CN113119344B

CN113119344B - PET waste plastic bottle crushing, cleaning and recycling method

Info

Publication number: CN113119344B
Application number: CN201911411363.3A
Authority: CN
Inventors: 王璇
Original assignee: Tianjin City Mine Recycling Industry Supply Chain Management 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: 2023-07-04
Anticipated expiration: 2039-12-31
Also published as: CN113119344A

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 recycling the PET waste plastic bottles comprises the following steps: unpacking and scattering the bottle bricks to obtain dispersed plastic bottles; stripping the label on the plastic bottle to obtain a bare 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) performing heat washing treatment on the bottle body piece, and collecting. The crushing, cleaning and recycling method optimizes the treatment steps of the plastic bottle, is simple to operate, and further improves the quality of crushed fragments.

Description

PET waste plastic bottle crushing, cleaning and recycling method

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, due to the continuous improvement of the standard of living of people, the relative increase of the output of garbage in daily life is also directly promoted, and a large number of PET plastic bottles, aluminum cans, iron cans and the like are also included. In practice, these wastes such as PET plastic bottles, aluminum cans, and iron cans are resource wastes having recycling values.

In the existing plastic bottle recycling systems, each processing flow unit cannot be effectively integrated, a large amount of manpower is required to be introduced, and the recycling flow cannot be effectively performed. In practical use, efficiency and mass production operation are considered, and long time is required for sorting, so that the recycled products do not meet the economic principle and need 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 recycling method is complex and complex in operation, and meanwhile, 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, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a plastic bottle recycling method to solve the technical problems that an existing plastic bottle recycling method is complex and complex in operation, and meanwhile broken fragments are doped with a large amount of impurities, so that the quality of the fragments is reduced.

In some embodiments, a method for the broken cleaning and recycling of PET waste plastic bottles, the method comprising: unpacking and scattering the bottle bricks to obtain dispersed plastic bottles; stripping the label on the plastic bottle to obtain a bare 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) performing heat washing treatment on the bottle body piece, 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 treatment steps of the plastic bottle, 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 and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

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

FIG. 2 is a schematic diagram of a bottle tile breakage cleaning recovery system according to one embodiment of the present application;

FIG. 3 is a schematic diagram of a bottle tile breakage cleaning recovery system according to one embodiment of the present application;

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

fig. 5 is an enlarged view of a portion a in fig. 4;

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

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

FIG. 8 is a schematic illustration of a connection of a first separator tank to a first single-axis conveyor according to one embodiment of the present application;

FIG. 9 is a schematic illustration 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 a first cyclonic separating apparatus according to one embodiment of the present application;

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

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

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

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

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

FIG. 17 is a schematic diagram of a three stage thermal wash apparatus according to one embodiment of the application;

FIG. 18 is a schematic diagram of a three stage thermal washer according to one embodiment of the present application;

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

fig. 20 is a schematic structural view of a first switching head according to an embodiment of the present application;

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

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

Reference numerals illustrate:

10. unpacking 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. a pressing plate; 10133. an interlayer; 1014. a cutting knife; 10141. a first telescopic member; 101411, first telescoping end; 10142. a cutter head; 101421, first blade; 101422, second blade; 101423 and knife edge; 102. a scattering mechanism; 1021. a housing; 1022. a cover opening; 1023. a discharge hole of the housing; 1024. a break-up assembly; 1025. scattering the motor; 1026. scattering the blades; 20. a label removing machine; 201. a feed inlet 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 tank body; 4011. a receiving 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 discharging mechanism; 404. a second discharging mechanism; 405. a bracket; 406. a notch; 407. a water inlet pipe; 408. a water filling 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 three-stage heat 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 feed inlet of the second hot washing tank; 522. a discharge port of the second hot washing tank; 53. a third hot wash tank; 531. a feed inlet of the third heat washing tank; 532. a discharge port of the third heat washing tank; 54. a liquid injection pipe; 55. a first single-shaft conveyor; 551. a feed inlet of the 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 the second single-shaft conveyor; 562. a discharge port of the second single-shaft conveyor; 57. a third single-shaft conveyor; 571. a feed inlet of the third single-shaft conveyor; 572. a discharge port of the third single-shaft conveyor; 58. a fourth single-shaft conveyor; 581. a feed inlet of the fourth single-shaft conveyor; 582. a discharge port of the 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. impurity discharge port of the first vibrating screen; 62. a second vibrating screen; 621. a spraying mechanism; 622. a spray mechanism body; 6231. a first channel; 6232. a second channel; 6233. a third channel; 624. a spray header; 625. a vibrating cavity of the second vibrating screen; 626. a screen; 627. a feed inlet of the second vibrating screen; 628. a discharge port of the second vibrating screen; 629. impurity discharge port of the second vibrating screen; 63. a first biaxial conveyor; 631. a feed inlet of the first double-shaft conveyor; 632. a discharge port of the first biaxial conveyor; 64. a second double-shaft conveyor; 641. a feed inlet of the second double-shaft conveyor; 642. a discharge port of the second double-shaft conveyor; 65. a first friction washer; 651. a feed inlet of the first friction washer; 652. a discharge port of the first friction washer; 66. a second friction washer; 661. a feed inlet of the second friction washer; 662. a discharge port of the second friction washer; 67. a first cyclonic separating apparatus; 671. a first cyclone separator; 6711. a feed inlet of the first cyclone separator; 6712. a discharge port of the first cyclone separator; 672. a second cyclone separator; 6721. a feed inlet of the second cyclone separator; 6722. a discharge port of the second cyclone separator; 673. a dust removing mechanism; 6731. a feed inlet of the dust removing mechanism; 6732. a dust removing opening of the dust removing mechanism; 6733. a discharge hole of the dust removing mechanism; 6734. a driving motor; 6735. a fourth channel; 6736. a roller; 6737. an open wall; 68. a second cyclonic separating apparatus; 681. a feed inlet of the second cyclone separation device; 682. a discharge port of the second cyclone separation device; 71. a first air-moving device; 711. a feed inlet of the first air conveying device; 712. a discharge port of the first air conveying device; 72. a second air-moving device; 721. a feed inlet of the second air conveying device; 722. a discharge port of the second air conveying device; 80. a feeding device; 801. a feeding port of the feeding device; 802. a discharge hole of the feeding device; 9. and (5) bottle bricks.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. 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 still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

In the description herein, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the invention. In the description herein, unless otherwise specified and limited, it is to be understood that the terms "mounted," "connected," and "coupled" are used broadly, and may be mechanically or electrically coupled, may be in communication with each other within two elements, may be directly or indirectly coupled via an intermediate medium, as will be apparent to those of ordinary skill in the art, and the specific meaning of the terms described herein may be understood as appropriate.

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 dispersed plastic bottles; s02, stripping the label on the plastic bottle to obtain a bare 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; s05, performing heat washing treatment on the bottle body piece, and collecting the bottle body piece.

In an embodiment of the present disclosure, as shown in connection with fig. 1 to 8, the embodiment of the present disclosure further provides a crushing cleaning recovery system for implementing the above method, the crushing cleaning recovery 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 breaking mechanism is used for breaking the bottle bricks into separated plastic bottles; a label remover 20 for removing labels from plastic bottles; the feeding port 201 of the label removing machine is communicated with the discharging port of the scattering mechanism; a crusher 30 for crushing the plastic bottle from which the label is peeled into mixed chips; the feeding port 301 of the crusher is communicated with the discharging port 202 of the label removing machine; a first separation groove 40 for separating the bottle cap piece and the bottle body piece in the mixed chips; the feed inlet 4014 of the first separation tank is communicated with the discharge outlet 302 of the crusher; the first discharge hole 4012 of the first separation tank is used for discharging bottle cover plates; the second discharging hole 4013 of the first separating tank is used for discharging the bottle body slice; the third-stage heat washing device 50, the feeding hole of the third-stage heat washing device is communicated with the second discharging hole 4013 of the first separating tank, and the discharging hole of the third-stage heat washing device is used for discharging the bottle body.

Optionally, the feeding deck 101 comprises a deck body 1011, a cutting means 1012. The PET three-color bottle brick can be regarded as a material bag formed by extruding and packing plastic bottles made of PET materials with three colors of blue, white and green; the 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 wire rope of bundling bottle brick. The unpacking platform can improve the unpacking working efficiency and the automation degree of the unpacking platform.

Optionally, as shown in fig. 4 and 5, the cutting device 1012 includes a lift assembly 1013 and a cutter 1014. One end of the lifting component is arranged on the table top; the cutting knife is arranged at the other end of the lifting component. The cutter 1014 includes a first telescoping member 10141, a cutter head 10142, and the cutter head of the cutter faces the table top. For example, the tool bit is welded to the telescoping end of the first telescoping member. The tool bit is the arc pole, and the end face of tool bit 10142 towards the one end of mesa is last integrated into one piece has first cutting edge 101421 and second cutting edge 101422, and the structure of first cutting edge is the same with the structure of second cutting edge, and first cutting edge and second cutting edge set up relatively, are formed with V type edge 101423 between first cutting edge and the second cutting edge. The first blade is triangular pyramid, and the spike part of the first blade faces the table top. An anti-collision hole 10112 for the cutting knife to pass through is integrally formed on the table top. The elevating assembly 1013 includes a second elevating member 10131, a pressing plate 10132. The telescopic end of the second lifting piece is arranged on one side surface of the pressing plate. One end of the second lifting piece, which is far away from the pressing plate, is fixed on the table top. Two second lifting pieces are arranged on one side surface of the pressing plate, which faces the table top. The two second lifting pieces are symmetrically arranged on the pressing plate, and an interlayer 10133 through which the bottle bricks can pass is formed among the two telescopic pieces, the pressing plate and the table top. The first telescopic piece is arranged on one side surface of the pressing plate, which is far away from the table top, and the first telescopic end penetrates through the hole in the pressing plate to enter the interlayer to be connected with the tool bit. For example, the first telescoping member and the second lifting member may be cylinders of model SC manufactured by chbh.

Alternatively, as shown in fig. 4 and 6, the breaking mechanism 102 includes a casing 1021 and a breaking component 1024. The housing is arranged on the platform main body and is close to one end of the cutting device. The mouth 1022 of the housing faces the bottle brick 9. The breaking assembly is arranged at the bottom of the housing. The breaking component 1024 comprises a breaking motor 1025 and breaking blades 1026, wherein the breaking blades are arranged on an output shaft of the breaking motor and are coaxially arranged with the output shaft of the breaking motor. The scattering blades are helical blades. The bottom of the shell is arc-shaped, and the bottom of the shell is integrally formed with a discharge hole 1023 (which can be regarded as a discharge hole of the scattering mechanism) of the shell, and the discharge hole of the shell can be used for a separated plastic bottle to pass through. The breaking blades are arranged at the bottom of the shell, and the breaking motor is arranged outside the shell. The bottle brick unpacks through cutting device on the feed platform earlier, and the plastic bottle after unpacking gets into the housing from the cover mouth and falls the shell bottom, and the output shaft of breaking up the motor rotates, breaks up the blade and rotates thereupon, breaks up the bottle brick after unpacking, obtains the separated plastic bottle, and the discharge gate of separate plastic bottle follow the housing discharges.

Optionally, the separated plastic bottles are discharged from the discharge hole of the housing and can fall into the feed hole of the label removing machine, and the label removing machine performs label removing treatment on the separated plastic bottles to obtain bare bottles (namely label-stripped plastic bottles). For example, the label remover 20 may be a PET mineral water bottle size-reducing and cleaning machine manufactured by eastern guan and english-hao mechanical limited.

Optionally, the bare bottle is discharged from a discharge port of the label removing machine and falls into a feed port of the crusher. The crusher breaks the bare bottle to obtain mixed fragments (namely fragments of the bottle cover plate and the bottle body piece which are doped together and contain some impurities), and the mixed fragments are discharged from a discharge hole of the crusher. For example, the crusher 30 may be a crusher of the type of plastic bottle crusher manufactured by the company Wiscon environmental protection technologies, inc.

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 tank 4011 which can be filled with a dispersion solvent; 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 pieces which are positioned on the upper layer of the accommodating groove and made of light plastic materials; the second discharging mechanism is arranged at the bottom of the accommodating groove and outputs the bottle body piece which is positioned at the lower layer of the accommodating groove and made of heavy plastic material. The different densities of the materials of the body and the cap of the plastic bottle make the positions of the fragments of the two materials in the dispersion solvent (e.g., water) different. The bottle cap pieces with the density smaller than that of the dispersion solvent float in the dispersion solvent and are positioned on the upper layer of the accommodating groove; the bottle body piece with higher density than the dispersion solvent is settled at the bottom of the dispersion solvent and is positioned at the lower layer of the containing groove. Firstly, setting up rabbling mechanism in the one end of storage tank, stirring the mixed piece that gets into the storage tank and break up, under rabbling mechanism's stirring effect, the mixed piece after the dispersion slowly moves to the other end of storage tank, and in the removal in-process, the layering gradually, the bottle lid piece is located the upper strata of storage tank (i.e. the upper strata of dispersion solvent), 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 then the discharging hole of the bottle cap piece output by the first separating groove is a first discharging hole 4012 of the first separating groove; then, the second discharging mechanism outputs the bottle body piece, and the discharging hole of the first separating groove for outputting the bottle body piece is the second discharging hole 4013 of the first separating groove. The separation of the mixed chips is accomplished by a first separation tank. Simple structure, easy realization and low cost. Furthermore, the separation effect is good. One end of the accommodating groove is a feed inlet 4014 of the first separating groove, mixed fragments are discharged from a discharge outlet 302 of the crusher and fall into the feed inlet 4014 of the first separating groove, and are added into the accommodating groove through the feed inlet of the first separating groove. The first separation tank 40 further includes a bracket 405 for supporting the installation tank body. The structural form of the stent is not limited, and for example, the stent may be employed as shown in fig. 7 and 8. The structure of the stirring mechanism is not limited as long as the stirring function is provided, 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 tank body is V-shaped, and the second discharging mechanism adopts a screw feeder. The screw feeder is arranged at the lowest part of the bottom wall of the V-shape. There is a concentration of body pieces that utilize sedimentation. The cross section of the shell of the screw feeder is C-shaped, one end of the shell is plugged, and the other end of the shell is used as a second discharge hole 4013 of the first separation tank; the screw shaft is arranged in the C-shaped shell; the V-shaped bottom wall of the groove body is longitudinally provided with a notch, 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, which is beneficial to outputting settled bottle body pieces to the maximum.

Optionally, the first discharging mechanism comprises a water inlet pipe 407 and a baffle 409, wherein the water inlet pipe 407 is arranged on the longitudinal side wall of the tank body; one end of the accommodating groove 4011 far away from the stirring mechanism 402 is provided with a baffle 409, and the baffle separates 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 smaller than that of the accommodating groove; water is conveyed into the accommodating groove through the water inlet pipe so as to push the bottle cover plate to the second discharge hole of the first separation groove; the water inlet pipes are symmetrically arranged on two opposite longitudinal side walls of the tank 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 may be provided on each side wall, and the present invention is not limited thereto. The flow rate of the water in the water inlet pipe was 5m/s. The bottom wall of the second discharging hole of the first separating groove is an inclined plane; the sidewall of the second outlet of the first separator tank also includes a water fill 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 pieces are flushed, and the bottle cap pieces are conveniently discharged. The bottle body piece after the first separation treatment is discharged from the second discharge hole of the first separation groove and falls into the feed inlet of the three-stage heat washing device, and the discharge hole of the three-stage heat washing device is used for discharging the bottle body piece after the heat washing treatment and collecting the bottle body piece. The crushing, cleaning and recycling system optimizes the system structure, is simple to operate, reduces the manufacturing cost of the system, and further improves the quality of crushed fragments.

In some embodiments, the fracturing cleaning recovery method further comprises: a first vibration screening treatment, wherein the dispersed plastic bottles are vibrated to remove impurities, and the vibration frequency is 800-1100 Hz/min; and/or, a second vibration screening treatment, wherein the mixed fragments are vibrated to remove impurities, and the vibration frequency is 800-1100 Hz/min.

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

In this disclosed embodiment, the plastic bottle of separation is discharged from the discharge gate of housing and is fallen into the pan feeding mouth of first shale shaker and carry out first vibration screening treatment, and the plastic bottle is through the vibration screening in vibrating chamber, and impurity such as silt and some dirt on the plastic bottle can be sieved, and impurity is discharged from impurity discharge gate 613 of first shale shaker, and the plastic bottle of getting rid of impurity is discharged from the discharge gate of first shale shaker (i.e. the screen mouth of first shale shaker). Wherein, obtain better edulcoration effect through the vibration frequency of control first shale shaker. Optionally, the vibration frequency of the first vibrating screen is 850-1050 Hz/min, so that a better impurity removing effect is realized. Optionally, the vibration frequency of the first vibrating screen is 900-1000 Hz/min, so that a better impurity removing effect is realized. Optionally, the vibration frequency of the first vibrating screen is 950-970 Hz/min; the vibration frequency of the first vibrating screen is 960Hz/min. For example, the first vibrating screen 61 may be a linear vibrating screen of the model DZSF-520 manufactured by the company Limited for mechanical devices in New county and market.

Alternatively, the first and

second shakers

61, 62 are identical in structure and frequency.

Optionally, the second vibrating screen 62 further comprises a spray mechanism 621. The spray mechanism includes a spray mechanism body 622, a spray header 624; the spray mechanism body 622 is disposed above the second vibrating screen; the spray header 624 is disposed on the spray mechanism body; the showerhead faces the screen 626 within the vibrating cavity 625 of the second vibrating screen. Three cylindrical passages are integrally formed in the spray mechanism body 622. One end of the channel is fixed with the water inlet pipe through plugging. The three channels are sequentially arranged along the length direction of the vibrating screen. The three channels are a first channel 6231, a second channel 6232 and a third channel 6233 respectively, wherein 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 header is connected with the spray mechanism main body through threads, the spray header is communicated with the passage, and water in the passage can be sprayed out from the spray header. The axis of the spray header communicated with the second channel forms a certain included angle with the axis of the spray header communicated with the first channel; the axis of the spray header communicated with the second channel forms a certain included angle with the axis of the spray header communicated with the third channel; the value range of the included angle is 7-14 degrees. Under the spraying action of the second vibrating screen and the spraying mechanism, mixed fragments discharged from the discharge port of the crusher can fall into the second vibrating screen to be subjected to second vibrating screening treatment, and sediment in the mixed fragments and small particle impurities generated during crushing can be washed by water and discharged from an impurity discharge port 629 of the second vibrating screen. The vibrating screen is used for vibrating and screening the plastic bottles and the crushed mixed fragments, so that the quality of the fragments is improved. For example, the spray header may be an adjustable spray head model 157122647578601 manufactured by the Duoling manufacturer. For example, the angle may be 7 °, or 10 °, or 12 °, or 14 °.

Optionally, as shown in connection with fig. 2, the crushing cleaning recovery system further comprises: a first biaxial conveyor 63 for conveying plastic bottles; the device is arranged between the first vibrating screen and the label removing machine; the feed inlet 631 of the first double-shaft conveyor is communicated with the discharge outlet of the first vibrating screen, and the discharge outlet 632 of the first double-shaft conveyor is communicated with the feed inlet of the label removing machine; and/or a second double-shaft conveyor 64 for conveying the plastic bottles after peeling off the labels; the device is arranged between the label removing machine and the crusher; the feed inlet 641 of the second double-shaft conveyor is communicated with the discharge outlet of the label removing machine, and the discharge outlet 642 of the second double-shaft conveyor is communicated with the feed inlet of the crusher.

Alternatively, both the first biaxial conveyor 63 and the second biaxial conveyor 64 may be a biaxial screw conveyor manufactured by Zhongshun environmental protection machine Co., ltd. Model SLS 200.

The plastic bottle that is processed through first vibration screening falls into the pan feeding mouth of first biax conveyer from the discharge gate of first vibration screen, and first biax conveyer carries the plastic bottle to the machine of label that takes off, and the discharge gate of first biax conveyer is located directly over the pan feeding mouth of the machine of label that takes off, is convenient for next process to handle.

The bare bottle is discharged from the discharge port of the label removing machine and falls into the feed port of the second double-shaft conveyor, the bare bottle is 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 feed port of the crusher, so that the bare bottle is convenient for the next process treatment.

In some embodiments, the second vibratory screening process further comprises: a first friction cleaning treatment, wherein the mixed fragments are subjected to friction cleaning; and/or, after the heat washing treatment, further comprising: and a second friction cleaning treatment, wherein the bottle body piece is subjected to friction cleaning.

Optionally, the first and second friction cleaning treatments have a friction frequency of 1200 to 1700Hz/min.

Alternatively, the flow rate of the cleaning water of the first and second frictional cleaning treatments is 0.5 to 3m/s.

In an embodiment of the present disclosure, as shown in conjunction with fig. 2 and 3, the crushing cleaning recovery system for implementing the method further includes: a first friction washer 65 disposed between the second vibrating screen and the first separator tank 40; the feed port 651 of the first friction washer is communicated with the discharge port of the second vibrating screen, and the discharge port 652 of the first friction washer is communicated with the feed port of the first separation tank 40; and/or a second friction washer 66 disposed after the tertiary heat wash apparatus; the feed inlet 661 of the second friction washer is communicated with the discharge outlet of the three-stage heat washing device, and the discharge outlet 662 of the second friction washer discharges the bottle body.

In an embodiment of the present disclosure, after the mixed chips are subjected to the second vibratory screening process, the mixed chips are subjected to a first friction cleaning process. The mixed fragments are discharged from the discharge hole of the second vibrating screen and fall into the feed inlet of the first friction cleaning machine, the first friction cleaning machine carries out friction cleaning on the mixed fragments and sends the mixed fragments to the first separation tank, and the discharge hole of the first friction cleaning machine is positioned right above the feed inlet of the first separation tank. And cleaning impurities such as dust in the mixed fragments, and improving the quality of the mixed fragments. Wherein, obtain better cleaning performance through the friction frequency of control first friction cleaning machine. Optionally, the friction frequency of the first friction washer is 1300-1600 Hz/min. Realizing better cleaning effect. Optionally, the friction frequency of the first friction washer is 1400-1500 Hz/min. Optionally, the first friction washer has a friction frequency of 1450-1480 Hz/min. Optionally, the first friction washer has a friction frequency of 1465Hz/min. Wherein, obtain better cleaning performance through the velocity of flow of control first friction washer's water. Alternatively, the first frictional washing machine has a water flow rate of 1 to 2.5m/s. Realizing better cleaning effect. Alternatively, the first frictional washing machine has a water flow rate of 1 to 2m/s. Alternatively, the first frictional washing machine has a water flow rate of 1.3 to 1.7m/s. Alternatively, the first friction washer has a water flow rate of 1.5m/s. For example, the first and second frictional washing machines may be each a frictional washing machine of model BS-80G manufactured by Bosheng environmental protection equipment Co., ltd.

Alternatively, the first frictional washing machine is identical in structure to the second frictional washing machine, the frictional frequency is identical, and the flow rate of water is also identical.

And after the bottle body is subjected to heat washing treatment, performing second friction washing treatment on the bottle body. The body piece falls into the pan feeding mouth of second friction cleaning machine from tertiary heat washing device's discharge gate, and the second friction cleaning machine rubs the washing and discharges the body piece to the body piece, and the discharge gate of second friction cleaning machine is used for discharging the body piece. The liquid medicine remained on the bottle body in the heat washing treatment process is avoided.

In some embodiments, the resulting bottle cap and body wafer further comprise: performing first air separation treatment, namely performing air separation on the bottle cap pieces to remove impurities, wherein the air pressure is 70-100 Pa; and/or, the second friction cleaning treatment further comprises: and (3) carrying out second air separation treatment, namely carrying out air separation on the bottle body piece to remove impurities, wherein the air pressure is 70-100 Pa.

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

Alternatively, the first cyclone 67 comprises a first cyclone 671, a second cyclone 672, a dust removal mechanism 673. The top plate of the dust removing mechanism is integrally provided with a feed inlet and a dust removing opening. The output shaft of the drive motor 6734 of the dust removal mechanism penetrates through the wavy fourth channel 6735 of the dust removal mechanism, and the roller 6736 is arranged on the output shaft of the drive motor and is positioned at the opening wall 6737 of the dust removal 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, available from mechanical Inc. of FengJie, changzhou.

In the disclosed embodiment, the first cyclone separator and the second cyclone separator of the first cyclone separating apparatus are disposed on the support 405. As shown in fig. 16, the arrows in the figure represent the orientation of the bottle cap or body or dust or labels. And discharging the bottle cover plate with dust or labels from a first discharge hole of the first separation groove, performing first air separation treatment on the bottle cover plate, and removing impurities such as dust or labels by air separation on the bottle cover plate. The bottle cover plate enters the first cyclone separator from the feeding port of the first cyclone separator through a pipeline, the first cyclone separator carries out first separation on bottle cover pieces with dust or labels, and the separated bottle cover pieces, the separated dust and the separated labels enter the feeding port of the dust removing mechanism through a pipeline through the discharging port of the first cyclone separator. The bottle cover plate directly impacts on the open wall of the dust removing 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 down along the open wall. The driving motor rotates positively, and the output shaft of the driving motor drives the roller to rotate, so that the roller removes dust on bottle cap pieces falling along the opening wall. A part of bottle cover plate falls down along the open wall after striking the open wall again under the action of the roller; a part of bottle cover plates can fall into the wavy fourth channel after striking the top plate of the dust removing mechanism under the action of the roller; a part of the bottle cover plate falls into the wavy fourth channel after passing through the gap of the roller. 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. Finally, the bottle cap pieces are discharged through a discharge hole 6733 of the funnel-shaped dust removing mechanism. The feed inlet of the second cyclone separator is communicated with the dust removing opening of the dust removing mechanism, and suction force is generated at the dust removing opening according to wind pressure generated by the second cyclone separator. The separated dust or label in the first cyclone separator and the dust or label generated in the entering dust removing mechanism are sucked to the dust removing opening of the dust removing mechanism due to the effect of the suction force, and the dust or label can firstly enter the dust removing opening of the dust removing mechanism, then enter the second cyclone separator and then are discharged from the discharge opening 6722 of the second cyclone separator. Wherein, obtain better edulcoration effect through controlling the wind pressure of first cyclone. Alternatively, the wind pressure of the first cyclone separation device is 75-95 Pa. Realize better edulcoration effect. Alternatively, the wind pressure of the first cyclone separation device is 80-90 Pa. Alternatively, the wind pressure of the first cyclone separation device is 85Pa. After the bottle cap piece is subjected to the first air separation treatment, impurities such as dust, labels and the like in the bottle cap piece are further removed, and the product quality is improved.

Alternatively, the first cyclone separating apparatus 67 is identical in structure to the second cyclone separating apparatus 68, and the wind pressure is identical.

And after the bottle body piece is subjected to the second friction cleaning treatment, performing second air separation treatment on the bottle body piece. The body piece is discharged from the discharge port of the second friction cleaning machine, falls into the feed port of the second cyclone separation device, and is subjected to air separation by the second cyclone separation device and impurities such as dust and labels in the body piece are removed. The discharge hole of the second cyclone separation device is used for discharging the bottle body.

In some embodiments, the first friction wash process further comprises: carrying out first air conveying treatment, namely spin-drying and conveying the mixed fragments, wherein the air speed is 25-55 m/s; and/or, before the second winnowing treatment, further comprising: and (3) carrying out second air conveying treatment, namely spin-drying and conveying the bottle body pieces, wherein the air speed is 25-55 m/s.

In an embodiment of the present disclosure, as shown in conjunction with fig. 2 and 3, the crushing cleaning recovery system for implementing the method further includes: a first air-sending device 71 arranged between the first friction washer and the first separation tank; the feed port 711 of the first air conveying device is communicated with the discharge port of the first friction washer, and the discharge port 712 of the first air conveying device is communicated with the feed port of the first separation tank; and/or a second air-moving device 72 disposed between the second friction washer and the second cyclonic separating apparatus; the feed inlet 721 of the second air-conveying device is communicated with the discharge outlet of the second friction washer, and the discharge outlet 722 of the second air-conveying device is communicated with the feed inlet of the second cyclone separation device.

In the embodiment of the disclosure, the feed inlet of the first air conveying device is communicated with the discharge outlet of the first friction washer through a pipeline, and the discharge outlet of the first air conveying device is communicated with the feed inlet of the first separation tank through a pipeline. After the mixed chips are subjected to the first friction washing treatment, the mixed chips are subjected to the first air-sending treatment. The mixed fragments are discharged from a discharge hole of the first friction cleaning machine, the wet mixed fragments fall into a feed hole of the first air conveying device, the first air conveying device spin-dries and conveys the wet mixed fragments to the first separating tank, and the discharge hole of the first air conveying device is positioned right above the feed hole of the first separating tank. And the wet mixed fragments are subjected to spin-drying separation, so that the separation rate of the bottle cover plate and the bottle body piece is ensured. Wherein, through the wind send of control first wind send device, obtain better spin-drying and conveying effect. Optionally, the wind speed of the first wind delivery device is 30-40 m/s. Realizing better spin-drying and conveying effects. Optionally, the wind speed of the first wind delivery device is 35m/s. For example, the first air moving device 71 may be an axial fan of model T30 manufactured by a high-tombstoning industry fan manufacturer.

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

And after the bottle body piece is subjected to the second friction cleaning treatment, carrying out a second air conveying treatment on the bottle body piece. The body piece is discharged from the discharge hole of the second friction cleaning machine, the wet body piece falls into the feed hole of the second air conveying device, the second air conveying device spin-dries and conveys the wet body piece to the second cyclone separation device, and the discharge hole of the second air conveying device is positioned right above the feed hole of the second cyclone separation device. And the wet bottle body piece is subjected to spin-drying separation, so that the impurity separation in the next process is facilitated.

Optionally, as shown in conjunction with fig. 3, the crushing cleaning recovery system further includes a second separation tank 41, where the second separation tank 41 is disposed between the three-stage heat cleaning device and the second friction cleaner; the material inlet 411 of the second separation tank is communicated with the material outlet of the three-stage heat washing device, and the first material outlet 412 of the second separation tank is used for discharging bottle cover plates; the second discharging hole 413 of the second separating groove is used for discharging the bottle body piece; the second discharge port of the second separation tank is communicated with the feed inlet of the second friction cleaning machine. The structure of the second separation tank is the same as that of the first separation tank. The installation mode of the second separation tank and the three-stage heat washing device and the installation mode of the second separation tank and the second friction washer can be referred to the installation mode of the first separation tank. And (3) performing second separation treatment on the bottle body piece after the hot washing after the three-stage hot washing device, so that the quality of the bottle body piece is improved.

Optionally, as shown in connection with fig. 2, the crushing, cleaning and recycling system further includes a feeding device 80, where the feeding device is disposed at the first vibrating screen; the feed inlet 801 of loading attachment is used for supplying the plastic bottle, and loading attachment's discharge gate 802 communicates with the feed inlet of first shale shaker. The discharge gate of loading attachment is located the pan feeding mouth of first shale shaker directly over. Some scattered plastic bottles can be subjected to first vibration screening treatment through the feeding device, so that unpacking flow is reduced, and the crushing, cleaning and recycling system is more perfect. For example, the loading device may employ a super-compliant conveyor belt model cs.

In some embodiments, the heat wash treatment comprises: and (5) carrying out three times of heat washing treatment on the separated bottle body pieces.

In the presently disclosed embodiment, as shown in connection with fig. 17-22, a three-stage thermal wash apparatus 50 for implementing the above-described method includes a first thermal wash tank 51, a second thermal wash tank 52, and a third thermal wash tank 53. The inlet 511 of the first heat washing tank (which can be regarded as the inlet of the three-stage heat washing device) is communicated with the second outlet of the first separation tank, the outlet 512 of the first heat washing tank is communicated with the inlet 521 of the second heat washing tank, the outlet 522 of the second heat washing tank is communicated with the inlet 531 of the third heat washing tank, and the outlet 532 of the third heat washing tank (which can be regarded as the outlet of the three-stage heat washing device) is used for discharging the bottle body. The impurities on the bottle body are washed by three times of washing, so that the product quality of the fragments is improved.

In some embodiments, the three heat wash treatments comprise: the first heat washing treatment adopts alkaline agent and cleaning agent, and the temperature is 85-95 ℃; the second heat washing treatment adopts a cleaning agent, and the temperature is 85-95 ℃; and the third heat washing treatment adopts water with the temperature of 85-95 ℃.

In the embodiment of the present disclosure, the first, second, and third

hot wash tanks

51, 52, 53 for implementing the above method are all the same in structure. The first hot washing tank is washed by adopting a solution added with alkaline detergent and cleaning agent, the second hot washing tank is washed by adopting a solution added with cleaning agent, and the third hot washing tank is washed by adopting water only, so that plastic particles can be thoroughly washed, the cleanliness is high, and the subsequent application requirements are met. Wherein, caustic soda can be used as alkaline detergent, and plastic cleaning conventional cleaning agent can be used as cleaning agent.

In the embodiment of the disclosure, the bottle body piece is subjected to first heat washing treatment in a first heat washing tank; wherein a better cleaning effect is obtained by controlling the temperature of the first hot wash tank. Optionally, the temperature in the first thermal wash tank is 86-94 ℃. Optionally, the temperature in the first thermal wash tank is 88-92 ℃. Optionally, the temperature in the first thermal wash tank is 89-91 ℃. Optionally, the temperature in the first thermal wash tank is 90 ℃. The bottle body piece is subjected to a second heat washing treatment in a second heat washing tank; wherein a better cleaning effect is obtained by controlling the temperature of the second hot wash tank. Optionally, the temperature in the second thermal wash tank is 86-94 ℃. Optionally, the temperature in the second thermal wash tank is 88-92 ℃. Optionally, the temperature in the second thermal wash tank is 89-91 ℃. Optionally, the temperature in the second thermal wash tank is 90 ℃. The bottle body piece is subjected to third heat washing treatment in a third heat washing tank; wherein a better cleaning effect is obtained by controlling the temperature of the third hot wash tank. Optionally, the temperature in the third heat wash tank is 86-94 ℃. Optionally, the temperature in the third thermal wash tank is 88-92 ℃. Optionally, the temperature in the third thermal 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 tank body is subjected to a washing process; when the discharge hole is opened, the materials in the tank body are discharged. Each stage tank also includes other structures for performing its function, such as a stirring mechanism 402 for stirring the material in the tank; the structure of the stirring mechanism is not limited as long as the stirring function is achieved, and a stirring mechanism of the structure shown in fig. 22 may be employed. A liquid injection pipe 54 for injecting a washing solution into the tank; etc. The tank body of each stage can further comprise other conventional structures for realizing the functions according to actual needs, and the description is omitted herein.

Optionally, the three-stage thermal washing apparatus further includes 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 arranged between the first separation tank and the first hot wash tank; the feed inlet 551 of the first single-shaft conveyor (which can be regarded as the feed inlet of the three-stage hot washing device) is communicated with the second discharge outlet of the first separation tank, and the discharge outlet 552 of the first single-shaft conveyor is communicated with the feed inlet of the first hot washing tank; and/or, a second single-shaft conveyor 56 is disposed between the first and second hot wash tanks; the feed inlet 561 of the second single-shaft conveyor is communicated with the discharge outlet of the first hot washing tank, and the discharge outlet 562 of the second single-shaft conveyor is communicated with the feed inlet of the second hot washing tank; and/or a third single-shaft conveyor 57 is provided between the second hot wash tank and the third hot wash tank; the feed inlet 571 of the third single-shaft conveyor is communicated with the discharge outlet of the second hot washing tank, and the discharge outlet 572 of the third single-shaft conveyor is communicated with the feed inlet of the third hot washing tank; and/or a fourth single-axis conveyor 58 is disposed after the third hot wash tank; the feeding port 581 of the fourth single-shaft conveyer is communicated with the discharging port of the third heat washing tank, the discharging port 582 (which can be regarded as the discharging port of the three-stage heat washing device) of the fourth single-shaft conveyer is used for discharging the bottle body, and the washed bottle body is conveyed to the next process by the fourth single-shaft conveyer. The spiral feeding machine is adopted to realize connection between the tank bodies at all levels, so that the tank bodies at all levels can be arranged at the same level, in the feeding process, the washing solution carried in the bottle body can flow back into the tank body under the action of self gravity, the loss of the washing solution in the tank body is reduced, the energy consumption of pumping the washing solvent discharged from the discharge port back from the feed port at the upper end by using the circulating pump is avoided, and the cost is reduced. Each stage of single-shaft conveyor is commercially available, and for example, a screw conveyor of the type GX159 manufactured by Hui mechanical Co., ltd. In the Crane wall market may be used.

Optionally, the discharge port of each stage of tank body is in sealing connection with the feed inlet of the single-shaft conveyor connected with the discharge port. When the discharge port of each stage of tank body is opened, the leakage of the mixture of the bottle body piece and the washing solution flowing out of the tank body is prevented. For example, the feed inlet of the second single-shaft conveyor is in sealing connection with the discharge outlet of the first hot wash tank. And a feeding port of the third single-shaft conveyor is in sealing connection with a discharging port of the second hot washing tank.

Optionally, the inlet of the first single-shaft conveyor is used for conveying the bottle body pieces into the first hot washing tank. For example, the feed inlet of the first single-shaft conveyor is positioned below the second discharge outlet of the first separation tank.

The first hot washing tank is subjected to standing soaking operation in order to ensure the medicine washing effect in the washing process. Thus, in some embodiments, as shown in fig. 18, the number of first thermal wash tanks is a plurality. When one of the first heat washing tanks is kept stand for soaking, bottle body pieces are conveyed to the other first heat washing tanks, and the plurality of first heat washing tanks are alternately kept stand for soaking, so that the production efficiency is improved.

When there are a plurality of first heat wash tanks, in some embodiments, as shown in fig. 18 to 20, there are two first heat wash tanks in the three-stage heat wash apparatus. The three-stage thermal washing device further comprises a first switching head 59; the first switching head 59 includes a first housing 591, a first switching head feed port 592 and two first switching head discharge ports 593, and a switching mechanism 594.

Optionally, the switching mechanism 594 includes a blocking member 595 disposed at the discharge ports of the plurality of first switching heads; the first discharge ports blocked by the blocking piece are controlled, so that the communication channels are formed by the discharge ports of different first switching heads and the feed inlets of the first switching heads. Optionally, the closure member is a control valve or a movable closure plate. The control mode of the plugging piece is determined according to actual conditions. Optionally, the blocking piece is a control valve, and a control valve is arranged on the discharge hole of each first switching head. And 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 types of the control valves are not limited, and the control valves can be pneumatic valves, ball valves, electromagnetic valves 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. Alternatively, as shown in fig. 20, the plugging member is a movable plugging plate, and by switching the position of the movable plugging plate, the communication channels are formed by the discharge ports of the different first switching heads and the feed ports of the first switching heads. Optionally, the switching mechanism further comprises a motor 596 and a controller, wherein 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 ports of different first switching heads and the feed inlet of the first switching head form a communication channel.

The first housing 591 is inverted Y-shaped, the ports of the vertical portion serve as the feed ports 592 of the first switching head, and the ports of the two branch portions serve as the discharge ports 593 of the first switching head. The discharge ports of the two first switching heads are respectively communicated with the feed inlets 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, wherein the movable plugging plate is rotatably arranged at the joint of the discharge ports of the two first switching heads, and an output shaft of the motor is fixedly connected with a rotating shaft of the movable plugging plate. The motor controls the movable blocking plate to rotate and switch between the positions of the discharge hole of one of the first switching heads. The switching mechanism is opened a discharge hole of the first switching head, and the discharge holes of the rest first switching heads are blocked, so that the opened discharge hole of the first switching head is communicated with a feed inlet of the first switching head to form a communication channel, and the bottle body piece enters the corresponding first hot washing tank from the communication channel. The material outlet of the first switch head is opened by switching, so that the communication channel of the material feeding is switched, and the material feeding of the different first hot washing tanks is realized.

When there are a plurality of first heat wash tanks, in some embodiments, as shown in fig. 18, the number of second single-shaft conveyors is plural, and the feed inlet of each second single-shaft conveyor is respectively communicated with the discharge outlets of the plurality of first heat wash tanks, and the discharge outlet of the second single-shaft conveyor is communicated with the feed inlet of the second heat wash tank. And conveying and supplying the bottle body pieces in the plurality of first heat washing tanks to the second heat washing tank.

Optionally, as shown in fig. 21, the three-stage thermal washing apparatus further includes a second switching head 510. The second switching head 510 comprises a second shell 5101, a plurality of feed inlets 5102 of the second switching heads and a discharge outlet 5103 of the second switching head, wherein the feed inlets of the second switching heads are arranged in the second shell and are communicated with the discharge outlet of the first single-shaft conveyor; and the discharge hole of the second switching head is arranged on the second shell and is respectively communicated with the feed inlets of the second heat washing tanks.

The arrangement described in this application may be considered as an integral formation, or the use of screws or bolts to join and secure two parts. The described communication may be through pipes, or may further include other conventional structures for implementing the functions according to actual needs, which are not described herein.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only 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 embodiments of the present disclosure encompasses the full ambit of the claims, as well as all available equivalents of the claims. When 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 portion from another. For example, a first end may be referred to as a second end without changing the meaning of the description, and likewise, a second end may be referred to as a first end. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (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, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the apparatus, structure, product, etc. disclosed in the embodiments, if it corresponds to the apparatus, structure portion, etc. disclosed in the embodiments, the description of the apparatus, structure portion may be referred to for the relevant point.

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. The method for crushing, cleaning and recycling the PET waste plastic bottles is characterized by comprising the following steps of:

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

stripping the label on the plastic bottle to obtain a bare bottle;

crushing the bare bottle to obtain mixed fragments;

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

carrying out heat washing treatment on the bottle body piece and collecting;

wherein, separate the mixed piece, obtain bottle cover piece and body piece, include: separating the bottle cover plate and the bottle body piece in the mixed fragments by adopting a first separating groove, wherein a first discharge hole of the first separating groove is used for discharging the bottle cover piece; the second discharge hole of the first separation groove is used for discharging the bottle body piece;

the first separation tank comprises a tank body, a stirring mechanism, a first discharging mechanism and a second discharging mechanism; the tank body comprises a containing tank, and the containing tank can be filled with a dispersion solvent; 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 pieces which are positioned on the upper layer of the accommodating groove and made of light plastic materials; the second discharging mechanism is arranged at the bottom of the accommodating groove and outputs the bottle body piece made of heavy plastic material positioned at the lower layer of the accommodating groove;

The section of the bottom wall of the groove body is V-shaped, the second discharging mechanism adopts a screw feeder, and the screw feeder is arranged at the lowest part of the bottom wall of the V-shaped; the cross 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 of the first separation groove; the screw shaft is arranged in the C-shaped shell; a notch is formed in the V-shaped bottom wall of the groove body along the longitudinal direction, the open end of the C-shaped shell is connected to the notch of the V-shaped bottom wall of the groove body, and the notch is formed in the whole V-shaped bottom wall along the longitudinal direction;

the first discharging mechanism comprises a water inlet pipe and a partition plate, and the water inlet pipe is arranged on the longitudinal side wall of the tank body; the end, far away from the stirring mechanism, of the accommodating groove is provided with a baffle plate, and the accommodating groove is divided into a new accommodating groove and a second discharge hole of the first separation groove by the baffle plate; the height of the partition plate is smaller than that of the accommodating groove; water is conveyed into the accommodating groove through the water inlet pipe so as to push the bottle cap pieces to the second discharge hole of the first separation groove; the water inlet pipes are symmetrically arranged on two opposite longitudinal side walls of the tank body.

2. The fracturing cleaning recovery method of claim 1, further comprising:

A first vibration screening treatment, wherein the dispersed plastic bottles are vibrated to remove impurities, and the vibration frequency is 800-1100 Hz/min; and/or the number of the groups of groups,

and (3) carrying out second vibration screening treatment, namely removing impurities by vibrating the mixed fragments, wherein the vibration frequency is 800-1100 Hz/min.

3. The crushing, cleaning and recycling method according to claim 2, characterized in that,

after the second vibration screening treatment, the method further comprises the following steps:

a first friction cleaning treatment, wherein the mixed fragments are subjected to friction cleaning; and/or the number of the groups of groups,

after the heat washing treatment, the method further comprises the following steps:

and a second friction cleaning treatment, wherein the bottle body piece is subjected to friction cleaning.

4. The crushing, cleaning and recycling method according to claim 3, characterized in that,

the friction frequency is 1200-1700 Hz/min.

5. The method for crushing, cleaning and recycling according to claim 3 or 4, characterized in that,

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

6. The crushing, cleaning and recycling method according to claim 3, characterized in that,

after obtaining the bottle cover plate and the bottle body piece, the bottle cover plate further comprises:

performing first air separation treatment, namely performing air separation on the bottle cap pieces to remove impurities, wherein the air pressure is 70-100 Pa; and/or the number of the groups of groups,

after the second friction cleaning treatment, further comprising:

and (3) carrying out second air separation treatment, namely carrying out air separation on the bottle body piece to remove impurities, wherein the air pressure is 70-100 Pa.

7. The method for crushing, cleaning and recycling according to claim 6, characterized in that,

after the first friction cleaning treatment, further comprising:

carrying out first air conveying treatment, namely spin-drying and conveying the mixed fragments, wherein the air speed is 25-55 m/s; and/or the number of the groups of groups,

before the second winnowing treatment, the method further comprises the following steps:

and (3) carrying out second air conveying treatment, namely spin-drying and conveying the bottle body pieces, wherein the air speed is 25-55 m/s.

8. The crushing cleaning recovery method according to any one of claims 1 to 4, wherein the heat-washing treatment includes:

and (5) carrying out three times of heat washing treatment on the separated bottle body pieces.

9. The crushing, cleaning and recycling method according to claim 8, wherein the three heat-washing treatments include:

the first heat washing treatment adopts alkaline agent and cleaning agent, and the temperature is 85-95 ℃;

the second heat washing treatment adopts a cleaning agent, and the temperature is 85-95 ℃;

and the third heat washing treatment adopts water with the temperature of 85-95 ℃.