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EP0989214B1 - Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut - Google Patents

Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut Download PDF

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Publication number
EP0989214B1
EP0989214B1 EP19980810885 EP98810885A EP0989214B1 EP 0989214 B1 EP0989214 B1 EP 0989214B1 EP 19980810885 EP19980810885 EP 19980810885 EP 98810885 A EP98810885 A EP 98810885A EP 0989214 B1 EP0989214 B1 EP 0989214B1
Authority
EP
European Patent Office
Prior art keywords
air
separation container
accordance
separation
fibre
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 - Lifetime
Application number
EP19980810885
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German (de)
English (en)
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EP0989214A1 (fr
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.)
Jossi Holding AG
Original Assignee
Jossi Holding AG
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8236302&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0989214(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Jossi Holding AG filed Critical Jossi Holding AG
Priority to EP19980810885 priority Critical patent/EP0989214B1/fr
Priority to DE59808078T priority patent/DE59808078D1/de
Publication of EP0989214A1 publication Critical patent/EP0989214A1/fr
Application granted granted Critical
Publication of EP0989214B1 publication Critical patent/EP0989214B1/fr
Anticipated expiration legal-status Critical
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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
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/003—Detection and removal of impurities

Definitions

  • the invention relates to a method for eliminating Foreign matter in fiber material, especially in raw cotton according to the preamble of claim 1.
  • Such methods are used, for example, in the blow room of a spinning mill, to prepare the raw cotton for the spinning process. In doing so, we will postpone as early as possible foreign fibers such as e.g. cords, Jute scraps etc., but also plastic films and the like more eliminated.
  • the in the waste container still air displaced by the newly introduced air mass and flows back through the discharge opening into the fiber transport channel.
  • the violent turbulence that arises impurities can be whirled up and get so back into the fiber transport line.
  • the Compressed air pulse disturbed by the onset of backflow.
  • WO 89/01832 already addresses the problem of turbulence indicated in the waste container. To avoid Whirling up is suggested to the excretion container to train so large that the gas pressure pulse disperse triggered currents and turbulence can without affecting the material flow. So that can the problem is not solved satisfactorily and in the limited space in a blow room it is not desirable without large volume imperative Install components.
  • DE U 296 04 552 proposes that by the To redirect air pressure pulse triggered air flow and again to feed the fiber transport line.
  • a further opening is arranged at a distance from the discharge opening, which continuously separates the waste container with the fiber transport line combines.
  • Such a permanent connection at an additional point does not work easily removing air from the separation container, because the pressure conditions are about the same everywhere.
  • the displaced air is only over part of the channel width about the next way, namely through the opening in flow back the transport channel.
  • the volume of the separation tank is enlarged or if through an air vent air is extracted from the separation tank.
  • air flowing in during the separation process increases the volume of the waste container and in the second case, air comes out of the waste container deducted.
  • this measure is controlled and depending on an actual elimination process.
  • the fiber transport line is in normal operation only in terms of pressure via the discharge opening connected to the waste container.
  • An air conveyor can be operated to extract the air, which a largely predeterminable amount of air from the separation container promotes.
  • Such air conveyors or injectors have a high capacity and it would be easy conceivable, in the short term at least as much air from the separation tank aspirate than by the compressed air pulse is fed.
  • the air extracted from the separation container could enter the Fiber transport line are returned. Because the derivative at a targeted time, but it would also be easily conceivable to vent the air into a discharge line conduct or vent into the atmosphere. It is there conceivable to temporarily extract the air from the waste container connect to a vacuum source, e.g. on a dedusting system.
  • the means to increase the volume or to subtract the Air is passed through the sensor system via a suitable control device driven.
  • Can on the control device various parameters, in particular duration and amount of Air discharge can be set.
  • a fiber transport line 1 in the conveying direction a is on a fiber transport line 1 in the conveying direction a, one behind the other, a sensor system 2 and a separation device 5 is arranged.
  • the sensor system 2 has, for example, two color line cameras 4, 4 ', which are diametrically opposite and offset the fiber transport line are arranged and which by Windows 3, 3 'act on the transported fiber material.
  • the separating device 5 arranged downstream has via at least one compressed air nozzle 6, which is transverse to the fiber transport line 1 is arranged or acts. Opposite the A discharge opening 7 is arranged in the compressed air nozzle leads to a separation container 8.
  • the cameras 4, 4 'and the compressed air nozzle 6 are operatively connected to a control device 12. If the sensor system 2 detects a foreign substance, for example a colored film strip, the Compressed air nozzle 6 controlled so that it is in the correct Triggers a pulse of compressed air in the direction of arrow b, the contaminated subset of the fibers through the opening 7 is deflected into the separating container 8.
  • baffles 10 to the To influence flow. From the opposite of the atmosphere largely pressure-tight separation container 8 can contaminated fibers permanently or at certain intervals can be removed via a lock 9.
  • the arrangement described above also applies to the rest Embodiments too.
  • Modifications to the sensor system or the separating device possible.
  • the fiber transport line does not necessarily have to run horizontally or the waste container does not necessarily have to be under the fiber transport line be arranged.
  • Air extraction opening 11 arranged, which preferably with a sieve 13 is covered.
  • the air vent leads to a derivative 20, which the separating tank 8 with a Vacuum source 29 connects.
  • this derivative there is one Flap 14 arranged, which is actuated via a flap drive 15 can be. This is also in operative connection with the control device 12, so that simultaneously with the Activating the compressed air nozzle 6 also opens the flap 14 becomes.
  • Air from the separating container 8 is in the direction of the arrow c deducted until the flap 14 preferably with a time delay compared to the compressed air pulse is closed.
  • the exemplary embodiment according to FIG. 2 basically shows the same principle of operation, but alternative means to controlled extraction of air.
  • the air vent 11 am Excretion container 8 can be in the normal operating state be closed with a check valve 21.
  • the air vent also leads to a return line 16, which in turn separates the container 8 with the fiber transport line combines. But as indicated, it would also be conceivable the connection with a derivative 20.
  • Air to be discharged from the separating container 8 becomes a Air conveyor or injector 17 actuated. This is about one Valve 19 connected to a compressed air line 18.
  • the Valve 19 receives control signals from control device 12, by opening the valve a suction effect in the direction of the arrow c is achieved.
  • control device 12 For extracting air from the waste container other suitable means such as fans, etc. are used, with occasionally also a controlled one It may be necessary to close the air vent can.
  • FIG. 3 shows a variant in which the volume is only temporary of the separation container 8 is enlarged.
  • a movable wall section 23 is provided, which in Arrow direction d can be moved and that with the rest Housing of the separating container 8 via a bellows 24 is connected pressure-tight.
  • a pneumatic section 25 serves over a wall section
  • Valve 27 is connected to a compressed air line 26.
  • the movable wall section becomes a vented pneumatic cylinder 23 into the starting position by means of a compression spring 28 pressed back.
  • the valve 27 is controlled by the control device 12 controlled, the pneumatic cylinder 25 activated and the movable wall section 23 suddenly is withdrawn.
  • the resulting volume increase compensates for the inflowing air volume.

Landscapes

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

Claims (14)

  1. Procédé pour éliminer des matières étrangères dans un matériau fibreux, en particulier dans du coton brut, selon lequel on fait passer le matériau fibreux successivement, dans une conduite de transport de fibres pneumatique (1), devant un système de capteur (2) et un dispositif d'élimination (5), et lorsque le système de capteur détecte des substances étrangères, la partie salie du matériau fibreux est déviée, à l'aide d'une impulsion de pression d'air dirigée transversalement par rapport à ladite conduite de transport de fibres, dans un récipient d'élimination (8) qui est disposé sur la conduite de transport de fibres et relié à celle-ci par une ouverture (7) et qui est très étanche à la pression, caractérisé en ce que, au moins pendant la durée de l'impulsion de pression d'air, on augmente le volume du récipient d'élimination (8) ou on extrait de l'air dudit récipient par une ouverture d'extraction d'air (11).
  2. Procédé selon la revendication 1, caractérisé en ce que pour extraire l'air, on actionne un dispositif d'acheminement d'air (17) qui évacue une quantité d'air du récipient d'élimination.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'air extrait du récipient d'élimination (8) est ramené dans la conduite de transport de fibres (1).
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'air extrait du récipient d'élimination est amené dans une conduite de sortie (20).
  5. Procédé selon la revendication 1, caractérisé en ce que pour extraire l'air, on raccorde temporairement le récipient d'élimination à une source de dépression.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que les moyens pour augmenter le volume ou pour extraire l'air sont commandés par le système de capteur (2).
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que l'extraction de l'air est maintenue au-delà de la durée de l'impulsion de pression d'air.
  8. Dispositif pour éliminer les substances étrangères dans un matériau fibreux, en particulier dans du coton brut, comportant une conduite de transport de fibres pneumatique (1) sur laquelle sont disposés successivement, dans le sens de transport, un système de capteur (2) destiné à détecter les matières étrangères, et un dispositif d'élimination (5) avec au moins un injecteur d'air comprimé (6) qui agit transversalement par rapport à la conduite de transport de fibres, laquelle conduite présente, en face de l'injecteur d'air comprimé, une ouverture (7) qui mène à un récipient d'élimination (8) très étanche à la pression, caractérisé en ce que le récipient d'élimination (8) comporte des moyens (22) pour augmenter temporairement son volume ou des moyens (14, 21) pour extraire temporairement de l'air du récipient d'élimination (8) afin de compenser la quantité d'air injectée dans le récipient d'élimination lors d'une opération d'élimination.
  9. Dispositif selon la revendication 8, caractérisé en ce qu'il est prévu, raccordé au récipient d'élimination (8), un dispositif d'acheminement d'air (17) grâce auquel une quantité d'air peut être évacuée du récipient d'élimination.
  10. Dispositif selon la revendication 8 ou 9, caractérisé en ce que le récipient d'élimination est monté en dérivation sur la conduite de transport de fibres (1) par l'intermédiaire du dispositif d'acheminement d'air.
  11. Dispositif selon la revendication 8 ou 9, caractérisé en ce que le récipient d'élimination est relié à une conduite de sortie (20) par l'intermédiaire du dispositif d'acheminement d'air.
  12. Dispositif selon la revendication 8, caractérisé en ce que le récipient d'élimination (8) est relié à une source de dépression par l'intermédiaire d'un organe d'arrêt (15) apte à être commandé.
  13. Dispositif selon l'une des revendications 8 à 12, caractérisé en ce que les moyens sont aptes à être activés à l'aide d'un dispositif de commande (12) qui est en relation fonctionnelle avec le système de capteur (2).
  14. Dispositif selon l'une des revendications 8 à 13, caractérisé en ce qu'il est prévu dans le récipient d'élimination (8) au moins une chicane (10) pour influencer les écoulements.
EP19980810885 1998-09-07 1998-09-07 Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut Expired - Lifetime EP0989214B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19980810885 EP0989214B1 (fr) 1998-09-07 1998-09-07 Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut
DE59808078T DE59808078D1 (de) 1998-09-07 1998-09-07 Verfahren und Vorrichtung zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19980810885 EP0989214B1 (fr) 1998-09-07 1998-09-07 Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut

Publications (2)

Publication Number Publication Date
EP0989214A1 EP0989214A1 (fr) 2000-03-29
EP0989214B1 true EP0989214B1 (fr) 2003-04-23

Family

ID=8236302

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EP19980810885 Expired - Lifetime EP0989214B1 (fr) 1998-09-07 1998-09-07 Procédé et appareil pour éliminer les corps étrangers de la matière fibreuse, en particulier du coton brut

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EP (1) EP0989214B1 (fr)
DE (1) DE59808078D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101736450A (zh) * 2008-11-19 2010-06-16 特鲁菲舍尔股份有限公司及两合公司 纺纱准备机上的探测和分离纤维材料内或之间杂质的设备

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002066717A1 (fr) * 2001-02-16 2002-08-29 Maschinenfabrik Rieter Ag Dispositif pour eliminer des impuretes
EP1234901A1 (fr) * 2001-02-22 2002-08-28 Jossi Holding AG Procédé et appareil pour détecter et éliminer des corps étrangers dans une matière fibreuse, en particulier du coton brut
DE10206609A1 (de) * 2002-02-15 2003-08-28 Rieter Ag Maschf Verfahren und Vorrichtung an einer Karde zum Erkennen und Ausscheiden von Fremdstoffen in Fasermaterial
DE10347006B4 (de) * 2003-10-07 2020-10-15 Hubert Hergeth Trichterabsaugung bei Fremdteilen
DE502005010091D1 (de) * 2005-01-25 2010-09-23 Jossi Holding Ag Verfahren und vorrichtung zum ausscheiden vom fremdstoffen in fasermaterial, insbesondere in rohbaumwolle
DE102005014898A1 (de) * 2005-04-01 2006-10-05 Hubert Hergeth Gehäuse für eine Fremdfaserdetektion
DE102006047038A1 (de) * 2006-10-02 2008-04-03 Hergeth, Hubert Trichterabsaugung ll

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0735616B2 (ja) * 1990-02-26 1995-04-19 フジディバイス株式会社 異物除去装置
DE4131188C2 (de) * 1991-09-19 2002-08-14 Truetzschler Gmbh & Co Kg Vorrichtung an einer Förderleitung zum pneumatischen Fördern von Textilfasern, insbes. in der Spinnereivorbereitung
WO1996035831A1 (fr) * 1995-05-12 1996-11-14 Jossi Ag Procede et dispositif permettant d'identifier et de separer des corps etrangers contenus dans un materiau fibreux
EP0879905A1 (fr) * 1997-05-20 1998-11-25 Jossi Holding AG Procédé et appareil pour détecter et éliminer des corps étrangers dans une matière fibreuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101736450A (zh) * 2008-11-19 2010-06-16 特鲁菲舍尔股份有限公司及两合公司 纺纱准备机上的探测和分离纤维材料内或之间杂质的设备
CN101736450B (zh) * 2008-11-19 2014-06-04 特鲁菲舍尔股份有限公司及两合公司 纺纱准备机上的探测和分离纤维材料内或之间杂质的设备

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Publication number Publication date
EP0989214A1 (fr) 2000-03-29
DE59808078D1 (de) 2003-05-28

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