KR101760781B1 - PET chips or powder cleaning apparatus of waste plastic bottles - Google Patents

PET chips or powder cleaning apparatus of waste plastic bottles Download PDF

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Publication number
KR101760781B1
KR101760781B1 KR1020150107282A KR20150107282A KR101760781B1 KR 101760781 B1 KR101760781 B1 KR 101760781B1 KR 1020150107282 A KR1020150107282 A KR 1020150107282A KR 20150107282 A KR20150107282 A KR 20150107282A KR 101760781 B1 KR101760781 B1 KR 101760781B1
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South Korea
Prior art keywords
cleaning
washing
powder
water
unit
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KR1020150107282A
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Korean (ko)
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KR20170014254A (en
Inventor
강경석
김태일
정근중
손원근
이상웅
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(주) 시온텍
이상웅
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Publication of KR20170014254A publication Critical patent/KR20170014254A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0005—Direct recuperation and re-use of scrap material during moulding operation, i.e. feed-back of used material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work
    • B08B3/042—Cleaning travelling work the loose articles or bulk material travelling gradually through a drum or other container, e.g. by helix or gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/102—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid
    • B08B3/104—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the liquid using propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/106—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by boiling the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

A waste plastic bottle powder cleaning device is disclosed.
A patent chip or powder cleaning apparatus for waste PET bottles is a waste chip or powder cleaning apparatus for cleaning a powder generated in the course of pulverization with a waste paper pet chip or a patent chip, A primary washing unit for washing the mixed liquor while flowing up and down, and for overflowing and discharging the contaminated suspended solids generated in the washing process; A secondary cleaning unit for cleaning the mixed solution of the pad or chip washed by the primary cleaning unit and the washing water warmed by the radiator while flowing up and down; A sieve screen for separating the mixed liquid supplied from the secondary washing unit into a piece of pat chips or powder and washing water, and then returning washing water to the secondary washing unit; A cleaning screw conveyor for transferring the pat chips or powder separated from the sheave screen and performing rubbing cleaning by friction contact; A rinsing unit for rinsing the rinsing water by vertically sweeping the rinsing water and the pat chips or powder transferred from the cleaning screw conveyor; And a centrifugal separator for centrifugally separating the rinse water from the rinse unit,
The primary cleaning unit comprises: an outer cleaning tank having a pet chip or a powder outlet; A dirty water receiver for receiving a floating matter that overflows to an upper portion of the outer washing tank while being installed at an upper edge of the outer washing tank and discharging the floated water to the outside; An inner washing tank installed on the upper side of the outer washing tank and discharging the pet chip or powder supplied to the upper side to the outer washing tank through a lower portion; And a first stirring impeller installed in the outer washing tank and the inner washing tank, respectively,
The cleaning screw conveyor includes a screw housing disposed at a lower portion of the sheave screen; A feed screw rotatably installed in the screw housing; A friction wash housing installed at an outlet side of the screw housing and having a fixed friction blade on an inner circumferential surface thereof; A rotary friction shaft rotatably installed in the friction cleaning housing together with the feed screw and having a rotating friction blade on an outer circumferential surface thereof; And a resilient stopper elastically blocking the discharge port of the friction cleaning housing by the elastic force of the spring.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a PET chip or powder cleaning apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a PET chip or powder cleaning device for a PET (polyethylene terephthalate) bottle, and more particularly to a method for cleaning a PET chip for use as a recycled plastic raw material, And more particularly, to a paper chip or powder cleaning device for waste PET bottles for collecting and cleaning generated powders.

Plastic bottles are made of synthetic resin material, so they are recycled for environmental pollution. Many recycling methods are being used for this purpose.

1, the collected waste PET bottle is crushed by a cutter to a predetermined size of the chip, the crushed chip chip is cleaned by the cleaner, After the cleaning of the pat chip, the washing water is removed by a dewatering and drying machine, and then the solution is liquefied by heating in a melting furnace.

The liquefied product is extruded in the form of a bar by an extruder and then cut into a required size to be used as a raw material for making new plastic bottles.

On the other hand, plastic powder is generated in the process of pulverizing the waste PET bottle with the pet chip. When it is left untreated, most of it is polluted and is not good for the health of the worker. Therefore, most of it is collected or mixed in a melting furnace.

However, since the amount of plastic powder generated in the process of crushing waste PET bottles into the chip is relatively large, the waste of resources is large, and if foreign materials are mixed into the melting furnace without separate cleaning process, there is a problem there was.

Patent Document 1: JP-A-10-1038420 (dehydrator of a recycled synthetic resin chip manufacturing system)

The present invention provides a paper chip or powder cleaning device for waste paper bottles for easily washing powders generated in the process of pulverizing waste plastic bottles into recycled plastic raw materials.

The object of the present invention is to provide a patent chip or powder cleaning apparatus for a waste plastic bottle for washing powder generated in the course of pulverization with a waste paper pet chip or a patent chip, A primary cleaning unit for cleaning and discharging the contaminated suspension generated in the cleaning process by overflowing; A secondary cleaning unit for cleaning the mixed solution of the pad or chip washed by the primary cleaning unit and the washing water warmed by the radiator while flowing up and down; A sieve screen for separating the mixed liquid supplied from the secondary washing unit into a piece of pat chips or powder and washing water, and then returning washing water to the secondary washing unit; A cleaning screw conveyor for transferring the pat chips or powder separated from the sheave screen and performing rubbing cleaning by friction contact; A rinsing unit for rinsing the rinsing water by vertically sweeping the rinsing water and the pat chips or powder transferred from the cleaning screw conveyor; And a centrifugal separator for centrifugally separating rinsing water from the rinsing unit and transferring the rinsing water from the rinsing unit to the rinsing unit, wherein the rinsing unit comprises: an outer rinsing tank having a pad or chip outlet; A dirty water receiver for receiving a floating matter that overflows to an upper portion of the outer washing tank while being installed at an upper edge of the outer washing tank and discharging the floated water to the outside; An inner washing tank installed on the upper side of the outer washing tank and discharging the pet chip or powder supplied to the upper side to the outer washing tank through a lower portion; And a first stirring impeller installed in the outer washing tank and the inner washing tank, respectively, wherein the washing screw conveyor comprises: a screw housing disposed at a lower portion of the sheave screen; A feed screw rotatably installed in the screw housing; A friction wash housing installed at an outlet side of the screw housing and having a fixed friction blade on an inner circumferential surface thereof; A rotary friction shaft rotatably installed in the friction cleaning housing together with the feed screw and having a rotating friction blade on an outer circumferential surface thereof; And a resilient stopper elastically blocking the discharge port of the friction cleaning housing by the elastic force of the spring.

delete

Further, the secondary washing unit may include a secondary washing tank; A second agitation impeller rotatably installed in the secondary washing tank; And a radiator installed inside the secondary cleaning bath and heating the cleaning water in the secondary cleaning bath while the heating medium is circulated inside the secondary cleaning bath.

delete

The apparatus may further include a water dispensing tank installed at a lower portion of the centrifuge to store water discharged from the centrifugal separator and return the water to the rinsing unit and the primary washing unit.

The apparatus may further include a dryer for drying the centrifugal pad or powder, and a packing unit for packing the dried powder into a packing bag.

The present invention as described above can provide a condition suitable for use as a raw material for recycling by collecting the powder generated during the pulverization process with the waste paper pet chip or the patent chip and washing and dehydrating it, .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall configuration diagram of a device for cleaning waste chips or powder according to the present invention
Fig. 2 is an enlarged view of a first washing unit of a paper chip or powder cleaning apparatus for waste PET bottles according to the present invention
Fig. 3 is an enlarged view of a second washing unit and a sheve screen of a paper chip or powder cleaning apparatus of a waste PET bottle according to the present invention
4 is a side view of a sheave screen according to the present invention;
5 is a detailed configuration diagram of the cleaning screw according to the present invention
6 is an enlarged view of a rinsing unit and a centrifugal separator of a paper chip or powder cleaning apparatus for waste PET bottles according to the present invention

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

Hereinafter, embodiments of the present invention will be described.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of a paper chip or powder cleaning apparatus for waste plastic bottles according to the present invention. FIG.

Referring to FIG. 1, the device for cleaning waste chips or powder according to the present invention is used for cleaning a powder generated in a process of pulverizing a waste plastic bottle with a pet chip or a patent chip for use as a recycled plastic raw material. A second cleaning unit 200, a sheave screen 300, a cleaning screw conveyor 400, a rinsing unit 500 and a centrifugal separator 600. The cleaning unit 100 includes a cleaning unit 100,

Fig. 2 is an enlarged view of a primary washing unit of a paper chip or powder cleaning apparatus of a waste plastic bottle according to the present invention.

Referring to FIGS. 1 and 2, the primary cleaning unit 100 is configured to clean the mixed solution of the pat chips or the powder and the washing water while vertically flowing, and to discharge the contaminated suspended matters generated in the washing process by overflowing .

Here, the washing water can be used by adding various additives to the mixed solution of water alone or a mixture of ingredients or substances which are useful for cleaning such as caustic soda and surfactant.

The primary washing unit 100 has an external washing tank 110 having a pad or a powder outlet 111 on a lower side thereof. Here, the outer washing tank 110 may be provided with a drain valve DV for discharging the washing water to the outside.

The primary washing unit 100 includes a contamination receiver 120 for discharging the contaminated floating material overflowing to the upper part of the outer washing tank 110 while being installed outside the upper edge of the outer washing tank 110 . A drain pipe 121 for discharging pollutant collected in the pollutant receiver 120 to the outside is connected to an outlet formed at the bottom of the pollutant receiver 120. The drain pipe 121 is connected to a drain valve DV). ≪ / RTI >

The primary washing unit 100 includes an inner washing tank 130 installed in the upper portion of the outer washing tank 110 and discharging the upper portion of the patented chip or powder to the outer washing tank 110 .

The first washing unit 100 has a first stirring impeller 140 installed in the outer washing tank 110 and the inner washing tank 130, respectively. The first stirring impeller 140 is rotated in the washing tubs 110 and 130 by the power of the impeller motor 141 installed on the contamination receptacle 120.

The operation of the primary cleaning unit 100 having such a configuration will be described below. The pet chip or powder charged into the inner cleaning tank 130 by the first conveying conveyor 10 is supplied to the first stirring impeller The outer washing vessel 110 is discharged through the lower portion of the inner washing vessel 130 while being washed by the washing water by the agitating force of the upper impeller 142 of the inner washing vessel 140. [

The discharged pat chips or powders are washed with the washing water by the agitating force of the lower impeller 143 of the first stirring impeller 140 located inside the outer washing tank 110. In this process, the contaminants suspended in the upper part of the outer washing tank 110 are overflowed to the contaminated water receiver 120, and the contaminated floating water flowing into the contaminated water receiver 120 is discharged to the outside through the discharge pipe 121.

Meanwhile, the packed chips or powder washed in the outer washing tank 110 are discharged to the powder outlet 111 and conveyed to the secondary washing unit 200 by the second conveying conveyor 20.

3 is an enlarged view of a second cleaning unit and a sieve screen of a waste paper chip or powder cleaning apparatus according to the present invention.

Referring to FIG. 3, the secondary washing unit 200 serves to secondarily wash the patched chips or powder washed by the primary washing unit 100 with hot water.

The secondary washing unit 200 has a secondary washing tank 210 in which the pet chip or powder transferred by the second feeding conveyor 20 is received.

The second washing unit 200 has a second stirring impeller 220 rotatably installed in the second washing tank 210. Here, the second stirring impeller 220 is mounted on the same axis with an upper impeller 222 and a lower impeller 223, and is rotated by the impeller motor 221.

The secondary washing unit 200 has a radiator 230 for heating the washing water in the secondary washing tub 210 while the heating medium is circulated inside the secondary washing tub 210. The radiator 230 has one end connected to the inlet side of the boiler b installed on the outside of the secondary washing tank 210 and the other end connected to the outlet side of the boiler, The washing water in the secondary washing tub 210 is heated while being repeatedly circulated through the radiator and then returned to the boiler.

Referring to FIGS. 3 and 4, the sheave screen 300 separates the mixed solution of the washing water supplied from the secondary washing unit 200 and the pad chip or powder into the pad chip or the powder and the washing water, And returns it to the cleaning unit 200.

The sheave screen 300 is provided with a head box 311 having an inlet 311a at an upper portion of the body 310 and a screen film 320 at the front of the body 310, And passes through the screen membrane 320 and flows into the interior of the body 310 and is discharged through an outlet 311b provided at the rear of the body 310. The solid material, Filtered and dropped to the lower portion of the screen film 320, thereby separating the washing water and the pat chips or the powder.

The washing water discharged to the outlet 311b is returned to the secondary washing tank 210 of the secondary washing unit 200 through the return pipe 330 to be recycled as washing water.

A path control unit 700 may be provided between the secondary cleaning unit 200 and the sheave screen 300 to control the path of the mixed solution in which the washing water, the pat chips or the powder is mixed.

The path control means 700 includes a main transfer line 710 for connecting the discharge port of the secondary cleaning bath 210 and the inlet port of the sheave screen 300, A bypass line 720 for opening and closing the bypass line 720 and a bypass line 720 for connecting the bypass line 720 to the main transfer line 710. [ And a main line opening / closing valve 711 for opening and closing the main transfer line 710.

When the bypass line opening / closing valve 721 is shut off and the main line opening / closing valve 711 is opened, the mixed liquid in the second washing tank 210 flows through the main transfer line 710 to the sheave screen 300, Respectively.

Alternatively, when the bypass line opening / closing valve 721 is opened and the main line opening / closing valve 711 is shut off, the mixed liquid in the second washing tank 210 is mixed with a part of the main transfer line 710 and the bypass line 720, And returned to the second washing tank 210 through the second washing tank 210. As a result, the secondary cleaning is repeated.

5 is a detailed block diagram of a cleaning screw according to the present invention.

Referring to FIG. 5, the cleaning screw conveyor 400 conveys and removes the chip or powder separated from the sheath screen 300 by friction contact.

The cleaning screw conveyor 400 has a screw housing 410 disposed under the sheave screen 300.

The cleaning screw conveyor 400 has a feed screw 420 rotatably installed in the screw housing 410.

The cleaning screw conveyor 400 is provided at the outlet side of the screw housing 410 and has a friction cleaning housing 430 having a fixed friction blade 431 on the inner circumferential surface thereof.

The cleaning screw conveyor 400 is rotatably installed inside the friction cleaning housing 430 together with the transfer screw 420 and has a rotating friction shaft 440 having a rotating friction blade 441 on the outer circumferential surface thereof. Respectively.

The cleaning screw conveyor 400 has a resilient stopper 450 that blocks the discharge port 432 of the friction cleaning housing 430 by the elastic force of the spring 451.

According to this configuration, when the pad chip or powder separated from the sheave screen 300 is transferred to the right side of the drawing by the transfer screw 420 and enters the inside of the friction cleaning housing 430, the rotation friction shaft 440 And is frictionally cleaned while being stirred and rubbed by the rotary friction wing 441 and the fixed friction wing 431.

In this process, when the amount of the chip or powder is increased in the friction cleaning housing 430, the elastic stopper 450 blocking the friction cleaning housing 430 due to the volumetric pressure is retreated by the compression of the spring 451, The housing 430 is opened so that the frictionally cleaned pad or chip is discharged from the friction cleaning housing 430.

6 is an enlarged view of a rinsing unit and a centrifugal separator of a paper chip or powder cleaning apparatus according to the present invention.

Referring to FIG. 6, the rinsing unit 500 rinses the powder and rinsing water transferred from the cleaning screw conveyor 400 by vertically sweeping the rinsing water.

The rinsing unit 500 includes a rinsing tank 510 and a third stirring impeller 520 for stirring the rinsing water in the rinsing tank 510. The third stirring impeller 520 may include an upper stirring impeller 521 and a lower stirring impeller 522.

The centrifugal separator 600 serves to dewater the water contained in the paper chips or the powder transferred from the rinse unit 500 by a centrifugal separation method.

A water dispensing tank 610 for storing the water discharged from the centrifugal separator and returning the water to the rinsing unit 500 and the primary washing unit 100 may be provided in the lower part of the centrifuge 600.

The water distribution tank 610 is partitioned into a left tank 612 and a right tank 613 by partition walls 611 having a predetermined height. The right tank 613 is filled with water discharged from the centrifugal separator 600 and the left tank 612 is filled with water over the partition 611 when the water in the right tank 613 reaches the full water level .

A left return pipe 614 is connected to the left tank 612 of the water distribution tank 610 so as to return the water therein to the rinsing tank 510. In the right tank 613, A right return pipe 615 is connected to return the water inside the washing tub 110 to the outside. The return pipes 614 and 615 are configured to be opened and closed by an on-off valve 616.

The water collected in the water dispensing tank 610 can return water to the rinsing tank 510 and the external washing tank 110 when all the on-off valves 616 are opened.

If the opening degree of the opening / closing valve on the right return pipe 615 side is adjusted, the rinsing tank 510 and the outside The amount of water returned to the washing tub 110 can be appropriately adjusted.

Referring again to FIG. 1, the waste PET bottles or powder cleaning apparatus according to the present invention may include a dryer 800 for drying the paper chips or powder centrifuged by the centrifugal separator 600 , And a packing unit 900 for packing the dried packaged chips or powder into the packing bag 910. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: primary washing unit 110: outer washing tank
120: Contamination receptacle 130: Internal washing tank
200: second washing unit 210: second washing tank
220: second stirring impeller 230: radiator
300: Sheave screen 310: Body
320: Screen membrane 330: Return pipe
400: Cleaning screw conveyor 410: Screw housing
420: Feed screw 430: Friction wash housing
440: rotating friction shaft 450: elastic stopper
500: rinsing unit 510: rinsing tank
520: Third stirring impeller 600: Centrifuge
610: Water dispensing tank 700: Path control means
710: main transfer line 720: bypass line
800: dryer 900: packaging unit

Claims (6)

A device for cleaning a powdered chip or powder of waste PET bottles for washing powder generated in the course of pulverization with a waste paper pet chip or a patent chip,
A primary washing unit for washing the mixed solution of the pet chip or the powder and the washing water while flowing the mixture up and down, and overflowing and discharging the contaminated floating matter generated in the washing process;
A secondary cleaning unit for cleaning the mixed solution of the pad or chip washed by the primary cleaning unit and the washing water warmed by the radiator while flowing up and down;
A sieve screen for separating the mixed liquid supplied from the secondary washing unit into a piece of pat chips or powder and washing water, and then returning washing water to the secondary washing unit;
A cleaning screw conveyor for transferring the pat chips or powder separated from the sheave screen and performing rubbing cleaning by friction contact;
A rinsing unit for rinsing the rinsing water by vertically sweeping the rinsing water and the pat chips or powder transferred from the cleaning screw conveyor; And
And a centrifugal separator for centrifugally separating the rinse water from the rinse unit,
The primary cleaning unit comprises: an outer cleaning tank having a pet chip or a powder outlet; A dirty water receiver for receiving a floating matter that overflows to an upper portion of the outer washing tank while being installed at an upper edge of the outer washing tank and discharging the floated water to the outside; An inner washing tank installed on the upper side of the outer washing tank and discharging the pet chip or powder supplied to the upper side to the outer washing tank through a lower portion; And a first stirring impeller installed in the outer washing tank and the inner washing tank, respectively,
The cleaning screw conveyor comprises:
A screw housing disposed at a lower portion of the sheave screen;
A feed screw rotatably installed in the screw housing;
A friction wash housing installed at an outlet side of the screw housing and having a fixed friction blade on an inner circumferential surface thereof;
A rotary friction shaft rotatably installed in the friction cleaning housing together with the feed screw and having a rotating friction blade on an outer circumferential surface thereof; And
And a resilient stopper elastically blocking the discharge port of the friction cleaning housing by the elastic force of the spring.
delete The method according to claim 1,
The secondary cleaning unit includes:
Secondary washing tank;
A second agitation impeller rotatably installed in the secondary washing tank; And
And a radiator installed inside the secondary washing tank and heating the washing water in the secondary washing tank while circulating the heating medium in the inside of the secondary washing tank.
delete The method according to claim 1,
Further comprising a water dispensing tank disposed at a lower portion of the centrifuge to store water discharged from the centrifugal separator and return the water to the rinsing unit and the primary washing unit.
The method according to claim 1,
Further comprising: a dryer for drying the centrifugal pad or powder; and a packaging unit for packaging the dried pad or powder into a wrapping bag.
KR1020150107282A 2015-07-29 2015-07-29 PET chips or powder cleaning apparatus of waste plastic bottles KR101760781B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109049416A (en) * 2018-08-28 2018-12-21 王泽亮 A kind of waste plastic sandy soil separation equipment workflow
KR20240037648A (en) 2022-09-15 2024-03-22 임윤섭 Adhesive cleaning device for recycled PET bottles

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