Lithium hexafluorophosphate crystal screening and crushing device

Abstract

The utility model relates to the technical field of lithium hexafluorophosphate crystal screening and crushing, in particular to a lithium hexafluorophosphate crystal screening and crushing device which comprises a bin body and a net piece arranged in the bin body, the net piece divides the interior of the bin body into a material screening chamber and a blast chamber located below the material screening chamber, and a screening net is arranged at the input end of the material screening chamber. The screening net is arranged on the bin body and located over the net piece, the air blowing chamber is provided with a rotatable hollow pipe, the hollow pipe communicates with an air blowing pipe with the output end facing the net piece, the net piece for containing the screened lithium hexafluorophosphate crystals is arranged on the bin body, the driving assembly is used for driving the hollow pipe to rotate, and therefore the lithium hexafluorophosphate crystals can be screened. The air blowing pipe and the discharging scraping plate are driven to do circular motion with the axis of the hollow pipe as the circle center, the discharging scraping plate pushes the lithium hexafluorophosphate crystals to move and turn over, the air blowing pipe acts wind power on the surfaces of the lithium hexafluorophosphate crystals on the upper end face of the net piece and blows up dust attached to the surfaces, and therefore the problem is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium hexafluorophosphate crystal screening and crushing, in particular to a lithium hexafluorophosphate crystal screening and crushing device. Background Art

[0002] Lithium hexafluorophosphate crystal is an important inorganic compound, mainly used as an electrolyte material for lithium-ion batteries. Lithium hexafluorophosphate is widely used in lithium-ion batteries, which can improve the energy density and cycle life of the batteries. However, during the use of lithium hexafluorophosphate crystal, it is necessary to screen and crush it because lithium hexafluorophosphate is the main lithium salt in the lithium-ion battery electrolyte, and its purity and particle size have a significant impact on the battery performance.

[0003] However, when screening and crushing lithium hexafluorophosphate crystal, a certain number of lithium hexafluorophosphate crystals are crushed into uniformly sized particles. However, during the crushing process of lithium hexafluorophosphate crystal, small particle dust with a smaller volume will inevitably be generated. These fine particle dusts will adhere to the surface of the uniform particles, fall off with the screening, and finally be applied. These particle dusts will have a certain impact on the use effect of lithium hexafluorophosphate crystal.

[0004] Based on the above situation, it is necessary to design a lithium hexafluorophosphate crystal screening and crushing device to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a lithium hexafluorophosphate crystal screening and crushing device to solve the problem of dust adhesion in the screening and crushing of lithium hexafluorophosphate crystal in the prior art.

[0006] The technical problems solved by the utility model are realized by the following technical solutions:

[0007] A lithium hexafluorophosphate crystal screening and crushing device includes a bin body and a mesh member arranged inside the bin body. The mesh member divides the interior of the bin body into a screening chamber and a blowing chamber located below the screening chamber. The input end of the screening chamber is provided with a screening mesh, and the screening mesh is located directly above the mesh member. The blowing chamber is provided with a rotatable hollow tube, and a blowing pipe with an output end facing the mesh member is communicated with the hollow tube. The bin body is provided with a wind supply assembly for supplying wind to the hollow tube. A discharge scraper is rotatably connected in the screening chamber, and the discharge scraper is in contact with the upper end surface of the mesh member. The bin body is provided with a driving assembly for driving the hollow tube and the discharge scraper to rotate.

[0008] Preferably, the air supply assembly includes an air pump I installed on the bin body, an annular pipe fixedly connected to the outer side wall of the bin body, and an air guide pipe sealingly and rotatably connected to the input end of the hollow pipe. The input end of the air guide pipe communicates with the annular pipe, and the input end of the annular pipe communicates with the output end of the air pump I.

[0009] Preferably, a plurality of air direction pipes are provided on the inner side wall of the screening chamber. The input ends of the air direction pipes extend to the outside of the screening chamber and communicate with the annular pipe. The output ends of the air direction pipes face the inside of the screening chamber and are inclined towards the boundary of the screening mesh.

[0010] Preferably, a dust suction pipe is rotatably connected inside the screening chamber and near the screening mesh. Both ends of the dust suction pipe penetrate through the side wall of the screening chamber and extend to the outside. An air suction pipe is provided on the outer side wall of the bin body. Both ends of the air suction pipe are sealingly and rotatably connected to both ends of the dust suction pipe respectively. An air pump II is provided on the output end of the air suction pipe.

[0011] Preferably, a driven gear is fixedly connected to one end of the dust suction pipe. An electric motor II is installed on the outer side wall of the bin body. The output end of the electric motor II is connected with a driving gear, and the driving gear meshes with the driven gear.

[0012] Preferably, a cleaning plate is fixedly connected inside the screening chamber and is in contact with the outer surface of the dust suction pipe.

[0013] Preferably, the driving assembly includes a driven bevel gear fixedly connected to the end of the hollow pipe far from the mesh member, a driving shaft rotatably connected to the side wall of the air blowing chamber, a driving bevel gear fixedly connected to one end of the driving shaft, and an electric motor I installed outside the bin body. The output end of the electric motor I is connected to the end of the driving shaft far from the driving bevel gear. The driving bevel gear meshes with the driven bevel gear. The discharge scraper is fixedly connected to the end of the hollow pipe far from the driven bevel gear.

[0014] The beneficial effects of the present utility model are as follows: By connecting a bin body to the output end of the lithium hexafluorophosphate crystal crushing equipment, and a mesh member for holding the screened lithium hexafluorophosphate crystal is provided on the bin body. The driving assembly is used to drive the hollow pipe to rotate, and then drive the air blowing pipe and the discharge scraper to perform circular motion around the axis of the hollow pipe. Among them, the discharge scraper pushes and turns the lithium hexafluorophosphate crystal. The air blowing pipe acts on the surface of the lithium hexafluorophosphate crystal on the upper end surface of the mesh member with wind force and blows up the dust attached thereto. The discharge scraper discharges the cleaned lithium hexafluorophosphate crystal from the discharge port. During this process, the dust attached to the lithium hexafluorophosphate crystal is greatly reduced, avoiding the influence on the subsequent application of the lithium hexafluorophosphate crystal. Description of the Drawings

[0015] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the present utility model Figure 1 :

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the present utility model Figure 2 :

[0018] Figure 3 Schematic diagram of the internal structure of the screening chamber of the present utility model:

[0019] Figure 4 Schematic diagram of the isometric sectional structure of the present utility model;

[0020] Figure 5 Of the present utility model Figure 4 Enlarged schematic diagram of the structure at position A;

[0021] Figure 6 Schematic diagram of the internal structure of the bin body of the present utility model Figure 1 ;

[0022] Figure 7 Schematic diagram of the internal structure of the bin body of the present utility model Figure 2 ;

[0023] Figure 8 Schematic diagram of the air blowing pipe and the hollow pipe structure of the present utility model;

[0024] Figure 9 Schematic diagram of the dust suction pipe structure of the present utility model.

[0025] In the figure, 1, bin body; 2, screening chamber; 3, air blowing chamber; 4, mesh member; 5, screening mesh; 6, hollow pipe; 7, air blowing pipe; 8, discharge scraper; 9, air pump 1; 10, annular pipe; 11, air guide pipe; 12, air direction pipe; 13, dust suction pipe; 14, air suction pipe; 15, air pump 2; 16, driven gear; 17, motor 2; 18, driving gear; 19, cleaning plate; 20, driven bevel gear; 21, driving shaft; 22, driving bevel gear; 23, motor 1; 24, discharge port; 25, dust suction hole. Detailed implementation manners

[0026] In order to make the technical means, creative features, achieved objectives and functions realized by the present utility model easy to understand, the present utility model will be further described below with reference to specific illustrations.

[0027] Referring to Figures 1-9 As shown, the lithium hexafluorophosphate crystal screening and crushing device includes a bin body 1 and a mesh member 4 provided inside the bin body 1. The input end of the bin body 1 is connected to a device (not shown in the figure) for crushing lithium hexafluorophosphate crystals. The input end of the bin body 1 is used to receive the crushed lithium hexafluorophosphate crystals. A screening mesh 5 for screening lithium hexafluorophosphate crystals is provided at the input end of the bin body 1, which blocks the lithium hexafluorophosphate crystals with uneven particles and not meeting the size requirements outside the bin body 1 and does not allow them to enter. The screening mesh 5 has the prior art features, and its main function is to screen the lithium hexafluorophosphate crystals, and no redundant description will be made here. The mesh member 4 located inside the bin body 1 divides the inside of the bin body 1 into a screening chamber 2 and a blowing chamber 3 located below the screening chamber 2. The screening mesh 5 is located directly above the mesh member 4, that is, at the input end position of the bin body 1. A rotatable hollow tube 6 is provided in the blowing chamber 3, and a blowing pipe 7 with an output end facing the mesh member 4 is connected to the hollow tube 6. A wind supply assembly for supplying wind to the hollow tube 6 is provided on the bin body 1. A discharge scraper 8 is rotatably connected in the screening chamber 2, and the discharge scraper 8 is in contact with the upper end surface of the mesh member 4. A drive assembly for driving the rotation of the hollow tube 6 and the discharge scraper 8 is provided on the bin body 1. And a discharge port 24 is provided on the side wall of the screening chamber 2 for discharging the lithium hexafluorophosphate crystals located on the mesh member 4.

[0028] Specifically, the above-mentioned mesh member 4 has the prior art feature structure, and the mesh member 4 with a corresponding mesh size can be customized according to the size of the lithium hexafluorophosphate crystals. Its main function is to allow air wind to pass through while not allowing lithium hexafluorophosphate crystals to pass through, so as to cooperate with the blowing pipe 7 for use.

[0029] During the use of the above structure, the main function realized is that when the uniform lithium hexafluorophosphate crystal falls from the screening mesh 5 onto the mesh part 4, the driving component drives the hollow tube 6 to rotate, and then drives the air blowing pipe 7 and the discharging scraper 8 to perform circular motion around the axis of the hollow tube 6. Among them, under the wind supply of the air supply component, the air blowing pipe 7 blows out wind from its output end, and this wind acts on the lower end surface of the mesh part 4. Under the characteristics of the mesh part 4, this wind passes through the mesh part 4 and acts on the surface of the lithium hexafluorophosphate crystal located on the upper end surface of the mesh part 4. Moreover, the air blowing pipe 7 performing circular motion can uniformly act the wind on the mesh part 4, and then act on the surface of the lithium hexafluorophosphate crystal. While the air blowing pipe 7 is performing circular motion, the discharging scraper 8 synchronously performs circular motion. The discharging scraper 8 pushes the lithium hexafluorophosphate crystal located on the upper end surface of the mesh part 4. During the pushing process, several lithium hexafluorophosphate crystals will turn over, and the dust attached to the lithium hexafluorophosphate crystal will be intermittently exposed to the wind force of the air blowing pipe 7. Under the blowing of the air, the dust will break away from the surface of the lithium hexafluorophosphate crystal and be blown into the air of the screening chamber 2. The arc shape of the discharging scraper 8 can gradually push the cleaned lithium hexafluorophosphate crystal towards the discharging port 24 during rotation. Finally, the lithium hexafluorophosphate crystal is discharged from the discharging port 24.

[0030] Among them, the air supply component includes an air pump 1 9 installed on the bin body 1, an annular pipe 10 fixedly connected to the outer side wall of the bin body 1, and an air guide pipe 11 sealingly and rotatably connected to the input end of the hollow tube 6. The input end of the air guide pipe 11 is communicated with the annular pipe 10, and the input end of the annular pipe 10 is communicated with the output end of the air pump 1 9. The air pump 1 9 blows external air into the annular pipe 10 to form air pressure. The high-pressure air is then introduced into the hollow tube 6 under the action of the air guide pipe 11, and then introduced into the air blowing pipe 7 and blown out from the output end of the air blowing pipe 7. In order to enhance the blowing effect on the lithium hexafluorophosphate crystal on the mesh part 4, several air blowing pipes 7 can be arranged on the hollow tube 6.

[0031] The driving component includes a driven bevel gear 20 fixedly connected to the end of the hollow tube 6 far from the mesh part 4, a driving shaft 21 rotatably connected to the side wall of the air blowing chamber 3, a driving bevel gear 22 fixedly connected to one end of the driving shaft 21, and a motor 1 23 installed outside the bin body 1. The output end of the motor 1 23 is connected to the driving shaft 21 far from the driving bevel gear 22. The driving bevel gear 22 meshes with the driven bevel gear 20. The discharging scraper 8 is fixedly connected to the end of the hollow tube 6 far from the driven bevel gear 20. Starting the motor 1 23 drives the driving shaft 21 to rotate, and then drives the driving bevel gear 22 to rotate, and then drives the driven bevel gear 20 meshing with it to rotate. The driven bevel gear 20 drives the hollow tube 6 to rotate, and then drives the air blowing pipe 7 to perform circular motion around the axis of the hollow tube 6.

[0032] Refer toFigure 1 and Figure 3 As shown, further, in order to enhance the blowing effect on the dust on the lithium hexafluorophosphate crystal, a number of wind direction pipes 12 are provided on the inner side wall of the screening chamber 2. The input end of the wind direction pipe 12 extends to the outside of the screening chamber 2 and is connected to the annular pipe 10. After the air pump 9 blows air into the annular pipe 10, a part of the wind force will be blown out from the output end of the wind direction pipe 12. The output end of the wind direction pipe 12 faces the inside of the screening chamber 2 and is inclined towards the boundary of the screening mesh 5. And under the condition of wind force transportation, rotating air is formed. After the dust on the lithium hexafluorophosphate crystal is blown up by the air duct 7, with the cooperation of the wind direction pipe 12, the dust will be blown up towards the top of the screening chamber 2. And during the blowing process, the dust will rotate and rise in the screening chamber 2.

[0033] Referring to Figure 6 As shown, further, during the process of the dust rotating and rising in the screening chamber 2, in order to extract the dust from the screening chamber 2, a dust suction pipe 13 is rotatably connected at a position in the screening chamber 2 and close to the screening mesh 5. Both ends of the dust suction pipe 13 penetrate through the side wall of the screening chamber 2 and extend to the outside. An air suction pipe 14 is provided on the outer side wall of the bin body 1. Both ends of the air suction pipe 14 are hermetically and rotatably connected to both ends of the dust suction pipe 13. An air pump 15 is provided at the output end of the air suction pipe 14. During use, the air pump 15 extracts the air inside the dust suction pipe 13 through the air suction pipe 14 and forms a negative pressure inside the dust suction pipe 13. When the rotating dust passes through the dust suction pipe 13, it is sucked into the dust suction pipe 13 through the dust suction holes 25 and is led out of the screening chamber 2 by the air suction pipe 14. The dust suction holes 25 are sized according to actual use requirements.

[0034] Referring to Figure 3 As shown, a driven gear 16 is fixedly connected to one end of the dust suction pipe 13. A second motor 17 is installed on the outer side wall of the bin body 1. The output end of the second motor 17 is connected to a driving gear 18. The driving gear 18 meshes with the driven gear 16. A cleaning plate 19 is fixedly connected inside the screening chamber 2. The cleaning plate 19 is in contact with the outer surface of the dust suction pipe 13. When the second motor 17 is started to drive the driving gear 18 to rotate, the driven gear 16 rotates accordingly. The driven gear 16 drives the dust suction pipe 13 to rotate. And when the dust suction pipe 13 rotates, the outer surface of the dust suction pipe 13 rubs against the cleaning plate 19. The cleaning plate 19 can remove the dust adsorbed on the outer surface of the dust suction pipe 13. And the removed dust, under the blowing of the wind force and the suction of the dust suction pipe 13, is re-extracted from the screening chamber 2 by the dust suction pipe 13.

[0035] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium hexafluorophosphate crystal screening and crushing device, comprising a bin body (1) and a mesh member (4) arranged inside the bin body (1), wherein the mesh member (4) divides the inside of the bin body (1) into a screening chamber (2) and a blast chamber (3) located below the screening chamber (2), a screening net (5) is provided at the input end of the screening chamber (2), and the screening net (5) is located directly above the mesh member (4), characterized in that: The blast chamber (3) is provided with a rotatable hollow tube (6), the hollow tube (6) is connected to a blast tube (7) with an output end facing the mesh (4), the silo (1) is provided with an air supply component for providing wind force to the hollow tube (6), a discharging scraper (8) is rotatably connected in the screening chamber (2), and the discharging scraper (8) is in contact with the upper end surface of the mesh (4), and a driving component for driving the hollow tube (6) and the discharging scraper (8) to rotate is provided on the silo (1).

2. The lithium hexafluorophosphate crystal screening and crushing device according to claim 1, characterized in that: The air supply assembly comprises an air pump (9) mounted on the bin body (1), an annular tube (10) fixedly connected to the outer wall of the bin body (1), and an air guide tube (11) sealingly and rotatably connected to the input end of the hollow tube (6), the input end of the air guide tube (11) being connected to the annular tube (10), and the input end of the annular tube (10) being connected to the output end of the air pump (9).

3. The lithium hexafluorophosphate crystal screening and crushing device according to claim 2, characterized in that: A plurality of wind direction tubes (12) are provided on the inner wall of the screening chamber (2); the input ends of the wind direction tubes (12) extend to the outside of the screening chamber (2) and are connected to the annular tube (10); and the output ends of the wind direction tubes (12) face the inside of the screening chamber (2) and are inclined toward the boundary of the screening net (5).

4. The lithium hexafluorophosphate crystal screening and crushing device according to claim 1, characterized in that: A dust suction pipe (13) is rotatably connected in the screening chamber (2) and at a position close to the screening net (5); both ends of the dust suction pipe (13) penetrate the side wall of the screening chamber (2) and extend to the outside; an air suction pipe (14) is provided on the outer wall of the bin body (1); both ends of the air suction pipe (14) are respectively rotatably connected to both ends of the dust suction pipe (13); and an air pump (15) is provided at the output end of the air suction pipe (14).

5. The lithium hexafluorophosphate crystal screening and crushing device according to claim 4, characterized in that: A driven gear (16) is fixedly connected to one end of the dust suction pipe (13); a second motor (17) is mounted on the outer wall of the bin body (1); an output end of the second motor (17) is connected to a driving gear (18); and the driving gear (18) is meshed with the driven gear (16).

6. The lithium hexafluorophosphate crystal screening and crushing device according to claim 4, characterized in that: A cleaning plate (19) is fixedly connected to the interior of the screening chamber (2), and the cleaning plate (19) is in contact with the outer surface of the dust suction pipe (13).

7. The lithium hexafluorophosphate crystal screening and crushing device according to claim 2, characterized in that: The driving assembly comprises a driven bevel gear (20) fixedly connected to an end of the hollow tube (6) away from the mesh member (4), a driving shaft (21) rotatably connected to the side wall of the blast chamber (3), a driving bevel gear (22) fixedly connected to one end of the driving shaft (21), and a motor 1 (23) mounted outside the bin body (1), wherein the output end of the motor 1 (23) is connected to the driving shaft (21) away from the driving bevel gear (22), the driving bevel gear (22) is meshed with the driven bevel gear (20), and the discharging scraper (8) is fixedly connected to an end of the hollow tube (6) away from the driven bevel gear (20).

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