Secondary grinding device for plastic powder production
By designing a secondary grinding device, a motor-driven transmission rod is used to drive a conical grinding block to perform secondary grinding of the plastic powder. The device also uses a screen and support springs to prevent clogging, thus solving the problems of uneven fineness and low efficiency in traditional plastic powder grinding devices and achieving more efficient plastic powder production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUZHOU TENGHUI NEW MATERIALS CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional plastic powder grinding equipment uses a single-stage grinding method, which results in uneven fineness of the ground plastic powder, poor grinding effect, and the need to re-feed materials during multiple grinding processes, affecting production efficiency.
A secondary grinding device is adopted, in which a motor drives a transmission rod to drive two conical grinding blocks to grind the material in the conical screen, thereby achieving secondary grinding. Different fineness plastic powders are screened by the difference in pore size between the conical screen and the fine screen. At the same time, the elastic support of the support spring is used to prevent material blockage.
It improves the grinding effect and efficiency of plastic powder, ensures stable equipment operation, avoids material blockage, and increases production efficiency.
Smart Images
Figure CN224486231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic powder production technology, and in particular to a secondary grinding device for plastic powder production. Background Technology
[0002] Plastic powder grinding is the process of grinding plastic granules or sheets into fine powder through mechanical action. It is usually done using a grinder, which has a grinding disc and grinding rollers inside. The grinding rollers are driven by a grinding motor to rotate, which squeezes and grinds the plastic granules. The ground plastic powder is then sieved through a screen to remove larger particles, ensuring the uniformity and fineness of the powder.
[0003] Traditional plastic powder grinding equipment typically uses a single-stage grinding method, which makes it difficult to grind the material thoroughly. This results in uneven fineness of the ground plastic powder and poor grinding effect. When grinding multiple times, the plastic powder needs to be fed back into the grinding machine, which affects production efficiency. Therefore, we propose a secondary grinding device for plastic powder production. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a secondary grinding device for plastic powder production.
[0005] This utility model is achieved by the following technical solution: a secondary grinding device for plastic powder production, including a cylinder, a feed pipe connected to the top of the cylinder, a discharge pipe connected to the bottom of the feed pipe, a grinding component provided in the middle of the cylinder, a shaking component provided on the surface of the cylinder, an outer cover provided on the outside of the cylinder, and a number of support columns fixedly connected to the bottom of the outer cover.
[0006] The grinding assembly includes a motor, a transmission rod fixedly connected to the output end of the motor, a conical grinding block fixedly connected to the surface of the transmission rod, a conical screen rotatably connected to the surface of the transmission rod, two conical screens being provided, a fixed cover fixedly connected between the two conical screens, a grinding roller fixedly connected to the bottom of the transmission rod, and a fine screen provided at the bottom of the grinding roller.
[0007] The above technical solution involves a motor driving a transmission rod to rotate, which in turn drives two conical grinding blocks to rotate. These two conical grinding blocks grind the material inside the conical screen. After grinding, the material inside the upper conical screen passes through the screen holes and falls into the lower conical screen for secondary grinding. The material inside the lower conical screen falls through the aperture onto a fine screen. When the transmission rod rotates, it drives the grinding roller to perform a circular motion, further grinding the material on the fine screen, thus improving the grinding effect and efficiency.
[0008] As a further improvement to the above solution, the bottom of the motor is fixedly connected to the top of the cylinder, and the surface of the transmission rod is rotatably connected to the inner wall of the cylinder.
[0009] As a further improvement to the above scheme, the surface of the conical grinding block is in contact with the inner wall of the conical screen, and the number of the conical grinding blocks corresponds to the number of the conical screen.
[0010] The above technical solution uses two conical screens with apertures ranging from large to small to screen plastic powder of different fineness.
[0011] As a further improvement to the above solution, the surface of the fixed cover is fixedly connected to the inner wall of the cylinder, and the bottom of the grinding roller is in contact with the upper surface of the fine screen.
[0012] The above technical solution ensures the fineness of the powder grinding by using a finer screen with a smaller aperture than the conical screen below.
[0013] As a further improvement to the above solution, the surface of the fine screen is fixedly connected to the inner wall of the cylinder, and the bottom of the cylinder is tapered.
[0014] With the above technical solution, the bottom of the cylinder is conical, which facilitates the rapid discharge of the ground plastic powder.
[0015] As a further improvement to the above solution, the wobbling assembly includes a mounting ring, the bottom of which is fixedly connected to a plurality of support springs, and the ends of the plurality of support springs away from the mounting ring are fixedly connected to a fixing ring.
[0016] Through the above technical solution, the elastic support of the supporting spring causes the cylinder to shake during the grinding process, which prevents the material from clogging in the sieve holes of the conical screen and the fine screen, ensuring stable operation of the equipment and preventing blockage during discharge.
[0017] As a further improvement to the above solution, the inner wall of the mounting ring is fixedly connected to the surface of the cylinder, and the surface of the fixing ring is fixedly connected to the inner wall of the outer cover.
[0018] Through the above technical solution, the fixed ring is fixedly connected to the outer cover, thus providing support for the cylinder.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] This invention features a grinding assembly. Specifically, a motor drives a transmission rod to rotate, which in turn rotates two conical grinding blocks. These blocks grind the material inside a conical screen. The material inside the upper conical screen is ground and then falls through the screen holes into the lower conical screen for secondary grinding. The material inside the lower conical screen falls through the apertures onto a fine screen. As the transmission rod rotates, it drives a grinding roller to perform a circular motion, further grinding the material on the fine screen. This improves the grinding effect and efficiency.
[0021] This invention incorporates a shaking component, specifically through the elastic support of a support spring, which causes the cylinder to shake during the grinding process. This prevents material from clogging the conical and fine screen openings, ensuring stable equipment operation. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic cross-sectional view of the present invention.
[0024] Figure 3 This is a schematic diagram of the grinding assembly structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the shaking component structure of this utility model;
[0026] Figure 5 This is a schematic diagram of the structure of this utility model viewed from below.
[0027] Explanation of key symbols:
[0028] 1. Cylinder; 2. Feed pipe; 3. Discharge pipe; 4. Grinding assembly; 401. Motor; 402. Transmission rod; 403. Conical grinding block; 404. Conical screen; 405. Fixing cover; 406. Grinding roller; 407. Fine screen; 5. Shaking assembly; 501. Mounting ring; 502. Support spring; 503. Fixing ring; 6. Outer cover; 7. Support column. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0030] Example:
[0031] Please combine Figure 1-5 This embodiment of a secondary grinding device for plastic powder production includes a cylinder 1, a feed pipe 2 connected to the top of the cylinder 1, a discharge pipe 3 connected to the bottom of the feed pipe 2, a grinding component 4 provided in the middle of the cylinder 1, a shaking component 5 provided on the surface of the cylinder 1, an outer cover 6 provided on the outside of the cylinder 1, and a plurality of support columns 7 fixedly connected to the bottom of the outer cover 6.
[0032] The grinding assembly 4 includes a motor 401. A transmission rod 402 is fixedly connected to the output end of the motor 401. A conical grinding block 403 is fixedly connected to the surface of the transmission rod 402. A conical screen 404 is rotatably connected to the surface of the transmission rod 402. Two conical screens 404 are provided, and a fixing cover 405 is fixedly connected between the two conical screens 404. A grinding roller 406 is fixedly connected to the bottom of the transmission rod 402. A fine screen 407 is provided at the bottom of the grinding roller 406. When the motor 401 is started, the motor 401 drives the transmission rod 402... 2. The transmission rod 402 rotates, driving the two conical grinding blocks 403 to rotate. The two conical grinding blocks 403 grind the material inside the conical screen 404. After grinding, the material inside the upper conical screen 404 falls through the screen holes into the lower conical screen 404, achieving secondary grinding. The material inside the lower conical screen 404 falls through the aperture onto the fine screen 407. When the transmission rod 402 rotates, it drives the grinding roller 406 to make a circular motion, grinding the material on the fine screen 407 again, improving the grinding effect and efficiency.
[0033] The bottom of the motor 401 is fixedly connected to the top of the cylinder 1. The surface of the transmission rod 402 is in contact with the surface of the inner conical grinding block 403 of the cylinder 1 and the inner wall of the conical screen 404. The number of conical grinding blocks 403 corresponds to the number of conical screens 404.
[0034] The surface of the fixed cover 405 is fixedly connected to the inner wall of the cylinder 1, and the bottom of the grinding roller 406 is in contact with the upper surface of the fine screen 407.
[0035] The surface of the fine screen 407 is fixedly connected to the inner wall of the cylinder 1, and the bottom of the cylinder 1 is conical.
[0036] The shaking assembly 5 includes a mounting ring 501. Several support springs 502 are fixedly connected to the bottom of the mounting ring 501. A fixing ring 503 is fixedly connected to the end of the support springs 502 away from the mounting ring 501. Through the elastic support of the support springs 502, the cylinder 1 will shake during the grinding process, which will prevent the material from clogging the screen holes of the conical screen 404 and the fine screen 407 and ensure the stable operation of the equipment.
[0037] The inner wall of the mounting ring 501 is fixedly connected to the surface of the cylinder 1, and the surface of the fixing ring 503 is fixedly connected to the inner wall of the outer cover 6.
[0038] The implementation principle of the secondary grinding device for plastic powder production in this embodiment is as follows: During use, material is added to the inside of the cylinder 1 through the feed pipe 2. The material falls into the upper conical screen 404. The motor 401 is started, driving the transmission rod 402 to rotate. The transmission rod 402 drives two conical grinding blocks 403 to rotate, grinding the material inside the conical screen 404. After grinding, the material inside the upper conical screen 404 falls through the screen holes into the lower conical screen 404, achieving secondary grinding. The material inside the lower conical screen 404 falls through the aperture onto the fine screen 407. When the transmission rod 402 rotates, it drives the grinding roller 406 to perform a circular motion, further grinding the material on the fine screen 407, improving the grinding effect and efficiency. Through the elastic support of the support spring 502, the cylinder 1 will shake during the grinding process, preventing material from clogging in the screen holes of the conical screen 404 and the fine screen 407, ensuring stable operation of the equipment.
[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A secondary grinding device for plastic powder production, characterized in that, Includes a cylinder (1), the top of the cylinder (1) is connected to a feed pipe (2), the bottom of the feed pipe (2) is connected to a discharge pipe (3), a grinding component (4) is provided in the middle of the cylinder (1), a shaking component (5) is provided on the surface of the cylinder (1), an outer cover (6) is provided on the outside of the cylinder (1), and several support columns (7) are fixedly connected to the bottom of the outer cover (6). The grinding assembly (4) includes a motor (401), a transmission rod (402) is fixedly connected to the output end of the motor (401), a conical grinding block (403) is fixedly connected to the surface of the transmission rod (402), a conical screen (404) is rotatably connected to the surface of the transmission rod (402), two conical screens (404) are provided, a fixing cover (405) is fixedly connected between the two conical screens (404), a grinding roller (406) is fixedly connected to the bottom of the transmission rod (402), and a fine screen (407) is provided at the bottom of the grinding roller (406).
2. The secondary grinding device for plastic powder production as described in claim 1, characterized in that: The bottom of the motor (401) is fixedly connected to the top of the cylinder (1), and the surface of the transmission rod (402) is rotatably connected to the inner wall of the cylinder (1).
3. The secondary grinding device for plastic powder production as described in claim 1, characterized in that: The surface of the conical grinding block (403) is in contact with the inner wall of the conical screen (404), and the number of the conical grinding blocks (403) corresponds to the number of the conical screen (404).
4. The secondary grinding device for plastic powder production as described in claim 1, characterized in that: The surface of the fixed cover (405) is fixedly connected to the inner wall of the cylinder (1), and the bottom of the grinding roller (406) is in contact with the upper surface of the fine screen (407).
5. The secondary grinding device for plastic powder production as described in claim 4, characterized in that: The surface of the fine screen (407) is fixedly connected to the inner wall of the cylinder (1), and the bottom of the cylinder (1) is conical.
6. The secondary grinding device for plastic powder production as described in claim 1, characterized in that: The swaying assembly (5) includes a mounting ring (501), and a plurality of support springs (502) are fixedly connected to the bottom of the mounting ring (501). A fixing ring (503) is fixedly connected to one end of the plurality of support springs (502) away from the mounting ring (501).
7. The secondary grinding device for plastic powder production as described in claim 6, characterized in that: The inner wall of the mounting ring (501) is fixedly connected to the surface of the cylinder (1), and the surface of the fixing ring (503) is fixedly connected to the inner wall of the outer cover (6).