CN103128869B - Waste plastic recycling system - Google Patents

Waste plastic recycling system Download PDF

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Publication number
CN103128869B
CN103128869B CN201310047234.7A CN201310047234A CN103128869B CN 103128869 B CN103128869 B CN 103128869B CN 201310047234 A CN201310047234 A CN 201310047234A CN 103128869 B CN103128869 B CN 103128869B
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housing
dust suction
suction chamber
waste plastics
discharging
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CN103128869A (en
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费洪福
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Guangzhou Lingfu Electromechanical Co ltd
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Individual
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Abstract

The invention discloses a waste plastic recycling system, and aims to overcome the defects that in an existing waste plastic recycling system, structure is complex, process is cumbersome, washing of waste plastic raw materials is needed, recycling cost of waste plastics is high, a utilization rate of the plastic raw materials is low, and harmful gas produced in the recycling process of the waste plastics can pollute environment. The waste plastic recycling system comprises a feeding device, an extrusion device, a discharging device and a dust suction device which are connected in sequence. The feeding device enables the waste plastic raw materials to be delivered to the extrusion device without washing, investment of washing devices is eliminated, recycling cost of the waste plastics is reduced, and the utilization rate of the waste plastic raw materials is increased. Due to the fact that the discharging device is designed in a closed mode, the waste gas is led into the dust suction device, and the environment is not polluted. Besides, flue-gas temperature is low in the recycling process of the waste plastics, no harmful gas such as dioxin is produced, and the waste plastic recycling system is environment-friendly.

Description

Waste plastics recovery utilizes system
Technical field
The present invention relates to a kind of Waste plastic treatment apparatus, more particularly, the waste plastics recovery that it relates to a kind of energy-conserving and environment-protective utilizes system.
Background technology
Along with the continuous reinforcement of people's environmental consciousness, waste plastics obtains good recycling.Generally first clean with water the waste plastics retrieved at present, dry after having cleaned, last heating and melting, the waste plastics of melting is extruded through plastic extruder, then carries out traction granulation.This processing mode needs to wash waste plastics raw material on the one hand, and need to use cleaning equipment, add input and the processing step of equipment, the cost recovery of waste plastics increases greatly.And the waste plastics raw material that much can utilize after cleaning also washing and precipitating can get off and be not used, and greatly reduces the utilization rate of waste plastics raw material.On the other hand, the retracting device of existing waste plastics can give off a large amount of high-temperature flue gas, can with the dioxin of contaminated environment in these flue gases, and these flue gases are directly discharged in air, serious environment pollution.
Chinese patent notification number CN1339351A, disclose a kind of method of reclaiming and pelleting waste plastic, the waste plastics collected is put into the drum-type washing machine that band is porose, add washing agent cleaning, it is broken that waste plastics after washing puts into disintegrating machine, then deliver to wash pool through conveying worm and carry out second time cleaning, then the waste plastics after washing is elevated in whizzer through film breaking machine, carry out drying, be transported to plastic extruder through automatic charging machine again, change filter screen device, stock-cutter, by air blast power, finished product is reached feed bin.The recovery method of this waste plastics needs to clean to the waste plastics retrieved, and add input and the processing step of equipment, the cost recovery of waste plastics increases greatly, reduces the utilization rate of waste plastics raw material.And the waste gas produced in removal process is not processed, contaminated environment.
Summary of the invention
Instant invention overcomes existing waste plastics recovery utilizes system architecture complicated, technique is loaded down with trivial details, need to wash waste plastics raw material, waste plastics recovery cost is high, the utilization rate of plastic raw materials is low, and the deficiency that the pernicious gas of waste plastics recovery process generation pollutes the environment, provide a kind of waste plastics recovery and utilize system, its structure is simple, processing step is few, do not need to wash waste plastics raw material, decrease the input of cleaning equipment, reduce waste plastics recovery cost, add the utilization rate of waste plastics raw material, and the flue-gas temperature that waste plastics recovery process produces is lower, the pernicious gases such as dioxin can not be produced, environmental protection more.
In order to solve the problems of the technologies described above, the present invention is by the following technical solutions: a kind of waste plastics recovery utilizes system, comprise the feed arrangement be connected successively, extrusion device, drawing mechanism and dust exhaust apparatus, feed arrangement comprises charging housing, feeding conveyor structure is provided with in charging housing, feeding conveyor structure comprises two belt pulleys and is arranged on the conveyer belt on two belt pulleys, the belt pulley of discharge end is with ferromagnetism, charging housing is provided with charging aperture, the discharging opening be connected with extrusion device, the sidewall of charging aperture is coated with magnetic block, in charging housing, the below of conveyer belt is provided with the baffle plate of inclination, baffle plate one end is near the pulley position of discharge end, the baffle plate other end is near the lower end position of charging housing, be provided with air blast in charging housing, the air outlet of air blast to be arranged between baffle plate and conveyer belt and towards discharging opening, drawing mechanism comprises discharging housing, the discharge end of extrusion device is communicated with discharging housing, material retaining net is provided with near upper end position in discharging housing, discharging housing is provided with conveying body near lower end position, in discharging housing, the top of conveying body is provided with screen cloth, and in discharging housing, the top of screen cloth is provided with disintegrating mechanism, and the upper end of discharging housing is provided with gas outlet, the lower end of discharging housing is provided with delivery port, and conveying body passes delivery port, dust exhaust apparatus comprises the one-level dust suction chamber and secondary dust suction chamber that are interconnected, and one-level dust suction chamber is communicated with gas outlet, and secondary dust suction chamber connects air-introduced machine.
Do not need after waste plastics recovery to clean, directly deliver to feed arrangement, due to a lot of impurity can be mingled with in the waste plastics retrieved, as there is iron, glass blocks and other larger impurity in the waste plastics of paper industry, these impurity must clear and could carry out process recycling to waste plastics.The sidewall of the charging aperture of feed arrangement covers magnetic block to clear up for the first time the metal pair waste plastics of magnetic block adhesive as iron one class in adhesive waste plastics, waste plastics is sent to the other end from one end of conveyer belt and falls, waste plastics is blowed to discharging opening by the air that air blast blows out in the process fallen, larger and heavier impurity to be fallen on baffle plate and the bottom position slided in charging housing, and the belt pulley of discharge end is with ferromagnetism, therefore the metal as iron one class can be attracted on conveyer belt, along with walking about of conveyer belt, magnetic force slowly reduces, final these adhesives metal on a moving belt to drop on baffle plate and the bottom position slided in charging housing.Charging housing is provided with cleaning door near bottom position, regularly opens cleaning door and charging housing bottom is cleared up.Waste plastics after process is transported in extrusion device and carries out thermoplastic, waste plastics after thermoplastic is expressed into drawing mechanism from extrusion device, the waste plastics be expressed in drawing mechanism is solid-state in what soften, owing to being provided with disintegrating mechanism in drawing mechanism, disintegrating mechanism is pulverized softening waste plastics, comes finally to fall on conveying body transporting out by the screening of screen cloth.And the one-level dust suction chamber of dust exhaust apparatus is communicated with the gas outlet of drawing mechanism, secondary dust suction chamber connects air-introduced machine, discharging enclosure interior forms a closed cavity, after air-introduced machine work, the hot gas in drawing mechanism is all siphoned away, hot gas in discharging housing can not be discharged in air, and backgauge sheet avoids the material in discharging housing to be siphoned away by air-introduced machine.And dust exhaust apparatus comprises the one-level dust suction chamber and secondary dust suction chamber that are interconnected, two-stage dust suction chamber carries out dust suction process, greatly increases pick-up performance.Waste plastics recovery utilizes system architecture simple, removal process processing step is few, do not need to wash waste plastics raw material, decrease the input of cleaning equipment, reduce waste plastics recovery cost, a lot of waste plastics can not be run off because of water-washing process, increase the utilization rate of solid waste, and the flue-gas temperature that waste plastics recovery process produces is lower, can not produce the pernicious gases such as dioxin, more environmental protection.
As preferably, disintegrating mechanism comprises and is rotatably connected on crushing shaft on discharging housing, on crushing shaft, uniform setting is connected with three and rotates crushing piece, relatively be provided with two panels in discharging housing and fix crushing piece, rotate crushing piece and fixing crushing piece all to arrange along the axis of crushing shaft, the rotation edge of crushing piece and the edge of fixing crushing piece cooperatively interact pulverizing.Motor drives crushing shaft to rotate by transmission mechanism, thus the edge of the edge of rotation crushing piece and fixing crushing piece is interacted, and pulverizes point softening waste plastics in drawing mechanism.Waste plastics after softening is directly ground into waste plastic particles by disintegrating mechanism, and is transported to after not needing the waste plastics after softening to collect on other disintegrating apparatus and pulverizes, decrease cost of labor, reduce the use of electricity.
As preferably, screen cloth is the platy structure that cross section is lower arcs of recesses, and the two ends of screen cloth arc are fixedly connected on the inwall of discharging housing, and the other two ends of screen cloth are respectively near the marginal position that two fixing crushing piece are relative.Waste plastic particles after the screen cloth one side convenient for collecting pulverizing of this structure, provides sufficient space on the other hand the screen filtration of waste plastic particles, waste plastic particles is fallen on conveying body more swimmingly.
As preferably, on discharging housing exterior walls, the edge of delivery port is fixedly connected with anti-petticoat pipe in one week, and anti-petticoat pipe covers on conveying body.Anti-petticoat pipe adds the air inducing distance of discharging housing in delivery port position; flue gas in discharging housing can not be discharged from delivery port; on the other hand; the waste plastic particles that conveying body transfers out can remain certain heat; arranging anti-petticoat pipe makes waste plastic particles have longer cool time, ensures that the waste plastic particles transferred out can not with flue gas.
As preferably, the one-level dust suction chamber of dust exhaust apparatus is connected with the gas outlet on discharging housing by pipeline, the funnel-form that the lower end of one-level dust suction chamber is big up and small down, pipe outlet in one-level dust suction chamber is near the lower end position of one-level dust suction chamber, the outer wall of one-level dust suction chamber near upper end is provided with the connector for being communicated with secondary dust suction chamber, connector is provided with screen pack, dividing plate is provided with in secondary dust suction chamber, secondary dust suction chamber is divided into mutually isolated epicoele and cavity of resorption by dividing plate, one-level dust suction chamber is communicated with the cavity of resorption of secondary dust suction chamber, dividing plate is provided with several intercommunicating pores, intercommunicating pore is fixedly connected with dust collecting sleeve, air jet pipe is provided with in cavity of resorption, the inlet end of air jet pipe connects air pump, the outlet of air jet pipe is arranged in dust collecting sleeve, the funnel-form that the lower end of secondary dust suction chamber is big up and small down, secondary dust suction chamber lower end connects collecting bag, fan inlet is communicated with epicoele by pipeline.
After air-introduced machine starts, airflow direction is through the cavity of resorption of one-level dust suction chamber, secondary dust suction chamber and cavity of resorption in discharging housing, finally arrives air-introduced machine.Pipe outlet in one-level dust suction chamber is near the basal surface position of one-level dust suction chamber, and connector is arranged near one-level dust suction chamber upper end position, and dust granules heavier in such gas will be deposited on the bottom of one-level dust suction chamber.Lighter dust absorbs the cavity of resorption of secondary dust suction chamber along with air-flow, and owing to being provided with screen pack in connector position, therefore arriving in cavity of resorption has been a small amount of comparatively calomel mercurous chloride dirt.Air-flow in cavity of resorption flows to epicoele by the dust collecting sleeve be connected on dividing plate intercommunicating pore, and the dust in air-flow will stand on dust collecting sleeve, and the dust of only a few can flow to epicoele.Because the inlet end of air jet pipe connects air pump, the outlet of air jet pipe is arranged in dust collecting sleeve, therefore when after the dust that dust collecting sleeve is infected with is more by air pump to inject high pressure gas in dust collecting sleeve, dust is laid and to be dropped on bottom cavity of resorption and to be collected by collecting bag by the impulsive force of gas.The air outlet of air-introduced machine is connected in pond, and the dust in air-flow is deposited on completely in water and can not be discharged in air, preventing pollution air.
As preferably, in discharging housing, the upper end of disintegrating mechanism is fixedly connected with cooling cylinder, cooling cylinder comprises inner core and urceolus, gap between inner core and urceolus forms cooling chamber, the upper and lower closed at both ends of cooling chamber, urceolus is provided with the water inlet pipe be communicated with cooling chamber, inner tube wall is laid with the high pressure spray perforation that several are communicated with cooling chamber.Water inlet pipe connects high-pressure hydraulic pump, in cooling chamber, high-pressure cooling water is injected by high-pressure hydraulic pump, high-pressure cooling water sprays to the softening waste plastics of whereabouts by high pressure spray perforation, make waste plastics instantaneous cooling, prevent the waste plastics softened to be bonded on disintegrating mechanism because the too high softening degree of temperature is large, make the flour process of softening waste plastics smooth and easy.
As preferably, in discharging housing, the top of cooling cylinder is fixedly connected with cartridge filter, the axis of cartridge filter and the axes normal of cooling cylinder, the two ends of cartridge filter are fixedly connected on the inwall of discharging housing, cartridge filter comprises internal layer cylinder and outer cylinder, be provided with gap between internal layer cylinder and outer cylinder, the barrel of internal layer cylinder be laid with several filter bores, on outer cylinder barrel, directly over cooling cylinder, position is provided with extrusion cavities; End positions near cartridge filter on discharging housing exterior walls is respectively equipped with mud hole and charging hole; Extrusion device is provided with the discharge nozzle be connected with charging hole, is provided with discharge screw in discharge nozzle, and the end winding support of discharge screw is connected with the scraper plate for cartridge filter inwall of swiping, and scraper plate is arranged in cartridge filter.The material that extrusion device transfers out filters further in cartridge filter, from the extrusion cavities position discharging vertically downward of outer cylinder after the filtration of internal layer cylinder.The rotation of discharge screw drives scraper plate to rotate together, and arrange scraper at scraper plate outward flange, the inwall of scraper to internal layer cylinder scrapes, and the residue in internal layer cylinder is discharged from mud hole.
As preferably, the below of charging housing Internal baffle is provided with auxiliary feeding conveyor structure, auxiliary feeding conveyor structure comprises two belt pulleys and is arranged on the conveyer belt on two belt pulleys, the conveyer belt of top connects pinch roller, pinch roller pressure on a moving belt, pinch roller is the little I shape structure in large centre, two, and fan out draft is by the position between the conveyer belt of feeding conveyor structure auxiliary in install pipeline to charging housing and baffle plate and towards the discharging opening of charging housing.Material falls major part from the conveyer belt of feeding conveyor structure and has been blowed to discharging opening by air blast, on the baffle plate that some larger impurity is fallen, but the bottom position still having the heavier and larger waste plastics of small part can not be blown to discharging opening directly to drop in charging housing, reduces the utilization rate of waste plastics.So be provided with auxiliary feeding conveyor structure in the below of charging housing Internal baffle, heavier or the larger waste plastics that can not be blown to discharging opening is made to fall on the conveyer belt of auxiliary feeding conveyor structure, and conveyer belt is arranged pinch roller, pinch roller pressure makes conveyer belt be recessed arc on a moving belt, conveyer belt when material can to material have one upwards throw away power, add that fan out draft is arranged on auxiliary feeding conveyor structure between conveyer belt and baffle plate, blow material further, therefore the heavier or larger material on the conveyer belt of feeding conveyor structure is assisted to be transported to discharging opening, increase the utilization rate of waste plastics.Pinch roller is the little I shape structure in large centre, two, enables the material on conveyer belt pass through pinch roller.Using the air outlet of fan out draft as auxiliary feeding conveyor structure, take full advantage of resource, and the fuel gas and dust that air-introduced machine is discharged is few, substantially can not produce environment and pollute, not need to reoffer air blast, reduce the input of equipment, reduce cost, save electric energy.
As preferably, outer cylinder outer cover is connected to heating muff, heating muff two ends are fixedly connected with discharging inner walls, are provided with heating tube in the gap between heating muff and outer cylinder, heating muff outside are provided with the through hole that also with extrusion cavities be communicated with coaxial with extrusion cavities near extrusion cavities position.Before extrusion device work, preheating is carried out to cartridge filter, by the heating tube be arranged between heating muff and outer cylinder, cartridge filter is heated, after the preheated one-section time, stop heating.Cartridge filter preheating prevents the raw material extruded in extrusion device to be bonded on cartridge filter, makes the filtration of raw material more smooth and easy.
Compared with prior art, the invention has the beneficial effects as follows: (1) waste plastics recovery utilizes system architecture simple, removal process processing step is few, does not need to wash waste plastics raw material, decreases the input of cleaning equipment, reduce waste plastics recovery cost, a lot of waste plastics can not be run off because of water-washing process, increase the utilization rate of solid waste, and the flue-gas temperature that waste plastics recovery process produces is lower, the pernicious gases such as dioxin can not be produced, more environmental protection; (2) cooling cylinder cools softening waste plastics, prevents the waste plastics softened to be bonded on disintegrating mechanism because the too high softening degree of temperature is large, makes the flour process of softening waste plastics smooth and easy; (3) the totally-enclosed setting of drawing mechanism, the air-flow of discharging enclosure interior all takes away process by air-introduced machine, and the waste gas in discharging housing directly can not be discharged into workshop, effective preventing pollution air; (4) waste plastics after softening is directly ground into waste plastic particles by disintegrating mechanism, and is transported to after not needing the waste plastics after softening to collect on other disintegrating apparatus and pulverizes, reduce cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiments of the invention 1;
Fig. 2 is the internal structure schematic diagram of the drawing mechanism of embodiments of the invention 1;
Fig. 3 is the structural representation of embodiments of the invention 2;
Fig. 4 is the internal structure schematic diagram of the drawing mechanism of embodiments of the invention 2;
Fig. 5 is the structural representation of embodiments of the invention 3;
Fig. 6 is the internal structure schematic diagram of the drawing mechanism of embodiments of the invention 3;
In figure: 1, feed arrangement, 2, extrusion device, 3, drawing mechanism, 4, dust exhaust apparatus, 100, charging housing, 101, feeding conveyor structure, 102, belt pulley, 103, conveyer belt, 104, charging aperture, 105, discharging opening, 106, magnetic block, 107, baffle plate, 108, air blast, 109, auxiliary feeding conveyor structure, 110, pinch roller, 300, discharging housing, 301, material retaining net, 302, conveying body, 303, screen cloth, 304, disintegrating mechanism, 305, gas outlet, 306, delivery port, 307, crushing shaft, 308, rotate crushing piece, 309, fixing crushing piece, 310, anti-petticoat pipe, 311, cooling cylinder, 312, inner core, 313, urceolus, 314, cooling chamber, 315, water inlet pipe, 316, high pressure spray perforation, 317, cartridge filter, 318, internal layer cylinder, 319, outer cylinder, 320, filter bores, 321, extrusion cavities, 322, mud hole, 323, charging hole, 324, discharge nozzle, 325, scraper plate, 326, heating muff, 327, electrothermal tube, 400, one-level dust suction chamber, 401, secondary dust suction chamber, 402, air-introduced machine, 403, connector, 404, screen pack, 405, dividing plate, 406, epicoele, 407, cavity of resorption, 408, intercommunicating pore, 409, dust collecting sleeve, 410, air jet pipe, 411, air pump, 412, collecting bag, 413, fan out draft.
Detailed description of the invention
Below by specific embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is further described specifically:
Embodiment 1: a kind of waste plastics recovery utilizes system (see accompanying drawing 1), is specially adapted to the recycling of paper industry waste plastics, comprises the feed arrangement 1, extrusion device 2, drawing mechanism 3 and the dust exhaust apparatus 4 that are connected successively.Feed arrangement comprises closed charging housing 100, the feeding conveyor structure 101 be obliquely installed is provided with in charging housing, the conveyer belt 103 that feeding conveyor structure comprises two belt pulleys 102 and is arranged on two belt pulleys, the belt pulley of discharge end is above the belt pulley of feed end, and the belt pulley of discharge end is with ferromagnetism.The discharging opening 105 that charging housing is provided with rectangle charging aperture 104, is connected with extrusion device, the sidewall of charging aperture is coated with magnetic block 106, in charging housing, the below of conveyer belt is provided with the baffle plate 107 of inclination, baffle plate one end is near the pulley position of discharge end, and the baffle plate other end is near the lower end position of charging housing; Be provided with air blast 108 in charging housing, the air outlet of air blast to be arranged between baffle plate and conveyer belt and towards discharging opening.Charging housing is provided with cleaning door near bottom position, regularly opens cleaning door and charging housing bottom is cleared up.Extrusion device is an extruding machine, and the feed end of extruding machine is connected with the discharging opening of feed arrangement, and the discharge end of extruding machine is connected with drawing mechanism.
Drawing mechanism (see accompanying drawing 2) comprises enclosed discharging housing 300, discharging housing comprises top cover, bottom and four sidewalls, the discharge end of extrusion device is communicated with discharging housing, material retaining net 301 is provided with near upper end position in discharging housing, material retaining net is provided with the mesh of several uniform settings, and material retaining net is the platy structure of convex on cross section.The discharge end of extrusion device is connected with the communicating pipe of L shape, and communicating pipe is used for extruded material and is arranged in discharging housing, ensures vertical blanking.Discharging housing is provided with conveying body 302 near lower end position, conveying body comprises two belt pulleys and is connected to the conveyer belt on two belt pulleys, the sidewall of discharging housing near lower end is provided with rectangle delivery port 306, conveying body passes delivery port, on discharging housing exterior walls, the edge of delivery port is fixedly connected with anti-petticoat pipe 310 for one week, the rectangular in cross-section frame-shaped structure of anti-petticoat pipe, anti-petticoat pipe covers on conveying body.In discharging housing, the top of conveying body is provided with screen cloth 303, and in discharging housing, the top of screen cloth is provided with disintegrating mechanism 304.Disintegrating mechanism comprises and is rotatably connected on crushing shaft 307 on discharging housing, on crushing shaft, uniform setting is connected with three and rotates crushing piece 308, rotate crushing piece and crushing shaft integrative-structure, relatively be provided with two panels in discharging housing and fix crushing piece 309, rotate crushing piece and fixing crushing piece all to arrange along the axis of crushing shaft, the rotation edge of crushing piece and the edge of fixing crushing piece cooperatively interact pulverizing.Crushing shaft is driven by motor via reducer.Screen cloth is the platy structure that cross section is lower arcs of recesses, and the two ends of screen cloth arc are fixedly connected on the inwall of discharging housing, and the other two ends of screen cloth are respectively near the marginal position that two fixing crushing piece are relative.The axis of curved screen is parallel with the axis of crushing shaft, the axis of arc material retaining net and the axial vertical of crushing shaft.The upper end top cover of discharging housing is provided with gas outlet 305.The lower surface of discharging housing bottom is provided with four universal wheels with brake, and it is convenient that universal wheel makes discharging housing move, and the assembling of discharging housing and extrusion device is convenient.
Dust exhaust apparatus comprises the one-level dust suction chamber 400 and secondary dust suction chamber 401 that are interconnected, and one-level dust suction chamber is communicated with gas outlet by pipeline, and secondary dust suction chamber connects air-introduced machine 402.The one-level dust suction chamber of dust exhaust apparatus is connected with the gas outlet on discharging housing by pipeline, the funnel-form that the lower end of one-level dust suction chamber is big up and small down, pipe outlet in one-level dust suction chamber is near the lower end position of one-level dust suction chamber, one-level dust suction chamber outer wall is provided with cleaning door near lower end position, facilitates regularly to clear up the foreign material in one-level dust suction chamber.The outer wall of one-level dust suction chamber near upper end is provided with the connector 403 for being communicated with secondary dust suction chamber, and connector is provided with screen pack 404.Dividing plate 405 is provided with in secondary dust suction chamber, secondary dust suction chamber is divided into mutually isolated epicoele 406 and cavity of resorption 407 by dividing plate, one-level dust suction chamber is communicated with the cavity of resorption of secondary dust suction chamber, dividing plate is provided with two intercommunicating pores 408, intercommunicating pore is fixedly connected with dust collecting sleeve 409, the opening of dust collecting sleeve is towards cavity of resorption, air jet pipe 410 is provided with in cavity of resorption, the inlet end of air jet pipe connects air pump 411, the outlet of air jet pipe divides two strands to be separately positioned in dust collecting sleeve, the funnel-form that the lower end of secondary dust suction chamber is big up and small down, secondary dust suction chamber lower end connects collecting bag 412, collecting bag collects the dust deposited in cavity of resorption.Fan inlet is communicated with epicoele by pipeline.The exhaust outlet of air-introduced machine is arranged in pond, and the water in pond carries out last dust suction process to the air-flow in air-introduced machine.
Do not need after waste plastics recovery to clean, directly deliver to feed arrangement, due to a lot of impurity can be mingled with in the waste plastics retrieved, as there is iron, glass blocks and other larger impurity in the waste plastics of paper industry, these impurity must clear and could carry out process recycling to waste plastics.The sidewall of the charging aperture of feed arrangement covers magnetic block to clear up for the first time the metal pair waste plastics of magnetic block adhesive as iron one class in adhesive waste plastics, waste plastics is sent to the other end from one end of conveyer belt and falls, waste plastics is blowed to discharging opening by the air that air blast blows out in the process fallen, larger and heavier impurity to be fallen on baffle plate and the bottom position slided in charging housing, and the belt pulley of discharge end is with ferromagnetism, therefore the metal as iron one class can be attracted on conveyer belt, along with walking about of conveyer belt, magnetic force slowly reduces, final these adhesives metal on a moving belt to drop on baffle plate and the bottom position slided in charging housing.Charging housing is provided with cleaning door near bottom position, regularly opens cleaning door and charging housing bottom is cleared up.Waste plastics after process is transported in extrusion device and carries out thermoplastic, waste plastics after thermoplastic is expressed into drawing mechanism from extrusion device, the waste plastics be expressed in drawing mechanism is solid-state in what soften, owing to being provided with disintegrating mechanism in drawing mechanism, disintegrating mechanism is pulverized softening waste plastics, comes finally to fall on conveying body transporting out by the screening of screen cloth.For the production of other plastic products after the plastic grain that conveying body transports out can pack as semi-finished product, also the plastic grain that conveying body transports out can be delivered directly on production line for the production of plastic products.The one-level dust suction chamber of dust exhaust apparatus is communicated with the gas outlet of drawing mechanism, secondary dust suction chamber connects air-introduced machine, discharging enclosure interior forms a closed cavity, after air-introduced machine work, the hot gas in drawing mechanism is all siphoned away, hot gas in discharging housing can not be discharged in air, and backgauge sheet avoids the material in discharging housing to be siphoned away by air-introduced machine.After air-introduced machine starts, airflow direction is through the cavity of resorption of one-level dust suction chamber, secondary dust suction chamber and cavity of resorption in discharging housing, finally arrives air-introduced machine.Pipe outlet in one-level dust suction chamber is near the basal surface position of one-level dust suction chamber, and connector is arranged near one-level dust suction chamber upper end position, and dust granules heavier in such gas will be deposited on the bottom of one-level dust suction chamber.Lighter dust absorbs the cavity of resorption of secondary dust suction chamber along with air-flow, and owing to being provided with screen pack in connector position, therefore arriving in cavity of resorption has been a small amount of comparatively calomel mercurous chloride dirt.Air-flow in cavity of resorption flows to epicoele by the dust collecting sleeve be connected on dividing plate intercommunicating pore, and the dust in air-flow will stand on dust collecting sleeve, and the dust of only a few can flow to epicoele.Because the inlet end of air jet pipe connects air pump, the outlet of air jet pipe is arranged in dust collecting sleeve, therefore when after the dust that dust collecting sleeve is infected with is more by air pump to inject high pressure gas in dust collecting sleeve, dust is laid and to be dropped on bottom cavity of resorption and to be collected by collecting bag by the impulsive force of gas.The air outlet of air-introduced machine is connected in pond, and the dust in air-flow is deposited on completely in water and can not be discharged in air, preventing pollution air.
Embodiment 2: a kind of waste plastics recovery utilizes system (see accompanying drawing 3), and its structure is similar to embodiment 1, and main difference point is in the structure with drawing mechanism (participating in accompanying drawing 4).In discharging housing, the upper end of disintegrating mechanism is fixedly connected with the cooling cylinder 311 vertically arranged, cooling cylinder comprises inner core 312 and urceolus 313, gap between inner core and urceolus forms cooling chamber 314, the upper and lower closed at both ends of cooling chamber, urceolus is provided with two water inlet pipes 315 be communicated with cooling chamber, inner tube wall is laid with several high pressure spray perforation 316, two water inlet pipes be communicated with cooling chamber and all connects high-pressure hydraulic pump.The axis of high pressure spray perforation and the axes intersect of inner core.Other structure is identical with embodiment 1.In cooling chamber, high-pressure cooling water is injected by high-pressure hydraulic pump, high-pressure cooling water sprays to the softening waste plastics of whereabouts by high pressure spray perforation, make waste plastics instantaneous cooling, prevent the waste plastics softened to be bonded on disintegrating mechanism because the too high softening degree of temperature is large, make the flour process of softening waste plastics smooth and easy.
Embodiment 3: a kind of waste plastics recovery utilizes system (see accompanying drawing 5), and its structure is similar to embodiment 2, main difference point with the structure of drawing mechanism (participating in accompanying drawing 6) and the structure of feed arrangement.In discharging housing, the top of cooling cylinder is fixedly connected with cartridge filter 317, the axis of cartridge filter and the axes normal of cooling cylinder, the two ends of cartridge filter are fixedly connected on the inwall of discharging housing, cartridge filter comprises internal layer cylinder 318 and outer cylinder 319, gap is provided with between internal layer cylinder and outer cylinder, the barrel of internal layer cylinder is laid with several filter bores 320, on outer cylinder barrel, directly over cooling cylinder, position is provided with extrusion cavities 321.End positions near cartridge filter on discharging housing exterior walls is respectively equipped with mud hole 323 and charging hole 324; Extrusion device is provided with the discharge nozzle be connected with charging hole, is provided with discharge screw in discharge nozzle, and the end winding support of discharge screw is connected with the scraper plate 325 for cartridge filter inwall of swiping, and scraper plate is arranged in cartridge filter.The rotation of discharge screw drives scraper plate to rotate together, and arrange scraper at scraper plate outward flange, the inwall of scraper to internal layer cylinder scrapes, and the residue in internal layer cylinder is discharged from mud hole.The material that extrusion device transfers out filters further in cartridge filter, improves the quality of material, from the extrusion cavities position discharging vertically downward of outer cylinder after the filtration of internal layer cylinder.Outer cylinder outer cover is connected to heating muff 326, heating muff two ends are fixedly connected with discharging inner walls, be provided with heating tube 327 in gap between heating muff and outer cylinder, heating muff outside be provided with the through hole that also with extrusion cavities be communicated with coaxial with extrusion cavities near extrusion cavities position.Before extrusion device work, preheating is carried out to cartridge filter, by the heating tube be arranged between heating muff and outer cylinder, cartridge filter is heated, after the preheated one-section time, stop heating.Cartridge filter preheating prevents the raw material extruded in extrusion device to be bonded on cartridge filter, makes the filtration of raw material more smooth and easy.
The below of charging housing Internal baffle is provided with auxiliary feeding conveyor structure 109, auxiliary feeding conveyor structure comprises two belt pulleys and is arranged on the conveyer belt on two belt pulleys, the conveyer belt of top connects pinch roller 110, pinch roller pressure on a moving belt, pinch roller is the little I shape structure in large centre, two, and fan out draft 413 is by the position between the conveyer belt of feeding conveyor structure auxiliary in install pipeline to charging housing and baffle plate and towards the discharging opening of charging housing.Material falls major part from the conveyer belt of feeding conveyor structure and has been blowed to discharging opening by air blast, on the baffle plate that some larger impurity is fallen, but the bottom position still having the heavier and larger waste plastics of small part can not be blown to discharging opening directly to drop in charging housing, reduces the utilization rate of waste plastics.So be provided with auxiliary feeding conveyor structure in the below of charging housing Internal baffle, heavier or the larger waste plastics that can not be blown to discharging opening is made to fall on the conveyer belt of auxiliary feeding conveyor structure, and conveyer belt is arranged pinch roller, pinch roller pressure makes conveyer belt be recessed arc on a moving belt, conveyer belt when material can to material have one upwards throw away power, add that fan out draft is arranged on auxiliary feeding conveyor structure between conveyer belt and baffle plate, blow material further, therefore the heavier or larger material on the conveyer belt of feeding conveyor structure is assisted to be transported to discharging opening, increase the utilization rate of waste plastics.Pinch roller is the little I shape structure in large centre, two, enables the material on conveyer belt pass through pinch roller.Using the air outlet of fan out draft as auxiliary feeding conveyor structure, take full advantage of resource, and the fuel gas and dust that air-introduced machine is discharged is few, substantially can not produce environment and pollute, not need to reoffer air blast, reduce the input of equipment, reduce cost, save electric energy.
Above-described embodiment is three kinds of preferably schemes of the present invention, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.

Claims (9)

1. a waste plastics recovery utilizes system, comprise the feed arrangement (1) be connected successively, extrusion device (2), drawing mechanism (3) and dust exhaust apparatus (4), it is characterized in that, feed arrangement comprises charging housing (100), feeding conveyor structure (101) is provided with in charging housing, feeding conveyor structure comprises two belt pulleys (102) and is arranged on the conveyer belt (103) on two belt pulleys, the belt pulley of discharge end is with ferromagnetism, charging housing is provided with charging aperture (104), the discharging opening (105) be connected with extrusion device, the sidewall of charging aperture is coated with magnetic block (106), in charging housing, the below of conveyer belt is provided with the baffle plate (107) of inclination, baffle plate one end is near the pulley position of discharge end, the baffle plate other end is near the lower end position of charging housing, be provided with air blast (108) in charging housing, the air outlet of air blast to be arranged between baffle plate and conveyer belt and towards discharging opening, drawing mechanism comprises discharging housing (300), the discharge end of extrusion device is communicated with discharging housing, material retaining net (301) is provided with near upper end position in discharging housing, discharging housing is provided with conveying body (302) near lower end position, in discharging housing, the top of conveying body is provided with screen cloth (303), in discharging housing, the top of screen cloth is provided with disintegrating mechanism (304), the upper end of discharging housing is provided with gas outlet (305), the lower end of discharging housing is provided with delivery port (306), and conveying body passes delivery port, dust exhaust apparatus comprises the one-level dust suction chamber (400) and secondary dust suction chamber (401) that are interconnected, and one-level dust suction chamber is communicated with gas outlet, and secondary dust suction chamber connects air-introduced machine (402).
2. waste plastics recovery according to claim 1 utilizes system, it is characterized in that, disintegrating mechanism comprises and is rotatably connected on crushing shaft (307) on discharging housing, on crushing shaft, uniform setting is connected with three and rotates crushing piece (308), relatively be provided with two panels in discharging housing and fix crushing piece (309), rotate crushing piece and fixing crushing piece all to arrange along the axis of crushing shaft, the rotation edge of crushing piece and the edge of fixing crushing piece cooperatively interact pulverizing.
3. waste plastics recovery according to claim 2 utilizes system, it is characterized in that, screen cloth is the platy structure that cross section is lower arcs of recesses, and the two ends of screen cloth arc are fixedly connected on the inwall of discharging housing, and the other two ends of screen cloth are respectively near the marginal position that two fixing crushing piece are relative.
4. waste plastics recovery according to claim 1 utilizes system, it is characterized in that, on discharging housing exterior walls, the edge of delivery port is fixedly connected with anti-petticoat pipe (310) for one week, and anti-petticoat pipe covers on conveying body.
5. waste plastics recovery according to claim 1 utilizes system, it is characterized in that, the one-level dust suction chamber of dust exhaust apparatus is connected with the gas outlet on discharging housing by pipeline, the funnel-form that the lower end of one-level dust suction chamber is big up and small down, pipe outlet in one-level dust suction chamber is near the lower end position of one-level dust suction chamber, the outer wall of one-level dust suction chamber near upper end is provided with the connector (403) for being communicated with secondary dust suction chamber, connector is provided with screen pack (404), dividing plate (405) is provided with in secondary dust suction chamber, secondary dust suction chamber is divided into mutually isolated epicoele (406) and cavity of resorption (407) by dividing plate, one-level dust suction chamber is communicated with the cavity of resorption of secondary dust suction chamber, dividing plate is provided with several intercommunicating pores (408), intercommunicating pore is fixedly connected with dust collecting sleeve (409), air jet pipe (410) is provided with in cavity of resorption, the inlet end of air jet pipe connects air pump (411), the outlet of air jet pipe is arranged in dust collecting sleeve, the funnel-form that the lower end of secondary dust suction chamber is big up and small down, secondary dust suction chamber lower end connects collecting bag (412), fan inlet is communicated with epicoele by pipeline.
6. the waste plastics recovery according to claim 1 or 2 or 3 or 4 or 5 utilizes system, it is characterized in that, in discharging housing, the upper end of disintegrating mechanism is fixedly connected with cooling cylinder (311), cooling cylinder comprises inner core (312) and urceolus (313), gap between inner core and urceolus forms cooling chamber (314), the upper and lower closed at both ends of cooling chamber, urceolus is provided with the water inlet pipe (315) be communicated with cooling chamber, inner tube wall is laid with the high pressure spray perforation (316) that several are communicated with cooling chamber.
7. waste plastics recovery according to claim 6 utilizes system, it is characterized in that, in discharging housing, the top of cooling cylinder is fixedly connected with cartridge filter (317), the axis of cartridge filter and the axes normal of cooling cylinder, the two ends of cartridge filter are fixedly connected on the inwall of discharging housing, cartridge filter comprises internal layer cylinder (318) and outer cylinder (319), gap is provided with between internal layer cylinder and outer cylinder, the barrel of internal layer cylinder is laid with several filter bores (320), on outer cylinder barrel, directly over cooling cylinder, position is provided with extrusion cavities (321); End positions near cartridge filter on discharging housing exterior walls is respectively equipped with mud hole (323) and charging hole (324); Extrusion device is provided with the discharge nozzle be connected with charging hole, is provided with discharge screw in discharge nozzle, and the end winding support of discharge screw is connected with the scraper plate (325) for cartridge filter inwall of swiping, and scraper plate is arranged in cartridge filter.
8. waste plastics recovery according to claim 7 utilizes system, it is characterized in that, the below of charging housing Internal baffle is provided with auxiliary feeding conveyor structure (109), auxiliary feeding conveyor structure comprises two belt pulleys and is arranged on the conveyer belt on two belt pulleys, the conveyer belt of top connects pinch roller (110), pinch roller pressure on a moving belt, pinch roller is the little I shape structure in large centre, two, and fan out draft (413) is by the position between the conveyer belt of feeding conveyor structure auxiliary in install pipeline to charging housing and baffle plate and towards the discharging opening of charging housing.
9. waste plastics recovery according to claim 7 utilizes system, it is characterized in that, outer cylinder outer cover is connected to heating muff (326), heating muff two ends are fixedly connected with discharging inner walls, be provided with heating tube (327) in gap between heating muff and outer cylinder, heating muff outside be provided with the through hole that also with extrusion cavities be communicated with coaxial with extrusion cavities near extrusion cavities position.
CN201310047234.7A 2013-02-06 2013-02-06 Waste plastic recycling system Expired - Fee Related CN103128869B (en)

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