CH341596A

CH341596A - Machine for cleaning fibers

Info

Publication number: CH341596A
Authority: CH
Inventors: Mayer Mayer Jr; I Kotter James
Original assignee: Dodd & Sons Limited S
Priority date: 1957-01-10
Filing date: 1958-01-09
Publication date: 1959-10-15

Description

Machirre pour nettoyer des fibres La presente invention a pour objet une machirre pour nettoyer des fibres et, plus particulierement, pour s6parer les impuretes plus lourdes que les fibres, telles que dechets de branches, de graines, etc., des fibres de coton 6grene. Machirre for cleaning fibers The present invention relates to a machirre for cleaning fibers and, more particularly, for separating impurities heavier than fibers, such as waste branches, seeds, etc., from 6grene cotton fibers.

Cette machirre est caracteris6e en ce qu'elle com- prend un cylind're rotatif de traitement de fibres et un cylindre de peignage mont6 ä proximite du cy- lindre de traitement, les Parties en regard de ces deux cylindres se d6plagant dans la meine direction, un dispositif pour insuffler de fair, ä travers 1e cylindre de peignage, dans une zone adjacente au cylindre de traitement, et des conduits pour 6vacuer les dechets et les fibres du cylindre de traitement et du cylindre de peignage, le conduit pour la fibre aboutissant ä une zone Jans laquelle la Pression d'air est. inf6rieure ä celle de la zone ä laquelle aboutit le conduit de dechets. This jaw is characterized in that it comprises a rotating fiber treatment cylinder and a combing cylinder mounted close to the treatment cylinder, the parts facing these two cylinders moving in the same direction. , means for air blowing through the combing cylinder into an area adjacent to the treatment cylinder, and ducts for discharging waste and fibers from the treatment cylinder and the combing cylinder, the fiber duct leading to an area in which the air pressure is. less than that of the area to which the waste pipe leads.

Le dessin annexe repr6sente, ä titre d'exemple, une forme d'ex6cution de la machirre faisant 1'objet de la pr6sente invention. The appended drawing shows, by way of example, one form of execution of the jaw forming the subject of the present invention.

La fig. 1 en est une vue partielle en perspective et en coupe partielle. fig. 1 is a partial view in perspective and in partial section.

La fig. 2 en est une vue en coupe selon II-II de la fig. 1. fig. 2 is a sectional view along II-II of FIG. 1.

La machirre repr6sentee comprend un cylindre rotatif de traitement de fibres 10, sur lequel les fibres sont amenees par un moyen connu quelconque. The machirre represented comprises a rotating fiber processing cylinder 10, onto which the fibers are fed by any known means.

Un cylindre de peignage rotatif 15 est monte parallelement et de fagon adjacente au cylindre .10 de maniere que les Parties en regard des cylindres de traitement et de peignage se d6placent dans la meine direction. Le cylindre de peignage est muni de brosses radiales 16 ä sa p6ripherie, ces brosses se deplarant au voisinage du cylindre 10, mais sans toutefois entrer en contact avec ce dernier. La vitesse p6ripherique du cylindre de peignage est plus e1ev6e que celle du cylindre de traitement. Le cylindre de peignage est fixe Sur un arbre 17 qui fait saillie ä 1'ext6rieur de la machirre et est reli6 ä un dispositif d' entrainement quelconque, non repr6sent6, tel qu'une poulie soumise ä 1'action dune courroie, cet arbre 6tant monte de fagon rotative dans des rou- lements 18, la bague de roulement ext6rieure 6tant solidaire (Tun bäti fixe 20. Un carter 25 entoure 1e cylindre de peignage et pr6sente une Partie ou- verte au voisinage du cylindre de traitement, comme represent6 en fig. 1. Le cylindre de peignage est en grande Partie creux, les brosses etant mont6es sur un chässis ä croisillons 26. De PairRTI ID="0001.0270" WI="12" HE="4" LX="1728" LY="1885"> p6netre ä 1'int6rieur du carter par des orifices 27 et 28 se trouvant respectivement ä chaque extr6mite du cy- lindre et, de 1ä, ä 1'int6rieur du cylindre d'oü il ressort radialement entre les brosses et s'6chappe par la Partie ouverte du carter. La quantit6 d'air admise par les ouvertures 27 et 28 peut etre reg16e au moyen de manchons coulissants 29 et 30 respecti- vement. A rotatable combing cylinder 15 is mounted parallel and adjacent to cylinder 10 so that the facing portions of the processing and combing cylinders move in the same direction. The combing cylinder is provided with radial brushes 16 at its periphery, these brushes moving in the vicinity of the cylinder 10, but without however coming into contact with the latter. The peripheral speed of the combing roll is higher than that of the treatment roll. The combing cylinder is fixed on a shaft 17 which protrudes outside the jaw and is connected to any drive device, not shown, such as a pulley subjected to the action of a belt, this shaft being rotatably mounted in bearings 18, the outer bearing race being integral with a fixed frame 20. A casing 25 surrounds the combing cylinder and has an open part in the vicinity of the treatment cylinder, as shown in FIG. 1. The combing cylinder is largely hollow, the brushes being mounted on a 26 cross-brace frame. "> enters the inside of the casing through orifices 27 and 28 located respectively at each end of the cylinder and, from there, inside the cylinder from where it emerges radially between the brushes and escapes through the open portion of the housing The amount of air admitted through the openings 27 and 28 can be regulated by means of sliding sleeves 29 and 30 respectively.

Les cylindres de traitement et de peignage per- mettent d'6carter ou de d6faire la fibre contenant des d6chets de Sorte que les. particules de d6chets sont plus facilement s6parees des fibres. L'ecarte- ment des fibres r6sulte du mouvement rapide des brosses 16 qui agissent Sur les fibres depos6es ä la surface du cylindre de traitement 10 et d6tachent ces fibres de ce dernier cylindre qui se d6place plus lentement. En raison des forces d'inertie et de la r6sistance ä la friction des fibres retenues Sur 1e cylindre de traitement, Ges dernieres n' atteignent pas instantanement la vitesse des brosses de Sorte que les fibres se defont dans Fintervalle d'acc61e- ration des fibres. Tandis que les brosses avancent, Fair sortant par la Partie ouverte du carter 25 forme des tourbillons et acheve de demeler les fibres en detachant completement les fibres retenues 1e plus fermement. The treatment and combing cylinders make it possible to separate or undo the fiber containing waste so that the. waste particles are more easily separated from the fibres. The separation of the fibers results from the rapid movement of the brushes 16 which act on the fibers deposited on the surface of the treatment cylinder 10 and detach these fibers from this latter cylinder which moves more slowly. Due to the forces of inertia and the frictional resistance of the fibers held on the treatment cylinder, the latter do not instantaneously reach the speed of the brushes so that the fibers come apart in the fiber acceleration range. . As the brushes advance, air exiting through the open portion of the housing 25 forms whirlpools and completes the disentangling of the fibers by completely detaching the most firmly held fibers.

L'air entrainant les fibres du cylindre de traite- ment penUre dans Pouverture 35 d'un conduit principal 36. Un deflecteur 37, dispose pres de cette ouverture, divise 1e conduit principal en un conduit 38 pour les dechets et un conduit 39 pour les fibres. Le d6flecteur est articu16 en 40 de Sorte qu'il peut eire d6plac6 de fagon ä d6terminer les dimensions relatives effectives des conduits 38 et 39. The air entraining the fibers from the treatment cylinder enters the opening 35 of a main duct 36. A baffle 37, located near this opening, divides the main duct into a duct 38 for the waste and a duct 39 for the waste. fibers. The deflector is hinged at 40 so that it can be moved to determine the effective relative sizes of the conduits 38 and 39.

Le conduit 38, evaeuant les dechets, p6netre dans une boite ä d6chets 45 munie d'un transporteur ä vis saus fin dispose dans son fond pour evacuer les d6chets qui s'y accumulent. Le conduit transporteur de fibres est reli6 ä une zone dans laquelle la Pres sion est inf6rieure ä Gelle qui regne dans la boite ä dechets, par exemple vers un aspirateur (non repr6- sente) permettant 1e transfert de la fibre nettoyee ä Fendroit d@sir6. The duct 38, evaeuant the waste, enters a waste box 45 provided with a screw conveyor without end arranged in its bottom to evacuate the waste which accumulates there. The fiber transport duct is connected to a zone in which the pressure is lower than the pressure prevailing in the waste box, for example to a vacuum cleaner (not shown) allowing the transfer of the cleaned fiber to the desired location. .

Ce dispositif est con@u de fagon telle que 1e conduit transporteur de d6chets se trouve dans une Position tangentielle plus rapproch6e du cylindre de traitement de fibres que 1e conduit de transport de fibres. Les d & hets plus lourds ont tendance ä s'dcouler dans 1e conduit de transport de ddchets, tandis que les fibres plus 16geres seront d6flechies par 1e courant d'air dans 1e conduit de transport de fibres. Le r6glage du d6flecteur 37 aide ä obtenir une division convenable du courant d'air. This device is designed such that the waste transport conduit is in a closer tangential position to the fiber treatment cylinder than the fiber transport conduit. Heavier waste tends to flow into the waste transport conduit, while lighter fibers will be deflected by the air current in the fiber transport conduit. The adjustment of the deflector 37 helps to obtain a suitable division of the air stream.

11 est evidemment impossible d'obtenir une Sepa- ration absolue des fibres et d6chets 6tant donn6 qu'ils penUrent dans les conduits dans des conditions telles que certaines particules de d6chets libres demeure- ront avec la fibre tandis qu'une certaine Proportion de fibres d6faites Sera entramee avec les ddchets. Pour produire une Separation additionnelle des d & chets des fibres, 1e conduit transporteur de fibres presente un coude marqu6 et une ouverture d'6jection de dechets conduisant dans la boite ä d6chets ä travers la paroi du conduit ä la Partie exterieure du coude. En raison du changement de direction du courant d'air, les partieules de d6chets plus lourdes ont tendance ä suivre RTI ID="0002.0278" WI="6" HE="4" LX="826" LY="2217"> une ligne droite et sont 6ject6es ä travers 1'ouverture dans la boite ä dechets. Dans la machine repr6sent6e, les ouvertures sont constituees par les intervalles entre une s6rie de Barres incurv6es 50 dont les extr6mites libres se trouvent Jans Falignement du Bord tai116 en biseau dune Plaque r6glable 51 qui constitue une continua- tion de la paroi du conduit transporteur de fibres. It is, of course, impossible to achieve absolute separation of fibers and waste since they hang down the ducts under such conditions that some loose waste particles will remain with the fiber while a certain proportion of loose fibers Will be taken in with the waste. To provide additional separation of the waste from the fibers, the fiber transport duct has a marked elbow and a waste ejection opening leading into the waste box through the wall of the duct at the outside of the elbow. Due to the change in direction of the air stream, the heavier waste particles tend to follow RTI ID="0002.0278" WI="6" HE="4" LX="826" LY="2217"> a straight line and are ejected through the opening in the waste box. In the machine shown, the openings are constituted by the intervals between a series of curved bars 50 whose free ends are in alignment with the bevelled edge of an adjustable plate 51 which constitutes a continuation of the wall of the fiber transport duct. .

Dans le but de recuperer les fibres defaites qui ont passe dans la boite ä d6chets avec les ddchets, une ouverture de readmission de fibres 55 est pra- tiqu6e dans la paroi du conduit transporteur de fibres au-delä des ouvertures d'ejection de d6chets et en communication avec la boite ä d6chets. Etant donn6 que 1e conduit transporteur de fibres aboutit dans une zone dans laquelle regne une Pression inferieure ä Gelle qui regne dans la boite ä d6chets, de Fair Passera ä travers Fouverture de readmission de fibres 55 et ramenera les fibres 16geres d6faites, en Suspension dans la boite de dechets, dans 1e conduit transporteur de fibres. In order to recover the loose fibers which have passed into the waste box with the waste, a fiber re-entry opening 55 is made in the wall of the fiber transport conduit beyond the waste ejection openings and in communication with the waste box. Since the fiber transport conduit terminates in an area of lower pressure than that which prevails in the waste box, the air will pass through the fiber re-entry opening 55 and bring the loose, light fibers back into suspension in the waste container. waste box, in the fiber transport duct.

L'ouverture de r6admission 55 est de dimensions reglables gräce ä une vanne coulissante 56. L'ouver- ture doit eire r@g1_6e de fgon telle quelle permette de recuperer une quantite maximum de fibres sans permettre Fentrainement simultane de particules de d6chets indesirables avee 1e courant d'air qui la tra verse. The re-entry opening 55 is of adjustable dimensions by means of a sliding valve 56. The opening must be adjusted so as to allow the maximum quantity of fibers to be recovered without allowing the simultaneous entrainment of particles of undesirable waste with the current of air passing through it.

Un orifice reglable 60 dans la paroi de la boite ä d6chets permet 1e r6glage de la Pression d'air ä 1'int6rieur de la boite ä dechets. An adjustable orifice 60 in the wall of the waste box allows adjustment of the air pressure within the waste box.

Claims

CLAIM Machine for cleaning fibres, characterized in that it comprises a rotating cylinder for treating the fibers and a combing cylinder mounted close to the treatment cylinder, the parts facing the two cylinders moving in the same direction, a device for blowing air through the combing cylinder into an area adjacent to the treatment cylinder, and ducts for discharging waste and fibers from the treatment cylinder and the combing cylinder, the duct for the fiber terminating in an area in which the air pressure is less than that of the area in which the waste duct terminates. 1. Machine according to claim, for cleaning fibers containing impurities heavier than the fibers, characterized in that said combing cylinder is mounted parallel and adjacent to the treatment cylinder, the Parts in view of the treatment cylinder and the combing cylinder moving in the same direction, Gelle duRTI ID="0002.0545" WI="12" HE="4" LX="1857" LY="1965"> combing cylinder moving more quickly, however, a casing surrounding said combing cylinder and having an open part in the vicinity of the treatment cylinder, the combing cylinder having, on the other hand, members for the admission of air inside the combing cylinder and its subsequent expulsion in the radial direction through the open part of the casing, the said ducts for evacuating the waste and the fibers having, in the vicinity of the treatment and combing cylinders, a common inlet orifice partitioned off by a deflector, the duct for the waste being closer to the treatment cylinder than the duct for the fibers and its inlet end being oriented tangentially with respect to the treatment cylinder, while its other end opens into a waste box.

2. Machine according to claim and sub-claim 1, characterized in that the fiber evacuation duct has an elbow and a waste ejection opening through its wall at the outer part of the elbow, opening leading to the waste box so that any waste heavier than the fibers which remains mixed with the last is ejected through said opening into the waste box.

3. Machine according to claim and sub-claim 1, characterized in that the fiber evacuation conduit comprises a fiber re-admission opening in its wall, placing it in communication with the waste box so as to allow fibers having penetrated into the waste box and having subsequently been separated from the waste to be recovered in the fiber duct under the effect of an air current.

4. Machine according to claim and sub-claims 1 and 3, characterized in that said fiber readmission opening is of adjustable dimensions.

5. A machine according to claim and sub-claims 1 to 3, characterized in that said fiber re-entry opening is disposed beyond said fiber duct waste ejection opening.

6. Machine according to claim and sub-claim 1, characterized in that said rotary combing cylinder has brushes oriented in the radial direction at its periphery, said brushes however not coming into contact with the adjacent surface of the treatment cylinder. .