EP0975457B1 - Dispositif pour fractionner et disseminer en particulier des particules fibreuses - Google Patents

Dispositif pour fractionner et disseminer en particulier des particules fibreuses Download PDF

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Publication number
EP0975457B1
EP0975457B1 EP98920525A EP98920525A EP0975457B1 EP 0975457 B1 EP0975457 B1 EP 0975457B1 EP 98920525 A EP98920525 A EP 98920525A EP 98920525 A EP98920525 A EP 98920525A EP 0975457 B1 EP0975457 B1 EP 0975457B1
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EP
European Patent Office
Prior art keywords
particles
accordance
screening apparatus
belt
scraper
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
EP98920525A
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German (de)
English (en)
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EP0975457A1 (fr
Inventor
Ove-Walter Cornils
Hans-Joachim Iredi
Ludwig Twick
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.)
Metso Panelboard GmbH
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Metso Panelboard GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1997116130 external-priority patent/DE19716130C1/de
Priority claimed from DE19814150A external-priority patent/DE19814150A1/de
Application filed by Metso Panelboard GmbH filed Critical Metso Panelboard GmbH
Publication of EP0975457A1 publication Critical patent/EP0975457A1/fr
Application granted granted Critical
Publication of EP0975457B1 publication Critical patent/EP0975457B1/fr
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Classifications

    • 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
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres

Definitions

  • the present invention relates to a device for the fractionation of especially fibrous particles of different sizes, in particular of lignocellulosic and / or cellulosic fibers, chips or the like Particle, with one containing the unfractionated particle Dosing bunker, essentially one downstream of the dosing bunker flat screening device and a feed unit of the dosing hopper, through which the particles from the dosing hopper onto the surface of the screening device are applicable.
  • the invention is based on a device for sprinkling, especially with binders fibrous particles, in particular wood fibers, wood chips or similar particles, with such a device for fractionation directed.
  • the object of the invention is a device of the aforementioned Kind in such a way that on the one hand no clogging of the screening device occurs and on the other hand the throughput with simultaneous improvement the quality of sighting can be improved.
  • the task continues by a device for spreading, in particular with binder staggered, preferably fibrous particles, in particular wood fibers, Wood chips or similar particles, in particular for the production of shaped objects, primarily in the form of plates, with an inventive Fractionation device and one below the screening device arranged conveyor for receiving a the fleece formed particles passing through the screening device.
  • portioning is thus carried out on the screening device applied particles in mutually independent particle quantities, through the transport device according to the invention the surface of the screening device can be transported away.
  • the surface of the screening device can be transported away.
  • the portioning sections each have a grinding element that rests on the surface of the screening device and when moving the portioning sections sanding over the surface of the screening device to be led.
  • a slight pressure to the surface of the screening device abutting grinding element for each or at least one Part of the portioning sections is the cleaning effect that occurs when moving the portioning portions over the surface of the screening device arises, further strengthened.
  • the grinding elements that acting on the particles in a direction perpendicular to the screen surface Force component strengthened, so that an increase in throughput is achieved.
  • the transport device is preferably an in particular endless scraper belt educated. In this way it is a particularly simple and inexpensive Design of the transport device possible. It is Scraper belt advantageously at least over a partial area in one direction perpendicular to the surface of the particle sieve permeable so that the particles from the dosing bunker over its feed unit through the scraper belt onto the screening device can be poured. A complex design of the This eliminates the need for a feed unit.
  • the scraper belt in particular plate-shaped carriers, which preferably at regular intervals on an endless chain or ribbon-shaped Carrier element are provided.
  • the carrier element can each be attached to the center of the drivers.
  • several, in particular two chain or band-shaped carrier elements are provided be, each in the area of the lateral outer edges of the driver are attached. In this way, the stability of an invention trained scratch tape increased.
  • the drivers on the carrier element or on the carrier elements are preferred releasably attached and / or airtight. On this ensures that, on the one hand, the carriers used optimally matched to the screening devices used and secondly worn drivers can be exchanged for new ones.
  • the grinding elements are each formed by a section of the driver.
  • the drivers are at least flexible in its sections forming the grinding elements, for example made of hard rubber. This is an adjustment of the Abrasive elements on the surface of the screening device possible, so that guaranteed even with a certain irregularity in the screen surface is that the grinding elements over their entire width as well as over their entire range of motion on the surface of the screening device with a certain pressure.
  • the Driver at least in their sections forming the grinding elements designed to be abrasion-resistant and in particular have an abrasion-resistant coating, for example a Teflon coating.
  • the grinding elements forming sections of the driver can be both in one piece be formed with the drivers as well as separate components. If the grinding elements are designed as separate components, they are preferred releasably attached to the carriers, so that in the event of a Wear can be exchanged.
  • the Driver at least in their sections forming the grinding elements made of water-repellent, non-stick material. Thereby prevents the particles crosslinked with binder on the carriers stick, which increases the absorption capacity of the portioning could be restricted.
  • the screening device in particular two screening zones with different Sieve openings.
  • the screening zones are along the direction of movement of the movable over the surface of the screening device Portioning sections arranged one behind the other, preferably the sieve openings of the portioning sections in the direction of movement lying sieve zone or sieve zones are larger than that Sieve openings of the sieve zone lying against the direction of movement or sieve zones. This ensures that when painting over the screen surface first the small diameter particles through the sieving device step through while finishing it in the next Pass the next larger particles through the sieve zone.
  • the fractionated Particles can either be different according to the sieve zones Collection devices for the different particle sizes or, for example, to a moving conveyor belt are poured on this way a fleece with particle sizes distributed differently over its thickness can be generated.
  • endless scraper belt over two pulleys, so that a lower Band section directly on the surface of the screening device and a upper band section at a certain distance from the surface of the Screening device, in particular in each case essentially parallel to the surface the screening device runs.
  • a device according to the invention Preferred is at least at one end of the scraper belt, in particular in the area of the deflection rollers, a receiving device for receiving excreted particles provided.
  • an intermediate floor is provided between the upper and the lower band section at least in some areas, the drivers with their the the sections forming the grinding elements at opposite ends rest against the intermediate floor so that these ends when moving the portioning be ground over the intermediate floor.
  • the intermediate floor can from one deflection roller in the direction of movement of the upper one Extend the belt section towards the opposite other deflection roller, being between this other pulley and that of this other Deflection roller facing end of the intermediate floor an area is formed in a direction perpendicular to the surface of the screening device is permeable to the particles.
  • this Area is formed from other screening devices, the relatively large Sieve openings, pre-separation of foreign bodies can occur here or particles with a size larger than the size of these sieve openings lies. Only those that pass through the further screening device Particles fall onto the underlying sieve device, over which they pass be moved away by means of the transport device.
  • two scraper belts arranged one behind the other in the longitudinal direction the scraper belts in particular arranged mirror-symmetrically to one another are.
  • the feed unit of the dosing hopper is advantageous a distribution device, in particular in the form of a pendulum distributor downstream with which the feed unit from the dosing bunker removed particles in particular mutually the two scraper belts are feedable. This configuration makes it possible to start out from a dosing bunker particles to two different scraper belts to distribute.
  • the screening device and / or the additional screening device is preferred in FIG all embodiments as a vibrating screen or as a vibrating shaking screen educated.
  • That which is placed on the screening device Bulk material is further loosened, making it distant, fine and subsequently medium sized particles faster towards the sieve openings and to get through it.
  • Vibrating screen can be moved back and forth via a crank mechanism.
  • the maximum stroke of the vibrating screen between approx. 10 cm and 1 m, preferably between approx. 30 cm and 70 cm, in particular approx. 50 cm.
  • the vibrating screen Through the movement of the vibrating screen, its frequency adjustable the chips lying on the seven are evened out and screened out fractionally according to the sieve openings.
  • the drivers can grind over the surface of the sieves or in one be moved close to it.
  • the maximum Speed of movement of the vibrating screen in the transport direction is greater than the transport speed of the portioning sections, the particles collect at the opposite of the transport direction Sides of the driver when the driver and the vibrating screen in be moved in the same direction. This way the particles pushed and turned against the back of the driver.
  • the vibrating screen moves against the transport direction of the portioning sections and thus against the direction of movement of the drivers, this is how the particles are circulated on the front sides of the drivers.
  • the Portioning sections laterally closed at least in regions educated. This ensures that particles and Particle dust avoided laterally from the portioning sections is so that the area around the device is kept practically dust-free becomes.
  • tab-shaped sealing elements are provided, which in particular are attached to the side faces of the drivers.
  • This overlapping training takes into account the fact that in the formation of the transport device as an endless scraper belt the drivers when rotating the pulleys on their radial outside edges have a greater distance from each other than between the radially inner edges. Because in this case one tight sealing of the lateral areas of the portioning sections is not possible, the seal can be advantageous by overlapping Sealing elements can be achieved. In principle, it is also possible to form the sealing elements flexibly, for example, wherein the flexibility on the one hand through certain material properties and secondly achieved, for example, by a kind of accordion folding can be.
  • a center sealing element in particular designed as a side wall arranged. Is preferred by the center sealing element essentially the entire area between the upper and lower band section laterally sealed.
  • the area between the upper one is defined by the central sealing element and the lower band section sealed from the environment, so that the environment is free of dust through the central sealing element is further improved.
  • the central sealing element with the portioning sections is preferred sealing sealing elements on the side connected and is particularly in the case of moving sealing elements with these in sealing sliding contact. This way the whole lateral area through an essentially continuous, uniform Sealing unit, consisting of the central sealing elements and the sealing elements that laterally close the portioning sections sealed so that the lateral environment of the invention Device is practically dust-free.
  • the upper band section is designed in particular as a wall section upper sealing element provided.
  • a transport device is provided above the portioning sections, with which the particles emerging from the dosing bunker become one predetermined area above the screening device can be transported.
  • the transport device can be preferably endless Conveyor belt be formed.
  • the transport device can additionally or instead of the already Intermediate floor described can be provided because the function that from particles emerging from the dosing hopper to a predetermined range to be transported above the screening device, both through the transport device as well as interacting through the mezzanine met with the upper band section moved above the intermediate floor can be.
  • an inventive device for scattering particles Fractionator can be moved in the longitudinal direction relative to the conveyor belt educated. As a result, it can be used especially when connecting a cycle press for pressing the fleece, the next fleece by moving the fractionation device in relation to the conveyor belt are scattered so that the next fleece already after pressing is completely scattered and fed directly to the cycle press can.
  • middle layer spreading roller heads provided for spreading a middle layer of the fleece are.
  • Fig. 1 shows a dosing hopper 1, in which three scraping rakes 2 are arranged are. That from different sized particles 3, for example bulk material consisting of fibrous shavings and binders Dosing hopper 1 fed from above, as indicated by an arrow 4 is.
  • the particles 3 entered in the dosing hopper 1 fall onto the bottom belt 6 and are indicated there by the back rake 2 in the Equalized arrow directions and along an arrow 9 in the direction of the discharge roller 7 funded.
  • the scraper belt 11 includes an upper band section 12 and a lower band section 13, the lower band section 13 during a rotation of the deflection rollers 9, 9 'is movable in the direction of an arrow 14.
  • the scraper belt 10 consists of a band-shaped carrier element 15, on the plate-shaped driver 16 at regular intervals essentially attached perpendicular to the band-shaped carrier element 15 are. Portioning sections are located between the carriers 16 17 formed in a direction perpendicular to the band-shaped Carrier element 15 are permeable.
  • the vibrating screen is about not shown Means according to a double arrow 20 back and forth and includes two sieve zones 21, 22 with different sieve openings 23, 24, wherein the sieve openings 24 formed in the sieve zone 22 are larger than those in FIG the sieve zone 21 are formed sieve openings 23.
  • the screen zones 21, 22 can be used, for example, as mesh, round-hole or elongated sieves or any other known sieve types.
  • a receiving device 25 designed as a conveyor belt is arranged, whose direction of transport is perpendicular to the plane of the drawing.
  • a conveyor belt 26 is provided below the screening device 19 parallel along its conveying direction indicated by an arrow 30 to the direction of movement of the lower one represented by arrow 14 Band section 13 extends.
  • the fleece 27 formed in this way can on the conveyor belt 26 in Direction of arrow 30 transported to a press device, not shown and in this device in a manner known per se Plate to be pressed. It is also possible and within the scope of the invention advantageous, the device of Figure 1, another device of this Sort in such a mirror-image order that additional large fleece 27 Particles 3 "and then small particles 3 'arrive, making one symmetrical constructed and compressible into a shaped object Fleece receives. Such a device is described with reference to the figure 3 described in more detail below.
  • Fig. 2 According to the detailed view shown in Fig. 2 are on the drivers 16 approaches 31 are formed, via which the driver 16 releasably on the band-shaped carrier element 15 are attached.
  • the drivers 16 are flexible, so that the lower sections 32 of the driver 16, when the lower band section moves 13 drag along the arrow 14 over the surface of the vibrating screen 18, assume the curved shape shown in Fig. 2. Due to the curved shape of the lower portions 32 of the driver 16 acts on those within the portioning sections formed between the carriers 16 17 arranged particles 3 one in the direction of an arrow 33 directed force that a component perpendicular to the surface of the Vibrating sieve 18 has. Because of this power, those within the Portioning sections 17 arranged particles 3 in the direction of Vibrating sieve 18 pressed, whereby the throughput through the vibrating sieve 18 is increased.
  • the pushing movement creates the driver 16 arranged in the portioning portions 17 Portions of the particles 3 a circulating movement indicated by arrows 34, so that distant small particles 3 due to this Circulating movement is conveyed towards the surface of the vibrating screen 18 are and penetrate the vibrating screen 18 through the screen openings 23 can.
  • the scraper belts 35, 36 are essentially identical to that of FIG. 1 described scraper belt 10 and are formed over the deflection rollers 9, 9 'driven in opposite directions, as indicated by arrows 41 to 44 is.
  • the scraper belt 35 includes an upper belt section 45 and one lower band section 46, being on the underside of the upper band section 45 an extending over the entire width of the scraper belt 35
  • Intermediate floor 47 is arranged.
  • the intermediate floor 47 is positioned so that the inner edges of the driver 16 on abut the top of the intermediate floor 47 and with a rotation of the Scraper belt 35 are guided over the intermediate floor 47.
  • the intermediate floor 47 extends from the inside deflection roller 9 to just before the outer pulley 9 ', between the end 48 of the intermediate floor 47 and the outer deflection roller 9 ', an area 49 is formed which is perpendicular in one direction is designed to be permeable to the vibrating sieve 37 for the particles 3.
  • the scraper belt 36 includes upper and lower belt sections 50, 51, on the underside of the upper band section 50 an intermediate floor 52 is provided on which the inner edges the driver 16 abut and over these edges during a rotation the scraper belt 36 are guided grinding.
  • a pendulum distributor 53 is arranged, the two along an arrow 54 around Axes 55 hinged pendulum flaps 56 and a wedge-shaped separating element 57 with two inclined surfaces 59, 60, the tip 58 in the center is directed between the axes 55.
  • Scattered material is obtained by pivoting the pendulum flaps 56 in the same direction alternately on the inclined surfaces 59 and 60 of the wedge-shaped fuel assembly 57 passed, of which the particles 3 of the grit each the scraper belt 35 and 36 are guided.
  • the particles 3 fall on the intermediate floors 47 and 52, being inside the one formed between two adjacent drivers 16 Portioning sections 17 containing a certain amount of particles 3 Portions of the grit are formed. These servings are driven by the moving over the intermediate floors 47, 52 16 promoted in the direction of the outer deflection rollers 9 ', where after exceeding the ends 48, 61 of the intermediate floors 47, 52 through the open areas 49, 62 downward in the direction of the vibrating screens 37, 38 fall.
  • Too large particles 3 "'are each on the inner pulleys 9 deposited on a receiving device 25 and transported away from it.
  • a sieve device 69 is arranged below the lower belt section 51, over the surface of the outside edges of the driver 16 are guided by grinding when the scraper belt 36 rotates.
  • the further screening device 68 has screening openings 70 and the screening device 69 has sieve openings 71, the sieve openings 70 being larger than the sieve openings 71 are formed.
  • the particles 3 hitting the surface of the screening device 69 become by the driver 16 in individual portions over the surface the sieve device 69, wherein particles 3 ', their dimensions are smaller than the size of the screen openings 71 pass through them and can be caught by the receiving device 72.
  • Particles 3 "whose dimensions are below the size of the sieve openings 70, but above the size of the sieve openings 71, are about the end of the screening device 69 is conveyed out and falls into the receiving device 74.
  • the device described thus separates particles different sizes possible.
  • a sieve device 69 also two or more screening devices connected in series be provided with sieve openings of different sizes, in which case a separate one under each of these screening devices Collecting device for collecting the one corresponding to the respective sieve opening Particle is present.
  • the drivers are on the end faces 16 plate-shaped elements 80 are provided, which over the approaches 31st with the band-shaped carrier element 15 designed as a link chain are connected.
  • the sealing elements essentially have one rectangular shape and such a size that the ends of two adjacent sealing elements 80 overlap when the associated drivers 16 are guided over the screening device 19.
  • Both in the upper and in the lower band section 12, 13 are the Portioning sections 17 through the sealing elements 80 laterally essentially completely sealed so that leakage from into the Portioning sections 17 arranged particles or dust reliably is prevented.
  • a center sealing element 84 designed as a side wall is provided, of the only in Fig. 5 due to the partial section shown respective end regions 84 'and 84 "are shown.
  • the center sealing element 84 is abrasive at its upper and lower edges 85, 86 Contact with the radially inner edges of the sealing elements 80, so that over the entire side surface of the scraper belt 10th sealing against leaking particles or dust.
  • the screening device 19 is in the embodiment shown in FIG. 5 from five sieve zones 75 to 79, each different large sieve openings, the size of the sieve openings from the sieve zone 75 increases to the sieving zone 79.
  • a different one Number of different screening zones can be provided, so that the structure and quality of what is produced with the device Control fleece.
  • the movement of the screening device 19 designed as a vibrating screen 18 according to the double arrow 20 in the illustrated embodiment generated by a crank mechanism 88, the rotational speed of which is preferred is adjustable.
  • the crank mechanism 88 comprises a crank rod 89, the End 90 connected to a roller guide 92 via a joint 91 is.
  • the roller guide 92 comprises a stationary, with rollers provided rail 93 on which a roller block 94 is slidably mounted is.
  • the roller block 94 is connected to the screening device 19, so that when the roller block 94 is moved along the rail 93, the vibrating screen 19 is also displaced via the crank mechanism 88 becomes.
  • crank drive 88 By means of the crank drive 88 a very smooth and controlled Back and forth movement of the screening device generated.
  • the link chain 15 can, for example, also be a roller chain or other suitable band-shaped carrier element may be formed.
  • the sealing elements 80 can have a different shape as long as it is ensured that, in particular when painting over the screening device 19 through the portion 16 through the portioning the sealing elements 88 are essentially laterally sealed.
  • FIG. 6 shows a device designed according to the invention, which essentially corresponds to the device shown in FIG. 3.
  • Intermediate floors 47, 52 shown in FIG. 3 are two endless conveyor belts 95, 96 are provided, on which out of the dosing bunker 1 conveyed particles 3 are spent on the pendulum distributor 53.
  • the Conveyor belts 95, 96 are driven in the direction of arrows 97, 98, so that the particles lying on the conveyor belts 95, 96 3 in Direction of the open areas 49, 62 are transported and through this fall through in the direction of the vibrating screen 37, 38.
  • the conveyor belts 95, 96 are as by the intermediate floors 47, 52 shown in Fig. 3. It is advantageous that the use of the intermediate floors 47, 52 existing friction between the lower edges of the driver 16 and the intermediate floors 47, 52 and the associated wear avoided becomes.
  • the conveyor belts 95, 96 can in all embodiments can be used instead of the intermediate floors, so that for example a device according to FIG. 4 in a corresponding manner Conveyor belts can be built.
  • the screening described a sighting of a known type such as a wind sighting can be made to improve the sighting quality further increase. This can be achieved in that between the described screening devices and the one below Conveyor belt a device for wind sifting is arranged.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Disintegrating Or Milling (AREA)

Claims (18)

  1. Dispositif pour fractionner des particules (3) notamment fibreuses de différentes grandeurs, notamment de fibres, copeaux ou autres contenant de la lignocellulose et/ou de la cellulose, comportant une trémie de dosage (1) contenant les particules (3) non fractionnées, un dispositif de criblage (19, 39, 40, 68, 69) globalement plat et placé en aval de la trémie de dosage (1) et une unité d'alimentation (8) de la trémie de dosage (1), les particules (3) pouvant être amenées via cette unité d'alimentation de la trémie de dosage (1) à la surface du dispositif de criblage (19, 39, 40, 68, 69),
       caractérisé en ce que
       il est prévu dans la zone de la surface du dispositif de criblage (19, 39, 40, 68, 69) un dispositif de transport (10, 35, 36) avec de nombreux segments de division (17) séparés les uns des autres qui sont mobiles le long de la surface du dispositif de criblage (19, 39, 40, 68, 69) et à l'intérieur desquels à chaque fois une partie des particules (3) amenées par l'unité d'alimentation (8) sur la surface du dispositif de criblage (19, 39, 40, 68, 69) peut être transportée, notamment par translation, sur la surface du dispositif de criblage (19, 39, 40, 68, 69).
  2. Dispositif selon la revendication 1,
       caractérisé en ce que
       au moins une partie des segments de division (17) comprend à chaque fois un élément abrasif (16, 32) qui est contre la surface du dispositif de criblage (19, 39, 40, 68, 69) et qui, lors du déplacement des segments de division (17), est guidé au-dessus de la surface du dispositif de criblage (19, 39, 40, 68, 69) de manière à abraser.
  3. Dispositif selon la revendication 1 ou 2,
       caractérisé en ce que
       le dispositif de transport (10, 35, 36) est conçu notamment comme une bande sans fin à racloirs, la bande à racloirs (10, 35, 36) étant conçue notamment de manière à laisser passer les particules (3), au moins dans une zone partielle, dans une direction perpendiculaire à la surface du dispositif de criblage (19, 39, 40, 68, 69).
  4. Dispositif selon la revendication 3,
       caractérisé en ce que
       la bande à racloirs (10, 35, 36) comprend notamment des entraíneurs (16) en forme de plaques qui sont prévus de préférence à intervalles réguliers sur un ou plusieurs éléments porteurs (15) en forme de chaínes ou de bandes sans fin.
  5. Dispositif selon la revendication 4,
       caractérisé en ce que
       les entraíneurs (16) sont fixés, amovibles, sur l'élément porteur (15) ou sur les éléments porteurs (15) et/ou sont conçus imperméables à l'air et/ou en ce que les entraíneurs (16) sont disposés globalement perpendiculairement à la surface du dispositif de criblage (19, 39, 40, 68, 69), et/ou en ce que les éléments abrasifs sont formés à chaque fois par une partie (32) des entraíneurs (16), et/ou en ce que les entraíneurs (16) sont conçus flexibles, par exemple en caoutchouc durci, notamment dans leurs parties (32) formant les éléments abrasifs, et/ou en ce que les entraíneurs (16) sont conçus résistants à l'usure notamment dans leurs parties (32) formant les éléments abrasifs et ont notamment un revêtement résistant à l'usure, par exemple un revêtement en téflon, et/ou en ce que les entraíneurs (16) sont conçus en un matériau hydrofuge, non adhérent, notamment dans leurs parties (32) formant les éléments abrasifs.
  6. Dispositif selon l'une quelconque des revendications précédentes,
       caractérisé en ce que
       le dispositif de criblage (19, 39, 40, 68, 69) comprend notamment deux zones de criblage (21, 22) avec différentes ouvertures de criblage (23, 24, 70, 71), notamment en ce que les zones de criblage (21, 22) sont disposées Tune derrière l'autre le long de la direction du mouvement des segments de division (17) mobiles au-dessus de la surface du dispositif de criblage (19, 39, 40, 68, 69), les ouvertures de criblage (24) de la ou des zones de criblage (22) situées dans la direction du mouvement des segments de division (17) étant de préférence plus grandes que les ouvertures de criblage (23) de la ou des zones de criblage (21) situées à l'encontre de la direction du mouvement.
  7. Dispositif selon l'une quelconque des revendications 3 à 6,
       caractérisé en ce que
       la bande sans fin à racloirs (10, 35, 36) est guidée sur deux poulies de renvoi (9, 9') de telle sorte qu'un tronçon de bande inférieur (13, 46, 51) s'étend directement sur la surface du dispositif de criblage (19, 39, 40, 68, 69) et qu'un tronçon de bande supérieur (12, 45, 50) s'étend à une certaine distance de la surface du dispositif de criblage (19, 39, 40, 68, 69), ces deux tronçons s'étendant notamment chacun globalement parallèlement à la surface du dispositif de criblage (19, 39, 40, 68, 69), et en particulier en ce qu'il est prévu au moins à une extrémité de la bande à racloirs (10, 35, 36), notamment dans la zone des poulies de renvoi (9, 9'), un dispositif de réception (26, 73, 74) pour recevoir des particules rejetées.
  8. Dispositif selon Tune quelconque des revendications précédentes,
       caractérisé en ce que
       il est prévu en dessous du dispositif de criblage (69) au moins un dispositif d'interception pour les particules (3') criblées à travers le dispositif de criblage (69).
  9. Dispositif selon la revendication 7 ou 8,
       caractérisé en ce que
       il est prévu entre le tronçon de bande supérieur et le tronçon de bande inférieur (45, 50, 46, 51) au moins par zones un fond intermédiaire (47, 52, 66) et en ce que les entraíneurs (16) se trouvent contre le fond intermédiaire (47, 52, 66) avec leurs extrémités opposées aux parties (32) formant les éléments abrasifs de telle sorte qu'ils sont guidés de manière à abraser lors du mouvement des segments de division (17) au-dessus du fond intermédiaire (47, 52, 66), le fond intermédiaire (47, 52, 66) s'étendant notamment dune poulie de renvoi (9) dans la direction du mouvement du tronçon de bande supérieur (45, 50) jusqu'à l'autre poulie de renvoi (9') opposée et une zone (49, 62, 68) étant conçue entre cette autre poulie de renvoi (9') et l'extrémité (48, 61, 67), proche de cette autre poulie de renvoi (9'), du fond intermédiaire (47, 52, 66), laquelle zone peut être traversée par les particules (3) dans une direction perpendiculaire à la surface du dispositif de criblage (39, 40, 69), la zone étant conçue de préférence comme un autre dispositif de criblage (68).
  10. Dispositif selon Tune quelconque des revendications 3 à 9,
       caractérisé en ce que
       il est prévu l'une derrière l'autre en direction longitudinale deux bandes à racloirs (35, 36) conçues notamment symétriques l'une par rapport à l'autre et en particulier en ce qu'il est branché en aval de l'unité d'alimentation (8) un dispositif de distribution, notamment sous la forme d'un distributeur oscillant (53), avec lequel les particules (3) amenées de la trémie de dosage (1) par l'unité d'alimentation (8) peuvent être amenées notamment en alternance aux deux bandes à racloirs (35, 36).
  11. Dispositif selon Tune quelconque des revendications précédentes,
       caractérisé en ce que
       le dispositif de criblage (19, 39, 40, 69) et/ou l'autre dispositif de criblage (68) est conçu comme un crible oscillant (18, 37, 38) ou comme un crible secoueur vibrant, le crible oscillant (18) étant notamment mobile en va-et-vient par l'intermédiaire d'un mécanisme à bielle et à manivelle (88) et/ou la course maximale du crible oscillant (18) étant comprise entre environ 10 cm et 1 m, de préférence entre environ 30 cm et 70 cm, notamment environ 50 cm, et/ou le crible oscillant (18) étant mobile le long d'un guide à galet de roulement (92) et/ou la vitesse de déplacement maximale du crible oscillant (18) dans la direction de transport étant supérieure à la vitesse de transport des segments de division (17).
  12. Dispositif selon la revendication 10 ou 11,
       caractérisé en ce que
       les deux bandes à racloirs (35, 36) peuvent être entraínées en sens contraire, les deux tronçons de bandes supérieurs (45, 50) étant notamment mobiles de manière à s'éloigner l'un de l'autre.
  13. Dispositif selon Tune quelconque des revendications précédentes,
       caractérisé en ce que
       les segments de division (17) sont conçus fermés latéralement au moins par zones et/ou en ce que des éléments d'étanchéification (80) notamment en forme de languettes sont prévus dans les zones latérales des segments de division (17), les éléments d'étanchéification (80) étant fixés notamment aux côtés frontaux latéraux des entraíneurs (16) et à chaque fois deux éléments d'étanchéification (80) consécutifs dans la direction de transport se chevauchant de préférence au moins par zones, ce qui produit à chaque fois une étanchéification s'étendant sur toute la largeur d'un segment de division.
  14. Dispositif selon l'une quelconque des revendications 7 à 13,
       caractérisé en ce que
       un élément d'étanchéification central (84) conçu notamment comme paroi latérale est disposé entre le tronçon de bande supérieur et le tronçon de bande inférieur (12, 13) sur le côté en dehors des segments de division (17), en particulier en ce que globalement toute la zone entre le tronçon de bande supérieur et le tronçon de bande inférieur (12, 13) est étanchéifiée latéralement par l'élément d'étanchéification central (84) et/ou en ce qu'il est prévu des deux côtés en dehors des segments de division (17) à chaque fois un élément d'étanchéification central (84) et/ou en ce que l'élément d'étanchéification central (84) est assemblé de manière à assurer l'étanchéité aux éléments d'étanchéification (80) terminant latéralement les segments de division (17), notamment en ce qu'il est en contact d'abrasion avec étanchéité avec ces éléments d'étanchéification (80) lorsque ceux-ci se déplacent.
  15. Dispositif selon l'une quelconque des revendications 7 à 14,
       caractérisé en ce que
       il est prévu au-dessus du tronçon de bande supérieur (12) un élément d'étanchéification supérieur (87) conçu notamment comme une partie de paroi.
  16. Dispositif selon l'une quelconque des revendications précédentes,
       caractérisé en ce que
       il est prévu au-dessus des segments de division un dispositif de transport (95, 96) avec lequel les particules sortant de la trémie de dosage peuvent être transportées jusqu'à une zone prédéterminée au-dessus du dispositif de criblage, le dispositif de transport étant conçu de préférence comme une bande de transport (95, 96), notamment sans fin.
  17. Dispositif pour disperser des particules (3), fibreuses de préférence, notamment imprégnées de liant, par exemple des fibres, copeaux ou autres particules analogues contenant de la lignocellulose et/ou de la cellulose, notamment pour la fabrication d'objets formés, principalement en forme de plaques, avec un dispositif pour fractionner selon Tune quelconque des revendications précédentes et avec une bande transporteuse (26) placée en dessous du dispositif de criblage (19, 39, 40) et destinée à recevoir un voile (28, 63) formé des particules (3, 3") ayant traversé le dispositif de criblage (19, 39, 40).
  18. Dispositif selon la revendication 17,
       caractérisé en ce que
       le dispositif pour fractionner est conçu mobile en direction longitudinale par rapport à la bande transporteuse et/ou en ce que, en plus d'un ou de plusieurs dispositifs pour fractionner selon l'une quelconque des revendications 1 à 16 pour la dispersion d'une ou de plusieurs couches de couverture, des têtes de cylindre distributeur de couche médiane sont prévues pour la dispersion d'une couche médiane du voile.
EP98920525A 1997-04-17 1998-04-15 Dispositif pour fractionner et disseminer en particulier des particules fibreuses Expired - Lifetime EP0975457B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19716130 1997-04-17
DE1997116130 DE19716130C1 (de) 1997-04-17 1997-04-17 Vorrichtung zum Streuen von lignozellulose- und/oder zellulosehaltigen Teilchen unterschiedlicher Größe
DE19814150 1998-03-30
DE19814150A DE19814150A1 (de) 1998-03-30 1998-03-30 Vorrichtung zum Fraktionieren und Streuen von insbesondere faserigen Teilchen
PCT/EP1998/002202 WO1998047677A1 (fr) 1997-04-17 1998-04-15 Dispositif pour fractionner et disseminer en particulier des particules fibreuses

Publications (2)

Publication Number Publication Date
EP0975457A1 EP0975457A1 (fr) 2000-02-02
EP0975457B1 true EP0975457B1 (fr) 2001-11-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98920525A Expired - Lifetime EP0975457B1 (fr) 1997-04-17 1998-04-15 Dispositif pour fractionner et disseminer en particulier des particules fibreuses

Country Status (19)

Country Link
EP (1) EP0975457B1 (fr)
JP (1) JP2001521455A (fr)
CN (1) CN1095737C (fr)
AR (1) AR012444A1 (fr)
AT (1) ATE208692T1 (fr)
AU (1) AU740967B2 (fr)
BR (1) BR9808682A (fr)
CA (1) CA2286623A1 (fr)
DE (1) DE59802145D1 (fr)
DK (1) DK0975457T3 (fr)
ES (1) ES2164422T3 (fr)
ID (1) ID24634A (fr)
NO (1) NO995045L (fr)
NZ (1) NZ500291A (fr)
PL (1) PL336161A1 (fr)
RO (1) RO119293B1 (fr)
RU (1) RU2177875C2 (fr)
TR (1) TR199902585T2 (fr)
WO (1) WO1998047677A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011808C1 (de) * 2000-03-10 2001-12-13 Binos Technologies Gmbh & Co K Verfahren und Vorrichtung zur Herstellung eines Vlieses
SE524816C2 (sv) * 2003-02-17 2004-10-05 Metso Paper Sundsvall Ab Förfarande och anordning för formning av en matta av material
DE102006038183A1 (de) * 2006-08-14 2008-02-21 Dieffenbacher Gmbh + Co. Kg Verfahren und Streumaschine zur vollständigen oder schichtweisen Herstellung einer Streugutmatte
DE102010002066A1 (de) * 2010-02-17 2011-08-18 Dieffenbacher GmbH + Co. KG, 75031 Verfahren und eine Anlage zur Herstellung einer Streugutmatte aus zumindest einer gestreuten Schicht im Zuge der Herstellung von Holzwerkstoffplatten in einer Presse
AU2012357001B8 (en) * 2011-12-23 2017-02-16 Basf Se Lignocellulose materials comprising expanded plastic particles non-homogeneously distributed in the core
RS54924B1 (sr) * 2011-12-23 2016-10-31 Basf Se Lignocelulozni materijali sa lignoceluloznim vlaknima u spoljašnjim slojevima i ekspandiranim plastičnim česticama u jezgru, kao i postupci i njihova primena
US9266308B2 (en) 2011-12-23 2016-02-23 Basf Se Lignocellulosic materials with expanded plastics particles present in nonuniform distribution in the core
WO2016059553A1 (fr) * 2014-10-13 2016-04-21 Imal S.R.L. Système de production de panneaux de copeaux de bois
JP7122113B2 (ja) * 2017-12-27 2022-08-19 ニチハ株式会社 建材製造装置および建材製造方法
CN109968469A (zh) * 2017-12-28 2019-07-05 东北林业大学 重组竹竹束定量定向分层铺装技术
CN109277873B (zh) * 2018-10-29 2019-08-27 武汉华电工程装备有限公司 一种发电锅炉支撑梁用金属板的制造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1653224C3 (de) * 1966-06-14 1975-11-20 Max Dipl.-Ing. 7292 Baiersbronn Himmelheber Streuvorrichtung zur Herstellung von Spänevliesen für die anschließende Verpressung zu Holzspanplatten oder dgl
DE2443125A1 (de) * 1974-09-09 1976-03-18 Bbc Brown Boveri & Cie Selbstreinigende siebvorrichtung
BR8007232A (pt) * 1979-03-05 1981-02-03 Buehler Ag Geb Processo para a classificacao de graos ou sementes e dispositivo de classificacao
DE8016081U1 (de) * 1980-06-18 1981-07-09 G. Siempelkamp Gmbh & Co, 4150 Krefeld Vorrichtung zum Aufstreuen von Spänen auf eine Streuunterlage
DE3115728A1 (de) * 1981-04-18 1982-11-04 G. Siempelkamp Gmbh & Co, 4150 Krefeld Anlage zum streuen von spaenen, fasern u.dgl. streugut im zuge der herstellung von spanplatten, faserplatten u.dgl.
JPH084779B2 (ja) * 1988-07-08 1996-01-24 五洋建設株式会社 グラブ・ポンプ浚渫船の浚渫土砂中障害物除去装置

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Publication number Publication date
DK0975457T3 (da) 2001-12-17
BR9808682A (pt) 2000-07-11
AR012444A1 (es) 2000-10-18
ES2164422T3 (es) 2002-02-16
DE59802145D1 (de) 2001-12-20
NO995045D0 (no) 1999-10-15
ID24634A (id) 2000-07-27
JP2001521455A (ja) 2001-11-06
NO995045L (no) 1999-12-16
TR199902585T2 (xx) 2000-06-21
CN1256658A (zh) 2000-06-14
WO1998047677A1 (fr) 1998-10-29
CN1095737C (zh) 2002-12-11
NZ500291A (en) 2001-04-27
AU740967B2 (en) 2001-11-15
RU2177875C2 (ru) 2002-01-10
EP0975457A1 (fr) 2000-02-02
RO119293B1 (ro) 2004-07-30
CA2286623A1 (fr) 1998-10-29
PL336161A1 (en) 2000-06-05
ATE208692T1 (de) 2001-11-15
AU7335498A (en) 1998-11-13

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