CN207845838U - One kind prevents adhesion two-chamber filament spinning component - Google Patents

Abstract

One kind of the utility model prevents adhesion two-chamber filament spinning component, by being formed with lower component：Assembly housing, retaining ring, upper cover, double inner cavity sand cups, kidney-shaped distribution plate, kidney-shaped sealing ring, flat-rammer, alumiseal circle, multiple filtration net, integral sealing gasket, spinneret, component connect block, gasket.It is both provided with concave-convex anti-adhesion structure on the inner wall with the component of molten polymer joint of filament spinning component, anti-adhesive attraction of the polymer melt in filament spinning component may be implemented；The prevent adhesion mechanism of action of mechanism of the bumps is：Concave-convex anti-adhesion structure includes sunk part and projection portion, projection portion is higher by the setting of member internal walls surface, being in direct contact between highly viscous polymer melt and member internal walls is reduced using supporting role between points, and gas suspension effect is formed under the action of high temperature and pressure melt, plays and prevents adhesion from separate type.

Description

One kind prevents adhesion two-chamber filament spinning component

Technical field

The utility model is related to textile technology fields, and in particular to one kind prevents adhesion two-chamber filament spinning component.

Background technology

British patent in 1845 is come from the earliest record of melt spinning process.Nineteen thirty-nine melt spinning is as manufacture nylon The production technology of 66 fibers obtains industrial applications.Melt spinning basic process includes material melts, squeezed out from spinneret micropore, Melt stream cooling and solidifying forming.Manufactured long filament can be used bobbin coiling and molding or carry out other processing.In melt spinning In the process, polymer feeds extruder, and it is tired to be sent to metering further along after screw rod transmission, plasticizing, melting:Metering is poly- to pass through essence Really metering ensures that the melt of polymer can be flowed into stable and uniform in critical component filament spinning component, the melt in filament spinning component By the filtering of filter medium, it is provided in porous spinneret as thread by high pressure indentation after eliminating impurity and bubble；Carefully Stream by horizontal blowing while being quickly cooled down (quenching), since the effect of following wireline reel also generates super drawing so that diameter Attenuate；As-spun fibre is wound into certain package.

Filament spinning component is mainly the filter layer being made of upper layer overcurrent lid, metal mesh and filter sand, distributes under normal conditions Plate and porous spinneret are constituted.Spinning melt is lain prone type after top-level entries flow into filament spinning component via the back taper minister in ancient times in sand chamber Overcurrent lid diffusely enter component inner cavity in, filtration combination layer is ingeniously entered under the action of upper stressor layer.Filter layer usually has Multiple filtration net and METALLIC FILTRATION SAND composition.The a piece of coarse net for not luring steel wire to weave into often is placed in the top layer of filter layer, is become Cover net or cover net, it is therefore an objective to which the sundries for stopping bulk and the layer of sand for preventing lower part move.When being filtered using filter sand, press in principle Grit size is carefully sequentially arranged by thick.When placing multistorey strainer mesh, and by the descending principle of mesh size.In filtering group The bottom for closing layer has placed one layer of supporting network, it is typically to be made of a piece of or two panels coarse net, it is therefore an objective to support upper layer mistake Filtering layer increases longitudinal rigidity, has the function that not to be depressed, it can also prevent from draining to the work of spinneret orifice under broken filter sand sometimes With.Melt after fine filtering flows into the hole of distribution plate.On the one hand the effect of distribution plate is to play support upper level filter Layer, is on the other hand before polymer melt is assigned to spinneret plate as homogeneously as possible so that the uniform flow per hole also replaces Spinneret has shared the melt pressure of part so that spinning plate surface is unlikely to superpressure and deforms.Polymer melt is squeezed into After the guide hole of spinneret, micropore gives the certain shape of melt and is extruded as strand, finishes melt like this in spinning group The design of the filament spinning component of part internal flow need to mainly determine its structure snd size.Wherein component external structure snd size are main The problems such as needing to consider the intensity and corrosion resistance of itself, the problem of also relating to installing and dismounting and leakproofness.Filament spinning component Internal element just really carries main spinning function, it should how to select filtration combination element, hybrid element, distribution member With spinneret panel element etc., it is necessary to comprehensive to go fully to calculate from multi-angles such as hydrodynamics, melt rheology and heat conductions And consideration.Certainly the problem of can not ignoring the inner sealing of each element and strong rigidity while design.Melt spinning is in height The lower progress of temperature, if polymer melt is chronically at high humidity state, it may occur that degradation influences the quality of precursor, so designing When component internal channel, melt should be made to be uniformly distributed in each micropore of spinneret as far as possible, channel resistance answer it is equal, in component There cannot be dead angle, in case melt residence time is long and decomposes.It should process smooth with king's part surface of melt contacts, Material cannot be made to be detained due to wall surface resistance.Fluid motion uniformity includes mainly fluid motion speed, pressure in filament spinning component The contents such as power, residence time, discharging distribution.Ideal filament spinning component should be able to ensure that above-mentioned parameter is all identical simultaneously, sample presentation It just can ensure that polymer melt is evenly distributed to identical matter in each spinneret orifice of spinneret, it is equal finally to spin out structural behaviour Even high quality fibers.However, the factor for influencing flow field uniformity in filament spinning component is numerous, wherein mainly having material properties, work Skill condition, device structure parameter etc..When the above two control identical, device structure is its most important influence factor again.

The flow behavior of polymer melt is more complex compared with for small molecule solution.Under external force, melt is not Irreversible viscous yielding is only shown, but also shows reversible flexible deformation.This is because the flowing of polymer is not It is simple Relative sliding between macromolecular chain, but the overall result of moving cell transition successively.Under external force, macromolecule Chain is inevitably stretched along external force direction, removes external force, and macromolecular chain will be spontaneously rolled up again.This conformation becomes Elastically-deformable development and Recovery Process caused by changing are relaxation, which depends on polymer molecular weight, outer masterpiece With time, temperature etc..In molding process, the appearance of flexible deformation and its subsequent lax pair fiber, dimensional stability, Internal stress etc. has substantial connection.

High polymer molten viscosity is cut flowing and is mainly characterized in that:It is very high to cut viscosity；Viscosity strong depend-ence trimming rate is cut, absolutely Most of high polymer moltens belong to pseudoplastic fluid；Velocity flow profile of the pseudoplastic behavior high polymer molten in pipe is not parabolically It is linear, and it is close to plunger flow, velocity gradient concentrates on near-wall, may have tube wall sliding to move in some cases, It there may also be molecular-weight gradation effect in flowing, low molecular weight fraction made to be more than pipe axis in near-wall.

It is not constant temperature process in actual production process, and is unstable state, but above-mentioned spinnability is theoretical, to changes It is all control that the forming process of fiber, which still has preferable reference and directive significance, the principal element obtained from spinnability theory, The factor that spinning processed is smoothed out.Such as be viscosity and surface tension to capillary mechanism major influence factors, cohesive energy is ruptured The principal element that mechanism influences is deformation speed and viscoplasticity size etc..Understanding the spinnability principle of melt contributes to us adjusting When saving spinning technique, optimal conditions are targetedly selected, to avoid occurring wild effect in spinning.Change spinning king The rheological property of skill parameter and raw material may make the variable element range for stablizing spinning fully increase, the convenient tune with technique It is whole.Since the high temperature polymer melt of melting needs to shift and flow in filament spinning component, high-temperature fusant and filament spinning component Inevitably there are contacts for quality inspection, also just inevitably there is adherency on the inner wall of filament spinning component, although mesh It is preceding the smooth enough of its inwall processing largely to be reduced due to interior when preparing filament spinning component Wall surface problem and caused by attachment of polymers, still, due to the limitation of machining accuracy and processing technology, it is difficult to accomplish that inner wall is complete It is complete smooth, it still will produce the adherency of polymer in this way；Also have in spinning process in polymer and spinning group in the prior art The scheme that lubricant is added between the inner wall of part, can play certain anti-adhesiving effect in this way, but these profits for being added Lubrication prescription will certainly enter in polymer, and then the property of polymer and the property of follow-up spinning generate unpredictable shadow It rings and worthless.Due to the adherency of the polymer in spinning process, all needed after the production schedule for not completing a batch Filament spinning component is thoroughly cleaned, time and cost can be caused greatly to consume the cleaning of filament spinning component, but also Can be difficult to be cleaned, and subsequent production can be adversely affected there are some dead angles.Therefore, there is an urgent need for exploitations one Kind new anti-adherency of filament spinning component or anti-blocking techniques, the shortcomings that overcome in the prior art.

Utility model content

For the prior art there are above-mentioned technical problem, the utility model provides and a kind of can effectively reduce polymer melt and exist The novel two-chamber filament spinning component that prevents adhesion of filament spinning component inner wall adherency.

To achieve the above object, the utility model provides following technical scheme：

One kind prevents adhesion two-chamber filament spinning component, by being formed with lower component：Assembly housing 1, retaining ring 2, upper cover 3, double inner cavities Sand cup 4, kidney-shaped distribution plate 5, kidney-shaped sealing ring 6, flat-rammer 7, alumiseal circle 8, multiple filtration net 9, integral sealing gasket 10, Spinneret 11, component connect block 12, gasket 13；Assembly housing 1 surrounds entire component internal, and by retaining ring 2 by component Various components inside is locked with assembly housing 1；Be arranged in order from bottom to top between double inner cavity sand cups 4 and upper cover 3 for：Multiple filtration Net 9, alumiseal circle 8, flat-rammer 7 and kidney-shaped distribution plate 5, and be attached by kidney-shaped sealing ring 6, spinneret 11 and double inner cavities It is placed with integral sealing gasket 10 between sand cup 4, has spinneret 11, double inner cavity sand cups 4 and upper cover 3 in assembly housing 1, successively It arranges from lower to upper, it is tightly compacted that filament spinning component by gasket 13 connects block 12 with component；It is complete there are two being gathered around in the upper cover 3 Complete independent cavity, two strands of melts from box house are oriented to and flow into the molten chamber in upper cover 3 by it, and in kidney-shaped sealing ring It, will be in each inner cavity of two strands of melt correct guidance injection pair inner cavity sand cups 4 under 6 sealing function；The kidney-shaped distribution plate 5 For two individual components, and it is arranged in the top of the respective intracavitary of double inner cavities sand cup 4 respectively；In double inner cavity sand cups 4 It gathers around there are two completely self-contained cavity, half round waist type, the semicircle Kidney cavity arranged opposite is presented in cross section, and centre is divided completely Every；In upper cover 3, the individual kidney-shaped distribution plate 5 of flat-rammer 7, two, each inner cavity of double inner cavity sand cups 4, spinneret 11 and melt Body, which flows through, to be both provided with bumps and prevents adhesion mechanism on the surface being in contact with polymer melt on pipeline；The anti-sticking connection of the bumps Structure is equally distributed recess and protrusion.

Preferably, the recess in the concave-convex anti-adhesion structure and protrusion is spaced is uniformly distributed；The surface area of protrusion It it is 0.5-2 square millimeters, the surface area of recess is 1-3 square millimeters.

Preferably, wherein the cross sectional shape of the gasket 13 is cydariform or trapezoidal, the gasket of each filament spinning component Quantity is 2, and the inlet and outlet for connecing two melt canals of block 12 and upper cover 3 with component respectively match.

Preferably, it is attached by kidney-shaped sealing ring 6 between double inner cavity sand cups 4 and upper cover 3, kidney-shaped sealing ring 6 play the role of ensureing melt in respective intracavitary individual flow, while obstructing two bursts of leakages of melt and oozing between each other Leakage；Be arranged in order from bottom to top between double inner cavity sand cups 4 and upper cover 3 for：Multiple filtration net 9, alumiseal circle 8,7 and of flat-rammer Kidney-shaped distribution plate 5.

Preferably, the multiple filtration net 9 needs with 8 closely knit compression of alumiseal circle, to prevent inside double inner cavity sand cups 4 Multiple filtration net 6 play and metal sand inside sand cup leak downwards；Multistorey strainer mesh and list of the multiple filtration net 6 containing bound edge Layer support filter screen.

The beneficial effects of the utility model：

One kind of the utility model prevents adhesion two-chamber filament spinning component, by being formed with lower component：Assembly housing, retaining ring, on Lid, double inner cavity sand cups, kidney-shaped distribution plate, kidney-shaped sealing ring, flat-rammer, alumiseal circle, multiple filtration net, integral sealing gasket, Spinneret, component connect block, gasket.Compared with traditional melting two-chamber filament spinning component, has the following advantages：Due in spinning group It is both provided with concave-convex anti-adhesion structure on the surface for the component of part being in contact with molten polymer, polymer melt may be implemented Anti- adhesive attraction in filament spinning component；The prevent adhesion mechanism of action of mechanism of the bumps is：Concave-convex anti-adhesion structure includes recessed Concave portion point and projection portion, projection portion are higher by parts surface setting, and high viscosity is reduced using supporting role between points Polymer melt and parts surface between be in direct contact, and under the action of high temperature and pressure melt formed gas suspension make With playing and prevent adhesion from separate type；Sunk structure plays the role of accommodating levitation gas, cooperates with projection portion；Protrusion Surface area be 0.5-2 square millimeter, the surface area of recess is 1-3 square millimeters, it is preferable that raised surface area is 1 square The surface area of millimeter, recess is 2 square millimeters, and sunk part and lug boss branch point are connected to form accurate cellular catch net Lattice separate parts surface and polymer melt, increase the effect to prevent adhesion.The area of projection portion and sunk part is unsuitable It is excessive, if area is excessive, good preventing adhesiving effect can not be played, and polymer melt directly with parts surface phase The case where contact, is without two；The area of the two is also unsuitable too small, if area is too small, can not play the estimated effect that prevents adhesion Fruit, and difficulty of processing also can be very big.Concave-convex anti-adhesion structure can be in the various pieces for preparing filament spinning component respectively at this Apply on a little components, may be used by with bumps prevent adhesion mechanism the sark directly docile and obedient form on the surface of component into Row can also be carried out in the form of precision lathe processing, and specific processing method is common zero in the prior art Part manufacturing process, no longer describes herein.

Description of the drawings

Fig. 1 is that the utility model prevents adhesion the schematic diagram of two-chamber filament spinning component.

Reference numeral：

1 --- assembly housing；

2 --- retaining ring；

3 --- upper cover；

4 --- double inner cavity sand cups；

5 --- kidney-shaped distribution plate；

6 --- kidney-shaped sealing ring；

7 --- flat-rammer；

8 --- alumiseal circle；

9 --- multiple filtration net；

10 --- integral sealing gasket；

11 --- spinneret；

12 --- component connects block；

13 --- gasket.

Specific implementation mode

The utility model is described in detail below in conjunction with specific embodiment and attached drawing.

One kind prevents adhesion two-chamber filament spinning component, by being formed with lower component：Assembly housing 1, retaining ring 2, upper cover 3, double inner cavities Sand cup 4, kidney-shaped distribution plate 5, kidney-shaped sealing ring 6, flat-rammer 7, alumiseal circle 8, multiple filtration net 9, integral sealing gasket 10, Spinneret 11, component connect block 12, gasket 13；Assembly housing 1 surrounds entire component internal, and by retaining ring 2 by component Various components inside is locked with assembly housing 1；Be arranged in order from bottom to top between double inner cavity sand cups 4 and upper cover 3 for：Multiple filtration Net 9, alumiseal circle 8, flat-rammer 7 and kidney-shaped distribution plate 5, and be attached by kidney-shaped sealing ring 6, spinneret 11 and double inner cavities It is placed with integral sealing gasket 10 between sand cup 4, has spinneret 11, double inner cavity sand cups 4 and upper cover 3 in assembly housing 1, successively It arranges from lower to upper, it is tightly compacted that filament spinning component by gasket 13 connects block 12 with component；It is complete there are two being gathered around in the upper cover 3 Complete independent cavity, two strands of melts from box house are oriented to and flow into the molten chamber in upper cover 3 by it, and in kidney-shaped sealing ring It, will be in each inner cavity of two strands of melt correct guidance injection pair inner cavity sand cups 4 under 6 sealing function；The kidney-shaped distribution plate 5 For two individual components, and it is arranged in the top of the respective intracavitary of double inner cavities sand cup 4 respectively；In double inner cavity sand cups 4 It gathers around there are two completely self-contained cavity, half round waist type, the semicircle Kidney cavity arranged opposite is presented in cross section, and centre is divided completely Every；In upper cover 3, the individual kidney-shaped distribution plate 5 of flat-rammer 7, two, each inner cavity of double inner cavity sand cups 4, spinneret 11 and melt Body, which flows through, to be both provided with bumps and prevents adhesion mechanism on the surface being in contact with polymer melt on pipeline；The anti-sticking connection of the bumps Structure is equally distributed recess and protrusion.

Due to being both provided with concave-convex anti-sticking connection on the surface for the component of filament spinning component being in contact with molten polymer Anti- adhesive attraction of the polymer melt in filament spinning component may be implemented in structure；The prevent adhesion mechanism of action of mechanism of the bumps is：It is recessed Convex anti-adhesion structure includes sunk part and projection portion, and projection portion is higher by parts surface setting, using between points Supporting role reduce being in direct contact between highly viscous polymer melt and parts surface, and in high temperature and pressure melt Gas suspension effect is formed under effect, is played and is prevented adhesion from separate type；Sunk structure plays the role of accommodating levitation gas, and convex Part is played to cooperate；The surface area of protrusion is 0.5-2 square millimeters, and the surface area of recess is 1-3 square millimeters, it is preferable that The surface area of protrusion is 1 square millimeter, and the surface area of recess is 2 square millimeters, and sunk part is connected shape with lug boss branch point At accurate cellular protection grid, parts surface and polymer melt are separated, the effect to prevent adhesion is increased.Projection portion It should not be too large with the area of sunk part, if area is excessive, good preventing adhesiving effect, and polymer can not be played The case where melt is directly in contact with parts surface is without two；The area of the two is also unsuitable too small, if area is too small, also not Estimated preventing adhesiving effect can be played, and difficulty of processing also can be very big.Concave-convex anti-adhesion structure can prepare filament spinning component Various pieces when apply on these parts respectively, may be used by with bumps prevent adhesion mechanism sark it is directly docile and obedient Form on the surface of component carries out, and can also be carried out in the form of precision lathe processing, specific processing method is existing There are the common parts machining means in technology.

Wherein, the recess in the concave-convex anti-adhesion structure and protrusion is spaced is uniformly distributed；Protrusion surface area be 0.5-2 square millimeters, the surface area of recess is 1-3 square millimeters.

Wherein, the cross sectional shape of gasket 13 is cydariform or trapezoidal, and the gasket quantity of each filament spinning component is 2, point The inlet and outlet for not connecing two melt canals of block 12 and upper cover 3 with component match.

It is attached by kidney-shaped sealing ring 6 between double inner cavity sand cups 4 and upper cover 3, kidney-shaped sealing ring 6 plays guarantee melt In the effect of respective intracavitary individual flow, while obstructing the leakage of two strands of melts and mutual leakage；Double inner cavity sand cups 4 Be arranged in order from bottom to top between upper cover 3 for：Multiple filtration net 9, alumiseal circle 8, flat-rammer 7 and kidney-shaped distribution plate 5.

Multiple filtration net 9 needs with 8 closely knit compression of alumiseal circle, to prevent multiple filtration net 6 from existing inside double inner cavity sand cups 4 Play and metal sand leak downwards inside sand cup；Multistorey strainer mesh of the multiple filtration net 6 containing bound edge and mono-layer propping filter screen.

Finally it should be noted that above example is only to illustrate the technical solution of the utility model, rather than to this reality With the limitation of novel protected range, although being explained in detail to the utility model with reference to preferred embodiment, this field it is general Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the utility model, without departing from this The spirit and scope of utility model technical solution.

Claims (1)

1. The two-chamber filament spinning component 1. one kind prevents adhesion, by being formed with lower component：Assembly housing, retaining ring, upper cover, double inner cavity sand cups, Kidney-shaped distribution plate, kidney-shaped sealing ring, flat-rammer, alumiseal circle, multiple filtration net, integral sealing gasket, spinneret, component connect Block, gasket；Assembly housing surrounds entire component internal, and by retaining ring by component internal all parts and assembly housing Locking；Be arranged in order from bottom to top between double inner cavity sand cups and upper cover for：Multiple filtration net, alumiseal circle, flat-rammer and kidney-shaped Distribution plate, and be attached by kidney-shaped sealing ring, it is placed with integral sealing gasket between spinneret and double inner cavity sand cups, in group There are spinneret, double inner cavity sand cups and upper cover in part shell, arranges from lower to upper successively, filament spinning component is connect by gasket and component Block is tightly compacted；It is gathered around in the upper cover there are two completely self-contained cavity, two strands of melts from box house are oriented to by it It flows into the molten chamber in upper cover, and under the sealing function of kidney-shaped sealing ring, by two strands of double inner cavity sand of melt correct guidance injection In each inner cavity of cup；The kidney-shaped distribution plate is two individual components, and is arranged in the respective of double inner cavities sand cup respectively The top of intracavitary；It is gathered around in double inner cavity sand cups there are two completely self-contained cavity, half round waist type is presented in cross section, should be partly Round waist type cavity arranged opposite, it is intermediate to separate completely；It is characterized in that：In upper cover, flat-rammer, two individual kidney-shaped distribution Plate, double inner cavity sand cups each inner cavity, spinneret and melt flow by the road on the surface being in contact with polymer melt on It is both provided with concave-convex anti-adhesion structure；The bumps anti-adhesion structure is equally distributed recess and protrusion；The bumps prevent adhesion Recess in structure and protrusion is spaced is uniformly distributed；The surface area of protrusion is 0.5-2 square millimeters, and the surface area of recess is 1-3 square millimeters；

   Wherein the cross sectional shape of the gasket is cydariform or trapezoidal, and the gasket quantity of each filament spinning component is 2, respectively The inlet and outlet that two melt canals of block and upper cover are connect with component match；

   It is attached by kidney-shaped sealing ring between double inner cavity sand cups and upper cover, kidney-shaped sealing ring, which plays, ensures that melt exists The effect of respective intracavitary individual flow, while obstructing the leakage of two strands of melts and mutual leakage；Double inner cavity sand cups with Be arranged in order from bottom to top between upper cover for：Multiple filtration net, alumiseal circle, flat-rammer and kidney-shaped distribution plate；

   The multiple filtration net needs with the closely knit compression of alumiseal circle, to prevent multiple filtration net in sand inside double inner cavity sand cups The internal play of cup and metal sand leak downwards；Multiple filtration net contains the multistorey strainer mesh and mono-layer propping filter screen of bound edge.