EP0460000B1 - Dispositif et procede de chargement pneumatique de puits de remplissage - Google Patents

Dispositif et procede de chargement pneumatique de puits de remplissage Download PDF

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Publication number
EP0460000B1
EP0460000B1 EP90902778A EP90902778A EP0460000B1 EP 0460000 B1 EP0460000 B1 EP 0460000B1 EP 90902778 A EP90902778 A EP 90902778A EP 90902778 A EP90902778 A EP 90902778A EP 0460000 B1 EP0460000 B1 EP 0460000B1
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EP
European Patent Office
Prior art keywords
air
blow
transport
collecting chamber
shaft
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Expired - Lifetime
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EP90902778A
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German (de)
English (en)
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EP0460000A1 (fr
Inventor
Akiva Pinto
Günter Lucassen
Ulrich Schmidt
Ulrich Hartmann
Winfried Heuermann
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Hergeth Hollingsworth GmbH
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Hergeth Hollingsworth GmbH
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Priority claimed from DE19893904878 external-priority patent/DE3904878A1/de
Priority claimed from DE19893904853 external-priority patent/DE3904853A1/de
Application filed by Hergeth Hollingsworth GmbH filed Critical Hergeth Hollingsworth GmbH
Publication of EP0460000A1 publication Critical patent/EP0460000A1/fr
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Publication of EP0460000B1 publication Critical patent/EP0460000B1/fr
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    • 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

Definitions

  • Devices of this type are required, for example, for cards and cards, in order to supply the machines with a material mat that is as uniform as possible.
  • the fibers are transported in a fiber / transport air mixture in pipelines and filled into the filling shafts assigned to the textile machines by deflecting the transport air flow.
  • the fiber material When supplying fiber material to a feed shaft, it is important that the fiber material is distributed uniformly over the width of the fiber shaft, thrown off by the pneumatic feed line, and the fiber material in the feed shaft itself over the width of the feed shaft and also over the depth thereof undergoes even stratification.
  • the transport air of the pneumatic feed is generally discharged on a wall surface of the feed shaft, for which purpose the feed shaft is permeable on a longitudinal wall or has corresponding passages.
  • the fiber material gets stuck to the air-permeable wall through which the transport air is to escape, to a greater or lesser extent, thereby hindering the release of the transport air. This has an adverse effect on the density of the filling of the feed shaft. It is up to chance how the flakes are distributed in the feed shaft.
  • a filling shaft is arranged below the pipeline, which is separated from an air collection space by an air-permeable partition.
  • the air collection space has an opening through which the transport air separated from the fiber material on the intermediate wall can be fed to an exhaust air line.
  • the opening can be varied in its passage cross-section via a pivotable flap.
  • a pair of rollers is arranged which feeds the fiber material from the filling shaft to the subsequent machine.
  • the opening at the upper end of the air collecting space which opening and which can be blocked, is used to control the supply of fiber material from the pipeline into the filling shaft by the amount of the transport air flowing out.
  • the opening is closed, at least theoretically no more fiber material can fall into the filling shaft, since the transport air flow is not deflected into the filling shaft because of the pressure-tight closure of the air collecting space and the filling shaft.
  • EP-A-0 176 668 is about the automatic regulation and control of the transport medium for the fiber material in the filling shaft. This happens on the one hand in such a way that the locking member is designed as a flap.
  • the flap is equipped with a weight which automatically adjusts the position of the flap depending on the air flow in the filling shaft.
  • the control element here is the air flow, which keeps the flap under weight more or less open or closes when the air flow drops to zero.
  • the mechanical, automatic control results from the fact that the torque exerted by the flap forms a compensating resistance moment for the air flow flowing through the shaft and the chamber. When a card is parked, the supply of additional flake material is prevented.
  • the one with a spring or a weight Equipped flap for removing the transport air is influenced by the air conditions in the feed shaft. This is all the more true if the flap can be adjusted by means of a control arrangement for the selectability of the air resistances, depending on the position of the take-off rollers in the feed shaft.
  • a reqler is provided which actuates a drive through which the locking plate can be pivoted about its axis.
  • shut-off devices of the filling chute arrangement are therefore not moved arbitrarily, but the movement is dependent on the air flow or indirectly on the density or the thickness of the fiber material located between the take-off rollers.
  • the invention has for its object to provide a device of the type mentioned, in which the greatest possible homogenization of the fiber material distribution over the width of the device.
  • Another object is to design and design a feed shaft with a permeable wall surface for discharging the transport air in such a way that the fiber material is piled up directly in the feed shaft with a substantially uniform density over the width of the shaft without a compulsory control device.
  • a device for pneumatic feeding a filling shaft and the like with fiber material in flake form, such as cotton, synthetic fiber material and the like, in which the Fibrous material is supplied by means of transport air via a transport duct, with an air collecting space which is separated from the filling shaft connected to the transport duct by an air-permeable intermediate wall, the air collecting space having a blow-off opening provided with a closing element for discharging the transport air flow, provided that the closing element of the blow-off opening can be opened and closed arbitrarily during the pneumatic feeding process, so that a pulsating flow of the transport air flow is generated.
  • the invention relates essentially to an arbitrary control on and off when removing the transport air from the air collection space, without a control program being directly or indirectly effective. It was recognized that an arbitrary locking and unlocking in the discharge of the transport air in any change causes normal air conditions in the feed or filling shaft by itself. Any malfunctions in the stacking of the fiber material in the shaft are remedied automatically by the opening and closing of the transport air as it exits the air collection space, and the faster the change in closing and opening is carried out when the transport air exits. The idea of the invention thus lies in the arbitrariness of the opening and closing of the blocking organ in question.
  • a distribution of the supplied fiber material over the width of the shaft can be achieved with an effective equalization of the fiber density in the shaft. It an equalization of the distribution of the fiber material over the width of the shaft, at least roughly, is achieved, namely directly in the shaft itself.
  • the presence of a special control device depending on measuring points on the fleece is not necessary.
  • the effect of the air flow not only serves to ensure the uniformity of the layering of the fiber flakes across the width of the filling shaft, but is also used for compression directly without the aid of additional control devices. It is a control of the removal of the transport air from the air collection space without the need to use a program.
  • the housing forming the closed air collecting space can be divided by a vertical wall or the like.
  • This partial housing is provided with a blow-off opening containing a closing element for the transport air.
  • the closing members on the two partial housings are advantageously mutually openable and closable. In this way you get a certain pumping effect, and only by the jumping distribution of the air flows in the shaft.
  • the housing forming the closed air collecting space can be divided by vertical walls into a predetermined number of chambers, each chamber being provided with a blow-off opening containing the closing element.
  • a predetermined time control for the closing members need not be carried out. It is sufficient that the alternation of closing and opening across the width of the shaft is carried out without a program.
  • the fiber material held on the air-permeable intermediate wall falls downward from the intermediate wall, so that normal air conditions can be restored.
  • the irregularity of the opening and closing of the closing elements leads to the unexpected result that the fiber material reaches the layering evenly across the width and depth of the shaft without disturbances. This also results in an essentially uniform compression of the fiber material in the feed or filling shaft.
  • the fiber flakes in the filling shaft are compressed to a high degree in the upper region of the filling shaft by the transport air stream flowing through them and in combination with a pulsating vibration in the filling shaft with respect to their filling level over the width of the
  • the device is evened out in such a way that the fiber mat fed to the downstream machine at the lower outlet of the filling shaft has a high degree of uniformity in fiber density over its width and length.
  • the alternating closing and opening of the blow-off opening in the air collection space leads to a pulsation which also prevents the fibers from adhering to the air-permeable intermediate wall and thus preventing the intermediate wall from becoming clogged.
  • the air flowing into the air collection space is suddenly prevented from escaping through the blow-off opening, so that a pressure build-up arises in the air collection space, which is also transmitted through the intermediate wall into the filling shaft.
  • the compressed air flow stops the compression effect in the upper part, which is closed on all sides of the filling shaft is interrupted for a short time, which, supported by the pressure build-up in the air collecting space and filling shaft, results in a short lifting of the fiber flake column in the filling shaft. In this way, compaction and pulsating vibrations are alternately produced, which bring about an equalization of the fiber material column over the entire width of the device.
  • a major advantage of the device according to the invention is that it has a simple, inexpensive to manufacture structure, which also ensures low susceptibility to failure.
  • the air collecting space is divided into chambers vertically and orthogonally to the filling shaft with at least one air-impermeable partition wall and that at least one shut-off blow-off opening is arranged at the lower end of the chambers for each chamber.
  • the subdivision of the air collection space into chambers has the advantage, for example, that when the respective blow-off openings are shut off, pressure equalization cannot take place immediately over the entire width of the air collection space and the filling shaft, as a result of which the pulsating vibration is intensified.
  • blow-off openings are arranged on the side of the chambers.
  • the lateral arrangement of the blow-off opening enables the connection of suction channels with which the transport air can be fed to the card suction, for example, without great design effort.
  • the arrangement of the blow-off openings in the bottom of the air-collecting space divided into chambers has the advantage that the transport air flow is only interrupted at the lower end of the filling shaft.
  • a control overlaps the alternating closing and opening phases of the blow-off openings.
  • the overlapping control has the effect that for a short time no transport air flow is blown out of the chambers of the air collection space, as a result of which an increased pressure build-up and thus an increased pumping effect is generated.
  • the partition can consist of a mesh screen. Due to the strong pumping effect from the air collecting space, the fibers advantageously do not get caught in the intermediate wall even if a mesh screen is used as the intermediate wall.
  • the wall of the filling shaft opposite the air-permeable intermediate wall is elastically mounted and can be moved in the horizontal direction transversely to the filling shaft.
  • FIGS. 1 and 2 there is a transport channel 10 above the feed or filling shaft 2, through which the fiber material is conveyed pneumatically into the shaft 2. Extraction rollers 18a and 18b can be arranged at the lower end of the shaft 2.
  • the one wall of the shaft 2 is wholly or partly with a permeable intermediate wall 9 provided which is perforated or otherwise designed to be permeable to air.
  • a housing 8 is provided, which serves as an air collecting space 1 for the transport air to be removed.
  • nozzle 7 On the housing 8 there is a nozzle 7 with a blow-off opening 6 for the exit and for the discharge of the transport air.
  • This blow-off opening 6 is provided with a closing member 15.
  • This can consist of a slide, a valve, a flap or the like.
  • a slide 13 is shown, which can be moved back and forth by a piston-cylinder unit 14, so that the blow-off opening 6 is closed when the slide is advanced and the blow-off opening 6 is open when the slide 13 is retracted.
  • the closing member 15 blocks the blow-off opening 6, a tendency of the fiber material to adhere to the permeable intermediate wall 9 is eliminated, and the fiber material is layered evenly in the shaft 2 by means of the transport air flow. This applies both to a natural discharge of the transport air and with the support of an induced draft or the like.
  • a constant opening and closing of the blow-off opening 6 results in a pulsating effect of the air flow of the transport air in the shaft. Disruptive influences when the fiber flakes are evenly distributed and deposited in the shaft are avoided from the outset. A natural uniformity in the distribution of the fiber flakes in the shaft is achieved.
  • the housing 8 'placed on the intermediate wall 9 is divided by a vertical partition 3, so that each closed housing part 8a and 8b is assigned a separate blow-off opening 6a or 6b.
  • These blow-off openings 6a and 6b for the transport air are provided with separate closing elements 15a and 15b, each locking element being assigned an independent drive device 14a or 14b.
  • the closing members 15a and 15b can be actuated with an irregular cycle. The disturbances in the shaft which otherwise exist when the transport air is removed are avoided.
  • the closing members on the partial housings 8a, 8b are advantageously mutually openable and closable. This results in a certain pumping effect in the air flow to be discharged.
  • the air flow has a compressing effect on the fibrous material column. This changes from one area to the other, whereby one automatically uniform layering of the fiber material in the shaft, taking into account the compression effect.
  • the shaft is subdivided into an upper shaft 2a and a lower shaft 2b, the measure according to the invention being provided for the upper shaft 2a.
  • the housing 8 ′′ placed in front of the permeable intermediate wall 9 of the upper shaft 2a is divided, for example, into four partial housings 8c, 8d, 8e, 8f with chambers 4a, 4b, 4c, 4d.
  • Each sub-housing has a blow-off opening 6a, 6b, 6c, 6d for the transport air, each blow-off opening being provided with an automatically movable closing member 15a, 15b, 15c, 15d.
  • the closing members can be designed as slides and, as shown in Figures 1 to 3, receive independent drive devices.
  • the closing element can also be designed as a flap which can be moved perpendicular to the outlet surface of the discharge for the transport air. Simple valve designs can also be used for this.
  • the various locking elements can be moved up and down or even partially independently of the others. You can also follow a certain order, so that the closing members are moved one after the other or in any change on and off. This causes a constant change in the direction of the air flow of the transport air in the filling shaft 2, which supports the desired uniformity of the layering of the fiber flakes in the filling shaft.
  • measuring devices are superfluous and dispensable regarding the property of the emerging fleece in its width.
  • the front of the housing or the housing sections can also be transparent that the actuation of the closing elements can be carried out according to the point of view.
  • the size of the partial housing depends on the width of the filling shaft. It goes without saying that the arrangement of the housing instead of an upper shaft can also be arranged on a lower shaft or, if it is considered necessary, on the upper and lower shaft.
  • the device shown in FIG. 5 for loading a textile machine with fiber material has a horizontally running transport channel 10, via which fiber material is transported to several loading devices in a fiber / transport air mixture.
  • a filling shaft 2 projects vertically downward from the transport channel 10, into which at least part of the fiber / transport air mixture is deflected, as a result of which the filling shaft 2 is filled with fiber material.
  • the transport channel 10 has a rectangular cross-sectional shape. In combination with the present loading device, however, other cross-sectional shapes of the transport channel can also be used.
  • the filling shaft 2 is separated from an air collecting space 1 by means of an air-permeable partition 9, preferably made of wire mesh, which extends essentially over the entire width and height of the filling shaft 2.
  • the intermediate wall can have an air-impermeable region at the upper and / or at the lower end.
  • the fiber / transport air mixture is separated after the fibers in the upper section of the filling shaft 2 have been compressed, the transport air flow passing through the intermediate wall 9 into the air collection space 1.
  • the air collecting space 1 can be divided vertically and transversely to the intermediate wall 9 by an air-impermeable partition 3 or, in contrast to the illustration in FIG. 5.
  • the transport air flow separated from the fibers thus flows, as shown in the figures, into two separate chambers 4, 5 of the air collection space 1.
  • the partition is arranged in the middle between the side walls 11, 12, with another subdivision of the air collecting space 1, e.g. 1/3 to 2/3 is possible, for example, to even out the air distribution in the two chambers 4, 5 due to the flow conditions.
  • a blow-off opening 6 is provided for the respective side walls 11, 12 of the chambers 4, 5 and can be opened and closed abruptly.
  • a controllable piston-cylinder unit 14 is provided, which can suddenly release or close the blow-off openings 6 with a cover-like closure part 15. It is essential here that the chambers 4, 5 experience a sudden pressure relief through the release of the blow-off openings 6 or enable rapid pressure build-up when the blow-off openings 6 are closed.
  • the blow-off openings 6 are opened and closed almost without inertia using suitable devices.
  • the cross-sectional shapes of the blow-off openings 6 is not restricted to circular openings as in the exemplary embodiment in FIGS. 5 to 7.
  • blow-off openings 6 can also be provided, deviating from FIGS. 5 to 7, in the bottom 8 of the chambers 4, 5 and preferably there in the vicinity of the intermediate wall 9 in order to largely avoid a deflection of the transport air flow when opening or closing the blow-off openings 6.
  • the lower region of the intermediate wall 9 can have an air-impermeable strip in order to prevent the transport air flow penetrating into the filling shaft 2 from being immediately relieved via the lower opening of the filling shaft 2. Accordingly, the blow-off openings 6 can be arranged in the side walls at the level of the lower end of the air-permeable section of the intermediate wall 9.
  • Another possibility is to reduce the air collection space 1 and accordingly the air-permeable intermediate wall 9 relative to the height of the filling shaft, so that a filling shaft section protrudes downwards or upwards over the air collection space 1 at the upper and / or lower end.
  • a feed gap 17 which narrows in a funnel shape and again compresses the fiber material before it is fed to the following machine.
  • the following machine can be fed directly from the filling shaft 2.
  • the following machine can for example be an opening / cleaning machine or due to the high uniformity of the emerging Non-woven fabric can also be a card or a carding machine or also be another feed shaft.
  • a transport device in the form of a take-off roller 18 is provided which, together with the funnel-shaped feed nip, brings about an additional compression of the original fleece emerging.
  • blow-off openings 6 are alternately opened and closed in the respective chambers 4, 5, the piston / cylinder units 4 being controlled such that both blow-off openings 6 are closed for a short period of time.
  • the blow-off openings 6 are closed in the respective chambers, the transport air flow directed downward is no longer discharged through the blow-off openings, as a result of which a pressure build-up occurs in the lower part of the air collection space and the filling shaft.
  • the fiber material column located in the filling shaft 2 is relieved by the lack of compression by the transport air flow and briefly raised with the support of the pressure build-up, as a result of which the fibers in the filling shaft 2 are shaken rhythmically in accordance with the blocking and blow-off phases.
  • the closure controls for the blow-off openings 6 partially overlap at least with regard to the blocking phase, as a result of which a pressure build-up occurs in both chambers 4 and 5, the rear wall 19 of the filling shaft 2 parallel to the intermediate wall 9 pulsates in accordance with the pressure build-up in the chambers 4 and 5 or in the Filling shaft 2 in the horizontal direction, so that an additional mechanical vibration effect is created by the vibrations of the rear wall.
  • the density of the emerging nonwoven fabric can be varied with the aid of the control for the opening and closing times of the blow-off openings, by varying the frequency of the vibration by appropriately controlling the closing mechanisms.
  • the overlap phases can also be varied.
  • the pulsation in the air collecting space and in the filling shaft has a self-cleaning effect for the intermediate wall 9, so that a mesh screen can also be used as the intermediate wall.
  • a mesh screen can be used for the intermediate wall 9 since the fibers cannot clog the mesh screen.
  • the closing device for the blow-off openings 6 can also be controlled with the aid of sensors.
  • the closing phase for a blow-off opening of a chamber could be initiated when a certain flow velocity in the chambers 4, 5 was reached and the opening phase could be initiated when a certain back pressure was reached or if it was determined that the back pressure had exceeded its maximum.

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

Abstract

Un dispositif d'alimentation en fibres de machines textiles comprend un canal horizontal de transport (10), un puits de remplissage (2) vertical qui descend à partir du canal de transport (10), une chambre collectrice d'air (3) séparée par une paroi intermédiaire (9) perméable à l'air du puits de remplissage (2) relié au canal de transport (10), pourvue d'un orifice d'évacuation fermable du courant d'air de transport, et un dispositif (18) de transport des fibres agencé à l'extrémité inférieure du puits de remplissage (2). Au moins un orifice d'évacuation (6) agencé à l'extrémité inférieure de la chambre collectrice d'air peut alternativement et brusquement bloquer et laisser passer le courant d'air de transport (7).

Claims (20)

  1. Dispositif de chargement pneumatique d'un puits de remplissage (2) et similaires en matière fibreuse sous forme de flocons, par exemple coton, matière fibreuse synthétique et similaires, dans lequel la matière fibreuse est amenée, à l'aide d'air de transport, par un canal de transport (10), comprenant un collecteur d'air (3), qui est séparé, par une paroi intermédiaire (9) perméable à l'air, du puit de remplissage (2) relié au canal de transport, le collecteur d'air (3) présentant une ouverture d'échappement (6, 6a-6d), pourvue d'un organe d'obturation, pour l'évacuation du courant d'air de transport, caractérisé en ce que l'organe d'obturation de l'ouverture d'échappement (6, 6a-6d) peut être ouvert et fermé à volonté pendant l'opération de chargement pneumatique, de manière à produire un courant et un fonctionnement pulsants du courant d'air de transport.
  2. Dispositif suivant la revendication 1, caractérisé en ce que le boîtier (8, 8', 8'') formant le collecteur d'air (1) fermé est subdivisé en chambres (4, 4a-4d, 5) par une cloison (3) verticale et que chaque boîtier partiel (8a-8f) est pourvu d'une ouverture d'échappement (6, 6a-6d) munie d'un organe d'obturation (15, 15a-15d).
  3. Dispositif suivant la revendication 2, caractérisé en ce que les ouvertures d'échappement (6, 6a-6d) des boîtiers partiels (8a-8f) peuvent être ouvertes et fermées réciproquement.
  4. Dispositif suivant l'une des revendications 1 à 3, caractérisé en ce que le boîtier (8', 8'') formant le collecteur (1) fermé est subdivisé par des parois verticales (3) en un nombre prédéterminé de chambres (4, 4a-4d, 5) et que chaque boîtier partiel est pourvu d'une ouverture d' échappement (6, 6a-6d), contenant un organe d'obturation (15, 15a- 15d), pour l'air de transport.
  5. Dispositif suivant l'une des revendications 1 à 4, caractérisé en ce que les ouvertures d'échappement (6a-6d) de plus de deux chambres (4a-4d, 4, 5) peuvent être ouvertes et fermées selon une cadence prédéterminée.
  6. Dispositif suivant la revendication 1, caractérisé en ce que l'ouverture d'échappement (6, 6a-6d) est disposée à l'extrêmité inférieure du collecteur d'air et que le niveau de remplissage en fibres est, en fonctionnement normal, réglable à une hauteur qui est supérieure au bord supérieur de la zone perméable à l'air de la paroi intermédiaire (9).
  7. Dispositif suivant la revendication 6, caractérisé en ce qu'il est prévu plusieurs d'échappement (6) distantes l'une de l'autre, dont les phases d'échappement et d'obturation sont commandées décalées l'une par rapport à l'autre.
  8. Dispositif suivant la revendication 6 ou 7, caractérisé en ce
    - que le collecteur d'air (1) est subdivisé verticalement et orthogonalement au puits de remplissage (2) en chambres (4, 5), avec au moins une cloison (3) imperméable à l'air, et
    - qu'il est prévu, pour chaque chambre (4, 5), au moins une ouverture d'échappement (6) obturable qui est disposée à l'extrémité inférieure des chambres (4, 5).
  9. Dispositif suivant les revendications 6 à 8, caractérisé en ce que les ouvertures d'échappement (6) sont disposées dans le fond des chambres (4, 5) qui s'étend à hauteur de l'extrémité inférieure du puits de remplissage (2).
  10. Dispositif suivant l'une des revendications 6 à 9, caractérisé en ce qu'une commande commande les phases d'obturation et d'échappement des ouvertures d'échappement (6) avec un chevauchement tel que, pendant une courte phase de chevauchement, toutes les ouvertures d'échappement (6) sont simultanément obturées.
  11. Dispositif suivant l'une des revendications 6 à 10, caractérisé en ce que la paroi du puits de remplissage (2) opposée à la paroi intermédiaire (9) perméable à l'air est montée de manière élastique et est mobile, dans le sens horizontal, transversalement au puits de remplissage (2).
  12. Dispositif suivant les revendications 6 à 11, caractérisé en ce que la paroi intermédiaire (9) consiste en un tamis à mailles.
  13. Dispositif suivant les revendications 6 à 12, caractérisé en ce que la paroi intermédiaire (9) présente, à l'extrémité supérieure et/ou inférieure, sur toute la largeur du puits de remplissage (2), une zone imperméable à l'air.
  14. Dispositif suivant les revendications 6 à 13, caractérisé en ce que le puits de remplissage (2) est, à l'extrémité supérieure et/ou inférieure, en saillie par rapport au collecteur d'air (1).
  15. Procédé de chargement de machines textiles en fibres
    - par la déviation d'un mélange de fibres/air de transport dans un puits de remplissage (2),
    - par la séparation de l'air de transport dans un puits de remplissage (2) pourvu d'une paroi intermédiaire (9) perméable à l'air,
    - par l'échappement de l'air de transport d'un collecteur d'air (3) disposé derrière la paroi intermédiaire (9), et
    - par l'amenée de la matière fibreuse de l'extrémité inférieure du puits de remplissage (2),
    caractérisé par
    - la compression par l'air de transport des matières fibreuses se trouvant dans le tronçon supérieur, fermé de tous les côtés, du puits de remplissage (2),
    - l'amenée à l'extrémité inférieure de collecteur d'air (3) du courant d'air de transport traversant les fibres et la zone perméable à l'air de la paroi intermédiaire (9),
    - l'échappement et l'arrêt alternés du courant d'air de transport à l'extrémité inférieure du collecteur d'air (3), et
    - la subdivision du collecteur d'air (3) en chambres (4a-4d, 5) séparées l'une de l'autre, dans lesquelles de l'air de transport est alternativement lâché et arrêté.
  16. Procédé suivant la revendication 15, caractérisé en ce qu'à au moins deux endroits disposés distants l'un de l'autre est alternativement lâché et arrêté de l'air de transport.
  17. Procédé suivant l'une des revendications 15 ou 16, caractérisé en ce que la cadence pour l'arrêt, respectivement l'échappement alterné est d'environ 2 à 5 secondes.
  18. Procédé suivant l'une des revendications 15 à 17, caractérisé en ce que la durée de chevauchement des phases d'obturation de chambres adjacentes est de moins d'1 seconde.
  19. Procédé suivant l'une des revendications 15 à 18, caractérisé en ce que l'arrêt du courant d'air de transport a lieu lorsqu'est atteinte une vitesse de circulation préétablie de l'air de transport à évacuer.
  20. Procédé suivant l'une des revendications 15 à 18, caractérisé en ce que l'échappement du courant d'air de transport a lieu lorsqu'est dépassé un maximum d'accumulation de pression après l'arrêt.
EP90902778A 1989-02-17 1990-02-14 Dispositif et procede de chargement pneumatique de puits de remplissage Expired - Lifetime EP0460000B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19893904878 DE3904878A1 (de) 1989-02-17 1989-02-17 Vorrichtung und verfahren zum beschicken einer textilmaschine mit fasern
DE3904878 1989-02-17
DE3904853 1989-02-17
DE19893904853 DE3904853A1 (de) 1989-02-17 1989-02-17 Vorrichtung zum pneumatischen speisen eines speiseschachtes u. dgl.

Publications (2)

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EP0460000A1 EP0460000A1 (fr) 1991-12-11
EP0460000B1 true EP0460000B1 (fr) 1993-07-28

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Family Applications (1)

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EP90902778A Expired - Lifetime EP0460000B1 (fr) 1989-02-17 1990-02-14 Dispositif et procede de chargement pneumatique de puits de remplissage

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US (1) US5337455A (fr)
EP (1) EP0460000B1 (fr)
JP (1) JPH04505187A (fr)
DE (1) DE59002114D1 (fr)
WO (1) WO1990009471A1 (fr)

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IT1276945B1 (it) * 1995-10-16 1997-11-03 Marzoli & C Spa Dispositivo e procedimento automatico per la sostituzione delle confezioni di teletta di alimentazione e per la preparazione e
EP0877106B1 (fr) * 1997-05-07 2002-06-26 Maschinenfabrik Rieter Ag Procédé pour emplir une cheminée d'alimentation de flocons et cheminée d'alimentation
DE19811143B4 (de) * 1998-03-14 2009-09-17 TRüTZSCHLER GMBH & CO. KG Vorrichtung zum Speisen und Wiegen (Wiegespeiser) von Textilfasern, insbesondere Baumwolle und Chemiefasern
US6038741A (en) * 1998-04-15 2000-03-21 Winn; William E. Uni-grid and multi-faceted cleaner for a cotton gin
DE19906148A1 (de) * 1999-02-13 2000-08-17 Truetzschler Gmbh & Co Kg Vorrichtung zum Füllen eines Flockenspeichers, insbesondere einer Karde, Krempel, Reinigers o. dgl. mit Faserflocken
US20080251187A1 (en) * 2003-10-17 2008-10-16 Enamul Haque Composite material with improved structural, acoustic and thermal properties
US20050266757A1 (en) * 2003-10-17 2005-12-01 Roekens Bertrand J Static free wet use chopped strands (WUCS) for use in a dry laid process
US7279059B2 (en) * 2004-12-28 2007-10-09 Owens Corning Intellectual Capital, Llc Polymer/WUCS mat for use in automotive applications
EP1851370A1 (fr) * 2005-02-21 2007-11-07 Maschinenfabrik Rieter Ag Alimentation en bourres et dispositif d'alimentation en bourres
US8652288B2 (en) * 2006-08-29 2014-02-18 Ocv Intellectual Capital, Llc Reinforced acoustical material having high strength, high modulus properties

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Also Published As

Publication number Publication date
JPH04505187A (ja) 1992-09-10
EP0460000A1 (fr) 1991-12-11
US5337455A (en) 1994-08-16
DE59002114D1 (de) 1993-09-02
WO1990009471A1 (fr) 1990-08-23

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