Graphite cathode material powder winnowing machine

Abstract

The utility model relates to the technical field of graphite powder winnowing devices, and discloses a graphite cathode material powder winnowing machine which comprises a winnowing barrel, a transition barrel is fixedly connected to the middle of the top end of the winnowing barrel, a feeding hopper is fixedly connected to the top end of the transition barrel, and a discharging barrel is fixedly connected to the middle of the bottom end of the winnowing barrel. A groove ring is fixedly connected to the middle of the outer wall of the discharging barrel, arc-shaped clamping plates are connected to the upper side of the outer wall of the discharging barrel through a plurality of stretching assemblies, a fan is fixedly connected to the inner wall of the left end of the winnowing barrel, a dust filtering cover is installed at the position, close to the outer side of the fan, of the left end of the winnowing barrel, and connecting lugs are fixedly connected to the right sides of the front end and the rear end of the dust filtering cover. The connecting lugs are connected with the winnowing barrel through limiting assemblies, and the right end of the winnowing barrel is fixedly connected with a slow air barrel. According to the powder collecting device, the clamping force of the arc-shaped clamping plates is improved, and the situation that powder collected in the collecting bag is too much, the mass is increased, and falling is caused is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite powder air separation devices, in particular to a graphite negative electrode material powder air separation machine. Background Art

[0002] In lithium-ion batteries, the main function of graphite as a negative electrode material is to store and release lithium ions during the charge and discharge process. The particle size of graphite powder has an important influence on battery performance. The particle size distribution of graphite powder can be controlled by air separation to ensure that it meets the requirements of battery manufacturing, thereby improving battery performance and stability.

[0003] After searching, a graphite negative electrode material powder air separation device with announcement number CN217830780U includes an air separation cylinder, a feeding cylinder is arranged on the upper part of the air separation cylinder, an intermittent feeding structure is installed at the feeding cylinder, the air inlet end and the air exhaust end of the air separation cylinder are respectively connected to the fan and the slow wind cylinder, a discharge trough is arranged at the bottom of the air separation cylinder, a discharge cylinder is arranged at the bottom of the discharge trough, a sealing structure is installed at the discharge cylinder, a fixing ring is fixedly installed on the outer side of the discharge cylinder, and the sealing structure includes multiple groups of clamping arc plates, which are elastically connected to the fixing ring through springs. The utility model fixes the collecting bag at the discharge cylinder through the clamping arc plates, and collects the air-separated powder through the collecting bag, thereby avoiding the problem that part of the powder may leak out from the gap between the discharge port of the sorting cylinder and the collecting trough during collection, thereby affecting the collection quality.

[0004] Based on the above patent, the collecting bag is fixed at the discharge barrel by multiple sets of clamping arc plates, and the air-selected powder is collected by the collecting bag, thereby avoiding the problem that part of the powder may leak out from the gap between the discharge port of the sorting barrel and the collecting trough during collection, thereby affecting the collection quality. However, in the above technology, the method of clamping the collecting bag only by relying on the cooperation of springs, guide rods and clamping arc plates is relatively unreliable. Once there is too much powder in the collecting bag, the mass increases and it is easy to fall off from the clamping arc plates. In addition, the fan concentrates the outside air to generate an airflow to blow toward the powder, and some dust in the air will mix with the powder along with the airflow, which will reduce the quality of the powder. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a graphite negative electrode material powder air separator, which improves the clamping strength of the arc clamping plate to avoid excessive powder collected inside the collecting bag, resulting in increased mass and falling.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A graphite negative electrode material powder air separator, comprising an air separator, a transition tube is fixedly connected to the middle of the top of the air separator, a feed hopper is fixedly connected to the top of the transition tube, a plurality of baffles are connected between the air separator and the transition tube through a gear set, a discharge tube is fixedly connected to the middle of the bottom of the air separator, a groove ring is fixedly connected to the middle of the outer wall of the discharge tube, arc-shaped clamping plates are connected to the upper side of the outer wall of the discharge tube through a plurality of extending components, a fan is fixedly connected to the inner wall of the left end of the air separator, a dust filter cover is installed on the left end of the air separator near the outside of the fan, connecting ears are fixedly connected to the right sides of the front and rear ends of the dust filter cover, the connecting ears are connected to the air separator through a limiting component, and a slow wind tube is fixedly connected to the right end of the air separator.

[0008] Furthermore, the extension component includes a support frame fixedly connected to the upper sides of the four ends of the outer wall of the discharge barrel, the inner wall of the bottom end of the support frame is rotatably connected to a threaded rod and passes through the inner and outer sides, the inner side of the outer wall of the threaded rod is threadedly connected to a threaded barrel, and the outward end of the arc-shaped clamping plate is fixedly connected to the inward end of the threaded barrel.

[0009] Furthermore, the gear group includes an electric push rod installed at the top of the air separation cylinder near the front right side of the transition cylinder and a plurality of rotating rods rotatably connected to the inner wall of the front end of the transition cylinder, the front and rear ends of the rotating rod respectively pass through the inner and outer sides of the transition cylinder, the front end of the rotating rod is fixedly connected to a spur gear, the driving end of the electric push rod is fixedly connected to a rack, and the bottom end of the outer diameter of the spur gear is meshed and connected to the top of the rack in sequence.

[0010] Furthermore, the limiting assembly includes a plug fixedly connected to both the front and rear sides of the dust filter cover at the left end of the air separation cylinder and a positioning rod rotatably connected to the left side of the air separation cylinder near the plug, and the limiting rod is fixedly connected to the left side of the outer wall of the positioning rod.

[0011] Furthermore, the radius of the inner end of the arc-shaped clamping plate is the same as the radius of the inner wall of the groove ring.

[0012] Furthermore, the rear end of the rotating rod is rotatably connected to the inner wall of the transition tube, and the inner wall of the baffle is fixedly connected to the rear side of the outer wall of the rotating rod.

[0013] Furthermore, the shape of the left end of the plug matches the shape of the inner wall of the through hole at the right end of the engagement ear.

[0014] Furthermore, the shape of the bottom of the opposite side of the outer wall of the limiting rod matches the shape of the inner wall of the slot at the top end of the plug.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, through the cooperation of the support frame, the threaded rod, the threaded barrel, the arc-shaped clamping plate and the groove ring, the limiting effect of the collection bag placed outside the discharge barrel can be strengthened, the clamping strength of the arc-shaped clamping plate can be improved, and the excess powder collected inside the collection bag can be avoided, resulting in an increase in mass and falling.

[0017] 2. In the utility model, the dust filter cover is restricted to the outside of the fan through the cooperation of the connecting ear, the plug, the positioning rod and the limit rod. When the fan is started to concentrate the external air to generate the airflow, the dust in the air is blocked on the filter screen of the dust filter cover to prevent the dust from mixing with the graphite powder and reducing the quality of the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a graphite negative electrode material powder air separator proposed in the utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a cross-sectional view of an air separator barrel of an air separator for graphite negative electrode material powder proposed in the utility model;

[0021] Figure 4 This is a half-section diagram of a transition tube of a graphite negative electrode material powder air separator proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of a discharge barrel of a graphite negative electrode material powder air separator proposed by the utility model;

[0023] Figure 6 The utility model provides a cross-sectional view of a threaded barrel of a graphite negative electrode material powder air separator.

[0024] Legend:

[0025] 1. Air separation cylinder; 2. Transition cylinder; 3. Feed hopper; 4. Rack; 5. Electric push rod; 6. Spur gear; 7. Dust filter cover; 8. Slow air cylinder; 9. Plug; 10. Connecting ear; 11. Limit rod; 12. Positioning rod; 13. Fan; 14. Discharge cylinder; 15. Rotating rod; 16. Baffle; 17. Support frame; 18. Groove ring; 19. Threaded cylinder; 20. Arc clamping plate; 21. Threaded rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-6 The utility model provides an embodiment: a graphite negative electrode material powder air separator, comprising an air separator 1, a transition tube 2 is fixedly connected to the middle of the top of the air separator 1, a feed hopper 3 is fixedly connected to the top of the transition tube 2, graphite powder is poured into the feed hopper 3 for storage, a discharge tube 14 is fixedly connected to the middle of the bottom of the air separator 1, a groove ring 18 is fixedly connected to the middle of the outer wall of the discharge tube 14, and then a collection bag is put on the groove ring 18, a fan 13 is fixedly connected to the inner wall of the left end of the air separator 1, the fan 13 is started to blow air into the air separator 1, a dust filter 7 is installed on the left end of the air separator 1 near the outer side of the fan 13, and a dust filter 7 is installed on the fan 13. Before the external air flow is sucked in and blown to the air separation cylinder 1, the air flow will pass through the filter part of the dust filter hood 7 to block the dust in the air flow outside the dust filter hood 7, so as to prevent the dust from entering the air separation cylinder 1 with the wind from the fan 13 and mixing with the powder, thereby affecting the quality of the powder. Connecting ears 10 are fixedly connected to the right sides of the front and rear ends of the dust filter hood 7, and a slow air cylinder 8 is fixedly connected to the right end of the air separation cylinder 1. The powder will be screened under the blowing of the fan 13. The larger ones will fall into the collection bag from the discharge cylinder 14, and the lighter ones will be discharged from the slow air cylinder 8 with the air flow. In actual work, a collecting bucket can be placed on one side of the slow air cylinder 8 to collect the powder.

[0028] Specifically, the upper sides of the four ends of the outer wall of the discharge barrel 14 are fixedly connected to the support frame 17, the inner wall of the bottom end of the support frame 17 is rotatably connected with a threaded rod 21 and passes through the inner and outer sides, the inner side of the outer wall of the threaded rod 21 is threadedly connected with a threaded barrel 19, the outer end of the arc clamping plate 20 is fixedly connected to the inner end of the threaded barrel 19, the radius of the inner end of the arc clamping plate 20 is the same as the radius of the inner wall of the groove ring 18, the outer knob of the threaded rod 21 is turned in turn to rotate the threaded rod 21, and the threaded barrel 19 is restricted by the top vertical rod and the inner wall of the top end of the support frame 17. The threaded slides inward on one side and pushes the arc clamping plate 20 into the groove of the groove ring 18, and at the same time clamps and fixes one side of the collecting bag, thereby increasing the clamping strength of the arc clamping plate 20 to avoid excessive powder collected inside the collecting bag, which increases the mass and causes it to fall off.

[0029] Specifically, an electric push rod 5 is installed at the top of the air separation cylinder 1 near the front right side of the transition cylinder 2, and several rotating rods 15 are rotatably connected to the inner wall of the front end of the transition cylinder 2. The front and rear ends of the rotating rod 15 respectively pass through the inner and outer sides of the transition cylinder 2. The front end of the rotating rod 15 is fixedly connected to a spur gear 6, and the rear end of the rotating rod 15 is rotatably connected to the inner wall of the transition cylinder 2. The inner walls of the baffles 16 are fixedly connected to the rear side of the outer wall of the rotating rod 15. The driving end of the electric push rod 5 is fixedly connected to a rack 4, and the bottom end of the outer diameter of the spur gear 6 is meshed and connected to the top of the rack 4 in sequence. Starting the electric push rod 5 pushes the rack 4 to move back and forth left and right, thereby making several spur gears 6 rotate forward and reverse, and then making the rotating rod 15 drive the baffle 16 to rotate forward and reverse. When the baffle 16 rotates, there is a gap between adjacent baffles 16, and the powder will fall into the air separation cylinder 1. When the baffle 16 is reset and kept horizontal, the powder is blocked in the transition cylinder 2, thereby realizing intermittent feeding.

[0030] Specifically, the plug 9 is fixedly connected to the front and rear sides of the left end of the air separation cylinder 1 near the dust filter cover 7, and the positioning rod 12 is rotatably connected to the left end of the air separation cylinder 1 near the opposite side of the plug 9. The shape of the left end of the plug 9 is consistent with the shape of the inner wall of the through hole at the right end of the connecting ear 10. The left side of the outer wall of the positioning rod 12 is fixedly connected to the limiting rod 11, and the shape of the bottom of the opposite side of the outer wall of the limiting rod 11 is consistent with the shape of the inner wall of the slot at the top of the plug 9. After completing the air separation work, the limiting rods 11 on both sides are respectively rotated to disengage from the top slot of the plug 9, and then the connecting ear 10 and the dust filter cover 7 are directly detached from the outer wall of the plug 9, so that the filter screen part of the dust filter cover 7 can be cleaned separately.

[0031] Working principle: First, pour the graphite powder into the feed hopper 3 for storage, then put the collecting bag between the groove ring 18 and the threaded barrel 19, and then turn the outer knob of the threaded rod 21 in turn to rotate the threaded rod 21. Under the restriction of the top vertical rod and the inner wall of the top of the support frame 17, the threaded barrel 19 slides inward on one side and pushes the arc clamping plate 20 into the groove of the groove ring 18. At the same time, one side of the collecting bag is clamped and fixed, and then the fan 13 is started to blow air into the air separation cylinder 1. Before the fan 13 sucks the external airflow into the air separation cylinder 1, the airflow will pass through the filter part of the dust filter 7 to block the dust in the airflow outside the dust filter 7, so as to prevent the dust from entering the air separation cylinder 1 with the air blown by the fan 13 and mixing with the powder, thereby affecting the quality of the powder. The rack is pushed by starting the electric push rod 5. 4 reciprocates left and right, thereby making several spur gears 6 rotate forward and reverse, and then making the rotating rod 15 drive the baffle plate 16 to rotate forward and reverse. When the baffle plates 16 rotate, there are gaps between adjacent baffle plates 16, and the powder will fall into the air separation cylinder 1. When the baffle plate 16 is reset and kept horizontal, the powder will be blocked in the transition cylinder 2, thereby realizing intermittent feeding, and the powder falling into the air separation cylinder 1 will be screened under the blowing of the fan 13, and the larger mass will fall from the discharge cylinder 14 into the collection bag, and the lighter mass will be discharged from the slow air cylinder 8 with the air flow. After completing the air separation work, the limit rods 11 on both sides are rotated respectively to disengage from the top slot of the plug 9, and then the connecting ear 10 and the dust filter cover 7 are directly disengaged from the outer wall of the plug 9, so that the filter screen part of the dust filter cover 7 can be cleaned separately.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A graphite negative electrode material powder air separator, comprising an air separator (1), characterized in that: The middle of the top of the air separation cylinder (1) is fixedly connected to a transition cylinder (2), the top of the transition cylinder (2) is fixedly connected to a feed hopper (3), a plurality of baffles (16) are connected between the air separation cylinder (1) and the transition cylinder (2) via a gear set, a discharge cylinder (14) is fixedly connected to the middle of the bottom of the air separation cylinder (1), a groove ring (18) is fixedly connected to the middle of the outer wall of the discharge cylinder (14), and a plurality of grooves (18) are fixedly connected to the upper side of the outer wall of the discharge cylinder (14). The extending components are all connected with an arc-shaped clamping plate (20), the inner wall of the left end of the air separation cylinder (1) is fixedly connected with a fan (13), a dust filter cover (7) is installed at the left end of the air separation cylinder (1) close to the outside of the fan (13), the right sides of the front and rear ends of the dust filter cover (7) are fixedly connected with connecting ears (10), the connecting ears (10) and the air separation cylinder (1) are connected through a limit assembly, and the right end of the air separation cylinder (1) is fixedly connected with a slow wind cylinder (8).

2. The graphite negative electrode material powder air separator according to claim 1, characterized in that: The extending assembly comprises a support frame (17) fixedly connected to the upper sides of the four ends of the outer wall of the discharge barrel (14); the inner wall of the bottom end of the support frame (17) is rotatably connected to a threaded rod (21) and passes through both inner and outer sides; the inner side of the outer wall of the threaded rod (21) is threadedly connected to a threaded barrel (19); and the outer end of the arc clamping plate (20) is fixedly connected to the inner end of the threaded barrel (19).

3. The graphite negative electrode material powder air separator according to claim 1, characterized in that: The gear set comprises an electric push rod (5) installed at the top end of the air separation cylinder (1) near the right front part of the transition cylinder (2) and a plurality of rotating rods (15) rotatably connected to the inner wall of the front end of the transition cylinder (2), the front and rear ends of the rotating rod (15) respectively penetrate the inner and outer sides of the transition cylinder (2), the front end of the rotating rod (15) is fixedly connected to a spur gear (6), the driving end of the electric push rod (5) is fixedly connected to a rack (4), and the outer diameter bottom end of the spur gear (6) is meshed and connected to the top end of the rack (4) in sequence.

4. The graphite negative electrode material powder air separator according to claim 1, characterized in that: The limiting assembly comprises a plug (9) fixedly connected to both the front and rear sides of the left end of the air separation cylinder (1) near the dust filter cover (7) and a positioning rod (12) rotatably connected to the left end of the air separation cylinder (1) near the opposite side of the plug (9), and the left side of the outer wall of the positioning rod (12) is fixedly connected to the limiting rod (11).

5. The graphite negative electrode material powder air separator according to claim 1, characterized in that: The radius of the inward end of the arc-shaped clamping plate (20) is the same as the radius of the inner wall of the groove ring (18).

6. The graphite negative electrode material powder air separator according to claim 3, characterized in that: The rear end of the rotating rod (15) is rotatably connected to the inner wall of the transition tube (2), and the inner wall of the baffle (16) is fixedly connected to the rear side of the outer wall of the rotating rod (15).

7. The graphite negative electrode material powder air separator according to claim 4, characterized in that: The shape of the left end of the plug (9) matches the shape of the inner wall of the through hole at the right end of the engagement ear (10).

8. The graphite negative electrode material powder air separator according to claim 4, characterized in that: The shape of the bottom of the opposite side of the outer wall of the limiting rod (11) matches the shape of the inner wall of the slot at the top end of the plug (9).

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