SCREW CONVEYORS FIRE PROTECTION DEVICE (VERSIONS) Russian patent published in 2006 - IPC B65G43/08 F23M11/02 A62C2/00 

FIELD: fire protection.

SUBSTANCE: invention can be used in devices to feed fuel material into charging port of combustion chamber of water boiler furnace. Proposed device contains control unit and electric drive connected with control unit whose output shaft is mechanically coupled with auger screw arranged in casing. According to first design version, device contains additionally electrohydraulic switching device, threshold device, temperature sensor, located on feed end of screw conveyor casing for contact with fuel material signal from which controls, through threshold device, simultaneous operation of electric drive and electrohydraulic switching device, its inlet and outlet hydraulic lines being connected with fire water line and with feed end of casing, respectively. According to second design version, device contains reservoir with working liquid installed on free end of casing, hydraulic cylinder with spring-loaded rod connected by hydraulic line with reservoir, cock whose input is connected by hydraulic line with fire water line and output is connected by hydraulic line with feed end of casing, rod of hydraulic cylinder being mechanically connected with control input of cock.

EFFECT: provision of control of fuel material temperature at feed end of screw conveyor casing to prevent inflammation of fuel material in screw conveyor space.

5 cl, 1 dwg