A plastic particle screening device

Abstract

The present application relates to the technical fields of plastic particle recycling, in particular to a plastic particle screening device. The technical scheme comprises: symmetrically arranged and connected main screening box and secondary screening box, the main screening box and the secondary screening box are respectively provided with filter plates with decreasing filter hole diameters, a dust discharging chamber is installed between the main screening box and the secondary screening box, and the two sides of the main screening box and the secondary screening box are respectively arranged on two mounting arms. The dust accumulated and adhered to the filter plates or the main screening box during operation is lifted by the movement of the brush hairs, part of the lifted dust is absorbed by the dust collector, and the other part enters the dust discharging chamber and is adsorbed by the dust suction rod. When the filter plate moves during operation, the counterweight sleeve is driven to slide downward, the dust adsorbed by the dust suction rod is discharged into the collecting box for collection, thereby ensuring the cleanliness of the screening device.

Description

Technical Field

[0001] This invention relates to the field of plastic pellet recycling technology, and more particularly to a plastic pellet screening device. Background Technology

[0002] Plastic recycling refers to the process of reprocessing waste plastics so that they can be reused. It is a systematic project that includes collection, sorting, crushing, washing, and melting for recycling.

[0003] After plastic recycling involves crushing and washing, the granules need to be screened to further crush any remaining larger particles. However, existing crushing and washing equipment struggles to produce uniformly sized particles, leading to blind spots during washing and resulting in dust-laden particles even after drying.

[0004] When screening particles that still carry dust, it is easy for dust to contaminate the screening equipment, causing dust to accumulate after prolonged use. Therefore, we propose a screening device that can automatically clean and discharge dust. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a plastic particle screening device.

[0006] The technical solution of the present invention: a plastic particle screening device, comprising a main screening box and a secondary screening box symmetrically arranged and connected, wherein the main screening box and the secondary screening box are respectively provided with filter plates with decreasing filter hole diameters, and an ash discharge chamber is installed between the main screening box and the secondary screening box. The two sides of the main screening box and the secondary screening box are respectively provided on two mounting arms, a driving device is installed on one mounting arm, and a second arc-shaped frame is installed on the other mounting arm.

[0007] The drive device includes a forward and reverse motor and a first arc frame. A first arc seat is slidably installed inside the first arc frame. A fixed rod is fixedly installed on the first arc seat. One end of the filter plate is fixedly connected to the fixed rod, and the other end is rotatably installed in the main screening box and the secondary screening box through a rotating rod. A half gear is fixed at the output end of the forward and reverse motor. The first arc seat is provided with arc-shaped teeth that mesh with the half gear.

[0008] The filter plate is equipped with a dust removal assembly, which includes an auxiliary gear that meshes with the half gear, and a toothed plate that is slidably mounted on the side of the filter plate. The auxiliary gear is fixed with a driven gear that meshes with the toothed plate. The toothed plate is fixed with a cleaning rod located above the filter plate. The cleaning rod is equipped with bristles.

[0009] The ash discharge chamber is equipped with an ash discharge device, which includes several ash suction rods and ear plates fixed on both sides of the fixed rods. The ash suction rods and ear plates are fixedly connected. A counterweight sleeve is fitted on the ash suction rod. The other end of the ash suction rod is hinged in the collection box. A dust collector is installed on the top of the main screening box.

[0010] Preferably, the dust-absorbing rod includes a main rod, the main rod is provided with an adsorption sleeve, the adsorption sleeve is covered with a plastic sleeve, and the plastic sleeve has several dust inlets.

[0011] Preferably, a retaining pad is fixedly installed at the end of the main rod. The retaining pad is located outside the assembly box and has a notch. An auxiliary sleeve is fixed at the other end of the main rod. The auxiliary sleeve is fixedly connected to the ear plate. The counterweight sleeve is located at the auxiliary sleeve when it is not moved.

[0012] Preferably, a chute is provided in the first arc-shaped frame, the chute includes a side chute, the first arc-shaped seat is slidably installed in the chute, a support plate is installed on the side of the main screening box, the toothed plate is slidably installed on the support plate, the dust removal assembly also includes a mounting box fixed on the mounting arm, a forward and reverse motor is fixed in the mounting box, and an auxiliary gear is rotatably installed in the mounting box.

[0013] Preferably, side slots are provided on both sides of the main screening box, and the cleaning rod passes through the side slots and is fixedly connected to the toothed plate. The toothed plate is inclined and the inclination angle is the same as that of the main screening box.

[0014] Preferably, a second arc-shaped seat is slidably installed inside the second arc-shaped frame, one end of the fixing rod is fixed on the second arc-shaped seat, and the rotating rod is fixed on the filter plate.

[0015] Preferably, one end of the main screening box is provided with a conveying hopper, and one end of the secondary screening box is provided with a discharge port. Both the main screening box and the secondary screening box are provided with secondary material outlets.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting up a dust removal component and a dust discharge device, the dust accumulated and attached to the filter plate or main screening box during operation will be lifted up by the movement of the brush bristles. Part of the lifted dust is absorbed by the vacuum cleaner, and the other part will enter the dust discharge chamber and be attracted by the dust suction rod. As the filter plate moves during operation, it will drive the counterweight sleeve to slide down, which can discharge the dust attracted by the dust suction rod into the collection box for collection, thereby ensuring the cleanliness of the screening device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the filter plate of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the driving device of the present invention;

[0020] Figure 4 This is a schematic diagram of the ash removal device of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the second arc-shaped frame of the present invention.

[0022] Reference numerals: 1. Main screening box; 2. Secondary screening box; 3. Ash discharge chamber; 4. Mounting arm; 5. Drive unit; 6. Ash cleaning assembly; 7. Ash discharge device; 8. Second arc-shaped frame; 9. Second arc-shaped seat; 51. Forward and reverse motor; 52. Half gear; 53. First arc-shaped frame; 54. First arc-shaped seat; 55. Arc-shaped teeth; 56. Side groove; 57. Slide groove; 58. Fixed rod; 61. Cleaning rod; 62. Brush bristles; 63. Auxiliary gear; 6 4. Driven gear; 65. Tooth plate; 66. Side groove; 71. Dust suction rod; 72. Ear plate; 73. Auxiliary sleeve; 74. Counterweight sleeve; 711. Main rod; 712. Adsorption hair sleeve; 713. Plastic sleeve; 714. Dust inlet; 715. Baffle pad; 716. Notch; 100. Feed hopper; 200. Discharge port; 300. Filter plate; 400. Rotating rod; 500. Collection box; 600. Vacuum cleaner; 1000. Secondary material outlet. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] See attached document Figure 1-5 A plastic granule screening device includes a main screening box 1 and a secondary screening box 2 that are symmetrically arranged and connected. The main screening box 1 and the secondary screening box 2 are respectively provided with filter plates 300 with decreasing filter hole diameters. A dust discharge chamber 3 is installed between the main screening box 1 and the secondary screening box 2. The two sides of the main screening box 1 and the secondary screening box 2 are respectively provided on two mounting arms 4. A driving device 5 is installed on one mounting arm 4, and a second arc frame 8 is installed on the other mounting arm 4.

[0025] The drive device 5 includes a forward and reverse motor 51 and a first arc frame 53. A first arc seat 54 is slidably installed inside the first arc frame 53. A fixing rod 58 is fixedly installed on the first arc seat 54. One end of the filter plate 300 is fixedly connected to the fixing rod 58, and the other end is rotatably installed in the main screening box 1 and the secondary screening box 2 through the rotating rod 400. A half gear 52 is fixed at the output end of the forward and reverse motor 51. The first arc seat 54 is provided with arc-shaped teeth 55 that mesh with the half gear 52.

[0026] The filter plate 300 is equipped with a dust removal assembly 6, which includes an auxiliary gear 63 that meshes with the half gear 52, and a toothed plate 65 that is slidably mounted on the side of the filter plate 300. The auxiliary gear 63 is fixed with a driven gear 64 that meshes with the toothed plate 65. The toothed plate 65 is fixed with a cleaning rod 61 located above the filter plate 300. The cleaning rod 61 is provided with bristles 62.

[0027] The ash discharge chamber 3 is equipped with an ash discharge device 7, which includes several ash suction rods 71 ​​and ear plates 72 fixed on both sides of the fixed rod 58. The ash suction rods 71 ​​and ear plates 72 are fixedly connected. A counterweight sleeve 74 is fitted on the ash suction rods 71. The other end of the ash suction rods 71 ​​is hinged in the collection box 500. A dust collector 600 is installed on the top of the main screening box 1.

[0028] When existing screening devices are in use, the particles still carry dust due to the influence of the front-end processing. After the screening device has been used for a long time, dust will accumulate inside it.

[0029] This invention can clean the main screening box 1 while screening through the filter plate 300, so that the dust in the main screening box 1 is discharged, thereby ensuring cleanliness.

[0030] In use, the particles enter the main screening box 1 for screening. By starting the forward and reverse motor 51, the half gear 52 will be driven to rotate. When the half gear 52 rotates, it will mesh with the arc-shaped teeth 55, causing the first arc-shaped seat 54 to move within the first arc-shaped frame 53, thereby driving the fixed rod 58 to move in an arc shape. Since the fixed rod 58 is fixed to the filter plate 300, and the other end of the filter plate 300 is rotatably installed, the filter plate 300 will move in an arc shape with the rotating end as the fulcrum. Since the forward and reverse motor 51 drives the half gear 52 to rotate in both directions, the filter plate 300 can move back and forth, so that the particles on the filter plate 300 can be screened.

[0031] Meanwhile, the half gear 52 will also mesh with the auxiliary gear 63 to rotate back and forth. The auxiliary gear 63 will cause the toothed plate 65 to move back and forth through the driven gear 64. The toothed plate 65 will drive the cleaning rod 61 to move back and forth on the filter plate 300. This allows the bristles 62 on the cleaning rod 61 to clean the dust on the filter plate 300, so that the dust does not accumulate in the main screening box 1.

[0032] It should also be noted that the first arc-shaped seat 54 and the toothed plate 65 are intermittent operations with different cycles, so their operation cycles are different. During screening, the cleaning rod 61 will not move, and during cleaning, the filter plate 300 will not move.

[0033] Subsequently, the sieved particles fall down and enter the secondary screening box 2 through the dust discharge chamber 3 for further screening. Some of the dust stirred up by the brush bristles 62 is sucked away by the vacuum cleaner 600, while the other part falls into the dust discharge chamber 3. This part of the dust comes into contact with the suction rod 71 and is attracted by it. As the fixed rod 58 moves, the suction rod 71 tilts around the end hinged in the collection box 500, causing the counterweight sleeve 74 to slide down the suction rod 71 towards the collection box 500. During the descent, the dust attracted by the suction rod 71 is pushed into the collection box 500 for collection, thus discharging the dust from the main screening box 1 and preventing accumulation.

[0034] For details, please refer to Figure 4 The dust suction rod 71 includes a main rod 711, the main rod 711 is provided with a dust suction sleeve 712, the dust suction sleeve 712 is covered with a plastic sleeve 713, the plastic sleeve 713 has several dust inlets 714, a baffle 715 is fixedly installed at the end of the main rod 711, the baffle 715 is located outside the collection box 500, the baffle 715 has a notch 716, the other end of the main rod 711 is fixedly provided with an auxiliary sleeve 73, the auxiliary sleeve 73 is fixedly connected to the ear plate 72, and the counterweight sleeve 74 is located at the auxiliary sleeve 73 when not moved.

[0035] In this embodiment, when dust enters the dust discharge chamber 3, the dust is absorbed by the adsorption sleeve 712 through the dust inlet 714. When the fixed rod 58 moves, the counterweight sleeve 74 slides outside the plastic sleeve 713. Because the counterweight sleeve 74 is heavy, it will compress the plastic sleeve 713 and deform it. This will simultaneously compress the adsorption sleeve 712 and discharge the dust it has adsorbed. The plastic sleeve 713 can prevent the dust from being stirred up again into the dust discharge chamber 3. Finally, the dust will enter the collection box 500 through the notch 716.

[0036] Furthermore, in this embodiment, the dust discharge chamber 3 is connected to the suction end of the vacuum cleaner 600, and a filter screen is provided at the port, which can further ensure that the dust in the dust discharge chamber 3 is cleaned.

[0037] It should be noted that a sliding groove 57 is provided in the first arc frame 53, the sliding groove 57 includes a side groove 56, the first arc seat 54 is slidably installed in the sliding groove 57, a support plate is installed on the side of the main screening box 1, the toothed plate 65 is slidably installed on the support plate, the dust removal assembly 6 also includes a mounting box fixed on the mounting arm 4, the forward and reverse motor 51 is fixed in the mounting box, and the auxiliary gear 63 is rotatably installed in the mounting box.

[0038] It should also be noted that the first arc-shaped seat 54 is equipped with damping when it moves within the slide groove 57 to prevent it from moving on its own due to its weight.

[0039] In addition, side slots 66 are provided on both sides of the main screening box 1. The cleaning rod 61 passes through the side slots 66 and is fixedly connected to the toothed plate 65. The toothed plate 65 is inclined and the inclination angle is the same as that of the main screening box 1. The second arc-shaped seat 9 is slidably installed in the second arc-shaped frame 8. One end of the fixing rod 58 is fixed on the second arc-shaped seat 9. The rotating rod 400 is fixed on the filter plate 300.

[0040] One end of the main screening box 1 is provided with a conveying hopper 100, and one end of the secondary screening box 2 is provided with a discharge port 200. Both the main screening box 1 and the secondary screening box 2 are provided with a secondary material outlet 1000.

[0041] In actual operation, particles are fed into the hopper 100 and first screened by the filter plate 300 in the main screening box 1. Particles that pass the screening fall into the filter plate 300 in the secondary screening box 2 through the ash discharge chamber 3 for further screening, while those that fail the screening pass through the secondary material outlet 1000.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plastics particle sizing apparatus characterized by, The utility model provides a dust removal device for double -sieve box, including main sieve box and secondary sieve box, main sieve box and secondary sieve box are symmetrically arranged and intercommunicate, and the filter plate with the filter hole diameter of decreasing gradually is equipped in main sieve box and secondary sieve box respectively, and the ash removal chamber is installed between main sieve box and secondary sieve box, and the two sides of main sieve box and secondary sieve box are arranged on two mounting arms respectively, and the driving device is installed on the mounting arm of one side, and the second arc frame is installed on the mounting arm of the other side, the second arc seat is slidably installed in the second arc frame, and one end of the fixed rod is fixed on the second arc seat for supporting the other end of the fixed rod. The driving device comprises a reversible motor and a first arc frame, the first arc frame slidably has a first arc seat, the first arc seat is fixedly provided with a fixed rod, one end of the filter plate is fixedly connected with the fixed rod, the other end is rotatably provided with a rotating rod in the main sieve box and the secondary sieve box, the output end of the reversible motor is fixedly provided with a half gear, and the first arc seat is provided with arc-shaped teeth that are engaged with the half gear. The filter plate is provided with an ash removal assembly, the ash removal assembly comprises an auxiliary gear engaged with the half gear, a toothed plate slidably mounted on the side of the filter plate, a driven gear fixedly connected with the toothed plate, a cleaning rod fixedly provided above the filter plate, and bristles provided on the cleaning rod. The ash removal chamber is provided with an ash removal device, the ash removal device comprises a plurality of dust suction rods, and ear plates fixedly provided on both sides of the fixed rod, the dust suction rods are fixedly connected with the ear plates, a counterweight sleeve is sleeved on the dust suction rods, the counterweight sleeve is used for sliding and pushing the adsorbed dust into a collecting box when the dust suction rods are inclined, the other end of the dust suction rods is hingedly connected in the collecting box, and the top of the main sieve box is provided with a dust collector.

2. A plastics particle sizing apparatus according to claim 1, wherein, The dust suction rod comprises a main rod, the main rod is provided with a suction hair sleeve, the suction hair sleeve is sleeved with a plastic sleeve, and the plastic sleeve is provided with a plurality of ash inlets.

3. A plastics particle sizing apparatus according to claim 2, wherein, The end of the main rod is fixedly provided with a stop pad, the stop pad is located outside the collecting box, the stop pad is provided with a notch, the other end of the main rod is fixedly provided with an auxiliary sleeve, the auxiliary sleeve is fixedly connected with the ear plate, and the counterweight sleeve is located at the auxiliary sleeve when not moving.

4. A plastics particle sizing apparatus according to claim 1, wherein, A sliding groove is formed in the first arc frame, the first arc seat is slidably installed in the sliding groove, a support plate is installed on the side of the main sieve box, the toothed plate is slidably installed on the support plate, the ash removal assembly further comprises a mounting box fixedly installed on the mounting arm, the reversible motor is fixedly installed in the mounting box, and the auxiliary gear is rotatably installed in the mounting box.

5. A plastics particle sizing apparatus according to claim 4, wherein, Side slots are formed in both sides of the main sieve box, the cleaning rod penetrates the side slots and is fixedly connected with the toothed plate, the toothed plate is obliquely arranged and has the same inclination angle as the main sieve box.

6. A plastic particle sizing device according to claim 1, wherein, The second arc seat is slidably installed in the second arc frame, one end of the fixed rod is fixed on the second arc seat, and the rotating rod is fixed on the filter plate.

7. A plastic particle sizing device according to claim 1, wherein, One end of the main sieve box is provided with a feeding hopper, one end of the secondary sieve box is provided with a discharge port, and the main sieve box and the secondary sieve box are both provided with a secondary material outlet.

Images