TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Device: The connection and supporting device (IV) comprises an installation and connection hanging frame (1), a roller rocker (4), a rocker shaft (11), and a flexible cylinder connection bracket (5); where the installation and connection hanging frame (1) is obtained by welding the steel plate, is fixed on the beam of the sludge turning-throwing machine by the welding method, and is connected with the roller rocker (4) by the rocker shaft (11); the roller rocker (4) is obtained by welding the anti-corrosion boiler steel plate; a welding location hole whose size is the same as the outer diameter of the fixed inner roller (14) is remained on the shell of the roller rocker (4); one end of the fixed inner roller (14) is fixedly welded in the welding location hole on the shell of the roller rocker (4) vertically; the axial line of the fixed inner roller (14) is vertical to the surface of the shell of the roller rocker and is concentric with the welding location hole; and the roller rocker (4) is connected with the frame of the sludge turning-throwing machine by the rocker shaft (11) and installation and connection hanging frame (1) fixedly fixed on the frame beam and is connected with the flexible cylinder of the sludge turning-throwing hydraulic system by the flexible cylinder connection bracket (5) fixedly welded on the shell. The turning-throwing device (III) comprises a fixed inner roller (14), a rotary outer roller (19), and turning-throwing blades (6); where the fixed inner roller (14) is made of the anti-corrosion boiler steel plate by the roller welding method according to the length of the turning-throwing motor (12) and turning-throwing reducing brake (13) in the built-in power transmission device (I); one end of the fixed inner roller (14) is vertically welded in the welding location hole on the shell of the roller rocker (4); the axial line of the fixed inner roller (14) is vertical to the surface of the shell of the roller rocker (4) and is concentric with the welding location hole; the rotary outer roller (19) is made of the anti-corrosion boiler steel plate by the roller welding method; the turning-throwing blades (6) are installed on outer wall of the rotary outer roller (19); and the turning-throwing blades (6) are fixed in a certain inclined angle, equal distance, and discontinuous installation in a multi-head spiral manner. The cooling system (V) comprises a refrigerator (2), a base (3) for fixedly installing the refrigerator, a cool air delivering hose, a cool air inlet joint (7), a cooling chamber closed clapboard (9), a power transmission installation cooling chamber (15), a cooling residual gas outlet (16), and a condensate water outlet (8); where the refrigerator (2) is installed above the sludge turning-throwing machine beam and is connected with the frame by the base (3) welded on the frame beam; the cool air delivering hole is installed in the empty chamber of the roller rocker (4); one end is connected with the cool gas output joint on the refrigerator (2); the other end is connected with the cool air inlet joint (7) on the power transmitting device installation cooling chamber (15); the cooling chamber closed clapboard (9) is fixedly installed on two ends of the fixed inner roller (14); the chamber of the fixed inner roller (14) is closed to be a power transmission device installation cooling chamber (15); the refrigerator (2) produces the low-temperature cool air by the refrigeration device and directly sends the cool air to the power transmission device installation cooling chamber (15) to form independent cooling environment in order to exchange heat quantity produced by the turning-throwing motor (12) and turning-throwing reducing brake (13) during the working; the cooling water produced after exchanging the cold and heat quantity in the power transmission device installation cooling chamber (15) is discharged from the condensate water outlet (8) under the power transmission device installation cooling chamber (15); and the residual cool air is discharged by the cooling residual air outlet (16) above the power transmission device installation cooling chamber (15). The power transmission device (I) comprises a turning-throwing motor (12), a turning-throwing reducing brake (13), a roller rotary wheel disk (18), an installation fixed tray (17), and an arc installation connection base; where the turning-throwing motor (12) and turning-throwing reducing brake (13) are fixedly connected in a tight connection manner; the axial lines are concentric; the roller rotary wheel disk (18) is fixedly installed on the power output shaft of the turning-throwing reducing brake (13); and the turning-throwing motor (12) and turning-throwing reducing brake (13) in the power transmission device (I) are fixed in the installation cooling chamber (15) and are fixedly connected with the wall of the fixed inner roller (14) by the installation fixed tray (17). The concentric location device (II) comprises a location wheel disk (22) of the rotary outer roller, a location flange disk (20) of the rotary outer roller, a butting regulating limit stop block (23) of the rotary outer roller, an installation fixed tray (17) of the power transmission device, an arc installation connection base of the rotary wheel disk, and a rotary location ball (10).