EP3130436B1 - Windstreuvorrichtung - Google Patents

Windstreuvorrichtung Download PDF

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Publication number
EP3130436B1
EP3130436B1 EP16174354.7A EP16174354A EP3130436B1 EP 3130436 B1 EP3130436 B1 EP 3130436B1 EP 16174354 A EP16174354 A EP 16174354A EP 3130436 B1 EP3130436 B1 EP 3130436B1
Authority
EP
European Patent Office
Prior art keywords
air
openings
register
fans
height
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.)
Active
Application number
EP16174354.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3130436A1 (de
Inventor
Sergio Mulazzi
Gianluca Grasso
Roberto Pannunzio
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siempelkamp Maschinen und Anlagenbau GmbH and Co KG filed Critical Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Publication of EP3130436A1 publication Critical patent/EP3130436A1/de
Application granted granted Critical
Publication of EP3130436B1 publication Critical patent/EP3130436B1/de
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/02—Arrangement of air or material conditioning accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/06—Selective separation of solid materials carried by, or dispersed in, gas currents by impingement against sieves
    • 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

Definitions

  • the invention relates to a wind scattering device for spreading of grit on a grit conveyor, with at least a wind ramming chamber, which has an upper grit opening, via which grit is introduced into the wind raking chamber, one or more fans for generating air streams for the separation of the scattering material in the windbreak chamber, an air supply housing (between the fans and the windbreak chamber) through which the air flows generated by the fans are directed into the windbreak chamber and an adjoining in the flow direction of the air supply housing nozzle unit, wherein the nozzle unit comprises a nozzle chamber having a plurality of outlet nozzles arranged in columns and rows.
  • Such a (wind) spreader is usually integrated into a grit plant for the production of grit mats for the production of material plates, in particular wood-based panels.
  • Wood-based panels in particular means chipboard made of wood chips. In principle, however, fibreboards are also made of wood fibers.
  • the spreading material mats sprinkled on the spreading material conveyor are B. in a press, for example, a continuous working press or a cycle press, using pressure and heat to wood-based panels pressed.
  • the quality of the wood-based panels produced depends decisively on the quality or the properties of the spreading material mats generated by the spreading device.
  • the grit is usually glued grit, z. B. glued chips that are fed from a grit bunker or dosing hopper of the spreader.
  • a grit plant can have a plurality of scattering devices or scattering heads, in particular if multilayer grit mats of two outer layers (of fine material) and one middle layer (of coarse material) are to be produced.
  • the individual scattering devices are then arranged one behind the other along the conveying direction of the scattering belt conveyor, so that initially a first covering layer is scattered onto the scattering belt conveyor, then the middle layer onto the first covering layer and then again the second covering layer onto the middle layer.
  • the wind scattering device according to the invention is particularly preferably used for the production of cover layers within such a grit plant.
  • the swarf chamber separates the chips, whereby coarser chips fall down in the vicinity of the nozzle unit and finer chips in the rear area, d. H. fall in the nozzle unit facing away from the area of the windstrike chamber.
  • cover layers can be produced whose chip size becomes finer in the direction of the surface of the mat.
  • one or more flying spine screens may be disposed in the windstrike chamber to optimize separation.
  • the DE 10 2007 056 109 A1 describes a wind scattering device in which a plurality of diffuser plates are arranged in the air supply housing, which is arranged between the fan and the windbreak chamber.
  • adjustment flaps are arranged with which the quantity distribution of the air flow in height is adjustable.
  • the air distribution across the width can be influenced by vertically adjustable registers.
  • the invention has for its object to provide a wind diffuser of the type described above, with which in an economical manner grit mats are produced in high quality.
  • the invention teaches according to a first aspect, that the outlet nozzles each funnel-shaped in the flow direction of a rectangular, z. B. taper square input section into a round or oval output cross-section.
  • a particularly uniform air flow can bring into the Windstreuguthunt, at the same time very low pressure losses.
  • the design of the outlet nozzles with a rectangular inlet cross-section reduces possible baffles for the air, since only narrow webs remain between the individual rectangular inlet cross-sections.
  • This rectangular inlet cross-section is then funnel-shaped in a round or oval output cross-section, which ensures a uniform entry of the air flow in the windbreak chamber.
  • the outlet nozzles with round exit cross-section are very easy to clean and also the funnel-shaped transitions from the rectangular cross section to the round cross section allow easy cleaning, as the particles can not settle in "corners".
  • the nozzle chamber with the outlet nozzles may be of one or more plates, e.g. B. aluminum plate (s) are formed, in which the nozzles are formed or incorporated.
  • the nozzle unit has a register unit arranged downstream of the distribution chamber, which has a plurality of register strips adjacent to one another, which have a plurality of openings assigned to the outlet nozzles distributed over the height and for adjustment variable outlet cross sections of the nozzle unit are height adjustable. So can be z. B. set over partial coverage of the output cross-section with the register strip variable outlet cross-sections, so that over the width of the nozzle unit, the air currents can be variably adjusted.
  • the adjustable by displacement remain resulting openings always centric to the outlet nozzles.
  • the invention now proposes that the register unit has a plurality of register strips arranged one behind the other in the flow direction, wherein the register strips of the individual planes are independently adjustable in height relative to one another and / or relative to the output cross sections of the outlet nozzles.
  • a first level with first register strip and a second level with second register strip may be provided, wherein the first register strip and the second register strip have openings with at least partially different extension. So it may be z. B. be useful to provide the first register strip in at least a first height range with first openings having a first height extent, z. B. round openings. This height extent corresponds to the output cross sections of the nozzles. In a second height range second openings with a contrast greater height extent, z. B.
  • slot-shaped or oval openings may be provided. If such a first register strip is adjusted in height, then only a reduction of the outlet cross sections in the region of the first (round) openings takes place.
  • the slot-shaped second openings have such a large height extent that the output cross sections of the outlet nozzles remain free and consequently the outlet cross sections are not reduced.
  • second register strips can be provided, in which the ratios are designed such that in the course of Height adjustment of these register strips the outlet cross sections are varied in other height ranges.
  • the air flows can not only vary across the width, but it is also possible to variably set the flow conditions in different height ranges of the nozzle unit.
  • These adjustment possibilities can be further expanded by providing a plurality of fans which supply different height ranges of the nozzle unit.
  • at least four fans can be provided, two of which are associated with fans in an upper area of the nozzle unit and two fans in a lower area of the nozzle unit.
  • the register strips according to the invention can be implemented particularly preferably in an embodiment in which the outlet nozzles are configured funnel-shaped in the manner described. However, these two aspects of the invention can also be implemented independently of each other.
  • the nozzle unit has a plurality of outlet tubes assigned to the outlet nozzles with a predetermined length, which are arranged downstream of the register unit. Consequently, a field or a matrix of outlet pipes adjoins the nozzle field or the nozzle matrix in an aligned manner, so that the air from the outlet nozzles via the register unit does not get directly into the windbreak chamber, but is first passed through the outlet pipes.
  • These outlet tubes preferably have a round cross section which is aligned with the round outlet cross section of the outlet nozzles. This avoids turbulences and thus pressure losses.
  • the fans each produce vertically oriented air streams.
  • the air supply housing is formed as a deflection housing with a vertical housing portion, a horizontal housing portion and a deflecting portion arranged therebetween. Consequently, the vertical air flows pass from the fans via the vertical housing section into the deflection section where they are deflected by 90 ° into the horizontal.
  • the fans can preferably be designed as axial fans.
  • in the air supply housing z. B. in the vertical housing portion one or more baffles arranged, which are aligned parallel to the flow direction and extending along the flow direction. Such baffles are particularly preferably arranged in the vertical housing section immediately below the fans.
  • one or more diffuser plates may be arranged in the air feed housing, which are preferably oriented transversely to the flow direction, so that the air flow passes through the diffuser plate.
  • a first diffuser plate can, for. B. be arranged in the vertical housing portion below the baffles, wherein such a diffuser plate is then aligned horizontally.
  • a second diffuser plate can, for. B. be arranged in the horizontal housing portion behind the deflection, in the flow direction in front of the nozzle unit.
  • Such a diffuser plate is z. B. oriented vertically.
  • the air supply housing is provided with one or more closable maintenance openings.
  • z. B. on both sides of the Umlenkgeophuses z. B. in the horizontal housing section maintenance openings may be provided as a manhole openings through which the nozzle unit of the air supply housing facing rear side is easily accessible, so that z. B. makes the nozzle unit easy to clean.
  • the scattering device according to the invention is characterized inter alia by the fact that pressure losses in the entire arrangement are significantly reduced, through the optimized flow paths. This leads to a significant reduction in the power consumption of the system and thus to a particularly economical operation.
  • an individual adaptation to different conditions is possible, so that the operation can be optimized. In particular, very uniform or homogeneous flows can thus be generated in the chamber.
  • the invention also provides a grit plant for the production of grit mats for the production of the material plates, in particular wood-based panels with at least one spreader of the type described and with at least one grit hopper above the spreader and a scatter band conveyor below the spreader.
  • the wind scattering device according to the invention is consequently not only isolated, but in particular also placed under protection as part of a grit plant.
  • Fig. 1 is a grit plant for the production of grit mats for the production of wood-based panels, especially chipboard represented.
  • This grit plant has a grit hopper 1, which serves as a dosing bunker is formed and the grit z. B via spreading rollers or metering rollers 2 to a spreader 3 emits. With the spreader 3, the spreading material is scattered on the scattering belt conveyor 4, on which forms a grit mat, which then in a press using pressure and heat to a wood-based panel, z. B. chipboard is pressed.
  • Such a grit system generally has a plurality of scatterers, to produce multiple layers of a grit mat, z. As outer layers and a middle layer, on.
  • Fig. 1 By way of example only an area with a scattering device 3 for producing a cover layer of relatively fine chips is shown.
  • This scattering device 3 is designed as a wind scattering device. It has a Windstreusch 5, which has an upper grit opening 6, via which the grit from the grit hopper 1 enters the Windstreusch 5.
  • the scattering device 3 a plurality of fans 7 for generating air streams for the separation of the material to be spread in the windbreak chamber. Between the fans 7 and the windbreak chamber 5, an air supply housing 8 is arranged, through which the air flows generated by the fans 7 are directed into the windbreak chamber 5.
  • the air supply housing 8 is followed by a nozzle unit 12, which consequently forms the transition between the air supply housing 8 and the windbreak chamber 5.
  • the air streams thus end up coming out of the air supply housing through the nozzle unit 12 and from there into the windbreak chamber 5.
  • This nozzle unit 12 has a nozzle chamber 13 with a plurality of outlet nozzles 14 arranged in columns and rows. These outlet nozzles 14 taper in a funnel shape in the flow direction and pass from a rectangular inlet cross-section E into a round outlet cross-section A. This is z. In Fig. 4 as well as in the FIGS. 9 and 10 shown. It can be seen that only very narrow webs 15 are arranged from the direction of the air supply housing 8 between the individual outlet nozzles 14, which provide minimal resistance to the air flows.
  • the nozzle unit 12 has a register unit 16 arranged downstream of the nozzle chamber 13 in the flow direction, which has a plurality of register strips 17a, 17b which are associated with the columns and have a plurality of openings 18a, 18b assigned to the outlet nozzles 14 distributed over the height.
  • these register strips 17a, 17b are height adjustable. This means that the air flows are not always over the full outlet cross section of the outlet nozzles, but - depending on the setting of the register strips 17a, 17b - Where appropriate, exit via a relative to the output cross-section A reduced outlet cross-section.
  • the register unit 16 has several planes of register strips 17a, 17b arranged one behind the other in the flow direction.
  • the register strips 17a and 17b of the two planes are independently adjustable in height relative to the output cross sections A of the outlet nozzles 14.
  • first register strips 17a are provided in the first plane and second register strips 17b in the second plane.
  • both a plurality of first register strips 17a and a plurality of second register strips 17b are distributed, wherein the first register strips 17a and the second register strips 17b are arranged one behind the other in the flow direction (in pairs).
  • the first register strips 17a on the one hand and the second register strips 17b on the other hand have openings 18a, 18b with different expansion.
  • the first register strips 17a have round openings 18a in the lower area and slot-like openings 18b in the middle area and in the upper area. If such a first register strip 17a is adjusted vertically, then the outlet cross section is influenced only in the region of the lower outlet nozzles 14, while the outlet cross section is not influenced in the middle region and in the upper region, since the elongated holes 18b have a relatively large height extent (greater than having the output cross sections A). Consequently, with the aid of these first register strips 17a, the air streams in the lower region of the nozzle unit can be manipulated and set to the desired conditions, in principle distributed individually over the width for each individual register strip 17a.
  • the second register strips 17b have slot-like openings 18b in the lower area and also slot-like openings 18b in the upper area and round openings 18a in the middle area therebetween. Consequently, with the aid of these second register strips 17b, the outlet cross sections in the middle region of the nozzle unit 12 can be manipulated. Consequently, in the illustrated embodiment, the flow conditions in the lower region and in the middle region can be adjusted independently of one another and independently of the upper region via the two register strips 17a, 17b. In this embodiment, no manipulation in the upper region of the nozzle unit 12 is possible via the register strip.
  • the register strips 17a, 17b are arranged on a common carrier 19, which is provided with corresponding adjusting means 20, on the one hand for the first register strip 17a and on the other hand for the second register strip 17b.
  • the adjustment is done manually, z. B. in the course of commissioning, z. B. screws, spindles or the like, but can also be provided with adjustable drives.
  • the nozzle unit 12 has a multiplicity of outlet tubes 21 which are assigned to the individual outlet nozzles 14, the outlet tubes 21 being arranged downstream of the register unit 16 in the flow direction.
  • the outlet tubes have a round cross-section which is aligned with the outlet cross-sections A of the outlet nozzles 14. From these outlet pipes 21, the air enters the windbreak chamber 5 a.
  • the fans 7 generate vertically oriented air flows.
  • the fans 7 are formed in the embodiment as axial fans.
  • the air supply housing 8 is formed in the embodiment as Umlenkgephaseuse. It has a vertical housing section 22 and a horizontal housing section 24 and a corresponding deflection section 23 therebetween. Consequently, in the deflection section 23, the air flows are deflected by 90 ° from the vertical to the horizontal.
  • baffles 25 and the diffuser plates 26a, 26b are used in the vertical housing sections 22, which are each associated with the individual fans 7, baffles 25 are arranged, which are aligned approximately parallel to the flow direction and are therefore aligned in the embodiment in the vertical direction. Below these baffles 25, the diffuser plates 26 are arranged, which are aligned horizontally.
  • a further diffuser plate 26 is arranged, which is vertically aligned.
  • the air supply housing 8 is provided on both sides with maintenance openings, which are not shown in the figures.
  • these maintenance openings which are relatively large formed as manhole openings, the nozzle unit 12 is accessible for maintenance purposes and in particular cleaning purposes.
  • the nozzle unit 12 has thirty columns arranged next to one another and seventeen rows arranged one above the other.
  • the upper fans supply the upper twelve rows and the lower fans supply the lower five rows.
  • the outlet cross sections of the lower five rows can be manipulated, and the middle six rows can be manipulated via the second register strips 17b.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Nozzles (AREA)
  • Drying Of Solid Materials (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP16174354.7A 2015-07-23 2016-06-14 Windstreuvorrichtung Active EP3130436B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015112013.5A DE102015112013A1 (de) 2015-07-23 2015-07-23 Windstreuvorrichtung

Publications (2)

Publication Number Publication Date
EP3130436A1 EP3130436A1 (de) 2017-02-15
EP3130436B1 true EP3130436B1 (de) 2019-09-11

Family

ID=56132805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16174354.7A Active EP3130436B1 (de) 2015-07-23 2016-06-14 Windstreuvorrichtung

Country Status (3)

Country Link
EP (1) EP3130436B1 (zh)
CN (1) CN106362946B (zh)
DE (2) DE102015112013A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107139308A (zh) * 2017-07-14 2017-09-08 湖北凯利板业有限公司 一种秸秆粉料铺装机
DE102017124063A1 (de) * 2017-10-16 2019-04-18 Dieffenbacher GmbH Maschinen- und Anlagenbau Streuanlage und Verfahren zur Herstellung einer Streugutmatte im Zuge der Herstellung von Werkstoffplatten
CN108057601A (zh) * 2017-12-22 2018-05-22 高双 环保绿植种子的清洗及筛选装置
DE102018107354A1 (de) * 2018-03-28 2019-10-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Streuvorrichtung
DE102020005686B4 (de) 2020-09-17 2022-05-05 Siempelkamp Maschinen- Und Anlagenbau Gmbh Windstreuvorrichtung
DE102020005687B4 (de) 2020-09-17 2022-03-24 Siempelkamp Maschinen- Und Anlagenbau Gmbh Windstreuvorrichtung
EP3970867A3 (de) 2020-09-17 2022-09-21 Siempelkamp Maschinen- und Anlagenbau GmbH Windstreuvorrichtung
DE102021124789B3 (de) 2021-09-24 2022-10-13 Siempelkamp Maschinen- Und Anlagenbau Gmbh Windstreuvorrichtung und Streugutanlage
DE102021004823A1 (de) 2021-09-26 2023-03-30 Dieffenbacher GmbH Maschinen- und Anlagenbau Windstreukammer und Verfahren zum Streuen und Formen eines rieselfähigen Materials auf einem Formband

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US1210868A (en) * 1915-12-30 1917-01-02 Edward J Steckle Separating device.
US3933626A (en) * 1973-07-12 1976-01-20 Ottawa Silica Company Classifier for particulate material
US4045334A (en) * 1976-05-28 1977-08-30 Amf Incorporated Method and apparatus for separating lighter and heavier portions of threshed tobacco
US4191294A (en) * 1977-12-15 1980-03-04 American Cyanamid Company Empty capsule ejector
US5447275A (en) * 1993-01-29 1995-09-05 Canon Kabushiki Kaisha Toner production process
DE19835419A1 (de) 1998-08-05 2000-02-10 Kvaerner Panel Sys Gmbh Vorrichtung und Verfahren zur Windsichtung
DE19839024A1 (de) * 1998-08-27 2000-03-09 Wacker Chemie Gmbh Windsichten für Polysilicium
DE102006038183A1 (de) 2006-08-14 2008-02-21 Dieffenbacher Gmbh + Co. Kg Verfahren und Streumaschine zur vollständigen oder schichtweisen Herstellung einer Streugutmatte
DE102007056109A1 (de) 2007-11-15 2009-05-28 Dieffenbacher Gmbh + Co. Kg Vorrichtung zur Windsichtung von Streugut im Zuge der Streuung einer Pressgutmatte oder einer Schicht derselben
CN102744213B (zh) * 2012-06-18 2015-04-08 同济大学 一种矿粉颗粒射流分选装置

Also Published As

Publication number Publication date
CN106362946A (zh) 2017-02-01
CN106362946B (zh) 2021-04-02
EP3130436A1 (de) 2017-02-15
DE202016008367U1 (de) 2017-09-04
DE102015112013A1 (de) 2017-01-26

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