A plastic granule grading and screening device

Abstract

This utility model relates to the field of plastic processing technology, specifically to a plastic particle grading and screening device. The utility model includes: a screening assembly, with a first feeding trough on the feeding side of the screening assembly; a hinge fixedly installed on the front side wall of the first feeding trough, the hinge connecting to a rotating door; a handle fixedly installed on the other end of the rotating door away from the hinge; a connecting rope connected to the inner wall of the rotating door, the other end of the connecting rope connected to a scraper, the other end of the scraper rotatably mounted on the inner wall of the rear side wall of the first feeding trough. When the operator opens the rotating door, the rotating door pulls the scraper around the hinge axis via the connecting rope, and the scraper can scrape off the plastic particles remaining on the inner wall of the first feeding trough during rotation.

Description

Technical Field

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

[0002] In the plastics processing industry, after the screening components classify the plastic granules, different feed troughs receive and transport the granules of corresponding particle size specifications, realizing the classification, collection and subsequent processing of the granules.

[0003] However, in the actual application of existing plastic particle screening devices, after a single screening operation, due to the physical adhesion of the plastic particles themselves and the fact that the inner wall of the feeding trough is usually designed with a slight curvature to adapt to the particle flow requirements, some plastic particles are easily left on the inner wall of the feeding trough.

[0004] In most cases, these residual particles rely on manual handling by operators, or are simply ignored and carried over to the next screening operation. If the plastic particles screened later have different particle sizes than the previous batch, the residual particles from the previous batch will mix with the new batch during the screening process. This not only disrupts the uniformity of the particle size of the new batch but also leads to a significant decrease in the purity of the final screening product.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a plastic particle grading and screening device that can effectively solve the above-mentioned technical problems.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted: A plastic granule grading and screening device includes: a screening component, wherein a first feeding trough is provided on the feeding side of the screening component; A hinge is fixedly installed on the front side wall of the first feeding trough, and a rotating door is hinged to the hinge; a handle is fixedly installed on the other end of the rotating door away from the hinge. The inner wall of the rotating door is connected to a connecting rope, and the other end of the connecting rope is connected to a scraper. The other end of the scraper is rotatably installed on the inner wall of the rear side wall of the first feeding trough.

[0008] Furthermore, a through hole is provided on the rear side wall of the first feeding trough, and the connecting rope extends through the through hole to the outside of the first feeding trough. A counterweight is fixedly connected to one end of the connecting rope located on the outside of the rear side wall of the first feeding trough.

[0009] Furthermore, along the particle size classification direction, the feeding side of the screening component is also provided with a second feeding trough and a third feeding trough in sequence.

[0010] Furthermore, several limiting buckles are also provided on the outer wall of the rear side wall of the first feeding trough.

[0011] Compared with the prior art, the present invention has the following beneficial effects: When the operator opens the rotating door, the rotating door pulls the scraper around the hinge axis through the connecting rope. During the rotation of the scraper, the plastic particles remaining on the inner wall of the first feeding trough can be scraped off. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] Figure 1 This is a schematic diagram of the structure of a plastic particle grading and screening device according to the present invention; Figure 2 This is a top view of a plastic particle grading and screening device according to the present invention; Figure 3 This is a schematic diagram of the interior of the first feeding trough of a plastic granule grading and screening device according to the present invention; Figure 4 This is a schematic diagram of the rear structure of a plastic particle grading and screening device according to the present invention; Figure 5 This utility model relates to a plastic particle grading and screening device. Figure 3 A magnified view of part A in the diagram.

[0014] In the diagram: 1. Screening assembly; 2. First feeding chute; 3. Second feeding chute; 4. Third feeding chute; 5. Handle; 6. Hinge; 7. Connecting rope; 8. Counterweight; 9. Hinge shaft; 10. Rotating door; 11. Scraper; 12. Limit buckle. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0016] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships 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 on the scope of protection of this utility model. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0017] like Figures 1 to 5 As shown, this utility model relates to a plastic particle grading and screening device, including: a screening component 1, which can efficiently screen and grade plastic particles of different sizes to achieve classification of plastic particles.

[0018] Along the particle size classification direction, the feeding side of the screening component 1 is provided with a first feeding trough 2, a second feeding trough 3 and a third feeding trough 4 in sequence; wherein, the first feeding trough 2, the second feeding trough 3 and the third feeding trough 4 are respectively used to receive and transport plastic particles of different particle sizes after screening, so as to ensure that plastic particles of different sizes can be independently output through the corresponding feeding trough after screening, avoiding initial mixing.

[0019] After a single screening operation, due to the adhesion of plastic particles and the slight curvature of the inner wall of the feeding trough, some plastic particles may remain on the inner walls of the first feeding trough 2 and the second feeding trough 3. If these residual particles are not dealt with in time, when different particle sizes of plastic particles need to be screened in the future, the residual particles from the previous batch will mix with the particles from the new batch, resulting in a decrease in the purity of the final screening product and affecting the product quality.

[0020] To address the aforementioned residue issue, a hinge 6 is fixedly installed on the front side wall of the first feeding trough 2. The hinge 6 is hinged to one side of the rotating door 10, allowing the rotating door 10 to open and close flexibly around the hinge 6. A handle 5 is fixedly installed on the other end of the rotating door 10 away from the hinge 6. Operators can lock or unlock the rotating door 10 to the front side wall of the first feeding trough 2 using the handle 5. This facilitates daily inspection and maintenance and provides an operating opening for subsequent cleaning of residual particles.

[0021] A connecting rope 7 is connected to the inner wall of the rotating door 10, and a scraper 11 is connected to the other end of the connecting rope 7. The other end of the scraper 11 is rotatably mounted on the inner wall of the rear side wall of the first feeding trough 2 through the hinge shaft 9. The scraper 11 is located on the side opposite to the rotating door 10. A rubber sheet is provided at the bottom of the scraper 11. This ensures that when the rotating door 10 opens and closes, the scraper 11 can be driven to move synchronously through the connecting rope 7 to scrape the bottom plate of the second feeding trough 3.

[0022] A through hole is provided on the rear side wall of the first feeding trough 2. The connecting rope 7 extends through the through hole to the outside of the first feeding trough 2. A counterweight 8 is fixedly connected to one end of the connecting rope 7 on the outside of the rear side wall of the first feeding trough 2. The counterweight 8 is used to drive the scraper 11 to automatically reset. Several limit buckles 12 are also provided on the outer wall of the rear side wall of the first feeding trough 2 to limit the connecting rope 7. The limit buckles 12 can limit the connecting rope 7 extending to the outside to prevent the connecting rope 7 from deviating or tangling during the pulling process and ensure transmission stability.

[0023] The second feeding trough 3 is equipped with the same scraper 11 structure.

[0024] When the operator opens the rotating door 10, the rotating door 10 pulls the scraper 11 around the hinge shaft 9 via the connecting rope 7. During the rotation of the scraper 11, the residual plastic particles on the inner wall of the first feeding trough 2 can be scraped off. At the same time, when the rotating door 10 is closed, the counterweight 8 can drive the scraper 11 to reset via the connecting rope 7, realizing automatic cleaning of residual particles, effectively avoiding the mixing of plastic particles of different batches and different particle sizes, and significantly improving the purity of the screened product. The device can control the opening and closing of the rotating door 10 with only the handle 5, thereby driving the scraper 11 to complete the residual cleaning. There is no need for the operator to reach into the feeding trough for manual cleaning, which simplifies the operation process, reduces the intensity of manual labor, reduces cleaning time, and improves the overall operation efficiency.

[0025] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A plastic granule grading and screening device, characterized in that, include: Screening component (1), the screening component (1) is provided with a first feeding trough (2) on the feeding side; A hinge (6) is fixedly installed on the front side wall of the first feeding trough (2), and a rotating door (10) is hinged to the hinge (6); a handle (5) is fixedly installed on the other end of the rotating door (10) away from the hinge (6); The inner wall of the rotating door (10) is connected to a connecting rope (7), and the other end of the connecting rope (7) is connected to a scraper (11). The other end of the scraper (11) is rotatably installed on the inner wall of the rear side wall of the first feeding trough (2).

2. The plastic granule grading and screening device as described in claim 1, characterized in that, A through hole is provided on the rear side wall of the first feeding trough (2), and the connecting rope (7) extends through the through hole to the outside of the first feeding trough (2). A counterweight (8) is fixedly connected to one end of the connecting rope (7) located on the outside of the rear side wall of the first feeding trough (2).

3. The plastic granule grading and screening device as described in claim 1, characterized in that, Along the particle size classification direction, the feeding side of the screening component (1) is also provided with a second feeding trough (3) and a third feeding trough (4) in sequence.

4. The plastic granule grading and screening device as described in claim 1, characterized in that, Several limit buckles (12) are also provided on the outer wall of the rear side wall of the first feeding trough (2).

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