CN212288257U - Control system for regeneration granulation of waste EPS cold pressing material - Google Patents
Control system for regeneration granulation of waste EPS cold pressing material Download PDFInfo
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- CN212288257U CN212288257U CN202020779215.9U CN202020779215U CN212288257U CN 212288257 U CN212288257 U CN 212288257U CN 202020779215 U CN202020779215 U CN 202020779215U CN 212288257 U CN212288257 U CN 212288257U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
A control system for regeneration granulation of waste EPS cold pressing materials comprises a conveying belt I, a pulverizer, a conveying belt II, a homogenizing bin, a metal separator, a screw conveyor, a rotary disc type feeding machine, a single-screw extruder, a filter I, a filter II, a vacuum exhaust device, a granulator, a vibrating screen, a finished product bin and a PLC (programmable logic controller) The filter II and the vacuum exhaust device, the granulator is installed at the rear end of the single-screw extruder, the vibrating screen is installed behind the granulator and connected with a finished product bin, and the equipment is subjected to centralized operation control through the PLC.
Description
Technical Field
The utility model relates to a control system for old and useless plastics regeneration granulation, concretely relates to a control system for old and useless EPS is colded pressing material regeneration granulation.
Background
Since the invention of plastics by human, 83 hundred million tons of plastic products are produced globally, 63 million tons of the products are discarded after being used as waste plastics, wherein only 5.7 million tons of the waste plastics are recycled, and the rest 50 million tons of the waste plastics are discarded in all corners of the world. At present, about 580 million tons of waste EPS cold pressing materials EPS plastics are produced in the world every year, wherein about 180 million tons of waste EPS foam plastics are produced in China every year, and except for a few developed countries, the waste EPS foam plastics in most countries are not effectively recycled and utilized, so that serious resource waste and environmental pollution are caused.
The method is a research hotspot of waste plastic recycling technology at home and abroad, and the waste EPS plastic is collected and then subjected to high-quality regeneration and modification, and a clean and efficient cascade utilization technology and high-added-value products are developed. But the waste EPS plastic has wide sources and the following characteristics: material property is unstable, and the material contains non-EPS resin impurities; ②, the product contains various metal and nonmetal impurities; ③ various residual auxiliary agents such as foaming agent or flame retardant; fourthly, the water content is high; the shape is irregular, and the density fluctuation is large; and sixthly, the coating is easy to degrade after multiple thermal histories. Therefore, the extrusion fluctuation is large, the particle impurities are high, the moisture content exceeds the standard when the single-screw extruder carries out regeneration granulation, and the production efficiency is low, the energy consumption is high, the raw material loss is large, and the equipment failure rate is high.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a control system that is used for old and useless EPS to coldly press material regeneration granulation.
The utility model provides a technical scheme that its technical problem adopted is: a control system for regeneration granulation of waste EPS cold pressing materials comprises a conveying belt I, a pulverizer, a conveying belt II, a homogenizing bin, a metal separator, a screw conveyor, a rotary disc type feeding machine, a single-screw extruder, a filter I, a filter II, a vacuum exhaust device, a granulator, a vibrating screen, a finished product bin and a PLC (programmable logic controller) The filter II and the vacuum exhaust device, the granulator is installed at the rear end of the single-screw extruder, the vibrating screen is installed behind the granulator and connected with a finished product bin, and the equipment is subjected to centralized operation control through the PLC.
The crusher is a heavy crusher with an open rotating shaft.
And a roller above the feed opening of the conveying belt II is a permanent magnet roller, and a slag discharge opening is arranged below the feed opening.
The homogenizing silo consists of a forced feeding screw, a lifting screw and a discharging screw.
The metal separator is a pipeline type electromagnetic induction metal separator.
The rotary disc type feeder is composed of a feeder cavity, a rotary cutter disc, damping fixed cutters, a material level sensor, a temperature sensor and a water spray valve, wherein the rotary cutter disc is spirally distributed by three or more groups, the damping fixed cutters are arranged on the feeder cavity in a check mark shape, the material level sensor is arranged at the top of the feeder cavity, the temperature sensor is arranged at the lower end of the feeder cavity close to the rotary cutter disc, the water spray valve is arranged at the upper end of the feeder cavity, and the temperature sensor controls the opening and closing of the water spray valve by detecting the temperature of materials in the feeder cavity.
The screw length-diameter ratio of single screw extruder be 38, constitute in proper order by feed section, compression section, fillter section, plastify section, vacuum section and extrusion section, the feed section is equidistant deep thread structure, the compression section is equidistant deep screw thread and the groove depth is by the depth-to-depth, the fillter section comprises fluting screw thread and reverse thread, the plastify section comprises equidistant deep screw thread and barrier type screw thread, the vacuum section comprises equidistant deep screw thread and the groove depth is by the depth-to-depth, the extrusion section comprises equidistant deep screw thread.
The filter I is a double-plunger cylindrical surface backwashing filter, the filtering working surface is a double-plunger cylindrical surface, and the filtering area is larger than 1800cm2(ii) a The filter II is a continuous full-automatic rotary filter with a round filtering working surfaceThe disc can continuously clean the surface, and the filtering area is more than 1500cm2，(ii) a Pressure sensors are respectively arranged at the front end of the filter I, between the filter I and the filter II and at the rear end of the filter II.
And the vacuum exhaust device is positioned between the filter II and the granulator and is provided with two vacuum exhaust ports.
The granulator is underwater strand cutting or water ring cutting.
The utility model has the advantages that: the utility model has the characteristics of simple process, production efficiency are high, and PS regenerated particle performance obtains better maintenance. The yield of the regeneration granulation of the waste EPS cold pressing material is more than three times of that of the conventional method.
The conveying belts are adopted for feeding in front and at the back of the pulverizer, the pulverizer can adapt to waste EPS cold pressing materials of different shapes and sizes, the feeding is stable, and the material blocking is not easy to occur. And the discharge outlet of the conveying belt II adopts a permanent magnet roller, so that magnetic metals such as iron, manganese steel, cobalt-nickel alloy and the like contained in the crushed materials can be removed, and hard metals are prevented from entering subsequent equipment to cause damage or abrasion.
The rotating shaft in the cavity of the heavy pulverizer is open, and the heavy pulverizer has the advantages of large shearing force, low energy consumption and uniform shearing particles.
The waste EPS cold pressing material is from dozens of countries and regions all over the world, and some cold pressing materials come from packing boxes of electrical appliances such as computers, televisions and the like; some are from foam boxes containing fruits, vegetables or seafood, and some are from insulation boards in the building industry; some contain a flame retardant, some contain a residual foaming agent, some contain an anti-aging agent, etc.; the instability of the raw material performance further increases the extrusion fluctuation of the single screw. The homogenizing silo is adopted, so that the effect of caching the pulverized materials is achieved, the pulverized materials can be mixed and homogenized, and the difference of the performances of the same batch of materials is reduced. The crushed material has poor fluidity, a forced feeding screw is arranged at a feeding port of the homogenizing stock bin, and a forced discharging screw is arranged at a discharging port, so that the phenomenon that the single-screw extruder lacks material due to bridging of the material is avoided.
A metal separator is arranged at a feed opening of the homogenizing silo, and the contained non-magnetic metals such as stainless steel, copper, aluminum and the like are removed by utilizing the principle of electromagnetic induction.
After the waste EPS cold pressing material is crushed, the residual moisture content in the material is high, the density is light, the floating is too large, and the feeding is not uniform, so that the yield of regeneration granulation is reduced, the quality of finished product particles is reduced, the abrasion of equipment is increased, and the production efficiency of regeneration granulation is finally reduced. The utility model discloses utilize centrifugal force and the thematic principle of mechanical friction, through mechanical means, will old and useless EPS cold pressing material remain moisture in smashing and detach, carry out the defoaming simultaneously and handle the effect that reaches the densification drying. Integrates the functions of material mixing, preheating, densification and compaction, drying and feeding. The materials processed by the rotating disc type feeding machine are granulated by a single screw extruder, and the production efficiency can be improved by more than three times.
A small amount of foaming agents such as propane, butane, pentane and the like are remained in the waste EPS cold pressing material, and the waste EPS cold pressing material is easy to degrade after multiple thermal histories. The utility model discloses the screw rod to single screw extruder has carried out the sectional type design, and the structure of feeding section, compression section, fillter, plastify section and extrusion section is optimized according to the function of each district section, has effectively solved the EPS foam and has remained the problem that the foamer eliminated inadequately, the excessive degradation of material in the granulation process of regeneration.
Waste EPS cold pressing materials often contain a large amount of fine impurities such as paper scraps, wood chips, aluminum foils, sand and stones, and the like, and when a conventional filter is used, the interval time of screen replacement of a filter screen is short, the operation is frequent, and the filtering effect is not ideal in the regeneration granulation process, so that the production efficiency of the regeneration granulation is further low, the impurity content of polystyrene regeneration particles is large, the application range is limited, and other adverse situations are further caused. The utility model discloses a secondary filter, double-plunger cylinder face back flush filter have the big characteristics of filter area, use 500~800 μm's filter screen to carry out coarse filtration, filter the big impurity such as wastepaper, saw-dust, aluminium foil in the material, can back flush a filter screen for 12 hours. The continuous full-automatic rotary filter can realize continuous filtration without shutdown under the condition that the impurity content of the regenerated plastic is 5-10 percent, thereby reducing the shutdown time and ensuring the stable operation of a single-screw main machine; the pressure at the discharge die head of the single-screw extruder is reduced to 3-5MPa, so that the fluctuation of the pressure at the discharge port is reduced, and the extrusion is more stable; and the loss of the materials is greatly reduced, and the loss of the materials due to impurity filtration is reduced from 5% to 1%.
Compared with the conventional dry-type strand cutting machine, the water ring cutting or underwater strand cutting machine has the advantages of high yield, labor saving, no waste generation during automatic connection of broken strips, regular cutting and space saving.
The utility model discloses have more extensive adaptability, not only be adapted to old and useless EPS cold pressing material, also be adapted to HIPS, ABS, PP, PE, PC etc. waste plastic's regeneration granulation, again can the rotation type feeding machine go up again and modify under the condition that increases the side feed, carry out high-quality regeneration and high-efficient application, further improve the performance and the added value of regenerated particle. Under the current condition of plastic product complex, diversification, the utility model discloses can provide a way of solving contradiction between reasonable economic scale and the nimble equipment configuration for waste plastic recycling.
Drawings
Fig. 1 is a schematic diagram of a control system of the present invention.
Fig. 2 is a partial enlarged view of the control system of the present invention.
Fig. 3 is a sectional view of the rotary disc feeder of the present invention.
Fig. 4 is a top view of the rotary cutter head of the rotary disc feeder of the present invention.
Fig. 5 is a schematic view of the screw structure of the single screw extruder of the present invention.
Detailed Description
The present invention will be further clearly understood by the following specific examples of the present invention, which are given below, but the following examples are not intended to limit the present invention.
Example 1: referring to fig. 1, 2, 3, 4 and 5, a control system for regeneration granulation of waste EPS cold pressing materials comprises a conveying belt I (1), a pulverizer (2), a conveying belt II (3), a homogenizing silo (4), a metal separator (5), a screw conveyor (6), a rotating disc type feeder (7), a single-screw extruder (8), a filter I (9), a filter II (10), a vacuum exhaust device (11), a granulator (12), a vibrating screen (13), a finished product silo (14) and a PLC (programmable logic controller) (15), and is characterized in that the conveying belt I (1) is connected with a feeding port (21) of the pulverizer (2), a feeding end (31) of the conveying belt II (3) is positioned at the lower part of a discharging port (22) of the pulverizer (2), a lower part (33) of the conveying belt II (3) is connected with a forced feeding screw (41) of the homogenizing silo (4), a discharging screw rod (43) of a homogenizing stock bin (4) is connected with a metal separator (5), the metal separator (5) is connected with a feed inlet (61) of a screw conveyor (6), a discharge outlet (62) of the screw conveyor (6) is connected with a cavity (71) of a rotary disc type feeding machine (7), the rotary disc type feeding machine (7) is tangentially connected with a feeding section (81) of a single screw extruder (8), a filter I (9), a filter II (10) and a vacuum exhaust device (11) are sequentially arranged on the single screw extruder (8), a granulator (12) is arranged at the rear end of the single screw extruder (8), a vibrating screen (13) is arranged behind the granulator (12), the vibrating screen (13) is connected with a finished product stock bin (14), and the devices are subjected to centralized operation control through a PLC (15).
The crusher (2) is a heavy crusher with an open rotating shaft.
The roller (32) above the feed opening (33) of the conveying belt II (3) is a permanent magnet roller, and a slag discharge opening (34) is arranged below the feed opening (33) in an inclined mode.
The homogenizing silo (4) consists of a forced feeding screw (41), a lifting screw (42) and a discharging screw (43).
The metal separator (5) is a pipeline type electromagnetic induction metal separator.
The rotary disc type feeder (7) is composed of a feeder cavity (71), a rotary cutter disc (72), damping fixed cutters (73), a material level sensor (74), a temperature sensor (75) and a water spray valve (76), wherein the rotary cutter disc (72) is formed by three or more groups and is spirally distributed, the damping fixed cutters (73) are arranged on the feeder cavity and are in a hook shape, the material level sensor (74) is arranged at the top of the feeder cavity (71), the temperature sensor (75) is arranged at the position, close to the rotary cutter disc (72), of the lower end of the feeder cavity (71), the water spray valve (76) is arranged at the upper end of the feeder cavity (71), and the temperature sensor (75) controls the opening and closing of the water spray valve (76) by detecting the temperature of materials in the feeder cavity (71).
The screw rod draw ratio of single screw extruder (8) be 38, by feed section (81), compression section (82), fillter section (83), plastify section (83), vacuum section (84) and extrude section (85) and constitute in proper order, feed section (81) are equidistant deep thread structure, compression section (82) are equidistant deep screw thread and groove depth by the depth-to-shallow, fillter section (83) comprise fluting screw thread and reverse thread, plastify section (84) comprise equidistant deep screw thread and barrier type screw thread, vacuum section (85) comprise equidistant unequal deep screw thread and groove depth by the depth-to-shallow, extrude section (86) and comprise equidistant equal deep screw thread.
The filter I (9) is a double-plunger cylindrical surface backwashing filter, the filtering working surface is a double-plunger cylindrical surface, and the filtering area is larger than 1800cm2(ii) a The filter II (10) is a continuous full-automatic rotary filter, the filtering working surface is a disc and can continuously clean the surface, and the filtering area is more than 1500cm2，(ii) a Pressure sensors are respectively arranged at the front end of the filter I (9), between the filter I (9) and the filter II (10) and at the rear end of the filter II (10).
The vacuum exhaust device (11) is positioned between the filter II (10) and the granulator (12) and is provided with two vacuum exhaust ports.
The granulator (12) is a water ring granulator.
Claims (10)
1. A control system for regeneration granulation of waste EPS cold pressing materials comprises a conveying belt I, a pulverizer, a conveying belt II, a homogenizing bin, a metal separator, a screw conveyor, a rotary disc type feeding machine, a single-screw extruder, a filter I, a filter II, a vacuum exhaust device, a granulator, a vibrating screen, a finished product bin and a PLC (programmable logic controller) The filter II and the vacuum exhaust device, the granulator is installed at the rear end of the single-screw extruder, the vibrating screen is installed behind the granulator and connected with a finished product bin, and the equipment is subjected to centralized operation control through the PLC.
2. The control system for regenerating and granulating waste EPS cold pressing materials as claimed in claim 1, wherein the crusher is a heavy crusher with an open rotating shaft.
3. The control system for regenerating and granulating waste EPS cold pressing materials according to claim 1, characterized in that a roller obliquely above a feed opening of the conveying belt II is a permanent magnet roller, and a slag discharge opening is arranged obliquely below the feed opening.
4. The control system for regeneration and granulation of waste EPS cold pressing materials as claimed in claim 1, wherein the homogenizing silo is composed of a forced feeding screw, a lifting screw and a discharging screw.
5. The control system for regenerating and granulating waste EPS cold pressing materials as claimed in claim 1, wherein the metal separator is a pipeline type electromagnetic induction metal separator.
6. The control system for regeneration and granulation of waste EPS cold pressing materials as claimed in claim 1, wherein the rotary disc type feeder comprises a feeder cavity, a rotary cutter disc, damping fixed cutters, a material level sensor, a temperature sensor and a water spray valve, wherein the rotary cutter disc is formed by three or more groups and is spirally distributed, the damping fixed cutters are arranged on the feeder cavity and are in a check mark shape, the material level sensor is arranged at the top of the feeder cavity, the temperature sensor is arranged at the lower end of the feeder cavity and close to the rotary cutter disc, the water spray valve is arranged at the upper end of the feeder cavity, and the temperature sensor controls the opening and closing of the water spray valve by detecting the temperature of the materials in the feeder cavity.
7. The control system for regeneration and granulation of the waste EPS cold pressing materials as claimed in claim 1, wherein the length-diameter ratio of the screw of the single screw extruder is 38, and the single screw extruder is composed of a feeding section, a compression section, a filtering section, a plasticizing section, a vacuum section and an extrusion section in sequence, wherein the feeding section is of an equidistant equal-depth thread structure, the compression section is of equidistant unequal-depth threads, the depth of a thread groove is changed from deep to shallow, the filtering section is composed of a slotted thread and a reverse thread, the plasticizing section is composed of equidistant equal-depth threads and a barrier-type thread, the vacuum section is composed of equidistant equal-depth threads, the depth of the thread groove is changed from deep to shallow, and the extrusion section is composed of equidistant equal-depth threads.
8. The control system for recycling granulation of waste EPS cold pressed material according to claim 1, characterized in that: the filter I is a double-plunger cylindrical surface backwashing filter, the filtering working surface is a double-plunger cylindrical surface, and the filtering area is larger than 1800cm2(ii) a The filter II is a continuous full-automatic rotary filter, the filter working surface is a disc and can continuously clean the surface, and the filter area is more than 1500cm2，(ii) a Pressure sensors are respectively arranged at the front end of the filter I, between the filter I and the filter II and at the rear end of the filter II.
9. The control system for recycling granulation of waste EPS cold pressed material according to claim 1, characterized in that: and the vacuum exhaust device is positioned between the filter II and the granulator and is provided with two vacuum exhaust ports.
10. The control system for recycling granulation of waste EPS cold pressed material according to claim 1, characterized in that: the granulator is underwater strand cutting or water ring cutting.
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| CN202020779215.9U CN212288257U (en) | 2020-05-12 | 2020-05-12 | Control system for regeneration granulation of waste EPS cold pressing material |
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| CN202020779215.9U CN212288257U (en) | 2020-05-12 | 2020-05-12 | Control system for regeneration granulation of waste EPS cold pressing material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113716291A (en) * | 2021-08-27 | 2021-11-30 | 扬州市职业大学(扬州市广播电视大学) | Automatic change loading attachment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113716291A (en) * | 2021-08-27 | 2021-11-30 | 扬州市职业大学(扬州市广播电视大学) | Automatic change loading attachment |
| CN113716291B (en) * | 2021-08-27 | 2023-03-14 | 扬州市职业大学(扬州市广播电视大学) | Automatic change loading attachment |
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