WO2006053454A1 - Dispositif d'alimentation - Google Patents

Dispositif d'alimentation Download PDF

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Publication number
WO2006053454A1
WO2006053454A1 PCT/CH2005/000637 CH2005000637W WO2006053454A1 WO 2006053454 A1 WO2006053454 A1 WO 2006053454A1 CH 2005000637 W CH2005000637 W CH 2005000637W WO 2006053454 A1 WO2006053454 A1 WO 2006053454A1
Authority
WO
WIPO (PCT)
Prior art keywords
feed device
channel
funnel
working width
elements
Prior art date
Application number
PCT/CH2005/000637
Other languages
German (de)
English (en)
Inventor
Gerald Steiner
Roger DÄLLENBACH
Original Assignee
Maschinenfabrik Rieter Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Priority to EP05797067A priority Critical patent/EP1812632A1/fr
Publication of WO2006053454A1 publication Critical patent/WO2006053454A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots

Definitions

  • the invention relates to a device and a method for uniform flocs distribution in a cleaning machine, in particular a mixer or a buffer.
  • Cotton is pre-cleaned in ginnings after picking, coarse impurities and the seeds are removed. Then the cotton is pressed into bales. This is the starting material for the spinning mill. In the spinning preparation - blowroom and carding - the cotton is cleaned in several steps, mixed, dissolved up to individual fibers, parallelized the fibers and finally put together to form a sliver.
  • An example of a plant would be bale opener, coarse cleaner, mixer, fine cleaner, card. Between the various devices, the cotton is almost always transported by pneumatic conveying means.
  • An average cleaning facility usually has one machine per cleaning line, which ultimately feeds 8 to 16 cards (500-700 kg / h total production). With the new generation of high-performance machines, which can process 180 kg per hour and more, there is a need for cleaning machines that can cope with this increase in production. Among other things, by increasing the throughput (of the individual machines) and optimizing the storage capacity, the blowroom can meet the requirements.
  • a known mixing device (described inter alia in EP 1 13 598) has a plurality of parallel chambers or shafts in which the flakes are deposited. From the shafts, the flakes are transported by means of a horizontal treadmill. Finally, a rising needle flap cloth helps to transport the flocs out of the device back into the pneumatic system. (For details of this machine, see Figures 1, 2 and the associated description).
  • Today's machines have a working width of 1.20m. For an increase in the throughput of the same residence time with a constant mixing behavior and constant dissolution of the flakes, a working width of greater than 1.5 ⁇ m would be desirable, the depth of the individual chambers basically not having to be changed.
  • such a mixing device is pinned to a pneumatic system (eg tube 0-300 mm) which widens into a shallow funnel-shaped channel which blows the fiber flakes all the way up into a space above the chambers.
  • a pneumatic system eg tube 0-300 mm
  • the supplied transport air can escape through filter surfaces that form the sides of the chambers.
  • the feed for machines of a low working width of less than 1.2 m forms no problem.
  • a working width of 1.2m and larger a "fiber flake peak" is formed in the middle, as the material can not be evenly distributed across the width over the short time.
  • Spinning mills are built in practice under local conditions. Not every building has the same floor plan.
  • the piping of the various devices for the pneumatic system is therefore adapted to these local conditions. It is therefore out of the question to prescribe strict straight piping and to adapt the funnel construction individually in each spinning mill would be costly and time consuming.
  • the invention is therefore based on the object to provide a device and a method of the type described above, which avoids the disadvantages mentioned, in particular always ensures a uniform supply of wide preparation machines, regardless of the arrangement of the pneumatic Transport ⁇ system in the power.
  • the solution of this object is achieved by the characterizing features of claim 1. An ⁇ .
  • Today's feeding device is designed as a funnel-shaped channel, which widened to the working width of the preparation machine so that it can open into an upper space of the preparation machines and at the beginning of the
  • connection opening is arranged for connection to a pneumatic transport system without additional deflection elements in the channel itself.
  • the feed device has two deflecting elements mounted on one side and arranged vertically in the longitudinal direction of the channel directly following the connection opening in the funnel-shaped channel, wherein the connection opening is arranged between the pivot points of the two deflection elements.
  • deflecting elements may, for example, be designed in the form of flaps or wings, the height of the flap corresponding to that of the funnel-shaped channel.
  • the upper and lower edges of the flap are sealed z. B. with felt strips, so that no flakes can be trapped between the flaps and the funnel wall.
  • the flaps can be made of a light metal, z. As aluminum, be made, wherein the surface is treated such that no Fa ⁇ fibers can adhere. If necessary, reinforcing tapes can still be mounted on the side facing away from the flute stream.
  • the center of the working width is equal to the middle of the channel, from where the flaps are arranged symmetrically.
  • the connection opening with the pneumatic channel is arranged symmetrically with respect to these centerlines.
  • the flaps are designed identically and preferably move in parallel. For example, if flap 1 rests in the outer state parallel to the channel wall, then flap 2 is parallel to flap 1 directed to the center of the channel.
  • the length of the flap is selected so that the tip of the flap extends to the middle of the channel. If she go beyond that or made shorter, then in the middle of the working width of the spinning preparation machine an irregular feeding would take place.
  • the deflection elements are adjustable, better still regulable and controllable.
  • the deflecting elements are allocated for the movement z.
  • each deflection element may have its own associated means, it is preferable if the flaps are coupled to each other in such a way that they can be moved by the same means. This also improves the synchronous movement of the elements. The flaps can then be adjusted so that they receive different residence times in their outermost position, whereby a feed distribution over the working width of the machine is adjustable.
  • Fig. 1 Schematic view of a mixing device.
  • FIG. 2. Schematic drawing of the operation of the mixing device.
  • Fig. 3. Side view and top view of the mixing device with the Flockenvertei ⁇ learning according to the invention.
  • Fig. 4. Schematic example of the operation of the flake distributor
  • the construction and mode of operation of the mixers according to the prior art will be explained with reference to FIGS. 1 and 2.
  • the fiber flakes pass pneumatically through the Inlet (1) in eight successive Gremchte (9).
  • the supply of these shafts can be regulated by Ausscheidenasen (14), which are adjustable in position.
  • the distribution of the material across the machine width is produced by a funnel-shaped, flat channel. Perforated sheets are located on the side plates of the filling hoppers, through which the transport air can escape and is fed to an exhaust air line (10).
  • differential pressure switch (15) the maximum control is monitored. The more material is in the chambers, the smaller the screen surface, through which the transport air can escape. Consequently, the pressure increases until it reaches the maximum pressure and the feed is stopped.
  • the minimum filling is monitored by a light barrier in the first shaft.
  • the material flow is deflected from the vertical to the horizontal.
  • This folding by 90 ° causes not only a compression but also a temporal offset of the fiber packets (shown in Figure 2 with the different filling surfaces) of the first (9a) to the last chamber (9h).
  • the fiber packets are guided by conveyor belt (8) to Abtragorgan (6).
  • the Abtragorgan for example, a needle cloth, now carries simultaneously from all eight layers of material, so that a homogeneous mixture is formed.
  • a next thorough mixing is done by the opening roller (3), which is responsible for a resolution of the fiber flakes.
  • Part of the floc is transported via the opening roller back into the dynamic storage (2) and is mixed again by the turbulences.
  • the flakes that land in the dynamic store are picked up again by the cloth and transported on.
  • the flocs are conveyed further by means of a take-off roll (4) into the outlet (5), where they are sucked off.
  • FIG 3 shows the side view and top view of the feed device (11) according to the invention and the subsequent spinning preparation machine using the example of a mixer with several shafts or chambers (9a to 9h), as shown in Figure 1 and 2.
  • the feed device consists of a funnel-shaped channel, which is substantially widened to a maximum of the working width b of the subsequent machine.
  • the broadening need not be the same as b, but in any case it is selects that the following machine can be fed over the entire working width was ⁇ .
  • the height h of the channel does not substantially change and depends on the diameter of the pneumatic conveying channel and the upper portion of the subsequent machine, indicated at 19 in the drawing.
  • the flaps 11 and 12 are directly at the entrance 17 of the funnel 21 - which forms the An ⁇ opening with the pneumatic transport system 1 - arranged.
  • the flaps or deflecting elements 12 and 13 are each rotatably mounted about an axis of rotation 18, 19. These rotatable axles 18, 19 are equipped with means for the rotational movement (not shown).
  • flap 13 has arrived in the outermost position with the flaps abutting against the side wall of hopper channel 21, flap 12 is arranged in parallel so that the free edge, which is parallel to the pivoting edge, extends exactly to the center line m.
  • Zone II is ange ⁇ fed.
  • zone I is fed. Because the length of the flaps does not exceed the center lines m, there is no overlapping zone that is fed.
  • the deflector elements are adjustable so that the deviation that arises can be specifically corrected by the shape of the pneumatic channel directly in front of the connection opening. For example (FIG. 4), when the pneumatic duct is connected to the connection opening 17 with a curve 1, the flakes will pass into zone II without any deflection. By a targeted deflection longer in zone I, then in zone II this unequal supply can be corrected.
  • the deflecting elements are alternately in the state with 12 ', 13' or 12, 13 indicated, wherein the state indicated with 12 ', 13' is kept longer, so that the overfeed is corrected in zone Il.
  • the duration of the supply in the one zone opposite the other zone depends on the amount of deviation that arises, eg. B. is a larger balance necessary for a stronger curve.
  • the residence time in zones I and II can be regulated so that the flaps automatically switch over.
  • the alternating residence times in zones I and II should be selected such that a uniform feed of the entire working width is ensured at all times.

Landscapes

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

Abstract

L'invention concerne un dispositif et un procédé pour répartir des flocs de manière homogène dans une machine de nettoyage, en particulier dans un mélangeur ou un réservoir intermédiaire.
PCT/CH2005/000637 2004-11-19 2005-11-01 Dispositif d'alimentation WO2006053454A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05797067A EP1812632A1 (fr) 2004-11-19 2005-11-01 Dispositif d'alimentation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1915/04 2004-11-19
CH19152004 2004-11-19

Publications (1)

Publication Number Publication Date
WO2006053454A1 true WO2006053454A1 (fr) 2006-05-26

Family

ID=35502683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2005/000637 WO2006053454A1 (fr) 2004-11-19 2005-11-01 Dispositif d'alimentation

Country Status (3)

Country Link
EP (1) EP1812632A1 (fr)
CN (1) CN101068961A (fr)
WO (1) WO2006053454A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865439A (en) * 1972-01-04 1975-02-11 Rieter Ag Maschf Apparatus for depositing fiber flock in a chute
DE3928752A1 (de) * 1989-08-30 1991-03-07 Rieter Ag Maschf Speisevorrichtung
EP0709500A1 (fr) * 1994-10-26 1996-05-01 Maschinenfabrik Rieter Ag Appareil pour séparer des flocons de fibres d'un courant d'air transporteur
EP0877104A1 (fr) * 1997-05-07 1998-11-11 Jossi Holding AG Appareil pour le traitement d'un courant de matière fibreuse dans une installation pour la préparation de fibres
WO1999018270A1 (fr) * 1997-10-03 1999-04-15 E.I. Du Pont De Nemours And Company Repartition amelioree de fibres a partir d'un systeme transporteur de fibres pneumatique
DE10252203A1 (de) * 2002-11-09 2004-05-27 Hergeth, Hubert A., Dipl.-Ing. Dipl.-Wirtsch.-Ing. Verfahren zur Breitenverteilung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865439A (en) * 1972-01-04 1975-02-11 Rieter Ag Maschf Apparatus for depositing fiber flock in a chute
DE3928752A1 (de) * 1989-08-30 1991-03-07 Rieter Ag Maschf Speisevorrichtung
EP0709500A1 (fr) * 1994-10-26 1996-05-01 Maschinenfabrik Rieter Ag Appareil pour séparer des flocons de fibres d'un courant d'air transporteur
EP0877104A1 (fr) * 1997-05-07 1998-11-11 Jossi Holding AG Appareil pour le traitement d'un courant de matière fibreuse dans une installation pour la préparation de fibres
WO1999018270A1 (fr) * 1997-10-03 1999-04-15 E.I. Du Pont De Nemours And Company Repartition amelioree de fibres a partir d'un systeme transporteur de fibres pneumatique
DE10252203A1 (de) * 2002-11-09 2004-05-27 Hergeth, Hubert A., Dipl.-Ing. Dipl.-Wirtsch.-Ing. Verfahren zur Breitenverteilung

Also Published As

Publication number Publication date
EP1812632A1 (fr) 2007-08-01
CN101068961A (zh) 2007-11-07

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