EP1807562B1 - Dispositif de nettoyage servant a retirer des amas de fibres - Google Patents

Dispositif de nettoyage servant a retirer des amas de fibres Download PDF

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Publication number
EP1807562B1
EP1807562B1 EP05793976A EP05793976A EP1807562B1 EP 1807562 B1 EP1807562 B1 EP 1807562B1 EP 05793976 A EP05793976 A EP 05793976A EP 05793976 A EP05793976 A EP 05793976A EP 1807562 B1 EP1807562 B1 EP 1807562B1
Authority
EP
European Patent Office
Prior art keywords
air
cleaning device
stream
roller
channel
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.)
Ceased
Application number
EP05793976A
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German (de)
English (en)
Other versions
EP1807562A1 (fr
Inventor
Walter Schlepfer
Simon Heiniger
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
Publication of EP1807562A1 publication Critical patent/EP1807562A1/fr
Application granted granted Critical
Publication of EP1807562B1 publication Critical patent/EP1807562B1/fr
Ceased 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
    • D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
    • D01G9/08—Opening or cleaning fibres, e.g. scutching cotton by means of air draught arrangements
    • D01G9/10—Opening or cleaning fibres, e.g. scutching cotton by means of air draught arrangements using foraminous cylinders
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
    • D01G9/02—Opening or cleaning fibres, e.g. scutching cotton by agitation within a moving receptacle

Definitions

  • the invention relates to a cleaning device for fiber flakes, in particular of cotton, with a lying, populated with striking elements roller, on the upper side at one end of the roller an inlet and at the other end an outlet for the flow is arranged and between the inlet opening and the Outlet opening of the roll axis inclined guide plates limited transfer chambers are arranged for rotating around the roll axis flow.
  • At least one such cleaning device serves to dissolve the fiber flakes supplied in the conveying air flow and to remove impurities from it.
  • the fiber material is supplied together with transport air via the inlet at an axial end of the roller.
  • the air-fluff stream is transported in a spiral over the roller, whereby it is guided several times over the cleaning grate bars.
  • the flakes are thereby detected by the equipped with tines or impact elements drum, brought over the cleaning grate bars and gradually brought by means of steering chambers to the other axial end of the opening roller to promote by means of centrifugal force the dissolved fiber flakes through the outlet of the machine.
  • the flakes are knocked to some extent by the impact on the transfer chambers or steering chambers bounding walls, whereby impurities and dust are largely separated from the fiber material.
  • EP 381860 .
  • EP 379726 and EP447966 describe the cleaning device in detail.
  • EP 381860 describes the use of the baffles as a separation of the individual transfer chambers, whereby the dissolution of the flakes can be improved.
  • this document describes that in the cleaning device, the inlet is arranged so that the incoming through the inlet, the fiber flakes conveying air flow from top to bottom is approximately tangential to the opening roller, in such a way that the flow at the point where he impinges on the roll circumference, has the same direction of movement as the circumference of rotating roller. The impact pins of the roller should not move against the incoming flow of conveying air.
  • EP 379,726 describes the integration of an additional dedusting function in the cleaning device.
  • the laden with dust transport air can be partially removed by a suction through a screen plate in the region of the transfer chambers of the device.
  • EP 447966 describes an alternative solution for the dedusting function.
  • the suction is not located above the roller at the transfer chambers, but in front of the bar grate assembly. Seen in the conveying direction of the textile fibers, a substantially vertical air and dust permeable wall is arranged, which is part of a vacuum chamber to which a suction line is connected.
  • the cleaning device with the improvements is used today in many spinning mills. However, especially with larger flow rates cleaning does not work optimally.
  • the accompanying transport air in the flow obstructs the mechanical cleaning process.
  • the transport air prevents the optimum takeover of the flakes by the impact pins of the roller.
  • transport air enters the cleaner crossflows occur across the width of the roller, hindering the desired spiral flow.
  • thereby flock material passes without much cleaning in the outlet stream and the cleaning efficiency of the cleaning device is thereby reduced.
  • An additional disadvantage is the formation of turbulences by the superfluous transport air, especially by the cross flows. These eddies cause nits and damage to the fibers.
  • the present invention is therefore based on the object to provide a device which avoids the disadvantages mentioned above and in particular the mechanical cleaning of the cleaning device described above optimized.
  • an air separation device of the inlet opening of the Pre-arrange cleaning device the transport air can be largely separated and the fiber pulp stream is compressed. Essentially, only the fiber flakes get into the cleaner. This eliminates the influence of the transport air.
  • an air-permeable wall is arranged so that the air can escape.
  • the air separation device can be constructed in various ways, preferably the fiber flakes are not damaged and there are no whirling or excessive frictions in the device.
  • the air separation device may consist of an inlet which is arranged such that the air flake stream is fed to the cleaner via a screen plate, wherein the height of the channel is narrowed so that the excess transport air can escape through the screen plate and only the actual fiber flake stream the cleaner is supplied. Due to the constriction, the conveying air from the flake material is gently pressed and only very little air remains in the flake material.
  • the feed channel is shaped such that the flow of material in the air separation device passes by the screen plate.
  • the screen plate is preferably arranged in the transport direction of the material flow, so that the material flow flows over the surface of the screen.
  • the sieve is arranged entangled in the material flow, wherein the space behind the sieve larger and the space of the material flow in the flow direction is smaller, so that the air can escape better.
  • the screen plate is preferably constructed so that no fibers adhere or are damaged.
  • the screen plate is adjustable, so that the air separation can be adapted to the delivery volume, for example, a larger constriction at a smaller fiber volume flow. An adjustment for the air permeability of the wall could also be provided.
  • a slight negative pressure is present at the air outlet side of the air separation device.
  • this is mainly intended to dissipate the escaping air and do not aspirate the active air from the fiber fluff stream.
  • the inventive idea is the use of a mechanical air separation, for example by squeezing the air, so that the required suction capacity and the maintenance of the entire machine is minimal.
  • An additional advantage is that dedusting takes place at the same time.
  • the end of the inlet can in particular be designed so that the impact elements, such as percussion pins or tines, the roller engage directly in the fiber flake stream and take the flakes. Also, the air flow generated by the rapid rotation of the roll will positively affect the takeover of the fiber flakes.
  • the outlet channel is preferably arranged tangentially away from the roller such that the fiber flake material is spun by the roller in the discharge direction.
  • the actual further transport to the cleaner is taken over again by the pneumatic transport system, in particular a downstream fan can provide the required acceleration.
  • means are present in the outlet channel of the cleaner to be able to re-introduce air into the fiber flake stream. Among other things, this can be realized passively by the arrangement of false air slots in the outlet channel.
  • the pneumatic transport will then absorb the required amount of air when sucking the fiber pulp stream via these slots.
  • slots also adjustable flaps or a grate can be arranged. Preferably, these means are self-adjusting depending on the flow rate.
  • the measured values may additionally be used for controlling and controlling the device, for example for adjusting the amount of air to be separated in the air separation device, the passage rate of the cleaners, the setting angles of the cleaning grate bars or the volume of air returned at the outlet , By adjusting the amount of air separated, for example, the degree of purification and / or the amount of discharge and / or the amount of passage can be adjusted.
  • the cleaning intensity depends on the speed of the roller and is no longer adversely affected by the transport air.
  • the setting of the output quantity by adjusting the angle of the grate bars is determined only by the actual speed of the roller and the volume flow of the fibers.
  • FIG. 1 Based on FIG. 1 the cleaning machine is explained according to the prior art, see also EP 381860 .
  • EP 379726 and EP447966 where similar machines have been shown with more details and form an integral part of this application.
  • Fig. 1 cleaning machine shown has an opening roller 3, which is rotatably mounted in a housing about a horizontal axis and the circumference in the usual manner with striking elements 5, for example, percussion pins or prongs, is occupied.
  • the roller 3 is rotated in operation by a drive motor, not shown in the arrow direction.
  • Under the bottom of the roller 3 cleaning grate bars 4 are arranged.
  • the top of the roller 3 is covered at a distance from the roll circumference with a wall, of which a horizontal, middle section and two laterally adjoining thereto, are provided approximately 45 ° inclined side portions, in the following is an adjacent wall, substantially vertical wall 9 provided, which is dust-permeable.
  • the three wall sections are arranged like a terrace roof, which means in cross-section approximately like three sides of an isosceles trapezium, and each two of the wall sections close to each other one Angle ⁇ of about 135 °.
  • the wall 9 is an example of the additional dedusting function, in FIG FIG. 1 formed by means of a perforated plate with holes of about 1.5 mm in diameter, but it can also be formed by a sieve.
  • At one axial end of the roller 3 opens an inlet 1 from above, and at the other axial end above the roller 3 an outlet 2. Between the mouths of the inlet 1 and the outlet 2 are above the top of the roller 1 to the axis of the roller 1 at an angle Asked baffles 12 (in FIG. 2 only one baffle visible), which delimit the transfer chambers between the top of the roller 1 and the upper casing wall.
  • Asked baffles 12 in FIG. 2 only one baffle visible
  • the cleaning device is supplied to the textile fibers to be cleaned and dissolved in flake form in a conveying air flow through the inlet 1.
  • the conveying air with the fiber flakes substantially flows first around the underside of the rotating roller 3, then through the transfer chamber between the guide plates 12, which moves the air in the direction of the axis of the roller 3, then again around the underside of the roller, then through the Transfer chamber between the baffles and again around the bottom of the roller 1 to finally exit the machine through the outlet opening 10.
  • the flow rate moves substantially helically, which has been indicated by the arrow 7.
  • the coarser impurities such as shell parts, are deposited between the cleaning grate bars 4 and collected in the space below the grates, for example in a waste container 6 and periodically sucked by a suction device, not shown.
  • the outlet disposal may, for example, as shown in FIG. 1 , take place by means of a lock roller 6. As a result, the leaving space is separated from the transport air for the departure in the line. The exit excretion on the grate is not affected.
  • the air and dust permeable wall 9, the vacuum chamber and the suction line are used to separate these fine impurities from the conveying air flow, so that they can not escape at the end with the fibers through the outlet 2.
  • the suction line is connected to a vacuum source or suction device, not shown, which sucks dust-laden air through the wall 9 therethrough.
  • the size of the negative pressure generated in the vacuum chamber or the air flow sucked through the wall 9 is adjustable, for example by the fact that the vacuum source or suction device is adjustable, or in that in the suction line an adjustable throttle body, e.g. an adjustable throttle, is arranged.
  • the air flow is adjusted so that it is sufficient to suck the dust through the line, so that the dust does not settle on the bottom of the vacuum chamber.
  • viewing windows are provided on an outer wall.
  • the vacuum chamber at least one scavenging air inlet, through which scavenging air can be sucked into the vacuum chamber from the environment.
  • the scavenging air inlet also contains an adjustable throttling device, e.g. a throttle.
  • FIG. 2 and 3 show the cleaning device as previously described with an inlet 16 and outlet channel 17 according to the invention.
  • the inlet channel 16 contains an air separation device 18 according to the invention, consisting of an air-permeable wall 10, through which the conveying air flow can escape into the exhaust air duct 19. This wall is arranged parallel to the flow.
  • the end of this inlet is arranged such that the fiber flakes, which until then are substantially free of conveying air, can be taken over directly by the impact elements of the roller from the inlet. There is no more air is present, the acquisition of the flakes by the roller is essentially a mechanical transfer.
  • the flock stream should not escape strongly compressed from the inlet channel, but it should correspond more to a compressed fiber flake stream.
  • the cross-section b2 (FIG. FIG. 3 ) of the inlet channel, is adjustable with respect to the cross section b1, wherein b2 is greater than b1.
  • the cross section of a2 is adjustable with respect to a1, where a2 is smaller than a1.
  • the contact area with the air-permeable wall remains constant. In this way, the compression of the flakes can be adjusted, possibly in dependence on the volume of the fiber flakes in the flow.

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

Claims (17)

  1. Dispositif de nettoyage pour des flocons de fibres transportés dans un courant d'air transporteur, notamment des flocons de fibres de coton, comprenant un cylindre couché, garni d'éléments de frappe, au-dessus du côté supérieur duquel, à une extrémité du cylindre, est disposée une ouverture d'entrée (1), et à l'autre extrémité, une ouverture de sortie (2) pour le courant transporteur, caractérisé en ce que l'ouverture d'entrée (1) est précédée d'un dispositif de séparation d'air (18) qui sépare l'air de transport et les flocons de fibres, de telle sorte qu'un courant de flocons de fibres soit acheminé au dispositif de nettoyage.
  2. Dispositif de nettoyage selon la revendication 1, caractérisé en ce que le dispositif de séparation d'air (18) est un canal se rétrécissant dans la direction du courant transporteur, qui comprend une paroi perméable à l'air, à travers laquelle l'air de transport peut s'échapper.
  3. Dispositif de nettoyage selon la revendication 2, caractérisé en ce que la paroi perméable à l'air est disposée dans la direction de transport du courant de matière.
  4. Dispositif de nettoyage selon la revendication 2 ou 3, caractérisé en ce que la paroi perméable à l'air est disposée de manière imbriquée dans le courant de matière.
  5. Dispositif de nettoyage selon l'une quelconque des revendications 2 à 4, caractérisé en ce qu'un canal d'évacuation d'air est disposé du côté de la sortie d'air de la paroi perméable à l'air.
  6. Dispositif de nettoyage selon la revendication 5, caractérisé en ce que la section transversale du canal d'évacuation d'air augmente dans la direction du courant de fibres.
  7. Dispositif de nettoyage selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'une dépression est appliquée dans le canal d'évacuation d'air.
  8. Dispositif de nettoyage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'extrémité du canal d'entrée est disposée de telle sorte que les flocons de fibres soient directement repris des éléments de frappe du cylindre.
  9. Dispositif de nettoyage selon l'une quelconque des revendications précédentes, caractérisé en ce que la quantité d'air à séparer peut être ajustée.
  10. Dispositif de nettoyage selon l'une quelconque des revendications précédentes, caractérisé en ce que la perméabilité à l'air de la paroi peut être ajustée.
  11. Dispositif de nettoyage selon l'une quelconque des revendications précédentes, caractérisé en ce que le canal de sortie est disposé de manière à s'écarter tangentiellement du cylindre.
  12. Dispositif de nettoyage selon l'une quelconque des revendications précédentes, caractérisé en ce que des moyens sont prévus dans le canal de sortie, pour introduire de l'air dans le courant de flocons de fibres.
  13. Dispositif de nettoyage selon la revendication 12, caractérisé en ce que les moyens sont auto-ajustables.
  14. Dispositif de nettoyage selon la revendication 12 ou 13, caractérisé en ce que les moyens incluent des fausses fentes d'air ou un volet ou une grille.
  15. Dispositif de nettoyage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on prévoit au moins un dispositif de mesure pour mesurer le courant d'entrée et/ou le courant de sortie et/ou la matière de sortie.
  16. Dispositif de nettoyage selon la revendication 15, caractérisé en ce que le dispositif de mesure mesure la pression et/ou le débit volumique et/ou la différence de couleur de la matière.
  17. Dispositif de nettoyage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on prévoit une régulation et une commande pour effectuer les ajustements.
EP05793976A 2004-11-04 2005-10-27 Dispositif de nettoyage servant a retirer des amas de fibres Ceased EP1807562B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH18192004 2004-11-04
PCT/CH2005/000630 WO2006047897A1 (fr) 2004-11-04 2005-10-27 Dispositif de nettoyage servant a retirer des amas de fibres

Publications (2)

Publication Number Publication Date
EP1807562A1 EP1807562A1 (fr) 2007-07-18
EP1807562B1 true EP1807562B1 (fr) 2008-10-15

Family

ID=35501860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05793976A Ceased EP1807562B1 (fr) 2004-11-04 2005-10-27 Dispositif de nettoyage servant a retirer des amas de fibres

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EP (1) EP1807562B1 (fr)
CN (1) CN101052759B (fr)
DE (1) DE502005005719D1 (fr)
WO (1) WO2006047897A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702443A1 (de) * 2009-12-17 2011-06-30 Rieter Ag Maschf Reinigungsvorrichtung für Faserflocken.
CH713895A1 (de) * 2017-06-15 2018-12-28 Rieter Ag Maschf Vorrichtung zur Reinigung von Fasergut.
CH713995A2 (de) * 2017-07-17 2019-01-31 Rieter Ag Maschf Reinigungsvorrichtung.
CH714101A1 (de) * 2017-08-30 2019-03-15 Rieter Ag Maschf Vorrichtung zur Regelung eines Faserflockenstromes in einem Reiniger.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113819A3 (fr) * 1982-12-21 1984-08-22 Maschinenfabrik Rieter Ag Procédé pour le traitement des flocons de fibres et dispositif pour la mise en oeuvre de ce procédé
EP0379726B1 (fr) * 1989-01-26 1992-07-22 Maschinenfabrik Rieter Ag Machine de nettoyage pour fibres textiles
DE58909599D1 (de) * 1989-01-31 1996-03-21 Rieter Ag Maschf Reinigungsmaschine für Textilfasern
DE3912565A1 (de) * 1989-04-17 1990-10-18 Hollingsworth Gmbh Vorrichtung zum speisen von in flockenform befindlichem fasergut
CH681457A5 (fr) * 1990-03-23 1993-03-31 Rieter Ag Maschf
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
DE10214389A1 (de) * 2002-03-30 2003-10-16 Truetzschler Gmbh & Co Kg Vorrichtung in der Spinnereivorbereitung zum Abscheiden der Transportluft beim Beschicken von Fasermaterial, z.B. Baumwolle o. dgl., zu einer Verarbeitungsmaschine

Also Published As

Publication number Publication date
DE502005005719D1 (de) 2008-11-27
WO2006047897A1 (fr) 2006-05-11
CN101052759A (zh) 2007-10-10
CN101052759B (zh) 2016-03-30
EP1807562A1 (fr) 2007-07-18

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