CN113119344A

CN113119344A - Method for crushing, cleaning and recycling PET waste plastic bottles

Info

Publication number: CN113119344A
Application number: CN201911411363.3A
Authority: CN
Inventors: 王璇
Original assignee: Tianjin Plastic Granule Environmental Protection Technology Co ltd
Current assignee: Tianjin City Mine Recycling Industry Supply Chain Management Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-16
Anticipated expiration: 2039-12-31
Also published as: CN113119344B

Abstract

The application relates to the technical field of waste plastic treatment, and discloses a method for crushing, cleaning and recycling PET waste plastic bottles. The method for crushing, cleaning and recovering the PET waste plastic bottles comprises the following steps: unpacking and scattering the bottle bricks to obtain dispersed plastic bottles; peeling off the label on the plastic bottle to obtain a naked bottle; crushing the bare bottle to obtain mixed fragments; separating the mixed fragments to obtain a bottle cover sheet and a bottle body sheet; and (5) carrying out hot washing treatment on the bottle body slices, and collecting. The crushing, cleaning and recycling method optimizes the processing steps of the plastic bottles, is simple to operate, and further improves the quality of crushed fragments.

Description

Method for crushing, cleaning and recycling PET waste plastic bottles

Technical Field

The application relates to the technical field of waste plastic treatment, for example to a method for crushing, cleaning and recycling PET waste plastic bottles.

Background

In recent years, as the living standard of people is continuously improved, the garbage output in daily life is directly increased relatively, and a large number of PET plastic bottles, aluminum cans, iron cans and the like are also included. In fact, the wastes such as PET plastic bottles, aluminum cans, iron cans, and the like are resource wastes having values of recycling and reusing.

In the present plastic bottle recycling systems, the processing units are not integrated effectively, and a lot of manpower is required to be introduced, so that the recycling process cannot be performed efficiently. In practical use, the sorting needs to be performed for a long time in consideration of the efficiency and mass production operation, so that the recovered product does not conform to the economic principle and needs to be improved.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the existing plastic bottle recovery method is complex and complicated to operate, and simultaneously, a large amount of impurities are doped in broken fragments, so that the quality of the fragments is reduced.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a method for recycling plastic bottles, which aims to solve the technical problems that the existing plastic bottle recycling method is complex and complicated to operate, and simultaneously, a large amount of impurities are doped in broken fragments, so that the quality of the fragments is reduced.

In some embodiments, a method for crushing, cleaning and recycling PET waste plastic bottles comprises the following steps: unpacking and scattering the bottle bricks to obtain dispersed plastic bottles; peeling off the label on the plastic bottle to obtain a naked bottle; crushing the bare bottle to obtain mixed fragments; separating the mixed fragments to obtain a bottle cover sheet and a bottle body sheet; and (5) carrying out hot washing treatment on the bottle body slices, and collecting.

The recovery system provided by the embodiment of the disclosure can realize the following technical effects:

the crushing, cleaning and recycling method optimizes the processing steps of the plastic bottles, is simple to operate, and further improves the quality of crushed fragments.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic flow diagram of a fragmentation cleaning recovery method according to one embodiment of the present application;

FIG. 2 is a schematic view of a bottle brick crushing, cleaning and recycling system according to one embodiment of the present application;

FIG. 3 is a schematic view of a bottle brick crushing, cleaning and recycling system according to one embodiment of the present application;

FIG. 4 is a schematic illustration of an unpacking platform according to one embodiment of the present application;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic view of a break-up mechanism according to one embodiment of the present application;

FIG. 7 is a schematic illustration of a first separator tank coupled to a first single-shaft conveyor according to one embodiment of the present application;

FIG. 8 is a schematic view of a first separator tank coupled to a first single-shaft conveyor according to one embodiment of the present application;

FIG. 9 is a schematic view of a second shaker in accordance with an embodiment of the present application;

FIG. 10 is a schematic structural view of a spray mechanism according to one embodiment of the present application;

FIG. 11 is a schematic view of first cyclonic separating apparatus according to one embodiment of the present application;

FIG. 12 is a schematic structural view of a dust extraction mechanism according to one embodiment of the present application;

FIG. 13 is a schematic view of a dust extraction mechanism according to one embodiment of the present application;

FIG. 14 is a schematic structural view of a dust extraction mechanism according to one embodiment of the present application;

FIG. 15 is a schematic structural view of a dust extraction mechanism according to one embodiment of the present application;

FIG. 16 is a schematic view of the construction of the first cyclonic separating apparatus according to one embodiment of the present application;

FIG. 17 is a schematic view of a three stage hot wash apparatus according to one embodiment of the present application;

FIG. 18 is a schematic structural view of a three-stage hot wash apparatus according to one embodiment of the present application;

FIG. 19 is a schematic view of a first switching head according to one embodiment of the present application;

FIG. 20 is a schematic structural diagram of a first switching head according to one embodiment of the present application;

FIG. 21 is a schematic view of a second switching head according to one embodiment of the present application;

FIG. 22 is a schematic view of a stirring mechanism according to one embodiment of the present application.

Description of reference numerals:

10. unpacking the platform; 101. a feeding platform; 1011. a platform body; 10111. a table top; 10112. an anti-collision hole; 1012. a cutting device; 1013. a lifting assembly; 10131. a second lifting member; 101311, a second telescoping end; 10132. pressing a plate; 10133. an interlayer; 1014. a cutting knife; 10141. a first telescoping member; 101411, a first telescoping end; 10142. a cutter head; 101421, a first blade; 101422, a second blade; 101423, knife edge; 102. a breaking mechanism; 1021. a housing; 1022. covering the opening; 1023. a discharge port of the housing; 1024. breaking up the assembly; 1025. breaking up the motor; 1026. scattering leaves; 20. label removing machine; 201. a feeding port of the label removing machine; 202. a discharge port of the label removing machine; 30. a crusher; 301. a feed inlet of the crusher; 302. a discharge port of the crusher; 40. a first separation tank; 401. a trough body; 4011. a containing groove; 4012. a first discharge port of the first separation tank; 4013. a second discharge port of the first separation tank; 4014. a feed inlet of the first separation tank; 402. a stirring mechanism; 403. a first discharge mechanism; 404. a second discharge mechanism; 405. a support; 406. a notch; 407. a water inlet pipe; 408. a water injection port; 409. a partition plate; 41. a second separation tank; 411. a feed inlet of the second separation tank; 412. a first discharge port of the second separation tank; 413. a second discharge port of the second separation tank; 50. a third-stage hot washing device; 51. a first hot wash tank; 511. a feed inlet of the first hot washing tank; 512. a discharge port of the first hot washing tank; 52. a second hot wash tank; 521. a feeding port of the second hot washing tank; 522. a discharge port of the second hot washing tank; 53. a third hot wash tank; 531. a feeding port of a third hot washing tank; 532. a discharge port of the third hot washing tank; 54. a liquid injection pipe; 55. a first single-shaft conveyor; 551. a feed port of a first single-shaft conveyor; 552. a discharge port of the first single-shaft conveyor; 56. a second single-shaft conveyor; 561. a feed inlet of a second single-shaft conveyor; 562. a discharge port of the second single-shaft conveyor; 57. a third single-shaft conveyor; 571. a feed port of a third single-shaft conveyor; 572. a discharge port of a third single-shaft conveyor; 58. a fourth single-shaft conveyor; 581. a feed port of a fourth single-shaft conveyor; 582. a discharge port of a fourth single-shaft conveyor; 59. a first switching head; 591. a first housing; 592. a feed inlet of the first switching head; 593. a discharge port of the first switching head; 594. a switching mechanism; 595. a blocking member; 596. a motor; 510. a second switching head; 5101. a second housing; 5102. a feed inlet of the second switching head; 5103. a discharge port of the second switching head; 61. a first vibrating screen; 611. a feed inlet of the first vibrating screen; 612. a discharge port of the first vibrating screen; 613. an impurity discharge port of the first vibrating screen; 62. a second vibrating screen; 621. a spraying mechanism; 622. a spraying mechanism main body; 6231. a first channel; 6232. a second channel; 6233. a third channel; 624. a shower head; 625. a vibrating chamber of the second vibrating screen; 626. screening a screen; 627. a feeding port of the second vibrating screen; 628. a discharge port of the second vibrating screen; 629. an impurity discharge hole of the second vibrating screen; 63. a first dual-axis conveyor; 631. a feed port of a first double-shaft conveyor; 632. a discharge port of the first double-shaft conveyor; 64. a second dual-shaft conveyor; 641. a feed inlet of a second double-shaft conveyor; 642. a discharge port of the second double-shaft conveyor; 65. a first friction washer; 651. a feeding port of the first friction cleaning machine; 652. a discharge port of the first friction cleaning machine; 66. a second friction washer; 661. a feeding port of a second friction cleaning machine; 662. a discharge port of the second friction cleaning machine; 67. a first cyclonic separating apparatus; 671. a first cyclone separator; 6711. a feed inlet of the first cyclone; 6712. a discharge port of the first cyclone separator; 672. a second cyclone separator; 6721. the feed inlet of the second cyclone separator; 6722. a discharge port of the second cyclone separator; 673. a dust removal mechanism; 6731. a feed inlet of the dust removal mechanism; 6732. a dust removal port of the dust removal mechanism; 6733. a discharge port of the dust removal mechanism; 6734. a drive motor; 6735. a fourth channel; 6736. a drum; 6737. an open wall; 68. a second cyclonic separating apparatus; 681. a feeding port of the second cyclone separation device; 682. a discharge port of the second cyclone separation device; 71. a first air-conveying device; 711. a feeding port of the first air conveying device; 712. a discharge port of the first air supply device; 72. a second air supply device; 721. a feeding port of the second air conveying device; 722. a discharge port of the second air supply device; 80. a feeding device; 801. a feeding port of the feeding device; 802. a discharge port of the feeding device; 9. and (5) bottle bricks.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

In the description herein, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention. In the description herein, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through an intermediate medium, and the specific meanings of the terms as described above will be understood by those skilled in the art according to the specific situation.

Referring to fig. 1, a method for crushing, cleaning and recycling PET waste plastic bottles according to an embodiment of the present disclosure is described, the method comprising: s01, unpacking and scattering the bottle bricks to obtain scattered plastic bottles; s02, peeling the label on the plastic bottle to obtain a naked bottle; s03, crushing the bare bottle to obtain mixed fragments; s04, separating the mixed fragments to obtain a bottle cover sheet and a bottle body sheet; and S05, carrying out hot washing treatment on the bottle body slices, and collecting.

In an embodiment of the present disclosure, as shown in fig. 1 to 8, an embodiment of the present disclosure further provides a crushing, cleaning and recycling system for implementing the above method, where the crushing, cleaning and recycling system includes: the unpacking platform 10 is used for unpacking and scattering the bottle bricks 9; the unpacking platform 10 comprises a feeding platform 101 and a scattering mechanism 102, wherein the scattering mechanism is arranged at one end of the feeding platform; the scattering mechanism is used for scattering the bottle bricks into separated plastic bottles; a label remover 20 for removing labels from plastic bottles; a feeding port 201 of the label removing machine is communicated with a discharging port of the scattering mechanism; a crusher 30 for crushing the label-peeled plastic bottle into mixed pieces; a feeding port 301 of the crusher is communicated with a discharging port 202 of the label removing machine; a first separating groove 40 for separating the bottle lid piece and the bottle body piece from the mixed chips; a feeding port 4014 of the first separation tank is communicated with a discharge port 302 of the crusher; a first discharge port 4012 of the first separation tank is used for discharging the bottle cap pieces; the second discharge port 4013 of the first separation tank is used for discharging the bottle body; the three-stage hot washing device 50 is characterized in that a feeding port of the three-stage hot washing device is communicated with a second discharging port 4013 of the first separating tank, and a discharging port of the three-stage hot washing device is used for discharging the bottle body.

Optionally, the feeding platform 101 comprises a platform body 1011, a cutting device 1012. The PET three-color bottle brick can be regarded as a material bag formed by extruding and packaging plastic bottles made of PET materials with three colors of blue, white and green; mesa 10111 of platform main part is used for depositing PET three-colour bottle brick, and cutting device 1012 sets up on the mesa, and along platform main part length direction's one end, and cutting device is used for cutting off the iron wire rope of tying up the bottle brick. The unpacking platform can improve the unpacking work efficiency and improve the automation degree of the unpacking platform.

Optionally, as shown in fig. 4 and 5, the cutting device 1012 comprises a lifting assembly 1013 and a cutting knife 1014. One end of the lifting component is arranged on the table-board; the cutting knife is arranged at the other end of the lifting component. The cutting knife 1014 comprises a first telescopic member 10141, a cutting head 10142, and the cutting head of the cutting knife faces the table top. For example, the cutter head is welded to the telescoping end of the first telescoping member. The cutting head is an arc-shaped rod, a first cutting edge 101421 and a second cutting edge 101422 are integrally formed on the end face of one end, facing the table top, of the cutting head 10142, the structure of the first cutting edge is the same as that of the second cutting edge, the first cutting edge and the second cutting edge are oppositely arranged, and a V-shaped cutting edge 101423 is formed between the first cutting edge and the second cutting edge. The first cutting edge is triangular pyramid-shaped, and the spine part of the first cutting edge faces the table board. An anti-collision hole 10112 for the cutting knife to pass through is integrally formed on the table top. The lifting assembly 1013 includes a second lifting member 10131 and a pressing plate 10132. The flexible end of second lifting member sets up in a side of clamp plate. One end of the second lifting piece, which is far away from the pressure plate, is fixed on the table-board. And one side surface of the pressure plate facing the table top is provided with two second lifting pieces. Two second lifting member symmetries set up on the clamp plate, are formed with the intermediate layer 10133 that can supply the bottle brick to pass through between two extensible member, clamp plate and the mesa. The first telescopic piece is arranged on one side face, far away from the table-board, of the pressing plate, and the first telescopic end penetrates through a hole in the pressing plate to enter the interlayer to be connected with the cutter head. For example, the first telescoping member and the second lifting member may be provided by a model SC air cylinder manufactured by chbh.

Optionally, as shown in fig. 4 and 6, the breaking mechanism 102 includes a housing 1021 and a breaking assembly 1024. The housing is arranged on the platform main body and is close to one end of the cutting device. The cover opening 1022 of the cover case faces the bottle brick 9. The scattering component is arranged at the bottom of the housing. The breaking-up assembly 1024 includes a breaking-up motor 1025 and breaking-up blades 1026, the breaking-up blades are disposed on an output shaft of the breaking-up motor, and the breaking-up blades and the output shaft of the breaking-up motor are coaxially disposed. The scattering blades are helical blades. The shell bottom is arc-shaped, a discharge port 1023 (which can be regarded as a discharge port of a breaking mechanism) of the shell is integrally formed at the shell bottom, and the discharge port of the shell can be used for separated plastic bottles to pass through. The scattering blades are arranged at the bottom of the shell, and the scattering motor is arranged outside the shell. The bottle brick is unpacked through a cutting device on a feeding platform, unpacked plastic bottles enter the housing from the cover opening and fall to the bottom of the housing, an output shaft of the unpacking motor rotates, the unpacking blades rotate along with the output shaft, the unpacking blades unpack the unpacked bottle bricks to obtain separated plastic bottles, and the separated plastic bottles are discharged from a discharge hole of the housing.

Alternatively, the separated plastic bottle discharged from the outlet of the housing may fall into the inlet of the label remover, and the label remover may remove the label of the separated plastic bottle to obtain a bare bottle (i.e., a plastic bottle with a peeled label). For example, the label remover 20 may be a label remover of a PET mineral water bottle crushing and cleaning production apparatus manufactured by hero machines ltd, guan.

Optionally, the bare bottles are discharged from a discharge port of the label remover and fall into a feed port of a crusher. The crushing machine is used for crushing the bare bottle to obtain mixed fragments (namely the fragments formed by mixing the bottle cover plate and the bottle body plate together and containing some impurities), and the mixed fragments are discharged from a discharge port of the crushing machine. For example, the crusher 30 may be a crusher model of a plastic bottle crusher manufactured by environmental protection technologies ltd, vas.

Alternatively, as shown in fig. 7 and 8, the first separation tank 40 includes a tank body 401, a stirring mechanism 402, a first discharging mechanism 403, and a second discharging mechanism 404. The tank body comprises a containing groove 4011, and a dispersing solvent can be filled in the containing groove; the stirring mechanism is arranged at one end of the accommodating groove; the first discharging mechanism is arranged at the other end of the accommodating groove and outputs the bottle cap sheet made of the light plastic material on the upper layer of the accommodating groove; the second discharging mechanism is arranged at the bottom of the containing groove and outputs the bottle body piece made of the heavy plastic material at the lower layer of the containing groove. When the density of the material of the body and the cap of the plastic bottle is different, the position of the chips of the two materials in the dispersion solvent (e.g., water) is different. The bottle cover sheet with density less than that of the dispersing solvent floats in the dispersing solvent and is positioned on the upper layer of the containing groove; the bottle body piece with the density larger than that of the dispersing solvent is settled at the bottom of the dispersing solvent and is positioned at the lower layer of the containing groove. Firstly, set up rabbling mechanism at the one end of storage tank, will get into the mixed piece stirring of storage tank and break up, under the stirring effect of rabbling mechanism, the mixed piece after the dispersion slowly moves to the other end of storage tank, in the removal in-process, and the layering gradually, bottle lid piece are located the upper strata of storage tank (i.e. the upper strata of dispersion solvent), and the body piece is located the lower floor of storage tank (i.e. the lower floor of dispersion solvent). The first discharging mechanism outputs the bottle cap pieces, and a discharging hole of the bottle cap pieces output by the first separating groove is a first discharging hole 4012 of the first separating groove; then, the second discharge mechanism outputs the bottle body piece, and the discharge hole of the bottle body piece output by the first separation groove is the second discharge hole 4013 of the first separation groove. The separation of the mixed chips is accomplished by the first separating tank. Simple structure, easy realization and low cost. Moreover, the separation effect is good. One end of the accommodating groove is the feeding port 4014 of the first separating groove, and the mixed fragments are discharged from the discharge port 302 of the crusher and fall into the feeding port 4014 of the first separating groove, and are added into the accommodating groove through the feeding port of the first separating groove. The first separating channel 40 further comprises a bracket 405 for supporting the channel body. The structural form of the stent is not limited, and for example, the stent shown in fig. 7 and 8 may be used. The structure of the stirring mechanism is not limited as long as it functions as a stirring function, and for example, the stirring mechanism may be a structure as shown in fig. 8.

Optionally, the cross section of the bottom wall of the trough body is in a V shape, and the second discharging mechanism adopts a screw feeder. The screw feeder is arranged at the lowest part of the V-shaped bottom wall. There is a concentration of the body pieces by sedimentation. The section of the shell of the screw feeder is C-shaped, one end of the shell is blocked, and the other end of the shell is used as a second discharge hole 4013 of the first separation groove; the spiral shaft is arranged in the C-shaped shell; the V-shaped bottom wall of the groove body is provided with a notch along the longitudinal direction, and the open end of the C-shaped shell is connected to the notch 406 of the V-shaped bottom wall of the groove body. The notch is longitudinally arranged on the whole V-shaped bottom wall, so that the settled bottle body piece can be output to the maximum extent.

Optionally, the first discharging mechanism includes a water inlet pipe 407 and a partition 409, and the water inlet pipe 407 is disposed on a longitudinal side wall of the tank body; a partition 409 is arranged at one end of the accommodating groove 4011 far away from the stirring mechanism 402, and divides the accommodating groove into a new accommodating groove and a second discharge hole of the first separation groove; the height of the partition plate is less than that of the accommodating groove; conveying moisture into the accommodating groove through the water inlet pipe to push the bottle cover plate to a second discharge hole of the first separation groove; the water inlet pipes are symmetrically arranged on two longitudinal opposite side walls of the groove body. As shown in fig. 8, a water inlet pipe is provided on each of the opposite side walls in the longitudinal direction of the tank body. Of course, a plurality of water inlet pipes can be arranged on each side wall, and the water inlet pipes are not limited. The flow rate of the water in the water inlet pipe is 5 m/s. The bottom wall of the second discharge hole of the first separation groove is an inclined plane; the side wall of the second discharge hole of the first separation tank also comprises a water injection port 408. Water is injected into the second discharge port of the first separation groove through the water injection port, so that the bottle cap piece is washed away, and the bottle cap piece is convenient to discharge. The body piece after the first separation treatment is discharged from the second discharge port of the first separation groove and falls into the feeding port of the third-level hot washing device, and the discharge port of the third-level hot washing device is used for discharging the body piece after the hot washing treatment and collecting the body piece. The crushing, cleaning and recycling system has the advantages that the system structure is optimized, the operation is simple, the manufacturing cost of the system is reduced, and meanwhile, the quality of the crushed fragments is further improved.

In some embodiments, the fragmentation cleaning recovery method further comprises: performing first vibration screening treatment, namely vibrating the dispersed plastic bottles to remove impurities, wherein the vibration frequency is 800-1100 Hz/min; and/or performing secondary vibration screening treatment, namely vibrating the mixed fragments to remove impurities, wherein the vibration frequency is 800-1100 Hz/min.

In the embodiment of the present disclosure, as shown in fig. 2, fig. 3, fig. 4, fig. 9, and fig. 10, the crushing, cleaning, and recycling system for implementing the method further includes: the first vibrating screen 61 is arranged between the unpacking platform and the label removing machine; a feeding port 611 of the first vibrating screen is communicated with a discharging port of the scattering mechanism, and a discharging port 612 of the first vibrating screen is communicated with a feeding port of the label removing machine; and/or a second vibrating screen 62 disposed between the crusher and the first separating tank; the feeding port 627 of the second vibrating screen is communicated with the discharging port of the crusher, and the discharging port 628 of the second vibrating screen is communicated with the feeding port of the first separating tank.

In the embodiment of the present disclosure, separated plastic bottles are discharged from the discharge port of the housing and fall into the feeding port of the first vibrating screen to be subjected to a first vibrating screen processing, the plastic bottles are subjected to vibrating screen processing in the vibrating chamber, impurities such as silt and some dirt on the plastic bottles can be screened off, the impurities are discharged from the impurity discharge port 613 of the first vibrating screen, and the plastic bottles with the impurities removed are discharged from the discharge port of the first vibrating screen (i.e., the screen port of the first vibrating screen). Wherein, better edulcoration effect is obtained through the vibration frequency of control first shale shaker. Optionally, the vibration frequency of the first vibrating screen is 850-1050 Hz/min, and a better impurity removing effect is achieved. Optionally, the vibration frequency of the first vibrating screen is 900-1000 Hz/min, and a better impurity removing effect is achieved. Optionally, the vibration frequency of the first vibrating screen is 950-970 Hz/min; the vibration frequency of the first vibrating screen was 960 Hz/min. For example, the first vibrating screen 61 may be a straight vibrating screen model DZSF-520, manufactured by shiseh-shoc mechanical equipment limited.

Alternatively, the first vibrating screen 61 and the second vibrating screen 62 have the same structure and the same vibration frequency.

Optionally, the second shaker 62 further comprises a spray mechanism 621. The spraying mechanism comprises a spraying mechanism main body 622 and a spraying head 624; the spraying mechanism main body 622 is arranged above the second vibrating screen; the spray header 624 is arranged on the spray mechanism main body; the showerhead faces a screen 626 within the shaker cavity 625 of the second shaker. Three cylindrical passages are integrally formed in the spray mechanism body 622. One end of the channel is fixedly connected with the water inlet pipe in an inserting way. The three channels are arranged in sequence along the length direction of the vibrating screen. The three channels are respectively a first channel 6231, a second channel 6232 and a third channel 6233, the inner diameter of the first channel is the same as that of the third channel, and the inner diameter of the second channel is larger than that of the first channel. The spray head is connected with the spray mechanism main body through threads, the spray head is communicated with the channel, and water in the channel can be sprayed out from the spray head. The axis of the spray header communicated with the second channel and the axis of the spray header communicated with the first channel form a certain included angle; the axis of the spray header communicated with the second channel and the axis of the spray header communicated with the third channel form a certain included angle; the included angle is in the range of 7-14 degrees. At the second shale shaker with spray the spraying effect of mechanism, the discharge gate exhaust of follow breaker mixed fragment can fall into the second shale shaker and do the second vibration screening and handle, and the tiny particle impurity that produces when silt and the breakage in the mixed fragment can be washed by the water to impurity discharge gate 629 discharge from the second shale shaker. The plastic bottle and the crushed mixed fragments are subjected to vibration screening through the vibrating screen, so that the quality of the fragments is improved. For example, the spray head may be an adjustable spray head model 157122647578601 from the Duolin manufacturer. For example, the included angle may be 7 °, or 10 °, or 12 °, or 14 °.

Optionally, as shown in fig. 2, the crushing, cleaning and recycling system further includes: a first double-shaft conveyor 63 for conveying plastic bottles; the first vibrating screen is arranged between the first vibrating screen and the label removing machine; a feeding port 631 of the first double-shaft conveyor is communicated with a discharging port of the first vibrating screen, and a discharging port 632 of the first double-shaft conveyor is communicated with a feeding port of the label removing machine; and/or a second double-shaft conveyor 64 for conveying the plastic bottles after the labels are peeled; the label removing machine is arranged between the label removing machine and the crusher; the feeding port 641 of the second double-shaft conveyor is communicated with the discharging port of the label removing machine, and the discharging port 642 of the second double-shaft conveyor is communicated with the feeding port of the crusher.

Alternatively, the first twin-shaft conveyor 63 and the second twin-shaft conveyor 64 may be both twin-shaft screw conveyors manufactured by the seiko environmental protection machinery co.

The plastic bottles subjected to the first vibration screening treatment fall into a feeding port of a first double-shaft conveyor from a discharging port of the first vibration screen, the first double-shaft conveyor conveys the plastic bottles to a label removing machine, and a discharging port of the first double-shaft conveyor is located right above the feeding port of the label removing machine, so that the plastic bottles are convenient for next procedure treatment.

The bare bottles are discharged from a discharge port of the label removing machine and fall into a feeding port of a second double-shaft conveyor, the bare bottles are conveyed to the crusher by the second double-shaft conveyor, and the discharge port of the second double-shaft conveyor is positioned right above the feeding port of the crusher, so that the processing of the next procedure is facilitated.

In some embodiments, the second vibratory screening process further comprises: performing first friction cleaning treatment, namely performing friction cleaning on the mixed fragments; and/or, the hot washing treatment further comprises: and performing second friction cleaning treatment, namely performing friction cleaning on the bottle body piece.

Optionally, the friction frequency of the first friction cleaning treatment and the second friction cleaning treatment is 1200-1700 Hz/min.

Optionally, the flow rate of the cleaning water of the first friction cleaning treatment and the second friction cleaning treatment is 0.5-3 m/s.

In the embodiment of the present disclosure, as shown in fig. 2 and fig. 3, the crushing, cleaning and recycling system for implementing the method further includes: a first friction washer 65 disposed between the second vibrating screen and the first separating tank 40; a feeding port 651 of the first friction cleaning machine is communicated with a discharging port of the second vibrating screen, and a discharging port 652 of the first friction cleaning machine is communicated with a feeding port of the first separating tank 40; and/or a second friction washer 66 disposed after the tertiary thermal washing apparatus; a feeding port 661 of the second friction cleaning machine is communicated with a discharging port of the third-stage hot washing device, and a discharging port 662 of the second friction cleaning machine discharges the bottle body.

In the embodiment of the disclosure, after the mixed chips are subjected to the second vibratory screening treatment, the mixed chips are subjected to a first friction cleaning treatment. The mixed fragments are discharged from a discharge port of the second vibrating screen and fall into a feed port of the first friction cleaning machine, the first friction cleaning machine performs friction cleaning on the mixed fragments and sends the mixed fragments to the first separation tank, and the discharge port of the first friction cleaning machine is located right above the feed port of the first separation tank. Impurities such as dust in the mixed fragments are cleaned, and the quality of the mixed fragments is improved. Wherein a better cleaning effect is obtained by controlling the friction frequency of the first friction cleaning machine. Optionally, the friction frequency of the first friction cleaning machine is 1300-1600 Hz/min. And a better cleaning effect is realized. Optionally, the friction frequency of the first friction cleaning machine is 1400-1500 Hz/min. Optionally, the friction frequency of the first friction cleaning machine is 1450-1480 Hz/min. Optionally, the first friction washer has a friction frequency of 1465 Hz/min. Wherein a better washing effect is obtained by controlling the flow rate of the water of the first friction washer. Optionally, the flow speed of the water of the first friction cleaning machine is 1-2.5 m/s. And a better cleaning effect is realized. Optionally, the flow speed of the water of the first friction cleaning machine is 1-2 m/s. Optionally, the flow speed of the water of the first friction cleaning machine is 1.3-1.7 m/s. Optionally, the flow rate of the water of the first friction washer is 1.5 m/s. For example, the first friction cleaning machine and the second friction cleaning machine can be both the friction cleaning machine manufactured by Bosheng environmental protection equipment, Inc. with model number BS-80G.

Optionally, the first friction washer and the second friction washer have the same structure, the same friction frequency and the same water flow rate.

And after the bottle body is subjected to hot washing treatment, carrying out second friction washing treatment on the bottle body. The bottle body falls into the feeding port of the second friction cleaning machine from the discharge port of the three-stage hot washing device, the second friction cleaning machine performs friction cleaning on the bottle body and discharges the bottle body, and the discharge port of the second friction cleaning machine is used for discharging the bottle body. The liquid medicine in the hot washing treatment process is prevented from remaining on the bottle body.

In some embodiments, obtaining the bottle lid piece and the bottle body piece further comprises: performing first air separation treatment, namely removing impurities from the bottle cap piece in an air separation mode, wherein the air pressure is 70-100 Pa; and/or the second friction cleaning treatment further comprises the following steps: and (3) performing second air separation treatment, namely removing impurities from the bottle body piece by air separation, wherein the air pressure is 70-100 Pa.

In the embodiment of the present disclosure, as shown in fig. 11 to 16, the crushing, cleaning and recycling system for implementing the method further includes: a first cyclone 67 disposed behind the first separating tank; a feeding port of the first cyclone separation device is communicated with a first discharge port of the first separation groove, and a discharge port of the first cyclone separation device is used for discharging bottle cover sheets; and/or a second cyclonic separating apparatus 68, disposed after the second friction washer; and a feeding port of the second cyclone separation device is communicated with a discharge port of the second friction cleaning machine, and the discharge port of the second cyclone separation device is used for discharging the bottle body.

Optionally, the first cyclonic separating apparatus 67 comprises a first cyclone 671, a second cyclone 672, and a dust extraction mechanism 673. The top plate of the dust removing mechanism is integrally provided with a feed inlet and a dust removing opening. An output shaft of a driving motor 6734 of the dust removing mechanism penetrates through a wavy fourth channel 6735 of the dust removing mechanism, and a roller 6736 is arranged on the output shaft of the driving motor and is positioned on an opening wall 6737 of the dust removing mechanism. The first discharge port of the first separation tank is communicated with the feed port 6711 of the first cyclone separator through a pipeline, the discharge port 6712 of the first cyclone separator is communicated with the feed port 6731 of the dust removing mechanism through a pipeline, and the feed port 6721 of the second cyclone separator is communicated with the dust removing port 6732 of the dust removing mechanism through a pipeline. For example, the first cyclone and the second cyclone may each be a TBLM cyclone manufactured by yokujk machines ltd.

In the disclosed embodiment, the first and second cyclones of the first cyclonic separating apparatus are provided on a support 405. As shown in fig. 16, the arrows in the figure represent the orientation of the bottle coverslip or body piece or dust or label. The bottle lid piece that has dust or label is discharged from the first discharge gate of first separating tank to carry out first selection by winnowing with the bottle lid piece and handle, get rid of impurity such as dust or label with the bottle lid piece selection by winnowing. The bottle cap piece enters the first cyclone separator from the feed inlet of the first cyclone separator through a pipeline, the first cyclone separator carries out primary separation on the bottle cap piece with dust or a label, and the separated bottle cap piece, the dust and the label enter the feed inlet of the dust removal mechanism through the discharge port of the first cyclone separator through the pipeline. The bottle cover plate directly impacts on the opening wall of the dust removal mechanism due to the gravity of the bottle cover plate, dust or labels on the bottle cover plate can be separated from the bottle cover plate due to the impact effect, and the bottle cover plate falls along the opening wall. The driving motor corotates, and the output shaft of driving motor drives the cylinder and rotates, and the cylinder removes dust to the bottle lid piece along uncovered wall whereabouts. A part of the bottle cover sheet can strike the open wall again under the action of the roller and then fall along the open wall; a part of the bottle cover sheet can impact the top plate of the dust removing mechanism under the action of the roller and then fall into the wavy fourth channel; a portion of the bottle-lid sheet falls into the fourth wavy channel after passing through the gap of the drum. The bottle cover plate falling into the fourth channel generates multiple impacts in the wavy fourth channel, so that dust or labels on the bottle cover plate are further separated from the bottle cover plate. And finally, discharging the bottle cover sheets through a discharge port 6733 of the funnel-shaped dust removal mechanism. The feed inlet of the second cyclone separator is communicated with a dust removal port of the dust removal mechanism, and the dust removal port can generate suction force according to wind pressure generated by the second cyclone separator. The separated dust or the label in the first cyclone separator and the dust or the label generated in the dust removing mechanism are sucked to the dust removing opening of the dust removing mechanism under the action of suction force, and the dust or the label can firstly enter the dust removing opening of the dust removing mechanism, then enter the second cyclone separator and then be discharged from the discharge opening 6722 of the second cyclone separator. Wherein, obtain better edulcoration effect through the wind pressure of controlling first cyclone. Optionally, the wind pressure of the first cyclone separation device is 75-95 Pa. And a better impurity removal effect is realized. Optionally, the wind pressure of the first cyclone separation device is 80-90 Pa. Optionally, the wind pressure of the first cyclonic separating apparatus is 85 Pa. After the bottle cap piece is subjected to first winnowing treatment, impurities such as dust and labels in the bottle cap piece are further removed, and the product quality is improved.

Alternatively, the first cyclone 67 and the second cyclone 68 have the same structure and the same wind pressure.

And after the bottle body piece is subjected to second friction cleaning treatment, carrying out second air separation treatment on the bottle body piece. The bottle body is discharged from a discharge port of the second friction cleaning machine and falls into a feeding port of a second cyclone separation device, and the second cyclone separation device is used for winnowing the bottle body and removing impurities such as dust and labels in the bottle body. The discharge hole of the second cyclone separation device is used for discharging the bottle body.

In some embodiments, the first friction cleaning process further comprises: performing first air conveying treatment, namely drying and conveying the mixed fragments, wherein the air speed is 25-55 m/s; and/or before the second winnowing treatment, the method further comprises the following steps: and performing second air conveying treatment, namely drying and conveying the bottle body piece, wherein the air speed is 25-55 m/s.

In the embodiment of the present disclosure, as shown in fig. 2 and fig. 3, the crushing, cleaning and recycling system for implementing the method further includes: a first air-conveying device 71 arranged between the first friction cleaning machine and the first separation tank; a feeding port 711 of the first air conveying device is communicated with a discharging port of the first friction cleaning machine, and a discharging port 712 of the first air conveying device is communicated with a feeding port of the first separation tank; and/or a second air supply device 72 arranged between the second friction cleaning machine and the second cyclone separation device; the feeding port 721 of the second pneumatic conveying device is communicated with the discharging port of the second friction cleaning machine, and the discharging port 722 of the second pneumatic conveying device is communicated with the feeding port of the second cyclone separation device.

In the embodiment of the disclosure, a feeding port of the first air conveying device is communicated with a discharging port of the first friction cleaning machine through a pipeline, and a discharging port of the first air conveying device is communicated with a feeding port of the first separating tank through a pipeline. And after the mixed fragments are subjected to the first friction cleaning treatment, carrying out first air conveying treatment on the mixed fragments. The mixed fragments are discharged from a discharge port of the first friction cleaning machine, the wet mixed fragments fall into a feeding port of a first air conveying device, the first air conveying device is used for drying and conveying the wet mixed fragments to a first separating tank, and a discharge port of the first air conveying device is located right above the feeding port of the first separating tank. The wet mixed fragments are separated by spin-drying, so that the separation rate of the bottle cover plate and the bottle body plate is guaranteed. Wherein, better spin-drying and conveying effects are obtained by controlling the air supply of the first air supply device. Optionally, the wind speed of the first wind conveying device is 30-40 m/s. The better spin-drying and conveying effects are realized. Optionally, the wind speed of the first wind delivery device is 35 m/s. For example, the first air moving device 71 may be an axial flow fan model T30 manufactured by a high monument store industrial fan manufacturing plant.

Alternatively, the first air supply device 71 and the second air supply device 72 have the same structure and the same wind speed.

And after the bottle body piece is subjected to second friction cleaning treatment, carrying out second air conveying treatment on the bottle body piece. The bottle body is discharged from a discharge port of the second friction cleaning machine, the wet bottle body falls into a feeding port of the second air conveying device, the second air conveying device is used for drying and conveying the wet bottle body to the second cyclone separation device, and the discharge port of the second air conveying device is located right above the feeding port of the second cyclone separation device. The wet bottle body piece is dried and separated, so that the impurities in the next procedure can be conveniently separated.

Optionally, as shown in fig. 3, the crushing, cleaning and recycling system further includes a second separation tank 41, and the second separation tank 41 is disposed between the third-stage hot washing device and the second friction cleaning machine; a feeding port 411 of the second separation tank is communicated with a discharge port of the third-stage hot washing device, and a first discharge port 412 of the second separation tank is used for discharging bottle cover plates; the second discharge hole 413 of the second separation groove is used for discharging the bottle body; and a second discharge port of the second separation tank is communicated with a feeding port of the second friction cleaning machine. The second separation groove has the same structure as the first separation groove. The installation mode between the second separation tank and the three-stage hot washing device and between the second separation tank and the second friction cleaning machine can be just the installation mode of the first separation tank. And after the three-stage hot washing device, the bottle body after hot washing is subjected to second separation treatment, so that the quality of the bottle body is improved.

Optionally, as shown in fig. 2, the crushing, cleaning and recycling system further includes a feeding device 80, which is disposed at the first vibrating screen; the feeding port 801 of the feeding device is used for supplying plastic bottles, and the discharging port 802 of the feeding device is communicated with the feeding port of the first vibrating screen. The discharge hole of the feeding device is positioned right above the feeding hole of the first vibrating screen. Some scattered plastic bottles can be subjected to first vibration screening treatment through the feeding device, so that the unpacking process is reduced, and the crushing, cleaning and recycling system is more complete. For example, the feeding device may employ a super-cis manufactured conveyor belt of type cs.

In some embodiments, the hot wash treatment comprises: and carrying out three times of hot washing treatment on the separated bottle body slices.

In the embodiment of the present disclosure, as shown in fig. 17 to 22, the three-stage hot washing apparatus 50 for implementing the method includes a first hot washing tank 51, a second hot washing tank 52, and a third hot washing tank 53. The feeding port 511 of the first hot washing tank (which can be regarded as the feeding port of the three-stage hot washing device) is communicated with the second discharging port of the first separating tank, the discharging port 512 of the first hot washing tank is communicated with the feeding port 521 of the second hot washing tank, the discharging port 522 of the second hot washing tank is communicated with the feeding port 531 of the third hot washing tank, and the discharging port 532 of the third hot washing tank (which can be regarded as the discharging port of the three-stage hot washing device) is used for discharging the bottle body slice. Impurities on the bottle body piece are washed and cleaned for three times, and the product quality of the fragments is improved.

In some embodiments, the three heat wash treatments comprise: carrying out first hot washing treatment by adopting an alkaline agent and a cleaning agent at the temperature of 85-95 ℃; performing second heat washing treatment by using a cleaning agent at the temperature of 85-95 ℃; and (3) carrying out third heat washing treatment by adopting water at the temperature of 85-95 ℃.

In the embodiment of the present disclosure, the first hot wash tank 51, the second hot wash tank 52, and the third hot wash tank 53 for implementing the above method are all identical in structure. The first hot washing tank is washed by adopting the solution added with the alkaline detergent and the cleaning agent, the second hot washing tank is washed by adopting the solution added with the cleaning agent, and the third hot washing tank is washed by only adopting water, so that the plastic granules can be thoroughly washed, the cleanliness is high, and the follow-up application requirements are met. Wherein, the alkaline detergent can adopt caustic soda, and the cleaning agent can be a cleaning agent which is conventionally used for cleaning plastics.

In the embodiment of the disclosure, the bottle body piece is subjected to first hot washing treatment in a first hot washing tank; wherein a better cleaning effect is obtained by controlling the temperature of the first hot washing tank. Optionally, the temperature in the first hot washing tank is 86-94 ℃. Optionally, the temperature in the first hot washing tank is 88-92 ℃. Optionally, the temperature in the first hot washing tank is 89-91 ℃. Optionally, the temperature in the first hot wash tank is 90 ℃. Carrying out second hot washing treatment on the bottle body in a second hot washing tank; wherein a better cleaning effect is obtained by controlling the temperature of the second hot washing tank. Optionally, the temperature in the second hot washing tank is 86-94 ℃. Optionally, the temperature in the second hot washing tank is 88-92 ℃. Optionally, the temperature in the second hot washing tank is 89-91 ℃. Optionally, the temperature in the second hot wash tank is 90 ℃. Carrying out third hot washing treatment on the bottle body in a third hot washing tank; wherein a better cleaning effect is obtained by controlling the temperature of the third hot washing tank. Optionally, the temperature in the third hot washing tank is 86-94 ℃. Optionally, the temperature in the third hot washing tank is 88-92 ℃. Optionally, the temperature in the third hot wash tank is 90 ℃.

In the embodiment of the disclosure, the discharge port of each stage of tank body can be opened or closed, and when the discharge port is closed, the washing process is carried out in the tank body; when the discharge port is opened, the materials in the tank body are discharged. Each stage of tank body also comprises other structures for realizing the functions thereof, such as a stirring mechanism 402 for stirring the materials in the tank body; the configuration of the stirring mechanism is not limited as long as it functions as a stirring function, and a stirring mechanism having the configuration shown in fig. 22 may be used. A liquid injection pipe 54 for injecting a washing solution into the tank; and so on. The tank bodies at each stage may further include other conventional structures for realizing the functions thereof according to actual needs, and details are not described herein.

Optionally, the three-stage hot washing apparatus further comprises a first single-shaft conveyor 55, a second single-shaft conveyor 56, a third single-shaft conveyor 57, and a fourth single-shaft conveyor 58. The first single-shaft conveyor 55 is disposed between the first separation tank and the first hot wash tank; a feeding port 551 of the first single-shaft conveyor (which can be regarded as a feeding port of the three-stage hot washing device) is communicated with a second discharging port of the first separation tank, and a discharging port 552 of the first single-shaft conveyor is communicated with a feeding port of the first hot washing tank; and/or a second single-shaft conveyor 56 is disposed between the first hot wash tank and the second hot wash tank; a feeding port 561 of the second single-shaft conveyor is communicated with a discharging port of the first hot washing tank, and a discharging port 562 of the second single-shaft conveyor is communicated with a feeding port of the second hot washing tank; and/or a third single-shaft conveyor 57 is disposed between the second hot wash tank and the third hot wash tank; a feeding port 571 of the third single-shaft conveyor is communicated with a discharging port of the second hot washing tank, and a discharging port 572 of the third single-shaft conveyor is communicated with a feeding port of the third hot washing tank; and/or a fourth single-shaft conveyor 58 is disposed after the third hot wash tank; and a feeding port 581 of the fourth single-shaft conveyor is communicated with a discharge port of the third hot washing tank, a discharge port 582 (which can be regarded as a discharge port of the three-stage hot washing device) of the fourth single-shaft conveyor is used for discharging the bottle body, and the washed bottle body is conveyed to the next procedure by the fourth single-shaft conveyor. Adopt spiral material loading machine to realize the connection between the jar bodies at different levels, guarantee that jar bodies at different levels can set up on same level, and can be at the material loading in-process, the washing solution that smugglies secretly in the body of bottle can flow back to the jar internally under self action of gravity, reduce the loss of jar internal washing solution, avoided utilizing the circulating pump to pump back the energy consumption by the feed inlet of upper end by the discharge gate exhaust washing solvent simultaneously, the cost is reduced. The single-shaft conveyor of each stage may be a commercially available product, for example, a screw conveyor model GX159 available from general machines, Inc. of Helmholtz, Inc.

Optionally, the discharge port of each stage of tank body is connected with the feed port of the single-shaft conveyor connected with the discharge port in a sealing manner. When the discharge gate of jar body at each level was opened, prevent by the leakage of the mixture of the body of the bottle piece of jar internal outflow and washing solution. For example, the feeding port of the second single-shaft conveyor is connected with the discharging port of the first hot washing tank in a sealing mode. And a feeding port of the third single-shaft conveyor is hermetically connected with a discharge port of the second hot washing tank.

Optionally, the feed port of the first single-shaft conveyor is used to convey the body chips into the first hot wash tank. For example, the feed port of the first single-shaft conveyor is located below the second discharge port of the first separation tank.

The first hot washing tank comprises a standing soaking operation in order to ensure the medicine washing effect in the washing process. Therefore, in some embodiments, as shown in fig. 18, the number of the first hot wash tanks is plural. When one of the first hot washing tanks is stood for soaking, the bottle body is conveyed to other first hot washing tanks, and the first hot washing tanks are alternately stood for soaking, so that the production efficiency is improved.

When the first hot wash tank is plural, in some embodiments, as shown in fig. 18 to 20, the number of the first hot wash tanks is two in the three-stage hot wash apparatus. The tertiary thermal washing device further includes a first switching head 59; the first switching head 59 includes a first housing 591, one first switching head inlet port 592 and two first switching head outlet ports 593 and a switching mechanism 594.

Optionally, the switching mechanism 594 comprises a blocking piece 595, which is disposed at the discharge ports of the plurality of first switching heads; through the first discharge gate of control shutoff piece shutoff, realize that the discharge gate of different first switching heads and the feed inlet of first switching head constitute the intercommunication passageway. Optionally, the closure is a control valve or a movable closure plate. The control mode of the plugging piece is determined according to the actual situation. Optionally, the blocking element is a control valve, and a control valve is arranged on the discharge port of each first switching head. The opening or closing of the discharge hole of the first switching head is realized by controlling the opening or closing of the control valve. The type of the control valve is not limited, and the control valve can be a pneumatic valve, a ball valve, an electromagnetic valve and the like, and can be selected and determined according to actual conditions. Optionally, the switching mechanism further comprises a controller, and a control output end of the controller is in control connection with a control end of the control valve; the opening or closing of the control valve is controlled by a controller. The controller adopts a PLC controller. Optionally, as shown in fig. 20, the blocking member is a movable blocking plate, and by switching the position of the movable blocking plate, the discharge port of the first switching head and the feed port of the first switching head which are different form a communication channel. Optionally, the switching mechanism further comprises a motor 596 and a controller, and an output shaft of the motor is connected with a rotating shaft of the movable plugging plate; the control output end of the controller is in control connection with the control end of the motor; the opening of the motor and the rotation direction of the output shaft are controlled by the controller, so that the position of the movable plugging plate is switched. Thereby realizing that the discharge hole of different first switching heads and the feed inlet of the first switching head form a communicating channel.

The first housing 591 has an inverted Y shape, with the ports of the vertical portion serving as the feed port 592 of the first switching head and the ports of the two branch portions serving as the discharge port 593 of the first switching head. The discharge ports of the two first switching heads are respectively communicated with the feed ports of the two first hot washing tanks in a one-to-one correspondence manner. The switching mechanism comprises a movable plugging plate and a motor, the movable plugging plate is rotatably arranged at the joint of the discharge ports of the two first switching heads, and the output shaft of the motor is fixedly connected with the rotating shaft of the movable plugging plate. The motor controls the movable plugging plate to rotate, and the movable plugging plate is switched between positions for respectively plugging the discharge hole of one of the first switching heads. The switching mechanism lets open the discharge gate of a first switching head, and the discharge gate of all the other first switching heads of shutoff makes the discharge gate of the first switching head that should let open and the feed inlet intercommunication of first switching head, forms the intercommunication passageway, and the body piece is by this intercommunication passageway entering corresponding first hot washing jar in. Through the discharge gate of switching the first switching head that lets aside to switch the intercommunication passageway of feeding, and then realize for the first hot washing jar feed of difference.

When the number of the first hot washing tanks is plural, in some embodiments, as shown in fig. 18, the number of the second single-shaft conveyors is plural, the feeding port of each second single-shaft conveyor is respectively communicated with the discharging ports of the plural first hot washing tanks, and the discharging port of the second single-shaft conveyor is communicated with the feeding port of the second hot washing tank. And conveying and supplying the bottle body sheets in the plurality of first hot washing tanks to the second hot washing tank.

Optionally, as shown in fig. 21, the tertiary hot washing apparatus further includes a second switching head 510. The second switching head 510 comprises a second housing 5101, a plurality of second switching head feed ports 5102 and a second switching head discharge port 5103, wherein the plurality of second switching head feed ports are arranged in the second housing and are communicated with the first single-shaft conveyor discharge port; and the discharge hole of the second switching head is arranged in the second shell and is respectively communicated with the feed holes of the second hot washing tanks.

The arrangement described in this application can be considered as an integral moulding, or the two parts can be connected and fixed by means of screws or bolts. The described communication can be implemented by using pipeline communication, or according to actual requirements, it can also include other conventional structures for implementing its functions, and its details are not described herein.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, the first end may be called the second end, and likewise, the second end may be called the first end. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For the devices, structures, products, and the like of the embodiment disclosure, if they correspond to the devices, structures, and the like of the embodiment disclosure, the description of the devices, structures, and the like may be referred to in relevant places.

The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A PET waste plastic bottle crushing, cleaning and recycling method is characterized by comprising the following steps:

unpacking and scattering the bottle bricks to obtain dispersed plastic bottles;

peeling off the label on the plastic bottle to obtain a naked bottle;

crushing the bare bottle to obtain mixed fragments;

separating the mixed fragments to obtain a bottle cover sheet and a bottle body sheet;

and (5) carrying out hot washing treatment on the bottle body slices, and collecting.

2. The crushing, cleaning and recycling method according to claim 1, further comprising:

performing first vibration screening treatment, namely vibrating the dispersed plastic bottles to remove impurities, wherein the vibration frequency is 800-1100 Hz/min; and/or the presence of a gas in the gas,

and performing second vibration screening treatment, namely vibrating the mixed fragments to remove impurities, wherein the vibration frequency is 800-1100 Hz/min.

3. The crushing cleaning recovery method according to claim 2,

after the second vibratory screening process, the method further comprises:

performing first friction cleaning treatment, namely performing friction cleaning on the mixed fragments; and/or the presence of a gas in the gas,

after the hot washing treatment, the method also comprises the following steps:

and performing second friction cleaning treatment, namely performing friction cleaning on the bottle body piece.

4. The crushing cleaning recovery method according to claim 3,

the friction frequency is 1200 to 1700 Hz/min.

5. The crushing cleaning recovery method according to claim 3 or 4,

the flow rate of the cleaning water is 0.5-3 m/s.

6. The crushing cleaning recovery method according to claim 3,

after obtaining bottle lid piece and body piece, still include:

performing first air separation treatment, namely removing impurities from the bottle cap piece in an air separation mode, wherein the air pressure is 70-100 Pa; and/or the presence of a gas in the gas,

after the second friction cleaning treatment, the method further comprises the following steps:

and (3) performing second air separation treatment, namely removing impurities from the bottle body piece by air separation, wherein the air pressure is 70-100 Pa.

7. The crushing cleaning recovery method according to claim 6,

after the first friction cleaning treatment, the method further comprises the following steps:

performing first air conveying treatment, namely drying and conveying the mixed fragments, wherein the air speed is 25-55 m/s; and/or the presence of a gas in the gas,

before the second winnowing is handled, still include:

and performing second air conveying treatment, namely drying and conveying the bottle body piece, wherein the air speed is 25-55 m/s.

8. The fragmentation washing recovery method according to any of claims 1 to 4, characterised in that the thermal washing treatment comprises:

and carrying out three times of hot washing treatment on the separated bottle body slices.

9. The crushing cleaning recovery method according to claim 8, wherein the three-time heat washing treatment comprises:

carrying out first hot washing treatment by adopting an alkaline agent and a cleaning agent at the temperature of 85-95 ℃;

performing second heat washing treatment by using a cleaning agent at the temperature of 85-95 ℃;

and (3) carrying out third heat washing treatment by adopting water at the temperature of 85-95 ℃.