EP0989214B1 - Verfahren und Vorrichtung zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle - Google Patents
Verfahren und Vorrichtung zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle Download PDFInfo
- 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
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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)
Description
- Figur 1
- eine schematische Darstellung einer Vorrichtung mit einer gesteuerten Klappe zur Freigabe der Luftabzugsöffnung und mit einer Unterdruckquelle,
- Figur 2
- eine schematische Darstellung einer Vorrichtung mit einem gesteuerten Luftförderer und
- Figur 3
- eine schematische Darstellung einer Vorrichtung mit verstellbarem Volumen des Ausscheidebehälters.
Claims (14)
- Verfahren zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle, wobei das Fasermaterial in einer pneumatischen Fasertransportleitung (1) hintereinander an einem Sensorsystem (2) und an einer Ausscheidevorrichtung (5) vorbeigeführt wird, und wobei beim Erkennen von Fremdstoffen durch das Sensorsystem die verunreinigte Teilmenge des Fasermaterials mittels eines quer zur Fasertransportleitung gerichteten Luftdruckimpulses in einen an der Fasertransportleitung angeordneten und mit dieser über eine Öffnung (7) verbundenen Ausscheidebehälter (8) umgelenkt wird, welcher weitgehend druckdicht ausgebildet ist, dadurch gekennzeichnet, dass wenigstens während der Dauer des Druckluftimpulses entweder das Volumen des Ausscheidebehälters (8) vergrössert wird oder über eine Luftabzugsöffnung (11) am Ausscheidebehälter Luft abgezogen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zum Abziehen der Luft ein Luftförderer (17) betätigt wird, der eine Luftmenge aus dem Ausscheidebehälter fördert.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die aus dem Ausscheidebehälter (8) abgezogene Luft in die Fasertransportleitung (1) zurückgeführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die aus dem Ausscheidebehälter abgezogene Luft in eine Abgangsleitung (20) geleitet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zum Abziehen der Luft der Ausscheidebehälter vorübergehend an eine Unterdruckquelle angeschlossen wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Mittel zum Vergrössern des Volumens oder zum Abziehen der Luft durch das Sensorsystem (2) angesteuert werden.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Abziehen der Luft über die Dauer des Luftdruckimpulses hinaus aufrechterhalten wird.
- Vorrichtung zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle, mit einer pneumatischen Fasertransportleitung (1) an der in Transportrichtung hintereinander ein Sensorsystem (2) zum Erkennen von Fremdstoffen und eine Ausscheidevorrichtung (5) mit wenigstens einer quer zur Fasertransportleitung wirksamen Luftdruckdüse (6) angeordnet sind, wobei die Fasertransportleitung gegenüber der Druckluftdüse eine Öffnung (7) aufweist, die zu einem weitgehend druckdicht ausgebildeten Ausscheidebehälter (8) führt, dadurch gekennzeichnet, dass der Ausscheidebehälter (8) entweder Mittel (22) zum vorübergehende Vergrössern seines Volumens oder Mittel (14, 21) zum vorübergehenden Abziehen von Luft aus dem Ausscheidebehälter (8) für die Kompensation der bei einem Ausscheidevorgang in den Ausscheidebehälter geblasenen Luftmenge aufweist.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass an an den Ausscheidebehälter (8) ein Luftförderer (17) angeschlossen ist, mit dem eine Luftmenge aus dem Ausscheidebehälter förderbar ist.
- Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Ausscheidebehälter über den Luftförderer mit der Fasertransportleitung (1) kurzgeschlossen ist.
- Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Ausscheidebehälter über den Luftförderer mit einer Abgangsleitung (20) verbunden ist.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Ausscheidebehälter (8) über ein steuerbares Absperrorgan (15) an eine Unterdruckquelle angeschlossen ist.
- Vorrichtung nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, dass die Mittel mit einer Steuervorrichtung (12) aktivierbar sind, welche mit dem Sensorsystem (2) in Wirkverbindung steht.
- Vorrichtung nach einem der Ansprüche 8 bis 13, dadurch gekennzeichnet, dass im Ausscheidebehälter (8) wenigstens ein Leitblech (10) zum Beeinflussen der Strömungen angeordnet ist.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59808078T DE59808078D1 (de) | 1998-09-07 | 1998-09-07 | Verfahren und Vorrichtung zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle |
EP19980810885 EP0989214B1 (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 (de) | 1998-09-07 | 1998-09-07 | Verfahren und Vorrichtung zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0989214A1 EP0989214A1 (de) | 2000-03-29 |
EP0989214B1 true EP0989214B1 (de) | 2003-04-23 |
Family
ID=8236302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980810885 Expired - Lifetime EP0989214B1 (de) | 1998-09-07 | 1998-09-07 | Verfahren und Vorrichtung zum Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0989214B1 (de) |
DE (1) | DE59808078D1 (de) |
Cited By (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE50213163D1 (de) * | 2001-02-16 | 2009-02-12 | Jossi Holding Ag | Abscheidevorrichtung für fremdstoffe |
EP1234901A1 (de) * | 2001-02-22 | 2002-08-28 | Jossi Holding AG | Verfahren und Vorrichtung zum Erkennen und Ausscheiden von Fremdstoffen in Fasermaterial, insbesondere in Rohbaumwolle |
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 |
WO2006079426A1 (de) * | 2005-01-25 | 2006-08-03 | 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)
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 (de) * | 1995-05-12 | 1996-11-14 | Jossi Ag | Verfahren und vorrichtung zum erkennen und ausscheiden von fremdstoffen in fasermaterial |
EP0879905A1 (de) * | 1997-05-20 | 1998-11-25 | Jossi Holding AG | Verfahren und Vorrichtung zum Erkennen und Ausscheiden von Fremdstoffen in Fasermaterial |
-
1998
- 1998-09-07 DE DE59808078T patent/DE59808078D1/de not_active Expired - Fee Related
- 1998-09-07 EP EP19980810885 patent/EP0989214B1/de not_active Expired - Lifetime
Cited By (2)
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 |
Also Published As
Publication number | Publication date |
---|---|
EP0989214A1 (de) | 2000-03-29 |
DE59808078D1 (de) | 2003-05-28 |
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