To facilitate cleaning at the inside by making dismantling of a screw feeder easy and to reduce manufacturing costs.
This screw feeder 1 is provided with a clamp 9 formed integrally with a driven part side plate 4 and projected in an axial direction and a powder and granular body discharging direction, a powder and granular body discharge port 10 which passes through a center part of the driven part side plate 4 and the clamp 9 and is communicated with a powder and granular body transportation chamber 6 and a casing 11 fitted and inserted into the powder and granular body discharge port 10. The clamp 9 has a slit 13 formed in an axis direction on an annular ring member 12, is provided with a female screw hole 12a passed through the ring member 12 by being orthogonally crossed with the slit 13 and a fastening bolt 14 screwed into the female screw hole 12a and is capable of attachably/detachably fixing the casing 11. By fastening and loosening the fastening bolt 14, the casing 11 is attached/detached to/from the clamp 9.
YAMAMOTO NOBORU
KAMIMURA SHINSAKU
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