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EP0773068B1 - Comminuting machine with a fan - Google Patents

Comminuting machine with a fan Download PDF

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Publication number
EP0773068B1
EP0773068B1 EP96117761A EP96117761A EP0773068B1 EP 0773068 B1 EP0773068 B1 EP 0773068B1 EP 96117761 A EP96117761 A EP 96117761A EP 96117761 A EP96117761 A EP 96117761A EP 0773068 B1 EP0773068 B1 EP 0773068B1
Authority
EP
European Patent Office
Prior art keywords
rotor
fan
conveyor belt
grinding machine
machine 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 - Lifetime
Application number
EP96117761A
Other languages
German (de)
French (fr)
Other versions
EP0773068A2 (en
EP0773068A3 (en
Inventor
Georg Sen. Weiss
Georg Jun. Weiss
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.)
KESLA OXJ
Original Assignee
KESLA Oyj
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 KESLA Oyj filed Critical KESLA Oyj
Publication of EP0773068A2 publication Critical patent/EP0773068A2/en
Publication of EP0773068A3 publication Critical patent/EP0773068A3/en
Application granted granted Critical
Publication of EP0773068B1 publication Critical patent/EP0773068B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/002—Transporting devices for wood or chips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone

Definitions

  • the present invention relates to a comminution machine, in particular for machining of fibrous material, especially for chopping wood.
  • Conventional Shredding machines have a screw conveyor to remove the wood chips on, which is arranged substantially parallel to the rotor axis and which at The shredding process removes the resulting chips.
  • a possibly behind the The suction device arranged in the screw transports the wood chips from the screw an ejection chute. This arrangement has the disadvantage that the screw conveyor Arrangement complicated and expensive.
  • a machine is already out of FI-B-95 109 known with a blower according to the preamble of claim 1.
  • the object of the present invention is to provide a comminution machine which is suitable to work without a screw conveyor.
  • Comminution machine according to the invention is characterized by a in the form of a Suction blower trained suction device that radially outside of the rotor such is arranged so that the chips generated by the rotor immediately behind the Rotor picks up and transported away.
  • the arrangement of a screw conveyor is omitted.
  • the fan is preferably on a conveyor belt with respect to the rotor arranged opposite side of the rotor. With this arrangement, that is on the Conveyor belt transported material to be shredded gripped by the rotor and tangential in one Conveyor belt transported opposite area of the rotor space, from where it is the Suction effect of the blower is transported away underneath.
  • the blower axis is located lower than that in the operating position of the shredding machine Rotor axis. This takes into account the fact that the place of crushing is in the area of the lower periphery of the chopping rotor, with the chips due to the Gravity is a downward tangential path from the rotor periphery describe.
  • the suction fan located below the rotor axis takes it Wood chips comfortably on.
  • a separating screen is arranged between the rotor and the fan.
  • the separating sieve has a mesh size set in such a way that only wood chips with one Pass the dimension below the mesh size and be transported away.
  • the Separating screen is adapted to the rotor periphery and therefore has at least one in cross section sectionally circular course.
  • the conveyor belt is angled in the area of the rotor space and into one Extended area below the rotor. This ensures that in the area of the rotor wood chips going down to an area of the angled one Conveyor belt section hit and transported further in the direction of the blower. In this way, the chips can be prevented from going down.
  • a chopping rotor 4 can be rotated with its rotor axis 1 in a rotor chamber 2 stored. Below the rotor axis 1 and to the left of it is in the horizontal direction a conveyor belt 6,8 out in the area of the rotor space 2 in one obtuse angle is angled.
  • a conveyor belt section 6 runs approximately horizontally, while at an angle, for example a roll Conveyor belt section 8 begins, which extends into an area below the rotor 4 or the rotor space 2 is extended.
  • a counter-conveyor belt 10 which its upper role is fixed, its lower role is self-supporting, so that the conveyor belt 10 depending on the size of the comminuted material is more or less inclined.
  • a separating screen 18 is provided on the circumference of the chopping rotor, which limited and chosen in its mesh size so that only enough fine Wood chips with a diameter below the mesh size the rotor space being able to leave.
  • a suction fan 12 the axis of which 14 is arranged substantially horizontally and perpendicular to the rotor axis 1.
  • the fan axis 14 is located below the rotor axis 1 and is also located lower than the upper run of the conveyor belt section 6.
  • the suction fan 12 has blades 16 which, due to their inclined position, have a suction effect unfold.
  • the overall diameter of the suction fan 12 is chosen to be the blades extend into the area of the center of the rotor axis 1 extend upwards.
  • the overall diameter of the blower is also so chosen so that it covers the entire length of the rotor, so that the fan in its entire depth provides sufficient suction to get everyone out of the Rotor chips emerging from the rotor chamber.
  • the one below the rotor space 2 extended conveyor belt section 8 ensures that outgoing downward Wood chips taken from the conveyor belt 8 in the direction of the blower 12 become.
  • the suction fan at its suction opening is particularly preferred reduced in cross section (not shown) to increase suction achieve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)
  • Shovels (AREA)

Abstract

The machine has a rotor space (2) containing a conveyor band (6) for supplying the wood to be pulverised and a rotary pulverising rotor (4). A suction fan (12) is positioned radially outside of the rotor for extraction of the pulverised wood chips, its axis extending at right angles to the rotor axis (1). Pref. a separation filter (18) is provided between the rotor and the fan determining the size of the pulverised wood chips fed out from the pulverising machine.

Description

Die vorliegende Erfindung betrifft eine Zerkleinerungsmaschine, insbesondere zum Zerspanen von faserigem Gut, speziell zum Zerhacken von Holz. Herkömmliche Zerkleinerungsmaschinen weisen zum Abtransport der Hackschnitzel eine Förderschnecke auf, die im wesentlichen parallel zur Rotorachse angeordnet ist und die beim Zerkleinerungsvorgang anfallenden Schnitzel abtransportiert. Eine gegebenenfalls hinter der Schnecke angeordnete Saugeinrichtung transportiert die Hackschnitzel von der Schnecke zu einem Auswurfschacht. Diese Anordnung hat den Nachteil, daß die Förderschnecke die Anordnung verkompliziert und verteuert. Aus der FI-B-95 109 ist bereits eine Maschine mit einem Gebläse gemäß dem Obergegriff des Anspruchs 1 bekannt.The present invention relates to a comminution machine, in particular for machining of fibrous material, especially for chopping wood. Conventional Shredding machines have a screw conveyor to remove the wood chips on, which is arranged substantially parallel to the rotor axis and which at The shredding process removes the resulting chips. A possibly behind the The suction device arranged in the screw transports the wood chips from the screw an ejection chute. This arrangement has the disadvantage that the screw conveyor Arrangement complicated and expensive. A machine is already out of FI-B-95 109 known with a blower according to the preamble of claim 1.

Aufgabe der vorliegenden Erfindung ist die Angabe einer Zerkleinerungsmaschine, die geeignet ist, ohne eine Förderschnecke zu arbeiten.The object of the present invention is to provide a comminution machine which is suitable to work without a screw conveyor.

Die Aufgabe wird gelöst durch eine Zerkleinerungsmaschine nach Anspruch 1. Die erfindungsgemäße Zerkleinerungsmaschine zeichnet sich durch eine in Form eines Sauggebläses ausgebildete Saugeinrichtung aus, die radial außerhalb des Rotors derart angeordnet ist, daß sie die von dem Rotor erzeugten Hackschnitzel unmittelbar hinter dem Rotor aufnimmt und abtransportiert. Die Anordnung einer Förderschnecke entfällt.The object is achieved by a comminution machine according to claim 1 Comminution machine according to the invention is characterized by a in the form of a Suction blower trained suction device that radially outside of the rotor such is arranged so that the chips generated by the rotor immediately behind the Rotor picks up and transported away. The arrangement of a screw conveyor is omitted.

Bevorzugt ist das Gebläse auf einer dem Förderband bezüglich des Rotors gegenüberliegenden Seite des Rotors angeordnet. Mit dieser Anordnung wird das auf dem Förderband transportierte zu zerkleinernde Gut vom Rotor erfaßt und tangential in einen dem Förderband gegenüberliegenden Bereich des Rotorraums transportiert, von wo es der Saugwirkung des Gebläses unterliegend abtransportiert wird. The fan is preferably on a conveyor belt with respect to the rotor arranged opposite side of the rotor. With this arrangement, that is on the Conveyor belt transported material to be shredded gripped by the rotor and tangential in one Conveyor belt transported opposite area of the rotor space, from where it is the Suction effect of the blower is transported away underneath.

Die Gebläseachse ist in der Betriebsposition der Zerkleinerungsmaschine tiefer gelegen als die Rotorachse. Dadurch wird dem Umstand Rechnung getragen, daß der Ort der Zerkleinerung im Bereich der unteren Peripherie des Hackrotors liegt, wobei die Hackschnitzel aufgrund der Schwerkraft eine nach unten gerichtete tangential von der Rotorperipherie ausgehende Bahn beschreiben. Das unterhalb der Rotorachse angeordnete Sauggebläse nimmt diese Hackschnitzel bequem auf.The blower axis is located lower than that in the operating position of the shredding machine Rotor axis. This takes into account the fact that the place of crushing is in the area of the lower periphery of the chopping rotor, with the chips due to the Gravity is a downward tangential path from the rotor periphery describe. The suction fan located below the rotor axis takes it Wood chips comfortably on.

Es ist bevorzugt, daß ein Trennsieb zwischen Rotor und Gebläse angeordnet ist. Ein derartiges Trennsieb hat eine derart eingestellte Maschenweite, daß nur Hackschnitzel mit einer Abmessung unterhalb der Maschenweite hindurchtreten und abtransportiert werden. Das Trennsieb ist an die Rotorperipherie angepaßt und hat daher im Querschnitt einen zumindest abschnittsweise kreisförmigen Verlauf.It is preferred that a separating screen is arranged between the rotor and the fan. Such a thing The separating sieve has a mesh size set in such a way that only wood chips with one Pass the dimension below the mesh size and be transported away. The Separating screen is adapted to the rotor periphery and therefore has at least one in cross section sectionally circular course.

Das Förderband ist erfindungsgemäß im Bereich des Rotorraum abgewinkelt und in einen Bereich unterhalb des Rotors verlängert. Somit wird sichergestellt, daß im Bereich des Rotors nach unten abgehende Hackschnitzel auf einen Bereich des abgewinkelten Förderbandabschnitts auftreffen und weiter in Richtung des Gebläses transportiert werden. Auf diese Weise kann ein Abgehen der Hackschnitzel nach unten verhindert werden.According to the invention, the conveyor belt is angled in the area of the rotor space and into one Extended area below the rotor. This ensures that in the area of the rotor wood chips going down to an area of the angled one Conveyor belt section hit and transported further in the direction of the blower. In this way, the chips can be prevented from going down.

Alternativ ist ein weiteres Fördermittel unterhalb des Rotors angeordnet, welches mit dem Förderband zusammenwirkt. In dieser Anordnung ist ein separates Fördermittel, beispielsweise ein Förderband, unterhalb des Rotors vorgesehen, um nach unten abgehende Hackschnitzel in Richtung Gebläse zu transportieren, damit auch diese Hackschnitzel noch vom Gebläse aufgenommen werden können.

Fig. 1
zeigt einen Querschnitt einer Ausführungsform der erfindungsgemäßen Zerkleinerungsmaschine.
Alternatively, a further conveyor is arranged below the rotor, which interacts with the conveyor belt. In this arrangement, a separate conveying means, for example a conveyor belt, is provided below the rotor in order to transport wood chips going downwards in the direction of the fan so that these wood chips can also be picked up by the fan.
Fig. 1
shows a cross section of an embodiment of the shredding machine according to the invention.

Ein Hackrotor 4 ist mit seiner Rotorachse 1 in einem Rotorraum 2 drehbar gelagert. Unterhalb der Rotorachse 1 und links von ihr ist in horizontaler Richtung ein Förderband 6,8 geführt, das im Bereich des Rotorraums 2 in einem stumpfen Winkel abgewinkelt ist. Ein Förderbandabschnitt 6 verläuft annähernd horizontal, während an einer Abwinklungsstelle, beispielsweise einer Rolle, ein Förderbandabschnitt 8 beginnt, der bis in einen Bereich unterhalb des Rotors 4 bzw. des Rotorraums 2 verlängert ist.A chopping rotor 4 can be rotated with its rotor axis 1 in a rotor chamber 2 stored. Below the rotor axis 1 and to the left of it is in the horizontal direction a conveyor belt 6,8 out in the area of the rotor space 2 in one obtuse angle is angled. A conveyor belt section 6 runs approximately horizontally, while at an angle, for example a roll Conveyor belt section 8 begins, which extends into an area below the rotor 4 or the rotor space 2 is extended.

Oberhalb des Förderbands 6 befindet sich ein Gegenförderband 10, das an seiner oberen Rolle fest gelagert ist, wobei seine untere Rolle frei tragend ist, so daß das Förderband 10 je nach Größe des herangeförderten Zerkleinerungsgutes mehr oder weniger geneigt ist. Radial außerhalb des Hackrotors 4 ist angepaßt an den Hackrotorumfang ein Trennsieb 18 vorgesehen, das den Rotorraum 2 begrenzt und in seiner Maschenweite so gewählt ist, daß nur genügend feine Hackschnitzel mit einem Durchmesser unterhalb der Maschenweite den Rotorraum verlassen können.Above the conveyor belt 6 there is a counter-conveyor belt 10 which its upper role is fixed, its lower role is self-supporting, so that the conveyor belt 10 depending on the size of the comminuted material is more or less inclined. Radially outside the chopping rotor 4 is adapted a separating screen 18 is provided on the circumference of the chopping rotor, which limited and chosen in its mesh size so that only enough fine Wood chips with a diameter below the mesh size the rotor space being able to leave.

Außerhalb des Trennsiebs 18 befindet sich ein Sauggebläse 12, dessen Achse 14 im wesentlichen horizontal und senkrecht zur Rotorachse 1 angeordnet ist. Die Gebläseachse 14 befindet sich unterhalb der Rotorachse 1 und ist ebenfalls tiefer gelegen als das Obertrum des Förderbandabschnitts 6. Das Sauggebläse 12 weist Schaufelblätter 16 auf, die aufgrund ihrer Schrägstellung eine Saugwirkung entfalten. Der Gesamtdurchmesser des Sauggebläses 12 ist gewählt, daß sich die Schaufelblätter bis in den Bereich des Mittelpunkts der Rotorachse 1 nach oben erstrecken. Der Gesamtdurchmesser des Gebläses ist ferner so gewählt, daß es die Gesamtlänge des Rotors abdeckt, so daß das Gebläse in seiner gesamten Tiefe eine ausreichende Saugwirkung entfaltet, um alle aus dem Rotorraum austretenden Hackschnitzel aufzunehmen. Der unterhalb des Rotorraums 2 verlängerte Förderbandabschnitt 8 stellt sicher, daß nach unten abgehende Hackschnitzel vom Förderband 8 in Richtung des Gebläses 12 mitgenommen werden. Besonders bevorzugt ist das Sauggebläse an seiner Ansaugöffnung im Querschnitt verkleinert (nicht gezeigt), um eine erhöhte Saugwirkung zu erzielen.Outside the separating screen 18 there is a suction fan 12, the axis of which 14 is arranged substantially horizontally and perpendicular to the rotor axis 1. The fan axis 14 is located below the rotor axis 1 and is also located lower than the upper run of the conveyor belt section 6. The suction fan 12 has blades 16 which, due to their inclined position, have a suction effect unfold. The overall diameter of the suction fan 12 is chosen to be the blades extend into the area of the center of the rotor axis 1 extend upwards. The overall diameter of the blower is also so chosen so that it covers the entire length of the rotor, so that the fan in its entire depth provides sufficient suction to get everyone out of the Rotor chips emerging from the rotor chamber. The one below the rotor space 2 extended conveyor belt section 8 ensures that outgoing downward Wood chips taken from the conveyor belt 8 in the direction of the blower 12 become. The suction fan at its suction opening is particularly preferred reduced in cross section (not shown) to increase suction achieve.

Bei der erfindungsgemäßen Zerkleinerungsmaschine entfällt aufgrund der erfindungsgemäß vorgesehenen Gebläseanordnung eine im Stand der Technik vorgesehene Förderschnecke, so daß die erfindungsgemäße Zerkleinerungsmaschine erheblich kostengünstiger und mechanisch weniger aufwendig hergestellt werden kann.In the shredding machine according to the invention there is no need for the inventive provided fan arrangement a provided in the prior art Screw conveyor, so that the shredding machine according to the invention can be produced significantly more cost-effectively and mechanically less complex can.

Claims (5)

  1. Grinding machine having a rotor chamber (2), a conveyor belt (6) guided into the rotor chamber (2) to transport material to be ground and a chipper (4) rotatably arranged in the rotor chamber (2), whereby a suction fan (12) is arranged radially outside the rotor to remove the shreds, the axle (14) of which being arranged essentially laterally of the rotor axis (1), characterised in that the conveyor belt (6, 8) in the area of the rotor chamber (2) is angled and extended in an area underneath the rotor (4).
  2. Grinding machine according to claim 1, characterised in that the fan (12) is arranged on a side of the rotor opposite the conveyor belt (6) in relation to the rotor.
  3. Grinding machine according to claim 1 or 2, characterised in that the fan axle (14) is positioned beneath the rotor axle (1) in the operating position of the grinding machine.
  4. Grinding machine according to one of the previous claims, characterised in that a screen (18) is arranged between the rotor (4) and fan (12).
  5. Grinding machine according to one of the claims 1 to 4, characterised in that a further means of conveying is provided, which is arranged underneath the rotor and cooperates with the conveyor belt (6).
EP96117761A 1995-11-10 1996-11-06 Comminuting machine with a fan Expired - Lifetime EP0773068B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29517867U DE29517867U1 (en) 1995-11-10 1995-11-10 Shredding machine
DE29517867U 1995-11-10

Publications (3)

Publication Number Publication Date
EP0773068A2 EP0773068A2 (en) 1997-05-14
EP0773068A3 EP0773068A3 (en) 1997-06-04
EP0773068B1 true EP0773068B1 (en) 2000-05-03

Family

ID=8015292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117761A Expired - Lifetime EP0773068B1 (en) 1995-11-10 1996-11-06 Comminuting machine with a fan

Country Status (3)

Country Link
EP (1) EP0773068B1 (en)
AT (1) ATE192355T1 (en)
DE (2) DE29517867U1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768352B1 (en) * 1997-09-12 1999-11-12 Saelen Soc Nouv PROCESS FOR REDUCING PLANTS SUCH AS, PARTICULARLY BARE OR UNDENUDE BRANCHES, SHRUBS, FLOWERS, GRASSES OR THE LIKE, IN PIECES
AT405142B (en) * 1997-12-29 1999-05-25 Radauer Herbert Apparatus for comminution of waste
EP2044833A3 (en) 2007-10-04 2011-03-23 Mus-Max GmbH Supply unit for transporting created offcuts from a cutting machine
DE202007015665U1 (en) * 2007-11-09 2009-03-26 Komptech Gmbh Hoe
DE102010050786B3 (en) * 2010-11-10 2012-03-15 Hogha Gmbh Discharge device for a wood chipper
AT516805B1 (en) * 2015-02-02 2016-11-15 Kesla Oyj Blower of a chipper
CN108705639A (en) * 2018-06-20 2018-10-26 广西得力木业开发有限公司 Bark grinding mill

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838823A (en) * 1971-09-30 1974-10-01 Montgomery Ind Int Inc Apparatus for reducing wood and like articles
US4474336A (en) * 1980-07-07 1984-10-02 Gehl Company Method and means for adjusting a forage harvester shear bar relative to a rotating chopping cylinder
AT385231B (en) * 1986-01-17 1988-03-10 Starchl Maximilian DRUM CHOPPER
US4961539A (en) * 1989-08-01 1990-10-09 Deem K Michael Truck-mounted pallet chipper
DE4400297C2 (en) * 1994-01-07 1996-01-11 Eco Umwelttechnik Vertriebs Gm Shredding device
FI95109C (en) * 1994-06-10 1995-12-27 Pekka Lahti Drum chipper Order

Also Published As

Publication number Publication date
DE29517867U1 (en) 1996-01-04
EP0773068A2 (en) 1997-05-14
EP0773068A3 (en) 1997-06-04
DE59605118D1 (en) 2000-06-08
ATE192355T1 (en) 2000-05-15

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