EP0175056B1 - Dispositif de transport pneumatique de flocons de fibres - Google Patents

Dispositif de transport pneumatique de flocons de fibres Download PDF

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Publication number
EP0175056B1
EP0175056B1 EP85106725A EP85106725A EP0175056B1 EP 0175056 B1 EP0175056 B1 EP 0175056B1 EP 85106725 A EP85106725 A EP 85106725A EP 85106725 A EP85106725 A EP 85106725A EP 0175056 B1 EP0175056 B1 EP 0175056B1
Authority
EP
European Patent Office
Prior art keywords
duct
control
chutes
equipment according
shafts
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.)
Expired
Application number
EP85106725A
Other languages
German (de)
English (en)
Other versions
EP0175056A1 (fr
Inventor
Paul Stäheli
Urs Stähli
Fritz Knabenhans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to AT85106725T priority Critical patent/ATE32918T1/de
Publication of EP0175056A1 publication Critical patent/EP0175056A1/fr
Application granted granted Critical
Publication of EP0175056B1 publication Critical patent/EP0175056B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/08—Air draught or like pneumatic arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87249—Multiple inlet with multiple outlet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87788—With valve or movable deflector at junction
    • Y10T137/87812—Pivoted valve or deflector

Definitions

  • the present invention relates to a pneumatic transport system for fiber flakes according to the preamble of claim 1.
  • German Offenlegungsschrift No. 1 685 613 shows a feeding device with a transport channel, the channel sections located between filling chutes continuously expanding from one chute to the next. This serves to slow down the transport air on the inlet side of the shafts and to accelerate it on the outlet side.
  • insert plates are provided at the inlet and outlet openings of the feed shafts, which are arranged perpendicular to the direction of flow of the transport air. Such an inserting of plates, which is necessary for changing the flow rate, is impractical in terms of handling.
  • the position of the plates perpendicular to the flow direction causes a strong swirling of the air and thus an increase in the drive energy required to generate the transport flow.
  • Swiss patent specification No. 370 680 shows an air duct in which, at the location of the filling shafts, deflection flaps are provided on the rear side (with respect to the direction of the air flow). These flaps are used to redirect the fiber flakes into the corresponding filling shaft. The air acceleration caused by these flaps only occurs on the rear side of the filling shafts and thus only after the fiber flakes have essentially already passed the shaft opening.
  • Claim 2 relates to a particularly advantageous embodiment of the invention.
  • fiber material of two different types is fed to a group of cards.
  • the number of cards in the group fed with fiber material of one type and the number of cards in the group fed with fiber material of the other type can be selected and varied as desired by adjusting the control members.
  • This embodiment thus enables increased flexibility of a system with regard to the fiber material allocation to its cards or shafts.
  • FIGS. 1 and 2 shows an elongated channel 1 of a constant, rectangular cross section, which is higher than it is wide. Through this, fiber flakes are transported in the direction of arrow 2 by means of a transport medium, for example air, which is moved by a blower 3 (only shown in FIG. 1).
  • a transport medium for example air
  • a blower 3 only shown in FIG. 1
  • Each shaft has at its lower end e.g. Feed rollers, by means of which the fiber material is fed to a carding machine. The feed rollers and cards are not shown in the figures.
  • further shafts can be provided above each shaft 4 to 9, the bottom surface of the channel 1 has an opening 11 adapted to the corresponding shaft.
  • Each of the filling chutes 4 to 9 has a rectangular cross section, the long sides of which are transverse to the longitudinal direction of the cards are parallel to the plane of the drawing and thus parallel to channel 1. There is therefore a so-called cross-feed.
  • Each control element 12 comprises a control plate 13 which is pivotably attached to a pivot axis 14 arranged perpendicular to the longitudinal direction of the channel 1 and which can be set and fixed in any pivot positions within the channel 1.
  • Each of the two control elements 12, which are located between adjacent shafts 4 to 9, is assigned to a shaft.
  • the control element on the left in the figures and thus also its control plate 13 is assigned to the shaft 6 and the control element 12 on the right in the figures or its control plate 13 is assigned to the shaft 7.
  • Each control plate 13 extends from its pivot axis 14 towards the shaft 4 to 9, to which it is assigned.
  • the pivot axes 14 be can be found on the bottom surface of the channel 1. In the open position of a control member 12 or a control plate 13, the latter is in its horizontal position lying on the bottom of the channel 1. In this position, the flow of the transport medium through channel 1 is practically unaffected.
  • a locking wall 15 is attached to the end of each control plate 13 facing away from the axis 14. This extends downwards from this end into the assigned shaft 4 to 9.
  • the locking walls 15 extend downward by such an amount that they remain immersed in their assigned shafts 4 to 9 in all swivel positions of the control plates 13. So that there is little clearance when the control plates 13 are pivoted about their axes 14 between the blocking walls 15 and the upper transverse edges 16 of the shafts 4 to 9, these walls 15 are advantageously curved, with their pivot axes 14 as centers of curvature, and are also the upper parts the filling shafts 4 to 9 adapted to the shape of the barrier walls, as shown in the drawing. This prevents fiber material from getting behind the barrier walls 15 and under the control plates 13.
  • each control element 12 has its own pivot axis 14, while in the example of FIG. 2 the control plates 13 located between two adjacent filling shafts 4 to 9 are pivotably attached to a common pivot axis 14.
  • control plate 13 The more a control plate 13 is pivoted upwards out of its horizontal position, the narrower the passage opening for the medium in the channel 1 at the location of its rear end facing away from the pivot axis 14 and the greater the flow rate of the medium at this point .
  • flake material precipitates and enters shafts 4 to 9.
  • the transport system shown has the advantage that it is easily possible to reverse the direction of the flock transport in the transport channel 1.
  • the channel 1 is closed at the point where the blower 3 is located or connected to a return line and a blower 17 shown in broken lines is provided at the other end. This moves the transport medium in the direction of the dashed arrow 18.
  • the plates 13 previously used for regulation are moved into their horizontal position and those control plates 13 which extend from their pivot axis 14 in the direction of flow of the medium according to arrow 18 are used.
  • the statements made above regarding the regulation of the speed of the transport medium apply analogously.
  • the provision of the control elements 12 according to the invention thus enables regulation of the fiber flakes to be deposited, i.e. regulation of the amount of flakes in each shaft regardless of the direction in which the flakes are transported in channel 1.
  • the use of the transport system is thus more versatile. No changes need to be made to channel 1 or other shafts 4 to 9. Only the control members 12 have to be set according to the conditions.
  • control members 12 are designed in such a way that they can additionally be optionally set in a closed position in which the channel 1 is blocked for the transport medium.
  • a closed position is obtained by bringing the edge of a control member 12 formed by the control plate 13 and the barrier wall 15 into contact with the top surface 19 of the channel 1. This is the case in FIG. 2 for the control members 12 located between the shafts 6 and 7.
  • the embodiment according to claim 2 thus allows the number of cards in a group to which fiber material of one type and the number of cards in this group to which fiber material of another type is to be chosen as desired. To carry out, only the control members 12 have to be set accordingly, which means an extremely simple process.
  • the bottom 20 of the channel 1 below the control elements 12 can be omitted entirely.
  • the pivot axes 14 are formed by waves carried by both side walls of the channel.
  • the channel 1 used had a width of 17 cm and a height of 40 cm. In one case, the total amount of transport air supplied was 0.44 m 3 / s (cubic meters per second). There were 6 shafts and they were supplied by means of a transport medium flowing in the shaft in only one direction. The positions of the control elements 12 shown in FIG. 1 do not correspond to those in the examinations.
  • the speed of the transport fluid i.e. the transport air should be greater than 2 m / s (meters per second) and less than 10 m / s, preferably greater than 3 m / s and less than 8 m / s. If the air speed is too low, the flakes start to roll with difficulty and if the air speed is too high they fly over the shafts.
  • the system according to the invention allows up to three shafts to be temporarily parked when there are a total of 6 loaded shafts.
  • the conditions begin to become unfavorable because the air speed is still open at the first, i.e. at the second last shaft (shaft 8) becomes too large.
  • the system according to the invention has the advantage of allowing approximately half of them to be stopped at the same time without the occurrence of disadvantageous consequences, without the need for control elements to be adjusted by readjustment.
  • the speeds of the transport air are still within the range between 2 m / s and 10 m / s. If the case arises that four of the six cards have to be shut down at the same time, this can be done by slightly reducing the amount of supply air. Such a reduction in the amount of feed air can e.g. by means of a regulation of the blower motor provided for this purpose or by changing a gear ratio in the transmission intended for this purpose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (10)

1. Installation de transport pneumatique de flocons de fibres pour alimenter une pluralité de cardes en alimentation transversale, au moyen d'un média de transport s'écoulant dans un canal, procédé dans lequel le canal possède une section constante et rectangulaire, à l'intérieur duquel des plaques de commande sont prévues pour diriger le média, et qui sont fixées d'une manière pivotante sur des axes de pivotement situés sur le fond du canal et disposés perpendiculairement au sens longitudinal du canal, plaques de commande qui reposent sur le fond du canal dans leurs positions ouvertes, caractérisée par le fait que deux organes de commande (12), comprenant chacun une plaque de commande (13) et une paroi d'arrêt (15), sont révus entre chaque paire de silos d'alimentation voisins (4 à 9), que chaque organe de commande (12) est adjoint à chacun des silos voisins (4 à 9), que ces deux organes de commande (12) qui possèdent, dans leur position ouverte, la même distance que celle qui sépare ces silos voisins (4 à 9), sont en images inversées par rapport à un plan perpendiculaire au canal (1), et que l'extrémité éloignée de l'axe de pivotement (14) de chaque plaque de commande (13) s'étend vers le silo (3 à 9) qui lui est adjoint, et qu'une paroi d'arrêt (15) est fixée à cette extrémité, paroi qui s'étend vers le bas en s'éloignant de cette extrémité et qui est plongée dans le silo (4 à 9) dans toutes les positions de pivotement de la plaque de commande (13), et que les plaques de commande (13) sont réglables et peuvent être maintenues dans des positions quelconques de pivotement.
2. Installation selon revendication 1, caractérisée par le fait que les organes de commande (12) peuvent être orientés au choix dans une position de fermeture, dans laquelle leurs parois d'arrêt (15) provoquent un blocage du média de transport dans le canal (1 ).
3. Installation selon revendication 1, caractérisée par le fait que les plaques de commande (13) qui se trouvent entre chaque paire de silos d'alimentation- voisins (4 à 9) sont fixées d'une manière oscillante sur un axe commun de pivotement (14).
4. Installation selon revendication 1, caractérisée par le fait que, par le choix du réglage des éléments de commande (12) et/ou par le choix de la quantité du média de transport qui est amené par le canal (1 la vitesse du média dans le canal (1), immédiatement avant chaque silo, soit plus grande que 2 m/s et moins grande que 10 /s, de préférence qu'elle soit plus grande que 3 m/s et moins grande que 8 m/s.
5. Installation selon revendication 1, caractérisée par le fait que le canal (1 ) possède une section dont la largeur et la hauteur s'élèvent à environ 17 cm, respectivement 40 cm.
6. Installation selon revendication 2, caractérisée par le fait que, à l'une de ses extrémités, le canal (1) est alimenté avec une matière fibreuse d'un certain type, et, à l'autre extrémité, le canal est alimenté avec une matière fibreuse d'un autre type, et que, entre le dernier silo (6) alimenté avec la matière fibreuse d'un certain type et le dernier silo (7) alimenté avec la matière fibreuse d'un autre type, se trouvent les organes de commande (12) qui sont dans leur position fermée.
7. Installation selon revendication 1, caractérisée par le fait que les parois d'arrêt (15) sont formées en arc de cercle ayant leurs axes de pivotement (14) comme centre de courbure.
8. Installation selon revendication 1, caractérisée par le fait que le canal (1) ne possède pas de fond de canal, sous les organes de commande (12).
9. Installation selon revendications 3 et 8, caractérisée par le fait que les axes de pivotement (14) sont formés par des arbres portés par les parois latérales du canal (1).
EP85106725A 1984-08-28 1985-05-31 Dispositif de transport pneumatique de flocons de fibres Expired EP0175056B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85106725T ATE32918T1 (de) 1984-08-28 1985-05-31 Pneumatische transportanlage fuer faserflocken.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH411984 1984-08-28
CH4119/84 1984-08-28

Publications (2)

Publication Number Publication Date
EP0175056A1 EP0175056A1 (fr) 1986-03-26
EP0175056B1 true EP0175056B1 (fr) 1988-03-09

Family

ID=4270165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106725A Expired EP0175056B1 (fr) 1984-08-28 1985-05-31 Dispositif de transport pneumatique de flocons de fibres

Country Status (6)

Country Link
US (1) US4648754A (fr)
EP (1) EP0175056B1 (fr)
JP (1) JPS6163723A (fr)
AT (1) ATE32918T1 (fr)
DE (1) DE3561827D1 (fr)
IN (1) IN165135B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769873A (en) * 1987-02-24 1988-09-13 Hergeth Hollingsworth Gmbh Textile fiber distribution ramp for fiber batt forming apparatus
US5143485A (en) * 1989-06-16 1992-09-01 Maschinenfabrik Rieter Ag Transport air control
US5040929A (en) * 1989-11-30 1991-08-20 Fuller Company Loading system for particulate materials
DE4131758A1 (de) * 1991-09-24 1993-03-25 Hollingsworth Gmbh Vorrichtung und verfahren zum pneumatischen speisen von mehreren speiseschaechten
DE102004060403A1 (de) * 2004-12-14 2006-07-06 Trützschler GmbH & Co KG Vorrichtung in der Spinnereivorbereitung zur Speisung einer Mehrzahl von Füllschächten, insbesondere Mischer, mit Fasermaterial
CH715911A1 (de) 2019-03-08 2020-09-15 Rieter Ag Maschf Vorrichtung zur Speisung von Karden.
DE102022116895A1 (de) * 2022-07-06 2024-01-11 Trützschler Group SE Vorrichtung zum pneumatischen Speisen von Fasermaterial zu einer Mehrzahl von Textilmaschinen und Verfahren unter Verwendung der Vorrichtung

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE373722C (de) * 1923-04-14 Rieter Joh Jacob & Cie Ag Baumwoll-Transportanlage
DE488332C (de) * 1928-02-11 1929-12-28 Paul Pollrich & Co G M B H Umschaltvorrichtung fuer Einrichtungen zum Foerdern von Fasergut mittels Druckluft
DE1099945B (de) * 1957-10-25 1961-02-16 Friedrich Tonne Dipl Ing Rohrpoststation, insbesondere fuer Wendebetrieb
US3029477A (en) * 1958-09-19 1962-04-17 Rieter Joh Jacob & Cie Ag Automatic carding plant
CH370680A (de) * 1959-06-01 1963-07-15 Rieter Ag Maschf Automatische Karderie
FR1439131A (fr) * 1965-04-03 1966-05-20 Installation pour l'alimentation en fibres d'un ensemble de machines textiles connectées en série le long d'une canalisation
US3326609A (en) * 1965-08-27 1967-06-20 Curlator Corp Fiber distributing system
DE1685613A1 (de) * 1966-04-22 1971-08-26 Tmm Research Ltd Pneumatische Speiseeinrichtung fuer eine Reihe von Karden
GB1178484A (en) * 1966-06-29 1970-01-21 Fiber Controls Corp Material Distributing System
US3649082A (en) * 1970-01-26 1972-03-14 Fiber Controls Corp Multiple source material distributing system
US3851924A (en) * 1970-09-25 1974-12-03 Crompton & Knowles Corp Fiber distribution apparatus
JPS5213748B2 (fr) * 1972-06-26 1977-04-16
JPS5126536A (ja) * 1974-08-30 1976-03-04 Canon Kk Kogakusochi
JPS525614A (en) * 1975-07-02 1977-01-17 Kawasaki Steel Corp Production process of steel of extremely low carbocontent

Also Published As

Publication number Publication date
IN165135B (fr) 1989-08-19
EP0175056A1 (fr) 1986-03-26
US4648754A (en) 1987-03-10
ATE32918T1 (de) 1988-03-15
DE3561827D1 (en) 1988-04-14
JPS6163723A (ja) 1986-04-01

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