A waste plastic recycling granule screening device

Abstract

The utility model discloses a kind of waste plastic recovery granule screening devices, it is related to plastic recycling technical field, mainly solve the mixed problem of plastic of different density or different particle size when plastic is recycled, including belt conveyor and first support frame, particle size screening assembly is fixedly assembled in the first support frame inside, and the particle size screening assembly is set below the belt conveyor output end;Four output ports of the particle size screening assembly periphery are all fixedly connected with screw conveyor, and four screw conveyors are respectively connected with two plastic density screening assemblies and two waste barrels;Waste collecting pool is set with multiple, uniformly placed below two plastic density screening assemblies.

Description

Technical Field

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

[0002] Granulation screening for plastic recycling is a crucial step in the plastic recycling process, directly impacting the quality of recycled plastics and their subsequent processing performance. However, during the granulation process, waste plastics often exhibit particle size variations due to differences in shape and material. Different particle sizes result in different applications for plastic granules. Furthermore, even plastic granules made from different materials may have the same particle size but significant density differences. These issues all affect the quality of recycled plastic granules, thereby further impacting their usability.

[0003] Therefore, it is necessary to provide a waste plastic recycling pellet screening device to solve the above problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a waste plastic recycling particle screening device, including a belt conveyor and a first support frame, wherein a particle size screening component is fixedly assembled on the inner side of the first support frame, and the particle size screening component is located below the output end of the belt conveyor.

[0005] The four output ports on the periphery of the particle size screening component are all fixedly connected to screw conveyors, and the four screw conveyors are respectively connected to two plastic density screening components and two waste bins.

[0006] Multiple waste collection pools are provided and are evenly placed below two plastic density screening components.

[0007] Furthermore, preferably, the particle size separation component includes:

[0008] The second support frame is horizontally fixedly assembled inside the first support frame. Multiple vibration springs are provided on the upper surface of the second support frame, and a screening chamber is provided at the upper end of the vibration spring.

[0009] The vibrator is fixedly mounted on the second support frame, and its output end is set on the screening chamber.

[0010] The screening chamber is provided with a primary feed inlet at the upper end, and three screening screens are coaxially arranged inside the screening chamber. The three screening screens divide the screening chamber into four spaces, and each space is provided with a first discharge outlet at the bottom.

[0011] Furthermore, as a preferred embodiment, each of the three screening screens is provided with a discharge hole, and the relative height of the three screening screens is proportional to the diameter of the discharge hole.

[0012] Furthermore, as a preferred embodiment, the lower surface of the screening mesh is a planar structure, and its upper surface is a curved structure that slopes towards the first discharge port at its upper end. The inner wall of the bottom of the screening chamber is also a curved structure that slopes towards the first discharge port at its upper end.

[0013] Furthermore, as a preferred embodiment, each of the screening screens is rotatably equipped with a rotation anti-blocking device on its lower surface. The rotating blade of the rotation anti-blocking device is provided with an elastic column, the diameter of which is proportional to the aperture of the adjacent screening screen above it.

[0014] Furthermore, as a preferred embodiment, the four primary feed ports are asymmetrically distributed vertically, with the two primary feed ports in the middle connected to two plastic density screening components via a screw conveyor, and the other two primary feed ports connected to two waste bins via a screw conveyor.

[0015] Furthermore, preferably, the plastic density screening component includes:

[0016] The third support frame is horizontally fixedly mounted on the first support frame. An air separator is fixedly mounted on the top of the third support frame. An air power chamber is set on the side of the air separator near the screw conveyor. A secondary feed port is opened at the upper end of the air separator adjacent to the air power chamber. A protective baffle is set on the other side of the air separator. Multiple second discharge ports are set on the lower surface of the air separator, and the second discharge port adjacent to the air power chamber is located directly below the secondary feed port.

[0017] The wind turbine is fixedly installed inside the wind turbine housing.

[0018] Furthermore, as a preferred option, a plastic collection pool is placed below each second discharge port.

[0019] Compared with the prior art, this utility model provides a waste plastic recycling granule screening device, which has the following beneficial effects:

[0020] In this invention, the device achieves a high degree of automation, which can automatically and accurately screen waste plastic particles according to particle size and density, while removing defective waste plastic particles, thereby further ensuring the quality of waste plastic particles.

[0021] In this invention, the particle size screening component vibrates and screens the waste plastic particles that enter it. Particles that are too large or too small are transported to the corresponding waste bins for centralized processing via the corresponding screw conveyors. Suitable plastic particles are classified according to their particle size and processed separately.

[0022] In this invention, the plastic density screening component separates plastic particles with excessive density, insufficient density, and suitable density through air separation, and also grades the plastic particles with suitable density according to certain density standards. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a waste plastic recycling particle screening device.

[0024] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the particle size screening component;

[0025] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a plastic density screening component.

[0026] In the diagram: 1. Belt conveyor; 2. First support frame; 3. Particle size screening assembly; 4. Screw conveyor; 5. Plastic density screening assembly; 6. Waste bin; 7. Plastic collection pool; 31. Second support frame; 32. Vibrating spring; 33. Vibrator; 34. Screening bin; 35. Primary feed inlet; 36. Screening screen; 37. First discharge outlet; 38. Rotary anti-blocking device; 51. Third support frame; 52. Air separation bin; 53. Secondary feed inlet; 54. Second discharge outlet; 55. Air chamber; 56. Protective baffle; 57. Air generator. Detailed Implementation

[0027] Please see Figures 1-3 This utility model provides a waste plastic recycling particle screening device, including a belt conveyor 1 and a first support frame 2. A particle size screening component 3 is fixedly assembled on the inner side of the first support frame 2, and the particle size screening component 3 is arranged below the output end of the belt conveyor 1.

[0028] The four output ports on the periphery of the particle size screening component 3 are all fixedly connected to screw conveyors 4, and the four screw conveyors 4 are respectively connected to two plastic density screening components 5 and two waste bins 6.

[0029] Multiple plastic collection pools 7 are provided and are evenly placed below the two plastic density screening components 5;

[0030] In a preferred embodiment, the processed waste plastic is fed onto a belt conveyor 1 and transported to a particle size screening component 3. The particle size screening component 3 vibrates and screens the waste plastic particles entering it. Particles that are too large or too small are transported to the corresponding waste bins 6 for centralized processing via the corresponding screw conveyors 4. Suitable plastic particles are transported to the corresponding plastic density screening component 5 according to their particle size via the corresponding screw conveyors 4. The plastic density screening component 5 separates plastic particles that are too dense, too small, or have suitable density through air separation. At the same time, it also grades the plastic particles with suitable density according to a certain density standard.

[0031] Furthermore, the particle size screening component 3 includes:

[0032] The second support frame 31 is horizontally fixedly assembled inside the first support frame 2. Multiple vibration springs 32 are provided on the upper surface of the second support frame 31, and a screening chamber 34 is provided at the upper end of the vibration springs 32.

[0033] The vibrator 33 is fixedly mounted on the second support frame 31, and its output end is set on the screening chamber 34.

[0034] The screening chamber 34 is provided with a primary feed inlet 35 at the upper end, and three screening screens 36 are coaxially arranged inside the screening chamber 34. The three screening screens 36 divide the screening chamber 34 into four spaces, and each space is provided with a first discharge outlet 37 at the bottom.

[0035] In a preferred embodiment, waste plastic particles enter the screening chamber 34 through the primary feed port 35. At the same time, the vibrator 33 is activated to keep the screening chamber 34 vibrating. The waste plastic particles in the screening chamber 34 will remain in the corresponding space according to their actual size and particle size, and then enter the next stage through the corresponding first discharge port 37.

[0036] Furthermore, each of the three screening screens 36 is provided with a discharge hole, and the relative height of the three screening screens 36 is proportional to the diameter of the discharge hole.

[0037] In a preferred embodiment, the setting of the feed hole diameter allows smaller waste plastics in the screening chamber 34 to pass through the screening mesh 36 and enter different spaces, thereby achieving the purpose of screening waste plastic particles by size.

[0038] Furthermore, the lower surface of the screening mesh 36 is a planar structure, and its upper surface is a curved structure that is inclined towards the first discharge port 37 at its upper end. The inner wall of the bottom of the screening chamber 34 is also a curved structure that is inclined towards the first discharge port 37 at its upper end.

[0039] As a preferred embodiment, the upper curved surface structure allows waste plastic particles in the corresponding space to pass through the first discharge port 37 more efficiently, thereby improving the screening efficiency of the device.

[0040] Furthermore, each of the screening screens 36 is rotatably provided with a rotation anti-blocking device 38 on its lower surface. The rotation anti-blocking device 38 has an elastic column on its rotating blade, and the diameter of the elastic column is proportional to the aperture of the adjacent screening screen 36 above it.

[0041] In a preferred embodiment, during the rotation of the rotating anti-blocking device 38, the elastic column above it extends into the feed hole of the corresponding screening screen 36, thereby pushing out any waste plastic particles that may be present in the feed hole, thus effectively preventing the screening screen 36 from becoming clogged and further improving screening efficiency.

[0042] Furthermore, the four primary feed ports 35 are asymmetrically distributed vertically. The two primary feed ports 35 located in the middle are connected to two plastic density screening components 5 through a screw conveyor 4, and the other two primary feed ports 35 are connected to two waste bins 6 through a screw conveyor 4.

[0043] In a preferred embodiment, waste plastic particles with excessively large particle size may not pass through any of the screening screens 36 and will remain in the uppermost space. Waste plastic particles with excessively small particle size will pass through the three screening screens 36 and fall into the lowermost space. Therefore, the first discharge port 37 of the uppermost space and the lowermost space will be connected to the two waste bins 6 through the screw conveyor 4.

[0044] Furthermore, the plastic density screening component 5 includes:

[0045] The third support frame 51 is horizontally fixedly mounted on the first support frame 2. An air separator 52 is fixedly mounted on the top of the third support frame 51. An air chamber 55 is provided on the side of the air separator 52 near the screw conveyor 4. A secondary feed inlet 53 is opened at the upper end of the air separator 52 adjacent to the air chamber 55. A protective baffle 56 is provided on the other side of the air separator 52. A plurality of second discharge ports 54 are provided on the lower surface of the air separator 52, and the second discharge ports 54 adjacent to the air chamber 55 are located directly below the secondary feed inlet 53.

[0046] Wind turbine 57 is fixedly mounted inside the wind turbine housing 55;

[0047] In a preferred embodiment, waste plastic particles of approximately the same size fall into the air separation chamber 52 through the secondary feed port 53. At this time, the waste plastic particles undergo free fall. As they fall, the blower 57 blows air, which gives the falling waste plastic particles a horizontal acceleration, causing them to move in a parabolic motion. The higher the density of the waste plastic particles, the shorter the horizontal distance they travel. Therefore, waste plastic particles of different densities will be distributed in a certain way, allowing them to fall through the corresponding second discharge port 54 according to a certain density level, thereby achieving the purpose of density screening of waste plastic particles of the same size. The protective baffle 56 can prevent waste plastic particles with too low density from flying out of the air separation chamber 55.

[0048] Furthermore, a plastic collection pool 7 is placed below each of the second discharge ports 54;

[0049] In a preferred embodiment, the plastic collection pool 7 located below the second discharge port 54 at both ends collects waste plastic particles with excessive density and waste plastic particles with excessive density. These plastic particles cannot be accurately determined in terms of density level, so they are usually treated as waste. The other plastic collection pool 7 contains waste plastic particles with corresponding density level and uniform particle size.

[0050] In specific implementation, the following steps are included: the processed waste plastic is brought into the belt conveyor 1 and transported to the particle size screening component 3. The particle size screening component 3 will vibrate and screen the waste plastic particles entering it. Particles that are too large or too small will be transported to the corresponding waste bins 6 for centralized processing through the corresponding screw conveyors 4. Suitable plastic particles will be transported to the corresponding plastic density screening component 5 according to their particle size through the corresponding screw conveyors 4. The plastic density screening component 5 will separate plastic particles with excessive density, insufficient density, and suitable density through air separation. At the same time, it will also classify the plastic particles with suitable density according to a certain density standard.

[0051] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waste plastic recycling granule screening device, comprising a belt conveyor (1) and a first support frame (2), characterized in that, The first support frame (2) is fixedly equipped with a particle size screening component (3), and the particle size screening component (3) is located below the output end of the belt conveyor (1). The four output ports on the periphery of the particle size screening component (3) are all fixedly connected to screw conveyors (4), and the four screw conveyors (4) are respectively connected to two plastic density screening components (5) and two waste bins (6). Multiple waste collection pools (7) are provided and are evenly placed below two plastic density screening components (5).

2. The waste plastic recycling granule screening device according to claim 1, characterized in that: The particle size sieving component (3) includes: The second support frame (31) is horizontally fixedly assembled inside the first support frame (2). Multiple vibration springs (32) are provided on the upper surface of the second support frame (31), and a screening chamber (34) is provided at the upper end of the vibration springs (32). The vibrator (33) is fixedly mounted on the second support frame (31), and its output end is set on the screening chamber (34); The screening chamber (34) is provided with a primary feed inlet (35) at the upper end, and three screening screens (36) are coaxially arranged on the inner side of the screening chamber (34). The three screening screens (36) divide the screening chamber (34) into four spaces, and each space is provided with a first discharge port (37) at the bottom.

3. The waste plastic recycling granule screening device according to claim 2, characterized in that: Each of the three screens (36) is provided with a discharge hole, and the relative height of the three screens (36) is proportional to the diameter of the discharge hole.

4. The waste plastic recycling granule screening device according to claim 3, characterized in that: The lower surface of the screening mesh (36) is a planar structure, and its upper surface is a curved structure that is inclined towards the first discharge port (37) at its upper end. The inner wall of the bottom of the screening chamber (34) is also a curved structure that is inclined towards the first discharge port (37) at its upper end.

5. The waste plastic recycling granule screening device according to claim 2, characterized in that: Each of the screening screens (36) is rotatably provided with a rotation anti-blocking device (38) on its lower surface. The rotation anti-blocking device (38) has an elastic column on its rotating blade. The diameter of the elastic column is proportional to the aperture of the adjacent screening screen (36) above it.

6. The waste plastic recycling granule screening device according to claim 2, characterized in that: The four primary feed ports (35) are asymmetrically distributed vertically. The two primary feed ports (35) in the middle are connected to two plastic density screening components (5) through a screw conveyor (4), and the other two primary feed ports (35) are connected to two waste bins (6) through a screw conveyor (4).

7. The waste plastic recycling granule screening device according to claim 1, characterized in that: The plastic density screening component (5) includes: The third support frame (51) is horizontally fixedly mounted on the first support frame (2). An air separator (52) is fixedly mounted above the third support frame (51). An air chamber (55) is provided on the side of the air separator (52) near the screw conveyor (4). A secondary feed port (53) is opened at the upper end of the air separator (52) adjacent to the air chamber (55). A protective baffle (56) is provided on the other side of the air separator (52). A plurality of second discharge ports (54) are provided on the lower surface of the air separator (52), and the second discharge port (54) adjacent to the air chamber (55) is located directly below the secondary feed port (53). The wind turbine (57) is fixedly installed inside the wind turbine housing (55).

8. The waste plastic recycling granule screening device according to claim 7, characterized in that: A plastic collection pool (7) is placed below each second discharge port (54).

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