CN113580424A

CN113580424A - Crushing and recycling device for plastic regeneration and crushing method thereof

Info

Publication number: CN113580424A
Application number: CN202110849033.3A
Authority: CN
Inventors: 娄丹
Original assignee: Individual
Current assignee: Henan Jiajing Renewable Resources Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-11-02
Anticipated expiration: 2041-07-27
Also published as: CN113580424B

Abstract

The invention belongs to the technical field of plastic regeneration, and particularly relates to a crushing and recycling device for plastic regeneration and a crushing method thereof. The semiconductor refrigerator is matched with the copper ring plate to refrigerate the grid cutter disc and the fixed end bucket, and refrigerate the plastic, so that the hardness of the plastic is improved, the toughness of the plastic is reduced, and the plastic crushing effect is improved.

Description

Crushing and recycling device for plastic regeneration and crushing method thereof

Technical Field

The invention relates to the technical field of plastic regeneration, in particular to a crushing and recycling device for plastic regeneration and a crushing method thereof.

Background

Plastics are high molecular compounds obtained by polymerization of monomers by addition polymerization or polycondensation, which have a moderate deformation resistance between fibers and rubber, and are composed of synthetic resin, fillers, plasticizers, stabilizers, lubricants, colorants, and other additives. Plastics are important organic synthetic polymer materials and are widely applied. However, "white pollution" caused by waste plastics is more and more serious, if people can understand the composition and classification of plastics in detail, the method can help people to scientifically use plastic products, is also beneficial to the classification and recovery of the plastics, and effectively controls and reduces the "white pollution", and the regenerated plastics refer to plastic raw materials which are obtained by processing the waste plastics by physical or chemical methods such as pretreatment, melting granulation, modification and the like, and are used for recycling the plastics.

In the recycling process of plastics, the plastics need to be crushed and refined, but some plastics have high toughness, and when the plastics are actually crushed by a simple crushing mechanism, the crushing effect is common, so that certain limitation exists.

In view of the above, the present invention provides a crushing and recycling device for recycling plastic and a crushing method thereof, so as to solve the technical problems in the prior art.

Disclosure of Invention

The invention provides a crushing and recycling device for plastic regeneration and a crushing method thereof, based on the fact that the toughness of partial plastic is high, and the crushing effect is a common technical problem when the plastic is actually crushed by a simple crushing mechanism.

The invention provides a crushing and recycling device for plastic regeneration and a crushing method thereof, which comprise a rotary bottom cylinder, wherein one end of the rotary bottom cylinder, which is close to the top, is rotatably connected with a fixed end hopper through a bearing, one end of the fixed end hopper is welded with a copper ring plate, the inner wall of the copper ring plate is welded with a grid cutter head, the middle end of the grid cutter head is welded with a middle end block, the outer wall of the bottom of the middle end block is rotatably connected with an end post through a bearing, the inner wall of the circumference of the rotary bottom cylinder is welded with wall rods which are distributed equidistantly, the end parts of the wall rods are arranged in a pointed shape, two sides of the end part of each wall rod are welded with symmetrically distributed corner prick rods, arc ribs are welded on the opposite sides of the corner prick rods and the wall rods, the outer wall of the circumference of each end post is provided with end ring grooves corresponding to the wall rods and the corner prick rods, the section of each end ring groove is of a triangular structure, and the bottom end of each end post is welded with fan blades, the utility model discloses a semiconductor refrigerator, including copper ring board, semiconductor refrigerator, fixed end bucket, fan blade, fixed end bucket, semiconductor refrigerator's refrigeration end, the one end that the equidistance distributes is all fought to one side outer wall of flabellum has all been welded to the sword that attaches that the equidistance distributes, swager is installed on the top that the fixed end was fought, and the fixed end bucket is close to the one end of copper ring board and all sets up the installation notch that the equidistance distributes, the inner wall of installation notch all is fixed with the semiconductor refrigerator through the screw, and the refrigeration end of semiconductor refrigerator is close to the copper ring board, the port that the equidistance annular distributes is all seted up to the circumference outer wall of copper ring board, and the interior bottom of port all sets up the triangle kerve that the equidistance distributes.

Preferably, the end post outer wall all welds the horizontal cutter arbor with crisscross distribution of arc muscle, the back of the body one side outer wall that carries on the back of the body of arc muscle all welds and attaches thorn one that the equidistance distributes, the both sides outer wall of horizontal cutter arbor all welds and attaches thorn two that the equidistance distributes.

Preferably, swager constructs including the hydraulic stem of being fixed in fixed end fill bottom through the bolt, and the extension rod tip of hydraulic stem has the clamp plate through the bolt fastening, the bottom outer wall welding of clamp plate has the piece of supporting with net blade disc looks adaptation.

Preferably, a bottom arc groove matched with the middle end block is formed in the central axis of the outer wall of the bottom of the pressing plate, and cutters distributed equidistantly are welded on the inner wall of the bottom arc groove.

Preferably, the top end of the middle end block is provided with a strip groove matched with the cutter, and guide pipes are vertically welded on two sides of the fixed end hopper close to the hydraulic rod.

Preferably, the bottom rods connected with the guide pipes in a sliding mode are welded to two sides of the outer wall of the top of the pressing plate, and compression springs are welded to the opposite sides of the bottom rods and the inner wall of the top of the guide pipes.

Preferably, the outer wall of the circumference of the end column is welded with twisted pieces which are distributed with the end ring grooves in a staggered manner.

Preferably, the outer wall of one end of the fixed end hopper is welded with a fixed connecting rod, the end part of the fixed connecting rod is welded with a same supporting ring, and four corners of the outer wall of the circumference of the supporting ring are welded with supporting legs.

Preferably, the outer wall welding that the rotatory end section of thick bamboo is close to the bottom has the bulge loop board, and the relative one side of bulge loop board and backing ring has all seted up the ring channel, corresponds two the inner wall roll connection of ring channel has the ball that the equidistance distributes, one side outer wall of fixed end fill has the rotating electrical machines through the bolt fastening, and the output shaft of rotating electrical machines has the transfer line through the coupling joint, the transfer line has cup jointed the belt with the end post and has formed the transmission cooperation, and transfer line and the relative one side of rotatory end section of thick bamboo respectively fixed mounting have engaged with drive gear and driven ring gear.

The invention also discloses a crushing method of the crushing and recycling device for plastic regeneration, which comprises the following steps: an operator controls and starts the semiconductor refrigerator, and performs refrigeration treatment on the grid cutter disc and the fixed end hopper by matching with the copper ring plate, and then, the recycled plastic is placed on the grid cutter disc; an operator controls and starts the hydraulic rod to push the pressing plate to move downwards, pre-cutting is carried out by utilizing the abutting block to be matched with the grid cutter disc, the cutter and the strip groove, and refrigeration treatment is carried out on the plastic by utilizing low temperature generated by the semiconductor refrigerator, so that the hardness of the plastic is improved, and the toughness of the plastic is reduced; an operator starts the rotating motor, the belt, the transmission gear and the driven gear ring are respectively utilized to drive the end post and the rotating bottom cylinder to rotate oppositely, the wall rod, the corner thorn rod, the arc rib and the cross cutter rod are utilized to be matched with the first thorn and the second thorn, which are used for reducing toughness, plastics are crushed, the fan blades rotate rapidly along with the end post, cold air at the upper end is pumped down, the device is prevented from heating, and the falling plastics are cut again by utilizing the attaching blade at one side.

The beneficial effects of the invention are as follows:

1. according to the crushing and recycling device for plastic regeneration and the crushing method thereof, the mesh cutter head and the fixed end hopper are subjected to refrigeration treatment by the arranged semiconductor refrigerator and the copper ring plate, and the plastic is subjected to refrigeration treatment, so that the hardness of the plastic is improved, the toughness of the plastic is reduced, and the crushing effect on the plastic is improved.

2. According to the crushing and recycling device for plastic regeneration and the crushing method thereof, the relative area between the copper ring plate and the semiconductor refrigerator can be effectively increased through the arranged port and the triangular bottom groove, so that the refrigeration and cooling effects on materials are improved; through the arranged pressing plate, the support block is matched with the grid cutter disc, the cutter and the strip groove to perform pre-cutting treatment, so that preliminary refining treatment is performed on the plastic.

3. According to the crushing and recycling device for plastic regeneration and the crushing method thereof, the end posts and the rotary bottom barrel can be driven to rotate oppositely by the aid of the belt, the transmission gear and the driven gear ring through the arranged rotary motor, and plastic with reduced toughness is crushed by the aid of the wall bars, the corner barbed bars, the arc ribs and the transverse cutter bar; the first auxiliary thorns and the second auxiliary thorns are arranged, so that the plastic crushing effect is further improved.

4. According to the crushing and recycling device for plastic regeneration and the crushing method thereof, the arranged twisting sheets can play an upward transmission role on materials in the rotating process, so that the descending speed of the plastic is effectively delayed, and the crushing effect of the plastic is ensured; through the flabellum that sets up, can be along with the end post rotates fast, take out the cold air of upper end down, avoid the device to generate heat to utilize attaching the sword of one side, cut the plastics of whereabouts again, further improve the crushing effect of plastics.

Drawings

FIG. 1 is a schematic overall structure diagram of a crushing and recycling device for plastic recycling and a crushing method thereof according to the present invention;

FIG. 2 is a schematic structural diagram of a mesh cutter head of the crushing and recycling device for plastic recycling and the crushing method thereof according to the present invention;

FIG. 3 is a schematic structural diagram of an end post of the crushing and recycling device for plastic recycling and the crushing method thereof according to the present invention;

FIG. 4 is an enlarged schematic structural diagram of a part A in FIG. 1 of a crushing and recycling device for recycling plastic and a crushing method thereof according to the present invention;

fig. 5 is a schematic view of a fan blade of the crushing and recycling device for plastic recycling and the crushing method thereof according to the present invention.

In the figure: 1. rotating the bottom cylinder; 2. a driven gear ring; 3. a wall bar; 4. fixing the connecting rod; 5. fixing the end hopper; 6. a semiconductor refrigerator; 7. a grid cutter head; 701. a copper ring plate; 702. a port; 703. a triangular bottom groove; 8. a middle end block; 9. a resisting block; 10. pressing a plate; 11. a guide tube; 12. a compression spring; 13. a cutter; 14. a hydraulic lever; 15. a bottom bar; 16. a bottom arc groove; 17. a rotating electric machine; 18. a transmission rod; 19. arc ribs; 1901. attaching a first spine; 20. a corner stabbing rod; 21. a transmission gear; 22. a collar plate; 23. a ring; 24. a transverse cutter bar; 2401. attaching a second spine; 25. an end ring groove; 26. twisting sheets; 27. an end post; 28. an attached blade; 29. a fan blade; 30. and (4) strip grooves.

Detailed Description

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-5, a crushing and recycling device for plastic regeneration and a crushing method thereof, comprising a rotary bottom cylinder 1, wherein one end of the rotary bottom cylinder 1 close to the top is rotatably connected with a fixed end hopper 5 through a bearing, one end of the fixed end hopper 5 is welded with a copper ring plate 701, the inner wall of the copper ring plate 701 is welded with a grid cutter head 7, the middle end of the grid cutter head 7 is welded with a middle end block 8, the outer wall of the bottom of the middle end block 8 is rotatably connected with an end post 27 through a bearing, the inner wall of the circumference of the rotary bottom cylinder 1 is welded with wall rods 3 distributed equidistantly, the end parts of the wall rods 3 are arranged in a pointed shape, two sides of the end parts of the wall rods 3 are welded with angle prick rods 20 distributed symmetrically, the opposite sides of the angle prick rods 20 and the wall rods 3 are welded with arc ribs 19, the outer wall of the circumference of the end post 27 is provided with end ring grooves 25 corresponding to the wall rods 3 and the angle prick rods 20, and the section of the end ring grooves 25 are in a triangular structure, the fan blades 29 are arranged by virtue of the structure, the fan blades 29 can rotate rapidly along with the end column 27, cold air at the upper end is pumped down, the device is prevented from heating, falling plastics are cut again by utilizing the auxiliary blades 28 at one side of the fan blades 29, and the crushing effect of the plastics is further improved; a material pressing mechanism is installed at the top end of the fixed end hopper 5, mounting notches which are distributed equidistantly are formed in one end, close to the copper ring plate 701, of the fixed end hopper 5, semiconductor refrigerators 6 are fixed to the inner walls of the mounting notches through screws, the refrigerating ends of the semiconductor refrigerators 6 are close to the copper ring plate 701, ports 702 which are distributed equidistantly and annularly are formed in the circumferential outer wall of the copper ring plate 701, and triangular bottom grooves 703 which are distributed equidistantly are formed in the inner bottom of the ports 702; by means of the structure, the arranged semiconductor refrigerator 6 is matched with the copper ring plate 701 to refrigerate the grid cutter head 7 and the fixed end hopper 5, and refrigerate the plastic, so that the hardness of the plastic is improved, the toughness of the plastic is reduced, and the plastic crushing effect is improved; through the port 702 and the triangular bottom groove 703, the relative area between the copper ring plate 701 and the semiconductor cooler 6 can be effectively increased, and the effects of refrigerating and cooling materials are improved.

Further, the outer walls of the end posts 27 are welded with transverse cutter bars 24 which are distributed in a staggered mode with the arc ribs 19, the outer walls of the opposite sides of the arc ribs 19 are welded with first auxiliary thorns 1901 which are distributed equidistantly, and the outer walls of the two sides of the transverse cutter bars 24 are welded with second auxiliary thorns 2401 which are distributed equidistantly; the crushing effect is improved by the arrangement of the first auxiliary thorn 1901 and the second auxiliary thorn 2401.

Further, the pressing mechanism comprises a hydraulic rod 14 fixed at the bottom end of the fixed end hopper 5 through a bolt, a pressing plate 10 is fixed at the end part of an extending rod of the hydraulic rod 14 through a bolt, and a supporting block 9 matched with the grid cutter disc 7 is welded on the outer wall of the bottom of the pressing plate 10.

Furthermore, a bottom arc groove 16 matched with the middle end block 8 is formed in the central axis of the outer wall of the bottom of the pressing plate 10, and cutters 13 distributed at equal intervals are welded on the inner wall of the bottom arc groove 16; by means of the structure, the hydraulic rod 14 is controlled to be started, the pressing plate 10 is pushed to move downwards, and pre-cutting processing can be carried out by the aid of the abutting block 9 matched with the grid cutter disc 7, the cutter 13 and the strip groove 30.

Further, the top end of the middle end block 8 is provided with a strip groove 30 matched with the cutter 13, and the two sides of the fixed end hopper 5 close to the hydraulic rod 14 are vertically welded with guide pipes 11.

Further, bottom rods 15 connected with the guide pipes 11 in a sliding mode are welded to two sides of the outer wall of the top of the pressing plate 10, and compression springs 12 are welded to the opposite sides of the bottom rods 15 and the inner wall of the top of the guide pipes 11.

Furthermore, the circumferential outer wall of the end post 27 is welded with twisted pieces 26 which are distributed with the end ring grooves 25 in a staggered manner; by means of the structure, the arranged twisting sheet 26 can play a role in upwards driving materials in the rotating process, so that the descending speed of plastics is effectively delayed, and the crushing effect of the plastics is ensured.

Further, fixed connecting rod 4 has all been welded to the one end outer wall of fixed end fill 5, and same backing ring 23 has all been welded to the tip of fixed connecting rod 4, and the landing leg has all been welded in the circumference outer wall four corners of backing ring 23.

Further, a convex ring plate 22 is welded on the outer wall of the rotary bottom cylinder 1 close to the bottom end, annular grooves are formed in opposite sides of the convex ring plate 22 and the supporting ring 23, balls distributed at equal intervals are connected with the inner walls of the two annular grooves in a rolling mode, a rotary motor 17 is fixed on the outer wall of one side of the fixed end hopper 5 through bolts, an output shaft of the rotary motor 17 is connected with a transmission rod 18 through a coupler, the transmission rod 18 and an end column 27 are sleeved with a belt to form transmission fit, and a transmission gear 21 and a driven gear ring 2 which are meshed with each other are fixedly installed on the transmission rod 18 and the opposite side of the rotary bottom cylinder 1 respectively; by means of the structure, the rotating motor 17 is started, and the belt, the transmission gear 21 and the driven gear ring 2 are respectively utilized to drive the end post 27 and the rotating bottom cylinder 1 to rotate oppositely.

Example 2

The embodiment discloses a crushing method of a crushing and recycling device for plastic regeneration, which comprises the following steps: an operator controls and starts the semiconductor refrigerator 6, and performs refrigeration treatment on the grid cutter 7 and the fixed end hopper 5 by matching with the copper ring plate 701, and then, the recycled plastic is placed on the grid cutter 7; an operator controls to start the hydraulic rod 14, pushes the pressing plate 10 to move downwards, performs precutting treatment by utilizing the abutting block 9 in cooperation with the grid cutter disc 7, the cutter 13 and the strip groove 30, and performs refrigeration treatment on the plastic by utilizing low temperature generated by the semiconductor refrigerator 6 so as to improve the hardness of the plastic and reduce the toughness of the plastic; an operator starts the rotating motor 17, drives the end post 27 and the rotating bottom cylinder 1 to rotate oppositely by respectively utilizing the belt, the transmission gear 21 and the driven toothed ring 2, utilizes the wall rod 3, the corner thorn rod 20, the arc rib 19 and the cross cutter rod 24 to be matched with the first thorn 1901 and the second thorn 2401 to crush the toughness-reduced plastic, and the fan blade 29 rotates rapidly along with the end post 27 to suck out the cold air at the upper end, so that the device is prevented from heating, and utilizes the auxiliary blade 28 at one side to re-cut the fallen plastic.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a plastics are broken recovery unit for regeneration, includes rotary bottom section of thick bamboo (1), the one end that rotary bottom section of thick bamboo (1) is close to the top is rotated through the bearing and is connected with fixed end fill (5), and the one end welding of fixed end fill (5) has copper ring board (701), its characterized in that, the inner wall welding of copper ring board (701) has net blade disc (7), and the middle-end welding of net blade disc (7) has well end block (8), the bottom outer wall of well end block (8) is rotated through the bearing and is connected with end post (27), rotary bottom section of thick bamboo (1) circumference inner wall all welds wall pole (3) that the equidistance distributes, and the tip of wall pole (3) sets up to the pointed form, the tip both sides of wall pole (3) all weld angle thorn pole (20) of symmetric distribution, and angle thorn pole (20) and the relative one side of wall pole (3) all weld arc muscle (19), the circumferential outer wall of the end post (27) is provided with end ring grooves (25) corresponding to the wall rod (3) and the corner barbed rod (20), the section of the end ring groove (25) is in a triangular structure, the bottom end of the end post (27) is welded with a fan blade (29), the outer wall of one side of the fan blade (29) is welded with auxiliary blades (28) which are distributed at equal intervals, the top end of the fixed end hopper (5) is provided with a material pressing mechanism, and the fixed end hopper (5) is provided with mounting notches which are distributed at equal intervals at one end close to the copper ring plate (701), the inner walls of the mounting notches are all fixed with a semiconductor refrigerator (6) through screws, the refrigerating end of the semiconductor refrigerator (6) is close to the copper ring plate (701), ports (702) which are distributed in an annular shape at equal intervals are arranged on the circumferential outer wall of the copper ring plate (701), and triangular bottom grooves (703) which are distributed equidistantly are arranged at the inner bottom of the port (702).

2. The crushing and recycling device for recycling plastic according to claim 1, wherein the outer walls of the end pillars (27) are welded with cross cutter bars (24) which are distributed in a staggered manner with the arc ribs (19), the outer walls of the opposite sides of the arc ribs (19) are welded with first attached thorns (1901) which are distributed equidistantly, and the outer walls of the two sides of the cross cutter bars (24) are welded with second attached thorns (2401) which are distributed equidistantly.

3. The crushing and recycling device for plastic recycling according to claim 1, wherein the pressing mechanism comprises a hydraulic rod (14) fixed at the bottom end of the fixed end hopper (5) through bolts, a pressing plate (10) is fixed at the end of an extending rod of the hydraulic rod (14) through bolts, and a supporting block (9) matched with the grid cutter head (7) is welded on the outer wall of the bottom of the pressing plate (10).

4. The crushing and recycling device for plastic recycling according to claim 3, wherein a bottom arc groove (16) matched with the middle end block (8) is formed in the central axis of the outer wall of the bottom of the pressing plate (10), and cutters (13) distributed at equal intervals are welded on the inner wall of the bottom arc groove (16).

5. The crushing and recycling device for plastic recycling according to claim 4, wherein the top end of the middle end block (8) is provided with a groove (30) matched with the cutting knife (13), and both sides of the fixed end hopper (5) close to the hydraulic rod (14) are vertically welded with guide pipes (11).

6. The crushing and recycling device for recycling plastic according to claim 5, wherein bottom rods (15) slidably connected with the guide pipes (11) are welded on both sides of the top outer wall of the pressing plate (10), and compression springs (12) are welded on the opposite sides of the bottom rods (15) and the top inner wall of the guide pipes (11).

7. The crushing and recycling device for the recycling of plastics according to claim 1, characterized in that the peripheral outer wall of the end post (27) is welded with twisted pieces (26) which are distributed in a staggered way with the end ring groove (25).

8. The crushing and recycling device for plastic recycling according to claim 1, wherein the fixed connecting rods (4) are welded on the outer wall of one end of the fixed end hopper (5), the same supporting ring (23) is welded on the end of each fixed connecting rod (4), and the supporting legs are welded on four corners of the outer wall of the circumference of the supporting ring (23).

9. The crushing and recycling device for plastic recycling according to claim 8, wherein a convex ring plate (22) is welded on the outer wall of the rotary bottom cylinder (1) close to the bottom end, annular grooves are formed in the opposite sides of the convex ring plate (22) and the supporting ring (23), balls distributed at equal intervals are connected to the inner walls of the two corresponding annular grooves in a rolling mode, a rotating motor (17) is fixed to the outer wall of one side of the fixed end hopper (5) through bolts, the output shaft of the rotating motor (17) is connected with a transmission rod (18) through a coupler, the transmission rod (18) and the end column (27) are sleeved with a belt to form transmission fit, and a transmission gear (21) and a driven gear ring (2) which are meshed with each other are fixedly installed on the opposite sides of the transmission rod (18) and the rotary bottom cylinder (1) respectively.

10. The crushing method of the crushing recovery device for plastic recycling according to any one of claims 1 to 9, comprising the steps of:

the method comprises the following steps: an operator controls and starts the semiconductor refrigerator (6), and performs refrigeration treatment on the grid cutter head (7) and the fixed end hopper (5) by matching with the copper ring plate (701), and then, the recycled plastic is placed on the grid cutter head (7);

step two: an operator controls and starts the hydraulic rod (14), pushes the pressing plate (10) to move downwards, performs pre-cutting treatment by utilizing the abutting block (9) to be matched with the grid cutter disc (7), the cutter (13) and the strip groove (30), and performs refrigeration treatment on the plastic by utilizing low temperature generated by the semiconductor refrigerator (6) so as to improve the hardness of the plastic and reduce the toughness of the plastic;

step three: an operator starts a rotating motor (17), a belt is utilized respectively, a transmission gear (21) and a driven toothed ring (2) are utilized to drive an end post (27) and a rotary bottom cylinder (1) to rotate oppositely, a wall rod (3), an angle thorn rod (20), an arc rib (19) and a transverse cutter rod (24) are utilized to match with an thorn I (1901), an thorn II (2401) is attached to carry out crushing treatment on the plastic with reduced toughness, a fan blade (29) rotates rapidly along with the end post (27), cold air at the upper end is pumped down, the device is prevented from heating, an attached blade (28) at one side is utilized, and the falling plastic is cut again.