Plastic crushing device

Abstract

The invention relates to the technical field of plastic crushing, in particular to a plastic crushing device which comprises a crushing box, a feeding hopper is installed on the upper portion of one side of the crushing box, two crushing shafts are rotatably installed between the two ends of the crushing box, and a crushing roller is installed in the middle of the outer side wall of each crushing shaft. Two supports are installed above one side of the smashing box, vertical plates are installed on the supports, and a dust removal box is arranged between the two vertical plates. According to the plastic cutting device, the hollow shaft is rotated firstly, the hollow shaft drives the cutting blades to rotate, plastic is cut into small pieces, follow-up smashing is facilitated, meanwhile, hot air generated by the air heater enters the hollow shaft through the rotating connector and then is discharged through the air outlet, wet dust attached to the surface of the plastic is dried, moisture in the dust is evaporated, the dust becomes dry, and adhesive force is weakened; and the plastic is dedusted firstly, so that the subsequent cleaning is simpler, the consumption of water resources is reduced, and the cleaning cost and the treatment time are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic crushing, in particular to a plastic crushing device. Background Art

[0002] Plastic is a high-molecular compound made from monomers through addition polymerization or condensation polymerization. It has a medium deformation resistance, between that of fiber and rubber. It is composed of synthetic resin and fillers, plasticizers, stabilizers, lubricants, colorants and other additives. Common ways of recycling plastics include physical utilization, chemical utilization, processing utilization and combustion utilization. Among them, physical utilization refers to the recycling method in which waste plastics are recycled and reused after simple cleaning and crushing.

[0003] China Invention Publication No.: CN118238319B includes an outer shell, the upper side surface of the outer shell is provided with a feed inlet, and the lower side surface of the outer shell is fixedly provided with a crushing motor, a rotating crushing roller is installed inside the outer shell, and one end of the rotating shaft of the crushing roller passes through the side surface of the outer shell, and the two transmission gears are meshed with each other, and the side surface of the outer shell is provided with a shaking mechanism, which prevents the accumulation and blockage of materials by shaking the materials during the crushing process. The dust-suppressing plastic waste recycling and processing crusher adopts the method of providing a shaking mechanism below the feed inlet at the upper end of the outer shell, so that the waste plastic can be pushed from bottom to top under the drive of the shaking mechanism when it is blocked after being put into the outer shell, so that the accumulated waste plastic can fall smoothly and autonomously without the need for additional manual intervention.

[0004] The applicant found that the patent had some shortcomings in use: waste plastics may come from different places. If stored in an outdoor environment, they will inevitably be exposed to dust in the air. For example, waste plastics discarded on construction sites will quickly be covered with a thick layer of dust and dirt due to the dust at the construction site. The crushed plastic particles are mixed with dust and dirt, so more water resources are required in the subsequent cleaning process, which increases the cleaning cost and processing time.

[0005] Therefore, the present invention designs a plastic crushing device to solve the problems existing in the prior art. Summary of the invention

[0006] The object of the present invention is to provide a plastic crushing device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic crushing device, comprising: a crushing box, a feeding hopper is installed above one side of the crushing box, two crushing shafts are rotatably installed between the two ends of the crushing box, a crushing roller is installed in the middle of the outer wall of the crushing shaft, one end of one of the crushing shafts is connected to the output end of the crushing motor, a gear is installed on the outer wall of one end of the crushing shaft, and the two gears are meshed with each other, two brackets are installed above one side of the crushing box, a vertical plate is installed on the bracket, a dust removal box is arranged between the two vertical plates, a first dust removal mechanism is arranged in the dust removal box, the first dust removal mechanism includes a shredding evaporation component and an oscillation component, a feeding component is arranged on one side of the dust removal box, a second dust removal mechanism is arranged below the crushing roller, and a dust suction mechanism is arranged between the dust removal box and the crushing box, plastic enters the crushing box through the feeding hopper, the crushing motor drives one crushing shaft to rotate, and the other crushing shaft is rotated through the meshing of the two gears, so that the two crushing rollers can be rotated to crush the plastic.

[0008] Preferably, the shredding evaporation component includes a hollow shaft, which is rotatably installed between two sides of the dust removal box, a plurality of shredding blades are installed on the outer side wall of the hollow shaft, a worm gear is installed on the outer side wall of one side of the hollow shaft, a worm screw meshing with the worm gear is rotatably installed on one side of the dust removal box, a rotary joint is connected to one side of the hollow shaft, a hot air blower connected to the rotary joint is installed on one side of the dust removal box, a plurality of air outlets are opened on the surface of the hollow shaft, and a protective net is installed on the inner wall of the air outlet, the worm gear drives the worm gear to rotate to rotate the hollow shaft, and the hollow shaft drives the shredding blades to rotate, so that the plastic can be cut into small pieces for subsequent crushing. At the same time, the hot air blower generates hot air, which enters the hollow shaft through the rotary joint and is discharged through the air outlet, thereby heating the dust attached to the plastic, evaporating the moisture in the dust, drying the dust, weakening the adhesion, and making it easier to detach from the plastic. The protective net can prevent the plastic from getting stuck in the air outlet.

[0009] Preferably, the oscillation assembly includes two frames, which are respectively located in the middle of both ends of the dust removal box, a slide is slidably installed in the frame, a slide rod slidably connected to the slide is installed in the frame, the upper and lower ends of the slide are connected to the frame through a spring, a vibrator is installed on the top of the slide, one end of the slide is fixed to the dust removal box, the vibrator is started to make the slide vibrate, the slide rod limits the slide, the slide slides up and down and squeezes the spring, and the dust removal box can be driven to vibrate up and down by the restoring force of the spring, so that the plastic vibrates, which can better remove the dust attached to the plastic surface.

[0010] Preferably, the unloading assembly includes a unloading chute, which is arranged at the lower side of the dust removal box away from the hot air blower, and an electric cylinder fixedly mounted on the dust removal box is arranged above the unloading chute, and the output end of the electric cylinder is connected to a baffle plugged into the unloading chute, and a unloading motor is installed on the vertical plate, and the output end of the unloading motor and the frame are fixedly mounted. When the dust is sucked away, the unloading motor drives the frame to rotate to tilt the dust removal box, and then the electric cylinder drives the baffle to move. After the baffle leaves the unloading chute, the plastic can be unloaded into the feed hopper for easy crushing. During the dust suction process, the unloading motor can drive the dust removal box to tilt in the opposite direction, which is convenient for the hose to suction dust.

[0011] Preferably, the second dust removal mechanism includes two electric push rods, which are respectively fixedly mounted on both sides of the bottom inner wall of the crushing box, the output ends of the electric push rods are connected to T-shaped limit strips, a collecting net box is provided below the crushing roller, and a T-shaped limit slot slidably connected to the T-shaped limit strip is provided at the bottom of the collecting net box, two rotating shafts are rotatably mounted between the two ends of the crushing box, a plurality of stirring rods are mounted on the outer side wall of the rotating shaft, and transmission wheels are mounted on the outer side wall of the rotating shaft and the outer side wall of the crushing shaft, and the two transmission wheels are driven by a transmission belt. The inner wall of one side of the crushing box is inclined and provided with a plurality of nozzles. After the plastic particles are crushed, they fall into the collecting net box. The nozzles spray water to clean the plastic particles. The crushing shaft rotates, and the transmission of the transmission wheel and the transmission belt makes the rotating shaft rotate to drive the stirring rod to rotate, so as to break up the plastic particles in the collecting net box and improve the cleaning effect. When the collecting net box is full, the electric push rod drives the T-shaped limit bar to descend to make the collecting net box descend, so that the stirring rod leaves the collecting net box, and then the door of the crushing box is opened, and the collecting net box is pulled horizontally to pull out the collecting net box, and the plastic particles are sent to the next process for processing.

[0012] Preferably, a plurality of air nozzles are obliquely installed on the inner wall of the other side of the crushing box. After cleaning, the air nozzles spray hot air to dry the plastic particles, thereby facilitating further processing of the plastic particles.

[0013] Preferably, the dust suction mechanism includes a support plate, which is installed on one side of the crushing box, an industrial vacuum cleaner is installed on the top of the support plate, a cylinder is installed on the top of the crushing box, the output end of the cylinder is connected to a baffle box, a plurality of dust suction nozzles are provided at the bottom of the baffle box, and a baffle is installed on the inner wall of the crushing box away from the feed hopper. The bottom of the dust removal box is located on one side of the rotary joint and one end of the baffle box is connected to the industrial vacuum cleaner through a hose. The industrial vacuum cleaner is a prior art, and a high-power vacuum cleaner of any brand can be selected. The two hoses are connected to the dust suction port of the industrial vacuum cleaner through a two-way joint, and an isolation net is installed on the top of the hose connected to the dust removal box to prevent plastic from getting stuck in the hose.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention, through the setting of the first dust removal mechanism, first pours the recycled waste plastic into the dust removal box, the rotation of the worm drives the worm wheel to rotate, the hollow shaft rotates, and the hollow shaft drives the shredder blade to rotate, cuts the plastic into small pieces, and is convenient for subsequent crushing. At the same time, the hot air generated by the hot air blower enters the hollow shaft through the rotary joint and is discharged through the air outlet, so as to dry the moist dust attached to the surface of the plastic, and the moisture in the dust evaporates, the dust becomes dry, the adhesion is weakened, and it is easier to separate from the plastic. At the same time, the vibrator is started to make the slide plate slide on the slide bar and squeeze the spring, and the dust removal box is vibrated up and down through the restoring force of the spring, which can better separate the dust attached to the plastic surface, and then the industrial vacuum cleaner is started to make the hose at the bottom of the dust removal box generate negative pressure to suck away the dust, and then the plastic is fed into the feed hopper for crushing. By removing the dust from the plastic first, subsequent cleaning is simpler, the consumption of water resources is reduced, and the cleaning cost and processing time are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional schematic diagram of the present invention;

[0017] Figure 2 It is a bottom cross-sectional schematic diagram of the present invention;

[0018] Figure 3 It is a rear view schematic diagram of the present invention;

[0019] Figure 4 It is a schematic cross-sectional view of the dust removal box structure of the present invention;

[0020] Figure 5 For the present invention Figure 4 A schematic diagram of the structure at A;

[0021] Figure 6 For the present invention Figure 4 A schematic diagram of the structure at B;

[0022] Figure 7 It is a schematic diagram of the structure of the blanking assembly of the present invention;

[0023] Figure 8 It is a schematic structural diagram of the second dust removal mechanism of the present invention.

[0024] In the figure: 1. crushing box; 2. feeding hopper; 3. crushing shaft; 4. crushing roller; 5. crushing motor; 6. gear; 7. bracket; 8. vertical plate; 9. dust removal box; 10. first dust removal mechanism; 101. chopping evaporation component; 1011. hollow shaft; 1012. chopping blade; 1013. worm gear; 1014. worm; 1015. rotary joint; 1016. hot air blower; 1017. air outlet; 1018. protective net; 102. oscillation component; 1021. frame; 1022. slide plate; 1023. slide bar; 1024. spring; 1025. vibrator ; 11. unloading assembly; 111. unloading chute; 112. electric cylinder; 113. baffle; 114. unloading motor; 12. second dust removal mechanism; 121. electric push rod; 122. T-shaped limit strip; 123. collection net box; 124. T-shaped limit slot; 125. rotating shaft; 126. stirring rod; 127. transmission wheel; 128. transmission belt; 129. nozzle; 1210. air nozzle; 13. dust suction mechanism; 131. support plate; 132. industrial vacuum cleaner; 133. cylinder; 134. baffle box; 135. dust suction nozzle; 136. block; 137. hose. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0026] See also Figure 1-8 , an embodiment of the present invention: a plastic crushing device comprises: a crushing box 1, a feeding hopper 2 is installed above one side of the crushing box 1, two crushing shafts 3 are rotatably installed between the two ends of the crushing box 1, a crushing roller 4 is installed in the middle of the outer wall of the crushing shaft 3, one end of a crushing shaft 3 is connected to the output end of the crushing motor 5, a gear 6 is installed on the outer wall of one end of the crushing shaft 3, and the two gears 6 are meshed with each other, two brackets 7 are installed above one side of the crushing box 1, a vertical plate 8 is installed on the bracket 7, a dust removal box 9 is arranged between the two vertical plates 8, a first dust removal mechanism 10 is arranged in the dust removal box 9, the first dust removal mechanism 10 includes a shredding evaporation component 101 and an oscillation component 102, a material discharge component 11 is arranged on one side of the dust removal box 9, a second dust removal mechanism 12 is arranged below the crushing roller 4, a dust suction mechanism 13 is arranged between the dust removal box 9 and the crushing box 1, a box door is arranged below one end of the crushing box 1, which is convenient for taking the collection net box 123, and a sewage pipe is arranged below one side of the crushing box 1 to facilitate the discharge of sewage from washing plastics.

[0027] See also Figure 1-3In this embodiment: the chopping and evaporating component 101 includes a hollow shaft 1011, the hollow shaft 1011 is rotatably installed between the two sides of the dust removal box 9, a plurality of chopping blades 1012 are installed on the outer wall of the hollow shaft 1011, a worm gear 1013 is installed on the outer wall of one side of the hollow shaft 1011, a worm 1014 meshing with the worm gear 1013 is rotatably installed on one side of the dust removal box 9, a rotary joint 1015 is connected to one side of the hollow shaft 1011, a hot air blower 1016 connected to the rotary joint 1015 is installed on one side of the dust removal box 9, and a plurality of air outlets are opened on the surface of the hollow shaft 1011 The top of the worm 1014 is connected to the output of the servo motor. The servo motor drives the worm 1014 to rotate, so that the worm wheel 1013 rotates, which can drive the hollow shaft 1011 to rotate, and the shredding blade 1012 rotates to cut the plastic into small pieces. At the same time, the hot air blower 1016 is started, and the hot air enters the hollow shaft 1011 through the rotary joint 1015, and then is discharged through the air outlet 1017, so as to heat the damp dust attached to the surface of the plastic, evaporate the moisture in the dust, dry the dust, weaken the adhesion, and make it easier to detach from the plastic.

[0028] See also Figure 1-3 In this embodiment: the oscillation component 102 includes two frames 1021, and the two frames 1021 are respectively located in the middle of the two ends of the dust removal box 9. A slide plate 1022 is slidably installed in the frame 1021, and a slide bar 1023 slidably connected to the slide plate 1022 is installed in the frame 1021. The upper and lower ends of the slide plate 1022 are connected to the frame 1021 through a spring 1024. A vibrator 1025 is installed on the top of the slide plate 1022. One end of the slide plate 1022 is fixedly installed with the dust removal box 9. The vibrator 1025 drives the slide plate 1022 to vibrate. The slide bar 1023 limits the slide plate 1022, so that the slide plate 1022 slides up and down and squeezes the spring 1024. The restoring force of the spring 1024 can make the slide plate 1023 drive the dust removal box 9 to vibrate, which can better remove the dust attached to the plastic surface.

[0029] See also Figure 1-3 In this embodiment: the unloading component 11 includes a unloading chute 111, which is opened at the bottom of the dust removal box 9 away from the hot air blower 1016. An electric cylinder 112 fixedly installed with the dust removal box 9 is provided above the unloading chute 111, and the output end of the electric cylinder 112 is connected to a baffle 113 plugged into the unloading chute 111. A unloading motor 114 is installed on the vertical plate 8, and the output end of the unloading motor 114 is fixedly installed with the frame 1021. The dust and plastic are separated, and the unloading can be carried out after the dust is sucked away. The unloading motor 114 first drives the frame 1021 to tilt, which can tilt the dust removal box 9, and then the electric cylinder 112 drives the baffle 113 to leave the unloading chute 111, and the plastic can automatically roll out of the unloading chute 111 into the feed hopper 2.

[0030] See also Figure 1-3 In this embodiment: the second dust removal mechanism 12 includes two electric push rods 121, which are fixedly mounted on both sides of the bottom inner wall of the crushing box 1 respectively, and the output end of the electric push rod 121 is connected to a T-shaped limit strip 122. A collecting net box 123 is provided below the crushing roller 4, and a T-shaped limit slot 124 is provided at the bottom of the collecting net box 123, which is slidably connected to the T-shaped limit strip 122. Two rotating shafts 125 are rotatably mounted between the two ends of the crushing box 1, and a plurality of stirring rods 126 are mounted on the outer wall of the rotating shaft 125. A transmission wheel 127 is mounted on the outer wall of the rotating shaft 125 and the outer wall of the crushing shaft 3. The two transmission wheels 127 are driven by a transmission belt 128. A plurality of nozzles 129 are inclined on the inner wall of one side of the crushing box 1, and the plurality of nozzles 129 are connected to a water tank. The water tank is mounted on the inner wall of the crushing box 1, and the water tank is connected through a water pipe, a booster pump and a faucet. A waterproof shell is provided on the outer side of the two electric push rods 121.

[0031] See also Figure 1-3 In this embodiment: a plurality of air nozzles 1210 are obliquely installed on the inner wall of the other side of the crushing box 1, and the plurality of air nozzles 1210 are connected to the air box, which is installed on the inner wall of the crushing box 1, and is connected to the hot air device through an air pipe.

[0032] See also Figure 1-3 In this embodiment: the dust suction mechanism 13 includes a support plate 131, which is installed on one side of the crushing box 1, and an industrial vacuum cleaner 132 is installed on the top of the support plate 131. A cylinder 133 is installed on the top of the crushing box 1, and the output end of the cylinder 133 is connected to a baffle box 134. A plurality of dust suction nozzles 135 are provided at the bottom of the baffle box 134. A baffle 136 is installed on the inner wall of the crushing box 1 away from the feed hopper 2. The bottom of the dust removal box 9 is located on one side of the rotary joint 1015 and one end of the baffle box 134 are connected to the industrial vacuum cleaner 132 through a hose 137. When crushing, the cylinder 133 drives the baffle box 134 to descend and get stuck between the feed hopper 2 and the baffle 136, so as to prevent the dust generated by the crushing from being discharged through the feed hopper 2. At the same time, the dust can be sucked away through the dust suction nozzle 135.

[0033] Working principle: Pour the waste plastic into the dust removal box 9, then the worm 1014 drives the worm wheel 1013 to rotate, so that the hollow shaft 1011 drives the shredding blade 1012 to rotate, and the larger plastic is shredded to facilitate the subsequent crushing. At the same time, the hot air blower 1016 is started, and the hot air enters the hollow shaft 1011 through the rotary joint 1015 and then enters the dust removal box 9 through the air outlet 1017 to dry the damp dust attached to the surface of the plastic. The moisture in the dust evaporates, the dust becomes dry, the adhesion is weakened, and it is easier to detach from the plastic. At the same time, the vibrator 1025 is started to make the slide plate 1022 Vibration is generated, and the spring 1024 is squeezed to deform the spring 1024 and the slide bar 1023 limits the slide plate 1022, so that the dust box 9 vibrates up and down, and the plastic vibrates, which can better remove the dust attached to the surface of the plastic. Then the industrial vacuum cleaner 132 is started to make the hose 137 at the bottom of the dust box 9 generate negative pressure to suck away the dust. Then the unloading motor 114 drives the frame 1021 to tilt, so that the dust box 9 tilts, and the electric cylinder 112 drives the baffle 113 to leave the unloading chute 111, and the plastic can slide out of the dust box 9 into the feed hopper 2, and roll onto the crushing roller 4 for feeding. During the crushing, the cylinder 133 drives the baffle box 134 to descend and get stuck between the feed hopper 2 and the baffle 136, which can reduce the dust generated during the crushing and scatter through the feed hopper 2. Then the industrial vacuum cleaner 132 is started to make the hose 137 at one end of the baffle box 134 generate negative pressure, so that the dust generated by the crushing can be sucked away, and the crushed plastic falls into the collection net box 123 for collection. At the same time, the nozzle 129 sprays water to clean the plastic particles. The crushing shaft 3 rotates through the transmission wheel 127 and the transmission belt 128 to make the rotating shaft 125 rotate, so that the stirring rod 12 6 is rotated to break up the plastic particles and improve the cleaning effect. After cleaning, the air nozzle 1210 is started, and the air nozzle 1210 sprays hot air to dry the plastic particles. Finally, the electric push rod 121 drives the T-shaped limit bar 122 to descend, so that the collecting net box 123 descends and leaves the stirring rod 126, and then the box door of the crushing box 1 is opened, and the collecting net box 123 is pulled to separate the T-shaped limit bar 122 and the T-shaped limit groove 124, and the collecting net box 123 can be taken out, and the plastic particles can be sent to the next process. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic crushing device, comprising: A crushing box (1), characterized in that: a feed hopper (2) is installed above one side of the crushing box (1), two crushing shafts (3) are rotatably installed between the two ends of the crushing box (1), a crushing roller (4) is installed in the middle of the outer wall of the crushing shaft (3), one end of the crushing shaft (3) is connected to the output end of the crushing motor (5), a gear (6) is installed on the outer wall of one end of the crushing shaft (3), and the two gears (6) are meshed, and two brackets are installed above one side of the crushing box (1). (7), a vertical plate (8) is installed on the bracket (7), a dust removal box (9) is provided between the two vertical plates (8), a first dust removal mechanism (10) is provided in the dust removal box (9), the first dust removal mechanism (10) includes a shredding evaporation component (101) and an oscillation component (102), a material discharge component (11) is provided on one side of the dust removal box (9), a second dust removal mechanism (12) is provided below the crushing roller (4), and a dust suction mechanism (13) is provided between the dust removal box (9) and the crushing box (1).

2. A plastic crushing device according to claim 1, characterized in that: The chopping and evaporating component (101) comprises a hollow shaft (1011), the hollow shaft (1011) is rotatably mounted between two sides of a dust removal box (9), a plurality of chopping blades (1012) are mounted on the outer side wall of the hollow shaft (1011), a worm gear (1013) is mounted on one side of the outer side wall of the hollow shaft (1011), a worm (1014) meshing with the worm gear (1013) is rotatably mounted on one side of the dust removal box (9), a rotary joint (1015) is connected to one side of the hollow shaft (1011), a hot air blower (1016) connected to the rotary joint (1015) is mounted on one side of the dust removal box (9), a plurality of air outlets (1017) are opened on the surface of the hollow shaft (1011), and a protective net (1018) is mounted on the inner wall of the air outlet (1017).

3. A plastic crushing device according to claim 1, characterized in that: The oscillation component (102) comprises two frames (1021), the two frames (1021) are respectively located in the middle of the two ends of the dust removal box (9), a slide plate (1022) is slidably installed in the frame (1021), a slide bar (1023) slidably connected to the slide plate (1022) is installed in the frame (1021), the upper and lower ends of the slide plate (1022) are connected to the frame (1021) through a spring (1024), and a vibrator (1025) is installed on the top of the slide plate (1022).

4. A plastic crushing device according to claim 1, characterized in that: The material discharge assembly (11) comprises a material discharge chute (111), the material discharge chute (111) being arranged below a side of the dust removal box (9) away from the hot air blower (1016), an electric cylinder (112) being fixedly mounted to the dust removal box (9) being arranged above the material discharge chute (111), the output end of the electric cylinder (112) being connected to a baffle (113) plugged into the material discharge chute (111), a material discharge motor (114) being installed on the vertical plate (8), and the output end of the material discharge motor (114) being fixedly mounted to the frame (1021).

5. A plastic crushing device according to claim 1, characterized in that: The second dust removal mechanism (12) comprises two electric push rods (121), the two electric push rods (121) are respectively fixedly mounted on both sides of the bottom inner wall of the crushing box (1), the output end of the electric push rod (121) is connected to a T-shaped limit strip (122), a collecting net box (123) is provided below the crushing roller (4), the bottom of the collecting net box (123) is provided with a T-shaped limit slot (124) slidably connected to the T-shaped limit strip (122), two rotating shafts (125) are rotatably mounted between the two ends of the crushing box (1), a plurality of stirring rods (126) are mounted on the outer side wall of the rotating shaft (125), a transmission wheel (127) is mounted on the outer side wall of the rotating shaft (125) and the outer side wall of the crushing shaft (3), and the two transmission wheels (127) are driven by a transmission belt (128), and a plurality of nozzles (129) are inclinedly mounted on one side inner wall of the crushing box (1).

6. A plastic crushing device according to claim 5, characterized in that: A plurality of air nozzles (1210) are obliquely mounted on the inner wall of the other side of the crushing box (1).

7. A plastic crushing device according to claim 1, characterized in that: The dust collecting mechanism (13) comprises a support plate (131), the support plate (131) being mounted on one side of the crushing box (1), an industrial dust collector (132) being mounted on the top of the support plate (131), a cylinder (133) being mounted on the top of the crushing box (1), the output end of the cylinder (133) being connected to a baffle box (134), a plurality of dust collecting nozzles (135) being arranged at the bottom of the baffle box (134), a baffle block (136) being mounted on the inner wall of the crushing box (1) away from the feed hopper (2), and the bottom of the dust removal box (9) being located on one side of the rotary joint (1015) and one end of the baffle box (134) being connected to the industrial dust collector (132) via a hose (137).

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