GB1398036A - Circulatory air sifter - Google Patents

Circulatory air sifter

Info

Publication number
GB1398036A
GB1398036A GB2431073A GB2431073A GB1398036A GB 1398036 A GB1398036 A GB 1398036A GB 2431073 A GB2431073 A GB 2431073A GB 2431073 A GB2431073 A GB 2431073A GB 1398036 A GB1398036 A GB 1398036A
Authority
GB
United Kingdom
Prior art keywords
chamber
air
fine material
sifter
coarse
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
Application number
GB2431073A
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius AG
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 Polysius AG filed Critical Polysius AG
Publication of GB1398036A publication Critical patent/GB1398036A/en
Expired 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
    • 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
    • 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
    • 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
    • B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling

Abstract

1398036 Air sifter POLYSIUS AG 22 May 1973 [21 July 1972] 24310/73 Headings B2H and B2P A vertically disposed circulatory air sifter comprises a central sifting chamber 1, for separation of coarse from fine material by sifting air, substantially separated by a cylindrical wall 2 of an inner housing from an annular outer chamber 5, for separation of fine material from sifting air circulating therethrough, which is itself surrounded by a cylindrical wall 6 of an outer housing; a circulatory fan 14 disposed above the chamber 1 on central vertical drive shaft 10 and effective to draw air upwardly through the chamber 1 and into the chamber 5 where the air flows downwardly before re-entering the chamber 1; an air outlet connection 20 in the lower part of the sifter; and one or more cooling air feed connections 16, 16' arranged to direct the incoming cooling air tangentially into the chamber 5 so that the direction of flow of the incoming cooling air is generally the same as the direction of the flow of the air circulating through the annular chamber 5. The mixture of coarse and fine materials to be sifted is fed through a supply pipe 12 on to a spreader plate 9 which is mounted on the shaft 10 and which flings the mixture across the chamber 1 where air, circulated by fan 14 (arrow 21) and entering the chamber through guide vanes 3 entrains the fine material towards the fan. The latter imparts a helical downward rotation to the airfine material mixture through the chamber 5, this rotation being reinforced by cooling air for the fine material supplied via the pipes 16, 16'. The fine material is thereby separated from the air and is removed at 8'. A fraction of the air is extracted via a downwardly open annular chamber 19 and the pipe 20. The coarse material falls by gravity towards an outlet 4'. The pipes 16, 16' may be replaced by a shutter louvre at the periphery of the cylindrical wall of the outer chamber 5.
GB2431073A 1972-07-21 1973-05-22 Circulatory air sifter Expired GB1398036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2235789A DE2235789C3 (en) 1972-07-21 1972-07-21 Vertical-axis circulating air wind sifter

Publications (1)

Publication Number Publication Date
GB1398036A true GB1398036A (en) 1975-06-18

Family

ID=5851255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2431073A Expired GB1398036A (en) 1972-07-21 1973-05-22 Circulatory air sifter

Country Status (7)

Country Link
US (1) US3901794A (en)
JP (1) JPS4952361A (en)
AT (1) AT323676B (en)
DE (1) DE2235789C3 (en)
FR (1) FR2193639B1 (en)
GB (1) GB1398036A (en)
IT (1) IT991037B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409097A (en) * 1981-10-16 1983-10-11 Omya Gmbh Improved pivotable centrifugal classifier and method of classifying
US4390419A (en) * 1981-10-16 1983-06-28 Omya Gmbh Centrifugal classifier
EP0298914B1 (en) * 1987-07-03 1991-10-30 Ciba-Geigy Ag Spray dryer for making powder agglomerates or the like
JPS6430683A (en) * 1987-07-24 1989-02-01 Nippon Oxygen Co Ltd Air-force selector
DE3900779A1 (en) * 1989-01-12 1990-07-19 Krupp Polysius Ag SAFE
ES2135081T3 (en) * 1994-09-08 1999-10-16 Schlattl Werner Bavaria Tech DEVICE FOR THE SEPARATION OF OIL AND / OR SOIL AND / OR FOREIGN SUBSTANCES CONTAINED IN AN AIR, GAS AND / OR VAPOR CURRENT.
DE10010406A1 (en) * 2000-03-03 2001-09-06 Kloeckner Humboldt Wedag Process and plant for the two-stage screening of granular material
US6739456B2 (en) 2002-06-03 2004-05-25 University Of Florida Research Foundation, Inc. Apparatus and methods for separating particles
US20050242008A1 (en) * 2004-04-29 2005-11-03 Peter Simpson Material classifier
ITMI20082295A1 (en) * 2008-12-22 2010-06-23 Project And Dev Llc AERAULIC SEPARATOR
CN112452750B (en) * 2020-10-29 2021-09-03 南京图治自动化科技有限公司 Heavy foreign matter removing device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1273257A (en) * 1916-10-26 1918-07-23 Schroeder Headlight & Generator Company Fluid-turbine.
US1509915A (en) * 1922-11-09 1924-09-30 Albert H Stebbins Concentrator
US2890764A (en) * 1953-12-07 1959-06-16 Gerald D Arnold Method and apparatus for centrifugal separation with uni-directional flow at the point of separation
DE1197587B (en) * 1960-10-08 1965-07-29 Hans Rieth Process for preparing or cooling molding sand
US3349548A (en) * 1964-01-22 1967-10-31 C C Ind Cyclone separator for separating steam from water
US3358844A (en) * 1965-08-17 1967-12-19 Siemens Ag Device for increasing the total amount of separation of a vortex separator
DE1757819B1 (en) * 1968-06-19 1972-02-03 Polysius Ag Air separator
DE1903743A1 (en) * 1969-01-25 1970-08-13 Westfalia Dinnendahl Groeppel Circulating air separator
DE1910501C3 (en) * 1969-03-01 1980-01-31 Paul 4000 Duesseldorf Bernutat Circulating air classifier

Also Published As

Publication number Publication date
DE2235789C3 (en) 1974-12-12
AT323676B (en) 1975-07-25
DE2235789A1 (en) 1974-02-07
FR2193639A1 (en) 1974-02-22
FR2193639B1 (en) 1978-07-21
DE2235789B2 (en) 1974-05-09
US3901794A (en) 1975-08-26
IT991037B (en) 1975-07-30
JPS4952361A (en) 1974-05-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees