Drawing type lithium iron phosphate grinding and sieving device

Abstract

The utility model discloses a drawing type lithium iron phosphate grinding and sieving device, and relates to the technical field of lithium iron phosphate production equipment. The screening device sequentially comprises a feeding part, a grinding part, a screening part, a discharging part and a supporting base from top to bottom, the screening part comprises an outer shell and at least one screening plate, the screening plate is detachably embedded in the outer shell, the outer shell is provided with an installation groove communicated with the outside, the front end and the rear end of the screening plate are embedded in the installation groove in a vertically-movable mode, and the supporting base is provided with a feeding port and a discharging port. The mounting groove is rotationally provided with a supporting piece abutting against the bottom of the screening plate. Therefore, when the sieving plate is replaced, the old sieving plate can slide downwards after the supporting effect of the supporting piece is relieved, then another new sieving plate is installed on the outer shell, the old sieving plate is pulled out, and residual lithium iron phosphate powder on the old sieving plate is treated, so that the sieving effect of the sieving plate can be ensured in the replacement process, and the replacement efficiency is improved. Shutdown and feeding stopping are not needed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium iron phosphate production equipment, in particular to a pull-out type lithium iron phosphate grinding and screening device. Background Art

[0002] Lithium iron phosphate is a compound commonly used as anode material for lithium-ion batteries. It is widely used due to its high safety, long cycle life, non-toxicity and environmental protection. In the production process of lithium iron phosphate, grinding and screening is an important process to ensure that the particle size distribution of lithium iron phosphate powder is uniform, thereby improving the performance of the battery.

[0003] When the screen is covered with lithium iron phosphate powder that cannot pass through, the screen needs to be replaced or the lithium iron phosphate powder on the screen needs to be manually cleaned. Otherwise, as the lithium iron phosphate powder continues to fall, the screen will be completely blocked and lose its screening function. However, when replacing the screen, the existing lithium iron phosphate screening device needs to shut down the entire device and stop feeding, and then restart the device after replacing the screen, which has low working efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a pull-out type lithium iron phosphate grinding and screening device in order to solve the above-mentioned problem.

[0005] The technical solution of the utility model is achieved in this way:

[0006] The utility model provides a pull-out type lithium iron phosphate grinding and screening device, which comprises a feeding part, a grinding part, a screening part, a discharging part and a supporting base from top to bottom, wherein the screening part comprises an outer shell and at least one screening plate, the screening plate is detachably embedded in the outer shell, the outer shell is provided with a mounting groove connected to the outside, and the front and rear ends of the screening plate are movably embedded in the mounting groove up and down, and the mounting groove is rotatably provided with a support member abutting against the bottom of the screening plate.

[0007] In one embodiment, a limiting piece is fixedly provided at the connection between the outer shell and the two sides of the installation groove, and limiting grooves for cooperating with the limiting piece are opened on both sides of the sieve plate, so that the two sides of the sieve plate can be embedded in the limiting piece movably up and down.

[0008] In one embodiment, a positioning groove is provided at the connection between the outer shell and the top of the installation groove, one end of the positioning groove extends to the outside, a positioning piece is provided at the edge of the top surface of the screening plate, and the positioning piece can be slidably embedded in the positioning groove, and the positioning piece is provided with the limiting groove, so that the positioning piece can move up and down along the limiting piece.

[0009] In one embodiment, a fastening groove is formed on the bottom surface of the screening plate, and a fastener for engaging with the fastening groove is fixed to one end of the support member facing the screening plate.

[0010] In one embodiment, the outer wall of the outer shell is detachably equipped with a vibrator.

[0011] In one embodiment, the connection between the outer shell and the bottom of the installation groove is inclined, and the height of the inclined surface increases from the inner side to the outer side of the outer shell.

[0012] In one embodiment, a handle is fixedly provided on the outer side of the support member.

[0013] The advantages or beneficial effects of the above technical solution include at least:

[0014] First, in the utility model, when replacing the sieve plate, the old sieve plate can be slid downward after the supporting effect of the supporting member is released, and then another new sieve plate can be installed to the outer shell, and then the old sieve plate can be pulled out and the remaining lithium iron phosphate powder thereon can be processed, thereby ensuring that the sieve plate can play a sieving role during the replacement process, without the need to shut down the machine or stop feeding, thereby improving work efficiency.

[0015] Secondly, in the present invention, a limiting member and a limiting groove are provided to guide the sliding direction of the sieve plate to prevent the sieve plate from tilting during the downward sliding process, resulting in different heights at both ends and causing the lithium iron phosphate powder to slide off.

[0016] Third, in the utility model, a positioning groove cooperates with a positioning piece and a fastening groove cooperates with a fastening piece to limit the axial movement of the screen plate after installation, so as to prevent the screen plate from being offset due to the vibration of the device during operation and affecting the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings show exemplary implementations of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are included in and constitute a part of this specification.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model in the processing state.

[0019] Figure 2 It is a schematic diagram of the cutaway structure of the screening part in the processing state of the utility model.

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of the structure of part A in the middle.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure when the sieve plate is replaced in the processing state of the utility model.

[0022] Figure numerals: 1. feeding part; 2. grinding part; 3. screening part; 31. outer shell; 32. screening plate; 4. discharging part; 5. supporting base; 6. mounting groove; 7. supporting member; 8. limiting member; 9. limiting groove; 10. positioning groove; 11. positioning member; 12. fastening groove; 13. fastener; 14. handle; 15. vibrator. DETAILED DESCRIPTION

[0023] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be understood that the term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc. mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0026] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0027] The names of the messages or information exchanged between multiple devices in the implementation manner of the present utility model are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0028] Reference Figure 1A pull-out lithium iron phosphate grinding and screening device comprises, from top to bottom, a feed part 1, a grinding part 2, a screening part 3, a discharging part 4 and a supporting base 5, wherein the grinding part 2 is used to crush the granular lithium iron phosphate into powder, the grinding part 2 includes but is not limited to the existing high-pressure roller mill, the feed part is the feed port of the high-pressure roller mill, and the other specific structures are not repeated here. When in use, the lithium iron phosphate is injected into the grinding part 2 through the feed part 1 to reduce the particle size of the raw material and grind larger particles into smaller particles. The ground lithium iron phosphate powder has particles of different sizes. At this time, the suitable particles are screened through the screening part 3, and finally discharged from the discharging part 4 to a collection container.

[0029] Reference Figure 1 and Figure 4 Specifically, the screening part 3 includes an outer shell 31 and at least one screening plate 32, the screening plate 32 is detachably embedded in the outer shell 31, the outer shell 31 is provided with a mounting groove 6 connected to the outside, and the front and rear ends of the screening plate 32 are movably embedded in the mounting groove 6 up and down, and the mounting groove 6 is rotatably provided with a support member 7 abutting against the bottom of the screening plate 32. Under such a setting, when installing the screening plate 32, it is embedded in the outer shell 31 and supported by the support member 7, so that the screening plate 32 is framed in the outer shell 31 to play a screening effect. When the screening plate 32 needs to be replaced, the screening plate 32 is manually held and the support member 7 is turned outward to separate the support member 7 from the screening plate 3. 2, and then slide the sieve plate 32 downward along the extension direction of the installation groove 6 and place it at the bottom of the installation groove 6, and then embed another sieve plate 32 into the position of the outer shell 31 originally used to install the sieve plate 32 and hold it manually, and then pull out the sieve plate 32 at the bottom of the installation groove 6, and finally flip the support member 7 inward to support the sieve plate 32 again. At the same time, the lithium iron phosphate powder on the sieve plate 32 can be observed by the naked eye to see whether it still has the sieving conditions. If so, it will be re-injected into the feeding part 1. Therefore, in the whole process of replacing the sieve plate 32, the sieve plate 32 plays a sieving role, that is, there is no need to shut down and stop feeding, which improves work efficiency.

[0030] During the grinding and screening process, the support plate can also play a role in sealing the mounting groove 6 to prevent the lithium iron phosphate powder from falling out of the mounting groove 6 to the outside during the process of falling downward.

[0031] In a specific embodiment, both sides of the support member 7 are hinged to the outer shell 31 through an existing mechanical structure, so that the support member 7 can flip around the hinge point with the outer shell 31 as the axis, wherein the mechanical structure includes but is not limited to bearing assembly and pin assembly.

[0032] Reference Figure 2A limit piece 8 is fixedly provided at the connection between the outer shell and the installation groove 6 on both sides, and a limit groove 9 for cooperating with the limit piece 8 is opened on both sides of the sieve plate 32, so that the two sides of the sieve plate 32 can be embedded in the limit piece 8 movably up and down. Under this arrangement, the limit piece 8 and the limit groove 9 cooperate to guide the sliding of the sieve plate 32, so that the two ends of the sieve plate 32 can maintain the same height when the sieve plate 32 slides downward, so as to avoid the sieve plate 32 tilting when sliding, causing the lithium iron phosphate powder on the sieve plate 32 to slip off.

[0033] Reference Figure 3 and Figure 4 A positioning groove 10 is provided at the connection between the outer shell 31 and the top of the installation groove 6, and one end of the positioning groove 10 extends to the outside. A positioning piece 11 is provided at the edge of the top surface of the sieve plate 32, and the positioning piece 11 is slidably embedded in the positioning groove 10. The positioning piece 11 is provided with the limiting groove 9, so that the positioning piece 11 can move up and down along the limiting piece 8. Under such a setting, when installing the sieve plate 32, the positioning piece 11 is aligned with the positioning groove 10 and then the sieve plate 32 is pushed toward the outer shell 31. When the positioning piece 11 abuts against the side wall of the positioning groove 10 at one end inside the outer shell 31, it indicates that the sieve plate 32 has reached the specified installation position. At this time, the sieve plate 32 can no longer move inward, and the support piece 7 can be flipped to support the sieve plate 32.

[0034] Reference Figure 3 A fastening groove 12 is provided on the bottom surface of the sieve plate 32, and a fastener 13 for engaging with the fastening groove 12 is fixed on one end of the support member 7 facing the sieve plate 32. In this arrangement, when the support member 7 abuts against the bottom surface of the sieve plate 32, the fastener 13 is also embedded in the fastening groove 12, which can prevent the sieve plate 32 from sliding outward.

[0035] In a specific embodiment, the fastening groove 12 is formed in an arc shape, and its depth increases from the outside to the inside, so that the fastener 13 can slide into the fastening groove 12 along the arc surface to prevent the fastener 13 from getting stuck during the process of being embedded in the fastening groove 12.

[0036] With the cooperation between the positioning piece 11 and the positioning groove 10 and the fastener 13 and the fastening groove 12, after the sieve plate 32 is installed, the sieve plate 32 cannot move in the axial direction to avoid the sieve plate 32 being offset due to the vibration of the device during operation and affecting the screening effect.

[0037] Reference Figure 1 The outer wall of the outer shell 31 is detachably equipped with a vibrator 15. Under such an arrangement, the vibrator 15 can drive the sieve plate 32 to vibrate during the sieving process to enhance the sieving efficiency of the sieve plate 32.

[0038] Reference Figure 2Since it is necessary to ensure that the support member 7 can be turned over smoothly, a certain gap is left between the bottom of the support member 7 and the outer shell 31. Therefore, the connection between the outer shell 31 and the bottom of the mounting groove 6 is inclined, and the height of the inclined surface increases from the inside to the outside of the outer shell 31. With this arrangement, the lithium iron phosphate powder can be blocked to prevent the lithium iron phosphate powder from falling to the outside through this gap.

[0039] Reference Figure 1 A handle 14 is fixedly provided on the outer side of the support member 7. With this arrangement, the staff can use the handle 14 as a force application point to more conveniently flip the support member 7.

[0040] In a specific embodiment, the handle 14 is L-shaped, with one end fixed to the support member 7 and the other end extending downward. When the support member 7 is flipped outward, the hand can be inserted into the space between the handle 14 and the support member 7, and then the handle 14 is pulled outward to flip the support member 7. The handle 14 arranged in this way is more ergonomic and convenient for the staff to apply force.

[0041] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0042] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A pull-out type lithium iron phosphate grinding and screening device, comprising, from top to bottom, a feeding part (1), a grinding part (2), a screening part (3), a discharging part (4) and a supporting base (5), characterized in that: The screening part (3) comprises an outer shell (31) and at least one screening plate (32), the screening plate (32) being detachably embedded in the outer shell (31), the outer shell (31) being provided with a mounting groove (6) communicating with the outside, and the front and rear ends of the screening plate (32) being movably embedded in the mounting groove (6) up and down, and the mounting groove (6) being rotatably provided with a support member (7) abutting against the bottom of the screening plate (32).

2. The pull-out type lithium iron phosphate grinding and screening device according to claim 1, characterized in that: A stopper (8) is fixedly provided at the connection between the outer shell (31) and the two sides of the installation groove (6), and stopper grooves (9) for matching the stopper (8) are provided on both sides of the sieve plate (32), so that the two sides of the sieve plate (32) can be embedded in the stopper (8) in a manner that they can move up and down.

3. The pull-out type lithium iron phosphate grinding and screening device according to claim 2, characterized in that: A positioning groove (10) is provided at the connection between the outer shell (31) and the top of the installation groove (6), one end of the positioning groove (10) extends to the outside, a positioning member (11) is provided at the edge of the top surface of the sieve plate (32), and the positioning member (11) is slidably embedded in the positioning groove (10), and the positioning member (11) is provided with the limiting groove (9), so that the positioning member (11) can move up and down along the limiting member (8).

4. The pull-out type lithium iron phosphate grinding and screening device according to claim 1, characterized in that: A fastening groove (12) is provided on the bottom surface of the sieve plate (32), and a fastening member (13) for engaging with the fastening groove (12) is fixedly provided on one end of the support member (7) facing the sieve plate (32).

5. The pull-out type lithium iron phosphate grinding and screening device according to claim 1, characterized in that: The outer wall of the outer shell (31) is detachably equipped with a vibrator (15).

6. The pull-out type lithium iron phosphate grinding and screening device according to claim 1, characterized in that: The connection between the outer shell (31) and the bottom of the installation groove (6) is arranged in an inclined manner, and the height of the inclined surface increases from the inner side of the outer shell (31) to the outer side.

7. The pull-out type lithium iron phosphate grinding and screening device according to claim 1, characterized in that: A handle (14) is fixedly provided on the outer side of the support member (7).

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