Anti-blocking screening device for lithium iron phosphate material processing

Abstract

The utility model discloses an anti-blocking screening device for lithium iron phosphate material processing, which belongs to the technical field of lithium iron phosphate material processing and comprises a screening box, a plurality of supporting springs are fixedly connected to the bottom of an inner cavity of the screening box, and a discharging hopper is fixedly connected to the top ends of the supporting springs. A plurality of lower supporting frames are fixedly connected to the top end of the discharging hopper. According to the lithium iron phosphate material screening device, the driving mechanism and the supporting spring are matched to drive the discharging hopper, the lower supporting frame and the lower screening frame to move up and down in a reciprocating mode, and the screening nets on the lower screening frame and the upper screening frame are used for screening lithium iron phosphate materials twice; in addition, the lithium iron phosphate materials which are not screened from the lower screen frame and the upper screen frame and the materials screened from the discharging hopper are discharged from the bottom ends of the lower screen frame, the upper screen frame and the discharging hopper respectively, so that the materials are conveniently received by an external receiving hopper, and the residual lithium iron phosphate is prevented from blocking the screen.

Description

Technical Field

[0001] This utility model relates to the field of lithium iron phosphate material processing technology, and more specifically, to an anti-clogging screening device for lithium iron phosphate material processing. Background Technology

[0002] Lithium iron phosphate is a lithium-ion battery electrode material characterized by its large capacity, low price, non-toxicity, and lack of environmental pollution. Due to its excellent performance, it has gained great favor in the new energy market. In the production process of lithium iron phosphate, it needs to be ground into granules by a mill and then screened by a screening device to ensure that the particle size of lithium iron phosphate is uniform.

[0003] A search revealed a utility model patent with publication number CN220461345U, which discloses an improved screening device for lithium iron phosphate. The device includes a material cylinder with a discharge funnel fixedly connected to its bottom. Two symmetrically arranged discharge ports are located on one side of the cylinder, and four symmetrically arranged rectangular slots are also located on the other side. This patent features high automation, simplicity, and solves the problem of material spraying in previous screening devices, reducing lithium iron phosphate waste. It also allows for real-time monitoring of screen damage, ensuring screen safety, effectively improving the pass rate of lithium iron phosphate products, and reducing material rework due to screen damage. However, the aforementioned patent has the following shortcomings: unscreened lithium iron phosphate is not easily discharged in a timely manner, and the remaining lithium iron phosphate can clog the screen, affecting screening efficiency; furthermore, screen replacement is inconvenient, making it difficult to separate lithium iron phosphate according to different size requirements. Therefore, we propose an anti-clogging screening device for lithium iron phosphate material processing. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an anti-clogging screening device for lithium iron phosphate material processing.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A clog-resistant screening device for processing lithium iron phosphate materials includes a screening box. Multiple support springs are fixedly connected to the bottom of the screening box's inner cavity. A discharge hopper is fixedly connected to the top of each support spring. Multiple lower support frames are fixedly connected to the top of each discharge hopper. A lower screen frame is fixedly connected to the top of each lower support frame. Multiple upper support frames are fixedly connected to the top of each lower screen frame. An upper screen frame is fixedly connected to the top of each upper support frame. A material leakage trough is provided at the bottom of both the lower and upper screen frames. A screening mechanism is provided on both the lower and upper screen frames. A feeding pipe is fixedly sleeved on the top of the screening box. A driving mechanism is provided at the bottom of the screening box's inner cavity. Multiple guide plates are fixedly connected to the inner walls of both the lower and upper screen frames.

[0007] As a preferred embodiment of this utility model, the screening mechanism includes slots and screw holes opened on the end face of the lower screen frame or the upper screen frame. The inner cavity of each slot is fitted with a screen. The end of the screen is fixedly connected to a mounting plate. The mounting plate has a mounting hole. The inner cavity of the mounting hole is fitted with a wing screw. The end of the wing screw is threaded into the inner cavity of the screw hole. The top surface of the screen and the bottom surface of the guide plate are in contact.

[0008] As a preferred embodiment of this utility model, the driving mechanism includes a dual-shaft motor fixedly installed at the bottom of the inner cavity of the screening box. The two output shafts of the dual-shaft motor are respectively fixedly connected to rotating rods through couplings. The ends of the two rotating rods are respectively rotatably connected to the screening box. Cams are fixedly sleeved on the outer sides of the two rotating rods, and the tops of the two cams are in contact with the bottom surface of the discharge hopper.

[0009] As a preferred embodiment of this utility model, a control panel is fixedly installed on the side of the screening box, and the control panel is electrically connected to the dual-shaft motor.

[0010] In a preferred embodiment of this utility model, the inner cavities of both the lower and upper screen frames are fixedly connected to limit blocks, the bottom end of the screen mesh is in contact with the side of the limit block, and the top surface of the limit block is flush with the top surface of the screen mesh.

[0011] As a preferred embodiment of this utility model, multiple sliding grooves are respectively opened on both sides of the screening box, and sliders are fixedly connected to the sides of the discharge hopper, the lower screen frame and the upper screen frame. The end of the slider is movably sleeved into the inner cavity of the sliding groove, and the side of the slider is in contact with the inner wall of the sliding groove.

[0012] In a preferred embodiment of this utility model, the width of the screen is equal to the width of the inner cavity of the lower screen frame and the upper screen frame, and the inner wall of the screening box is in contact with the sides of the discharge hopper, the lower screen frame, and the upper screen frame.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) In this utility model, the drive mechanism and the support spring are used to drive the discharge hopper, the lower support frame and the lower screen frame to move up and down repeatedly. The lithium iron phosphate material is screened twice by the screens on the lower screen frame and the upper screen frame. In addition, the lithium iron phosphate material that is not screened on the lower screen frame and the upper screen frame and the material screened on the discharge hopper are discharged from the bottom of the lower screen frame, the upper screen frame and the discharge hopper respectively, so as to be received by the external receiving hopper and to avoid the remaining lithium iron phosphate from clogging the screen.

[0015] (2) In this utility model, the screen is installed on the lower screen frame and the upper screen frame by means of the cooperation of slot, screw hole, screen, mounting plate, mounting hole and wing screw, so that the screen can be replaced and screens with different screen hole diameters can be selected to screen lithium iron phosphate materials. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the lower screen frame of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the screening box of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the screen of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Screening box; 2. Support spring; 3. Discharge hopper; 4. Lower support frame; 5. Lower screen frame; 6. Upper support frame; 7. Upper screen frame; 8. Discharge chute; 9. Limit block; 10. Screening mechanism; 11. Drive mechanism; 12. Slot; 13. Screw hole; 14. Screen; 15. Mounting plate; 16. Mounting hole; 17. Wing screw; 18. Dual-axis motor; 19. Rotating rod; 20. Cam; 21. Feeding pipe; 22. Slide chute; 23. Sliding block; 24. Guide plate; 25. Control panel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] Please see Figure 1-5 A clog-resistant screening device for lithium iron phosphate material processing includes a screening box 1. The device is characterized by: multiple support springs 2 fixedly connected to the bottom of the inner cavity of the screening box 1; a discharge hopper 3 fixedly connected to the top of the multiple support springs 2; multiple lower support frames 4 fixedly connected to the top of the discharge hopper 3; a lower screen frame 5 fixedly connected to the top of the multiple lower support frames 4; multiple upper support frames 6 fixedly connected to the top of the lower screen frame 5; an upper screen frame 7 fixedly connected to the top of the multiple upper support frames 6; a material leakage trough 8 provided at the bottom of both the lower screen frame 5 and the upper screen frame 7; a screening mechanism 10 provided on both the lower screen frame 5 and the upper screen frame 7; a feeding pipe 21 fixedly sleeved on the top of the screening box 1; a driving mechanism 11 provided at the bottom of the inner cavity of the screening box 1; and multiple guide plates 24 fixedly connected to the inner walls of both the lower screen frame 5 and the upper screen frame 7.

[0028] In this embodiment, the guide plate 24 is used to block the lithium iron phosphate on the screen 14, thereby increasing the residence time of the lithium iron phosphate on the screen 14 and ensuring the quality of screening.

[0029] For details, please refer to Figures 1 to 5 The screening mechanism 10 includes slots 12 and screw holes 13 opened on the end face of the lower screen frame 5 or the upper screen frame 7. The inner cavity of the slot 12 is fitted with a screen 14. The end of the screen 14 is fixedly connected to a mounting plate 15. The mounting plate 15 is provided with mounting holes 16. The inner cavity of the mounting hole 16 is fitted with a wing screw 17. The end of the wing screw 17 is threaded into the inner cavity of the screw hole 13. The top surface of the screen 14 and the bottom surface of the guide plate 24 are in contact.

[0030] In this embodiment, the top and bottom surfaces of the screen 14 are respectively fitted with the top and bottom surfaces of the inner cavity of the slot 12 to ensure the stability of the screen 14 installation.

[0031] For details, please refer to Figure 2The drive mechanism 11 includes a dual-shaft motor 18 fixedly installed at the bottom of the inner cavity of the screening box 1. The two output shafts of the dual-shaft motor 18 are respectively fixedly connected to rotating rods 19 through couplings. The ends of the two rotating rods 19 are respectively rotatably connected to the screening box 1. Cams 20 are fixedly sleeved on the outer side of the two rotating rods 19. The tops of the two cams 20 are in contact with the bottom surface of the discharge hopper 3.

[0032] In this embodiment, a dual-axis motor 18 drives a rotating rod 19 and a cam 20 to rotate, and the cam 20 pushes the discharge hopper 3, the lower screen frame 5 and the upper screen frame 7 to move up and down.

[0033] For details, please refer to Figure 1 and Figure 4 A control panel 25 is fixedly installed on the side of the screening box 1, and the control panel 25 is electrically connected to the dual-shaft motor 18.

[0034] In this embodiment, the dual-axis motor 18 is controlled by the control panel 25, and the dual-axis motor 18 and the control panel 25 are powered by the power supply of the external device.

[0035] For details, please refer to Figures 2 to 5 Limiting blocks 9 are fixedly connected to the inner cavities of the lower screen frame 5 and the upper screen frame 7. The bottom end of the screen 14 is in contact with the side of the limiting block 9, and the top surface of the limiting block 9 is flush with the top surface of the screen 14.

[0036] In this embodiment, the bottom end of the screen 14 is limited by the limiting block 9.

[0037] For details, please refer to Figure 1 Multiple sliding grooves 22 are provided on both sides of the screening box 1. Slider 23 is fixedly connected to the sides of the discharge hopper 3, the lower screen frame 5 and the upper screen frame 7. The end of the slider 23 is movably sleeved into the inner cavity of the sliding groove 22, and the side of the slider 23 is in contact with the inner wall of the sliding groove 22.

[0038] In this embodiment, the discharge hopper 3, lower screen frame 5 and upper screen frame 7 are limited by the cooperation of the slide groove 22 and the slider 23, so that the discharge hopper 3, lower screen frame 5 and upper screen frame 7 can only move up and down.

[0039] For details, please refer to Figures 1 to 5 The width of the screen 14 is equal to the width of the inner cavity of the lower screen frame 5 and the upper screen frame 7, and the inner wall of the screening box 1 is in contact with the sides of the discharge hopper 3, the lower screen frame 5, and the upper screen frame 7.

[0040] In this embodiment, the stability of the screen 14 set in the inner cavity of the lower screen frame 5 and the upper screen frame 7 is ensured, while the stability of the discharge hopper 3, the lower screen frame 5 and the upper screen frame 7 moving up and down is ensured by the inner wall of the screening box 1.

[0041] Working principle: In use, first select two screens 14 with suitable screen aperture diameters, and insert the two screens 14 into the slots 12 at the top of the lower screen frame 5 and the upper screen frame 7 respectively, so that the bottom end of the screen 14 contacts the end face of the limiting block 9, and at the same time, the inner side of the mounting plate 15 fits against the top surface of the lower screen frame 5 and the upper screen frame 7. At this time, insert the wing screw 17 into the inner cavity of the mounting hole 16, so that the end of the wing screw 17 is threaded into the inner cavity of the screw hole 13, thereby installing the required screens 14 on the lower screen frame 5 and the upper screen frame 7. Then, start the dual-shaft motor 18 to drive the rotating rod 19 and the cam 20 to rotate. The rotation of the cam 20 drives the discharge hopper 3, the lower support frame 4, the lower screen frame 5, the upper support frame 6, the upper screen frame 7 and the two screens 14 to move up and down. Next, lithium iron phosphate material is fed into the feed pipe 21, causing it to fall onto the screen 14 on the upper screen frame 7. The screen 14 vibrates up and down to perform primary screening of the lithium iron phosphate material. The screened lithium iron phosphate material falls onto the screen 14 on the lower screen frame 5. The lithium iron phosphate material that is not screened out in the inner cavity of the upper screen frame 7 falls from its bottom and is collected by an external receiving box. Finally, the screen 14 on the lower screen frame 5 screens the lithium iron phosphate material that was screened out in the first screening, causing it to fall onto the discharge hopper 3 for discharge. The lithium iron phosphate material that is not screened out on the lower screen frame 5 is discharged from its bottom and is collected by another receiving box.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A clog-resistant screening device for processing lithium iron phosphate materials, comprising a screening box (1), characterized in that: The bottom of the inner cavity of the screening box (1) is fixedly connected to a plurality of support springs (2), the top of the plurality of support springs (2) is fixedly connected to a discharge hopper (3), the top of the discharge hopper (3) is fixedly connected to a plurality of lower support frames (4), the top of the plurality of lower support frames (4) is fixedly connected to a lower screen frame (5), the top of the lower screen frame (5) is fixedly connected to a plurality of upper support frames (6), the top of the plurality of upper support frames (6) is fixedly connected to an upper screen frame (7), the bottom of the lower screen frame (5) and the upper screen frame (7) are both provided with a material leakage groove (8), the lower screen frame (5) and the upper screen frame (7) are both provided with a screening mechanism (10), the top of the screening box (1) is fixedly sleeved with a feeding pipe (21), the bottom of the inner cavity of the screening box (1) is provided with a driving mechanism (11), and the inner walls of the lower screen frame (5) and the upper screen frame (7) are both fixedly connected with a plurality of guide plates (24).

2. The anti-clogging screening device for lithium iron phosphate material processing according to claim 1, characterized in that: The screening mechanism (10) includes a slot (12) and a screw hole (13) on the end face of the lower screen frame (5) or the upper screen frame (7). The inner cavity of the slot (12) is fitted with a screen (14). The end of the screen (14) is fixedly connected to a mounting plate (15). The mounting plate (15) has a mounting hole (16). The inner cavity of the mounting hole (16) is fitted with a wing screw (17). The end of the wing screw (17) is threaded into the inner cavity of the screw hole (13). The top surface of the screen (14) and the bottom surface of the guide plate (24) are in contact.

3. The anti-clogging screening device for lithium iron phosphate material processing according to claim 2, characterized in that: The drive mechanism (11) includes a dual-shaft motor (18) fixedly installed at the bottom of the inner cavity of the screening box (1). The two output shafts of the dual-shaft motor (18) are respectively fixedly connected to rotating rods (19) through couplings. The ends of the two rotating rods (19) are respectively rotatably connected to the screening box (1). Cams (20) are fixedly sleeved on the outer side of the two rotating rods (19). The tops of the two cams (20) are in contact with the bottom surface of the discharge hopper (3).

4. The anti-clogging screening device for lithium iron phosphate material processing according to claim 3, characterized in that: A control panel (25) is fixedly installed on the side of the screening box (1), and the control panel (25) is electrically connected to the dual-axis motor (18).

5. The anti-clogging screening device for lithium iron phosphate material processing according to claim 4, characterized in that: The inner cavities of the lower sieve frame (5) and the upper sieve frame (7) are fixedly connected to limit blocks (9). The bottom end of the screen (14) is in contact with the side of the limit block (9), and the top surface of the limit block (9) is flush with the top surface of the screen (14).

6. The anti-clogging screening device for lithium iron phosphate material processing according to claim 1, characterized in that: Multiple sliding grooves (22) are provided on both sides of the screening box (1). The sides of the discharge hopper (3), the lower screen frame (5) and the upper screen frame (7) are all fixedly connected with sliders (23). The end of the slider (23) is movably sleeved into the inner cavity of the sliding groove (22). The side of the slider (23) is in contact with the inner wall of the sliding groove (22).

7. The anti-clogging screening device for lithium iron phosphate material processing according to claim 2, characterized in that: The width of the screen (14) is equal to the width of the inner cavity of the lower screen frame (5) and the upper screen frame (7), and the inner wall of the screening box (1) is in contact with the side of the discharge hopper (3), the lower screen frame (5) and the upper screen frame (7).

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