A lithium manganate powder powdering mechanism

Abstract

The application discloses a kind of lithium manganate powder bowl filling mechanism, it is related to battery production technical field, including discharge pipe, the first lifting mechanism is equipped in the directly below of discharge pipe, the first lifting mechanism top is fixed with the plane plate of supporting bowl body, discharge pipe is fixed with isolation cover on sleeve joint, when the first lifting mechanism is at the end position of stroke, then isolation cover and plane plate constitute sealed space, the airflow transfer device is communicated on the isolation cover, the first lifting mechanism moves towards the end position of stroke in the first suction stage, the airflow transfer device is in the second suction stage, then sealed space is in the state of evacuation, discharge pipe can be towards in the bowl body in vacuum environment Powder is put into, the application makes that bowl body in the process of filling powder, reduce the material drop height, while isolation cover and plane plate constitute the vacuum environment of containing bowl body, to improve the condition of powder raising in the process of powder bowl filling.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, specifically to a lithium manganese oxide powder loading mechanism. Background Technology

[0002] In battery production, after the lithium manganese oxide powder undergoes a mixing process, it needs to be loaded into a sagger and then placed into a kiln for sintering.

[0003] Existing patents include the one with publication number CN214933512U, titled "A device for filling a sagger with powdered material". This patent includes "a loading box, an inlet inclinedly connected to one side of the loading box, a discharge pipe vertically arranged at the bottom of the loading box, the lower end of the discharge pipe connected to a working box, a transmission mechanism arranged inside the working box, elastic support components arranged on both sides of the transmission mechanism, a vibrating screen inclinedly connected to the upper end of the elastic support components, a discharge hopper connected to the lower end of the vibrating screen, and a horizontally arranged base".

[0004] During the filling process of lithium manganese oxide powder, due to the gap between the bottom of the sagger and the discharge end of the lithium manganese oxide powder equipment, some powder is easily thrown up during the falling process of the filling sagger, resulting in powder waste. Therefore, we propose a new technical solution to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a lithium manganese oxide powder filling mechanism to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A lithium manganese oxide powder filling mechanism includes a feeding pipe, a first lifting mechanism located directly below the feeding pipe, a flat plate for supporting the bowl fixed to the top of the first lifting mechanism, and an isolation cover fitted onto the feeding pipe. When the first lifting mechanism is at the end of its stroke, the isolation cover and the flat plate form a sealed space. An airflow transfer device is connected to the isolation cover. During a first suction phase, the first lifting mechanism moves toward the end of its stroke. During a second suction phase, the sealed space is evacuated. The feeding pipe can feed powder into the bowl in a vacuum environment.

[0008] Preferably, the first lifting mechanism includes a base cylinder, and a piston column unit is inserted into the cylinder opening of the base cylinder, with the top end of the piston column unit fixed to the flat plate.

[0009] Preferably, the airflow transfer device includes an air pump, the air outlet of the air pump is connected to the base cylinder, the air inlet of the air pump is connected to the isolation cover through a piston column unit to form an air guide path, the piston column unit has a closed state that cuts off the air guide path, and the piston column unit also has a conductive state that makes the air guide path unobstructed.

[0010] Preferably, the piston rod unit includes a rod that is adapted to be inserted into the base cylinder, and the end of the rod is sealed and fixed to the flat plate.

[0011] Preferably, a piston block is slidably adapted inside the column. One side of the piston block is a first space connected to the air inlet of the air pump, and the other side of the piston block is a second space. The piston block can slide inside the column according to the pressure change between the first space and the second space, thereby controlling the on / off state of the air guiding path. The end face of the piston block facing the first space has an inclined surface.

[0012] Preferably, the flat plate has a through hole, and a support column whose bottom end is fixed to the piston block is movably inserted into the through hole. A support plate for supporting the bowl is fixed to the top of the support column. An isolation hose fixed to the piston block is sleeved on the support column, and the other end of the isolation hose is fixed to the bottom surface of the flat plate.

[0013] Preferably, a conveying pipe is connected to the side of the cylinder opening, and the other end of the conveying pipe is connected to the isolation cover.

[0014] Preferably, the opening end of the isolation cover is fixed with an elastic sealing gasket ring.

[0015] Preferably, a support platform is installed at the bottom of the base cylinder.

[0016] Preferably, the air pump is a bidirectional air pump capable of pumping in both directions.

[0017] In the above technical solution, the present invention provides a lithium manganese oxide powder filling mechanism. By setting up an isolation cover, an airflow transfer device, and a flat plate installed on the first lifting mechanism, the discharge pipe can be close to the bowl during the powder filling process, reducing the drop height. At the same time, the isolation cover and the flat plate form a vacuum environment to accommodate the bowl, thereby improving the situation of powder scattering during the powder filling process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a simplified overall schematic diagram of a lithium manganese oxide powder loading mechanism according to the present invention;

[0020] Figure 2 This is a simplified cross-sectional view of the first lifting mechanism of the lithium manganese oxide powder loading mechanism of the present invention at the starting position.

[0021] Figure 3 This is a simplified cross-sectional view of the first lifting mechanism of the lithium manganese oxide powder loading mechanism of the present invention at its end position.

[0022] Figure 4 This is a simplified schematic diagram showing the bottom end of the feeding tube of a lithium manganese oxide powder filling mechanism of the present invention extending into the inner bottom wall of the bowl.

[0023] Figure 5 This is a schematic diagram showing that the vertical tubes of the lithium manganese oxide powder loading mechanism of the present invention are evenly distributed around the circumference of the feeding tube.

[0024] Figure 6 This is a cross-sectional schematic diagram of the extension tube of a lithium manganese oxide powder filling mechanism of the present invention being inserted into a vertical tube.

[0025] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Feeding pipe; 2. First lifting mechanism; 2.1. Base cylinder; 2.2. Piston column unit; 2.21. Column; 2.22. Piston block; 2.23. Inclined section; 3. Flat plate; 4. Isolation cover; 5. Airflow transfer device; 5.1. Air pump; 5.2. Connecting pipe; 6. Through hole; 7. Support column; 8. Support plate; 9. Isolation hose; 10. Support platform; 11. Conveying pipe; 12. Elastic sealing gasket ring; 13. Annular pipe; 14. Vertical pipe; 15. Extension cylinder; 16. Atomizing nozzle; 17. Flow channel hole; 18. Valve plug; 18.1. Frustum block; 18.2. Extension rod; 19. Connecting line; 20. Limit line. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] In battery production, after the lithium manganese oxide powder undergoes a mixing process, it needs to be loaded into a sagger and then placed into a kiln for sintering. In existing technology, the sagger is transferred and conveyed on the production line by a corresponding conveying equipment. When the sagger is conveyed to the feeding position, it stops. During the stop of the sagger, the discharge pipe of the powder loading equipment releases powder into the sagger. However, during the process of the powder falling into the sagger, due to the gap between the bottom of the sagger and the discharge end, it is difficult to avoid some powder flying out of the sagger, resulting in powder waste. Therefore, we propose a new technical solution to solve the above problems.

[0030] Please see Figures 1-7 The present invention provides a lithium manganese oxide powder filling mechanism, including a feeding pipe 1, a first lifting mechanism 2 located directly below the feeding pipe 1, a flat plate 3 for supporting the bowl fixed at the top of the first lifting mechanism 2, an isolation cover 4 sleeved and fixed on the feeding pipe 1, when the first lifting mechanism 2 is at the end of its stroke, the isolation cover 4 and the flat plate 3 form a sealed space, an airflow transfer device 5 is connected to the isolation cover 4, the airflow transfer device 5 moves the first lifting mechanism 2 toward the end of its stroke in the first suction stage, the airflow transfer device 5 is in a vacuum state in the second suction stage, and the feeding pipe 1 can feed powder into the bowl in the vacuum environment;

[0031] Specifically, the material discharge pipe 1 is arranged vertically, the lifting direction line of the first lifting mechanism 2 is perpendicular to the horizontal plane, the first lifting mechanism 2 has a maximum extended end position and a maximum contracted starting position in its vertical movement stroke, the bowl is a high-temperature resistant flat-bottomed container for holding powder into the high-temperature furnace, also called a sagger, the powder is lithium manganese oxide powder, when the first lifting mechanism 2 is at the starting position, the conveying equipment and the bowl can be docked and transferred, or the corresponding robot can be docked and transferred with the bowl. The specific conveying equipment and docking method are existing technologies and will not be described in detail. The top surface of the flat plate 3 is parallel to the horizontal plane, the top surface of the flat plate 3 is a smooth surface, the isolation cover 4 can cover the flat plate 3, the cover opening end of the isolation cover 4 is fixed with an elastic sealing gasket ring 12, the airflow transfer device 5 has a forward transfer state and a reverse transfer state, the forward transfer state of the airflow transfer device 5 consists of a first suction stage and a second suction stage;

[0032] In actual use, when the first lifting mechanism 2 is at the starting position, the empty bowl is located on the flat plate 3. During the forward transfer state of the airflow transfer device 5, in the first suction stage, the first lifting mechanism 2 moves from the starting position to the end position, and the flat plate 3 lifts the bowl upward with the first lifting mechanism 2. When the first lifting mechanism 2 is at the end position, the flat plate 3 and the isolation cover 4 are locked together, and the bowl is in the sealed space formed by the isolation cover 4 and the flat plate 3. At this time, the bowl is also close to the discharge end of the discharge pipe 1. As the airflow transfer device 5 continues to be in the forward transfer state, the airflow transfer device 5 enters the second suction stage. The first lifting mechanism 2 remains at the end position. At the same time, the air in the sealed space formed by the isolation cover 4 and the flat plate 3 is extracted, so that the bowl is in a vacuum environment. At this time, the discharge pipe 1 puts powder into the bowl in the vacuum environment, thereby completing the loading of powder into the bowl.

[0033] Similarly, when the airflow transfer device 5 is in the reverse transfer state, the airflow transfer direction is towards the sealed space, so that the sealed space is restored to an air state. Then, the first lifting mechanism 2 moves from the end position to the starting position, so that the bowl returns to the position of docking and transfer with the conveyor line. The whole process allows the discharge pipe to be close to the bowl to discharge the powder during the process of filling the bowl, reducing the drop height. At the same time, the isolation cover and the flat plate form a vacuum environment to accommodate the bowl, thereby improving the situation of powder flying up during the powder filling process.

[0034] In another embodiment of the present invention, the first lifting mechanism 2 includes a base cylinder 2.1, the axis of which is perpendicular to the horizontal plane. A support platform 10 is installed at the bottom of the base cylinder 2.1. The support platform 10 is a lifting support device with adjustable height, which can adjust the distance between the base cylinder 2.1 and the isolation cover 4. A piston column unit 2.2 is inserted into the cylinder opening of the base cylinder 2.1. The top end of the piston column unit 2.2 is fixed to the flat plate 3.

[0035] The airflow transfer device 5 includes an air pump 5.1, which is a bidirectional air pump capable of forward and reverse pumping. In the forward transfer state, the air outlet of the air pump 5.1 is connected to the base cylinder 2.1, and the air inlet of the air pump 5.1 is connected to the isolation cover 4 through the piston column unit 2.2 to form an air guide path. The piston column unit 2.2 has a closed state that cuts off the air guide path, and the piston column unit 2.2 also has a conductive state that makes the air guide path unobstructed.

[0036] Furthermore, the piston cylinder unit 2.2 includes a cylinder 2.21 that is adapted to and inserted into the base cylinder 2.1. The cylinder opening end of the cylinder 2.21 is sealed and fixed to the flat plate 3. A piston block 2.22 is slidably adapted inside the cylinder 2.21. One side of the piston block 2.22 is a first space connected to the air inlet end of the air pump 5.1. Preferably, the air inlet end of the air pump 5.1 is connected to the cylinder 2.21 near the cylinder opening via a connecting pipe 5.2. The connecting pipe 5.2 is preferably lined with a spiral metal wire hose. The other side of the piston block 2.22 is a second space, i.e., a piston... The other side of the plug 2.22 forms the wall of the second space with the inner wall of the cylinder 2.21. The piston block 2.22 can slide inside the cylinder 2.21 according to the pressure change between the first space and the second space, thereby controlling the opening and closing state of the air guide path. It should be noted that the piston block 2.22 has a beveled part 2.23 on the end face facing the first space. In addition, the cylinder opening end side of the cylinder 2.21 is connected to the delivery pipe 11. The other end of the delivery pipe 11 is connected to the isolation cover 4. The delivery pipe 11 is preferably a spiral steel wire lined hose.

[0037] In actual use, the air pump 5.1 draws air in the forward direction. In the first suction stage, the airflow transfer device 5 is in the forward transfer state. At this time, the external air passes through the isolation cover 4, the delivery pipe 11, the first space inside the column 2.21, the connecting pipe 5.2, the air inlet end of the air pump 5.1, the air outlet end of the air pump 5.1, and finally enters the base cylinder 2.1. At this time, the air pressure inside the base cylinder 2.1 increases, causing the column 2.21 to extend outward, and the first lifting mechanism 2 moves from the starting position to the end position.

[0038] When the first lifting mechanism 2 is at its end position, the isolation cover 4 and the flat plate 3 form a sealed space. The air pump 5.1 continues to pump air in the forward direction, and then enters the second suction stage. The air in the sealed space passes through the delivery pipe 11, the first space in the column 2.21, the connecting pipe 5.2, the air inlet end of the air pump 5.1, and the air outlet end of the air pump 5.1 in sequence, and finally enters the base cylinder 2.1. At this time, the air in the base cylinder 2.1 enters a compressed state, and the compressed air in the base cylinder 2.1 causes the column 2.21 to apply a stable supporting force to the flat plate 3, ensuring that the joint between the flat plate 3 and the isolation cover 4 is in a tight state. It should be noted that the pressure value in the base cylinder 2.1 can be indirectly adjusted by adjusting the height of the support platform 10.

[0039] When the sealed space is in a vacuum state, the piston block 2.22 inside the cylinder 2.21 is under the suction action of the air pump 5.1, and the pressure in the first space is also less than the pressure in the second space. Then the piston block 2.22 moves towards the first space. This movement is the forward movement of the piston block 2.22. When the piston block 2.22 reaches the end of the forward movement, it blocks the air inlet of the air pump 5.1. At the same time, the piston block 2.22 blocks the delivery pipe 11 at the side access end of the cylinder 2.21. At this time, the piston column unit 2.2 is in a closed state that cuts off the air guide path. At the same time, the inclined part 2.23 of the piston block 2.22 and the wall of the cylinder 2.21 form a gap space.

[0040] After the powder is loaded into the bowl, the air pump 5.1 reverses its flow, meaning the air transfer device 5 is in reverse transfer mode. The air in the base cylinder 2.1 passes through the air pump 5.1, the connecting pipe 5.2, and the first space of the column cylinder 2.21 in sequence. It should be noted that when the air enters the first space, the airflow blows towards the gap space where the inclined part 2.23 is located, causing the piston block 2.22 to move towards the second space. This movement is the reverse movement of the piston block 2.22, thereby releasing the blockage of the piston block 2.22 on the side of the inlet end of the conveying pipe 11 at the cylinder opening of the column cylinder 2.21. Then the airflow passes through the conveying pipe 11 and finally enters the sealed space, so that the pressure inside and outside the sealed space returns to normal. Then, as the air in the base cylinder 2.1 is extracted, the air pressure in the base cylinder 2.1 decreases, causing the column cylinder 2.21 to retract inward, and thus the first lifting mechanism 2 moves from the end position to the starting position.

[0041] Throughout the process, the lifting and lowering states of the first lifting mechanism 2 can be switched by changing the suction direction of the air pump 5.1, as well as the vacuum environment of the bowl when receiving powder, thereby improving the situation of powder being thrown up during the powder filling process.

[0042] In another embodiment of the present invention, a through hole 6 is provided on the flat plate 3. A support column 7 with its bottom end fixed to the piston block 2.22 is movably inserted into the through hole 6. The axis of the support column 7 is perpendicular to the horizontal plane. A support plate 8 is fixed to the top of the support column 7 to support the bowl. The support plate 8 can fully support the bottom of the bowl. The surface of the support plate 8 is parallel to the flat plate 3. An isolation hose 9 fixed to the piston block 2.22 is provided on the outer sleeve of the support column 7. The other end of the isolation hose 9 is sealed and fixed to the bottom surface of the flat plate 3. The isolation hose 9 is preferably an elastic rubber tube. The outer wall of the isolation hose 9, the inner wall of the column 2.21, the piston block 2.22, and the surface of the flat plate 3 form the wall of the first space. At this time, the through hole 6, the support column 7, the support plate 8, and the piston block 2.22 together form a second lifting mechanism on the flat plate 3. The second lifting mechanism can perform corresponding lifting actions according to the air pressure change in the column 2.21.

[0043] In actual use, the first lifting mechanism 2 is at the end position, and the airflow transfer device 5 is in the second suction stage. When the piston block 2.22 moves forward, the piston block 2.22, through the support column 7, causes the bowl on the tray 8 to move further toward the bottom end of the discharge pipe 1, so that the bottom end of the discharge pipe 1 extends into the accommodating space of the bowl, and the bottom end of the discharge pipe 1 is close to the inner bottom wall of the bowl. Then the discharge pipe 1 releases powder. When the airflow transfer device 5 is in the reverse transfer state, the piston block 2.22 moves in the opposite direction. The piston block 2.22, through the support column 7, causes the bowl on the tray 8 to move away from the bottom end of the discharge pipe 1, so that the bottom end of the discharge pipe 1 is removed from the accommodating space of the bowl.

[0044] In other words, the entire process of the discharge pipe 1 extending into the bowl, the discharge pipe 1 releasing the powder, and the bottom of the bowl away from the discharge pipe 1 are all carried out in a vacuum environment. This avoids dust generation during the powder loading process and also limits the shape of the powder entering the bowl. Because the distance of the powder falling to the bottom of the bowl is shortened, the inertial impact of the falling powder is reduced, and the cone-shaped accumulation pattern of the powder in the bowl is also improved. Due to the change in the accumulation pattern, the full load rate of the bowl loaded with powder is also improved.

[0045] In another embodiment of the present invention, an annular pipe 13 located outside the isolation cover 4 is fixedly sleeved on the body of the discharge pipe 1. The annular pipe 13 is connected to a liquid supply tank. The liquid in the liquid supply tank is flammable, such as a mixture of water and ethanol. The liquid supply tank can pump the liquid in the tank into the annular pipe 13 through corresponding pipelines. The bottom of the annular pipe 13 is connected to multiple vertical pipes 14. Each vertical pipe 14 is evenly distributed along the annular line of the annular pipe 13. The axis of each vertical pipe 14 is perpendicular to the horizontal plane. An extension tube 15 is adapted to be inserted into the bottom end of each vertical pipe 14. An atomizing nozzle 16 is installed at the bottom end of each extension tube 15. The extension tube 15 can move linearly in the axial direction within the vertical tube 14, that is, the extension tube 15 can extend and retract within the vertical tube 14. The extension tube 15 has a flow channel hole 17 that communicates with the liquid inlet end of the atomizing nozzle 16. A valve plug 18 is adapted to be installed in the flow channel hole 17. The valve plug 18 has a blocking position that can block the flow channel hole 17, and also has a clearance position that keeps the flow channel hole 17 unobstructed. The top end of the valve plug 18 is connected to the inner top wall of the annular tube 13 by a connecting line 19. The bottom end of the valve plug 18 is connected to the inner wall of the flow channel hole 17 by an elastic limiting line 20. The number of limiting lines 20 can be selected as multiple.

[0046] The valve plug 18 includes a frustum block 18.1, the top of which is connected to the connecting line 19, and an extension rod 18.2 is fixed to the bottom of the frustum block 18.1. The cross-sectional diameter of the extension rod 18.2 is smaller than the diameter of the flow channel hole 17, the axis of the extension rod 18.2 is perpendicular to the horizontal plane, and the rod body of the extension rod 18.2 is fixed to the limiting line 20.

[0047] In actual use, after the isolation cover 4 is completely separated from the plate 3, the liquid in the annular pipe 13 is transported to the extension tube 15 through the vertical pipe 14. During the transport process, the extension tube 15 is pushed by the liquid and extends out of the vertical pipe 14. During this process, when the connecting line 19 is in a straightened state, the valve plug 18 can no longer continue to extend downward with the extension tube 15, thus causing the valve plug 18 to disengage from the flow channel hole 17. At this time, the valve plug 18 is in a clearance position to keep the flow channel hole 17 unobstructed. At the same time, the limiting... The position line 20 is also pulled and kept taut, which restricts the downward extension movement of the extension tube 15 and prevents the extension tube 15 from completely detaching from the vertical tube 14. In this state, the liquid in the extension tube 15 enters the atomizing nozzle 16 through the flow channel hole 17, thereby generating a mist that covers the powder in the bowl, which further improves the stability of the powder during the transfer process and helps to suppress the powder from flying up. On the other hand, the liquid with combustion-supporting properties also plays a good combustion assisting role in the subsequent combustion of the powder in the combustion furnace.

[0048] When the next bowl is filled with powder, as the isolation cover 4 and the plate 3 approach each other, the extension tube 15 retracts into the vertical tube 14 under the reaction force of the bowl. It should be noted that the end of the atomizing nozzle 16 is fitted with a support member that can withstand compression. The support member protects the atomizing nozzle 16. During the process of the extension tube 15 retracting into the vertical tube 14, under the pulling action of the elastic limit line 20, the valve plug 18 returns to the blocking position that seals the flow channel hole 17. At this time, the extension tube 15 is in the state of retracting into the vertical tube 14.

[0049] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lithium manganese oxide powder filling mechanism, comprising a feeding pipe (1), characterized in that, A first lifting mechanism (2) is provided directly below the discharge pipe (1). A flat plate (3) supporting the bowl is fixed on the top of the first lifting mechanism (2). An isolation cover (4) is sleeved and fixed on the discharge pipe (1). When the first lifting mechanism (2) is at the end of its stroke, the isolation cover (4) and the flat plate (3) form a sealed space. An airflow transfer device (5) is connected to the isolation cover (4). In the first suction stage, the first lifting mechanism (2) moves toward the end of its stroke. In the second suction stage, the sealed space is evacuated. The discharge pipe (1) can discharge powder into the bowl in the vacuum environment. The first lifting mechanism (2) includes a base cylinder (2.1), and a piston column unit (2.2) is inserted into the cylinder opening of the base cylinder (2.1). The top end of the piston column unit (2.2) is fixed to the flat plate (3). The airflow transfer device (5) includes an air pump (5.1). The air outlet of the air pump (5.1) is connected to the base cylinder (2.1), and the air inlet of the air pump (5.1) is connected to the isolation cover (4) through the piston column unit (2.2) to form an air guiding path. The piston column unit (2.2) includes a column (2.21) that is adapted to be inserted into the base cylinder (2.1). The cylinder opening end of the column (2.21) is sealed and fixed to the flat plate (3). A piston block (2.22) is slidably adapted inside the column (2.21). One side of the piston block (2.22) is a first space connected to the air inlet end of the air pump (5.1), and the other side of the piston block (2.22) is a second space. The piston block (2.22) can slide inside the column (2.21) according to the pressure change between the first space and the second space, thereby controlling the opening and closing state of the air guiding path. A beveled part (2.23) is opened on the end face of the piston block (2.22) facing the first space.

2. The lithium manganese oxide powder loading mechanism according to claim 1, characterized in that, The piston column unit (2.2) has a closed state that cuts off the gas guide path, and the piston column unit (2.2) also has a conductive state that allows the gas guide path to be unobstructed.

3. The lithium manganese oxide powder filling mechanism according to claim 2, characterized in that, A through hole (6) is provided on the flat plate (3). A support column (7) with its bottom end fixed to the piston block (2.22) is movably inserted into the through hole (6). A support plate (8) for supporting the bowl is fixed at the top of the support column (7). An isolation hose (9) fixed to the piston block (2.22) is provided on the support column (7). The other end of the isolation hose (9) is fixed to the bottom surface of the flat plate (3).

4. The lithium manganese oxide powder filling mechanism according to claim 3, characterized in that, The cylindrical tube (2.21) has a conveying pipe (11) connected to the side of its opening end, and the other end of the conveying pipe (11) is connected to the isolation cover (4).

5. A lithium manganese oxide powder filling mechanism according to claim 4, characterized in that, An elastic sealing gasket (12) is fixed at the opening end of the isolation cover (4).

6. The lithium manganese oxide powder filling mechanism according to claim 1, characterized in that, A support platform (10) is installed at the bottom of the base cylinder (2.1).

7. The lithium manganese oxide powder filling mechanism according to claim 1, characterized in that, The air pump (5.1) is a bidirectional air pump capable of pumping in both directions.

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