Integrated system and equipment for crushing and screening lithium hexafluorophosphate powder

Abstract

The application discloses a kind of lithium hexafluorophosphate powder crushing screening integrated system and equipment, belong to lithium hexafluorophosphate powder crushing technical field, its technical scheme main point is, including control module, feeding module, crushing module, collection module and sealing module, lithium hexafluorophosphate powder is after preliminary screening by the feeding module and enters into the crushing module, the crushing module is crushed to lithium hexafluorophosphate powder, the collection module collects powder, the sealing module is sealed to whole system with nitrogen, the feeding module, the crushing module, the collection module and the sealing module are connected by pipeline between the module, the control module controls respectively with feeding module, crushing module, collection module and the sealing module connection.The device can reduce the load of crusher, and reduce the contact of lithium hexafluorophosphate powder and metal ions, improve the quality of lithium hexafluorophosphate and speed up work efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to a lithium hexafluorophosphate powder crushing technology field, in particular to a lithium hexafluorophosphate powder crushing and screening integrated system and equipment. BACKGROUND

[0002] Lithium hexafluorophosphate is a commonly used material in ion battery electrolyte, and when lithium hexafluorophosphate powder is crushed, the lithium hexafluorophosphate powder needs to be crushed to qualified particle size to degrade the acid content of lithium hexafluorophosphate, and metal ions cannot be brought in during crushing. However, the existing lithium hexafluorophosphate powder crushing and screening cannot greatly reduce the acid content, and part of the lithium hexafluorophosphate powder will adhere to the internal parts of the crusher and cannot be collected in time each time the crushing is performed, so that the content of metal ions in lithium hexafluorophosphate is greatly increased, which seriously affects the quality of lithium hexafluorophosphate and slows down the crushing speed and affects the work efficiency. In addition, since lithium hexafluorophosphate has high harm, the crusher needs to be sealed, therefore, a lithium hexafluorophosphate powder crushing and screening integrated system and equipment is needed. SUMMARY

[0003] In view of the problems in the prior art, the purpose of the present application is to provide a lithium hexafluorophosphate powder crushing and screening integrated system and equipment which can reduce the load of the crusher, reduce the contact between lithium hexafluorophosphate powder and metal ions, improve the quality of lithium hexafluorophosphate and speed up the work efficiency.

[0004] The above technical purpose of the present application is realized by the following technical scheme: a lithium hexafluorophosphate powder crushing and screening integrated system and equipment, comprising a control module, a feeding module, a crushing module, a collecting module and a sealing module, lithium hexafluorophosphate powder is fed into the crushing module after primary screening by the feeding module, the crushing module crushes the lithium hexafluorophosphate powder, the collecting module collects the powder, the sealing module seals the whole system with nitrogen, the feeding module, the crushing module, the collecting module and the sealing module are connected by pipelines, and the control module controls the connection of the feeding module, the crushing module, the collecting module and the sealing module.

[0005] In some embodiments, a dust removal module is further included, one end of the dust removal module is connected with the collecting module, the other end is connected with the sealing module, the dust removal module is controlled by the control module, the dust removal module comprises a bag-type dust collector, and a cover moving trolley is arranged at the upper portion of the bag-type dust collector.

[0006] In some embodiments, a water cooler is arranged between the crushing module and the sealing module.

[0007] In some embodiments, the feeding module comprises a feeding cylinder, a relevant air valve is arranged on the feeding cylinder, and a screw conveyor is arranged at the bottom of the feeding cylinder.

[0008] In some embodiments, an elastic sleeve is arranged at the upper inlet of the feeding cylinder.

[0009] In some embodiments, the crushing module comprises a crusher and a driving motor arranged on a support, the crusher is connected with the driving motor, the upper part of the crusher is provided with an outlet, the lower part is provided with an air inlet, and the middle part is provided with an inlet, and two spring push rods are arranged on the crusher.

[0010] In some embodiments, the crusher comprises a screening part and a collecting part, a protruding block is arranged on the collecting part, a grading mechanism is arranged in the upper part of the crusher, a crushing mechanism is arranged in the lower part of the crusher, a baffle is arranged in the crusher, the two spring push rods penetrate through the baffle, a guide ring is arranged on the inner side of the top of the collecting part, the grading mechanism comprises a driver, the end of the driver is provided with a grading wheel, the middle part of the driver is provided with a reed, the grading wheel can rotate with the driver and can also rotate independently, and the end of the reed is located in the internal area of the grading wheel.

[0011] In some embodiments, the crushing mechanism comprises a connecting shaft, a crushing disc is arranged on the connecting shaft, and a hammer head is arranged on the crushing disc.

[0012] In some embodiments, the collecting module comprises a cyclone collecting barrel and a material storage bin.

[0013] A lithium hexafluorophosphate powder crushing device using the above system.

[0014] In summary, the present application has the following advantages:

[0015] Firstly, the present application is provided with a feeding module, the overall height of the feeding cylinder is increased by the elastic sleeve at the inlet of the feeding cylinder, so that the feeding height is increased, the falling time of the lithium hexafluorophosphate powder is increased, the superfine powder particles are directly screened out from the lithium hexafluorophosphate powder, and the burden of the crusher is reduced.

[0016] Secondly, the present application is provided with a sealing module, the whole system is filled with nitrogen gas to form a closed nitrogen gas fluid circulation, so that the system is in a sealed state, and the safe crushing of the lithium hexafluorophosphate powder is ensured.

[0017] Thirdly, the lithium hexafluorophosphate powder is crushed and classified by the classification wheel and the crushing disc, the powder particles meeting the size requirement are separated from the powder particles not meeting the size requirement, the unqualified powder particles are continuously crushed, the powder attached to the classification wheel and the spring leaf is shaken and removed by the vibration of the spring leaf, thereby reducing the persistent contact of the lithium hexafluorophosphate powder with the crusher, the spring leaf is twisted by the classification wheel to be spiral-shaped, the collection and crushing speed of the lithium hexafluorophosphate powder is improved, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the feeding module of the application;

[0020] Figure 3 It is a schematic diagram of the overall structure of the crushing module of the application;

[0021] Figure 4 It is a first overall structure sectional view of the crushing module of the application;

[0022] Figure 5 It is a second overall structure sectional view of the crushing module of the application;

[0023] Figure 6 It is a first sectional view of the local structure of the crushing module of the application;

[0024] Figure 7 It is a second sectional view of the local structure of the crushing module of the application;

[0025] Figure 8 It is a movement flowchart of the lithium hexafluorophosphate powder of the application.

[0026] In the figure: 1, control module; 2, feeding module; 21, airlock valve; 22, discharging cylinder; 23, screw conveyor; 3, crushing module; 31, crusher; 311, screening part; 312, collection part; 3121, protruding block; 313, classification mechanism; 3131, driver; 3132, spring leaf; 3133, classification wheel; 314, crushing mechanism; 3141, connecting shaft; 3142, crushing disc; 315, baffle wall; 316, guide ring; 32, driving motor; 33, discharge port; 34, feeding port; 35, air inlet; 36, spring push rod; 4, collection module; 5, dust removal module; 6, sealing module; 7, water cooler. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0028] Referring to Figures 1-8 The integrated system and equipment for crushing and screening lithium hexafluorophosphate powder comprises a control module 1, a feeding module 2, a crushing module 3, a collecting module 4 and a sealing module 6. The lithium hexafluorophosphate powder is preliminarily screened by the feeding module 2 and then enters the crushing module 3. The crushing module 3 crushes the lithium hexafluorophosphate powder. The collecting module 4 collects the powder. The sealing module 6 seals the whole system with nitrogen. The feeding module 2, the crushing module 3, the collecting module 4 and the sealing module 6 are connected by pipelines. The control module 1 controls the feeding module 2, the crushing module 3, the collecting module 4 and the sealing module 6 respectively.

[0029] In some embodiments, a water cooler 7 is arranged between the crushing module 3 and the sealing module 6 to ensure the humidity balance and temperature control of the system.

[0030] In some embodiments, the feeding module 2 comprises a feeding cylinder 22. An air valve 21 is arranged on the feeding cylinder 22. A screw conveyor 23 is arranged at the bottom of the feeding cylinder 22. The feeding module 2 is externally provided with a material collecting cabin.

[0031] In some embodiments, the upper inlet of the feeding cylinder 22 is provided with a telescopic sleeve.

[0032] In some embodiments, the crushing module 3 comprises a crusher 31 and a driving motor 32 arranged on a support. The crusher 31 is connected with the driving motor 32. An outlet 33 is arranged at the upper part of the crusher 31. An air inlet 35 is arranged at the lower part of the crusher 31. An inlet 34 is arranged at the middle part of the crusher 31. Two spring push rods 36 are slidably connected to the crusher 31.

[0033] In some embodiments, the crusher 31 comprises a screening part 311 and a collecting part 312, the collecting part 312 is welded with a bump 3121, an upper part of the crusher 31 is provided with a grading mechanism 313, a lower part is provided with a crushing mechanism 314, the crusher 31 is fixedly connected with a baffle wall 315, the two spring push rods 36 all penetrate through the baffle wall 315, an inner side of a top of the collecting part 312 is welded with a guide ring 316, the grading mechanism 313 comprises a driver 3131, an end of the driver 3131 is provided with a grading wheel 3133, a middle part of the driver 3131 is provided with six reed pieces 3132, the grading wheel 3133 can rotate with the driver 3131 and can also rotate by itself, an end of the reed piece 3132 close to the grading wheel 3133 is inclined, and the end of the reed piece 3132 is located in an internal area of the grading wheel 3133.

[0034] In some embodiments, the crushing mechanism 314 comprises a connecting shaft 3141, the connecting shaft 3141 is provided with a crushing disc 3142, and the crushing disc 3142 is provided with a hammer head.

[0035] In some embodiments, the collecting module 4 comprises a cyclone collecting barrel and a material collecting bin, the material collecting bin is an external device and is located below the cyclone collecting barrel, and the cyclone collecting barrel and the material collecting bin are both prior arts and will not be described in detail here.

[0036] Working principle: when in use, the operator opens the whole system through the control module 1, the equipment in the system is coated with anti-paint, the operator pours the lithium hexafluorophosphate powder into the feeding cylinder 22 in the feeding module 2 through the external hopper, controls the collecting module 4 to collect, and controls the sealing module 6 to seal nitrogen, the sealing module 6 is composed of the existing fan and nitrogen valve, which prevents air from entering to affect the powder in the system and ensures the safe crushing of the lithium hexafluorophosphate powder, the inlet of the feeding cylinder 22 can increase the overall height of the feeding cylinder 22 through the telescopic pipe sleeve, so that the feeding height is increased, the falling time of the lithium hexafluorophosphate powder is increased, the telescopic sleeve is the existing corrugated telescopic pipe, then the lithium hexafluorophosphate powder is directly screened by the wind generated by the internal collecting module 4 and the sealing module 6 to remove the qualified superfine powder particles, so that the superfine powder particles directly enter the material collecting cabin, reducing the burden of the crusher 31, and the unqualified powder is transferred to the crusher 31 through the screw conveyor 23 after being discharged through the airlock valve 21, meanwhile, the airlock valve 21 can prevent airflow from backflowing, the method for conveying the lithium hexafluorophosphate powder to the crusher 31 is the existing technology, which will not be described in detail here, the unqualified lithium hexafluorophosphate powder enters the inside of the crusher 31 through the feeding port 34, part of it falls on the crushing disc 3142 and is crushed, and part of it is affected by the airflow of the air inlet 35 and moves to the collecting part 312 along the direction, enters the internal area of the baffle 315 after being guided by the guide ring 316, and contacts the rotating classifying wheel 3133, after being crushed by the classifying wheel 3133, the lithium hexafluorophosphate powder with small particle size is absorbed by the cyclone collecting barrel from the discharge port 33, and the lithium hexafluorophosphate powder with large particle size is thrown out by the classifying wheel 3133, collides with the baffle, and then falls on the crushing disc 3142 for further crushing, the crushing mechanism 314 is the existing technology, which will not be described in detail here, the above operation is repeated, that is, the crushing and screening of the lithium hexafluorophosphate powder are completed, when the classifying wheel 3133 is driven to rotate by the driver 3131, the reed 3132 is also driven to rotate, and the reed 3132 is continuously collided with the protrusion 3121 during the rotation, then the vibration effect of the reed 3132 is transmitted to the classifying wheel 3133, so that the classifying wheel 3133 has the vibration effect, which can shake off the lithium hexafluorophosphate powder adsorbed on the classifying wheel 3133 and the reed 3132, reduce the contact between the lithium hexafluorophosphate powder and metal ions, and at the same time, the end of the reed 3132 close to the classifying wheel 3133 is conical, which can avoid the small powder particles from being accumulated on the driver 3131 when being collected by the collecting module 4, the driver 3131 is a combination of a motor and a rotating shaft, which reduces the collection amount of the lithium hexafluorophosphate powder and causes continuous contact, since the classifying wheel 3133 can rotate with the driver 3131 and also can rotate by itself, the operator drives the classifying wheel 3133 to rotate by pressing the spring push rod 36, the classifying wheel 3133 drives the reed 3132 to twist,The six spring leaves 3132 are helically arranged around the driver 3131, and then the six spring leaves 3132 rotate under the driving of the driver 3131, and cooperate with the airflow generated by the collecting module 4 and the sealing module 6 to form a tornado-shaped airflow, which can not only improve the collection speed of the collecting module 4 and the collection amount of the lithium hexafluorophosphate powder, but also accelerate the contact between the lithium hexafluorophosphate powder and the grading wheel 3133, thereby improving the crushing efficiency, increasing the crushing speed of the lithium hexafluorophosphate powder, and improving the yield. Finally, the operator can press the other spring push rod 36 to reset the grading wheel 3133, and the spring leaf 3132 is also reset.

[0037] In some embodiments, a dust removal module is further included, the dust removal module 5 is connected to the collecting module 4 at one end and connected to the sealing module 6 at the other end, and the dust removal module 5 is controlled by the control module 1. The dust removal module includes a bag-type dust collector, a cover-moving trolley is arranged at the upper part of the bag-type dust collector, and the operator collects the lithium hexafluorophosphate powder through the bag-type dust collector in cooperation with the collecting module 4. The cover-moving trolley can control the opening and closing of the cover of the bag-type dust collector, and the operator can maintain the bag-type dust collector.

[0038] The quality of the circulating nitrogen is detected by an oxygen analyzer. When the oxygen is greater than 0.01%, the pipeline pneumatic valve is exhausted. When the nitrogen pressure is lower than 15KPa, the gas supplement pneumatic valve is actuated to supplement nitrogen.

[0039] The crushing mechanism is made of tungsten carbide, and the surface of the grading wheel is coated with tungsten carbide powder, which can reduce the content of metal ions in the crushing mechanism product, and the metal ions will not be exposed until the grading wheel is used for a long time. Therefore, the contact time between the metal ions of the grading wheel and the lithium hexafluorophosphate powder is delayed.

[0040] A lithium hexafluorophosphate powder crushing device using the above system.

[0041] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, as long as the modifications are within the scope of the claims of the present application.

Claims

1. A system for breaking and screening lithium hexafluorophosphate powder, characterized in that it comprises: The application relates to a lithium hexafluorophosphate powder processing system, which comprises a control module (1), a feeding module (2), a crushing module (3), a collecting module (4) and a sealing module (6), lithium hexafluorophosphate powder is preliminarily screened through the feeding module (2) and then enters the crushing module (3), the crushing module (3) crushes the lithium hexafluorophosphate powder, the collecting module (4) collects the powder, the sealing module (6) seals the whole system with nitrogen, the feeding module (2), the crushing module (3), the collecting module (4) and the sealing module (6) are connected through pipelines, and the control module (1) is connected with the feeding module (2), the crushing module (3), the collecting module (4) and the sealing module (6) respectively. The crushing module (3) comprises a crusher (31) and a driving motor (32) on a support, the crusher (31) is connected with the driving motor (32), the upper portion of the crusher (31) is provided with a discharge port (33), the lower portion is provided with an air inlet (35), and the middle portion is provided with a feeding port (34), and two spring push rods (36) are arranged on the crusher (31). The crusher (31) comprises a screening part (311) and a collecting part (312), the collecting part (312) is provided with a protruding block (3121), a grading mechanism (313) is arranged on the upper portion of the crusher (31), and a crushing mechanism (314) is arranged on the lower portion, a baffle (315) is arranged in the crusher (31), the two spring push rods (36) penetrate through the baffle (315), a guide ring (316) is arranged on the inner side of the top of the collecting part (312), the grading mechanism (313) comprises a driver (3131), the end portion of the driver (3131) is provided with a grading wheel (3133), the middle portion of the driver (3131) is provided with a reed (3132), the grading wheel (3133) can rotate with the driver (3131) and can also rotate by itself, and the end portion of the reed (3132) is located in the interior of the grading wheel (3133). The crushing mechanism (314) comprises a connecting shaft (3141), the connecting shaft (3141) is provided with a crushing disc (3142), and the crushing disc (3142) is provided with a hammer head.

2. The integrated system for breaking and screening lithium hexafluorophosphate powder according to claim 1, characterized in that: The application further comprises a dust removal module, one end of the dust removal module (5) is connected with the collecting module (4), the other end is connected with the sealing module (6), the dust removal module (5) is controlled by the control module (1), the dust removal module comprises a bag type dust collector, and the upper portion of the bag type dust collector is provided with a cover moving trolley.

3. The integrated system for breaking and screening lithium hexafluorophosphate powder according to claim 1, characterized in that: A water cooler (7) is arranged between the crushing module (3) and the sealing module (6).

4. The integrated system for breaking and screening lithium hexafluorophosphate powder according to claim 1, characterized in that: The feeding module (2) comprises a discharging cylinder (22), the discharging cylinder (22) is provided with an air valve (21), and the bottom of the discharging cylinder (22) is provided with a screw conveyor (23).

5. The integrated system for breaking and screening lithium hexafluorophosphate powder according to claim 4, characterized in that: The upper feeding port of the discharging cylinder (22) is provided with an elastic sleeve.

6. The integrated system for breaking and sizing lithium hexafluorophosphate powder according to claim 1, characterized in that: The collecting module (4) comprises a cyclone collecting barrel and a material collecting bin.

7. A lithium hexafluorophosphate powder breaking apparatus characterized by comprising: The application relates to a lithium hexafluorophosphate powder crushing and screening integrated system according to any one of claims 1-6.

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