Low-noise powder grinding device for processing EVA (Ethylene Vinyl Acetate) reclaimed material

Abstract

The utility model relates to the field of grinding devices, in particular to a low-noise grinding device for processing EVA (ethylene-vinyl acetate) reclaimed materials, which comprises a grinding box, a partition plate is bolted to the lower part of an inner cavity of the grinding box, mounting grooves are formed in two sides of the lower part of the inner cavity of the grinding box, first springs are bolted to the bottoms of inner cavities of the mounting grooves, and sliding blocks are connected to the inner sides of the mounting grooves in a sliding manner; the bottoms of the sliding blocks are in bolted connection with the tops of the first springs, the inner sides of the sliding blocks are in bolted connection with a screening net, and the center of the bottom of the screening net is in bolted connection with a linkage rod. By means of the grinding box, the partition plate, the first spring, the screening net, the linkage rod and other assemblies, ground regenerated materials can be screened, regenerated material powder capable of penetrating through the screening net is qualified powder, regenerated materials which cannot penetrate through the screening net need to be conveyed into the backflow box, and the regenerated materials cannot penetrate through the screening net. And the regenerated material particles are pumped back into the inner cavity of the grinding box again through the first fan and the feeding pipe, and secondary grinding is conducted till the regenerated material can be ground to reach the standard.

Description

Technical Field

[0001] The utility model relates to the field of powder grinding devices, and particularly relates to a powder grinding device for processing EVA recycled materials with low noise. Background Art

[0002] Eva material is what we commonly call it. Its chemical name is ethylene-vinyl acetate copolymer, which is an extremely common material and a relatively common midsole material in daily life. The finished products made of it have good softness, shock absorption, anti-slip, and strong pressure resistance. Such as the common EVA slippers, cotton shoes, EVA mobile phone cases, EVA ducts, etc. According to the fineness of the material to be ground and the fineness of the discharged material, the powder grinding device can be divided into six types: vertical swing powder grinding device, high-pressure hanging roller powder grinding device, high-pressure fine powder grinding device, straight-through centrifugal powder grinding device, super-pressure trapezoidal powder grinding device, and three-ring medium-speed powder grinding device.

[0003] After retrieval, a thermoplastic plastic powder grinding equipment with the publication number of CN202023098909.5 specifically discloses that it includes a substrate. On the substrate, a first powder grinding box, a screening and cooling box, and a second powder grinding box are fixedly installed through brackets. The first powder grinding box and the second powder grinding box are arranged in the same structure. The first powder grinding box is located above the second powder grinding box. The screening and cooling box is located between the first powder grinding box and the second powder grinding box. The moving grinding disc and the fixed grinding disc are arranged correspondingly. The discharge port of the first powder grinding box is communicated with a first feeding pipe. The screen is obliquely installed on the side wall of the screening and cooling box. The lower end of the screening and cooling box is respectively communicated with a discharge pipe and a second feeding pipe. The discharge pipe is located directly below the screen. The second feeding pipe is located on one side of the screen. One end of the second feeding pipe is communicated with the feeding port of the second powder grinding box. The utility model can perform secondary cooling and grinding, and has good grinding quality and uniform grinding.

[0004] However, the above device still has certain defects. For example, when a plastic powder grinding machine is in use, the plastic to be ground is directly poured into the plastic powder grinding machine for grinding. Since the feeding port is in an open state, when plastic powder grinding work is carried out, a large amount of dust will be generated, which will affect the surrounding environment and the physical health of workers.

[0005] Therefore, it is very necessary to invent a powder grinding device for processing EVA recycled materials with low noise to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a powder grinding device for processing EVA recycled materials with low noise, which can effectively solve the above technical problems.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A low-noise grinding device for processing EVA recycled materials, including a grinding box. A partition plate is bolted to the lower part of the inner cavity of the grinding box. Installation grooves are formed on both sides of the lower part of the inner cavity of the grinding box. A first spring is bolted to the bottom of the inner cavity of the installation groove. A slider is slidably connected to the inner side of the installation groove, and the bottom of the slider is bolted to the top of the first spring. A sieve mesh is bolted to the inner side of the slider. A linkage rod is bolted to the center of the bottom of the sieve mesh. A sleeve is bolted to the bottom of the partition plate. The surface of the linkage rod is slidably connected to the inner side of the sleeve. A second spring is bolted to the inner side of the sleeve, and the top of the second spring is bolted to the middle of the linkage rod. A feed hopper is communicated with the left side of the top of the grinding box. A sealing plate is hinged to the upper part of the right side of the feed hopper. A handle is bolted to the right side of the top of the sealing plate. Limit members are bolted to the left side of the feed hopper and the right side of the sealing plate respectively. A pin is slidably inserted into the inner side of the limit member.

[0008] Preferably, a gear tooth is arranged at the lower part of the right side of the linkage rod. A servo motor is bolted to the right side of the bottom of the grinding box. An output end of the servo motor is bolted with an incomplete gear, so that the servo motor is used as a driving source to drive the incomplete gear to rotate. During the rotation of the incomplete gear, the linkage rod will be driven to move vertically through the gear tooth.

[0009] Preferably, a grinding roller is rotatably connected to the middle part of the inner cavity of the grinding box through a bearing. Linkage gears are bolted to the left sides of the grinding rollers and penetrate through the grinding box. A driving motor is bolted to the middle part of the left side of the grinding box, and an output end of the driving motor is bolted to the left side of the linkage gear. Through the driving motor as a driving source, the grinding rollers on both sides are driven to rotate synchronously inward through the linkage gears to continuously grind the recycled materials.

[0010] Preferably, a reflux box is bolted to the middle part of the right side of the grinding box. A feeding pipe is communicated with the top of the reflux box. A first blower is communicated with the middle part of the feeding pipe. The recycled materials that are not completely crushed in the reflux box are extracted through the first blower and the feeding pipe and then conveyed back to the grinding box for secondary grinding.

[0011] Preferably, a discharge pipe is communicated with the lower part of the left side of the grinding box, and a second blower is communicated with the surface of the discharge pipe. The divided materials that are ground and sieved in the grinding box are extracted through the second blower and the discharge pipe for discharging.

[0012] Preferably, communication grooves are formed in the lower part of the right side of the grinding box and the upper part of the left side of the reflux box. The materials that cannot pass through the sieve mesh due to incomplete grinding will flow into the communication grooves and then into the reflux box through the communication grooves.

[0013] Preferably, drainage plates are bolted to both sides of the upper part of the inner cavity of the grinding box to drain the recycled materials to be ground so that they fall between the grinding rollers on both sides.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0015] 1. Through components such as a grinding box, a partition plate, a first spring, a screening mesh, a linkage rod, etc., the recycled material after grinding can be screened. The recycled material powder that can pass through the mesh is qualified powder, and the recycled material that cannot pass through the mesh will be conveyed to the reflux box, and the recycled material particles will be redrawn into the inner cavity of the grinding box through the first fan and the feeding pipe for secondary grinding until the recycled material can meet the grinding standard;

[0016] 2. Through components such as a feed hopper, a sealing plate, a handle, a limiting member, a bolt, etc., the recycled material processed and ground in the grinding box can be ground in a closed manner. When the sealing plate covers the upper part of the feed hopper and is fixed by a bolt, a sealed space is formed in the inner cavity of the grinding box to prevent dust from floating out of the grinding box during the grinding process, polluting the working environment and harming the staff. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Front view of the overall structure of the present utility model;

[0019] Figure 2 Front cross-sectional view of the overall structure of the present utility model;

[0020] Figure 3 Top view of a partial structure of the present utility model;

[0021] Figure 4 For the present utility model's Figure 2 Enlarged view of the structure at A;

[0022] Figure 5 For the present utility model's Figure 2 Enlarged view of the structure at B.

[0023] Explanation of the reference numerals in the drawings:

[0024] 1. Grinding box; 2. Partition board; 3. Installation groove; 4. First spring; 5. Slide block; 6. Sieve mesh; 7. Linking rod; 8. Sleeve; 9. Second spring; 10. Feeding hopper; 11. Sealing plate; 12. Handle; 13. Limiting piece; 14. Bolt; 15. Teeth; 16. Servo motor; 17. Incomplete gear; 18. Grinding roller; 19. Linking gear; 20. Driving motor; 21. Return box; 22. Feeding pipe; 23. First blower; 24. Discharge pipe; 25. Second blower; 26. Connecting groove; 27. Drainage plate. Detailed implementation mode

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0026] The present utility model provides a Figures 1-5 powder grinding device for processing low-noise EVA recycled materials as shown in the figure, including a grinding box 1. A partition board 2 is bolted to the lower part of the inner cavity of the grinding box 1. Installation grooves 3 are opened on both sides of the lower part of the inner cavity of the grinding box 1. A first spring 4 is bolted to the bottom of the inner cavity of the installation groove 3. A slide block 5 is slidably connected to the inner side of the installation groove 3, and the bottom of the slide block 5 is bolted to the top of the first spring 4. A sieve mesh 6 is bolted to the inner side of the slide block 5. A linking rod 7 is bolted to the center of the bottom of the sieve mesh 6. A sleeve 8 is bolted to the bottom of the partition board 2. The surface of the linking rod 7 is slidably connected to the inner side of the sleeve 8. A second spring 9 is bolted to the inner side of the sleeve 8, and the top of the second spring 9 is bolted to the middle of the linking rod 7. The left side of the top of the grinding box 1 is communicated with a feeding hopper 10. The upper part of the right side of the feeding hopper 10 is hinged with a sealing plate 11. A handle 12 is bolted to the right side of the top of the sealing plate 11. Limiting pieces 13 are bolted to the left side of the feeding hopper 10 and the right side of the sealing plate 11 respectively. A bolt 14 is slidably inserted into the inner side of the limiting piece 13.

[0027] Teeth 15 are arranged at the lower part of the right side of the linking rod 7. A servo motor 16 is bolted to the right side of the bottom of the grinding box 1. An incomplete gear 17 is bolted to the output end of the servo motor 16, so that the servo motor 16 is used as a driving source to drive the incomplete gear 17 to rotate. During the rotation of the incomplete gear 17, the linking rod 7 will be driven to move vertically through the teeth 15.

[0028] A grinding roller 18 is rotatably connected to the middle of the inner cavity of the grinding box 1 through a bearing. Linking gears 19 are bolted to the left sides of both sides of the grinding roller 18 and pass through the grinding box 1. A driving motor 20 is bolted to the middle of the left side of the grinding box 1, and the output end of the driving motor 20 is bolted to the left side of the linking gear 19. By using the driving motor 20 as a driving source, the grinding rollers 18 on both sides are driven to rotate synchronously inward through the linking gears 19 to continuously grind the recycled materials.

[0029] In the middle on the right side of the grinding box 1, a reflux box 21 is bolted. At the top of the reflux box 21, a feeding pipe 22 is connected. In the middle of the feeding pipe 22, a first blower 23 is connected. Through the first blower 23 and the feeding pipe 22, the incompletely crushed recycled material in the reflux box 21 is extracted and conveyed back to the grinding box 1 for secondary grinding.

[0030] At the lower part on the left side of the grinding box 1, a discharge pipe 24 is connected. On the surface of the discharge pipe 24, a second blower 25 is connected. Through the second blower 25 and the discharge pipe 24, the classified material that has been ground and sieved in the grinding box 1 is extracted for discharging.

[0031] Communication grooves 26 are provided at the lower part on the right side of the grinding box 1 and the upper part on the left side of the reflux box 21. The materials that cannot pass through the screening mesh 6 due to incomplete grinding will flow into the communication grooves 26 and then flow into the reflux box 21 through the communication grooves 26.

[0032] On both sides at the upper part of the inner cavity of the grinding box 1, drainage plates 27 are bolted to drain the recycled material to be ground so that it falls between the two grinding rollers 18 on both sides.

[0033] Refer to the attached Figures 1-5 , Working principle: When the device is in use, first pull out the bolt 14 from the inside of the limiting member 13, and rotate the sealing plate 11 to the right side of the feeding hopper 10 through the handle 12. Then put the recycled material to be processed into the grinding box 1 through the feeding hopper. Then turn on the servo motor 16, the drive motor 20 and the first blower 23. The drive motor 20 drives the grinding rollers 18 in the inner cavity of the grinding box 1 to rotate towards each other through the linkage gear 19 to crush and grind the incoming recycled material. The ground recycled material powder will fall onto the lower screening mesh 6. The servo motor 16 will drive the screening mesh 6 to move vertically in the installation groove 3 through the linkage rod 7 and the gear teeth 15. At the same time, through the first spring 4, vibration is generated on the surface of the screening mesh 6 to prevent the mesh openings of the screening mesh 6 from being blocked. The qualified ground powder will pass through the screening mesh 6, and the unqualified recycled material will fall into the reflux box 21 through the communication grooves 26. At this time, the first blower 23 will extract the materials in the reflux box 21 through the feeding pipe 22 and send the unqualified materials back to the inside of the grinding rollers 18 through the other end of the feeding pipe 22 for multiple grindings until the recycled material powder can pass through the screening mesh 6, completing the powder grinding operation.

[0034] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A grinding device for processing recycled EVA materials with low noise, comprising a grinding box (1), characterized in that: A partition plate (2) is bolted to the lower part of the inner cavity of the grinding box (1). Installation grooves (3) are formed on both sides of the lower part of the inner cavity of the grinding box (1). A first spring (4) is bolted to the bottom of the inner cavity of the installation groove (3). A slider (5) is slidably connected to the inner side of the installation groove (3), and the bottom of the slider (5) is bolted to the top of the first spring (4). A sieve mesh (6) is bolted to the inner side of the slider (5). A linkage rod (7) is bolted to the center of the bottom of the sieve mesh (6). A sleeve (8) is bolted to the bottom of the partition plate (2). The surface of the linkage rod (7) is slidably connected to the inner side of the sleeve (8). A second spring (9) is bolted to the inner side of the sleeve (8), and the top of the second spring (9) is bolted to the middle of the linkage rod (7). A feed hopper (10) is communicated with the left side of the top of the grinding box (1). A sealing plate (11) is hinged to the upper part of the right side of the feed hopper (10). A handle (12) is bolted to the right side of the top of the sealing plate (11). Limit members (13) are bolted to the left side of the feed hopper (10) and the right side of the sealing plate (11). A bolt (14) is slidably inserted into the inner side of the limit member (13).

2. A grinding device for processing low-noise EVA recycled materials according to claim 1, characterized in that: A gear tooth (15) is arranged at the lower part of the right side of the linkage rod (7). A servo motor (16) is bolted to the right side of the bottom of the grinding box (1). An output end of the servo motor (16) is bolted with an incomplete gear (17).

3. A grinding device for processing low-noise EVA recycled material according to claim 1, characterized in that: A grinding roller (18) is rotatably connected to the middle part of the inner cavity of the grinding box (1) through a bearing. The left side of the grinding roller (18) passes through the grinding box (1) and is bolted with a linkage gear (19). A driving motor (20) is bolted to the middle part of the left side of the grinding box (1), and an output end of the driving motor (20) is bolted to the left side of the linkage gear (19).

4. A grinding device for processing low-noise EVA recycled materials according to claim 1, characterized in that: A return box (21) is bolted to the middle part of the right side of the grinding box (1). A feeding pipe (22) is communicated with the top of the return box (21). A first blower (23) is communicated with the middle part of the feeding pipe (22).

5. A grinding device for processing low-noise EVA recycled materials according to claim 1, characterized in that: A discharge pipe (24) is communicated with the lower part of the left side of the grinding box (1), and a second blower (25) is communicated with the surface of the discharge pipe (24).

6. A grinding device for processing low-noise EVA recycled materials according to claim 1, characterized in that: Communication grooves (26) are formed on the lower part of the right side of the grinding box (1) and the upper part of the left side of the return box (21).

7. A grinding device for processing low-noise EVA recycled materials according to claim 1, characterized in that: Drainage plates (27) are bolted to both sides of the upper part of the inner cavity of the grinding box (1).

Images