Lithium iron phosphate screening device

Abstract

The invention provides a lithium iron phosphate screening device, and belongs to the technical field of screening equipment.The device comprises a rack, a mounting plate is arranged on the rack, and first supports are arranged on the two sides of the mounting plate; the transmission assembly comprises a transmission shaft, a spiral material scattering plate and a shifting plate assembly at the other end of the transmission shaft. The screening part comprises a shell, a screening net cylinder is arranged in the shell, and one end of the screening net cylinder is connected with the fluted disc; the discharging part comprises a rotating plate, the rotating plate is rotationally connected with one end of the mounting plate, a moving plate is arranged on the rotating plate, a discharging barrel is arranged on the moving plate, a second discharging pipe is arranged on the lower side of the discharging barrel, a rotating disc is arranged at the other end of the discharging barrel, the rotating disc is connected with the screening net barrel in an inserted mode, rolling wheels are in rolling fit with the two sides of the rotating disc, and the rolling wheels are coaxially provided with first connecting shafts; second supports are arranged at the two ends of the movable plate, and the other end of the first connecting shaft penetrates through the second supports to be detachably connected with the second rotating shaft. According to the scheme, the screening net barrel can be conveniently taken out, operation is convenient, the screening efficiency is high, lithium iron phosphate can be fully screened, and materials are saved.

Description

Technical Field

[0001] The invention belongs to the technical field of screening equipment, and in particular relates to a lithium iron phosphate screening device. Background Art

[0002] Lithium iron phosphate is one of the main raw materials used in battery preparation. During the preparation process of lithium iron phosphate, large particles and impurities in the lithium iron phosphate powder need to be removed to prevent large particles and impurities from affecting the internal structure of the battery, causing battery performance to deteriorate, and even causing short circuits and safety hazards.

[0003] The screen of the existing screening device is arranged in the screening tank, and the screening mesh cylinder remains fixed, the screening efficiency is low, and the screening mesh cylinder is inconvenient to take out during maintenance, which makes the screening device inconvenient to clean and maintain; some devices also have tracks set on the outer wall of the screening device along the length direction of the screening device. When cleaning, the entire rotating shaft and the screening mesh cylinder are pulled out along the length direction of the screening device along one end of the screening device, which is heavy and inconvenient to operate; secondly, during the screening process, part of the lithium iron phosphate is mixed with large particles and impurities from the discharge port and is discharged, so that the lithium iron phosphate screening is not sufficient and materials are wasted. Summary of the invention

[0004] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a lithium iron phosphate screening device, which is not only convenient for removing the screening mesh cylinder, easy to operate, and has high screening efficiency, but also can fully screen the lithium iron phosphate and save materials.

[0005] In order to achieve the purpose of the present invention, the following scheme is proposed: A lithium iron phosphate screening device comprises a frame, a transmission assembly arranged in sequence along the length direction of the frame, a screening part, and a discharging part: The frame comprises a horizontally arranged mounting plate, and a group of first supports are symmetrically arranged on both sides of the mounting plate; A transmission assembly comprises a transmission shaft, the outer circumference of the transmission shaft is provided with spiral bulk plates in a circumferential array, one end of the transmission shaft is provided with a chain transmission assembly, one end of the chain transmission assembly is provided with a first rotating shaft, one end of the first rotating shaft is provided with a first gear, the first gear is meshed with a toothed disc, the two sides of the toothed disc are respectively meshed with second gears, the second gear is coaxially provided with a second rotating shaft, the second rotating shaft is rotatably connected with a corresponding group of first supports, and the other end of the transmission shaft is provided with a shift plate assembly; The screening part includes a shell, one end of which is provided with a feeding pipe, a toothed disc is rotatably arranged at the joint between the shell and the feeding pipe, a first discharge pipe passing through a mounting plate is arranged at the lower side of the shell, and is used for discharging qualified lithium iron phosphate powder, a screening mesh cylinder is arranged in the shell, and one end of the screening mesh cylinder is connected to one side of the toothed disc; The discharging part includes a rotating plate, the outer side of one end of the rotating plate is rotatably connected to the outer side of one end of the mounting plate, a movable plate moving along the axial direction of the transmission shaft is provided on the rotating plate, a discharging cylinder is provided on the movable plate, and the other end of the transmission shaft is rotatably connected to one end of the discharging cylinder, a second discharging pipe is provided at the lower end of the discharging cylinder, a turntable is rotatably provided at the other end of the discharging cylinder, the turntable is docked with the other end of the shell, and one side of the turntable is plugged with the other end of the screening mesh cylinder, rollers are respectively rotatably matched at the lower side of the turntable, the rollers are respectively rotatably arranged on the movable plate, a first connecting shaft is coaxially provided with the roller, and second supports are respectively provided at both ends of the movable plate, and the other end of the first connecting shaft passes through the second support and is detachably connected to the second rotating shaft.

[0006] Furthermore, a spiral feeding plate is provided at one end of the transmission shaft, and the spiral feeding plate is correspondingly arranged in the feeding pipe, and the rotation direction of the spiral feeding plate is consistent with the rotation direction of the spiral bulk material plate.

[0007] Furthermore, the chain drive assembly includes a first motor, an output end of the first motor is provided with a driving sprocket, the driving sprocket is arranged at one end of the transmission shaft, the driving sprocket engages the chain, the lower end of the chain engages with a driven sprocket, and the driven sprocket is arranged at the other end of the first rotating shaft.

[0008] Furthermore, a connecting hole is provided at one end of the second rotating shaft, one end of the first connecting shaft passes through the connecting hole, and a locking bolt is provided along an axial direction perpendicular to the connecting hole and the first connecting shaft.

[0009] Furthermore, a cylinder is provided at the other end of the movable plate, and the cylinder is mounted on the rotating plate.

[0010] Furthermore, the paddle assembly includes a second motor arranged at one end of the discharging barrel, a square shaft is arranged at the output end of the second motor, a worm is arranged at one end of the square shaft, one end of the worm is extended into the transmission shaft, and a worm wheel is arranged in a circular array on the outer periphery of the worm, a vertical rod is arranged along the axis of the worm wheel, a spiral paddle is arranged at one end of the vertical rod, the spiral paddle is tangent to the inner wall of the screening mesh barrel, a limit sleeve is arranged in a circular array parallel to the tangent direction of the transmission shaft, the vertical rod is inserted into the limit sleeve, and the spiral paddle and the vertical rod are detachably connected.

[0011] Furthermore, a second connecting shaft is provided at the other end of the worm, one end of the second connecting shaft is rotatably connected to the other end of the transmission shaft, and the other end of the second connecting shaft is provided with a socket matching the cross section of the square shaft.

[0012] Furthermore, one side of the toothed disc is provided with T-shaped rods in a circular array, and convex rings are respectively provided at both ends of the screening mesh cylinder. The outer wall of the large end of the convex ring at one end is provided with first waist-shaped holes in a circular array. The large end size of the first waist-shaped hole matches the horizontal diameter of the T-shaped rod, and the small end of the first waist-shaped hole matches the vertical diameter of the T-shaped rod.

[0013] Furthermore, a reinforcing hoop is provided in the middle of the outer circumference of the screening mesh cylinder, and round rods are provided on both sides of the reinforcing hoop. One end of the round rod is abutted against a convex ring at one end, and the other end of the round rod is passed through the convex ring at the other end. A group of second waist-shaped holes are symmetrically provided on one side of the turntable, and the second waist-shaped holes are plugged into the other end of the round rod.

[0014] Furthermore, a sinking portion is downwardly provided at one end of the mounting plate, a groove is provided at one end of the sinking portion, and a convex strip is provided at one end of the rotating plate, and the convex strip is butted against the groove.

[0015] The beneficial effects of the present invention are: 1. One end of the screening mesh cylinder is connected to the toothed disc, and the other end is connected to the turntable, so that the screening mesh cylinder and the transmission shaft rotate in opposite directions respectively, which not only improves the screening efficiency, but also allows the screening mesh cylinder to be separated from the turntable by moving the discharging part during disassembly, and the screening mesh cylinder can be separated from the toothed disc by rotating the screening mesh cylinder, which is convenient for disassembly.

[0016] 2. The drive shaft adopts a hollow shaft to reduce the weight of the drive shaft, and a paddle assembly is set at the corresponding end of the drive shaft and the turntable to prevent lithium iron phosphate from overflowing from the discharge barrel during the screening process, so that the lithium iron phosphate can be fully screened and material waste can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0018] Figure 1 A three-dimensional schematic diagram of the overall structure of the present application is shown.

[0019] Figure 2 A schematic diagram showing the internal structure of the discharge section and the screening section of the present application is shown.

[0020] Figure 3 A cross-sectional schematic diagram showing the overall structure of the present application.

[0021] Figure 4 A schematic diagram of the connection of the screening mesh cylinder and the components at both ends of the screening mesh cylinder of the present application is shown.

[0022] Figure 5 A schematic diagram of the connection structure between the screening mesh cylinder and the transmission shaft of the present application is shown.

[0023] Figure 6 A schematic cross-sectional view along the axial direction of the worm gear of the present application is shown.

[0024] Figure 7 A schematic diagram of the distribution structure of the spiral bulk plate, spiral feeding plate and spiral dial plate of the present application is shown.

[0025] Markings in the figure: frame-10, mounting plate-11, sinking part-111, groove-112, first support-12, transmission assembly-20, transmission shaft-21, spiral bulk plate-211, spiral feeding plate-212, limiting sleeve-213, chain transmission assembly-22, first motor-221, driving sprocket-222, chain-223, driven sprocket-224, first rotating shaft-23, first gear-24, toothed disc-25, T-bar-251, second gear-26, second rotating shaft-27, connecting hole-271, locking bolt-272, paddle assembly-28, second motor-281, square Axle 282, worm 283, worm wheel 284, vertical rod 285, spiral plate 286, second connecting shaft 287, screening part 30, shell 31, first discharge pipe 311, feeding pipe 32, screening mesh cylinder 33, convex ring 331, first waist-shaped hole 332, reinforcing clamp 333, round rod 334, discharge part 40, rotating plate 41, convex strip 411, movable plate 42, second support 421, cylinder 422, discharge cylinder 43, second discharge pipe 431, turntable 44, second waist-shaped hole 441, roller 45, first connecting shaft 46. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] like Figure 1-Figure 7 As shown, this embodiment provides a lithium iron phosphate screening device for screening lithium iron phosphate powder to remove particles with a particle size larger than a qualified particle size. The device includes a frame 10, a transmission assembly 20 arranged in sequence along the length direction of the frame 10, a screening part 30, a discharging part 40 and other components.

[0028] Specifically, Figure 1-Figure 4 As shown, the frame 10 includes a horizontally arranged mounting plate 11 , and a group of first supports 12 are symmetrically arranged on both sides along the length direction of the mounting plate 11 .

[0029] The transmission assembly 20 includes a transmission shaft 21, a chain transmission assembly 22, a first rotating shaft 23, a first gear 24, a toothed disc 25, a second gear 26, a second rotating shaft 27, and a paddle assembly 28. The transmission shaft 21 is arranged along the length direction of the mounting plate 11. A spiral bulk material plate 211 is arranged in a circumferential array along the outer circumference of the transmission shaft 21. The chain transmission assembly 22 is arranged at one end of the transmission shaft 21. The driven end of the chain transmission assembly 22 is connected to one end of the first rotating shaft 23. The first gear 24 is arranged at the other end of the first rotating shaft 23. The toothed disc 25 is arranged above the first gear 24, and the toothed disc 25 is meshed with the first gear 24. A T-shaped rod 251 is symmetrically arranged on one side of the toothed disc 25 facing the screening part 30. Two second gears 26 are provided, and they are symmetrically meshed on both sides of the toothed disc 25. Each second gear 26 is coaxially connected to a second rotating shaft 27, and the axis of the second rotating shaft 27 is parallel to the axis of the transmission shaft 21. A connecting hole 271 is arranged at one end of the second rotating shaft 27. The paddle assembly 28 is disposed at the other end of the transmission shaft 21. During the screening process, the rotation direction of the paddle assembly 28 is opposite to that of the spiral bulk plate 211, so that lithium iron phosphate with unqualified particle size is discharged.

[0030] The screening part 30 includes a housing 31, a feed pipe 32, and a screening mesh cylinder 33. The housing 31 is a cylindrical structure, and the axis of the housing 31 is coaxial with the axis of the transmission shaft 21. A first discharge pipe 311 is vertically arranged downward on the lower side of the housing 31, and the first discharge pipe 311 is an inverted cone structure, which is used to discharge qualified lithium iron phosphate powder, and a section of cylindrical structure is vertically arranged at the lower end of the first discharge pipe 311, so that the cloth bag can be connected to the first discharge pipe 311 by a clamp, so as to prevent the powder from flying. The feed pipe 32 is coaxially arranged at one end of the housing 31 facing the chain drive assembly 22, and a connecting pipe is vertically arranged above the feed pipe 32 for connecting the feeding equipment to facilitate feeding.

[0031] The screening mesh cylinder 33 is coaxially arranged in the shell body 31, and the feed pipe 32 extends into the screening mesh cylinder 33 toward one end of the toothed disc 25. The two ends of the screening mesh cylinder 33 are respectively provided with convex rings 331. The outer periphery of the convex ring 331 at one end is provided with first waist-shaped holes 332 in a circular array, and the diameter of one end of the first waist-shaped holes 332 is larger than the diameter of the other end, and the distribution direction of the end with a smaller diameter of the first waist-shaped holes 332 is consistent with the rotation direction of the toothed disc 25, the end with a larger diameter of the first waist-shaped hole 332 is consistent with the horizontal diameter of the T-bar 251, and the end with a smaller diameter of the first waist-shaped hole 332 is consistent with the vertical diameter of the T-bar 251, so that the T-bar 251 is clamped with the first waist-shaped hole 332.

[0032] A reinforcing hoop 333 is provided on the middle periphery of the screening mesh cylinder 33, and two round rods 334 are symmetrically provided on the periphery of the reinforcing hoop 333. The round rods 334 are arranged along the axial direction of the screening mesh cylinder 33, and one end of the round rod 334 facing the toothed disc 25 is abutted against the convex ring 331 at one end, and the other end of the round rod 334 passes through the convex ring 331 at the other end of the screening mesh cylinder 33 and is connected with the discharge part 40.

[0033] The discharging part 40 includes a rotating plate 41, a moving plate 42, a discharging cylinder 43, a rotating disk 44, a roller 45, and a first connecting shaft 46. The rotating plate 41 is arranged at the other end of the shell body 31. The end of the mounting plate 11 away from the chain transmission assembly 22 is recessed downward and provided with a sinking part 111. One end of the sinking part 111 is provided with a groove 112, and the groove 112 is arranged along the width direction of the mounting plate 11. The end of the rotating plate 41 facing the shell body 31 is provided with a convex strip 411, and the convex strip 411 is connected with the groove 112. A hinge pin is provided at one end of the connection between the convex strip 411 and the groove 112, so that the rotating plate 41 is rotatably connected to the mounting plate 11. A latch is provided at the other end of the connection between the convex strip 411 and the groove 112, so as to limit the rotating plate 41 and facilitate disassembly. The movable plate 42 moves along the length direction of the mounting plate 11 and is arranged on the top surface of the rotating plate 41. The discharging cylinder 43 is installed above the movable plate 42, and the discharging cylinder 43 is coaxially arranged with the shell 31. The end of the transmission shaft 21 away from the chain transmission assembly 22 is rotatably connected to the outer end of the discharging cylinder 43. A second discharging pipe 431 is provided on the lower side of the discharging cylinder 43 for collecting lithium iron phosphate with unqualified particle size. The lower end of the second discharging pipe 431 is inclined toward the other end of the rotating plate 41, so that there is enough space when fixing the collection bag at the lower end of the second discharging pipe 431, thereby facilitating operation.

[0034] The turntable 44 is coaxially rotatable and arranged at one end of the discharge cylinder 43 facing the shell body 31, and an annular step structure is provided on the side of the discharge cylinder 43 facing the turntable 44, so that the end of the discharge cylinder 43 facing the screening mesh cylinder 33 extends into the screening mesh cylinder 33, and the turntable 44 is rotatably connected to the annular step structure of the discharge cylinder 43, and a group of second waist-shaped holes 441 are symmetrically provided on the side of the turntable 44 facing the shell body, and the second waist-shaped holes 441 are used to insert the other end of the round rod 334, so that the turntable 44 and the screening mesh cylinder 33 rotate synchronously.

[0035] The two sides of the movable plate 42 are respectively protruded upwards with second supports 421, and the rollers 45 are respectively rotatably arranged on the second supports 421, and the rollers 45 are respectively located below the two sides of the turntable 44, and the rollers 45 are respectively rollingly matched with the turntable 44. The first connecting shaft 46 is coaxially arranged with the roller 45, and the first connecting shaft 46 is penetrated through the second support 421, one end of the first connecting shaft 46 is docked with the connecting hole 271 of the second rotating shaft 27, and a locking bolt 272 is vertically arranged along the axis perpendicular to the docking point of the first connecting shaft 46 and the connecting hole 271 to increase the transmission efficiency between the first connecting shaft 46 and the second rotating shaft 27, and the rear end of the movable plate 42 is provided with a cylinder 422, which is installed at the other end of the turntable 41, and when in use, it is used to keep the discharge cylinder 43 docked with the screening net cylinder 33.

[0036] Specific operation process: Start the chain drive assembly 22 so that the active end of the chain drive assembly 22 drives the transmission shaft 21 to rotate in the direction of rotation of the spiral bulk plate 211, so that the output end of the feeding device is connected to the upper end of the feeding pipe 32, so that the lithium iron phosphate powder enters the screening mesh cylinder 33 from the feeding pipe 32 for screening, and is dispersed under the action of the spiral bulk plate 211.

[0037] The driven end of the chain drive assembly 22 drives the first rotating shaft 23 and the first gear 24 to rotate in the same direction as the transmission shaft 21, so that the toothed disc 25 drives the screening mesh cylinder 33 and the rotating disc 44 to rotate in the opposite direction of the transmission shaft 21, thereby improving the screening efficiency.

[0038] After screening, qualified lithium iron phosphate powder is collected and discharged through the first discharge pipe 311 at the lower end of the housing 31. Preferably, a circle of magnets is arranged on the periphery of the first discharge pipe 311 to facilitate the removal of powder in the lithium iron phosphate. After screening, the direction of the paddle assembly 28 is adjusted so that the rotation direction of the paddle assembly 28 is consistent with the rotation direction of the spiral bulk plate 211, so that the lithium iron phosphate with a particle size larger than the qualified particle size enters the discharge barrel 43 and is discharged through the second discharge pipe 431.

[0039] After a period of use, when the screening mesh cylinder 33 in the device needs to be cleaned or maintained, the cylinder 422 drives the moving plate to move away from the screening mesh cylinder 33, and the moving length is greater than the length of the transmission shaft 21 extending from the screening mesh cylinder 33 toward the end of the discharge cylinder 43. Pull out the latch upwards and rotate the rotating plate 41, so that the device can be displayed as follows: Figure 2 In the state shown, the screening mesh cylinder 33 can be taken out by rotating the screening mesh cylinder 33 along the large end direction of the first waist-shaped hole 332 on the convex ring 331, which is easy to operate.

[0040] Specifically, Figure 3As shown, a spiral feeding plate 212 is provided at one end of the transmission shaft 21 extending into the feeding pipe 32 , and the rotation direction of the spiral feeding plate 212 is consistent with the rotation direction of the spiral bulk plate 211 , so as to increase the feeding speed of lithium iron phosphate.

[0041] Specifically, Figure 2-Figure 3 As shown, the chain drive assembly 22 includes a first motor 221, a driving sprocket 222, a chain 223, and a driven sprocket 224. The first motor 221 is arranged on the mounting plate 11, the driving sprocket 222 is coaxially arranged at the output end of the first motor 221, and the driving sprocket 222 is connected to the transmission shaft 21. The upper end of the chain 223 engages with the driving sprocket 222, and the lower end engages with the driven sprocket 224. The driven sprocket 224 is installed at the other end of the first transmission shaft 23, and the first transmission shaft 23 is rotatably connected to the top surface of the mounting plate 11, thereby reducing the cost of the device while ensuring the transmission efficiency.

[0042] Specifically, Figure 5-Figure 6 As shown, the direction adjustment of the paddle assembly 28 is implemented as follows: the paddle assembly 28 includes a second motor 281, a square shaft 282, a worm 283, a worm wheel 284, a vertical rod 285, a spiral paddle 286, and a second connecting shaft 287. The second motor 281 is installed at the outer end of the discharge barrel 43, the square shaft 282 is arranged at the output end of the second motor 281, and the second connecting shaft 287 is coaxially arranged at one end of the transmission shaft 21 facing the discharge barrel 43, and the outer end of the second connecting shaft 287 is rotatably connected to one end of the transmission shaft 21 facing the discharge barrel 43, and is in the second The outer end of the connecting shaft 287 is recessed with a socket, the square shaft 282 is plugged into the socket, the worm 283 is coaxially arranged at the other end of the second connecting shaft 287, the worm wheel 284 is arranged in a circular array on the outer periphery of the worm 283, and the worm wheel 284 is meshed with the worm 283, the axis of the worm wheel 284 is parallel to the normal direction of the cross section of the transmission shaft 21, the vertical rod 285 is coaxially arranged on the worm wheel 284, and one end of the vertical rod 285 passes through the transmission shaft 21 to connect the spiral plate 286, the top of the spiral plate 286 is an arc-shaped structure, and is tangent to the inner wall of the screening mesh cylinder 33.

[0043] A limit sleeve 213 is provided in a circular array parallel to the tangential direction of the transmission shaft 21, and a vertical rod 285 is passed through the limit sleeve 213, so that the worm gear 284 and the spiral plate 286 are respectively located at both ends of the limit sleeve 213, thereby preventing the worm gear 284 from axial movement. The spiral plate 286 and the vertical rod 285 are detachably connected to facilitate installation.

[0044] When in use, start the second motor 281 so that the second motor 281 drives the square shaft 282, so that the square shaft 282 drives the second transmission shaft 287 and the worm 283 to rotate synchronously, so that the worm 283 drives each worm gear 284 to rotate, so that the vertical rod 285 corresponding to the worm gear 284 drives the spiral plate 286 to rotate, thereby realizing the direction adjustment of the spiral plate 286. When lithium iron phosphate is screened, the rotation direction of the spiral plate 286 is opposite to the rotation direction of the spiral bulk plate 211. When the screening is completed and the particles with a particle size larger than the qualified particle size in the screening mesh cylinder 33 need to be discharged, the spiral plate 286 is rotated to the same rotation direction as the spiral bulk plate 211.

[0045] The above description is only a preferred embodiment of the present invention, and is not intended to be the only one or to limit the present invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A lithium iron phosphate screening device, comprising a frame (10), a transmission assembly (20) arranged in sequence along the length direction of the frame (10), a screening part (30), and a discharging part (40), characterized in that: The frame (10) comprises a horizontally arranged mounting plate (11), and a group of first supports (12) are symmetrically arranged on both sides of the top surface of the mounting plate (11); A transmission assembly (20) comprises a transmission shaft (21), the outer circumference of which is provided with spiral bulk plates (211) in a circumferential array, a chain transmission assembly (22) is provided at one end of the transmission shaft (21), a first rotating shaft (23) is provided at one end of the chain transmission assembly (22), a first gear (24) is provided at one end of the first rotating shaft (23), a toothed disc (25) is meshed with the first gear (24), second gears (26) are respectively meshed on both sides of the toothed disc (25), a second rotating shaft (27) is coaxially provided with the second gear (26), the second rotating shaft (27) is rotatably connected to a corresponding group of first supports (12), and a shifting plate assembly (28) is provided at the other end of the transmission shaft (21); The screening part (30) comprises a housing (31), one end of which is provided with a feeding pipe (32), a toothed disc (25) is rotatably arranged at the joint between the housing (31) and the feeding pipe (32), a first discharge pipe (311) passing through the mounting plate (11) is arranged on the lower side of the housing (31) for discharging qualified lithium iron phosphate powder, a screening net cylinder (33) is arranged in the housing (31), and one end of the screening net cylinder (33) is connected to one side of the toothed disc (25); The discharge portion (40) comprises a rotating plate (41), one end of the rotating plate (41) is rotatably connected to the outer end of the mounting plate (11), a movable plate (42) is provided on the rotating plate (41) and moves along the axial direction of the transmission shaft (21), a discharge barrel (43) is provided on the movable plate (42), and the other end of the transmission shaft (21) is rotatably connected to one end of the discharge barrel (43), a second discharge pipe (431) is provided at one end of the lower side of the discharge barrel (43), and a rotating disk (44) is rotatably provided at the other end of the discharge barrel (43). The disc (44) is butted against the other end of the housing (31), and one side of the rotating disc (44) is plugged into the other end of the screening mesh cylinder (33). Rollers (45) are respectively provided below the two sides of the rotating disc (44) for rolling cooperation. The rollers (45) are respectively rotatably arranged on the movable plate (42). The rollers (45) are coaxially provided with a first connecting shaft (46). The two ends of the movable plate (42) are respectively provided with a second support (421). The other end of the first connecting shaft (46) passes through the second support (421) and is detachably connected to the second rotating shaft (27).

2. The lithium iron phosphate screening device according to claim 1, characterized in that: A spiral feeding plate (212) is provided at one end of the transmission shaft (21), and the spiral feeding plate (212) is correspondingly arranged in the feeding pipe (32), and the rotation direction of the spiral feeding plate (212) is consistent with the rotation direction of the spiral bulk material plate (211).

3. The lithium iron phosphate screening device according to claim 1, characterized in that: The chain transmission assembly (22) comprises a first motor (221), an output end of the first motor (221) is provided with a driving sprocket (222), the driving sprocket (222) is arranged at one end of the transmission shaft (21), the driving sprocket (222) meshes with a chain (223), the lower end of the chain (223) meshes with a driven sprocket (224), and the driven sprocket (224) is arranged at the other end of the first rotating shaft (23).

4. The lithium iron phosphate screening device according to claim 1, characterized in that: One end of the second rotating shaft (27) is provided with a connecting hole (271), one end of the first connecting shaft (46) is passed through the connecting hole (271), and a locking bolt (272) is provided along an axial direction perpendicular to the connecting hole (271) and the first connecting shaft (46).

5. The lithium iron phosphate screening device according to claim 4, characterized in that: The other end of the movable plate (42) is provided with a cylinder (422), and the cylinder (422) is mounted on the rotating plate (41).

6. The lithium iron phosphate screening device according to claim 1, characterized in that: The paddle assembly (28) comprises a second motor (281) arranged at one end of the discharging cylinder (43); a square shaft (282) is arranged at the output end of the second motor (281); a worm (283) is arranged at one end of the square shaft (282); one end of the worm (283) extends into the transmission shaft (21); a worm wheel (284) is arranged in a circular array on the outer periphery of the worm (283); a vertical rod (285) is arranged along the axis of the turbine (284); a spiral paddle (286) is arranged at one end of the vertical rod (285); the spiral paddle (286) is tangent to the inner wall of the screening net cylinder (33); a limiting sleeve (213) is arranged in a circular array parallel to the tangent direction of the transmission shaft (21); the vertical rod (285) is inserted into the limiting sleeve (213); and the spiral paddle (286) and the vertical rod (285) are detachably connected.

7. The lithium iron phosphate screening device according to claim 6, characterized in that: The other end of the worm (283) is provided with a second connecting shaft (287), one end of the second connecting shaft (287) is rotatably connected to the other end of the transmission shaft (21), and the other end of the second connecting shaft (287) is provided with a socket matching the cross section of the square shaft (282).

8. The lithium iron phosphate screening device according to claim 1, characterized in that: T-shaped rods (251) are arranged in a circumferential array on one side of the toothed disc (25), convex rings (331) are respectively arranged at both ends of the screening net cylinder (33), and first waist-shaped holes (332) are arranged in a circumferential array on the outer wall of the large end of the convex ring (331) at one end, the large end size of the first waist-shaped holes (332) matches the horizontal diameter of the T-shaped rod (251), and the small end of the first waist-shaped holes (332) matches the vertical diameter of the T-shaped rod (251).

9. The lithium iron phosphate screening device according to claim 8, characterized in that: A reinforcing hoop (333) is provided at the middle of the outer circumference of the screening net cylinder (33), and round rods (334) are provided on both sides of the reinforcing hoop (333). One end of the round rod (334) abuts against a convex ring (331) at one end, and the other end of the round rod (334) is passed through the convex ring (331) at the other end. A group of second waist-shaped holes (441) are symmetrically provided on one side of the rotating disk (44), and the second waist-shaped holes (441) are plugged into the other end of the round rod (334).

10. The lithium iron phosphate screening device according to claim 1, characterized in that: A sinking portion (111) is provided downwardly at one end of the mounting plate (11), a groove (112) is provided at one end of the sinking portion (111), and a convex strip (411) is provided at one end of the rotating plate (41), the convex strip (411) butting against the groove (112).

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