Sieving and iron removing device for raw materials for lithium iron phosphate positive electrode material production

Abstract

The utility model discloses a sieving and deironing device for raw materials for producing lithium iron phosphate positive electrode materials, which comprises a dry-method full-automatic magnetic separator, the dry-method full-automatic magnetic separator comprises a magnetic cavity pipe and a magnetic conductive net group, and the magnetic conductive net group is placed at the middle section of the magnetic cavity pipe; the prompting assembly comprises a bottom plate, a telescopic rod, a fixed plate, a U-shaped movable rod and a plane pressure sensor, the fixed plate is fixed to the two sides of the top of the magnetic cavity pipe, one end of the telescopic rod is fixed to the middle of the lower portion of the fixed plate, the other end of the bottom plate is fixed to the side edge of the uppermost end of the bottom plate, and the lower end of the U-shaped movable rod is fixed to the bottom plate and fixed to the middle of the upper surface of the fixed plate. The utility model discloses a dry-method full-automatic magnetic separator, and aims to solve the problems that iron impurities are regularly discharged after an existing dry-method full-automatic magnetic separator is used for a period of time, but iron contents in each batch of minerals are different, and when the iron contents are relatively high, iron impurities are quickly accumulated on a magnetic conductive net group and are not cleaned in time, so that the screening efficiency is influenced.

Description

Technical Field

[0001] This utility model relates to the field of lithium iron phosphate cathode material technology, and in particular to a screening iron removal device for raw materials used in the production of lithium iron phosphate cathode materials. Background Technology

[0002] Lithium iron phosphate (LFP) is an important cathode material for lithium-ion batteries, possessing high energy density, long cycle life, and good safety performance. To improve battery performance and ensure battery safety, it is necessary to remove iron impurities from LFP. Existing iron removal devices include dry, fully automated magnetic separators. LFP powder is poured into the equipment and passes through a magnetic cavity. Iron impurities are adsorbed by a magnetic mesh, while the LFP is sieved out. Subsequently, the valve on the LFP discharge pipe is closed, another valve is opened, and the magnetic field power is turned off. The magnetic mesh loses its magnetism, and the iron impurities adsorbed on it are discharged from another discharge port.

[0003] Existing dry fully automatic magnetic separators typically require periodic removal of iron impurities after a period of use. However, the iron content varies in each batch of minerals. When the iron content is high, iron impurities accumulate rapidly on the magnetic mesh. If not cleaned in time, this will affect the screening efficiency. Therefore, it is necessary to provide a screening iron removal device for raw materials used in the production of lithium iron phosphate cathode materials to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a screening and iron removal device for raw materials used in the production of lithium iron phosphate cathode materials, in order to solve the problem mentioned in the background art. In the existing dry fully automatic magnetic separator, iron impurities are usually discharged periodically after a period of use. However, the iron content in each batch of minerals is different. When the iron content is high, iron impurities will quickly accumulate on the magnetic mesh. If not cleaned in time, it will affect the screening efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a screening and iron removal device for raw materials used in the production of lithium iron phosphate cathode materials, comprising:

[0007] A dry fully automatic magnetic separator, comprising a magnetic cavity tube and a magnetic mesh assembly, wherein the magnetic mesh assembly is placed in the middle section of the magnetic cavity tube;

[0008] The prompting component includes a base plate, a telescopic rod, a fixed plate, a U-shaped movable rod, and a planar pressure sensor. The fixed plate is fixed to both sides of the top of the magnetic cavity tube. One end of the telescopic rod is fixed to the middle of the lower part of the fixed plate, and the other end of the base plate is fixed to the uppermost side of the base plate. The lower end of the U-shaped movable rod is fixed to the middle of the upper surface of the base plate and the fixed plate.

[0009] Furthermore, the prompting component also includes limiting holes and rubber blocks. The limiting holes are opened at both ends of the fixed plate, and the U-shaped movable rod is inserted into the limiting holes. The rubber blocks are fixed on the top surface of the U-shaped movable rod.

[0010] Furthermore, the U-shaped movable rod is movably connected inside the limiting hole, and the rubber block is movably connected to the upper surface of the planar pressure sensor.

[0011] Furthermore, the dry fully automatic magnetic separator also includes a support base, a protective shell, and a discharge pipe. The support base is fixed to the ground, the protective shell is fixed to the upper end of the support base and wraps around the outside of the magnetic cavity tube, and the discharge pipe is fixed to the lower end of the magnetic cavity tube.

[0012] Furthermore, the dry fully automatic magnetic separator also includes a support plate and a spring. The support plate is fixed on the outer side of the upper end of the magnetic cavity tube, and the spring is fixed between the support plate and the support base.

[0013] Furthermore, it also includes a convenient component, which includes an L-shaped connecting plate, a through hole, and an adjusting rod. One end of the L-shaped connecting plate is fixed to the side of the fixed plate, and the other end is snapped into the top of the magnetic cavity tube. The through hole is opened on the side of the L-shaped connecting plate, and the adjusting rod is screwed into the through hole.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] I. This utility model, through the set prompt component, starts the equipment, the magnetic mesh group is magnetized to generate a strong magnetic field, the minerals are poured in from the magnetic cavity tube and fall onto the magnetic mesh group. The magnetic mesh group adsorbs iron impurities, and the remaining minerals are screened and fall downwards. As more and more minerals are input, more iron impurities fall onto the magnetic mesh group, the weight of the entire magnetic mesh group increases, and it drives the magnetic mesh group to move downwards, thereby stretching the telescopic rod. The U-shaped movable rod connected to the base plate moves downwards accordingly. When the rubber block at the top of the U-shaped movable rod contacts the plane pressure sensor above the fixed plate, the plane pressure sensor transmits a signal to the background control system, triggering an alarm, which can promptly discharge impurities. This setting can promptly discharge excessive impurities and avoid affecting the screening efficiency.

[0016] II. This utility model, through the convenient components, allows users to hold the L-shaped connecting plate and place the fixing plate and the magnetic mesh assembly below it into the magnetic cavity tube. By rotating the adjusting rod in the through hole until the adjusting rod is firmly against the outer wall of the magnetic cavity tube, this design facilitates the replacement of the maintenance reminder component and the magnetic mesh assembly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is a schematic diagram showing the connection between the prompting component and the magnetic mesh assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the prompting component and the convenience component of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 10. Support base; 11. Protective shell; 12. Discharge pipe; 13. Magnetic cavity tube; 14. Support plate; 15. Spring; 16. Magnetic mesh assembly; 20. Base plate; 21. Telescopic rod; 22. Fixing plate; 23. Limiting hole; 24. U-shaped movable rod; 25. Planar pressure sensor; 26. Rubber block; 30. L-shaped connecting plate; 31. Through hole; 32. Adjusting rod. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Please see Figure 1-4 As shown, this embodiment is a sieve iron removal device for raw materials used in the production of lithium iron phosphate cathode materials, comprising:

[0028] The dry fully automatic magnetic separator includes a magnetic cavity tube 13 and a magnetic mesh group 16, with the magnetic mesh group 16 placed in the middle section of the magnetic cavity tube 13.

[0029] The dry fully automatic magnetic separator also includes a support base 10, a protective shell 11, and a discharge pipe 12. The support base 10 is fixed on the ground, the protective shell 11 is fixed on the upper end of the support base 10 and wraps around the outside of the magnetic cavity tube 13, and the discharge pipe 12 is fixed on the lower end of the magnetic cavity tube 13.

[0030] The dry fully automatic magnetic separator also includes a support plate 14 and a spring 15. The support plate 14 is fixed on the outer side of the upper end of the magnetic cavity tube 13, and the spring 15 is fixed between the support plate 14 and the support base 10.

[0031] The support base 10 provides support, the protective shell 11 provides protection, and a coil is installed inside. When energized, it generates a magnetic field, which forms a high-density magnetic field in the magnetic cavity tube 13 through the magnetic circuit. The discharge pipe 12 is divided into a mineral discharge port and an iron discharge port. The magnetic cavity tube 13 provides support, and the support plate 14 is used to support the magnetic cavity tube 13. A weak vibration motor is installed on top, and the spring 15 facilitates the shaking of the support plate 14. The magnetic mesh group 16 is used to screen out iron impurities in the mineral.

[0032] The prompting component includes a base plate 20, a telescopic rod 21, a fixed plate 22, a U-shaped movable rod 24, and a planar pressure sensor 25. The fixed plate 22 is fixed on both sides of the top of the magnetic cavity tube 13. One end of the telescopic rod 21 is fixed to the middle of the lower part of the fixed plate 22. The base plate 20 is fixed to the other end of the telescopic rod 21, and the lower end of the base plate 20 is fixed to the uppermost side of the magnetic mesh group 16. The lower end of the U-shaped movable rod 24 is fixed to both ends of the upper surface of the base plate 20. The planar pressure sensor 25 is fixed to the middle of the upper surface of the fixed plate 22.

[0033] The prompting component also includes a limiting hole 23 and a rubber block 26. The limiting hole 23 is opened at both ends of the fixed plate 22, and the U-shaped movable rod 24 is inserted into the limiting hole 23. The rubber block 26 is fixed on the top surface of the U-shaped movable rod 24.

[0034] The U-shaped movable rod 24 is movably connected inside the limiting hole 23, and the rubber block 26 is movably connected to the upper surface of the planar pressure sensor 25;

[0035] The base plate 20 serves as a connector, the telescopic rod 21 allows for positional changes, the fixed plate 22 provides support, the limiting hole 23 provides a limiting function, the U-shaped movable rod 24 serves as a connector, the planar pressure sensor 25 is used to transmit pressure signals (model MPX2010 is optional), and the rubber block 26 serves as a connector.

[0036] Working principle:

[0037] When the equipment is started, the magnetic mesh group 16 is magnetized to generate a strong magnetic field. Minerals are poured in from the magnetic cavity tube 13 and fall onto the magnetic mesh group 16. The magnetic mesh group 16 adsorbs iron impurities, while the remaining minerals are screened and fall downwards. As more and more minerals are input, more iron impurities fall onto the magnetic mesh group 16, making the entire magnetic mesh group 16 heavier. This causes the magnetic mesh group 16 to move downwards, which in turn stretches the telescopic rod 21. The U-shaped movable rod 24 connected to the base plate 20 moves downwards accordingly. When the rubber block 26 at the top of the U-shaped movable rod 24 contacts the plane pressure sensor 25 above the fixed plate 22, the plane pressure sensor 25 transmits a signal to the background control system, triggering an alarm and allowing impurities to be discharged in time.

[0038] This step can remove excess impurities in a timely manner, avoiding affecting the screening efficiency.

[0039] Please see Figure 4 This embodiment, based on the above embodiments, further includes:

[0040] The convenient components include an L-shaped connecting plate 30, a through hole 31, and an adjusting rod 32. One end of the L-shaped connecting plate 30 is fixed to the side of the fixing plate 22, and the other end is snapped into the top of the magnetic cavity tube 13. The through hole 31 is opened on the side of the L-shaped connecting plate 30, and the adjusting rod 32 is screwed into the through hole 31.

[0041] The L-shaped connecting plate 30 serves a connecting function, the through hole 31 serves a connecting and adjusting function, and the adjusting rod 32 serves a fastening function.

[0042] Working principle:

[0043] Holding the L-shaped connecting plate 30, place the fixing plate 22 and the magnetic mesh group 16 below it into the magnetic cavity tube 13, and rotate the adjusting rod 32 in the through hole 31 until the adjusting rod 32 is firmly against the outer wall of the magnetic cavity tube 13.

[0044] This step facilitates the replacement of the maintenance reminder component and the magnetic mesh assembly 16.

[0045] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sieve iron removal device for raw materials used in the production of lithium iron phosphate cathode materials, characterized in that, include: A dry fully automatic magnetic separator, comprising a magnetic cavity tube (13) and a magnetic mesh group (16), wherein the magnetic mesh group (16) is placed in the middle section of the magnetic cavity tube (13); The prompting component includes a base plate (20), a telescopic rod (21), a fixed plate (22), a U-shaped movable rod (24), and a planar pressure sensor (25). The fixed plate (22) is fixed on both sides of the top of the magnetic cavity tube (13). One end of the telescopic rod (21) is fixed to the middle part below the fixed plate (22). The base plate (20) is fixed to the other end of the telescopic rod (21), and the lower end of the base plate (20) is fixed to the uppermost side of the magnetic mesh group (16). The lower end of the U-shaped movable rod (24) is fixed to both ends of the upper surface of the base plate (20). The planar pressure sensor (25) is fixed to the middle part of the upper surface of the fixed plate (22).

2. The iron removal device for raw materials used in the production of lithium iron phosphate cathode materials according to claim 1, characterized in that, The prompting component also includes a limiting hole (23) and a rubber block (26). The limiting hole (23) is opened at both ends of the fixing plate (22), and the U-shaped movable rod (24) is inserted into the limiting hole (23). The rubber block (26) is fixed on the top surface of the U-shaped movable rod (24).

3. The iron removal device for raw materials used in the production of lithium iron phosphate cathode materials according to claim 1, characterized in that, The U-shaped movable rod (24) is movably connected in the limiting hole (23), and the rubber block (26) is movably connected to the upper surface of the planar pressure sensor (25).

4. The iron removal device for raw materials used in the production of lithium iron phosphate cathode materials according to claim 1, characterized in that, The dry fully automatic magnetic separator also includes a support base (10), a protective shell (11), and a discharge pipe (12). The support base (10) is fixed on the ground, the protective shell (11) is fixed on the upper end of the support base (10) and wraps around the outside of the magnetic cavity tube (13), and the discharge pipe (12) is fixed on the lower end of the magnetic cavity tube (13).

5. The iron removal device for raw materials used in the production of lithium iron phosphate cathode materials according to claim 1, characterized in that, The dry fully automatic magnetic separator also includes a support plate (14) and a spring (15). The support plate (14) is fixed on the outer side of the upper end of the magnetic cavity tube (13), and the spring (15) is fixed between the support plate (14) and the support base (10).

6. The iron removal device for raw materials used in the production of lithium iron phosphate cathode materials according to claim 1, characterized in that, It also includes a convenient component, which includes an L-shaped connecting plate (30), a through hole (31) and an adjusting rod (32). One end of the L-shaped connecting plate (30) is fixed to the side of the fixed plate (22), and the other end is snapped into the top of the magnetic cavity tube (13). The through hole (31) is opened on the side of the L-shaped connecting plate (30), and the adjusting rod (32) is screwed into the through hole (31).

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