EP2718069B1 - Device and method for wetting wood particles - Google Patents

Device and method for wetting wood particles Download PDF

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Publication number
EP2718069B1
EP2718069B1 EP12716433.3A EP12716433A EP2718069B1 EP 2718069 B1 EP2718069 B1 EP 2718069B1 EP 12716433 A EP12716433 A EP 12716433A EP 2718069 B1 EP2718069 B1 EP 2718069B1
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Prior art keywords
component
nozzles
nozzle
drop shaft
medium
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EP12716433.3A
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German (de)
French (fr)
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EP2718069A1 (en
Inventor
Paul Stöckl
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Fritz Egger GmbH and Co OG
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Fritz Egger GmbH and Co OG
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Priority to PL12716433T priority Critical patent/PL2718069T3/en
Publication of EP2718069A1 publication Critical patent/EP2718069A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0263—Mixing the material with binding agent by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles

Definitions

  • the invention relates to a device according to claim 1 for wetting of wood particles with a medium containing a chute having at least one inner wall and in a direction free fall of the wood particles allowed, and at least one nozzle, wherein the at least one nozzle via a supply line with a Reservoir is connected to the medium.
  • the invention relates to a method according to claim 13 for wetting wood particles with a medium, in particular using a device of the type described above, in which the following steps are performed: generating a stream of wood particles in a chute and spraying the medium onto the wood particles of the wood particle stream ,
  • wood particles are understood to be any form of small-sized material made of the material wood, that is to say, in particular, chips, OSB strands, fibers and / or flour.
  • wetting of such wood particles takes place, for example, for gluing them, in which case the wood particles are sprayed with a binder. Wetting may additionally or alternatively also be carried out with an additive or an emulsion.
  • the medium used for wetting may be powdery or liquid.
  • Wetting of wood particles with a binder for the purpose of gluing is for example from DE 203 17 633 U1 known.
  • the wood particles are transported into a chute in which they fall freely due to gravity.
  • Free fall means in the context of the invention that the movement of the wood particles in the chute in the direction is caused solely by the weight of the wood particles, but not by an air flow, which is introduced into the chute for transport purposes. Due to the free fall, with the help of a broom roller pair, a relatively narrow particle curtain can be generated, which trickles down in the middle between the inner walls of the chute. This particle flow and in particular particle curtain is then, in free fall, with the said medium, in particular the binder, sprayed, that is sprayed from nozzles.
  • the nozzles required for this purpose are arranged laterally on the inner walls of the chute, wherein the spray direction is substantially transverse to the direction of fall or direction of the wood particle stream and thus extends transversely to the direction of the chute.
  • the wood particle stream or particle curtain is thereby sprayed from two opposite sides.
  • the wood particles in this case the large strands, are in large-volume, slow-running drums (20 to 25 rpm) with a diameter of, for example, 3 m with binder to spray and mix.
  • the gluing is carried out by spraying over several nozzles, which in the sense of the invention also so-called atomizers (atomizers) are understood, which are arranged one behind the other, for example, along the longitudinal axis of the mixer drum and the binder on the generated by the drum rotation Spray the beach curtain.
  • atomizers atomizers
  • the powder is blown into the rotating drum.
  • Such drums have a capacity of, for example, 25 t / h, wherein in addition an inclination of the drum, a transport of the wood particles along the drum axis is effected.
  • the wetted wood particles are pressed in subsequent manufacturing steps to wood materials, such as an OSB board.
  • a problem with the wetting or gluing devices described above is that the partially strongly glued wood particles adhere to the insides of the plant parts and form packages that must be removed regularly. Expensive shutdowns of the plant and complex maintenance work are associated with it.
  • a device for wetting wood particles with a medium, in particular a powdery or liquid medium, preferably a binder, an additive and / or an emulsion containing a chute the Has at least one inner wall and in a direction (corresponding to the falling direction of the wood particles or the direction of the wood particle stream) a free fall of the wood particles allowed, and at least one, preferably a plurality, nozzle (s), wherein the at least one nozzle is connected via a supply line to a reservoir for the medium, wherein the device has a projecting into an operating position into the interior of the chute first component wherein at least one nozzle is disposed on the first component and wherein all of the nozzles disposed on the first component are spaced from each inner wall of the chute in the operative position.
  • the inner walls of the chute are in particular free of other nozzles connected to a reservoir for the powdery or liquid medium, so that the powdery or liquid medium is not sprayed
  • a first component with one or more nozzles projects into the chute, wherein the nozzles are all spaced from the chute when the first component is in the operating position, it is achieved that the nozzles during operation of the device not laterally of the particle flow, but are arranged in the particle stream.
  • the distance between each inner wall and each nozzle is at least 10%, preferably at least 20%, particularly preferably at least 30%, of the distance between mutually opposite inner walls of the chute, that is the inner light in the radial direction of the chute.
  • one or more the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the said component has a spray direction which extends at an angle of at most 60 °, preferably at most 30 °, particularly preferably at most 15 °, with respect to the direction of advance of the chute.
  • the spray direction is parallel to the direction of the chute.
  • the spray direction means the nozzle axis and thus the center axis of the spray emerging from the nozzle, that is to say the main exit direction. Since the spray does not exit as a parallel jet but in a fanned-out manner, the at least one nozzle according to the present invention also has a so-called spray angle, for example a Spray angle of at most 45 °, preferably at most 30 °, more preferably at most 15 °.
  • a further component in addition to the first component, a further component, in particular a component of identical construction to the first component, is provided, which is movable into an operating position into the interior of the chute and is arranged on the at least one nozzle, of each inner wall the chute is spaced when the respective further component is in its operating position.
  • the first component can be moved from its operating position into a maintenance position, wherein subsequently or simultaneously the further component can be moved from a maintenance position into an operating position.
  • the maintenance position is in each case preferably arranged outside of the chute.
  • the operating position is in each case arranged in the interior of the chute, preferably in such a way that the nozzles are arranged in the operating position of the respective component during operation of the device in the particle stream, particularly preferably in the middle of the particle flow.
  • the component located in its operating position can be quickly replaced by the further component for maintenance purposes, whereby the plate production, for example the production of OSB plates, which is downstream of the device according to the invention and the method according to the invention, does not have to be interrupted .
  • the changeover time between the first and the further component is ideally so short that any bunkers already present anyway can buffer a short stoppage of the wetting device.
  • the first and / or further component is a nozzle bar.
  • a nozzle bar is understood in the context of the invention, an elongate member.
  • This component is bar-shaped or sword-shaped (wing-shaped).
  • the nozzles are preferably arranged along the longitudinal extent of the component at this, in particular at regular intervals from each other.
  • an elongate component in the form of a beam or sword it is also conceivable to design the first and / or further component in the form of a plate or in a ring, in which case the nozzles can be arranged in a circle.
  • the nozzles are arranged on the underside of the component and in particular the component has a greater width (meaning the dimension transverse to the direction of the chute) than the nozzles, so that the nozzles themselves not come into contact with the wood particle stream, but are covered by the component against the wood particle stream.
  • the component such as the nozzle beam, then projects in its respective operating position in the chute and in particular has the same distance to both opposite inner walls of the chute. If the component has an elongated shape, ie if its longitudinal extension is greater than its width and height, the component preferably runs parallel to two opposite inner walls of the chute.
  • one or more of the nozzles is / are, as stated, in particular, the plurality of nozzles, preferably each nozzle, of the first and / or further component arranged on the pointing in the direction of the underside of the component.
  • the nozzles are ideally protected from contact with the wood particle stream.
  • the stream of wood particles which in particular can also be a particle curtain, is thereby sprayed in a simple manner from the inside out with the medium, for example the binder.
  • the angle ranges mentioned above for the first component between spraying direction and course direction apply in particular also to the further component, which, as stated, is preferably identical in construction to the first component.
  • one or more of the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the further component has a spray direction which is at an angle of at most 60 °, preferably at most 30 °, more preferably at most 15 ° , runs with respect to the course direction of the chute.
  • a parallel course of spraying direction and course direction is also advantageous here.
  • the first and / or further component has a cross-section widening in sections in the direction of the chute. It is also conceivable that the first and / or further component has a cross-section widening and then tapering in the direction of the chute, thus forming a sash profile, the cross-section being selected in particular from the group comprising an elliptical, an egg-shaped, an eye-shaped and one drop-shaped cross-section. These cross-sections have in common that they gradually widen or taper while avoiding edges, which prevents an attachment of wood particles on the component.
  • the wider part of the component is directed counter to the direction of fall of the particle stream of wood, that is to say the course direction of the chute.
  • the cross-sectional shapes described above are particularly advantageous if the component, for example the nozzle bar, is arranged in the wood particle stream and divides it substantially in the middle. The individual wood particles are not deflected by such a profile appreciably in the direction of the inner walls of the chute.
  • the first component is movably mounted and in particular at least partially movable out of the chute.
  • the position outside of the chute corresponds to the mentioned maintenance position.
  • an elongated component that is, in particular a nozzle bar or blade
  • this is preferably longitudinally displaceable.
  • the first component and the further component are arranged longitudinally behind one another and in particular are connected to one another. In this way, a construction can be created in which the further component is movable into the interior of the chute when the first component is moved out of the chute.
  • this facilitates maintenance and, on the other hand, prevents a relatively long standstill of said wetting device.
  • a nozzle downstream buffer which may also be realized by a mixing screw or drum, a pressing device downstream of the wetting device for pressing the wetted wood particles need not be stopped.
  • one or more of the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the first and / or further component is / are activatable and deactivatable.
  • the nozzles of the respective component which is currently in the maintenance position, are deactivated, whereas the nozzles of the component in its operating position are activated.
  • one or more nozzles of one and the same component can be activated or deactivated individually in order, for example, to adapt the amount of escaping medium to the properties of the wood particle stream, for example the material, the particle size, the density of the wood particle stream, etc.
  • one or more of the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the first and / or further component can also be pivotable.
  • the at least one nozzle is connected to the reservoir via a supply line.
  • a pump between the reservoir and the nozzle or nozzles is arranged, which pumps or sucks the medium through the supply line, that is, the medium is pressurized by the pump.
  • each supply line can be connected to its own pump, with which the medium can be pumped or sucked through the supply line.
  • the nozzles connected to this supply line can thus also be deactivated automatically.
  • the supply line is released, the nozzles are then activated.
  • the amount of medium with which the wood particles are to be wetted preferably automatically control.
  • additional supply lines can be used.
  • one or more of the supply lines can also be connected to a further reservoir for correspondingly different media, such as additives, emulsions or cleaning fluids.
  • the at least one supply line runs, and preferably all supply lines extend through the interior of the first and / or further component.
  • the supply lines are particularly well protected.
  • the risk of packaging of wood particles is further reduced.
  • At least one guide device in the Running direction before, next to and / or behind the at least one nozzle, at least one guide device, in particular at least one baffle and / or an air nozzle (a connected to an air reservoir or an air-blowing nozzle), arranged / in particular configured such that the wood particle stream is thereby deflected and / or reshaped.
  • the air jets are not connected to the reservoir for the medium with which the wood particles of the wood particle stream are wetted.
  • the guide device is preferably arranged in or on at least one of the inner walls of the chute.
  • the medium is sprayed in a spray direction, which extends at an angle of at most 60 °, preferably at most 30 °, more preferably at most 15 °, based on the direction of the chute.
  • spraying direction and course direction are parallel.
  • the amount, the spraying direction and / or the spraying angle of the sprayed medium are set as a function of the properties of the wood particle stream, in particular depending on the material, particle size and / or density of the particle stream.
  • the adjustment takes place in particular automatically.
  • the device described above may have a control device.
  • Fig. 1 shows a device 1 for wetting wood particles 2 with a medium 3.
  • the wood particles 2 are strands for the OSB plate production.
  • the medium 3 is a liquid binder.
  • the device 1 has a chute 4, which has two opposite inner walls 4.1 and in a direction X, which corresponds to the direction of the wood particle stream 2.1 or the falling direction of the wood particles, a free fall of the wood particles 2 allowed.
  • the wood particles 2 are collected in a container 11, which is arranged vertically above the chute 4 and from which the individual wood particles 2 enter the chute.
  • Two opposing broom rollers 12 form the wood particle stream 2.1 to a curtain-shaped wood particle stream, also called particle curtain, which in the further course of the chute 4 as follows with the medium 3, here the binder is sprayed.
  • the device 1 has a plurality of nozzles 5, wherein the nozzles 5 are connected via supply lines 6, which are provided with a pump 6.1, with a reservoir 7 for the medium 3.
  • the nozzles 5 are arranged on a first component 8.1 in the form of a nozzle bar 9, which in an operating position, in the FIGS. 1 and 4 is shown, projects into the interior of the chute 4.
  • the beam- or sword-shaped component 8.1 is arranged so that in the operating position, all nozzles 5 of this component are spaced from the inner walls 4.1 of the chute 4.
  • the chute 4 is otherwise, that is, with the exception of the component 8.1, free of other components with nozzles and also free of other nozzles, that is, there are no nozzles arranged in the inner walls or on the inner walls 4.1 of the chute.
  • curtain-shaped wood particle stream 2.1 passes in the vertical direction X on the nozzle bar 9 over, with the wood particle stream 2.1 divides by the shape of the nozzle beam 9 and thereby from the nozzles 5; which are arranged on the underside 8a of the nozzle bar 9, is showered from the inside out. In this way, the wood particles 2 are already wetted at least partially with the medium 3.
  • a mixing drum or screw 11 which leads by rotation to a mixing of wood particles 2 and medium 3 and also serves as a buffer. From this mixing drum 11 of the mixed wood particle stream then passes to further production, which is not shown here is.
  • the further production can be, for example, a pressing device for producing an OSB board.
  • Fig. 4 shows one opposite Fig. 1 90 ° rotated side view.
  • a structurally identical further component 8.2 is provided in addition to the first sword-shaped component 8.1.
  • the first component 8.1 and the associated second component 8.2 can be moved parallel to the inner walls 4.1 of the chute 4, in each case from an operating position to a maintenance position.
  • the component 8.1 in its operating position and can be moved to the left in a maintenance position shown in dashed lines.
  • the component 8.2 from the in Fig. 4 shown maintenance position moved to the left in its operating position and thereby replaced the component 8.1.
  • a plurality of supply lines 6 are provided which connect all the nozzles 5 of both components 8.1 and 8.2 with the reservoir 7.
  • the supply lines 6 run through the interior of the components 8.1 and 8.2.
  • the latter is also in Fig. 2 represented, wherein it is also recognizable that each supply line 6 is connected to other nozzles 5.
  • a plate-shaped or annular component may also be provided instead of such an elongate component.
  • Fig. 3 shows various cross-sectional shapes of a component, in particular an elongated nozzle bar 9 or an annular member.
  • the nozzles 5 are each arranged on the underside 8a.
  • the respective component, in this case the nozzle bar 9 has a cross-section widening in the direction X of the chute 4 and then tapering and thus forms a sash profile.
  • the cross section of the nozzle bar 9 in Fig. 3a ) is eye-shaped.
  • the cross section of the nozzle bar 9 in Fig. 3b ) is elliptical.
  • the cross section of the nozzle bar 9 in Fig. 3c is ovate and the cross section of the nozzle bar 9 in Fig.
  • the spray direction S of the nozzle 5 is parallel to the direction X of the chute 4.
  • the nozzles 5 but also have a spray direction S, which is at an angle to the direction X, as shown in Fig. 5 is shown.
  • the spray direction S extends, for example, at an angle ⁇ of at most 60 °, preferably at most 30 °, particularly preferably at most 15 °, relative to the direction X of the chute 4.
  • the spray angle ⁇ of the nozzles 5 can be at most 45 °, preferably at most 30 °, more preferably at most 15 °.
  • a wood particle stream 2.1 is first generated in a chute 4, wherein the wood particles 2 fall freely in the chute 4.
  • the wood particle stream 2.1 is formed by broom rollers 12 into a curtain which is directed to a nozzle beam-shaped component 8.1, on the underside 8a a plurality of nozzles 5 are arranged, which spray a binder as a medium 3 on the wood particles 2 from a location of each side wall 4.1 of the chute is spaced.
  • a particular automatic adjustment of the amount, the spray direction S and the spray angle ⁇ of the sprayed medium 3 depending on properties of the wood particle stream 2.1 via a control device 13.
  • Such properties may be the material, particle size, density, etc. of the wood particle stream 2.1.

Description

Die Erfindung betrifft eine Vorrichtung gemäß Anspruch 1 zur Benetzung von Holzpartikeln mit einem Medium enthaltend einen Fallschacht, der mindestens eine Innenwand aufweist und in einer Verlaufsrichtung einen freien Fall der Holzpartikel erlaubt, und mindestens eine Düse, wobei die mindestens eine Düse über eine Versorgungsleitung mit einem Reservoir für das Medium verbunden ist.The invention relates to a device according to claim 1 for wetting of wood particles with a medium containing a chute having at least one inner wall and in a direction free fall of the wood particles allowed, and at least one nozzle, wherein the at least one nozzle via a supply line with a Reservoir is connected to the medium.

Ferner betrifft die Erfindung ein Verfahren gemäß Anspruch 13 zur Benetzung von Holzpartikeln mit einem Medium, insbesondere unter Verwendung einer Vorrichtung der vorangehend beschriebenen Art, bei dem die folgenden Schritte durchgeführt werden: Erzeugen eines Holzpartikelstroms in einem Fallschacht und Sprühen des Mediums auf die Holzpartikel des Holzpartikelstroms.Furthermore, the invention relates to a method according to claim 13 for wetting wood particles with a medium, in particular using a device of the type described above, in which the following steps are performed: generating a stream of wood particles in a chute and spraying the medium onto the wood particles of the wood particle stream ,

Im Sinne der Erfindung wird unter Holzpartikeln jede Form von kleinstückigem Material aus dem Material Holz verstanden, das heißt insbesondere Späne, OSB-Strands, Fasern und/oder Mehl.For the purposes of the invention, wood particles are understood to be any form of small-sized material made of the material wood, that is to say, in particular, chips, OSB strands, fibers and / or flour.

Eine Benetzung solcher Holzpartikel erfolgt beispielsweise zur Beleimung derselben, wobei in diesem Fall die Holzpartikel mit einem Bindemittel bedüst werden. Eine Benetzung kann zusätzlich oder alternativ aber auch mit einem Additiv oder einer Emulsion erfolgen. Das zur Benetzung verwendete Medium kann dabei pulverförmig oder flüssig sein.Wetting of such wood particles takes place, for example, for gluing them, in which case the wood particles are sprayed with a binder. Wetting may additionally or alternatively also be carried out with an additive or an emulsion. The medium used for wetting may be powdery or liquid.

Eine Benetzung von Holzpartikeln mit einem Bindemittel zum Zwecke der Beleimung ist beispielsweise aus der DE 203 17 633 U1 bekannt. Hier werden die Holzpartikel in einen Fallschacht transportiert, in welchem sie aufgrund der Erdanziehungskraft frei fallen. Frei fallen bedeutet im Sinne der Erfindung, dass die Bewegung der Holzpartikel in dem Fallschacht in Verlaufsrichtung allein vom Gewicht der Holzpartikel hervorgerufen wird, nicht aber durch eine Luftströmung, die zu Transportzwecken in den Fallschacht eingeleitet wird. Durch den freien Fall läßt sich, unter Zuhilfenahme von einem Besenwalzenpaar, ein relativ schmaler Partikelvorhang erzeugen, der etwa in der Mitte zwischen den Innenwänden des Fallschachtes herab rieselt. Dieser Partikelstrom und insbesondere Partikelvorhang wird dann, noch im freien Fall, mit dem besagten Medium, insbesondere dem Bindemittel, bedüst, das heißt aus Düsen besprüht. Die dazu erforderlichen Düsen sind seitlich an den Innenwänden des Fallschachtes angeordnet, wobei die Sprührichtung im Wesentlichen quer zur Fallrichtung bzw. Richtung des Holzpartikelstroms und damit quer zur Verlaufsrichtung des Fallschachtes verläuft. Der Holzpartikelstrom bzw. Partikelvorhang wird dadurch von zwei gegenüberliegenden Seiten bedüst.Wetting of wood particles with a binder for the purpose of gluing is for example from DE 203 17 633 U1 known. Here, the wood particles are transported into a chute in which they fall freely due to gravity. Free fall means in the context of the invention that the movement of the wood particles in the chute in the direction is caused solely by the weight of the wood particles, but not by an air flow, which is introduced into the chute for transport purposes. Due to the free fall, with the help of a broom roller pair, a relatively narrow particle curtain can be generated, which trickles down in the middle between the inner walls of the chute. This particle flow and in particular particle curtain is then, in free fall, with the said medium, in particular the binder, sprayed, that is sprayed from nozzles. The nozzles required for this purpose are arranged laterally on the inner walls of the chute, wherein the spray direction is substantially transverse to the direction of fall or direction of the wood particle stream and thus extends transversely to the direction of the chute. The wood particle stream or particle curtain is thereby sprayed from two opposite sides.

Eine Innen- und Außenbenetzung von Holzpartikeln mit einem Bindemittel ist beschrieben in US 4.323.314 .An internal and external wetting of wood particles with a binder is described in US 4,323,314 ,

Bei der Beleimung von Strands in der OSB-Herstellung (Oriented Strand Board-Herstellung) ist es auch bekannt, die Holzpartikel, hier die großflächigen Strands, in großvolumigen, langsam laufenden Trommeln (20 bis 25 U/min) mit einem Durchmesser von beispielsweise 3 m mit Bindemittel zu besprühen und zu durchmischen. Die Beleimung erfolgt durch Besprühung über mehrere Düsen, worunter im Sinne der Erfindung auch sogenannte Atomizer (Zerstäuber) verstanden werden, die hintereinander beispielsweise entlang der Längsachse der Mischertrommel angeordnet sind und das Bindemittel auf den durch die Trommelrotation erzeugten Strandvorhang sprühen. Bei der Beleimung mit Pulverleim wird das Pulver in die rotierende Trommel eingeblasen. Solche Trommeln haben eine Leistung von beispielsweise 25 t/h, wobei zusätzlich durch eine Schrägstellung der Trommel ein Transport der Holzpartikel entlang der Trommelachse bewirkt wird.When gluing strands in OSB production (Oriented Strand Board Production), it is also known that the wood particles, in this case the large strands, are in large-volume, slow-running drums (20 to 25 rpm) with a diameter of, for example, 3 m with binder to spray and mix. The gluing is carried out by spraying over several nozzles, which in the sense of the invention also so-called atomizers (atomizers) are understood, which are arranged one behind the other, for example, along the longitudinal axis of the mixer drum and the binder on the generated by the drum rotation Spray the beach curtain. When gluing with powder glue, the powder is blown into the rotating drum. Such drums have a capacity of, for example, 25 t / h, wherein in addition an inclination of the drum, a transport of the wood particles along the drum axis is effected.

Die benetzten Holzpartikel werden in nachfolgenden Fertigungsschritten zu Holzwerkstoffen, beispielsweise einer OSB-Platte, verpresst.The wetted wood particles are pressed in subsequent manufacturing steps to wood materials, such as an OSB board.

Problematisch an den zuvor beschriebenen Benetzungs- bzw. Beleimvorrichtungen ist, dass die partiell stark beleimten Holzpartikel an den Innenseiten der Anlagenteile anhaften und Anpackungen entstehen, die regelmäßig abgetragen werden müssen. Teure Stillstände der Anlage und aufwendige Wartungsarbeiten sind damit verbunden.A problem with the wetting or gluing devices described above is that the partially strongly glued wood particles adhere to the insides of the plant parts and form packages that must be removed regularly. Expensive shutdowns of the plant and complex maintenance work are associated with it.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Vorrichtung und ein Verfahren zur Benetzung von Holzpartikeln anzugeben, mit welchem das Risiko von Anpackungen verringert wird.It is therefore the object of the present invention to provide a device and a method for wetting wood particles, with which the risk of packaging is reduced.

Die zuvor hergeleitete und aufgezeigte Aufgabe wird gemäß einer ersten Lehre der vorliegenden Erfindung gelöst durch eine Vorrichtung zur Benetzung von Holzpartikeln mit einem Medium, insbesondere einem pulverförmigen oder flüssigen Medium, vorzugsweise einem Bindemittel, einem Additiv und/oder einer Emulsion, enthaltend einen Fallschacht, der mindestens eine Innenwand aufweist und in einer Verlaufsrichtung (entspricht der Fallrichtung der Holzpartikel bzw. der Richtung des Holzpartikelstroms) einen freien Fall der Holzpartikel erlaubt, und mindestens eine, vorzugsweise mehrere, Düse(n), wobei die mindestens eine Düse über eine Versorgungsleitung mit einem Reservoir für das Medium verbunden ist, wobei die Vorrichtung ein in einer Betriebsstellung ins Innere des Fallschachtes ragendes erstes Bauteil aufweist, wobei mindestens eine Düse an dem ersten Bauteil angeordnet ist und wobei alle Düsen, die an dem ersten Bauteil angeordnet sind, in der Betriebsstellung von jeder Innenwand des Fallschachtes beabstandet sind. Die Innenwände des Fallschachtes sind insbesondere frei von anderen mit einem Reservoir für das pulverförmige oder flüssige Medium verbundenen Düsen, sodass das pulverförmige oder flüssige Medium nicht von den Innenwänden aus auf den Holzpartikelstrom gesprüht wird.The previously derived and indicated object is achieved according to a first teaching of the present invention by a device for wetting wood particles with a medium, in particular a powdery or liquid medium, preferably a binder, an additive and / or an emulsion containing a chute, the Has at least one inner wall and in a direction (corresponding to the falling direction of the wood particles or the direction of the wood particle stream) a free fall of the wood particles allowed, and at least one, preferably a plurality, nozzle (s), wherein the at least one nozzle is connected via a supply line to a reservoir for the medium, wherein the device has a projecting into an operating position into the interior of the chute first component wherein at least one nozzle is disposed on the first component and wherein all of the nozzles disposed on the first component are spaced from each inner wall of the chute in the operative position. The inner walls of the chute are in particular free of other nozzles connected to a reservoir for the powdery or liquid medium, so that the powdery or liquid medium is not sprayed from the inner walls on the stream of wood particles.

Indem erfindungsgemäß ein erstes Bauteil mit einer oder mehreren Düsen in den Fallschacht ragt, wobei die Düsen alle von dem Fallschacht beabstandet sind, wenn das erste Bauteil in der Betriebsstellung ist, wird erreicht, dass die Düsen beim Betrieb der Vorrichtung nicht seitlich des Partikelstroms, sondern im Partikelstrom angeordnet sind. Vorzugsweise beträgt dabei der Abstand zwischen jeder Innenwand und jeder Düse mindestens 10%, bevorzugt mindestens 20%, besonders bevorzugt mindestens 30%, des Abstands zwischen einander jeweils gegenüberliegenden Innenwänden des Fallschachtes, das heißt der Innenlichte in radialer Richtung des Fallschachtes. Dadurch wird eine besonders einfache Benetzung der Holzpartikel erreicht, und zwar auch schon mit einem relativ geringen Bedüsungsdruck, da die Düsen im Vergleich zum Stand der Technik wesentlich näher an den Partikeln des Partikelstroms angeordnet sind. Besonders vorteilhaft hat sich dabei erwiesen, wenn eine oder mehrere der Düsen, insbesondere die Mehrzahl der Düsen, vorzugsweise jede Düse, des besagten Bauteils eine Sprührichtung aufweist, die in einem Winkel von höchstens 60°, bevorzugt höchstens 30°, besonders bevorzugt höchstens 15°, bezogen auf die Verlaufsrichtung des Fallschachtes verläuft. Vorteilhafterweise verläuft die Sprührichtung parallel zur Verlaufsrichtung des Fallschachtes.By according to the invention a first component with one or more nozzles projects into the chute, wherein the nozzles are all spaced from the chute when the first component is in the operating position, it is achieved that the nozzles during operation of the device not laterally of the particle flow, but are arranged in the particle stream. Preferably, the distance between each inner wall and each nozzle is at least 10%, preferably at least 20%, particularly preferably at least 30%, of the distance between mutually opposite inner walls of the chute, that is the inner light in the radial direction of the chute. This results in a particularly simple wetting of the wood particles is achieved, even with a relatively low distressing pressure, since the nozzles are arranged much closer to the particles of the particle flow compared to the prior art. It has proven to be particularly advantageous if one or more the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the said component has a spray direction which extends at an angle of at most 60 °, preferably at most 30 °, particularly preferably at most 15 °, with respect to the direction of advance of the chute. Advantageously, the spray direction is parallel to the direction of the chute.

Es hat sich überraschenderweise gezeigt, dass der zuvor beschriebene Aufbau Anpackungen von Holzpartikeln und Bindemittel an den Innenwänden des Fallschachtes gegenüber dem Stand der Technik deutlich reduziert. Dies ist unter anderem darauf zurückzuführen, dass die Düsen durch ihre Anordnung im Innern des Fallschachtes, beispielsweise in der Mitte zwischen den Innenwänden, und damit durch ihre Anordnung im Holzpartikelstrom die Holzpartikel besonders gut benetzen und aufgrund eines vergleichsweise geringen Düsendrucks auch nicht so stark in Richtung der Innenwände des Fallschachtes ablenken. Insbesondere bei einer Sprührichtung in den vorgenannten Winkelbereichen und gerade bei einer Sprührichtung parallel zu den Innenwänden des Fallschachtes wird das Risiko, dass benetzte Holzpartikel in Richtung der Innenwände gelenkt werden, noch weiter reduziert.It has surprisingly been found that the above-described construction significantly reduces packaging of wood particles and binder on the inner walls of the chute compared to the prior art. This is due, inter alia, to the fact that the nozzles wet particularly well by their arrangement in the interior of the chute, for example in the middle between the inner walls, and thus by their arrangement in the wood particle stream, the wood particles and not so strong in the direction of a comparatively low nozzle pressure Distract the inner walls of the chute. Particularly in the case of a spray direction in the abovementioned angle ranges and especially in the case of a spray direction parallel to the inner walls of the chute, the risk of wetted wood particles being directed in the direction of the inner walls is further reduced.

Mit der Sprührichtung ist im Sinne der Erfindung die Düsenachse und damit die Mittelachse des aus der Düse austretenden Sprühnebels gemeint, also die Hauptaustrittsrichtung. Da der Sprühnebel nicht als paralleler Strahl, sondern aufgefächert austritt, weist die mindestens eine Düse gemäß der vorliegenden Erfindung auch einen sogenannten Sprühwinkel auf, beispielsweise ein Sprühwinkel von höchstens 45°, bevorzugt höchstens 30°, besonders bevorzugt höchstens 15°.For the purposes of the invention, the spray direction means the nozzle axis and thus the center axis of the spray emerging from the nozzle, that is to say the main exit direction. Since the spray does not exit as a parallel jet but in a fanned-out manner, the at least one nozzle according to the present invention also has a so-called spray angle, for example a Spray angle of at most 45 °, preferably at most 30 °, more preferably at most 15 °.

Gemäß einer Ausgestaltung der erfindungsgemäßen Vorrichtung ist zusätzlich zu dem ersten Bauteil ein weiteres Bauteil, insbesondere ein mit dem ersten Bauteil baugleiches Bauteil, vorgesehen, das in eine Betriebsstellung ins Innere des Fallschachtes bewegbar ist und an dem mindestens eine Düse angeordnet ist, die von jeder Innenwand des Fallschachtes beabstandet ist, wenn das jeweilige weitere Bauteil in seiner Betriebsstellung ist. Dadurch kann, beispielsweise zu Wartungszwecken, das erste Bauteil aus seiner Betriebsstellung in eine Wartungsstellung verfahren werden, wobei anschließend oder gleichzeitig das weitere Bauteil von einer Wartungsstellung in eine Betriebsstellung verfahren werden kann. Die Wartungsstellung ist dabei jeweils bevorzugt außerhalb des Fallschachtes angeordnet. Die Betriebsstellung ist jeweils im Innern des Fallschachtes angeordnet, vorzugsweise derart, dass die Düsen in der Betriebsstellung des jeweiligen Bauteils beim Betrieb der Vorrichtung im Partikelstrom angeordnet sind, besonders bevorzugt inmitten des Partikelstroms. Auf die zuvor beschriebene Weise kann zu Wartungszwecken das jeweils in seiner Betriebsstellung befindliche Bauteil schnell durch das weitere Bauteil ersetzt werden, wodurch die Plattenproduktion, beispielsweise die Produktion von OSB-Platten, die der erfindungsgemäßen Vorrichtung und dem erfindungsgemäßen Verfahren nachgeschaltet ist, nicht unterbrochen werden muss. Die Wechselzeit zwischen dem ersten und dem weiteren Bauteil ist idealerweise so kurz, dass gegebenenfalls ohnehin vorhandene Bunker einen kurzen Stillstand der Benetzungsvorrichtung abpuffern können.According to one embodiment of the device according to the invention, in addition to the first component, a further component, in particular a component of identical construction to the first component, is provided, which is movable into an operating position into the interior of the chute and is arranged on the at least one nozzle, of each inner wall the chute is spaced when the respective further component is in its operating position. As a result, for example for maintenance purposes, the first component can be moved from its operating position into a maintenance position, wherein subsequently or simultaneously the further component can be moved from a maintenance position into an operating position. The maintenance position is in each case preferably arranged outside of the chute. The operating position is in each case arranged in the interior of the chute, preferably in such a way that the nozzles are arranged in the operating position of the respective component during operation of the device in the particle stream, particularly preferably in the middle of the particle flow. In the manner described above, the component located in its operating position can be quickly replaced by the further component for maintenance purposes, whereby the plate production, for example the production of OSB plates, which is downstream of the device according to the invention and the method according to the invention, does not have to be interrupted , The changeover time between the first and the further component is ideally so short that any bunkers already present anyway can buffer a short stoppage of the wetting device.

Gemäß einer weiteren Ausgestaltung der erfindungsgemäßen Vorrichtung ist das erste und/oder weitere Bauteil ein Düsenbalken. Unter einem Düsenbalken wird im Sinne der Erfindung ein längliches Bauteil verstanden. Dieses Bauteil ist balkenförmig bzw. schwertförmig (flügelförmig) ausgebildet. In diesem Fall sind die Düsen bevorzugt entlang der Längserstreckung des Bauteils an diesem angeordnet, und zwar insbesondere in regelmäßigen Abständen voneinander. Anstelle eines länglichen Bauteils in Form eines Balkens bzw. Schwerts ist es auch denkbar, das erste und/oder weitere Bauteil tellerförmig oder ringförmig auszugestalten, wobei in diesem Fall die Düsen kreisförmig angeordnet sein können. Unabhängig von der Form des Bauteils ist es dabei bevorzugt, wenn die Düsen an der Unterseite des Bauteils angeordnet sind und insbesondere das Bauteil eine größere Breite (gemeint ist die Dimension quer zur Verlaufsrichtung des Fallschachtes) hat als die Düsen, so dass die Düsen selbst nicht mit dem Holzpartikelstrom in Berührung kommen, sondern von dem Bauteil gegenüber dem Holzpartikelstrom abgedeckt werden.According to a further embodiment of the device according to the invention, the first and / or further component is a nozzle bar. Under a nozzle bar is understood in the context of the invention, an elongate member. This component is bar-shaped or sword-shaped (wing-shaped). In this case, the nozzles are preferably arranged along the longitudinal extent of the component at this, in particular at regular intervals from each other. Instead of an elongate component in the form of a beam or sword, it is also conceivable to design the first and / or further component in the form of a plate or in a ring, in which case the nozzles can be arranged in a circle. Regardless of the shape of the component, it is preferred if the nozzles are arranged on the underside of the component and in particular the component has a greater width (meaning the dimension transverse to the direction of the chute) than the nozzles, so that the nozzles themselves not come into contact with the wood particle stream, but are covered by the component against the wood particle stream.

Das Bauteil, beispielsweise der Düsenbalken, ragt dann in seiner jeweiligen Betriebsstellung in den Fallschacht und hat dabei insbesondere denselben Abstand zu beiden gegenüberliegenden Innenwänden des Fallschachtes. Hat das Bauteil eine längliche Form, ist also seine Längserstreckung größer als seine Breite und Höhe, verläuft das Bauteil vorzugsweise parallel zu zwei gegenüberliegenden Innenwänden des Fallschachtes.The component, such as the nozzle beam, then projects in its respective operating position in the chute and in particular has the same distance to both opposite inner walls of the chute. If the component has an elongated shape, ie if its longitudinal extension is greater than its width and height, the component preferably runs parallel to two opposite inner walls of the chute.

Gemäß noch einer Ausgestaltung der erfindungsgemäßen Vorrichtung ist/sind wie gesagt eine oder mehrere der Düsen, insbesondere die Mehrzahl der Düsen, vorzugsweise jede Düse, des ersten und/oder weiteren Bauteils an der in die Verlaufsrichtung weisenden Unterseite des Bauteils angeordnet. Auf diese Weise sind die Düsen ideal vor dem Kontakt mit dem Holzpartikelstrom geschützt. Der Holzpartikelstrom, der insbesondere auch ein Partikelvorhang sein kann, wird dadurch auf einfache Weise von innen heraus mit dem Medium, beispielsweise dem Bindemittel, besprüht.According to yet another embodiment of the device according to the invention, one or more of the nozzles is / are, as stated, in particular, the plurality of nozzles, preferably each nozzle, of the first and / or further component arranged on the pointing in the direction of the underside of the component. In this way, the nozzles are ideally protected from contact with the wood particle stream. The stream of wood particles, which in particular can also be a particle curtain, is thereby sprayed in a simple manner from the inside out with the medium, for example the binder.

Die zuvor für das erste Bauteil erwähnten Winkelbereiche zwischen Sprührichtung und Verlaufsrichtung treffen insbesondere auch auf das weitere Bauteil zu, welches wie gesagt bevorzugt baugleich mit dem ersten Bauteil ist. So kann also auch vorgesehen sein, dass eine oder mehrere der Düsen, insbesondere die Mehrzahl der Düsen, vorzugsweise jede Düse, des weiteren Bauteils eine Sprührichtung aufweist, die in einem Winkel von höchstens 60°, bevorzugt höchstens 30°, besonders bevorzugt höchstens 15°, bezogen auf die Verlaufsrichtung des Fallschachtes verläuft. Insbesondere ist auch hier ein paralleler Verlauf von Sprührichtung und Verlaufsrichtung vorteilhaft.The angle ranges mentioned above for the first component between spraying direction and course direction apply in particular also to the further component, which, as stated, is preferably identical in construction to the first component. Thus, it can also be provided that one or more of the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the further component has a spray direction which is at an angle of at most 60 °, preferably at most 30 °, more preferably at most 15 ° , runs with respect to the course direction of the chute. In particular, a parallel course of spraying direction and course direction is also advantageous here.

Gemäß wiederum einer weiteren Ausgestaltung der erfindungsgemäßen Vorrichtung hat das erste und/oder weitere Bauteil einen sich in Verlaufsrichtung des Fallschachtes abschnittsweise verbreiternden Querschnitt. Es ist auch denkbar, dass das erste und/oder weitere Bauteil einen sich in Verlaufsrichtung des Fallschachtes zunächst verbreiternden und anschließend verjüngenden Querschnitt hat, also ein Flügelprofil bildet, wobei der Querschnitt insbesondere gewählt ist aus der Gruppe umfassend einen elliptischen, einen eiförmigen, einen augenförmigen und einen tropfenförmigen Querschnitt. Diese Querschnitte haben gemein, dass sie sich unter Vermeidung von Kanten allmählich verbreitern bzw. verjüngen, was eine Anpackung von Holzpartikeln am Bauteil verhindert. Bei einem eiförmigen oder tropfenförmigen Querschnitt ist dabei der breitere Teil des Bauteils der Fallrichtung des Holzpartikelstroms, das heißt der Verlaufsrichtung des Fallschachtes, entgegen gerichtet. Die zuvor beschriebenen Querschnittsformen sind insbesondere dann von Vorteil, wenn das Bauteil, beispielsweise der Düsenbalken, im Holzpartikelstrom angeordnet ist und diesen im Wesentlichen in der Mitte teilt. Die einzelnen Holzpartikel werden durch ein solches Profil auch nicht nennenswert in Richtung der Innenwände des Fallschachtes abgelenkt.According to yet another embodiment of the device according to the invention, the first and / or further component has a cross-section widening in sections in the direction of the chute. It is also conceivable that the first and / or further component has a cross-section widening and then tapering in the direction of the chute, thus forming a sash profile, the cross-section being selected in particular from the group comprising an elliptical, an egg-shaped, an eye-shaped and one drop-shaped cross-section. These cross-sections have in common that they gradually widen or taper while avoiding edges, which prevents an attachment of wood particles on the component. In the case of an egg-shaped or drop-shaped cross section, the wider part of the component is directed counter to the direction of fall of the particle stream of wood, that is to say the course direction of the chute. The cross-sectional shapes described above are particularly advantageous if the component, for example the nozzle bar, is arranged in the wood particle stream and divides it substantially in the middle. The individual wood particles are not deflected by such a profile appreciably in the direction of the inner walls of the chute.

Gemäß noch einer Ausgestaltung der erfindungsgemäßen Vorrichtung ist, was bereits zuvor erwähnt wurde, das erste Bauteil beweglich gelagert und insbesondere zumindest abschnittsweise aus dem Fallschacht verfahrbar. Die Position außerhalb des Fallschachtes entspricht dabei der erwähnten Wartungsstellung. Im Falle eines länglichen Bauteils, also insbesondere eines Düsenbalkens bzw. -schwerts, ist dieses vorzugsweise längs verschiebbar. Dabei ist es denkbar, dass in dem Fall, dass ein weiteres Bauteil vorgesehen ist, das erste Bauteil und das weitere Bauteil längs hintereinander angeordnet sind und insbesondere miteinander verbunden sind. Auf diese Weise läßt sich eine Konstruktion schaffen, bei der das weitere Bauteil ins Innere des Fallschachtes bewegbar ist, wenn das erste Bauteil aus dem Fallschacht verfahren wird. Dies erleichtert einerseits die Wartung und verhindert andererseits einen relativ langen Stillstand der besagten Benetzungsvorrichtung. Bei Verwendung eines den Düsen nachgeschalteten Puffers, der auch durch eine Mischschnecke oder -trommel realisiert sein kann, braucht eine der Benetzungsvorrichtung nachgeschaltete Presseinrichtung zum Verpressen der benetzten Holzpartikel nicht angehalten werden.According to yet another embodiment of the device according to the invention, as already mentioned above, the first component is movably mounted and in particular at least partially movable out of the chute. The position outside of the chute corresponds to the mentioned maintenance position. In the case of an elongated component, that is, in particular a nozzle bar or blade, this is preferably longitudinally displaceable. It is conceivable that in the event that a further component is provided, the first component and the further component are arranged longitudinally behind one another and in particular are connected to one another. In this way, a construction can be created in which the further component is movable into the interior of the chute when the first component is moved out of the chute. On the one hand, this facilitates maintenance and, on the other hand, prevents a relatively long standstill of said wetting device. When using a nozzle downstream buffer, which may also be realized by a mixing screw or drum, a pressing device downstream of the wetting device for pressing the wetted wood particles need not be stopped.

Gemäß wieder einer weiteren Ausgestaltung der erfindungsgemäßen Vorrichtung ist/sind eine oder mehrere der Düsen, insbesondere die Mehrzahl der Düsen, vorzugsweise jede Düse, des ersten und/oder weiteren Bauteils aktivierbar und deaktivierbar. So ist es einerseits möglich, dass die Düsen des jeweiligen Bauteils, welches sich gerade in der Wartungsstellung befindet, deaktiviert sind, wohingegen die Düsen des in seiner Betriebsstellung befindlichen Bauteils aktiviert sind. Grundsätzlich können aber auch eine oder mehrere Düsen ein und desselben Bauteils individuell aktiviert oder deaktiviert werden, um beispielsweise die Menge an austretendem Medium den Eigenschaften des Holzpartikelstroms, beispielsweise dem Material, der Partikelgröße, der Dichte des Holzpartikelstroms etc., anzupassen. Zu letzterem Zweck kann/können auch eine oder mehrere der Düsen, insbesondere die Mehrzahl der Düsen, vorzugsweise jede Düse, des ersten und/oder weiteren Bauteils schwenkbar sein.According to yet another embodiment of the device according to the invention, one or more of the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the first and / or further component is / are activatable and deactivatable. Thus, it is possible on the one hand, that the nozzles of the respective component, which is currently in the maintenance position, are deactivated, whereas the nozzles of the component in its operating position are activated. In principle, however, one or more nozzles of one and the same component can be activated or deactivated individually in order, for example, to adapt the amount of escaping medium to the properties of the wood particle stream, for example the material, the particle size, the density of the wood particle stream, etc. For the latter purpose, one or more of the nozzles, in particular the plurality of nozzles, preferably each nozzle, of the first and / or further component can also be pivotable.

Wie zuvor definiert wurde, ist die mindestens eine Düse über eine Versorgungsleitung mit dem Reservoir verbunden. Dabei ist vorzugsweise mindestens eine Pumpe zwischen dem Reservoir und der bzw. den Düsen angeordnet, die das Medium durch die Versorgungsleitung pumpt oder saugt, das heißt, das Medium wird über die Pumpe druckbeaufschlagt.As previously defined, the at least one nozzle is connected to the reservoir via a supply line. In this case, preferably at least one pump between the reservoir and the nozzle or nozzles is arranged, which pumps or sucks the medium through the supply line, that is, the medium is pressurized by the pump.

Gemäß noch einer Ausgestaltung der erfindungsgemäßen Vorrichtung sind mehrere Versorgungsleitungen vorgesehen, die die Düsen mit dem Reservoir verbinden, wobei jede Versorgungsleitung mindestens eine der Düsen speist. Dabei kann jede Versorgungsleitung mit einer eigenen Pumpe verbunden sein, mit der das Medium durch die Versorgungsleitung gepumpt bzw. gesaugt werden kann. Durch Verschließen einer von mehreren Versorgungsleitungen und/oder durch Anhalten einer Pumpe können damit auch automatisch die mit dieser Versorgungsleitung verbundenen Düsen deaktiviert werden. Bei Freigabe der Versorgungsleitung werden die Düsen dann aktiviert. Dadurch läßt sich die Menge des Mediums, mit welchem die Holzpartikel benetzt werden sollen, bevorzugt automatisch, steuern. Grundsätzlich ist es auf diese Weise auch denkbar, ein weiteres Medium, beispielsweise ein Additiv oder eine Emulsion, zuzuführen. Auch zu Reinigungszwecken können zusätzliche Versorgungsleitungen verwendet werden. Grundsätzlich können auch eine oder mehrere der Versorgungsleitungen mit einem weiteren Reservoir für entsprechend andere Medien, wie Additive, Emulsionen oder Reinigungsflüssigkeiten, verbunden sein.According to yet another embodiment of the device according to the invention, several supply lines are provided which connect the nozzles to the reservoir, each supply line feeding at least one of the nozzles. Each supply line can be connected to its own pump, with which the medium can be pumped or sucked through the supply line. By closing one of several supply lines and / or by stopping a pump, the nozzles connected to this supply line can thus also be deactivated automatically. When the supply line is released, the nozzles are then activated. As a result, the amount of medium with which the wood particles are to be wetted, preferably automatically control. In principle, it is also conceivable in this way to supply a further medium, for example an additive or an emulsion. Also for cleaning purposes additional supply lines can be used. In principle, one or more of the supply lines can also be connected to a further reservoir for correspondingly different media, such as additives, emulsions or cleaning fluids.

Gemäß einer weiteren Ausgestaltung der erfindungsgemäßen Vorrichtung verläuft die mindestens eine Versorgungsleitung, und verlaufen bevorzugt alle Versorgungsleitungen, durch das Innere des ersten und/oder weiteren Bauteils. Auf diese Weise sind einerseits die Versorgungsleitungen besonders gut geschützt. Andererseits wird das Risiko von Anpackungen von Holzpartikeln weiter reduziert.According to a further embodiment of the device according to the invention, the at least one supply line runs, and preferably all supply lines extend through the interior of the first and / or further component. In this way, on the one hand the supply lines are particularly well protected. On the other hand, the risk of packaging of wood particles is further reduced.

Schließlich ist gemäß noch einer weiteren Ausgestaltung der erfindungsgemäßen Vorrichtung, und zwar in der Verlaufsrichtung vor, neben und/oder hinter der mindestens einen Düse, mindestens eine Leitvorrichtung, insbesondere mindestens ein Leitblech und/oder eine Luftdüse (eine mit einem Luftreservoir verbundene bzw. eine Luft ausblasende Düse), angeordnet, das/die insbesondere derart konfiguriert ist, dass der Holzpartikelstrom dadurch umgelenkt und/oder umgeformt wird. Die Luftdüsen sind nicht mit dem Reservoir für das Medium, mit dem die Holzpartikel des Holzpartikelstroms benetzt werden, verbunden. Die Leitvorrichtung ist bevorzugt in oder an mindestens einer der Innenwände des Fallschachtes angeordnet.. Durch eine solche Leitvorrichtung wird der Holzpartikelstrom optimal zu den Düsen ausgerichtet und erhält die optimale Form, insbesondere die eines Partikelvorhangs, das heißt eines zu seiner relativ geringen Dicke vergleichsweise breiten Partikelstroms.Finally, according to yet another embodiment of the device according to the invention, in the Running direction before, next to and / or behind the at least one nozzle, at least one guide device, in particular at least one baffle and / or an air nozzle (a connected to an air reservoir or an air-blowing nozzle), arranged / in particular configured such that the wood particle stream is thereby deflected and / or reshaped. The air jets are not connected to the reservoir for the medium with which the wood particles of the wood particle stream are wetted. The guide device is preferably arranged in or on at least one of the inner walls of the chute. By such a guide the wood particle stream is optimally aligned with the nozzles and receives the optimum shape, in particular that of a particle curtain, that is a comparatively wide particle flow to its relatively small thickness ,

Die Aufgabe wird ferner gemäß einer zweiten Lehre der vorliegenden Erfindung gelöst durch ein Verfahren zur Benetzung von Holzpartikeln mit einem Medium, insbesondere unter Verwendung einer Vorrichtung, wie sie zuvor beschrieben wurde, bei dem die folgenden Schritte durchgeführt werden:

  • Erzeugen eines Holzpartikelstroms in einem Fallschacht, wobei die Holzpartikel in dem Fallschacht insbesondere frei fallen, das heißt nicht mit einer zusätzlichen Luftströmung beaufschlagt werden,
  • Sprühen des Mediums auf die Holzpartikel des Holzpartikelstroms, wodurch die Holzpartikel benetzt werden, wobei das Medium von einem Ort, gemeint ist eine Stelle im Fallschacht, versprüht wird, der von jeder Innenwand des Fallschachtes beabstandet ist. Das Sprühen erfolgt dabei über die Düsen.
The object is further achieved according to a second teaching of the present invention by a method for wetting wood particles with a medium, in particular using a device as described above, in which the following steps are carried out:
  • Generating a stream of wood particles in a chute, wherein the wood particles fall freely in the chute in particular, that is not subjected to an additional air flow,
  • Spraying the medium onto the wood particles of the wood particle stream, thereby wetting the wood particles, the medium being sprayed from a location, meaning a location in the chute, spaced from each inner wall of the chute. The spraying takes place via the nozzles.

Gemäß einer Ausgestaltung des erfindungsgemäßen Verfahrens wird das Medium in eine Sprührichtung versprüht, die in einem Winkel von höchstens 60°, bevorzugt höchstens 30°, besonders bevorzugt höchstens 15°, bezogen auf die Verlaufsrichtung des Fallschachtes verläuft. Insbesondere sind Sprührichtung und Verlaufsrichtung parallel.According to one embodiment of the method according to the invention, the medium is sprayed in a spray direction, which extends at an angle of at most 60 °, preferably at most 30 °, more preferably at most 15 °, based on the direction of the chute. In particular, spraying direction and course direction are parallel.

Gemäß noch einer Ausgestaltung des erfindungsgemäßen Verfahrens wird die Menge, die Sprührichtung und/oder der Sprühwinkel des versprühten Mediums abhängig von Eigenschaften des Holzpartikelstroms, insbesondere abhängig von Material, Partikelgröße und/oder Dichte des Partikelstroms, eingestellt. Die Einstellung erfolgt insbesondere automatisch. Zu diesem Zweck kann die zuvor beschriebene Vorrichtung eine Steuereinrichtung aufweisen.According to yet another embodiment of the method according to the invention, the amount, the spraying direction and / or the spraying angle of the sprayed medium are set as a function of the properties of the wood particle stream, in particular depending on the material, particle size and / or density of the particle stream. The adjustment takes place in particular automatically. For this purpose, the device described above may have a control device.

Es gibt nun eine Vielzahl von Möglichkeiten, die erfindungsgemäße Vorrichtung und das erfindungsgemäße Verfahren auszugestalten und weiterzubilden. Hierzu sei einerseits verwiesen auf die dem Patentanspruch 1 nachgeordneten Patentansprüche, andererseits auf die Beschreibung von Ausführungsbeispielen in Verbindung mit der Zeichnung. In der Zeichnung zeigt:

Fig. 1
eine schematische Seitenansicht einer Vorrichtung zur Benetzung von Holzpartikeln,
Fig. 2
ein Bauteil zur Verwendung in der Vorrichtung von Fig. 1,
Fig. 3a) bis d)
verschiedene Querschnittsformen eines Bauteils gemäß Fig. 2,
Fig. 4
eine weitere Seitenansicht der Vorrichtung aus Fig. 1 und
Fig. 5
eine schematische Darstellung von Sprührichtung und Sprühwinkel des Bauteils aus Fig. 2.
There are now a variety of ways to design and further develop the device and method of the invention. For this purpose, reference is made, on the one hand, to the claims subordinate to patent claim 1, and, on the other hand, to the description of exemplary embodiments in conjunction with the drawing. In the drawing shows:
Fig. 1
a schematic side view of an apparatus for wetting wood particles,
Fig. 2
a component for use in the device of Fig. 1 .
Fig. 3a) to d)
different cross-sectional shapes of a component according to Fig. 2 .
Fig. 4
another side view of the device Fig. 1 and
Fig. 5
a schematic representation of spray direction and spray angle of the component Fig. 2 ,

Fig. 1 zeigt eine Vorrichtung 1 zur Benetzung von Holzpartikeln 2 mit einem Medium 3. Bei den Holzpartikeln 2 handelt es sich um Strands für die OSB-Plattenherstellung. Bei dem Medium 3 handelt es sich um ein flüssiges Bindemittel. Fig. 1 shows a device 1 for wetting wood particles 2 with a medium 3. The wood particles 2 are strands for the OSB plate production. The medium 3 is a liquid binder.

Die Vorrichtung 1 weist einen Fallschacht 4 auf, der zwei gegenüberliegende Innenwände 4.1 hat und in einer Verlaufsrichtung X, die der Richtung des Holzpartikelstroms 2.1 bzw. der Fallrichtung der Holzpartikel entspricht, einen freien Fall der Holzpartikel 2 erlaubt. In der in Fig. 1 dargestellten Ansicht sind die Holzpartikel 2 in einem Behälter 11 gesammelt, der vertikal oberhalb des Fallschachtes 4 angeordnet ist und von dem die einzelnen Holzpartikel 2 in den Fallschacht gelangen.The device 1 has a chute 4, which has two opposite inner walls 4.1 and in a direction X, which corresponds to the direction of the wood particle stream 2.1 or the falling direction of the wood particles, a free fall of the wood particles 2 allowed. In the in Fig. 1 As shown, the wood particles 2 are collected in a container 11, which is arranged vertically above the chute 4 and from which the individual wood particles 2 enter the chute.

Zwei einander gegenüberliegende Besenwalzen 12 formen den Holzpartikelstrom 2.1 zu einem vorhangförmigen Holzpartikelstrom, auch Partikelvorhang genannt, welcher im weiteren Verlauf des Fallschachtes 4 wie folgt mit dem Medium 3, hier dem Bindemittel, bedüst wird.Two opposing broom rollers 12 form the wood particle stream 2.1 to a curtain-shaped wood particle stream, also called particle curtain, which in the further course of the chute 4 as follows with the medium 3, here the binder is sprayed.

So weist die Vorrichtung 1 eine Mehrzahl von Düsen 5 auf, wobei die Düsen 5 über Versorgungsleitungen 6, die mit einer Pumpe 6.1 versehen sind, mit einem Reservoir 7 für das Medium 3 verbunden sind. Die Düsen 5 sind an einem ersten Bauteil 8.1 in Form eines Düsenbalkens 9 angeordnet, der in einer Betriebsstellung, die in den Figuren 1 und 4 dargestellt ist, ins Innere des Fallschachtes 4 ragt. Wie die Ansicht in Fig. 1 zeigt, ist das balken- bzw. schwertförmige Bauteil 8.1 so angeordnet, dass in der Betriebsstellung sämtliche Düsen 5 dieses Bauteils von den Innenwänden 4.1 des Fallschachtes 4 beabstandet sind. Der Fallschacht 4 ist ansonsten, das heißt mit Ausnahme des Bauteils 8.1, frei von anderen Bauteilen mit Düsen und auch frei von anderen Düsen, das heißt es sind keine Düsen in den Innenwänden bzw. an den Innenwänden 4.1 des Fallschachtes angeordnet.Thus, the device 1 has a plurality of nozzles 5, wherein the nozzles 5 are connected via supply lines 6, which are provided with a pump 6.1, with a reservoir 7 for the medium 3. The nozzles 5 are arranged on a first component 8.1 in the form of a nozzle bar 9, which in an operating position, in the FIGS. 1 and 4 is shown, projects into the interior of the chute 4. Like the view in Fig. 1 shows, the beam- or sword-shaped component 8.1 is arranged so that in the operating position, all nozzles 5 of this component are spaced from the inner walls 4.1 of the chute 4. The chute 4 is otherwise, that is, with the exception of the component 8.1, free of other components with nozzles and also free of other nozzles, that is, there are no nozzles arranged in the inner walls or on the inner walls 4.1 of the chute.

Der hinter den Besenwalzen 12 vorhangförmige Holzpartikelstrom 2.1 läuft in vertikaler Richtung X am Düsenbalken 9 vorbei, wobei sich der Holzpartikelstrom 2.1 durch die Form des Düsenbalkens 9 teilt und dadurch von den Düsen 5; die an der Unterseite 8a des Düsenbalkens 9 angeordnet sind, von innen heraus bedüst wird. Auf diese Weise werden die Holzpartikel 2 bereits zumindest teilweise mit dem Medium 3 benetzt.The behind the broom rollers 12 curtain-shaped wood particle stream 2.1 passes in the vertical direction X on the nozzle bar 9 over, with the wood particle stream 2.1 divides by the shape of the nozzle beam 9 and thereby from the nozzles 5; which are arranged on the underside 8a of the nozzle bar 9, is showered from the inside out. In this way, the wood particles 2 are already wetted at least partially with the medium 3.

Am unteren Ende des Fallschachtes 4 befindet sich im vorliegenden Fall eine Mischtrommel bzw. -schnecke 11, die durch Rotation zu einer Durchmischung von Holzpartikeln 2 und Medium 3 führt und auch als Puffer dient. Von dieser Mischtrommel 11 gelangt der durchmischte Holzpartikelstrom dann zur weiteren Fertigung, die hier nicht mehr dargestellt ist. Die weitere Fertigung kann beispielsweise eine Presseinrichtung zum Herstellen einer OSB-Platte sein.At the lower end of the chute 4 is in the present case, a mixing drum or screw 11, which leads by rotation to a mixing of wood particles 2 and medium 3 and also serves as a buffer. From this mixing drum 11 of the mixed wood particle stream then passes to further production, which is not shown here is. The further production can be, for example, a pressing device for producing an OSB board.

Fig. 4 zeigt eine gegenüber Fig. 1 um 90° gedrehte Seitenansicht. Hier ist zu erkennen, dass zusätzlich zu dem ersten schwertförmigen Bauteil 8.1 ein baugleiches weiteres Bauteil 8.2 vorgesehen ist. Wie durch einen Pfeil dargestellt ist, kann das erste Bauteil 8.1 und das damit verbundene zweite Bauteil 8.2 parallel zu den Innenwänden 4.1 des Fallschachtes 4 verfahren werden, und zwar jeweils von einer Betriebsstellung in eine Wartungsstellung. In Fig. 4 ist das Bauteil 8.1 in seiner Betriebsstellung und kann nach links in eine gestrichelt dargestellte Wartungsstellung gefahren werden. Gleichzeitig wird das Bauteil 8.2 aus der in Fig. 4 dargestellten Wartungsstellung nach links in seine Betriebsstellung gefahren und ersetzt dadurch das Bauteil 8.1. Fig. 4 shows one opposite Fig. 1 90 ° rotated side view. Here it can be seen that in addition to the first sword-shaped component 8.1, a structurally identical further component 8.2 is provided. As shown by an arrow, the first component 8.1 and the associated second component 8.2 can be moved parallel to the inner walls 4.1 of the chute 4, in each case from an operating position to a maintenance position. In Fig. 4 is the component 8.1 in its operating position and can be moved to the left in a maintenance position shown in dashed lines. At the same time, the component 8.2 from the in Fig. 4 shown maintenance position moved to the left in its operating position and thereby replaced the component 8.1.

Wie Fig. 4 ferner zeigt, sind mehrere Versorgungsleitungen 6 vorgesehen, die sämtliche Düsen 5 beider Bauteile 8.1 und 8.2 mit dem Reservoir 7 verbinden. Die Versorgungsleitungen 6 verlaufen dabei durch das Innere der Bauteile 8.1 und 8.2. Letzteres ist auch in Fig. 2 dargestellt, wobei hier auch erkennbar ist, dass jede Versorgungsleitung 6 mit anderen Düsen 5 verbunden ist.As Fig. 4 further shows, a plurality of supply lines 6 are provided which connect all the nozzles 5 of both components 8.1 and 8.2 with the reservoir 7. The supply lines 6 run through the interior of the components 8.1 and 8.2. The latter is also in Fig. 2 represented, wherein it is also recognizable that each supply line 6 is connected to other nozzles 5.

Wie gesagt ist das in Fig. 2 dargestellte Bauteil als Düsenbalken 9 ausgebildet. Grundsätzlich kann erfindungsgemäß aber auch anstelle eines solchen länglichen Bauteils ein tellerförmiges oder ringförmiges Bauteil vorgesehen sein.As I said that is in Fig. 2 illustrated component designed as a nozzle bar 9. In principle, however, according to the invention, a plate-shaped or annular component may also be provided instead of such an elongate component.

Fig. 3 zeigt verschiedene Querschnittsformen eines Bauteils, insbesondere eines länglichen Düsenbalkens 9 oder eines ringförmigen Bauteils. Dabei sind die Düsen 5 jeweils an der Unterseite 8a angeordnet. Das jeweilige Bauteil, also hier der Düsenbalken 9, hat dabei einen sich in Verlaufsrichtung X des Fallschachtes 4 zunächst verbreiternden und anschließend verjüngenden Querschnitt und bildet damit ein Flügelprofil. Der Querschnitt des Düsenbalkens 9 in Fig. 3a) ist dabei augenförmig. Der Querschnitt des Düsenbalkens 9 in Fig. 3b) ist elliptisch. Der Querschnitt des Düsenbalkens 9 in Fig. 3c) ist eiförmig und der Querschnitt des Düsenbalkens 9 in Fig. 3d) ist tropfenförmig, wobei bei den beiden letztgenannten Querschnitten der breitere Teil des Profils der Verlaufsrichtung X entgegen weist. In Fig. 3a) bis d) ist ferner zu erkennen, dass die Breite (Dimension quer zur Verlaufsrichtung X) aller gezeigten Alternativen des Bauteils bzw. Düsenbalkens 9 breiter als die der Düsen 5 ist, wodurch die Düsen 5 nicht unmittelbar mit dem Holzpartikelstrom 2.1 in Kontakt kommen können. Fig. 3 shows various cross-sectional shapes of a component, in particular an elongated nozzle bar 9 or an annular member. The nozzles 5 are each arranged on the underside 8a. The respective component, in this case the nozzle bar 9, has a cross-section widening in the direction X of the chute 4 and then tapering and thus forms a sash profile. The cross section of the nozzle bar 9 in Fig. 3a ) is eye-shaped. The cross section of the nozzle bar 9 in Fig. 3b ) is elliptical. The cross section of the nozzle bar 9 in Fig. 3c ) is ovate and the cross section of the nozzle bar 9 in Fig. 3d ) is drop-shaped, wherein in the latter two cross-sections of the wider part of the profile of the direction X is opposite. In Fig. 3a ) to d) can be seen further that the width (dimension transverse to the direction X) of all shown alternatives of the component or nozzle beam 9 is wider than that of the nozzle 5, whereby the nozzles 5 can not come into direct contact with the wood particle stream 2.1 ,

Bei den Ausführungsbeispielen in den Figuren 1 und 3a) bis d) verläuft die Sprührichtung S der Düsen 5 parallel zur Verlaufsrichtung X des Fallschachtes 4. Grundsätzlich können die Düsen 5 aber auch eine Sprührichtung S haben, die winkelig zur Verlaufsrichtung X verläuft, wie dies in Fig. 5 dargestellt ist. Dadurch verläuft die Sprührichtung S beispielsweise in einem Winkel α von höchstens 60°, bevorzugt höchstens 30°, besonders bevorzugt höchstens 15°, bezogen auf die Verlaufsrichtung X des Fallschachtes 4. Der Sprühwinkel β der Düsen 5 kann dabei höchstens 45°, bevorzugt höchstens 30°, besonders bevorzugt höchstens 15°, betragen.In the embodiments in the FIGS. 1 and 3a ) to d), the spray direction S of the nozzle 5 is parallel to the direction X of the chute 4. In principle, the nozzles 5 but also have a spray direction S, which is at an angle to the direction X, as shown in Fig. 5 is shown. As a result, the spray direction S extends, for example, at an angle α of at most 60 °, preferably at most 30 °, particularly preferably at most 15 °, relative to the direction X of the chute 4. The spray angle β of the nozzles 5 can be at most 45 °, preferably at most 30 °, more preferably at most 15 °.

Bei dem in den Figuren 1 bis 5 dargestellten erfindungsgemäßen Verfahren wird zunächst ein Holzpartikelstrom 2.1 in einem Fallschacht 4 erzeugt, wobei die Holzpartikel 2 in dem Fallschacht 4 frei fallen. Der Holzpartikelstrom 2.1 wird durch Besenwalzen 12 zu einem Vorhang geformt, der auf ein düsenbalkenförmiges Bauteil 8.1 gerichtet ist, an dessen Unterseite 8a mehrere Düsen 5 angeordnet sind, die ein Bindemittel als Medium 3 auf die Holzpartikel 2 von einem Ort versprühen, der von jeder Seitenwand 4.1 des Fallschachtes beabstandet ist. Dabei kann über eine Steuereinrichtung 13 eine insbesondere automatische Einstellung der Menge, der Sprührichtung S und des Sprühwinkels β des versprühten Mediums 3 abhängig von Eigenschaften des Holzpartikelstroms 2.1 erfolgen. Solche Eigenschaften können das Material, die Partikelgröße, die Dichte etc. des Holzpartikelstroms 2.1 sein.In the in the FIGS. 1 to 5 illustrated inventive method, a wood particle stream 2.1 is first generated in a chute 4, wherein the wood particles 2 fall freely in the chute 4. The wood particle stream 2.1 is formed by broom rollers 12 into a curtain which is directed to a nozzle beam-shaped component 8.1, on the underside 8a a plurality of nozzles 5 are arranged, which spray a binder as a medium 3 on the wood particles 2 from a location of each side wall 4.1 of the chute is spaced. In this case, a particular automatic adjustment of the amount, the spray direction S and the spray angle β of the sprayed medium 3 depending on properties of the wood particle stream 2.1 via a control device 13. Such properties may be the material, particle size, density, etc. of the wood particle stream 2.1.

Claims (15)

  1. A device (1) for wetting wood particles (2) with a medium (3) containing:
    - a drop shaft (4) that exhibits at least one inner wall (4.1) and allows the wood particles (2) to fall freely in a running direction (X), and
    - at least one nozzle (5), wherein the at least one nozzle (5) is connected by a supply line (6) with a reservoir (7) for the medium (3),
    wherein the device (1) exhibits a first component (8.1) projecting into the interior of the drop shaft (4) in an operating position, characterized in that the first component (8.1) is a nozzle bar (9), wherein several nozzles (5) are arranged on the first component (8.1), and wherein all nozzles (5) arranged on the first component (8.1) are spaced apart from each inner wall (4.1) of the drop shaft (4) in the operating position.
  2. The device (1) according to claim 1, characterized in that another component (8.2) is provided in addition to the first component (8.1), in particular a component (8.2) structurally identical to the first component (8.1), that can be moved into the interior of the drop shaft (4) in the operating position and on which is situated at least one nozzle (5), which is spaced apart from each inner wall (4.1) of the drop shaft (4) when the respective additional component (8.2) is in its operating position.
  3. The device (1) according to claim 1 or 2, characterized in that the distance between each inner wall (4.1) and each nozzle (5) measures at least 10 %, preferably at least 20 %, especially preferably at least 30 %, of the distance between the respectively opposing inner walls (4.1) of the drop shaft (4).
  4. The device (1) according to claim 2 or 3, characterized in that the additional component (8.2) is a nozzle bar (9).
  5. The device (1) according to one of the preceding claims, characterized in that one or more of the nozzles (5), in particular the majority of the nozzles (5), preferably each nozzle (5), of the first and/or additional component (8.1, 8.2) is/are situated on the lower side (8a) of the component (8.1, 8.2) pointing in the running direction (X).
  6. The device (1) according to one of the preceding claims, characterized in that one or more of the nozzles (5), in particular the majority of the nozzles (5), preferably each nozzle (5), of the first and/or additional component (8.1, 8.2) exhibit(s) a spraying direction (S) that runs at an angle (α) of at most 60°, preferably of at most 30°, especially preferably of at most 15°, relative to the running direction (X) of the drop shaft (4).
  7. The device (1) according to one of the preceding claims, characterized in that the first and/or additional component (8.1, 8.2) has a cross section that expands sectionally in the running direction (X) of the drop shaft (4) and/or a cross section that first expands and then tapers in the running direction (X), wherein the cross section is selected in particular from the group comprising an elliptical, egg-shaped, oculiform, and drop-shaped cross section.
  8. The device (1) according to one of the preceding claims, characterized in that the first component (8.1) is movably mounted, and in particular can be moved at least sectionally out of the drop shaft (4).
  9. The device (1) according to one of claims 2 to 8, characterized in that the additional component (8.2) can be moved into the drop shaft (4) when the first component (8.1) is moved out of the drop shaft (4).
  10. The device (1) according to one of the preceding claims, characterized in that one or more of the nozzles (5), in particular the majority of the nozzles (5), preferably each nozzle (5), of the first and/or additional component (8.1, 8.2) can be activated and deactivated and/or pivoted.
  11. The device (1) according to one of the preceding claims, characterized in that several supply lines (6) are provided, which connect the nozzles (5) with the reservoir (7), wherein each supply line (6) feeds at least one of the nozzles (5).
  12. The device (1) according to one of the preceding claims, characterized in that the at least one supply line (6) runs through the interior of the first and/or additional component (8.1, 8.2).
  13. A method for wetting wood particles (2) with a medium (3), in particular using a device according to one of the preceding claims, in which the following steps are performed:
    - generating a wood particle stream (2.1) in a drop shaft (4), and
    - spraying the medium (3) onto the wood particles (2) of the wood particle stream (2.1),
    wherein the medium (3) is sprayed from a location (10) spaced apart from each inner wall (4.1) of the drop shaft (4), characterized in that the wood particle stream (2.1) passes by a nozzle bar (9) in the vertical direction (X), wherein the wood particle stream (2.1) is divided by the shape of the nozzle bar (9), and thereby becomes sprayed from the inside out by several nozzles (5) of the nozzle bar (9).
  14. The method according to claim 13, characterized in that the medium (3) is sprayed in a spraying direction (S) that runs at an angle (α) of at most 60°, preferably of at most 30°, especially preferably of at most 15°, relative to the running direction (X) of the drop shaft (4).
  15. The method according to claim 13 or 14, characterized in that the quantity, the spraying direction (S) and/or the spraying angle (β) are set as a function of the properties of the wood particle stream (2.1).
EP12716433.3A 2011-06-07 2012-04-25 Device and method for wetting wood particles Active EP2718069B1 (en)

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Application Number Priority Date Filing Date Title
PL12716433T PL2718069T3 (en) 2011-06-07 2012-04-25 Device and method for wetting wood particles

Applications Claiming Priority (2)

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DE102011106211.8A DE102011106211B4 (en) 2011-06-07 2011-06-07 DEVICE AND METHOD FOR FILLING WOOD PARTICLES
PCT/EP2012/057516 WO2012167991A1 (en) 2011-06-07 2012-04-25 Device and method for wetting wood particles

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EP2718069A1 EP2718069A1 (en) 2014-04-16
EP2718069B1 true EP2718069B1 (en) 2015-08-05

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DE (1) DE102011106211B4 (en)
ES (1) ES2546522T3 (en)
HU (1) HUE025672T2 (en)
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PT (1) PT2718069E (en)
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DE102015212798B4 (en) * 2015-07-08 2017-02-02 Brav-O-Tech Gmbh Apparatus and method for wetting particles

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU408812A1 (en) * 1972-03-13 1973-11-30 А. Ф. Авдонькин Белорусский технологический институт С. М. Кирова DEVICE FOR MIXING LOOSE MATERIALS WITH LIQUIDS
FR2228604A1 (en) * 1973-05-11 1974-12-06 Cifal Applying resin coating to fibres or particles - by turbulent impact with a high velocity spray
CH597926A5 (en) * 1976-11-26 1978-04-14 Fahrni Peter
CH623241A5 (en) * 1977-09-10 1981-05-29 Fahrni Peter Apparatus for forming a rotationally symmetrical curtain of falling particles
CH628521A5 (en) * 1978-05-20 1982-03-15 Kaiser Wirz Max METHOD AND DEVICE FOR ADMINISTERING LIQUID COMPONENTS IN SCHUETTABLE GOETER.
SU1021629A1 (en) * 1981-12-29 1983-06-07 Всесоюзный Научно-Исследовательский Институт Деревообрабатывающей Промышленности Apparatus for gumming wooden fibres
SU1638011A1 (en) * 1989-03-23 1991-03-30 Всесоюзный Научно-Исследовательский Институт Деревообрабатывающей Промышленности Mixer
IT1282399B1 (en) * 1996-05-02 1998-03-20 Cmp Spa GLUING UNIT FOR WOOD-BASED PANEL PRODUCTION PLANTS, AS WELL AS THE PLANT USING THIS GLUING UNIT
ITMO20030104A1 (en) * 2003-04-15 2004-10-16 Imal Srl METHOD AND PLANT FOR ADDING GLUE TO A FLOW
DE20317633U1 (en) * 2003-11-14 2004-02-12 Binos Technologies Gmbh & Co. Kg Dry binding device for making e.g. MDF or HDF board, has binder sprayed against curtain of binder material formed by profiled rolls inside inlet shaft connected to mixer
ITMO20040127A1 (en) * 2004-05-25 2004-08-25 Imal Srl PROCESS OF GLUING FRAGMENTS OR WOOD SHAVINGS FOR OSB AND RELATED BONDING APPARATUS.
DE102006040044B3 (en) * 2006-04-18 2007-06-06 Flakeboard Co. Ltd. Fiber coating method for manufacturing e.g. high density fiber-board, involves transporting fibers from dosing device by transporting device so that fibers come out from outlets in separated partial flows that are merged to fiber flow

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DE102011106211A1 (en) 2012-12-13
PT2718069E (en) 2015-10-09
HUE025672T2 (en) 2016-05-30
EP2718069A1 (en) 2014-04-16
DE102011106211B4 (en) 2014-05-22
RU2557204C1 (en) 2015-07-20
ES2546522T3 (en) 2015-09-24
WO2012167991A1 (en) 2012-12-13
PL2718069T3 (en) 2015-12-31

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