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    • 54. 发明专利
    • POWDERY AND GRANULAR MATERIAL FEEDING DEVICE IN SEALED SYSTEM
    • JPH11139562A
    • 1999-05-25
    • JP31906997
    • 1997-11-04
    • KAWASAKI HEAVY IND LTD
    • NOMOTO HIROKIKISHIMOTO MITSUHARUMURATA KENICHIROU
    • B65G53/44B65G53/66B65G65/42
    • PROBLEM TO BE SOLVED: To extremely simplify and miniaturize the structure of a powdery and granular material feeding device, to prevent the device from being enlarged in total height, and to make the device advantageous in installation space and facility cost by forming the powdery and granular material feeding device as a sealed system without providing a special joint such as an expansion joint at a junction between a pressure case and a powdery and granular material feed section and a junction between the pressure case and a feed object section, and providing a transporting means in the pressure case. SOLUTION: A powdery and granular material is stored in the hopper 4 of a powdery and granular material feed section 2, and a delivery section 3 is provided with a pressure case 5 made of a pressure container, a belt conveyor 8 in it, and a weighing mechanism 9 weighing the powdery and granular material being transported by the belt conveyor 8. The powdery and granular material in the hopper 4 is put on the belt conveyor 8 from an inlet port 6 and is fed to a reducing furnace from an outlet port 7. The hopper 4 is provided with a powdery and granular material feed port, a shutoff valve 11, a gas discharge system 20 and an inert gas filling system 25 for gas substitution when the powdery and granular material is fed, a shutoff valve 13, and an inert gas blowing-in system 40 for blowing off the powdery and granular material dropped below the belt conveyor 8 of the pressure case 5 and for purging the internal gas.