| 摘要 |
PURPOSE:To form a feed for raising fish into pellets having a specific fine grain size in one processing apparatus, by connecting a stirring chamber of the feed having stirring blades in a hopper to an extrusion chamber of the feed having an extrusion screw and granulating blades in a cylindrical housing in a specific state. CONSTITUTION:A concave curved surface bottom (b) of a hopper 11 and a convex curved surface tip (t) of a housing 13 are overlapped by a specific height dimension (H) to open and provide a communicating hole 14 of a stirring chamber (A) to an extrusion chamber (S). The cylindrical surface (d) of a feed extrusion screw 33 at the rotating shaft 34 is provided to satisfy a relation so that the surface (d) may be in a position at the same level as the assumed concave curved surface bottom (b) of the hopper 11 or go over the bottom (b) to enter the stirring chamber (A) a little. Thus, the sticking and depositing of the feed on the inner wall surface of the hopper 11 forming the stirring chamber (A) can be prevented.
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