Filtering and grinding apparatus and method for recycling plastics

Abstract

The application discloses a filtering and grinding device and method for recycling plastic, and relates to the technical field of recycling plastic grinding processing. The application comprises a grinding roller, an arc-shaped sieve plate is fixed through the upper part of the periphery of the grinding roller, an arc-shaped grinding plate is fixed through the lower part of the periphery of the grinding roller, support rings are fixed at both ends of the grinding roller, movable grooves are formed in the periphery of the support rings, support seats are arranged, connecting plates are fixed at the edges of the top of the two support seats, the connecting plates are close to each other, a material receiving frame is arranged in a penetrating manner from top to bottom, connecting strips are fixed at both ends of the material receiving frame, a grinding assembly is arranged, a rotating motor one is fixed at one end of the grinding roller, a turning assembly is arranged, a rotating motor two is fixed at one end of the grinding roller, and a servo motor is arranged, wherein the output end of the servo motor is fixed with a turning shaft which is fixed through one end of the grinding roller. In the recycling plastic grinding process, the grinding to the appropriate particle size does not need multi-stage grinding and screening, and the overall grinding efficiency is higher.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of recycling plastic grinding processing, in particular to a filtering and grinding device and method for recycling plastic. BACKGROUND

[0002] Plastic waste has a serious impact on the environment, health and economy, such as microplastic pollution of the ocean, entry into the food chain, etc. Recycling plastic can reduce the accumulation of plastic waste and pollution of the environment, reduce damage to the ecosystem, plastic is made of fossil fuels such as petroleum, recycling plastic can save resources, reduce the demand for new plastic production, reduce energy consumption and greenhouse gas emissions, promote the development of circular economy, plastic recycling industry can create employment opportunities and promote economic development. The recycled plastic can be used as raw material to produce new plastic products, reducing production costs;

[0003] Common recycled plastics, such as "PET (polyethylene terephthalate), HDPE (high-density polyethylene), PP (polypropylene)", etc. These materials need to be ground into small particles for recycling when recycling;

[0004] Plastic grinding refers to the process of processing plastic materials into the desired particle size or particle state through mechanical or chemical methods, among which mechanical grinding is the most common method of plastic grinding, including the use of various grinding equipment such as grinders, crushers, hammer mills, etc. These devices break plastic materials into smaller particles through rotation or vibration;

[0005] At the same time, through the retrieval of existing public documents, the patent document with the announcement number CN118181587B discloses a multi-stage grinding device for plastic raw material processing and its use method, which is applied in the field of grinding devices. By setting the driving assembly, the screening assembly can be driven to reciprocate, and the plastic raw material can be screened into large and small sizes. At the same time, the driving assembly can also drive the grinding assembly to work to grind the screened large and small plastic raw materials, thereby forming multi-stage grinding, which can reduce the storage time of the device for plastic raw materials and avoid the over-grinding of smaller plastic raw materials blocked by larger plastic raw materials for a long time. At the same time, the device can also adjust the distance between the three grinding discs and the three grinding seats through the driving assembly, so that the device can meet the multi-stage grinding work of plastic particles of different sizes. Moreover, the device realizes screening, multi-stage grinding and distance adjustment through a single driving device, and the overall manufacturing cost is low. However, it still has the following disadvantages in actual use:

[0006] In the whole plastic grinding process, the above patent only needs to adopt multi-stage grinding screening, needs to be ground separately in multiple steps, fully grinds the plastic, needs to be screened after the plastic is ground, and is ground and screened step by step through different structures, and after grinding, the unqualified plastic remaining after screening needs to be recycled to the grinding structure. In the operation, the same batch of recycled plastic needs to be ground in multiple steps to achieve the final particle size. The grinding process is long, which leads to a long grinding time and affects the plastic grinding efficiency. SUMMARY

[0007] The purpose of the present application is to provide a filtering and grinding device and method for recycling plastic, which solves the problem of long process required for overall grinding by setting a grinding roller, a supporting seat, a material receiving frame, a grinding assembly, a turning assembly, a material conveying cylinder and a servo motor.

[0008] To solve the above technical problems, the present application is realized by the following technical scheme:

[0009] The application discloses a filtering and grinding device for recycling plastic production, which comprises a grinding roller, an arc-shaped sieve plate fixed through the upper part of the circumferential side of the grinding roller, an arc-shaped grinding plate fixed through the lower part of the circumferential side of the grinding roller, support rings fixed at both ends of the grinding roller, movable grooves formed in the circumferential side of the support rings, support seats, connecting plates fixed at the edges of the top of the two support seats and close to each other, a receiving frame, the receiving frame being vertically arranged and both ends of the receiving frame being fixedly connected with connecting strips, a grinding assembly, a rotating motor one fixed at one end of the grinding roller, a rotating shaft one fixed at the output end of the rotating motor one, arc-shaped grinding rollers for recycling plastic arranged in an annular array and movably connected at the edges between the two rotating discs, the edges of the grinding rollers extending out of the circumferential side of the rotating disc, and the lowermost grinding roller being in contact with the inner arc surface of the arc-shaped grinding plate in the grinding roller in rotation, a turning assembly, a rotating motor two fixed at one end of the grinding roller and arranged above the rotating motor one, a rotating shaft two and turning plates, the turning plates being fixed in an annular array on the circumferential side of the rotating shaft two, and the uppermost turning plate being in contact with the inner side of the upper part of the arc-shaped sieve plate, the grinding assembly being arranged below the turning assembly during grinding, a servo motor, a turning shaft fixed through one end of the grinding roller and fixed at the output end of the servo motor, two connecting rods fixed symmetrically on the circumferential side of the turning shaft in the grinding roller, and the ends, away from the turning shaft, of the connecting rods being fixed to the inner wall of the grinding roller, the grinding roller being turned over after grinding, the turning assembly being arranged below the grinding assembly, the arc-shaped sieve plate and the turning assembly being arranged in the lower part of the grinding roller, the recycled plastic particles after grinding falling onto the arc-shaped sieve plate and being collected, the recycled plastic particles on the arc-shaped sieve plate being turned and sieved by the turning plate driven by the rotating shaft two driven by the rotating motor two, the particles with qualified diameters being sieved and conveyed into the receiving frame, and the particles with unqualified diameters being left in the grinding roller and being collected by the arc-shaped grinding plate in the grinding roller after secondary turning and entering the next grinding cycle, during work, the recycled plastic raw materials needing to be ground being accommodated in the grinding roller, the connecting plates being fixed on the support seats through the support seats, the support plates being fixed on the connecting plates through the connecting plates, the support rollers on the support plates providing auxiliary support for the grinding roller, the raw materials leaking out of the sieve holes of the arc-shaped sieve plate being received by the connecting frame, the raw material particles of the recycled plastic being ground into particles by the cooperation of the grinding rollers and the arc-shaped grinding plate during work, the recycled plastic particles being turned and sieved on the arc-shaped sieve plate by the turning assembly after grinding, and the whole grinding roller being turned over by the servo motor during work.

[0010] Further, the two ends of the grinding roller are closed, the central axis of the grinding roller is horizontally arranged, and the two support seats are arranged symmetrically below the support ring, the circumferential side of each support ring is provided with a movable slot, the arc-shaped sieve plate is uniformly provided with vertical sieve holes, and the grinding roller is movably connected with the support roller through the movable slot on the support ring.

[0011] Further, the two connecting strips are respectively fixed with two connecting plates, four corners of the top of each connecting plate are fixed with a support plate, the upper part between two support plates located at the same short side of the top of the same connecting plate is movably connected with a support roller, and the support roller is movably arranged between the support ring, the two support rollers above the same connecting plate are movably arranged in the movable slot on the same support ring, and the two support rollers above the same connecting plate are movably arranged in the movable slot on the same support ring, so that the grinding roller is well supported on the support seat during work.

[0012] Further, the bottom of the material receiving frame is fixedly connected with a material collecting hopper, the output end of the material collecting hopper is fixedly connected with a material output pipe for recycling plastics, the material receiving frame is movably connected with the lower part of the circumferential side of the grinding roller, the recycled plastic particles screened out from the grinding roller are guided into the material collecting hopper through the material receiving frame, and the recycled plastic particles are collected in the material collecting hopper and output through the material output pipe.

[0013] Further, the rotating shaft one penetrates through one end of the grinding roller and is movably connected with the inner wall of the grinding roller away from the rotating motor one, the rotating shaft one is fixed with a rotating disc at the two edges of the circumferential side in the grinding roller, the rotating motor one drives the rotating shaft one to rotate, drives the rotating disc to rotate, and drives the grinding roller to roll in the process of rotating the rotating disc, and grinds the recycled plastic particles.

[0014] Further, the output end of the rotating motor two is fixed with a rotating shaft two penetrating through one end of the grinding roller, the end of the rotating shaft two away from the rotating motor two is movably connected with the inner wall of the grinding roller away from the rotating motor two, and the rotating motor two drives the rotating shaft two to rotate, drives the turnover plate to rotate, and drives the recycled plastic particles after grinding to be turned over.

[0015] Further, the central part of the end of the grinding roller away from the servo motor is provided with a movable hole, the movable hole is movably connected with a material conveying cylinder, the end of the material conveying cylinder away from the grinding roller is fixed with a driving motor, the output end of the driving motor is fixed with an inner shaft penetrating through one end of the material conveying cylinder, the circumferential side of the inner shaft in the material conveying cylinder is fixed with a spiral blade for conveying recycled plastic materials, and the spiral blade is movably connected in the material conveying cylinder.

[0016] Further, the outer side of the grinding roller is fixedly connected with a feeding pipe on the upper part of the periphery of the feeding cylinder, the top end of the feeding pipe is connected with a conveying device for conveying the recycled plastic raw materials that need to be ground, the lower part of the periphery of the feeding cylinder in the grinding roller is fixedly connected with a feeding port, and the lower part of the periphery of the feeding cylinder on the outer side of the grinding roller is fixedly connected with a support column one. In the rotation of the spiral blade in the grinding cylinder, the recycled plastic particles in the feeding pipe are conveyed into the feeding cylinder and then to the feeding port and the grinding roller.

[0017] Further, the bottom of the servo motor is fixedly connected with a support column two, and the bottom ends of the support column one and the support column two are fixed to the top of the two support bases, so that, during the work, the servo motor drives the rotating shaft and the connecting rod to rotate and turn over the grinding roller.

[0018] Further, the filtering and grinding method for producing recycled plastics comprises the following process flow:

[0019] S1: first, start the servo motor to drive the rotating shaft to rotate, and then drive the connecting rod and the grinding roller to rotate until the arc-shaped sieve plate on the grinding roller is upward and the arc-shaped grinding plate is downward;

[0020] S2: after the position of the grinding roller is set, start the driving motor to drive the inner shaft to rotate and drive the spiral blade to rotate. At this time, the recycled plastic raw materials are conveyed into the feeding cylinder in the feeding pipe, and then, in the feeding cylinder, the recycled plastic raw materials are driven into the feeding port by the rotation of the spiral blade and then fall into the grinding roller and gather on the arc-shaped grinding plate in the lower part of the grinding roller;

[0021] S3: after ten minutes of feeding, stop the driving motor to stop the feeding, start the rotating motor one included in the grinding assembly to drive the rotating shaft one to rotate, and then, in the rotation of the rotating shaft one, drive the two rotating discs to rotate and drive the grinding rollers to roll. In the rolling of the grinding rollers, the recycled plastic materials on the arc-shaped grinding plate are ground;

[0022] S4: after every twenty minutes of grinding the plastic materials, start the servo motor to drive the rotating shaft and the connecting rod to turn over the grinding roller so that the arc-shaped sieve plate is rotated to be aligned with the receiving frame;

[0023] S5: after the grinding roller is turned over, stop the rotating motor one to work, the ground recycled plastic raw materials are gathered inside the arc-shaped sieve plate on the grinding roller, and then start the rotating motor two to drive the rotating shaft two to rotate. In the rotation of the rotating shaft two, the turning plate is driven to rotate, and in the rotation of the turning plate, the ground recycled plastic raw material particles on the arc-shaped sieve plate are turned over so that the recycled plastic raw material particles of the appropriate size fall into the receiving frame;

[0024] S6: The recycled plastic particles falling into the receiving frame enter the collecting hopper, and fall into the discharging square tube at the collecting hopper, the bottom end of the discharging square tube is communicated with the external receiving equipment, and the output to the external receiving equipment is discharged in the discharging square tube;

[0025] S7: The rotating motor two drives the rotating shaft two to rotate, drives the turnover plate to rotate for five minutes, then restarts the servo motor to reverse, drives the grinding drum to turn back to the original position, the unqualified plastic blocks screened are re-fallen on the arc-shaped grinding plate, the rotating motor two stops driving the rotating shaft two to rotate, and the driving motor is started to drive the inner shaft to drive the spiral blade to feed, so that the material is conveyed to the grinding drum for the next working cycle.

[0026] The present application has the following beneficial effects:

[0027] The present application has the following beneficial effects: ACCOMPA N YING DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 The structure of the filtering and grinding device for recycling plastic production is partially cut open.

[0030] Figure 2 isometric view of the half section of the grinding roller;

[0031] Figure 3 isometric view of the structure of the support seat;

[0032] Figure 4 isometric view of the structure of the receiving frame;

[0033] Figure 5 isometric view of the structure of the grinding assembly;

[0034] Figure 6 isometric view of the structure of the turnover assembly;

[0035] Figure 7 isometric view of the structure of the part section of the feeding cylinder;

[0036] Figure 8 isometric view of the structure of the servo motor;

[0037] Figure 9 isometric view of the structure of the complete filtering and grinding device for recycling plastic production;

[0038] Figure 10 flow chart of the filtering and grinding method for recycling plastic production.

[0039] Reference signs:

[0040] 1. Grinding roller; 101. Arc-shaped sieve plate; 102. Sieve hole; 103. Arc-shaped grinding plate; 104. Movable hole; 105. Support ring; 106. Movable groove;

[0041] 2. Support seat; 201. Connecting plate; 202. Support plate; 203. Support roller;

[0042] 3. Receiving frame; 301. Connecting strip; 302. Material collecting hopper; 303. Discharge square tube;

[0043] 4. Grinding assembly; 401. Rotating motor one; 402. Rotating shaft one; 403. Turntable; 404. Grinding roller;

[0044] 5. Turnover assembly; 501. Rotating motor two; 502. Rotating shaft two; 503. Turnover plate;

[0045] 6. Feeding cylinder; 601. Driving motor; 602. Inner shaft; 603. Spiral blade; 604. Feeding pipe; 605. Feeding port; 606. Support column one;

[0046] 7. Servo motor; 701. Turnover shaft; 702. Connecting rod; 703. Support column two. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. Specific embodiments

[0048] Please refer to Figure 1 , 2 , 3, 4, 7, 8, 9, the present application is a filter grinding device for recycling plastic production, including the upper part of the fixed arc-shaped sieve plate 101 on the side, the lower part of the fixed arc-shaped grinding plate 103 of the grinding roller 1, both ends of the grinding roller 1 are fixed support ring 105, the side of the support ring 105 is provided with movable slot 106, two support ring 105 below are provided with support seat 2, the top of two support seat 2 is close to the edge of the fixed connecting plate 201, four corners of the connecting plate 201 are provided with support plate 202, two support plates 202 between the top of one support plate 202 and the short edge are rotatably connected with support roller 203, two support rollers 203 above the same support plate 202 are movably connected in the lower part of the movable slot 106 on the same support ring 105, supporting the grinding roller 1, the movable connection in the movable hole 104 of the grinding roller 1 one end is provided with the feeding cylinder 6, the upper part of the side of the grinding roller 1 outside is fixed with the feeding pipe 604, the top of the feeding pipe 604 is communicated with the device outside the conveying recycled plastic material, the side of the feeding cylinder 6 below the feeding pipe 604 is fixed with support column one 606, the bottom of the support column one 606 is fixed on a support seat 2, both ends of the feeding cylinder 6 are closed, the lower part of the side of the feeding cylinder 6 in the grinding roller 1 is provided with feeding port 605, the end of the feeding cylinder 6 outside the grinding roller 1 is fixed with driving motor 601, the driving motor 601 drives the inner shaft 602 through one end of the feeding cylinder 6, and drives the spiral blade 603 to rotate, the end of the feeding cylinder 6 outside the grinding roller 1 away from the feeding cylinder 6 is provided with servo motor 7, the bottom of the servo motor 7 is fixed with support column two 703, the bottom of the support column two 703 is fixed on the support seat 2 away from the support column one 606, the output end of the servo motor 7 is fixed with turning shaft 701, and the turning shaft 701 is fixed on one end of the grinding roller 1, the side of the turning shaft 701 in the grinding roller 1 is fixed with two connecting rods 702 fixed with the grinding roller 1, and the bottom of the servo motor 7 is fixed with support column two 703, the support column two 703 is fixed on the top of the other support seat 2, the lower part of the side of the grinding roller 1 is movably connected with the receiving frame 3, both ends of the receiving frame 3 are fixed with the connecting strip 301 fixed with two connecting plates 201, the bottom of the receiving frame 3 is fixed with the collecting hopper 302, and the output end of the collecting hopper 302 is fixed with the discharge pipe 303, and the bottom of the discharge pipe 303 is communicated with the pipeline for outputting the recycled plastic after grinding.

[0049] Specific, in the work, first feeding pipe 604 will be recycled plastic material into the material cylinder 6, by starting drive motor 601 drive shaft 602 rotation, and drive screw blade 603 rotation, in the process of screw blade 603 rotation, will be transported into the material cylinder 6 material into the material cylinder 6 on the inlet 605, and fall into the grinding roller 1, (according to the material capacity setting time for ten minutes, after feeding, drive motor 601 stop working), grinding work, after grinding, start servo motor 7, drive turnover shaft 701, connecting rod 702 and grinding roller 1 rotation to flip, at this time, the arc-shaped sieve plate 101 downward, arc-shaped grinding plate 103 upward, arc-shaped sieve plate 101 is arranged in the receiving frame 3, grinding roller 1 flip, support ring 105 through the movable slot 106 and support roller 203 rolling fit, support roller 203 is fixed on the support plate 202 of connecting plate 201, auxiliary support grinding roller 1.

[0050] Further, in the process of operation, first through the arc-shaped grinding plate 103 in the material cylinder 6 input material, material collection on the arc-shaped grinding plate 103, and through the grinding assembly 4 grinding 20 minutes, after grinding 20 minutes, can start servo motor 7, drive turnover shaft 701 and connecting rod 702, drive grinding roller 1 flip, and in the process of grinding roller 1 flip, the grinding roller 1 in the grinding of recycled plastic particles fall on the arc-shaped sieve plate 101, and be collected by arc-shaped sieve plate 101, screening recycled plastic particles, so as to realize the grinding and screening of recycled plastic in grinding roller 1. Specific embodiments

[0051] Please refer to Figure 1 、 2 , 5, on the basis of the first embodiment, in the grinding work, grinding assembly 4 is arranged in the lower part of the grinding roller 1, drive motor 601 a fixed in the grinding roller 1 away from the material cylinder 6 of one end, the output end of drive motor 601 a fixed with through the rotating shaft one 402 of one end of grinding roller 1, and the rotating shaft one 402 away from the rotating motor one 401 one end and rotating connection in the grinding roller 1 below the material cylinder 6, and the both ends of rotating shaft one 402 are fixed rotating disc 403, two rotating disc 403 between the annular array rotating connection grinding roller 404, the edge of grinding roller 404 extends rotating disc 403 side, and contact with arc-shaped grinding plate 103, the lowermost grinding roller 404 and arc-shaped grinding plate 103 in the lower part of the fixed inner arc surface contact.

[0052] Specific, into the material in the grinding drum 1 in the grinding process, start rotating motor one 401, rotating motor one 401 drive shaft one 402, shaft one 402 drive two turntable 403 rotation, in the process of two turntable 403 rotation, drive grinding roller 404 in the grinding drum 1 rotation, and constantly rolling over the arc-shaped grinding plate 103 on the recycled plastic raw material, so that the recycled plastic raw material is fully ground.

[0053] Further, in the process of grinding recycled plastic raw material, when the recycled plastic raw material is transported into the grinding drum 1, under the action of the rotating motor one 401 driven grinding roller 404 rotation, the grinding roller 404 and the inner arc of the arc-shaped grinding plate 103 is constantly ground, the recycled plastic raw material is fully ground. Specific embodiments

[0054] Please refer to Figure 1 、 2 , 4, 6, on the basis of specific embodiment one and specific embodiment two, the grinding drum 1 is turned over, at this time the fixed arc-shaped sieve plate 101 in the grinding drum 1 is arranged at the lower part of the grinding drum 1, the turning assembly 5 is arranged at the lower part of the grinding drum 1, the rotating motor two 501 is fixed at the end of the grinding drum 1, and the rotating motor two 501 and the rotating motor one 401 are symmetrically arranged at the end of the grinding drum 1, the output end of the rotating motor two 501 fixed shaft two 502 passes through the end of the grinding drum 1, and is rotationally connected to the inner wall of the grinding drum 1 outside the material conveying cylinder 6, the shaft two 502 in the grinding drum 1 is fixed with the turning plate 503 in the form of annular array on the side, the turning plate 503 located at the lowermost of the shaft two 502 is in contact with the inner arc of the arc-shaped sieve plate 101, and the receiving frame 3.

[0055] Specifically, during the working process, the rotating motor two 501 is started, the rotating motor two 501 drives the shaft two 502 to drive the turning plate 503 to rotate, and the turning plate 503 turns over the recycled plastic particles collected on the arc-shaped sieve plate 101, the particles leak into the receiving frame 3 through the sieve hole 102 on the arc-shaped sieve plate 101, and fall into the material collecting hopper 302 for collection and conveying to the discharge pipe 303.

[0056] Further, after the rotating motor two 501 drives the shaft two 502, the shaft two 502 rotates, drives the turning plate 503 to turn over the recycled plastic particles on the arc-shaped sieve plate 101, and the recycled plastic particles ground to the qualified particle size are conveyed to the receiving frame 3 through the sieve hole 102 on the arc-shaped sieve plate 101, and the unqualified particle size is left in the grinding drum 1, and falls into the arc-shaped grinding plate 103 in the grinding drum 1 again with the turning over of the grinding drum 1, and enters the next grinding cycle.

[0057] Please refer to Figures 1-10 , the present application is a filtering and grinding device and method for recycling plastic, comprising the following steps:

[0058] S1: First, start the servo motor 7 to drive the turnover shaft 701 to rotate, after the turnover shaft 701 rotates, drive the connecting rod 702 and the grinding drum 1 to rotate, until the arc-shaped sieve plate 101 on the grinding drum 1 is upwards and the arc-shaped grinding plate 103 is downwards;

[0059] S2: After setting the position of the grinding drum 1, start the drive motor 601 to drive the inner shaft 602 to rotate, drive the spiral blade 603 to rotate, at this time, the recycled plastic raw materials are conveyed in the feeding pipe 604 to the feeding cylinder 6, in the feeding cylinder 6, the recycled plastic raw materials driven into the feeding cylinder 6 by the spiral blade 603 in the rotating process are driven into the feeding port 605 and fall into the grinding drum 1 and gather on the arc-shaped grinding plate 103 in the lower part of the grinding drum 1;

[0060] S3: After ten minutes of feeding, stop the drive motor 601 from working, stop feeding, start the rotating motor one 401 included in the grinding assembly 4, the rotating motor one 401 drives the rotating shaft one 402 to rotate, and in the rotating process of the rotating shaft one 402, drive the two rotating discs 403 to rotate, drive the grinding roller 404 to roll, and in the rolling process of the grinding roller 404, grind the recycled plastic materials on the arc-shaped grinding plate 103;

[0061] S4: After every twenty minutes of grinding plastic materials, start the servo motor 7 to drive the turnover shaft 701 and the connecting rod 702 to drive the grinding drum 1 to overturn, so that the arc-shaped sieve plate 101 rotates to align with the receiving frame 3;

[0062] S5: After the grinding drum 1 is overturned, stop the rotating motor one 401 from working, the ground recycled plastic raw materials are gathered inside the arc-shaped sieve plate 101 on the grinding drum 1, and start the rotating motor two 501 to drive the rotating shaft two 502 to rotate, in the rotating process of the rotating shaft two 502, drive the turnover plate 503 to rotate, in the rotating process of the turnover plate 503, overturn the ground recycled plastic raw material particles on the arc-shaped sieve plate 101, so that the recycled plastic raw material particles of the appropriate size fall into the receiving frame 3;

[0063] S6: The recycled plastic particles falling into the receiving frame 3 enter the material collecting hopper 302, fall into the discharge square pipe 303, the bottom end of the discharge square pipe 303 is in communication with the external receiving equipment, and the recycled plastic particles output to the external receiving equipment in the discharge square pipe 303;

[0064] S7: start the rotation motor 2 501 to drive the rotation shaft 2 502 to rotate, drive the turnover plate 503 to rotate for five minutes, then restart the servo motor 7 to reverse, drive the grinding drum 1 to turn back to the original position, the unqualified plastic blocks screened fall back to the arc-shaped grinding plate 103, stop the rotation motor 2 501 to drive the rotation shaft 2 502 to rotate, and start the drive motor 601 to drive the inner shaft 602 to drive the spiral blade 603 to feed, so that the material is conveyed into the grinding drum 1 to perform the next working cycle.

[0065] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. Filtering and grinding apparatus for the production of recycled plastics, comprising: A grinding drum (1), wherein the upper portion of the circumference of the grinding drum (1) passes through a fixed arc-shaped screen plate (101), and the lower portion of the circumference of the grinding drum (1) passes through a fixed arc-shaped grinding plate (103); Support rings (105) are fixed at both ends of the grinding drum (1), and movable grooves (106) are provided on the circumference of the support rings (105); Support bases (2), with connecting plates (201) fixed at the edges of the tops of the two support bases (2) close to each other; A material receiving frame (3), wherein the material receiving frame (3) is arranged to be through-connected from top to bottom, and both ends of the material receiving frame (3) are fixed with connecting strips (301); A grinding assembly (4) comprises a rotating motor (401) fixed at one end of a grinding drum (1), a rotating disk (403) and a grinding roller (404), wherein a rotating shaft (402) is fixed to the output end of the rotating motor (401), and the edges between the two rotating disks (403) are connected to the grinding rollers (404) for grinding recycled plastics in a circular array, wherein the edges of the grinding rollers (404) extend out of the circumference of the rotating disk (403), and the grinding roller (404) located at the bottom contacts the inner arc surface of the arc-shaped grinding plate (103) in the grinding drum (1) during rotation; The flip assembly (5) includes a second rotating motor (501) fixed to one end of the grinding drum (1) and placed above the first rotating motor (401), a second rotating shaft (502) and a flip plate (503), the flip plates (503) being fixed in a circular array around the second rotating shaft (502), and the top of the topmost flip plate (503) being in contact with the inner upper portion of the arc-shaped screen plate (101). During the grinding process, the grinding assembly (4) is always arranged below the flip assembly (5); A servo motor (7), wherein the output end of the servo motor (7) is fixed with a flip shaft (701) that passes through and is fixed to one end of the grinding drum (1); two connecting rods (702) are symmetrically fixed to the circumference of the flip shaft (701) in the grinding drum (1), and the ends of the connecting rods (702) away from the flip shaft (701) are both fixed to the inner wall of the grinding drum (1); After grinding, the grinding drum (1) is turned over, and the turning assembly (5) is arranged below the grinding assembly (4). The arc screen plate (101) and the turning assembly (5) are both arranged at the lower part of the grinding drum (1). During the turning over, the ground recycled plastic particles fall onto the arc screen plate (101) and are collected. The rotating motor 2 (501) drives the rotating shaft 2 (502) to drive the turning plate (503) to turn over the recycled plastic particles on the arc screen plate (101) to be screened. The particles with qualified particle size are screened and transported to the receiving frame (3). The particles with unqualified particle size remain in the grinding drum (1), and are collected again by the arc grinding plate (103) in the grinding drum (1) after the second turning over, and enter the next grinding cycle.

2. The filtering and grinding device for recycling plastic production according to claim 1, characterized in that: The two ends of the grinding roller (1) are closed, the central axis of the grinding roller (1) is horizontally arranged, and the two support bases (2) are symmetrically arranged below the grinding roller (1) and are arranged below the support ring (105), the periphery of each support ring (105) is provided with a movable groove (106), and the arc-shaped sieve plate (101) is uniformly provided with vertical sieve holes (102).

3. The filtering and grinding device for recycling plastic production according to claim 2, characterized in that: Two connecting strips (301) are respectively fixed with two connecting plates (201), four corners of the top of each connecting plate (201) are fixed with support plates (202), the upper portions between two support plates (202) located at the same short side of the top of the same connecting plate (201) are jointly connected with support rollers (203), and the two support rollers (203) above the same connecting plate (201) are movably connected in the movable grooves (106) on the same support ring (105) and roll with the support ring (105).

4. The filtering and grinding device for recycling plastic production according to claim 1, characterized in that: The bottom of the material receiving frame (3) is fixedly connected with a material collecting hopper (302), and the output end of the material collecting hopper (302) is fixedly connected with a material outlet square tube (303) for outputting recycled plastics, and the material receiving frame (3) is movably connected with the lower portion of the periphery of the grinding roller (1).

5. The filtering and grinding device for recycling plastic production according to claim 1, characterized in that: The rotating shaft one (402) penetrates through one end of the grinding roller (1) and is rotatably connected with the inner wall of the grinding roller (1) away from the rotating motor one (401), and the rotating shaft one (402) is fixed with rotating discs (403) at the two edges of the periphery in the grinding roller (1).

6. The filtering and grinding device for recycling plastic production according to claim 1, characterized in that: The output end of the rotating motor two (501) is fixed with a rotating shaft two (502) penetrating through one end of the grinding roller (1), and the end of the rotating shaft two (502) away from the rotating motor two (501) is rotatably connected with the inner wall of the grinding roller (1) away from the rotating motor two (501).

7. The filtering and grinding device for recycling plastic production according to claim 1, characterized in that: The central part of one end of the grinding roller (1) away from the servo motor (7) is provided with a movable hole (104), the movable hole (104) is movably connected with a material conveying cylinder (6) penetrating therethrough, the end of the material conveying cylinder (6) away from the grinding roller (1) is fixed with a driving motor (601), the output end of the driving motor (601) is fixed with an inner shaft (602) penetrating through one end of the material conveying cylinder (6), the periphery of the inner shaft (602) in the material conveying cylinder (6) is fixed with helical blades (603) for conveying recycled plastic materials, and the helical blades (603) are movably connected in the material conveying cylinder (6).

8. The filtering and grinding device for recycling plastic production according to claim 7, characterized in that: The periphery of the upper part of the material conveying cylinder (6) on the outer side of the grinding roller (1) is fixedly connected with an inlet pipe (604), the top end of the inlet pipe (604) is connected with a conveying device for conveying recycled plastic raw materials requiring grinding treatment, the periphery of the lower part of the material conveying cylinder (6) in the grinding roller (1) is fixedly connected with an inlet (605), and the periphery of the lower part of the material conveying cylinder (6) on the outer side of the grinding roller (1) is fixedly connected with a support column one (606).

9. The filtering and grinding device for recycling plastic production according to claim 8, characterized in that: The bottom of the servo motor (7) is fixed with a support column two (703), and the bottom ends of the support column one (606) and the support column two (703) are fixed to the top of the two support seats (2).

10. The filtering and grinding method for recycling plastic production is applied to the filtering and grinding device for recycling plastic production in any one of claims 1-9, characterized in that: It comprises the following steps: First, start the servo motor (7) to drive the turnover shaft (701) to rotate, and after the turnover shaft (701) rotates, drive the connecting rod (702) and the grinding roller (1) to rotate, until the arc-shaped sieve plate (101) on the grinding roller (1) is upward, and the arc-shaped grinding plate (103) is downward; After the position of the grinding roller (1) is set, start the driving motor (601) to drive the inner shaft (602) to rotate, and drive the spiral blade (603) to rotate, at this time, the recycled plastic raw materials in the feeding pipe (604) are conveyed into the feeding cylinder (6), and in the feeding cylinder (6), the recycled plastic raw materials driven into the feeding cylinder (6) are driven into the feeding port (605) by the rotation of the spiral blade (603), and fall into the grinding roller (1), and are collected on the arc-shaped grinding plate (103) in the lower part of the grinding roller (1); After ten minutes of feeding, stop the driving motor (601) from working, stop feeding, and start the rotating motor one (401) included in the grinding assembly (4), the rotating motor one (401) drives the rotating shaft one (402) to rotate, and in the rotation of the rotating shaft one (402), drives the two rotating discs (403) to rotate, drives the grinding roller (404) to roll, and in the rolling of the grinding roller (404), grinds the recycled plastic materials on the arc-shaped grinding plate (103); After every twenty minutes of grinding plastic materials, start the servo motor (7) to drive the turnover shaft (701) and the connecting rod (702) to drive the grinding roller (1) to overturn, so that the arc-shaped sieve plate (101) is rotated to align with the receiving frame (3); After the grinding roller (1) is overturned, stop the rotating motor one (401) from working, the ground recycled plastic raw materials are collected inside the arc-shaped sieve plate (101) on the grinding roller (1), and the rotating motor two (501) is started to drive the rotating shaft two (502) to rotate, in the rotation of the rotating shaft two (502), drives the turnover plate (503) to rotate, in the rotation of the turnover plate (503), overturns the ground recycled plastic raw material particles on the arc-shaped sieve plate (101), so that the recycled plastic raw material particles of appropriate size fall into the receiving frame (3); The recycled plastic particles falling into the receiving frame (3) enter the material collecting hopper (302), fall into the discharge square pipe (303) in the material collecting hopper (302), and the bottom end of the discharge square pipe (303) is communicated with the external receiving equipment, and the recycled plastic particles in the discharge square pipe (303) are output to the external receiving equipment; Start rotating motor two (501) drive shaft two (502) rotation, drive plate (503) rotation five minutes after the re-start servo motor (7) reverse, drive grinding drum (1) turn back to the original position, the screening of unqualified plastic block re-fall to the arc grinding plate (103), stop rotating motor two (501) drive shaft two (502) rotation, and start drive motor (601), re-drive the inner shaft (602) drive screw blade (603) feed, so that the material is transported to the grinding drum (1), the next cycle of work.

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