Mechanical mill with foreign body screening device

Abstract

The utility model relates to carbon graphite processing is with mechanical grinding technical field, the utility model provides a mechanical grinding that removes foreign matter from device is equipped with, it includes two groups of support frame, two groups symmetry set up support frame, two groups support frame between fixedly connected have grinding box, the top fixedly connected with upper grinding block of support frame, the top fixedly connected with feeding cylinder of upper grinding block, first class removes component, first class removes component setting in feeding cylinder, beating component, beating component setting in feeding cylinder, through above technical scheme, solved the technical problem of the present art that the impurity foreign matter is in the grinding cavity and the grinding assembly violent collision, because its hardness is far higher than graphite, will accelerate the abnormal wear of each component of grinding structure, even lead to local stress concentration and cause crack, shorten equipment maintenance cycle and the impurity that was not effectively removed can mix into finished product graphite particle along with the broken process, cause material purity to drop.

Description

Technical Field

[0001] This utility model relates to the field of mechanical mill technology for carbon graphite processing, specifically to a mechanical mill with a built-in foreign matter removal device. Background Technology

[0002] With the rapid development of photovoltaic technology, the demand for high-quality carbon graphite materials is increasing, driving technological innovation in specialized mechanical grinding. In photovoltaic equipment development, carbon graphite, due to its excellent conductivity, high-temperature resistance, and corrosion resistance, is widely used in the manufacture of battery electrodes, crucibles, and hot-field components. For these high-precision carbon graphite processing requirements, industrial-grade mechanical grinding utilizes diamond wheel ultra-precision grinding technology to achieve micron-level surface treatment of graphite materials, controlling the surface roughness to within Ra0.4μm. This ensures good contact between the electrode and the silicon wafer, improving photoelectric conversion efficiency.

[0003] Mechanical mills, as the core equipment for the initial processing of graphite lumps, work by using the mechanical extrusion of the grinding structure to coarsely crush the raw graphite lumps into particles with a diameter of 15–50 mm. However, natural graphite ore or artificial graphite lumps often contain impurities such as metal oxides, silicate minerals, and free carbon clusters. These impurities differ significantly from the physical properties of graphite (such as hardness, density, and brittleness), and during the grinding process, they have a dual negative impact on equipment and product quality: on the one hand, when impurities collide violently with the grinding components in the grinding chamber, their hardness is much higher than that of graphite, which accelerates the abnormal wear of the grinding structure components and may even lead to local stress concentration and cracks, shortening the equipment maintenance cycle; on the other hand, impurities that are not effectively screened out will be mixed into the finished graphite particles during the crushing process, causing a decrease in material purity. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a mechanical mill with a built-in foreign matter screening device, which solves the technical problems in the prior art where impurities and foreign objects collide violently with the grinding components in the grinding chamber. Due to their hardness being much higher than that of graphite, they accelerate the abnormal wear of the grinding structure components, and may even cause local stress concentration and cracks, shortening the equipment maintenance cycle. Furthermore, impurities that are not effectively screened out will be mixed into the finished graphite particles during the crushing process, causing a decrease in material purity.

[0005] According to one aspect, at least one embodiment of the present invention provides a mechanical mill with a built-in foreign matter screening device, comprising: two sets of support frames, the two sets of support frames being symmetrically arranged, a grinding box being fixedly connected between the two sets of support frames, an upper grinding block being fixedly connected to the top of the support frame, a feeding cylinder being fixedly connected to the top of the upper grinding block, a through groove being provided through the center of the upper grinding block, the through groove being connected to the bottom of the feeding cylinder, and a insertion slot being provided on the side of the feeding cylinder; A primary screening component is disposed inside a feeding cylinder. The primary screening component includes a screen plate that is inserted into a slot. A plug-in part is fixedly connected to the side of the screen plate. The plug-in part fits against the side of the feeding cylinder. A handle is fixedly connected to the side of the plug-in part. A through groove is provided through the top of the plug-in part. The striking component is disposed inside the feeding cylinder and below the screen plate.

[0006] For example, in a mechanical mill with a built-in foreign matter screening device provided in at least one embodiment of the present invention, a knob is provided on the side of the insertion part, the side of the knob extends into the through groove and is rotatably connected to the insertion part, a locking block is fixedly connected to the side of the knob, and the locking block and the feeding cylinder are rotatably inserted into each other.

[0007] For example, in a mechanical mill with a built-in foreign matter screening device provided in at least one embodiment of the present invention, the impact assembly includes a second motor fixedly installed on the side of the feeding cylinder, a first drive rod fixedly connected to the power shaft of the second motor via a bearing, the side of the first drive rod extending into the feeding cylinder, a rotating plate fixedly connected to the outside of the first drive rod, a spring provided on the top of the rotating plate, the bottom of the spring fixedly connected to the rotating plate, an impact ball fixedly connected to the top of the spring, a damping rod provided inside the spring, a sliding part provided on the bottom of the impact ball, and the bottom of the sliding part slidably connected to the rotating plate.

[0008] For example, in a mechanical mill with a built-in foreign matter screening device provided in at least one embodiment of the present invention, a secondary screening assembly is further provided between the two sets of support frames. The secondary screening assembly includes a screening bucket located between the two sets of support frames and a third motor fixedly installed on the side of one of the support frames. Rotary connecting parts are fixedly connected to both sides of the screening bucket. The rotating connecting parts are rotatably connected to the support frame. A gear part is provided at the bottom of the screening bucket.

[0009] For example, in a mechanical mill with a built-in foreign matter screening device provided in at least one embodiment of the present invention, the third motor's power shaft is fixedly connected to a second drive rod via a bearing, the second drive rod is rotatably connected to a support frame, a drive gear is fixedly connected to the side of the second drive rod, and the drive gear is meshed with a gear unit.

[0010] For example, in a mechanical mill with a built-in foreign matter screening device provided in at least one embodiment of the present invention, the inner wall of the grinding box is fixedly connected to a mounting base by a fixing rod, a first motor is fixedly installed on the top of the mounting base, and a lower grinding block is fixedly connected to the power shaft of the first motor by a bearing.

[0011] For example, in a mechanical mill with a built-in foreign matter screening device provided in at least one embodiment of the present invention, the top of the lower grinding block and the upper grinding block are fitted together, a rotating seat is fixedly connected to the bottom of the lower grinding block, and the rotating seat and the mounting seat are rotatably connected.

[0012] For example, in a mechanical mill with a built-in foreign matter screening device provided in at least one embodiment of the present invention, a guide groove is fixedly connected to the bottom of the grinding box, the guide groove and the grinding box are integrally formed, and the guide groove is located above the screening hopper.

[0013] The beneficial effects of the embodiments of this utility model are as follows: (1) In this utility model, by setting a primary screening component and a striking component, the first-stage screening operation of the graphite raw material before processing is realized, the impurity particles in the graphite raw material are screened out, and the impurities and foreign objects are prevented from entering the grinding box and causing damage to the upper and lower grinding blocks, thereby improving the service life of the equipment. When working, the second motor drives the first drive rod and the rotating plate to rotate, which drives the impact ball to repeatedly strike the screen plate, causing the screen plate to vibrate, thereby accelerating the graphite raw material to pass through the screen plate, preventing the raw material from accumulating, speeding up the passing speed, and improving the screening efficiency. The spring setting can reduce the impact force generated by the impact ball and the screen plate, reduce the damage to the second motor and the first drive rod. The screen plate adopts a plug-in design of "knob + card block", which is convenient for the staff to maintain it. The disassembly and assembly process is simple, easy to operate, and has high operation convenience.

[0014] (2) In this utility model, by setting a secondary screening component, the graphite particles after grinding are screened twice to remove impurities that were not effectively screened by the primary screening component, thereby improving the purity of the graphite raw material grinding particles. The particles ground by the lower grinding block and the upper grinding block are transported to the screening hopper by the guide groove. The third motor works to drive the second drive rod and the drive gear to rotate. Since the drive gear and the gear part are meshed, when the drive gear rotates, the drive gear can drive the screening hopper and the gear part to reciprocate. The graphite particles are collected after passing through the screening hopper, while the impurities that were not effectively screened will remain in the screening hopper. The secondary screening component works together with the primary screening component to realize a multi-stage screening process, which can improve the overall screening effect and improve the processing quality and purity of the graphite raw material. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall external appearance of this utility model; Figure 2 This is a side view of the present invention. Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the primary screening component of this utility model; Figure 5 This is an exploded view of the striking component of this utility model; Figure 6 This is a schematic diagram of the secondary screening component of this utility model.

[0017] In the diagram: 1. Support frame; 2. Grinding box; 3. Upper grinding block; 4. Feeding cylinder; 5. Primary screening component; 6. Impact component; 7. Secondary screening component; 8. Guide groove; 9. Fixing rod; 10. Mounting base; 11. First motor; 12. Lower grinding block; 13. Rotating seat; 14. Insertion slot; 501. Screen plate; 502. Insertion part; 503. Handle; 504. Through groove; 505. Knob; 506. Locking block; 601. Second motor; 602. First drive rod; 603. Rotating plate; 604. Spring; 605. Sliding part; 606. Impact ball; 701. Screening hopper; 702. Rotating connecting piece; 703. Third motor; 704. Second drive rod; 705. Drive gear; 706. Gear part. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0019] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between 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.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figures 1-5 As shown, it illustrates a mechanical mill with a built-in foreign matter screening device in one embodiment of the present invention, comprising: two sets of support frames 1, the two sets of support frames 1 are symmetrically arranged, a grinding box 2 is fixedly connected between the two sets of support frames 1, an upper grinding block 3 is fixedly connected to the top of the support frame 1, a feeding cylinder 4 is fixedly connected to the top of the upper grinding block 3, a through groove is opened through the center of the upper grinding block 3, the through groove is connected to the bottom of the feeding cylinder 4, and a plug-in slot 14 is opened on the side of the feeding cylinder 4; The primary screening component 5 is installed inside the feeding cylinder 4. The primary screening component 5 includes a screen plate 501 that is inserted into the insertion slot 14. An insertion part 502 is fixedly connected to the side of the screen plate 501. The insertion part 502 fits against the side of the feeding cylinder 4. A handle 503 is fixedly connected to the side of the insertion part 502. A through groove 504 is provided through the top of the insertion part 502. A knob 505 is provided on the side of the plug-in part 502. The side of the knob 505 extends into the through groove 504 and is rotatably connected to the plug-in part 502. A locking block 506 is fixedly connected to the side of the knob 505. The locking block 506 and the feeding cylinder 4 are rotatably plugged in. The striking component 6 is located inside the feeding cylinder 4 and below the screen plate 501. The striking assembly 6 includes a second motor 601 fixedly installed on the side of the feeding cylinder 4. The power shaft of the second motor 601 is fixedly connected to a first drive rod 602 via a bearing. The side of the first drive rod 602 extends into the feeding cylinder 4. A rotating plate 603 is fixedly connected to the outside of the first drive rod 602. A spring 604 is provided on the top of the rotating plate 603. The bottom of the spring 604 is fixedly connected to the rotating plate 603. An impact ball 606 is fixedly connected to the top of the spring 604. A damping rod is provided inside the spring 604. A sliding part 605 is provided on the bottom of the impact ball 606. The bottom of the sliding part 605 is slidably connected to the rotating plate 603.

[0025] In this embodiment, during operation, the operator pours the graphite raw material, crushed into small pieces, from the top of the feeding cylinder 4. Impurities and foreign objects contained within are removed by the sieve plate 501. During the sieving process, the second motor 601 is controlled to drive the first drive rod 602 and the rotating plate 603 to rotate, causing the impact ball 606 to repeatedly strike the sieve plate 501, resulting in vibration of the sieve plate 501. This accelerates the passage of the graphite raw material through the sieve plate 501, prevents material accumulation, speeds up the passage, and improves screening efficiency. The spring 604 is included to reduce the impact of the impact ball 606. The impact force generated by the collision between the screen plate 501 and the second motor 601 reduces the damage to the first drive rod 602 and improves the service life of the equipment. When the screen plate 501 needs maintenance, simply turn the knob 505 so that the locking block 506 is no longer inserted into the feeding cylinder 4, and the screen plate 501 can be removed for maintenance. The detachable design of the screen plate 501 makes it easy for staff to maintain it, and the disassembly and assembly process is simple and easy to operate, with high operational convenience. The second motor 601 is controlled by PLC, which can accurately control the impact frequency and interval time.

[0026] like Figures 2-6 As shown, a secondary screening component 7 is provided in another embodiment of the present invention. The secondary screening component 7 is provided between two sets of support frames 1. The secondary screening component 7 includes a screening bucket 701 located between the two sets of support frames 1 and a third motor 703 fixedly installed on the side of one of the support frames 1. Rotary connecting parts 702 are fixedly connected to both sides of the screening bucket 701. The rotating connecting parts 702 are rotatably connected to the support frame 1. A gear part 706 is provided at the bottom of the screening bucket 701. The power shaft of the third motor 703 is fixedly connected to the second drive rod 704 via a bearing. The second drive rod 704 is rotatably connected to the support frame 1. The side of the second drive rod 704 is fixedly connected to the drive gear 705, and the drive gear 705 is meshed with the gear part 706. The inner wall of the grinding box 2 is fixedly connected to the mounting base 10 by the fixing rod 9. The top of the mounting base 10 is fixedly installed with the first motor 11. The power shaft of the first motor 11 is fixedly connected to the lower grinding block 12 by the bearing. The top of the lower grinding block 12 fits the shape of the upper grinding block 3, and the bottom of the lower grinding block 12 is fixedly connected to a rotating seat 13, which is rotatably connected to the mounting seat 10. The bottom of the grinding box 2 is fixedly connected to a guide groove 8. The guide groove 8 and the grinding box 2 are integrally formed. The guide groove 8 is located above the screening hopper 701. In this embodiment, the first motor 11 drives the lower grinding block 12 to rotate, thereby grinding the graphite particles located between the lower grinding block 12 and the upper grinding block 3. The ground particles are then conveyed by the guide groove 8 into the screening hopper 701. The third motor 703 then drives the second drive rod 704 and the drive gear 705 to rotate. Since the drive gear 705 and the gear section 706 are meshed, when the drive gear 705 rotates, it drives the screening hopper 701 and the gear section 706 to reciprocate, allowing the graphite particles to pass through the screening hopper. Impurities that are not effectively screened out are collected after 701, while those that are not effectively screened out are left in the screening hopper 701. To ensure that the deflection of the screening hopper 701 does not cause the raw material particles inside to be shaken out, the central angle of the gear part 706 is set to 60 degrees. The secondary screening component 7 works together with the primary screening component 5. Through multi-stage screening, the overall screening effect can be improved, and the processing quality and purity of graphite raw materials can be improved. The first motor 11 and the third motor 703 are controlled by PLC, which can achieve precise control of the grinding rate and the reciprocating rotation angle of the screening hopper 701.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mechanical mill with a built-in foreign matter screening device, characterized in that, include: Two sets of support frames (1) are arranged symmetrically. A grinding box (2) is fixedly connected between the two sets of support frames (1). An upper grinding block (3) is fixedly connected to the top of the support frame (1). A feeding cylinder (4) is fixedly connected to the top of the upper grinding block (3). A through groove is opened through the center of the upper grinding block (3). The through groove is connected to the bottom of the feeding cylinder (4). A plug-in slot (14) is opened on the side of the feeding cylinder (4). A primary screening component (5) is disposed inside a feeding cylinder (4). The primary screening component (5) includes a screen plate (501) that is inserted into a slot (14). A plug-in part (502) is fixedly connected to the side of the screen plate (501). The plug-in part (502) is in contact with the side of the feeding cylinder (4). A handle (503) is fixedly connected to the side of the plug-in part (502). A through groove (504) is provided through the top of the plug-in part (502). The striking component (6) is disposed inside the feeding cylinder (4) and below the sieve plate (501).

2. The mechanical mill with a built-in foreign matter screening device according to claim 1, characterized in that, A knob (505) is provided on the side of the plug-in part (502). The side of the knob (505) extends into the through groove (504) and is rotatably connected to the plug-in part (502). A locking block (506) is fixedly connected to the side of the knob (505). The locking block (506) and the feeding cylinder (4) are rotatably plugged in.

3. A mechanical mill with a built-in foreign matter screening device according to claim 1, characterized in that, The striking assembly (6) includes a second motor (601) fixedly installed on the side of the feeding cylinder (4). The power shaft of the second motor (601) is fixedly connected to a first drive rod (602) via a bearing. The side of the first drive rod (602) extends into the feeding cylinder (4). A rotating plate (603) is fixedly connected to the outside of the first drive rod (602). A spring (604) is provided on the top of the rotating plate (603). The bottom of the spring (604) is fixedly connected to the rotating plate (603). An impact ball (606) is fixedly connected to the top of the spring (604). A damping rod is provided inside the spring (604). A sliding part (605) is provided on the bottom of the impact ball (606). The bottom of the sliding part (605) is slidably connected to the rotating plate (603).

4. A mechanical mill with a built-in foreign matter screening device according to claim 1, characterized in that, A secondary screening assembly (7) is provided between the two sets of support frames (1). The secondary screening assembly (7) includes a screening bucket (701) located between the two sets of support frames (1) and a third motor (703) fixedly installed on the side of one of the support frames (1). Rotary connecting parts (702) are fixedly connected to both sides of the screening bucket (701). The rotating connecting parts (702) are rotatably connected to the support frame (1). A gear part (706) is provided at the bottom of the screening bucket (701).

5. A mechanical mill with a built-in foreign matter screening device according to claim 4, characterized in that, The power shaft of the third motor (703) is fixedly connected to the second drive rod (704) via a bearing. The second drive rod (704) is rotatably connected to the support frame (1). A drive gear (705) is fixedly connected to the side of the second drive rod (704). The drive gear (705) is meshed with the gear part (706).

6. A mechanical mill with a built-in foreign matter screening device according to claim 1, characterized in that, The inner wall of the grinding box (2) is fixedly connected to the mounting base (10) by the fixing rod (9). The top of the mounting base (10) is fixedly installed with the first motor (11). The power shaft of the first motor (11) is fixedly connected to the lower grinding block (12) by the bearing.

7. A mechanical mill with a built-in foreign matter screening device according to claim 6, characterized in that, The top of the lower grinding block (12) fits the shape of the upper grinding block (3), and a rotating seat (13) is fixedly connected to the bottom of the lower grinding block (12). The rotating seat (13) and the mounting seat (10) are rotatably connected.

8. A mechanical mill with a built-in foreign matter screening device according to claim 1, characterized in that, The bottom of the grinding box (2) is fixedly connected to a guide groove (8). The guide groove (8) and the grinding box (2) are integrally formed. The guide groove (8) is located above the screening hopper (701).

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