhered to fall off.The present application drives breaking mechanism action by drive vibration mechanism to break the adhesion of filter cake, again by drive vibration mechanism vibration to break the stress of filter cake to produce crack, and cooperate with gravity and the rotation of filter inner cylinder promote filter cake to be quickly removed, further improve the efficiency of filter cake removal.

Description

Technical Field

[0001] This invention relates to the field of precursor preparation technology, specifically to a washing device for lithium-rich manganese ternary material precursors, particularly for centrifugal dehydration after water washing during the washing process of lithium-rich manganese ternary material precursors. Background Technology

[0002] Lithium-rich manganese ternary precursor products are typically prepared using a batch process. This involves continuously adding a solution to the reactor during the material reaction and growth process until the reactor volume is exceeded. Then, a concentrator is used to concentrate the solution and continue the reaction until the material grows to the target particle size range and the reaction stops. Finally, the ternary precursor product with the target physical properties and a narrow particle size distribution is obtained through centrifugation, washing, drying, and other processes.

[0003] The washing process for lithium-rich manganese ternary precursor products involves two steps: water washing and centrifugal dehydration, requiring separate treatment by a washing machine and a centrifuge. However, traditional centrifuges consist of inner and outer cylinders. The inner cylinder has evenly distributed liquid-permeable holes. High-speed rotation of the inner cylinder separates water and materials, causing the materials to adhere to the inner cylinder sidewall, forming a filter cake. A scraper on the top cover then moves towards and adheres to the inner cylinder sidewall after centrifugal dehydration, allowing the inner cylinder to rotate and scrape off the filter cake. However, the scraper not only disrupts the rotational pattern of the materials during centrifugation, affecting the separation efficiency, but also causes the precursor materials to become excessively magnetic due to friction between the scraper and the inner cylinder wall. Furthermore, lithium-rich manganese ternary precursors have a manganese content of 0.6-0.8%, which is easily oxidized in high-temperature air, leading to agglomeration and peeling of the spheres. These phenomena severely impact battery performance and safety.

[0004] Therefore, the research objective of this invention is to design a lithium-rich manganese ternary material precursor washing device that, without affecting the centrifugal dewatering process, can use a staggered crushing mechanism and a vibration driving mechanism to work together to break the filter cake adhering to the inner cylinder side wall and vibrate it off to quickly separate the filter cake, and effectively avoid the problem of excessive magnetic properties during the scraping process. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a washing device for lithium-rich manganese ternary material precursors, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is:

[0007] A washing device for lithium-rich manganese ternary material precursors, comprising:

[0008] A centrifuge cylinder includes a filter inner cylinder that is rotatably fitted inside a supporting outer cylinder. The surface of the filter inner cylinder is evenly distributed with a number of filter holes penetrating its sidewalls. An electric motor for driving the filter inner cylinder to rotate is fixedly installed on the supporting outer cylinder.

[0009] The rubbing mechanism includes multiple rubbing rods that can be moved inward and outward and inserted into the corresponding filter holes. The rubbing rods are staggered and spaced apart, and their inner ends extend to be flush with the inner side wall of the filter inner cylinder. A corresponding elastic element is provided between the rubbing rod and the outer side wall of the filter inner cylinder. The elastic element has a tendency to drive the rubbing rod to move outward and reset.

[0010] The vibration driving mechanism includes an ultrasonic transducer that is movable inside and outside the outer support cylinder and electrically connected to an external ultrasonic generator. The ultrasonic transducer is driven to move inward intermittently through a corresponding driving mechanism, thereby intermittently moving the crushing rod inward to push the filter cake adhering to the cylinder wall of the inner filter cylinder inward and causing it to vibrate and fall off.

[0011] The outer wall of the filter inner cylinder is fixedly installed with corresponding positioning components. The rubbing rods are respectively inserted through the positioning components and the filter inner cylinder. The inner end of the rubbing rod is set in a pointed cone shape, and its outer end is fixedly connected to a connecting component that is set in a hemispherical shape. The elastic component is sleeved on the outside of the rubbing rod, and its two ends are respectively fixed on the positioning component and the connecting component.

[0012] The washing device further includes a limiting mechanism for fixing the intermittently inwardly moving abrasive rod and an unlocking mechanism for unlocking the limiting mechanism from fixing the abrasive rod. The abrasive rod has multiple inwardly recessed mounting holes spaced apart on its outer axial diameter. The limiting mechanism includes a limiting rod that is inserted into the positioning member and adapted to the mounting holes. A corresponding iron limiting block is fixed to the outer end of the limiting rod. A corresponding return spring is sleeved on the outer side of the limiting rod. The two ends of the return spring are respectively fixed to the positioning member and the iron limiting block. The return spring has a tendency to move the limiting rod and lock it into the mounting hole to fix the abrasive rod.

[0013] The mounting holes are distributed on the bottom outer side of the rubbing rod. The unlocking mechanism includes waterproof electromagnets that are spaced vertically below the rubbing rod and spaced relative to the limiting rod. The waterproof electromagnets are fixed by corresponding brackets and connected to an external power source through corresponding wires.

[0014] The ultrasonic transducer is embedded in the inner side wall of the moving plate. The vibration driving mechanism includes multiple drive rods fixed to the outer side wall of the moving plate. The drive rods are installed on the supporting outer cylinder by interference fit of corresponding sealing gaskets and inner and outer pull sealing. The drive rods extend outward and are connected to the piston rod end of the driving cylinder through corresponding connecting plates.

[0015] The vibration driving mechanism includes several coaxially annularly distributed driving components on the inner sidewall of the supporting outer cylinder. One end of each driving component is hinged to the supporting outer cylinder, and the other end is connected to a driving rod. The width of each driving component gradually increases from the hinge point with the supporting outer cylinder to the other end, with the narrower end being the hinge portion and the wider end being the moving portion. The driving rod is installed on the supporting outer cylinder through an interference fit and internal / external pull-sealing with corresponding sealing gaskets. The driving rod extends outward to the piston rod end of the driving cylinder. The hinge point between the driving component and the supporting outer cylinder is located on the outside of the connecting member. The ultrasonic transducer is installed on the inner sidewall of the driving component and extends from the hinge portion to the moving portion of the driving component.

[0016] When the drive rod is not extended, the inner walls of the hinge and moving part of the drive member are spaced apart from the rubbing rod. When the drive rod is extended to the position, the rubbing rod is moved inward to the position by pushing the moving part of the drive member (404). When the filter inner cylinder rotates at low speed and drives the rubbing mechanism to rotate, the rubbing rod intermittently contacts the drive member and gradually extends inward as the width of the drive member gradually increases.

[0017] The outer side of the drive component is recessed inward and has a corresponding guide groove, and the front part of the drive rod is slidably connected and embedded in the guide groove.

[0018] The top of the supporting outer cylinder is equipped with a corresponding closable and sealable cover. The closable cover is equipped with an inlet pipe connected to the liquid outlet pipe of the external washing drum and an air inlet pipe connected to the external nitrogen source. The air inlet pipe is located at the center of the centrifuge cylinder closable cover. The bottom side wall of the supporting outer cylinder is connected to an outlet pipe and an exhaust pipe through corresponding valves. The motor is installed at the bottom of the supporting outer cylinder, and its output shaft extends upward through a corresponding frequency converter and connects to the filter inner cylinder.

[0019] Both sides of the outer support cylinder are rotatably mounted on the support frame via corresponding bearings, and are driven by a corresponding second motor to tilt and unload the material.

[0020] Advantages of this invention:

[0021] 1) This invention eliminates and optimizes the scraper in traditional centrifugal dewatering equipment, and adds a rubbing and vibration mechanism that works together. After high-speed centrifugal dewatering, the piston rod of the driving cylinder extends and moves the moving plate towards the inner filter cylinder. The rubbing rods, which are arranged in an alternating manner, rub the filter cake from multiple different directions, thereby causing cracks in the dense filter cake and destroying the adhesion and stress between the filter cake and the inner filter cylinder. Then, the ultrasonic vibration generated by the ultrasonic transducer is used to break the filter cake through the rubbing rods, making the filter cake full of cracks. The rubbing rods advance intermittently, and the ultrasonic transducer gradually increases in size according to the movement of the rubbing rods, so that the filter cake is gradually broken and falls to the bottom of the inner filter cylinder under the action of gravity. During this process, the ultrasonic transducer can be moved back and the inner filter cylinder can be rotated at a low speed to promote the material falling. Throughout the centrifugation process, the inner end of the crushing rod of the crushing mechanism is embedded in the filter hole, which will not affect the centrifugal rotation and dewatering. After centrifugation and dewatering, the filter cake is gradually pushed inward to peel off, effectively solving the problems of excessive magnetic field and inhibition of material rotation caused by traditional scrapers. This invention uses a vibration drive mechanism to drive the crushing mechanism to break the adhesion of the filter cake, and then uses the vibration drive mechanism to break the stress of the filter cake to create cracks. Combined with gravity and the rotation of the filter inner cylinder, the filter cake is quickly removed, further improving the efficiency of filter cake removal.

[0022] 2) The crushing rod is intermittently fixed by a limiting mechanism. An insert hole is provided at its bottom. When the crushing rod is pushed inward, the limiting rod inserts into the insert hole to fix the crushing rod. This allows the moving plate to move outward and rotate the filter inner cylinder at a low speed, facilitating material drop and improving material separation. Once the material has completely dropped, the waterproof electromagnet of the unlocking mechanism is energized, and the filter inner cylinder rotates at a low speed. This causes the limiting mechanism to attract the iron limiting block via the waterproof electromagnet. After the crushing rod is released from the limiting rod, it resets under the action of the elastic element. The limiting mechanism and the insert hole are located at the bottom of the crushing rod, effectively preventing material from getting stuck in the insert hole when the crushing rod is pushed inward, thus ensuring the practical effect of this invention.

[0023] 3) The vibration driving mechanism of the present invention can be configured as a driving member coaxially and annularly distributed on the inner side wall of the supporting outer cylinder. One end of the driving member is hinged to the supporting outer cylinder, and the other end is connected to the driving rod. Its width gradually increases from the hinge point with the supporting outer cylinder to the other end. When the filter inner cylinder rotates at low speed, driving the crushing mechanism to rotate, the crushing rod intermittently contacts the driving member and gradually extends inward as the width of the driving member gradually increases. After the crushing rod rotates past the moving part of the driving member, it resets and moves outward under the action of the elastic member. After continuing to rotate and contacting the hinge part of the next driving member, it gradually moves inward to crush. The repeated action forms vibration, and in conjunction with ultrasonic vibration, it promotes the rapid removal of filter cake and improves the removal efficiency of filter cake.

[0024] 4) The manganese content in the lithium-rich manganese ternary precursor is 0.6-0.8%, and manganese is easily oxidized in high-temperature air, leading to material agglomeration and peeling of the sphere surface. The peeling of the precursor sphere surface is prone to falling off during the subsequent sintering, which seriously affects battery performance and safety. The washing water temperature is generally above 60℃, which easily leads to oxidation problems. Therefore, this invention, without affecting the distribution of materials in the centrifuge and facilitating subsequent centrifugal dehydration, further adds a corresponding nitrogen inlet at the center of the sealed centrifuge and sets a corresponding air outlet on the outer support cylinder. This achieves nitrogen protection measures to remove air from the washing water, effectively preventing materials from contacting air and solving the problems of material agglomeration, difficulty in sieving, excessive magnetic properties after sieving, and peeling of the sphere surface. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a cross-sectional diagram of a centrifuge cylinder.

[0027] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0028] Figure 4 for Figure 3 A schematic diagram showing the state of the broken rod as it moves inward.

[0029] Figure 5 This is a schematic diagram showing the installation of the filter inner cylinder, the crushing mechanism, and the unlocking mechanism.

[0030] Figure 6 This is a schematic diagram of the installation of the vibration driving mechanism in Example 2.

[0031] Figure 7 for Figure 6 An enlarged schematic diagram of section B.

[0032] In the attached diagram: centrifuge cylinder 1, outer support cylinder 101, inner filter cylinder 102, motor 103, crushing mechanism 2, crushing rod 201, mounting hole 2011, elastic element 202, positioning element 203, connecting element 204, vibration driving mechanism 3, ultrasonic transducer 301, moving plate 302, driving mechanism 4, driving rod 401, connecting plate 402, driving cylinder 403, driving element 404, guide groove 4041, limiting mechanism 5, limiting rod 501, reset spring 502, iron limiting block 503, unlocking mechanism 6, waterproof electromagnet 601, bracket 602, closing cover 7, liquid inlet pipe 8, air inlet pipe 9, liquid outlet pipe 10, support frame 11, second motor 12, exhaust pipe 13. Detailed Implementation

[0033] To facilitate understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings:

[0034] Example 1

[0035] refer to Figure 1-5 A washing device for lithium-rich manganese ternary material precursors, comprising:

[0036] Centrifuge cylinder 1 includes a filter inner cylinder 102 rotatably mounted inside a supporting outer cylinder 101. The surface of the filter inner cylinder 102 is evenly distributed with a plurality of filter holes penetrating its sidewalls. An electric motor 103 for driving the filter inner cylinder 102 to rotate is fixedly installed on the supporting outer cylinder 101.

[0037] The rubbing mechanism 2 includes a plurality of rubbing rods 201 that can be moved inward and outward and inserted into the corresponding filter holes. The rubbing rods 201 are staggered and spaced apart, and their inner ends extend to be flush with the inner side wall of the filter inner cylinder 102. A corresponding elastic element 202 is provided between the rubbing rods 201 and the outer side wall of the filter inner cylinder 102. The elastic element 202 has a tendency to drive the rubbing rods 201 to move outward and reset.

[0038] The vibration driving mechanism 3 includes an ultrasonic transducer 301 that is movable inside and outside on the outer support cylinder 101. The ultrasonic transducer 301 is electrically connected to an external ultrasonic generator. The ultrasonic transducer 301 is driven to move inward intermittently by a corresponding driving mechanism 4, thereby intermittently moving the crushing rod 201 inward to push the filter cake adhering to the cylinder wall of the inner filter cylinder 102 inward and cause it to vibrate and fall off.

[0039] This invention eliminates and optimizes the scraper in traditional centrifugal dewatering equipment, adding a crushing mechanism 2 and a vibration driving mechanism 3 that work together. After high-speed centrifugal dewatering, the piston rod of the driving cylinder 403 extends and moves the moving plate towards the filter inner cylinder 102. The staggered crushing rods 201 crush the filter cake from multiple different directions, causing cracks in the tightly packed filter cake and breaking the adhesion and stress between the filter cake and the filter inner cylinder 102. Then, the ultrasonic vibration generated by the ultrasonic transducer 301 is used to break the filter cake through the crushing rods 201, filling the filter cake with many cracks. The crushing rods 201 advance intermittently, and the ultrasonic transducer 301 gradually increases in size according to the movement of the crushing rods 201, causing the filter cake to gradually break and fall to the bottom of the filter inner cylinder 102 under the action of gravity. During this process, the ultrasonic transducer 301 can be moved backward and the filter inner cylinder 102 can be rotated at a low speed to promote the material falling. Throughout the centrifugation process, the inner end of the crushing rod 201 of the crushing mechanism 2 is embedded in the filter hole, which will not affect the centrifugal rotation and dewatering. After centrifugation and dewatering, it is gradually pushed inward to peel off the filter cake, effectively solving the problems of excessive magnetic field and inhibition of material rotation caused by traditional scrapers. The present invention drives the crushing mechanism 2 to break the adhesion of the filter cake by driving the vibration mechanism 3, and then the vibration mechanism 3 breaks the stress of the filter cake to create cracks. Combined with gravity and the rotation of the inner filter cylinder 102, the filter cake is quickly removed, further improving the efficiency of filter cake removal.

[0040] A corresponding positioning element 203 is fixedly installed on the outer wall of the filter inner cylinder 102. The rubbing rod 201 is inserted through the positioning element 203 and the filter inner cylinder 102 respectively. The inner end of the rubbing rod 201 is set in a pointed cone shape, and its outer end is fixedly connected to a connecting element 204 that is set in a hemispherical shape. The elastic element 202 is sleeved on the outside of the rubbing rod 201 and its two ends are fixed on the positioning element 203 and the connecting element 204 respectively.

[0041] The crushing rod 201 is intermittently fixed by the limiting mechanism 5. With an insert hole 2011 at its bottom, when the crushing rod 201 is pushed inward, the limiting rod 501 inserts into the insert hole 2011 to fix the crushing rod 201. This allows the moving plate to move outward and rotate the filter inner cylinder 102 at low speed, facilitating material drop and improving material separation. Once the material has completely dropped, the waterproof electromagnet 601 of the unlocking mechanism 6 is energized, and the filter inner cylinder 102 rotates at low speed. This causes the limiting mechanism 5 to attract the iron limiting block 503 via the waterproof electromagnet 601. After the crushing rod 201 is released from the limiting rod 501, it resets under the action of the elastic element 202. The limiting mechanism 5 and the insert hole 2011 are located at the bottom of the crushing rod 201, effectively preventing material from getting stuck in the insert hole 2011 when the crushing rod 201 is pushed inward, thus ensuring the practical effect of the invention.

[0042] The washing device further includes a limiting mechanism 5 for fixing the intermittently inwardly moving abrasive rod 201 and an unlocking mechanism 6 for unlocking the limiting mechanism 5 from fixing the abrasive rod 201; the outer axial diameter of the abrasive rod 201 is provided with a plurality of inwardly recessed fitting holes 2011; the limiting mechanism 5 includes a limiting rod 501 that is inserted into the positioning member 203 and adapted to the fitting holes 2011; the outer end of the limiting rod 501 is fixedly connected to a corresponding iron limiting block 503; a corresponding return spring 502 is sleeved on the outer side of the limiting rod 501; the two ends of the return spring 502 are respectively fixed to the positioning member 203 and the iron limiting block 503; the return spring 502 has a tendency to drive the limiting rod 501 to move and lock into the fitting hole 2011 to fix the abrasive rod 201.

[0043] The mounting holes 2011 are distributed on the bottom outer side of the rubbing rod 201. The unlocking mechanism 6 includes a waterproof electromagnet 601 that is spaced vertically below the rubbing rod 201 and spaced relative to the limiting rod 501. The waterproof electromagnet 601 is fixed by a corresponding bracket 602 and connected to an external power source by a corresponding wire.

[0044] The ultrasonic transducer 301 is embedded in the inner side wall of the movable plate 302. The vibration driving mechanism 3 includes a plurality of drive rods 401 fixed to the outer side wall of the movable plate 302. The drive rods 401 are installed on the supporting outer cylinder 101 by interference fit of corresponding sealing gaskets and inner and outer pull sealing. The drive rods 401 extend outward and are connected to the piston rod end of the drive cylinder 403 through corresponding connecting plates 402.

[0045] The top of the supporting outer cylinder 101 is equipped with a corresponding closure cover 7 that can be opened and closed. The closure cover 7 is provided with an inlet pipe 8 connected to the liquid outlet pipe of the external washing drum and an air inlet pipe 9 connected to the external nitrogen source. The air inlet pipe 9 is located at the center of the closure cover 7. The bottom side wall of the supporting outer cylinder 101 is connected to an outlet pipe 10 and an exhaust pipe 13 through a corresponding valve. The motor 103 is installed at the bottom of the supporting outer cylinder 101, and its output shaft extends upward through a corresponding frequency converter and is connected to the filter inner cylinder 102.

[0046] The manganese content in the lithium-rich manganese ternary precursor is 0.6-0.8%, and manganese is easily oxidized in high-temperature air, leading to material agglomeration and peeling of the sphere surface. The peeling of the precursor sphere surface is prone to falling off during the subsequent sintering, which seriously affects battery performance and safety. The washing water temperature is generally above 60℃, which easily leads to oxidation problems. Therefore, this invention, without affecting the distribution of materials in the centrifuge tube 1 and facilitating subsequent centrifugal dehydration, further adds a corresponding nitrogen inlet at the center of the sealed centrifuge tube 1, and sets a corresponding air outlet on the supporting outer cylinder 101. This achieves nitrogen protection measures to remove air from the washing water, effectively preventing materials from contacting air, and solving the problems of material agglomeration and difficulty in sieving, excessive magnetic properties after sieving, and peeling of the sphere surface.

[0047] Both sides of the outer support cylinder 101 are rotatably mounted on the support frame 11 via corresponding bearings, and are driven to flip and unload by a corresponding second motor 12.

[0048] Example 2

[0049] refer to Figure 6-7 The difference between this embodiment and Embodiment 1 is that: the vibration driving mechanism 3 includes several coaxially annularly distributed driving members 404 on the inner sidewall of the supporting outer cylinder 101. One end of the driving member 404 is hinged to the supporting outer cylinder 101, and the other end is connected to the driving rod 401. The width of the driving member 404 gradually increases from the hinge point with the supporting outer cylinder 101 to the other end, with the narrower end being the hinge part and the wider end being the moving part. The driving rod 401 is installed on the supporting outer cylinder 101 by interference fit and internal and external pull sealing through corresponding sealing gaskets. The driving rod 401 extends outward to the piston rod end of the driving cylinder 403. The hinge point between the driving member 404 and the supporting outer cylinder 101 is located on the outside of the connecting member 204. The ultrasonic transducer 301 is installed on the inner sidewall of the driving member 404 and extends from the hinge part of the driving member 404 to its moving part.

[0050] When the drive rod 401 is not extended, the inner walls of the hinge and moving part of the drive member 404 are spaced apart from the rubbing rod 201; when the drive rod 401 is extended to the position, the rubbing rod 201 is moved inward to the position by pushing the moving part of the drive member 404; when the filter inner cylinder 102 rotates at low speed and drives the rubbing mechanism 2 to rotate, the rubbing rod 201 intermittently contacts the drive member 404, and gradually extends inward as the width of the drive member 404 gradually increases.

[0051] The outer side of the driving component 404 is recessed inward and has a corresponding guide groove 4041. The front part of the driving rod 401 is slidably connected and embedded in the guide groove.

[0052] The vibration driving mechanism 3 of the present invention can be configured as a driving member 404 coaxially and annularly distributed on the inner side wall of the supporting outer cylinder 101. One end of the driving member 404 is hinged to the supporting outer cylinder 101, and the other end is connected to the driving rod 401. Its width gradually increases from the hinge point with the supporting outer cylinder 101 to the other end. When the filter inner cylinder 102 rotates at low speed and drives the crushing mechanism 2 to rotate, the crushing rod 201 intermittently contacts the driving member 404 and gradually extends inward as the width of the driving member 404 gradually increases. After the crushing rod 201 rotates past the moving part of the driving member 404, it resets and moves outward under the action of the elastic member 202. After continuing to rotate and contact the hinge part of the next driving member 404, it gradually moves inward to crush. The repeated action forms vibration, and in conjunction with ultrasonic vibration, it promotes the rapid removal of filter cake and improves the removal efficiency of filter cake.

[0053] It should be noted that this embodiment is implemented in the same way as embodiment one in terms of principle and technical effect. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in embodiment one.

[0054] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A lithium-rich manganese ternary material precursor washing device, characterized in that, The application relates to a centrifugal washing device, which comprises the following components: a centrifugal cylinder (1) comprising a filtering inner cylinder (102) sleeved in a supporting outer cylinder (101), the surface of the filtering inner cylinder (102) is uniformly provided with a plurality of filtering holes penetrating through the side wall, and the supporting outer cylinder (101) is fixedly provided with a motor (103) for driving the filtering inner cylinder (102) to rotate; a rubbing mechanism (2) comprising a plurality of rubbing rod members (201) movably inserted into corresponding filtering holes, the rubbing rod members (201) are staggered and spaced, the inner ends of the rubbing rod members (201) extend to the inner side wall of the filtering inner cylinder (102), elastic members (202) are arranged between the rubbing rod members (201) and the outer side wall of the filtering inner cylinder (102), and the elastic members (202) have a movement tendency of driving the rubbing rod members (201) to move outward and reset; a vibration mechanism (3) comprising an ultrasonic transducer (301) movably arranged on the supporting outer cylinder (101), the ultrasonic transducer (301) is electrically connected to an ultrasonic generator; the ultrasonic transducer (301) is driven by a corresponding driving mechanism (4) to move inward intermittently, so that the rubbing rod members (201) are moved inward intermittently to push and vibrate the filter cake adhered to the cylinder wall of the filtering inner cylinder (102) to fall off. The outer side wall of the filtering inner cylinder (102) is fixedly provided with corresponding positioning members (203), the rubbing rod members (201) are inserted into the positioning members (203) and the filtering inner cylinder (102) respectively, the inner ends of the rubbing rod members (201) are provided in a sharp cone shape, the outer ends of the rubbing rod members (201) are fixedly connected with half-spherical connecting members (204), and the elastic members (202) are sleeved on the outer sides of the rubbing rod members (201) and are fixed at the two ends of the elastic members (202) on the positioning members (203) and the connecting members (204) respectively. The washing device further comprises a limiting mechanism (5) for fixing the rubbing rod members (201) which move inward intermittently and an unlocking mechanism (6) for unlocking the fixing of the rubbing rod members (201) by the limiting mechanism (5); a plurality of inwardly recessed embedding holes (2011) are arranged at intervals on the outer side shaft diameter of the rubbing rod members (201), the limiting mechanism (5) comprises limiting rods (501) which are inserted into the positioning members (203) and are matched with the embedding holes (2011), the outer ends of the limiting rods (501) are fixedly connected with corresponding iron limiting blocks (503), the outer sides of the limiting rods (501) are sleeved with corresponding reset springs (502), the two ends of the reset springs (502) are fixedly connected on the positioning members (203) and the iron limiting blocks (503) respectively, and the reset springs (502) have a movement tendency of driving the limiting rods (501) to move and be clamped in the embedding holes (2011) to fix the rubbing rod members (201). ​ 2.The lithium-rich manganese ternary material precursor washing device according to claim 1, characterized in that, ​ 3.The device for washing a lithium-rich manganese ternary material precursor according to claim 2, characterized in that, ​ 4.The device for washing a lithium-rich manganese ternary material precursor according to claim 3, characterized in that, The embedded hole (2011) is distributed on the bottom of the rubbing rod (201), the unlocking mechanism (6) comprises a waterproof electromagnet (601) which is arranged below the rubbing rod (201) and spaced apart from the limiting rod (501), and the waterproof electromagnet (601) is fixed by a corresponding support (602) and connected to an external power source by a corresponding wire. 5.The device for washing a lithium-rich manganese ternary material precursor according to claim 1, wherein, The ultrasonic transducer (301) is inlaid on the inner side wall of the moving plate (302), and the vibration driving mechanism (3) comprises a plurality of driving rods (401) fixed on the outer side wall of the moving plate (302), the driving rod (401) is installed on the support outer cylinder (101) by interference fit of the corresponding sealing washer, and the driving rod (401) extends outward and is connected to the piston rod end of the driving oil cylinder (403) through the corresponding adapter plate (402). 6.The device for washing a lithium-rich manganese ternary material precursor according to claim 2, wherein, The vibration driving mechanism (3) comprises a plurality of driving members (404) which are coaxially and uniformly arranged on the inner side wall of the support outer cylinder (101), one end of the driving member (404) is hingedly connected to the support outer cylinder (101), and the other end is connected to the driving rod (401), the width of the driving member (404) gradually increases from one end of the hinge joint to the other end of the support outer cylinder (101), and the smaller end is the hinge joint, and the larger end is the moving part, the driving rod (401) is installed on the support outer cylinder (101) by interference fit of the corresponding sealing washer, and the driving rod (401) extends outward and is connected to the piston rod end of the driving oil cylinder (403), the hinge joint of the driving member (404) and the support outer cylinder (101) is arranged on the outer side of the adapter (204), and the ultrasonic transducer (301) is installed on the inner side wall of the driving member (404) and extends from the hinge joint to the moving part. 7.The device for washing a lithium-rich manganese ternary material precursor according to claim 6, wherein, When the driving rod (401) is not extended, the inner side walls of the hinge joint and the moving part of the driving member (404) are spaced apart from the rubbing rod (201), when the driving rod (401) is extended in place, the rubbing rod (201) is moved in place by pushing the moving part of the driving member (404), when the filter inner cylinder (102) rotates at low speed to drive the rubbing mechanism (2) to rotate, the rubbing rod (201) intermittently contacts the driving member (404), and gradually extends inward as the width of the driving member (404) gradually increases. 8.The device for washing a lithium-rich manganese ternary material precursor according to claim 7, wherein, The outer side of the driving member (404) is recessed and provided with a corresponding guide groove (4041), and the front part of the driving rod (401) is embedded in the guide groove and connected in sliding connection. 9.The device for washing a lithium-rich manganese ternary material precursor according to claim 1, wherein, The top of the supporting outer cylinder (101) is provided with a corresponding closing cover (7) with a liquid inlet pipe (8) connected to the liquid outlet pipe of the washing cylinder and an air inlet pipe (9) connected to the nitrogen source outside, the air inlet pipe (9) is located at the center of the closing cover (7), the bottom sidewall of the supporting outer cylinder (101) is connected with a liquid outlet pipe (10) and an exhaust pipe (13) through corresponding valves, the motor (103) is installed at the bottom of the supporting outer cylinder (101), and the output shaft thereof extends upward and is connected with the filtering inner cylinder (102) through a corresponding frequency converter. 10.The device for washing a lithium-rich manganese ternary material precursor according to claim 1, wherein, The two sides of the supporting outer cylinder (101) are rotatably installed on the supporting frame (11) through corresponding bearings, and are driven to overturn and unload through a corresponding second motor (12).

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