F23HGRATES inlets for fluidisation air for fluidised bed combustion apparatus F23C10/20CLEANING OR RAKING GRATESIn this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. F23H1/00 F23H1/00Grates with solid bars double grates F23H5/00 F23H1/02having provision for air supply or air preheating, e.g. air-supply or blast fittings which form a part of the grate structure or serve as supports F23H1/04having a variable burning surface F23H1/06having bars at different levels F23H1/08Vertical grates F23H3/00Grates with hollow bars F23H3/02internally cooled F23H3/04externally cooled, e.g. with water, steam or air F23H5/00Double grates F23H7/00Inclined or stepped grates inclined travelling grates F23H11/12 F23H7/02with fixed bars F23H7/04in parallel disposition F23H7/06with movable bars disposed parallel to direction of fuel feeding F23H7/08reciprocating along their axes F23H7/10rocking about their axes F23H7/12with movable bars disposed transversely to direction of fuel feeding F23H7/14reciprocating along their axis F23H7/16rocking about their axes F23H7/18reciprocating in an upward direction F23H9/00Revolving-gratesRocking or shaking grates inclined grates F23H7/00 F23H9/02Revolving cylindrical grates F23H9/04Grates rocked as a whole F23H9/06the bars being rocked about axes transverse to their lengths F23H9/08the bars being rocked about their longitudinal axes inclined grates with movable bars disposed parallel to the direction of fuel feeding and rocking about their axes F23H7/10 F23H9/10and modified to move fuel along the grate F23H9/12the bars being vertically movable in a plane F23H11/00Travelling-grates F23H11/02with the bars disposed on transverse bearers F23H11/04with the bars pivoted at one side F23H11/06with the bars movable relatively to one another F23H11/08with several individually-movable grate surfaces F23H11/10with special provision for supply of air from below and for controlling air supply F23H11/12inclined travelling gratesStepped travelling grates F23H11/14serving as auxiliary grates F23H11/16for multi-layer stoking F23H11/18Details F23H11/20Driving-means F23H11/22Moving fuel along grateCleaning of grate F23H11/24Removal of ashesRemoval of clinker F23H11/26by dumping F23H11/28Replaceable burning-surface F23H13/00Grates not covered by any of groups F23H1/00-F23H11/00 F23H13/02Basket grates, e.g. with shaking arrangement F23H13/04Telescoping grates F23H13/06Dumping grates F23H13/08Grates specially adapted for gas generators and also applicable to furnaces F23H15/00Cleaning arrangements for grates not forming part of the grate F23J1/00Moving fuel along grates grates with bars rocked about their longitudinal axes and specially adapted for moving fuel along the grate F23H9/10; for travelling-grates F23H11/22 F23H17/00Details of grates F23H17/02End fittings on bars F23H17/04of travelling-grates F23H17/06Provision for vertical adjustment of grate F23H17/08BearersFramesSpacersSupports F23H17/10Dead platesImperforate fuel supports F23H17/12Fire-bars F23H2700/00 F23H2700/00Grates characterised by special features or applications F23H2700/001Grates specially adapted for steam boilers F23H2700/002Inclined grates with longitudinally movable gratebars F23H2700/003Stepped grates with rotatable or slidable gratebars F23H2700/004Rotary grates with horizontal axis F23H2700/005Rotary grates with vertical axis F23H2700/006Grates of basket-type F23H2700/007Basket grates with shaking arrangement F23H2700/008Mobile grates F23H2700/009Grates specially adapted for incinerators F23H2900/00Special features of combustion grates F23H2900/03021Liquid cooled grates F23H2900/09041Vibrating grates for solid fuels specially adapted for incinerators F23G2203/107 F23H2900/17001Specific materials therefor F23H2900/17002Detachable or removable worn-out parts