EP0585196A1 - Casing of a carding machine - Google Patents

Casing of a carding machine Download PDF

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Publication number
EP0585196A1
EP0585196A1 EP93810468A EP93810468A EP0585196A1 EP 0585196 A1 EP0585196 A1 EP 0585196A1 EP 93810468 A EP93810468 A EP 93810468A EP 93810468 A EP93810468 A EP 93810468A EP 0585196 A1 EP0585196 A1 EP 0585196A1
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EP
European Patent Office
Prior art keywords
suction
openings
casing
sheathing
bars
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Granted
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EP93810468A
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German (de)
French (fr)
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EP0585196B1 (en
Inventor
Jürg Faas
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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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
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
    • D01G15/82—Arrangements for confining or removing dust, fly or the like
    • D01G15/825—Arrangements for confining or removing dust, fly or the like by suction or blowing

Definitions

  • the invention relates to a casing of a card according to the preamble of patent claim 1.
  • the cards of the current design are surrounded by a sheathing which is required on the one hand for safety-related regulations and on the other hand for conditions of air pollution control.
  • suction devices are provided within the casing, which generate a certain negative pressure in the card's encased space. This removes the fiber parts, shell parts and other dirt parts.
  • the cards known today such as the C4 / 1 from RIETER or the DK 740 from Trützschler, one or more suction openings with a small suction area in relation to the area of the sheathing, partially with a grid, are provided in the sheathing provided with a filter cloth, are covered.
  • the smaller cracks and openings in the casing must be sealed so that no false air is sucked in. Due to the high flow velocities of the sucked air in the area of these openings and cracks, flight and dirt are sucked in from the spinning room. To prevent this, it is necessary that the casing is sealed as well as possible so that fresh air is only sucked in at the openings provided. To ensure that the suction effect does not drop too much, the filter cloth or filter must also be cleaned regularly from the fiber mat that forms.
  • the object of the invention is now to improve the suction of the fiber fly accumulating in the jacket of a card, the shell and dirt parts and the like in such a way that the requirements for the sealing and for the regular cleaning of the filter cloth can be substantially reduced.
  • the invention has the essential advantage that the air flows within the card are significantly lower, so that the sealing of the casing is no longer important. With the suction power of the suction device remaining the same, the amount of air sucked in increases, which leads to improved dust removal. Since the intake air flows into the casing at a much lower speed, the floating parts such as flying fibers etc. are only sucked in to a very small extent and therefore with a significantly lower volume flow density, so that in many cases the filter cloth in front of the intake openings can be omitted, for example then when the spinning room is clean enough.
  • the casing 1 of a card is drawn only very schematically in side view, without observing the correct scales.
  • the feed table 2 can be seen on the right-hand side and the card sliver outlet 3 on the left-hand side.
  • the drawn side of the casing 1 consists of two doors 4 and 5, which covers the card indicated by dashed lines with reel 6, feed roller 7 and beater 8.
  • rectangular suction openings 9 and 10 are provided, which are provided with bars 11.
  • FIG. 2 the same reference numerals are used for the same elements as in Figure 1.
  • the drum 6 is indicated with its axis of rotation shown in dashed lines.
  • the intake air represented by arrows 12 is drawn in through the intake openings into the intake pipes 13 of an L-shaped channel 14 known from EP-A-0 340 458.
  • the spatial arrangement of the suction device 15 can also be effective centrally (not shown here) and thus simultaneously for several cards. However, this is not important for the present invention.
  • the suction openings 9 and 10 (FIG.
  • FIG 3 shows the suction opening 4 or 5 with the border 16 and the bars 11, of which only two are shown here. In reality there are a lot of them available.
  • the bars 11 have a U-shaped profile and are directed with the legs of the U inwards.
  • the U-profile is chamfered or rounded at the edges 17 in order to prevent fibers from getting caught and thus the suction openings being covered over time. This creates a kind of self-cleaning effect.
  • the border 16 is also flanged inwards and, for the reason mentioned, also has a beveled or rounded edge 18.
  • the distance a between the outer sides of the legs of the U-shaped lattice bar 11 is between 10 and 40 mm, preferably about 20 mm.
  • the distance b between two bars 11, again measured between the outside of the legs, is at most 40 mm and is preferably about 20 mm.
  • the lattice bars 11 are designed as a coherent lattice, which is mounted from the inside of the casing into the suction openings 9 and 10. This prevents the bars 11 from being removed from the outside without opening the otherwise locked doors 4 and 5.
  • the effective suction area of the suction openings 9 and 10 is the area formed by the suction openings 9 and 10 minus the area covered by the bars 11.
  • the effective suction area of the suction openings 9 and 10 must be at least 0.4 m2, preferably at least 0.5 m2.

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

Abstract

In a casing (1) of a carding machine, which is connected to a suck-up device (15), it is proposed to select the effective area of the suction orifices (9, 10) at at least 0.5 m<2>. As a result, the suction air is sucked up at a substantially lower flow velocity and therefore the suspended particles and fibre particles occurring in a spinning mill are sucked into the suck-up device (15) in a much lower proportion, so that, in many instances, there is no need for an exact sealing off of the casing (1) and a filter cloth at the suction orifices (9, 10). <IMAGE>

Description

Die Erfindung betrifft eine Ummantelung einer Karde nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a casing of a card according to the preamble of patent claim 1.

Es ist allgemein bekannt, dass die Karden der heutigen Bauart mit einer Ummantelung umgeben sind, welche einerseits aus sicherheitstechnischen Vorschriften und andererseits aus Bedingungen der Luftreinhaltung erforderlich sind. Um den beim Kardieren entstehenden Flug, Schalenteile und sonstigen Schmutzteile wirksam zu entfernen sind innerhalb der Ummantelung Absaugeinrichtungen vorgesehen, die einen gewissen Unterdruck im ummantelten Raum der Karde erzeugen. Dadurch werden die Faserteile, Schalenteile und sonstigen Schmutzteile abgesaugt. Dazu sind bei den heute bekannten Karden, wie beispielsweise die C4/1 der Firma RIETER oder die DK 740 der Firma Trützschler, in der Ummantelung eine oder mehrere Ansaugöffnungen mit einer geringen Ansaugfläche bezogen auf die Fläche der Ummantelung vorgesehen, die mit einem Rastergitter, teilweise mit Filtertuch versehen, abgedeckt sind. Wegen der grossen Ansaugwirkung müssen dazu die kleineren Ritzen und Öffnungen in der Ummantelung abgedichtet werden, damit keine Falschluft angesaugt wird. Durch die hohen Strömungsgeschwindigkeiten der angesaugten Luft im Bereich dieser Öffnungen und Ritzen werden Flug und Schmutzteile aus dem Spinnereisaal hineingesaugt. Um dies zu verhindern, ist es erforderlich, dass eine möglichst gute Abdichtung der Ummantelung vorgenommen wird, damit Frischluft nur an den vorgesehenen Öffnungen hineingesogen wird. Damit die Saugwirkung nicht zu stark abfällt, muss ausserdem das Filtertuch oder Filter regelmässig von der sich bildenden Fasermatte gereinigt werden.It is generally known that the cards of the current design are surrounded by a sheathing which is required on the one hand for safety-related regulations and on the other hand for conditions of air pollution control. In order to effectively remove the flight, shell parts and other dirt parts that occur during carding, suction devices are provided within the casing, which generate a certain negative pressure in the card's encased space. This removes the fiber parts, shell parts and other dirt parts. For this purpose, with the cards known today, such as the C4 / 1 from RIETER or the DK 740 from Trützschler, one or more suction openings with a small suction area in relation to the area of the sheathing, partially with a grid, are provided in the sheathing provided with a filter cloth, are covered. Because of the large suction effect, the smaller cracks and openings in the casing must be sealed so that no false air is sucked in. Due to the high flow velocities of the sucked air in the area of these openings and cracks, flight and dirt are sucked in from the spinning room. To prevent this, it is necessary that the casing is sealed as well as possible so that fresh air is only sucked in at the openings provided. To ensure that the suction effect does not drop too much, the filter cloth or filter must also be cleaned regularly from the fiber mat that forms.

Die Erfindung stellt sich nun die Aufgabe, die Absaugung des in der Ummantelung einer Karde anfallenden Faserflugs, der Schalen- und Schmutzteile und dergleichen derart zu verbessern, dass die Anforderungen an die Abdichtung und an die regelmässige Reinigung des Filtertuchs wesentlich verringert werden können.The object of the invention is now to improve the suction of the fiber fly accumulating in the jacket of a card, the shell and dirt parts and the like in such a way that the requirements for the sealing and for the regular cleaning of the filter cloth can be substantially reduced.

Diese Aufgabe bei einer gattungsgemässen Ummantelung einer Karde wird durch die Merkmale des Patenanspruchs 1 gelöst.This object with a generic sheathing of a card is achieved by the features of patent claim 1.

Die Erfindung hat den wesentlichen Vorteil, dass die Luftströmungen innerhalb der Karde massgeblich geringer sind, so dass die Abdichtung der Ummantelung nicht mehr ins Gewicht fällt. Bei gleichbleibender Ansaugleistung der Absaugeinrichtung wird die angesaugte Luftmenge grösser, was zu einer verbesserten Entstaubung führt. Da die Ansaugluft mit einer wesentlich geringeren Geschwindigkeit in die Ummantelung hineinströmt, werden die Schwebeteile wie Flugfasern usw. nur noch zu einem sehr kleinen Teil und dadurch mit einer bedeutend geringeren Volumenstromdichte angesaugt, so dass in vielen Fällen das Filtertuch vor den Ansaugöffnungen entfallen kann, beispielsweise dann, wenn der Spinnereisaal eine genügende Sauberkeit aufweist.The invention has the essential advantage that the air flows within the card are significantly lower, so that the sealing of the casing is no longer important. With the suction power of the suction device remaining the same, the amount of air sucked in increases, which leads to improved dust removal. Since the intake air flows into the casing at a much lower speed, the floating parts such as flying fibers etc. are only sucked in to a very small extent and therefore with a significantly lower volume flow density, so that in many cases the filter cloth in front of the intake openings can be omitted, for example then when the spinning room is clean enough.

Weitere Vorteile folgen aus der nachfolgenden Beschreibung, in welcher die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert wird.Further advantages follow from the description below, in which the invention is explained in more detail with reference to an embodiment shown in the drawings.

Es zeigt:

Fig. 1
eine schematische Darstellung einer Seitenansicht der Ummantelung einer Karde,
Fig. 2
eine schematische Obenanschicht (Querschnitt) der Ummantelung in Fig. 1, und
Fig. 3
einen Querschnitt durch eine Ansaugöffnung mit Gitterstäben.
It shows:
Fig. 1
1 shows a schematic representation of a side view of the casing of a card,
Fig. 2
a schematic top layer (cross section) of the casing in Fig. 1, and
Fig. 3
a cross section through a suction opening with bars.

In Figur 1 ist die Ummantelung 1 einer Karde bloss sehr schematisch in Seitenansicht gezeichnet, ohne Einhaltung der richtigen Masstäbe. Auf der rechten Seite ist der Einzugstisch 2 und auf der linken Seite der Kardenbandauslauf 3 ersichtlich. Die gezeichnete Seite der Ummantelung 1 besteht aus zwei Türen 4 und 5, die die gestrichelt angedeutete Karde mit Tambour 6, Einzugswalze 7 und Briseur 8 abdeckt. In den beiden Türen 4 und 5 sind rechteckige Ansaugöffnungen 9 und 10 vorgesehen, die mit Gitterstäben 11 versehen sind.In Figure 1, the casing 1 of a card is drawn only very schematically in side view, without observing the correct scales. The feed table 2 can be seen on the right-hand side and the card sliver outlet 3 on the left-hand side. The drawn side of the casing 1 consists of two doors 4 and 5, which covers the card indicated by dashed lines with reel 6, feed roller 7 and beater 8. In the two doors 4 and 5 rectangular suction openings 9 and 10 are provided, which are provided with bars 11.

In Figur 2 sind für dieselben Elemente dieselben Bezugszeichen verwendet wie in Figur 1. Der Tambour 6 ist mit seiner gestrichelt dargestellten Drehachse angedeutet. Die mit Pfeilen 12 dargestellte Ansaugluft wird durch die Ansaugöffnungen in die Saugrohren 13 eines aus EP-A-0 340 458 bekannten L-förmigen Kanals 14 hineingesogen. Hinter diesem Kanal 14 ist eine Absaugeinrichtung 15 typischerweise mit einer Absaugleistung von 0,5 bis 1,2 m³/s, insbesondere 0,6 bis 0,9 m³/s, angeordnet. Die räumliche Anordnung der Absaugeinrichtung 15 kann auch zentral (hier nicht dargestellt) und somit für mehrere Karden gleichzeitig wirksam sein. Dies ist für die vorliegende Erfindung jedoch nicht von Belang. Die Ansaugöffnungen 9 und 10 (Fig. 1) sind nun möglichst in unmittelbarer Nähe der Ansaugstellen der Saugrohre 13 angeordnet, um die Luftströmungen innerhalb der Karde möglichst gering zu halten. Unkontrollierte Luftströmungen innerhalb der Ummantelung einer Karde können nämlich zu unerwünschten Verfrachtungen von Fasern und Staub und damit zur Verschmutzung des Inneren der Maschine führen. Figur 3 zeigt die Ansaugöffnung 4 oder 5 mit der Umrandung 16 und den Gitterstäben 11, von denen hier nur zwei dargestellt sind. In Wirklichkeit sind eine Vielzahl davon vorhanden. Wie ersichtlich haben die Gitterstäbe 11 ein U-förmiges Profil und sind mit den Beinen des U's nach innen gerichtet. Das U-Profil ist an den Rändern 17 abgekantet oder abgerundet, um zu verhindern, dass Fasern hängenbleiben und somit mit der Zeit die Ansaugöffnungen zugedeckt werden. Dadurch wird eine Art Selbstreiningungseffekt erzeugt. Die Umrandung 16 ist ebenfalls nach innen gebördelt und besitzt aus genanntem Grund auch einen abgekanteten oder abgerundeten Rand 18. Der Abstand a zwischen den Aussenseiten der Beine des U-förmigen Gitterstabs 11 beträgt zwischen 10 und 40 mm, vorzugsweise etwa 20 mm. Der Abstand b zwischen zwei Gitterstäben 11 beträgt, auch wieder gemessen zwischen den Aussenseiten der Beine, höchstens 40 mm und ist vorzugsweise etwa 20 mm. Die Gitterstäben 11 sind als zusammenhängendes Gitter ausgebildet, welches von innen der Ummantelung her in die Ansaugöffnungen 9 und 10 montiert wird. Somit verhindert man, dass die Gitterstäbe 11 von aussen entfernt werden können, ohne die sonst verriegelten Türen 4 und 5 zu öffnen. Ferner kann im Bedarfsfall jeweils ein Filtertuch zwischen dem aus den Gitterstäben 11 gebildeten Gitter und der Umrandung der Ansaugöffnungen 9 und 10 eingespannt werden. Die effektive Ansaugfläche der Ansaugöffnungen 9 und 10 ist die durch die Ansaugöffnungen 9 und 10 gebildete Fläche abzüglich der von den Gitterstäben 11 abgedeckten Fläche. Um die wesentlich geringere Strömungsgeschwindigkeit der angesaugten Luft von maximal 0,3 bis 0,8 m/s, vorzugsweise maximal 0,5 m/s, zu erhalten,die ausserhalb der Ummantelung 1 und in der Nähe der Ansaugöffnungen 9 und 10 gemessen wird, muss die effektive Ansaugfläche der Ansaugöffnungen 9 und 10 mindestens 0,4 m² vorzugsweise mindestens 0,5 m² betragen.In Figure 2, the same reference numerals are used for the same elements as in Figure 1. The drum 6 is indicated with its axis of rotation shown in dashed lines. The intake air represented by arrows 12 is drawn in through the intake openings into the intake pipes 13 of an L-shaped channel 14 known from EP-A-0 340 458. A suction device 15, typically with a suction performance of 0.5 to 1.2 m³ / s, in particular 0.6 to 0.9 m³ / s, is arranged behind this channel 14. The spatial arrangement of the suction device 15 can also be effective centrally (not shown here) and thus simultaneously for several cards. However, this is not important for the present invention. The suction openings 9 and 10 (FIG. 1) are now arranged as close as possible to the suction points of the suction pipes 13 in order to keep the air flows within the card as low as possible. Uncontrolled air currents within the jacket of a card can lead to undesirable loads of fibers and dust and thus to contamination of the interior of the machine. Figure 3 shows the suction opening 4 or 5 with the border 16 and the bars 11, of which only two are shown here. In reality there are a lot of them available. As can be seen, the bars 11 have a U-shaped profile and are directed with the legs of the U inwards. The U-profile is chamfered or rounded at the edges 17 in order to prevent fibers from getting caught and thus the suction openings being covered over time. This creates a kind of self-cleaning effect. The border 16 is also flanged inwards and, for the reason mentioned, also has a beveled or rounded edge 18. The distance a between the outer sides of the legs of the U-shaped lattice bar 11 is between 10 and 40 mm, preferably about 20 mm. The distance b between two bars 11, again measured between the outside of the legs, is at most 40 mm and is preferably about 20 mm. The lattice bars 11 are designed as a coherent lattice, which is mounted from the inside of the casing into the suction openings 9 and 10. This prevents the bars 11 from being removed from the outside without opening the otherwise locked doors 4 and 5. Furthermore, if necessary, a filter cloth can be clamped between the grid formed from the grid bars 11 and the border of the suction openings 9 and 10. The effective suction area of the suction openings 9 and 10 is the area formed by the suction openings 9 and 10 minus the area covered by the bars 11. In order to obtain the significantly lower flow velocity of the intake air of a maximum of 0.3 to 0.8 m / s, preferably a maximum of 0.5 m / s, which is measured outside the casing 1 and in the vicinity of the intake openings 9 and 10, the effective suction area of the suction openings 9 and 10 must be at least 0.4 m², preferably at least 0.5 m².

Claims (10)

Ummantelung (1) einer Karde, welche mit einer Absaugeinrichtung (15) für Schmutzteile, Textilfasern, Schalenteile usw., verbunden ist und in welcher an vorgegebenen Stellen Öffnungen zum Ansaugen der Transportluft vorgesehen sind, dadurch gekennzeichnet, dass die effektive Ansaugfläche aller Ansaugöffnungen (9, 10) mindestens 0,4 m² vorzugsweise mindestens 0,5 m² beträgt.Sheathing (1) of a card, which is connected to a suction device (15) for dirt parts, textile fibers, shell parts, etc. and in which openings are provided at predetermined points for sucking in the transport air, characterized in that the effective suction surface of all suction openings (9 , 10) is at least 0.4 m², preferably at least 0.5 m². Ummantelung nach Anspruch 1, dadurch gekennzeichnet, dass die ausserhalb der Ummantelung (1) in der Nähe der Ansaugöffnungen (9, 10) gemessenen Ansaugströmung geringer als 0,8 m/s ist bei einer Absaugleistung der Absaugeinrichtung (15) von 0,5 bis 1,2 m³/s.Casing according to claim 1, characterized in that the suction flow measured outside the casing (1) in the vicinity of the suction openings (9, 10) is less than 0.8 m / s with a suction power of the suction device (15) from 0.5 to 1.2 m³ / s. Ummantelung nach Anspruch 2, dadurch gekennzeichnet, dass die gemessene Ansaugströmung geringer ist als 0,5 m/s bei einer Absaugleistung der Absaugeinrichtung (15) von 0,6 bis 0,9 m³/s.Sheathing according to claim 2, characterized in that the measured suction flow is less than 0.5 m / s with a suction power of the suction device (15) of 0.6 to 0.9 m³ / s. Ummantelung nach Anspruch 3, dadurch gekennzeichnet, dass die Ansaugöffnungen (9, 10) mit einem Gitter aus zumindest nach innen abgekanteten oder abgerundeten Gitterstäben (11) abgedeckt sind.Sheathing according to claim 3, characterized in that the suction openings (9, 10) are covered with a grid of grid bars (11) which are at least inwardly bent or rounded. Ummantelung nach Anspruch 4, dadurch gekennzeichnet, dass der Abstand zwischen den Gitterstäben (11) geringer als 40 mm ist.Sheathing according to claim 4, characterized in that the distance between the bars (11) is less than 40 mm. Ummantelung nach Anspruch 5, dadurch gekennzeichnet, dass dieser Abstand etwa 20 mm beträgt.Sheath according to claim 5, characterized in that this distance is approximately 20 mm. Ummantelung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Ansaugöffnungen (9, 10) rechteckig sind und von einem Gitter mit im Querschnitt U-förmigen Gitterstäben (11) gebildet ist.Sheath according to one of claims 4 to 6, characterized in that the suction openings (9, 10) are rectangular and are formed by a grid with grid bars (11) which are U-shaped in cross section. Ummantelung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Ansaugöffnungen (9, 10) in unmittelbarer Nähe der Ansaugstellen der an der Karde vorgesehenen Saugrohren (13) angeordnet sind.Sheathing according to one of the preceding claims, characterized in that the suction openings (9, 10) are arranged in the immediate vicinity of the suction points of the suction pipes (13) provided on the card. Ummantelung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Gitterstäbe (11) als einstückiges Gitter von hinten in die Ansaugöffnungen (9, 10) montierbar sind.Sheathing according to one of the preceding claims, characterized in that the grille bars (11) can be mounted as a one-piece grille from the rear into the suction openings (9, 10). Ummantelung nach Anspruch 9, dadurch gekennzeichnet, dass zwischen dem montierbaren Gitter und der Umrandung der Ansaugöffungen (9, 10) ein Filtertuch eingespannt ist.Sheath according to claim 9, characterized in that a filter cloth is clamped between the mountable grille and the border of the suction openings (9, 10).
EP93810468A 1992-08-04 1993-07-01 Casing of a carding machine Expired - Lifetime EP0585196B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2441/92 1992-08-04
CH244192 1992-08-04

Publications (2)

Publication Number Publication Date
EP0585196A1 true EP0585196A1 (en) 1994-03-02
EP0585196B1 EP0585196B1 (en) 1998-03-11

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Family Applications (1)

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EP93810468A Expired - Lifetime EP0585196B1 (en) 1992-08-04 1993-07-01 Casing of a carding machine

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US (1) US5419016A (en)
EP (1) EP0585196B1 (en)
CN (1) CN1087139A (en)
DE (1) DE59308241D1 (en)

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CN101250774B (en) * 2008-03-14 2010-06-02 常熟市振泰不织布有限公司 Device for sucking ray flower of carding machine
CN103184532A (en) * 2013-03-26 2013-07-03 寿县寿州麻纺织厂 Environment-friendly process flow for manufacturing hemp products
CN103225137A (en) * 2013-05-15 2013-07-31 海门市麒新纺织机械有限公司 Single-cylinder double-doffer carding machine
CN110952172A (en) * 2019-12-26 2020-04-03 卓郎（常州）纺织机械有限公司 Turnover cotton sliver spinning-in structure of carding machine pre-drafting device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115501708A (en) * 2022-11-18 2022-12-23 河北北方学院 Dust collector based on design of rubbish hydrogen generation stove
CN115501708B (en) * 2022-11-18 2023-01-17 河北北方学院 Dust collector based on design of rubbish hydrogen generation stove

Also Published As

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US5419016A (en) 1995-05-30
CN1087139A (en) 1994-05-25
DE59308241D1 (en) 1998-04-16
EP0585196B1 (en) 1998-03-11

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