A granulation and recovery device for recycled plastic products and a granulation process

Abstract

The present invention provides a granulation and recovery device for recycled plastic products and a granulation process, which relates to the field of industrial equipment, including: a granulation base, a granulation main box, an extrusion box, a connecting inclined plate, a feed box, a discharge mesh plate, an extrusion protection mechanism and a particle discharge mechanism; the granulation main box is fixedly connected to the inside of the granulation base; the extrusion box is fixedly connected to the left end face of the granulation main box; the connecting inclined plate is fixedly connected to the left end face of the granulation main box; the feed box is fixedly connected to the left end face of the extrusion box; the discharge mesh plate is slidably connected to the inside of the granulation base; the extrusion protection mechanism is arranged inside the extrusion box; the particle discharge mechanism is arranged inside the granulation base. The extrusion protection mechanism can realize the convenient sealing of the guard plate to protect the feed inlet, and the particle discharge mechanism can realize the granulation efficiency of the device. The problem that dust is easily accumulated at the feed inlet of the granulation recovery device, and plastic products are easily combined with dust, which affects the quality of plastics is solved.

Description

Technical Field

[0001] The invention relates to the technical field of industrial equipment, and in particular to a granulation recovery device and a granulation process for recycled plastic products. Background Art

[0002] When recycled plastic products need to be reused, they need to be made into plastic pellets for use. To make plastic products into plastic pellets, a granulating and recycling device is needed. The plastic products are put into the granulating and recycling device through the feed port. The components inside the granulating and recycling device will make the plastic products into pellets, and finally the plastic pellets are collected in a storage box.

[0003] According to CN202111505708.9, the present invention discloses a plastic recycling granulation device, including a base, four symmetrically arranged support frames are fixedly connected to the upper end surface of the base, and a processing box is fixedly connected to the end of the four support frames away from the base, and a separation mesh plate is fixedly connected to the inner wall of the processing box, and the separation mesh plate is arranged close to the base, and a hydraulic cylinder is fixedly connected to the outer wall of the processing box on the side away from the base, and a hydraulic column is arranged on the hydraulic cylinder, and the end of the hydraulic column away from the hydraulic cylinder penetrates the processing box, and a rotating groove is arranged on the side wall of the hydraulic column away from the hydraulic cylinder, and a rotating block is rotatably connected in the rotating groove, and a working shaft is fixedly connected to the side wall of the rotating block close to the base, and a disc is fixedly connected to the side wall of the working shaft close to the base. The present invention can complete the plastic cutting and granulation work more conveniently, is suitable for plastic waste parts of different shapes, and greatly facilitates users.

[0004] However, the granulation recovery device generally places plastic products through the feed port structure. Since the feed port is exposed to the outside, dust and impurities are easily accumulated at the feed port. When the plastic products are placed inside the device, the plastic products are easily combined with dust and impurities, which affects the quality of the plastic. When a baffle is set at the feed port, the staff needs to open the baffle when putting the plastic products in, and then close the baffle after the putting is completed. The operation is more cumbersome. Summary of the invention

[0005] In view of this, the present invention provides a granulation and recovery device and a granulation process for recycled plastic products, which has a sealing guard plate to block the feed port of the feed box to prevent dust and impurities from accumulating inside the feed box and affecting the quality of the plastic. At the same time, it avoids the need for staff to pry the sealing guard plate, making it convenient to use the sealing guard plate to protect the feed port of the feed box.

[0006] The present invention provides a granulation and recovery device for recycled plastic products and the purpose and efficacy of the granulation process, which specifically includes: a granulation base, a granulation main box, an extrusion box body, a connecting inclined plate, a feeding box body, a supporting vertical plate, an extrusion sliding plate, a sealing guard plate, a discharging mesh plate, an extrusion protection mechanism and a particle discharging mechanism; the granulation main box is fixedly connected to the inside of the granulation base; the extrusion box body is fixedly connected to the upper side of the left end surface of the granulation main box, and a heating component is arranged inside the extrusion box body; the connecting inclined plate is fixedly connected to the lower side of the left end surface of the granulation main box, and .... The plate is fixedly connected to the lower end surface of the extrusion box; the feeding box is fixedly connected to the left end surface of the extrusion box; the supporting vertical plate is fixedly connected to the lower end surface of the feeding box; the extrusion slide plate is slidably connected to the inside of the extrusion box; the sealing guard plate rotates on the upper side of the inner end surface of the feeding box; the discharge mesh plate is slidably connected to the upper side of the inside of the granulation base, the discharge mesh plate slides on the lower end surface of the granulation main box, and a refrigeration component is arranged on the discharge mesh plate; the extrusion protection mechanism is arranged inside the extrusion box; the particle discharge mechanism is arranged inside the granulation base.

[0007] Furthermore, the extrusion protection mechanism includes: an extrusion electric cylinder and an extrusion telescopic rod; the extrusion electric cylinder is fixedly connected to the middle position of the upper end surface of the extrusion box; the extrusion telescopic rod slides inside the extrusion box, the extrusion telescopic rod is slidably connected inside the extrusion electric cylinder, and the extrusion telescopic rod is fixedly connected to the middle position of the upper end surface of the extrusion slide board.

[0008] Furthermore, the extrusion protection mechanism also includes: an extrusion pressure plate and an extrusion spring; the extrusion pressure plate is slidably connected to the inside of the lower end surface of the extrusion slide plate, and the extrusion pressure plate slides on the lower side of the extrusion slide plate; a total of multiple groups of extrusion springs are arranged, and the multiple groups of extrusion springs are respectively fixedly connected to the inside of the extrusion slide plate, and the multiple groups of extrusion springs are respectively elastically connected to the upper end surface of the extrusion pressure plate.

[0009] Furthermore, the extrusion protection mechanism also includes: an extrusion rack, an extrusion gear and a changing gear; the extrusion rack is fixedly connected to the front side of the left end face of the extrusion slide; the extrusion gear is rotatably connected to the left side inside the extrusion box, and the extrusion rack and the extrusion gear are meshed to form a gear rack transmission mechanism; the changing gear is rotatably connected to the left side inside the extrusion box, and the extrusion gear and the changing gear are meshed to form a gear transmission mechanism.

[0010] Furthermore, the extrusion protection mechanism also includes: an extrusion pulley, a sealing transmission belt and a sealing pulley; the extrusion pulley is coaxially fixedly connected to the front side of the changing gear; the sealing pulley is rotatably connected to the front side of the feed box; the sealing transmission belt is transmission-connected to the outer end faces of the extrusion pulley and the sealing pulley.

[0011] Furthermore, the extrusion protection mechanism also includes: a sealing shaft and a sealing torsion spring; the sealing shaft is rotatably connected to the right side of the feed box, the front side of the sealing shaft is coaxially fixedly connected to the sealing pulley, and the middle position of the sealing shaft is fixedly connected to the sealing guard plate; the sealing torsion spring is fixedly connected to the rear side of the feed box, and the sealing torsion spring and the sealing shaft are elastically connected.

[0012] Furthermore, the particle discharging mechanism includes: a granulation electric cylinder, a granulation telescopic rod, a granulation slide plate and a granulation cutting knife; the granulation electric cylinder is fixedly connected to the middle position of the upper end surface of the granulation main box; the granulation telescopic rod is slidably connected inside the granulation electric cylinder, and the granulation telescopic rod slides inside the granulation main box; the granulation slide plate is slidably connected inside the granulation main box, and the upper end surface of the granulation slide plate and the granulation telescopic rod are fixedly connected; the granulation cutting knife is rotatably connected inside the lower end surface of the granulation slide plate, and the granulation cutting knife rotates on the lower side of the granulation slide plate.

[0013] Furthermore, the particle discharging mechanism also includes: a discharging motor and a discharging cam; the discharging motor is fixedly connected to the right side inside the granulation base; the discharging cam is coaxially fixedly connected to the discharging motor shaft, and the discharging cam rotates on the right side inside the granulation base.

[0014] Furthermore, the particle discharging mechanism also includes: a discharging connecting plate and a discharging protrusion; the discharging connecting plate is hingedly connected to the upper side of the discharging cam; the discharging protrusion is fixedly connected to the upper side of the right end surface of the discharging mesh plate, and the right side of the discharging connecting plate is hingedly connected to the discharging protrusion.

[0015] Beneficial Effects

[0016] The present invention adopts an extrusion protection mechanism, which realizes that when the recycling device puts in the plastic products, the extrusion slide plate is located on the upper side of the extrusion box body, and the sealing guard plate is in an open state, which is convenient for the staff to put in the plastic products through the feeding box body. When the extrusion slide plate slides downward to extrude the plastic, it drives the sealing guard plate to close, and the sealing guard plate blocks the feeding port of the feeding box body to prevent the staff from putting in more plastic products while extruding the plastic. After the sealing guard plate extrude the plastic products, the sealing guard plate still blocks the feeding port of the feeding box body to prevent dust and impurities from accumulating inside the feeding box body and affecting the quality of the plastic. At the same time, it avoids the need for the staff to pry the sealing guard plate, and the sealing guard plate is used to protect the feeding port of the feeding box body.

[0017] In addition, by adopting a particle discharging mechanism, when the plastic products are made into particles, the plastic particles fall into the storage box through the discharging mesh plate. The discharging mesh plate slides back and forth, and the plastic particles quickly fall into the storage box, avoiding the problem of plastic particles accumulating on the discharging mesh plate and affecting the discharging efficiency of the plastic particles, thereby ensuring the granulation efficiency of the granulation recovery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is a schematic structural diagram of a front view of a granulation recovery device according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic structural diagram of a granulation recovery device in cross section according to an embodiment of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the feed splitting of the granulation recovery device of an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the overall structure of the material extrusion protection mechanism of an embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the disassembled material extrusion protection mechanism of an embodiment of the present invention.

[0026] Figure 6 It is a schematic structural diagram of the transmission of the extrusion protection mechanism of an embodiment of the present invention.

[0027] Figure 7 It is a schematic structural diagram of a sealing guard plate according to an embodiment of the present invention.

[0028] Figure 8 It is a schematic structural diagram of the movement of the granulating cutting knife in an embodiment of the present invention.

[0029] Fig. 9 It is a structural schematic diagram of the discharging mesh plate transmission of an embodiment of the present invention.

[0030] Reference numerals list

[0031] 1. Granulation base; 2. Granulation main box; 3. Extrusion box; 4. Connecting inclined plate; 5. Feed box; 6. Support vertical plate; 7. Extrusion electric cylinder; 701. Extrusion telescopic rod; 8. Extrusion slide plate; 801. Extrusion rack; 9. Extrusion pressure plate; 901. Extrusion spring; 10. Extrusion gear; 11. Changing gear; 1101. Extrusion pulley; 12. Sealed transmission belt; 13. Sealed rotating shaft; 1301. Sealed pulley; 1302. Sealed torsion spring; 14. Sealed guard plate; 15. Granulation electric cylinder; 1501. Granulation telescopic rod; 16. Granulation slide plate; 17. Granulation cutting knife; 18. Discharge motor; 1801. Discharge cam; 19. Discharge connecting plate; 20. Discharge mesh plate; 2001. Discharge bump. DETAILED DESCRIPTION

[0032] Example 1: Please refer to Figures 1 to 7 As shown:

[0033] The present invention provides a granulation and recovery device for recycled plastic products and a granulation process, comprising a granulation base 1, a granulation main box 2, an extrusion box body 3, a connecting inclined plate 4, a feeding box body 5, a supporting vertical plate 6, an extrusion slide plate 8, a sealing guard plate 14, a discharging mesh plate 20 and an extrusion protection mechanism; the granulation main box 2 is fixedly connected to the inside of the granulation base 1; the extrusion box body 3 is fixedly connected to the upper side of the left end surface of the granulation main box 2, and a heating component is arranged inside the extrusion box body 3; the connecting inclined plate 4 is fixedly connected to the lower side of the left end surface of the granulation main box 2, The connecting inclined plate 4 is fixedly connected to the lower end surface of the extrusion box body 3; the feeding box body 5 is fixedly connected to the left end surface of the extrusion box body 3; the supporting vertical plate 6 is fixedly connected to the lower end surface of the feeding box body 5; the extrusion slide plate 8 is slidably connected to the inside of the extrusion box body 3; the sealing guard plate 14 rotates on the upper side of the inner end surface of the feeding box body 5; the discharge mesh plate 20 is slidably connected to the upper side of the inside of the granulation base 1, and the discharge mesh plate 20 slides on the lower end surface of the granulation main box 2, and a refrigeration component is arranged on the discharge mesh plate 20; the extrusion protection mechanism is arranged inside the extrusion box body 3.

[0034] Among them, the extrusion protection mechanism includes: an extrusion electric cylinder 7 and an extrusion telescopic rod 701; the extrusion electric cylinder 7 is fixedly connected to the middle position of the upper end surface of the extrusion box 3; the extrusion telescopic rod 701 slides inside the extrusion box 3, and the extrusion telescopic rod 701 is slidably connected inside the extrusion electric cylinder 7, and the extrusion telescopic rod 701 is fixedly connected to the middle position of the upper end surface of the extrusion slide plate 8. During use, the plastic product is placed into the extrusion box 3 through the feeding box 5, and the heating component inside the extrusion box 3 heats and melts the plastic product, and the extrusion electric cylinder 7 drives the extrusion telescopic rod 701 to slide, and the sliding of the extrusion telescopic rod 701 drives the extrusion slide plate 8 to slide.

[0035] Among them, the extrusion protection mechanism also includes: an extrusion pressure plate 9 and an extrusion spring 901; the extrusion pressure plate 9 is slidably connected to the inside of the lower end surface of the extrusion slide plate 8, and the extrusion pressure plate 9 slides on the lower side of the extrusion slide plate 8; there are a total of multiple groups of extrusion springs 901, and the multiple groups of extrusion springs 901 are respectively fixedly connected to the inside of the extrusion slide plate 8, and the multiple groups of extrusion springs 901 are respectively elastically connected to the upper end surface of the extrusion pressure plate 9. During use, the extrusion slide plate 8 slides to drive the extrusion pressure plate 9 and the extrusion spring 901 to slide, and the extrusion pressure plate 9 and the extrusion spring 901 slide to extrude the heated plastic and extrude the plastic into the granulation main box 2. When the extrusion pressure plate 9 extrudes the plastic, the extrusion pressure plate 9 slides toward the inside of the extrusion slide plate 8, and the extrusion pressure plate 9 slides toward the inside of the extrusion slide plate 8 to drive the extrusion spring 901 to be compressed.

[0036] Among them, the extrusion protection mechanism also includes: an extrusion rack 801, an extrusion gear 10 and a changing gear 11; the extrusion rack 801 is fixedly connected to the front side of the left end face of the extrusion slide plate 8; the extrusion gear 10 is rotatably connected to the left side inside the extrusion box body 3, and the extrusion rack 801 and the extrusion gear 10 are meshed to form a gear rack transmission mechanism; the changing gear 11 is rotatably connected to the left side inside the extrusion box body 3, and the extrusion gear 10 and the changing gear 11 are meshed to form a gear transmission mechanism. During use, the extrusion slide plate 8 slides and drives the extrusion rack 801 to slide, and the extrusion rack 801 slides and drives the meshing extrusion gear 10 to rotate, and the rotation of the extrusion gear 10 drives the meshing changing gear 11 to rotate.

[0037] Among them, the extrusion protection mechanism also includes: an extrusion pulley 1101, a sealing transmission belt 12 and a sealing pulley 1301; the extrusion pulley 1101 is coaxially fixedly connected to the front side of the changing gear 11; the sealing pulley 1301 is rotatably connected to the front side of the inside of the feed box 5; the sealing transmission belt 12 is transmission-connected to the extrusion pulley 1101 and the outer end surface of the sealing pulley 1301. During use, the rotation of the changing gear 11 drives the extrusion pulley 1101 to rotate, the rotation of the extrusion pulley 1101 drives the sealing transmission belt 12 to transmit, and the sealing transmission belt 12 drives the sealing pulley 1301 to rotate.

[0038] Among them, the extrusion protection mechanism also includes: a sealing shaft 13 and a sealing torsion spring 1302; the sealing shaft 13 is rotatably connected to the right side of the feed box 5, the front side of the sealing shaft 13 is coaxially fixedly connected to the sealing pulley 1301, and the middle position of the sealing shaft 13 is fixedly connected to the sealing guard plate 14; the sealing torsion spring 1302 is fixedly connected to the rear side of the feed box 5, and the sealing torsion spring 1302 is elastically connected to the sealing shaft 13. During use, the rotation of the sealing pulley 1301 drives the sealing shaft 13 to rotate, and the rotation of the sealing shaft 13 drives the sealing guard plate 14 to rotate, and the rotation of the sealing guard plate 14 drives the sealing torsion spring 1302 to extend and retract, and the elastic force of the sealing torsion spring 1302 drives the sealing guard plate 14 to close.

[0039] Specific usage and function of the first embodiment: During use of the present invention, the plastic product is placed into the extrusion box 3 through the feed box 5, the heating component inside the extrusion box 3 heats and melts the plastic product, the extrusion electric cylinder 7 drives the extrusion telescopic rod 701 to slide, the extrusion telescopic rod 701 slides and drives the extrusion slide plate 8 to slide, the extrusion slide plate 8 slides and drives the extrusion pressure plate 9 and the extrusion spring 901 to slide, the extrusion pressure plate 9 and the extrusion spring 901 slide to extrude the heated plastic, and extrude the plastic into the granulation main box 2, when the extrusion pressure plate 9 extrudes the plastic, the extrusion pressure plate 9 slides toward the extrusion slide plate 8, the extrusion pressure plate 9 slides toward the extrusion slide plate 8 to compress the extrusion spring 901, and the extrusion slide plate 8 slides The movement drives the extrusion rack 801 to slide, and the sliding of the extrusion rack 801 drives the meshing extrusion gear 10 to rotate. The rotation of the extrusion gear 10 drives the meshing changing gear 11 to rotate. The rotation of the changing gear 11 drives the extrusion pulley 1101 to rotate. The rotation of the extrusion pulley 1101 drives the sealing drive belt 12 to drive. The sealing drive belt 12 drives the sealing pulley 1301 to rotate. The rotation of the sealing pulley 1301 drives the sealing shaft 13 to rotate. The rotation of the sealing shaft 13 drives the sealing guard plate 14 to rotate. The rotation of the sealing guard plate 14 drives the sealing torsion spring 1302 to expand and contract. The elastic force of the sealing torsion spring 1302 drives the sealing guard plate 14 to close, so that the sealing guard plate 14 blocks the feed port when the extrusion slide plate 8 slides to extrude the plastic.

[0040] Embodiment 2:

[0041] Based on Example 1, please refer to Figure 8 and Fig. 9 As shown:

[0042] The present invention provides a granulation and recovery device for recycled plastic products and a granulation process, which also includes a granulation discharging mechanism, which is arranged inside a granulation base 1, and includes: a granulation electric cylinder 15, a granulation telescopic rod 1501, a granulation slide plate 16 and a granulation cutting knife 17; the granulation electric cylinder 15 is fixedly connected to the middle position of the upper end surface of the granulation main box 2; the granulation telescopic rod 1501 is slidably connected to the inside of the granulation electric cylinder 15, and the granulation telescopic rod 1501 slides inside the granulation main box 2; the granulation slide plate 16 is slidably connected to the granulation electric cylinder 15. Inside the granulation main box 2, the upper end surface of the granulation slide plate 16 is fixedly connected to the granulation telescopic rod 1501; the granulation cutting knife 17 is rotatably connected to the inside of the lower end surface of the granulation slide plate 16, and the granulation cutting knife 17 rotates on the lower side of the granulation slide plate 16. During use, the granulation electric cylinder 15 drives the granulation telescopic rod 1501 to slide, and the sliding of the granulation telescopic rod 1501 drives the granulation slide plate 16 to slide, and the sliding of the granulation slide plate 16 drives the granulation cutting knife 17 to slide, and the granulation cutting knife 17 slides to the plastic, and the granulation cutting knife 17 rotates to cut the plastic into granules.

[0043] Among them, the particle discharging mechanism also includes: a discharging motor 18 and a discharging cam 1801; the discharging motor 18 is fixedly connected to the right side inside the granulation base 1; the discharging cam 1801 is coaxially fixedly connected to the rotating shaft of the discharging motor 18, and the discharging cam 1801 rotates on the right side inside the granulation base 1. During use, the rotating shaft of the discharging motor 18 rotates to drive the discharging cam 1801 to rotate.

[0044] Among them, the particle discharging mechanism also includes: a discharging connecting plate 19 and a discharging protrusion 2001; the discharging connecting plate 19 is hingedly connected to the upper side of the discharging cam 1801; the discharging protrusion 2001 is fixedly connected to the upper side of the right end surface of the discharging mesh plate 20, and the right side of the discharging connecting plate 19 is hingedly connected to the discharging protrusion 2001. During use, the discharging cam 1801 rotates to drive the discharging connecting plate 19 to slide, and the sliding of the discharging connecting plate 19 drives the discharging protrusion 2001 to slide back and forth, and the reciprocating sliding of the discharging protrusion 2001 drives the discharging mesh plate 20 to slide back and forth, and the refrigeration component of the discharging mesh plate 20 performs refrigeration molding on the plastic, and the reciprocating sliding of the discharging mesh plate 20 transfers the plastic particles to the inside of the storage box.

[0045] Specific usage and function of the second embodiment of the present invention: During use, the granulation electric cylinder 15 drives the granulation telescopic rod 1501 to slide, and the sliding of the granulation telescopic rod 1501 drives the granulation slide plate 16 to slide, and the sliding of the granulation slide plate 16 drives the granulation cutting knife 17 to slide, and the granulation cutting knife 17 slides to the plastic, and the granulation cutting knife 17 rotates to cut the plastic into granules, and the rotation shaft of the discharging motor 18 drives the discharging cam 1801 to rotate, and the rotation of the discharging cam 1801 drives the discharging connecting plate 19 to slide, and the sliding of the discharging connecting plate 19 drives the discharging protrusion 2001 to slide back and forth, and the reciprocating sliding of the discharging protrusion 2001 drives the discharging mesh plate 20 to slide back and forth, and the refrigeration component of the discharging mesh plate 20 performs refrigeration molding on the plastic, and the discharging mesh plate 20 reciprocates to transfer the plastic particles to the inside of the storage box, so as to facilitate the rapid transfer of the plastic particles to the inside of the storage box.

Claims

1. A granulation and recovery device for recycled plastic products, comprising: A granulation base (1), a granulation main box (2), an extrusion box body (3), a connecting inclined plate (4), a feed box body (5), a supporting vertical plate (6), an extrusion slide plate (8), a sealing guard plate (14), a discharge mesh plate (20), an extrusion protection mechanism and a particle discharge mechanism; the granulation main box (2) is fixedly connected to the inside of the granulation base (1); characterized in that the extrusion box body (3) is fixedly connected to the upper side of the left end surface of the granulation main box (2), and a heating component is arranged inside the extrusion box body (3); the connecting inclined plate (4) is fixedly connected to the lower side of the left end surface of the granulation main box (2), and the connecting inclined plate (4) is fixedly connected to the lower end of the extrusion box body (3). The feed box (5) is fixedly connected to the left end face of the extrusion box (3); the support vertical plate (6) is fixedly connected to the lower end face of the feed box (5); the extrusion slide plate (8) is slidably connected to the inside of the extrusion box (3); the sealing guard plate (14) rotates on the upper side of the inner end face of the feed box (5); the discharge mesh plate (20) is slidably connected to the upper side of the inside of the granulation base (1), the discharge mesh plate (20) slides on the lower end face of the granulation main box (2), and a refrigeration component is arranged on the discharge mesh plate (20); the extrusion protection mechanism is arranged inside the extrusion box (3); and the particle discharge mechanism is arranged inside the granulation base (1).

2. A granulation and recovery device for recycled plastic products as claimed in claim 1, characterized in that: The extrusion protection mechanism comprises: an extrusion electric cylinder (7) and an extrusion telescopic rod (701); the extrusion electric cylinder (7) is fixedly connected to the middle position of the upper end surface of the extrusion box (3); the extrusion telescopic rod (701) slides inside the extrusion box (3), the extrusion telescopic rod (701) is slidably connected inside the extrusion electric cylinder (7), and the extrusion telescopic rod (701) is fixedly connected to the middle position of the upper end surface of the extrusion slide plate (8).

3. A granulation and recovery device for recycled plastic products as claimed in claim 1, characterized in that: The extrusion protection mechanism also includes: an extrusion pressure plate (9) and an extrusion spring (901); the extrusion pressure plate (9) is slidably connected to the inside of the lower end surface of the extrusion slide plate (8), and the extrusion pressure plate (9) slides on the lower side of the extrusion slide plate (8); a plurality of groups of extrusion springs (901) are provided, and the plurality of groups of extrusion springs (901) are respectively fixedly connected to the inside of the extrusion slide plate (8), and the plurality of groups of extrusion springs (901) are respectively elastically connected to the upper end surface of the extrusion pressure plate (9).

4. A granulation and recovery device for recycled plastic products as claimed in claim 1, characterized in that: The extrusion protection mechanism further comprises: an extrusion rack (801), an extrusion gear (10) and a direction-changing gear (11); the extrusion rack (801) is fixedly connected to the front side of the left end face of the extrusion slide plate (8); the extrusion gear (10) is rotatably connected to the left side inside the extrusion box (3), and the extrusion rack (801) and the extrusion gear (10) are meshed to form a gear rack transmission mechanism; the direction-changing gear (11) is rotatably connected to the left side inside the extrusion box (3), and the extrusion gear (10) and the direction-changing gear (11) are meshed to form a gear transmission mechanism.

5. A granulation and recovery device for recycled plastic products as claimed in claim 4, characterized in that: The extrusion protection mechanism further comprises: an extrusion pulley (1101), a sealing transmission belt (12) and a sealing pulley (1301); the extrusion pulley (1101) is coaxially fixedly connected to the front side of the direction-changing gear (11); the sealing pulley (1301) is rotatably connected to the front side of the inside of the feed box (5); and the sealing transmission belt (12) is drivingly connected to the outer end surfaces of the extrusion pulley (1101) and the sealing pulley (1301).

6. A granulation and recovery device for recycled plastic products as claimed in claim 5, characterized in that: The extrusion protection mechanism also includes: a sealing shaft (13) and a sealing torsion spring (1302); the sealing shaft (13) is rotatably connected to the right side of the feed box (5), the front side of the sealing shaft (13) is coaxially fixedly connected to the sealing pulley (1301), and the middle position of the sealing shaft (13) is fixedly connected to the sealing guard plate (14); the sealing torsion spring (1302) is fixedly connected to the rear side of the feed box (5), and the sealing torsion spring (1302) and the sealing shaft (13) are elastically connected.

7. A granulation and recovery device for recycled plastic products as claimed in claim 1, characterized in that: The granule discharging mechanism comprises: a granulation electric cylinder (15), a granulation telescopic rod (1501), a granulation slide plate (16) and a granulation cutting knife (17); the granulation electric cylinder (15) is fixedly connected to the middle position of the upper end surface of the granulation main box (2); the granulation telescopic rod (1501) is slidably connected to the inside of the granulation electric cylinder (15), and the granulation telescopic rod (1501) slides inside the granulation main box (2); the granulation slide plate (16) is slidably connected to the inside of the granulation main box (2), and the upper end surface of the granulation slide plate (16) and the granulation telescopic rod (1501) are fixedly connected; the granulation cutting knife (17) is rotatably connected to the inside of the lower end surface of the granulation slide plate (16), and the granulation cutting knife (17) rotates on the lower side of the granulation slide plate (16).

8. A granulation and recovery device for recycled plastic products as claimed in claim 1, characterized in that: The particle discharging mechanism further comprises: a discharging motor (18) and a discharging cam (1801); the discharging motor (18) is fixedly connected to the right side inside the granulation base (1); the discharging cam (1801) is coaxially fixedly connected to the rotating shaft of the discharging motor (18), and the discharging cam (1801) rotates on the right side inside the granulation base (1).

9. A granulation and recovery device for recycled plastic products as claimed in claim 8, characterized in that: The particle discharging mechanism further comprises: a discharging connection plate (19) and a discharging protrusion (2001); the discharging connection plate (19) is hingedly connected to the upper side of the discharging cam (1801); the discharging protrusion (2001) is fixedly connected to the upper side of the right end surface of the discharging mesh plate (20), and the right side of the discharging connection plate (19) is hingedly connected to the discharging protrusion (2001).

10. The granulation process of the granulation and recycling device for recycled plastic products as claimed in claim 1, characterized in that:

1. The plastic products are placed into the extrusion box through the feeding box. The heating components inside the extrusion box heat and melt the plastic products, and the extrusion electric cylinder drives the extrusion slide to slide; 2. The sliding of the extrusion slide plate drives the extrusion pressure plate and the extrusion spring to slide. When the extrusion pressure plate extrude plastic, the extrusion pressure plate slides toward the inside of the extrusion slide plate, and the sliding of the extrusion pressure plate toward the inside of the extrusion slide plate drives the extrusion spring to be compressed; 3. The sliding of the extrusion slide drives the sealing shaft to rotate, which drives the sealing guard plate to rotate. The rotation of the sealing guard plate drives the sealing torsion spring to expand and contract. The elastic force of the sealing torsion spring also drives the sealing guard plate to rotate.

4. The granulation electric cylinder drives the granulation telescopic rod to slide, the sliding of the granulation telescopic rod drives the sliding of the granulation slide plate, the sliding of the granulation slide plate drives the sliding of the granulation cutting knife, and the granulation cutting knife rotates again; 5. The discharge motor shaft rotates to drive the discharge cam to rotate, and the discharge convex block slides back and forth to drive the discharge mesh plate to slide back and forth, and the discharge mesh plate refrigeration component cools the discharge mesh plate.

Images