PET plastic crushing pretreatment equipment and treatment method thereof

Abstract

The invention discloses PET plastic crushing pretreatment equipment and a treatment method thereof, and relates to the technical field of PET plastic crushing pretreatment, the PET plastic crushing pretreatment equipment comprises a rack, a conveying assembly is installed on the upper portion of the rack, a first material guide plate is installed on the upper portion of one side of the rack, the first material guide plate is inclined downwards, and a second material guide plate is installed on the lower portion of one side of the rack; a bottle washing barrel is installed on the lower portion of the other side of the first material guide plate, a collecting box is installed on one side of the bottle washing barrel, a second material guide plate is installed on one side of the upper portion of the collecting box and inclines downwards, and a crushing box is installed on the lower portion of the other side of the second material guide plate. According to the scheme, the problems that in the existing PET plastic bottle treatment and separation process, the plastic bottles need to be manually held, bottle caps are screwed off through existing separation equipment, dirt on the surfaces of the recycled PET plastic bottles influences the body health of operators, the labor time of manually holding the plastic bottles is long, the working efficiency is low, batch separation operation cannot be carried out, and the like are solved. The treatment efficiency of the PET plastic bottles is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of PET plastic crushing pretreatment, in particular to PET plastic crushing pretreatment equipment and a treatment method thereof. Background Art

[0002] PET plastic bottles are not only widely used to package carbonated beverages, drinking water, fruit juice, enzymes and tea drinks, etc., and are the most widely used beverage packaging today, but are also widely used in many fields such as food, chemical, and pharmaceutical packaging. The recycling of PET plastic bottles can not only solve environmental problems, but also can be used as a new raw material resource to alleviate the contradiction of insufficient PET raw materials.

[0003] However, in the existing PET plastic bottle processing and separation process, the plastic bottles need to be manually held and the bottle caps need to be twisted off through the existing separation equipment. The dirt on the surface of the recycled PET plastic bottles affects the health of the operators. Manually holding the plastic bottles takes a long time and has low work efficiency. Batch separation operations cannot be carried out, which affects the processing efficiency of PET plastic bottles. For this reason, we provide a PET plastic crushing pretreatment equipment and a processing method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a PET plastic crushing pretreatment equipment and a treatment method thereof, so as to solve the problem proposed in the above background technology that in the process of processing and separating the existing PET plastic bottles, the existing separation equipment needs to be used to twist off the bottle caps, the dirt on the surface of the recycled PET plastic bottles affects the health of the operators, the labor time of manually holding the plastic bottles is long, and the work efficiency is low, and batch separation operations cannot be carried out, which affects the processing efficiency of the PET plastic bottles.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PET plastic crushing pretreatment equipment, comprising a frame, a conveying assembly is installed on the upper part of the frame, a first material guide plate is installed on the upper part of one side of the frame, the first material guide plate is inclined downward, a bottle washing cylinder is installed on the lower part of the other side of the first material guide plate, a collecting box is installed on one side of the bottle washing cylinder, a second material guide plate is installed on one side of the upper part of the collecting box, the second material guide plate is inclined downward, a crushing box is installed on the lower part of the other side of the second material guide plate, a discharging hopper is installed on the lower part of one side of the crushing box, a strong cleaning cylinder is installed on the other side of the discharging hopper, a label air separation tube is installed on the lower part of the other side of the strong cleaning cylinder, and baffles are installed on both sides of the top of the frame.

[0006] Preferably, the conveying assembly includes multiple groups of conveying rollers, which are evenly distributed on the upper part of the frame. A first driving motor is installed on one side of one end of the frame. Both ends of the conveying rollers are fixedly connected to the frame through a first rotating shaft. A belt is connected for transmission between the first rotating shafts at the same end, and a rubber sleeve is installed on the outer wall of the conveying roller.

[0007] Preferably, a U-shaped support frame is installed at the lower part of the bottle washing barrel, and a second driving motor is installed on the outer walls at both ends of the U-shaped support frame, a second rotating shaft is installed on the output shaft of the second driving motor, and a clamping plate is installed on the other end of the second rotating shaft, and the clamping plate is fixedly connected to the outer wall of the bottle washing barrel, a third driving motor is installed on the outer bottom of the bottle washing barrel, a first stirring rod is installed on the inner bottom of the bottle washing barrel, and a plurality of groups of first stirring blades are installed on both ends of the outer wall of the first stirring rod.

[0008] Preferably, the upper hinge inside the collecting box is connected to a filter plate, and hydraulic cylinders are installed at both ends of the lower part of the other side of the filter plate through the collecting box, and fixed plates are installed at both ends of the top of the hydraulic cylinder. A bearing is installed between the two fixed plates, and the top of the bearing is fixedly connected to the bottom of the filter plate. A discharge port is provided at the top of one side of the collecting box.

[0009] Preferably, a first crushing wheel is installed on both sides of the upper inner part of the crushing box, a fourth drive motor is installed on both sides of one end outside the crushing box, a second crushing wheel is installed on both ends of the lower inner part of the crushing box, a fifth drive motor is installed on both ends of one side outside the crushing box, an inclined plate is installed on the inner bottom of the crushing box, and extension plates are installed on one side and both ends of the top of the crushing box.

[0010] Preferably, a first valve is installed at the connection between the discharge hopper and the powerful cleaning cylinder, a sixth drive motor is installed at the outer top of the powerful cleaning cylinder, a second stirring rod is installed at the inner top of the powerful cleaning cylinder, multiple groups of second stirring blades are installed at both ends of the outer wall of the second stirring rod, a connecting rod is installed at the lower part of the second stirring rod, and U-shaped scrapers are installed on both sides of the connecting rod.

[0011] Preferably, the label air separation tube is inclined downward, a separation tank is installed at the lower part of the other end of the label air separation tube, two groups of air ducts are installed on the upper side of the outer wall of the label air separation tube, a fan is installed at the other end of the air duct, and an air outlet duct is installed on the lower side of the outer wall of the label air separation tube.

[0012] Preferably, a water outlet pipe is installed at the outer bottom of the powerful cleaning cylinder, a filter is installed at the connection between the water outlet pipe and the powerful cleaning cylinder, and a second valve is installed at the other end of the water outlet pipe.

[0013] Preferably, the powerful cleaning cylinder is connected to the label air separation tube via a discharge pipe, the discharge pipe is inclined downward, and a third valve is installed at one end of the discharge pipe close to the powerful cleaning cylinder.

[0014] Preferably, a processing method of a PET plastic crushing pretreatment device comprises the following steps:

[0015] Step 1: Place the PET plastic bottle on the rack and transport it through the conveying assembly. After the PET plastic bottle is transported to the other side of the conveying assembly, the PET plastic bottle will fall into the bottle washing cylinder under the action of gravity and be washed to remove impurities on the surface of the PET plastic bottle;

[0016] Step 2: After the preliminary cleaning of the PET plastic bottles is completed, the second rotating shaft can be rotated under the action of the second driving motor, and the bottle washing cylinder can be driven to rotate through the fixing action of the clamping plate, and the liquid in the bottle washing cylinder and the PET plastic bottles are poured into the collection box;

[0017] Step 3: The filter plate can separate the liquid in the bottle washing cylinder from the PET plastic bottles, and the PET plastic bottles are left on the filter plate. The filter plate is driven to rotate by the hydraulic cylinder, and the PET plastic bottles enter the crushing box through the discharge port and the second guide plate;

[0018] Step 4: The PET plastic bottle can be crushed into PET plastic bottle flakes by the first crushing wheel and the second crushing wheel. The crushed PET plastic bottle flakes fall on the inclined plate and enter the powerful cleaning cylinder through the discharge hopper;

[0019] Step 5: The PET plastic bottle flakes are cleaned by a strong cleaning cylinder to separate the sludge, sand, adhesive and paper scraps attached to the bottle flakes from the bottle flakes. Finally, the bottle flakes fall into the label air separation tube through the discharge pipe;

[0020] Step 6: Due to the reverse movement of the airflow generated by the fan and the bottle flakes inside the label air separation tube, the label paper and the bottle flakes can be separated. The separated label paper and bottle flakes fall into the separation tank. Using the principle of buoyancy, label paper, PVC bottle caps and bottle flakes of different densities can be separated.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) According to the present invention, under the action of the gravity of the PET plastic bottle chips themselves, the PET plastic bottle chips can enter the interior of the powerful cleaning cylinder through the discharge hopper, and then the first valve is closed, and the second stirring rod is driven by the sixth driving motor to rotate so that the second stirring blade can rotate synchronously, so that the PET plastic bottle chips can be cleaned, and the connecting rod is driven by the sixth driving motor to rotate so that the U-shaped scraper can rotate synchronously, and the PET plastic bottle chips accumulated at the bottom of the powerful cleaning cylinder can be driven to rotate, so as to achieve full cleaning of the PET plastic bottle chips, and the sludge, sand, adhesive and paper scraps attached to the bottle chips are separated from the bottle chips, and the second valve is opened to discharge the liquid in the powerful cleaning cylinder through the outlet pipe, and the PET plastic bottle chips can be prevented from being discharged through the filter screen, and then the third valve is opened, and the connecting rod is driven by the sixth driving motor to rotate so that the U-shaped scraper can rotate synchronously, and the PET plastic bottle chips can be cleaned by the third valve. The PET plastic bottle flakes accumulated at the bottom can be discharged into the discharge pipe through the U-shaped scraper, and finally the bottle flakes fall into the label air separation tube through the discharge pipe. The fan is turned on, and the airflow generated by the fan forms a reverse motion with the bottle flakes in the label air separation tube, so that the label paper and the bottle flakes can be separated. The separated label paper and bottle flakes fall into the separation tank, and the label paper, PVC bottle caps and bottle flakes of different densities can be separated by utilizing the buoyancy principle, thereby realizing the PET plastic crushing pretreatment operation, solving the problem that in the existing PET plastic bottle processing and separation process, manual holding of the plastic bottle is required to unscrew the bottle cap through the existing separation equipment, the dirt on the surface of the recycled PET plastic bottle affects the health of the operators, the manual holding of the plastic bottle takes a long time to work, and the work efficiency is low, and batch separation operations cannot be carried out, which affects the processing efficiency of PET plastic bottles.

[0023] (2) The first rotating shaft is driven to rotate by the first driving motor, and the transmission connection of the belt can drive multiple groups of conveying rollers to rotate synchronously, so as to realize the transportation of PET plastic bottles. The friction between the conveying roller and the PET plastic bottle can be increased by the rubber sleeve to ensure that the material can be accurately positioned and transmitted. At the same time, the viscosity and softness of the rubber sleeve can increase the contact area between the conveying roller and the material, further improving the friction. The baffle can prevent the PET plastic bottle from falling during transportation. Under the action of the first material guide plate, the PET plastic bottle will fall into the bottle washing barrel. The third driving motor drives the first stirring rod and the first stirring blade to rotate, so as to clean the PET plastic bottle in the bottle washing barrel and remove impurities on the surface of the PET plastic bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the bottle washing cylinder of the present invention;

[0026] Figure 3It is a front cross-sectional structural schematic diagram of the conveying assembly and the bottle washing cylinder of the present invention;

[0027] Figure 4 It is a partial front cross-sectional structural schematic diagram of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the crushing box of the present invention;

[0029] Figure 6 It is a schematic diagram of part of the internal structure of the present invention;

[0030] In the figure: 1, frame; 2, conveying assembly; 201, conveying roller; 202, first driving motor; 203, first rotating shaft; 204, belt; 205, rubber sleeve; 3, first guide plate; 4, bottle washing cylinder; 401, U-shaped support frame; 402, second driving motor; 403, second rotating shaft; 404, clamping plate; 405, third driving motor; 406, first stirring rod; 407, first stirring blade; 5, collecting box; 501, filter plate; 502, hydraulic cylinder; 503, fixing plate; 504, bearing; 505, discharge port; 6, second guide plate; 7, crushing box; 701, first crushing Crushing wheel; 702, fourth drive motor; 703, second crushing wheel; 704, fifth drive motor; 705, tilting plate; 706, discharge hopper; 707, extension plate; 8, strong cleaning cylinder; 801, first valve; 802, sixth drive motor; 803, second stirring rod; 804, second stirring blade; 805, connecting rod; 806, U-shaped scraper; 807, water outlet pipe; 808, filter; 809, second valve; 810, discharge pipe; 811, third valve; 9, label air separation tube; 901, air duct; 902, fan; 903, air outlet pipe; 10, separation tank; 11, baffle. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] See also Figure 1-6An embodiment of the present invention is a PET plastic crushing pretreatment equipment, comprising a frame 1, a conveying assembly 2 is installed on the upper part of the frame 1, a first guide plate 3 is installed on the upper part of one side of the frame 1, the first guide plate 3 is inclined downward, a bottle washing cylinder 4 is installed on the lower part of the other side of the first guide plate 3, a collecting box 5 is installed on one side of the bottle washing cylinder 4, a second guide plate 6 is installed on one side of the upper part of the collecting box 5, the second guide plate 6 is inclined downward, a crushing box 7 is installed on the lower part of the other side of the second guide plate 6, a discharge hopper 706 is installed on the lower part of one side of the crushing box 7, a strong cleaning cylinder 8 is installed on the other side of the discharge hopper 706, a label air separation tube 9 is installed on the lower part of the other side of the strong cleaning cylinder 8, and baffles 11 are installed on both sides of the top of the frame 1.

[0033] See also Figure 2 and Figure 3 The conveying assembly 2 includes multiple groups of conveying rollers 201, which are evenly distributed on the upper part of the frame 1. A first driving motor 202 is installed on one side of one end of the frame 1. Both ends of the conveying rollers 201 are fixedly connected to the frame 1 through a first rotating shaft 203. A belt 204 is transmission-connected between the first rotating shaft 203 at the same end, and a rubber sleeve 205 is installed on the outer wall of the conveying roller 201.

[0034] Place the PET plastic bottle between two adjacent conveying rollers 201, start the first drive motor 202, and drive the first rotating shaft 203 to rotate through the first drive motor 202. The transmission connection of the belt 204 can drive multiple groups of conveying rollers 201 to rotate synchronously, thereby realizing the transportation of the PET plastic bottle. The rubber sleeve 205 can increase the friction between the conveying roller 201 and the PET plastic bottle to ensure that the material can be accurately positioned and transmitted. At the same time, the viscosity and softness of the rubber sleeve 205 can increase the contact area between the conveying roller 201 and the material, further improving the friction. The baffle 11 can prevent the PET plastic bottle from falling during transportation.

[0035] See also Figure 2 A U-shaped support frame 401 is installed at the lower part of the bottle washing cylinder 4, and a second driving motor 402 is installed on the outer wall of both ends of the U-shaped support frame 401, and a second rotating shaft 403 is installed on the output shaft of the second driving motor 402. A clamping plate 404 is installed at the other end of the second rotating shaft 403, and the clamping plate 404 is fixedly connected to the outer wall of the bottle washing cylinder 4. A third driving motor 405 is installed at the outer bottom of the bottle washing cylinder 4, and a first stirring rod 406 is installed at the inner bottom of the bottle washing cylinder 4. A plurality of first stirring blades 407 are installed at both ends of the outer wall of the first stirring rod 406. Under the action of the first guide plate 3, the PET plastic bottle will fall into the bottle washing cylinder 4, and the third driving motor 405 drives the first stirring rod 406 and the first stirring blade 407 to rotate, so that the PET plastic bottle inside the bottle washing cylinder 4 can be cleaned and impurities on the surface of the PET plastic bottle can be removed.

[0036] See also Figure 5 The upper hinge inside the collecting box 5 is connected to the filter plate 501, and the two ends of the lower part of the other side of the filter plate 501 are installed with hydraulic cylinders 502 through the collecting box 5. The two ends of the top of the hydraulic cylinder 502 are installed with fixed plates 503, and a bearing 504 is installed between the two fixed plates 503. The top of the bearing 504 is fixedly connected to the bottom of the filter plate 501, and a discharge port 505 is provided at the top of one side of the collecting box 5.

[0037] See also Figure 6 A first crushing wheel 701 is installed on both sides of the upper inner part of the crushing box 7, a fourth drive motor 702 is installed on both sides of one end of the outer part of the crushing box 7, a second crushing wheel 703 is installed on both ends of the lower inner part of the crushing box 7, a fifth drive motor 704 is installed on both ends of one side of the outer part of the crushing box 7, an inclined plate 705 is installed on the inner bottom of the crushing box 7, and extension plates 707 are installed on one side and both ends of the top of the crushing box 7.

[0038] After the preliminary cleaning of the PET plastic bottles is completed, the second driving motor 402 is started, and the second rotating shaft 403 is driven to rotate by the second driving motor 402. The fixing effect of the clamping plate 404 can drive the bottle washing barrel 4 to rotate, and the liquid inside the bottle washing barrel 4 and the PET plastic bottles are poured into the collecting box 5. The liquid inside the bottle washing barrel 4 and the PET plastic bottles are separated by the filter plate 501, and the PET plastic bottles are left above the filter plate 501. Through the joint action of the fixing plate 503 and the bearing 504, the filter plate 501 can be driven to rotate by the extension of the hydraulic cylinder 502, and the PET plastic bottles enter the crushing box 7 through the discharge port 505 and the second guide plate 6. The first crushing wheel 701 can be driven to rotate by the fourth driving motor 702, and the second crushing wheel 703 can be driven to rotate by the fifth driving motor 704. The PET plastic bottles can be crushed into PET plastic bottle flakes by the first crushing wheel 701 and the second crushing wheel 703, and the crushed PET plastic bottle flakes fall above the inclined plate 705.

[0039] See also Figure 4 and Figure 6 A first valve 801 is installed at the connection between the discharge hopper 706 and the powerful cleaning cylinder 8, a sixth drive motor 802 is installed at the outer top of the powerful cleaning cylinder 8, a second stirring rod 803 is installed at the inner top of the powerful cleaning cylinder 8, and multiple groups of second stirring blades 804 are installed at both ends of the outer wall of the second stirring rod 803. A connecting rod 805 is installed at the lower part of the second stirring rod 803, and U-shaped scrapers 806 are installed on both sides of the connecting rod 805.

[0040] Under the action of the gravity of the PET plastic bottle flakes themselves, the PET plastic bottle flakes can enter the interior of the powerful cleaning cylinder 8 through the discharge hopper 706, and then the first valve 801 is closed. The second stirring rod 803 is driven to rotate by the sixth drive motor 802, so that the second stirring blade 804 can rotate synchronously, and the PET plastic bottle flakes can be cleaned. The connecting rod 805 is driven to rotate by the sixth drive motor 802 to make the U-shaped scraper 806 rotate synchronously, which can drive the PET plastic bottle flakes accumulated at the bottom of the powerful cleaning cylinder 8 to rotate, thereby achieving sufficient cleaning of the PET plastic bottle flakes and separating the sludge, sand, glue and paper scraps attached to the bottle flakes from the bottle flakes.

[0041] See also Figure 4 and Figure 6 The label air separation tube 9 is tilted downward, a separation tank 10 is installed at the lower part of the other end of the label air separation tube 9, two groups of air ducts 901 are installed on the upper side of the outer wall of the label air separation tube 9, a fan 902 is installed on the other end of the air duct 901, and an air outlet duct 903 is installed on the lower side of the outer wall of the label air separation tube 9.

[0042] See also Figure 4 A water outlet pipe 807 is installed at the outer bottom of the powerful cleaning cylinder 8, a filter screen 808 is installed at the connection between the water outlet pipe 807 and the powerful cleaning cylinder 8, and a second valve 809 is installed at the other end of the water outlet pipe 807.

[0043] See also Figure 4 The powerful cleaning cylinder 8 is connected to the label air selection tube 9 through a discharge pipe 810. The discharge pipe 810 is inclined downward. A third valve 811 is installed at one end of the discharge pipe 810 close to the powerful cleaning cylinder 8.

[0044] By opening the second valve 809, the liquid inside the strong cleaning cylinder 8 can be discharged through the outlet pipe 807, and the PET plastic bottle flakes can be prevented from being discharged through the filter screen 808. Then, the third valve 811 is opened, and the sixth driving motor 802 drives the connecting rod 805 to rotate, so that the U-shaped scraper 806 can rotate synchronously. The PET plastic bottle flakes accumulated at the bottom can be discharged into the discharge pipe 810 through the U-shaped scraper 806, and finally the bottle flakes fall into the label air separation tube 9 through the discharge pipe 810. The fan 902 is turned on. Due to the reverse motion of the airflow generated by the fan 902 and the bottle flakes in the label air separation tube 9, the label paper and the bottle flakes can be separated. The separated label paper and bottle flakes fall into the separation tank 10. The label paper and the bottle flakes of different densities can be separated from the bottle flakes by utilizing the buoyancy principle, thereby realizing the PET plastic crushing pretreatment operation.

[0045] See also Figure 1-6 , a processing method of PET plastic crushing pretreatment equipment, comprising the following steps:

[0046] Step 1: Place the PET plastic bottle on the rack 1, and transport the PET plastic bottle through the conveying assembly 2. After the PET plastic bottle is transported to the other side of the conveying assembly 2, the PET plastic bottle will fall into the bottle washing cylinder 4 under the action of gravity and be washed to remove impurities on the surface of the PET plastic bottle;

[0047] Step 2: After the preliminary cleaning of the PET plastic bottles is completed, the second rotating shaft 403 can be rotated under the action of the second driving motor 402, and the bottle washing cylinder 4 can be driven to rotate through the fixing action of the clamping plate 404, and the liquid in the bottle washing cylinder 4 and the PET plastic bottles are poured into the collection box 5;

[0048] Step 3: The liquid in the bottle washing cylinder 4 and the PET plastic bottles can be separated by the filter plate 501, and the PET plastic bottles are left on the filter plate 501. The filter plate 501 is driven to rotate by the hydraulic cylinder 502, and the PET plastic bottles enter the crushing box 7 through the discharge port 505 and the second guide plate 6;

[0049] Step 4: The PET plastic bottle can be crushed into PET plastic bottle flakes by the first crushing wheel 701 and the second crushing wheel 703. The crushed PET plastic bottle flakes fall on the inclined plate 705 and enter the strong cleaning cylinder 8 through the discharge hopper 706;

[0050] Step 5: The PET plastic bottle flakes are cleaned by the strong cleaning cylinder 8, and the sludge, sand, adhesive and paper scraps attached to the bottle flakes are separated from the bottle flakes. Finally, the bottle flakes fall into the label air separation tube 9 through the discharge pipe 810;

[0051] Step six: Due to the reverse movement of the airflow generated by the fan 902 and the bottle flakes inside the label air separation tube 9, the label paper and the bottle flakes can be separated. The separated label paper and bottle flakes fall into the separation tank 10. By utilizing the buoyancy principle, label paper, PVC bottle caps and bottle flakes of different densities can be separated.

[0052] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A PET plastic crushing pretreatment device, comprising a frame (1), characterized in that: A conveying assembly (2) is installed on the upper part of the frame (1); a first material guide plate (3) is installed on the upper part of one side of the frame (1); the first material guide plate (3) is tilted downward; a bottle washing cylinder (4) is installed on the lower part of the other side of the first material guide plate (3); a collecting box (5) is installed on one side of the bottle washing cylinder (4); a second material guide plate (6) is installed on one side of the upper part of the collecting box (5); the second material guide plate (6) is tilted downward; a crushing box (7) is installed on the lower part of the other side of the second material guide plate (6); a discharge hopper (706) is installed on the lower part of one side of the crushing box (7); a strong cleaning cylinder (8) is installed on the other side of the discharge hopper (706); a label air separation tube (9) is installed on the lower part of the other side of the strong cleaning cylinder (8); baffles (11) are installed on both sides of the top of the frame (1).

2. A PET plastic crushing pretreatment equipment according to claim 1, characterized in that: The conveying assembly (2) comprises a plurality of groups of conveying rollers (201), wherein the conveying rollers (201) are evenly distributed on the upper part of the frame (1), a first driving motor (202) is installed on one side of one end of the frame (1), both ends of the conveying rollers (201) are fixedly connected to the frame (1) via a first rotating shaft (203), a belt (204) is transmission-connected between the first rotating shaft (203) at the same end, and a rubber sleeve (205) is installed on the outer wall of the conveying roller (201).

3. A PET plastic crushing pretreatment equipment according to claim 2, characterized in that: A U-shaped support frame (401) is installed at the lower part of the bottle washing cylinder (4), and a second driving motor (402) is installed on the outer walls of both ends of the U-shaped support frame (401). A second rotating shaft (403) is installed on the output shaft of the second driving motor (402), and a clamping plate (404) is installed at the other end of the second rotating shaft (403), and the clamping plate (404) is fixedly connected to the outer wall of the bottle washing cylinder (4). A third driving motor (405) is installed at the outer bottom of the bottle washing cylinder (4), and a first stirring rod (406) is installed at the inner bottom of the bottle washing cylinder (4), and a plurality of first stirring blades (407) are installed at both ends of the outer wall of the first stirring rod (406).

4. A PET plastic crushing pretreatment equipment according to claim 3, characterized in that: The upper hinge inside the collecting box (5) is connected to a filter plate (501), and the two ends of the lower part of the other side of the filter plate (501) are equipped with a hydraulic cylinder (502) through the collecting box (5), and the two ends of the top of the hydraulic cylinder (502) are equipped with a fixing plate (503), and a bearing (504) is installed between the two fixing plates (503), and the top of the bearing (504) is fixedly connected to the bottom of the filter plate (501), and a discharge port (505) is provided at the top of one side of the collecting box (5).

5. A PET plastic crushing pretreatment equipment according to claim 4, characterized in that: A first crushing wheel (701) is installed on both sides of the upper inner part of the crushing box (7), a fourth drive motor (702) is installed on both sides of an outer end of the crushing box (7), a second crushing wheel (703) is installed on both ends of the lower inner part of the crushing box (7), a fifth drive motor (704) is installed on both ends of one side of the outer side of the crushing box (7), an inclined plate (705) is installed on the inner bottom of the crushing box (7), and extension plates (707) are installed on one side and both ends of the top of the crushing box (7).

6. A PET plastic crushing pretreatment equipment according to claim 5, characterized in that: A first valve (801) is installed at the connection between the discharge hopper (706) and the powerful cleaning cylinder (8), a sixth drive motor (802) is installed at the outer top of the powerful cleaning cylinder (8), a second stirring rod (803) is installed at the inner top of the powerful cleaning cylinder (8), a plurality of groups of second stirring blades (804) are installed at both ends of the outer wall of the second stirring rod (803), a connecting rod (805) is installed at the lower part of the second stirring rod (803), and U-shaped scrapers (806) are installed on both sides of the connecting rod (805).

7. A PET plastic crushing pretreatment equipment according to claim 6, characterized in that: The label air separation tube (9) is tilted downward, a separation tank (10) is installed at the lower part of the other end of the label air separation tube (9), two groups of air ducts (901) are installed on the upper side of the outer wall of the label air separation tube (9), a fan (902) is installed at the other end of the air duct (901), and an air outlet duct (903) is installed on the lower side of the outer wall of the label air separation tube (9).

8. A PET plastic crushing pretreatment equipment according to claim 7, characterized in that: A water outlet pipe (807) is installed at the outer bottom of the powerful cleaning cylinder (8), a filter screen (808) is installed at the connection between the water outlet pipe (807) and the powerful cleaning cylinder (8), and a second valve (809) is installed at the other end of the water outlet pipe (807).

9. A PET plastic crushing pretreatment equipment according to claim 8, characterized in that: The powerful cleaning cylinder (8) is connected to the label air separation tube (9) via a discharge pipe (810), the discharge pipe (810) is inclined downward, and a third valve (811) is installed at one end of the discharge pipe (810) close to the powerful cleaning cylinder (8).

10. A processing method of a PET plastic crushing pretreatment device, implemented based on the PET plastic crushing pretreatment device according to claim 9, characterized in that: The following steps are involved: Step 1: placing the PET plastic bottle on the top of the rack (1), and transporting the PET plastic bottle through the conveying component (2). After the plastic bottle is transported to the other side of the conveying component (2), the PET plastic bottle will fall into the bottle washing cylinder (4) under the action of gravity and be cleaned to remove impurities on the surface of the PET plastic bottle; Step 2: After the PET plastic bottles are initially cleaned, the second rotating shaft (403) can be rotated under the action of the second driving motor (402), and the bottle washing cylinder (4) can be driven to rotate through the fixing action of the clamping plate (404), and the liquid and PET plastic bottles in the bottle washing cylinder (4) are poured into the collection box (5); Step 3: The liquid in the bottle washing cylinder (4) and the PET plastic bottles can be separated by the filter plate (501), and the PET plastic bottles are left above the filter plate (501). The filter plate (501) is driven to rotate by the hydraulic cylinder (502), and the PET plastic bottles enter the crushing box (7) through the discharge port (505) and the second guide plate (6); Step 4: The PET plastic bottle can be crushed into PET plastic bottle flakes by the first crushing wheel (701) and the second crushing wheel (703). The crushed PET plastic bottle flakes fall on the inclined plate (705) and enter the strong cleaning cylinder (8) through the discharge hopper (706); Step 5: The PET plastic bottle flakes are cleaned by a strong cleaning cylinder (8) to separate the sludge, sand, glue and paper scraps attached to the bottle flakes from the bottle flakes, and finally the bottle flakes fall into the label air separation tube (9) through the discharge pipe (810); Step 6: Due to the reverse movement of the airflow generated by the fan (902) and the bottle flakes inside the label air separation tube (9), the label paper and the bottle flakes can be separated. The separated label paper and bottle flakes fall into the separation tank (10). By utilizing the buoyancy principle, the label paper, PVC bottle caps and bottle flakes of different densities can be separated.

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