EP0176668B1 - Disposition d'un puits d'alimentation pour matière fibreuse - Google Patents

Disposition d'un puits d'alimentation pour matière fibreuse Download PDF

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Publication number
EP0176668B1
EP0176668B1 EP85108015A EP85108015A EP0176668B1 EP 0176668 B1 EP0176668 B1 EP 0176668B1 EP 85108015 A EP85108015 A EP 85108015A EP 85108015 A EP85108015 A EP 85108015A EP 0176668 B1 EP0176668 B1 EP 0176668B1
Authority
EP
European Patent Office
Prior art keywords
flap
opening
plate
air
arrangement according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85108015A
Other languages
German (de)
English (en)
Other versions
EP0176668A1 (fr
Inventor
Rolf Binder
Paul Stäeheli
Urs Stäehli
Fritz Knabenhans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
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 AT85108015T priority Critical patent/ATE41791T1/de
Priority to IN537/MAS/85A priority patent/IN165405B/en
Publication of EP0176668A1 publication Critical patent/EP0176668A1/fr
Application granted granted Critical
Publication of EP0176668B1 publication Critical patent/EP0176668B1/fr
Expired legal-status Critical Current

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Classifications

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

Definitions

  • the present invention relates to a filling shaft arrangement according to the preamble of patent claim 1.
  • German patent application No. 1 510 323 it is already known to provide swiveling flaps arranged in the manner of a louver, which cover a perforated wall which is located between an air shaft and a return shaft. This is done for the purpose of successively filling the backflow shaft.
  • German Offenlegungsschrift No. 3 239 524 A1 shows a flap on a device for feeding fibers to a carding machine. This serves to prevent the vacuum in the air outlet space, which adjoins the perforated wall of a collecting box for the fiber material, from varying.
  • the present invention relates to the features defined in the characterizing part of patent claim 1.
  • the flap according to the present application serves a significantly different purpose than is the case with the known flaps. It provides the possibility of being able to regulate the transport medium for the fiber material in the filling shaft or to prevent further feeding of the same. This is necessary when parking individual cards. There is thus the possibility of regulating the filling of the shaft as the filling level of the shaft increases by means of the pneumatic pressure acting on the material column. This gives a uniformly dense flake material at all heights of the filling shafts. Clogging and overfilling of the transport channel is prevented. In other words, by changing the flap resistance, the density of the flake material can be influenced as desired and thus be uniform.
  • Fig. 1 shows a filling shaft 11, which is loaded with fiber material supplied by the transport channel 12.
  • the fiber material is transported in the channel 12 by means of a transport medium, which is generally air.
  • the shaft 11 is assembled with an exhaust air chamber 13 and through an air-permeable, for. B. perforated wall 14, separated from this.
  • the fiber material 15 accumulated at the lower part of the shaft 11 is fed through a pair of feed rollers 16 to a carding machine (not shown) or a opening roller.
  • a locking flap 20 which can be pivoted about an axis 19 and is designed as a plate.
  • a rod 21 is arranged transversely to the flap 20 and fastened to it. He carries a weight 22, the distance from the flap 20 is adjustable.
  • the parts 20 to 22 are located inside a connecting line 23 which leads to the exhaust air line 24.
  • actuating device 26 e.g. B. a piston-cylinder device can be actuated.
  • fiber material is continuously conveyed in the transport channel 12 by means of a transport medium.
  • the medium flows in the direction perpendicular to the plane of the drawing. Fibers separated from the transport channel 12 fall into the filling chute 11.
  • the fiber material collected in the filling shaft 11 is fed through the feed roller pair 16 to a carding machine or a opening roller.
  • the air flow indicated by the arrows 27 is only present when the flap 20 is in a z. B. the broken line, open position is located, that is pivoted by the angle a from its closed position. If this is the case, the medium flowing into the shafts 11 and 13 flows through the opening 18 into the connecting line 23, from which it is led away via the exhaust air line 24.
  • the flap 20 is pushed into its closed position by means of the actuating device 26. Between the rollers of the pair 16 and the walls of the shaft 11 practically no air can escape and with increasing amount of Fiber material 15 in the shaft 11 decreases its air permeability. When the flap 20 is in its closed position and there is sufficient fiber material 15 in the shaft 11, practically no air flows into the shaft 11, ie the fiber material that continues to move in the transport channel 12 is blown over the shaft 11 and no longer reaches into this.
  • the arrangement shown thus allows the supply of further flock material to be prevented in a simple manner when a card is parked.
  • the material already in the shaft is not additionally compressed under these circumstances. Overfilling and clogging of the transport channel 12 is avoided.
  • the rod 21 and the weight 22 attached to it generate, by their gravity, a torque acting in the sense of closing the opening 18 on the flap 20.
  • this causes the existing between the channel 12 and the line 24 Difference in the air pressure Ap an opening of the flap 20, with a certain inclination of the flap balancing, in which the pressure exerted by the flowing air and the torque exerted by the parts 20, 21 and 22 balance each other.
  • the torque exerted by the parts 20, 21 and 22 forms a compensating section modulus A pK for the air flow flowing through the shaft 11 and the chamber 13. This can be changed by the weight 22 and thus selected as desired. In this way, the density of the fiber material accumulating in the shaft 11 can be influenced as desired by varying the weight 22.
  • the flap 20 additionally throttles the air flow. This additionally reduces the air flowing in a heavily filled shaft 11 and prevents the fiber material 15 from becoming too compact.
  • FIG. 2 shows a further embodiment with a locking flap.
  • 17 again designates the wall of an exhaust air chamber 13 as shown in FIG. 1, this wall not being the air-permeable one.
  • the opening 18 present in this wall 17 also serves for the exhaust air to flow through to an exhaust air duct.
  • a locking flap 30 is arranged pivotably about an axis 29.
  • a weight 32 which can be adjusted in the longitudinal direction thereof, is carried by a rod 31 which is fastened to the flap 30 perpendicularly to the latter.
  • An open position of the flap 30 is again drawn in dashed lines. When the flap 30 is open, the air flows from a transport channel, not shown, from left to right according to FIG. 2, through the opening 18 to an exhaust air line, not shown.
  • the angle by which the flap 30 is pivoted into its open position is denoted by a.
  • FIGS. 3 and 5 relate to the operation of the flap 20 shown in FIG. 1 and FIGS. 4 and 6 relate to the operation of the flap 30 of FIG. 2.
  • the flap pivoting a is shown as the abscissa and the ordinate is the section modulus A pK formed by the flap 20 and 30, respectively. It can be seen that the latter remains approximately constant in the arrangement of the parts 20, 21, 22 shown in FIG. 1, but decreases in the arrangement of the parts 30, 31, 32 with increasing angle a.
  • the air quantity L flowing through the opening 18 is plotted as the abscissa and the pressure difference A p between the transport duct 12 and the exhaust air line 24 is plotted as the ordinate.
  • the variation in the air quantity L corresponds to the change in the angle a, so that the angle a can also be assumed as the abscissa.
  • 5 and 6 show that in the embodiment of FIG. 1 the additional pressure generated by the flap 20 increases with increasing opening angle a, while it remains constant in the embodiment according to FIG. 2.
  • the torque of the flap 20 thus supports a reduction in the air flowing through the filling shaft 11 with an increasing opening angle a, while the flap 30 causes the air flowing through the filling shaft to remain constant with a changing opening angle a.
  • the resistance formed by the flap regardless of the opening angle a, d. H. to keep it constant or to execute it as an increasing amount of air.
  • By appropriate redesign or changed arrangement of parts 20, 21, 22; 30, 31, 32 it is also possible to reduce the resistance of the flap with increasing air volume.
  • the decreasing pressure loss exerted by the flap 30 thanks to a balanced torque allows in particular to exert a constant pressure on the fiber material in the shaft 11 and thus to obtain a balanced weight and density distribution in the filling shaft.
  • FIG. 7 Another example of a filling chute arrangement is shown in FIG. 7. Like the example in FIG. 1, this also has a filling shaft 11, a transport channel 12, an exhaust air chamber 13, a perforated wall 14, an opening 18, a connecting line 23 and an exhaust air line 24.
  • a locking flap 40 is in turn, pivotable about an axis 39, attached to a wall 17 of the exhaust air chamber 13, which is not the perforated wall 14.
  • a rod 41 with a weight 42 can be provided for balancing the flap 40, but can also be omitted.
  • the roller 33 is fixed by a pair of feed rollers and the roller 34 is slidable in a guide 35 stored.
  • the latter is also subject to e.g. B. by means of a spring (not shown), a bias directed against the fiber material passing between the rollers 33, 34.
  • the position of the roller 34 is indicated to a signal transmitter 36 which emits a signal which characterizes the deviation from a desired value. This signal depends on the density and thus on the thickness of the fiber material located between the rollers 33 and 34. It comes to a controller 37, which, for. B. actuates a drive 38 through which the locking plate 40 can be pivoted about its axis 39. If a balance for the weight of the flap 40 or for the pressure generated on the latter by the air flow is desired, a rod 41 with a weight 42 can be provided, as already mentioned.
  • rollers 33, 34 convey the fiber material 15 downwards while compressing the same. If the material being conveyed varies in quantity, it is not uniformly thick.
  • the roller 34 when there is a large thickness, the roller 34 is shifted to the right, when there is a small thickness to the left. These shifts are transmitted to the signal generator 36 and, for example, converted into electrical signals. These in turn control the controller 37 in such a way that it generates an output signal which actuates the drive 38 in one direction or the other, which in turn causes the flap 40 to pivot in the closing or opening sense. If the material 15 is too tight, the flap 40 is moved against its closed position, if it is not tight enough, the flap 40 is opened further. If the flap 40 is closed more tightly, less air flows through the opening 18 and thus also through the shaft 11. As a result, the fiber material 15 is compressed less. In addition, due to the reduced flow of the transport medium, more fiber flakes fly over the shaft in channel 12, so that it fills up less. If the fiber material is not thick enough, they will find it
  • the size of the air resistance exerted by the flap 40 can be chosen as a function of the thickness of the fiber material 15 by a suitable choice, in particular the characteristic of the regulator 37.
  • the flaps 20 or 30 must always be outside the chamber 13, since their pivoting is influenced by the transport medium flowing through the opening 18.
  • a rigid connection is present between the drive 38 and the flap 40, so that the flap 40 can be located both in the interior and, as shown, outside the exhaust air chamber 13.

Landscapes

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

Claims (6)

1. Disposition d'un silo d'alimentation près d'une carde, alimentée en matière fibreuse, avec un silo d'alimentation (11) servant à la réception des fibres livrées par un canal de transport et ayant une paire de rouleaux alimentaires située dans sa partie inférieure, ainsi qu'avec une chambre d'écoulement d'air (13) séparée de ce silo d'alimentation (11) par une paroi perméable à l'air (14), et avec un clapet d'évacuation d'air pivotant (20, 30, 40) situé entre la chambre d'écoulement d'air (13) et une conduite d'évacuation d'air (23, 24),
caractérisée par le fait
que la chambre d'écoulement d'air (13) comprend une chambre unique, et que le clapet d'évacuation d'air (20, 30, 40) est disposé au-dessus d'une ouverture (18) pratiquée dans une des parois (17) qui n'est pas perméable à l'air, et que le clapet d'évacuation d'air (20, 30, 40) est disposé au-dessus de l'ouverture de telle sorte que l'ouverture (18) est variable, pour le remplissage du silo d'alimentation (11), en fonction des résistances à l'air variables au choix de l'ouverture (18).
2. Disposition selon revendication 1,
caractérisée par le fait que le clapet (20, 30, 40) est en outre prévu pour interrompre l'alimentation en flocons de fibres du silo d'alimentation (11), de telle sorte que l'ouverture (18) peut être fermée par le clapet (20, 30, 40) au moyen d'un appareil d'actionnement (26, 38).
3. Disposition selon revendication 1,
caractérisée par le fait que le clapet (40) est réglable pour le choix des résistances à l'air, à l'aide d'un arrangement de commande (36, 37, 38), commandé par la quantité de matière fibreuse qui existe entre la paire de rouleaux alimentaires (33, 35).
4. Disposition selon revendication 2,
caractérisée par le fait que le clapet (20, 30) est pivotable autour d'un axe (19, 29) et qu'un poids (22, 32), fixé sur lui, forme un moment de torsion agissant sur le clapet (20, 30) dans le sens de fermer l'ouverture (18) par celui-ci.
5. Disposition selon revendication 5,
caractérisée par le fait que le clapet (20, 30) est formé comme une plaque pouvant pivoter autour d'un axe horizontal (19, 29), qu'une fermeture de l'ouverture (18) se produit dans la position verticale de la plaque, que le poids (22, 32) est porté par une tige (21, 31) disposée verticalement sur la plaque et fixée sur cette plaque, poids qui est réglable dans des positions au choix, par rapport à la plaque (20, 30).
6. Disposition selon revendication 6,
caractérisée par le fait que la plaque (30) s'étend vers le haut depuis l'axe de pivotement (29), et que la tige (31) est fixée sur le clapet (30) dans les environs immédiats de l'axe de pivotement (29), qu'elle est disposée perpendiculairement au clapet et dirigée vers l'intérieur de la chambre (13).
EP85108015A 1984-09-18 1985-06-28 Disposition d'un puits d'alimentation pour matière fibreuse Expired EP0176668B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT85108015T ATE41791T1 (de) 1984-09-18 1985-06-28 Fuellschachtanordnung fuer fasermaterial.
IN537/MAS/85A IN165405B (fr) 1984-09-18 1985-07-12

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4465/84 1984-09-18
CH446584 1984-09-18

Publications (2)

Publication Number Publication Date
EP0176668A1 EP0176668A1 (fr) 1986-04-09
EP0176668B1 true EP0176668B1 (fr) 1989-03-29

Family

ID=4276604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108015A Expired EP0176668B1 (fr) 1984-09-18 1985-06-28 Disposition d'un puits d'alimentation pour matière fibreuse

Country Status (4)

Country Link
US (1) US4878784A (fr)
EP (1) EP0176668B1 (fr)
JP (1) JPS6175824A (fr)
DE (1) DE3569129D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904853A1 (de) * 1989-02-17 1990-08-30 Hollingsworth Gmbh Vorrichtung zum pneumatischen speisen eines speiseschachtes u. dgl.

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US5038975A (en) * 1984-08-13 1991-08-13 Highland Manufacturing & Sales Company Apparatus for producing weighed charges of loosely aggregated filamentary material from compacted bales of the material
DE3734140C2 (de) * 1987-10-09 1999-01-28 Truetzschler Gmbh & Co Kg Vorrichtung zur Vergleichmäßigung des einer Karde, Krempel, Reiniger o. dgl. zuzuführenden Faserflockenvlieses
DE3734485C1 (de) * 1987-10-12 1989-04-13 Hollingsworth Gmbh Vorrichtung zum Reinigen von Textilfasergut
EP0341450B1 (fr) * 1988-05-11 1992-08-12 Maschinenfabrik Rieter Ag Dispositif pour décharger une natte de fibres d'une conduit d'alimentation
US5337455A (en) * 1989-02-17 1994-08-16 Hergeth Hollingsworth Gmbh Device and method for pneumatically feeding a feeding chute
FR2645537B1 (fr) * 1989-04-05 1994-03-04 Fabre Medicament Pierre Nouveaux sulfonamides derives d'acides benzocycliques ou benzoheterocycliques, leur preparation et leur application en therapeutique
DE4038838B4 (de) * 1990-01-23 2005-12-22 Trützschler GmbH & Co KG Vorrichtung zum Speisen von in Flockenform befindlichem Fasergut, z. B. Baumwolle, Chemiefasern u. dgl., zu Verarbeitungsmaschinen
JPH04123847U (ja) * 1991-04-25 1992-11-10 つばさ観光バス株式会社 バス用客席マイクロホンジヤツクの受け口
EP0563700B1 (fr) * 1992-04-01 1996-05-15 Maschinenfabrik Rieter Ag Appareil pour régler le débit d'air dans un canal d'air
GB2266587B (en) * 1992-05-01 1996-01-10 Aaf Ltd Improvements in and relating to dust containment systems
EP0731194A3 (fr) * 1995-03-08 1997-07-16 Rieter Ag Maschf Puits d'alimentation
EP0877106B1 (fr) * 1997-05-07 2002-06-26 Maschinenfabrik Rieter Ag Procédé pour emplir une cheminée d'alimentation de flocons et cheminée d'alimentation
DE19906148A1 (de) 1999-02-13 2000-08-17 Truetzschler Gmbh & Co Kg Vorrichtung zum Füllen eines Flockenspeichers, insbesondere einer Karde, Krempel, Reinigers o. dgl. mit Faserflocken
DE10214389A1 (de) * 2002-03-30 2003-10-16 Truetzschler Gmbh & Co Kg Vorrichtung in der Spinnereivorbereitung zum Abscheiden der Transportluft beim Beschicken von Fasermaterial, z.B. Baumwolle o. dgl., zu einer Verarbeitungsmaschine
CN101120125A (zh) * 2005-02-21 2008-02-06 里特机械公司 棉絮供料方法和储棉系统
CN110541212B (zh) * 2019-09-20 2024-02-27 瑞法诺(苏州)机械科技有限公司 一种气压匀整棉箱系统

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904853A1 (de) * 1989-02-17 1990-08-30 Hollingsworth Gmbh Vorrichtung zum pneumatischen speisen eines speiseschachtes u. dgl.

Also Published As

Publication number Publication date
JPS6175824A (ja) 1986-04-18
EP0176668A1 (fr) 1986-04-09
JPH0260768B2 (fr) 1990-12-18
DE3569129D1 (en) 1989-05-03
US4878784A (en) 1989-11-07

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