EP0381860A2 - Cleaning machine for textile fibres - Google Patents

Cleaning machine for textile fibres Download PDF

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Publication number
EP0381860A2
EP0381860A2 EP89123948A EP89123948A EP0381860A2 EP 0381860 A2 EP0381860 A2 EP 0381860A2 EP 89123948 A EP89123948 A EP 89123948A EP 89123948 A EP89123948 A EP 89123948A EP 0381860 A2 EP0381860 A2 EP 0381860A2
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EP
European Patent Office
Prior art keywords
roller
cleaning machine
machine according
transfer chambers
guide plates
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Granted
Application number
EP89123948A
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German (de)
French (fr)
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EP0381860B1 (en
EP0381860A3 (en
Inventor
René Schmid
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP0381860A2 publication Critical patent/EP0381860A2/en
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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
    • D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
    • D01G9/04—Opening or cleaning fibres, e.g. scutching cotton by means of beater arms

Definitions

  • the invention relates to a cleaning machine for textile fibers transported in a conveying air stream, with a horizontal roller with impact elements, with a predetermined diameter, under the underside of which bar gratings are arranged and over the top of which an inlet and the other end an outlet at the other end of the roller for the air flow and between the inlet and the outlet transfer chambers are arranged, which are delimited by guide plates, which form an acute pitch angle with a plane perpendicular to the roll axis, as well as by approximately vertical side walls and adjoining cover walls, and which limit the air flow rotating around the roll axis each forward about its own axial width in the axial direction, the cover walls being arranged like a terrace roof and enclosing obtuse angles with one another and with the side walls.
  • At least one such cleaning machine is known and available on the market. It serves to dissolve the fiber flakes supplied in the conveying air flow and to remove impurities from them. In the known machine, however, the dissolving effect and the production, in kg / h for a given size of the roller, are not always completely satisfactory.
  • the object of the invention is to design the cleaning machine specified at the outset in such a way that the dissolving effect is improved and higher production is made possible.
  • the cleaning machine according to the invention is therefore characterized in that at least four guide plates are present which delimit at least three transfer chambers.
  • the pitch angle which the guide plates form with a plane perpendicular to the roll axis is smaller than in the known machine, and it has surprisingly been found that the tendency towards clumping in the transfer chambers decreases with a decreasing pitch angle.
  • the pitch angle should not be chosen too small, since otherwise there is a risk of constipation. Suitable pitch angles are between 8 and 20 o , preferably between 10 and 17 o .
  • the larger number of transfer chambers also reduces the axial width of the individual transfer chambers, which also counteracts the accumulation of larger quantities of flakes in the transfer chambers.
  • the axial width of the transfer chambers naturally also depends on the length of the roller. If this length is relatively large, each transfer chamber can expediently be subdivided into subchambers by at least one partition wall parallel to the guide plates. As a result, the flake stream is divided into smaller partial streams when hiking through the transfer chambers.
  • the said obtuse angle in the range of 120 o to 140, and may be the top of the covering walls from the peripheral surface of the roller a
  • the cleaning machine shown in FIGS. 1 and 2 has a horizontal opening roller 1, which is rotatably mounted about its axis A in a housing 2 and the circumference of which is occupied with striking pins 3 in the usual way.
  • the roller 1 is rotated in operation by a drive motor, not shown, in the direction of the arrow.
  • Two bar grids 4, 5 are arranged under the underside of the roller 1.
  • the housing 2 Above the top of the roller 1, the housing 2 has an air inlet 6 at one end of the roller and an air outlet 7 at the other end of the roller.
  • the positions of the inlet 6 and the outlet 7, which are not visible here, are each different indicated by a broken line.
  • baffles 8, 9, 10, 11, 12, 13 are arranged in the housing 2, which are inclined to the roller axis A, so that they have a predetermined, with a plane E perpendicular to this axis A, form acute slope angle ⁇ described below.
  • the six baffles limit over the top of the roller 1 between the inlet 6 and the outlet 7 five transfer chambers 14, 15, 16, 17, 18, which each around the air flow rotating around the roller 1 about its own axial width b of 5 to 15 cm in the axial direction hand off.
  • the transfer chambers 14, 15, 16, 17 and 18 are otherwise also limited by housing walls running parallel to the roller axis A, namely by two approximately vertical side walls 21 and 22 and three cover walls 23, 24 and 25 adjacent to them.
  • the cover walls 23, 24 and 25 are arranged in the shape of a terrace roof, that is to say they form three sides of an isosceles trapezoid in vertical section, and they form obtuse angles ⁇ and ⁇ or ⁇ and ⁇ with one another and with the side walls 21 and 22, which are 120 to 140 o, preferably 135 each o .
  • the top, approximately horizontal cover wall 24 has a distance H from the circumferential surface of the roller 1, which is the same 1 12 to 1 5 , preferably about 1 7 , the diameter D of the roller 1.
  • the cleaning machine is supplied with flake-form textile fibers to be cleaned and dissolved in a conveying air flow through the inlet 6.
  • the conveying air with the fibers flows essentially six times around the underside of the roller 1 and between them one after the other through the five transfer chambers 14, 15, 16, 17, 18 above the top of the roller 1 and finally through the outlet 7 to the housing 2 leave.
  • the fiber flakes are processed and increasingly dissolved by the striking pins 3 and grids 4 and 5, and impurities are separated from the fibers, separated by the grates 4 and 5 and then removed by a suction line 19.
  • the fibers are then flung upwards into the next transfer chamber.
  • the cleaning machine according to the invention contains at least four baffles or three transfer chambers, preferably six baffles and five transfer chambers as shown.
  • baffles or nine transfer chambers should generally not be used, because otherwise the angle ⁇ , which the baffles form with plane E perpendicular to roller axis A, can become too small.
  • a small angle .alpha. Has been found to be favorable for avoiding the formation of fiber lumps, but there is a risk of the transfer chambers becoming blocked if the angle .alpha. Becomes too small.
  • the angle ⁇ can expediently be between 8 and 20 o , preferably between 10 and 17 o .
  • FIGS. 3 and 4 show a cleaning machine in a view similar to FIG. 2, in which the roller 1.1 or 1.2 is longer than the roller 1 in FIG. 2.
  • the cleaning machines according to FIGS. 3 and 4 again contain the six Baffles 8, 9, 10, 11, 12, 13, which limit the five transfer chambers 14, 15, 16, 17, 18. Due to the greater length of the rollers 1.1 and 1.2, the inclination angle ⁇ of the guide plates is also correspondingly larger, but its size is still in the range given above (8 to 20 o , preferably 10 to 17 o ). At the same time, due to the greater length of the rollers 1.1 and 1.2, the axial width b.1 and b.2 of each of the transfer chambers 14, 15, 16, 17, 18 in Fig. 3 and 4 become larger. Therefore, in FIG.
  • each of the transfer chambers is divided into two subchambers 14.1, 15.1, 16.1, 17.1, 18.1 by a partition wall 20 parallel to the guide plates.
  • the axial width bt of each sub-chamber is thus only about half as large as the axial width b.1 of the transfer chambers.
  • each of the transfer chambers is divided into three partial chambers by two partition walls 20 parallel to the guide plates, the axial width bt of which is still approximately equal to one third of the width b.2 of the transfer chambers.
  • the width of the subchambers should not be greater than about 15 cm, it can usefully be 5 to 15 cm. Due to the partition walls 20, the conveying air flow or flock flow in each transfer chamber is divided into smaller flows, thus reducing the risk of fiber clumping accordingly.
  • the dissolution of a lump twice as large offers more than double difficulties because the networking in the larger lump is more intensive.
  • Another feature of the cleaning machine described which also helps to avoid the formation of larger clumps of fiber, is the fact that the air inlet 6 is arranged in such a way that the conveying air flow entering through it and transporting the flakes of fiber from top to bottom is approximately tangential to the opening roller 1 runs in such a way that the air flow at the point where it meets the circumference of the roller has the same direction of movement as the circumference of the rotating roller 1.
  • the striking pins 3 on the roller 1 should therefore not move counter to the incoming conveying air stream.

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

Abstract

Die Maschine besitzt eine liegende, rotierende, mit Schlagstiften (3) besetzte Walze (1), unter deren Unterseite Stabroste angeordnet sind. Ein die Textilfasern in Flockenform transportierender Förderluftstrom wird durch einen Einlass (6) zugeführt, der bei einem Ende der Walze (1) über deren Oberseite angeordnet ist. Ein Auslass (7) für die die Fasern transportierende Luft ist beim anderen Ende der Walze (1) über deren Oberseite angeordnet. Zwischen dem Einlass (6) und dem Auslass (7) liegen über der Oberseite der Walze (1) mindestens drei, vorzugsweise fünf, Ueberleitkammern (14, 15, 16, 17, 18), die den um die Walzenachse (A) drehenden Luftstrom je etwa um ihre eigene axiale Breite (b) in Achsrichtung weiterleiten. Die Ueberleitkammern (14, 15, 16, 17, 18) sind von mindestens vier, vorzugsweise sechs, zur Walzenachse (A) schräg gestellten Leitplatten (8, 9, 10, 11, 12, 13) begrenzt. Dadurch, dass die Anzahl der Ueberleitkammern (14, 15, 16, 17, 18) bei vorgegebenem Steigungswinkel (α) und Kammerbreite (b) grösser ist als in bekannten Reinigungsmaschinen, werden Ansammlungen von grösseren Fasermengen und Faserklumpenbildungen in den Ueberleitkammern weitgehend vermieden.The machine has a horizontal, rotating roller (1) with impact pins (3), under the underside of which are arranged bar grids. A conveying air stream which transports the textile fibers in flake form is fed through an inlet (6) which is arranged at one end of the roller (1) above its upper side. An outlet (7) for the air transporting the fibers is arranged at the other end of the roller (1) above its upper side. Between the inlet (6) and the outlet (7) there are at least three, preferably five, transfer chambers (14, 15, 16, 17, 18) above the top of the roller (1), which hold the air flow rotating around the roller axis (A) forward each about their own axial width (b) in the axial direction. The transfer chambers (14, 15, 16, 17, 18) are delimited by at least four, preferably six, guide plates (8, 9, 10, 11, 12, 13) inclined to the roller axis (A). The fact that the number of transfer chambers (14, 15, 16, 17, 18) at a given pitch angle (α) and chamber width (b) is larger than in known cleaning machines, accumulations of larger quantities of fibers and fiber clumps in the transfer chambers are largely avoided.

Description

Die Erfindung bezieht sich auf eine Reini­gungsmaschine für in einem Förderluftstrom transpor­tierte Textilfasern, mit einer liegenden, mit Schlag­elementen besetzten Walze mit einem vorgegebenen Durch­messer, unter deren Unterseite Stabroste angeordnet sind und über deren Oberseite bei einem Ende der Walze ein Einlass und beim anderen Ende ein Auslass für den Luftstrom und zwischen dem Einlass und dem Auslass Ueberleitkammern angeordnet sind, die von Leitplatten, welche mit einer zur Walzenachse senkrechten Ebene einen spitzen Steigungswinkel bilden, sowie von etwa vertikalen Seitenwänden und an diese angrenzenden Ab­deckwänden begrenzt sind und die den um die Walzenachse drehenden Luftstrom je etwa um ihre eigene axiale Breite in Achsrichtung weiterleiten, wobei die Abdeckwände terrassendachförmig angeordnet sind und miteinander so­wie mit den Seitenwänden stumpfe Winkel einschliessen.The invention relates to a cleaning machine for textile fibers transported in a conveying air stream, with a horizontal roller with impact elements, with a predetermined diameter, under the underside of which bar gratings are arranged and over the top of which an inlet and the other end an outlet at the other end of the roller for the air flow and between the inlet and the outlet transfer chambers are arranged, which are delimited by guide plates, which form an acute pitch angle with a plane perpendicular to the roll axis, as well as by approximately vertical side walls and adjoining cover walls, and which limit the air flow rotating around the roll axis each forward about its own axial width in the axial direction, the cover walls being arranged like a terrace roof and enclosing obtuse angles with one another and with the side walls.

Mindestens eine solche Reinigungsmaschine ist bekannt und auf dem Markt erhältlich. Sie dient dazu, die im Förderluftstrom zugeführten Faserflocken aufzu­lösen und Verunreinigungen daraus zu entfernen. Bei der bekannten Maschine sind jedoch die Auflösewirkung und die Produktion, in kg/h bei einer gegebenen Grösse der Walze, nicht immer vollständig befriedigend.At least one such cleaning machine is known and available on the market. It serves to dissolve the fiber flakes supplied in the conveying air flow and to remove impurities from them. In the known machine, however, the dissolving effect and the production, in kg / h for a given size of the roller, are not always completely satisfactory.

Die Aufgabe der Erfindung besteht darin, die eingangs angegebene Reinigungsmaschine so auszubilden, dass die Auflösewirkung verbessert wird und eine höhere Produktion ermöglicht wird.The object of the invention is to design the cleaning machine specified at the outset in such a way that the dissolving effect is improved and higher production is made possible.

Es ist gefunden worden, dass sich in der be­kannten Maschine die schon teilweise aufgelösten Faser­flocken in den Ueberleitkammern gelegentlich wieder zu Klumpen sammeln, die dann erneut von der Walze aufge­löst werden müssen (wobei beim Auflösen solcher Klum­pen auch noch die Gefahr der Nissenbildung besteht), was auf eine entsprechende Führung der Fasern in den bekannten Ueberleitkammern zurückzuführen ist.It has been found that, in the known machine, the fiber flakes which have already been partially dissolved occasionally collect again in the transfer chambers to form lumps which then have to be broken up again by the roller (although there is still a risk of nits forming when such lumps are broken up), which can be attributed to a corresponding guidance of the fibers in the known transfer chambers.

Die erfindungsgemässe Reinigungsmaschine, mit der die angegebene Aufgabe gelöst wird, ist daher da­durch gekennzeichnet, dass mindestens vier Leitplatten vorhanden sind, die mindestens drei Ueberleitkammern begrenzen.The cleaning machine according to the invention, with which the stated object is achieved, is therefore characterized in that at least four guide plates are present which delimit at least three transfer chambers.

Zweckmässig können vier bis sieben, vorzugs­weise fünf, Ueberleitkammern vorhanden sein, die von fünf bis acht, vorzugsweise sechs, Leitplatten begrenzt sind.Four to seven, preferably five, transfer chambers which are delimited by five to eight, preferably six, guide plates can expediently be present.

Durch die grössere Zahl der Ueberleitkammern wird der Steigungswinkel, den die Leitplatten mit einer zur Walzenachse senkrechten Ebene bilden, kleiner als in der bekannten Maschine, und es hat sich überraschen­derweise gezeigt, dass mit kleiner werdendem Steigungs­winkel die Tendenz zur Klumpenbildung in den Ueberleit­kammern abnimmt. Allzu klein sollte der Steigungswinkel jedoch nicht gewählt werden, weil sonst eine Gefahr von Verstopfung auftritt. Geeignete Steigungswinkel liegen zwischen 8 und 20o, vorzugsweise zwischen 10 und 17o.Due to the larger number of transfer chambers, the pitch angle which the guide plates form with a plane perpendicular to the roll axis is smaller than in the known machine, and it has surprisingly been found that the tendency towards clumping in the transfer chambers decreases with a decreasing pitch angle. However, the pitch angle should not be chosen too small, since otherwise there is a risk of constipation. Suitable pitch angles are between 8 and 20 o , preferably between 10 and 17 o .

Zusätzlich wird durch die grössere Zahl der Ueberleitkammern auch die axiale Breite der einzelnen Ueberleitkammern kleiner, was ebenfalls der Ansammlung von grösseren Flockenmengen in den Ueberleitkammern entgegenwirkt. Die axiale Breite der Ueberleitkammern hängt natürlich auch von der Länge der Walze ab. Wenn diese Länge relativ gross ist, kann zweckmässig jede Ueberleitkammer durch wenigstens eine zu den Leitplat­ten parallele Unterteilungswand in Teilkammern unter­teilt sein. Dadurch wird dann der Flockenstrom beim Wandern durch die Ueberleitkammern in kleinere Teil­ströme unterteilt.In addition, the larger number of transfer chambers also reduces the axial width of the individual transfer chambers, which also counteracts the accumulation of larger quantities of flakes in the transfer chambers. The axial width of the transfer chambers naturally also depends on the length of the roller. If this length is relatively large, each transfer chamber can expediently be subdivided into subchambers by at least one partition wall parallel to the guide plates. As a result, the flake stream is divided into smaller partial streams when hiking through the transfer chambers.

Ausserdem können die genannten stumpfen Winkel im Bereich von 120 bis 140o liegen und kann die oberste der Abdeckwände von der Umfangsfläche der Walze einen Abstand haben, der gleich 1 12

Figure imgb0001
bis 1 5
Figure imgb0002
 des Durchmessers der Walze ist, was bei einem vorgegebenen und der Ma­schine angepassten Luftdurchsatz den Vorteil einer der­artigen Faserflockenführung bringt, dass die Flocken ohne Klumpenbildung und mit einem gewünschten Aufschlag gegen die Abdeckwände geführt werden, wodurch der Rei­nigungseffekt erhöht wird.In addition, the said obtuse angle in the range of 120 o to 140, and may be the top of the covering walls from the peripheral surface of the roller a Have the same distance 1 12
Figure imgb0001
 to 1 5
Figure imgb0002
 of the diameter of the roller, which, with a given air throughput adapted to the machine, has the advantage of such fiber flake guidance that the flakes are guided against the cover walls without lump formation and with a desired impact, which increases the cleaning effect.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. In dieser zeigen:

  • Fig. 1 eine Reinigungsmaschine schematisch im Vertikalschnitt nach der Linie I-I in Fig. 2,
  • Fig. 2 eine schematische Draufsicht auf die Reinigungsmaschine gemäss Fig. 1 ohne die Abdeckwände und
  • Fig. 3 und Fig. 4 je in einer Ansicht ähnlich wie Fig. 2 jeweils eine Variante.
Embodiments of the invention are explained below with reference to the drawing. In this show:
  • 1 is a cleaning machine schematically in vertical section along the line II in Fig. 2,
  • Fig. 2 is a schematic plan view of the cleaning machine according to FIG. 1 without the cover walls and
  • 3 and 4 each show a variant in a view similar to FIG. 2.

Die in den Fig. 1 und 2 dargestellte Reini­gungsmaschine besitzt eine liegende Auflösewalze 1, die in einem Gehäuse 2 um ihre Achse A drehbar gelagert ist und deren Umfang in üblicher Weise mit Schlagstiften 3 besetzt ist. Die Walze 1 wird im Betrieb von einem nicht dargestellten Antriebsmotor in Pfeilrichtung ge­dreht. Unter der Unterseite der Walze 1 sind zwei Stab­roste 4, 5 angeordnet. Ueber der Oberseite der Walze 1 besitzt das Gehäuse 2 bei einem Ende der Walze einen Lufteinlass 6 und beim anderen Ende der Walze einen Luftauslass 7. In Fig. 2 sind die Lagen des Einlasses 6 und des Auslasses 7, die hier nicht sichtbar sind, je mit einer unterbrochenen Linie angedeutet. Zwischen dem Einlass 6 und dem Auslass 7 sind im Gehäuse 2 sechs Leitbleche 8, 9, 10, 11, 12, 13 angeordnet, die zur Walzenachse A schräg gestellt sind, so dass sie mit einer zu dieser Achse A senkrechten Ebene E einen vorgegebenen, im Nachstehenden beschriebenen spitzen Steigungswinkel α bilden. Die sechs Leitbleche begrenzen über der Oberseite der Walze 1 zwischen dem Einlass 6 und dem Auslass 7 fünf Ueberleitkammern 14, 15, 16, 17, 18, welche den um die Walze 1 drehenden Luftstrom je etwa um ihre eigene axiale Breite b von 5 bis 15 cm in Achsrichtung weiterleiten.The cleaning machine shown in FIGS. 1 and 2 has a horizontal opening roller 1, which is rotatably mounted about its axis A in a housing 2 and the circumference of which is occupied with striking pins 3 in the usual way. The roller 1 is rotated in operation by a drive motor, not shown, in the direction of the arrow. Two bar grids 4, 5 are arranged under the underside of the roller 1. Above the top of the roller 1, the housing 2 has an air inlet 6 at one end of the roller and an air outlet 7 at the other end of the roller. In FIG. 2, the positions of the inlet 6 and the outlet 7, which are not visible here, are each different indicated by a broken line. Between the inlet 6 and the outlet 7, six baffles 8, 9, 10, 11, 12, 13 are arranged in the housing 2, which are inclined to the roller axis A, so that they have a predetermined, with a plane E perpendicular to this axis A, form acute slope angle α described below. The six baffles limit over the top of the roller 1 between the inlet 6 and the outlet 7 five transfer chambers 14, 15, 16, 17, 18, which each around the air flow rotating around the roller 1 about its own axial width b of 5 to 15 cm in the axial direction hand off.

Die Ueberleitkammern 14, 15, 16, 17 und 18 sind im übrigen auch durch parallel zur Walzenachse A verlaufende Gehäusewände begrenzt, nämlich durch zwei etwa vertikale Seitenwände 21 und 22 und drei an diese angrenzende Abdeckwände 23, 24 und 25. Die Abdeckwände 23, 24 und 25 sind terrassendachförmig angeordnet, das heisst, sie bilden im Vertikalschnitt drei Seiten eines gleichschenkligen Trapezes, und sie schliessen miteinander und mit den Seitenwänden 21 und 22 stumpfe Winkel γ und δ bzw. β und ε ein, welche 120 bis 140o vorzugsweise je 135o, betragen. Die oberste, etwa hori­zontale Abdeckwand 24 hat von der Umfangsfläche der Walze 1 einen Abstand H, der gleich 1 12

Figure imgb0003
bis 1 5
Figure imgb0004
, vorzugs­weise etwa 1 7
Figure imgb0005
, des Durchmessers D der Walze 1 ist.The transfer chambers 14, 15, 16, 17 and 18 are otherwise also limited by housing walls running parallel to the roller axis A, namely by two approximately vertical side walls 21 and 22 and three cover walls 23, 24 and 25 adjacent to them. The cover walls 23, 24 and 25 are arranged in the shape of a terrace roof, that is to say they form three sides of an isosceles trapezoid in vertical section, and they form obtuse angles γ and δ or β and ε with one another and with the side walls 21 and 22, which are 120 to 140 o, preferably 135 each o . The top, approximately horizontal cover wall 24 has a distance H from the circumferential surface of the roller 1, which is the same 1 12
Figure imgb0003
 to 1 5
Figure imgb0004
 , preferably about 1 7
Figure imgb0005
 , the diameter D of the roller 1.

Im Betrieb werden der Reinigungsmaschine zu reinigende und aufzulösende Textilfasern in Flockenform in einem Förderluftstrom durch den Einlass 6 zugeführt. Die Förderluft mit den Fasern strömt im wesentlichen sechsmal um die Unterseite der Walze 1 herum und dazwi­schen jeweils nacheinander durch die fünf Ueberleitkam­mern 14, 15, 16, 17, 18 über der Oberseite der Walze 1, um das Gehäuse 2 schliesslich durch den Auslass 7 zu verlassen. Beim Herumlaufen um die Unterseite der Walze 1 werden die Faserflocken durch die Schlagstifte 3 und Roste 4 und 5 bearbeitet und zunehmend aufgelöst, und Verunreinigungen werden von den Fasern getrennt, durch die Roste 4 und 5 hindurch abgeschieden und dann durch eine Absaugleitung 19 entfernt. Danach werden die Fa­sern jeweils nach oben in die nächstfolgende Ueberleit­kammer geschleudert.In operation, the cleaning machine is supplied with flake-form textile fibers to be cleaned and dissolved in a conveying air flow through the inlet 6. The conveying air with the fibers flows essentially six times around the underside of the roller 1 and between them one after the other through the five transfer chambers 14, 15, 16, 17, 18 above the top of the roller 1 and finally through the outlet 7 to the housing 2 leave. When running around the underside of the roller 1, the fiber flakes are processed and increasingly dissolved by the striking pins 3 and grids 4 and 5, and impurities are separated from the fibers, separated by the grates 4 and 5 and then removed by a suction line 19. The fibers are then flung upwards into the next transfer chamber.

Durch die geeignete Wahl des Steigungswinkels α, der Breite b und der Anzahl der Ueberleitkammern, je in den in dieser Beschreibung angegebenen Bereichen, werden Faseransammlungen und Faserklumpenbildungen in den Ueberleitkammern weitgehend vermieden. Wenn, wie in bekannten Reinigungsmaschinen, nur drei Leitbleche bzw. zwei Ueberleitkammern vorhanden sind, werden zu grosse Flockenmengen an den schräg gestellten Kammer­wänden gesammelt und als Klumpen wieder der Auflösewal­ze zugeführt, die dann beinahe wieder von vorn mit der Auflösung beginnen muss. Daher enthält die erfindungs­gemässe Reinigungsmaschine wenigstens vier Leitbleche bzw. drei Ueberleitkammern, vorzugsweise wie gezeich­net sechs Leitbleche und fünf Ueberleitkammern. Mehr als zehn Leitbleche bzw. neun Ueberleitkammern sollten in der Regel nicht verwendet werden, weil sonst der Winkel α, den die Leitbleche mit der zur Walzenachse A senk­rechten Ebene E bilden, zu klein werden kann. Ein klei­ner Winkel α ist zwar, wie gefunden wurde, günstig für die Vermeidung von Faserklumpenbildungen, jedoch ent­steht eine Gefahr der Verstopfung der Ueberleitkammern, wenn der Winkel α allzu klein wird. Zweckmässig kann der Winkel α zwischen 8 und 20o liegen, vorzugsweise zwischen 10 und 17o.Through the appropriate choice of the pitch angle α, the width b and the number of transfer chambers, depending on the ranges specified in this description, fiber accumulations and fiber clump formation in the transfer chambers are largely avoided. If, as in known cleaning machines, there are only three baffles or two transfer chambers, excessive amounts of flakes are collected on the inclined chamber walls and fed back to the opening roller as lumps, which then almost have to start again from the beginning. Therefore, the cleaning machine according to the invention contains at least four baffles or three transfer chambers, preferably six baffles and five transfer chambers as shown. More than ten baffles or nine transfer chambers should generally not be used, because otherwise the angle α, which the baffles form with plane E perpendicular to roller axis A, can become too small. A small angle .alpha. Has been found to be favorable for avoiding the formation of fiber lumps, but there is a risk of the transfer chambers becoming blocked if the angle .alpha. Becomes too small. The angle α can expediently be between 8 and 20 o , preferably between 10 and 17 o .

Die Fig. 3 und 4 zeigen in einer ähnlichen An­sicht wie Fig. 2 je eine Reinigungsmaschine, in der die Walze 1.1 bzw. 1.2 länger ist als die Walze 1 in Fig. 2. Die Reinigungsmaschinen gemäss Fig. 3 und 4 enthalten wieder die sechs Leitbleche 8, 9, 10, 11, 12, 13, wel­che die fünf Ueberleitkammern 14, 15, 16, 17, 18 begren­zen. Durch die grössere Länge der Walzen 1.1 bzw. 1.2 ist der Schrägstellungswinkel α der Leitbleche auch entsprechend grösser, seine Grösse liegt aber immer noch im vorstehend angegebenen Bereich (8 bis 20o, vor­zugsweise 10 bis 17o). Gleichzeitig ist durch die grös­sere Länge der Walzen 1.1 bzw. 1.2 auch die axiale Breite b.1 bzw. b.2 jeder der Ueberleitkammern, 14, 15, 16, 17, 18 in Fig. 3 und 4 grösser geworden. Daher ist in Fig. 3 jede der Ueberleitkammern durch je eine zu den Leitblechen parallele Unterteilungswand 20 in zwei Teilkammern 14.1, 15.1, 16.1, 17.1, 18.1 unterteilt. Die axiale Breite bt jeder Teilkammer ist damit nur etwa halb so gross wie die axiale Breite b.1 der Ueber­leitkammern. In Fig. 4 ist jede der Ueberleitkammern durch je zwei zu den Leitblechen parallele Unterteilungs­wände 20 in drei Teilkammern unterteilt, deren axiale Breite bt noch etwa gleich einem Drittel der Breite b.2 der Ueberleitkammern ist. Die Breite der Teilkammern sollte nicht grösser als etwa 15 cm sein, sie kann zweckmässig 5 bis 15 cm betragen. Durch die Untertei­lungswände 20 wird der Förderluftstrom bzw. Flocken­strom in jeder Ueberleitkammer in kleinere Ströme un­terteilt, womit die Gefahr der Faserklumpenbildung ent­sprechend reduziert wird. Die Auflösung eines doppelt so grossen Klumpens bietet mehr als doppelte Schwierig­keiten, weil die Vernetzung im grösseren Klumpen inten­siver ist.3 and 4 show a cleaning machine in a view similar to FIG. 2, in which the roller 1.1 or 1.2 is longer than the roller 1 in FIG. 2. The cleaning machines according to FIGS. 3 and 4 again contain the six Baffles 8, 9, 10, 11, 12, 13, which limit the five transfer chambers 14, 15, 16, 17, 18. Due to the greater length of the rollers 1.1 and 1.2, the inclination angle α of the guide plates is also correspondingly larger, but its size is still in the range given above (8 to 20 o , preferably 10 to 17 o ). At the same time, due to the greater length of the rollers 1.1 and 1.2, the axial width b.1 and b.2 of each of the transfer chambers 14, 15, 16, 17, 18 in Fig. 3 and 4 become larger. Therefore, in FIG. 3 each of the transfer chambers is divided into two subchambers 14.1, 15.1, 16.1, 17.1, 18.1 by a partition wall 20 parallel to the guide plates. The axial width bt of each sub-chamber is thus only about half as large as the axial width b.1 of the transfer chambers. In FIG. 4, each of the transfer chambers is divided into three partial chambers by two partition walls 20 parallel to the guide plates, the axial width bt of which is still approximately equal to one third of the width b.2 of the transfer chambers. The width of the subchambers should not be greater than about 15 cm, it can usefully be 5 to 15 cm. Due to the partition walls 20, the conveying air flow or flock flow in each transfer chamber is divided into smaller flows, thus reducing the risk of fiber clumping accordingly. The dissolution of a lump twice as large offers more than double difficulties because the networking in the larger lump is more intensive.

Eine weiteres Merkmal der beschriebenen Reini­gungsmaschine, welches ebenfalls dazu beiträgt, die Bildung grösserer Faserklumpen zu vermeiden, ist die Tatsache, dass der Lufteinlass 6 so angeordnet ist, dass der durch diesen eintretende, die Faserflocken transportierende Förderluftstrom von oben nach unten etwa tangential zur Auflösewalze 1 verläuft, und zwar derart, dass der Luftstrom an der Stelle, wo er den Walzenumfang trifft, die gleiche Bewegungsrichtung hat wie der Umfang der rotierenden Walze 1. Die Schlag­stifte 3 auf der Walze 1 sollen sich also nicht ent­gegengesetzt zum eintretenden Förderluftstrom bewegen.Another feature of the cleaning machine described, which also helps to avoid the formation of larger clumps of fiber, is the fact that the air inlet 6 is arranged in such a way that the conveying air flow entering through it and transporting the flakes of fiber from top to bottom is approximately tangential to the opening roller 1 runs in such a way that the air flow at the point where it meets the circumference of the roller has the same direction of movement as the circumference of the rotating roller 1. The striking pins 3 on the roller 1 should therefore not move counter to the incoming conveying air stream.

Claims (11)

1. Reinigungsmaschine für in einem Förderluft­strom transportierte Textilfasern, mit einer liegenden, mit Schlagelementen (3) besetzten Walze (1) mit einem vorgegebenen Durchmesser (D), unter deren Unterseite Stabroste (4, 5) angeordnet sind und über deren Ober­seite bei einem Ende der Walze (1) ein Einlass (6) und beim anderen Ende ein Auslass (7) für den Luftstrom und zwischen dem Einlass (6) und dem Auslass (7) Ueber­leitkammern (14, 15, 16, 17, 18) angeordnet sind, die von Leitplatten (8, 9, 10, 11, 12, 13), welche mit einer zur Walzenachse (A) senkrechten Ebene (E) einen spitzen Steigungswinkel (α) bilden, sowie von etwa vertikalen Seitenwänden (21, 22) und an diese angren­zenden Abdeckwänden (23, 24, 25) begrenzt sind und die den um die Walzenachse (A) drehenden Luftstrom je etwa um ihre eigene axiale Breite (b) in Achsrichtung weiterleiten, wobei die Abdeckwände (23, 24, 25) ter­rassendachförmig angeordnet sind und miteinander sowie mit den Seitenwänden (21, 22) stumpfe Winkel (β, γ, δ, ε) einschliessen, dadurch gekennzeichnet, dass mindestens vier Leitplatten (8, 9, 10, 11, 12, 13) vorhanden sind, die mindestens drei Ueberleitkammern (14, 15, 16, 17, 18) begrenzen.1. Cleaning machine for textile fibers transported in a conveying air stream, with a horizontal roller (1) with impact elements (3) and a predetermined diameter (D), under the underside of which bar grids (4, 5) are arranged and over the top of which at one end the roller (1) has an inlet (6) and at the other end an outlet (7) for the air flow and transfer chambers (14, 15, 16, 17, 18) are arranged between the inlet (6) and the outlet (7), those of guide plates (8, 9, 10, 11, 12, 13), which form an acute angle of inclination (α) with a plane (E) perpendicular to the roller axis (A), and of approximately vertical side walls (21, 22) and on these adjoining cover walls (23, 24, 25) are limited and each pass on the air flow rotating about the roller axis (A) approximately by its own axial width (b) in the axial direction, the cover walls (23, 24, 25) being arranged like a terrace roof and with each other and with the side walls (21, 22) s Include obtuse angles (β, γ, δ, ε), characterized in that there are at least four guide plates (8, 9, 10, 11, 12, 13) which have at least three transfer chambers (14, 15, 16, 17, 18 ) limit. 2. Reinigungsmaschine nach Anspruch 1, da­durch gekennzeichnet, dass drei bis neun Ueberleitkam­mern (14, 15, 16, 17, 18) vorhanden sind, die von vier bis zehn Leitplatten (8, 9, 10, 11, 12, 13) begrenzt sind.2. Cleaning machine according to claim 1, characterized in that three to nine transfer chambers (14, 15, 16, 17, 18) are present, which are limited by four to ten guide plates (8, 9, 10, 11, 12, 13) . 3. Reinigungsmaschine nach Anspruch 2, da­durch gekennzeichnet, dass vier bis sieben, vorzugs­weise fünf, Ueberleitkammern (14, 15, 16, 17, 18) vor­handen sind, die von fünf bis acht, vorzugsweise sechs, Leitplatten (8, 9, 10, 11, 12, 13) begrenzt sind.3. Cleaning machine according to claim 2, characterized in that four to seven, preferably five, transfer chambers (14, 15, 16, 17, 18) are present, which have five to eight, preferably six, guide plates (8, 9, 10, 11, 12, 13) are limited. 4. Reinigungsmaschine nach einem der Ansprü­che 1 bis 3, dadurch gekennzeichnet, dass der Stei­gungswinkel (α), den die Leitplatten (8, 9, 10, 11, 12, 13) mit einer zur Walzenachse (A) senkrechten Ebene (E) bilden, zwischen 8 und 20o liegt, vorzugsweise zwischen 10 und 17o.4. Cleaning machine according to one of claims 1 to 3, characterized in that the pitch angle (α) that the guide plates (8, 9, 10, 11, 12, 13) form with a plane (E) perpendicular to the roller axis (A) , is between 8 and 20 o , preferably between 10 and 17 o . 5. Reinigungsmaschine nach einem der Ansprü­che 1 bis 4, dadurch gekennzeichnet, dass die axiale Breite (b) der Ueberleitkammern (14, 15, 16, 17, 18) zwischen 5 und 15 cm liegt.5. Cleaning machine according to one of claims 1 to 4, characterized in that the axial width (b) of the transfer chambers (14, 15, 16, 17, 18) is between 5 and 15 cm. 6. Reinigungsmaschine nach einem der Ansprü­che 1 bis 4, dadurch gekennzeichnet, dass eine Ueber­leitkammer (14, 15, 16, 17, 18) durch wenigstens eine zu den Leitplatten (8, 9, 10, 11, 12, 13) parallele Unterteilungswand (20) in Teilkammern unterteilt ist.6. Cleaning machine according to one of claims 1 to 4, characterized in that a transfer chamber (14, 15, 16, 17, 18) through at least one partition wall parallel to the guide plates (8, 9, 10, 11, 12, 13) ( 20) is divided into subchambers. 7. Reinigungsmaschine nach Anspruch 6, da­durch gekennzeichnet, dass die axiale Breite jeder Teilkammer (14.1 - 18.1; 14.2 - 18.2) zwischen 5 und 15 cm liegt.7. Cleaning machine according to claim 6, characterized in that the axial width of each partial chamber (14.1 - 18.1; 14.2 - 18.2) is between 5 and 15 cm. 8. Reinigungsmaschine nach einem der Ansprü­che 1 bis 7, dadurch gekennzeichnet, dass der Luftein­lass (6) so angeordnet ist, dass die zugeführte Luft etwa tangential an eine Seite der Walze (1) strömt, welche Seite sich bei Drehung der Walze in gleicher Richtung wie die zugeführte Luft bewegt.8. Cleaning machine according to one of claims 1 to 7, characterized in that the air inlet (6) is arranged such that the supplied air flows approximately tangentially to one side of the roller (1), which side turns in the same direction when the roller rotates how the supplied air moves. 9. Reinigungsmaschine nach Anspruch 8, da­durch gekennzeichnet, dass der Lufteinlass (6) so an­geordnet ist, dass die zugeführte Luft von oben nach unten an die genannte Seite der Walze (1) strömt.9. Cleaning machine according to claim 8, characterized in that the air inlet (6) is arranged so that the supplied air flows from top to bottom to said side of the roller (1). 10. Reinigungsmaschine nach einem der Ansprü­che 1 bis 9, dadurch gekennzeichnet, dass die genannten stumpfen Winkel (β, γ, δ, ε) im Bereich von 120 bis 140o liegen und vorzugsweise etwa 135o betragen.10. Cleaning machine according to one of claims 1 to 9, characterized in that the said obtuse angle (β γ, δ, ε) o be in the range of 120 to 140 preferably approximately be 135 o. 11. Reinigungsmaschine nach einem der Ansprü­che 1 bis 10, dadurch gekennzeichnet, dass die oberste der Abdeckwände (24) von der Umfangsfläche der Walze (1) einen Abstand (H) hat, der gleich 1 12
Figure imgb0006
 bis 1 5
Figure imgb0007
, vor­zugsweise etwa gleich 1 7
Figure imgb0008
, des Durchmessers (D) der Walze (1) ist.11. Cleaning machine according to one of claims 1 to 10, characterized in that the top of the cover walls (24) from the peripheral surface of the roller (1) has a distance (H) equal to 1 12
Figure imgb0006
 to 1 5
Figure imgb0007
 , preferably about the same 1 7
Figure imgb0008
 , the diameter (D) of the roller (1).
EP89123948A 1989-01-31 1989-12-27 Cleaning machine for textile fibres Expired - Lifetime EP0381860B1 (en)

Applications Claiming Priority (2)

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CH31989 1989-01-31
CH319/89 1989-01-31

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EP (1) EP0381860B1 (en)
JP (1) JP2839616B2 (en)
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Cited By (5)

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EP0464441A1 (en) * 1990-07-02 1992-01-08 Maschinenfabrik Rieter Ag Method and apparatus for cleaning cotton fibres
DE19630018A1 (en) * 1996-07-25 1998-01-29 Rieter Ag Maschf Assembly especially for use in processing cotton fibre materials
US6029317A (en) * 1997-04-22 2000-02-29 Maschinenfabrik Rieter Ag Spinning preparation device
EP2336405A1 (en) 2009-12-17 2011-06-22 Maschinenfabrik Rieter AG Cleaning device for fiber flock
EP3431641A1 (en) 2017-07-17 2019-01-23 Maschinenfabrik Rieter AG Cleaning device

Families Citing this family (4)

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CH681457A5 (en) * 1990-03-23 1993-03-31 Rieter Ag Maschf
US5237727A (en) * 1990-07-02 1993-08-24 Maschinenfabrik Rieter Ag Adjustable cleaning of fibers in a spiralled air path and apparatus
DE59711965D1 (en) 1996-05-20 2004-11-04 Rieter Ag Maschf Plant for processing fibers
DE502005005719D1 (en) * 2004-11-04 2008-11-27 Rieter Ag Maschf CLEANING DEVICE FOR FIBER FLAKES

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DE1094640B (en) * 1956-06-11 1960-12-08 U Appbau Hergeth K G Maschf Step cleaner for fiber material, especially cotton
GB843726A (en) * 1957-08-02 1960-08-10 Johns Manville Apparatus for opening and cleaning fibrous masses
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Publication number Priority date Publication date Assignee Title
EP0464441A1 (en) * 1990-07-02 1992-01-08 Maschinenfabrik Rieter Ag Method and apparatus for cleaning cotton fibres
DE19630018A1 (en) * 1996-07-25 1998-01-29 Rieter Ag Maschf Assembly especially for use in processing cotton fibre materials
US6029317A (en) * 1997-04-22 2000-02-29 Maschinenfabrik Rieter Ag Spinning preparation device
EP2336405A1 (en) 2009-12-17 2011-06-22 Maschinenfabrik Rieter AG Cleaning device for fiber flock
EP3431641A1 (en) 2017-07-17 2019-01-23 Maschinenfabrik Rieter AG Cleaning device

Also Published As

Publication number Publication date
EP0381860B1 (en) 1996-02-07
US4969237A (en) 1990-11-13
JPH02234919A (en) 1990-09-18
JP2839616B2 (en) 1998-12-16
DE58909599D1 (en) 1996-03-21
EP0381860A3 (en) 1990-08-22

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