B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTSSEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL wet separating processes, sorting by processes using fluent material in the same way as liquid B03; combinations of dry separating apparatus with wet separating apparatus B03B; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material B07CIn this subclass any sorting or grading of bulk material or loose articles fit to be handled like bulk material results automatically from the construction of the apparatus and properties of the material, e.g. by a trap opening under an object of a certain minimum weight, by an aperture of graduated size. Sorting of articles is included in so far as the same conditions apply, e.g. sorting of timber by passing it over successively longer openings; the articles may or may not be orientated for the purpose of sorting.The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups: B07B1/32 covered by B07B1/30 In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. B07B1/00 B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like ash-sifters for domestic stoves or ranges F24B15/007 B07B1/005Transportable screening plants B07B1/02Hand screens B07B1/04Stationary flat screens B07B1/06Cone or disc shaped screens B07B1/08Screens rotating within their own plane B07B1/10Screens in the form of endless moving bands B07B1/12Apparatus having only parallel elements B07B1/14Roller screens B07B1/145the material to be screened moving along the axis of the parallel elements B07B1/15using corrugated, grooved or ribbed rollers B07B1/155the rollers having a star shaped cross section B07B1/16the elements being movable and in other than roller form B07B1/18Drum screens B07B1/185provided with exchangeable sieve panels B07B1/20Stationary drums with moving interior agitators B07B1/22Revolving drums B07B1/24with fixed or moving interior agitators B07B1/26with additional axial or radial movement of the drum B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screensGroup B07B1/40 takes precedence over groups B07B1/30 - B07B1/38.
This Note corresponds to IPC Note (1) relating to B07B1/30 - B07B1/40. B07B1/282their jigging movement being a closed or open curvilinear path in a plane perpendicular to the plane of the screen and parrallel or transverse to the direction of conveyance B07B1/284with unbalanced weights B07B1/286with excentric shafts B07B1/288Tumbling screens B07B1/30jigging or moving to-and-fro within their own plane in or approximately in or transverse to the direction of conveyance B07B1/34jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen B07B1/343with mechanical drive elements other than electromagnets B07B1/346with electromagnets B07B1/36jigging or moving to-and-fro in more than one direction B07B1/38oscillating in a circular arc in their own planePlansifters B07B1/40Resonant vibration screens B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens B07B1/44Balancing devices B07B1/46Constructional details of screens in generalCleaning or heating of screens B07B1/4609constructional details of screening surfaces or meshes B07B1/4618Manufacturing of screening surfaces B07B1/4627Repairing of screening surfaces B07B1/4636Regulation of screen apertures B07B1/4645Screening surfaces built up of modular elements B07B1/4654Corrugated Screening surfaces B07B1/4663Multi-layer screening surfaces B07B1/4672Woven meshes B07B1/4681Meshes of intersecting, non-woven, elements B07B1/469Perforated sheet-like material B07B1/48Stretching devices for screens B07B1/485Devices for alternately stretching and sagging screening surfaces B07B1/49stretching more than one screen or screen section by the same or different stretching means B07B1/50Cleaning B07B1/52with brushes or scrapers B07B1/522with brushes B07B1/524the brushes being rotating B07B1/526with scrapers B07B1/528the scrapers being rotating B07B1/54with beating devices B07B1/55with fluid jets B07B1/56Heated screens B07B1/58heated by heated fluid B07B1/60heated by flame heating B07B1/62heated by direct electric heating B07B4/00Separating solids from solids using gas currents B07B4/00Separating solids from solids by subjecting their mixture to gas currents using tables or jigs B03B4/00 B07B4/02while the mixtures fall B07B4/025the material being slingered or fled out horizontally before falling, e.g. by dispersing elements B07B4/04in cascades B07B4/06using revolving drums B07B4/08while the mixtures are supported by sieves, screens, or like mechanical elements B07B7/00Selective separation of solid materials carried by, or dispersed in, gas currents sieves or filters for separating dispersed particles from gases or vapours B01D B07B7/01using gravity B07B7/02by reversal of direction of flow B07B7/04by impingement against baffle separators B07B7/06by impingement against sieves B07B7/08using centrifugal force centrifuges B04B; cyclones B04C B07B7/083generated by rotating vanes, discs, drums, or brushes B07B7/086generated by the winding course of the gas stream B07B7/0865using the coanda effect of the moving gas stream B07B7/10having air recirculating within the apparatus B07B7/12with pulsating air currents B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currentsGeneral arrangement of plant, e.g. flow sheets B07B9/02Combinations of similar or different apparatus for separating solids from solids using gas currents B07B11/00Arrangement of accessories in apparatus for separating solids from solids using gas currents B07B11/02Arrangement of air or material conditioning accessories B07B11/04Control arrangements B07B11/06Feeding or discharging arrangements B07B11/08Cleaning arrangements B07B13/00Other separating, e.g. grading, resulting automatically from the construction of the apparatus used and properties of the material concernedCombinations B07B13/00Grading or sorting solid materials by dry methods, not otherwise provided forSorting articles otherwise than by indirectly controlled devices grading eggs A01K43/04 B07B13/003Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness B07B13/006Sorting molded pieces and runners B07B13/02Apparatus for grading using pockets for taking out particles from aggregates B07B13/04according to size B07B13/05using material mover cooperating with retainer, deflector or discharger B07B13/065 - B07B13/075 take precedence B07B13/065Apparatus for grading or sorting using divergent conveyor belts or cables B07B13/07Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement B07B13/072the openings being rollers with a divergent axis and the material moving substantially along the rollers axis B07B13/075Apparatus comprising moving article - receiving openings, the size of which varies as they move B07B13/08according to weight B07B13/10 takes precedence B07B13/10using momentum effects B07B13/11involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters B07B13/113shaking tables for wet separating B03B5/04; tables with water impulse B03B5/70; pneumatic tables B03B4/02; moving screens B07B1/28 B07B13/116stratification of dry granular material on a continuously travelling surface, e.g. belt conveyor vanner for wet separation B03B5/08 B07B13/14Details or accessories B07B13/16Feed or discharge arrangements B07B13/18Control B07B15/00Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material using wet methods B03B7/00; using gas currents B07B9/00 B07B2201/00 B07B2201/00Details applicable to machines for screening using sieves or gratings B07B2201/02Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces B07B2201/04Multiple deck screening devices comprising one or more superimposed screens B07B2220/00Type of materials being separated B07B2220/02Plastics B07B2220/04Batteries B07B2230/00Specific aspects relating to the whole B07B subclass B07B2230/01Wet separation B07B2230/04The screen or the screened materials being subjected to ultrasonic vibration