A recycling and crushing device, a crushing method and a waste plastic recycling and utilization system

Abstract

The present invention relates to the technical field of recycling of plastics or waste materials containing other plastic components, and discloses a recycling and crushing device, a crushing method and a waste plastic recycling and utilization system. The waste plastics are subjected to counter-roll extrusion and crushing in a crushing box, and the crushed waste plastics fall into a circumferential cutting cylinder, and the crushed waste plastics are subjected to circumferential cutting treatment in the circumferential cutting cylinder to cut the small pieces of crushed waste plastics into smaller piece-shaped waste plastics. At the same time, the piston rod moves reciprocally, so that the piston rod is used to control the transmission of hydraulic oil, and the reciprocating transmission of hydraulic oil is used to reciprocally push out between the cutters on the counter-roll extrusion crusher in the crushing box, so that a jacking action is repeatedly formed between the cutters to jack out the waste plastics stuck between the cutters or prevent the waste plastics from being stuck between the cutters, thereby avoiding partial elastic plastics from being bent and stuck between the cutters, improving the crushing quality of the crushing device and improving the stability of the equipment operation.

Description

Technical Field

[0001] The present invention relates to the technical field of recycling of plastics or waste containing other plastic components, and specifically relates to a recycling and crushing device, a crushing method, and a waste plastic recycling system. Background Art

[0002] In existing crushing devices, such as Chinese Patent Application CN108407150A, through the cooperation of a crushing mechanism and a stirring mechanism, it is avoided that plastics of different sizes cause blockage of the feeding port during the sorting process, enabling plastics of different sizes to be recycled; by equidistantly and fixedly connecting a number of fan blades on the surface of the mounting column, placing the device at a water flow can drive the mounting column to rotate, thereby driving the second pulley and the first pulley to rotate, saving electric energy. A motor is installed on the side of the box body to ensure that the device can work properly when the water volume is small; a blower is installed on the side of the box body to blow the dust in the plastics into the interior of the ash receiving box after crushing plastics of different sizes, increasing the utilization rate of plastics and facilitating ash cleaning.

[0003] However, there are still the following problems: There are still some elastic plastics in waste plastics. When the device crushes elastic plastics, some elastic plastics are prone to bend and get stuck between two adjacent cutting blades. At the same time, the shaft of the cutting blade adjacent to the stuck elastic plastic cannot fall off automatically with the rotation, resulting in the reduction of the crushing quality of the crushing device due to the stuck elastic plastics, and it is easy to cause the device to malfunction during operation. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a recycling and crushing device, a crushing method, and a waste plastic recycling system, which have the advantages of avoiding some elastic plastics from bending and getting stuck between the cutting blades, improving the crushing quality of the crushing device, and improving the stability of the device operation, and solve the problem that there are still some elastic plastics in waste plastics. When the device crushes elastic plastics, some elastic plastics are prone to bend and get stuck between two adjacent cutting blades. At the same time, the shaft of the cutting blade adjacent to the stuck elastic plastic cannot fall off automatically with the rotation, resulting in the reduction of the crushing quality of the crushing device due to the stuck elastic plastics, and it is easy to cause the device to malfunction during operation.

[0005] To achieve the above object, the present invention provides the following technical solution: A recycling and crushing device includes a machine body, a crushing mechanism arranged on the machine body, and an auxiliary mechanism arranged on the machine body. The crushing mechanism includes a crushing box and a circumferential cutting cylinder. The crushing box is fixedly installed on the machine body, and the crushing box uses counter-roller extrusion crushing to crush waste plastics. The circumferential cutting cylinder is fixedly installed on the machine body, the circumferential cutting cylinder is located below the crushing box, and one end of the circumferential cutting cylinder is communicated with the bottom end of the crushing box. The circumferential cutting cylinder uses a threaded circumferential cutting method to circumferentially cut the crushed waste plastics.

[0006] The auxiliary mechanism includes a piston rod and a screen. The piston rod is arranged in the counter-rotating rollers for extrusion crushing in the crushing box. The piston rod reciprocates, so that the piston rod is used to control the transmission of hydraulic oil, and the reciprocating transmission of hydraulic oil is used to reciprocally push between the cutters on the counter-rotating rollers for extrusion crushing in the crushing box. The other end of the circumferential cutting cylinder is provided with the screen. The screen is located below the other end of the circumferential cutting cylinder. The screen is power-connected to the piston rod, so that the screen reciprocates to form vibration, and the waste plastics after circumferential cutting treatment falling on the screen are screened.

[0007] Preferably, the crushing mechanism further includes crushing wheels. Two crushing wheels are rotatably fitted in the crushing box. The overall crushing wheels are adapted to the cross-section inside the crushing box. The cutters on the two crushing wheels are adapted to each other. A gear set is rotatably fitted on the crushing box. The gear set includes two linkage gears. The linkage gears of the gear set are meshed with each other. The linkage gears of the gear set are respectively power-connected to each crushing wheel. A crushing motor is fixedly installed on the crushing box. The crushing motor is power-connected to one of the linkage gears of the gear set.

[0008] Preferably, a feed hopper is fixedly installed at the top of the crushing box. The feed hopper is communicated with the crushing box. The top end of the feed hopper is an open end. The feed hopper is used to introduce waste plastics.

[0009] Preferably, a cutter screw is rotatably fitted in the circumferential cutting cylinder. The cutter screw is located at the center of the circumferential cutting cylinder. One end of the shaft of the cutter screw penetrates through one end of the circumferential cutting cylinder. The cutter screw is of a spiral structure. An auxiliary circumferential cutting ring is rotatably fitted in the circumferential cutting cylinder. The auxiliary circumferential cutting ring is arranged on the inner side wall of the circumferential cutting cylinder. The auxiliary circumferential cutting ring is sleeved on the cutter screw. The auxiliary circumferential cutting ring is of an internal-thread circumferential cutting knife structure. The auxiliary circumferential cutting ring is adapted to the cutter screw. One end of the shaft of the auxiliary circumferential cutting ring penetrates through one end of the circumferential cutting cylinder. One end of the shaft of the auxiliary circumferential cutting ring is sleeved on one end of the shaft of the cutter screw. A bearing is arranged between one end of the shaft of the cutter screw and one end of the shaft of the auxiliary circumferential cutting ring. The inner ring of the bearing is connected to the shaft of the cutter screw, and the outer ring of the bearing is connected to the shaft of the auxiliary circumferential cutting ring.

[0010] Preferably, a first gear is fixedly installed on the shaft at one end of the auxiliary cutting ring, and a second gear is fixedly installed on the shaft at one end of the cutter screw. Both the first gear and the second gear are located outside the cutting ring cylinder. The first gear and the second gear are of the same size. A cutting ring motor is fixedly installed on the machine body, and a power gear is fixedly installed on the shaft of the cutting ring motor. The power gear is located between the first gear and the second gear, and the power gear meshes with the first gear and the power gear meshes with the second gear.

[0011] Preferably, a feeding hopper is fixedly installed on the machine body. The feeding hopper penetrates the machine body. The top end of the feeding hopper is communicated with the bottom end of the crushing box, and the bottom end of the feeding hopper is communicated with one end of the cutting ring cylinder. No cutter is provided on the part of the auxiliary cutting ring adjacent to the connection between the feeding hopper and the cutting ring cylinder. An outlet hopper is fixedly installed at the other end of the cutting ring cylinder. The outlet hopper is communicated with the other end of the cutting ring cylinder, and the bottom end of the outlet hopper is an open end.

[0012] Preferably, the auxiliary mechanism further includes a hydraulic oil cylinder. The hydraulic oil cylinder is fixedly installed in the crushing wheel. One end of the hydraulic oil cylinder penetrates one end of the crushing wheel, and the hydraulic oil cylinder penetrates the side wall of the crushing box. The hydraulic oil cylinder is rotatably connected with the crushing box. A plurality of telescopic ejector rods are fixedly installed on the hydraulic oil cylinder. The telescopic ejector rods are all opposite to the cutters on the crushing wheel with a gap. The telescopic ejector rods are all communicated with the hydraulic oil cylinder. The extending rods of the telescopic ejector rods all penetrate the wall surface of the crushing wheel. The piston rods are all movably arranged in the hydraulic oil cylinder. One end of the piston rod penetrates one end of the hydraulic oil cylinder, and the penetration part of the piston rod and the hydraulic oil cylinder is sealed. The hydraulic oil cylinder is filled with hydraulic oil.

[0013] Preferably, a wheel disc is rotatably arranged on the machine body. One end of the wheel disc is rotatably matched with a first linkage rod. One of the piston rods is rotatably matched with the first linkage rod, and the other piston rod is slidably matched with the first linkage rod. The sliding track between the other piston rod and the first linkage rod is an arc track. A servo motor is fixedly installed on the machine body, and a chain is tensioned between the shaft of the servo motor and the wheel disc.

[0014] Preferably, a track frame is fixedly arranged beside the machine body. The track frame is located directly below the outlet hopper. A screen is arranged on the track frame. One end of the screen is slidably matched with the track frame, and a second linkage rod is arranged between the other end of the screen and the other end of the wheel disc. One end of the second linkage rod is rotatably matched with the wheel disc, and the other end of the second linkage rod is rotatably matched with the other end of the screen.

[0015] A crushing method using the above-mentioned recycling and crushing equipment.

[0016] A waste plastic recycling system using the above-mentioned crushing method.

[0017] Compared with the prior art, the present invention provides a recycling and crushing equipment, which has the following beneficial effects:

[0018] 1. When the recycling and crushing equipment crushes waste plastics, the waste plastics are first put into the crushing box, and the waste plastics are crushed by counter-roller extrusion in the crushing box. The crushed waste plastics fall into the circumferential cutting cylinder, and the crushed waste plastics are circumferentially cut in the circumferential cutting cylinder to cut the small pieces of crushed waste plastics into smaller piece-shaped waste plastics. At the same time, the piston rod moves reciprocally, so that the piston rod is used to control the transmission of hydraulic oil, and the reciprocating transmission of hydraulic oil is used to reciprocally push out between the cutters on the counter-roller for counter-roller extrusion crushing in the crushing box, so that a jacking action is repeatedly formed between the cutters to jack out the waste plastics stuck between the cutters or prevent the waste plastics from being stuck between the cutters, and the screen is synchronously driven to move reciprocally to make the screen vibrate, so as to screen the circumferentially cut waste plastics falling on the screen, thereby classifying the circumferentially cut waste plastics discharged from the circumferential cutting cylinder, re-collecting the larger waste plastics that are not completely processed and re-crushing them, thus avoiding partial elastic plastics from being bent and stuck between the cutters, improving the crushing quality of the crushing equipment, and improving the stability of the equipment operation.

[0019] 2. The recycling and crushing equipment, through the setting of the hydraulic oil cylinder and the piston rod, uses the hydraulic oil transmission to reciprocally jack between the cutters on the crushing wheel, avoiding the cumbersome of setting another power source, reducing the use cost of the equipment, and further improving the stability of the equipment operation.

[0020] 3. The recycling and crushing equipment, through the setting of the wheel disc, automatically discharges the waste plastics stuck between the cutters while synchronously screening the circumferentially cut waste plastics, increasing the functions of the equipment while improving the stability of the equipment operation, and improving the processing efficiency of the crushing equipment and the applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structural distribution at the body of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the crushing mechanism of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the crushing box of the present invention;

[0024] Figure 4Schematic diagram of the internal structure distribution of the circumferential cutting cylinder of the present invention;

[0025] Figure 5 Schematic diagram of the structure distribution at the power gear of the present invention;

[0026] Figure 6 Schematic diagram of the auxiliary mechanism of the present invention;

[0027] Figure 7 Schematic diagram of the structure distribution at the first linkage rod of the present invention;

[0028] Figure 8 is Figure 7 Enlarged structure schematic diagram at position A in

[0029] Figure 9 Schematic diagram of the structure distribution at the second linkage rod of the present invention;

[0030] Figure 10 Schematic diagram of the overall structure of the crushing equipment of the present invention.

[0031] In the figure: 1, machine body; 2, crushing mechanism; 21, crushing box; 22, crushing wheel; 23, gear set; 24, crushing motor; 25, feed hopper; 26, circumferential cutting cylinder; 27, cutting screw; 28, auxiliary cutting ring; 29, bearing; 210, first gear; 211, second gear; 212, circumferential cutting motor; 213, power gear; 214, material passing hopper; 215, discharge hopper; 3, auxiliary mechanism; 31, hydraulic oil cylinder; 32, telescopic ejector rod; 33, piston rod; 34, wheel disc; 35, first linkage rod; 36, servo motor; 37, chain; 38, rail frame; 39, screen; 310, second linkage rod. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a recycling crushing equipment, a crushing method and a waste plastic recycling and utilization system.

[0034] In a typical implementation manner of the present application, as Figures 1-10As shown in the figure, a recycling and crushing device includes a machine body 1, a crushing mechanism 2 arranged on the machine body 1, and an auxiliary mechanism 3 arranged on the machine body 1. The crushing mechanism 2 includes a crushing box 21 and a circumferential cutting cylinder 26. The crushing box 21 is fixedly installed on the machine body 1, and the crushing box 21 uses a pair of rollers to squeeze and crush to crush waste plastics. The circumferential cutting cylinder 26 is fixedly installed on the machine body 1, and the circumferential cutting cylinder 26 is located below the crushing box 21. One end of the circumferential cutting cylinder 26 is communicated with the bottom end of the crushing box 21, and the circumferential cutting cylinder 26 uses a thread circumferential cutting method to circumferentially cut the crushed waste plastics.

[0035] The auxiliary mechanism 3 includes a piston rod 33 and a screen 39. The piston rod 33 is arranged in the pair of rollers of the pair-roller extrusion crushing in the crushing box 21. The piston rod 33 reciprocates, so that the piston rod 33 is used to control the transmission of hydraulic oil, and the reciprocating transmission of hydraulic oil is used to reciprocally push out between the cutting knives on the pair-roller extrusion crushing pair-roller in the crushing box 21. A screen 39 is arranged at the other end of the circumferential cutting cylinder 26. The screen 39 is located below the other end of the circumferential cutting cylinder 26. The screen 39 is power-connected to the piston rod 33 to make the screen 39 reciprocate to form a jitter, so as to screen the circumferentially cut waste plastics falling on the screen 39.

[0036] When using the present invention:

[0037] When starting the crushing device to crush waste plastics, first put the waste plastics into the crushing box 21, and perform pair-roller extrusion crushing on the waste plastics in the crushing box 21. The crushed waste plastics fall into the circumferential cutting cylinder 26, and the crushed waste plastics are circumferentially cut in the circumferential cutting cylinder 26 to cut the small pieces of crushed waste plastics into smaller piece-shaped waste plastics. At the same time, the piston rod 33 reciprocates, so that the piston rod 33 is used to control the transmission of hydraulic oil, and the reciprocating transmission of hydraulic oil is used to reciprocally push out between the cutting knives on the pair-roller extrusion crushing pair-roller in the crushing box 21, so that a jacking action is repeatedly formed between the cutting knives to jack out the waste plastics stuck between the cutting knives, or prevent the waste plastics from being stuck between the cutting knives, and synchronously drive the screen 39 to reciprocate to make the screen 39 form a jitter, so as to screen the circumferentially cut waste plastics falling on the screen 39, thereby classifying the circumferentially cut waste plastics discharged from the circumferential cutting cylinder 26, collecting the larger waste plastics that have not been completely processed and re-performing crushing treatment, thereby avoiding partial elastic plastics from being bent and stuck between the cutting knives, improving the crushing quality of the crushing device, and improving the stability of the equipment operation.

[0038] Further, the crushing mechanism 2 further includes crushing wheels 22. Two crushing wheels 22 are rotatably fitted in the crushing box 21. The overall crushing wheels 22 are adapted to the cross-section inside the crushing box 21. The cutters on the two crushing wheels 22 are adapted to each other. A gear set 23 is rotatably fitted on the crushing box 21. The gear set 23 includes two linkage gears. The linkage gears of the gear set 23 are meshed with each other. The linkage gears of the gear set 23 are respectively power-connected to the respective crushing wheels 22. A crushing motor 24 is fixedly installed on the crushing box 21. The crushing motor 24 is power-connected to one of the linkage gears of the gear set 23.

[0039] Further, a feed hopper 25 is fixedly installed at the top of the crushing box 21. The feed hopper 25 is communicated with the crushing box 21. The top end of the feed hopper 25 is an open end. The feed hopper 25 is used for introducing waste plastics.

[0040] Among them, when the crushing motor 24 is started, the crushing motor 24 drives the gear set 23 to rotate, so that the two linkage gears of the gear set 23 rotate towards each other. The gear set 23 drives the crushing wheels 22 to rotate towards each other in the crushing box 21, so that the crushing wheels 22 perform crushing treatment on the waste plastics.

[0041] Further, a cutter screw 27 is rotatably fitted in the circumferential cutting cylinder 26. The cutter screw 27 is located at the center of the circumferential cutting cylinder 26. One end of the cutter screw 27 axially penetrates through one end of the circumferential cutting cylinder 26. The cutter screw 27 is a spiral structure. An auxiliary cutting ring 28 is rotatably fitted in the circumferential cutting cylinder 26. The auxiliary cutting ring 28 is arranged on the inner side wall of the circumferential cutting cylinder 26. The auxiliary cutting ring 28 is sleeved on the cutter screw 27. The auxiliary cutting ring 28 is an internal thread circumferential cutting knife structure. The auxiliary cutting ring 28 is adapted to the cutter screw 27. One end of the auxiliary cutting ring 28 axially penetrates through one end of the circumferential cutting cylinder 26. One end of the shaft of the auxiliary cutting ring 28 is sleeved on one end of the shaft of the cutter screw 27. A bearing 29 is arranged between one end of the shaft of the cutter screw 27 and one end of the shaft of the auxiliary cutting ring 28. The inner ring of the bearing 29 is connected to the shaft of the cutter screw 27, and the outer ring of the bearing 29 is connected to the shaft of the auxiliary cutting ring 28.

[0042] Further, a first gear 210 is fixedly installed on one end of the shaft of the auxiliary cutting ring 28. A second gear 211 is fixedly installed on one end of the shaft of the cutter screw 27. The first gear 210 and the second gear 211 are both located outside the circumferential cutting cylinder 26. The first gear 210 and the second gear 211 have the same size. A circumferential cutting motor 212 is fixedly installed on the machine body 1. A power gear 213 is fixedly installed on the shaft of the circumferential cutting motor 212. The power gear 213 is located between the first gear 210 and the second gear 211. The power gear 213 is meshed with the first gear 210, and the power gear 213 is meshed with the second gear 211.

[0043] Among them, the circumferential cutting motor 212 is started, and the circumferential cutting motor 212 drives the power gear 213 to rotate. The power gear 213 drives the first gear 210 and the second gear 211 to rotate. The first gear 210 drives the cutter screw 27 to rotate, and the second gear 211 drives the auxiliary cutting ring 28 to rotate, so that the waste plastic after crushing treatment is subjected to circumferential cutting between the cutter screw 27 and the auxiliary cutting ring 28. At the same time, with the rotation of the auxiliary cutting ring 28, the auxiliary cutting ring 28 drives the waste plastic in the circumferential cutting cylinder 26 to move.

[0044] Furthermore, a material passing hopper 214 is fixedly installed on the machine body 1. The material passing hopper 214 penetrates the machine body 1. The top end of the material passing hopper 214 is communicated with the bottom end of the crushing box 21, and the bottom end of the material passing hopper 214 is communicated with one end of the circumferential cutting cylinder 26. The part of the auxiliary cutting ring 28 adjacent to the connection between the material passing hopper 214 and the circumferential cutting cylinder 26 is not provided with a cutter. The other end of the circumferential cutting cylinder 26 is fixedly installed with a discharge hopper 215. The discharge hopper 215 is communicated with the other end of the circumferential cutting cylinder 26, and the bottom end of the discharge hopper 215 is an open end.

[0045] Among them, the waste plastic after crushing treatment enters the circumferential cutting cylinder 26 through the material passing hopper 214, and the waste plastic after circumferential cutting is discharged through the discharge hopper 215.

[0046] Furthermore, the auxiliary mechanism 3 further includes a hydraulic oil cylinder 31. The hydraulic oil cylinder 31 is fixedly installed in each of the crushing wheels 22. One end of the hydraulic oil cylinder 31 penetrates one end of the crushing wheel 22. The hydraulic oil cylinder 31 penetrates the side wall of the crushing box 21. The hydraulic oil cylinder 31 is rotatably connected with the crushing box 21. A plurality of telescopic ejector rods 32 are fixedly installed on the hydraulic oil cylinder 31. The telescopic ejector rods 32 are all opposite to the cutters on the crushing wheels 22 at a gap. The telescopic ejector rods 32 are all communicated with the hydraulic oil cylinder 31. The extension rods of the telescopic ejector rods 32 all penetrate the wall surface of the crushing wheel 22. The piston rods 33 are all movably arranged in the hydraulic oil cylinder 31. One end of the piston rod 33 penetrates one end of the hydraulic oil cylinder 31. The penetration part of the piston rod 33 and the hydraulic oil cylinder 31 is sealed, and the hydraulic oil cylinder 31 is filled with hydraulic oil.

[0047] Furthermore, a wheel disc 34 is rotatably arranged on the machine body 1. One end of the wheel disc 34 is rotatably fitted with a first linkage rod 35. One of the piston rods 33 is rotatably fitted with the first linkage rod 35, and the other piston rod 33 is slidably fitted with the first linkage rod 35. The sliding fit track between the other piston rod 33 and the first linkage rod 35 is an arc track. A servo motor 36 is fixedly installed on the machine body 1, and a chain 37 is tensioned between the shaft of the servo motor 36 and the wheel disc 34.

[0048] Among them, start the servo motor 36. The servo motor 36 drives the chain 37 to rotate. The chain 37 drives the disc 34 to rotate. The disc 34 drives the first linkage rod 35 to rotate. The first linkage rod 35 drives the piston rod 33 to reciprocate in the hydraulic oil cylinder 31, so that the piston rod 33 pushes the hydraulic oil in the hydraulic oil cylinder 31. The hydraulic oil pushes the extension rod of the telescopic ejector rod 32 to move, so that the extension rod of the telescopic ejector rod 32 reciprocally extends and retracts on the crushing wheel 22 (on the surface between the cutter blades), thereby reciprocally pushing against the cutter blades on the crushing wheel 22 to push out the waste plastics stuck between the cutter blades and prevent the waste plastics from getting stuck between the cutter blades.

[0049] Furthermore, a track frame 38 is fixedly arranged beside the machine body 1. The track frame 38 is located directly below the discharge hopper 215. A screen 39 is arranged on the track frame 38. One end of the screen 39 is slidably matched with the track frame 38. A second linkage rod 310 is arranged between the other end of the screen 39 and the other end of the disc 34. One end of the second linkage rod 310 is rotationally matched with the disc 34, and the other end of the second linkage rod 310 is rotationally matched with the other end of the screen 39.

[0050] Among them, when the disc 34 rotates, it drives the second linkage rod 310 to rotate. The second linkage rod 310 drives the screen 39 to move, so that the screen 39 reciprocates on the track frame 38, thereby causing the screen 39 to vibrate to screen the waste plastics after the circumferential cutting treatment.

[0051] Working principle:

[0052] When starting the crushing equipment to crush the waste plastics, first put the waste plastics into the crushing box 21. The waste plastics are subjected to counter-roller extrusion crushing in the crushing box 21. The crushed waste plastics fall into the circumferential cutting cylinder 26. The crushed waste plastics are subjected to circumferential cutting treatment in the circumferential cutting cylinder 26 to cut the small pieces of waste plastics after the crushing treatment into smaller piece-shaped waste plastics. At the same time, the piston rod 33 reciprocates, so that the piston rod 33 is used to control the hydraulic oil transmission, so as to use the reciprocating transmission of the hydraulic oil to reciprocally push out between the cutter blades on the counter-roller for extrusion crushing in the crushing box 21, so that a jacking action is repeatedly formed between the cutter blades to push out the waste plastics stuck between the cutter blades or prevent the waste plastics from getting stuck between the cutter blades, and synchronously drive the screen 39 to reciprocate, so that the screen 39 vibrates to screen the waste plastics after the circumferential cutting treatment falling on the screen 39, thereby classifying the waste plastics after the circumferential cutting treatment discharged from the circumferential cutting cylinder 26, re-collecting the larger waste plastics that have not been completely processed and re-crushing them, thereby avoiding partial elastic plastics from bending and getting stuck between the cutter blades, improving the crushing quality of the crushing equipment and the stability of the equipment operation;

[0053] Among them, start the crushing motor 24, the crushing motor 24 drives the gear set 23 to rotate, causing the two linkage gears of the gear set 23 to rotate towards each other, and the gear set 23 drives the crushing wheels 22 to rotate towards each other in the crushing box 21, so that the crushing wheels 22 crush the waste plastics;

[0054] Then, start the circumferential cutting motor 212, the circumferential cutting motor 212 drives the power gear 213 to rotate, the power gear 213 drives the first gear 210 and the second gear 211 to rotate, the first gear 210 drives the cutting screw 27 to rotate, and the second gear 211 drives the auxiliary cutting ring 28 to rotate, so that the waste plastics after crushing are subjected to circumferential cutting between the cutting screw 27 and the auxiliary cutting ring 28. At the same time, as the auxiliary cutting ring 28 rotates, the auxiliary cutting ring 28 drives the waste plastics in the circumferential cutting cylinder 26 to move. The waste plastics after crushing enter the circumferential cutting cylinder 26 through the feeding hopper 214, and the waste plastics after circumferential cutting are discharged through the discharging hopper 215;

[0055] Moreover, start the servo motor 36, the servo motor 36 drives the chain 37 to rotate, the chain 37 drives the wheel disc 34 to rotate, the wheel disc 34 drives the first linkage rod 35 to rotate, the first linkage rod 35 drives the piston rod 33 to reciprocate in the hydraulic oil cylinder 31, so that the piston rod 33 pushes the hydraulic oil in the hydraulic oil cylinder 31, and the hydraulic oil pushes the extending rod of the telescopic ejector rod 32 to move, so that the extending rod of the telescopic ejector rod 32 reciprocates and extends and retracts on the crushing wheel 22 (on the surface between the cutting blades), thereby reciprocatingly pushing on the cutting blades on the crushing wheel 22 to push out the waste plastics stuck between the cutting blades and prevent the waste plastics from being stuck between the cutting blades; while the wheel disc 34 rotates, it drives the second linkage rod 310 to rotate, and the second linkage rod 310 drives the screen 39 to move, so that the screen 39 reciprocates on the track frame 38, so that the screen 39 vibrates to screen the waste plastics after circumferential cutting.

[0056] A crushing method uses the above-mentioned recycling and crushing equipment.

[0057] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A recycling and crushing device, comprising a machine body (1), a crushing mechanism (2) arranged on the machine body (1), and an auxiliary mechanism (3) arranged on the machine body (1), characterized in that: The crushing mechanism (2) includes a crushing box (21) and a circumferential cutting cylinder (26). The crushing box (21) is fixedly installed on the machine body (1). The crushing box (21) uses double-roller extrusion crushing to crush waste plastics. The circumferential cutting cylinder (26) is fixedly installed on the machine body (1). The circumferential cutting cylinder (26) is located below the crushing box (21). One end of the circumferential cutting cylinder (26) is communicated with the bottom end of the crushing box (21). The circumferential cutting cylinder (26) uses a thread circumferential cutting method to circumferentially cut the crushed waste plastics. The auxiliary mechanism (3) includes a piston rod (33) and a screen (39). The piston rod (33) is arranged in the double rollers of the double-roller extrusion crushing in the crushing box (21). The piston rod (33) reciprocates, so that the piston rod (33) is used to control the transmission of hydraulic oil, and the reciprocating transmission of hydraulic oil is used to reciprocally push out between the cutting knives on the double rollers of the double-roller extrusion crushing in the crushing box (21). The screen (39) is arranged at the other end of the circumferential cutting cylinder (26). The screen (39) is located below the other end of the circumferential cutting cylinder (26). The screen (39) is power-connected to the piston rod (33), so that the screen (39) reciprocates to form a vibration, so as to screen the circumferentially cut waste plastics falling on the screen (39). The crushing mechanism (2) further includes a crushing wheel (22). Two crushing wheels (22) are rotatably fitted in the crushing box (21). The overall crushing wheels (22) are adapted to the cross-section inside the crushing box (21). The cutting knives on the two crushing wheels (22) are adapted to each other. A gear set (23) is rotatably fitted on the crushing box (21). The gear set (23) includes two linkage gears. The linkage gears of the gear set (23) are meshed with each other. The linkage gears of the gear set (23) are respectively power-connected to each crushing wheel (22). A crushing motor (24) is fixedly installed on the crushing box (21). The crushing motor (24) is power-connected to one linkage gear of the gear set (23). A cutting knife screw rod (27) is rotatably fitted inside the circumferential cutting cylinder (26). The cutting knife screw rod (27) is located at the center of the circumferential cutting cylinder (26). One end of the shaft of the cutting knife screw rod (27) penetrates through one end of the circumferential cutting cylinder (26). The cutting knife screw rod (27) is of a spiral structure. An auxiliary cutting ring (28) is rotatably fitted inside the circumferential cutting cylinder (26). The auxiliary cutting ring (28) is arranged on the inner side wall of the circumferential cutting cylinder (26). The auxiliary cutting ring (28) is sleeved on the cutting knife screw rod (27). The auxiliary cutting ring (28) is of an internal thread circumferential cutting knife structure and is adapted to the cutting knife screw rod (27). One end of the shaft of the auxiliary cutting ring (28) penetrates through one end of the circumferential cutting cylinder (26). One end of the shaft of the auxiliary cutting ring (28) is sleeved on one end of the shaft of the cutting knife screw rod (27). A bearing (29) is arranged between one end of the shaft of the cutting knife screw rod (27) and one end of the shaft of the auxiliary cutting ring (28). The inner ring of the bearing (29) is connected to the shaft of the cutting knife screw rod (27), and the outer ring of the bearing (29) is connected to the shaft of the auxiliary cutting ring (28). A first gear (210) is fixedly installed on one end of the shaft of the auxiliary cutting ring (28). A second gear (211) is fixedly installed on one end of the shaft of the cutting knife screw rod (27). The first gear (210) and the second gear (211) are both located outside the circumferential cutting cylinder (26). The first gear (210) and the second gear (211) are of the same size. A circumferential cutting motor (212) is fixedly installed on the machine body (1). A power gear (213) is fixedly installed on the shaft of the circumferential cutting motor (212). The power gear (213) is located between the first gear (210) and the second gear (211). The power gear (213) meshes with the first gear (210), and the power gear (213) meshes with the second gear (211). A material passing hopper (214) is fixedly installed on the machine body (1). The material passing hopper (214) penetrates through the machine body (1). The top end of the material passing hopper (214) is communicated with the bottom end of the crushing box (21). The bottom end of the material passing hopper (214) is communicated with one end of the circumferential cutting cylinder (26). No cutting knife is arranged on the part of the auxiliary cutting ring (28) adjacent to the connection between the material passing hopper (214) and the circumferential cutting cylinder (26). An outlet hopper (215) is fixedly installed at the other end of the circumferential cutting cylinder (26). The outlet hopper (215) is communicated with the other end of the circumferential cutting cylinder (26). The bottom end of the outlet hopper (215) is an open end. A turntable (34) is rotatably arranged on the machine body (1). One end of the turntable (34) is rotatably fitted with a first linkage rod (35). One side of the piston rod (33) is rotatably fitted with the first linkage rod (35), and the other side of the piston rod (33) is slidably fitted with the first linkage rod (35). The sliding fit track between the piston rod (33) on the other side and the first linkage rod (35) is an arc track. A servo motor (36) is fixedly installed on the machine body (1), and a chain (37) is tensioned between the shaft of the servo motor (36) and the turntable (34). A track frame (38) is fixedly arranged beside the machine body (1). The track frame (38) is located directly below the discharge hopper (215). A screen (39) is arranged on the track frame (38). One end of the screen (39) is slidably fitted with the track frame (38), and a second linkage rod (310) is arranged between the other end of the screen (39) and the other end of the turntable (34). One end of the second linkage rod (310) is rotatably fitted with the turntable (34), and the other end of the second linkage rod (310) is rotatably fitted with the other end of the screen (39).

2. A recycling and crushing device according to claim 1, characterized in that: A feed hopper (25) is fixedly installed at the top of the crushing box (21). The feed hopper (25) is communicated with the crushing box (21). The top end of the feed hopper (25) is an open end, and the feed hopper (25) is used for introducing waste plastics.

3. A recycling and crushing device according to claim 1, characterized in that: The auxiliary mechanism (3) further includes a hydraulic oil cylinder (31). The hydraulic oil cylinder (31) is fixedly installed in each of the crushing wheels (22). One end of the hydraulic oil cylinder (31) penetrates through one end of the crushing wheel (22). The hydraulic oil cylinder (31) penetrates through the side wall of the crushing box (21). The hydraulic oil cylinder (31) is rotatably connected to the crushing box (21). A plurality of telescopic ejector rods (32) are fixedly installed on the hydraulic oil cylinder (31). The telescopic ejector rods (32) are all opposite to the cutting knives on the crushing wheels (22) with a gap. The telescopic ejector rods (32) are all communicated with the hydraulic oil cylinder (31). The extending rods of the telescopic ejector rods (32) all penetrate through the wall surface of the crushing wheel (22). The piston rods (33) are all movably arranged in the hydraulic oil cylinder (31). One end of the piston rod (33) penetrates through one end of the hydraulic oil cylinder (31). The penetration of the piston rod (33) and the hydraulic oil cylinder (31) is sealed, and the hydraulic oil cylinder (31) is filled with hydraulic oil.

4. A crushing method, characterized in that, The recycling and crushing device according to any one of claims 1-3 is used.

5. A waste plastic recycling system, characterized in that, The crushing method according to claim 4 is used.

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