Screening equipment for lithium iron phosphate

Abstract

The screening equipment comprises a supporting frame, a barrel is fixedly arranged on the supporting frame, a cover plate is hinged to the upper side face of the barrel, a discharging opening is formed in the lower side of the barrel, a centrifugal barrel is rotationally arranged in the barrel, a plurality of discharging holes are evenly formed in the side wall of the centrifugal barrel, and a feeding opening is formed in the top of the centrifugal barrel. A supporting table is fixedly arranged in the barrel corresponding to the bottom of the centrifugal barrel, a rotating assembly for driving the centrifugal barrel to rotate is arranged in the supporting table corresponding to the centrifugal barrel, and a crushing structure penetrating into the centrifugal barrel and rotationally connected with the centrifugal barrel is arranged in the middle of the lower side of the cover plate; the centrifugal barrel is driven by the rotating assembly to rotate, so that lithium iron phosphate particles conforming to the size fly out of the discharging hole of the centrifugal barrel, and meanwhile, lithium iron phosphate in the centrifugal barrel is continuously crushed by matching with the crushing structure in the rotating process of the centrifugal barrel until the lithium iron phosphate passes through the discharging hole of the centrifugal barrel, so that the lithium iron phosphate is fully crushed and screened; and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium iron phosphate screening technology, specifically to a screening device for lithium iron phosphate. Background Technology

[0002] Lithium iron phosphate is an inorganic compound with a molecular formula. It is a gray, reddish-gray, brown, or black solid that is insoluble in water. This material has attracted attention as a component of lithium iron phosphate batteries. This battery chemical is mainly used in power tools, electric vehicles, and solar energy devices, and is also used in some educational laptops.

[0003] When lithium iron phosphate is used as a raw material for lithium batteries, in order to optimize its performance for use in new battery manufacturing, researchers have found that by precisely controlling the size of the pulverized lithium iron phosphate particles, it is possible to better meet specific application requirements. That is, by crushing the lithium iron phosphate particles into very fine particles through a pulverizer and classifier, the surface area can be increased and the utilization rate of the raw material can be improved.

[0004] Existing screening devices only screen lithium iron phosphate particles that meet the specified size during the screening process, while larger lithium iron phosphate particles need to be repeatedly crushed and screened again, which greatly increases the screening time. Utility Model Content

[0005] In view of the technical problems in the prior art, the present invention provides a screening device for lithium iron phosphate, the purpose of which is to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A screening device for lithium iron phosphate includes a support frame, a cylinder fixedly mounted on the support frame, a cover plate hinged to the upper side of the cylinder, a discharge port on the lower side of the cylinder, a centrifuge cylinder rotatably mounted inside the cylinder, a plurality of discharge holes evenly opened on the side wall of the centrifuge cylinder, a feeding port opened at the top of the centrifuge cylinder, a support platform fixedly mounted inside the cylinder corresponding to the bottom of the centrifuge cylinder, a rotating assembly for driving the centrifuge cylinder to rotate inside the support platform corresponding to the centrifuge cylinder, and a crushing structure extending into the centrifuge cylinder and rotatably connected to the centrifuge cylinder in the middle of the lower side of the cover plate.

[0008] Preferably, the rotating assembly includes a rotating motor fixedly disposed in the middle of the support platform, a horizontally disposed gear fixedly disposed at the drive end of the top of the rotating motor, and a toothed groove corresponding to the gear at the bottom of the centrifuge cylinder.

[0009] Preferably, the crushing structure includes a vertically arranged rotating rod, the lower end of which passes downward through the top of the centrifuge cylinder and is rotatably connected to the bottom of the centrifuge cylinder. The rotating rod is rotatably connected to the top of the centrifuge cylinder. The rotating rod is arranged in a ring array inside the centrifuge cylinder with multiple crushing plates. A limiting component is provided in the middle of the cover plate corresponding to the top of the rotating rod.

[0010] Preferably, the limiting component includes a limiting block disposed in the middle of the cover plate. The limiting block can be fixedly connected to the cover plate by bolts. The middle of the cover plate is provided with a placement groove corresponding to the limiting block. The bottom of the placement groove is provided with a clearance hole corresponding to the top of the rotating rod. The top of the rotating rod can be inserted into the placement groove through the clearance hole and engage with the limiting block.

[0011] Preferably, the top of the rotating rod is provided with a hexagonal prism, and the lower side of the limiting block is provided with a hexagonal slot that matches the hexagonal prism.

[0012] Preferably, the bottom of the cover plate is provided with an annular support block corresponding to the top of the centrifuge tube, and the bottom of the annular support block is provided with a plurality of rollers arranged in an annular array. The plurality of rollers abut against the top of the centrifuge tube and are rotatably connected to the annular support block.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model provides a screening device for lithium iron phosphate. A limiting block is installed on the upper side of the cover plate and fixed with bolts to limit the rotating rod. At this time, the rotation of the rotary motor drives the centrifuge drum to rotate, screening the lithium iron phosphate inside the centrifuge drum. The lithium iron phosphate particles of the correct size fly out from the discharge hole of the centrifuge drum and slide down the inner side wall of the drum to the discharge port, thus completing the screening. At the same time, during the rotation of the centrifuge drum, because the rotating rod is limited, the crushing plate continuously crushes the high-speed rotating lithium iron phosphate until it passes through the discharge port of the centrifuge drum, thus fully crushing and screening the lithium iron phosphate, greatly shortening the screening time and improving the screening efficiency. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of a screening device for lithium iron phosphate according to the present invention;

[0016] Figure 2 This is an enlarged view of section A of the screening equipment for lithium iron phosphate described in this utility model;

[0017] Figure 3 This is an enlarged view of section B of the screening equipment for lithium iron phosphate described in this utility model.

[0018] In the diagram: 1. Support frame; 2. Cylinder; 21. Cover plate; 22. Discharge port; 23. Clearance hole; 24. Annular support block; 25. Roller; 26. Placement groove; 3. Centrifuge cylinder; 31. Discharge port; 32. Feed port; 33. Gear groove; 4. Support platform; 5. Rotating assembly; 51. Rotating motor; 52. Gear; 6. Crushing structure; 61. Rotating rod; 62. Crushing plate; 63. Hexagonal prism; 7. Limiting assembly; 71. Limiting block; 72. Hexagonal slot. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 3 The embodiments proposed in this application are as follows: a screening device for lithium iron phosphate includes a support frame 1, a cylinder 2 fixedly mounted on the support frame 1, a cover plate 21 hinged to the upper side of the cylinder 2, a discharge port 22 provided on the lower side of the cylinder 2, a centrifuge cylinder 3 rotatably mounted inside the cylinder 2, a plurality of discharge holes 31 evenly opened on the side wall of the centrifuge cylinder 3, a feeding port 32 opened on the top of the centrifuge cylinder 3, a support platform 4 fixedly mounted inside the cylinder 2 corresponding to the bottom of the centrifuge cylinder 3, a rotating component 5 for driving the centrifuge cylinder 3 to rotate inside the support platform 4 corresponding to the centrifuge cylinder 3, and a crushing structure 6 that extends into the centrifuge cylinder 3 and is rotatably connected to the centrifuge cylinder 3 in the middle of the lower side of the cover plate 21.

[0021] Specifically, the centrifuge drum 3 is driven to rotate by the rotating component 5, and the lithium iron phosphate placed in the centrifuge drum 3 is centrifuged and screened. The lithium iron phosphate particles of the correct size fly out from the discharge hole 31 of the centrifuge drum 3 and slide down the inner wall of the drum 2 to the discharge port 22, thereby completing the screening. At the same time, the crushing structure 6 works in conjunction with the rotation of the centrifuge drum 3 to continuously crush the lithium iron phosphate in the centrifuge drum 3 until it passes through the discharge hole 31 of the centrifuge drum 3. This fully crushes and screens the lithium iron phosphate, greatly shortens the screening time, and improves the screening efficiency.

[0022] Further details can be found here. Figure 1The rotating assembly 5 includes a rotating motor 51 fixedly mounted in the middle of the support platform 4. A horizontally mounted gear 52 is fixedly mounted on the drive end of the top of the rotating motor 51. A toothed groove 33 is opened at the bottom of the centrifuge cylinder 3 corresponding to the gear 52. By rotating the rotating motor 51 in both directions (existing technology, not described in detail here), the centrifuge cylinder 3 is rotated to perform centrifugal work through the engagement of the gear 52 and the toothed groove 33. The lithium iron phosphate placed in the centrifuge cylinder 3 is centrifuged and screened, so that lithium iron phosphate particles of the correct size fly out from the discharge hole 31 of the centrifuge cylinder 3 and slide down the inner wall of the cylinder 2 to the discharge port 22, thereby completing the screening.

[0023] Further details can be found here. Figure 1 , 3 The crushing structure 6 includes a vertically arranged rotating rod 61. The lower end of the rotating rod 61 passes downward through the top of the centrifuge cylinder 3 and is rotatably connected to the bottom of the centrifuge cylinder 3. The rotating rod 61 is rotatably connected to the top of the centrifuge cylinder 3. The rotating rod 61 is located inside the centrifuge cylinder 3 and is provided with multiple crushing plates 62 in a ring array. The cover plate 21 is provided with a limiting component 7 at the top of the rotating rod 61 in the middle.

[0024] The limiting component 7 on the cover plate 21 limits the rotating rod 61 so that it will not rotate with the centrifuge cylinder 3 during its rotation. This allows the lithium iron phosphate particles inside the centrifuge cylinder 3 to continuously impact the crushing plate 62 until they reach the required size and fly out from the discharge hole 31. The rotating motor 51 rotates in both directions to prevent the lithium iron phosphate particles from continuously sticking to the inner wall of the centrifuge cylinder 3 when rotating in one direction.

[0025] Among them, see Figure 1 , 3 The limiting component 7 includes a limiting block 71 located in the middle of the cover plate 21. The limiting block 71 can be fixedly connected to the cover plate 21 by bolts. The middle of the cover plate 21 is provided with a placement groove 26 corresponding to the limiting block 71. The bottom of the placement groove 26 is provided with a clearance hole 23 corresponding to the top of the rotating rod 61. The top of the rotating rod 61 can be inserted into the placement groove 26 through the clearance hole 23 and engage with the limiting block 71. The top of the rotating rod 61 is provided with a hexagonal prism 63. The lower side of the limiting block 71 is provided with a hexagonal slot 72 that matches the hexagonal prism 63.

[0026] When the cover plate 21 is closed, the hexagonal prism 63 at the top of the rotating rod 61 will extend out from the clearance hole 23. At this time, the hexagonal slot 72 of the limiting block 71 is inserted into the hexagonal prism 63, and the limiting block 71 is fixed to the top of the cover plate 21 by bolts, thereby limiting the rotating rod 61 so that it will not rotate with the centrifuge 3 during its rotation.

[0027] Further details can be found here. Figure 1-2An annular support block 24 is provided at the bottom of the cover plate 21 corresponding to the top of the centrifuge cylinder 3. Multiple rollers 25 are arranged in an annular array at the bottom of the annular support block 24. The multiple rollers 25 abut against the top of the centrifuge cylinder 3 and are rotatably connected to the annular support block 24. This allows the centrifuge cylinder 3 to abut against the annular array of rollers 25 during rotation, making it more stable during centrifugation. At the same time, the rollers 25 will not affect the rotation of the centrifuge cylinder 3.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening device for lithium iron phosphate, comprising a support frame (1), a cylinder (2) fixedly mounted on the support frame (1), a cover plate (21) hinged to the upper side of the cylinder (2), and a discharge port (22) provided on the lower side of the cylinder (2), characterized in that: A centrifuge cylinder (3) is rotatably arranged inside the cylinder (2). Multiple discharge holes (31) are evenly opened on the side wall of the centrifuge cylinder (3). A feeding port (32) is opened on the top of the centrifuge cylinder (3). A support platform (4) is fixedly arranged inside the cylinder (2) corresponding to the bottom of the centrifuge cylinder (3). A rotating component (5) is provided inside the support platform (4) corresponding to the centrifuge cylinder (3) to drive its rotation. A crushing structure (6) is provided in the middle of the lower side of the cover plate (21) that extends into the centrifuge cylinder (3) and is rotatably connected to the centrifuge cylinder (3).

2. The screening equipment for lithium iron phosphate according to claim 1, characterized in that, The rotating assembly (5) includes a rotating motor (51) fixedly installed in the middle of the support platform (4). A horizontally arranged gear (52) is fixedly installed at the top drive end of the rotating motor (51), and a tooth groove (33) is opened at the bottom of the centrifuge (3) corresponding to the gear (52).

3. The screening equipment for lithium iron phosphate according to claim 1, characterized in that, The crushing structure (6) includes a vertically arranged rotating rod (61). The lower end of the rotating rod (61) passes downward through the top of the centrifuge cylinder (3) and is rotatably connected to the bottom of the centrifuge cylinder (3). The rotating rod (61) is rotatably connected to the top of the centrifuge cylinder (3). The rotating rod (61) is located in a ring array inside the centrifuge cylinder (3) with multiple crushing plates (62). The cover plate (21) is provided with a limiting component (7) at the top of the rotating rod (61) in the middle.

4. A screening device for lithium iron phosphate according to claim 3, characterized in that, The limiting component (7) includes a limiting block (71) located in the middle of the cover plate (21). The limiting block (71) can be fixedly connected to the cover plate (21) by bolts. The middle of the cover plate (21) is provided with a placement groove (26) corresponding to the limiting block (71). The bottom of the placement groove (26) is provided with a clearance hole (23) corresponding to the top of the rotating rod (61). The top of the rotating rod (61) can penetrate into the placement groove (26) through the clearance hole (23) and engage with the limiting block (71).

5. A screening device for lithium iron phosphate according to claim 4, characterized in that, The top of the rotating rod (61) is provided with a hexagonal prism (63), and the lower side of the limiting block (71) is provided with a hexagonal slot (72) that matches the hexagonal prism (63).

6. A screening device for lithium iron phosphate according to any one of claims 1-5, characterized in that, The bottom of the cover plate (21) is provided with an annular support block (24) corresponding to the top of the centrifuge tube (3). The bottom of the annular support block (24) is provided with a plurality of rollers (25) arranged in an annular array. The plurality of rollers (25) abut against the top of the centrifuge tube (3) and are rotatably connected to the annular support block (24).

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