EP0715015A1 - Drier for stacked yarn packages in dyeing installations and the like - Google Patents
Drier for stacked yarn packages in dyeing installations and the like Download PDFInfo
- Publication number
- EP0715015A1 EP0715015A1 EP94830546A EP94830546A EP0715015A1 EP 0715015 A1 EP0715015 A1 EP 0715015A1 EP 94830546 A EP94830546 A EP 94830546A EP 94830546 A EP94830546 A EP 94830546A EP 0715015 A1 EP0715015 A1 EP 0715015A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- drier
- packages
- flow
- spindles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
- D06B5/12—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through materials of definite length
- D06B5/16—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through materials of definite length through yarns, threads or filaments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/006—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects the gas supply or exhaust being effected through hollow spaces or cores in the materials or objects, e.g. tubes, pipes, bottles
- F26B21/007—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects the gas supply or exhaust being effected through hollow spaces or cores in the materials or objects, e.g. tubes, pipes, bottles the objects being bobbin- or spool-like bodies
Definitions
- driers are known in which a plurality of packages are stacked coaxially via their centres on a permeable spindle; they are generally in a multi-spindle arrangement of handling trolleys which are introduced, with the packages to be dried, into the drying chamber; in this chamber there are means for producing a generally radial flow of air through the yarn material wound on the packages, and through the spindle, which is permeable. It is possible to provide successive cycles of alternating flow passing through the packages from the interior towards the exterior and from the exterior towards the interior.
- Drying occurs by introducing hot air under pressure generated by a fan situated outside the cell; the air, properly filtered and heated by a heat exchanger, is introduced into the packages in such a way as to cause it to pass from the interior towards the exterior and vice versa by diverting the flow of air using suitable diverting means.
- the air is fed into or sucked out of one of the ends of the or of each spindle.
- Figs. 1 and 2 show the air being introduced into a spindle from above (Fig. 1) and from below (Fig. 2) and the corresponding variation in the amount of air through the packages according to how far they are from the inlet end. The same applies during extraction.
- the different sizes of arrows fA and fB indicate the different amounts of airflow through the packages.
- connection means for moving the air to the two opposite ends of the spindle or spindles in order to bring about either the ingress or the egress of the air at both said ends, especially simultaneously. This gives the advantage of faster and more uniform drying of all the packages in a stack.
- 1 is the drying chamber accessible through an opening 1A through which a trolley 3 enters and exits.
- the trolley 3 comprises a plurality of tubular spindles 5 which are permeable; mounted on the spindles are the packages R of yarns to be dried, with their centres.
- Each trolley comprises a manifold 3A with a connection 3B at the front for connecting it up to the forced-airflow installation.
- the spindles 5 are in communication at the foot 5A with the manifold 3A and at the top are open to form further connections 5B.
- the chamber 1 can be closed by a door S.
- a forced-airflow unit Connected to the drying chamber 1 is a forced-airflow unit that comprises a fan 9 combined with a heat exchanger 10 for heating the air which is then blown into the drying chamber 1.
- the delivery duct 12 of the fan divides into two paths controlled respectively by a valve 14 and a valve 16.
- Valve 14 gives control over two blowing ducts, the lower duct 18 and the upper duct 20; the lower duct 18 ends with a connection 18A able to link up with the connection 3B on the trolley 3.
- the upper duct 20 leads to a vertically movable unit comprising a manifold 22 having connections 22A corresponding in position to the positions of the top connection ends 5B of the spindles 5, when the trolley 3 is introduced and positioned inside the drying chamber 1.
- the diverting valve 16 controls a duct connecting the unit 9, 10, 12 to the drying chamber 1.
- the two circuits controlled by the valves 14, 16 also have, downstream of the valves, a respective branch 18E and 24E for discharge 26 to the exterior; said branches 18E and 24E are controlled by respective valves 28 and 30.
- connection 3B is fitted to the connection 18A, while the manifold unit 22 is lowered to fit its connections 22A to the open top ends 5B of the spindles 5.
- Fig. 4 shows a mode in which there is flow from the inside of the spindles 5 through the coils of yarn of the packages R centrifugally towards the drying chamber 1; see also Fig. 6.
- Valves 14 and 30 are open and valves 16 and 28 are closed.
- the hot air under pressure is introduced into the two ducts 18 and 20 and thence into the two manifolds 3A and 22.
- the air then passes into each spindle 5 simultaneously from both the lower 5A and upper 5B ends.
- the manifold unit 22 When drying has been finished, the manifold unit 22 is raised again and, after the door S has been withdrawn, the trolley 3 with the dried packages is then taken out through the opening 1A. Another trolley is then introduced in order for the packages mounted on it to undergo the drying treatment.
- More or less uniform drying is also achieved by adopting alternate introduction through the connections 3A and 22A and by alternate extraction through said connections, but with a slower action.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The packages, stacked on multiple permeable spindles, are dried by a generally radial flow of air through the yarn wound on the packages, and also by successive cycles of alternating flow; connection means are provided for moving the air to both the opposite ends (5A, 5B) of the spindles, in order to bring about the simultaneous ingress or egress of the air at both ends.
Description
- For dyeing installations and the like, driers are known in which a plurality of packages are stacked coaxially via their centres on a permeable spindle; they are generally in a multi-spindle arrangement of handling trolleys which are introduced, with the packages to be dried, into the drying chamber; in this chamber there are means for producing a generally radial flow of air through the yarn material wound on the packages, and through the spindle, which is permeable. It is possible to provide successive cycles of alternating flow passing through the packages from the interior towards the exterior and from the exterior towards the interior. Drying occurs by introducing hot air under pressure generated by a fan situated outside the cell; the air, properly filtered and heated by a heat exchanger, is introduced into the packages in such a way as to cause it to pass from the interior towards the exterior and vice versa by diverting the flow of air using suitable diverting means. The air is fed into or sucked out of one of the ends of the or of each spindle. With this arrangement a difference is noted in the drying - or at least in the drying times - of the packages, depending on how far the latter are located, in the column of stacked packages, from the end at which the air is being introduced or extracted, due to the fall in pressure that occurs along the length of the spindle, the cross-section of which is not great; this can lead to differences between the characteristics of the yarns of the various packages. Figs. 1 and 2 show the air being introduced into a spindle from above (Fig. 1) and from below (Fig. 2) and the corresponding variation in the amount of air through the packages according to how far they are from the inlet end. The same applies during extraction. The different sizes of arrows fA and fB indicate the different amounts of airflow through the packages.
- The invention avoids or substantially reduces the above-indicated problem by the provision of connection means for moving the air to the two opposite ends of the spindle or spindles in order to bring about either the ingress or the egress of the air at both said ends, especially simultaneously. This gives the advantage of faster and more uniform drying of all the packages in a stack.
- The invention will be understood more clearly on examining the description and accompanying drawing, which latter shows a practical, illustrative, non-restricting example of the invention. In the drawing:
- Figs. 1 and 2 show conventional systems of operation as already discussed;
- Figs. 3 to 5 show in outline a drier according to the invention during loading or unloading and during drying with air being blown centrifugally and centripetally through the packages; and
- Fig. 6 shows the system of operation of said drier, to be compared with the systems of Figs. 1 and 2.
- In Figs. 3 to 5, 1 is the drying chamber accessible through an opening 1A through which a
trolley 3 enters and exits. Thetrolley 3 comprises a plurality oftubular spindles 5 which are permeable; mounted on the spindles are the packages R of yarns to be dried, with their centres. Each trolley comprises amanifold 3A with aconnection 3B at the front for connecting it up to the forced-airflow installation. Thespindles 5 are in communication at thefoot 5A with themanifold 3A and at the top are open to formfurther connections 5B. The chamber 1 can be closed by a door S. - Connected to the drying chamber 1 is a forced-airflow unit that comprises a
fan 9 combined with aheat exchanger 10 for heating the air which is then blown into the drying chamber 1. Thedelivery duct 12 of the fan divides into two paths controlled respectively by avalve 14 and avalve 16. Valve 14 gives control over two blowing ducts, thelower duct 18 and theupper duct 20; thelower duct 18 ends with aconnection 18A able to link up with theconnection 3B on thetrolley 3. Theupper duct 20 leads to a vertically movable unit comprising amanifold 22 havingconnections 22A corresponding in position to the positions of the top connection ends 5B of thespindles 5, when thetrolley 3 is introduced and positioned inside the drying chamber 1. The divertingvalve 16 controls a duct connecting theunit valves respective branch discharge 26 to the exterior; saidbranches respective valves - When a
trolley 3 has been introduced into the drying chamber and placed in position for the drying operations, itsconnection 3B is fitted to theconnection 18A, while themanifold unit 22 is lowered to fit itsconnections 22A to theopen top ends 5B of thespindles 5. - Thus prepared, the drying system, connected up to the
fan 9 and to theheat exchanger 10 for heating the air, can be turned on. Two different operating modes are possible successively and cyclically as shown in Figs. 4 and 5. Fig. 4 shows a mode in which there is flow from the inside of thespindles 5 through the coils of yarn of the packages R centrifugally towards the drying chamber 1; see also Fig. 6.Valves valves ducts manifolds spindle 5 simultaneously from both the lower 5A and upper 5B ends. This produces a more or less uniform action of the air on all the packages R mounted on thespindles 5, precisely because of the dual supply from both ends of the spindles and hence the practically uniform pressure of air at the various levels of each spindle; as a result there is uniform pressure on packages in every position along the spindles; the arrows fA in Fig. 6 illustrate this mode, which is a decided improvement on that of Fig. 1 or Fig. 2. Exhausted air is discharged through theduct discharge 26. - Switching the path of the air by
opening valve 16 andvalve 28 whileclosing valve 14 andvalve 30 results in the flow of air shown in Fig. 5, the air being introduced into the drying chamber 1 while exhausted air can be carried away throughends spindles 5 and theducts spindles 5 andmanifolds spindles 5. This mode is equal to that shown in Fig. 6 with the arrows reversed. - When drying has been finished, the
manifold unit 22 is raised again and, after the door S has been withdrawn, thetrolley 3 with the dried packages is then taken out through the opening 1A. Another trolley is then introduced in order for the packages mounted on it to undergo the drying treatment. - It will be clear that this arrangement provides more or less uniform drying and also faster drying owing to the improved flow brought about by feeding the air in and exhausting it through both
ends spindles 5. - More or less uniform drying is also achieved by adopting alternate introduction through the
connections - It will be understood that the drawing shows only an illustrative embodiment purely by way of a practical demonstration of the invention, it being possible for the invention to vary as regards shapes and arrangements without thereby departing from the scope of the concept underlying the invention. The presence of any reference numerals in the accompanying claims is purely in order to facilitate the reading of the claims with reference to the description and to the drawing, and does not limit the scope of protection represented by the claims.
Claims (4)
- Drier for yarn packages in dyeing installations and the like, in which a plurality of packages are stacked coaxially via their centres on a permeable spindle, generally in a multi-spindle arrangement, means being provided for producing a generally radial flow of air through the yarn wound on the packages, and also with successive cycles of alternating flow, that is centripetal and centrifugal flow, the drier being characterized in that it comprises connection means (3A, 22) for moving the air to both the opposite ends (5A, 5B) of the or of each spindle (5), in order to bring about either the ingress or the egress of the air at both said ends.
- Drier according to Claim 1, characterized in that the ingress or the egress of the air is produced simultaneously at both said ends.
- Drier according to Claim 1 or 2, comprising a drying chamber (1) provided with a forced-flow unit (9, 10, 26) which also heats up the air in the chamber and discharges the exhausted air, in a reversible circuit, and package-supporting trolleys (3) with one or more permeable spindles (5), the drier being characterized in that said spindle (5) or each of said spindles (5) is connected during operation to a first lower manifold (3A) that can be connected up to the forced-flow system, and to a second upper manifold (22) that can be moved towards and away from the package-supporting spindles (5) of the trolley (3) extending in the working position inside the box, said second auxiliary manifold also being connected to the forced-flow and switching system.
- Drier for drying stacked yarn packages in dyeing installations and the like; the whole being as described above and illustrated by way of example in the accompanying drawing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94830546A EP0715015A1 (en) | 1994-11-24 | 1994-11-24 | Drier for stacked yarn packages in dyeing installations and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94830546A EP0715015A1 (en) | 1994-11-24 | 1994-11-24 | Drier for stacked yarn packages in dyeing installations and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0715015A1 true EP0715015A1 (en) | 1996-06-05 |
Family
ID=8218581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94830546A Withdrawn EP0715015A1 (en) | 1994-11-24 | 1994-11-24 | Drier for stacked yarn packages in dyeing installations and the like |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0715015A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006037796A1 (en) * | 2004-10-08 | 2006-04-13 | Patrizio Grando | Dryer for yarns wound on reels. |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1878776A (en) * | 1929-10-29 | 1932-09-20 | Holt Lafayette | Beam for supporting yarn packages |
GB586600A (en) * | 1944-06-30 | 1947-03-25 | Smith Drum & Company | Improvements in yarn drying apparatus |
GB655403A (en) * | 1947-09-18 | 1951-07-18 | Pluria Ab | Apparatus for drying materials in the form of granules, threads, or fibres |
DE1635211A1 (en) * | 1966-03-08 | 1971-06-09 | Jagri Gmbh Maschinen Und Appba | Device for drying wet-treated, especially dyed yarns and the like. |
DE2057344A1 (en) * | 1970-11-21 | 1972-05-25 | Thies Fa B | Yarn treatment vessel - with fluid circulation in two directions through the creel mounting rod |
DE2555974A1 (en) * | 1975-12-12 | 1977-06-23 | Jagri Mach & Apparatebau | Yarn bobbin dyeing appts. having upper support plate - with attached sleeves placed over bobbin support shafts for quick erection and dismantling of appts. |
FR2359234A1 (en) * | 1976-07-23 | 1978-02-17 | Ilai Srl | LINE DRYING APPARATUS, COMPLEMENTARY TO A THREAD DYING APPARATUS, ESPECIALLY IN COILS |
WO1989002002A1 (en) * | 1987-08-29 | 1989-03-09 | Gregor Gebald | Process and device for steaming cross-wound bobbins |
-
1994
- 1994-11-24 EP EP94830546A patent/EP0715015A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1878776A (en) * | 1929-10-29 | 1932-09-20 | Holt Lafayette | Beam for supporting yarn packages |
GB586600A (en) * | 1944-06-30 | 1947-03-25 | Smith Drum & Company | Improvements in yarn drying apparatus |
GB655403A (en) * | 1947-09-18 | 1951-07-18 | Pluria Ab | Apparatus for drying materials in the form of granules, threads, or fibres |
DE1635211A1 (en) * | 1966-03-08 | 1971-06-09 | Jagri Gmbh Maschinen Und Appba | Device for drying wet-treated, especially dyed yarns and the like. |
DE2057344A1 (en) * | 1970-11-21 | 1972-05-25 | Thies Fa B | Yarn treatment vessel - with fluid circulation in two directions through the creel mounting rod |
DE2555974A1 (en) * | 1975-12-12 | 1977-06-23 | Jagri Mach & Apparatebau | Yarn bobbin dyeing appts. having upper support plate - with attached sleeves placed over bobbin support shafts for quick erection and dismantling of appts. |
FR2359234A1 (en) * | 1976-07-23 | 1978-02-17 | Ilai Srl | LINE DRYING APPARATUS, COMPLEMENTARY TO A THREAD DYING APPARATUS, ESPECIALLY IN COILS |
WO1989002002A1 (en) * | 1987-08-29 | 1989-03-09 | Gregor Gebald | Process and device for steaming cross-wound bobbins |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006037796A1 (en) * | 2004-10-08 | 2006-04-13 | Patrizio Grando | Dryer for yarns wound on reels. |
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Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19951109 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE ES FR GB LI |
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17Q | First examination report despatched |
Effective date: 19971001 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Withdrawal date: 19980213 |