| 摘要 |
PROBLEM TO BE SOLVED: To provide a raw material powder blending apparatus which can precisely blend the raw material powder in a short time.SOLUTION: A raw material powder blending apparatus includes a blending mixer 7 having a blending space 7a for a raw material power G weighed by a measuring silo 4, and a blended powder storage silo 10 having a blended powder storage space 10a for a blended powder Gm supplied from the mixer 7. When the raw material powder G is dropped and supplied through a second feed passage 6 from a measurement space 4a to the blending space 7a by a second ventilation passage 15 communicating the measurement space 4a and the blending space 7a, difference in pressure between the measurement space 4a and the blending space 7a is adjusted. Furthermore, when the blende powder Gm is dropped and supplied from the blending space 7a to the blended power storage 10a through a third feed passage 9 by a third ventilation passage 16 communicating the measuring space 7a and the blended powder storage space 10a, difference in pressure between the blending space 7a and the blended powder storage space 10a is adjusted. An inner diameter of a second ventilation passage 15 is larger than that of the third ventilation passage 16. |
