Plastic particle screening device and screening method thereof

Abstract

The invention belongs to the technical field of material screening, particularly relates to a plastic particle screening device and a screening method thereof, and provides the following scheme aiming at the problem that an existing screening device cannot effectively solve the problem that a filter screen in the device is blocked: the plastic particle screening device comprises a cylinder body, a top cover is fixedly connected to the upper side of the cylinder body, and a round opening is formed in the top cover; a feeding hopper is fixedly connected into the round opening, a discharging hopper is fixedly connected to the bottom of the barrel body, a fixing ring is fixedly connected to the inner wall of the barrel body, a plurality of stabilizing springs which are circumferentially distributed at equal intervals are fixedly connected to the inner wall of the fixing ring, and the ends, away from the fixing ring, of the stabilizing springs are fixedly connected with the same operation barrel. According to the plastic particle screening device and the screening method thereof disclosed by the invention, plastic particles blocked on the screening filter screen on the screening device can be effectively cleaned, so that smooth operation of the plastic particle screening process is ensured; and the use function of the device is prevented from being influenced by excessive accumulation of particles caused by blockage of the plastic particles in the device.

Description

Technical Field

[0001] The invention relates to the technical field of material screening, and in particular to a plastic particle screening device and a screening method thereof. Background Art

[0002] In the injection molding industry, screening machines can be used to screen crushed plastic products. They are usually used to recycle and reuse waste generated during the injection molding process, including unqualified products, trimmings, overflows, fragments, etc., to separate plastic particles of different sizes.

[0003] Since the crushed plastic particles usually have irregular shapes, some of the plastic particles will get stuck on the filter screen in the device during the screening process, causing the filter screen to be blocked, thereby affecting the normal use of the screening device. Summary of the invention

[0004] The invention discloses a plastic particle screening device and a screening method thereof, aiming to solve the technical problem that the existing screening device in the background technology cannot effectively solve the clogging of the filter screen in the device.

[0005] A plastic particle screening device proposed in the present invention comprises a cylinder, a top cover is fixedly connected to the upper side of the cylinder, a round opening is opened on the top cover, a feed hopper is fixedly connected in the round opening, and a discharge hopper is fixedly connected to the bottom of the cylinder, a fixing ring is fixedly connected to the inner wall of the cylinder, a plurality of circumferentially equidistantly distributed stabilizing springs are fixedly connected to the inner wall of the fixing ring, one end of the plurality of stabilizing springs away from the fixing ring is fixedly connected to the same running cylinder, and a screening filter is fixedly connected to the inner wall of the running cylinder, a blockage cleaning module is arranged in the running cylinder, the blockage cleaning module is located below the screening filter, and a shaking module is arranged in the cylinder;

[0006] The blockage cleaning module comprises a sliding rail, the outside of the sliding rail is slidably connected to a moving seat, the outside of the moving seat is fixedly connected to a U-shaped rail, the inside of the U-shaped rail is slidably connected to a movable seat, and the movable seat is provided with a plurality of circumferentially equidistantly distributed push rods;

[0007] The shaking module comprises an elliptical ring, in which a rotating seat and a contact block are slidably connected, and an end of the contact block away from the rotating seat contacts the inner wall of the elliptical ring.

[0008] By providing a cylinder, a feed hopper, a blockage cleaning module, a shaking module, a running cylinder and a screening filter, the device can effectively clean the plastic particles that are blocked on the screening filter on the screening device using the blockage cleaning module, thereby ensuring the smooth operation of the plastic particle screening process and avoiding the blockage of plastic particles in the device, causing excessive accumulation of particles and affecting the use function of the device.

[0009] In a preferred embodiment, the inner wall of the running cylinder is fixedly connected with three circumferentially equidistantly distributed connecting pieces, and the opposite sides of the three connecting pieces are fixedly connected with the same conical platform, the conical platform is located below the screening filter, and the inner wall of the running cylinder is provided with a reserved groove, the top inner wall of the reserved groove is fixedly connected with an annular plate, the outside of the annular plate is fixedly connected with a gear ring, and the bottom of the annular plate is fixedly connected to the upper side of the sliding rail; the bottom of the moving seat is fixedly connected with motor 1, the output end of motor 1 is connected with a driving gear through a coupling, the driving gear is meshed with the gear ring, a circular groove is provided on the movable seat, a hydraulic rod is fixedly connected in the circular groove, the output end of the hydraulic rod is fixedly connected with a mounting plate, and the mounting plate is provided with four circumferentially equidistantly distributed circular openings, the inner walls of the four circular openings are respectively slidably connected to the outsides of the four push rods; the outsides of the four push rods are fixedly connected with limiting rings, and the bottoms of the limiting rings are fixedly connected with unloading The force spring and the force unloading spring are both surrounded by the outside of the push rod, and the end of the force unloading spring away from the limit ring is fixedly connected to the upper side of the mounting plate, and the outside of the movable seat is movably connected with a rotating plate 1, and a notch is opened at the end of the rotating plate 1 away from the movable seat, and a thin rod is movably connected in the notch, and the outside of the thin rod is movably connected with a rotating plate 2; the rotating plate 2 is movably connected to the outside of the movable seat at one end away from the rotating plate 1, and a torsion spring is surrounded by the outside of the thin rod, one end of the torsion spring is fixedly connected to the outside of the rotating plate 1, and the other end is fixedly connected to the outside of the rotating plate 2, and the outside of the movable seat is fixedly connected to a fixed frame, the fixed frame is located above the rotating plate 2, and a winding roller is movably connected to the fixed frame, and the outside of the winding roller is fixedly connected to a steel wire rope, and the end of the steel wire rope away from the winding roller is fixedly connected to the outside of the movable seat, and the outside of the fixed frame is fixedly connected to a motor 2, and the output end of the motor 2 is connected to one side of the winding roller through a coupling.

[0010] By providing a blockage cleaning module, the blockage cleaning module utilizes sliding rails and U-shaped rails to enable the movable seat and the active seat to be moved to any position on the screening filter, so that after the screening filter is blocked by plastic particles, the device can quickly and accurately locate the blockage position, reducing the positioning and processing time, thereby shortening the downtime of the device and improving the screening efficiency of the device.

[0011] In a preferred embodiment, the inner wall of the cylinder is fixedly connected to three circumferentially equidistantly distributed connecting frames, and the opposite sides of the three connecting frames are fixedly connected to the same supporting platform, and the upper side of the supporting platform is fixedly connected to motor three, and the output end of motor three is connected to a circular shaft through a coupling, and the outside of the circular shaft is movably connected to an isolation frame, and the bottom of the isolation frame is fixedly connected to the upper side of the supporting platform, and the upper side of the circular shaft is fixedly connected to the bottom of the rotating seat, and the inner wall of the cylinder is fixedly connected to a guide ring, and the guide ring is located above the running cylinder; two symmetrical rectangular openings are provided on the side of the rotating seat away from the circular shaft, and rectangular rods are slidably connected in the rectangular openings, and the two rectangular rods are fixedly connected to the outside of the contact block on the side away from the rotating seat, and a hole groove is provided on the rotating seat. A screw rod is provided in the hole groove, and one end of the screw rod away from the rotating seat is movably connected to the outside of the contact block, and the outside of the cylinder is fixedly connected with a bracket; a limit gear is provided on the outside of the screw rod, and the limit gear is movably connected to the side opposite to the rotating seat, and a knob is provided on the outside of the screw rod, and the knob is fixedly connected to the side opposite to the limit gear, and a locking ring is provided on the outside of the limit gear, and the locking ring is slidably connected to the side opposite to the rotating seat; the outside of the locking ring is slidably connected with a guide buckle, which is fixedly connected to the side opposite to the rotating seat, and a return spring is fixedly connected to the side of the guide buckle away from the screw rod, and one end of the return spring away from the guide buckle is fixedly connected to the inner wall of the locking ring, and the inner wall of the locking ring is fixedly connected with a rack, and the rack is clamped with the limit gear.

[0012] By providing a shaking module, the shaking module uses a limit gear and a rack to enable the screw rod to adjust the overall length formed by the rotating seat and the contact block, thereby changing the impact degree of the rotating contact block on the elliptical ring, so that the device can control the shaking amplitude of the running cylinder according to plastic particles of different shapes, so as to achieve the best screening effect of the device.

[0013] A method for screening plastic particles, using the above-mentioned plastic particle screening device, comprises the following steps:

[0014] Step 1: The crushed plastic particles are transported into the cylinder through the feed hopper. The plastic particles fall onto the screening filter in the running cylinder under the guidance of the guide ring. The shaking module is used to generate continuous shaking, so that the screening filter continuously screens and filters the plastic particles during shaking. The screened particles flow to the outside of the cylinder through the discharge hopper;

[0015] Step 2: After the screening is completed, use the blockage cleaning module to deal with the plastic particles that are blocked on the screening filter. Use a push rod to insert into the filter holes on the screening filter to push out the particles that are blocked in the filter holes.

[0016] From the above, it can be seen that the plastic particle screening device provided by the present invention can effectively clean the plastic particles blocked on the screening filter on the screening device, thereby ensuring the smooth operation of the plastic particle screening process and avoiding the blockage of plastic particles in the device causing excessive accumulation of particles affecting the use function of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a plastic particle screening device proposed by the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of a plastic particle screening device proposed by the present invention;

[0019] Figure 3 A schematic diagram of the structure of a blockage cleaning module of a plastic particle screening device proposed by the present invention;

[0020] Figure 4 A schematic diagram of the structure of a moving seat and a U-shaped rail of a plastic particle screening device proposed by the present invention;

[0021] Figure 5 A is a schematic diagram of the structure of a plastic particle screening device proposed by the present invention;

[0022] Figure 6 A schematic diagram of the structure of a mounting plate of a plastic particle screening device proposed by the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of a shaking module of a plastic particle screening device proposed by the present invention;

[0024] Figure 8 This is a schematic diagram of the locking ring structure of a plastic particle screening device proposed by the present invention.

[0025] In the figure: 1, cylinder; 2, feed hopper; 3, discharge hopper; 4, bracket; 5, top cover; 6, blockage cleaning module; 601, cone table; 602, connector; 603, reserved groove; 604, annular plate; 605, gear ring; 606, sliding rail; 607, moving seat; 608, motor 1; 609, driving gear; 610, U-shaped rail; 611, movable seat; 612, rotating plate 1; 613, rotating plate 2; 614, torsion spring; 615, fixed frame; 616, winding roller; 617, wire rope; 618, motor 2; 619, hydraulic rod ;620, mounting plate;621, push rod;622, limit ring;623, unloading spring;7, shaking module;701, motor three;702, isolation frame;703, elliptical ring;704, rotating seat;705, contact block;706, hole groove;707, screw rod;708, limit gear;709, knob;710, guide buckle;711, locking ring;712, reset spring;713, rack;8, running cylinder;9, screening filter;10, fixing ring;11, stabilizing spring;12, supporting platform;13, connecting frame;14, guide ring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] A plastic particle screening device disclosed in the present invention is mainly used in scenarios where existing screening devices cannot effectively solve the problem of filter screen clogging in the device.

[0028] Reference Figure 1-7 A plastic particle screening device comprises a cylinder 1, a top cover 5 is connected to the upper side of the cylinder 1 by bolts, a round opening is opened on the top cover 5, a feed hopper 2 is connected to the round hole by bolts, and a discharge hopper 3 is connected to the bottom of the cylinder 1 by bolts, a fixing ring 10 is connected to the inner wall of the cylinder 1 by bolts, a plurality of circumferentially equidistantly distributed stabilizing springs 11 are connected to the inner wall of the fixing ring 10 by bolts, a plurality of stabilizing springs 11 are connected to the same running cylinder 8 by bolts at one end away from the fixing ring 10, and a screening filter 9 is connected to the inner wall of the running cylinder 8 by bolts, a blockage cleaning module 6 is arranged in the running cylinder 8, and the blockage cleaning module 6 is located below the screening filter 9, and a shaking module 7 is arranged in the cylinder 1;

[0029] The blockage cleaning module 6 includes a sliding rail 606, the outside of the sliding rail 606 is slidably connected to a moving seat 607, the outside of the moving seat 607 is bolted to a U-shaped rail 610, the inside of the U-shaped rail 610 is slidably connected to a movable seat 611, and the movable seat 611 is provided with a plurality of circumferentially equidistantly distributed push rods 621;

[0030] The shaking module 7 includes an elliptical ring 703 , in which a rotating seat 704 and a contact block 705 are slidably connected, and one end of the contact block 705 away from the rotating seat 704 contacts the inner wall of the elliptical ring 703 .

[0031] Specifically, the crushed plastic particles are transported into the cylinder 1 through the feed hopper 2, and the plastic particles fall onto the screening filter 9 in the running cylinder 8 under the guidance of the guide ring 14. The shaking module 7 is used to generate continuous shaking, so that the screening filter 9 continuously screens and filters the plastic particles during shaking, and the screened particles flow to the outside of the cylinder 1 through the discharge hopper 3. After the screening is completed, the blockage cleaning module 6 is used to deal with the plastic particles blocked on the screening filter 9, and the top rod 621 is inserted into the filter holes on the screening filter 9 to push out the particles blocked in the filter holes; the device can effectively clean the plastic particles blocked on the screening filter on the screening device by using the blockage cleaning module 6, thereby ensuring the smooth operation of the plastic particle screening process and avoiding the blockage of plastic particles in the device causing excessive accumulation of particles affecting the use function of the device.

[0032] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6In a preferred embodiment, the inner wall of the running cylinder 8 is connected with three circumferentially equidistantly distributed connectors 602 by bolts, and the opposite sides of the three connectors 602 are connected with the same conical platform 601 by bolts, and the conical platform 601 is located below the screening filter 9, and the inner wall of the running cylinder 8 is provided with a reserved groove 603, and the top inner wall of the reserved groove 603 is connected with an annular plate 604 by bolts, and the outer part of the annular plate 604 is connected with a gear ring 605 by bolts, and the bottom of the annular plate 604 is connected with the upper side of the sliding rail 606 by bolts; the bottom of the moving seat 607 is connected with a motor 608 by bolts The output end of the motor 608 is connected to a driving gear 609 through a coupling, and the driving gear 609 is meshed with the gear ring 605. A circular groove is provided on the movable seat 611, and a hydraulic rod 619 is connected to the circular groove through bolts. The output end of the hydraulic rod 619 is connected to a mounting plate 620 through bolts, and the mounting plate 620 is provided with four circular openings equidistantly distributed around the circumference, and the inner walls of the four circular openings are respectively slidably connected to the outside of four push rods 621; the outsides of the four push rods 621 are all connected to limit rings 622 through bolts, and the bottoms of the limit rings 622 are all connected to unloading springs 623 through bolts, and the unloading springs 623 surround On the outside of the push rod 621, the end of the unloading spring 623 away from the limiting ring 622 is connected to the upper side of the mounting plate 620 by bolts, and the outside of the movable seat 611 is rotatably connected to the rotating plate 1 612 through a bearing, and a notch is provided at the end of the rotating plate 1 612 away from the movable seat 611, and a thin rod is rotatably connected in the notch through a bearing, and the outside of the thin rod is rotatably connected to the rotating plate 2 613 through a bearing; the end of the rotating plate 2 613 away from the rotating plate 1 612 is rotatably connected to the outside of the moving seat 607 through a bearing, and a torsion spring 614 is wrapped around the outside of the thin rod, and one end of the torsion spring 614 is rotatably connected to the rotating plate 1 612 The outside of the movable seat 607 is connected by bolts, and the other end is connected to the outside of the rotating plate 613 by bolts, and the outside of the movable seat 607 is connected to the fixed frame 615 by bolts, and the fixed frame 615 is located above the rotating plate 613, and the fixed frame 615 is rotatably connected to the winding roller 616 through a bearing, and the outside of the winding roller 616 is connected to the wire rope 617 by bolts, and the end of the wire rope 617 away from the winding roller 616 is connected to the outside of the movable seat 611 by bolts, and the outside of the fixed frame 615 is connected to the motor 618 by bolts, and the output end of the motor 618 is connected to one side of the winding roller 616 through a coupling.

[0033] Specifically, after the screening filter 9 is clogged with plastic particles, the motor 1 608 is started, and the motor 1 608 drives the driving gear 609 meshing with the gear ring 605 to rotate, so that the movable seat 607 can make a circular motion on the sliding rail 606, and the motor 2 618 is started, and the motor 2 618 drives the winding roller 616 to rotate, so that the winding roller 616 reels or releases the wire rope 617, so that the rotating plate 1 612 and the rotating plate 2 613 overcome the torsion force of the torsion spring 614 and rotate downward and fold in half, thereby pulling the movable seat 611 to slide on the U-shaped rail 610, and after the movable seat 611 moves to below the blocked position on the screening filter 9, the hydraulic rod 619 is started, and the hydraulic rod 619 lifts the mounting plate 620, so that the top rod 621 on the mounting plate 620 can be inserted into the blocked filter holes on the screening filter 9 to push out the plastic particles in the filter holes.

[0034] In specific application scenarios, the blockage cleaning module 6 is mainly suitable for the blockage cleaning link in the blockage cleaning process, that is, the blockage cleaning module 6 uses the sliding rail 606 and the U-shaped rail 610 to enable the movable seat 607 and the movable seat 611 to be moved to any position on the screening filter 9, so that after the screening filter 9 is blocked by plastic particles, the device can quickly and accurately locate the blockage position, reducing the positioning and processing time, thereby shortening the downtime of the device and improving the screening efficiency of the device.

[0035] Reference Figure 7 and Figure 8In a preferred embodiment, the inner wall of the cylinder 1 is connected to three circumferentially equidistantly distributed connection frames 13 by bolts, and the opposite sides of the three connection frames 13 are connected to the same support platform 12 by bolts, and the upper side of the support platform 12 is connected to the motor 3 701 by bolts, and the output end of the motor 3 701 is connected to the round shaft through a coupling, and the outer side of the round shaft is rotatably connected to the isolation frame 702 through a bearing, and the bottom of the isolation frame 702 is connected to the upper side of the support platform 12 by bolts, and the upper side of the round shaft The bottom of the rotating seat 704 is connected by bolts, and the inner wall of the cylinder 1 is connected with a guide ring 14 by bolts, and the guide ring 14 is located above the running cylinder 8; the rotating seat 704 is provided with two symmetrical rectangular openings on the side away from the circular axis, and rectangular rods are slidably connected in the rectangular openings, and the sides of the two rectangular rods away from the rotating seat 704 are connected with the outside of the contact block 705 by bolts, and the rotating seat 704 is provided with a hole groove 706, and a screw rod 707 is arranged in the hole groove 706, and the screw rod 707 is away from the rotating seat 704. One end of the movable seat 704 is rotatably connected to the outside of the contact block 705 through a bearing, and the outside of the cylinder 1 is connected to the bracket 4 through bolts; a limit gear 708 is arranged on the outside of the screw rod 707, and the limit gear 708 is rotatably connected to the side opposite to the rotating seat 704 through a bearing, and a knob 709 is arranged on the outside of the screw rod 707, and the knob 709 is connected to the side opposite to the limit gear 708 through bolts, and a locking ring 711 is arranged on the outside of the limit gear 708, and the locking ring 711 is connected to the rotating seat The locking ring 711 is slidably connected to the side opposite to the rotating seat 704; the outer sliding connection of the locking ring 711 is provided with a guide buckle 710, the guide buckle 710 is connected to the side opposite to the rotating seat 704 by bolts, and the side of the guide buckle 710 away from the screw rod 707 is connected to a return spring 712 by bolts, the end of the return spring 712 away from the guide buckle 710 is connected to the inner wall of the locking ring 711 by bolts, the inner wall of the locking ring 711 is connected to a rack 713 by bolts, and the rack 713 is clamped with the limit gear 708.

[0036] Specifically, before screening, the locking ring 711 is pushed against the elastic force of the return spring 712, so that the locking ring 711 slides on the guide buckle 710, so that the rack 713 releases the lock on the limit gear 708, and the knob 709 is turned to make the knob 709 drive the screw rod 707 to rotate out of the rotating seat 704, so that the screw rod 707 pushes the contact block 705 out of the rotating seat 704, thereby increasing the overall length of the rotating seat 704 and the contact block 705, and loosening the locking ring 711. 1. The locking ring 711 is reset, so that the rack 713 locks the limit gear 708, and the screw rod 707 stops rotating. The motor 3 701 is started, and the motor 3 701 drives the force arm formed by the rotating seat 704 and the contact block 705 to rotate, so that the contact block 705 continuously collides with the inner wall of the short radius of the elliptical ring 703 in the elliptical ring 703, so that the elliptical ring 703 transmits the shaking to the running cylinder 8, so that the screening filter 9 on the running cylinder 8 continuously screens the plastic particles.

[0037] In specific application scenarios, the shaking module 7 is mainly suitable for the shaking link in the shaking process, that is, the shaking module 7 uses the limiting gear 708 and the rack 713 to enable the screw rod 707 to complete the adjustment of the overall length formed by the rotating seat 704 and the contact block 705, thereby changing the impact degree of the rotating contact block 705 on the elliptical ring 703, so that the device can control the shaking amplitude of the running cylinder 8 according to plastic particles of different shapes, so as to optimize the screening effect of the device.

[0038] A method for screening plastic particles, using the above-mentioned plastic particle screening device, comprises the following steps:

[0039] Step 1: The crushed plastic particles are transported into the cylinder 1 through the feed hopper 2. The plastic particles fall onto the screening filter 9 in the running cylinder 8 under the guidance of the guide ring 14. The shaking module 7 is used to generate continuous shaking, so that the screening filter 9 continuously screens and filters the plastic particles during shaking. The screened particles flow to the outside of the cylinder 1 through the discharge hopper 3 (the crushed plastic particles are transported into the cylinder 1 through the feed hopper 2. The plastic particles fall onto the screening filter 9 in the running cylinder 8 under the guidance of the guide ring 14. Before screening, the locking ring 711 is pushed to overcome the elastic force of the reset spring 712, so that the locking ring 711 slides on the guide buckle 710, so that the rack 713 releases the lock on the limit gear 708, and rotates The knob 709 is turned to drive the screw rod 707 to rotate out of the rotating seat 704, so that the screw rod 707 pushes the contact block 705 out of the rotating seat 704, thereby increasing the overall length of the rotating seat 704 and the contact block 705, and loosening the locking ring 711. The locking ring 711 is reset, so that the rack 713 locks the limit gear 708, and the screw rod 707 no longer rotates, and the motor 3 701 is started. The motor 3 701 drives the force arm formed by the rotating seat 704 and the contact block 705 to rotate, so that the contact block 705 continuously collides with the inner wall of the short radius of the elliptical ring 703 in the elliptical ring 703, so that the elliptical ring 703 transmits the shaking to the running cylinder 8, so that the screening filter 9 on the running cylinder 8 continuously screens the plastic particles);

[0040] Step 2: After the screening is completed, the blockage cleaning module 6 is used to process the plastic particles blocked on the screening filter 9, and the push rod 621 is inserted into the filter holes on the screening filter 9 to push out the particles blocked in the filter holes (after the screening filter 9 is blocked by plastic particles, the motor 1 608 is started, and the motor 1 608 drives the driving gear 609 meshing with the gear ring 605 to rotate, so that the moving seat 607 can make a circular motion on the sliding rail 606, and the motor 2 618 is started, and the motor 2 618 drives the winding roller 616 to rotate, Thereby, the winding roller 616 reels or releases the wire rope 617, and the rotating plate 1 612 and the rotating plate 2 613 overcome the torque of the torsion spring 614 and rotate downward and fold in half, thereby pulling the movable seat 611 to slide on the U-shaped rail 610. After the movable seat 611 moves to below the blocked position on the screening filter 9, the hydraulic rod 619 is started, and the hydraulic rod 619 lifts the mounting plate 620, so that the top rod 621 on the mounting plate 620 can be inserted into the blocked filter holes on the screening filter 9 to push out the plastic particles in the filter holes).

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic particle screening device, comprising a cylinder (1), characterized in that: The upper side of the cylinder (1) is fixedly connected to a top cover (5), a circular opening is formed on the top cover (5), a feed hopper (2) is fixedly connected inside the circular opening, and a discharge hopper (3) is fixedly connected to the bottom of the cylinder (1), a fixing ring (10) is fixedly connected to the inner wall of the cylinder (1), a plurality of circumferentially equidistantly distributed stabilizing springs (11) are fixedly connected to the inner wall of the fixing ring (10), the ends of the plurality of stabilizing springs (11) away from the fixing ring (10) are fixedly connected to the same running cylinder (8), and a screening filter (9) is fixedly connected to the inner wall of the running cylinder (8), a blockage cleaning module (6) is arranged inside the running cylinder (8), and the blockage cleaning module (6) is located below the screening filter (9), and a shaking module (7) is arranged inside the cylinder (1); The blockage cleaning module (6) comprises a sliding rail (606), the outside of the sliding rail (606) is slidably connected to a movable seat (607), the outside of the movable seat (607) is fixedly connected to a U-shaped rail (610), the inside of the U-shaped rail (610) is slidably connected to a movable seat (611), and the movable seat (611) is provided with a plurality of circumferentially equidistantly distributed push rods (621); The shaking module (7) comprises an elliptical ring (703), a rotating seat (704) and a contact block (705) are slidably connected inside the elliptical ring (703), and one end of the contact block (705) away from the rotating seat (704) contacts the inner wall of the elliptical ring (703).

2. A plastic particle screening device according to claim 1, characterized in that: The inner wall of the running cylinder (8) is fixedly connected with three circumferentially equidistantly distributed connecting pieces (602); the opposite sides of the three connecting pieces (602) are fixedly connected with a same conical platform (601); the conical platform (601) is located below the screening filter (9); and a reserved groove (603) is provided on the inner wall of the running cylinder (8); an annular plate (604) is fixedly connected to the inner wall at the top of the reserved groove (603); a gear ring (605) is fixedly connected to the outside of the annular plate (604); and the bottom of the annular plate (604) is fixedly connected to the upper side of the sliding rail (606).

3. A plastic particle screening device according to claim 2, characterized in that: The bottom of the movable seat (607) is fixedly connected to a motor 1 (608), the output end of the motor 1 (608) is connected to a driving gear (609) via a coupling, the driving gear (609) is meshed with the gear ring (605), a circular groove is provided on the movable seat (611), a hydraulic rod (619) is fixedly connected in the circular groove, the output end of the hydraulic rod (619) is fixedly connected to a mounting plate (620), and the mounting plate (620) is provided with four circular openings equidistantly distributed around the circumference, and the inner walls of the four circular openings are respectively slidably connected to the outside of four push rods (621).

4. A plastic particle screening device according to claim 3, characterized in that: The outsides of the four push rods (621) are all fixedly connected to a limiting ring (622), and the bottoms of the limiting rings (622) are all fixedly connected to a unloading spring (623), which surrounds the outside of the push rods (621), and one end of the unloading spring (623) away from the limiting ring (622) is fixedly connected to the upper side of the mounting plate (620), and the outside of the movable seat (611) is movably connected to a rotating plate 1 (612), and a notch is provided at one end of the rotating plate 1 (612) away from the movable seat (611), and a thin rod is movably connected in the notch, and the outside of the thin rod is movably connected to a rotating plate 2 (613).

5. A plastic particle screening device according to claim 4, characterized in that: The end of the rotating plate 2 (613) away from the rotating plate 1 (612) is movably connected to the outside of the movable seat (607), and a torsion spring (614) is wrapped around the outside of the thin rod. One end of the torsion spring (614) is fixedly connected to the outside of the rotating plate 1 (612), and the other end is fixedly connected to the outside of the rotating plate 2 (613). The outside of the movable seat (607) is fixedly connected to a fixed frame (615), and the fixed frame (615) is located above the rotating plate 2 (613). A winding roller (616) is movably connected to the fixed frame (615), and the outside of the winding roller (616) is fixedly connected to a steel wire rope (617). The end of the steel wire rope (617) away from the winding roller (616) is fixedly connected to the outside of the movable seat (611). The outside of the fixed frame (615) is fixedly connected to a motor 2 (618), and the output end of the motor 2 (618) is connected to one side of the winding roller (616) through a coupling.

6. A plastic particle screening device according to claim 5, characterized in that: The inner wall of the cylinder (1) is fixedly connected to three circumferentially equidistantly distributed connection frames (13); one side of the three connection frames (13) opposite to each other is fixedly connected to the same support platform (12); the upper side of the support platform (12) is fixedly connected to a third motor (701); the output end of the third motor (701) is connected to a circular shaft via a coupling; the outer side of the circular shaft is movably connected to an isolation frame (702); the bottom of the isolation frame (702) is fixedly connected to the upper side of the support platform (12); and the upper side of the circular shaft is fixedly connected to the bottom of the rotating seat (704); the inner wall of the cylinder (1) is fixedly connected to a guide ring (14); and the guide ring (14) is located above the running cylinder (8).

7. A plastic particle screening device according to claim 6, characterized in that: The rotating seat (704) is provided with two symmetrical rectangular openings on a side away from the circular axis, and rectangular rods are slidably connected in the rectangular openings. The two rectangular rods are fixedly connected to the outside of the contact block (705) on the side away from the rotating seat (704). The rotating seat (704) is provided with a hole groove (706), and a screw rod (707) is arranged in the hole groove (706). One end of the screw rod (707) away from the rotating seat (704) is movably connected to the outside of the contact block (705), and the outside of the cylinder (1) is fixedly connected to a bracket (4).

8. A plastic particle screening device according to claim 7, characterized in that: A limit gear (708) is arranged outside the screw rod (707), and the limit gear (708) is movably connected to the side opposite to the rotating seat (704). A knob (709) is arranged outside the screw rod (707), and the knob (709) is fixedly connected to the side opposite to the limit gear (708). A locking ring (711) is arranged outside the limit gear (708), and the locking ring (711) is slidably connected to the side opposite to the rotating seat (704).

9. A plastic particle screening device according to claim 8, characterized in that: The locking ring (711) is slidably connected to a guide buckle (710) on the outside, the guide buckle (710) is fixedly connected to a side opposite to the rotating seat (704), and a return spring (712) is fixedly connected to a side of the guide buckle (710) away from the screw rod (707), and one end of the return spring (712) away from the guide buckle (710) is fixedly connected to the inner wall of the locking ring (711), and a rack (713) is fixedly connected to the inner wall of the locking ring (711), and the rack (713) is engaged with the limit gear (708).

10. A method for screening plastic particles, using a plastic particle screening device as claimed in claim 9, characterized in that: The steps include: Step 1: The crushed plastic particles are transported into the cylinder (1) through the feed hopper (2); the plastic particles fall onto the screening filter (9) in the running cylinder (8) under the guidance of the guide ring (14); a shaking module (7) is used to generate continuous shaking, so that the screening filter (9) continuously screens and filters the plastic particles during the shaking; the screened particles flow to the outside of the cylinder (1) through the discharge hopper (3); Step 2: After the screening is completed, the blockage cleaning module (6) is used to process the plastic particles that are blocked on the screening filter (9), and the push rod (621) is inserted into the filter holes on the screening filter (9) to push out the particles that are blocked in the filter holes.

Images