CN111037785A

CN111037785A - PET bottle piece cleaning machine

Info

Publication number: CN111037785A
Application number: CN201911166781.0A
Authority: CN
Inventors: 岑科超; 王君明; 陈辉; 程琳
Original assignee: Ningbo Chaotai New Material Co Ltd
Current assignee: Ningbo Chaotai New Material Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-04-21

Abstract

The invention discloses a PET bottle flake cleaning machine which comprises a unpacking device, a floating device, a rinsing device, a flushing device and a drying device. The semi-clean bottle piece is unpacked by a unpacking machine, sent into a floating washing device by an unpacking conveyor belt to remove metal soil and other high-density impurities in the PET bottle piece, automatically salvaged and washed PET bottle piece is sent into a rinsing device by a second air blower, rinsed by high-temperature alkaline water to remove impurities such as glue and the like attached to the PET bottle piece, automatically salvaged and sent into a hot water flushing device by a third feeding air blower, and the PET bottle piece is thoroughly cleaned by high-temperature high-pressure hot water to meet the requirement of high-quality PET bottle piece. The cleaned PET bottle flakes are sent into a drying device by a fourth air blower, the drying time is automatically adjusted by a humidity detection system, and the PET bottle flakes are sent to a discharge port for standby after meeting the requirement of the humidity of high-quality PET bottle flakes. The process is simple, the manual operation is convenient, the water waste is less, the noise is small, the occupied area is small, and the quality of the sorted PET bottle chips is high.

Description

PET bottle piece cleaning machine

Technical Field

The invention relates to the field of resource recovery, in particular to a plastic bottle recovery process, and specifically relates to a PET bottle chip cleaning machine.

Background

The chemical formula of the polyethylene terephthalate is-OCH 2-CH2OCOC6H4 CO-English name: polyethylene terephthalate, abbreviated as PET, is a high polymer and is obtained by the dehydration condensation reaction of ethylene terephthalate. The ethylene terephthalate is obtained by esterification reaction of terephthalic acid and ethylene glycol. PET is a milky white or pale yellow, highly crystalline polymer with a smooth, glossy surface. The high-temperature-resistant and high-frequency-resistant composite material has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the electrical insulation property is excellent, even under high temperature and high frequency, the electrical property is still good, but the corona resistance is poor, and the creep resistance, the fatigue resistance, the friction resistance and the dimensional stability are good.

In China, because the recovery of PET bottles is just started, various technical researches and equipment are relatively lagged behind, and the importance of consumers on the recovery of the PET bottles is not enough, so that various wastes are mixed in the recovered PET bottles. Thereby having a great influence on further processing.

Disclosure of Invention

The invention aims to solve the technical problem of providing the PET bottle flake cleaning machine which is integrally and fully automatically designed, has simple flow, convenient manual operation, water saving, low noise and small occupied area, and can sort out high-quality PET bottle flakes which are free of dust, soil, impurities and labels and are free of other types of plastic doping (such as PVC plastic bottle flakes).

In order to solve the technical problems, the invention is realized by the following technical scheme:

a PET bottle flake cleaning machine comprises an external shell, and an unpacking device, a floating device, a rinsing device, a flushing device, a drying device and a control device which are arranged in the shell; the control device comprises a controller arranged on the outer side of the top of the shell, and the unpacking device, the floating device, the rinsing device and the drying device are electrically connected with the controller respectively; the rinsing device is arranged on one side of the flotation device, the flushing device is arranged on the lower part of the rinsing device, and the drying device is arranged on one side of the flushing device; a feeding port is formed in one side of the top of the shell, and a discharging port is formed in one side of the bottom of the shell; the unpacking device comprises an unpacking conveying belt and an unpacking machine; the floating device comprises a floating pool arranged below the unpacking conveyor belt, and a stirring device, a floating liquid circulating and filtering device, a floating liquid level sensor and a floating conveyor belt are arranged in the floating pool; the rinsing device comprises a rinsing pool, a rinsing water filtering tank, a rinsing circulating water pipe, a rinsing circulating booster pump, a temperature control device, a rinsing liquid level sensor, a PH value sensor and a rinsing conveying belt; the washing device comprises a washing conveying belt, a hot water spray pipe and a washing heating and pressurizing device, and the washing heating and pressurizing device comprises a reservoir, a heating device and a washing circulating device; the drying device comprises a drying bin; the controller is provided with an alarm; the outer side of the shell is provided with a heat insulation layer and a sound insulation layer; the unpacking conveyor belt, the floating conveyor belt, the rinsing conveyor belt and the washing conveyor belt are all driven and conveyed by a conveyor belt motor.

Furthermore, one end of the unpacking conveyor belt extends out of the feeding port and is used for placing bottle piece packages to be cleaned, and the unpacking machine is arranged above the unpacking conveyor belt and is used for unpacking the bottle piece packages and pouring PET bottle pieces in the bottle piece packages into the unpacking conveyor belt.

Furthermore, the flotation solution is arranged in the flotation solution tank; an unpacking and feeding groove is formed between the flotation tank and the unpacking and conveying belt, one end of an inlet of the unpacking and feeding groove is arranged at the bottom of one end of the unpacking and conveying belt, and one end of an outlet of the unpacking and feeding groove is arranged at the top of the flotation tank; a first feeding air blower is arranged above one end of an inlet of the unpacking feeding groove; the stirring device comprises a stirring motor and stirring blades which are arranged on one side of the flotation tank; the device comprises a floating liquid circulating filter device, a floating liquid circulating water pipe and a floating water filtering tank, wherein the water pumping valve is arranged at the bottom of the floating pool and is connected with a top water inlet of the floating water filtering tank through a pipeline; a water suction pump is arranged on the lotion circulating water pipe; the floating water filtering tank is provided with an impurity filtering layer and an impurity cleaning window.

Furthermore, a rinsing feeding groove is arranged below one side, close to the floating conveying belt, of the rinsing pool, the rinsing conveying belt is arranged on the other side of the rinsing pool, and a second feeding air blower is arranged above the rinsing feeding groove; the temperature control device comprises a rinsing heater arranged at the bottom in the rinsing pool; two ends of the rinsing circulating water pipe are respectively connected with two ends of the rinsing pool, the rinsing water filter tank and the rinsing circulating booster pump are respectively arranged in the rinsing circulating water pipe, and a rinsing filter layer is arranged in the rinsing water filter tank; the rinsing liquid level sensor and the PH value sensor are arranged on the inner wall of the rinsing pool and are respectively and electrically connected with the controller; an alkaline water rinsing liquid is arranged in the rinsing tank, one end of the rinsing conveyor belt is arranged below the liquid level of the alkaline water rinsing liquid, the other end of the rinsing conveyor belt extends out of the edge of the other side of the rinsing tank, and a third feeding air blower is arranged above the rinsing conveyor belt.

Furthermore, the flushing conveyor belt is horizontally arranged above the water storage tank, the hot water spray pipe is horizontally arranged above the flushing conveyor belt, a baffle is downwards arranged at the end of the hot water spray pipe, and a high-pressure nozzle is downwards arranged at the bottom of the hot water spray pipe; a washing feeding chute extending to one side of the rinsing device is arranged on one side of the washing conveyor belt in an upward mode; the flushing circulating device comprises a flushing booster water pump, a flushing filter water tank and a flushing filter circulating water pipe which are arranged at the bottom of the reservoir, the flushing booster water pump and the flushing filter water tank are communicated with the reservoir through one end of the flushing filter pipe, and the other end of the flushing filter pipe extends upwards to be communicated with the hot water spray pipe; one end of the washing conveyor belt extends to the upper part of the drying device; the heating device comprises a heater arranged at the bottom of the reservoir, and the heater is connected with a heating pipe fixed at the bottom in the reservoir; and a water storage temperature sensor and a water storage liquid level sensor are arranged in the water storage tank.

Furthermore, a drying feeding groove extending to one end corresponding to the washing conveyor belt is formed in the top of the drying bin, and a fourth feeding air blower is arranged above the drying feeding groove; a discharge valve is arranged at the bottom of the drying bin and communicated with the discharge hole in the shell; a drying heating device and a temperature and humidity detection device are arranged in the drying bin, the drying heating device comprises a drying heater and a radiating fan, and a protective filter screen support for separating the drying heating device and the PET bottle sheet is arranged on the outer side of the drying heating device; the top of the drying bin is provided with a ventilating filter hole; the drying heater comprises a heating pipe arranged around the inner wall of the drying bin; the temperature and humidity detection device comprises a drying temperature sensor and a drying humidity sensor, and a quantity sensor is arranged on the inner wall of the drying bin.

Preferably, a rotary serpentine rinsing channel is arranged on one side of the rinsing tank, which is adjacent to the rinsing feeding groove, and the rinsing conveyor belt is arranged on the other side of the rinsing tank.

Preferably, the flotation solution comprises a NaCl solution with a density of 1.1 to 1.2; the floating washing conveyor belt is an inclined conveyor belt, one end of the inclined conveyor belt is immersed below the liquid level of the floating washing liquid, and the other end of the inclined conveyor belt extends to the outer side of the edge of the floating washing pool; the inclination angle of the floating conveyor belt is 15-45 degrees.

Preferably, the inclination angle of the rinsing conveyor belt is 25-60 degrees; the temperature of the alkaline water rinsing liquid is 80-90 ℃.

Preferably, the water temperature of the water reservoir is 80-90 degrees

Compared with the prior art, the invention has the following beneficial effects

1. The PET bottle piece package is disassembled through the unpacking machine, PET bottle pieces to be cleaned are scattered onto the unpacking conveyor belt, and the PET bottle pieces to be cleaned conveyed by the unpacking conveyor belt through the first feeding air blower are blown into the floating pond at the bottom of the unpacking conveyor belt through the unpacking feeding groove.

2. The PET bottle flakes floating on the upper layer of the liquid level are pushed to move towards the inclined floating washing conveyor belt by stirring on the water surface, and are fished up by the floating washing conveyor belt to be conveyed to a rinsing device; the angle of flotation conveyer belt can be adjusted according to the demand, the component according to different batches of PET bottle piece is different, change the inclination of flotation conveyer belt, density is not conform to the well lower floor that other PET bottle pieces of requirement probably fall into the flotation tank liquid level like this, and density meets the requirements PET bottle piece floats in the flotation tank liquid level or suspends the well upper strata at the flotation tank liquid level, be promoted to the flotation conveyer belt by the produced thrust of water that agitating unit moved easily, and formed a prefilter to the PET bottle piece at the flotation in-process.

3. Bottle piece through the flotation just owing to be stained with liquid, be difficult for landing to rinsing pan feeding groove from the flotation conveyer belt, the top in rinsing pan feeding groove is equipped with second pay-off air-blower, not only will have the wind of uniform temperature to blow to PET bottle piece, can carry out the preliminary treatment to PET bottle piece, make PET bottle piece be heated in advance, help the drying on PET bottle piece surface, accelerate its landing to the rinsing pond of rinsing pan feeding groove below, and can get into high temperature soda with more suitable temperature, thereby promote the rinsing efficiency of rinsing link.

4. Through rinsing circulation booster pump and the rinsing circulating water pipe of rinsing pond, make the high temperature buck in the rinsing pond form and circulate the flow ring, the snakelike rinsing pond of rotation has increased the rinsing stroke of PET bottle piece in rinsing pond high temperature buck, and the high-speed rivers that form through the snakelike rivers passageway of rotation erode make PET bottle piece can be by more abundant and high-efficient of rinsing. The screen type rinsing conveyor belt can drag up the floating PET bottle chips by means of the flowing direction of water flow circulation and transmit and slide the PET bottle chips to the washing conveyor belt.

5. The washing booster water pump sprays high-temperature hot water in the reservoir from the high-pressure nozzle to wash PET bottle pieces on the conveyor belt downwards through washing the filtering and circulating water pipe, the end part of the hot water spray pipe is provided with a baffle downwards, PET bottle pieces on the conveyor belt are conveniently and evenly paved in the conveying process of the washing conveyor belt, and the washing efficiency is effectively improved.

6. The protection filter screen support in dry storehouse separates dry heating device and PET bottle piece to on evenly diffusing the PET bottle piece on every side with dry heater's heat through radiator fan, its dry degree of further acceleration, ventilative filtration pore can discharge vapor, keeps the dry degree in the dry storehouse, improves the drying efficiency in dry storehouse.

7. The integrated full-automatic design has the advantages of simple flow, convenient manual operation, water saving, low noise, small occupied area and high quality of sorted pet bottle chips. Therefore, the production and cleaning time is saved, the environmental pollution is reduced, the noise pollution is reduced, the production cost is saved, the cleaning efficiency is improved, in addition, the cleaning effect of the PET bottle chip of the whole cleaning process is good, the obtained PET bottle chip can be cleaned at one time, and the energy is saved. The whole process of cleaning the bottle flakes by using circulating water reduces environmental pollution and greatly saves labor cost. .

Drawings

FIG. 1 is a schematic structural view of the components of a PET bottle chip cleaning machine according to the present invention;

FIG. 2 is a schematic diagram of the construction of the flotation device of FIG. 1;

FIG. 3 is a schematic view showing the structure of the rinsing apparatus of FIG. 1;

FIG. 4 is a schematic view of the flushing device of FIG. 1;

FIG. 5 is a schematic view of the drying apparatus of FIG. 1;

FIG. 6 is a schematic structural view of the insulation layer and the heat insulating layer on the outer side of the shell in FIG. 1;

FIG. 7 is a schematic view showing the structure of a rotary serpentine rinsing channel of a rinsing tank according to a second embodiment of the present invention.

Reference numerals

The device comprises a shell 101, a controller 102, a feeding port 103, a discharging port 104, a discharging containing box 105, a heat insulating layer 106, a sound insulating layer 107, a conveyor belt motor 108 and a fixed bracket 109;

the device comprises an unpacking device 201, an unpacking conveyor belt 202, an unpacking machine 203, a mechanical arm 204, a cutter 205, an unpacking feeding groove 206 and a first feeding blower 207;

the device comprises a flotation device 301, a flotation tank 302, a stirring motor 303, stirring blades 304, a flotation liquid level sensor 305, a water pumping valve 306, a flotation liquid circulating water pipe 307, a flotation water filtering tank 308, a flotation conveyor belt 309, a water pumping pump 310, an impurity cleaning window 311 and a second feeding blower 312;

a rinsing device 401, a rinsing pool 402, a rinsing water filtering tank 403, a rinsing circulating water pipe 404, a rinsing circulating booster pump 405, a temperature control device 406, a rinsing liquid level sensor 407, a pH value sensor 408, a rinsing conveyor belt 409, a rinsing feeding tank 410 and a rinsing heater 411;

a flushing device 501, a flushing conveyor belt 502, a hot water spray pipe 503, a water storage tank 504, a flushing circulating device 505, a third air blower 506, a baffle 507, a high-pressure nozzle 508, a flushing feeding chute 509, a flushing booster water pump 510, a flushing filter water tank 511, a flushing filter circulating water pipe 512, a warmer 513, a warming pipe 514, a water storage temperature sensor 515 and a water storage level sensor 516;

the drying device 601, the drying bin 602, the drying feeding groove 603, the fourth feeding blower 604, the discharging valve 605, the drying heater 606, the heat radiation fan 607, the protective filter screen support 608, the air permeable filter hole 609, the heating pipe 610, the drying temperature sensor 611, the drying humidity sensor 612 and the quantity sensor 613.

Detailed description of the preferred embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention:

as shown in fig. 1-6, the PET bottle flake cleaning machine provided by the invention comprises an external housing 101, and an unpacking device 201, a floating device 301, a rinsing device 401, a washing device 501, a drying device 601 and a control device which are arranged inside the housing 101.

The control device comprises a controller 102 arranged on the outer side of the top of the shell 101, and the controller 102 is arranged on the outer side of the top of the shell 101, and the unpacking device 201, the floating device 301, the rinsing device 401 and the drying device 601 are respectively electrically connected with the controller 102; the rinsing device 401 is arranged at one side of the floating device 301, the washing device 501 is arranged at the lower part of the rinsing device 401, and the drying device 601 is arranged at one side of the washing device 501; a feeding port 103 is formed in one side of the top of the shell 101, and a discharging port 104 is formed in one side of the bottom of the shell 101. The outer side of the casing 101 is provided with an insulating layer 106 and a sound insulating layer 107.

As shown in fig. 1 and 2, in particular, the unpacking machine 203 comprises an unpacking conveyor belt 202 and an unpacking device 201; the unpacking machine 203 is not a mature product in the prior art at present, and most of the unpacking machines adopt a manipulator 204 and a cutter 205 to cut the packing paper and tear or vibrate the packing paper so as to scatter the PET bottle flakes inside onto the unpacking conveyor belt 202, and can also manually dismantle the unpacking machine 203 in advance and directly pour the PET bottle flakes in the bag onto the unpacking conveyor belt 202. In the embodiment of the present invention, it is preferable to perform unpacking using a mature unpacking machine 203. Specifically, one end of the unpacking conveyor belt 202 extends out of the feeding port 103 and is used for placing bottle piece bags to be cleaned, and the unpacking machine 203 automatically unpacks the PET bottle piece bags placed by the conveyor belt and separates the packaging bags from the PET bottle pieces. Specifically, the unpacking machine 203 is disposed above the unpacking conveyor 202, and is configured to unpack the package of bottle chips and pour the PET bottle chips in the package of bottle chips into the unpacking conveyor 202 by the robot 204 and the cutter 205. The unpacked PET bottle chips are sent to a pipeline by an unpacking conveyor belt 202 and sent to the next device by a blower. The PET bottle slice package is a purchased half-clean PET bottle slice package which is cleaned primarily.

As shown in fig. 2, the flotation device 301 comprises a flotation tank 302 arranged below the bale breaking conveyor 202, and a stirring device, a flotation liquid circulating and filtering device, a flotation liquid level sensor 305 and a perforated screen type flotation conveyor 309 are arranged in the flotation tank 302; an unpacking feeding groove 206 is arranged between the flotation tank 302 and the unpacking conveyor belt 202, one end of an inlet of the unpacking feeding groove 206 is arranged at the bottom of one end of the unpacking conveyor belt 202, and one end of an outlet of the unpacking feeding groove 206 is arranged at the top of the flotation tank 302; a first feeding blower 207 is arranged above one end of an inlet of the unpacking feeding groove 206; the unpacked PET bottle chips are conveyed to the unpacking feeding groove 206 by the unpacking conveyor belt 202, and are conveyed to the flotation tank 302 by a first feeding blower 207 through wind power. The stirring device comprises a stirring motor 303 and stirring blades 304 which are arranged on one side of the flotation tank 302; the circulating filter device for the floating washing liquid comprises a water suction pump 310, a water suction valve 306, a floating washing liquid circulating water pipe 307 and a floating washing water filtering tank 308, wherein the water suction valve 306 is arranged at the bottom of the floating washing tank 302 and is connected with a top water inlet of the floating washing water filtering tank 308 through a pipeline, a bottom water outlet of the floating washing water filtering tank 308 is connected with one end of the bottom of the floating washing liquid circulating water pipe 307, and one end of the top of the floating washing liquid circulating water pipe 307 is connected with the water suction pump 310 and extends to the upper part of the floating washing tank 302; the floating water filtering tank 308 is provided with an impurity filtering layer and an impurity cleaning window 311, the impurity filtering layer is preferably provided with a built-in filtering filter element, when the filtering tank needs to be cleaned regularly, the impurity cleaning window 311 is opened, the filtering filter element is taken out and cleaned, and the filtering tank is installed after being cleaned, and the filtering structure, the water filling port (hole), the impurity cleaning port (window) and the filter element in the floating water filtering tank 308 are all in the prior art or can be realized by purchasing the prior finished product.

The floating washing pool 302 is internally provided with floating washing liquid for floating and washing the PET bottle flakes. The supernatant comprises NaCl solution with density of 1.1-1.2; the float conveyor 309 is an inclined conveyor, one end of which is immersed below the liquid level of the float solution and the other end of which extends outside the edge of the float bath 302; the flotation conveyer belt 309 can drive the PET bottle flakes floating on the upper layer of the water surface to leave the flotation tank 302 during operation, the inclination angle of the flotation conveyer belt 309 is 15-45 degrees, and the preferred inclination angle is 15 degrees in the embodiment. The PET bottle flakes floating on the upper layer of the liquid surface are pushed to move towards the inclined floating and washing conveyor belt 309 by the stirring device on the water surface, and are fished up by the floating and washing conveyor belt 309 to be conveyed to the rinsing device 401; the angle of flotation conveyer belt 309 can be adjusted according to the demand, the component according to different batches of PET bottle piece is different, change flotation conveyer belt 309's inclination, density is not conform to the well lower floor that other PET bottle pieces of requirement probably fall into flotation tank 302 liquid level like this, and density conforms to the PET bottle piece of requirement and floats in flotation tank 302 liquid level or suspension in the well upper strata of flotation tank 302 liquid level, be promoted to flotation conveyer belt 309 by the produced water thrust of agitating unit motion easily, and formed a prefiltration to the PET bottle piece at the flotation in-process. The angle adjustment of the float belt 309 is achieved by a lifting design of one end, and a movable support (not shown) or a cylinder support (not shown) which can be lifted is arranged at one end, and the other end is a fixed support 109 with a belt motor 108 and fixed between the two sides of the housing.

As shown in fig. 3, the rinsing device 401 includes a rinsing tank 402, a rinsing water filter tank 403, a rinsing circulation water pipe 404, a rinsing circulation booster pump 405, a temperature control device 406, a rinsing liquid level sensor 407, a PH sensor 408, and a mesh-type rinsing conveyor 409; a rinse tank 402. A rinsing feeding groove 410 is arranged below one side of the rinsing tank 402 close to the floating conveying belt 309, the rinsing conveying belt 409 is arranged on the other side of the rinsing tank 402, and a second feeding air blower 312 is arranged above the rinsing feeding groove 410; second pay-off air-blower 312, not only will have the wind-blowing of uniform temperature to PET bottle piece, can carry out the preliminary treatment to PET bottle piece, make PET bottle piece be heated in advance, help the drying on PET bottle piece surface for its landing is to rinsing pond 402 of rinsing pan feeding groove 410 below in, and can get into high temperature soda with more suitable temperature, thereby promotes the rinsing efficiency of rinsing link. The temperature control device 406 includes a rinsing heater 411 provided at the bottom in the rinsing tank 402; two ends of a rinsing circulating water pipe 404 are respectively connected with two ends of a rinsing pool 402, a rinsing water filter tank 403 and a rinsing circulating booster pump 405 are respectively arranged on the rinsing circulating water pipe 404 and are mutually communicated with the rinsing circulating water pipe, a rinsing filter layer is arranged in the rinsing water filter tank 403, the structure of the rinsing water filter tank 403 is the same as that of the rinsing water filter tank 308, and the rinsing water filter tank 403 is filtered by a filter element and can be provided with an impurity cleaning window for cleaning impurities; a rinsing liquid level sensor 407 and a pH value sensor 408 are arranged on the inner wall of the rinsing tank 402 and are respectively electrically connected with the controller 102; an alkaline water rinsing liquid is arranged in the rinsing tank 402, one end of the rinsing conveyor belt 409 is arranged below the liquid level of the alkaline water rinsing liquid, the other end of the rinsing conveyor belt 409 extends out of the edge of the other side of the rinsing tank 402, and a third feeding blower 506 capable of blowing and dropping the PET bottle chips conveyed to the end after rinsing to the outside and the lower part is arranged above the rinsing conveyor belt 409. The inclination angle of the rinsing conveyor belt 409 is 25-60 degrees; the temperature of the alkaline water rinsing liquid is 80-90 ℃. In this embodiment, the angle of inclination of the rinse belt 409 is preferably 30 °; preferably the alkaline rinse is at a temperature of 90 ℃.

As shown in fig. 4, the washing device 501 includes a mesh-type washing conveyor belt 502, a hot water spray pipe 503, and a washing warming and pressurizing device, and the washing warming and pressurizing device includes a water reservoir 504, a warming device, and a washing circulation device 505; the washing conveyor belt 502 is horizontally arranged above the water storage tank 504, the hot water spray pipe 503 is horizontally arranged above the washing conveyor belt 502, the end of the hot water spray pipe 503 is downwards provided with a baffle 507, and the bottom of the hot water spray pipe 503 is downwards provided with a high-pressure nozzle 508; a flushing feeding chute 509 extending to one side of the rinsing device 401 is arranged upwards on one side of the flushing conveyor belt 502; the flushing circulation device 505 comprises a flushing booster water pump 510, a flushing filter water tank 511 and a flushing filter circulation water pipe 512 which are arranged at the bottom of the reservoir 504, wherein the flushing booster water pump 510 and the flushing filter water tank 511 are communicated with the reservoir 504 through one end of a flushing filter pipe, and the other end of the flushing filter pipe extends upwards to be communicated with the hot water spray pipe 503; one end of the washing conveyor 502 extends above the drying device 601; the heating device comprises a heater 513 arranged at the bottom of the water reservoir 504, and the heater 513 is connected with a heating pipe 514 fixed at the bottom in the water reservoir 504; a water storage temperature sensor 515 and a water storage level sensor 516 electrically connected to the controller 102 are provided within the water reservoir 504. The water temperature of the reservoir 504 is 80 deg. -90 deg., and in this embodiment it is preferred that the water temperature of the reservoir 504 is 90 deg..

As shown in fig. 5, the drying device 601 includes a drying bin 602, a drying feeding groove 603 extending to a corresponding end of the washing conveyor 502 is disposed at a top of the drying bin 602, and a fourth feeding blower 604 is disposed above the drying feeding groove 603; a discharge valve 605 is arranged at the bottom of the drying bin 602, and the discharge valve 605 is communicated with a discharge hole 104 on the shell 101; a drying and heating device and a temperature and humidity detection device are arranged in the drying bin 602, wherein the drying and heating device comprises a drying heater 606 and a cooling fan 607, and a protective filter screen support 608 for separating the drying and heating device and the PET bottle pieces from each other is arranged on the outer side of the drying and heating device; the top of the drying bin 602 is provided with a ventilation filter hole 609; the drying heater 606 includes a heating pipe 610 disposed around the inner wall of the drying chamber 602; the temperature and humidity detecting device comprises a drying temperature sensor 611 and a drying humidity sensor 612, and a quantity sensor 613 is arranged at an inlet on the top of the inner wall of the drying bin 602. The protection filter screen support 608 of the drying bin 602 separates the drying and heating device from the PET bottle chips, and the heat emitted by the drying and heating device is uniformly diffused to the PET bottle chips around through the cooling fan 607, so that the drying degree of the PET bottle chips is further accelerated, the air-permeable filter holes 609 can discharge the water vapor evaporated on the surface of the PET bottle chips, the drying degree in the drying bin 602 is maintained, and the drying efficiency of the drying bin 602 is improved.

Further, the controller 102 is provided with an alarm electrically connected to each level sensor; the controller 102 will alert the operator to replenish the cleaning fluid once the fluid level is too low.

The unpacking conveyor belt 202, the floating conveyor belt 309, the rinsing conveyor belt 409 and the washing conveyor belt 502 are all controlled by the controller 102 to drive the conveyor belts to rotate by the conveyor belt motor 108, so that the PET bottle pieces are conveyed.

Specifically, the first feeding blower 207 feeds the PET bottle chips falling into the unpacking feeding groove 206 into the floating pond 302 with the built-in saline (NaCl solution) through wind power, and after being transversely stirred by the stirring device, the PET bottle chips are kept stand, impurities on the PET bottle chips are preliminarily washed away, and after being kept stand, the PET bottle chips on the middle layer are fished out by the obliquely-placed floating conveyor belt 309 and are fed into the rinsing feeding groove 410. Due to diffusion, the rinsed PET will be continuously transported out of the surface of the float conveyor 309 into the rinse feed tank 410. After the flotation tank 302 operates for a period of time, the impurities accumulated in the lower layer are sent to the flotation water filtering tank 308 outside the flotation tank 302 by starting the water suction pump 310 after being opened by the water suction valve 306, the impurities are filtered by the filter element in the tank, and the NaCl solution with the impurities filtered out flows into the flotation tank 302 through the water suction pump 310 and the flotation liquid circulating water pipe 307 for recycling. The impurities filtered in the water filtering tank 308 are accumulated to a certain degree and then cleaned through the impurity cleaning window 311.

The second feeding blower 312 blows the PET bottle chips falling from the rinsing feeding groove 410 down to the rinsing tank 402, the high-temperature alkaline water in the rinsing tank 402 drives the PET bottle chips to be rinsed in the rinsing tank 402, the rinsed high-temperature alkaline water filters the alkaline water in the rinsing tank 402 through the rinsing circulating water pipe 404 under the action of the rinsing water filtering tank 403 and the rinsing circulating booster pump 405, and the filter element in the rinsing water filtering tank 403 filters out impurities such as glue in the alkaline water, so that the alkaline water can be recycled. On the side of the outlet of the rinsing bath 402, the PET bottle chips are fished via an inclined rinsing conveyor belt 409 into a flushing inlet chute 509 and fall onto a mesh conveyor belt of the flushing device 501. The rinsing water filtering tank 403 is provided with an impurity cleaning window 311 and a water injection valve for injecting and supplementing a rinsing alkaline water solution, and the cleaning and water supplementing operation can be carried out by opening the shell 101. The inner wall of the hot water rinse tank 402 is provided with a rinse level sensor 407, and when the level of the rinse liquid is lowered to a certain level, the controller 102 will alert the operator to replenish the prepared rinse solution.

The rinsing heater 411 arranged at the bottom in the rinsing tank 402 can heat the PET bottle chips and the alkaline water to 80-90 ℃. The rinse solution in the rinse tank 402 is a high temperature alkaline water. After impurities are removed, the high-temperature alkaline water is pressurized by the rinsing circulation booster pump 405 and is sent to the feeding port 103 of the rinsing tank 402 again, and the high-temperature alkaline water flows in the rinsing tank to drive the PET bottle chips at the feeding port 103 to be rinsed. At the discharge port 104 of the rinsing device 401, the PET bottle chips and the high-temperature alkaline water can be separated by a perforated screen type rinsing conveyor belt 409 which is arranged at a certain inclination angle in the conveying process. The angle of inclination of the rinsing conveyor 409 is 25 to 60 degrees. A liquid level detection sensor is installed on the inner wall of the rinsing tank 402 in the rinsing device 401, and when the liquid level is lowered to a certain level, the controller 102 reminds the operator to replenish the prepared alkaline water. In addition, a pH value detection sensor is simultaneously installed on the inner wall of the rinsing pool 402 in the rinsing device 401, and when the pH value is reduced to a certain standard, the controller 102 reminds an operator to supplement alkali liquor with higher concentration. And a heat-insulating material layer is additionally arranged on one side of the outer wall of the rinsing pool 402.

The PET bottle pieces after being rinsed are conveyed to the end by the rinsing conveying belt 409 and then blown off by the third feeding blower 506, the PET bottle pieces are blocked by the rinsing feeding chute 509 and then fall onto the mesh-type rinsing conveying belt 502, when the rinsing conveying belt 502 runs, the PET bottle pieces are uniformly paved on the conveying surface of the mesh-type rinsing conveying belt 502 by the baffle 507 arranged at the bottom of the end part of one corresponding end of the hot water spray pipe 503, and when the PET bottle pieces pass through the region rinsed by the high-pressure nozzle 508, the PET bottle pieces on the conveying belt are rinsed and cleaned by the high-pressure nozzle 508 above the rinsing conveying belt 502 by using hot water in a part of the process of conveying the PET bottle pieces by the rinsing conveying belt 502, so that impurities such as alkaline solution on the PET surface and glue which is not separated are rinsed off. The distance between the high-pressure nozzles 508 in the flushing device 501 and the flushing conveyor belt 502 is 4 cm-20 cm, the high-pressure nozzles 508 are shower nozzles, and the number of the high-pressure nozzles 508 can be adjusted according to the number of the PET bottle chips treated at one time. The washed hot water flows into a water reservoir 504 at the bottom through the surface of a filter screen of a washing conveyor belt 502, is filtered by a washing heating and pressurizing device, is pressurized and heated, keeps the water temperature within a temperature range of 80-90 ℃, is sent into a high-pressure nozzle 508 to wash the PET bottle chips, and is recycled. The warming device comprises a warmer 513 arranged at the bottom of the water reservoir 504, and the warmer 513 is connected with a warming pipe 514 fixed at the bottom in the water reservoir 504; the temperature sensor is arranged in the water reservoir 504, and the temperature of the water tank is adjusted to be 80-90 ℃ by the heater 513 at the bottom of the water reservoir 504. The washing and filtering water tank 511 is provided with an impurity cleaning window 311 and a water injection valve for injecting water, and the cleaning and water supplementing operation can be carried out by opening the shell 101. A reservoir temperature sensor 515 and a reservoir level sensor 516 are provided in the reservoir 504 and are electrically connected to the controller 102. when the water level in the tank is below a certain level, the controller 102 will alert the operator to add fresh water. The exterior side wall of the water reservoir 504 is provided with a layer of insulating material (not shown).

After leaving the washing area of the high pressure nozzle 508, the washed PET bottle flakes are continuously conveyed by the surface of the screen-type washing conveyor belt 502, and after being naturally drained for a short time in the conveying process, the washed PET bottle flakes are blown by the wind power of the fourth feeding blower 604 to be fed into the material tank 603 of the drying bin 602. Simultaneously in order to increase the effect of driping, can be at the vibrator of washing installation on conveyer belt 502, will clear away the unnecessary moisture in PET bottle piece surface and be accelerated to driped.

The PET bottle chips fed into the drying chamber 602 are subjected to a humidity detection by a humidity sensor 612 disposed on the inner side wall of the drying chamber 602 at a temperature of 120-150 deg.C, and the drying time of the drying heater 606 is automatically set, wherein the drying temperature range is preferably 60-80 deg.C in this embodiment. When the drying heater 606 with the humidity less than 0.03% stops heating and drying, the discharge valve 605 at the bottom of the drying bin 602 is opened, the dried PET bottle chips fall into the discharge port 104 on the shell 101 for standby, and the flow is repeated after the undried PET bottle chips are fed into the drying bin 602. Preferably, in order to increase the speed of the dried PET bottle flakes falling into the discharge hole 104 of the housing 101, a fifth blower (not shown) for blowing air in the direction of the discharge valve 605 may be additionally provided in the drying chamber 602. A feeding valve (not shown) communicated with the drying and feeding groove 603 is arranged at the inlet of the top of the drying bin 602, a quantity sensor 613 for detecting the quantity of the PET bottle chips is arranged on the inner wall of the inlet of the top of the drying bin 602, when the quantity of the PET bottle chips in the drying bin 602 reaches a certain standard, the feeding valve is closed, and meanwhile, the unpacking device 201, the floating washing device 301, the rinsing device 401 and the washing device 501 stop working temporarily. After the drying operation of the drying chamber 602 is finished, the unpacking device 201, the floating device 301, the rinsing device 401 and the washing device 501 all start to operate normally.

Referring to fig. 7, a second embodiment of the present invention, in which a rotary serpentine rinsing channel is provided on one side of a rinsing tank 402 adjacent to a rinse inlet tank 410, and a rinsing conveyor is provided on the other side of the rinsing tank. The labyrinth type rotary snake-shaped rinsing water pool can form flowing circulation of high-temperature alkaline washing liquor in the rinsing pool 402 through the rinsing circulation booster pump 405 and the rinsing circulation water pipe 404 of the rinsing pool 402, so that the PET bottle chips form a longer rotary reciprocating rinsing process in the high-temperature alkaline water in the rinsing pool 402, a high-speed water flow is formed through a rotary snake-shaped reciprocating water flow channel, and the PET bottle chips can be rinsed more fully and efficiently by the impact of the high-speed water flow. The screen type rinsing conveyor belt 409 can drag up the floating PET bottle chips by means of the flowing direction of the water flow circulation and transmit the PET bottle chips to the rinsing conveyor belt 502 to enter the next link. It should be noted that all the conveyors in the present invention are driven by the conveyor motor 108, and all the components are fixed in the housing by the fixing bracket 109.

The PET bottle flake cleaning machine provided by the invention is integrally and fully automatically designed, the flow is simple, the manual operation is convenient, the water is saved, the noise is low, the occupied area is small, and the quality of the sorted PET bottle flakes is high. Therefore, the production and cleaning time is saved, the environmental pollution is reduced, the noise pollution is reduced, the production cost is saved, the cleaning efficiency is improved, in addition, the cleaning effect of the PET bottle flake of the whole cleaning process is good, the PET bottle flake with high quality can be obtained by one-time cleaning, and the energy is saved. The whole process uses circulating water to clean the bottle flakes, thereby reducing the environmental pollution. In addition, the noise insulation device arranged outside the device effectively reduces noise pollution. The operator only needs to add the solution consumed by the rinsing and flushing of the floating washing, and the full automation saves labor. And the related equipment of the whole process is convenient to install, the occupied area is small, and the cost is saved. And can be through categorised letter sorting equipment such as look selection machine with the PET bottle piece packing or the bagging-off of classifying, the bottle piece of different grade type gets into different tracks and packs and can be used to multiple other special use, resource utilization is high. Therefore, the method has better economic benefit and market prospect and is suitable for popularization and application.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a PET bottle piece cleaning machine which characterized in that: comprises an external shell, and an unpacking device, a floating device, a rinsing device, a washing device, a drying device and a control device which are arranged in the shell; the control device comprises a controller arranged on the outer side of the top of the shell, and the unpacking device, the floating device, the rinsing device and the drying device are electrically connected with the controller respectively; the rinsing device is arranged on one side of the flotation device, the flushing device is arranged on the lower part of the rinsing device, and the drying device is arranged on one side of the flushing device; a feeding port is formed in one side of the top of the shell, and a discharging port is formed in one side of the bottom of the shell; the unpacking device comprises an unpacking conveying belt and an unpacking machine; the floating device comprises a floating pool arranged below the unpacking conveyor belt, and a stirring device, a floating liquid circulating and filtering device, a floating liquid level sensor and a floating conveyor belt are arranged in the floating pool; the rinsing device comprises a rinsing pool, a rinsing water filtering tank, a rinsing circulating water pipe, a rinsing circulating booster pump, a temperature control device, a rinsing liquid level sensor, a PH value sensor and a rinsing conveying belt; the washing device comprises a washing conveying belt, a hot water spray pipe and a washing heating and pressurizing device, and the washing heating and pressurizing device comprises a reservoir, a heating device and a washing circulating device; the drying device comprises a drying bin; the controller is provided with an alarm; the outer side of the shell is provided with a heat insulation layer and a sound insulation layer; the unpacking conveyor belt, the floating conveyor belt, the rinsing conveyor belt and the washing conveyor belt are all driven and conveyed by a conveyor belt motor.

2. The PET bottle flake cleaning machine of claim 1, wherein; one end of the unpacking conveyor belt extends out of the feeding port and is used for placing bottle slice packages to be cleaned, and the unpacking machine is arranged above the unpacking conveyor belt and is used for unpacking the bottle slice packages and pouring PET bottle slices in the bottle slice packages into the unpacking conveyor belt.

3. The PET bottle flake cleaning machine of claim 1, wherein: the flotation solution is arranged in the flotation tank; an unpacking and feeding groove is formed between the flotation tank and the unpacking and conveying belt, one end of an inlet of the unpacking and feeding groove is arranged at the bottom of one end of the unpacking and conveying belt, and one end of an outlet of the unpacking and feeding groove is arranged at the top of the flotation tank; a first feeding air blower is arranged above one end of an inlet of the unpacking feeding groove; the stirring device comprises a stirring motor and stirring blades which are arranged on one side of the flotation tank; the device comprises a floating liquid circulating filter device, a floating liquid circulating water pipe and a floating water filtering tank, wherein the water pumping valve is arranged at the bottom of the floating pool and is connected with a top water inlet of the floating water filtering tank through a pipeline; a water suction pump is arranged on the lotion circulating water pipe; the floating water filtering tank is provided with an impurity filtering layer and an impurity cleaning window.

4. The PET bottle flake cleaning machine of claim 1, wherein: a rinsing feeding groove is formed in the lower portion, close to the floating conveying belt, of one side of the rinsing pool, the rinsing conveying belt is arranged on the other side of the rinsing pool, and a second feeding air blower is arranged above the rinsing feeding groove; the temperature control device comprises a rinsing heater arranged at the bottom in the rinsing pool; two ends of the rinsing circulating water pipe are respectively connected with two ends of the rinsing pool, the rinsing water filter tank and the rinsing circulating booster pump are respectively arranged in the rinsing circulating water pipe, and a rinsing filter layer is arranged in the rinsing water filter tank; the rinsing liquid level sensor and the PH value sensor are arranged on the inner wall of the rinsing pool and are respectively and electrically connected with the controller; an alkaline water rinsing liquid is arranged in the rinsing tank, one end of the rinsing conveyor belt is arranged below the liquid level of the alkaline water rinsing liquid, the other end of the rinsing conveyor belt extends out of the edge of the other side of the rinsing tank, and a third feeding air blower is arranged above the rinsing conveyor belt.

5. The PET bottle flake cleaning machine of claim 1, wherein: the washing conveyor belt is horizontally arranged above the water storage tank, the hot water spray pipe is horizontally arranged above the washing conveyor belt, a baffle is downwards arranged at the end of the hot water spray pipe, and a high-pressure nozzle is downwards arranged at the bottom of the hot water spray pipe; a washing feeding chute extending to one side of the rinsing device is arranged on one side of the washing conveyor belt in an upward mode; the flushing circulating device comprises a flushing booster water pump, a flushing filter water tank and a flushing filter circulating water pipe which are arranged at the bottom of the reservoir, the flushing booster water pump and the flushing filter water tank are communicated with the reservoir through one end of the flushing filter pipe, and the other end of the flushing filter pipe extends upwards to be communicated with the hot water spray pipe; one end of the washing conveyor belt extends to the upper part of the drying device; the heating device comprises a heater arranged at the bottom of the reservoir, and the heater is connected with a heating pipe fixed at the bottom in the reservoir; and a water storage temperature sensor and a water storage liquid level sensor are arranged in the water storage tank.

6. The PET bottle flake cleaning machine of claim 1, wherein: a drying feeding groove extending to one end corresponding to the washing conveyor belt is formed in the top of the drying bin, and a fourth feeding air blower is arranged above the drying feeding groove; a discharge valve is arranged at the bottom of the drying bin and communicated with the discharge hole in the shell; a drying heating device and a temperature and humidity detection device are arranged in the drying bin, the drying heating device comprises a drying heater and a radiating fan, and a protective filter screen support for separating the drying heating device and the PET bottle sheet is arranged on the outer side of the drying heating device; the top of the drying bin is provided with a ventilating filter hole; the drying heater comprises a heating pipe arranged around the inner wall of the drying bin; the temperature and humidity detection device comprises a drying temperature sensor and a drying humidity sensor, and a quantity sensor is arranged on the inner wall of the drying bin.

7. The PET bottle flake cleaning machine of claim 1, wherein: and a rotary snake-shaped rinsing channel is arranged on one side of the rinsing pool, which is adjacent to the rinsing feeding groove, and the rinsing conveyor belt is arranged on the other side of the rinsing pool.

8. The PET bottle flake cleaning machine of claim 3, wherein: the flotation solution comprises a NaCl solution with the density of 1.1-1.2; the floating washing conveyor belt is an inclined conveyor belt, one end of the inclined conveyor belt is immersed below the liquid level of the floating washing liquid, and the other end of the inclined conveyor belt extends to the outer side of the edge of the floating washing pool; the inclination angle of the floating conveyor belt is 15-45 degrees.

9. The PET bottle flake cleaning machine of claim 4, wherein: the inclination angle of the rinsing conveyor belt is 25-60 degrees; the temperature of the alkaline water rinsing liquid is 80-90 ℃.

10. The PET bottle flake cleaning machine of claim 5, wherein; the water temperature of the reservoir is 80-90 degrees.