Plastic particle screening device

Abstract

The invention relates to the technical field of plastic particle recycling, in particular to a plastic particle screening device. According to the technical scheme, the screening device comprises a main screening box and a secondary screening box which are symmetrically arranged and communicated, the main screening box and the secondary screening box are each internally provided with a filter plate with the filter hole diameter decreasing progressively, an ash 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 two sides of the secondary screening box are arranged on two installation arms respectively. Through the arrangement of the dust cleaning assembly and the dust discharging device, dust accumulated and attached to the filter plate or the main screening box during operation can be raised by a cleaning screen through movement of bristles, one part of the raised dust is sucked away by a dust suction machine, and the other part of the raised dust can enter the dust discharging chamber and can be adsorbed through a dust suction rod; and when the filter plate moves during operation, the filter plate can drive the counterweight sleeve to slide down, dust adsorbed by the dust suction rod can be discharged into the gathering box to be collected, and therefore cleanliness of the screening device is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of plastic particle recycling, and in particular to a plastic particle screening device. BACKGROUND

[0002] Plastic recycling refers to the process of reprocessing and treating waste plastics so that the waste plastics can be utilized again. Plastic recycling is a systematic project, which includes collection, classification, crushing, cleaning and melting regeneration.

[0003] After the plastic recycling is crushed and cleaned, the prepared particles need to be screened so that the particles with a relatively large size can be crushed again. However, in the crushing and cleaning process, the existing crushing device is difficult to crush the particles to the same size, which will cause dead angles on the particles during cleaning, so that the particles still carry dust after drying.

[0004] When the particles still carrying dust are screened, the dust is easy to pollute the screening equipment, so that the screening equipment will accumulate dust after long-term use. Therefore, the application provides a screening device which can automatically clean and discharge dust. SUMMARY

[0005] The application aims at the problems in the background art and provides a plastic particle screening device.

[0006] The technical scheme of the application is as follows: a plastic particle screening device comprises a main screening box and a secondary screening box which are symmetrically arranged and communicated, a filter plate with a decreasing filter hole diameter is arranged in each of the main screening box and the secondary screening box, a dust discharging chamber is arranged between the main screening box and the secondary screening box, two installation arms are arranged on the two sides of the main screening box and the secondary screening box, a driving device is arranged on one installation arm, and a second arc-shaped frame is arranged on the other installation arm. The driving device comprises a reversible motor and a first arc-shaped frame, a first arc-shaped seat is slidingly arranged in the first arc-shaped frame, a fixed rod is fixedly arranged on the first arc-shaped seat, one end of the filter plate is fixedly connected with the fixed rod, and the other end of the filter plate is rotatably arranged in the main screening box and the secondary screening box through a rotating rod, a half gear is fixed to the output end of the reversible motor, and the first arc-shaped seat is provided with arc-shaped teeth which are engaged with the half gear. The filter plate is provided with a dust cleaning assembly, the dust cleaning assembly comprises an auxiliary gear which is engaged with the half gear, a toothed plate is slidingly arranged on the side of the filter plate, the auxiliary gear is fixedly provided with a driven gear which is engaged with the toothed plate, the toothed plate is fixedly provided with a cleaning rod which is located above the filter plate, and the cleaning rod is provided with bristles. The ash discharge chamber is provided with an ash discharge device, the ash discharge device comprises a plurality of ash suction rods, further comprises an ear plate fixed on both sides of the fixed rod, the ash suction rod and the ear plate are fixedly connected, a counterweight sleeve is sleeved on the ash suction rod, the other end of the ash suction rod is hinged in the collecting box, and the top of the main screening box is provided with a dust collector.

[0007] Preferably, the ash suction rod comprises a main rod, the main rod is provided with a suction hair sleeve, the suction hair sleeve is externally sleeved with a plastic sleeve, and the plastic sleeve is provided with a plurality of ash inlet openings.

[0008] Preferably, 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.

[0009] Preferably, a sliding groove is formed in the first arc-shaped frame, the first arc-shaped seat is slidingly installed in the sliding groove, the main screening box is provided with a supporting plate on the side surface, the toothed plate is slidingly installed on the supporting plate, the ash cleaning assembly further comprises a mounting box fixed on the mounting arm, the reversible motor is fixed in the mounting box, and the auxiliary gear is rotatably installed in the mounting box.

[0010] Preferably, side slots are formed in the two side surfaces of the main screening box, the cleaning rod penetrates through the side slots and is fixedly connected with the toothed plate, and the toothed plate is inclined and the inclination angle is consistent with the main screening box.

[0011] Preferably, a second arc-shaped seat is slidingly installed in the second arc-shaped frame, one end of the fixed rod is fixed on the second arc-shaped seat, and the rotating rod is fixed on the filter plate.

[0012] Preferably, one end of the main screening box is provided with a feeding hopper, one end of the secondary screening box is provided with a discharging opening, and the main screening box and the secondary screening box are both provided with a secondary material outlet.

[0013] Compared with the prior art, the ash cleaning assembly and the ash discharge device are arranged, dust accumulated and attached in the filter plate or the main screening box during operation can be cleaned and lifted by the movement of the brush, part of the lifted dust is sucked away by the dust collector, and the other part of the lifted dust can be adsorbed by the ash suction rod in the ash discharge chamber, and the dust adsorbed by the ash suction rod can be discharged into the collecting box for collection when the filter plate moves during operation, so that the cleaning of the screening device is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the present application; Figure 2 It is a structural schematic view of the filter plate of the present application; Figure 3 It is a structural schematic view of the driving device of the present application; Figure 4The structure diagram of the ash discharging device of the application is shown in the figure. Figure 5 The structure diagram of the second arc-shaped frame of the application is shown in the figure.

[0015] The figure shows the structure diagram of the ash discharging device of the application. Specific embodiments

[0016] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application.

[0017] The figure shows the structure diagram of the ash discharging device of the application. Figures 1-5 The figure shows the structure diagram of the ash discharging device of the application. The figure shows the structure diagram of the ash discharging device of the application. The figure shows the structure diagram of the ash discharging device of the application. The ash discharge chamber 3 is provided with an ash discharge device 7, which comprises a plurality of ash suction rods 71 and ear plates 72 fixed on both sides of the fixed rod 58, the ash suction rod 71 and the ear plate 72 are fixedly connected, the ash suction rod 71 is sleeved with a counterweight sleeve 74, the other end of the ash suction rod 71 is hinged in the collecting box 500, and the top of the main screening box 1 is provided with a dust suction machine 600.

[0018] The existing screening device will still carry dust when used due to the influence of the front end processing link, and dust will accumulate in the screening device after long-term use.

[0019] The present application 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 the cleanliness.

[0020] When used, the particles enter the main screening box 1 for screening, and the half gear 52 is driven to rotate by starting the forward and reverse motor 51, and when the half gear 52 rotates, it meshes with the arc-shaped teeth 55 to make the first arc-shaped seat 54 move in the first arc-shaped frame 53, thereby driving the fixed rod 58 to move in an arc shape, and because the fixed rod 58 and the filter plate 300 are fixed, the other end of the filter plate 300 is rotatably installed, so that the filter plate 300 moves in an arc shape with the rotating end as the fulcrum, and because the half gear 52 is driven by the forward and reverse motor 51 to rotate forward and reverse, the filter plate 300 can move back and forth, so that it can screen the particles on the filter plate 300; And the half gear 52 will also mesh with the auxiliary gear 63 to rotate back and forth, the auxiliary gear 63 drives the toothed plate 65 to move back and forth through the driven gear 64, and the toothed plate 65 drives the cleaning rod 61 to move back and forth on the filter plate 300, so that the bristles 62 on the cleaning rod 61 can clean the dust on the filter plate 300, so that the dust does not accumulate in the main screening box 1; And it should be noted that the first arc-shaped seat 54 and the toothed plate 65 are intermittent operations with different periods, so their operation periods are different, and when screening, the cleaning rod 61 does not move, and when cleaning, the filter plate 300 does not move.

[0021] Subsequently, the particles after being screened will fall into the secondary screening box 2 again through the dust discharging chamber 3, and the dust raised by the bristles 62 will be sucked away by the dust collector 600, and the other part of the dust will fall into the dust discharging chamber 3 and will be in contact with the dust suction rod 71 and be adsorbed by the dust suction rod 71. When the fixed rod 58 moves, the dust suction rod 71 will tilt around the end hinged in the collecting box 500, so that the counterweight sleeve 74 slides down on the dust suction rod 71 to the collecting box 500, and the dust adsorbed by the dust suction rod 71 can be pushed into the collecting box 500 during the sliding process, so that the dust in the primary screening box 1 can be discharged and accumulated.

[0022] Specifically, referring to Figure 4 , the dust suction rod 71 comprises a main rod 711, the main rod 711 is provided with an adsorption bristle sleeve 712, the adsorption bristle sleeve 712 is provided with a plastic sleeve 713, the plastic sleeve 713 is provided with a plurality of dust inlets 714, the end of the main rod 711 is fixedly installed with a stop pad 715, the stop pad 715 is located outside the collecting box 500, the stop pad 715 is provided with a gap 716, and the other end of the main rod 711 is fixedly installed with an auxiliary sleeve 73. The auxiliary sleeve 73 is fixedly connected with the ear plate 72, and the counterweight sleeve 74 is located at the auxiliary sleeve 73 when it is not moving.

[0023] In this embodiment, when the dust enters the dust discharging chamber 3, the dust will be adsorbed by the adsorption bristle sleeve 712 through the dust inlets 714, and when the fixed rod 58 moves, the counterweight sleeve 74 slides outside the plastic sleeve 713, and the plastic sleeve 713 will be deformed due to the weight of the counterweight sleeve 74, which will squeeze the adsorption bristle sleeve 712 and discharge the dust adsorbed by the adsorption bristle sleeve 712, and the plastic sleeve 713 can prevent the dust from being raised again into the dust discharging chamber 3, and finally the dust will enter the collecting box 500 through the gap 716.

[0024] In this embodiment, the dust discharging chamber 3 is communicated with the adsorption end of the dust collector 600, and a filter screen is arranged at the port, which can further ensure that the dust in the dust discharging chamber 3 is cleaned.

[0025] It should be noted that the first arc-shaped frame 53 is provided with a sliding groove 57, the sliding groove 57 comprises a side groove 56, the first arc-shaped seat 54 is slidingly installed in the sliding groove 57, the side surface of the primary screening box 1 is provided with a supporting plate, the toothed plate 65 is slidingly installed on the supporting plate, the dust cleaning assembly 6 further comprises 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.

[0026] It should be noted that the first arc-shaped seat 54 is provided with damping when moving in the sliding groove 57 to prevent it from moving by itself due to the weight.

[0027] In addition, the side slot 66 is arranged on both sides of the main screening box 1, the cleaning rod 61 is fixedly connected through the side slot 66 and the toothed plate 65, the toothed plate 65 is arranged in an inclined manner and the inclination angle is consistent with the main screening box 1, the second arc-shaped seat 9 is slidably arranged in the second arc-shaped frame 8, and one end of the fixed rod 58 is fixed to the second arc-shaped seat 9, and the rotating rod 400 is fixed to the filter plate 300.

[0028] One end of the main screening box 1 is provided with a feeding hopper 100, one end of the secondary screening box 2 is provided with a discharge port 200, and the main screening box 1 and the secondary screening box 2 are both provided with a secondary material outlet 1000.

[0029] In specific operation, the particles are input through the feeding hopper 100, firstly screened through the filter plate 300 in the main screening box 1, the qualified particles fall into the filter plate 300 in the secondary screening box 2 through the ash discharge chamber 3 for secondary screening, and the unqualified particles are discharged through the secondary material outlet 1000.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0032] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A plastics particle sizing apparatus characterized by, The utility model provides a dust removal device for double-screening box, which comprises a main screening box and a secondary screening box arranged symmetrically and communicated, a filter plate with a decreasing filter hole diameter is arranged in the main screening box and the secondary screening box respectively, a dust removal chamber is arranged between the main screening box and the secondary screening box, the two sides of the main screening box and the secondary screening box are arranged on two mounting arms respectively, a driving device is arranged on one side of the mounting arm, and a second arc-shaped frame is arranged on the other side of the mounting arm. The driving device comprises a reversible motor and a first arc-shaped frame, a first arc-shaped seat is slidably arranged in the first arc-shaped frame, a fixed rod is fixedly arranged on the first arc-shaped seat, one end of the filter plate is fixedly connected with the fixed rod, and the other end is rotatably arranged in the main screening box and the secondary screening box through a rotating rod, a half gear is fixed to the output end of the reversible motor, and the first arc-shaped seat is provided with arc-shaped teeth that are engaged with the half gear. The filter plate is provided with a dust removal assembly, the dust removal assembly comprises an auxiliary gear that is engaged with the half gear, a toothed plate that is slidably arranged on the side of the filter plate, a driven gear that is fixed to the auxiliary gear and is engaged with the toothed plate, a cleaning rod that is fixed above the filter plate, and the cleaning rod is provided with bristles. A dust removal device is arranged in the dust removal chamber, the dust removal device comprises a plurality of dust suction rods and ear plates that are fixed on both sides of the fixed rod, the dust suction rods are fixedly connected with the ear plates, a counterweight sleeve is arranged on the dust suction rods, the other end of the dust suction rods is hingedly connected in a collecting box, and the top of the main screening box is provided with a dust suction machine.

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, a plastic sleeve is arranged on the outside of the suction hair sleeve, and a plurality of ash inlets are formed in the plastic sleeve.

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

4. A plastics particle sizing apparatus according to claim 1, wherein, A sliding groove is formed in the first arc-shaped frame, the first arc-shaped seat is slidably arranged in the sliding groove, a supporting plate is arranged on the side of the main screening box, the toothed plate is slidably arranged on the supporting plate, the dust removal assembly further comprises a mounting box that is fixed on the mounting arm, the reversible motor is fixed in the mounting box, and the auxiliary gear is rotatably arranged in the mounting box.

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

6. A plastic particle sizing device according to claim 1, wherein, A second arc-shaped seat is slidably arranged in the second arc-shaped frame, one end of the fixed rod is fixed on the second arc-shaped 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 screening box is provided with a feeding hopper, one end of the secondary screening box is provided with a discharging port, and the main screening box and the secondary screening box are both provided with a secondary material outlet.

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