CN106633176A - Waste rubber continuous restoration machine and restoration process - Google Patents
Waste rubber continuous restoration machine and restoration process Download PDFInfo
- Publication number
- CN106633176A CN106633176A CN201710060473.4A CN201710060473A CN106633176A CN 106633176 A CN106633176 A CN 106633176A CN 201710060473 A CN201710060473 A CN 201710060473A CN 106633176 A CN106633176 A CN 106633176A
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- machine
- sizing material
- gear block
- screw
- recovery
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 46
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008569 process Effects 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 78
- 239000012530 fluid Substances 0.000 claims abstract description 43
- 238000001125 extrusion Methods 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims description 83
- 238000004513 sizing Methods 0.000 claims description 74
- 230000000694 effects Effects 0.000 claims description 19
- 239000011230 binding agent Substances 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000010008 shearing Methods 0.000 claims description 9
- 230000008961 swelling Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 8
- 238000011069 regeneration method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005987 sulfurization reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000004636 vulcanized rubber Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229920002209 Crumb rubber Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2317/00—Characterised by the use of reclaimed rubber
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
-
- 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
Abstract
The invention discloses a waste rubber continuous restoration machine. The waste rubber continuous restoration machine comprises a restoration machine host, a supercritical fluid preparation and injection device and a temperature control system, wherein the restoration machine host comprises a machine frame, a machine cylinder located on the machine frame, a motor and a drive system; a restoration machine twin-screw part which is connected with the drive system is arranged in the machine cylinder; a material feeding mechanism is arranged on the machine cylinder; the restoration machine twin-screw part comprises five functional areas, including a material pressing area, a softening area, a supercritical fluid injection area, a restoration area and an extrusion area; the functional areas comprise screw elements of different structures. Furthermore, the invention discloses a restoration process of the restoration machine, no chemical reagent is added in a restoration process, the production energy consumption is low, the restoration quality of waste rubber is good, the structure of equipment is simple, operation procedures are few and the industrial investment is low.
Description
Technical field
The present invention relates to scrap rubber technical field of regeneration, more particularly to a kind of scrap rubber exempt from the continuous recovery machine of chemical reagent and
The process of reclaimed rubber is prepared using the equipment.
Background technology
The rubber of unique energy is extensively applied in society, and because its molecular weight is huge natural degradation is difficult to,
Substantial amounts of rubber is piled up and causes " black pollution " and the wasting of resources.China is rubber consumption big country, but by weather and
The restriction of region, domestic rubber sources wretched insufficiency, therefore realize the recycling utilization of waste old to solving " black dirt
Dye ", fill up rubber sources scarcity and be significant.Traditional " HTHP dynamic desulfurization " regeneration technology have high energy consumption,
Potential safety hazard is serious, the shortcomings of regeneration effect is poor, process is discontinuous, thus is gradually replaced.Rising in recent years " with machine
For tank " technology, make the production technology that waste old restores that there is simple production process, green, environmental protection, company using screw extruder
The advantages of continuous property strong favorable regeneration effect.
In Chinese patent literature, publication No. is that CN104129057A, a kind of entitled scrap rubber serialization regeneration are de-connected
Disclose a kind of scheme (particular content referring to specification in full) in the document of Plasticator and process, including feeding pressure mechanism,
De-connect mechanism, the part of shaping mechanism three, waste old from after feeding pressure mechanism addition, through de-connecting mechanism de-connect effect after,
Compression molding in shaping mechanism.The core of whole equipment is to de-connect mechanism, screw rod by what screw element and driving element were constituted
Element includes rotor set, sound group, bevel gear set.Scheme in the document strengthens machinery and de-connects effect, improves revival
Really, but whole set equipment installs complicated, quiet disk group is designed with machine barrel, increase the difficulty of processing and preparation cost of equipment,
And chemical reagent is with the addition of in production process, the pollution of reconstituted product is easily caused.
Additionally, in Chinese patent literature, publication No. is CN102977404B, a kind of entitled dual-band twin-screw extruder company
A kind of scheme (particular content is referring to specification full text) is disclosed in the document of the continuous method for preparing reclaimed rubber, will be through pretreatment
Shoddy be initially charged counter rotation twin screw extruder, carry out shear extrusion again into parallel dual-screw extruding machine after extrusion, make
Standby reclaimed rubber better performances, but whole operation process is complicated, produces line length, repeats heating, cooling operation and causes the energy
Waste.
Supercritical fluid technique is the nearly 30 years chemical industry new technologies for growing up, with excellent solvability, mass transfer energy
The advantages of power, low viscosity, high diffusibility, under certain condition can be swelling rapidly by waste old, it is that waste old recovery is carried
Having supplied may.
In Chinese patent literature, publication No. is CN204454972U, a kind of entitled desulfurization regeneration of waste rubber powder sets
A kind of scheme (particular content is referring to specification full text) is disclosed in standby document, waste and old sizing material occurs de- in the presence of microwave
Reaction of Salmon-Saxl, subsequently enters the first extruder, and what is be connected with the first extruder is supercritical fluid delivery device, in supercritical fluid
Promote regenerative agent to be uniformly distributed in waste rubber powder, sizing material is further regenerated；Second extruder is used for the glue of regeneration
Anticipate type.Sizing material is subject to the desulfidation up to ten minutes in whole production process, easily causes backbone breaking；And production line
Including an electromagnetic heater, two extruderses, a supercritical fluid delivery device, device category is various, and production line is superfluous
Long, one-time investment is huge.
In Chinese patent literature, publication No. be CN202357411U, a kind of entitled supercritical fluid secondary process into
A kind of auxiliary equipment of processing thermoplastic resin is disclosed in the document of complete equipment, the complete equipment is mainly used in supercritical fluid and takes
For plasticizer, the difficulty of processing of thermoplastic resin is reduced.Its range of application is narrow, it is impossible to restores for scrap rubber and provides enough shearings
Power.
In sum, existing production equipment and production technology can not meet the requirement of scrap rubber regeneration, therefore, compel to be essential
A kind of new production equipment and technique is wanted to substitute existing equipment and technique.
The content of the invention
To solve above-mentioned technical problem, the invention provides a kind of continuous recovery machine of scrap rubber and recovery process, to reach
Add without any chemical reagent in recuperation, energy consumption is low, and waste old recovering quality is good, device structure is simple, operation
Operation is few, the low purpose of industrial investment.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of continuous recovery machine of scrap rubber, including restore machine host, supercritical fluid and prepare and injection device, and temperature control
System, the recovery machine host includes frame, the machine barrel in frame, motor and transmission system, is provided with the machine barrel
The recovery machine twin-screw being connected with transmission system, arranges feeding mechanism on the machine barrel, the recovery machine twin-screw includes binder
Area, softened zone, supercritical fluid injection region, recovery five functional areas in area and extrusion zone；The binder area includes single head Changeable Lead
Screwing element one；The softened zone includes gear block one, gear block two and the list between gear block one and gear block two
Head thread delivery element；The supercritical fluid injection region includes voltage drop element, and the voltage drop element is one start screw element；Institute
State and restore single head Changeable Lead screwing element two, the reverse spiral shell of gear block three, double end that area includes being sequentially connected by the sizing material direction of motion
It is texel part one, double thread delivery element one, gear block four, double end reverse-flight elements two, double thread delivery element two, big
Lead thread element and double thread delivery element three；The extrusion zone includes Homogenizing Element and double end Changeable Lead screwing element,
The Homogenizing Element is the double thread element that notch is provided with spiral shell rib.
In such scheme, the helical pitch of the single head Changeable Lead screwing element one and single head Changeable Lead screwing element two is along glue
The direction of motion of material is tapered into；The maximum helical pitch size of the single head Changeable Lead screwing element one is identical with spiral shell rib external diameter, most
The size of little helical pitch is 2/3rds of maximum helical pitch size；The maximum helical pitch of the single head Changeable Lead screwing element two is less than
Spiral shell rib external diameter, minimum helical pitch is not less than 2/3rds of spiral shell rib external diameter.
In such scheme, the gear block one and gear block two are according to 30 ° of mistake by two 7 8mm thick gear blocks
Row angle splicing composition, the gear block three and gear block four are spelled according to 30 ° of stagger arrangement angle by two six 8mm thick gear blocks
Connect composition.
In such scheme, the helical pitch of the one start screw element of the supercritical fluid injection region and the size phase of spiral shell rib external diameter
Together.
In such scheme, the maximum helical pitch of the double end Changeable Lead screwing element of the extrusion zone for spiral shell rib external diameter four/
Three, minimum helical pitch 10mm fewer than maximum helical pitch.
In further scheme, the opening direction of the notch is vertical with place spiral shell rib, and notch is in sizing material flow direction
On volume be gradually reduced.
In further technical scheme, the recovery machine twin-screw is homodromal twin-screw, twin-screw rotating Vortex
Shear rate is bigger.
A kind of recovery process of the continuous recovery machine of scrap rubber, including following technical process：
(1) it is fed forward under the frictional drag effect of recovery machine twin-screw into the waste and old sizing material for restoring machine host, by
Helical pitch in binder area is tapered into, and sizing material becomes closely knit, and the motion for sizing material provides enough back pressures and is fed forward；
(2) into softened zone sizing material first pass around gear block one shear tension effect, realize after preliminarily softened through
Delivering into gear block two for one start screw delivery element, realizes further softening；
(3) in the large space that voltage drop element of the sizing material inside supercritical fluid injection region after softening is provided with it is overcritical
Fluid is contacted, fully swelling；
(4) enter and restore in area, swelling sizing material is subject to shearing splitting and stretching action in gear block three, through double end
In the presence of reverse thread delivery element one, the time of staying of sizing material is extended, and reaches the effect of preliminary recovery；It is preliminary to restore
Sizing material through double thread delivery element one, be again introduced into carrying out supplementing in gear block four and double end reverse-flight elements two cutting
Tearing is split and is stretched, and double thread delivery element two is transported to the sizing material for supplementing recovery in steep-lead thread element, carries out most
Whole recovery reaction, the sizing material Jing double threads delivery element three for restoring completely enters extrusion zone；
(5) in the Homogenizing Element of extrusion zone, Jing after the irregular flowing that notch is formed is sufficiently mixed, through double thread
Element completes whole recovery and reacts from extrusion in machine host is restored.
In such scheme, supercritical fluid is 0.005～0.02 with the mass ratio of scrap rubber, the rotating speed of recovery machine twin-screw
For 40～80r/min, the temperature control in recovery machine twin-screw binder area at 50～80 DEG C, the temperature control of softened zone 90～
110 DEG C, supercritical fluid injection region and restore area temperature control at 120～150 DEG C, the temperature of extrusion zone is 60 DEG C～80
℃。
The continuous recovery machine of scrap rubber and recovery process provided by above-mentioned technical proposal, the present invention is provided using recovery machine
Controlled stretching shearing synergy, C-S, S-S cross-bond in waste old is selectively interrupted under supercritical environment, realize
The recovery of waste old.The advantage of this programme is to add without any chemical reagent in recuperation, and energy consumption is low, waste and old rubber
Glue recovering quality is good, and device structure is simple, and operational sequence is few, and industrial investment is low.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described.
Fig. 1 is a kind of structural representation of the continuous recovery machine of scrap rubber disclosed in the embodiment of the present invention；
Fig. 2 is the structural representation of the recovery machine host disclosed in the embodiment of the present invention；
Fig. 3 is the structural representation of the recovery machine twin-screw disclosed in the embodiment of the present invention；
Fig. 4 is the structural representation of the softened zone disclosed in the embodiment of the present invention；
Fig. 5 is the structural representation in the recovery area disclosed in the embodiment of the present invention；
Expanded schematic diagrams of the Fig. 6 for the Homogenizing Element disclosed in the embodiment of the present invention in a circumferential direction.
In figure, I, binder area；IIth, softened zone；IIIth, supercritical fluid injection region；IVth, area is restored；Vth, extrusion zone；1st, it is multiple
Former machine host；2nd, supercritical fluid is prepared and injection device；3rd, temperature control system；4th, frame；5th, machine barrel；6th, motor；7th, power train
System；8th, recovery machine twin-screw；9th, feeding mechanism；10th, single head Changeable Lead screwing element one；11st, gear block one；12nd, gear block two；
13rd, one start screw delivery element；14th, voltage drop element；15th, single head Changeable Lead screwing element two；16th, gear block three；17th, double end is anti-
To screwing element one；18th, double thread delivery element one；19th, gear block four；20th, double end reverse-flight elements two；21st, double end
Screw thread delivery element two；22nd, steep-lead thread element；23rd, double thread delivery element three；24th, Homogenizing Element；25th, double end becomes
Lead thread element；26th, notch.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described.
The invention provides a kind of continuous recovery machine of scrap rubber and recovery process, specific embodiment is as follows：
As shown in figure 1, a kind of continuous recovery machine of scrap rubber, including restore machine host 1, supercritical fluid and prepare and injection dress
Put 2, and temperature control system 3.As shown in Fig. 2 restore machine host 1 and including frame 4, the machine barrel 5 in frame 4, motor 6 and passing
The homodromal recovery machine twin-screw 8 being connected with transmission system 7 is provided with dynamic system 7, machine barrel 5, feeding is set on machine barrel 5
Mechanism 9；Machine barrel 5 collectively constitutes extrusion system with recovery machine twin-screw 8, completes the Solid Conveying and Melting to sizing material, softening, restores and squeeze
Go out.
As shown in figure 3, recovery machine twin-screw 8 includes realizing the binder area of continuous flow rate, softens and build the soft of pressure by sizing material
Change area, for supercritical fluid and waste old be fully contacted offer sufficient space supercritical fluid injection region, in overcritical ring
That what is fully restored under the shear tension synergy of recovery machine twin-screw under border restores area, restores squeezing for the uniform and stable extrusion of glue
Go out five, area functional areas.
Binder area I includes a pair of single head Changeable Lead screwing elements 1, and the structure of single head Changeable Lead screwing element 1 is special
Point is that under conditions of spiral groove depth is constant, thread segment helical pitch is tapered into, so as to reduce flight channel volume.Single head Changeable Lead screw thread
The maximum helical pitch size of element 1 is identical with spiral shell rib external diameter, and the size of minimum helical pitch is 2/3rds of maximum helical pitch size.
It is fed forward under the frictional drag effect of recovery machine twin-screw 8 into the waste and old sizing material for restoring machine host 1, and due to screw channel body
Long-pending diminishing is constantly closely knit, and this provides enough back pressures for the motion of sizing material；The two screw portions engagement for cooperating, reason
By cannot above accomplish longitudinal opening, transverse seal, but by adjusting spiral shell rib structure, sizing material locomitivity in the horizontal is reduced,
Ensure that recovery machine twin-screw has good conveying capacity to sizing material.
As shown in figure 4, softened zone II includes gear block 1, gear block 2 12 and positioned at gear block 1 and gear block
One start screw delivery element 13 between 2 12, gear block 1 and gear block 2 12 be by two 7 8mm thick gear blocks by
According to 30 ° of stagger arrangement angle splicing composition.Rubber hardness after sulfuration is big, it is difficult to deform, and softens heat of the required heat by machine barrel
Transmission and sizing material are subject to the plastic dissipation offer of shear action generation, the thickness of gear block and the increase of number, are conducive to carrying
The high shear action to sizing material, improves and softens efficiency.Gear block is in itself a kind of consumption pressure element, and gear block is defeated with one start screw
Send element to use cooperatively, on the premise of the shear action advantage of gear block has been played, in sizing material flow process pressure set up,
Ensure that good transportation ability of the recovery machine twin-screw to sizing material.Sizing material is engaged when the gap between gear block is flowed through
Shear action between block spiral shell rib, because the heat that viscous dissipation is produced accelerates the softening of sizing material, one start screw delivery element
Helical pitch it is with the minimum helical pitch of single head Changeable Lead screwing element one consistent, it is ensured that the conveying capacity of twin-screw, it is to avoid local
Shearing is excessive, causes molecular chain degradation serious.
Supercritical fluid injection region III includes voltage drop element 14, and voltage drop element 14 is one start screw element, and one start screw is first
The helical pitch of part is equivalently-sized with spiral shell rib external diameter.Compared to other screwing elements, by adding large pitch, make it that there is bigger spiral shell
Sump volume, it is ensured that the strand rolled up in the sizing material being above compacted has enough spaces to realize upholding, and realizes that sizing material is loose, loosely
Sizing material and supercritical fluid contact area become big, be conducive to improving diffusivity of the supercritical fluid in sizing material, it is ensured that useless
The swelling effect of rubber.
As shown in figure 5, restore single head Changeable Lead screwing element 2 15 that area IV includes being sequentially connected by the sizing material direction of motion,
Gear block 3 16, double end reverse-flight elements 1, double thread delivery element 1, gear block 4 19, double end reverse thread
Element 2 20, double thread delivery element 2 21, steep-lead thread element 22 and double thread delivery element 3 23.Single head becomes leads
The helical pitch of journey screwing element 2 15 is tapered into along the direction of motion of sizing material, and the maximum of single head Changeable Lead screwing element 2 15 is led
Journey is less than spiral shell rib external diameter, and minimum helical pitch is not less than 2/3rds of spiral shell rib external diameter.Gear block 3 16 and gear block 19 4 be by
Six 8mm thick two gear blocks composition, the head number for reducing gear block be in order to locally reduce it is swelling after sizing material be subject to point
Scattered immixture, it is to avoid sizing material is caused falling sharply for molecular weight in local by excessive shearing force.Two gear blocks in the region
Stagger arrangement angle be 30 °, with good axial conveying capacity and shear action, between gear block and gear block gap be 2mm, nibble
It is 0.5mm to close gap between block and machine tube inner wall, the Pan Ding of one gear block of mesh regional between gear block and another
The packing of gear block constitutes the closed area that volume can change, and sizing material is sheared by continuous conversion in these regions
Tear and stretching action, realize the preliminary recovery of waste and old sizing material.What is be joined directly together with gear block is reverse-flight elements, plays and prolongs
Effect of the long sizing material in the recovery machine internal stops time.Gear block 4 19 plays supplementary recovery with double end reverse-flight elements 2 20
Effect；The structure design of steep-lead thread element 22 is inspired by engagement rotor of internal mixer, a steep-lead thread element
The screw channel of spiral shell rib and another steep-lead thread element constitute variable volume region, sizing material is subject to extruding repeatedly in the region
With tear effect, waste and old sizing material is set to complete final recovery reaction.
The function of extrusion zone V is that, by the extrusion of the sizing material uniformly continuous for restoring, including Homogenizing Element 24 and double end become and lead
Journey screwing element 25, Homogenizing Element 24 is the double thread element that notch 26 is provided with spiral shell rib.Referring to Fig. 6, the opening of notch 26
Direction is vertical with place spiral shell rib, and volume of the notch 26 on sizing material flow direction is gradually reduced.The design of notch 26 is enhanced
The reflowing result of sizing material, is conducive to being well mixed recovery sizing material, and the notch 26 that volume is gradually reduced makes recovery sizing material exist
There is volume change when flowing through, play a part of to supplement recovery；And sizing material is received when the notch 26 of Volume Changes is flowed through
To stretching action play the role of to interrupt the cross-linked network that minority is not yet restored completely.The maximum of double end Changeable Lead screwing element 25
Helical pitch is 3/4ths of spiral shell rib external diameter, and minimum helical pitch 10mm fewer than maximum helical pitch, lead change is conducive to building for axial compressive force
It is vertical, sizing material steady extruding.
A kind of recovery process of the continuous recovery machine of scrap rubber, including following technical process：
Waste Crumb rubber is added into feeding mechanism, open it is continuous restore machine host 1, sizing material is in self gravitation and feeding mechanism
Effect is lower to enter machine barrel 4, is fed forward under the frictional drag effect of recovery machine twin-screw 8, is squeezed by continuous uniform when there is sizing material
Open supercritical fluid when going out to prepare and injection device 2.Supercritical fluid is 0.005～0.02 with the mass ratio of scrap rubber, multiple
The rotating speed of former machine twin-screw 8 is 40～80r/min, the temperature control in binder area I at 50～80 DEG C, the temperature control of softened zone II
At 90～110 DEG C or so, supercritical fluid injection region III and the temperature control in area IV is restored at 120～150 DEG C or so, extrusion zone
V temperature is at 60 DEG C～80 DEG C.
Whole recovery process is completed as follows into the waste and old sizing material for restoring machine host 1：
(1) it is fed forward under the frictional drag effect of recovery machine twin-screw 8 into the waste and old sizing material for restoring machine host 1,
Because the helical pitch in binder area I is tapered into, sizing material becomes closely knit, and the motion for sizing material provides enough back pressures and is fed forward；
(2) sizing material into softened zone II first passes around the shear tension effect of gear block 1, after realizing preliminarily softened
Delivering into gear block 2 12 through one start screw delivery element 13, realizes further softening；
(3) in the large space that voltage drop element 14 of the sizing material supercritical fluid injection region III inside after softening is provided with surpass
Critical fluids are contacted, fully swelling；
(4) enter and restore in area IV, swelling sizing material is subject to shearing splitting and stretching action in gear block 3 16, passes through
In the presence of double end reverse-flight elements 1, the time of staying of sizing material is extended, and reaches the effect of preliminary recovery；It is preliminary multiple
Former sizing material is again introduced into entering in gear block 4 19 and double end reverse-flight elements 2 20 through double thread delivery element 1
Row supplements shearing splitting and stretching, and the sizing material for supplementing recovery is transported to steep-lead thread element by double thread delivery element 2 21
In 22, final recovery reaction is carried out, the sizing material Jing double threads delivery element 3 23 for restoring completely enters extrusion zone；
(5) in the Homogenizing Element 24 of extrusion zone, Jing after the irregular flowing that notch 26 is formed is sufficiently mixed, through double end
Changeable Lead screwing element 25 completes whole recovery and reacts from extrusion in machine host 1 is restored.
Sizing material is extruded refining shaping after restoring, finally park warehouse-in.
Specific embodiment one：
Reaction condition：Supercritical fluid is 1 with the mass ratio of scrap rubber:100, the rotating speed of recovery machine twin-screw 8 is 60r/
Min, the temperature control in binder area I at 70 DEG C, the temperature control of softened zone II at 100 DEG C, supercritical fluid injection region III and multiple
At 135 DEG C, the temperature of extrusion zone V is 70 DEG C to the temperature control in former area IV.
Jing measurings, restore the performance of glue：Ash content=7.0%, acetone extract=17.0%, Mooney viscosity ML100
DEG C (1+4min)=45；According to GB/T13460-2008 sulfurizing formula sulfurations again, mechanical property of vulcanized rubber is obtained as follows:Tensile strength
=15.3MPa, elongation rate of tensile failure=474.47%.
Specific embodiment two：
Reaction condition：Supercritical fluid is 2 with the mass ratio of scrap rubber:100, the rotating speed of recovery machine twin-screw 8 is 80r/
Min, at 55 DEG C, the temperature control of softened zone II supercritical fluid injection region III and is restored at 90 DEG C for the temperature control in binder area I
At 125 DEG C, the temperature of extrusion zone V is 60 DEG C to the temperature control in area IV.
Jing measurings, restore the performance of glue：Ash content=6.5%, acetone extract=16.2%, Mooney viscosity ML100
DEG C (1+4min)=40；According to GB/T13460-2008 sulfurizing formula sulfurations again, mechanical property of vulcanized rubber is obtained as follows:Tensile strength
=14.9MPa, elongation rate of tensile failure=500.07%.
Specific embodiment three：
Reaction condition：Supercritical fluid is 1 with the mass ratio of scrap rubber:100, the rotating speed of recovery machine twin-screw 8 is 50r/
Min, the temperature control in binder area I at 75 DEG C, the temperature control of softened zone II at 110 DEG C, supercritical fluid injection region III and multiple
At 145 DEG C, the temperature of extrusion zone V is 75 DEG C to the temperature control in former area IV.
Jing measurings, restore the performance of glue：Ash content=7.2%, acetone extract=17.4%, Mooney viscosity ML100
DEG C (1+4min)=48；According to GB/T13460-2008 sulfurizing formula sulfurations again, mechanical property of vulcanized rubber is obtained as follows:Tensile strength
=15.7MPa, elongation rate of tensile failure=468.98%.
Explanation：National superfine Al standards:Ash content≤10%, acetone extract≤18%, ML100 DEG C of (1+ of Mooney viscosity
4min)≤95, tensile strength >=14.0Mpa, elongation at break >=420%.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (9)
1. a kind of continuous recovery machine of scrap rubber, including recovery machine host, supercritical fluid are prepared and injection device, and temperature control system
System, it is described recovery machine host include frame, the machine barrel in frame, motor and transmission system, be provided with the machine barrel with
The connected recovery machine twin-screw of transmission system, arranges feeding mechanism, it is characterised in that the recovery machine twin-screw on the machine barrel
Including binder area, softened zone, supercritical fluid injection region, recovery five functional areas in area and extrusion zone；The binder area includes single
Head Changeable Lead screwing element one；The softened zone includes gear block one, gear block two and positioned at gear block one and gear block two
Between one start screw delivery element；The supercritical fluid injection region includes voltage drop element, and the voltage drop element is single head spiral shell
Texel part；It is single head Changeable Lead screwing element two, gear block three that the recovery area includes being sequentially connected by the sizing material direction of motion, double
Head reverse-flight elements one, double thread delivery element one, gear block four, the conveying of double end reverse-flight elements two, double thread
Element two, steep-lead thread element and double thread delivery element three；The extrusion zone includes Homogenizing Element and double end Changeable Lead
Screwing element, the Homogenizing Element is the double thread element that notch is provided with spiral shell rib.
2. a kind of continuous recovery machine of scrap rubber according to claim 1, it is characterised in that the single head Changeable Lead screw thread unit
The helical pitch of part one and single head Changeable Lead screwing element two is tapered into along the direction of motion of sizing material；The single head Changeable Lead screw thread
The maximum helical pitch size of element one is identical with spiral shell rib external diameter, and the size of minimum helical pitch is 2/3rds of maximum helical pitch size；Institute
The maximum helical pitch of single head Changeable Lead screwing element two is stated less than spiral shell rib external diameter, minimum helical pitch be not less than spiral shell rib external diameter three/
Two.
3. the continuous recovery machine of a kind of scrap rubber according to claim 1, it is characterised in that the gear block one and gear block
Two are made up of two 7 8mm thick gear blocks according to 30 ° of stagger arrangement angle splicing, the gear block three and gear block four be by
Six two thick gear blocks of 8mm are constituted according to 30 ° of stagger arrangement angle splicing.
4. a kind of continuous recovery machine of scrap rubber according to claim 1, it is characterised in that the supercritical fluid injection region
One start screw element helical pitch it is equivalently-sized with spiral shell rib external diameter.
5. the continuous recovery machine of a kind of scrap rubber according to claim 1, it is characterised in that the double end of the extrusion zone becomes to be led
The maximum helical pitch of journey screwing element is 3/4ths of spiral shell rib external diameter, minimum helical pitch 10mm fewer than maximum helical pitch.
6. the continuous recovery machine of a kind of scrap rubber according to claim 1, it is characterised in that the opening direction of the notch with
Place spiral shell rib is vertical, and volume of the notch on sizing material flow direction is gradually reduced.
7. the continuous recovery machine of a kind of scrap rubber according to claim 1, it is characterised in that the recovery machine twin-screw is same
To the twin-screw of rotation.
8. the recovery process of the continuous recovery machine of a kind of scrap rubber as claimed in claim 1, it is characterised in that including following technique
Process：
(1) it is fed forward under the frictional drag effect of recovery machine twin-screw into the waste and old sizing material for restoring machine host, due to pressure
The helical pitch in material area is tapered into, and sizing material becomes closely knit, and the motion for sizing material provides enough back pressures and is fed forward；
(2) sizing material into softened zone first passes around the shear tension effect of gear block one, realizes after preliminarily softened through single head
Delivering into gear block two for screw thread delivery element, realizes further softening；
(3) in the large space that voltage drop element of the sizing material inside supercritical fluid injection region after softening is provided and supercritical fluid
Contact, it is fully swelling；
(4) enter and restore in area, swelling sizing material is subject to shearing splitting and stretching action in gear block three, reverse through double end
In the presence of screwing element one, the time of staying of sizing material is extended, and reaches the effect of preliminary recovery；The preliminary sizing material Jing for restoring
Cross double thread delivery element one, be again introduced into being carried out in gear block four and double end reverse-flight elements two supplementing shearing splitting and
Stretching, double thread delivery element two is transported to the sizing material for supplementing recovery in steep-lead thread element, carries out final recovery
Reaction, the sizing material Jing double threads delivery element three for restoring completely enters extrusion zone；
(5) in the Homogenizing Element of extrusion zone, Jing after the irregular flowing that notch is formed is sufficiently mixed, through double end Changeable Lead spiral shell
Texel part completes whole recovery and reacts from extrusion in machine host is restored.
9. the continuous recovery machine of a kind of scrap rubber according to claim 8, it is characterised in that supercritical fluid and scrap rubber
Mass ratio is 0.005～0.02, and the rotating speed of recovery machine twin-screw is 40～80r/min, the temperature in recovery machine twin-screw binder area
At 50～80 DEG C, the temperature control of softened zone supercritical fluid injection region and restores the temperature control in area at 90～110 DEG C for control
At 120～150 DEG C, the temperature of extrusion zone is at 60 DEG C～80 DEG C.
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| CN201710060473.4A CN106633176B (en) | 2017-01-25 | 2017-01-25 | Continuous recovery machine and recovery process for waste rubber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI714406B (en) * | 2018-12-27 | 2020-12-21 | 日商三菱日立電力系統股份有限公司 | Fluid delivery device and modification method of fluid delivery device |
| CN114907657A (en) * | 2022-05-31 | 2022-08-16 | 浙江南洋科技有限公司 | Reactive extrusion method biaxially oriented polyvinyl alcohol film and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030125401A1 (en) * | 2001-10-02 | 2003-07-03 | Costas Tzoganakis | Method of modifying crosslinked rubber |
| JP2006026949A (en) * | 2004-07-13 | 2006-02-02 | Japan Steel Works Ltd:The | Kneading extruder using supercritical fluid |
| US20110009509A1 (en) * | 2007-08-14 | 2011-01-13 | Dsm Ip Assets B.V. | Rubber de-vulcanisation |
| CN102250381A (en) * | 2011-07-22 | 2011-11-23 | 常州大学 | Twin-screw device and method for rubber desulfurization |
| CN106243380A (en) * | 2016-09-13 | 2016-12-21 | 安徽世界村新材料有限公司 | Supercritical CO2break sulfur regeneration equipment with microwave-assisted multistage twin-screw extrusion green |
-
2017
- 2017-01-25 CN CN201710060473.4A patent/CN106633176B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030125401A1 (en) * | 2001-10-02 | 2003-07-03 | Costas Tzoganakis | Method of modifying crosslinked rubber |
| JP2006026949A (en) * | 2004-07-13 | 2006-02-02 | Japan Steel Works Ltd:The | Kneading extruder using supercritical fluid |
| US20110009509A1 (en) * | 2007-08-14 | 2011-01-13 | Dsm Ip Assets B.V. | Rubber de-vulcanisation |
| CN102250381A (en) * | 2011-07-22 | 2011-11-23 | 常州大学 | Twin-screw device and method for rubber desulfurization |
| CN106243380A (en) * | 2016-09-13 | 2016-12-21 | 安徽世界村新材料有限公司 | Supercritical CO2break sulfur regeneration equipment with microwave-assisted multistage twin-screw extrusion green |
Non-Patent Citations (1)
| Title |
|---|
| 陈士宏等: "可进行超临界CO_2辅助挤出的双阶挤出机组的设计", 《塑料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI714406B (en) * | 2018-12-27 | 2020-12-21 | 日商三菱日立電力系統股份有限公司 | Fluid delivery device and modification method of fluid delivery device |
| CN114907657A (en) * | 2022-05-31 | 2022-08-16 | 浙江南洋科技有限公司 | Reactive extrusion method biaxially oriented polyvinyl alcohol film and preparation method thereof |
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| CN106633176B (en) | 2023-04-14 |
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