CN220697408U

CN220697408U - Powder screening equipment for lithium battery production

Info

Publication number: CN220697408U
Application number: CN202321871674.XU
Authority: CN
Inventors: 李镇璧; 孙术刚
Original assignee: Dongguan Bosen New Energy Co ltd
Current assignee: Dongguan Bosen New Energy Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-04-02
Anticipated expiration: 2033-07-17

Abstract

The utility model relates to the technical field of lithium battery production equipment, in particular to powder screening equipment for lithium battery production. The technical proposal comprises: the screening device comprises a collecting tank body and a workbench, wherein a screening tank body is arranged at the top end of the collecting tank body, a cover plate is arranged at the top end of the screening tank body, the upper surface of the cover plate is connected with a mounting plate through a supporting rod, a first gear motor is arranged on the upper surface of the mounting plate, an output shaft of the first gear motor penetrates through the surface of the mounting plate and is connected with a first rotating shaft through a coupler, a bottom end of the first rotating shaft penetrates through a bearing on the surface of the cover plate and extends into the screening tank body, and second rotating shafts are arranged on two sides of the first rotating shaft. The utility model effectively improves the screening effect of the graphite powder of the lithium battery, avoids the situation that the rest graphite powder cannot be effectively screened because the larger graphite powder is positioned at the bottom in the screening process of the graphite powder of the lithium battery, and has strong practicability.

Description

Powder screening equipment for lithium battery production

Technical Field

The utility model relates to the technical field of lithium battery production equipment, in particular to powder screening equipment for lithium battery production.

Background

Lithium batteries are a type of battery invented by edison using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. The reaction equation used by the battery is: li+mno2=limno 2 this reaction is an oxidation-reduction reaction, discharging. Since lithium metal has been very active in chemical nature and has been very high in environmental requirements for processing, storage and use, lithium batteries have not been used for a long time. Lithium batteries have now become the mainstream as modern science evolves. When the lithium battery graphite powder is produced and processed, screening equipment is needed to screen the graphite powder.

Through searching, patent publication No. CN107824426U discloses powder screening equipment for lithium battery production. The utility model aims to solve the technical problem of providing powder screening equipment for lithium battery production, which is ideal in screening. In order to solve the technical problems, the utility model provides powder screening equipment for lithium battery production, which comprises a bottom plate and the like; the bottom plate top bilateral symmetry is connected with first spring, and first spring top is connected with the installing frame, and the right part is equipped with controlling mobile device in the installing frame, and the installing frame top left side is opened there is the spout, and sliding connection has the slide bar in the spout, and slide bar lower part right side is connected with controlling mobile device left end, and the slide bar top is equipped with screening mechanism. According to the utility model, the big belt pulley drives the small belt pulley to rotate, so that the rotation speed is increased, the cam can rapidly push the mounting frame and the upper device thereof to shake up and down, and the screening efficiency is improved.

When the existing screening equipment screens lithium battery graphite powder, the situation that the other graphite powder cannot be effectively screened due to the fact that the large graphite powder is easily located at the bottom in the screening process of the lithium battery graphite powder occurs, the screening effect and the screening efficiency are reduced, and therefore the existing problem is solved by the powder screening equipment for lithium battery production.

Disclosure of Invention

The utility model aims to provide powder screening equipment for lithium battery production, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a powder screening equipment for lithium cell production, includes collection silo body and workstation, the screening cell body is installed on the top of collection silo body, the apron is installed on the top of screening cell body, the upper surface of apron passes through the bracing piece and is connected with the mounting panel, the last surface mounting of mounting panel has first gear motor, the output shaft of first gear motor runs through the surface of mounting panel and is connected with first pivot through the shaft coupling, the bottom of first pivot runs through the bearing on the apron surface and extends to the inside of screening cell body, the both sides of first pivot all are provided with the second pivot, the top of second pivot runs through the bearing on the apron surface and extends to outside and be connected with driven double-groove belt pulley, helical blade is all installed on the outer wall of first pivot and second pivot, first connecting plate and second connecting plate are all installed to the upper surface both sides of workstation, first connecting shaft and second connecting shaft are installed respectively in the bearing on first connecting plate and the second connecting plate terminal surface, the one end of first connecting shaft and second connecting shaft is all installed the bearing on the apron surface and extends to the inside of screening cell body, the inside is provided with the hollow rack, the hollow rack is installed to the top of the inside of a hollow rack, the hollow rack is installed to the top of the hollow rack, the hollow top is installed to the inside the hollow rack.

When the staff sieves lithium battery graphite powder, the staff installs the collection trough body to the top of cavity movable plate earlier, install screening trough body again behind the top of collecting trough body, the staff pours the lithium battery graphite powder that needs screening into screening trough body, the staff sieves the top of trough body with the apron, staff starts first gear motor and second gear motor, the second gear motor starts can indirect drive runner and rotates, when the second rack on the runner is connected with first rack meshing on cavity movable plate inner wall top and the bottom respectively, can make cavity movable plate carry out reciprocating motion in X axis direction, can indirect drive screening trough body carry out reciprocating motion in X axis direction when cavity movable plate carries out reciprocating motion in X axis direction, thereby can sieve the lithium battery graphite powder of screening trough body inside, the graphite powder of screening falls into inside the collecting trough body, first gear motor starts the spiral vane that can be indirect drive first pivot and second pivot outer wall rotates, spiral vane rotates can make the inside lithium battery powder of screening trough body carry the lithium battery reciprocating motion in X axis direction, the lithium battery graphite powder's the utility model is effectively improved and the lithium battery graphite powder that the lithium battery that is in the lithium battery that the lithium battery has not led to the utility model has improved the effect of the lithium battery that the lithium battery is in the big powder has the screening that the graphite powder takes place in the bottom of the great circumstances of the graphite powder.

Preferably, the driven double-groove belt pulley on the second rotating shaft is connected with the driving double-groove belt pulley on the first rotating shaft through a first transmission belt, the driving double-groove belt pulley is arranged on the outer wall of the first rotating shaft, and every two adjacent driven double-groove belt pulleys are connected through the first transmission belt.

Preferably, the four corners of the lower surface of apron all install first reference column, the other end of first reference column is installed in first locating hole, and is the gap connection between the outer wall of first reference column and the pore wall of first locating hole, first magnet piece is installed to the bottom of first reference column, install the second magnet piece in the first locating hole, be magnetic connection between first magnet piece and the second magnet piece, four corners in the top of screening cell body are seted up in first locating hole.

Preferably, the second reference column is installed at four corners in the bottom of screening cell body, the other end of second reference column is installed in the second locating hole, and is the gap connection between the outer wall of second reference column and the pore wall of second locating hole, the third magnet piece is installed to the bottom of second reference column, install the fourth magnet piece in the second locating hole, be magnetic connection between third magnet piece and the fourth magnet piece, the top four corners at the collection cell body is seted up in the second locating hole, all install first U type handle on the both sides outer wall of screening cell body.

Preferably, the third locating column is installed on the bottom both sides of the groove body gathers materials, the other end of third locating column is installed in the third locating hole, and be gap connection between the outer wall of third locating column and the pore wall of third locating hole, the fifth magnet piece is installed to the bottom of third locating column, install the sixth magnet piece in the third locating hole, be magnetic connection between fifth magnet piece and the sixth magnet piece, the top at the cavity movable plate is seted up in the third locating hole, all install the second U type handle on the both sides outer wall of groove body gathers materials.

Preferably, the second rack on the outer wall of the rotating wheel is in meshed connection with the first rack on the hollow moving plate, the other end of the first connecting shaft is connected with the second gear motor through a coupler, the second gear motor is arranged at the top end of the mounting seat, and the mounting seat is arranged on one side of the front end of the upper surface of the workbench.

Preferably, the outer walls of the first connecting shaft and the second connecting shaft are respectively provided with a driving single-groove belt pulley and a driven single-groove belt pulley, and the driving single-groove belt pulley is connected with the driven single-groove belt pulley through a second transmission belt.

Preferably, the bottom of cavity movable plate installs first slider, first slider installs the top at first slide rail, and is sliding connection between first slider and the first slide rail, first slide rail installs the upper surface both sides at the workstation.

Preferably, the front end and the rear end of the lower surface of the collecting tank body are connected with the second sliding block through connecting rods, the second sliding block is arranged at the top end of the second sliding rail, the second sliding block is in sliding connection with the second sliding rail, the second sliding rail is arranged at the front end and the rear end of the upper surface of the workbench, and supporting seats are arranged at four corners of the lower surface of the workbench.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, through the cooperation setting of a series of structures, when a worker sieves lithium battery graphite powder, the worker firstly installs the collecting tank body at the top end of the hollow movable plate, and then installs the sieving tank body at the top end of the collecting tank body, the worker pours lithium battery graphite powder to be sieved into the sieving tank body, the worker sieves the top end of the tank body by the cover plate, the worker starts the first gear motor and the second gear motor, the second gear motor starts the rotating wheel to indirectly drive the rotating wheel to rotate, when the second racks on the rotating wheel are respectively meshed with the first racks on the top end and the bottom end of the inner wall of the hollow movable plate, the hollow movable plate can be driven to reciprocate in the X-axis direction, the hollow movable plate can indirectly drive the sieving tank body to reciprocate in the X-axis direction, and therefore the lithium battery graphite powder in the sieving tank body can be sieved, the sieved graphite powder in the sieving tank body falls into the collecting tank body, the spiral blades on the outer wall of the first rotating shaft can indirectly drive the rotating blades on the outer wall of the first rotating shaft to rotate, and the spiral blades on the outer wall of the rotating shaft can be indirectly driven to rotate, and the lithium battery graphite powder can not be effectively sieved in the bottom of the lithium battery can effectively, and the lithium battery is effectively sieved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic view of the structure of the workbench of the utility model;

FIG. 4 is a schematic view of a partial enlarged structure at D in FIG. 3 according to the present utility model;

FIG. 5 is a schematic view of the structure of the present utility model shown in FIG. 2 at a partially enlarged scale;

FIG. 6 is a schematic view of a partial enlarged structure at B in FIG. 2 according to the present utility model;

fig. 7 is a schematic view of a partial enlarged structure at C in fig. 2 according to the present utility model.

In the figure: 1. a mounting plate; 2. a first gear motor; 3. a driving double-groove belt pulley; 4. a support rod; 5. a driven double groove pulley; 6. a first drive belt; 7. a cover plate; 8. a screening groove body; 9. a first U-shaped handle; 10. a collecting tank body; 11. a second U-shaped handle; 12. a work table; 13. a first slide rail; 14. a support base; 15. a first connection plate; 16. a second gear motor; 17. a mounting base; 18. a connecting rod; 19. a second slide rail; 20. a second slider; 21. a second rotating shaft; 22. a helical blade; 23. a first rotating shaft; 24. a second drive belt; 25. a first slider; 26. a second connecting plate; 27. screening filter holes; 28. a hollow moving plate; 29. a driven single groove pulley; 30. a first rack; 31. a third positioning hole; 32. a rotating wheel; 33. a second rack; 34. a driving single groove pulley; 35. a first connecting shaft; 36. a second connecting shaft; 37. a first positioning column; 38. a first positioning hole; 39. a first magnet block; 40. a second magnet block; 41. a second positioning column; 42. a second positioning hole; 43. a third magnet block; 44. a fourth magnet block; 45. a third positioning column; 46. a fifth magnet block; 47. and a sixth magnet block.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Example 1

As shown in fig. 1-7, the powder screening device for lithium battery production provided by the utility model comprises a material collecting tank body 10 and a workbench 12, wherein a screening tank body 8 is arranged at the top end of the material collecting tank body 10, a cover plate 7 is arranged at the top end of the screening tank body 8, a spiral blade 22 is arranged on the outer walls of the first rotating shaft 23 and the second rotating shaft 21, a first reducing motor 2 is arranged on the upper surface of the mounting plate 1, an output shaft of the first reducing motor 2 penetrates through the surface of the mounting plate 1 and is connected with a first rotating shaft 23 through a coupling, the bottom end of the first rotating shaft 23 penetrates through a bearing on the surface of the cover plate 7 and extends into the screening tank body 8, two sides of the first rotating shaft 23 are respectively provided with a second rotating shaft 21, the bearing on the surface of the second rotating shaft 21 extends to the outside and is connected with a driven double-groove belt pulley 5, a spiral blade 22 is arranged on the outer walls of the first rotating shaft 23 and the second rotating shaft 21, a first connecting plate 15 and a second connecting plate 26 are respectively arranged on two sides of the upper surface of the workbench 12, a first connecting shaft 35 and a second connecting shaft 36 are respectively arranged in bearings on the end faces of the first connecting plate 15 and the second connecting plate 26, a hollow rack plate 32 is respectively arranged at the bottom end of the first rotating shaft 28 and the hollow rotating shaft 28, and the hollow rotating wheel 32 is respectively arranged at the inner side 32, and the hollow rotating wheel 32 is respectively arranged at the top end of the hollow rotating wheel 32 is respectively, and the hollow rotating wheel 32 is respectively arranged at the inner end of the hollow rotating wheel 32, and the hollow rotating wheel 32 is respectively, and the hollow rotating wheel and the hollow device is provided with the hollow device, and the inside and the first rotating device, and the powder screening device.

The working principle of the powder screening equipment for lithium battery production based on the first embodiment is as follows: when the lithium battery graphite powder sieving machine is used, an external power supply is connected, when a worker sieves the lithium battery graphite powder, the worker firstly installs the collecting tank body 10 at the top end of the hollow movable plate 28, then installs the sieving tank body 8 at the top end of the collecting tank body 10, the worker pours the lithium battery graphite powder to be sieved into the sieving tank body 8, the worker starts the top end of the cover plate sieving tank body 8, the worker starts the first gear motor 2 and the second gear motor 16, the second gear motor 16 starts the indirectly driven rotating wheel 32 to rotate, when the second racks 33 on the rotating wheel 32 are respectively meshed with the first racks 30 on the top end and the bottom end of the inner wall of the hollow movable plate 28, the hollow movable plate 28 can make reciprocating motion in the X-axis direction, and the hollow movable plate 28 can indirectly drive the sieving tank body 8 to make reciprocating motion in the X-axis direction when the X-axis direction, the sieving tank body 8 makes reciprocating motion in the X-axis direction, so that the lithium battery graphite inside the sieving tank body 8 can be sieved, the graphite powder of the sieving tank body 10 falls into the inside, the first gear motor 2 starts the indirectly driven rotating wheel 32 to rotate, and when the second racks 33 on the inner wall of the hollow movable plate 28 is meshed with the first racks 30 on the inner wall of the hollow movable plate 28, the second racks is not driven by the spiral blades 22, and the graphite powder can be effectively rotated, and the effect of the graphite powder is prevented from being greatly improved, and the graphite powder can be effectively sieved, and the graphite powder can be transported to the graphite powder inside the lithium battery, and the graphite powder can be transported.

Example two

As shown in fig. 1 to 7, the powder sieving apparatus for lithium battery production according to the present utility model further includes: the driven double-groove belt pulley 5 on the second rotating shaft 21 is connected with the driving double-groove belt pulley 3 on the first rotating shaft 23 through the first driving belt 6, the driving double-groove belt pulley 3 is arranged on the outer wall of the first rotating shaft 23, every two adjacent driven double-groove belt pulleys 5 are connected through the first driving belt 6, the first positioning columns 37 are arranged at four corners of the lower surface of the cover plate 7, the other ends of the first positioning columns 37 are arranged in the first positioning holes 38, the outer wall of the first positioning columns 37 is in clearance connection with the hole wall of the first positioning holes 38, the bottom end of the first positioning columns 37 is provided with first magnet blocks 39, the first positioning holes 38 are internally provided with second magnet blocks 40, the first magnet blocks 39 are magnetically connected with the second magnet blocks 40, the first positioning holes 38 are arranged at four corners of the top end of the screening groove body 8, the four corners of the bottom end of the screening groove body 8 are provided with second positioning columns 41, the other end of the second positioning column 41 is arranged in the second positioning hole 42, the outer wall of the second positioning column 41 is in clearance connection with the hole wall of the second positioning hole 42, the bottom end of the second positioning column 41 is provided with a third magnet block 43, a fourth magnet block 44 is arranged in the second positioning hole 42, the third magnet block 43 and the fourth magnet block 44 are in magnetic connection, the second positioning hole 42 is arranged at four corners at the top end of the material collecting tank body 10, the outer walls at two sides of the sieving tank body 8 are respectively provided with a first U-shaped handle 9, the two sides at the bottom end of the material collecting tank body 10 are respectively provided with a third positioning column 45, the other end of the third positioning column 45 is arranged in the third positioning hole 31, the outer wall of the third positioning column 45 is in clearance connection with the hole wall of the third positioning hole 31, the bottom end of the third positioning column 45 is provided with a fifth magnet block 46, the inside of the third positioning hole 31 is provided with a sixth magnet block 47, the fifth magnet 46 is magnetically connected with the sixth magnet 47, the third positioning hole 31 is formed in the top end of the hollow moving plate 28, the second U-shaped handles 11 are mounted on the outer walls of two sides of the collecting tank body 10, the second racks 33 on the outer walls of the rotating wheels 32 are meshed with the first racks 30 on the hollow moving plate 28, the other end of the first connecting shaft 35 is connected with the second gear motor 16 through a shaft coupling, the second gear motor 16 is mounted on the top end of the mounting seat 17, the mounting seat 17 is mounted on one side of the front end of the upper surface of the workbench 12, the first connecting shaft 35 and the outer walls of the second connecting shaft 36 are respectively provided with the driving single-groove belt pulley 34 and the driven single-groove belt pulley 29, the driving single-groove belt pulley 34 is connected with the driven single-groove belt pulley 29 through the second transmission belt 24, the bottom end of the hollow moving plate 28 is provided with the first sliding block 25, the first sliding block 25 is mounted on the top end of the first sliding rail 13, the first sliding block 25 is connected with the first sliding rail 13, the two sides of the upper surface of the workbench 12 are mounted on the front end of the first sliding rail 13, the front surface of the collecting tank body 10 is connected with the second sliding rail 19 through the second connecting rod 20, the front end of the second sliding rail 19 is mounted on the front end of the second supporting seat 19, and the front end of the second sliding rail 19 is connected with the second sliding seat 19, and the front end of the second sliding rail 19 is mounted on the front end of the second sliding seat 19 is connected with the front end of the second sliding seat 19.

In this embodiment, since the four corners of the lower surface of the cover plate 7 are all provided with the first positioning column 37, the other end of the first positioning column 37 is installed in the first positioning hole 38, the outer wall of the first positioning column 37 is in gap connection with the hole wall of the first positioning hole 38, the bottom end of the first positioning column 37 is provided with the first magnet 39, the first positioning hole 38 is internally provided with the second magnet 40, the first magnet 39 is magnetically connected with the second magnet 40, so that the cover plate 7 is convenient for a worker to assemble and disassemble, the four corners of the bottom end of the screening groove 8 are provided with the second positioning column 41, the other end of the second positioning column 41 is installed in the second positioning hole 42, the outer wall of the second positioning column 41 is in gap connection with the hole wall of the second positioning hole 42, the bottom end of the second positioning column 41 is provided with the third magnet 43, the second positioning hole 42 is internally provided with the fourth magnet 44, the third magnet block 43 and the fourth magnet block 44 are magnetically connected, the second positioning hole 42 is arranged at four corners of the top end of the material collecting tank body 10, the first U-shaped handles 9 are arranged on the outer walls of the two sides of the sieving tank body 8, so that a worker can conveniently disassemble the sieving tank body 8, the third positioning column 45 is arranged on the two sides of the bottom end of the material collecting tank body 10, the other end of the third positioning column 45 is arranged in the third positioning hole 31, the outer wall of the third positioning column 45 is in gap connection with the wall of the third positioning hole 31, the fifth magnet block 46 is arranged at the bottom end of the third positioning column 45, the sixth magnet block 47 is arranged in the third positioning hole 31, the fifth magnet block 46 is magnetically connected with the sixth magnet block 47, the third positioning hole 31 is arranged at the top end of the hollow moving plate 28, the second U-shaped handles 11 are arranged on the outer walls of the two sides of the material collecting tank body 10, thereby be convenient for the staff to gather materials the cell body 10 and carry out dismouting operation, because of first slider 25 is installed to the bottom of cavity movable plate 28, first slider 25 installs on the top of first slide rail 13, and be sliding connection between first slider 25 and the first slide rail 13, thereby can play spacing guide's effect to the removal of cavity movable plate 28, stability when having strengthened cavity movable plate 28 and moving, because both ends all are connected with second slider 20 through connecting rod 18 around the cell body 10 lower surface gathers materials, the top at second slide rail 19 is installed to second slider 20, be sliding connection between second slider 20 and the second slide rail 19, thereby can play spacing guide's effect to the removal of cell body 10 gathers materials, thereby stability when having strengthened the cell body 10 that gathers materials and screening cell body 8 reciprocating motion.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. Powder screening equipment for lithium cell production, including collection silo body (10) and workstation (12), its characterized in that: the top of the material collecting tank body (10) is provided with a screening tank body (8), the top of the screening tank body (8) is provided with a cover plate (7), the upper surface of the cover plate (7) is connected with a mounting plate (1) through a supporting rod (4), the upper surface of the mounting plate (1) is provided with a first gear motor (2), an output shaft of the first gear motor (2) penetrates through the surface of the mounting plate (1) and is connected with a first rotating shaft (23) through a coupling, the bottom end of the first rotating shaft (23) penetrates through a bearing on the surface of the cover plate (7) and extends to the inside of the screening tank body (8), two sides of the first rotating shaft (23) are respectively provided with a second rotating shaft (21), the top end of the second rotating shaft (21) penetrates through the bearing on the surface of the cover plate (7) and is connected with a driven double-groove belt pulley (5), two sides of the upper surface of the workbench (12) are respectively provided with a first connecting plate (15) and a second connecting plate (26) and a first connecting plate (26) and a second connecting plate (35) respectively, the first connecting plate (26) and the second connecting plate (35) are respectively arranged on the two sides of the upper surface of the workbench (12), the utility model discloses a screening device, including first connecting axle (35) and second connecting axle (36), runner (32) are all installed to one end of first connecting axle (35) and second connecting axle (36), runner (32) set up the inboard at cavity movable plate (28), be provided with second rack (33) on the outer wall of runner (32), first rack (30) are all installed on the top and the bottom of cavity movable plate (28) inner wall, collection silo (10) are installed on the top of cavity movable plate (28), screening filtration pore (27) have been seted up to the bottom of screening cell body (8).

2. The powder screening device for lithium battery production according to claim 1, wherein: the driven double-groove belt pulley (5) on the second rotating shaft (21) is connected with the driving double-groove belt pulley (3) on the first rotating shaft (23) through a first transmission belt (6), the driving double-groove belt pulley (3) is arranged on the outer wall of the first rotating shaft (23), and every two adjacent driven double-groove belt pulleys (5) are connected through the first transmission belt (6).

3. The powder screening device for lithium battery production according to claim 1, wherein: the four corners of the lower surface of apron (7) are all installed first reference column (37), the other end of first reference column (37) is installed in first locating hole (38), and is the gap connection between the outer wall of first reference column (37) and the pore wall of first locating hole (38), first magnet piece (39) are installed to the bottom of first reference column (37), install second magnet piece (40) in first locating hole (38), be magnetic connection between first magnet piece (39) and second magnet piece (40), four corners in top of screening cell body (8) are seted up in first locating hole (38).

4. The powder screening device for lithium battery production according to claim 1, wherein: the screening groove body (8) is characterized in that a second positioning column (41) is arranged at four corners of the bottom end of the screening groove body (8), the other end of the second positioning column (41) is arranged in a second positioning hole (42), the outer wall of the second positioning column (41) is in clearance connection with the hole wall of the second positioning hole (42), a third magnet block (43) is arranged at the bottom end of the second positioning column (41), a fourth magnet block (44) is arranged in the second positioning hole (42), magnetic connection is arranged between the third magnet block (43) and the fourth magnet block (44), the second positioning hole (42) is arranged at four corners of the top end of the collecting groove body (10), and first U-shaped handles (9) are arranged on the outer walls of two sides of the screening groove body (8).

5. The powder screening device for lithium battery production according to claim 1, wherein: third locating column (45) are all installed to the bottom both sides of groove body that gathers materials (10), the other end of third locating column (45) is installed in third locating hole (31), and is gap connection between the outer wall of third locating column (45) and the pore wall of third locating hole (31), fifth magnet piece (46) are installed to the bottom of third locating column (45), install sixth magnet piece (47) in third locating hole (31), be magnetic connection between fifth magnet piece (46) and sixth magnet piece (47), the top at cavity movable plate (28) is seted up in third locating hole (31), second U type handle (11) are all installed on the both sides outer wall of groove body that gathers materials (10).

6. The powder screening device for lithium battery production according to claim 1, wherein: the second rack (33) on the outer wall of the rotating wheel (32) is in meshed connection with the first rack (30) on the hollow moving plate (28), the other end of the first connecting shaft (35) is connected with the second gear motor (16) through a coupler, the second gear motor (16) is installed at the top end of the installation seat (17), and the installation seat (17) is installed at one side of the front end of the upper surface of the workbench (12).

7. The powder screening device for lithium battery production according to claim 1, wherein: the outer walls of the first connecting shaft (35) and the second connecting shaft (36) are respectively provided with a driving single-groove belt pulley (34) and a driven single-groove belt pulley (29), and the driving single-groove belt pulley (34) is connected with the driven single-groove belt pulley (29) through a second transmission belt (24).

8. The powder screening device for lithium battery production according to claim 1, wherein: the bottom of cavity movable plate (28) is installed first slider (25), the top at first slide rail (13) is installed to first slider (25), and is sliding connection between first slider (25) and first slide rail (13), first slide rail (13) are installed in the upper surface both sides of workstation (12).

9. The powder screening device for lithium battery production according to claim 1, wherein: the utility model discloses a concrete mixing machine, including aggregate tank body (10), connecting rod (18), second slider (20), sliding connection, supporting seat (14) are all installed at the front and back both ends of workstation (12) upper surface, four corners of lower surface of workstation (12) to both ends all are connected through connecting rod (18) around aggregate tank body (10) lower surface, the top at second slide rail (19) is installed to second slider (20), be sliding connection between second slider (19) and second slide rail (19).