Elastomer plastic recovery method

Abstract

The invention relates to the technical field of plastic recovery, and discloses an elastomer plastic recovery method which comprises the following steps: S1, classification: classifying waste elastomer plastic, and removing impurities; s2, crushing: putting the mixture into a crusher for crushing treatment to obtain smaller particles. A transverse cutting piece and a connecting piece are arranged, a first smashing shaft rotates and drives a positioning ring to rotate at the same time, the positioning ring rotates to drive a sliding block to rotate, the sliding block vertically moves to slide on the inner wall of a positioning groove when rotating, the sliding block transversely moves to drive a positioning frame to transversely move when rotating, and the positioning frame stably slides under limitation of a limiting block and a channel; the positioning frame drives the fixing plate to move while moving, the fixing plate moves to drive the cutter to move, and therefore when the first smashing shaft rotates to conduct rotary cutting on the elastomer plastic, the rotating side of the first smashing shaft drives the positioning frame to reciprocate once, the positioning frame drives the fixing plate and the cutter to transversely move, and secondary correction cutting is conducted on the rotary-cut material.

Description

Technical Field

[0001] The invention relates to the technical field of plastic recycling, and in particular to a method for recycling elastomeric plastic. Background Art

[0002] Elastomer plastics are a type of polymer material with unique properties. They have some characteristics of both elastomers and plastics. In order to reduce the amount of landfill, reduce the harm to the ecological environment, improve resource utilization, and establish a complete elastomer plastic recycling industry chain, elastomer plastic recycling plays a vital role in protecting the environment, saving resources, and promoting economic development.

[0003] Elastomer plastics have certain elasticity and flexibility. During the crushing process, they are squeezed and cut by mechanical external forces, and the broken particles are easily squeezed and stuck together. At the same time, the friction between the materials and between the materials and the components of the crushing equipment during crushing easily generates static electricity. Most elastomer plastics are electrically insulating materials, and the static electricity generated is difficult to quickly conduct away, which will cause the broken particles to agglomerate due to static adsorption. Adhesion and agglomeration make it impossible for the crushed materials to present an ideal uniform particle state, which is not conducive to subsequent screening, transportation, and re-granulation processes. For example, during granulation, if the material is a lump of material that sticks together, it will cause the material to melt unevenly in the extruder, affecting the quality of the recycled plastic particles, resulting in quality problems such as particles of different sizes and holes inside, thereby reducing the overall quality of the recycled products. Summary of the invention

[0004] Technical issues solved In view of the above-mentioned shortcomings of the prior art, the present invention provides a method for recycling elastomeric plastics, which can effectively solve the problem of stickiness and agglomeration of elastomeric plastics in the prior art when they are crushed.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an elastomeric plastic recycling method, comprising: S1. Classification: Classify the discarded elastomer plastics and remove impurities; S2, crushing: putting it into a crusher for crushing to obtain smaller particles; S3, hot melting: put the crushed elastomer plastic particles into a heating device to melt them at high temperature; S4, extrusion and granulation: the molten elastomeric plastic is extruded into a strip shape through an extruder, and then cut into granules through a granulator; S5, cooling: cooling the granulated elastomer plastic particles to solidify them; S6. Packaging: Packing the particles for storage and transportation; The pulverizer described in S2 includes a pulverizing bin, wherein a pulverizing element for pulverizing the elastomer plastic is rotatably connected inside the pulverizing bin, wherein the pulverizing element includes a pulverizing shaft 1 rotating in the forward direction and a pulverizing shaft 2 rotating in the reverse direction, wherein the pulverizing shaft 1 and the pulverizing shaft 2 are rotatably connected via a transmission group arranged at one end of the pulverizing shaft 1, wherein a connecting element is sleeved on the outer side of the pulverizing shaft 1, wherein a cross-cutting element is arranged on the outer side of the connecting element, and when the pulverizing shaft 1 and the pulverizing shaft 2 rotate to pulverize the elastomer plastic to different degrees, the cross-cutting element performs a transverse reciprocating cutting to cut the materials adhered to each other between the pulverizing shaft 1 and the pulverizing shaft 2 again; Wherein, a screening component for sorting and guiding the input elastomer plastic is arranged above the crushing bin.

[0006] Furthermore, the transmission group includes a bevel gear 1 fixedly connected to one end of a crushing shaft 1, a bevel gear 2 meshingly connected to the outer side of the bevel gear 1, a bevel gear 3 meshingly connected to the outer side of the bevel gear 2, a middle part of a side of the bevel gear 2 close to the bevel gear 1 is fixedly connected to one end of the crushing shaft 2, and the other end of the crushing shaft 1 is fixedly connected to a motor.

[0007] Furthermore, positioning rings are sleeved on both ends of the pulverizing shaft, a sliding block is fixedly connected to the outer side of the positioning ring, and the sliding block is movably connected to the connecting piece.

[0008] Furthermore, the connecting part includes a positioning groove slidably connected to the slider, the positioning groove is embedded in the inner wall of the positioning frame, the outer side of the positioning frame is slidably connected to a limiting block, the limiting block is fixed to the side of the inner wall of the crushing bin, and the two ends of the positioning frame are slidably connected to the grooves opened on the inner wall of the crushing bin.

[0009] Furthermore, the cross-cutting piece includes a fixed plate fixedly connected to the positioning frame, a plurality of cutters are evenly arranged at one end of the fixed plate, a fixed rod is fixedly connected to the middle part of a side of the cutter away from the crushing piece, the top of the fixed rod is slidably connected to a limiting groove opened at the top of the crushing bin, a flat gear 1 is fixedly sleeved at the position of the bottom end of the fixed rod near the port, a bevel gear is rotatably connected to the bottom end of the fixed rod, the bevel gear is embedded in the limiting groove opened at the bottom end of the inner wall of the crushing bin, flat gear 2 is meshedly connected on both sides of flat gear 1, and flat gear 3 is fixedly connected to the bottom end of flat gear 2.

[0010] Furthermore, a limit groove is provided at the bottom end of the crushing bin, and a tooth plate is fixedly connected to the inner wall of the limit groove, and the tooth plate is located close to the crushing piece.

[0011] Furthermore, the screening element includes a fixing frame fixedly connected to the top of the positioning frame, the inner wall of the fixing frame is provided with a screen for damping rotation, the surface of the screen is evenly provided with screen hole one and screen hole two, the screen hole one and screen hole two are symmetrically distributed about the center line of the screen, the inner wall of the screen is provided with a slide groove, the inner wall of the slide groove is slidably connected with a sub-plate, and the upper surface of the sub-plate is evenly fixed with blocks.

[0012] Furthermore, the screening element also includes a guide frame arranged below the fixed frame, one side of the guide frame is in contact with the inner wall of the crushing bin, the guide frame is a bent plate, the guide frame is rotatably connected to the inner wall of the crushing bin through a rotating shaft passing through the bent portion, and a knob spring is sleeved on the outer side of the rotating shaft.

[0013] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a cross-cutting piece and a connecting piece. When the crushing shaft rotates, the positioning ring is driven to rotate, and the rotation of the positioning ring drives the slider to rotate. When the slider rotates, the vertical displacement slides on the inner wall of the positioning groove, and the lateral displacement when the slider rotates drives the positioning frame to move horizontally. The positioning frame slides smoothly under the restriction of the limit block and the groove. When the positioning frame moves, it drives the fixed plate to move, and the movement of the fixed plate drives the cutter to move. Therefore, when the crushing shaft rotates to perform rotary cutting on the elastomer plastic, the crushing shaft rotates on one side and drives the positioning frame to reciprocate once, and the positioning frame drives the fixed plate and the cutter to move horizontally. The cutter moves horizontally to cut the elastomer plastic accumulated and adhered between the blade gaps in another direction, avoiding the possibility that single rotary cutting may cause uneven cutting thickness due to factors such as material elasticity, tool wear or rotation speed. By adding a horizontal cutting direction, the material after rotary cutting can be subjected to secondary correction cutting to meet product specification requirements, thereby improving the dimensional accuracy of the product and greatly improving the cutting efficiency.

[0014] The present invention is provided with a cross-cutting piece, and the movement of the cutter drives the movement of the fixed rod, and the movement of the fixed rod drives the flat gear one and the bevel gear to move, and the bevel gear slides inside the limiting groove, and at this time the cutter cuts the material adhered to the gap between the matching pieces horizontally, until the bevel gear moves to the meshing position with the tooth plate, and at this time the bevel gear is limited by the meshing force of the tooth plate and rotates while moving in the limiting groove, and the rotation of the bevel gear drives the flat gear three meshing with it to rotate synchronously, and the rotation of the flat gear three drives the flat gear two to rotate, and the two flat gears two are placed at the same angle, so when one of the flat gear two is meshed with the flat gear one, the other flat gear two is not meshed with the flat gear one, and the flat gear two The rotation drives the meshing flat gear 1 to rotate, the rotation of the flat gear 1 drives the fixed rod to rotate, the rotation of the fixed rod drives the cutter to rotate under the restriction of the fixed plate, and then as the bevel gear drives the flat gear 3 to rotate, the other flat gear 2 gradually rotates to a position meshing with the flat gear 1. At this time, the other flat gear 2 rotates to drive the flat gear 1 to rotate in the opposite direction, and the flat gear 1 drives the cutter to rotate in the opposite direction through the fixed rod. Therefore, in the process of the cutter moving forward toward the crushing part in the latter half and moving backward away from the crushing part in the front half, a swinging motion occurs, so that in the process of horizontal cutting, the fragments gathered in the crushing bin are also stirred to prevent the fragments from clogging the connecting parts and the screen.

[0015] The present invention is provided with a transmission group, the rotation of the motor drives the main shaft of the crushing shaft 1 to rotate, the rotation of the crushing shaft 1 drives the bevel gear 1 to rotate, the rotation of the bevel gear 1 drives two symmetrically arranged bevel gears 2 to rotate on the inner wall of the crushing bin, the bevel gear 2 transmits the force to the bevel gear 3 stably, the bevel gear 3 rotates in the opposite direction under the force, the rotation of the bevel gear 3 drives the main shaft of the crushing shaft 2 to rotate in the opposite direction, and the blades of the crushing shaft 1 and the crushing shaft 2 rotate in the opposite direction, so as to solve the problem that when the cutting tool acts on the elastomeric plastic, the elastomeric plastic can absorb the energy during cutting due to its own elasticity and flexibility, and will first undergo elastic deformation. If the cutting energy does not exceed the fracture toughness of the material, the material will not break, but will return to its original state after the cutting tool is removed. Through the blades in two rotating directions, when the blades cut the elastomeric plastic, the elastomeric plastic will also be stretched, so that the elastomeric plastic is already straightened when the blades act on the material, thereby improving the cutting efficiency.

[0016] The present invention is provided with a fixed frame composed of a positioning frame and a cutter, so that when the cutter on one side moves toward the crushing piece, the cutter on the other side moves away from the crushing piece, and the gap size between the crushing shaft and the cutter is constantly changing dynamically, which can effectively squeeze and loosen the material in the crushing bin space, effectively avoid material blockage in the crushing process caused by unchanged space size, and can also push the material at the corner position to the cutting area, thereby improving the cutting efficiency.

[0017] The present invention is provided with a screening element. When the material is initially put in, the fixed frame is flush with the screen, and the fixed frame reciprocates with the positioning frame to vibrate and screen the put-in material. The small volume material on the left is crushed and cut by the second blade of the crushing shaft, and the material falling from the second screen hole first falls on the surface of the guide frame, and the material slides from the surface of the guide frame to the crushing area on the left side of the crushing bin. When entering the middle process of material feeding, the fixed shaft of the screen starts to rotate, and the fixed shaft rotates clockwise first, and the fixed shaft drives the screen to rotate. The large volume of elastomeric plastic retained on the surface of the screen falls from the second screen hole to the right side of the inner wall of the crushing bin under the action of gravity, and the small volume material on the right side is crushed and cut by the first blade of the crushing shaft, and the fallen material slides from the surface of the guide frame to the crushing area on the right side of the crushing bin under the guiding action of the guide frame surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a process flow of an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of a crushing bin according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure separation of the crushing bin and the screening element according to an embodiment of the present invention; Figure 4 A schematic diagram of the separation of the screening element structure according to an embodiment of the present invention; Figure 5 A schematic diagram of the connection state of the connecting member and the cross-cutting member according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the split structure inside the crushing bin of an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a crushing piece according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the cross-cutting member structure of an embodiment of the present invention; Fig. 9 Schematic diagram of the screen structure of an embodiment of the present invention.

[0020] The numbers in the figure represent: 1. crushing bin; 11. groove; 12. limit block; 13. limit groove; 14. tooth plate; 2. crushing part; 21. crushing shaft one; 22. crushing shaft two; 24. transmission group; 241. bevel gear one; 242. bevel gear two; 243. bevel gear three; 25. positioning ring; 251. slider; 26. motor; 3. cross-cutting part; 31. cutter; 32. fixed plate; 33. fixed rod; 34. flat gear one; 35. bevel gear; 36. flat gear two; 37. flat gear three; 4. connecting part; 41. positioning frame; 42. positioning groove; 5. screening part; 51. fixed frame; 52. screen; 521. slide groove; 53. screen hole one; 54. screen hole two; 55. sub-plate; 551. block; 56. guide frame; 6. screen filter. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] Example: See also Figure 1-Figure 9 The present invention provides a technical solution for an elastomeric plastic recycling method, comprising the following steps: S1. Classification: Classify the discarded elastomer plastics and remove impurities; S2, crushing: putting it into a crusher for crushing to obtain smaller particles; S3, hot melting: put the crushed elastomer plastic particles into a heating device to melt them at high temperature; S4, extrusion and granulation: the molten elastomeric plastic is extruded into a strip shape through an extruder, and then cut into granules through a granulator; S5, cooling: cooling the granulated elastomer plastic particles to solidify them; S6. Packaging: Packing the particles for storage and transportation; The pulverizer mentioned in S2 includes a pulverizing chamber 1, reference Figure 2 , the crushing bin 1 is provided with a crushing piece 2 for crushing, refer to Figure 6 and Figure 7The crushing element 2 includes a motor 26 fixedly connected to the inner wall of the crushing bin 1, an output end of the motor 26 is fixedly connected to the crushing shaft 21, and a transmission group 24 is arranged at the other end of the crushing shaft 21, and the transmission group 24 includes a bevel gear 1 241 fixedly connected to one end of the crushing shaft 21, and a bevel gear 2 242 is meshed and connected to the outer side of the bevel gear 1 241, and two bevel gears 242 are symmetrically arranged around the bevel gear 1 241, and the other sides of the two bevel gears 242 are meshed and connected to the bevel gear 3 243, and the outer side of the bevel gear 3 243 is meshed with the crushing shaft 21. The inner wall of the crushing bin 1 is rotatably connected, and the bevel gear three 243 is fixedly connected to one end of the crushing shaft two 22 near the bevel gear one 241. The crushing shaft one 21 and the crushing shaft two 22 are both composed of a main shaft and a blade. The inner side of the main shaft of the crushing shaft one 21 is rotatably connected to the main shaft of the crushing shaft two 22. The main shaft of the crushing shaft one 21 is fixedly connected to the side of the bevel gear one 241 away from the bevel gear three 243, and the diameter of the crushing shaft one 21 is larger than the diameter of the crushing shaft two 22, and the gap between the blades of the crushing shaft one 21 and the blades of the crushing shaft two 22 is equal.

[0024] After the elastomer plastic enters the inner wall of the crushing bin 1, the motor 26 rotates to drive the main shaft of the crushing shaft 1 21 to rotate, the crushing shaft 1 21 rotates to drive the bevel gear 1 241 to rotate, the bevel gear 1 241 rotates to drive two symmetrically arranged bevel gears 2 242 to rotate on the inner wall of the crushing bin 1, the bevel gear 2 242 transmits the force to the bevel gear 3 243 smoothly, the bevel gear 3 243 rotates in the opposite direction under the force, the bevel gear 3 243 rotates to drive the main shaft of the crushing shaft 2 22 to rotate in the opposite direction, and the blades of the crushing shaft 1 21 and the crushing shaft 2 22 rotate in the opposite direction, so as to solve the problem that when the cutting tool acts on the elastomer plastic, the elastomer plastic can absorb the energy during cutting due to its own elasticity and flexibility, and will first undergo elastic deformation. If the cutting energy does not exceed the fracture toughness of the material, the material will not break, but will return to its original state after the cutting tool is removed. Through the blades in two rotating directions, when the blades cut the elastomer plastic, they will also stretch the elastomer plastic, so that the elastomer plastic is already stretched straight when the blades act on the material, thereby improving the cutting efficiency.

[0025] refer to Figure 3 , Figure 5 and Figure 6, both ends are fixedly sleeved with a positioning ring 25, the outer side of the positioning ring 25 is fixedly connected with a slider 251, the slider 251 is set as an I-shaped wheel, the slider 251 is embedded in the inner side of the positioning groove 42 opened in the middle of the positioning frame 41, the positioning ring 25 rotates to drive the slider 251 to rotate, and the slider 251 slides vertically inside the positioning groove 42, the cross-cutting member 3 includes a cutter 31 located at the gap between the blades of the crushing shaft 1 21 and the crushing shaft 22, the cutter 31 is set to multiple, and the upper and lower ends of the multiple cutters 31 are provided with fixed plates 32, the width of the cutter 31 is smaller than the gap between the blades of the crushing shaft 1 21 and the crushing shaft 2 22, the side of the cutter 31 away from the crushing piece 2 is fixedly connected with a fixing rod 33, the cutter 31 rotates around the fixing rod 33 under the restriction of the fixing plate 32, the two sides of the fixing plate 32 are fixedly connected to one side of the positioning frame 41, the outside of the positioning frame 41 is slidably connected to the limit block 12 fixedly connected to the inner wall of the crushing bin 1, the upper and lower ends of the inner wall of the crushing bin 1 are both provided with grooves 11, and the grooves 11 are slidably connected to the upper and lower ends of the positioning frame 41; When the crushing shaft 21 rotates, the positioning ring 25 is driven to rotate, and the rotation of the positioning ring 25 drives the slider 251 to rotate. When the slider 251 rotates, the vertical displacement slides on the inner wall of the positioning groove 42, and the lateral displacement when the slider 251 rotates drives the positioning frame 41 to move horizontally. The positioning frame 41 slides smoothly under the restriction of the limit block 12 and the groove 11. When the positioning frame 41 moves, it drives the fixed plate 32 to move, and the movement of the fixed plate 32 drives the cutter 31 to move. Therefore, when the crushing shaft 21 rotates to perform rotary cutting on the elastomer plastic, the crushing shaft 21 rotates on one side to drive the positioning frame 41 to reciprocate once, and the positioning frame 41 drives the fixed plate 32 and the cutter 31 to move horizontally. The cutter 31 moves horizontally to cut the elastomer plastic accumulated and adhered between the blade gaps in another direction, so as to avoid the uneven cutting thickness caused by single rotary cutting due to factors such as material elasticity, tool wear or rotation speed. By adding a horizontal cutting direction, the material after rotary cutting can be corrected and cut for a second time to meet product specification requirements, improve the dimensional accuracy of the product, and greatly improve the cutting efficiency.

[0026] refer to Figure 4 , Figure 5 and Figure 8The top of the fixed rod 33 is slidably connected with the limiting groove 13 opened at the top of the crushing bin 1, and a flat gear 1 34 is fixedly sleeved at the position near the bottom end of the lower part of the fixed rod 33, and a bevel gear 35 is rotatably connected to the bottom end of the fixed rod 33. The bevel gear 35 is located inside the limiting groove 13 opened at the bottom end of the crushing bin 1, and a positioning plate is fixedly connected to the outer surface of the circumference of the fixed rod 33 at the bottom end of the bevel gear 35. A flat gear 37 is rotatably connected to the top of the positioning plate, and the flat gear 37 is meshed with the bevel gear 35. A flat gear 2 36 is fixedly connected to the top of the flat gear 37. The flat gear 2 36 is flush with the flat gear 1 34 and meshed with the outer side of the flat gear 1 34. A tooth plate 14 is fixedly connected to the inner wall of the limiting groove 13 opened at the bottom end of the crushing bin 1, and the tooth plate 14 is located at the inner wall of the limiting groove 13 near the crushing piece 2, and the size of the inner wall of the limiting groove 13 away from the crushing piece 2 is slightly larger than the size of the bevel gear 35. The movement of the cutter 31 drives the fixing rod 33 to move, and the movement of the fixing rod 33 drives the flat gear 1 34 and the bevel gear 35 to move. The bevel gear 35 slides inside the limiting groove 13. At this time, the cutter 31 cuts the material adhered to the gap between the matching sheets laterally until the bevel gear 35 moves to the meshing position with the tooth plate 14. At this time, the bevel gear 35 is limited by the meshing force of the tooth plate 14 and rotates while moving in the limiting groove 13. The rotation of the bevel gear 35 drives the flat gear 37 meshed with it to rotate synchronously. The rotation of the flat gear 37 drives the flat gear 2 36 to rotate. The two flat gears 2 36 are placed at the same angle. Therefore, when one of the flat gears 2 36 is meshed and connected with the flat gear 1 34, the other flat gear 2 36 is not meshed with the flat gear 1 34, and the flat gear 2 36 rotates. The rotation of the bevel gear 35 drives the flat gear 37 to rotate, and the other flat gear 2 36 gradually rotates to a position meshing with the flat gear 1 34. At this time, the other flat gear 2 36 rotates to drive the flat gear 1 34 to rotate in the opposite direction. The flat gear 1 34 drives the cutter 31 to rotate in the opposite direction through the fixed rod 33. Therefore, in the process of the cutter 31 moving forward toward the crushing piece 2 in the rear half and moving backward away from the crushing piece 2 in the front half, a swinging motion occurs. Therefore, in the process of horizontal cutting, the fragments gathered in the crushing bin 1 are also stirred to prevent the fragments from clogging the connecting piece 4 and the screen 6.

[0027] At the same time, the fixed frame composed of the positioning frame 41 and the cutter 31 enables the cutter 31 on one side to move toward the crushing piece 2 while the cutter 31 on the other side moves away from the crushing piece 2. The gap size between the crushing shaft 21 and the cutter 31 is constantly changing dynamically, which can effectively squeeze and loosen the material in the space of the crushing bin 1, effectively avoid material blockage during the crushing process caused by unchanged space size, and can also push the material at the corner position to the cutting area, thereby improving the cutting efficiency.

[0028] Reference 4. Figure 2 and Figure 3 The feeding port of the crushing bin 1 is provided with a screening member 5 for screening the feed, the screening member 5 includes a fixed frame 51 fixedly connected to the top of the positioning frame 41, and the positioning frame 41 will drive the fixed frame 51 to move back and forth during the reciprocating movement, so as to perform preliminary screening on the put-in materials, the screening member 5 also includes a screen 52 that rotates with the damping of the inner wall of the fixed frame 51, and the middle of both sides of the screen 52 are fixedly connected with a fixed shaft that is rotatably connected to the inner wall of the crushing bin 1, and the rotation of the fixed shaft is controlled by a PLC rotation switch, and the inside of the screen 52 is symmetrically distributed with a screen hole 1 53 and a screen hole 2 54 around its own midline, the screen hole 1 53 is arranged on the left side of the fixed shaft, the screen hole 2 54 is arranged on the right side of the fixed shaft, and the screen hole 2 55 is arranged on the right side of the fixed shaft. 4 is larger than the size of the sieve hole 1 53, a slide groove 521 is opened on the right side of the inner wall of the sieve 52, and a sub-plate 55 is slidably connected to the slide groove 521, and a damping strip is arranged on the side of the sub-plate 55. When the sieve 52 is in a horizontal state, the sub-plate 55 is completely embedded in the inner wall of the sieve 52, and a stopper 551 is fixedly connected to the upper surface of the sub-plate 55. The stopper 551 contacts the side of the sieve hole 2 54. At this time, the minimum size of the through hole formed by the stopper 551 and the sieve hole 2 54 is equal to the size of the sieve hole 1 53. A guide frame 56 is arranged below the fixed frame 51, and the guide frame 56 is arranged as a bent plate. A rotating shaft passes through the bent part of the guide frame 56, and a knob spring is sleeved on the outer side of the rotating shaft. Both ends of the rotating shaft are rotatably connected to the inner wall of the crushing bin 1.

[0029] When the material is initially put in, the fixing frame 51 is flush with the screen 52, and the fixing frame 51 reciprocates with the positioning frame 41, so as to vibrate and screen the put-in material. At this time, the size of the sieve hole 1 53 is the same as the size of the sieve hole 2 54, and the small volume of elastomeric plastic falls into the inner wall of the crushing bin 1 from the sieve hole 1 53 and the sieve hole 2 54 respectively. The material falling from the sieve hole 1 53 falls on the left side of the inner wall of the crushing bin 1, and the small volume of material on the left side is crushed and cut by the blade of the crushing shaft 2 22, and the material falling from the sieve hole 2 54 first falls on the surface of the guide frame 56, and the material slides from the surface of the guide frame 56 to the crushing area on the left side of the crushing bin 1; Then, when the material enters the middle feeding process, the fixed shaft of the screen 52 starts to rotate. The fixed shaft rotates clockwise first, and the fixed shaft drives the screen 52 to rotate. The screen 52 rotates under the restriction of the fixed frame 51 to squeeze the upper surface of the guide frame 56, so that the inclined side of the guide frame 56 fits the inner wall of the crushing bin 1. At this time, the inclined surface of the screen hole 1 53 guides to the right side of the crushing bin 1, but there is a gap between the side of the screen 52 and the surface of the guide frame 56. The slide groove 521 opened on the right side of the screen 52 is also in an inclined state at this time, and the sub-plate 55 slides along the slide groove 521 under the action of gravity. , until the sub-plate 55 is in contact with the surface of the guide frame 56, the movement of the sub-plate 55 drives the stopper 551 to move, and the movement of the stopper 551 no longer restricts the size of the second sieve hole 54. At this time, the second sieve hole 54 is in a fully opened state, and the large volume of elastic plastic retained on the upper surface of the screen 52 falls from the second sieve hole 54 to the right side of the inner wall of the crushing bin 1 under the action of gravity, and the small volume of material on the right side is crushed and cut by the blade of the crushing shaft 1 21, and the fallen material slides from the surface of the guide frame 56 under the guidance of the surface of the guide frame 56 to the crushing area on the right side of the crushing bin 1; The crushed materials fall to the lower bin space under the action of gravity, and the surface of the screen 52 returns to a horizontal state after the materials are put into the screen. At this time, some materials that do not meet the crushing standards are Fig. 9 The screen filter 6 shown in the figure intercepts and will not enter the lower hopper. After the set time, the screen filter 6 is pulled out by a staff member or a robot. As the fragments on the screen filter 6 fall on the surface of the screen 52, the fragments pass through the screen hole 1 53 and the screen hole 2 54 under the combined action of reciprocating screening and gravity and fall into the left side of the crushing bin 1, and are crushed again to improve the crushing quality of the elastomer plastic.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for recycling elastomeric plastics, characterized in that: include: S1. Classification: Classify the discarded elastomer plastics and remove impurities; S2, crushing: putting it into a crusher for crushing to obtain smaller particles; S3, hot melting: put the crushed elastomer plastic particles into a heating device to melt them at high temperature; S4, extrusion and granulation: the molten elastomeric plastic is extruded into a strip shape through an extruder, and then cut into granules through a granulator; S5, cooling: cooling the granulated elastomer plastic particles to solidify them; S6. Packaging: Packing the particles for storage and transportation; The pulverizer described in S2 comprises a pulverizing bin (1), wherein a pulverizing element (2) for pulverizing the elastomer plastic is rotatably connected inside the pulverizing bin (1), wherein the pulverizing element (2) comprises a pulverizing shaft 1 (21) rotating in the forward direction and a pulverizing shaft 2 (22) rotating in the reverse direction, wherein the pulverizing shaft 1 (21) and the pulverizing shaft 2 (22) are rotatably connected via a transmission group (24) provided at one end of the pulverizing shaft 1 (21), wherein a connecting element (4) is sleeved on the outer side of the pulverizing shaft 1 (21), wherein a cross-cutting element (3) is provided on the outer side of the connecting element (4), and when the pulverizing shaft 1 (21) and the pulverizing shaft 2 (22) rotate to pulverize the elastomer plastic to different degrees, the cross-cutting element (3) performs a transverse reciprocating cutting to cut the material adhering to the pulverizing shaft 1 (21) and the pulverizing shaft 2 (22) again; Wherein, a screening element (5) for sorting and guiding the elastomer plastic fed into the crushing bin (1) is provided above the crushing bin (1).

2. The method for recycling elastomeric plastic according to claim 1, characterized in that: The transmission group (24) comprises a bevel gear 1 (241) fixedly connected to one end of the crushing shaft 1 (21); the outer side of the bevel gear 1 (241) is meshedly connected to a bevel gear 2 (242); the outer side of the bevel gear 2 (242) is meshedly connected to a bevel gear 3 (243); the middle part of the side of the bevel gear 2 (242) close to the bevel gear 1 (241) is fixedly connected to one end of the crushing shaft 2 (22); and the other end of the crushing shaft 1 (21) is fixedly connected to a motor (26).

3. The method for recycling elastomeric plastic according to claim 1, characterized in that: Both ends of the pulverizing shaft (21) are sleeved with positioning rings (25), the outer side of the positioning ring (25) is fixedly connected with a sliding block (251), and the sliding block (251) is movably connected to the connecting piece (4).

4. The method for recycling elastomeric plastic according to claim 3, characterized in that: The connecting member (4) comprises a positioning groove (42) slidably connected to the slider (251); the positioning groove (42) is embedded in the inner wall of the positioning frame (41); the outer side of the positioning frame (41) is slidably connected to a limiting block (12); the limiting block (12) is fixed to the side of the inner wall of the crushing bin (1); and both ends of the positioning frame (41) are slidably connected to grooves (11) provided on the inner wall of the crushing bin (1).

5. The method for recycling elastomeric plastic according to claim 4, characterized in that: The cross-cutting member (3) comprises a fixing plate (32) fixedly connected to the positioning frame (41); a plurality of cutters (31) are evenly arranged at one end of the fixing plate (32); a fixing rod (33) is fixedly connected to the middle of a side of the cutter (31) away from the crushing member (2); the top end of the fixing rod (33) is slidably connected to a limiting groove (13) provided at the top end of the crushing bin (1); a flat gear 1 (34) is fixedly sleeved at a position near the port at the bottom end of the fixing rod (33); a bevel gear (35) is rotatably connected to the bottom end of the fixing rod (33); the bevel gear (35) is embedded in the limiting groove (13) provided at the bottom end of the inner wall of the crushing bin (1); both sides of the flat gear 1 (34) are meshingly connected to a flat gear 2 (36); the bottom end of the flat gear 2 (36) is fixedly connected to a flat gear 3 (37).

6. The method for recycling elastomeric plastic according to claim 1, characterized in that: The bottom end of the crushing bin (1) is provided with a limiting groove (13), the inner wall of which is fixedly connected with a tooth plate (14), and the tooth plate (14) is located close to the crushing piece (2).

7. The method for recycling elastomeric plastic according to claim 1, characterized in that: The screening element (5) comprises a fixing frame (51) fixedly connected to the top of the positioning frame (41); a screen (52) is provided on the inner wall of the fixing frame (51) for damping rotation; a first screen hole (53) and a second screen hole (54) are evenly provided on the surface of the screen (52); the first screen hole (53) and the second screen hole (54) are symmetrically distributed about the center line of the screen (52); a sliding groove (521) is provided on the inner wall of the screen (52); a sub-plate (55) is slidably connected to the inner wall of the sliding groove (521); and a stopper (551) is evenly fixed on the upper surface of the sub-plate (55).

8. The method for recycling elastomeric plastic according to claim 7, characterized in that: The screening member (5) further comprises a guide frame (56) arranged below the fixing frame (51); one side of the guide frame (56) is in contact with the inner wall of the crushing bin (1); the guide frame (56) is a bent plate; the guide frame (56) is rotatably connected to the inner wall of the crushing bin (1) via a rotating shaft passing through the bent portion; a knob spring is sleeved on the outer side of the rotating shaft.

Images