Plastic particle screening device

Abstract

The utility model discloses a plastic particle screening device, which relates to the technical field of plastic particles, and comprises a box body and a feed opening, the inner wall of the left side of the box body is provided with a first groove, one end of a first screening plate is connected in the first groove in a sliding manner, the right side wall of the box body is provided with a first through groove, and the first through groove is provided with a second through groove. A first through groove is formed in one end of the box body, the other end of the box body is slidably connected into the first through groove, a second groove is formed in the bottom end of the first through groove, one end of the second screen plate is slidably connected into the second groove, a second through groove is formed in the bottom end of the first groove, and the other end of the second screen plate is slidably connected into the second through groove; a rotating shaft is fixedly connected between the first sieve plate and the second sieve plate, and a semi-cylinder is fixedly connected to the rotating shaft; the motor is started to drive the rotating shaft to rotate, and the semi-cylinder on the rotating shaft intermittently impacts the first sieve plate and the second sieve plate, so that the first sieve plate and the second sieve plate generate a vibration effect.

Description

Technical Field

[0001] This utility model relates to the field of plastic granule technology, specifically to a plastic granule screening device. Background Technology

[0002] A plastic granule screening device is a specialized piece of equipment for screening and separating plastic granules. Its design and operating principle are designed to efficiently and accurately complete the screening task of plastic granules.

[0003] For example, an existing patent (publication number: CN215703174U) discloses a drying and screening device for plastic granule raw materials. The raw materials to be dried and screened are placed into the device in order from small to large, and the plastic raw materials fall into the drying oven through the sieve in order.

[0004] However, the screening device designed above still has some drawbacks in actual use: although the stencils set in the device can screen different plastics and further separate plastic particles of different sizes for drying at different temperatures, relying solely on stencil screening means that in actual use, plastic particles, especially irregularly shaped or sticky particles, are prone to clogging the sieve holes of the stencils. Once clogging occurs, subsequent particles cannot fall normally, affecting the entire screening and drying process. Furthermore, cleaning the clogged stencils may require machine shutdown, increasing downtime and maintenance costs.

[0005] To address this problem, we designed a plastic pellet screening device. Utility Model Content

[0006] The purpose of this invention is to provide a plastic granule screening device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a plastic granule screening device, including a box and a feeding port. A first screen plate and a second screen plate are sequentially arranged inside the box. A first groove is formed on the left inner wall of the box, and one end of the first screen plate is slidably connected to the first groove. A first through groove is formed on the right side wall of the box, and the other end of the box is slidably connected to the first through groove. A first spring is fixedly connected to the bottom left side of the box, and a second spring is fixedly connected to the bottom right side of the box. The bottom ends of the first and second springs are connected to the top of the second screen plate. The first through groove has a second groove at its bottom end. One end of the second screen plate is slidably connected to the second groove. The second through groove has a second groove at its bottom end. The other end of the second screen plate is slidably connected to the second through groove. The bottom ends of the left and right sides of the second screen plate are also fixedly connected to a second spring and a first spring, respectively. A rotating shaft is rotatably mounted on the housing between the first screen plate and the second screen plate via a bearing. A semi-cylinder is fixedly connected to the rotating shaft. One end of the rotating shaft is connected to a motor. The rotating end of the motor is fixedly connected to the rotating shaft. The motor is fixedly connected to one side wall of the housing.

[0008] Furthermore, one end of the rotating shaft is connected to a motor, which is fixedly connected to one side wall of the housing.

[0009] Furthermore, there are multiple semi-cylinders, which are uniformly and fixedly connected to the rotating shaft.

[0010] Furthermore, both the first sieve plate and the second sieve plate are provided with multiple sieve holes, and the sieve holes on the first sieve plate are larger than the sieve holes on the second sieve plate.

[0011] Furthermore, a collection chamber is provided at the bottom end of the second sieve plate, the collection chamber is fixedly connected to the bottom of the box body, and the other end of the second spring and the first spring, which are fixedly connected to the bottom end of the second sieve plate, are fixedly connected to the top end of the collection chamber.

[0012] Furthermore, both the first sieve plate and the second sieve plate are inclined, the length of the first spring is greater than the length of the second spring, the end of the first sieve plate near the first through groove is lower than the end near the first groove, and the end of the second sieve plate near the second through groove is lower than the end near the second groove.

[0013] Furthermore, a first collection box is installed at the bottom of the first channel, and the first collection box is fixedly connected to the outer wall of the box body. A second collection box is installed at the bottom of the second channel, and the second collection box is fixedly connected to the outer wall of the box body.

[0014] Furthermore, a drawer is slidably connected to the collection chamber, and a handle is fixedly connected to the outside of the drawer.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This device effectively solves the clogging problem by setting a rotating shaft and a semi-cylinder between the first and second screen plates, driven by a motor. When irregularly shaped or sticky particles clog the screen holes, the motor drives the semi-cylinder to rotate, and the semi-cylinder intermittently impacts the screen plate, generating a vibration effect. This design avoids the situation where subsequent particles cannot fall normally due to clogging, allowing the screening process to continue without the need to stop to clean the clogged screen plates as in existing devices, thus greatly reducing equipment downtime and improving production efficiency.

[0017] 2. This device adopts a double-layer sieve plate structure, and the sieve holes on the first sieve plate are larger than those on the second sieve plate, which can classify and screen plastic particles. This design can more finely separate plastic particles of different sizes. Compared with existing devices that rely solely on stencil screening, it improves screening accuracy and can better meet the requirements of different production processes for plastic particle size. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the box body of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the image;

[0021] Figure 4 This utility model Figure 2 Enlarged view of point B in the image;

[0022] Figure 5 This is a top view of the cross-section of the present invention.

[0023] In the diagram: 1. Box body; 2. Feed port; 3. First screen plate; 4. Second screen plate; 5. First groove; 6. First through groove; 7. First spring; 8. Second spring; 9. Second groove; 10. Second through groove; 11. Collection chamber; 12. Rotating shaft; 13. Semi-cylinder; 14. Motor; 15. First collection box; 16. Second collection box; 17. Drawer. 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 2 , Figure 3 and Figure 4 This utility model provides a technical solution: a plastic granule screening device, including a box body 1 and a feeding port 2. A first screen plate 3 and a second screen plate 4 are arranged sequentially from top to bottom inside the box body 1. A first groove 5 is formed on the left inner wall of the box body 1, and one end of the first screen plate 3 is slidably connected to the first groove 5. A first through groove 6 is formed on the right side wall of the box body 1, and the other end of the box body 1 is slidably connected to the first through groove 6. A first spring 7 is fixedly connected to the bottom left side of the box body 1, and a second spring 8 is fixedly connected to the bottom right side of the box body 1. The bottom ends of the first spring 7 and the second spring 8 are fixedly connected to the top end of the second screen plate 4. The first through groove 6... A second groove 9 is provided at the bottom end, and one end of the second screen plate 4 is slidably connected in the second groove 9. A second through groove 10 is provided at the bottom end of the first groove 5, and the other end of the second screen plate 4 is slidably connected in the second through groove 10. A second spring 8 and a first spring 7 are also fixedly connected to the bottom ends of the left and right sides of the second screen plate 4, respectively. A rotating shaft 12 is rotatably installed on the box body 1 at the position between the first screen plate 3 and the second screen plate 4 through a bearing. A semi-cylinder 13 is fixedly connected to the rotating shaft 12. A motor 14 is connected to one end of the rotating shaft 12. The rotating end of the motor 14 is fixedly connected to the rotating shaft 12. The motor 14 is fixedly connected to one side wall of the box body 1.

[0026] In specific implementation, one end of the first sieve plate 3 slides in the first groove 5 on the inner wall of the left side of the box 1, and the other end slides in the first through groove 6 on the right side wall, and is connected to the second sieve plate 4 through the first spring 7 and the second spring 8; one end of the second sieve plate 4 slides in the second groove 9 at the bottom of the first through groove 6, and the other end slides in the second through groove 10 at the bottom of the first groove 5, and its left and right sides and bottom are also connected to springs. This spring connection and sliding connection method allows the sieve plate to vibrate and move within a certain range, providing the possibility for the movement of particles and the adjustment of the sieve plate itself during the screening process; when the motor 14 starts, it can provide rotational power to the rotating shaft 12, thereby driving the semi-cylinder 13 to rotate, realizing the vibration of the sieve plate to clear the blocked sieve holes.

[0027] See Figure 2 There are multiple semi-cylinders 13, which are evenly fixedly connected to the rotating shaft 12.

[0028] In practice, multiple semi-cylinders 13 are evenly fixed on the rotating shaft 12. When the rotating shaft 12 rotates, each semi-cylinder 13 can impact the first screen plate 3 and the second screen plate 4 in sequence. This evenly distributed design can make the impact force on the screen plate more uniform, so that the entire screen plate vibrates more stably and evenly when it is vibrating to clear blockages, avoiding the problem of screen plate damage or poor vibration effect caused by uneven local force.

[0029] See Figure 5 The first sieve plate 3 and the second sieve plate 4 are each provided with multiple sieve holes, and the sieve holes on the first sieve plate 3 are larger than the sieve holes on the second sieve plate 4.

[0030] In practice, when plastic granules enter from the feed port 2 and fall onto the first screen plate 3, larger granules cannot pass through the screen holes of the first screen plate 3, while smaller granules can pass through and fall onto the second screen plate 4. Further screening is carried out on the second screen plate 4, and even finer granules pass through the screen holes of the second screen plate 4, thereby achieving the grading and screening of plastic granules of different sizes.

[0031] See Figure 2 The bottom end of the second sieve plate 4 is provided with a collection chamber 11, which is fixedly connected to the bottom of the box body 1. The other ends of the second spring 8 and the first spring 7, which are fixedly connected to the bottom end of the second sieve plate 4, are fixedly connected to the top end of the collection chamber 11.

[0032] In practice, the collection chamber 11 is located at the bottom of the second sieve plate 4 and fixed to the bottom of the box body 1. The collection chamber 11 is used to collect the smallest particles that pass through the sieve holes of the second sieve plate 4.

[0033] See Figure 2 and Figure 5 The first sieve plate 3 and the second sieve plate 4 are both inclined. The length of the first spring 7 is greater than the length of the second spring 8. The end of the first sieve plate 3 near the first through groove 6 is lower than the end near the first groove 5. The end of the second sieve plate 4 near the second through groove 10 is lower than the end near the second groove 9.

[0034] In practice, this tilting setting and the difference in spring length make the end of the first screen plate 3 near the first through groove 6 lower than the end near the first groove 5, and the end of the second screen plate 4 near the second through groove 10 lower than the end near the second groove 9. During the screening process, the plastic particles will move towards the lower end along the tilted screen plate under the action of gravity and vibration. Larger particles move towards the first through groove 6 on the first screen plate 3, and smaller particles move towards the second through groove 10 on the second screen plate 4. This facilitates the smooth sliding of particles from the screen plate into the corresponding collection box, thereby improving screening efficiency.

[0035] See Figure 1 and Figure 2A first collection box 15 is installed at the bottom of the first channel 6 and is fixedly connected to the outer wall of the box 1. A second collection box 16 is installed at the bottom of the second channel 10 and is fixedly connected to the outer wall of the box 1.

[0036] In practice, the first collection box 15 installed at the bottom of the first channel 6 is fixed to the outer wall of the box 1 and is used to collect the largest particles that cannot pass through the sieve holes on the first sieve plate 3. The second collection box 16 installed at the bottom of the second channel 10 is fixed to the outer wall of the box 1 and is used to collect the larger particles that cannot pass through the sieve holes on the second sieve plate 4. They provide special collection containers for particles of different sizes after screening, making it convenient for operators to take out the screened particles later.

[0037] See Figure 1 A drawer 17 is slidably connected inside the collection chamber 11, and a handle is fixedly connected to the outside of the drawer 17.

[0038] In practice, after screening is completed, the operator can pull the handle to pull the drawer 17 out of the collection chamber 11, thereby conveniently taking out the smallest plastic particles collected in the drawer 17, realizing convenient collection and removal of the smallest particles.

[0039] Working principle: Raw materials enter the housing 1 through the feed inlet 2. Plastic granules first fall onto the first screen plate 3, where the largest granules remain. They then flow down the first screen plate 3 through the first channel 6 into the first collection box 15. Next, smaller granules falling through the screen holes of the first screen plate 3 fall onto the second screen plate 4. Particles that cannot pass through the screen holes of the second screen plate 4 flow down the second screen plate 4 through the second channel 10 into the second collection box 16. Finally, the smallest granules pass through the screen holes of the second screen plate 4. When irregularly shaped or sticky particles easily clog the sieve holes of the screen plate in the collection chamber 11, the motor 14 is turned on to drive the rotating shaft 12 to rotate. The semi-cylinder 13 on the rotating shaft 12 will intermittently impact the first sieve plate 3 and the second sieve plate 4, causing the first sieve plate 3 and the second sieve plate 4 to vibrate. After the screening process is completed, the operator can take out the largest and larger plastic particles screened out from the first collection box 15 and the second collection box 16, and pull out the smallest plastic particles from the drawer 17.

Claims

1. A plastic granule screening device, comprising a housing (1) and a discharge port (2), characterized in that, The box (1) is provided with a first sieve plate (3) and a second sieve plate (4) arranged sequentially from top to bottom. A first groove (5) is provided on the left inner wall of the box (1). One end of the first sieve plate (3) is slidably connected in the first groove (5). A first through groove (6) is provided on the right side wall of the box (1). The other end of the box (1) is slidably connected in the first through groove (6). A first spring (7) is fixedly connected to the bottom left side of the box (1). A second spring (8) is fixedly connected to the bottom right side of the box (1). The bottom ends of the first spring (7) and the second spring (8) are fixedly connected to the top end of the second sieve plate (4). A second groove (9) is provided at the bottom end of the first through groove (6). One end of the sieve plate (4) is slidably connected in the second groove (9). The bottom end of the first groove (5) is provided with a second through groove (10). The other end of the second sieve plate (4) is slidably connected in the second through groove (10). The bottom ends of the left and right sides of the second sieve plate (4) are also fixedly connected with a second spring (8) and a first spring (7). The housing (1) is located between the first sieve plate (3) and the second sieve plate (4) and is rotatably mounted with a rotating shaft (12) through a bearing. A semi-cylinder (13) is fixedly connected on the rotating shaft (12). One end of the rotating shaft (12) is connected to a motor (14). The rotating end of the motor (14) is fixedly connected to the rotating shaft (12). The motor (14) is fixedly connected to one side wall of the housing (1).

2. The plastic granule screening device as described in claim 1, characterized in that: One end of the rotating shaft (12) is connected to a motor (14), and the motor (14) is fixedly connected to one side wall of the housing (1).

3. The plastic granule screening device as described in claim 2, characterized in that: The number of the semi-cylinders (13) is multiple, and the multiple semi-cylinders (13) are uniformly fixedly connected to the rotating shaft (12).

4. The plastic granule screening device as described in claim 3, characterized in that: The first sieve plate (3) and the second sieve plate (4) are each provided with a plurality of sieve holes, and the sieve holes on the first sieve plate (3) are larger than the sieve holes on the second sieve plate (4).

5. The plastic granule screening device as described in claim 4, characterized in that: The bottom end of the second sieve plate (4) is provided with a collection chamber (11), which is fixedly connected to the bottom of the box (1). The other ends of the second spring (8) and the first spring (7) fixedly connected to the bottom end of the second sieve plate (4) are fixedly connected to the top end of the collection chamber (11).

6. The plastic granule screening device as described in claim 5, characterized in that: The first sieve plate (3) and the second sieve plate (4) are both inclined. The length of the first spring (7) is greater than the length of the second spring (8). The end of the first sieve plate (3) near the first through groove (6) is lower than the end near the first groove (5). The end of the second sieve plate (4) near the second through groove (10) is lower than the end near the second groove (9).

7. The plastic granule screening device as described in claim 6, characterized in that: A first collection box (15) is installed at the bottom of the first through groove (6), and the first collection box (15) is fixedly connected to the outer wall of the box body (1). A second collection box (16) is installed at the bottom of the second through groove (10), and the second collection box (16) is fixedly connected to the outer wall of the box body (1).

8. The plastic granule screening device as described in claim 7, characterized in that: A drawer (17) is slidably connected inside the collection chamber (11), and a handle is fixedly connected to the outside of the drawer (17).

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