Bidirectional cleaning equipment for PET (Polyethylene Terephthalate) bottle flakes and use method of bidirectional cleaning equipment

Abstract

The invention discloses PET bottle flake bidirectional cleaning equipment and a using method thereof, and relates to the technical field of plastic recycling, the PET bottle flake bidirectional cleaning equipment comprises a sealing cover, a discharging pipe with a conical bottom is inserted into the sealing cover in a penetrating mode, and a cleaning cylinder is connected to the bottom of the sealing cover in a clamped mode. According to the PET bottle chip cleaning device, various stains on the surfaces of PET bottle chips can be comprehensively and efficiently removed through the combination of the roller body, the spiral blades and the ultrasonic generator, oily stains and special chemical substance residues are reduced, the cleaning quality of the bottle chips is improved, additional treatment steps do not need to be added, cleaning operation is simple, and the cleaning efficiency is high. The position of the roller body is adjusted and the auxiliary blocks are replaced according to different sizes of bottle flakes, the applicability of equipment in use is improved, pollutants such as organic matters and heavy metals in wastewater can be removed through dual treatment of the chemical treatment area and the biological treatment area, the treated wastewater is discharged after reaching the standard, and thus the influence on the surrounding environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic recycling, and in particular to a two-way cleaning device for PET bottle flakes and a use method thereof. Background Art

[0002] PET bottle flakes, whose full name is bottle-grade polyethylene terephthalate resin chips, are mainly made of purified terephthalic acid (PTA) and ethylene glycol (MEG) as raw materials, with a third monomer, isophthalic acid (IPA), colorants and heat stabilizers, and are polymerized under the action of a catalyst.

[0003] For example, Chinese patent CN111037785B discloses a PET bottle flake washing machine, which includes an unpacking device, a floating washing device, a rinsing device, a flushing device and a drying device. The semi-clean bottle flakes are unpacked by the unpacking machine, and sent to the floating washing device by the unpacking conveyor belt to remove metal dirt and other high-density impurities in the PET bottle flakes. The washed PET bottle flakes are automatically salvaged and sent to the rinsing device by the second blower. The impurities such as glue attached to the PET bottle flakes are removed by rinsing with high-temperature alkaline water. After automatic salvage, they are sent to the hot water flushing device by the third feeding blower, and the PET bottle flakes are thoroughly cleaned by high-temperature and high-pressure hot water.

[0004] In the above patent, although the rinsing tank and the booster pump solve the problem of poor cleaning effect of the existing recycling process and the substandard cleanliness of the obtained plastic fragments, special stains, including long-term attached oily stains and special chemical residues, are difficult to clean thoroughly and require additional steps for processing, which increases the complexity of bottle flake cleaning. Summary of the invention

[0005] The object of the present invention is to provide a two-way cleaning device for PET bottle flakes and a method for using the same, so as to solve the problem raised in the above-mentioned background technology that special stains, including long-term attached oily stains and special chemical residues, are difficult to clean thoroughly and require additional steps for treatment, which increases the complexity of bottle flake cleaning.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a two-way cleaning device for PET bottle flakes, comprising a sealing cover, a discharge pipe with a conical bottom inserted through the inside of the sealing cover, a cleaning cylinder snap-fitted to the bottom of the sealing cover, an auxiliary block snap-fitted to the inner wall of the cleaning cylinder, one side of the auxiliary block is W-shaped, a limiting piece is inserted on the other side of the auxiliary block, and one side of the limiting piece is snap-fitted to the outer ring surface of the cleaning cylinder, and two roller assemblies are installed inside the cleaning cylinder.

[0007] Preferably, the drum assembly includes a top cover, a drum body and an ultrasonic generator, the outer annular surface of the top cover is engaged with the inner wall of the drum body, the outer annular surface of the drum body is fixedly connected with a spiral blade, the bottom of the drum body is fixedly connected with a bevel gear three, the bottom of the bevel gear three is rotatably connected with a support member, the inner annular surface of the drum body is fixedly connected with a U-shaped frame, one side of the U-shaped frame is rotatably connected with a bevel gear two, one end of the shaft portion of the bevel gear two passes through the side wall of the U-shaped frame and is fixedly connected to the ultrasonic generator, the ultrasonic generator is rotatably connected to the U-shaped frame, one side of the bevel gear two is rotatably connected with a reinforcement plate, one side of the reinforcement plate is fixedly connected to the inner annular surface of the drum body, the bevel gear two is meshed with a bevel gear one, the bottom of the bevel gear one is fixedly connected with a motor one, and the bottom of the motor one is fixedly connected to the inner wall of the drum body.

[0008] Preferably, a guide frame is slidably connected to the outer side of the support member, the bottom of the guide frame is fixedly connected to the bottom of the inner cavity of the cleaning cylinder, one side of the support member is fixedly connected to a support frame, the support frame and the guide frame are slidably connected, a flushing pipe is arranged above the guide frame, one side of the flushing pipe is fixedly connected to a nozzle, one side of the flushing pipe passes through the side wall of the cleaning cylinder, and a semicircular pipe is connected between the outer annular surfaces of the two flushing pipes.

[0009] Preferably, one side of the support frame is fixedly connected to motor 2, the output shaft of motor 2 is fixedly connected to bevel gear 4, the bottom of bevel gear 4 is meshed with bevel gear 3, the outer ring surface of the cleaning cylinder is fixedly connected to motor 3, the output shaft of motor 3 is fixedly connected to a bidirectional lead screw, one end of the bidirectional lead screw is rotatably connected to the guide frame, and the bidirectional lead screw and the support frame are connected by a thread.

[0010] Preferably, a rectangular hole is opened on the top of the guide frame, a recovery bucket is fixedly connected to the top of the guide frame, an auxiliary pipe is fixedly connected to the bottom of the recovery bucket, and the auxiliary pipe passes through the bottom side wall of the cleaning cylinder and is fixedly connected to a centrifugal dehydrator.

[0011] Preferably, the water outlet of the centrifugal dehydrator is fixedly connected to a guide pipe, one end of the guide pipe is fixedly connected to a treatment box, the top of the treatment box is fixedly connected to a water pump, the water inlet of the water pump is fixedly connected to the cleaning cylinder, and the drain outlet of the water pump is fixedly connected to the treatment box.

[0012] Preferably, a guide plate is fixedly connected to the bottom of the inner cavity of the treatment box, a drainage tube is inserted through the guide plate, a one-way valve is installed at one end of the drainage tube, a filter is fixedly connected to one side of the guide plate, a chemical treatment area is provided below the filter, an agitator is provided inside the chemical treatment area, and the agitator shaft of the agitator is rotatably connected to the bottom of the inner cavity of the treatment box.

[0013] Preferably, a biological treatment zone is arranged above the filter, an aeration pipe assembly is installed inside the biological treatment zone, biological filler is arranged below the aeration pipe assembly, one end of the aeration pipe assembly is fixedly connected to the inner wall of the treatment box, and the other end of the aeration pipe assembly passes through the side wall of the treatment box.

[0014] Preferably, the top of the processing box is fixedly connected to a storage box, one side of the storage box is fixedly connected to an overflow pipe, a medicine box is provided at the bottom of the overflow pipe, one side of the medicine box is fixedly connected to the storage box, and the bottom of the medicine box is fixedly connected to the processing box.

[0015] A method for using a two-way cleaning device for PET bottle flakes comprises the following steps: S1. Adjust the distance between the two roller assemblies according to the size of the PET bottle flakes to be cleaned, use the motor 3 to drive the bidirectional lead screw to rotate, so that the support member moves along the guide frame, the support frame drives the support member to move along the guide frame, and the two support members drive the two roller assemblies to move. After adjustment, install the auxiliary block in the cleaning cylinder to complete the debugging of the equipment; S2. The PET bottle flakes are fed into the space between the two roller bodies through the feeding pipe. One of the two roller bodies rotates forward and the other rotates reversely. The PET bottle flakes are pushed by the spiral blades to move downward along the spiral track while being washed. During the washing process, the nozzle on one side of the washing pipe sprays water to wash the PET bottle flakes. S3, the washed PET bottle flakes enter the centrifugal dehydrator through the recovery bucket and auxiliary pipe for dehydration, and the waste water is collected in the treatment box through the water pump and guide pipe; S4. Wastewater is discharged into the chemical treatment area between the filter and the agitator through the drainage pipe. The agitator accelerates the mixing of wastewater and reagents. The water level rises after treatment and passes through the filter into the biological treatment area. It is treated by the biological fillers in the area. The generated clean water enters the storage tank, is discharged through the overflow pipe, and is collected in an external water tank to achieve the recycling of wastewater.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, bevel gear three is rotatably connected with the support member, and the ultrasonic generator is rotatably connected with the U-shaped frame. The motor drives the bevel gear one to rotate, so that the bevel gear two and the ultrasonic generator rotate, and the position switching of the ultrasonic generator is realized. The bevel gear four drives the bevel gear three and the drum body to rotate, so that the two drum bodies rotate in opposite directions. Since the two drums rotate in opposite directions, the PET bottle flakes are pushed by the blades from two directions at the same time, and can not only move forward, but also roll continuously between the two drums, so as to be scrubbed in all directions and realize two-way cleaning. Through this cleaning method, the PET bottle flakes can be effectively cleaned on all surfaces under the action of scrubbing forces in different directions, which greatly improves the comprehensiveness of cleaning, enhances the ability to remove stubborn stains, and improves the cleaning efficiency. The combination of the drum body, the spiral blades and the ultrasonic generator can remove various stains on the surface of the PET bottle flakes in all directions and efficiently, reduce oily stains and special chemical residues, and improve the cleaning quality of the bottle flakes. No additional processing steps are required, and the cleaning operation is relatively simple.

[0017] 2. In the present invention, the support member is slidably connected to the guide frame, and the support member is fixedly connected to the support frame. The motor drives the bidirectional lead screw to rotate, so that the support frame moves along the guide frame. The support member and the drum body move with the support frame, so that the distance between the two drum bodies can be adjusted. The limit member and the auxiliary block are connected to facilitate the installation and disassembly of the auxiliary block inside the cleaning cylinder, and then the position of the drum body is adjusted and the auxiliary block is replaced according to the different sizes of PET bottle pieces, thereby increasing the applicability of the equipment when used.

[0018] 3. In the present invention, the centrifugal dehydrator is fixedly connected to the guide pipe, the water pump is fixedly connected to the cleaning cylinder, the waste water inside the centrifugal dehydrator is sent to the treatment box through the guide pipe, the water pump draws out the waste water inside the cleaning cylinder and sends it to the treatment box for collection, the flow of water is guided by the drainage pipe, and the pollutants such as organic matter and heavy metals in the waste water can be removed through the dual treatment of the chemical treatment area and the biological treatment area, so that the treated waste water meets the discharge standards, thereby reducing the impact on the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a two-way cleaning device for PET bottle flakes of the present invention; Figure 2 It is a schematic diagram of the connection between the stopper and the auxiliary block structure of a two-way cleaning device for PET bottle chips of the present invention; Figure 3 This is a schematic diagram of the installation of the guide plate structure of a two-way cleaning device for PET bottle flakes of the present invention; Figure 4 This is a schematic diagram of the installation of a medicine box structure of a two-way cleaning device for PET bottle flakes of the present invention; Figure 5This is a schematic diagram of a rectangular hole structure of a two-way cleaning device for PET bottle flakes of the present invention; Figure 6 This is a schematic diagram of the installation of a recovery bucket structure of a two-way cleaning device for PET bottle flakes of the present invention; Figure 7 This is a schematic diagram of the installation of a support frame structure of a two-way cleaning device for PET bottle chips of the present invention; Figure 8 This is a schematic diagram of the installation of the spiral blade structure of a two-way cleaning device for PET bottle flakes of the present invention; Fig. 9 It is a schematic diagram of the meshing structure of bevel gear 1 and bevel gear 2 of a bidirectional washing device for PET bottle flakes of the present invention; Fig.10 This is a schematic diagram of the change in the position state of an ultrasonic generator in use of a two-way cleaning device for PET bottle flakes of the present invention.

[0020] In the figure: 1. Sealing cover; 11. Feeding pipe; 2. Water pump; 3. Processing box; 31. Storage box; 32. Guide plate; 321. Drainage pipe; 33. Agitator; 34. Filter; 35. Aeration pipe assembly; 36. Overflow pipe; 37. Medicine box; 4. Centrifugal dehydrator; 41. Guide pipe; 5. Cleaning cylinder; 51. Drum assembly; 511. Top cover; 512. Spiral blade; 513. Drum body; 514. Ultrasonic generator; 51 5. Motor 1; 516. Bevel gear 1; 517. Bevel gear 2; 518. U-shaped frame; 519. Reinforcement plate; 52. Guide frame; 521. Rectangular hole; 53. Bevel gear 3; 54. Support member; 55. Auxiliary pipe; 56. Recovery bucket; 57. Bevel gear 4; 58. Motor 2; 59. Support frame; 591. Bidirectional lead screw; 592. Motor 3; 6. Limit member; 61. Auxiliary block; 7. Semicircular pipe; 71. Flushing pipe. DETAILED DESCRIPTION

[0021] 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 implementation regulations described 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.

[0022] Example 1: Reference Figure 1-Figure 10As shown: a two-way cleaning device for PET bottle chips, including a sealing cover 1, a feeding pipe 11 with a conical bottom is inserted through the inside of the sealing cover 1, a cleaning cylinder 5 is clamped and connected to the bottom of the sealing cover 1, an auxiliary block 61 is clamped on the inner wall of the cleaning cylinder 5, one side of the auxiliary block 61 is W-shaped, and a limiting member 6 is inserted on the other side of the auxiliary block 61, and one side of the limiting member 6 is clamped with the outer ring surface of the cleaning cylinder 5, and two roller assemblies 51 are installed inside the cleaning cylinder 5.

[0023] The drum assembly 51 includes a top cover 511, a drum body 513 and an ultrasonic generator 514. The outer ring surface of the top cover 511 is engaged with the inner wall of the drum body 513. The outer ring surface of the drum body 513 is fixedly connected with a spiral blade 512. The bottom of the drum body 513 is fixedly connected with a bevel gear 3 53. The bottom of the bevel gear 3 53 is rotatably connected with a support member 54. The inner ring surface of the drum body 513 is fixedly connected with a U-shaped frame 518. One side of the U-shaped frame 518 is rotatably connected with a bevel gear 2 517. The bevel gear 2 517 is fixedly connected with a U-shaped frame 518. One end of the shaft passes through the side wall of the U-shaped frame 518 and is fixedly connected to the ultrasonic generator 514. The ultrasonic generator 514 and the U-shaped frame 518 are rotatably connected. One side of the bevel gear 2 517 is rotatably connected to the reinforcement plate 519. One side of the reinforcement plate 519 is fixedly connected to the inner ring surface of the drum body 513. One side of the bevel gear 2 517 is meshed with a bevel gear 1 516. The bottom of the bevel gear 1 516 is fixedly connected to the output shaft of the motor 1 515. The bottom of the motor 1 515 is fixedly connected to the inner wall of the drum body 513.

[0024] A guide frame 52 is slidably connected to the outside of the support member 54, and the bottom of the guide frame 52 is fixedly connected to the bottom of the inner cavity of the cleaning cylinder 5. A support frame 59 is fixedly connected to one side of the support member 54, and the support frame 59 and the guide frame 52 are slidably connected. A flushing pipe 71 is arranged above the guide frame 52, and a plurality of nozzles are fixedly connected to one side of the flushing pipe 71. One side of the flushing pipe 71 passes through the side wall of the cleaning cylinder 5, and a semicircular pipe 7 is fixedly connected between the outer annular surfaces of the two flushing pipes 71. A motor 2 58 is fixedly connected to one side of the support frame 59, and a bevel gear 4 57 is fixedly connected to one end of the output shaft of the motor 2 58, and the bottom of the bevel gear 4 57 is meshed with the bevel gear 3 53.

[0025] In this example, the feeding tube 11 can be used to guide the PET bottle chips entering the cleaning cylinder 5, so that the bottle chips can smoothly enter between the two roller bodies 513, and the limiting member 6 can be used to limit the installation of the auxiliary block 61 on the inner wall of the cleaning cylinder 5, so as to improve the stability of the auxiliary block 61 during installation and use. The auxiliary block 61 is composed of two half blocks spliced ​​together to form a W shape after splicing. The limiting member 6 can limit the movement range of the bottle chips inside the cleaning cylinder 5, so that the PET bottle chips can move according to the set route. When the limiting member 6 is disassembled and replaced, the two half blocks can be separated and taken out from the inside of the cleaning cylinder 5 respectively. The top cover 511 can be used to seal the top of the roller body 513 to prevent water from entering the inside of the roller body 513, and the U-shaped frame 518 can be used to support one side of the ultrasonic generator 514. The motor 1 515 can provide power for the rotation of the bevel gear 1 516 force, thereby driving the bevel gear 2 517 and the ultrasonic generator 514 to rotate through the bevel gear 1 516, realizing the position adjustment of the ultrasonic generator 514, changing the use direction of the ultrasonic generator 514, making one of the two ultrasonic generators 514 in a horizontal state and the other in a vertical state, the horizontally installed ultrasonic generator 514 can make the ultrasonic energy evenly distributed in the direction of the bottle piece moving along the spiral track, and the vertically installed ultrasonic generator 514 can apply ultrasonic energy to the bottle piece from the vertical direction, making up for the energy distribution deficiency that may exist in the horizontal installation in the vertical direction. After the ultrasonic generators 514 in two directions are used in combination, the cavitation effect generated acts on the stains in different directions, so that the ultrasonic energy in the horizontal and vertical directions is superimposed and supplemented with each other, which can more quickly and thoroughly remove various stubborn stains on the surface of the bottle piece; At the same time, the guide frame 52 can support the sliding of the support member 54, and the support frame 59 can be used to support the motor 2 58 to improve the stability of the motor 2 58 when in use. The motor 2 58 is a waterproof motor. The motor 2 58 can drive the bevel gear 4 57 to rotate, thereby driving the bevel gear 3 53 and the roller body 513 to rotate through the bevel gear 4 57. The rotation directions of the two motors 2 58 are set by an external controller so that the rotation directions of the two roller bodies 513 are opposite. After entering the gap, the PET bottle pieces will be subjected to the force from the spiral blades 512 on the two roller bodies 513. Under the action of this bidirectional force, the bottle pieces will not only move along the spiral trajectory in the gap, but also roll continuously. During the operation, the nozzles on one side of the two groups of flushing pipes 71 are staggered. The water sprayed by the nozzles can ensure that the PET bottle flakes can be sprayed in all directions during the cleaning process, which can assist in washing away the stains on the surface of the bottle flakes, and can also wash away the cleaned impurities in time to prevent secondary pollution. In this process, the spiral blades 512 will continue to contact with the bottle flakes, continuously push the PET bottle flakes to move, and realize the cleaning and transportation of the PET bottle flakes. Among them, the ultrasonic generator 514 is installed at a position close to the feed end of the drum body 513, and can emit high-frequency ultrasonic waves at the initial stage of cleaning to cause cavitation of the cleaning liquid, further loosen the stubborn stains on the surface of the bottle flakes, and work synergistically with mechanical scrubbing and spraying to improve the cleaning ability of special substances.

[0026] Embodiment 2: According to Figure 1-Figure 8 As shown, the outer ring surface of the cleaning cylinder 5 is fixedly connected to a motor three 592, one end of the output shaft of the motor three 592 is fixedly connected to a bidirectional lead screw 591, one end of the bidirectional lead screw 591 is rotatably connected to the guide frame 52, and the bidirectional lead screw 591 is threadedly connected to the support frame 59, a rectangular hole 521 is provided on the top of the guide frame 52, a recovery bucket 56 is fixedly connected to the top of the guide frame 52, the bottom of the recovery bucket 56 is fixedly connected to an auxiliary pipe 55, the auxiliary pipe 55 passes through the bottom side wall of the cleaning cylinder 5 and is fixedly connected to the centrifugal dehydrator 4.

[0027] In this example, the cleaning cylinder 5 can be used to support the motor three 592, and the motor three 592 can provide power for the rotation of the bidirectional screw 591. The threaded connection between the bidirectional screw 591 and the support frame 59 can be used to drive the two support frames 59 to move along the guide frame 52, so as to realize the synchronous movement of the support member 54 and the support frame 59. When the support member 54 moves, the guide frame 52 can guide it to improve the stability of the support member 54 when moving, thereby changing the distance between the two support members 54, and then realizing the distance adjustment between the two drum bodies 513, so as to adapt to the cleaning of PET bottle flakes of different sizes. The cleaned bottle flakes can be collected and guided by the recovery bucket 56 and the auxiliary pipe 55, so that the bottle flakes can smoothly enter the centrifugal dehydrator 4 for centrifugal dehydration.

[0028] Embodiment 3: According to Figure 1-Figure 4 As shown, the water outlet of the centrifugal dehydrator 4 is fixedly connected with a guide pipe 41, one end of the guide pipe 41 is fixedly connected with a treatment box 3, the top of the treatment box 3 is fixedly connected with a water pump 2, the water inlet of the water pump 2 is fixedly connected with the cleaning cylinder 5, the drain outlet of the water pump 2 is fixedly connected with the treatment box 3, the bottom of the inner cavity of the treatment box 3 is fixedly connected with a guide plate 32, a drainage pipe 321 is inserted through the guide plate 32, one end of the drainage pipe 321 is installed with a one-way valve, one side of the guide plate 32 is fixedly connected with a filter screen 34, a chemical treatment area is provided at the bottom of the filter screen 34, and an agitator 33 is provided inside the chemical treatment area. The stirring shaft of the device 33 is rotatably connected to the bottom of the inner cavity of the treatment box 3, a biological treatment zone is arranged above the filter screen 34, an aeration pipe assembly 35 is installed inside the biological treatment zone, a biological filler is arranged below the aeration pipe assembly 35, one end of the aeration pipe assembly 35 is fixedly connected to the inner wall of the treatment box 3, the other end of the aeration pipe assembly 35 passes through the side wall of the treatment box 3, the top of the treatment box 3 is fixedly connected to the storage box 31, one side of the storage box 31 is fixedly connected to the overflow pipe 36, a medicine box 37 is arranged at the bottom of the overflow pipe 36, one side of the medicine box 37 is fixedly connected to the storage box 31, and the bottom of the medicine box 37 is fixedly connected to the treatment box 3.

[0029] In this embodiment, the guide tube 41 can be used to connect the treatment box 3 with the centrifugal dehydrator 4, so that the wastewater collected by the centrifugal dehydrator 4 during operation can be sent to the treatment box 3 for treatment through the one-way valve at the end of the guide tube 41. The water pump 2 can accelerate the discharge of wastewater inside the cleaning cylinder 5 into the treatment box 3. The guide plate 32 can divide the storage space inside the treatment box 3, so that the wastewater entering the treatment box 3 is preliminarily buffered and stored, and then guided into the chemical treatment area through the drainage tube 321. The medicine box 37 can transport the liquid medicine in the chemical treatment area. Accelerate the sedimentation of wastewater. As the sedimentation increases, the water level gradually rises, and the filter 34 can intercept the sedimentation to prevent it from entering the biological treatment area above. The aeration pipe assembly 35 is connected to the external air compressor to ensure the normal use of the biological filler. The biological filler is used to decompose the wastewater, which can further improve the treatment effect of the wastewater. The clean water produced after treatment can be collected in the storage box 31 and then discharged through the overflow pipe 36. The sludge pump is used to regularly discharge the sediment inside the chemical treatment area to ensure the normal use of the treatment box 3.

[0030] The method of use and working principle of the device are as follows: first, the two-way screw 591 is driven to rotate by the motor 3 592, and the support frame 59 moves along the guide frame 52 through the thread of the two-way screw 591, so that the two support members 54 are close to or away from each other, and the spacing between the two roller assemblies 51 is adjusted. After adjustment, the end of the limiter 6 passes through the cleaning cylinder 5 and is plugged into the auxiliary block 61 to achieve the installation of the auxiliary block 61, and is sent into the semicircular pipe 7 through the external water source, enters the two flushing pipes 71 through the semicircular pipe 7 and then is sprayed out through the nozzle, and the motor 2 58 is used to drive the bevel gear 4 57 to rotate, and the bevel gear 4 57 drives the bevel gear 3 53 to rotate, and the roller assembly 5 1 rotates on the top of the support member 54, one of the two roller assemblies 51 rotates forward and the other rotates reversely, and then the use direction of one of the ultrasonic generators 514 is adjusted, and the motor 1 515 drives the bevel gear 1 516 to rotate, and the bevel gear 1 516 drives the bevel gear 2 517 to rotate, and the bevel gear 2 517 and the ultrasonic generator 514 rotate synchronously, so that the ultrasonic generator 514 is adjusted from a horizontal state to a vertical state. At this time, one of the two ultrasonic generators 514 is used in the horizontal direction and the other is used in the vertical direction, and the use direction of the ultrasonic generator 514 is adjusted, so that the two ultrasonic generators 514 can be used in combination in different directions; PET bottle flakes enter the gap between the two roller bodies 513 through the feed tube 11. When the roller bodies 513 rotate, the bottle flakes are pushed by the spiral blades 512 and move along the spiral track from the feed port to the discharge port. Since the two roller bodies 513 rotate in opposite directions, the bottle flakes are pushed by the spiral blades 512 in two directions at the same time. They can not only move along the predetermined route, but also roll continuously between the two roller bodies 513, so as to be scrubbed in all directions. The horizontally installed ultrasonic generator 514 can evenly distribute the ultrasonic energy in the direction in which the bottle flakes move along the spiral track. Since the bottle flakes mainly move along the spiral path in the cleaning cylinder 5, the horizontally installed ultrasonic generator 514 can ensure During this moving process, all parts of the bottle pieces are continuously and evenly subjected to the cavitation effect of ultrasound in the horizontal direction. The vertically installed ultrasonic generator 514 can apply ultrasonic energy to the bottle pieces in the vertical direction, making up for the insufficient energy distribution in the vertical direction when installed horizontally. In particular, for some bottle pieces with heavy stains attached to the bottom or sides due to gravity, the vertical ultrasonic impact can more effectively loosen and remove these stains, so that the bottle pieces can also be fully cleaned in the vertical direction. The cavitation effect generated by the ultrasonic generators 514 installed in different directions acts on the stains in different directions. The ultrasonic energies in the two directions are superimposed and supplemented with each other, so that various stubborn stains on the surface of the bottle pieces can be removed more quickly and thoroughly. During the washing process of the bottle chips, the water sprayed from the washing pipe 71 can continuously wash the bottle chips. A part of the waste water generated by the washing enters the recovery bucket 56 along with the bottle chips, and the other part is collected at the bottom of the inner cavity of the washing cylinder 5. The waste water inside the washing cylinder 5 is pumped out by the water pump 2 and sent to the processing box 3. The one-way valve on the guide pipe 41 is opened, and the waste water collected by the centrifugal dehydrator 4 from the bottle chips can be sent to the processing box 3. The wastewater enters the buffer zone surrounded by the treatment box 3 and the guide plate 32 for buffering. The one-way valve on one side of the drainage pipe 321 is opened to allow the wastewater to enter the chemical treatment area between the agitator 33 and the filter screen 34 after being guided through the drainage pipe 321. The one-way valve at the bottom of the medicine box 37 is opened to add sodium sulfide solution to the chemical treatment area. The agitator 33 stirs the wastewater to accelerate the rapid reaction of heavy metal ions in the wastewater with the precipitant to generate insoluble precipitates, which accumulate at the bottom of the pool. As the precipitate increases, the liquid level of the wastewater above the precipitate gradually moves up. At this time, the wastewater passes through the filter screen 34 and enters the biological treatment area above the filter screen 34. In the treatment area, biological fillers are arranged above the filter screen 34, including aerobic bacteria and anaerobic bacteria. The aeration pipe assembly 35 is connected to an external air compressor. The aeration volume is controlled by adjusting the output power of the air compressor, so that the organic matter remaining in the wastewater can be synergistically decomposed under aerobic and anaerobic environments. Anaerobic bacteria first decompose complex organic matter into small molecules, and aerobic bacteria further oxidize them into carbon dioxide and water, thereby achieving efficient removal of organic matter. The purified water rises to the storage box 31, is discharged through the overflow pipe 36, and is collected in an external water tank to achieve recycling of wastewater.

[0031] 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 two-way cleaning device for PET bottle flakes, comprising a sealing cover (1), characterized in that: A discharge pipe (11) with a conical bottom is inserted through the inside of the sealing cover (1), a cleaning cylinder (5) is snap-fitted to the bottom of the sealing cover (1), an auxiliary block (61) is snap-fitted to the inner wall of the cleaning cylinder (5), one side of the auxiliary block (61) is W-shaped, a limiting member (6) is inserted into the other side of the auxiliary block (61), and one side of the limiting member (6) is snap-fitted to the outer annular surface of the cleaning cylinder (5), and two roller assemblies (51) are installed inside the cleaning cylinder (5).

2. The two-way cleaning equipment for PET bottle flakes according to claim 1 is characterized in that: The roller assembly (51) comprises a top cover (511), a roller body (513) and an ultrasonic generator (514); the outer annular surface of the top cover (511) is engaged with the inner wall of the roller body (513); the outer annular surface of the roller body (513) is fixedly connected to a spiral blade (512); the bottom of the roller body (513) is fixedly connected to a bevel gear three (53); the bottom of the bevel gear three (53) is rotatably connected to a support member (54); the inner annular surface of the roller body (513) is fixedly connected to a U-shaped frame (518); one side of the U-shaped frame (518) is rotatably connected to a bevel gear two (517); the bevel gear three (53) is rotatably connected to a support member (54); One end of the shaft of gear 2 (517) passes through the side wall of the U-shaped frame (518) and is fixedly connected to the ultrasonic generator (514); the ultrasonic generator (514) and the U-shaped frame (518) are rotationally connected; one side of bevel gear 2 (517) is rotationally connected to a reinforcement plate (519); one side of the reinforcement plate (519) is fixedly connected to the inner ring surface of the drum body (513); bevel gear 2 (517) is meshed with bevel gear 1 (516); the bottom of bevel gear 1 (516) is fixedly connected to motor 1 (515); the bottom of motor 1 (515) is fixedly connected to the inner wall of the drum body (513).

3. The two-way cleaning equipment for PET bottle flakes according to claim 1 is characterized in that: The outer side of the support member (54) is slidably connected to a guide frame (52), the bottom of the guide frame (52) is fixedly connected to the bottom of the inner cavity of the cleaning cylinder (5), one side of the support member (54) is fixedly connected to a support frame (59), the support frame (59) and the guide frame (52) are slidably connected, a flushing pipe (71) is arranged above the guide frame (52), one side of the flushing pipe (71) is fixedly connected to a nozzle, the other side of the flushing pipe (71) passes through the side wall of the cleaning cylinder (5), and a semicircular pipe (7) is connected between the outer annular surfaces of the two flushing pipes (71).

4. The two-way cleaning equipment for PET bottle flakes according to claim 2 is characterized in that: One side of the support frame (59) is fixedly connected to a second motor (58), the output shaft of the second motor (58) is fixedly connected to a fourth bevel gear (57), the fourth bevel gear (57) is meshed with a third bevel gear (53), the outer ring surface of the cleaning cylinder (5) is fixedly connected to a third motor (592), the output shaft of the third motor (592) is fixedly connected to a bidirectional lead screw (591), one end of the bidirectional lead screw (591) is rotatably connected to the guide frame (52), and the bidirectional lead screw (591) and the support frame (59) are connected via threads.

5. The two-way cleaning equipment for PET bottle flakes according to claim 4 is characterized in that: A rectangular hole (521) is formed at the top of the guide frame (52), a recovery bucket (56) is fixedly connected to the top of the guide frame (52), an auxiliary pipe (55) is fixedly connected to the bottom of the recovery bucket (56), and the auxiliary pipe (55) passes through the bottom side wall of the cleaning cylinder (5) and is fixedly connected to the centrifugal dehydrator (4).

6. The two-way cleaning equipment for PET bottle flakes according to claim 5 is characterized in that: The water outlet of the centrifugal dehydrator (4) is fixedly connected to a guide pipe (41), one end of the guide pipe (41) is fixedly connected to a treatment box (3), the top of the treatment box (3) is fixedly connected to a water pump (2), the water inlet of the water pump (2) is fixedly connected to a cleaning cylinder (5), and the water outlet of the water pump (2) is fixedly connected to the treatment box (3).

7. The two-way cleaning equipment for PET bottle flakes according to claim 6 is characterized in that: A guide plate (32) is fixedly connected to the bottom of the inner cavity of the treatment box (3), a drainage tube (321) is inserted through the guide plate (32), a one-way valve is installed at one end of the drainage tube (321), a filter screen (34) is fixedly connected to one side of the guide plate (32), a chemical treatment area is provided below the filter screen (34), a stirrer (33) is provided inside the chemical treatment area, and a stirring shaft of the stirrer (33) is rotatably connected to the bottom of the inner cavity of the treatment box (3).

8. The two-way cleaning equipment for PET bottle flakes according to claim 7 is characterized in that: A biological treatment zone is arranged above the filter screen (34), an aeration pipe assembly (35) is installed inside the biological treatment zone, biological filler is arranged below the aeration pipe assembly (35), one end of the aeration pipe assembly (35) is fixedly connected to the inner wall of the treatment box (3), and the other end of the aeration pipe assembly (35) passes through the side wall of the treatment box (3).

9. The two-way cleaning equipment for PET bottle flakes according to claim 8, characterized in that: The top of the processing box (3) is fixedly connected to a storage box (31), one side of the storage box (31) is fixedly connected to an overflow pipe (36), a medicine box (37) is provided at the bottom of the overflow pipe (36), one side of the medicine box (37) is fixedly connected to the storage box (31), and the bottom of the medicine box (37) is fixedly connected to the processing box (3).

10. A method for using a two-way cleaning device for PET bottle flakes, characterized in that: The PET bottle flake bidirectional cleaning device according to claim 9 is used, comprising the following steps: S1. The distance between the two roller assemblies (51) is adjusted according to the size of the PET bottle flakes to be cleaned, and the two-way lead screw (591) is driven to rotate by the motor 3 (592). The support frame (59) drives the support member (54) to move along the guide frame (52), and the two support members (54) drive the two roller assemblies (51) to move. After adjustment, the auxiliary block (61) is installed in the cleaning cylinder (5), and the debugging of the equipment is completed; S2, feeding the PET bottle flakes into between the two roller bodies (513) through the feeding pipe (11), wherein the two roller bodies (513) rotate one forward and the other reversely, and the PET bottle flakes are pushed by the spiral blades (512) to move downward along the spiral track while being scrubbed. During the scrubbing process, the nozzle on one side of the flushing pipe (71) sprays water to wash the PET bottle flakes; S3, the washed PET bottle flakes are dehydrated in a centrifugal dehydrator (4) through a recovery bucket (56) and an auxiliary pipe (55), and the waste water is collected in a treatment box (3) through a water pump (2) and a guide pipe (41); S4. The wastewater is discharged into the chemical treatment area between the filter screen (34) and the agitator (33) through the drainage pipe (321). The agitator (33) accelerates the mixing of the wastewater and the reagent. The water level after treatment rises and passes through the filter screen (34) into the biological treatment area. It is treated by the biological filler in the area. The generated clean water enters the storage tank (31), is discharged through the overflow pipe (36), and is collected in an external water tank, thereby realizing the recycling of the wastewater.

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