Plastic particle mill

Abstract

The utility model discloses a plastic particle grinding machine relates to plastic processing technical field, including frame, the middle part fixed connection of frame has the baffle, the top fixed connection of baffle has the support seat. The utility model adopts above -mentioned structure, installs the second screen in the inside lower side of screening box, and the mesh number of first screen mesh is greater than the mesh number of second screen mesh, and when the plastic is ground, will fall in the screening box, makes the screening box vibrate through vibration subassembly, and the larger particle can not pass through first screen, and remains on first screen, and smaller particle will pass through first screen and drop on second screen and be blocked, and along with the screening box vibration, the qualified powder material on second screen is discharged through the discharge pipe, and the unqualified powder material on first screen is discharged through the circulating material pipe, and through the circulating material pipe, enters the feeding assembly and carries out the next cycle grinding, can therefore reduce the equipment start -stop, material transfer etc. Intermediate step, production cycle is reduced, improves the plastic grinding efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing technology, and specifically relates to a plastic granulator grinding mill. Background Technology

[0002] Plastic products are widely used in modern society, covering many fields such as packaging, construction, automobiles, and electronics. In the production process of some plastic products, it is necessary to further refine the plastic particles into powder to meet specific processing technology and product performance requirements, so grinding mills are needed.

[0003] For example, Chinese patent CN212493288U discloses a grinding device for recycled plastic granules, including a grinding device body, a first screen fixed inside the grinding device body, a rotating rod fixed to the lower end of the motor shaft of the grinding device body, a cutter disc fixed to the surface of the rotating rod, blades fixed to the upper end of the cutter disc, a feed hopper fixed to the upper end of the grinding device body through a channel, a fixed blade fixed to the inner wall of the grinding device body, and a slot opened on the surface of the feed hopper, in which a disc is slidably engaged. By setting up the slot, disc, magnet, first groove, second screen, and n-shaped pull rod, large particle impurities can be effectively screened out, effectively ensuring product quality.

[0004] Although the aforementioned patent has solved the problem of clogging of the first screen in the grinding device and effectively improved the sieving efficiency of plastic powder, there are still some shortcomings that need to be improved. In the actual production process, the plastic particles processed by the grinding device often cannot achieve the ideal grinding effect and often need to be added to the powder a second time, which leads to a complicated processing flow, a longer production cycle, and reduced processing efficiency. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a plastic granule grinding mill to solve the problems raised in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A plastic granulator grinding mill includes a frame, a partition fixedly connected to the middle of the frame, a support fixedly connected to the top of the partition, a screening box above the support, a vibration assembly between the screening box and the support, a grinding device fixedly connected to the upper side of the frame, a first storage tank fixedly connected to the top of the grinding device, the grinding device connected to the screening box, a first screen plate installed on the upper inside of the screening box, a second screen plate installed on the lower inside of the screening box, a first discharge pipe fixedly connected to one side of the outer surface of the screening box, a circulating material pipe fixedly connected to the side of the frame near the first discharge pipe, a second discharge pipe fixedly connected to the side of the outer surface of the screening box below the first discharge pipe, a discharge pipe fixedly connected to the side of the frame near the second discharge pipe, a second storage tank located on the side of the frame near the first storage tank, the first storage tank and the second storage tank being connected, and a feeding assembly located on the side of the second storage tank near the circulating material pipe.

[0008] As a preferred technical solution, the vibration assembly includes a vibration motor, which is fixedly connected to the bottom center of the screening box. A spring and a damper are fixedly connected between the screening box and the support base and outside the vibration motor, with the spring sleeved on the outside of the damper.

[0009] As a preferred technical solution, a first guide hopper is fixedly connected to one side of the first discharge pipe, and a first pair of connectors is fixedly connected to one side of the circulating pipe, with the first guide hopper located directly above the first pair of connectors.

[0010] As a preferred technical solution, a second guide hopper is fixedly connected to one side of the second discharge pipe, and a second connector is fixedly connected to the top of the discharge pipe, with the second guide hopper located directly above the second connector.

[0011] As a preferred technical solution, a flexible tube is fixedly connected to the top of the screening box, and the top of the flexible tube is fixedly connected to the bottom of the grinding device.

[0012] As a preferred technical solution, the feeding assembly includes a mixing box, which is fixedly connected to the side of the circulating material pipe away from the first joint. A suction pipe is fixedly connected to the side of the mixing box away from the circulating material pipe, and a first feeding fan is installed on the suction pipe. A feeding pipe is fixedly connected to the side of the mixing box away from the suction pipe, and the end of the feeding pipe is fixedly connected to a second storage tank. A second feeding fan is installed on the feeding pipe.

[0013] As a preferred technical solution, a guide plate is fixedly connected to one side of the inside of both the first discharge pipe and the second discharge pipe, and the guide plate has an inclined structure.

[0014] In summary, the present invention has the following main advantages:

[0015] This invention utilizes a screening box with a first screen plate installed on the upper side and a second screen plate installed on the lower side. The mesh size of the first screen plate is larger than that of the second screen plate. When plastic powder is ground, it falls into the screening box. A vibration component causes the screening box to vibrate, preventing larger particles from passing through the first screen plate and keeping them there. Smaller particles pass through the first screen plate but fall onto the second screen plate and are blocked. As the screening box vibrates, the qualified powder on the second screen plate is discharged through the discharge pipe, while the unqualified powder on the first screen plate is discharged through the circulation pipe and enters the feeding component for the next cycle of grinding. Therefore, it can reduce intermediate steps such as equipment start-up and shutdown and material transfer, shorten the production cycle, and improve the efficiency of plastic grinding. Attached Figure Description

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

[0017] Figure 2 This is a bottom view of the screening box structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first and second mesh plates of this utility model;

[0019] Figure 4 This is a cross-sectional view of the first or second discharge pipe of this utility model.

[0020] Figure 5 This is a utility model Figure 1 A magnified structural diagram at point A.

[0021] Reference numerals: 1. Frame; 2. Partition plate; 3. Support base; 4. Screening box; 5. First screen plate; 6. Second screen plate; 7. Vibration assembly; 71. Vibration motor; 72. Spring; 73. Damper; 8. First discharge pipe; 81. First guide hopper; 9. Second discharge pipe; 91. Second guide hopper; 10. Guide plate; 11. Discharge pipe; 111. Second connecting joint; 12. Circulating material pipe; 121. First connecting joint; 13. First storage tank; 14. Grinding device; 15. Hose; 16. Second storage tank; 17. Feeding assembly; 171. Suction pipe; 172. First feeding fan; 173. Mixing box; 174. Feeding pipe; 175. Second feeding fan. Detailed Implementation

[0022] Example

[0023] refer to Figures 1 to 5The plastic granule grinding mill described in this embodiment includes a frame 1. A partition 2 is fixedly connected to the middle of the frame 1, and a support base 3 is fixedly connected to the top of the partition 2. A screening box 4 is provided above the support base 3, and a vibration component 7 is provided between the screening box 4 and the support base 3. A grinding device 14 is fixedly connected to the upper side of the frame 1. The grinding device 14 consists of a drive motor, grinding rollers, and other components. The relative movement between the grinding rollers grinds the plastic granules. The grinding device 14 is a mature product in the prior art and has been widely used in related fields. Its specific structure and working principle are relatively perfect and stable, so they will not be described in detail here. A first storage tank 13 is fixedly connected to the top of the grinding device 14. The grinding device 14 is connected to the screening box 4. A first screen plate 5 is installed on the upper side of the inside of the screening box 4, and a second screen plate 6 is installed on the lower side of the inside of the screening box 4. A first... The first discharge pipe 8 is connected to a circulating material pipe 12 on the side of the frame 1 near the first discharge pipe 8. A second discharge pipe 9 is fixedly connected to the outer surface of the screening box 4 below the first discharge pipe 8. A discharge pipe 11 is fixedly connected to the side of the frame 1 near the second discharge pipe 9. A second storage tank 16 is located on the side of the frame 1 near the first storage tank 13. The first storage tank 13 and the second storage tank 16 are connected. Feeding can also be achieved through equipment such as a feeding fan, suspending the plastic particles in the airflow and moving with it to achieve the conveying purpose. A feeding assembly 17 is located on the side of the second storage tank 16 near the circulating material pipe 12. The first screen plate 5 is flush with the opening of the first discharge pipe 8, and the second screen plate 6 is flush with the opening of the second discharge pipe 9. The first screen plate 5 can be a 30-mesh screen, and the second screen plate 6 can be a screen smaller than 30 mesh. When the plastic particles enter the screening box, larger particles cannot pass through the 30-mesh screen. The material from the 30-mesh screen will remain on the 30-mesh screen, while the material from the smaller 30-mesh screen will pass through the 30-mesh screen and be intercepted by the smaller 30-mesh screen, remaining on the smaller 30-mesh screen for easier subsequent material discharge.

[0024] refer to Figure 2 and Figure 5 The vibration assembly 7 includes a vibration motor 71, which is fixedly connected to the bottom center of the screening box 4. A spring 72 and a damper 73 are fixedly connected between the screening box 4 and the support base 3, and located outside the vibration motor 71. The spring 72 is sleeved on the outside of the damper 73. By setting the vibration motor 71, when the vibration motor 71 is working, the screening box 4 vibrates on the support base 3 through the spring 72 and the damper 73, thereby accelerating the material flow, allowing coarse plastic particles to enter the circulating material pipe 12 for further grinding, and allowing fine plastic particles to enter the discharge pipe 11 for discharge and collection.

[0025] refer to Figure 1-2 A first guide hopper 81 is fixedly connected to one side of the first discharge pipe 8, and a first connector 121 is fixedly connected to one side of the circulating pipe 12. The first guide hopper 81 is located directly above the first connector 121. A second guide hopper 91 is fixedly connected to one side of the second discharge pipe 9, and a second connector 111 is fixedly connected to the top of the discharge pipe 11. The second guide hopper 91 is located directly above the second connector 111. By setting the first guide hopper 81 and the first connector 121, it is convenient for the plastic particles discharged from the first discharge pipe 8 to enter the interior of the circulating pipe 12, which is beneficial to material conveying. By setting the second guide hopper 91 and the second connector 111, it is convenient for the plastic particles discharged from the second discharge pipe 9 to enter the discharge pipe 11, which is also beneficial to material conveying.

[0026] refer to Figure 1-2 A flexible hose 15 is fixedly connected to the top of the screening box 4, and the top of the flexible hose 15 is fixedly connected to the bottom of the grinding device 14. The flexible hose 15 is used to guide the powder in the grinding device 14 into the screening box 4, and because the flexible hose 15 is made of special material, it will not be affected by vibration.

[0027] refer to Figure 1 The feeding assembly 17 includes a mixing box 173, which is fixedly connected to the side of the circulating material pipe 12 away from the first connector 121. A suction pipe 171 is fixedly connected to the side of the mixing box 173 away from the circulating material pipe 12. A first feeding fan 172 is installed on the suction pipe 171. A feeding pipe 174 is fixedly connected to the side of the mixing box 173 away from the suction pipe 171. The end of the feeding pipe 174 is fixedly connected to the second storage tank 16. A second feeding fan 175 is installed on the feeding pipe 174. By setting up the feeding assembly 17, the first feeding fan 172 is started, creating a negative pressure in the suction pipe 171 so that external materials can be sucked into the mixing box 173 along the suction pipe 171. After the materials enter the mixing box 173, they will be mixed with the materials returning in the circulating material pipe 12. The second feeding fan 175 is started, creating pressure in the feeding pipe 174, and transporting the mixed materials in the mixing box 173 to the second storage tank 16 for storage through the feeding pipe 174. The feeding assembly 17 plays the role of material conveying in the entire production system.

[0028] refer to Figure 4 A guide plate 10 is fixedly connected to one side of the inside of the first discharge pipe 8 and the second discharge pipe 9. The guide plate 10 has an inclined structure. By setting the guide plate 10, the guide plate 10 has a sloping structure, which facilitates the outward conveying of plastic particles in the first discharge pipe 8 and the second discharge pipe 9.

[0029] Operating principle and advantages: The first feeding blower 172 creates negative pressure in the suction pipe 171, causing the plastic granules in the second storage tank 16 to be sucked into the mixing box 173 along the suction pipe 171. The second feeding blower 175 creates pressure in the feeding pipe 174, conveying the material through the feeding pipe 174 to the second storage tank 16 and then into the first storage tank 13 for storage. After the plastic granules in the first storage tank 13 enter the grinding device 14, they are ground into powder under the squeezing and grinding action of the grinding rollers. The powder ground by the grinding device 14 is guided into the screening box 4 through the hose 15. The vibration component 7 starts to work, and the screening box 4 vibrates on the support base 3 through the spring 72 and the damper 73. Under the action of vibration, the powder passes through the screening box 4. The material is constantly tumbling inside. Larger particles cannot pass through the first screen plate 5 and remain on it, while smaller particles pass through the first screen plate 5 and fall onto the second screen plate 6. The qualified powder enters the second discharge pipe 9 and, guided by the second guide hopper 91, smoothly enters the discharge pipe 11. The discharge pipe 11 discharges and collects the qualified powder, completing the conveying and collection of the qualified powder. The unqualified powder remaining on the first screen plate 5 enters the first discharge pipe 8 and, guided by the first guide hopper 81, enters the circulation pipe 12. The circulation pipe 12 is connected to the feeding component 17. The unqualified powder flows back to the mixing box 173 through the circulation pipe 12 and re-enters the grinding device 14 for cyclic grinding until the qualified fineness requirement is met.

Claims

1. A plastic granulator grinding mill, including a frame, characterized in that: A partition is fixedly connected to the middle of the frame, and a support base is fixedly connected to the top of the partition. A screening box is provided above the support base, and a vibration assembly is provided between the screening box and the support base. A grinding device is fixedly connected to the upper side of the frame, and a first storage tank is fixedly connected to the top of the grinding device. The grinding device is connected to the screening box. A first screen plate is installed on the upper inside of the screening box, and a second screen plate is installed on the lower inside of the screening box. A first discharge pipe is fixedly connected to one side of the outer surface of the screening box. A circulating material pipe is fixedly connected to the side of the frame near the first discharge pipe. A second discharge pipe is fixedly connected to the side of the outer surface of the screening box below the first discharge pipe. A discharge pipe is fixedly connected to the side of the frame near the second discharge pipe. A second storage tank is provided on the side of the frame near the first storage tank. The first storage tank and the second storage tank are connected. A feeding assembly is provided on the side of the second storage tank near the circulating material pipe.

2. The plastic granulator grinding mill according to claim 1, characterized in that: The vibration assembly includes a vibration motor, which is fixedly connected to the bottom center of the screening box. A spring and a damper are fixedly connected between the screening box and the support base and outside the vibration motor, with the spring sleeved on the outside of the damper.

3. The plastic granulator grinding mill according to claim 1, characterized in that: A first guide hopper is fixedly connected to one side of the first discharge pipe, and a first pair of connectors is fixedly connected to one side of the circulating material pipe. The first guide hopper is located directly above the first pair of connectors.

4. The plastic granulator grinding mill according to claim 1, characterized in that: A second guide hopper is fixedly connected to one side of the second discharge pipe, and a second connector is fixedly connected to the top of the discharge pipe. The second guide hopper is located directly above the second connector.

5. The plastic granulator grinding mill according to claim 1, characterized in that: A flexible tube is fixedly connected to the top of the screening box, and the top of the flexible tube is fixedly connected to the bottom of the grinding device.

6. The plastic granulator grinding mill according to claim 1, characterized in that: The feeding assembly includes a mixing box, which is fixedly connected to the side of the circulating material pipe away from the first connector. A suction pipe is fixedly connected to the side of the mixing box away from the circulating material pipe, and a first feeding fan is installed on the suction pipe. A feeding pipe is fixedly connected to the side of the mixing box away from the suction pipe, and the end of the feeding pipe is fixedly connected to a second storage tank. A second feeding fan is installed on the feeding pipe.

7. The plastic granulator grinding mill according to claim 1, characterized in that: Both the first and second discharge pipes have a guide plate fixedly connected to one side of their interior, and the guide plate has an inclined structure.

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