A crushing system for recycling waste foam plastics

Abstract

The present invention discloses a crushing system for recycling waste foam plastics, including a crusher and crushing rollers rotating in opposite directions in the crusher, and also including: a vertical feed channel, which is arranged on the conveying barrel of the crusher; a feeding assembly, which includes a feed roller rotatably connected to the first end of the crushing roller, the feed roller rotates slowly with the crushing roller, and the feed roller faces the vertical feed channel. Specifically, it relates to the technical field of waste foam recycling. When the foam is crushed, the large block of foam enters along the vertical feed channel, and is clamped and roughly cut by the slowly rotating feed roller. The slow rotation can reduce the flying of finely crushed foam, and then the roughly cut foam is conveyed to the crushing roller for fine crushing to avoid the vertical feed channel. At the same time, the fan blades will rotate to suck the debris generated by the fine crushing of the crushing roller, and further avoid the small particles after crushing from the vertical feed channel.

Description

Technical Field

[0001] The invention relates to the technical field of waste foam recycling, in particular to a crushing system for recycling waste foam plastics. Background Art

[0002] The recycling of waste foam is mainly to reduce the pollution of foam to the environment and create economic value. Waste foam recycling includes direct hot melting for the manufacture of other chemical products, and it can also be crushed and used to make new foam or other building materials.

[0003] According to patent number CN207874633U, published (announcement) date: 2018-09-18, a silo system for a hot melt machine for recycling waste foam plastics is disclosed, including a conveyor belt, a support rod is fixedly installed at the bottom of the conveyor belt, a crushing bin is fixedly connected to the bottom of the conveyor belt and located on the back of the support rod, the back of the crushing bin is connected to the inlet of fan 1 through a pipeline, the outlet of fan 1 is connected to a duct conversion device, the top of the duct conversion device is connected to duct 1, the duct conversion device is connected to duct 2 on the side away from fan 1 and located on the back of duct 1, and the left side of duct 1 penetrates and extends to the interior of silo 1. The silo system of the hot melt machine for recycling waste foam plastics greatly saves space, can provide sufficient materials for hot melting, and ensure continuous production. Users can choose different silos according to the amount of materials, which is convenient and fast, and convenient for users to use.

[0004] In the prior art including the above-mentioned patent, a crusher is used to crush the foam. However, the foam is light in weight, so a high-efficiency rotary crusher is used. During the crushing, the airflow generated by the rotating crushing roller can easily cause the crushed small particles to float from the feed port, causing environmental pollution during the crushing process and affecting the respiratory tract of the workers. Summary of the invention

[0005] The purpose of the present invention is to provide a crushing system for recycling waste foam plastics, aiming to solve the problem of small particles after crushing flying from a feed inlet.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a crushing system for recycling waste foam plastics, comprising a crusher and crushing rollers rotating in opposite directions in the crusher, and further comprising:

[0007] A vertical feed channel, which is arranged on the conveying barrel of the pulverizer;

[0008] A feed assembly, comprising a feed roller rotatably connected to the first end of the crushing roller, the feed roller rotates slowly with the crushing roller, and the feed roller faces the vertical feed channel;

[0009] The air suction mechanism comprises a fan blade arranged at the second end of the pulverizer, and the fan blade is driven to rotate to suck the conveying barrel.

[0010] Preferably, a support block is provided on the conveying barrel, and a plurality of elastic feed plates are provided on the feed roller in a circular array, and the elastic feed plates are attached to the support block to feed materials to the crushing roller.

[0011] Preferably, the pulverizing roller is provided with a fine material spiral channel, and the pulverizing roller rotates to convey the pulverized foam to the conveying barrel through the fine material spiral channel.

[0012] Preferably, the two crushing rollers are provided with crescent crushing blocks in a staggered linear array, the conveying barrel is provided with a scraper, a feed port is provided on the fine material spiral path, and the scraper scrapes material along the edge of the crescent crushing block toward the feed port.

[0013] Preferably, the crescent crushing block is provided with corrugated strips, and two of the corrugated strips are interlaced to rub the foam.

[0014] Preferably, stacking blocks are symmetrically arranged in the conveying barrel, and conical barrel grooves corresponding to the crushing rollers are opened on the stacking blocks, and the conical barrel grooves include a large end located at the second end of the conveying barrel.

[0015] Preferably, the fan blades are driven to deliver air toward the large end to drive the finely divided foams to rub against each other.

[0016] Preferably, a discharge plate is provided at the second end of the conveying barrel, and an air pipe fixedly connected to the large end is provided on the discharge plate.

[0017] Preferably, a speed change assembly is provided on the conveying barrel, and the speed change assembly includes a planetary gear rotatably connected to the feed roller and an outer planetary gear ring provided on the inner wall of the conveying barrel, and a central gear is provided on the crushing roller.

[0018] Preferably, a filter plate is provided on the unloading plate, and a scraping plate is provided on the crushing roller, and the scraping plate is driven to rotate intermittently to scrape the filter plate.

[0019] In the above technical scheme, the present invention provides a crushing system for recycling waste foam plastics, which has the following beneficial effects: when the foam is crushed, large pieces of foam enter along the vertical feed channel, and are clamped and roughly cut by the slowly rotating feed roller. The slow rotation can reduce the flying of finely crushed foam, and then the roughly cut foam is transported to the crushing roller for fine crushing to avoid the vertical feed channel. At the same time, the fan blades will rotate for suction to suck out the debris generated by the fine crushing of the crushing roller, further avoiding the flying of small particles after crushing from the vertical feed channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 An overall schematic diagram provided for an embodiment of the present invention;

[0022] Figure 2 An explosion diagram of an air extraction mechanism provided in an embodiment of the present invention;

[0023] Figure 3 An exploded schematic diagram of a feed assembly, a crushing roller and a speed change assembly provided in an embodiment of the present invention;

[0024] Figure 4 An exploded schematic diagram of a crushing roller, a scraping plate and a speed change assembly provided in an embodiment of the present invention;

[0025] Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle;

[0026] Figure 6 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0027] Figure 7 A transparent schematic diagram of a crushing roller provided in an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of a crescent crushing block provided in an embodiment of the present invention;

[0029] Fig. 9 An exploded schematic diagram of a crushing roller, a scraping plate and a speed change assembly provided in an embodiment of the present invention;

[0030] Fig.10 An overall cross-sectional schematic diagram provided for an embodiment of the present invention;

[0031] Fig.11 for Fig.10 The enlarged schematic diagram at C in the middle;

[0032] Fig.12 for Fig.10 Enlarged schematic diagram at point D in the middle.

[0033] Description of reference numerals:

[0034] 1. Crusher; 10. Crushing roller; 101. Crescent crushing block; 1011. Corrugated strip; 102. Fine material spiral channel; 1021. Feed port; 103. Rotating protrusion; 11. Conveying barrel; 111. Superposition block; 112. Conical barrel groove; 113. Engaging groove; 12. Bracket; 13. Vertical feed channel; 131. Rotating hole; 14. Scraper; 2. Feed assembly; 20. Support block; 21. Feed roller; 22. Elastic feed plate; 23. Rotating shaft; 3. Exhaust mechanism; 31. Fan blade; 311. Air pipe; 32. Unloading plate; 321. Stop roller; 33. Isolation cover; 34. Filter plate; 35. Scraping plate; 351. Spring; 4. Speed ​​change assembly; 41. Fixed ring; 411. Outer planetary gear ring; 42. Planetary gear. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0036] like Figure 1-12 As shown, a pulverizing system for recycling waste foam plastics includes a pulverizer 1 and pulverizing rollers 10 located in the pulverizer 1 and rotating in opposite directions, and also includes:

[0037] A vertical feed channel 13, which is arranged on the conveying barrel 11 of the pulverizer 1;

[0038] A feed assembly 2, comprising a feed roller 21 rotatably connected to a first end of the crushing roller 10, the feed roller 21 rotates slowly along with the crushing roller 10, and the feed roller 21 faces the vertical feed channel 13;

[0039] The suction mechanism 3 includes a fan blade 31 disposed at the second end of the pulverizer 1 , and the fan blade 31 is driven to rotate to suck the conveying barrel 11 .

[0040] Specifically, a rotating hole 131 is opened on the vertical feed channel 13, and the rotating hole 131 is used for the crushing roller 10 to rotate or connect to the output end of the motor. The crushing rollers 10 are arranged with parallel axes, and the two crushing rollers 10 rotate towards each other to crush the foam. The crusher 1 includes a conveying barrel 11 and a bracket 12 for supporting the conveying barrel 11. The vertical feed channel 13 is arranged at the first end of the conveying barrel 11 (with Figure 2 For reference, the first end is the left end), the first end of the crushing roller 10 is rotatably connected to the feed roller 21 (with Figure 3For reference, the first end is the right end and the second end is the left end), the rotation speed of the feed roller 21 is lower than that of the crushing roller 10, and it rotates slowly (1s / 1~4 turns), and the second end of the conveying barrel 11 is provided with a fan blade 31. When the foam is crushed, the large foam is first pushed toward the feed roller 21 along the vertical feed channel 13, and the large foam is divided into small pieces of foam as the two feed rollers 21 rotate slowly, and the small pieces of foam are pushed into the two crushing rollers 10 rotating in opposite directions for secondary crushing. The slow separation of large foam can prevent small particles of foam from floating during crushing, and at the same time, the fan blade 31 will rotate to suck the small particles of foam generated by the two crushing rollers 10 during the crushing process to prevent the small particles of foam from returning to the vertical feed channel 13.

[0041] In the above technical scheme, when the foam is crushed, large pieces of foam enter along the vertical feed channel 13, and are clamped and roughly cut by the slowly rotating feed roller 21. The slow rotation can reduce the flying of finely crushed foam, and then the roughly cut foam is transported to the crushing roller 10 for fine crushing to avoid the vertical feed channel 13. At the same time, the fan blades 31 will rotate for suction to suck out the debris generated by the fine crushing of the crushing roller 10, further avoiding the flying of small particles after crushing from the vertical feed channel 13.

[0042] As an embodiment provided by the present invention, a support block 20 is provided on the conveying barrel 11 , and a plurality of elastic feed plates 22 are provided in a circular array on the feed roller 21 . The elastic feed plates 22 fit the support block 20 to feed materials to the crushing roller 10 .

[0043] Specifically, the liner block 20 is provided with an inclined channel corresponding to the feed roller 21, the inclined channel faces the crushing roller 10, and a plurality of elastic feed plates 22 are arranged in a circumferential array on the feed roller 21. The elastic feed plates 22 fit the inclined channel, and the two feed rollers 21 rotate in opposite directions, so that the elastic feed plates 22 are turned over and fit the inner wall of the vertical feed channel 13 to cut the foam, and then the cut foam is transported to the crushing roller 10 along the inclined channel, and is crushed by the feed roller 21 and the crushing roller 10 rotating at the bottom (in order to Figure 4 For reference, the bottom is the lower end), it is not easy to crush small bubbles into the air.

[0044] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 toward the feed roller 21. As the two feed rollers 21 rotate slowly, the elastic feed plate 22 is flipped and fitted to the inner wall of the vertical feed channel 13 to cut the foam and divide the large foam into small pieces of foam. The small pieces of foam are then transported along the inclined channel to the two crushing rollers 10 that rotate in opposite directions for secondary crushing. At the same time, the fan blades 31 will rotate to suck the small particles of foam generated by the two crushing rollers 10 during the crushing process to prevent the small particles of foam from returning to the vertical feed channel 13.

[0045] As an embodiment provided by the present invention, a fine material spiral channel 102 is provided on the crushing roller 10 , and the crushing roller 10 rotates to convey the crushed foam to the conveying barrel 11 through the fine material spiral channel 102 .

[0046] Specifically, a fine material spiral channel 102 is provided on the crushing roller 10. When the crushing roller 10 is performing foam crushing, static electricity will be generated due to the friction between small particle foams, and the small particle foams will be retained on the crushing roller 10. Subsequently, as the crushing rollers 10 rotate in opposite directions, the small particle foams retained on the crushing rollers 10 due to static electricity will be pushed into the fine material spiral channel 102 for continuous accumulation, and as they accumulate, they will be pushed against each other to push the small particle foams into the discharge end for discharge, thereby reducing the retention of small particle foams and increasing the crushing efficiency.

[0047] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 toward the feed roller 21. As the two feed rollers 21 rotate slowly, the elastic feed plate 22 is flipped and fitted to the inner wall of the vertical feed channel 13 to cut the foam and divide the large foam into small pieces of foam. The small pieces of foam are then transported along the inclined channel to the two crushing rollers 10 that rotate in opposite directions for secondary crushing. At this time, the crushed small particles of foam will be squeezed into the fine material spiral channel 102 as the crushing rollers 10 rotate in opposite directions, so as to push the small particles of foam into the discharge end for discharge. At the same time, the fan blades 31 will rotate to suck the small particles of foam generated by the two crushing rollers 10 during the crushing process to prevent the small particles of foam from returning to the vertical feed channel 13.

[0048] As an embodiment provided by the present invention, crescent crushing blocks 101 are arranged in a linear array on two crushing rollers 10, a scraper 14 is arranged on the conveying barrel 11, a feed port 1021 is opened on the fine material spiral channel 102, and the scraper 14 scrapes the material along the edge of the crescent crushing block 101 toward the feed port 1021.

[0049] Specifically, the two ends of the crescent crushing block 101 are a large end and a small end respectively. The large ends of the two crushing rollers 10 move toward each other to crush the foam, and as they move toward each other, gaps are generated at the two small ends to rub the small particle foam and promote the generation of static electricity. A scraper 14 is provided on the conveying barrel 11. The scraper 14 is an elastic plate. When the crushing rollers 10 rotate toward each other, the scraper 14 will scrape along the crescent crushing block 101 to accumulate small particle foam carrying static electricity between the scraper 14 and the crushing rollers 10, and move with the feed port 1021. The small particle foam carrying static electricity accumulation will be pushed into the feed port 1021 to increase the small particle foam in the fine material spiral channel 102.

[0050] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 to the feed roller 21. As the two feed rollers 21 rotate slowly, the elastic feed plate 22 is flipped and fitted to the inner wall of the vertical feed channel 13 to cut the foam and divide the large foam into small pieces of foam. The small pieces of foam are transported along the inclined channel to the two crushing rollers 10 that rotate in opposite directions for secondary crushing. At this time, the crushed small particle foam will generate static electricity as the crushing rollers 10 rotate in opposite directions and accumulate on the crescent crushing block 101. As the rotation continues, the scraper 14 will push the small particle foam along the feed port 1021 into the fine material spiral channel 102 and discharge it to the lower material end. At the same time, the fan blades 31 will rotate to suck the small particle foam generated by the two crushing rollers 10 during the crushing process to prevent the small particle foam from returning to the vertical feed channel 13.

[0051] As an embodiment provided by the present invention, the crescent crushing block 101 is provided with corrugated strips 1011, and the two corrugated strips 1011 are interlaced to rub the foam.

[0052] Specifically, the corrugated strip 1011 is arranged at the large end of the crescent crushing block 101. The corrugated strip 1011 is an elastic strip. When the large ends of the two crescent crushing blocks 101 are coupled with each other to crush the foam, the two groups of corrugated strips 1011 will deform to increase the squeezing force on the small particle foam, so as to crush it through squeezing friction and reduce the particle size of the foam, so as to facilitate the subsequent friction of the small particle foam in the gap, thereby increasing the possibility of static electricity generation.

[0053] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 to the feed roller 21. As the two feed rollers 21 rotate slowly, the elastic feed plate 22 is flipped and fitted to the inner wall of the vertical feed channel 13 to cut the foam and divide the large foam into small pieces of foam. The small pieces of foam are transported to the crushing roller 10 along the inclined channel. The crescent crushing blocks 101 on the two crushing rollers 10 rotating in opposite directions rub against each other for secondary crushing. At this time, the crushed small particles of foam will rub against each other in the gap as the crushing rollers 10 rotate in opposite directions, generate static electricity, and accumulate and remain on the crescent crushing blocks 101. As the rotation continues, the scraper 14 will push the small particles of foam along the feed port 1021 into the fine material spiral channel 102 and discharge it to the lower material end. At the same time, the fan blades 31 will rotate to suck the small particles of foam generated by the two crushing rollers 10 during the crushing process to prevent the small particles of foam from returning to the vertical feed channel 13.

[0054] As an embodiment provided by the present invention, stacking blocks 111 are symmetrically arranged in the conveying barrel 11 , and conical barrel grooves 112 corresponding to the crushing rollers 10 are opened on the stacking blocks 111 , and the conical barrel grooves 112 include a large end located at the second end of the conveying barrel 11 .

[0055] Specifically, the first end of the stacking block 111 (with Figure 3 For reference, the first end is the right end) and an engaging groove 113 is provided on the conical barrel groove 112, which is coupled with a part of the crescent-shaped crushing block 101 to increase the degree of crushing of the foam. The conical barrel groove 112 includes a large end and a small end, and the large end faces the second end of the conveying barrel 11, which is the unloading end. When the crushing roller 10 rotates at the small end, the crescent-shaped crushing block 101 is coupled with the engaging groove 113 to increase the crushing ability. As the large end of the conical barrel groove 112 gradually expands, the gap between the crescent-shaped crushing block 101 and the conical barrel groove 112 gradually increases, so that the fan blades 31 can suck small particles of foam that are not adsorbed on the crescent-shaped crushing block 101 along the gap.

[0056] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 to the feed roller 21. As the two feed rollers 21 rotate slowly, the elastic feed plate 22 is turned over and attached to the inner wall of the vertical feed channel 13 to cut the foam to divide the large foam into small pieces of foam, and the small pieces of foam are transported to the crushing roller 10 along the inclined channel. The crescent crushing blocks 101 on the two crushing rollers 10 rotating in opposite directions rub against each other and couple with the meshing groove 113 to perform secondary crushing. At this time, the crushed small particles of foam will be crushed along the crushing roller 10. They rotate in opposite directions, and the friction between them in the gap generates static electricity which accumulates and is retained on the crescent crushing block 101. As they continue to rotate, the scraper 14 pushes the small particle foam into the fine material spiral channel 102 along the feed port 1021 and discharges it to the lower material end. At the same time, as the large end of the conical barrel groove 112 gradually expands, the gap between the crescent crushing block 101 and the conical barrel groove 112 gradually increases, and the fan blades 31 rotate to suck the small particle foam generated by the two crushing rollers 10 during the crushing process to prevent the small particle foam from returning to the vertical feed channel 13.

[0057] As an embodiment provided by the present invention, the fan blade 31 is driven to deliver air to the large end to drive the finely divided foam to rub against each other;

[0058] A blanking plate 32 is disposed at the second end of the delivery barrel 11 , and an air delivery pipe 311 fixedly connected to the large end is disposed on the blanking plate 32 .

[0059] Specifically, an isolation cover 33 is provided on the blanking plate 32, and the isolation cover 33 is used to guide the airflow output by the fan blade 31 to be transported to the air delivery pipe 311. The gap between the large end of the cone barrel groove 112 and the crescent crushing block 101 is large, and the second end of the conveying barrel 11 (with Figure 3A discharge plate 32 is provided (the left end is for reference), and a discharge port is provided on the discharge plate 32 in the vertical direction. The fan blade 31 is rotatably connected to the discharge plate 32. The fan blade 31 is driven to rotate by a motor to suck the conveying barrel 11. When sucking, the fan blade 31 will supply air to the air pipe 311 to output the airflow from the air pipe 311 at the large end of the conical barrel groove 112 to produce a mixed flow, and some small particle foams that do not carry static electricity and are sucked by the fan blade 31 will collide with the mixed flow to generate static electricity by mutual friction, so that the small particles of foam condense with each other, which is convenient for discharge. After discharge, the small particle foams can be discharged in clumps and are not easy to float.

[0060] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 to the feed roller 21. As the two feed rollers 21 rotate slowly, the elastic feed plate 22 is turned over and attached to the inner wall of the vertical feed channel 13 to cut the foam to divide the large foam into small pieces of foam, and the small pieces of foam are transported to the crushing roller 10 along the inclined channel. The crescent crushing blocks 101 on the two crushing rollers 10 rotating in opposite directions rub against each other and couple with the meshing groove 113 for secondary crushing. At this time, the crushed small particles of foam will rub against each other in the gap as the crushing rollers 10 rotate in opposite directions to generate static electricity and accumulate and remain in the crescent crushing blocks 101. At the same time, as the large end of the conical barrel groove 112 gradually expands, the gap between the crescent crushing block 101 and the conical barrel groove 112 gradually increases, and the fan blade 31 rotates to suck the small particle foam generated by the two crushing rollers 10 during the crushing process to prevent the small particle foam from returning to the vertical feed channel 13, and the fan blade 31 supplies air to the air pipe 311 to output the airflow from the large end of the air pipe 311 at the conical barrel groove 112 to produce a mixed flow, thereby causing the particle foam mixed flow to collide with each other and generate static electricity.

[0061] As an embodiment provided by the present invention, a speed change assembly 4 is provided on the conveying barrel 11, and the speed change assembly 4 includes a planetary gear 42 rotatably connected to the feed roller 21 and an outer planetary gear ring 411 arranged on the inner wall of the conveying barrel 11, and a central gear is provided on the crushing roller 10.

[0062] Specifically, the speed change assembly 4 is provided with a fixed ring 41 on the inner wall of the conveying barrel 11, and an outer planetary gear ring 411 is provided on the fixed ring 41. A rotating shaft 23 is provided on the feed roller 21, and a planetary gear 42 is rotatably connected to the rotating shaft 23 and coupled with the outer planetary gear ring 411. A central gear is provided on the crushing roller 10, and the central gear is coupled with multiple planetary gears 42. The crushing roller 10 is driven to rotate by a coupling and an electric motor, and then the rotation of the crushing roller 10 drives the central gear to rotate to drive the planetary gears 42 to rotate. When rotating, the feed roller 21 will achieve slow rotation with the movement of the planetary gears 42.

[0063] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 toward the feed roller 21. As the crushing roller 10 rotates, the central gear couples with the rotation of multiple planetary gears 42 to drive the two feed rollers 21 to rotate slowly. The elastic feed plate 22 is flipped and fitted to the inner wall of the vertical feed channel 13 to cut the foam to divide the large foam into small pieces of foam, and the small pieces of foam are transported to the crushing roller 10 along the inclined channel. The crescent crushing blocks 101 on the two crushing rollers 10 rotating in opposite directions rub against each other and couple with the meshing groove 113 for secondary crushing. At this time, the crushed small particles of foam will rub against each other in the gap as the crushing rollers 10 rotate in opposite directions to generate static electricity The small particles of foam will accumulate and remain on the crescent crushing block 101, and as it continues to rotate, the scraper 14 will push the small particle foam into the fine material spiral channel 102 along the feed port 1021 and discharge it to the lower material end. At the same time, as the large end of the conical barrel groove 112 gradually expands, the gap between the crescent crushing block 101 and the conical barrel groove 112 gradually increases, and the fan blades 31 will rotate to suck the small particle foam generated by the two crushing rollers 10 during the crushing process to prevent the small particle foam from returning to the vertical feed channel 13, and the fan blades 31 will supply air to the air pipe 311 to output the airflow from the large end of the air pipe 311 at the conical barrel groove 112 to produce a mixed flow, thereby causing the particle foam mixed flow to offset each other and rub against each other to generate static electricity.

[0064] As an embodiment provided by the present invention, a filter plate 34 is provided on the feed plate 32 , and a scraping plate 35 is provided on the crushing roller 10 . The scraping plate 35 is driven to rotate intermittently to scrape the filter plate 34 .

[0065] Specifically, the pulverizing roller 10 is provided with a rotating protrusion 103, and the scraping plate 35 is rotatably connected to the rotating protrusion 103, and a spring 351 is provided between the two. The scraping plate 35 is attached to the filter plate 34 on the unloading plate 32, and the unloading plate 32 is provided with a stop roller 321. When the pulverizing roller 10 rotates, the scraping plate 35 will be attached to the stop roller 321 and be restricted to stop. At this time, the spring 351 accumulates force as the pulverizing roller 10 rotates. As the accumulated force of the spring 351 increases, the scraping plate 35 overcomes the stop roller 321 and performs rotational scraping. The stop roller 321 is then re-engaged to wait for power to be accumulated again to achieve intermittent scraping to remove the small particle foam accumulated on the filter plate 34. When the small particle foam accumulated on the filter plate 34 is not scraped off, the suction force and the output wind force generated by the rotation of the fan blade 31 are relatively small. When the accumulated small particle foam is scraped off, the suction force and the output wind force generated by the rotation of the fan blade 31 increase, so that the airflow output by the air pipe 311 is also sometimes small and sometimes large, thereby increasing the changing law of the mixed flow and increasing the probability of small particle foam rubbing against each other.

[0066] When the foam is crushed, the large foam is first pushed along the vertical feed channel 13 toward the feed roller 21. As the crushing roller 10 rotates, the central gear couples with multiple planetary gears 42 to rotate, so as to drive the two feed rollers 21 to rotate slowly. The elastic feed plate 22 is flipped and fitted to the inner wall of the vertical feed channel 13 to cut the foam, so as to divide the large foam into small pieces of foam, and transport the small pieces of foam along the inclined channel to the crushing roller 10. The crescent crushing blocks 101 on the two crushing rollers 10 rotating in opposite directions rub against each other and couple with the meshing groove 113 for secondary crushing. At this time, the crushed small particles of foam will rub against each other in the gap as the crushing rollers 10 rotate in opposite directions, generate static electricity, and accumulate and remain on the crescent crushing blocks 101. As it continues to rotate, the scraper 14 will push the small particle foam along the feed port 1021 into the fine material spiral channel 102 and discharge it to the lower material end. At the same time, as the large end of the cone barrel groove 112 gradually expands, the gap between the crescent crushing block 101 and the cone barrel groove 112 gradually increases, and the fan blades 31 will rotate to suck the small particle foam generated by the two crushing rollers 10 during the crushing process to prevent the small particle foam from returning to the vertical feed channel 13, and the fan blades 31 will supply air to the air pipe 311 to output the air flow from the large end of the air pipe 311 at the cone barrel groove 112 to produce a mixed flow, so as to cause the particle foam mixed flow to offset each other and rub against each other to generate static electricity, and the scraper plate 35 will rotate intermittently to remove the small particle foam accumulated on the filter plate 34.

[0067] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pulverizing system for recycling waste foam plastics, comprising a pulverizer (1) and pulverizing rollers (10) located in the pulverizer (1) and rotating in opposite directions, characterized in that: Also includes: A vertical feed channel (13) disposed on the delivery barrel (11) of the pulverizer (1); A feed assembly (2), comprising a feed roller (21) rotatably connected to the first end of the crushing roller (10), the feed roller (21) rotating slowly along with the crushing roller (10), the feed roller (21) facing the vertical feed channel (13); An air suction mechanism (3), comprising a fan blade (31) arranged at the second end of the pulverizer (1), wherein the fan blade (31) is driven to rotate and suck the conveying barrel (11); The crushing roller (10) is provided with a fine material spiral path (102), and the crushing roller (10) rotates to convey crushed foam to the conveying barrel (11) through the fine material spiral path (102); Crescent-shaped crushing blocks (101) are arranged in a linear array in an alternating manner on the two crushing rollers (10), a scraper (14) is arranged on the conveying barrel (11), a feed port (1021) is provided on the fine material spiral channel (102), and the scraper (14) scrapes material along the edge of the crescent-shaped crushing block (101) toward the feed port (1021); The crescent crushing block (101) is provided with corrugated strips (1011), and the two corrugated strips (1011) are interlaced to rub the foam; The conveying barrel (11) is symmetrically provided with stacking blocks (111), and the stacking blocks (111) are provided with conical barrel grooves (112) corresponding to the crushing rollers (10) one by one, and the conical barrel grooves (112) include a large end located at the second end of the conveying barrel (11); The fan blades (31) are driven to deliver air toward the large end to drive the finely divided foams to rub against each other; The second end of the delivery barrel (11) is provided with a blanking plate (32), and the blanking plate (32) is provided with an air delivery pipe (311) fixedly connected to the large end; The conveying barrel (11) is provided with a speed change assembly (4), the speed change assembly (4) comprising a planetary gear (42) rotatably connected to the feed roller (21) and an outer planetary gear ring (411) arranged on the inner wall of the conveying barrel (11), and the crushing roller (10) is provided with a central gear; The unloading plate (32) is provided with a filter plate (34), and the crushing roller (10) is provided with a scraping plate (35), and the scraping plate (35) is driven to rotate intermittently to scrape the filter plate (34).

2. A crushing system for recycling waste foam plastics according to claim 1, characterized in that: The conveying barrel (11) is provided with a backing block (20), and the feed roller (21) is provided with a plurality of elastic feed plates (22) in a circumferential array, and the elastic feed plates (22) are attached to the backing block (20) to feed materials to the crushing roller (10).

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