CN110253783A - A kind of ultra-fine starch plastic resin preparation facilities - Google Patents
A kind of ultra-fine starch plastic resin preparation facilities Download PDFInfo
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- CN110253783A CN110253783A CN201910558875.6A CN201910558875A CN110253783A CN 110253783 A CN110253783 A CN 110253783A CN 201910558875 A CN201910558875 A CN 201910558875A CN 110253783 A CN110253783 A CN 110253783A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
Abstract
The invention belongs to starch plastic resin processing technique fields, more particularly to a kind of ultra-fine starch plastic resin preparation facilities, main structure include starch vertical mill, cold mixer, full-starch plastic double screw extruder, die face earnestly and cyclone separator, vibrating screen and conveyer belt；Starch vertical mill is used to for common starch to be processed into ultra-fine starch, improves starch reaction activity, and full-starch plastic double screw extruder makes starch conversion, and adequately mixing, reaction generate thermoplasticity；The present invention can be widely used for the fields such as agricultural, gardening, food and drink, packaging, medical instrument, be able to achieve complete biodegradable under field conditions (factors) for producing a kind of using starch as primary raw material, fully biodegradable, non-hazardous to environment plastic product.
Description
Technical field:
The invention belongs to starch plastic resin processing technique fields, and in particular to a kind of ultra-fine starch plastic resin preparation dress
It sets, plastic product a kind of using starch as primary raw material for producing, fully biodegradable, non-hazardous to environment can
The fields such as agricultural, gardening, food and drink, packaging, medical instrument are widely used in, are able to achieve complete biodegradable under field conditions (factors).
Background technique:
Plastics are the byproducts of petroleum, be a kind of synthesis or with natural material it is modified obtained from high-molecular compound
For the solid material of matrix.Petroleum is a kind of non-renewable resources, and will finally face exhausted danger, to solve plastic waste
The problems such as abandoning caused by environment " white pollution " later and alleviating " oil crisis ", the research that people have carried out starch plastic is opened
Hair and popularization and application.Starch is the natural polymer that yield is only second to cellulose on the earth, its abundance, renewable, price
It is cheap, it can be used for producing starch-based degradable plastics by modification.Starch-based degradable plastics and product biological can drop
Solution, compost realize rubbish processing to be harmless, and starch-based bio plastics and product, which have, to be saved petroleum resources, reduces titanium dioxide
The advantage of carbon emission alleviates pollution of the plastics to environment to a certain extent, but in terms of the case where use, without fundamentally
Solve the problems, such as " white pollution ", still there is degradability deficiency, the problem that product cannot be degradable.
The degradability of starch plastics is directly related with its content of starch, and the ratio of starch is higher, and degradability is stronger,
But the problems such as starch proportion, which increases, will cause its poor processability, and water resistance is deteriorated, and wet strength reduces.Blended starch base at present
Plastics are the market mainstreams, and blending type starch plastics are that starch is blended with other polymeric materials, and wherein content of starch is
30%-50%, the usual non-degradable of other polymeric materials outside starch.Application No. is 201610078670.4 Chinese inventions
Patent discloses a kind of starch-based degradable biological plastics and preparation method thereof, consisting of commodity polymer plastics: 40-
85%, high hydrophobicity starch material: 10-50%, aliphatic polyester: 0.5-5%, oxidation accelerator: 0.1-5.5%；It is described
Starch-based degradable biological plastics preparation method the following steps are included: starch is carried out silicic acid anhydride, obtain high hydrophobic
Property starch material, then raw material components are mixed in proportion, master batch is made with double screw extruder, by master batch and general height
After the mixing of molecule plastics, starch-based degradable biological plastics is made along pressure, blow molding, at sky molding in injection molding.Application No. is
201410305309.1 Chinese invention patent discloses a kind of biodegradable thermoplastic starch-polyethylene film, by such as
The raw material of lower mass fraction is made: thermoplastic starch (self-control) 40%-50%, polyethylene 20%-30%, microcrystalline cellulose
0.5%-3%, calcium sulfate 2%-5%, oxidized polyethylene wax 1%-3%, zinc stearate 1%-2%, polyhydroxyalkanoate
1%-2.5%, ethylene glycol 0.5%-2%, sorbierite 0.5%-2%, maleic anhydride 0.5%-3%, glutaraldehyde 0.2%-1%.
The blending type starch plastics content of starch of the above prior art is not high enough, and degradability is not strong.
All starch biodegradation plastics refer to that material 70%-90% in addition to processing aid is all made of starch, have modeling
The property for expecting resin, can carry out thermoplastic processing, physical mechanical property is mainly determined by the characteristic of starch, is wanted to raw material
Ask harsher than common starch base plastics." all starch biodegradation plastics being published on " plastics industry " S1 phase in 2010
Status of Research " in a text, author investigation shows that the fineness of starch all has a significant impact to starch treatment processes and result.It is first
First fineness is higher, then starch is lower to the dependence of temperature and time during processing, is conducive to handle；Secondly starch
Mechanochemical Effect in thinning process will make starch molecule that new variation occur, as molecular chain rupture, end group generate electronics
Effect, specific surface area increase, molecule overall structure is loose, crystallinity declines, molal weight reduces etc., to make the unordered of starch
Change degree increases, and reactivity improves, filling capacity and biological degradability are improved, and answers after embodying Starch Micronization
The superiority become apparent for biodegradation material.Not yet discovery industrialize greatly using starch after refinement in the prior art
The equipment for producing complete degradable plastic resin in batches.
In the process of manufacture of conventional plastic, double screw extruder is important production equipment.Add with tradition reaction
Construction equipment is compared, which mainly has the advantage that the adjusting screw combination of " building block system ", reaction, devolatilization, granulation, molding add
Work is once completed, and cost of equipment, investment are less, and without using solvent, energy conservation and reduction public hazards are able to achieve continuous production, grasp
Make simple etc..When producing starch plastic, starch needs to carry out cross-linking reaction, makes the reduction of its light transmittance, resistance to acid and alkali, mechanical resistant add
Work, endurance of cutting enhancing, gelling performance improve, and water absorbing capacity weakens, if producing full starch using conventional double screw extruder
Biodegradable plastic can have that starch reaction is insufficient.Application No. is 201621453944.5 Chinese utility model is special
Benefit discloses a kind of nylon particles Twin screw extruder, by main support (1), heating feeding storehouse (2), extrusion forming storehouse (3), at
Type head (4), driving motor (5), helical axis (6), helical blade (7), loading hopper (8), observation panel (9), heating coil (10) group
At heating feeding storehouse (2) is mounted on the right side above main support (1), and extrusion forming storehouse (3) are fastened on heating feeding storehouse
(2) left side, moulded head (4) are fixed on the left side of extrusion forming storehouse (3), and driving motor (5) is mounted on heating feeding storehouse
Right side, helical axis (6) link together with driving motor (5), and helical blade (7) is arranged in the periphery of helical axis (6), loading hopper
(8) it is mounted on the top of heating feeding storehouse (2).Application No. is 201120330443.9 Chinese utility model patents, disclose
A kind of double-helix extruding device, including pedestal (1), power mechanism, extrusion system, feed system, the power mechanism are mounted on
On pedestal (1), power mechanism connects extrusion system, and extrusion system connects feed system；It is characterized by: the extrusion system packet
The machine barrel (2) being fixedly mounted on pedestal (1) is included, the opening connecting with feed system is set on machine barrel (2), machine barrel (2) is interior
It installs double helix screw rod (11), double helix screw rod (11) is connect with power mechanism；It is equipped on the machine barrel (2) and machine barrel (2)
The exhaust tube (3) of inner space connection.The utility model uses double helix screw-rod structure, improves production efficiency, eliminates sky
Influence of the gas to product, improves product qualification rate.Above-mentioned Twin screw extruder in the prior art due to spiro rod length deficiency,
Its melt shows as pseudoplastic fluid under starch viscous state, and the melting of starch crystalline region and plastic phase repel, therefore can not mould completely
Change, cannot be used for the production of full shallow lake biodegradable plastic.
Summary of the invention:
It, can not for common plastics production equipment in market it is an object of the invention to overcome disadvantage of the existing technology
The problem of suitable for large-scale serial production all starch biodegradation plastics, can produce manufacture and item easy to use in batches
Design provides a kind of ultra-fine starch plastic resin preparation facilities under part.
In order to achieve the above-mentioned object of the invention, ultra-fine starch plastic resin preparation facilities of the present invention, main structure
Include starch vertical mill, cold mixer, full-starch plastic double screw extruder, die face earnestly by function division and cyclonic separation fills
It sets, vibrating screen and conveyer belt；Starch vertical mill is used to common starch being processed into ultra-fine starch, improve starch reaction activity and
The performance of final finished；The outlet of starch vertical mill is connect using conveyer belt with cold mixer, and the ultra-fine starch after grinding is sent directly into
It is mixed in cold mixer with other raw materials；Cold mixer outlet and the feed inlet of full-starch plastic double screw extruder use conveyer belt
Connection；Die face earnestly and cyclone separator fervent cover opening end and full-starch plastic double screw extruder head paste
It closes, is also turned on the air-supply passage being connected to earnestly is covered to vibrating screen entrance, melt state material is through full-starch plastic twin-screw
Extrusion device is fervent by die face after squeezing out and cyclone separator cuts granulating and cooling, send into vibrating screen；Vibrating screen can
The particle being sticked together is removed, the satisfactory starch plastic master batch finished product of granular size is filtered out.Mixing machine and vibration
Screening market sale model.
Starch vertical mill of the present invention, main structure include casing, retarder, Vertical Mill motor, rotary valve, feeding
Channel, air outlet, mill, grinding roller, recycling bucket, separator, discharge port, transmission shaft and separation motor；Vertical Mill motor is fixed on machine
In shell outside bottom surface, retarder is fixed at casing internal bottom center, and the output shaft of Vertical Mill motor drives retarder；Under going up slightly
Thin mill is rotatably mounted to above retarder, is rotated by retarder band movable grinding disc；Rotation pair in every starch vertical mill
Title is provided with three sets of grinding rollers, grinding roller working position be it is round table-like, grinding roller is rotatably mounted on above casing internal mill, grinding roller energy
It is rotated about its center axis, the working surface of grinding roller and the upper surface of mill are parallel, and gap is 3-6mm between two surfaces, make grinding roller
It is able to maintain the certain thickness bed of material always between mill；The position of corresponding mill lower part on casing is arranged in air outlet,
It is connect with the air-heater of peripheral hardware；Feed alley is fixedly connected with casing, is connected to the inside and outside of casing, the outlet of feed alley
The top in mill center in casing is extended to, raw material can directly fall in mill center by feed alley after entrance entrance；Hello
Expect that rotary valve is installed at feeder connection, rotary valve selects commercially available star rotary valve, prevents gas while can be realized continuous blanking
Stream carries material and leaks, while also ensuring uniform blanking；It is completely close in addition to feed alley, discharge port and air outlet on casing
Envelope, prevents air-flow and material from leaking；The adjustable separation motor of revolving speed is fixed at the outer center of top of casing, separates motor
Separator rotation is driven by the transmission shaft being fixedly connected with separator；Separator be cylinder cage type sieve, separator interior with
Discharge port at the top of vertical mill communicates, and when dusty gas passes through the separator of rotation, fine grained brings separator by air-flow
Inside, coarse granule are directly stopped by separator collision, and the revolving speed of separator can be adjusted according to requiring, and revolving speed is higher, discharging
Fineness is thinner, plays the role of the product for screening fineness qualification；Funnelform recycling bucket is arranged below separator, recycling bucket
Inlet diameter be greater than the diameter of separator, the lower exit port for recycling bucket is located at mill overcentre.
Full-starch plastic double screw extruder of the present invention, main structure include base, driving motor, deceleration
Case, feeding motor, feed inlet, feeding-passage, feed screw, distributor box, machine barrel, heater, support base, twin-screw, air exhauster
Structure, head, top cover, air inlet, exhaust outlet, squeezing passage, bolt hole, cabinet, driving gear, driven gear, transmission shaft, shaft coupling
Device and cylinder；Driving motor, reduction gearbox and distributor box are mounted by means of bolts on base, and distributor box is by cabinet, driving tooth
Wheel, driven gear, transmission shaft and shaft coupling composition, reduction gearbox output shaft and driving gear pass through pin connection, driven gear and biography
By pin connection between moving axis, driving gear is meshed with two driven gears, and shaft coupling couples transmission shaft and twin-screw, connection
Axis device is other than transmitting torque effect, additionally it is possible to prevent twin-screw from bearing excessive load, play the role of overload protection；Driving
The output shaft of motor drives reduction gearbox, and driving gear drives two driven gear rotations, the power of driving motor is assigned as two
Group, transmission shaft deliver torque to twin-screw using shaft coupling, rotate twin-screw；Feeding motor is fixed at reduction gearbox
Top, feed inlet and feeding-passage are interconnected, and are fixed above distributor box, and the discharge port of feeding-passage is connected to machine barrel
On, it is communicated with the squeezing passage of inside machine barrel；Feed screw is horizontally set in feeding-passage, the output shaft of feeding motor with into
Expect screw rod connection, providing power for feed screw makes its rotation, after raw material enters feed inlet, under the promotion of feed screw sufficiently
Mixing after enter machine barrel in squeezing passage, in the case where feeding motor invariablenes turning speed, raw material be added squeezing passage speed
Degree and ingredient are kept constant, and are conducive to the stabilization of product quality.
The machine barrel that full-starch plastic double screw extruder is related in the present invention is made of multiple cylinder piecewise combinations, cylinder
Between connected using bolt passing through bolt hole, cylinder is fixedly connected by support base with base, and each inner barrel is provided with
The squeezing passage of perforation；The opening being connected to feeding-passage, Section of nine cylinder are provided with above the cylinder of driving motor one end
The opening that setting is connected with exhaust gear above body；In addition to first segment and Section nine, it is fixedly installed with above remaining cylinder
Heater, temperature needed for heater can reach reaction for the material heating in squeezing passage, each heater can individually be set
Surely the temperature heated；Twin-screw is arranged in inside the squeezing passage being connected, and the draw ratio of twin-screw is 50-54:1, material energy
It is enough adequately to mix, react under the movement effect of twin-screw in squeezing passage；Exhaust gear makes to be fixed by bolts to the 9th
It saves on cylinder, air inlet is connect with squeezing passage, and exhaust outlet is connect with external vacuum-pump line, and the conjunction of top seal formula lid is being arranged
It above mechanism of qi structure, is fixed using bolt, opening top cover can easily clear up inside exhaust gear；In the air pressure of external vacuum pump
Under effect, vapor, air, the escaping gas being blended in material can be discharged by exhaust gear, reduce fused materials
The generation of middle bubble guarantees the stabilization of product quality；Head is connect with protelum cylinder.
Die face of the present invention is earnestly and cyclone separator, main structure include fervent base, fervent motor, master
Axis, knife rest, cutter, fixing bolt, earnestly cover, air intake vent, air outlet, centrifugal blower and air supply duct；The adjustable heat of revolving speed
It cuts motor to be arranged on base, is earnestly provide with the position set on fervent base close to full-starch plastic double screw extruder head
It sets, fervent motor and fervent cover height-adjustable；The two sides earnestly covered are respectively arranged with air intake vent and air outlet, air intake vent and go out
Air port is communicated with the air supply duct of two sides；The main the tip of the axis that fervent motor stretches out is arranged in knife rest, and knife rest is fixed with main shaft
Connection, there are three ends for knife rest, arrange in rotational symmetric shape；Cutter is fixed on the end of knife rest by two fixing bolts,
Angle is 20-30 ° between cutter plane and head plane；Knife rest and cutter are contained in the inside earnestly covered；Earnestly cover both ends
Air supply duct one end and centrifugal blower be tightly connected, guarantee gas can not leak, the other end is connected to the feeding inlet of vibrating screen,
The height of centrifugal blower blowing mouth and earnestly cover keep horizontal, the commercially available plastic grain vibrating screen of vibration screening.
Compared with prior art, the present invention designed ultra-fine starch plastic resin preparation facilities high production efficiency, gained
Stable product quality, whole principle is reliable, easy to operate, and failure rate is low, and it is extensive to efficiently solve ultra-fine starch plastic resin
The problem of the problem of mass production and conventional equipment can not be applied to production full-starch plastic resin, the properties of product of production
It is good, under field conditions (factors) can be degradable, and can be realized the production of automation, application environment is friendly.
Detailed description of the invention:
Fig. 1 is ultra-fine starch plastic resin preparation facilities structural principle block diagram of the present invention.
Fig. 2 is the main structure schematic illustration of starch vertical mill of the present invention.
Fig. 3 is the main structure schematic illustration of full-starch plastic double screw extruder of the present invention.
Fig. 4 is the principle schematic diagram of distributor box in full-starch plastic double screw extruder of the present invention.
Fig. 5 is the principle schematic diagram of exhaust apparatus in full-starch plastic double screw extruder of the present invention.
Fig. 6 is the principle schematic diagram of full-starch plastic double screw extruder middle cylinder body of the present invention.
Fig. 7 is that die face of the present invention earnestly and in cyclone separator illustrate by the structural principle of die face hot-cutting device
Figure.
Fig. 8 be die face of the present invention earnestly and cyclone separator intermediate slide principle schematic diagram.
Fig. 9 is that die face of the present invention earnestly and in cyclone separator illustrate by the structural principle of cyclone separator
Figure.
Specific embodiment:
The invention will be further described by way of example and in conjunction with the accompanying drawings.
Embodiment 1:
The ultra-fine starch plastic resin preparation facilities that the present embodiment is related to, main structure include that starch is vertical by function division
Grinding machine, cold mixer, full-starch plastic double screw extruder, die face earnestly and cyclone separator, vibrating screen and conveyer belt；It forms sediment
Powder vertical mill is used to for common starch to be processed into ultra-fine starch, improves the performance of starch reaction activity and final finished；Starch
Vertical mill outlet is connect using conveyer belt with cold mixer, and the ultra-fine starch after grinding is sent directly into cold mixer mixed with other raw materials
It closes；Cold mixer outlet and the feed inlet of full-starch plastic double screw extruder use transmission band connection；Die face earnestly and whirlwind
The fervent cover opening end of separator is bonded with the head of full-starch plastic double screw extruder, and earnestly covers the air-supply being connected to
Channel is also turned on to vibrating screen entrance, and melt state material is after full-starch plastic double screw extruder extrusion by die face heat
It cuts and cyclone separator cuts granulating and cooling, send into vibrating screen；Vibrating screen can remove the particle being sticked together,
Filter out the satisfactory starch plastic master batch finished product of granular size.Mixing machine and vibration screening market sale model.
The present embodiment is used to produce the specific workflow of starch plastic resin are as follows:
(1) starch vertical mill being added in commercially available common raw starch, vertical mill entrance wind-warm syndrome is set as 120 DEG C -150 DEG C,
Obtain the ultra-fine starch that starch partial size is 5-13 microns；
(2) ultra-fine starch is mixed 10 minutes with each raw material such as plasticizer, lubricant in cold mixer；
(3) mixed material is delivered in full-starch plastic double screw extruder, the setting of extrusion device heating temperature
It is 130-170 DEG C, screw speed 120-140r/min, material is squeezed out with melt state.Screw speed is set as 120-140r/
Material can mix well when min, and cross-linking reaction is more thorough；
(4) after melt is squeezed out via extruder, earnestly and material is cut granulating by cyclone separator by die face, by sending
Wind channel is cooled and sent in vibrating screen, is removed the particle being sticked together using vibrating screen, is filtered out granular size and meet
It is required that starch plastic resin；
80% or more content of starch in ultra-fine starch plastic resin manufactured in the present embodiment uses the shallow lake after refinement
Powder improves the properties such as intensity, plasticizing, the processing of finished product, starch raw material used from corn, sorghum, potato,
Melon, cassava etc., it is from a wealth of sources, it is low in cost；The starch plastic of this method preparation can in the soil 90-180 days or so it is complete
Degradation, not will cause additional contamination, can be used to make the series of products such as film class, bag class, foaming kind, injection molding class.
Embodiment 2:
The present embodiment is related to starch vertical mill described in embodiment 1, main structure include casing 101, retarder 102,
Vertical Mill motor 103, rotary valve 104, feed alley 105, air outlet 106, mill 107, grinding roller 108, recycling bucket 109, separator
110, discharge port 111, transmission shaft 112 and separation motor 113；Vertical Mill motor 103 is fixed in 101 outside bottom surface of casing, is slowed down
Device 102 is fixed at 101 inner bottom surface center of casing, and the output shaft of Vertical Mill motor 103 drives retarder 102；Upper coarse and lower fine
Mill 107 is rotatably mounted to 102 top of retarder, is rotated by retarder 102 with movable grinding disc 107；Every starch vertical mill
Middle rotational symmetry is provided with three sets of grinding rollers 108,108 working position of grinding roller be it is round table-like, grinding roller 108 is rotatably mounted on casing
101 inside mill, 107 top, grinding roller 108 can be rotated about its center axis, the working surface of grinding roller 108 and the upper surface of mill 107
In parallel, gap is 3-6mm between two surfaces, makes to be able to maintain the certain thickness bed of material between grinding roller 108 and mill 107 always；
The position of corresponding 107 lower part of mill on casing 101 is arranged in air outlet 106, connect with the air-heater of peripheral hardware；Feed alley
105 are fixedly connected with casing 101, are connected to the inside and outside of casing 101, the outlet of feed alley 105 extends in casing 101
The top in 107 center of mill, raw material can directly fall in 107 center of mill by feed alley 105 after entrance entrance；Feeding is logical
Rotary valve 104 is installed in 105 inlet of road, and rotary valve 104 selects commercially available star rotary valve, can be realized anti-while continuous blanking
Only air-flow carries material and leaks, while also ensuring uniform blanking；Feed alley 105, discharge port 111 are removed on casing 101 and are sent
It is fully sealed outside air port 106, prevents air-flow and material from leaking；The adjustable separation motor 113 of revolving speed is fixed at casing 101
At outer center of top, separation motor 113 is rotated by the transmission shaft 112 being fixedly connected with separator 110 with flow separator 110；
Separator 110 is cylinder cage type sieve, and 110 inside of separator is communicated with the discharge port 111 being located at the top of vertical mill, dusty gas
When across the separator 110 of rotation, fine grained is brought into inside separator 110 by air-flow, and coarse granule is directly collided by separator 110
It stops, the revolving speed of separator 110 can be adjusted according to requiring, and revolving speed is higher, and discharge fineness is thinner, played screening fineness and closed
The effect of the product of lattice；Funnelform recycling struggles against 109 settings below separator 110, and the inlet diameter of recycling bucket 109, which is greater than, to be divided
The lower exit port of diameter from device 110, recycling bucket 109 is located at 107 overcentre of mill.
Specific work process when the present embodiment is refined for starch are as follows: hot wind is blown into starch vertical mill through air outlet 106
Interior, raw starch enters inside starch vertical mill by rotary valve 104 and feed alley 105, falls on 107 surface of mill；Mill
Disk 107 is driven by Vertical Mill motor 103 to be rotated, and the material on mill 107 is acted on due to centrifugal force from 107 center of mill to mill
107 edges are mobile, by mill 107 edge when by grinding roller 108 and mill 107 rolled and crush, pulverized material
Continue to the movement of 107 edge of mill, the hot-air flow being raised is taken away；Material in air-flow by top separator 110 when,
Coarse granule is stopped by the collision of separator 110, is fallen on 107 center of mill, is carried out next by recycling bucket 109 under the effect of gravity
Wheel is milled, and fine grained goes out to grind simultaneously with air-flow, and the dust arrester being connect with discharge port 111 is collected, and the powder being collected into is to grind
Product out；The fineness degree for detecting mill product, the revolving speed of separator 110 is constantly regulate according to product fineness degree, can be obtained
The ultra-fine starch that starch partial size is 5-13 microns.
Embodiment 3:
The present embodiment is related to full-starch plastic double screw extruder described in embodiment 1, and main structure includes base
201, driving motor 202, reduction gearbox 203, feeding motor 204, feed inlet 205, feeding-passage 206, feed screw 207, distribution
Case 208, machine barrel 209, heater 210, support base 211, twin-screw 212, exhaust gear 213, head 214, top cover 215, air inlet
Mouth 216, exhaust outlet 217, squeezing passage 218, bolt hole 219, cabinet 220, driving gear 221, driven gear 222, transmission shaft
223, shaft coupling 224 and cylinder 225；Driving motor 202, reduction gearbox 203 and distributor box 207 are mounted by means of bolts on base
On 201, distributor box 208 is made of cabinet 220, driving gear 221, driven gear 222, transmission shaft 223 and shaft coupling 224, is subtracted
Fast 203 output shaft of case and driving gear 221 are main by pin connection between driven gear 222 and transmission shaft 223 by pin connection
Moving gear 221 is meshed with two driven gears 222, and shaft coupling 224 couples transmission shaft 223 and twin-screw 212, shaft coupling
224 other than transmitting torque effect, additionally it is possible to prevent twin-screw 212 from bearing excessive load, play the role of overload protection；It drives
The output shaft of dynamic motor 202 drives reduction gearbox 203, and driving gear 221 drives two driven gears 222 to rotate, by driving motor
202 power is assigned as two groups, and transmission shaft 223 delivers torque to twin-screw 212 using shaft coupling 224, makes twin-screw 212
Rotation；Feeding motor 204 is fixed at 203 top of reduction gearbox, and feed inlet 205 and feeding-passage 206 are interconnected, and fixation is set
It sets above distributor box 208, the discharge port of feeding-passage 206 is connected on machine barrel 209, with the squeezing passage inside machine barrel 209
218 communicate；Feed screw 207 is horizontally set in feeding-passage 206, and the output shaft and feed screw 207 of feeding motor 204 connect
It connects, provides after power makes its rotation, raw material enter feed inlet 205 for feed screw 207, filled under the promotion of feed screw 207
Enter the squeezing passage 218 in machine barrel 209 after the mixing divided, in the case where 204 invariablenes turning speed of feeding motor, raw material, which is added, to be squeezed
The speed and ingredient of pressure passageway 218 are kept constant, and are conducive to the stabilization of product quality.
The machine barrel 209 that the present embodiment is related to is made of 10 225 piecewise combinations of cylinder, is worn between cylinder 225 using bolt
The connection of bolt hole 219 is crossed, cylinder 225 is fixedly connected with base 201 by support base 211, is provided with inside each cylinder 225
The squeezing passage 218 of perforation；It is provided with above the first segment cylinder 225 of 202 one end of driving motor and connects with feeding-passage 206
The opening being connected with exhaust gear 213 is arranged above Section of nine cylinder 225 for logical opening；In addition to first segment and Section nine,
Having heaters 210 is fixedly mounted above remaining cylinder 225, heater 210 can reach anti-for the material heating in squeezing passage 218
Required temperature is answered, each heater 210 can individually set the temperature of heating；The extruding being connected is arranged in twin-screw 212
Inside channel 218, the draw ratio of twin-screw 212 is 50-54:1, and material can be in squeezing passage 218 in the fortune of twin-screw 212
Movement lower sufficient mixing, reaction；Exhaust gear 213 makes to be fixed by bolts on Section of nine cylinder 225, air inlet 216 with
Squeezing passage 218 connects, and exhaust outlet 217 is connect with external vacuum-pump line, and the sealed lid of top cover 215 is closed in exhaust gear
213 tops, are fixed using bolt, and opening top cover 215 can easily clear up inside exhaust gear 213；In external vacuum pump
Under gas pressure, vapor, air, the escaping gas being blended in material can be discharged by exhaust gear 213, be reduced molten
The generation for melting bubble in material guarantees the stabilization of product quality；Head 214 is connect with protelum cylinder 225, the object of molten condition
Material is squeezed out via after head 214 with filametntary shape.
The present embodiment use 50-54:1 dual screw rods having ultra-high length-diameter, using double screw extruder high shear and
The crystallite of high temperature starch makes its macromolecular in unordered shape linear array, so that starch be made to have thermoplasticity, double spiral shells of lengthening
Bar enables material more fully to mix, react.
Embodiment 4:
The present embodiment is related to die face described in embodiment 1 earnestly and cyclone separator, main structure include hot-cutting machine
Seat 301, main shaft 303, knife rest 304, cutter 305, fixing bolt 306, earnestly covers 307, air intake vent 308, goes out fervent motor 302
Air port 309, centrifugal blower 310 and air supply duct 311；The adjustable fervent motor 302 of revolving speed is arranged on base 301, earnestly
The position on fervent base 301 close to full-starch plastic double screw extruder head 214, fervent motor 302 is arranged in cover 307
With 307 height-adjustables of fervent cover；Earnestly the two sides of cover 307 are respectively arranged with air intake vent 308 and air outlet 309, air intake vent 308
It is communicated with the air supply duct 311 of two sides with air outlet 309；The main shaft 303 that fervent motor 302 stretches out is arranged in knife rest 304
End, knife rest 304 are fixedly connected with main shaft 303, and there are three ends for knife rest 304, are arranged in rotational symmetric shape；Cutter 305 passes through
Two fixing bolts 306 are fixed on the end of knife rest 304, and angle is 20- between 214 plane of 305 plane of cutter and head
30°；Knife rest 304 and cutter 305 are contained in the inside of earnestly cover 307；Earnestly cover 307 both ends 311 one end of air supply duct with
Centrifugal blower 310 is tightly connected, and guarantees that gas can not leak, the other end is connected to the feeding inlet of vibrating screen, and centrifugal blower 310 is blown
The height in air port and earnestly cover 307 keep horizontal, the commercially available plastic grain vibrating screen of vibration screening.
The present embodiment is used to cut granulation and cooling specific work process are as follows: adjusts fervent motor 302 and earnestly cover 307
Height make fervent motor 302 and earnestly cover 307 cental axial positions and 214 center overlapping of axles of head, earnestly cover 307 is far from earnestly
The open end of 302 side of motor is bonded with head 214, and material is avoided to leak out from gap, and the position of setting base 301 makes cutter 305
Point of a knife at a distance from head 214 be 0.5-1.5mm；The revolving speed of fervent motor 302 is set as 900-1500r/mim, starting heat
After cutting motor 302, knife rest 304 cuts the filamental material squeezed out at head 214 with 303 high speed rotation of main shaft, cutter 305
Granulating；The wind that centrifugal blower 310 is blown out is delivered to the air intake vent 308 of earnestly cover 307 through air supply duct 311, and wind-force will be cut into
The material of particle is taken out of by air outlet 309, and the feeding inlet of vibrating screen, wind model process are delivered to using air supply duct 311
Middle particle completes cooling, then removes the particle being sticked together by vibrating screen, filters out the satisfactory starch modeling of granular size
Expect masterbatch resin.
Die face that the present embodiment is related to earnestly and cyclone separator, uses the air-cooled plastic master batch for allowing die face earnestly to obtain
It is separated from each other, cools down, and further screened by vibrating screen, solve full-starch plastic because temperature high viscosity is excessive after earnestly
And the phenomenon that causing particle agglomeration, production efficiency is improved compared to water cooling, it is energy saving, cost is reduced, there is certain warp
Ji property.
Claims (8)
1. a kind of ultra-fine starch plastic resin preparation facilities, it is characterised in that: main structure include starch vertical mill, cold mixer,
Full-starch plastic double screw extruder, die face earnestly and cyclone separator, vibrating screen and conveyer belt；The outlet of starch vertical mill
It is connect using conveyer belt with cold mixer, the ultra-fine starch after grinding is sent directly into cold mixer to be mixed with other raw materials；Cold mixer
Outlet and the feed inlet of full-starch plastic double-helix extruding device use transmission band connection；Die face is earnestly and cyclone separator
Fervent cover opening end is bonded with the head of full-starch plastic double-helix extruding device, is connect simultaneously with the air-supply passage being connected to earnestly is covered
Pass to vibrating screen entrance.
2. ultra-fine starch plastic resin preparation facilities according to claim 1, it is characterised in that: the starch Vertical Mill owner
Body structure includes casing, retarder, Vertical Mill motor, rotary valve, feed alley, air outlet, mill, grinding roller, recycling bucket, separation
Device, discharge port, transmission shaft and separation motor；Vertical Mill motor is fixed in casing outside bottom surface, and retarder is fixed on casing internal
At bottom center, the output of Vertical Mill motor is pivotally connected to retarder；Upper coarse and lower fine mill is rotatably mounted on retarder
Side；Symmetrically be provided with three sets of grinding rollers in every starch vertical mill, grinding roller working position be it is round table-like, grinding roller is rotatably installed
Above casing internal mill, the working surface of grinding roller and the upper surface of mill are parallel.
3. ultra-fine starch plastic resin preparation facilities according to claim 2, it is characterised in that: the air outlet setting exists
The position of corresponding mill lower part, connect with the air-heater of peripheral hardware on casing；Feed alley is fixedly connected with casing, is connected to casing
It is inside and outside, the outlet of feed alley extends to the top in mill center in casing；The installation rotation of feed alley inlet
Valve.
4. ultra-fine starch plastic resin preparation facilities according to claim 3, it is characterised in that: the separation motor speed
It is adjustable, it is fixed at the outer center of top of casing, separator is fixedly connected with transmission shaft；Separator is cylinder cage type sieve
Net, separator interior are communicated with the discharge port being located at the top of vertical mill；The recycling bucket is arranged below separator.
5. ultra-fine starch plastic resin preparation facilities according to claim 1, it is characterised in that: the full-starch plastic is double
Screw extrusion apparatus main structure includes base, driving motor, reduction gearbox, feeding motor, feed inlet, feeding-passage, charging spiral shell
Bar, machine barrel, heater, support base, twin-screw, exhaust gear, head, top cover, air inlet, exhaust outlet, squeezes and leads to distributor box
Road, bolt hole, cabinet, driving gear, driven gear, transmission shaft, shaft coupling and cylinder；The machine barrel is by multiple cylinder segmentation groups
It closes and constitutes, each inner barrel is provided with the squeezing passage of perforation, and twin-screw is arranged in inside the squeezing passage being connected.
6. ultra-fine starch plastic resin preparation facilities according to claim 5, it is characterised in that: the driving motor subtracts
Fast case and distributor box are mounted by means of bolts on base, distributor box by cabinet, driving gear, driven gear, transmission shaft and
Shaft coupling composition, reduction gearbox output shaft connect with driving gear, connects between driven gear and transmission shaft, driving gear and two
Driven gear is meshed, and shaft coupling couples transmission shaft and twin-screw；Feeding motor is fixed above reduction gearbox, feed inlet
It is interconnected, is fixed above distributor box, the discharge port of feeding-passage is connected on machine barrel, in machine barrel with feeding-passage
The squeezing passage in portion communicates；Feed screw is horizontally set in feeding-passage, and the output shaft of feeding motor is connect with feed screw；
It is provided with the opening being connected to feeding-passage above the cylinder of driving motor one end, setting above the cylinder near the other end
Having heaters is fixedly mounted in the opening being connected with exhaust gear, remaining cylinder top.
7. ultra-fine starch plastic resin preparation facilities according to claim 6, it is characterised in that: the air inlet passes through cylinder
Body upper opening is connect with squeezing passage, and exhaust outlet is connect with external vacuum-pump line, and top seal formula lid is closed in exhaust gear
Top.
8. ultra-fine starch plastic resin preparation facilities according to claim 1, it is characterised in that: the die face is fervent and revolves
Wind separator include fervent base, fervent motor, main shaft, knife rest, cutter, fixing bolt, earnestly cover, air intake vent, air outlet,
Centrifugal blower and air supply duct；The adjustable fervent motor of revolving speed is arranged on base, is earnestly provide with to set and lean on fervent base
The position of nearly full-starch plastic double screw extruder head, fervent motor and fervent cover height-adjustable；The two sides earnestly covered
It is respectively arranged with air intake vent and air outlet, air intake vent and air outlet are communicated with the air supply duct of two sides；Knife rest is arranged fervent
The main the tip of the axis that motor stretches out, knife rest are fixedly connected with main shaft, and there are three ends for knife rest, are arranged in rotational symmetric shape；Cutter
It is fixed on the end of knife rest, angle is 20-30 ° between cutter plane and head plane；Knife rest and cutter are contained in earnestly
The inside of cover；Earnestly the air supply duct one end at cover both ends and centrifugal blower are tightly connected, and the other end is connected to the pan feeding of vibrating screen
Mouthful, the height of centrifugal blower blowing mouth and earnestly cover keep horizontal.
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| CN201910558875.6A CN110253783A (en) | 2019-06-26 | 2019-06-26 | A kind of ultra-fine starch plastic resin preparation facilities |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910558875.6A CN110253783A (en) | 2019-06-26 | 2019-06-26 | A kind of ultra-fine starch plastic resin preparation facilities |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900923A (en) * | 2019-11-07 | 2020-03-24 | 湖南工业大学 | Starch foaming composite material extrusion pressing forming device and process thereof |
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