US3778909A - Apparatus for the continuous heat treatment of runing yarns - Google Patents

Apparatus for the continuous heat treatment of runing yarns Download PDF

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US3778909A
US3778909A US00246326A US3778909DA US3778909A US 3778909 A US3778909 A US 3778909A US 00246326 A US00246326 A US 00246326A US 3778909D A US3778909D A US 3778909DA US 3778909 A US3778909 A US 3778909A
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flow duct
valve
pressure
yarn
treatment
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K Ostertag
H Nilgens
H Scheiber
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Akzona Inc
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Akzona Inc
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C29/00—Finishing or dressing, of textile fabrics, not provided for in the preceding groups

Definitions

  • the pressure locking means is preferably constructed with a special labyrinth seal.
  • This invention generally relates to apparatus for the continuous heat treatment of agroup or bundle of synthetic filaments, continuous yarns or the like, especially spun tows of filaments for industrial purposes, at temperatures above 100C. and in substantially sealed treatment chambers.
  • thermoplastic fiber-forming polymers as endless yarns, strands or tows are normally subjected after spinning to a heattreatment and stretching process followed by heat stabilization or partial to complete shrinkage.
  • Known arrangements for carrying out the heat treatment include steaming chambers through which the tows or multifilament yarns delivered from the spinning stations, having been divided up into individual yarn I groups or thread bundles, are guided in the form of such groups or bundles laterally separated at a short distance from one another.
  • the length of the steaming chambers and hence the average residence time of the tows or yarns in the treatment zone is governed by the process conditions, more particularly by the required stretching rate, by the polymer material, by the denier or size of the monofilaments, by the cross section of the yarn and by the properties of the treatment medium.
  • the length of the steaming chamber or treatment zone amounts to approximately 10 meters in,
  • the steaming chambers which are preferably made of rust proof steel alloys involve a considerable expense. They also occupy a very large amount of space and can readily cause a bottleneck to the economically interesting and desirable production rates which may otherwise be achieved with modern stretching or drawing apparatus.
  • the length of the steaming chamber is essentially attributable to the low heat-transfer coefficients between the treatment medium, i.e. superheated steam, and the travelling yarn or tow. The values which can be achieved for the heat-transfer coefficients are in the range from 10 to 100 kcal/m hC.
  • the steaming or heat treatment chamber through which the group of yarns or tows is guided is covered by a hood to avoid steam losses and to prevent the conditions prevailing therein from being adversely affected by the escaping steam. Accordingly, in the event of breakage of an individual yarn for example, it is not normal for this yarn to be immediately reintroduced because the yarn cannot be threaded in or guided through the apparatus without opening the cover of the steaming chamber.
  • the treatment process for the entire group of yarns is only interrupted after an economically reasonable minimum number of breaks, and the broken yarns are then reintroduced together. This results in varrying quantities of waste and stoppage times attributable to the device.
  • the heat-transfer coefficients between the treatment medium and the filamentary mate-. rial being treated could be improved.
  • a heated substantially vaporous treatment medium under excess pressure for example saturated steam with temperatures above C., instead of the highly superheated low-pressure steam which only allows moderate heat-transfer coefficients. Due to condensation of the steam, the time required to heat the filament to the stretching temperature is considerably reduced by virtue of the fact that the heat-transfer coefficients are 100 times higher, in addition to which the stretching forces required and/or the requisite stretching temperatures are reduced because of the plasticizing effect of the condensate on the filaments.
  • any individual treatment zone must be designed for at least the excess pressure of the vaporous or gaseous treatment medium and that pressure locks must be provided at the inlet and outlet ends of such treatment zone through which the yarn, tow or the like is continuously introduced and discharged, and such pressure locks must effectively prevent pressure losses through dissipation of the treatment medium from the treatment zone to the surrounding atmosphere.
  • Pressure locks in treatment zones for textile yarns, fabric webs or the like are shown in various known embodiments, but unfortunately they either do not allow the textile material to be continuously treated (US. Pat. No. 3,140,594) or are only suitable when there are very small pressure differences between the textile material being treated and the outside atmosphere.
  • Other known devices are adaptable only to web-like sheets or fabrics (US. Pat. Nos. 3,032,890; 3,126,724 and 3,137,151).
  • U. Pat. No. 3,213,470 several pressure cells filled with superheated steam are arranged one behind the other in series, the cells being separated by plates and joined together by small openings or holes with limited flow cross-sections for passage of a textile yarn.
  • One object of the present invention is to obviate the disadvantages arising in conventional heat treatment apparatus required for the continuous processing of a number of running yarns, tows, threads, strands or similar bundles of filamentary textile materials, particularly to provide apparatus occupying aslittle space as possible while being designed in such a way that when one yarn or group of filaments breaks, it can be reintroduced or rethreaded in the same running position and again subjected to the heat treatment process independently of the remaining yarns or groups of filaments.
  • Another object of the invention is to divide a common heat treatment chamber into a number of individual, parallel heating zones which can receive: steam or another heating medium independently of one another and which permit rethreading of a running yarn independently of one another.
  • Yet another object of the invention is to provide a heat treatment apparatus in which a plurality of individual heating chambers can be efficiently maintained under relatively high pressures so as to achieve correspondingly high heat transfer coefficients but with as little pressure loss as possible while a continuous yarn,
  • tow or the like is conducted through each heating chamber.
  • Still another object of the invention is to provide a heat treatment apparatus for a plurality of individual yarns or tows, especially as they are spun from a thermoplastic fiber-forming polymer and stretched by com ventional feed and draw'means, whereby each individual yarn or tow is continuously transported through its own individual treatment chamber at much higher speeds and with lower residence times and/or heat treatment temperature.
  • the combination which comprises a plurality of substantially closed elongated treatment chambers corresponding in number to the number of filamentary bundles being treated, each chamber being substantially in the form of a straight pressure pipe over most of its length, all of said pipes being arranged at lateral intervals apart from one another on substantially parallel axes, separate feed pipe means for introduction of the vaporous heating 1 medium into each treatment chamber, and two flow duct members including pressure locking means for each treatment chamber, one being arranged at the inlet end and the other at the outlet end thereof so that each is in direct fluid connection with the treatment chamber.
  • each pressure locking means with at least one valve throttling element which is displaceably arranged in the flow duct path for variation of the throttle cross-section, i.e., so that the flow cross-section of the duct carrying the yarn or tow can be changed according to different positions of the valve element between an effective minimum working opening or cross-section up to a maximum cross-section which preferably corresponds to the completely open or free cross-section of the flow duct.
  • the flow duct members define a flowpath through which the vaporous heating medium leaves the treatment chamber and through which the filamentary material to be treated is introduced into or discharged from the treatment chamber
  • the pressure locking means preferably includes a plurality of rotatably mounted valve cylinders, especially about four to six valve cylinders, which penetrate at about right angles into said flow duct path while being arranged in a row one behind the other on parallel axes of rotation lying in about the same plane, each valve cylinder being variably recessed at the point of intersection with the flow duct to alter the cross-section of the flow path upon rotation of the valve cylinder.
  • each valve cylinder can be constructed to provide a first arcuate or partially cylindrical recess on one side thereof about as deep as the diameter of the flow duct path so as to provide a maximum cross-section of the flow path when the valve cylinder is in its completely open position.
  • This first recess is adjoined at an acute angle by a narrower slot recess or opening extending from the first recess at a point spaced sufficiently inwardly from the outer circumference of the valve cylinder to provide a small working opening at the common junction of the two recesses.
  • valve cylinders of the pressurelock are larger in diameter and preferably about twice as large in diameter as the open path of the flow duct.
  • the valve cylinders are arranged in such a way that the axis of the flow duct of the pressure lock does not intersect the plane in which the axies of the cylinders are arranged, i.e. so that these two planes are offset and parallel to each other.
  • the apparatus By means of the apparatus according to the invention, it is possible continuously to treat a group of continuous yarns or tows corresponding in number to the number of treatment chambers provided. With the help of the pressure locks at the inlet and outlet ends of each heat treatment chamber, the filamentary bundle to be treated is introduced into the discharged from the treatment chamber and transported therethrough substantially free of any contact.
  • the throttle effect of the valve cylinders provided with the recesses whose free or open geometrical cross-section should be approximately 2.0 to 3.5 times and preferably from 2.5 to 3.0 times larger than the yarn cross-section, is extremely favorable and enables the apparatus to be used with a heated, substantially vaporous treatment medium under excess or superatmospheric pressure, for example with a dry saturated steam as the heating vapor.
  • At least one turbulence or eddy chamber is arranged between two adjacent valve cylinders along the flow duct path of the pressure locks.
  • These turbulence chambers which are generally known in themselves, are formed as a preferably cylindrical bore at least partly intersecting the flow duct path of the pressure lock, e.g., by using several parallel bores extending substantially perpendicularly of the flow duct and preferably being substantially equal in diameter to the diameter of the valve cylinders.
  • valve cylinders and the turbulence chambers are preferably arranged in such a way that their axes lie in planes that are parallel to one another and symmetrical to the axis of the flow duct, e.g., off-set to either side of the flow duct path in each pressure locking means.
  • valve cylinders having variable and adjustable throttle crosssections With the turbulence chambers, a considerable flow resistance is provided against the leakage flow of the vaporous heating medium due to the turbulent flow conditions created by the labyrinth system of flow paths, so that the pressure prevailing inside the individual yarn treatment chambers can be maintained with minimal steam losses.
  • the leakage losses are no greater than those found in the above-described steaming or heating chambers which operate in the absence of pressure or only at a very slight excess pressure.
  • valve throttling elements or cylinders of the pressure locks are arranged for displacement or rotation in such a way that the different or variable throttle cross-sections introduced by these valves into the flow duct path are simultaneously or synchronously adjustable either manually or by positive power transmission means, preferably in the form of paired gear wheels meshing with one another and interconnecting adjacent valves for synchronous rotation.
  • positive power transmission means preferably in the form of paired gear wheels meshing with one another and interconnecting adjacent valves for synchronous rotation.
  • paired gear wheels can be driven for example by means of a rack which is moved by a double-acting pneumatic or hydraulic cylinder or any similarly useful drive means.
  • FIG. 1 is an elevation of the apparatus according to the invention, partly in longitudinal section;
  • FIG. 2 is a cross-section on the line 22 of FIG. 1
  • FIG. 3 is a partial cross-section through one example of a pressure lock of the invention with operating means for the adjustable valve cylinders;
  • FIG. 4 is an elevation of the end plate of the apparatus with several yarn treatment chambers being combined to form a single unit
  • FIG. 5 is a plan view of the pressure locks of the apparatus combined to form a single unit
  • FIG. 6 is a longitudinal section through the flow duct of a pressure lock with the yarn inserted and the labyrinths closed;
  • FIG. 7 is a longitudinal section through the flow duct ofa pressure lock in the threading position with the labyrinths open;
  • FIG. 8 is a cross-section through the flow duct of a pressure lock on the line 8-8 of FIG. 6;
  • FIG. 9 is a cross-section through the flow duct on line 99 of FIG. 7;
  • FIG. 16 is a longitudinal section through a pressure lock according to another embodiment of the invention in the form of a stationary dismountable and manually adjustable labyrinth system of flow paths;
  • FIG. 17 is a cross-section through the pressure lock on line l7-l7 of FIG. 16.
  • a preferred embodiment of the heat treatment apparatus according to the invention is shown partly schematically in its overall arrangement as set forth in FIG. 1.
  • This apparatus requires a number of straight tubular pressure pipes 2, i.e., pipes which are pressure-resistant, corresponding to the number of running yarns Y.
  • These pipes are arranged at a lateral interval from one another and with their axes parallel to one another between the two end flanges 3.
  • the pressure pipes 2 which act as the heating chambers with a length adapted to particular process conditions, have been shown in FIG. 1 only in a restricted zone in the vicinity of the flanges 3, a large central portion having been omitted so that the feed pipes 4 through which the hot vapor or treatment medium enters the respective treatment chambers are visible only in FIG. 2.
  • the pressure pipes 2 are surrounded by a common heating box 5, for example in the form of a large cylindrical tube 6, closed at its ends by the flanges 3.
  • the heating box 5 is designed to be heated with steam or any other suitable vaporous heating medium by means of the inlet line 7 and the condensate outlet line 8 (FIG.
  • the flanges 3 of the apparatus are connected in intermediate crossbar members 10 in which the yarn guide channels or bores 11 are provided at suitable intervals for connection with pipes 2.
  • the stiffening ribs 12 together with crossbars 10 act to join flanges 3 to the pressure locks shown in simplified form in FIG. I and generally denoted by the reference numeral 13.
  • each individual feed pipe 4 for introducing the vaporous heating medium separately into each treatment chamber 9 in such a way that it can be separately shut off, i.e., by means of the valves 16.
  • the common regulating valve 18 which is adjusted to the saturated steam pressure in the treatment zone and which is arranged for example between the main steam line and a common reservoir 17.
  • Each shut-off valve 16 is preferably in the form of a quick-closing or fastacting solenoid valve which, in the event of yarn breakage or other disturbance of yarn supply is actuated through the controlling impulse of a conventional yarn monitor in order to shut off the supply of steam and preferably to also initiate the process of rethreading the temporarily deactivated treatment chamber.
  • valve cylinder diameter is twice as large as the diameter of the flow duct path and when the vertical interval between the flow duct axis and that plane in which the axes of the cylinders are arranged is equal to half the diameter of the flow duct path (i.e., at a distance or interval of approximately the radius of this flow duct path).
  • the yarns, threads or tows Y are passed through these pressure locks 13 as indicated by the direction of the arrows so as to be introduced into and discharged from the treatment chambers 9 maintained under elevated pressure.
  • an injector 14 Connected to the outlet end of each yarn treating chamber 9, there is an injector 14 which, for purposes of initial threading or in the event of yarn or tow breakage, is designed to receive compressed air through the lateralsupply line '15 threading and tensioning the yarn while the pressure locks remain open.
  • the apparatus according to the invention thus greatly facilitates athreading or rethreading operation, preferably by using a thread transporting means in the form of a jet ejector or injector l4 fed with compressed air.
  • This injector is preferably automatically actuated in the event of yarn or tow breakage for the purpose of threading or reintroducing the yarn or tow as quickly as possible.
  • a steam injector in which case the superheated steam used as the vaporous heating medium for the yarn may also be used as the working medium for operating the steam injector.
  • this has the disadvantage that where the rethreading system is automatically brought into operation, large quantities of steam are let off into the surrounding atmosphere. Safety measures must then be taken to prevent the operator from being scalded, e.g., by warning lights or signals as well as baffles or the like to contain the steam.
  • the injector 14 can be provided between the treatment chamber 9 and the pressure lock 13, although it is particularly favorable both for reasons of design and also for hydrodynamic reasons to provide the injector at the outlet end of the apparatus behind the pressure lock 13.
  • it can be connected to the discharge pipe 38' of the pressure lock either tightly in fixed position or even detachably, for example preferably by means of a bayonet joint or quick-release coupling 14'. With this easily detached injector, it is possible to readily shift it from one pressure lock to another as needed, especially where its use is relatively infrequent.
  • FIG. 2 is a cross-section through the yarn treatment chambers 9 and the common heating box 5.
  • a total of seven pressure pipes 2 are arranged parallel to and closely adjacent to one another.
  • the pipes 2 can also be arranged offset relative to one another or in any desired pattern. All of these pressure pipes have separate feed pipes 4 for introduction of the vaporous treatment medium, e.g., steam.
  • Shut-off valves 16 are provided in each of the feed pipes 4, each valve being actuated through an impulse from a corresponding yarnmonitor (not shown) in the event of yarn breakage.
  • Such yarn monitors are quite conventional as devices which rest upon or sense individual'yarns as they run through a prescribed path and then actuate a switch or otherwise transmit an impulse when the yarn leaves the prescribed path, e.g., due to breakage or other loss of the thread.
  • the feed pipes 4 are in turn connected to a steam accumulator or reservoir 17 which is in fluid communication with the steam main or supply source through a pressure regulated reducing valve 18.
  • a pressure regulated reducing valve 18 As shown in FIG. 2, the feed line 7 of the outer heating box of the apparatus is also connected to the steam reservoir 17 and a pressure detector or sensor 19 inside the heating box 5 transmits a regulating impulse to the reducing valve 18 through a suitable pressure convertor 20 or translating control device operating with ideal value/true value comparison.
  • Such pressure regulating means are quite conventional for maintaining a prescribed pressure and therefore are shown schematically in the drawing.
  • each treatment chamber 9 for an individual bundle of filament as a straight pressure pipe capable of being substantially closed or throttled at both ends while placing all of these chambers 9 or pipes 2 whithin a'common closed heating box 5, preferably as a large cylinder or tube, thereby permitting this box or enclosure 5 to be fed with the vaporous heating medium at both the same temperature and pressure as that introduced into the individual treatment chambers 9.
  • the individual pressure locks 13 are each provided in a common block designed to be assembled according to the building block principle so as to be rigidly connected to the heating box 5, i.e., the end flanges thereof.
  • the yarn treatment chambers 9, as pressure pipes 2 are welded or otherwise rigidly connected to the associated yarn inlet and yarn outlet ducts 10 of the pressure locks. All of these elements, i.e., the yarn treatment chambers, heated box, pressure locks and flow duct members, including even the injector, are thus preferably arranged on a common axis as indicated in FIG. 1.
  • the advantage of enclosing the pressure pipes 2 in box 5 is that the dissipation of heat from the walls of the treatment chambers 9 and the accompanying increased condensation of the vaporous heating medium can be largely avoided, and this lower condensation in chambers 9 has a favorable effect upon the quality of the yarn being treated. Because the external heating of the treatment chambers remains effective even during a temporary stoppage for reintroduction of a broken yarn, during which the supply of vaporous heating medium is turned off, all the treatment chambers remain at substantially the same temperature level so that the apparatus is not subjected to any thermal stressing or heat distortion.
  • a pressure lock I3 is shown in greater detail in FIG. 3. It consists of the block 21 in which the flow ducts 22 required for several pressure locks are drilled as indicated in the longitudinal direction and are located behind one another in this view.
  • the yarn or filamentary material Y isintroduced into (or discharged from) the treatment chambers 9 through these flow ducts which are connected for example to feed line 39 and discharge ll.
  • the block 21 also includes offset bores 23 and 24 which extend perpendicularly of the flow ducts (cf. FIGS. 6 to 9).
  • the bores 23 are each provided with a rotatable, ground valve cylinder 25 whose relatively thin stem 26 projects through the sealing plate 27 or 28 and at its head carries a gear wheel 29 which is fixed for rotation with the cylinder stem 26.
  • the axes of the bores 23 for the cylinders 25 and the axes of the bores 24, which form the eddy or turbulence chambers, lie respectively in parallel planes separated by substantially the same interval from the axis of the flow duct 22, i.e. at one radius of the flow duct path.
  • valve cylinders 25 and the chambers 24 function alternately along the flow path and the interval between the cylinder axes is selected in such a way as to correspond to the pitch diameter of the identical gear wheels 29 which mesh with one another.
  • the cylinders of one and the same pressure lock are guided through the sealing plate 27 or 28 on the same side and in addition are arranged in such a way that, corresponding to the opposite rotational movement of adjacent meshing gear wheels 29, the throttling recesses of the cylinders are arranged symmetrically to one another as shown in FIG. 6 in the vicinity of the flow ducts 22 which are to have the variable throttle cross-sections.
  • the gear wheels 29 are designed to be driven together through pinion means 30 moved by a rack 31 connected to the piston rod 32 ofa double-acting pneumatic cylinder 33 or the like on receiving the comman or signal.close labyrinth or open labyrinth.
  • the longitudinal movement of the rack 31 and the piston rod 32 is limited in both directions by a stop 34, e.g., so as to provide a 90 rotation of the valves.
  • the end plates 35 are used to secure the pneumatic cylinders through the lock nuts 36 while the plates 37 are used to mount the stops 34 whose pins are guided in a longitudinal groove 43 in the piston rod.
  • the yarn guide ducts 39 are provided at lateral intervals correspond to those separating the corresponding flow ducts 22 with which they are interconnected. To reduce wall friction, all the yarn guide ducts 29, 11 and 9 are made with polished surfaces.
  • FIGS. 4 and are an elevation and plan view, respectively, of part of the apparatus with seven yarn treatment chambers assembled to form a single unit and their associated pressure locks.
  • the number of yarn treatment chambers e.g. as steam heated pressure pipes, is not confined to a fixed number and can be varied as required by a given spinning operation.
  • the drive means for the throttle members are preferably arranged in such a way that for adjacent pressure locks they lie alternately above the sealing plate 27 and below the sealing plate 28.
  • the pneumatic cylinders are fixed alternately to the front and to the rear end plates 35 of the pressure locking means (cf. FIGS. 4 and 5).
  • the rotatably mounted cylinders 25, near the point where, they penetrate their associated flow duct 22, have a cylindrical recess 40 equivalent in depth to the flow duct 22 so that where the throttle members are positioned as shown in FIGS. 7 and 9, the full cross-section of the flow duct 22 is opened and the throttle effect of the labyrinth system is eliminated.
  • This open" position provides a large straight path through each yarn treating position for threading or rethreading when the pressure and introduction of vaporous heating medium to the yarn treatment chamber is temporarily in an of position, e.g., in response to yarn breakage.
  • the arcuate recess 40 is adjoined at an acute angle by a narrower slot-like recess 41 which is equivalent in depth to the working canal or channel opening 42 provided at the common junction between the two recesses.
  • This provides a small square or rectangular opening 42 when the valve cylinder has been turned to a fully closed" or operating position (see FIGS. 6 and 8).
  • This opening is not more than about 2 to 3 times the cross-section of the yarn and offers only a slight guiding contact to the yarn while fully throttling the flow of vapors.
  • the apparatus according to the invention for treating a group of continuous filamentary bundles, yarns or tows which, in its preferred form, has one pressure lock with variable throttle cross-sections at either end, can also be provided in a mechanically more simple construction with pressure locks in which more or less fixed labyrinths restrict outflow of the treatment medium as shown in FIGS. 16 and 17.
  • the pressure lock generally denoted by the reference numeral 50 is made up of the lower casing member 51 with the yarn guide duct 52 machined into it, being connected to the flange 53 of the yarn treatment chamber or to the heating box surrounding it, and of the detachable upper casing member 54.
  • the upper part 54 is connected to the lower part 51 by a stirrup fastening means 55 which is rotatably locked or secured in position by the bolt 56.
  • a stirrup fastening means 55 which is rotatably locked or secured in position by the bolt 56.
  • the upper part 54 of the pressure lock is pressed firmly onto the lower part 51 by means of the setscrew 57 and sealed off there.
  • this setscrew is loosened, the stirrup fastening pivoted to one side and the upper part 51 of the pressure lock removed so that, by means of an injector mounted at the beginning of the yarn guide duct 52, the yarn can be pulled through the entire arrangement and inserted into the labyrinth and the yarn guide 58.
  • the labyrinth shown in FIGS. 16 and 17 is assembled in such a way that several small tubes 59 and 60 are provided one behind the other perpendicularly of the yarn guide duct 52, the tubes 59 which are inserted into the removable upper part 54 of the pressure lock, being shorter than the tubes 60, not quite extending to the middle of the yarn guide duct 52.
  • the tubes 60 are also inserted, for example cemented, into the upper part 54 of the pressure lock. However, they are longer and extend into the lower part 51 of the pressure lock where they are guided into corresponding bores.
  • the walls of the tube 60 in the lower region 61 which makes up about one-third of the overall length of the tube 60, the walls of the tube 60, as shown in FIG.
  • the bore 64 lying closest to the yarn guide duct 52 and hence closest to the yarn treatment chamber is adjoined by the condensation pipe 65 comprising a condensation outlet (not shown), for example a thermally-operated condensation outlet.
  • the apparatus according to the invention as described in the foregoing specification has proved to be particularly suitable for the heat treatment of spun tows or yarns, in particular those of synthetic fiber-forming thermoplastic polymers.
  • spun tows or yarns in particular those of synthetic fiber-forming thermoplastic polymers.
  • the apparatus of the invention is most useful in combination with conventional spinning and drawing means where rapid heating of a large group of separately processed bundles or yarns is essential.
  • Apparatus for the continuous heat treatment of a plurality of filamentary bundles as a yarn or the like with a vaporous heating medium at temperatures above 100C comprising:
  • each chamber being substantially in the form of a straight pressure pipe over most of its length, all of said pipes being arranged at lateral intervals apart from one another on substantially parallel axes;
  • two flow duct members including pressure locking means for each treatment chamber, one duct memher being arranged at the inlet end of said chamber and the other at the outlet end thereof so that each is in direct fluid connection with the treatment chamber,
  • said pressure locking means comprising a plurality of rotatably mounted valve cylinders which penetrate at about right angles into the flow duct path while being arranged in a row one behind the other on parallel axes of rotation lying in about the same plane, each valve cylinder being variably recessed at the point of intersection with the flow duct to alter the cross-section of the flow path upon rotation of the valve cylinder.
  • each of said valve cylinders has a first arcuate or partially cylindrical recess on one side thereof with a depth corresponding approximately to the diameter of the flow duct path together with an adjoining narrower slot recess extending at an acute angle from said first recess from a point spaced sufficiently inwardly from the outer circumference of the valve cylinder to provide a small working opening at the common junction of the two recesses.
  • each of said valve cylinders has a diameter which is approximately twice the diameter of the flow duct path.
  • Apparatus as claimed in claim 1 including at least one turbulence chamber which is arranged along the flow duct path between two adjacent valve cylinders.
  • each turbulence chamber is formed by a bore extending substantially perpendicularly and at least partly intersecting the flow duct path.
  • Apparatus as claimed in claim 9 having a plurality of said bores forming turbulence chambers alternately between adjacent valve cylinders, said turbulence chambers being substantially equal in diameter to said valve cylinders and said turbulence chambers and said valve cylinders being arranged with their axes lying in separate parallel planes offset and symmetrical to the axis of the flow duct path.
  • Apparatus as claimed in Claim 1 including means to simultaneously adjust the valve cylinders of said pressure locking means between a closed operating position and an open threading position.
  • Apparatus as claimed in claim 1 including power transmitting means to synchronously adjust the valve cylinders of each pressure locking means between a closed operating position and an open threading position.
  • Apparatus as claimed in claim 13 including a jet injector means mounted at; the outlet end of each elongated treatment chamber for rethreading a filamentary bundle through said chamber and its associated flow duct members.
  • Apparatus as claimed in claim 1 wherein said elongated treatment chambers as substantially straight pressure pipes are mounted within a closed heating box equipped with feed means to introduce said vaporous heating medium into the box, thereby externally heating said pipes at the same temperature as in the treatment chambers.
  • Apparatus as claimed in claim 14 wherein said feed means for said heating box is in fluid communication with said feed pipe means for each treatment chamber through a common vapor reservoir, and an individual shut-off valve is separately connected in the feed pipe for each treatment chamber.
  • Apparatus as claimed in claim 1 including a plurality of synchronously-operable, valve cylinder means partly intersecting the flow duct path of each pressure locking means, each of said cylinder means being displaceable between a closed operating position and an open threading position, and a plurality of cylindrical bores arranged between adjacent valve cylinder means as intermediate turbulence chambers along and partly intersecting the flow duct path.
  • an apparatus for the continuous heat treatment of a running filamentary material with a vaporous heating medium at an elevated temperature said apparatus including a substantially enclosed elongated heat treatment chamber in the form of a substantially straight pressure pipe having feed means for introducing the vaporous heating medium into the pipe and an inlet and outlet at each end of the pipe to receive the running filamentary material, the improvement which comprises:
  • a flow duct member arranged in direct fluid connection with the treatment chamber at said inlet end and at said outlet end of said pipe;
  • a pressure locking means in each flow duct member including at least one cylindrical valve throttling element rotatably mounted in the flow duct path for adjustable rotation between a closed operating position of minimum throttling cross-section effective to prevent leakage flow of the vaporous heating medium from said pipe and an open threading position of maximum throttling cross-section effective to permit rapid introduction of said filamentary material to be treated.
  • An apparatus as claimed in Claim 17 including means to simultaneously rotatably adjust the valve throttling elements at each end of said pipe between said closed operating position and said open threading position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US00246326A 1971-05-04 1972-04-21 Apparatus for the continuous heat treatment of runing yarns Expired - Lifetime US3778909A (en)

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Application Number Priority Date Filing Date Title
DE19712121843 DE2121843C3 (de) 1971-05-04 Vorrichtung zur kontinuierlichen Wärmebehandlung einer Schar von synthetischen Fäden, Endlosgarnen o.dgl

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US (1) US3778909A (enrdf_load_stackoverflow)
JP (1) JPS5535492B1 (enrdf_load_stackoverflow)
FR (1) FR2135607B1 (enrdf_load_stackoverflow)
GB (1) GB1345453A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581909A (en) * 1992-08-05 1996-12-10 Toray Industries, Inc. Heat treatment apparatus for yarn
CN116442428A (zh) * 2023-03-28 2023-07-18 佛山市色邦新材料有限公司 一种色母粒脱水干燥装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55116989U (enrdf_load_stackoverflow) * 1979-02-13 1980-08-18

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005580A (en) * 1934-09-07 1935-06-18 B F Sturtevant Company Inc Drying apparatus
US2317448A (en) * 1938-01-05 1943-04-27 Celanese Corp Apparatus for treatment of artificial materials
US2380422A (en) * 1943-01-09 1945-07-31 Western Electric Co Strand coating apparatus
US2865112A (en) * 1955-11-16 1958-12-23 Dow Chemical Co Sealing orifice for steam tubes and the like
US3534483A (en) * 1968-07-10 1970-10-20 Nobuhisa Kodaira Apparatus for heat-setting synthetic fibre yarns

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2005580A (en) * 1934-09-07 1935-06-18 B F Sturtevant Company Inc Drying apparatus
US2317448A (en) * 1938-01-05 1943-04-27 Celanese Corp Apparatus for treatment of artificial materials
US2380422A (en) * 1943-01-09 1945-07-31 Western Electric Co Strand coating apparatus
US2865112A (en) * 1955-11-16 1958-12-23 Dow Chemical Co Sealing orifice for steam tubes and the like
US3534483A (en) * 1968-07-10 1970-10-20 Nobuhisa Kodaira Apparatus for heat-setting synthetic fibre yarns

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581909A (en) * 1992-08-05 1996-12-10 Toray Industries, Inc. Heat treatment apparatus for yarn
CN116442428A (zh) * 2023-03-28 2023-07-18 佛山市色邦新材料有限公司 一种色母粒脱水干燥装置
CN116442428B (zh) * 2023-03-28 2023-11-24 佛山市色邦新材料有限公司 一种色母粒脱水干燥装置

Also Published As

Publication number Publication date
JPS5535492B1 (enrdf_load_stackoverflow) 1980-09-13
DE2121843B2 (de) 1977-04-14
FR2135607A1 (enrdf_load_stackoverflow) 1972-12-22
GB1345453A (en) 1974-01-30
DE2121843A1 (de) 1972-11-16
FR2135607B1 (enrdf_load_stackoverflow) 1973-07-13

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