CN206447977U - High speed centrifugation device for spinning - Google Patents
High speed centrifugation device for spinning Download PDFInfo
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- CN206447977U CN206447977U CN201621425389.5U CN201621425389U CN206447977U CN 206447977 U CN206447977 U CN 206447977U CN 201621425389 U CN201621425389 U CN 201621425389U CN 206447977 U CN206447977 U CN 206447977U
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- rotary body
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- linear stretch
- thermal insulation
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Abstract
The utility model is related to a kind of high speed centrifugation device for spinning, solves the problem of present spiral line drawing is present, the scheme used for：A kind of high speed centrifugation device for spinning, it is characterised in that also including linear stretch passage：If being arterial highway, it is uniformly and radially arranged on the rotary body, described linear stretch passage is corresponding together coordinates at least one spray-hole, the injection linear stretch passage of connection accommodating chamber and rotary body exterior space is formed, the length of the linear stretch passage is spray hole length 3 ~ 1000 times.Its effect：Add a melt or solution stretches link or process linearly, can make melt or solution jet before rotary body or centrifugation spray orifice is left, point-blank be stretched, its stretching ratio reaches tens of to hundreds times.The external diameter of fiber thread when can make melt or the solution leave spray orifice reaches a few micrometers grades, then enters back into free air, carries out spirally camber line and stretches.
Description
Technical field
The utility model is related to a kind of high speed centrifugation device for spinning, more particularly to a kind of spinning filametntary height of Nano grade
Fast centrifugal spinning device.
Background technology
The existing technology for carrying out spinning to high polymer material using physical method substantially has following several：1. melt-blown nonwoven
Cloth spinning technique, is common chemical fibre melt spinning process；2. electrostatic spinning process；3. Centrifugal Electrostatic spinning or centrifugation
Electrostatic spinning process；4. high speed centrifugation spinning technique.
Sub-micron can be spun in these processes to the technology of nano-scale fiber, only electrostatic spinning and high speed centrifugation
Spinning.Simply two methods are combined as centrifugation electrostatic spinning or Centrifugal Electrostatic spinning.Utilize statcoulomb electric field
Power makes the spun fiber of centrifugal spinning be distributed more in order；Or using centrifugal force it is higher to viscosity by woven material (liquation) from
Pull out or throw away in pore pipe, form fiber stream or jet, then carry out with statcoulomb electric field force stretching fiber stream or
Jet.
Related application on high speed centrifugation spining technology has：
Chinese Changchun applied chemistry study in 2007 is apllied, and entitled " melt and solution centrifugal spinning prepare non-woven
Swirl atomizer on the patent application of the device of thing " (Application No. 200710306660.2), the device is exposed, nozzle with
Contacting external air, during the jet projected from nozzle enters directly into free air environment, i.e., the jet projected from nozzle leaves
The effect of centrifugal force field, with entering spiral form in drawing process.
It is entitled that Donghua University in 2010 applies：" one kind prepares nanofiber mass production device " (Application No.
201010018296.1) patent application, shown in illustrating disclosed in the patent application document：Nozzle is the outer wall in storage vat
On, it is exposed, nozzle is contacted with extraneous free air, and the jet projected from tank skin hole enters directly into free air
In, or enter directly into the free air of electric field force, i.e., the jet projected from nozzle have left the effect of centrifugal force field,
With entering spiral form in drawing process.
It is entitled that 2011 Qingdao universities apply：A kind of " device for preparing nano fiber twisted structure " (Application No.
201110137417.9) the L-shaped nozzle on patent application, the device is directly exposed in free air environment, nozzle with
Extraneous free air contact, i.e., the jet that nozzle is projected is entered directly into free air environment, i.e., the jet projected from nozzle
The effect of centrifugal force field is have left, with entering spiral form in drawing process.
2013 Nian Zhong Ke Haotai new materials Co., Ltds combine the entitled of application with Beijing University of Chemical Technology：A kind of " differential
Shunting centrifugal spinning prepares the device of nanofiber " patent application of (Application No. 201310163308.3), on the device
Nozzle is contacted with extraneous free air, and the jet that its swirl atomizer is projected is entered directly into the environment of free air, i.e., from spray
The jet that mouth is projected have left the effect of centrifugal force field, with entering spiral form in drawing process.
It is entitled that E. I. Du Pont de Nemours and Co in 2008 applies：“Production of nanofibers by melt
Spinning " (Patent No. ZL200880120862.0) patent, the patented product is relatively foregoing several to apply for a patent production
For product, difference is：More sufficiently make use of rotating disk produce centrifugal force, similar to Institutes Of Technology Of Zhejiang needleless from
Heart spinning scheme (the 3rd phase in 2016,《Fabrics for industrial use》" centrifugation is spun：A kind of spinning side for efficiently preparing micro/nano-fibre
Method (two) ").Entitled " the horizontal disc rotating centrifugal spinning method " (application number of East China Normal University's application in 2010：
201010252151.8) patent application, disclose needleless centrifugal spinning.But melt or solution are in the plane of rotating disk
When forming film, there is friction with rotating disk plane, its resistance can offset part centrifugal power.Reunion after film thining because of molecule is made
With, (being referred to as finger-shaped in document) into a line can be shunk again, and the thinning effect of first cephacoria is balanced out, and thread is stretched
During, it can be influenceed by the frictional force of tangential gas flow shearing force and thread in rotating centrifugal disk plane, influence spinning is thin
Degree and the uniformity.
Guangdong Wei in 2014 keeps tie a kind of entitled " nested type spinning body " (application number of application：
201410698917.3) swirl atomizer in patent application, equipment is equally an exposure in free air, i.e., sprayed from mouth
Jet is entered directly into free air, is helically stretched to wire type.
A kind of entitled " centrifugal spiral device for spinning " (Shen of the dense Environmental Protection Technology Co., Ltd's application in Yantai in 2016
Number 201610224066.8) patent application that please, its swirl atomizer is equally an exposure in free air, from penetrating that nozzle sprays
Stream is entered directly into free air, is helically stretched to wire type.The jet projected from nozzle have left the work of centrifugal force field
With with entering spiral form in drawing process.
In summary, in centrifugal spinning or centrifugation electrostatic spinning technique, the jet sprayed from nozzle (or spray-hole),
It is the drawing process for entering directly into helix in free air, does not continue under the influence of centrifugal force point-blank over long distances
Ground is stretched, until fiber finer flow diameter is reached after micron order, enters back into the draw stage of helix in free air.Work as entrance
During into free air, helically the mode of line is stretched, the problem of existing：The jet sprayed from nozzle, directly contacts freely empty
Gas, the solidification degree of jet is made to the cold to be increased, and is influenceed the level of stretch of jet, is finally influenceed filametntary fineness, it is difficult to reach micro-
Meter level.It possible solution：The internal diameter of spray orifice is made small as much as possible, the filament come out from spray orifice is directly reached and connects
The fineness of nearly Nano grade.Yet with the limitation of blockage problem and the small-diameter sized limit of machining workpiece endoporus, energy
It has been dimension limit that spray orifice internal diameter enough is made into 150 microns.But 150 microns of fiber thread spiral in free air
1 micron of fiber is drawn into wire type, this has the track of the more physical parameter, especially fiber that are relatively difficult to control in itself
The disturbance for being highly susceptible to faint air stream causes the stretching time and path length of fiber to have very big randomness, so as to lead
The diameter of a fiber is caused to differ, plucked, and wider range of diameter, it is difficult to meet wanting for nanofiber
Ask.
The content of the invention
The purpose of this utility model is to solve the above mentioned problem of prior art presence and provide a kind of high speed centrifugation spinning
Device, sets up linear stretch passage, and the length of linear stretch passage is several times to tens times of spray-hole, is formed by spray-hole
Jet, linear stretch is carried out by linear stretch passage, and the filametntary diameter come out from linear stretch passage is already close to milli
Meter level not, subsequently into the draw stage of the helix in free air, can reach nanoscale requirement, and can make fiber
The distributed areas of the diameter value of silk are smaller, secondly, and the inner section size of linear stretch passage is the spray-hole inner section size
Several times to tens times, the purpose reached be the jet that is formed by spray-hole when linear stretch passage carries out linear stretch not
Contacted with the inwall of linear stretch passage, it is to avoid produce friction, in addition, coordinating heating dish, hot gas air inlet pipe, reduce free air
Influence to filament temperature, keeps melting temperature as far as possible, maximum possible spins nano level filament, and heating dish is set
The noise for being both greatly lowered and being produced during rotation disc spins with air is put, can prevent rotating disk from fixing unreliable caused rotating disk again
The consequence for flying away from generation occurs.
What above-mentioned technical purpose of the present utility model was mainly solved by the following technical programs：A kind of high speed centrifugation spinning
Device, including：
Rotating driving device；
Rotary body：Driven and rotated by the rotating driving device；
Accommodating chamber：Positioned at the centre of the rotary body, for accommodate spinning material (including raw material liquation/solution,
In order to for example, the liquation or solution being related to afternoon are all a kind of form of raw material)；
Material feeding part：Sprue coordinates with the accommodating chamber, for being fed into accommodating chamber；
Spray-hole：For several, the periphery of the accommodating chamber, the accommodating chamber and each described spray-hole are distributed in respectively
Connection, when rotary body rotates, sprays spinning；
Characterized in that, also including linear stretch passage：If being arterial highway, it is uniformly and radially arranged on the rotary body,
Described linear stretch passage is corresponding together coordinates at least one spray-hole, forms connection accommodating chamber and rotary body exterior space
Injection linear stretch passage, the length b of the linear stretch passage is 3~1000 times of the injection hole length a.
Set up linear stretch passage, the length of linear stretch passage is several times to tens times of spray-hole.Liquation passes through spray
Perforation formation jet, the linear stretch for the linear stretch passage that jet passes through long range, jet stretching ratio in rotating disk reaches
To decades of times to hundreds times, when jet projects the edge of rotary body, jet diameter has reached micron order, and jet leaves rotation
Firing rate during body can reach more than per second hundred meters.When jet is stretched in long range linear stretch passage, not by tangential introduction of air
The resistance of shearing force and radial direction, is not influenceed by the frictional resistance of capillary wall, and jet is big before rotary body is left
Injected to again in free air after stretching to multiplying power, continue stretching with carrying out spiral form, uniform diameter and energy can be spun out
Reach nano level filament.
It is to form the surface groove in rotary body on linear stretch passage, in conjunction with lid, makes linear stretch channel cover
Close, form linear stretch passage；The inside of the entity part of rotary body can also be arranged on.
Specifically, when rotary body rotates at a high speed, the air in linear stretch passage is great because high speed rotation is produced
Inertia force, makes the material for having quality in tunnel be thrown out of, therefore air is also thrown out of, due to liquation full of spray-hole (or
Referred to as spray orifice or nozzle needle hole), that is, the entrance of injection linear stretch passage has been blocked, has prevented air from entering straight line drawing by spray-hole
Passage is stretched, therefore, air is only thrown out of, it is impossible to entered, only there is air when just starting rotation, when the most of quilt of air
After throwing away, the interior environment of linear stretch passage reduces close to vacuum environment and even avoids air to by linear stretch passage
The influence (including the resistance and air of air take away the influence of temperature) of interior jet (filament).
When the angular speed of rotary body is sufficiently large, and during acceleration movement without angular acceleration and axial direction, penetrated from spray-hole
The liquation jet gone out enters linear stretch passage, and in linear stretch passage, liquation jet pulls into straight line by centrifugal force.Only exist
Spray in linear stretch passage, the stretching track of jet is only straight line.When jet is penetrated in the outlet of injection linear stretch passage
When going out, because of the effect of the tangential shearing force of air, jet just becomes the circular arc line (exit of injection linear stretch passage from straight line
Become the turning point of camber line from straight line for jet).
By solution-polymerized SBR experimental study, and set up the mathematical modeling for being suitable for engineer applied：It is external that jet projects rotation
Along when flow velocity or the formula of firing rate be：(in formula, v2It is that jet is projected
The speed of rotary body outer constantly, ω is the angular speed of rotary body, and r is the radius of rotary body, r0It is distance rotation at spray-hole
The radius at body center, v0Effluxvelocity when being jet outflow spray-hole at spray-hole).
In the prior art, basic condition is r=r0,v2=v0, be spray-hole project liquation jet enter directly into
Stretch the state of jet helix.
Then it is r in the technical program>>r0, v2>>v0Situation.The liquation jet that i.e. spray-hole is projected does not enter directly
Enter to the state that jet is stretched in free air, but in (r-r helix0) radially long range linear stretch lead to
After point-blank being stretched in road, with carrying out spiral form camber line stretching is entered back into free air.
The technical program is：The radical length (length of nozzle needle in other words) of spray-hole is shortened as much as possible, such as 2 millis
Rice or so.Meanwhile, increase the length (r-r of linear stretch passage as far as possible0).The liquation thread projected from spray-hole is not vertical
Enter in free air, but make its rotator shaped into centrifugal force field in, as far as possible using centrifugal force, straight line draw
Stretch in passage and linear stretch is carried out to liquation thread.Make centrifugal force to liquation thread along linear stretch passage constantly straight line
Stretching, it is necessary first to increase the length (increasing the diameter dimension of rotary body) of linear stretch passage as much as possible.Next to that to the greatest extent
Liquation thread is possibly reduced by the resistance and shearing force during linear stretch, does not have air during linear stretch
Frictional resistance between Radial resistant force, the air stream shearing force of circumferencial direction, liquation and linear stretch vias inner walls.Because comparing
For other physics modes easily realized, one kind of draw ratio as big as possible is obtained in distance as short as possible effectively
Method.
As further improving and supplementing to above-mentioned technical proposal, the utility model uses following technical measures：It is described
The inner section size of linear stretch passage is 3-20000 times of the spray-hole inner section size.The purpose of this set is
Prevent interior contact of the liquation jet with linear stretch passage in linear stretch passage, it is to avoid occur because of the friction that contact is produced
Power, it is to avoid the frictional force of generation weakens the effect of centrifugal force, makes liquation jet be stretched as far as possible.
In order to make full use of centrifugal force to carry out linear stretch, the center line of the linear stretch passage to liquation jet
It is vertically arranged with the rotation axis of the rotary body.
The rotary body includes container, the rotating disk being fixed together with container；The inner chamber of the container is described
Accommodating chamber, the spray-hole is arranged on the chamber wall, and the rotating driving device drives the container to rotate, the container
Using its axis as pivot center.In the technical program, the first scheme：Container is Split type structure with rotating disk, passes through connection
Part forms detachable fixation；Second scheme：Container is structure as a whole with rotating disk.Because the size of rotating disk is larger,
Process for convenience, the first scheme is preferred version.Container can be the container of the corrosion-and high-temp-resistants such as crucible.Due to straight line
The inner section size of drawing passageway is larger, be spray-hole inner section size several times to tens times, in order to improve spinning efficiency, together
Linear stretch passage can also coordinate multiple spray-holes with unification spray-hole, and one of linear stretch passage coordinates multiple
During spray-hole, spray-hole can be that vertical one or more columns per page sets or laterally set up and down.Each spray-hole is ejected
The jet come is mutually non-interference, and each jet is each independent by linear stretch under the action of the centrifugal force.
The two sides of the rotating disk sets the first heating and thermal insulation disk and the second heating and thermal insulation disk respectively, and first heating is protected
Winchester disk and the second heating and thermal insulation disk is even there is gap between the rotating disk, the first heating and thermal insulation disk and the second heating are protected
The even outer with the rotating disk in outer of Winchester disk is adapted.
For the melt spinning of prior art, the temperature in free air, which needs to maintain jet, can continue drawing
The state stretched, is to have certain difficulty.Wherein most rambunctious is the environment temperature on jet periphery and the air flow method on periphery.
And the technical program is entered by the way of the first heating and thermal insulation disk and the second heating and thermal insulation disk to jet drawing passageway
Row temperature control, can heat to freeze, and temperature control is simple and easy to apply, and it is in solution status that can keep jet.
Certainly, if it is simple in terms of the temperature control for, the first heating and thermal insulation disk or the second heating and thermal insulation disk are only set
It is feasible scheme.When being relatively large in diameter for rotating centrifugal disk, when rotating speed is higher, it may appear that safety and noise problem.In order to reduce
Rotating disk upper and lower surface is contacted with space, and huge noise is produced during rotation, also for security is improved, using the first heating and thermal insulation
Disk and the second heating and thermal insulation disk, such scheme are preferred plan.
Noise problem is to use to heat rotary body and non-rotary first heating and thermal insulation disk and second in the technical program
Hot plate constitutes the frame mode of " sandwich " to solve.According to being：The surface area of rotary body is exposed to certainly as small as possible
In air, while under conditions of not interfering, reducing the gap between rotary body and meront as far as possible, so as to reduce
The noise that gas-flow resistance is produced.Simultaneously from noise small motor as far as possible.
After first, second heating and thermal insulation disk is heated, first, second heating and thermal insulation of rotary body and static not rotary body
Air is influenceed by high temperature in gap between disk so that the atmospheric density in gap is very low, air drag very little.And rotary body side
The side elevation height and very little on edge so that lateral area is small, although the linear velocity of side is maximum, the contact surface with free air
Product is small, so the noise decibel number that vapour lock is produced can effectively be inhibited.
In order that there is boss at the center of rotary body in the axial direction, and it is quiet boss is embedded into as far as possible
The central recess in first, second heating and thermal insulation disk only.The position that this convex-concave is inlayed has above and below axial direction
Arrangement.During rotary body rotates at a high speed, even if drive shaft occurs surprisingly, rotary body can also be pressed from both sides by static not rotary body
Firmly.Certainly, when rotary body departs from the limitation of drive shaft, using other equivalents, for limiting rotary body, rotary body is made to begin
Be maintained at eventually in the region that first, second heating and thermal insulation disk folder is held, prevent outwards fly (including fly out upwards, fly out downwards or to
Other directions fly out) harm that goes out and bring.
High temperature solution state is in order to what the jet for further enabling injection rotary body continued, and to a certain degree
Set respectively on the lateral wall of the upper stretching jet for continuing near linear, the first heating and thermal insulation disk and the second heating and thermal insulation disk
Gas blow pipe, the gas blow pipe is set close to the rotating disk, and is looped around the first heating and thermal insulation disk and the second heating and thermal insulation
On the lateral wall of disk, some gas holes are set, the air-flow of blowout is towards the radial direction side of the rotating disk on the tube wall of the gas blow pipe
To outside.
Vertical wraparound multiple tracks gas blow pipe can be distinguished on blowing effect, first, second heating and thermal insulation disk in order to increase, is blown
The direction that hole is blown is consistent, is all perpendicular to the direction of rotary body rotation axis, and outwardly.
Temperature is high when being heated due to the first heating and thermal insulation disk and the second heating and thermal insulation disk, in order to improve security, prevents from scalding
The fortuitous events such as wound occur, on the first heating and thermal insulation disk and the second heating and thermal insulation disk on the face away from the rotating disk respectively
Thermal insulating disc is set.The setting of thermal insulating disc also advantageously improves energy utilization rate, prevents the first heating and thermal insulation disk and second from heating guarantor
Winchester disk is dispersed into air, is also beneficial to improve the environment of equipment working state, is reduced thermal pollution.
With unification air inlet pipe in the accommodating chamber, the air inlet pipe connects hot gas feedway, and the air inlet pipe is to described
Accommodating chamber provides hot gas.Because accommodating chamber is connected with the air on equipment periphery, there is heat in the liquation in accommodating chamber with air
Transmission, during rotary body injection linear stretch, liquation is difficult to maintain to melt molten state, influence injection linear stretch effect, therefore sets
Air inlet pipe, the hot gas of sufficiently high temperature is improved to accommodating chamber, improves the effect that rotary body sprays linear stretch.
In order to reduce influence of the air-flow of air inlet pipe to liquation motion state, the gas outlet of the air inlet pipe holds close to described
Chamber of receiving is centrally disposed, and the gas outlet is several, and circle distribution is in the pipe end of the air inlet pipe respectively.The direction of gas outlet is suitable
The liquation direction of motion is answered, the mobility of liquid is improved, is conducive to melt to enter spray-hole.
In order that air inlet pipe and filling tube are located at container center position as far as possible, the material feeding part is filling tube, with institute
State the adjacent setting of air inlet pipe；Or the filling tube is enclosed on the periphery of the air inlet pipe, is formed and be nested.
The utility model has the advantage that：
1st, add a melt or solution stretches link or process linearly.Melt or solution can be made
Jet is point-blank stretched, its stretching ratio reaches tens of to hundreds times before rotary body or centrifugation spray orifice is left.
The external diameter of fiber thread when can make melt or the solution leave spray orifice reaches a few micrometers grades, then enters back into free air
In, carry out spirally camber line and stretch.
2nd, first, second heating dish is set up, after the diameter increase for solving rotary body, the noise produced when high speed rotates
And safety problem.
3rd, first, second heating dish is set up, melt is persistently maintained near melting temperature, is conducive to continued rectilinear to draw
Stretch.
4th, the setting of the gas hole of rotary body outer circumferential position, for blowing hot gas, makes the melt needed during melt spinning exist
Temperature when continuing to stretch in air, maintains near the melting temperature by woven material, is conducive to continued extension as much as possible.
5th, the inner section size of linear stretch passage is several times to tens times of the spray-hole inner section size, is reached
Purpose is inwall of the jet formed by spray-hole when linear stretch passage carries out linear stretch not with linear stretch passage
Contact, it is to avoid produce friction, it is to avoid frictional force hinders the linear stretch of fiber.
6th, a linear stretch passage is with unification spray orifice or nozzle needle hole, the liquid that each spray orifice or nozzle needle hole is ejected
Flow mutually non-interference, the various states for maintaining linear stretch, and linear stretch parallel to each other.
Brief description of the drawings
Fig. 1 is a kind of half-sectional structural representation of the present utility model.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：As shown in figure 1, a kind of high speed centrifugation device for spinning, including：
Rotating driving device, in Fig. 1, label 2 are the power-transmitting part of drive device；
Rotary body：Driven and rotated by the rotating driving device；
Accommodating chamber：Positioned at the centre of the rotary body, for accommodate spinning material (including raw material liquation/solution,
In order to for example, the liquation or solution being related to afternoon are all a kind of form of raw material) 18；
Material feeding part：Sprue coordinates with the accommodating chamber, for being fed into accommodating chamber；
Spray-hole：For several, the periphery of the accommodating chamber, the accommodating chamber and each described spray-hole are distributed in respectively
Connection, when rotary body rotates, sprays spinning；
Characterized in that, also including linear stretch passage：If being arterial highway, it is uniformly and radially arranged on the rotary body,
Described linear stretch passage is corresponding together coordinates at least one spray-hole, forms connection accommodating chamber and rotary body exterior space
Injection linear stretch passage, the length b of the linear stretch passage is 3~100 times of the injection hole length a.
Set up linear stretch passage, the length of linear stretch passage is several times to tens times of spray-hole.Liquation passes through spray
Perforation formation jet, the linear stretch for the linear stretch passage that jet passes through long range, jet stretching ratio in rotating disk reaches
To decades of times to hundreds times, when jet projects the edge of rotary body, jet diameter has reached micron order, and jet leaves rotation
Firing rate during body can reach more than per second hundred meters.When jet is stretched in long range linear stretch passage, not by tangential introduction of air
The resistance of shearing force and radial direction, is not influenceed by the frictional resistance of capillary wall, and jet is big before rotary body is left
Injected to again in free air after stretching to multiplying power, continue stretching with carrying out spiral form, uniform diameter and energy can be spun out
Reach nano level filament.
Specifically, when rotary body rotates at a high speed, the air in linear stretch passage is great because high speed rotation is produced
Inertia force, makes the material for having quality in tunnel be thrown out of, therefore air is also thrown out of, due to liquation full of spray-hole (or
Referred to as spray orifice or nozzle needle hole), that is, the entrance of injection linear stretch passage has been blocked, has prevented air from entering straight line drawing by spray-hole
Passage is stretched, therefore, air is only thrown out of, it is impossible to entered, only there is air when just starting rotation, when the most of quilt of air
After throwing away, the interior environment of linear stretch passage reduces close to vacuum environment and even avoids air to by linear stretch passage
The influence (including the resistance and air of air take away the influence of temperature) of interior jet (filament).
When the angular speed of rotary body is sufficiently large, and during acceleration movement without angular acceleration and axial direction, penetrated from spray-hole
The liquation jet gone out enters linear stretch passage, and in linear stretch passage, liquation jet pulls into straight line by centrifugal force.Only exist
Spray in linear stretch passage, the stretching track of jet is only straight line.When jet is penetrated in the outlet of injection linear stretch passage
When going out, because of the effect of the tangential shearing force of air, jet just becomes the circular arc line (exit of injection linear stretch passage from straight line
Become the turning point of camber line from straight line for jet).
By solution-polymerized SBR experimental study, and set up the mathematical modeling for being suitable for engineer applied：It is external that jet projects rotation
Along when flow velocity or the formula of firing rate be：(in formula, v2It is that jet is projected
The speed of rotary body outer constantly, ω is the angular speed of rotary body, and r is the radius of rotary body, r0It is distance rotation at spray-hole
The radius at body center, v0Effluxvelocity when being jet outflow spray-hole at spray-hole).
In the prior art, basic condition is r=r0,v2=v0, be spray-hole project liquation jet enter directly into
Stretch the state of jet helix.
Then it is r in the technical program>>r0, v2>>v0Situation.The liquation jet that i.e. spray-hole is projected does not enter directly
Enter to the state that jet is stretched in free air, but in (r-r helix0) radially long range linear stretch lead to
After point-blank being stretched in road, with carrying out spiral form camber line stretching is entered back into free air.
The technical program is：The radical length (length of nozzle needle in other words) of spray-hole is shortened as much as possible, such as 2 millis
Rice or so.Meanwhile, increase the length (r-r of linear stretch passage as far as possible0).The liquation thread projected from spray-hole is not vertical
Enter in free air, but make its rotator shaped into centrifugal force field in, as far as possible using centrifugal force, straight line draw
Stretch in passage and linear stretch is carried out to liquation thread.Make centrifugal force to liquation thread along linear stretch passage constantly straight line
Stretching, it is necessary first to increase the length (increasing the diameter dimension of rotary body) of linear stretch passage as much as possible.Next to that to the greatest extent
Liquation thread is possibly reduced by the resistance and shearing force during linear stretch, does not have air during linear stretch
Frictional resistance between Radial resistant force, the air stream shearing force of circumferencial direction, liquation and linear stretch vias inner walls.Because comparing
For other physics modes easily realized, one kind of draw ratio as big as possible is obtained in distance as short as possible effectively
Method.
As further improving and supplementing to above-mentioned technical proposal, the utility model uses following technical measures：It is described
The inner section size of linear stretch passage is 3-2000 times of the spray-hole inner section size.The purpose of this set is to prevent
Only interior contact of the liquation jet in linear stretch passage with linear stretch passage, it is to avoid occur because of the friction that contact is produced
Power, it is to avoid the frictional force of generation weakens the effect of centrifugal force, makes liquation jet be stretched as far as possible.
In order to make full use of centrifugal force to carry out linear stretch, the center line of the linear stretch passage to liquation jet
It is vertically arranged with the rotation axis of the rotary body.
The rotary body is including container 1, the rotating disk 3 being fixed together with container, and the inner chamber of the container is institute
Accommodating chamber is stated, the spray-hole is arranged on the chamber wall, the rotating driving device drives the container to rotate, it is described to hold
Device is using its axis as pivot center.In the technical program, the first scheme：Container is Split type structure with rotating disk, by even
Fitting forms detachable fixation；Second scheme：Container is structure as a whole with rotating disk.Due to rotating disk size compared with
Greatly, process for convenience, the first scheme is preferred version.Container can be the container of the corrosion-and high-temp-resistants such as crucible.Due to
The inner section size of linear stretch passage is larger, be spray-hole inner section size several times to tens times, in order to improve spinning efficiency,
One of linear stretch passage can also coordinate multiple spray-holes with unification spray-hole, and one of linear stretch passage coordinates
During multiple spray-holes, spray-hole can be that vertical one or more columns per page sets or laterally set up and down.Each spray-hole spray
The jet shot out is mutually non-interference, and each jet is each independent by linear stretch under the action of the centrifugal force.
First heating and thermal insulation disk and the second heating and thermal insulation disk, described first are set respectively above and below the rotating disk
Heating and thermal insulation disk and the second heating and thermal insulation disk is even there is gap, the first heating and thermal insulation disk and second between the rotating disk
The even outer with the rotating disk in outer of heating and thermal insulation disk is adapted.
For the melt spinning of prior art, the temperature in free air, which needs to maintain jet, can continue drawing
The state stretched, is to have certain difficulty.Wherein most rambunctious is the environment temperature on jet periphery and the air flow method on periphery.
And the technical program by the way of the first heating and thermal insulation disk 6 and the second heating and thermal insulation disk 13 to jet drawing passageway
Temperature control is carried out, can heat to freeze, and temperature control is simple and easy to apply, it is in solution status that can keep jet.
Certainly, if it is simple in terms of the temperature control for, the first heating and thermal insulation disk or the second heating and thermal insulation disk are only set
It is feasible scheme.When being relatively large in diameter for rotating centrifugal disk, when rotating speed is higher, it may appear that safety and noise problem.In order to reduce
Rotating disk upper and lower surface is contacted with space, and huge noise is produced during rotation, also for security is improved, using the first heating and thermal insulation
Disk and the second heating and thermal insulation disk, such scheme are preferred plan.
Noise problem is to use to heat rotary body and non-rotary first heating and thermal insulation disk and second in the technical program
Hot plate constitutes the frame mode of " sandwich " to solve.According to being：The surface area of rotary body is exposed to certainly as small as possible
In air, while under conditions of not interfering, reducing the gap between rotary body and meront as far as possible, so as to reduce
The noise that gas-flow resistance is produced.Simultaneously from noise small motor as far as possible.
After first, second heating and thermal insulation disk is heated, first, second heating and thermal insulation of rotary body and static not rotary body
Air is influenceed by high temperature in gap between disk so that the atmospheric density in gap is very low, air drag very little.And rotary body side
The side elevation height and very little on edge so that lateral area is small, although the linear velocity of side is maximum, the contact surface with free air
Product is small, so the noise decibel number that vapour lock is produced can effectively be inhibited.
In order that there is boss 20 at the center of rotary body in the axial direction, and boss is set to be embedded into as far as possible
Central recess 19 in first, second static heating and thermal insulation disk.The position that this convex-concave is inlayed is above and below axial direction
There is arrangement.During rotary body rotates at a high speed, even if drive shaft occurs surprisingly, rotary body can also not rotated by static
Body is clamped.Certainly, when rotary body departs from the limitation of drive shaft, using other equivalents, for limiting rotary body, rotation is made
Body is remained in the region that first, second heating and thermal insulation disk folder is held, and prevents from outwards flying (including to fly out, fly out downwards upwards
Or flown out to other directions) harm that goes out and bring.
High temperature solution state is in order to what the jet for further enabling injection rotary body continued, and to a certain degree
Set respectively on the lateral wall of the upper stretching jet for continuing near linear, the first heating and thermal insulation disk and the second heating and thermal insulation disk
Gas blow pipe 8,12, the gas blow pipe is set close to the rotating disk, and is looped around the first heating and thermal insulation disk and the second heating
On the lateral wall of hot plate, some gas holes 7,11 are set, the air-flow of blowout is towards the rotating disk on the tube wall of the gas blow pipe
Radial direction it is outside.
Vertical wraparound multiple tracks gas blow pipe can be distinguished on blowing effect, first, second heating and thermal insulation disk in order to increase, is blown
The direction that hole is blown is consistent, is all perpendicular to the direction of rotary body rotation axis, and outwardly.
Temperature is high when being heated due to the first heating and thermal insulation disk and the second heating and thermal insulation disk, in order to improve security, prevents from scalding
The fortuitous events such as wound occur, on the first heating and thermal insulation disk and the second heating and thermal insulation disk on the face away from the rotating disk respectively
Thermal insulating disc 5,14 is set.The setting of thermal insulating disc also advantageously improves energy utilization rate, prevents the first heating and thermal insulation disk and second from adding
Hot hot plate is dispersed into air, is also beneficial to improve the environment of equipment working state, is reduced thermal pollution.
With unification air inlet pipe 16 in the accommodating chamber, the air inlet pipe connects hot gas feedway, and the air inlet pipe is to institute
State accommodating chamber and hot gas is provided.Because accommodating chamber is connected with the air on equipment periphery, the liquation in accommodating chamber exists with air
Heat transfer, during rotary body injection linear stretch, liquation is difficult to maintain to melt molten state, influence injection linear stretch effect, therefore sets
Air inlet pipe is put, the hot gas of sufficiently high temperature is improved to accommodating chamber, the effect that rotary body sprays linear stretch is improved.
In order to reduce influence of the air-flow of air inlet pipe to liquation motion state, the gas outlet 17 of the air inlet pipe is close to described
Accommodating chamber is centrally disposed, and the gas outlet is several, and circle distribution is in the pipe end of the air inlet pipe respectively.The direction of gas outlet
The liquation direction of motion is complied with, the mobility of liquid is improved, is conducive to melt to enter spray-hole.
In order that air inlet pipe 16 and filling tube 15 are located at container center position as far as possible, the material feeding part is filling tube,
With the adjacent setting of the air inlet pipe；Or the filling tube is enclosed on the periphery of the air inlet pipe, is formed and be nested.
Concrete example illustrates：
First citing：3 a diameter of 0.4 meters of rotary body, container 1 (in concrete example explanation all by taking crucible as an example) diameter
0.08 meter, be 0.16 meter with the linear stretch passage length of centrifugal force tension jet.The radius size of rotary body 3 is crucible internal walls
On spray-hole 4 (spray orifice or nozzle needle hole) apart from 5 times of the size of pivot.
Rotary speed design load 10000rpm.Rotary body (disregarding motor drive shaft) weight 23.5kg.Normal temperature following rotator
Gap between static non-rotary heating dish up and down is 3 to 4 millimeters, and when being heated to 200 DEG C, gap is 2 to 2.5 millimeters.
During actual motion, highest 8000rpm, the noise level under normal temperature in 8000rpm is 87 decibels.When high temperature, during 8000rpm
Noise only has 82 decibels.
Second citing：The diameter of rotary body 3 is 0.6 meter, and the diameter of container 1 (such as crucible) is 0.1 meter, rotary body
Radius size be the spray-hole 4 (including spray orifice or nozzle needle hole) on crucible internal walls apart from 6 times of the size of pivot.
When the temperature of rotary body 3 is at 250 DEG C, in the state of 8000rpm, noise is 85 decibels.
The driving of rotary body 3 is directly driven using variable frequency induction motor.The output shaft of induction conductivity must be lengthened,
Enough length is reserved between the end cap of induction conductivity output shaft and the bottom end face of rotary body 3, the axial length that this is available
Section is placed in the air of refrigeration, and the limit temperature of cold air is at 25 DEG C, when the temperature increases, improves the flow velocity of cold air.Instantly
The temperature of heating disk 6 is increased to 360 DEG C, continues after 2 hours, the temperature of induction conductivity shell maintains less than 50 DEG C.
0.5 millimeter of the diameter of spray-hole 4 on crucible internal walls, the spray orifice of 2.5 millimeters of crucible wall thickness, i.e. 0.5 millimeter of internal diameter
The radical length in footpath is 2.5 millimeters, and the length of linear stretch passage is 64 times of spray orifice length.Linear stretch passage inner section is accumulated
It is 36 times of spray orifice inner circle sectional area.Each linear stretch passage 2 orifice numbers of correspondence are two, are arranged symmetrically.
Linear stretch channel cross-section is rectangle, but is not limited to rectangle, and other shapes are also applicable.Rotary body 3 and rotation
The same diameter of disk cover 10, rotary body 3 coordinates with rotation disk cover 10 makes linear stretch passage circumferential closure.
The technical program is applied to solution centrifugal and spins PAN：
Using powdered polypropylene nitrile PAN, molecular weight 150,000, solvent is dimethylformamide DMF.Mass fraction concentration wt
8% to 14%.Cork sealing normal temperature mechanical agitation 24 hours.
During spinning, the air-flow at crucible center is not added with, air inlet pipe and feed pipe are extracted out, the middle vacancy reserved from air inlet pipe,
Every 5 milliliters of 5 minutes solubilization liquid.Start charging when rotary speed stabilization is in 6000rpm.Fiber receives 20 centimetres of distance, receives
The substrate of fiber is common hospital gauze, or the polypropylene non-woven fabric that grammes per square metre is 20 grams every square metre.Spinning half an hour, obtain
The nanofiber arrived weighs 2.2 grams, and fibre diameter is than more uniform.
Demonstrated from actual result of the test, during carrying out centrifugal spinning using the technical program, fiber thread
Stretching is primarily not that three-dimensional whip moves stretching in atmosphere by fiber thread, but is stretched mainly by the radial alignment on rotary body logical
Road carries out centrfugal stretching.The randomness of physical parameter in this centrifugal force field is smaller than the randomness in free air
A lot.
When concentration is reduced to wt8%, the diameter of fiber becomes big, with the fibre diameter reported both at home and abroad with the reduction of concentration
And increased conclusion is similar.The one kind of this phenomenon in the utility model is explained：Solution concentration reduces, in identical spray orifice
The volume flow increase of the solution in footpath, fiber stream flow increases in the case where flow velocity is constant, is exactly that the diameter of fiber can increase.
Although concentration is reduced, it is less than compared to influence of the concentration to the diameter of the fiber after volatilization because concentration reduction increases flow
Plus influence.
Because the number of times of experiment is limited, it is difficult to draw one clearly on the fibre diameter and solution in the utility model
The definite conclusion of the relation of concentration.
In test, the change of solution concentration has only been made, 0.5 millimeter of rotary speed and spray orifice internal diameter do not change.Especially
It is that the internal diameter of spray orifice 4 on sidewall of crucible is the circular crucible in 80 millimeters of diameter with the spiral bit of 0.5 millimeter of normal dia
Come outbreak out in external arc, this has been the minimum diameter of this processing mode.
The technical program is applied to solution centrifugal and spins PVDF.
Kynoar PVDF, solvent is still dimethylformamide DMF.Mass fraction concentration wt 8% to 10%.It is soft
Mechanical agitation 24 hours in the case of 60 degrees Celsius of plug sealing.
During spinning, the air-flow at crucible center is not added with, air inlet pipe and feed pipe are extracted out, the middle vacancy reserved from air inlet pipe,
Feed 5 milliliters within every 5 minutes.Start to feed in 7000rpm when rotary speed is stable.Fiber receives 20 centimetres of distance, receives fiber
Substrate be common hospital gauze.0.5 millimeter of the diameter in the hole on crucible internal walls, 2.5 millimeters of crucible wall thickness, i.e. internal diameter 0.5
The aperture length of millimeter is 2.5 millimeters.Why rotating speed is increased into 7000rpm, be because same concentrations under the conditions of, PVDF its
Viscosity ratio PAN's will height.
Although the diameter of PVDF fibers diminishes, the smooth degree and uniformity of fiber surface are not as good as PAN materials.
In experiment of the present utility model, illustrate good spinnability of the PAN solutions than PVDF solution, this conclusion and solution electrostatic spinning
Conclusion it is identical.
The technical program is applied to the melt spinning of high polymer：
Melt spinning is although only many technological parameters：Temperature.But it is difficult accurately to control and measure that temperature, which is,
The temperature of material in the temperature of the centrifugal pan of rotation at a high speed, crucible is especially measured, the temperature in the tunnel of jet is stretched, and penetrate
Flow the temperature of air run into after being projected from tunnel face, in other words jet in atmosphere helix drawing process temperature, this
Really one more complicated temperature field.
Melt spun spinning material：Polypropylene, particulate material, melt value 25g/10min (230 DEG C of test condition, 2.16kg, with
Similarly hereinafter) to 1500g/10min.
The method for testing rotary body and crucible is tested with infrared probe.
Adding the method for material melts has two kinds, Yi Zhongshi：When the temperature of crucible and the temperature of rotating disk outer reach 180
During DEG C to 230 DEG C, motor is started, stabilization of speed starts according to every two minutes two grams of in 5000rpm to 8000rpm
Pellet is added in crucible, before charging, and the air hose and feed pipe in crucible are extracted out, added after particulate material, then turn back to
In crucible.It is another to be：12 to 15 grams of particulate material is added before heater is started, will be put in temperature probe embedment material,
After temperature of charge exceedes melting temperature, temp probe is extracted out, starts to start motor.
Particulate material is useless to arrive screw extruder during heating, so the process for not stirring and extruding, there is plasticizing
Uneven the problem of, the material particles being melted are caused the situation of " half-cooked rice grain ", tiny not be completely melted occur
Grain, it may appear that on fiber, produces the phenomenon of a fiber beading.Under the first feed way, the beading phenomenon on fiber is very serious.
Second of feed way beading phenomenon is well a lot.
The mode of the first and second plus material melts, does not all use the feed pipe being inserted into crucible, because entering
Expects pipe internal diameter is smaller, and particulate material is easily blocked in pipe, and only melt after abundant melting can compare in squeezing action
Successfully it is flowed into crucible.
0.36 millimeter of the internal diameter in hole or pin hole on crucible internal walls, the length of 0.36 millimeter of inner diameter hole is 3 to 4 millimeters.
Endoporus inner circle sectional area is 0.1 square millimeter, and the inner section product of linear stretch passage is 90 times of the inner circle sectional area of spray orifice.
The internal diameter in hole or pin hole on crucible internal walls also tested 0.18 millimeter, and the length of 0.18 millimeter of inner diameter hole is 4
Millimeter.Inner hole section product is 0.025 square millimeter, and the inner section product of linear stretch passage is the 353 of the inner circle sectional area of spray orifice
Times.
The parameters such as temperature and viscosity due to material are difficult accurate determination, want to determine jet v by these parameters0Initially
Speed is relatively difficult.Obtain v0Project data be flow by melt, the internal diameter of spray orifice 4 can obtain v0Value,
Again by the equal principle of the flow at the flow at spray orifice 4 and linear stretch channel outlet 9, jet is obtained logical in linear stretch
Flow velocity v at road outlet 92, so as to obtain the external diameter in linear stretch channel exit jet.Jet can also be exported to exist
Stretching ratio in linear stretch passage.Again by the external diameter of the jet at the linear stretch passway of actual measurement, to verify
The degree of accuracy of formula 1 or the reference value for assessing formula 1.
Because the mobility of raw material is very sensitive to the temperature of raw material, producer is according to phase in the mobility of demarcation raw material
The testing standard demarcation of pass.So when makeing melt spinning experiment, first substantially to determine mobility of the material in crucible, that is, need
Highly viscous material could be extruded from the aperture of crucible internal walls, produced when this extrusion force is with spinning with great extrusion force
Raw centrifugal force has a kind of corresponding relation, so that it is determined that rotating speed and temperature when going out spinning, as long as this rotating speed determined does not have
Have more than 8000rpm, temperature is not above the heating limit of testing equipment in itself, it is possible to determined with this parameter at a high speed from
Rotating speed and temperature during heart spinning.
When rotary body rotates at a high speed, the flowing of cold air is stirred, can reduce the temperature in rotary body crucible, while
It can reduce the temperature in linear stretch passage, so to try to maintain the temperature of the temperature and rotary body in crucible, rotary body
The temperature (being determined with non-contacting infrared probe) of appearance is it can be assumed that be the temperature in linear stretch passage.
One group of PP GRANULES material spinning experiment data is：
Polypropylene melt value is 25g/10min (230 DEG C, 2.16kg), molecular weight 210,000, molecular weight distribution 3.5, ashes
0.22%.
The internal diameter of crucible internal walls pin hole is 0.36 millimeter.
When crucible temperature is raised to 220 DEG C (infrared acquisition temperature), 210 DEG C of rotary body outer side elevation infrared acquisition, now
Add 12 grams of particulate material.15 minutes heat times, it is 224 DEG C to measure material temperature with point thermometer probe, now starts motor,
Setting speed 7000rpm.
The temperature controller of central intake pipe is set in 300 DEG C, and the temperature of radial air flow is about 215 DEG C, air inlet in crucible
Pressure 0.2Mpa.
The air inlet pipe in heating dish enters cold air, 28 DEG C of room temperature, gas pressure 0.3MPa in pipe up and down.
The blower fan of the six outside air drafts in Mian Cong centers is opened.
Timing when stabilization of speed is in 7000rpm.When 7000rpm stable operations 2 minutes, the fluctuation of rotating speed is monitored
Situation 1 minute, measuring rotating speed fluctuation range be 6950rpm to 6970rpm, also illustrate that angular acceleration very little.
Because high-speed rotary body has convex portion up and down, it is embedded into the recess of static heating dish up and down, when the rotational speed is high, has
Upward buoyancy.When stream pressure reaches balance in air gap up and down, the rotor of motor, the axle of motor and rotating centrifugal disk
3 are suspended in high velocity air.And the displacement of axial motion is not measured with conventional method.
Simultaneously about 2 to 4 millimeters of rotating centrifugal disk edge is deep into the thin wire with point thermometer probe (thermistor)
Place's (because air velocity is very high, probe is influenceed and swung by air-flow), continues to collect the fiber just projected from tunnel in 3 seconds, uses
In detection.The temperature that point thermometer can be read simultaneously is 45 DEG C to 47 DEG C.
Long journey closes motor after 8 minutes, and motor main shaft is after 3.2 minutes, and rotating speed is zero (carrying brake resistor).
The top cover of equipment is opened, checks that the residual material in crucible is few, it is believed that material passed through in 8+1+1=10 minutes
The apertures of two 0.36 millimeter of internal diameters (clock of plusing thirty be because when rotating speed reaches 5000rpm, having seen fiber appearance,
Rising to 7000rpm from 5000rpm needs nearly 1 minutes).
Two groups of fiber on thin wire is collected, fibre fineness analyzer is used, in 40 times of optical power, on-screen display (osd) area
It is 6.5 microns inside to find a maximum fiber of diameter.The reasons why looking for most thick fiber is that the fiber wound on thin wire has
Two kinds, a kind of is that the fiber projected in tunnel is just stretched from jet, a kind of to pass through half of rotary body girth in air
The fiber that drawing path was stretched.Most thick diameter should just stretch the fiber that tunnel face is projected from jet.
According to 0.5 cubic centimetre per minute of volume flow of each spray orifice or nozzle, spray orifice internal diameter is 0.36 millimeter,
According to radius of turn and angular velocity of rotation, it is 123.1 meter per seconds that can calculate and the speed projected tunnel face is stretched from jet.May be used also
Jet external diameter when calculating exit flow injection tunnel face is 9.17 microns.And measured value is 6.5 microns.It can be seen that, from engineering technology
From the perspective of formula 1 be with actual reference value.
Why occur that the measured value of the external diameter of the fiber just projected from linear stretch passway is less than theoretical value, it is a kind of
Explanation is that the external diameter of the jet projected in spray orifice mouthful 4 is less than the internal diameter size of spray orifice.
The spray orifice internal diameter of theoretical calculation is 39 times with projecting the ratio between external diameter of jet at tunnel exit, the value actually measured
It is 55.4 times.
Rotating speed is in 6000rpm, with molten value 1500g/10min particle polypropylene material.The charging rate of melt is each
Spray orifice is 0.5 cubic centimetre per minute, is calculated since stabilization of speed, and spinning obtains 8.2 grams of tunica fibrosas for 10 minutes.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to.Above-mentioned
In embodiment, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within, made
Any modification, equivalent substitution and improvements etc., should be included within protection domain of the present utility model.
Claims (10)
1. a kind of high speed centrifugation device for spinning, including：
Rotating driving device；
Rotary body：Driven and rotated by the rotating driving device；
Accommodating chamber：Positioned at the centre of the rotary body, for accommodating spinning material；
Material feeding part：Sprue coordinates with the accommodating chamber, for being fed into accommodating chamber；
Spray-hole：For several, the periphery of the accommodating chamber is distributed in respectively, and the accommodating chamber connects with each described spray-hole
It is logical, when rotary body rotates, spray spinning；
Characterized in that, also including linear stretch passage：If being arterial highway, it is uniformly and radially arranged on the rotary body, together
The corresponding spray for coordinating at least one spray-hole, forming connection accommodating chamber and rotary body exterior space of described linear stretch passage
Linear stretch passage is penetrated, the length of the linear stretch passage is spray hole length 3 ~ 1000 times.
2. high speed centrifugation device for spinning according to claim 1, it is characterised in that the inner section of the linear stretch passage
Size is 3-20000 times of the spray-hole inner section size.
3. high speed centrifugation device for spinning according to claim 2, it is characterised in that the center line of the linear stretch passage
It is vertically arranged with the rotation axis of the rotary body.
4. the high speed centrifugation device for spinning according to claim 1 or 2 or 3, it is characterised in that the rotary body includes container,
The rotating disk being fixed together with container；The inner chamber of the container is the accommodating chamber, and the spray-hole is arranged on described
On chamber wall, the rotating driving device drives the container to rotate, and the container is using its axis as pivot center.
5. high speed centrifugation device for spinning according to claim 4, it is characterised in that the two sides of the rotating disk does not set
One heating and thermal insulation disk and the second heating and thermal insulation disk, the first heating and thermal insulation disk and the second heating and thermal insulation disk are even with the rotating disk
Between there is gap, the even outer with the rotating disk in outer of the first heating and thermal insulation disk and the second heating and thermal insulation disk is mutually fitted
Match somebody with somebody.
6. high speed centrifugation device for spinning according to claim 5, it is characterised in that the first heating and thermal insulation disk and second
Gas blow pipe is set respectively on the lateral wall of heating and thermal insulation disk, and the gas blow pipe is set close to the rotating disk, and is looped around described
On the lateral wall of first heating and thermal insulation disk and the second heating and thermal insulation disk, some gas holes are set on the tube wall of the gas blow pipe, blown
The air-flow gone out is outside towards the radial direction of the rotating disk.
7. high speed centrifugation device for spinning according to claim 6, it is characterised in that the first heating and thermal insulation disk and second
Thermal insulating disc is set respectively on the face away from the rotating disk on heating and thermal insulation disk.
8. high speed centrifugation device for spinning according to claim 6, it is characterised in that with unification air inlet pipe in the accommodating chamber,
The air inlet pipe connects hot gas feedway, and the air inlet pipe provides hot gas to the accommodating chamber.
9. high speed centrifugation device for spinning according to claim 8, it is characterised in that the gas outlet of the air inlet pipe is close to institute
State accommodating chamber centrally disposed, the gas outlet is several, and circle distribution is in the pipe end of the air inlet pipe respectively.
10. high speed centrifugation device for spinning according to claim 8, it is characterised in that the material feeding part is filling tube, with institute
State the adjacent setting of air inlet pipe；Or the filling tube is enclosed on the periphery of the air inlet pipe, is formed and be nested.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107201560A (en) * | 2016-12-23 | 2017-09-26 | 杭州大铭光电复合材料研究院有限公司 | High speed centrifugation device for spinning |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107201560A (en) * | 2016-12-23 | 2017-09-26 | 杭州大铭光电复合材料研究院有限公司 | High speed centrifugation device for spinning |
| WO2018113779A1 (en) * | 2016-12-23 | 2018-06-28 | 杭州大铭光电复合材料研究院有限公司 | High-speed centrifugal spinning device |
| CN107201560B (en) * | 2016-12-23 | 2023-03-10 | 杭州大铭光电复合材料研究院有限公司 | High-speed centrifugal spinning device |
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