EP0494903B1 - Vorrichtung zum öffnen von gepressten faserballen - Google Patents

Vorrichtung zum öffnen von gepressten faserballen Download PDF

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Publication number
EP0494903B1
EP0494903B1 EP90914516A EP90914516A EP0494903B1 EP 0494903 B1 EP0494903 B1 EP 0494903B1 EP 90914516 A EP90914516 A EP 90914516A EP 90914516 A EP90914516 A EP 90914516A EP 0494903 B1 EP0494903 B1 EP 0494903B1
Authority
EP
European Patent Office
Prior art keywords
air
milling
milling roller
roller
guide sheet
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 - Lifetime
Application number
EP90914516A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0494903A1 (de
Inventor
Akiva Pinto
Günter Lucassen
Reinhard Schmidt
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.)
Hergeth Hollingsworth GmbH
Original Assignee
Hergeth Hollingsworth GmbH
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 Hergeth Hollingsworth GmbH filed Critical Hergeth Hollingsworth GmbH
Publication of EP0494903A1 publication Critical patent/EP0494903A1/de
Application granted granted Critical
Publication of EP0494903B1 publication Critical patent/EP0494903B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D01G7/00—Breaking or opening fibre bales
    • D01G7/04—Breaking or opening fibre bales by means of toothed members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/605—Hay unbaler

Definitions

  • the invention relates to a device for opening pressed fiber bales according to the preamble of the main claim.
  • Such a device for opening pressed fiber bales is known for example from DE-OS 33 34 222.
  • FR-A-2572244 describes the closest prior art to a device for opening pressed fiber bales, in which the suction hood has pivotable side walls in the lower section, with which the distance of the side walls to the milling drums of the Opening device is adjustable to adjust the flow rate of the intake air.
  • the air flow is chosen so that the sucked-in air flow is directed almost vertically onto the surface of the bale, thereby producing the ripple described above in the surface of the bale.
  • DE-A-3903238 describes an opening device in which an air baffle which is triangular in cross section is arranged between the two milling drums and is intended to deflect the air flow between the two milling drums into the suction hood.
  • the invention is based on the object of developing a device for opening pressed fiber bales in such a way that the uniformity of the processing of fiber pressed bales is increased and the air volume requirement is reduced.
  • a pressure roller parallel to the milling roller with a suction hood above the milling roller
  • the first air baffle is arranged, in which the removed flakes are sucked off by means of an air stream that occurs between the first air baffle and the pressure roller, according to the invention provided that between the pressure roller and the milling roller over the entire length of the milling roller, a parallel to the milling and pressure rollers from the First and a second air baffle formed air guide is arranged, which deflects the air flowing between the pressure roller and the first air baffle in a direction running substantially parallel to the bale surface.
  • the arranged between the pressure roller and milling roller air guide channel advantageously causes a deflection of the intake air stream entering at high air speed in a direction substantially parallel to the bale surface, whereby the removal process in the milling area and the removal of the removed fiber flakes is facilitated.
  • the sucked-in air flow no longer impacts directly on the bale surface in the area between the pressure roller and milling roller and, depending on the local density of the fiber compression, cannot release fibers there and thus contribute to crater formations in the bale surface, which in both the longitudinal and transverse directions of the bale surface lead to an undesirable undulation leads.
  • a second air baffle directs the air flowing between the pressure roller and the first air baffle in a direction running essentially parallel to the bale surface.
  • the intake air flow is thus deflected without acting on the bale surface in such a way that the air flow enters the milling area tangentially parallel to the bale surface and thereby supports the removal of the fiber flakes.
  • the ducting of the intake air flow also makes it possible to reduce the required air volume via the flow velocities defined in the air duct. Furthermore, the intake power can be reduced, since flow losses due to turbulence in the intake air flow are considerably reduced. Because the surface ripple caused by the intake air flow is reduced, a defined constant removal rate can be achieved for the milling process.
  • the first air deflector nsaug Kunststoffstrom the above the pressure rollers entering A performs formed between the pressure roller and the first air guide plate constriction.
  • This constriction which is nozzle-shaped in cross-section and extends over the entire length of the milling device, enables the air flow to be homogenized over the length of the milling device.
  • a third air baffle guides the air circulating with the milling drum in the peripheral area of the milling drum up to the vicinity of the bale surface. In this way, the air circulating with the milling drum is continuously deflected until shortly before the bale surface, as a result of which it only mixes with the intake air flow immediately before the milling area.
  • the second air baffle can be extended into the peripheral region of the milling drum, whereby the air flow tangential from the third air baffle to the milling drum is also deflected in a direction running essentially parallel to the bale surface.
  • the bale opener has a tower 10 which can be moved back and forth on a carriage 11 along the template from a plurality of fiber bale rows 7, 8, 9.
  • a rail guide 12 is provided on which the wheels of the carriage 11 (not shown) are guided.
  • the tower 10 has a boom 13 on one side, in which there is a milling device 5 for removing the fiber bales.
  • the milling device 5 can consist of two milling drums 3, 4 which are driven to rotate about their longitudinal axis.
  • the boom 13 with the milling device 5 can be moved up and down in the height direction according to the arrow 15 by means of an adjustable feed.
  • Below the tower 10 with the carriage 11 is a channel 16 for receiving and removing the flakes processed by the rows of bales.
  • the milling device 5 consists of two milling drums 3 and 4 which run upwards in the opposite direction to the center between the pairs of drums and remove 20 fibers or flakes from the surface of the bale and fling them upwards between them.
  • a pneumatic suction flow By means of a pneumatic suction flow, the loosened fibers pass through the suction hood 21 into the interior of the tower 10, in which a telescopic guide leads to the lower longitudinal collecting duct 16.
  • the boom 13 with the milling device 5 also decreases accordingly.
  • a grate 17 which is formed from rods between which the toothed disks of the milling drums 3, 4 engage in the bale surface 20.
  • Parallel to the milling drums 3 and 4, pressure rollers 18 running parallel to the milling drums 3, 4 are provided following the ends of the grate bars 17.
  • An air guide channel 2 is arranged between the respective pressure rollers 18 and the milling rollers 3 and 4, which is formed from a plurality of air guide plates 22, 26 in connection with the pressure roller 18.
  • This air duct 2 extends over the entire width of the milling device 5.
  • An air duct 2 is provided on each side of the milling device 5, so that the air sucked in via the pressure rollers 18 is sucked in symmetrically to the center of the milling device 5 and there through the suction hood 21 is dissipated.
  • the first air baffle 22 is sealed off from the housing 30 of the milling device 5 by means of a seal 32, so that the entire air flow drawn in must occur between the first air baffle 22 and the respective pressure roller 18. No or no appreciable air can pass between the pressure roller 18 and the bale surface.
  • the first air baffle 22 has a bend facing the pressure roller 18 which forms a constriction 28 in the air inlet gap with a gap width between 10 and 30 mm, preferably between 15 and 20 mm.
  • the first air baffle 22 thus forms, together with the pressure roller 18, an air inlet slot which is nozzle-shaped in cross section and has an area which widens in front of and behind the constriction 28 in a funnel shape. For this first section of the air duct 2, the air flow can then occur at an angle of approximately 45 ° to 70 ° to the bale surface.
  • a third air baffle 24 is arranged in the peripheral region of the milling drum 3 or 4.
  • This third air baffle plate 24 adjoins the housing wall 30 surrounding the milling drum 3 or 4 and allows tangential air guidance of the air flow circulating with the milling drum 3 or 4 up to the vicinity of the bale surface 20, that is to say the one running through the air duct 2 Intake air flow.
  • the air baffle 24, which also extends over the entire length of the milling device 5, can consist of a sheet with a straight cross section or also of a curved sheet parallel to the line of engagement of the milling drum toothed disks.
  • the first air baffle 22 preferably forms a closed cross section together with the third air baffle 24.
  • a second air baffle 26 is arranged below the incoming air flow and serves to deflect the air flow in a direction essentially parallel to the bale surface 20, namely towards the milling drums 3 and 4.
  • the second air baffle plate 26 can be kinked or curved to allow deflection with the least possible pressure loss and avoiding air turbulence, taking into account the angle of incidence of the incoming flow.
  • the section of the second air baffle 26 running downstream of the air duct 2 is preferably oriented parallel to the bale surface 20 and rests on this bale surface.
  • the second air baffle 26 and the box formed from the first and third air baffle 22, 24 are expediently fastened to the grate bars 17.
  • the second air baffle 26, with its section parallel to the bale surface 20, is so far upstream in the direction of the milling drum 3 or 4 that the air flow rotating with the milling drum 4 does not impinge directly on the bale surface 20, but is deflected by the second air baffle 26 .
  • the reduction in pressure and vortex losses means that the removed fiber flakes can be sucked off with a lower suction power and with a lower suction flow.
  • a magnetic separator 34 is provided on the side of the grate 17 or the second air baffle plate 26 facing away from the bale surface, said magnetic separator 34 running over the entire length of the milling device 5, which smaller metallic particles, in particular can collect from the rotating air flow with the milling drum 3 or 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
EP90914516A 1989-10-05 1990-10-03 Vorrichtung zum öffnen von gepressten faserballen Expired - Lifetime EP0494903B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3933271 1989-10-05
DE3933271A DE3933271A1 (de) 1989-10-05 1989-10-05 Vorrichtung zum oeffnen von gepressten faserballen

Publications (2)

Publication Number Publication Date
EP0494903A1 EP0494903A1 (de) 1992-07-22
EP0494903B1 true EP0494903B1 (de) 1993-10-06

Family

ID=6390883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90914516A Expired - Lifetime EP0494903B1 (de) 1989-10-05 1990-10-03 Vorrichtung zum öffnen von gepressten faserballen

Country Status (5)

Country Link
US (1) US5221053A (un)
EP (1) EP0494903B1 (un)
JP (1) JP2900190B2 (un)
DE (2) DE3933271A1 (un)
WO (1) WO1991005090A1 (un)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030062433A1 (en) * 1996-10-04 2003-04-03 Hughes Michael John Bale handling apparatus
US6685120B2 (en) * 1999-10-12 2004-02-03 Kenny Grellner Hay bale separating apparatus and method
NL2009261C2 (nl) * 2012-08-01 2014-02-04 Trioliet Holding B V Verwerking van blokken of balen voer.
CH714726A1 (de) * 2018-03-07 2019-09-13 Rieter Ag Maschf Abtragarm für einen Ballenöffner.
EP3789524A1 (en) * 2019-09-03 2021-03-10 Maschinenfabrik Rieter AG Bale opener

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB886081A (en) * 1959-09-30 1962-01-03 Joseph Lighthill Improvements in or relating to openers for cotton or other fibres
DE3334222C2 (de) * 1983-09-22 1991-05-08 Hergeth Hollingsworth GmbH, 4408 Dülmen Vorrichtung zum Abtragen von Faserballen mittels einer Öffnervorrichtung
DE3504590A1 (de) * 1985-02-11 1986-08-14 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum oeffnen von faserballen
DE3637351A1 (de) * 1986-01-31 1987-08-13 Truetzschler & Co Vorrichtung zum abtragen von faserballen, z.b. baumwoll- und chemiefaserballen, mittels einer oeffnervorrichtung
DE3602898A1 (de) * 1986-01-31 1987-08-13 Truetzschler & Co Vorrichtung an einem ballenoeffner fuer faserballen, z.b. baumwoll- und chemiefaserballen o. dgl., zum absaugen von faserflocken
DE3631902A1 (de) * 1986-09-19 1988-04-07 Hollingsworth Gmbh Vorrichtung zum abtragen von faserballen aus spinngut
IN172448B (un) * 1988-02-04 1993-08-07 Rieter Ag Maschf
DE8908276U1 (de) * 1988-08-02 1989-12-14 Trützschler GmbH & Co KG, 4050 Mönchengladbach Öffnungsvorrichtung zum Öffnen von gepreßten Faserballen, z.B. Baumwolle- und Zellwollballen u.dgl.
DE3903238A1 (de) * 1989-02-03 1990-08-09 Hollingsworth Gmbh Oeffnungsvorrichtung
DE8904766U1 (de) * 1989-02-03 1989-07-06 Hergeth Hollingsworth GmbH, 4408 Dülmen Öffnungsvorrichtung

Also Published As

Publication number Publication date
WO1991005090A1 (de) 1991-04-18
DE3933271C2 (un) 1993-04-15
JPH05500541A (ja) 1993-02-04
EP0494903A1 (de) 1992-07-22
DE59003034D1 (de) 1993-11-11
JP2900190B2 (ja) 1999-06-02
US5221053A (en) 1993-06-22
DE3933271A1 (de) 1991-04-18

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