CN106426630A - Vacuum assisted method and equipment for preventing outflow of rubber by screw extrusion continuous dehydration drying - Google Patents
Vacuum assisted method and equipment for preventing outflow of rubber by screw extrusion continuous dehydration drying Download PDFInfo
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- CN106426630A CN106426630A CN201610863571.7A CN201610863571A CN106426630A CN 106426630 A CN106426630 A CN 106426630A CN 201610863571 A CN201610863571 A CN 201610863571A CN 106426630 A CN106426630 A CN 106426630A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 40
- 239000005060 rubber Substances 0.000 title claims abstract description 40
- 230000018044 dehydration Effects 0.000 title claims abstract description 22
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001125 extrusion Methods 0.000 title claims abstract description 12
- 238000001035 drying Methods 0.000 title abstract description 18
- 230000003405 preventing effect Effects 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims description 81
- 238000004513 sizing Methods 0.000 claims description 63
- 239000003292 glue Substances 0.000 claims description 23
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 9
- 238000006396 nitration reaction Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 229920003051 synthetic elastomer Polymers 0.000 description 4
- 239000005061 synthetic rubber Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
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- 210000003437 trachea Anatomy 0.000 description 1
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Classifications
-
- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a vacuum assisted method and equipment for preventing outflow of rubber by screw extrusion continuous dehydration drying for achieving the purpose of preventing rubber leakage in dehydration and exhausting by people using an outflow preventing exhaust device with a motor-controlled shaftless spiral device. Compared with a screw thread, the motor-controlled shaftless spiral device can generate higher downward thrust to rubber, so that the rubber slowly fills shaftless space and a spiral to reinforce the outflow preventing effect; water in the rubber escapes by being subjected to mechanical extrusion and two-time negative pressure; water escapes by two-time negative pressure, so that the rubber is dried more sufficiently; and a circuit control device does not need to be connected, so that the operation is convenient.
Description
Technical field
The invention belongs to synthetic rubber or wet method mixing of rubber post processing field, it is related to a kind of vacuum aided screw extruding and takes off
Water drying meanss and equipment.
Background technology
The drying of rubber is one of rubber production process important procedure, its total energy consumption and equipment investment,
Operating cost aspect occupies sizable proportion, and meanwhile, drying process also directly affects the color and luster of rubber product, fugitive constituent contains
The parameters such as amount, depolymerization and crosslinking degree.
Early 1940s, the U.S. has developed the production flow field of emulsion method butadiene-styrene rubber, employs vacuum in processing behind
Rotary drum suction strainer moisture pulverizes the drying process putting into drying baker then；The fifties, mechanical presses dewaterer instead of vacuum drum
Device, develops into extrusion dehydration-box-type drying technological process；The beginning of the sixties, the impressive progress that mechanical drying method takes, extruding is de-
Water-expansion drying unit is used widely because of its superior dehydration property；Thereafter, flourishing with Rubber Extruder industry,
Using extruder convection drying sizing material, because its process is simple, cost of equipment are little, the low advantage of energy resource consumption, greatly developed.
Nowadays, common rubber dryness device has vacuum drum, mechanical presses dewaterer, expansion-exsiccation machine, microwave, far infrared, drying
Case, screw extruder etc..Wherein, screw extruder extrusion dehydration drying equipment due to dehydrating effect good, production capacity is high, behaviour
Make expense and consuming little energy, equipment volume is little, easy to operate, easy to maintenance, is easy to automatization, and can be suitably used for multiple synthesis
The advantages of production of rubber or wet method mixing of rubber, it is widely used in the dehydrate flow field field of rubber；China is specially
Profit 201420350935.8 discloses a kind of vacuum press dewaterer, including frame, the extruding casing in frame, squeezing tank
Body includes vacuum accumulator device, is additionally provided with vacuum separation room between charging aperture and extruding casing, and described vacuum separation interior is provided with the
Two water filtering tubes, described vacuum accumulator device passes through pipeline and vacuum separation located at vacuum separation room side, the upper end of vacuum accumulator device
Room is connected, and the top of vacuum accumulator device is connected with vacuum pipe also by vacuum cavitations valve, and the lower section of vacuum accumulator device also sets
There is discharge outlet, discharge outlet is provided with drain valve, vacuum separation room and screw extruder are united two into one, greatlys save equipment
Manufacturing cost and installing space, improve the production efficiency of equipment, but must utilize vacuum accumulator device by vacuum cavitations valve
Moisture in slurry is drawn onto in vacuum accumulator device interior negative pressure；It is de- that Chinese patent 201120122077.8 discloses a kind of extruding
Water dispenser, the motor including base and being installed on base, gear reduction unit, loading hopper, charging dewatering period, adjustable pressuring template
With pelletizing case, feed dewatering period and be made up of tapered cylinder, straight machine barrel and the screw rod being arranged in two machine barrels, loading hopper bottom is successively
It is provided with dewatering screen and discharge casing.Conic tube is matched with conical screw, increases compression ratio, and dehydrating effect is good, complete machine structure
Novel compact, production efficiency is high, and single machine yield can improve about 20%, and energy consumption about saves 25%, and whole machine auto-control degree is high,
Reduce the labor intensity of workman, remarkable in economical benefits.This equipment improves the quality of dry products, and prepared finished particle is equal
Even, hydrogel is larger with hot blast contact surface, and rate of drying is high, and energy consumption is low, has good application value, based on extrusion reason
By a kind of screw extrusion dewaterer study mechanism one single screw rod screw extrusion dewaterer disclosed herein, dehydration by evaporation interval in
Screw diameter reduces suddenly, causes the very low spiro rod section of a pressure, to ensure that material will not be because pressure is excessive from aerofluxuss
Mouth overflow.CN2016205130309 discloses a kind of screw rod, and its spiral shell rib is equidistantly not wait deeply, and preferably, plastics plastify heat-transfer effect
Effect is preferable；201420425712.3 disclosing a kind of spiral axis of cone extruding-desiccation machine, its architectural feature is the sieve of box house
It is provided with the spiral axis of cone diameter of axle in net to be become larger by little, pitch, by tapering into greatly, screen cloth has hole, and casing left end is provided with charging
Case, in end seat, box bottom is provided with waste collection mouth to screw conic pedestal；Casing right-hand member is provided with feed box, on feed box equipped with
Discharging adjusting means drive system is connected with the spiral axis of cone, improves sludge dewatering efficiency, solves existing dewaterer mud and takes off
The uneven problem of water；201420373553.7 disclose a kind of injection machine anti-overflow stiffening device of dehumidifying, will by motion stops
Aerofluxuss hole plug, it is to avoid plastic material is projecting, colloidal sol and penetrating overflows the possibility of raw material from steam vent during moving back, in conjunction with band
Coordinate between screw rod thread in screw rod thread rotary shaft and dehumidifying barrel, when carrying screw rod thread rotary shaft to rotate or stopping,
This screw rod thread also can produce downward extruding force to the plastic material above gushing, and serves one to gushing on plastic material or overflowing
Fixed inhibitory action, prevents the possibility that plastic material overflows from steam vent by dual cooperation, controls raw material to overflow to reach
Effect.200920035866.0 disclose a kind of dual-screw-stem machine vacuum port anti-overflow exhaust apparatus, and it is in double that device includes bottom
Arc-shaped holding pad, is placed in above twin screw with the cooperation of twin screw section.This invention dual-screw-stem machine vacuum port anti-overflow aerofluxus
Device, installs holding pad additional in vacuum port, allows the gas in screw rod to discharge from the another side of vacuum port, solves material and emit
The problem going out, 201220543460.5 disclose a kind of parallel incorgruous multi-screw extruder of interior exhaust, are related to a kind of use extremely
The extrusion equipment of few two mutual non-engaging spiro rods, structure is employed solid phase compression exhaust and is entered with melt zone aerofluxuss simultaneously
OK, inner screw right-hand member has longer exhaust space, so exhaust effect is good.201420862496.9 disclosing one kind for double
Screw extruder vacuum exhaust anti-overflow exhaust apparatus, including exhaust seat, respectively has one to block up in each gas outlet in exhaust seat
Block, during use, during cylinder and spring drive sprue to move reciprocatingly, outwards emerges from air vent if there are material,
The material emerged will be done the sprue moving down and be pushed, and the screw channel that can be rotated takes away this partial material, protect
Exhibit material will not block steam vent all the time.200820118501.X disclosing a kind of extruder drawing-in device, a left side for drawing-in device
Right axle bearing and feeding roller are different from ordinary construction, and left and right bearing block part is completely embedded into the left and right sides of feeding roller lid respectively
In annular groove, have that matching property is good, registration, wear-resisting, corrosion-resistant, can prevent sizing material from entering bearing support, efficiently against
The leak adhesive problem of other pressure roller.201410285605.X disclosing a kind of other pressure roller drawing-in device of Rubber Extruder, on other pressure roller
End face ending width (i.e. opening size) of anti-glue screw thread is consistent with the groove width of anti-glue screw thread, and the thickness of spreading knife is more than instead
The groove width of glue screw thread, makes spreading knife play plugging action to notch it can be ensured that sizing material does not spill, and thoroughly solves extruder
The harmful effect to environment for the leak adhesive, is also prevented from the waste that leak adhesive causes, and meanwhile, improves extrusion mechanism quality.Documents
Belong to identical technical field with the technical program, wherein 201420373553.7 is immediate prior art, but utilizes spiral shell
Bar thread also can produce downward extruding force to the plastic material that above gushes, to gush on plastic material or overflow serve certain
Inhibitory action, but the anti-overflow shaftless screw device at an angle with axis with motor control of the present invention is not disclosed,
Technical scheme disclosed in above documents need to connect more complicated circuit control device, complex operation, and extruder aerofluxuss
Mouthful easily overflow, disclose using etc. deep displacement type screw rod, in compression section increasing compression ratio, so that temperature and pressure is also gradually risen
So that the moisture in sizing material is extruded, and using sizing material to during exhaust section because screw channel is deeper, the larger formation of pitch
Compared with low pressure, so that hydrone in rubber, air and the effusion of low molecular weight volatile thing, by steam vent vacuum pumping
Go out, thus realizing the technical scheme of the dehydrate of rubber, no anti-overflow exhaust apparatus, therefore in actual production and unreal
With.
Content of the invention
For solving above-mentioned technical problem, the invention provides a kind of rubber vacuum auxiliary threaded rod extruding continuous dehydration is dried and prevents
Overflow method and apparatus, with reach people can using the anti-overflow exhaust apparatus of the shaftless screw with motor control this
One technological means prevent the purpose of rubber leak adhesive when being dehydrated aerofluxuss, compare screw rod thread, shaftless screw device can make sizing material slow
Trickle charge completely no shaft space and spiral, enhance anti-overflow effect；And moisture overflows via mechanical presses and twice negative pressure in sizing material,
Moisture negative pressure is overflowed twice makes sizing material drying more abundant, and without connecting more complicated circuit control device, easy and simple to handle.
For reaching above-mentioned purpose, technical scheme is as follows：A kind of rubber vacuum auxiliary threaded rod extrudes continuous dehydration
Be dried anti-overflow equipment, its agent structure include machine head port mould, head chuck, spreader, nest, connector, one section of machine barrel,
One section of cooling jacket, bushing, vacuum extractor one, machine barrel two-stage nitration, cooling jacket two-stage nitration, screw rod, vacuum extractor two, machine barrel three
Section, three sections of cooling jacket, drawing-in device, reduction box, pedestal, support, head is by machine head port mould, head chuck, spreader, nesting
Body four part forms, and machine barrel is made up of one section of machine barrel, machine barrel two-stage nitration, three section of three part of machine barrel；Head passes through connector with machine barrel
Link together, connector is respectively adopted with head and barrel and is bolted and threadeds；Screw rod is divided into by its effect
Feeding section and compression section, first exhaust section, homogenizing zone, second exhaust section, the second homogenizing zone, vacuum extractor one and evacuation
Device two is separately mounted to the segmentation junction two-by-two of three sections of machine barrels, matches with first, second exhaust section of screw rod, and screw rod is right
End is installed bearing and is connected with the gear in reduction box by spline tooth wheel case, and machine barrel is connected with support, and support is fixed on base
On seat, motor, respectively with reduction box, be connected, described screw rod in addition to exhaust section be constant depth variable pitch screw, lead in initial feeding section
Journey tapers into screw rod the second homogenizing zone helical pitch, in exhaust section pitch with spiral shell deeply more than pitch and the spiral shell of homogenizing zone and feeding section
Deeply, described vacuum extractor one and vacuum extractor two have anti-overflow exhaust apparatus, and anti-overflow exhaust apparatus has by motor
The shaftless screw device controlling.
Using other pressure roller supplementary structure, including other pressure roller, other pressure roller becomes 30 ° with driving screw axis to described drawing-in device.
Described shaftless screw device is dextrorotation, is 84 ° with axis angle, and now sizing material spilling resistance is maximum and slowly overflows
Go out.
The direction of motion of the other pressure roller of described screw motion direction and other pressure roller supplementary structure is synchronous incorgruous；
Drawing-in device also includes keeping off glue ring, taper roll bearing, a set of cups, bearing (ball) cover, shaft coupling, CW type worm type of reduction gearing
And motor, taper roll bearing has two, and other pressure roller threading steps end face is passed through to keep off glue ring and coordinated with a taper roll bearing,
Another taper roll bearing coordinates in other pressure roller free end ladder end face, and outer face is coordinated with bearing (ball) cover, taper roller axle
Hold outer and a set of cups cooperation, bearing (ball) cover is connected with a set of cups hex screw, and other pressure roller free end passes through to connect shaft coupling and CW type
Worm type of reduction gearing is connected.
Described screw rod, in initial feeding section helical pitch 97.5mm, fades to 65mm, helical angle to screw rod the second homogenizing zone helical pitch
This constant interval be 12～20 °, the second homogenizing zone screw spiral angle be 17 ° 40 ', feeding section and homogenizing zone spiral shell depth 5mm, described
The exhaust section spiral shell depth 7.5mm of screw rod.
Described anti-overflow exhaust apparatus also includes aerofluxuss connector, exhaustor and deposits glue case, shaftless screw from inside to outside according to
Secondary be connected by bearing, pad and aerofluxuss connector, aerofluxuss connector, exhaustor and deposit glue case for integral type insertion tie
Structure, the free end of shaftless screw is connected with motor by shaft coupling, and exhaustor is located at below the free end of shaftless screw, and shaftless
Helicoidal section communicates.
The anti-overflow equipment of described dehydrate is extruder, and second order steam vent selected by extruder.
Described vacuum extractor one and vacuum extractor two also include the vacuum pump with motor, and described vacuum pump passes through to take out
Feed channel is connected with the glue case of depositing in anti-overflow exhaust apparatus.
The side of the direction of rotation in described screw rod for the described anti-overflow exhaust apparatus.
A kind of rubber vacuum auxiliary threaded rod extruding continuous dehydration is dried anti-overflow method, comprises the following steps：
A () opens motor, make to become 30 ° of other pressure roller and driving screw synchronously incorgruous rotation with driving screw axis, by sizing material to plus
The spout of the drawing-in device of material section feeds intake；
B sizing material is fed forward to compression section () driving screw, driving screw in compression section region by sizing material continued compression, moisture in it
Constantly extruded, discharged by the little osculum of extruder barrel bottom；
C () opens controlled motor and the vacuum pump of vacuum extractor, sizing material first passes through first exhaust section, the evacuation of motor control
Shaftless screw inside device rotates down, and prevents sizing material from emerging, sizing material simultaneously vacuum extractor vacuum pump etc. effect under, area
Domain pressure reduces further, forms sizing material negative pressuren zone, hydrone in glue, air and the effusion of low molecular weight volatile thing, via taking out
Vacuum equipment discharges machine barrel, and in outside condensation process, in sizing material, moisture overflows via mechanical presses and twice negative pressure, completes drying
Process；
D sizing material is fed forward to homogenizing zone () driving screw, complete the anti-overflow aerofluxuss work of step (c) through vacuum extractor
Sequence, reaches head outlet through the second homogenizing zone；
E the sizing material completing dried described in () passes through machine barrel die extrusion through spreader.
The customer service of the present invention deficiency of existing equipment, devises a set of defeated by conic double screw feeder, screw extruding
Send the synthetic rubber dehydrating drying device of the compositions such as device, spiral thrust system, vacuum extractor, drive system.This device leads to
Cross conical double-screw and complete feeding, realize the dehydrate of sizing material in the presence of screw extruding effect and vacuum extractor, should
Device one-step method completes the dehydrate of rubber, and dehydrate effect is good, process is continuous, high degree of automation, using having no
The anti-overflow exhaust apparatus of axle screw prevents rubber leak adhesive when being dehydrated aerofluxuss, has larger practical value.
Brief description
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 having required use in technology description is briefly described, but embodiments of the present invention do not limit so.
Fig. 1 is the rubber dehydrate anti-overflow equipment overall schematic disclosed in the embodiment of the present invention；
Fig. 2 is the rubber dehydrate anti-overflow equipment partial sectional view disclosed in the embodiment of the present invention；
Fig. 3 is the anti-overflow exhaust apparatus schematic diagram disclosed in the embodiment of the present invention；
Fig. 4 is the shaftless screw schematic device disclosed in the embodiment of the present invention；
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 describes.
As Fig. 1, shown in Fig. 2, Fig. 3, a kind of rubber vacuum auxiliary threaded rod extruding continuous dehydration is dried anti-overflow equipment, its master
Body structure includes machine head port mould 1, head chuck 2, spreader 3, nest 4, connector 5, one section 6 of machine barrel, one section of cooling jacket
7th, bushing 8, vacuum extractor 1, machine barrel two-stage nitration 10, cooling jacket two-stage nitration 11, screw rod 12, vacuum extractor 2 13, machine barrel three
Section 14, three section 15 of cooling jacket, drawing-in device 16, reduction box 17, pedestal 24, support 25, head is pressed from both sides by machine head port mould 1, head
Set 2, spreader 3, nest 4 four part composition, machine barrel is by one section 6 of machine barrel, machine barrel two-stage nitration 10, three section of 14 3 part group of machine barrel
Become；Head is linked together by connector 5 with machine barrel, connector 5 and head and barrel be respectively adopted be bolted and
Threaded；Screw rod is divided into feeding section 18 and compression section 19, first exhaust section 20, homogenizing zone 21, second exhaust by its effect
Section 22, the second homogenizing zone 23, vacuum extractor 1 and vacuum extractor 2 13 are separately mounted to the segmentation two-by-two of three sections of machine barrels even
Meet place, match with first, second exhaust section of screw rod, screw rod 12 right-hand member is installed bearing and passed through spline tooth wheel case and deceleration
Gear in case 17 connects, and machine barrel is connected with support 25, and support 25 is fixed on pedestal 24, motor 41,42 respectively with reduction box
40th, 17 connection, described screw rod 12 is constant depth variable pitch screw in addition to exhaust section 20,22, in initial feeding section 18 helical pitch to screw rod
Second homogenizing zone 23 helical pitch tapers into, and is deeply more than the pitch of homogenizing zone 21 and feeding section 18 in exhaust section 20,22 pitch and spiral shell
With spiral shell deeply, described vacuum extractor 1 and vacuum extractor 2 13 have anti-overflow exhaust apparatus 26, anti-overflow exhaust apparatus 26
There is the shaftless screw device 29 being controlled by motor 27.
Using other pressure roller supplementary structure, including other pressure roller 34, other pressure roller 34 is become described drawing-in device 16 with driving screw axis
30°.
As shown in figure 4, described shaftless screw device 29 is dextrorotation, it is 84 ° with axis angle, now sizing material overflows resistance
Overflow greatly and slowly.
The direction of motion of the other pressure roller 34 of described screw rod 12 direction of motion and other pressure roller supplementary structure is synchronous incorgruous, feeds
Material device 16 also includes keeping off glue ring 35, taper roll bearing 36, a set of cups 37, bearing (ball) cover 38, shaft coupling 39, CW type worm and gear
Decelerator 40 and motor 41, taper roll bearing 36 has two, and other pressure roller 34 threading steps end face passes through to keep off glue ring 34 and one
Taper roll bearing cooperation, another taper roll bearing and other pressure roller 34 free end ladder end face cooperation, outer face and bearing
End cap 37 coordinates, and taper roll bearing 35 is outer to be coordinated with a set of cups 36, and bearing (ball) cover 37 is connected with hex screw with a set of cups 36, other pressure
Roller 34 free end is passed through to connect shaft coupling 39 and is connected with CW type worm type of reduction gearing 40, CW type worm type of reduction gearing 40 with electric
Machine 41 connects.
Described screw rod 12, in initial feeding section 18 helical pitch 97.5mm, fades to 65mm to screw rod the second homogenizing zone 23 helical pitch,
Helical angle is 12～20 ° in this constant interval, and the second homogenizing zone 23 screw spiral angle is 17 ° 40 ', feeding section 18 and homogenizing zone
21st, 23 spiral shell depth 5mm, the exhaust section 20 of described screw rod 12,22 spiral shell depth 7.5mm.
As shown in figure 3, described anti-overflow exhaust apparatus 26 also includes aerofluxuss connector 31, exhaustor 32 and deposits glue case 33,
Shaftless screw 29 passes sequentially through bearing 30, pad and aerofluxuss connector 31 from inside to outside and is connected, aerofluxuss connector 31, aerofluxuss
Pipe 32 is integral type communicating structure with depositing glue case 33, and the free end of shaftless screw 29 is connected with motor 27 by shaft coupling 28, row
Trachea 32 is located at below the free end of shaftless screw 29, communicates with shaftless screw 29 spiral section.
The anti-overflow equipment of described dehydrate is extruder, and second order steam vent selected by extruder.
As shown in Fig. 2 described vacuum extractor 1 and vacuum extractor 2 13 also include the vacuum pump 43 with motor,
Described vacuum pump 43 is connected with the glue case 33 of depositing in anti-overflow exhaust apparatus 26 by pump-line.
The side of the direction of rotation in described screw rod 12 for the described anti-overflow exhaust apparatus 26.
A kind of rubber vacuum auxiliary threaded rod extruding continuous dehydration is dried anti-overflow method, comprises the following steps：
A () opens motor 41,42, make to become the synchronous incorgruous rotation with driving screw 12 of 30 ° of other pressure roller 34 with driving screw axis, by glue
Expect to feed intake to the spout of the drawing-in device 16 in feeding section 18；
B sizing material is fed forward to compression section 19 () driving screw 12, driving screw 12 in compression section region by sizing material continued compression, its
Interior moisture is constantly extruded, and is discharged by the little osculum of extruder barrel bottom；
C () opens controlled motor and the vacuum pump 43 of vacuum extractor 9,13, sizing material first passes through first exhaust section 20, motor control
The shaftless screw 29 of vacuum extractor 13 the inside rotate down, prevent sizing material from emerging, sizing material is simultaneously in vacuum extractor vacuum
Under the effect of pump 43 grade, areal pressure reduces further, forms sizing material negative pressuren zone, and hydrone in glue, air and low molecule are waved
Stimulating food escapes, and discharges machine barrel via vacuum extractor 9, and in outside condensation process, in sizing material, moisture is via mechanical presses and twice
Negative pressure is overflowed, and completes dried；
D sizing material is fed forward to homogenizing zone 21 () driving screw 12, complete the anti-overflow aerofluxuss of step c through vacuum extractor 2
Operation, reaches head outlet through the second homogenizing zone 23；
E the sizing material completing dried described in () is extruded by machine barrel mouth mould 1 through spreader 3.
The present invention is to provide a kind of synthetic rubber dehydrating drying device, as shown in Fig. 2 screw rod 12 right-hand member installs bearing simultaneously
And be connected with the gear in reduction box 17 by spline tooth wheel case, the other pressure roller of drawing-in device forms 30 DEG C of angle tapers with screw rod 12
Arrangement, machine barrel adopts segmentation structure, adopts and be bolted connection, adopt connector between machine barrel and head between three sections of machine barrels
5 connect, and adopt threaded, adopt and be bolted connection between connector and head between machine barrel and connector 5.As figure
Shown in 1, synthetic rubber adds via charge door, and under other pressure roller 34 auxiliary of drawing-in device 16, material feeding ability strengthens, and feed is stable；
In shearing, under stretching action, temperature and pressure gradually rises sizing material, in screw compression section region, sizing material by continued compression, in it
Moisture is constantly extruded, and is discharged by the little osculum of extruder barrel bottom, in compression section region, sizing material inner most
Moisture is discharged by compression；Then, successively twice through screw rod exhaust section, now, screw-rod structure screw channel is deep, and pitch is big for sizing material,
Screw channel cavity volume increases, reduced pressure, and simultaneously under the effect such as vacuum extractor vacuum pump, areal pressure reduces further,
Form sizing material negative pressuren zone, hydrone in glue, air and the effusion of low molecular weight volatile thing, discharge machine barrel via vacuum extractor,
In outside condensation process, in sizing material, moisture overflows via mechanical presses and twice negative pressure, completes dried；Complete dried
Sizing material extruded by machine barrel mouth mould 1 through spreader 3, obtain the rubber product meeting performance requirement.
The drawing-in device 16 of this extruder mainly adopts spiral drawing-in device, as shown in figure 1, feeding in drawing-in device 16
The axis of material roller is in approximately the same plane and angled with the axis of driving screw, preferably 30 °；Fig. 3 is the present invention
Other press-roller device disclosed in embodiment, because the rotation side of the direction of rotation of charging propellers 34 screw thread and driving screw 12 screw thread
To being on the contrary, so in the course of the work, driving screw 12 direction of motion is relative with the direction of motion of feed-screw 34, and
And screw rod is synchronously incorgruous that sizing material feeding ability can be made to greatly reinforce, such sizing material can act in the spiral thrust of feed roller 34
Automatically travel forward down, feed roller 34 is driven using single motor 41 alone, together complete feeding with driving screw 12, and using subtracting
Fast case 40 is slowed down；The feeding device 16 of this board mainly utilizes a worm reduction box 40, model CW type, this TV station
Reduction box floor space is little, and cost is relatively low, is suitable for feeding device, due to feed roller 34 stress less, so motor
Power selection, without too big, is preferably chosen 3kw power model, due to the axis of feeding roller 34 and the axis of driving screw 12
For 30 °, enough installing spaces can be provided for worm reduction box 40, can guarantee that the spiral thrust of feed roller 34 is being led again
The component of screw rod 12 axis direction is as big as possible, substantially increases the feeding ability of extruder, improves the board ability of board,
Thus being favorably improved the quality of extruded product, improve production efficiency, improve enterprise's competitiveness in the market.
For solving the problems, such as the overflow of extruder vent, to possibly exhaust ports design exist problem, to air vent
Structure is improved, and the size of designed air vent should be more wider than the width of stream, thereby may be ensured that extruder
The melt sizing material that air vent is not flowed is blocked, simultaneously, the width of extruder steam vent also not should too big it is therefore an objective to
In order to shorten the probability of the sizing material time of staying and sizing material expansion；When sizing material flows through the exhaust section of extruder, due to aerofluxuss segment body
Amassing increases suddenly, and pressure reduces, and causes the air molecule in flowing sizing material, hydrone and lower-molecular substance to escape, from aerofluxuss
Taken away by vacuum pump in hole；As shown in figure 3, vacuum extractor includes anti-overflow exhaust apparatus 26, in order to prevent sizing material from aerofluxuss
Emerge in hole, on steam vent, added with a shaftless screw device 29, the driving means of this exhaust apparatus can directly adopt part
One little torque motor 27, not be used in configuration reduction box, and the side of the direction of rotation in described screw rod for the exhaust apparatus 26, so that
Sizing material dumping is easy；The free end of shaftless screw 29 is connected with motor 27 by shaft coupling 28, and the vacuum pump 43 with motor leads to
Cross pump-line to be connected with the glue case 33 of depositing in anti-overflow exhaust apparatus 26, during operation, motor 27 drives shaftless screw 29, shaftless
Screw 29 rotates formed spiral thrust and stops sizing material melt overflow, because shaftless screw device 29 and sizing material contact surface
Long-pending less, it is possible to larger resistance is formed to lower section sizing material, even if having sizing material to emerge it is also possible in material storing box 33 from the side
The sizing material emerged is taken out；Meanwhile, vacuum pump 43 runs, and gas passes through exhaustor 32 row from shaftless screw 29 intermediate hollow section
Gas, vacuum extractor realizes the aerofluxuss of sizing material and anti-overflow function simultaneously；It should be noted that deposit glue case 33 in Fig. 3 should adopt
Drawer-type structure in prior art, to remove the sizing material emerged in time.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of rubber vacuum auxiliary threaded rod extruding continuous dehydration is dried anti-overflow equipment, and its agent structure includes machine head port mould
(1), head chuck (2), spreader (3), nest (4), connector (5), one section of machine barrel (6), one section of cooling jacket (7), lining
Set (8), vacuum extractor one (9), machine barrel two-stage nitration (10), cooling jacket two-stage nitration (11), screw rod (12), vacuum extractor two
(13), three sections of machine barrel (14), three sections of cooling jacket (15), drawing-in device (16), reduction box (17), pedestal (24), support (25),
Head is made up of machine head port mould (1), head chuck (2), spreader (3), nest (4) four part, and machine barrel is by one section of machine barrel
(6), machine barrel two-stage nitration (10), three section of (14) three part composition of machine barrel；Head is linked together by connector (5) with machine barrel, even
Junctor (5) is respectively adopted with head and barrel and is bolted and threadeds；Screw rod is divided into feeding section (18) by its effect
And compression section (19), first exhaust section (20), homogenizing zone (21), second exhaust section (22) second homogenizing zone (23), evacuation
Device one (9) and vacuum extractor two (13) are separately mounted to the segmentation junction two-by-two of three sections of machine barrels, first, with screw rod
Two exhaust sections match, and screw rod (12) right-hand member is installed bearing and connected with the gear in reduction box (17) by spline tooth wheel case
Connect, machine barrel is connected with support (25), support (25) is fixed on pedestal (24), motor (41), (42) respectively with reduction box (40),
(17) connect, described screw rod (12) is constant depth variable pitch screw in addition to exhaust section (20), (22), in initial feeding section (18) helical pitch
Taper into screw rod second homogenizing zone (23) helical pitch, exhaust section (20), (22) pitch and spiral shell be deeply more than homogenizing zone (21) and
The pitch of feeding section (18) and spiral shell deep it is characterised in that：Described vacuum extractor one (9) and vacuum extractor two (13) have anti-
Overflow exhaust apparatus (26), anti-overflow exhaust apparatus (26) has the shaftless screw device (29) being controlled by motor (27).
2. rubber vacuum auxiliary threaded rod as claimed in claim 1 extruding continuous dehydration anti-overflow equipment is dried it is characterised in that：
Using other pressure roller supplementary structure, including other pressure roller (34), other pressure roller (34) is become described drawing-in device (16) with driving screw axis
30°.
3. rubber vacuum auxiliary threaded rod as claimed in claim 1 extruding continuous dehydration anti-overflow equipment is dried it is characterised in that：
Described shaftless screw device (29) is dextrorotation, is 84 ° with axis angle.
4. rubber vacuum auxiliary threaded rod as claimed in claim 1 extruding continuous dehydration anti-overflow equipment is dried it is characterised in that：
The direction of motion of the other pressure roller (34) of described screw rod (12) direction of motion and other pressure roller supplementary structure is synchronous incorgruous.
5. rubber vacuum auxiliary threaded rod as claimed in claim 1 extruding continuous dehydration anti-overflow equipment is dried it is characterised in that：
Described screw rod (12), in initial feeding section (18) helical pitch 97.5mm, fades to 65mm, spiral shell to screw rod second homogenizing zone (23) helical pitch
Swing angle is 12～20 ° in this constant interval, and the second homogenizing zone (23) screw spiral angle is 17 ° 40 ', feeding section (18) and homogenizing zone
(21), (23) spiral shell depth 5mm, the exhaust section (20) of described screw rod (12), (22) spiral shell depth 7.5mm.
6. rubber vacuum auxiliary threaded rod as claimed in claim 1 extruding continuous dehydration anti-overflow equipment is dried it is characterised in that：
Described anti-overflow exhaust apparatus (26) also includes aerofluxuss connector (31), exhaustor (32) and deposits glue case (33), shaftless screw
(29) pass sequentially through bearing (30), pad and aerofluxuss connector (31) from inside to outside to be connected, aerofluxuss connector (31), aerofluxuss
Manage (32) and deposit glue case (33) for integral type communicating structure, the free end of shaftless screw (29) passes through shaft coupling (28) and motor
(27) it is connected, exhaustor (32) is located at below the free end of shaftless screw (29), communicates with shaftless screw (29) spiral section.
7. rubber vacuum auxiliary threaded rod as claimed in claim 1 extruding continuous dehydration anti-overflow equipment is dried it is characterised in that：
The anti-overflow equipment of described dehydrate is extruder, and second order steam vent selected by extruder.
8. rubber vacuum auxiliary threaded rod as claimed in claim 1 extruding continuous dehydration anti-overflow equipment is dried it is characterised in that：
Described vacuum extractor one (9) and vacuum extractor two (13) also include the vacuum pump (43) with motor, described vacuum pump
(43) it is connected with the glue case (33) of depositing in anti-overflow exhaust apparatus (26) by pump-line.
9. described rubber vacuum auxiliary threaded rod extruding continuous dehydration as arbitrary in claim 1-8 is dried anti-overflow equipment, and it is special
Levy and be：The side of the direction of rotation in described screw rod (12) for the described anti-overflow exhaust apparatus (26).
10. a kind of rubber vacuum auxiliary threaded rod extruding continuous dehydration is dried anti-overflow method, comprises the following steps：
A () opens motor (41), (42), make to become with driving screw axis 30 ° of other pressure roller (34) synchronous with driving screw (12) incorgruous
Rotate, sizing material is fed intake to the spout of the drawing-in device (16) in feeding section (18)；
B sizing material is fed forward to compression section (19) () driving screw (12), sizing material is continued by driving screw (12) in compression section region
Compression, in it, moisture is constantly extruded, and is discharged by the little osculum of extruder barrel bottom；
C () opens vacuum extractor (9), the controlled motor of (13) and vacuum pump (43), sizing material first passes through first exhaust section (20),
Shaftless screw (29) inside the vacuum extractor (13) of motor control rotates down, and prevents sizing material from emerging, sizing material is being taken out simultaneously
Under the effect such as vacuum equipment vacuum pump (43), areal pressure reduces further, forms sizing material negative pressuren zone, the hydrone in glue, sky
Gas and the effusion of low molecular weight volatile thing, discharge machine barrel, in outside condensation process, moisture warp in sizing material via vacuum extractor (9)
Overflowed by mechanical presses and twice negative pressure, complete dried；
D sizing material is fed forward to homogenizing zone (21) () driving screw (12), complete the anti-risk of step (c) through vacuum extractor 2
Material deairing step, reaches head outlet through the second homogenizing zone (23)；
E the sizing material completing dried described in () passes through machine barrel mouth mould (1) extrusion through spreader (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610863571.7A CN106426630B (en) | 2016-09-29 | 2016-09-29 | Method and equipment for preventing material overflow in continuous dehydration and drying process by vacuum auxiliary screw extrusion of rubber |
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| CN201610863571.7A CN106426630B (en) | 2016-09-29 | 2016-09-29 | Method and equipment for preventing material overflow in continuous dehydration and drying process by vacuum auxiliary screw extrusion of rubber |
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|---|---|
| CN106426630B (en) | 2021-04-30 |
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