Layered screening machine for plastic particles
By designing a double-layer screening plate and an intermittent feeding assembly, the problems of poor screening effect and material accumulation in existing plastic granule screening machines are solved, achieving accurate classification and efficient screening of plastic granules.
Patent Information
- Application Number
- CN202520487589.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Existing plastic granule screening machines can only perform one screening operation, resulting in poor screening effect, difficulty in accurate classification, and easy accumulation of materials during feeding, which reduces screening quality.
It adopts a double-layer screening plate structure and intermittent feeding component. The screening plate is driven to shake by gear and rack meshing to achieve two-stage screening. Intermittent feeding is achieved by the cooperation of baffles and pull ropes to prevent material accumulation.
It enables precise classification of plastic granules into three categories: large, medium, and small, improving screening efficiency and quality, preventing material accumulation, and enhancing screening effectiveness.
Smart Images
Figure CN223864100U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening machine technology, specifically a layered screening machine for plastic granules. Background Technology
[0002] Plastic granules refer to granular plastics, generally classified into more than 200 types, with further subdivisions reaching thousands. Common types of plastic granules include general-purpose plastics, engineering plastics, and specialty plastics. In the production of plastic granules, strip-shaped plastics need to be cut into granules. After cutting, to ensure the uniformity of the plastic granules' size, they need to be screened by a screening machine to guarantee the uniformity of the plastic granules' size and facilitate subsequent processing and use.
[0003] A patent with authorization announcement number "CN218700449U" discloses a horizontal plastic granule screening machine, including a base, a housing fixedly connected to the top of the base, a motor fixedly installed at the bottom of the inner cavity of the housing, and an eccentric turntable movably installed at the output end of the motor. This invention injects material into the inner cavity of the housing through a feeding port, starts the motor via a PLC controller, and drives the eccentric turntable. The eccentric turntable's circular motion intermittently moves a movable plate upwards, which in turn moves a support frame, which in turn moves a filter plate horizontally upwards. This solves the problem that existing plastic granule screening methods often retain unqualified materials inside, making cleaning inconvenient and affecting subsequent screening time.
[0004] However, this device has the following shortcomings:
[0005] 1. After plastic pellets are produced and granulated, they need to be classified according to their size. The above-mentioned device can only screen the plastic pellets once, and the screening effect is poor, making it difficult to accurately classify the plastic pellets.
[0006] 2. The above-mentioned device failed to control the intermittent feeding of materials during screening, causing the materials to rush down and accumulate in one place, making it difficult to screen them thoroughly, thus reducing the screening quality of the device and the plastic granules. Utility Model Content
[0007] The purpose of this invention is to provide a layered screening machine for plastic granules to solve the existing problems mentioned in the background art.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a layered screening machine for plastic granules, comprising a processing chamber, a feeding hopper at the top of the processing chamber, a feeding pipe connected to the processing chamber at the bottom of the feeding hopper, three sets of collecting troughs at the bottom of the processing chamber, a fixed plate on one side of the bottom of the processing chamber, buffers A on both one side of the processing chamber and one side of the fixed plate, a screening plate A between two sets of buffers A, buffers B on the top of one side of the processing chamber and the top of the fixed plate, a screening plate B on the top of both sets of buffers B, a motor at one end of the processing chamber, a rotating rod at the output end of the motor, and a cam that cooperates with the screening plate A at one end of the rotating rod;
[0009] A rotating shaft is fitted in the middle of one end of the processing chamber. Gears are provided at both ends of the outer side of the rotating shaft. A rack A that meshes with the gears is provided in the middle of the top two ends of the screening plate A. A rack B that meshes with the gears is provided in the middle of the bottom two ends of the screening plate B. An intermittent feeding component is provided on one side of the top of the processing chamber.
[0010] Preferably, the intermittent feeding assembly includes a baffle, a slider, a pull rope, a return spring, a chute, and a guide wheel. A chute is provided on one side of the top of the processing chamber, and a slider is slidably connected to the inner side of the chute. A baffle that cooperates with the feed pipe is provided at the bottom of the slider. A return spring is provided on one side of the slider, and a pull rope that connects to the screening plate B is provided on one side of the baffle. A guide wheel that cooperates with the pull rope is provided on one side of the top of the processing chamber, which can intermittently open the feed pipe for intermittent feeding.
[0011] Preferably, the buffer A includes a guide groove, a guide rod, a sleeve block, and a buffer spring. The processing chamber has guide grooves on one side and the fixed plate on one side. Guide rods are provided on the inner side of the two sets of guide grooves, and sleeve blocks are provided on the outer side of the two sets of guide rods. Buffer springs are provided on the top of the two sets of sleeve blocks for guiding and buffering the screening plate A.
[0012] Preferably, the buffer B includes an outer sleeve, an inner sleeve, and a compression spring. The top of one side of the processing chamber and the top of the fixed plate are provided with an outer sleeve, and the inner sleeve is sleeved on the inner side of the two sets of outer sleeves, while the compression spring is sleeved on the outer side of the two sets of inner sleeves, which are used to buffer the screening plate B so that it can swing up and down and promote screening efficiency.
[0013] Preferably, a flow guide box is provided in the middle of the bottom of the screening plate B, and flow guide plates are provided on both sides of the bottom of the screening plate A, for guiding the material after screening.
[0014] Preferably, a discharge port is provided on one side of the bottom of the screening plate A, and the plastic particles that cannot be screened can fall into the left collection trough through the discharge port by the guide of the screening plate A.
[0015] Preferably, one end of the processing chamber is provided with three sets of chamber doors corresponding to three sets of material collection troughs, which can be opened to remove the collected materials from the material collection troughs.
[0016] Compared with the prior art, the beneficial effects of this utility model are: the plastic particle layer screening machine;
[0017] 1. Through the cooperation between screening plate A, buffer A, buffer B, rack A, gear, screening plate B and rack B, the device can perform two screenings on plastic particles through screening plate A and screening plate B, so that the plastic particles can be divided into three categories of large, medium and small according to particle size, and the classification is more detailed. At the same time, a set of driving force can drive screening plate A and screening plate B to shake synchronously, which can promote the rapid rolling of materials and speed up the screening speed.
[0018] 2. Through the cooperation of the baffle, slider, pull rope, return spring, chute and guide wheel, when the device drives the screening plate B to shake, the baffle can be opened intermittently by pulling the pull rope, so that the plastic particles in the feed hopper are fed intermittently, preventing the material from piling up and failing to be screened, thus improving the screening quality of the device. Attached Figure Description
[0019] Figure 1 This is a perspective view of the present utility model;
[0020] Figure 2 This is a front sectional view of the present invention;
[0021] Figure 3 This is a side sectional view of the present invention;
[0022] Figure 4 For the present utility model Figure 2 An enlarged schematic diagram of the structure at point A.
[0023] In the diagram: 1. Processing chamber; 2. Cam; 3. Screening plate A; 4. Fixed plate; 5. Buffer A; 6. Buffer B; 7. Rack A; 8. Gear; 9. Feed hopper; 10. Screening plate B; 11. Guide box; 12. Rack B; 13. Collection trough; 14. Feed pipe; 15. Baffle; 16. Sliding block; 17. Pull rope; 18. Return spring; 19. Slide groove; 20. Motor; 21. Rotating rod; 22. Rotating shaft; 23. Guide wheel. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-4 The present invention provides an embodiment of a plastic granule layered screening machine, comprising a processing chamber 1, a feeding hopper 9 at the top of the processing chamber 1, a feeding pipe 14 connected to the processing chamber 1 at the bottom of the feeding hopper 9, three sets of collecting troughs 13 at the bottom inside the processing chamber 1, a fixed plate 4 on one side of the bottom inside the processing chamber 1, buffers A5 on one side inside the processing chamber 1 and one side of the fixed plate 4, a screening plate A3 between the two sets of buffers A5, buffers B6 on the top of one side inside the processing chamber 1 and the top of the fixed plate 4, a screening plate B10 on the top of the two sets of buffers B6, a motor 20 at one end of the processing chamber 1, a rotating rod 21 at the output end of the motor 20, and a cam 2 that cooperates with the screening plate A3 at one end of the rotating rod 21.
[0026] A rotating shaft 22 is fitted in the middle of one end of the processing chamber 1. Gears 8 are provided at both ends of the outer side of the rotating shaft 22. A rack A7 that meshes with the gear 8 is provided in the middle of both ends of the top of the screening plate A3. A rack B12 that meshes with the gear 8 is provided in the middle of both ends of the bottom of the screening plate B10. An intermittent feeding component is provided on one side of the top of the processing chamber 1.
[0027] The intermittent feeding assembly includes a baffle 15, a slider 16, a pull rope 17, a return spring 18, a chute 19, and a guide wheel 23. A chute 19 is provided on one side of the top of the processing chamber 1. A slider 16 is slidably connected to the inside of the chute 19. A baffle 15 that cooperates with the feed pipe 14 is provided at the bottom of the slider 16. A return spring 18 is provided on one side of the slider 16. A pull rope 17 that is connected to the screening plate B10 is provided on one side of the baffle 15. A guide wheel 23 that cooperates with the pull rope 17 is provided on one side of the top of the processing chamber 1. The feed pipe 14 can be opened intermittently for intermittent feeding.
[0028] Furthermore, the buffer A5 includes guide grooves, guide rods, sleeve blocks, and buffer springs. Guide grooves are provided on one side of the processing chamber 1 and one side of the fixed plate 4. Guide rods are provided on the inner side of the two sets of guide grooves, and sleeve blocks are provided on the outer side of the two sets of guide rods. Buffer springs are provided on the top of the two sets of sleeve blocks for guiding and buffering the screening plate A3.
[0029] Furthermore, the buffer B6 includes an outer sleeve, an inner sleeve, a compression spring, and an outer sleeve is provided on the top of one side of the processing chamber 1 and the top of the fixed plate 4. The inner sleeve is fitted inside the two sets of outer sleeves, and the compression spring is fitted outside the two sets of inner sleeves to buffer the screening plate B10, allowing it to swing up and down and improve screening efficiency.
[0030] Furthermore, a flow guide box 11 is provided in the middle of the bottom of the screening plate B10, and flow guide plates are provided on both sides of the bottom of the screening plate A3 to guide the material after screening. The plastic particles filtered by the screening plate B10 can fall into the flow guide box 11. The flow guide box 11 can guide the material to the far right of the screening plate A3, ensuring that the screening path of the plastic particles is long enough and improving the screening effect.
[0031] Furthermore, a discharge port is provided on one side of the bottom of the screening plate A3, and unscreened plastic particles can fall from the discharge port into the left collection trough 13 through the guide of the screening plate A3.
[0032] Furthermore, one end of the processing chamber 1 is equipped with three sets of chamber doors corresponding to the three sets of material collection troughs 13, which can be opened to remove the collected materials from the material collection troughs 13.
[0033] Working principle: When using this device, the motor 20 can be started, and then plastic granules can be added into the feed hopper 9. The plastic granules can fall onto the screening plate B10 through the feed pipe 14. The motor 20 can drive the rotating rod 21 to rotate, and then the rotating rod 21 can drive the cam 2, so that the cam 2 can intermittently push the screening plate A3 to shake up and down. When the screening plate A3 shakes up and down, the rack A7 can drive the gear 8 to rotate. Then, the gear 8, through meshing with the rack B12, can drive the screening plate B10 to shake synchronously in the opposite direction to the screening plate A3, and the granules fall onto the top of the screening plate B10. The plastic granules can roll to one side under the force of shaking. Larger plastic granules can fall into the right set of collection troughs 13 through the guide of the screening plate B10. The plastic granules filtered by the screening plate B10 can fall into the top of the screening plate A3 through the guide box 11. Then they are screened again through the screening plate A3. Smaller plastic granules can fall into the middle set of collection troughs 13 through the screening of the screening plate A3. Medium-sized plastic granules can fall into the left collection trough 13 from the discharge port through the guide of the screening plate A3. Thus, the plastic granules are screened into three categories according to large, medium and small.
[0034] When the screening plate B10 shakes up and down, the baffle 15 can be pulled back and forth by the pull rope 17, so that the feed pipe 14 can be opened intermittently, so that the plastic particles fall intermittently, preventing the plastic particles from accumulating together and failing to be screened.
[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0036] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A layered screening machine for plastic granules, comprising a processing chamber (1), characterized in that: The processing chamber (1) is provided with a feeding hopper (9) at the top and a feeding pipe (14) connected to the processing chamber (1) at the bottom of the feeding hopper (9). The processing chamber (1) is provided with three sets of material collection troughs (13) at the bottom inside. The processing chamber (1) is provided with a fixed plate (4) on one side of the bottom inside. The processing chamber (1) is provided with a buffer A (5) on one side inside and one side of the fixed plate (4). A screening plate A (3) is provided between the two sets of buffers A (5). The processing chamber (1) is provided with a buffer B (6) on the top of one side inside and the top of the fixed plate (4). The two sets of buffers B (6) are provided with a screening plate B (10) on the top of the two sets of buffers B (6). The processing chamber (1) is provided with a motor (20) at one end. The output end of the motor (20) is provided with a rotating rod (21). The rotating rod (21) is provided with a cam (2) that cooperates with the screening plate A (3) at one end. A rotating shaft (22) is fitted in the middle of one end of the processing chamber (1). Gears (8) are provided at both ends of the outer side of the rotating shaft (22). A rack A (7) that meshes with the gears (8) is provided in the middle of the top two ends of the screening plate A (3). A rack B (12) that meshes with the gears (8) is provided in the middle of the bottom two ends of the screening plate B (10). An intermittent feeding component is provided on one side of the top of the processing chamber (1).
2. The plastic granule stratification screening machine according to claim 1, characterized in that: The intermittent feeding assembly includes a baffle (15), a slider (16), a pull rope (17), a return spring (18), a chute (19), and a guide wheel (23). A chute (19) is provided on one side of the top of the processing chamber (1). A slider (16) is slidably connected to the inside of the chute (19). A baffle (15) that cooperates with the feed pipe (14) is provided at the bottom of the slider (16). A return spring (18) is provided on one side of the slider (16). A pull rope (17) that connects to the screening plate B (10) is provided on one side of the baffle (15). A guide wheel (23) that cooperates with the pull rope (17) is provided on one side of the top of the processing chamber (1).
3. The plastic granule stratification screening machine according to claim 1, characterized in that: The buffer A (5) includes a guide groove, a guide rod, a sleeve block and a buffer spring. The processing chamber (1) has a guide groove on one side and the fixed plate (4) on one side. The inner side of the two sets of guide grooves is provided with a guide rod, and the outer side of the two sets of guide rods is provided with a sleeve block. The top of the two sets of sleeve blocks is provided with a buffer spring.
4. The plastic granule stratification screening machine according to claim 1, characterized in that: The buffer B (6) includes an outer sleeve, an inner sleeve, and a compression spring. The top of one side of the processing chamber (1) and the top of the fixing plate (4) are provided with an outer sleeve, and the inner sleeve is sleeved on the inner side of the two sets of outer sleeves, while the compression spring is sleeved on the outer side of the two sets of inner sleeves.
5. A layered screening machine for plastic granules according to claim 1, characterized in that: A flow guide box (11) is provided in the middle of the bottom of the screening plate B (10), and flow guide plates are provided on both sides of the bottom of the screening plate A (3).
6. A layered screening machine for plastic granules according to claim 1, characterized in that: A discharge port is provided on one side of the bottom of the screening plate A (3).
7. A layered screening machine for plastic granules according to claim 1, characterized in that: The processing chamber (1) has three sets of chamber doors at one end, corresponding to the three sets of material collection troughs (13).