• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The pneumatic classifier as disclosed includes a main body, means to produce air circulation in the body, means to feed material to be classified thereto, cylone means to collect the final fine product, hopper means to collect the final coarse product, the classifier including an ejector as primary dispersion means located within the classifier body on a selected reference level, horizontal centrifugal classifier means located above the said reference level, and a secondary dispersion means located below the said reference level, the classifier being arranged to carry out the method steps of:
    公开号:SU938733A3
    申请号:SU762339100
    申请日:1976-03-30
    公开日:1982-06-23
    发明作者:Тапани Хуки Ристо
    申请人:Мурскаусконе Уо(Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a device for continuous pneumatic classification of finely divided bulk materials, according to which the classification process is clearly divided into 5 stages, each of which is carried out under conditions independent of the implementation of another stage with an orientation towards achieving the highest quality, and according to which the named stages are the aggregates form one continuous flowing whole.
    A pneumatic classifier of a passing-through type is known, including a housing with partitions forming 15 zones of action of gravitational and centrifugal forces, devices for feeding material and collecting the final small and final large sandy products, as well as a dispersing device and a device for creating circulation air [l].
    A disadvantage of the known design is the contamination of the sandy> product with small particles.
    The purpose of the invention is to increase the efficiency of the classification process due to better cleaning of the sandy product from fine particles.
    This goal is achieved by providing the classifier with an additional dispersing device installed in the housing under the main dispersing device between the device for feeding material and the zone of gravitational forces.
    In addition, the main dispersing device is made in the form of a housing separated by fixed partitions into the inlet air channel, an inlet channel for supplying material and a mixing channel for supplying powder and air.
    The drawing shows a pneumatic classifier, a vertical section.
    It contains as the main element a housing 1, made in the form of a box, a feeding device 2, providing a powdery supply of 3,938,733 of the 4th material for classification, a cyclone-type collector 3 for a thin product, a hopper 4 for collecting the final coarse-grained product and an air duct 5 "Connecting the cyclone 3 to the fan 6. In the upper front part of the classifier housing there are primary dispersing means 7, in the upper rear part of the housing there is a centrifugal fan 8. Air supply channel 9 Yu, supply channel 10 brabatyvaemogo material and air displacement channel 11 with the cutting material brazuyut collectively ejector.
    The primary dispersion means 15 are located approximately at the reference level formed by the line of intersection of the air supply channel 9 and the material supply channel 10. The ejector exit faces the primary dispersion chamber 12, 20, in which a series of plates 13 are mounted that guide the flow. At the entrance to the air channel 9 is installed - hinge damper 25 14. The centrifugal classifier 8 is made of fixed parts, the main of which are a wide inlet window .. 15, a circular outlet channel 16 for the release of a suspension containing 30 fine product, and relatively more a narrow downward outlet 17 for a coarser intermediate. Channel 16 is tangentially connected to the top of the cyclone 3
    The secondary dispersion means 18 comprises an air channel 19, a funnel-shaped channel 20 for supplying the processed product, a secondary dispersion chamber 21 40 and a channel 22 leading directly to the centrifugal classifier 8. A branch pipe 23 is connected to the main air duct 5 and is connected <5 to the dust extraction system.
    Pneumatic classifier works as follows.
    The material is introduced through the feed channel 2 into the primary dispersion means 7> in which it enters a thin, flat, stream of rapidly moving air leaving channel 9 and mixes with the air in the channel due to the ejection effect.
    Part of the solid material schayasya 55 confining an air suspension with dispersed material, moving at high speed and the guide plate 13 through the inlet channel '15 in the centrifugal classifier 8, of which the most fine particles together with a carrier medium followed by a cyclone 3, coarser particles together with a certain amount of fine fractions as an intermediate product are discharged through the outlet window 17 down into the primary dispersion chamber 12. Thin particles that are not left in the suspension are deposited by weight in the chamber 20, these particles are redispersed by means of secondary dispersion 18, made in the form of an ejector. The resulting suspension is distributed through the chamber 21, from which the fine fractions, together with the carrier medium, are directed upward through the channel 22 to the centrifugal classifier 8, the coarse purified product. The final product settles down and is collected in the hopper 4. The middle fractions are returned from cyclone 3 through air duct 5 to the fan 6 and further in a closed circuit - back to the classification device through an open loading device 2. Dust emission from the loading device 2 to the outside is prevented by removing part of the flow of circulating air, leaving flowing from cyclone 3 to the external dust extraction system through a relative pipe 23 <This ensures a small suction through the loading device of the external air entering together with the processed material. When using a sealed boot device, the need for an external dust removal system is eliminated.
    The pneumatic classifier is most suitable for producing extremely thin materials, such as, for example, supercement, fillers for the paper industry of talc and kaolin, as well as for the production of a wide group of products, generally referred to as micropowders.
    Due to the compactness of the pneumatic classifier, it is possible to install it in parallel or in series under industrial conditions, however, in ordinary industrial conditions it is not necessary to install more than two classifiers in series.
    权利要求:
    Claims (2)
    [1]
    material for classification, cyclone collector 3 for a thin product, a hopper for collecting a finite coarse-dispersed product and an air duct 5 connecting the cyclone 3 with a fan 6. At the top: days: a section of the body of the classifier are located A centrifugal fan 8 is located in the upper part of the casing. The air supply channel 9, the material supply channel 10 and the air displacement channel 11 with the material to be processed combine to form an ejector. The primary dispersing means are located approximately at the reference level formed by the intersection line of the air supply channel 9 and the channel 10 of the material being processed. The outlet of the ejector is facing the primary dispersion chamber 12, in which a row of plates 13 is installed, guiding the flow. At the entrance to the air channel 9 is mounted on a swivel damper T. The centrifugal classifier 8 is made of fixed parts, the main of which are wide inlet casing :. 15, a circular outlet channel 1b for discharging a suspension containing a fine product, and a relatively narrow, downward outlet channel 17 for a coarser intermediate product. Channel 16 is tangentially connected to the upper part of the cyclone 3. The secondary dispersion means 18 contains an air channel 19. funnel-shaped a channel 20 for supplying the product to be processed, a camera 21 for secondary dispersion and a channel 22 leading directly to the centrifugal classifier 8. A branch pipe is connected to the main air duct 5 A conduit 23 associated with a dust removal system. Pneumatic classifier works as follows. The material is introduced through the loading channel 2 into the primary dispersing means 7. in which it enters a thin, flat, stream of fast-moving air coming out of channel 9 and mixed with the air in the channel due to the ejection effect. The part of the solid material held in the air suspension with the dispersed material moves at high speed and is directed by the plates 13 through the inlet channel 15 into the centrifugal classifier 8, from which the thinnest particles along with the carrier medium flow into the cyclone 3, coarser particles together with a certain amount of fine fractions, as an intermediate product is discharged downstream through the outlet port 17 into the chamber 12 of the primary dispersion. Fine particles not remaining in suspension are precipitated by the weight in chamber 20, these particles are re-dispersed by means of secondary dispersion means 18, made in the form of an ejector. The resulting suspension is distributed through the chamber 21, from which the fine fractions along with the carrier medium are directed upward through the channel 22 to the centrifugal classifier 8. Purified coarse. The final product settles down and is collected in the bunker. The middle fractions are returned from the cyclone 3 through the air duct 5 to fan 6 and further in a closed circuit - back to the classification device through an open loading device
    [2]
    2. The discharge of dust from the charging device 2 to the outside is prevented by diverting a portion of the circulating air flow from the cyclone 3 to the external dust removal system through a relative pipe 23. This ensures a small amount of suction through the charging device of the outside air entering together with the material being processed. When using a sealed boot device, the need for an external dust removal system is eliminated. The pneumatic classifier is most suitable for the production of extremely thin materials, such as super cement, fillers for the paper industry of talc and kaolin, as well as for a wide group of products, referred to as micropowders in general. Due to the compactness of the pneumatic classifier, it is possible to install it in parallel or in series under industrial conditions; however, under normal industrial conditions there is no need to install in sequence more than two classifiers. Claim 1. Pneumatic classifier, including body with partitions.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU938733A3|1982-06-23|Pneumatic classifier
    US4153541A|1979-05-08|Method and apparatus for the continuous centrifugal classifying of a continuous flow of particulate material in a deflected flow
    US4299694A|1981-11-10|Method and apparatus for char separation from the discharge materials of an iron oxide reducing kiln
    US4266673A|1981-05-12|Apparatus for classifying dust materials
    US3164548A|1965-01-05|Tower type pneumatic separator
    US4211641A|1980-07-08|Circulating air classifier or separator
    SE430659B|1983-12-05|PROCEDURE AND APPARATUS FOR PNEUMATIC FINE CLASSIFICATION
    GB2038202A|1980-07-23|Dry grinding a granular material
    US4950388A|1990-08-21|Separation of mixtures in a wind tunnel
    US4133749A|1979-01-09|Process of separating solid granular metallurgical products and their precursors and apparatus
    US3524544A|1970-08-18|Milling plant for sifting damp material
    US3972808A|1976-08-03|Pneumatic classifier with particle removal system
    US3615009A|1971-10-26|Classifying system
    GB1253952A|1971-11-17|Air flow separator
    US3426893A|1969-02-11|Method and apparatus for classifying finely-divided solids carried in a gas stream
    US3720307A|1973-03-13|Pneumatic classifier with grating
    US3113099A|1963-12-03|Device for sorting material according to granular size and weight
    CA2019959C|1996-09-10|Method and apparatus for process for processing ground-up mixtures of minerals
    RU1776459C|1992-11-23|Centrifugal separator
    SU797115A1|1986-03-07|Apparatus for screening loose polydisperse materials in fluidized bed
    RU2745140C1|2021-03-22|Grain separation method and device for its implementation
    SU1002051A1|1983-03-07|Air classifier
    SU799838A1|1981-01-30|Apparatus for separating solid materials
    GB1257901A|1971-12-22|
    SU1731297A1|1992-05-07|Pneumatic classifier
    同族专利:
    公开号 | 公开日
    FI54681B|1978-10-31|
    AU4697872A|1974-03-28|
    JPS4862042A|1973-08-30|
    DD103822A5|1974-02-12|
    GB1391892A|1975-04-23|
    BR7206701D0|1973-08-21|
    AU467302B2|1975-11-27|
    CA979849A|1975-12-16|
    US3878091A|1975-04-15|
    FI54681C|1979-02-12|
    AT325538B|1975-10-27|
    CH550026A|1974-06-14|
    NO130383B|1974-08-26|
    ATA822872A|1975-01-15|
    DE2246248A1|1973-04-05|
    SE392048B|1977-03-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1962668A|1931-09-24|1934-06-12|George J Olney|String bean cleaner|
    US2214434A|1938-04-21|1940-09-10|Joseph C Nelms|Apparatus for cleaning loose materials|
    US2381954A|1940-08-03|1945-08-14|Hardinge Harlowe|Classifying system for pulverized materials|
    NL77535C|1951-10-19|
    US2931581A|1955-08-08|1960-04-05|Microcyclomat Co|Precision grinder with forced circulation classifier|
    US2941667A|1957-04-16|1960-06-21|Brown & Williamson Tobacco|Leaf tobacco separator and method|
    US3010576A|1957-12-24|1961-11-28|Hauni Werke Koerber & Co Kg|Apparatus for separating or winnowing tobacco and other like fibrous material|
    US3017993A|1958-12-31|1962-01-23|Aerofall Mills Inc|Air classification system|
    US3738483A|1971-11-08|1973-06-12|Kenzie H Mac|Method of and means for classification of heterogeneous shredded refuse materials|GB1580655A|1977-07-09|1980-12-03|Lappeenrannan Konepaja Oy|Method and apparatus for pneumatic fine classification|
    GB2078553B|1980-07-04|1983-12-21|Larox Ag|Pneumatic classification of finely-divided solids|
    CA1170217A|1981-09-01|1984-07-03|William Prieb|Impetus and countercurrent adjustable slide seedgrader and particle separator|
    US4574045A|1982-02-22|1986-03-04|Crossmore Jr Edward Y|Removal of undesirable substances from finely divided particles|
    US4465194A|1982-12-23|1984-08-14|Universal Leaf Tobacco Co.|Threshed tobacco lead separator|
    FI78241C|1985-05-03|1989-07-10|Larox Ag|Pneumatic grading method and device|
    US4728045A|1987-01-12|1988-03-01|Nelmor Co., Inc.|Method for reclaiming bonded, two-resin articles|
    DK0602557T3|1992-12-18|1997-07-28|Hler Ag B|Feeding Device.|
    US5348163A|1993-01-19|1994-09-20|Cabot Corporation|Method and apparatus for separating fine particles|
    US5800578A|1995-07-27|1998-09-01|Air Conveying Corporation|Air separation system including a tangential separator and a pneumatic relay conveyer|
    US20070023328A1|2005-07-29|2007-02-01|Flora Jonathan J|Recycling horizontal cyclonic segregator for processing harvested nuts and fruits|
    US8016117B2|2009-07-31|2011-09-13|Mac Process Inc.|System and method for eliminating emissions from an air classification device|
    CN104001667A|2014-04-28|2014-08-27|山东西王食品有限公司|Separating device for skin and impurities in corn germs|
    UA111922C2|2015-05-25|2016-06-24|Олена Іванівна Кострубяк|AERODYNAMIC RECIRCULATION BULLING MATERIALS|
    UA116051C2|2016-06-29|2018-01-25|Леонід Васильович Фадєєв|FADEYEV GRAIN INSPIRATOR|
    US10131507B1|2017-07-27|2018-11-20|Mss, Inc.|Ejector hood|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI268371A|FI54681C|1971-09-27|1971-09-27|PNEUMATIC CLASSIFICATION FOR OVERFLOWER FUEL|
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