EP0329865A1 - Partikelabscheider - Google Patents

Partikelabscheider Download PDF

Info

Publication number
EP0329865A1
EP0329865A1 EP88300607A EP88300607A EP0329865A1 EP 0329865 A1 EP0329865 A1 EP 0329865A1 EP 88300607 A EP88300607 A EP 88300607A EP 88300607 A EP88300607 A EP 88300607A EP 0329865 A1 EP0329865 A1 EP 0329865A1
Authority
EP
European Patent Office
Prior art keywords
particulate material
projection
belt
projected
separator
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.)
Withdrawn
Application number
EP88300607A
Other languages
English (en)
French (fr)
Inventor
Reginald Vernon Dutschke
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0329865A1 publication Critical patent/EP0329865A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/10—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices using momentum effects
    • 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
    • B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements

Definitions

  • This invention relates to improvements in particle separators.
  • the invention is not restricted to particulate material separation in the agriculture industry but may be used for any other sort of particulate material for instance separation of minerals from gangue or such like.
  • Australian Patent Specification No 240399 describes "An Apparatus for Classifying Materials" which used acceleration of the particles by means of an air stream and then projection of the particles and associated air stream into a chamber where separation occurs due to differences in velocity of the particles.
  • the use of an air stream even at low velocity induces turbulence and separation can be seriously effected and also an air stream does not accelerate all the particles equally, hence when the particles enter the separation chamber they will not have the same velocity necessarily and hence will not always travel the required distance for efficient separation.
  • the invention is said to reside in a method of separating heterogenous particulate material comprising the steps of accelerating by mechanical means the particulate matter to a fixed speed and projecting the particulate material into air so that particles of different mass or different density within the particulate material are projected different distances and collecting different fractions of the projected material at different distances from the point of projection.
  • the important feature of the present invention is that there is provided a method by which the particulate material is mechanically accelerated to the fixed speed and hence all particles in the stream are travelling at the same speed at the moment of projection.
  • a method by which the particulate material is mechanically accelerated to the fixed speed and hence all particles in the stream are travelling at the same speed at the moment of projection As indicated above, it is known to accelerate such materials in an air stream and then project into void or chamber but this method has the problem that air turbulence caused by the air which is used to accelerate and move the particulate material can cause separation problems.
  • the mechanical means to accelerate the particles may comprise a continuous belt passed over a pair of rollers at least one of which is driven to cause the belt to travel at constant linear speed.
  • the mechanical means may further include at least one idler roller driven by the surface of the belt and with the particulate material being placed on the belt to pass between the idler roller and the belt before being projected.
  • the particulate material on the belt may be smoothed into a substantially uniform layer therefore enabling more particles to be uniformly accelerated.
  • the mechanical means to accelerate the particulate matter may include a pair of pinch rollers between which the particulate material is passed.
  • angle of projection of the particulate material may be varied to alter the characteristics of projection of the particulate material.
  • step of passing a current of air transverse or substantially transverse to the direction of projection of the particulate material to separate therefrom light materials may be further included in the method.
  • chaff and the like may be separated by a gentle air flow transverse to the direction of projection of the particulate matter.
  • Such an air-flow may be up or down or sideways with respect to the direction of projections.
  • Collection of the different fractions at different distances from the point of projection may be achieved by a series of bins or in a series of hoppers at different distances with uppermost facing open mouths to collect the various fractions as they are projected.
  • three fractions may be collected with first and third fractions being of substantially pure concentration of that fraction and the middle fraction being still much of a mixture with this middle fraction being recycled for further separation.
  • the invention may be said to reside in a method of separation of heterogenous particulate material comprising the steps of mechanically accelerating the particulate material and projecting it substantially horizontally or slightly upwards into air and subsequently passing the projected stream of particulate material through a zone of cross current air to remove fine dust, chaff and the like and collecting the projected material other than the dust or chaff in at least one bin arranged in the path of the projected stream.
  • a collection duct before the separated chaff or other light materials.
  • the invention may be said to reside in a heterogenous particulate material separator comprising a mechanical particulate matter projection means and a plurality of collecting receptacles for particulate matter projected by the projections means the receptacles being positioned at variable distances from the projection means.
  • the particulate material projection means may comprise a continuous belt passing over a pair of rollers and onto which belt a stream of particulate material may be directed to be carried on and accelerated by the belt.
  • Such a projection means may also include at least one idler roller driven by the upper surface of the belt and positioned so that the stream of particulate material passes between the idler roller and the belt.
  • An alternative mechanical projection means may comprise a pair of pinch rollers between which the particulate matter is projected.
  • Such a pair of pinch rollers may include resilient peripheral surfaces so that damage to the particulate matter being passed through does not occur.
  • particulate matter separator of the present invention means to provide an air current transverse to the direction of projection of the particulate material.
  • Such an air current transverse to the direction of projection may be vertically up or vertically down in respect to the direction of projection or at a slight angle to the direction of projection and may be used to collect light material s such as dust and chaff from the projected materials.
  • Some form of collecting hood may be provided on the opposite sides of the particulate matter stream to the air-supply means so that dust or chaff or light material can be collected.
  • a single cross current air producing fan which by means of air directors and ducts may be adapted to either direct air down through the stream of projected material or up through the stream of projected material so that depending upon the type of material to be separated efficient dust removal material may be provided.
  • the angle of projection may be varied so that different separations may be obtained for different types of materials.
  • the angle of separation may be anywhere from horizontal to vertical but it is preferable from horizontal to 45 degrees to the horizontal.
  • the collecting receptacles positioned at various distances from the projection means may be provided by a series of baffles positioned at different distances away from the point of projection with the spaces between the baffles comprising the receptacles.
  • the baffles may be varied in longitudinal position and height depending upon the type of material to be separated and the different concentrations of the heterogenous particulate material and also depending upon the rate or speed of projection.
  • the belt may be of substantial width with a thin wide stream of particulate matter placed thereon by means of a chute and with the belt rotating over the series of rollers substantially the same speed of projection will be impassed to all of the particles of material on the belt.
  • particles of greater mass or greater density will be projected further from the point of projection and light materials will be projected a less distance and hence can be separated by spacing collector receptacles at a closer distance.
  • a particulate material separator according to this invention may be incorporated as part of an agricultural harvesting machine such as a combine harvester or may be used a stationary machine for a first stage or later stage seed cleaning.
  • particulate material separator and the method of separating particulate material according to this invention may be used for the separation of chaff and other trash from wheat, barley clover seeds, other cereal seeds, beans and peas and the like or may be used in the mineral separating industry or for instance for purposes such as the cleaning of dried fruit such as sultanas and currants from stalks and the like.
  • the particulate material separator of the present invention comprises generally a projection apparatus 1 and collection region 2.
  • the projection apparatus 1 includes a hopper 3 which provides a thin stream of particulate material onto a continuous belt 4 which passes over rollers 5 and 6 and is maintained in tension by roller 7 which bears onto the top of the belt.
  • the particulate material passes between the roller 7 and the belt on the belt and as the belt is travelling the direction shown by the arrow 8 it is accelerated and moves with the belt at a steady speed until is projected tangentially at the point 9 where the belt 4 passes over the roller 5.
  • the particulate material is projected towards the collection region in a substantially parabolic stream 10 into a series of hoppers 11, 12, 13 and 14.
  • the lightest material travels the shortest distance and falls into hopper 12 while the heaviest material travels the further distance and falls into hopper 14. Intermediate densities or masses fall into hoppers 12 and 13.
  • the hoppers may be emptied continuously or emptied after they fill a certain amount.
  • the projection apparatus in this embodiment includes a continuous belt 20 passing over rollers 21 and 22 but in this embodiment there are two idler rollers 23 and 24.
  • the belt 20 travels in the direction shown by the arrow 25.
  • the angle 26 of projection of the particulate material from the belt 20 as it passes over roller 22 may be varied by means of raising or lowering the idler roller 24 thereby varying the angle of the belt 20 between the roller 24 and the roller 22 and hence the tangential position on the roller 22 at which the particulate material is ejected.
  • FIG. 3 An alternative form of particulate material projector is shown in Fig. 3.
  • This embodiment includes a lower roller 30 and upper roller 31 to form between them a pinch roller arrangement, each of which is covered by resilient peripheral surface 32.
  • a chute 33 directs material onto the upper face of roller 30 just before it pinches against roller 31 and the pinching position between the two rollers determines the tangential angle of projection.
  • Fig. 4 shows the projection apparatus 1 as shown in fig. 1 but includes a centrifugal arrangement 40 which provides a cross-current air flow 41 which is substantially transverse to the direction of projection of particulate matter as shown by the shaded area 42.
  • a collection hood 43 is provided with a duct 44 extending away from the hood to draw light particulate materials such as chaff or dust 50 away from the collection area to prevent contamination of the desired fractions of particulate materials.
  • Fig. 5 shows an alternative embodiment in which the projection apparatus 1 further includes a centrifugal fan apparatus 45 which directs a downwardly directed air flow 46 across the particulate stream 47 and there may be further provided a collection hood 48 to collect dust or chaff or the like 49 collected from the particluate matter stream.
  • a centrifugal fan apparatus 45 which directs a downwardly directed air flow 46 across the particulate stream 47 and there may be further provided a collection hood 48 to collect dust or chaff or the like 49 collected from the particluate matter stream.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP88300607A 1986-08-11 1988-01-26 Partikelabscheider Withdrawn EP0329865A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU76772/87A AU7677287A (en) 1986-08-11 1986-08-11 Improvements in particle separators

Publications (1)

Publication Number Publication Date
EP0329865A1 true EP0329865A1 (de) 1989-08-30

Family

ID=3757584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88300607A Withdrawn EP0329865A1 (de) 1986-08-11 1988-01-26 Partikelabscheider

Country Status (2)

Country Link
EP (1) EP0329865A1 (de)
AU (1) AU7677287A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1414593A2 (de) * 2001-07-05 2004-05-06 Central Manufacturing Company Abgabevorrichtung für komprimierbare materialien und zugehöriges verfahren
WO2011081517A3 (en) * 2009-12-30 2012-03-08 De Sprong B.V. Device and method for sorting waste paper
WO2015194949A1 (en) 2014-06-16 2015-12-23 Codeco Development B.V. Liberation and separation device comprising a rotor and an airflow generator for creating a low pressure zone in a particle contact area of the rotor
CN110523637A (zh) * 2019-09-02 2019-12-03 罗鸿 一种基于持续抖动的大米高效筛选机
WO2023133391A1 (en) * 2022-01-06 2023-07-13 Radcat Research, Llc Heavy mineral harvesting methods and systems

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108435566A (zh) * 2018-03-28 2018-08-24 合肥欣畅源光电科技有限公司 建筑垃圾轻物质分离装置
CN116715028B (zh) * 2023-08-09 2023-10-27 绵阳沃思测控技术有限公司 一种气力输送的吸料斗

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE65620C (de) * J. RlPLINGER - KOERFER in Mettlach, Reg.-Bez. Trier Vorrichtung zum Sortiren von Getreide
FR589236A (fr) * 1924-01-30 1925-05-25 Armand Et Deoune Sa Des Atel Trieur à projection pour le classement des matières solides
FR944137A (fr) * 1946-04-08 1949-03-28 Simon Ltd Henry Procédé et dispositif de séparation des produits de mouture
WO1979000168A1 (en) * 1977-09-30 1979-04-05 Kockums Construction Ab An arrangement in separators for separating chopped harvest material
SU1074612A1 (ru) * 1981-08-03 1984-02-23 Всесоюзное Ордена Трудового Красного Знамени Научно-Производственное Объединение Целлюлозно-Бумажной Промышленности Устройство дл разделени измельченной древесины на фракции
SU1099890A1 (ru) * 1981-06-12 1984-06-30 Головное Специализированное Конструкторское Бюро По Машинам Для Уборки Зерновых Культур И Самоходных Шасси Сепаратор зернового вороха

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE65620C (de) * J. RlPLINGER - KOERFER in Mettlach, Reg.-Bez. Trier Vorrichtung zum Sortiren von Getreide
FR589236A (fr) * 1924-01-30 1925-05-25 Armand Et Deoune Sa Des Atel Trieur à projection pour le classement des matières solides
FR944137A (fr) * 1946-04-08 1949-03-28 Simon Ltd Henry Procédé et dispositif de séparation des produits de mouture
WO1979000168A1 (en) * 1977-09-30 1979-04-05 Kockums Construction Ab An arrangement in separators for separating chopped harvest material
SU1099890A1 (ru) * 1981-06-12 1984-06-30 Головное Специализированное Конструкторское Бюро По Машинам Для Уборки Зерновых Культур И Самоходных Шасси Сепаратор зернового вороха
SU1074612A1 (ru) * 1981-08-03 1984-02-23 Всесоюзное Ордена Трудового Красного Знамени Научно-Производственное Объединение Целлюлозно-Бумажной Промышленности Устройство дл разделени измельченной древесины на фракции

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, week 8442, 28th November 1984, abstract no. 84-261822/42, Derwent Publications Ltd, London, GB; & SU-A-1 074 612 (CELL-PAPER IND. CORP.) 23-02-1984 *
SOVIET INVENTIONS ILLUSTRATED, week 8506, 20th March 1985, abstract no. 85-036730/06, Derwent Publications Ltd, London, GB; & SU-A-1 099 890 (GRAIN HARVEST EQUIP) 30-06-1984 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1414593A2 (de) * 2001-07-05 2004-05-06 Central Manufacturing Company Abgabevorrichtung für komprimierbare materialien und zugehöriges verfahren
EP1414593A4 (de) * 2001-07-05 2004-10-20 Central Mfg Company Abgabevorrichtung für komprimierbare materialien und zugehöriges verfahren
US7073669B2 (en) 2001-07-05 2006-07-11 Central Manufacturing Company Launcher for compressible materials and associated process
WO2011081517A3 (en) * 2009-12-30 2012-03-08 De Sprong B.V. Device and method for sorting waste paper
WO2015194949A1 (en) 2014-06-16 2015-12-23 Codeco Development B.V. Liberation and separation device comprising a rotor and an airflow generator for creating a low pressure zone in a particle contact area of the rotor
CN110523637A (zh) * 2019-09-02 2019-12-03 罗鸿 一种基于持续抖动的大米高效筛选机
WO2023133391A1 (en) * 2022-01-06 2023-07-13 Radcat Research, Llc Heavy mineral harvesting methods and systems

Also Published As

Publication number Publication date
AU7677287A (en) 1988-02-18

Similar Documents

Publication Publication Date Title
US3738483A (en) Method of and means for classification of heterogeneous shredded refuse materials
US5116486A (en) Apparatus and method for separating recyclable waste
US4299694A (en) Method and apparatus for char separation from the discharge materials of an iron oxide reducing kiln
US4194346A (en) Harvest separator
US4851110A (en) Air pump separator method and apparatus
US4051856A (en) Pneumatic rotary classifier
US5366094A (en) Wind tunnel for cleaning and classifying solid particle form material
CN103272776B (zh) 一种风压式三仓风分器
FI76714C (fi) Luftstroemsseparator.
US4950388A (en) Separation of mixtures in a wind tunnel
EP0262124B1 (de) Drehsichter
CA1323860C (en) Vertical-drop grain aspirator
EP0329865A1 (de) Partikelabscheider
EP0361815B1 (de) Verfahren und Vorrichtung zum Trennen von unzulässigen Teilchen aus Tabakmaterial
US3972808A (en) Pneumatic classifier with particle removal system
CN215088760U (zh) 一种基于农产品样品制备的分样装置
Gorial et al. Separation of particles in a horizontal air stream
US20050055736A1 (en) Method and Apparatus for Separating Oil Seeds
CA1218576A (en) Tobacco separator
US2967616A (en) Grain cleaner
EP0065493A1 (de) Vorrichtung zum Sortieren von Kompost
CA3098966A1 (en) Separating device
WO2000056472A1 (en) Device for aerodynamically separating particles
US3110665A (en) Method and apparatus for separating nuts
AU592010B2 (en) Separation of mixtures in a wind tunnel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB GR IT LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): AT DE ES FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900301