[go: up one dir, main page]

WO2002024350A1 - Appareil permettant de lisser l'ecoulement d'un materiau provenant d'un alimenteur a godet - Google Patents

Appareil permettant de lisser l'ecoulement d'un materiau provenant d'un alimenteur a godet Download PDF

Info

Publication number
WO2002024350A1
WO2002024350A1 PCT/FI2001/000814 FI0100814W WO0224350A1 WO 2002024350 A1 WO2002024350 A1 WO 2002024350A1 FI 0100814 W FI0100814 W FI 0100814W WO 0224350 A1 WO0224350 A1 WO 0224350A1
Authority
WO
WIPO (PCT)
Prior art keywords
material flow
sliding plane
bucket feeder
feeder
bucket
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.)
Ceased
Application number
PCT/FI2001/000814
Other languages
English (en)
Inventor
Pekka Kokko
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.)
Andritz Oy
Original Assignee
Andritz Oy
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 Andritz Oy filed Critical Andritz Oy
Priority to AU2001289968A priority Critical patent/AU2001289968A1/en
Publication of WO2002024350A1 publication Critical patent/WO2002024350A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
    • 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
    • B07B11/06—Feeding or discharging arrangements
    • 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

Definitions

  • the invention relates to an apparatus for levelling out intermittent fluctuation caused by design and mechanics of a bucket feeder in a material flow supplied from the bucket feeder onto an inclined sliding plane and containing wood chips, sawdust or bark or combinations thereof.
  • This type of apparatus can be used for example in connection with the appara- tus known from Finnish utility model No. 3899.
  • This prior known apparatus is used for sorting wood chips, involving chips in a variety of sizes and similar, substantially hexahedral pieces having a length and a width, as well as a thickness substantially less than the latter, and possibly fines particles, by means of an impulse action, such that the fines particles form a separate fraction and the chips form two or more fractions according to the thickness thereof, the miscellaneous chips and the fines particles being adapted to be sorted from each other by means of one or more separating walls arranged to comply with various trajectories established by means of the impulse action, said apparatus comprising a feeder for supplying the wood chips onto a sloping support sur- face essentially in a single layer, said support surface being dimensioned for adapting the chips to rest upon the longitudinal/lateral surface thereof and for sliding the same on said longitudinal/lateral surface along said sloping support surface over a slit extending
  • Such prior known apparatus is intended for separating a variety of fractions from a high-rate mass flow of wood chips (volume in hundreds of cubic meters an hour), as determined by thickness of the individual chips. This also enables the separation of higher density stuff, such as scrap, as well as irregularly shaped harmful particles. With regard to a faultless operation of the apparatus, it is important that the wood chips to be processed can be spread evenly in a single layer on a sloping support surface included in the apparatus.
  • the bucket feeder enables the dosage of a material to be supplied by a bucket feeder onto an inclined sliding plane at an averagely constant capacity.
  • the material flow emerging from a bucket feeder displays transient fluctuation, the timing of which coincides with the turning of another bucket into a vacant area above the sliding plane.
  • the number of buckets included in a bucket feeder is naturally limited, and even the largest material particle to be handled must fit in the bucket.
  • this object is accomplished in such way that, and an apparatus of the invention is characterized in that that the material flow discharging from the bucket feeder has its passage adapted to be affected by providing the same with a number of tumblers applying an impact on the mate- rial flow from above or below, or from both sides of the same.
  • the arrangement is such that the tumbler comprises a baffle mounted on the inclined sliding plane.
  • the baffle comprises preferably a plate extending lengthwise of the material flow and projecting from the sliding plane.
  • the baffle spreads the material flow in a lateral direction of the sliding plane.
  • the arrangement is such that the tumbler comprises an elastically compliant flap mounted above the material flow discharging from the bucket feeder onto the sliding plane.
  • the flap is preferably dimensioned for restricting the passage of peak points appearing in the material flow by cutting off the peaks.
  • the flap comprises preferably a rubber skirt extending across the width of the sliding plane.
  • Fig. 1 shows a bucket feeder in a diagrammatic section, fitted in an ap- paratus for sorting wood chips in separate fractions.
  • Fig. 2 shows the bucket feeder of fig. 1 in a larger scale and fitted with an apparatus of the invention.
  • Fig. 1 shows schematically an apparatus for sorting wood chips 1 in separate fractions. Fines particles 13, possibly contained in the wood chips 1 , are sorted out to form a separate fraction and individual chips 11 , 12 are determined by the thickness thereof as excess thickness chips 11 (reject) and accepted chips 12 (accept).
  • the apparatus comprises a feeder 6 for supplying the wood chips 1 onto a sloping support surface 2 for a substantially single layer.
  • the individual chips 11 , 12 settle in a natural way on the support surface 2 to rest upon the largest surface thereof, i.e. in the case of wood chips, upon the longitudinal/lateral surface thereof.
  • the support surface 2 is a solid, flat, and durable level surface, which forms a steeply sloping slide surface for the wood chips 1 to be sorted.
  • the wood chips 1 emerging from the feeder 6 are first adapted to slide down the sloping support surface 2 and then over a slit 3 arranged across the support surface, said slit being adapted to deliver an impulse action 4 directed away from said support surface 2 and applied to one or more chips 11, 12 or fines particles 13 presently in line with the slit.
  • the impulse action is adapted to be produced by means of a gas flow 4, preferably an air flow.
  • the impulse action 4 may have a direction which is perpendicular to the support surface 2, or also at an oblique angle relative to the support surface 2.
  • the air flow is generated by a fan 7.
  • a nozzle chamber 8 is arranged between the fan 7 and the slit 3.
  • the varying thickness chips 11 , 12 and the eventual fines particles 13 are adapted to be separated from each other in compliance with various trajectories defined by the impulse action 4 for the particles to be sorted.
  • a pressure-generated impulse sends the individual chips 11 , 12 flying in different trajectories defined by a chip thickness, and the flow of chips is divided in separate fractions by means of a separating wall 5.
  • the averagely minimum thickness chips 12 fly over the separating wall 5 and are further guided to a discharge screw 10. Respectively, the averagely maximum thickness chips fly a shorter distance and fall into a feeder 6' present between the separating wall 5 and the slit 3.
  • the averagely maximum thickness chips 11 received in the feeder 6' are reprocessed in a lower second apparatus, whereby a fraction thereof (the averagely lightest fraction) is guided over a separating wall 5' further onto the discharge screw 10, and another fraction (the averagely heaviest fraction) falls into a chute fitted between the separating wall 5' and the slit 3 and provided with a discharge screw 9.
  • Fig. 2 depicts a detail of the feeder 6, particularly a bucket feeder, applied in conjunction with the apparatus of fig. 1. However, it is obvious that the presently discussed bucket feeder 6 is not intended solely for the apparatus shown in fig. 1 , but is useful elsewhere, as well.
  • the bucket feeder enables the dosage of a material to be supplied by a bucket feeder onto the inclined sliding plane 2 at an averagely constant capacity.
  • the material flow emerging from a bucket feeder displays transient fluctuation.
  • the material flow 1 discharging from the bucket feeder 6 has its passage adapted to be affected by a number of tumblers 15, 16 arranged in the material flow 1.
  • the tumbler 15 comprises a baffle mounted on the sliding plane 2.
  • the baffle 15 comprises preferably a plate extending lengthwise of the material flow 1 , projecting from the sliding plane 2, and increasing in height in advancing direction of the material flow 1.
  • the tumbler 15 can also be constituted for example by a dowel projecting from the sliding plane 2.
  • the tumblers 15 are preferably mounted at even spaces across the entire width of the sliding plane 2.
  • a tumbler above the material flow 1 , but in this case it must be elastically compliant.
  • such a tumbler is represented by reference numeral 16, and it is constituted by a rubber skirt extending across the width of the sliding plane 2, which is dimensioned so as to restrict the passage of peak points appearing in the material flow 1 , by cutting off the peaks.

Landscapes

  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

Cette invention concerne un appareil permettant de « lisser » des variations intermittentes dues au dessin et à la géométrie d'un godet d'alimentation (6) dans un flux de matériau (1) provenant dudit godet (6) sur un plan coulissant incliné (2) et renfermant des copeaux (11, 12), de la sciure (13), des fragments d'écorce, seuls ou mélangés. Le flux de matériau (1) en provenance du godet d'alimentation (6) s'écoule entre des tambours (15, 16) qui le soumettent à des chocs appliqués de haut en bas, de bas en haut ou latéralement de part et d'autre.
PCT/FI2001/000814 2000-09-20 2001-09-19 Appareil permettant de lisser l'ecoulement d'un materiau provenant d'un alimenteur a godet Ceased WO2002024350A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001289968A AU2001289968A1 (en) 2000-09-20 2001-09-19 Apparatus for levelling out fluctuation in a material flow supplied from a bucket feeder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20002072A FI110173B (fi) 2000-09-20 2000-09-20 Laite lokerosyöttimestä syötettävän materiaalivirran vaihtelun tasaamiseksi
FI20002072 2000-09-20

Publications (1)

Publication Number Publication Date
WO2002024350A1 true WO2002024350A1 (fr) 2002-03-28

Family

ID=8559121

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2001/000814 Ceased WO2002024350A1 (fr) 2000-09-20 2001-09-19 Appareil permettant de lisser l'ecoulement d'un materiau provenant d'un alimenteur a godet

Country Status (3)

Country Link
AU (1) AU2001289968A1 (fr)
FI (1) FI110173B (fr)
WO (1) WO2002024350A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111014031A (zh) * 2019-12-13 2020-04-17 安徽麦壳科技有限公司 一种吹风式瓜子生产用除杂设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2214434A (en) * 1938-04-21 1940-09-10 Joseph C Nelms Apparatus for cleaning loose materials
DE29901453U1 (de) * 1998-01-26 1999-07-29 Andritz-Patentverwaltungs Ges.M.B.H., Graz Anordnung zur Einteilung von Holzhackschnitzeln in verschiedene Fraktionen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2214434A (en) * 1938-04-21 1940-09-10 Joseph C Nelms Apparatus for cleaning loose materials
DE29901453U1 (de) * 1998-01-26 1999-07-29 Andritz-Patentverwaltungs Ges.M.B.H., Graz Anordnung zur Einteilung von Holzhackschnitzeln in verschiedene Fraktionen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111014031A (zh) * 2019-12-13 2020-04-17 安徽麦壳科技有限公司 一种吹风式瓜子生产用除杂设备
CN111014031B (zh) * 2019-12-13 2021-09-24 安徽麦壳科技有限公司 一种吹风式瓜子生产用除杂设备

Also Published As

Publication number Publication date
AU2001289968A1 (en) 2002-04-02
FI110173B (fi) 2002-12-13
FI20002072A0 (fi) 2000-09-20
FI20002072L (fi) 2002-03-21

Similar Documents

Publication Publication Date Title
CA2420303C (fr) Appareil de triage de copeaux de bois en fractions separees
US5464100A (en) Sorting apparatus in solid waste sorting system
US4089422A (en) Air classifier
EP0067440B1 (fr) Trieur pour céréales, légumineuses et analogues
CA2420301C (fr) Systeme ferme de circulation d'air
US20020175113A1 (en) Method and apparatus for sorting of chips
WO2002024350A1 (fr) Appareil permettant de lisser l'ecoulement d'un materiau provenant d'un alimenteur a godet
CA2420306C (fr) Dispositif permettant de repartir des copeaux de bois en fractions distinctes
US20220362807A1 (en) Air wash abrasive and contaminants separator apparatus
EP1079938B1 (fr) Appareil pour trier des copeaux
SE521016C2 (sv) Förfarande och anordning för att separera träflis i olika fraktioner
US6354440B1 (en) Facility for the selective separation of a stream of mixed bulk materials
WO2002024348A1 (fr) Appareil pour l'optimisation d'un systeme d'alimentation a godets
JP3596995B2 (ja) 風力選別機
JP3492215B2 (ja) 風力選別装置
RU2043162C1 (ru) Шлюз для обогащения полезных ископаемых
WO2002026404A1 (fr) Appareil de triage de copeaux de bois
GB1591650A (en) Air classifier
CN222872739U (zh) V型选粉机
EP0337822A1 (fr) Dispositif de tamisage pour des matériaux en vrac
CN111375543A (zh) V型选粉机
CN87105301A (zh) 在风洞中分离混合物
SU797115A1 (ru) Аппарат дл классификации сыпучих полидисперсных материалов в псевдоожиженном слое
SU906632A1 (ru) Устройство дл сортировки древесной стружки
JP2795806B2 (ja) 風力選別装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ CZ DE DE DK DK DM DZ EC EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP