| 摘要 |
<p>A tumbler assembly for mixing, storing and feeding particulate materials and for transferring heat between different materials which includes a tumbler having a lower portion in the form of a hollow inverted lower cone enclosed by a circular cover. The cover has an axial inlet and the cone has an axial outlet. The tumbler is rotatably supported with its axis inclined at an angle of 30 DEG to 75 DEG with respect to the horizontal, the tumbler having driving means for rotating the same at a speed within the range of a fraction of a revolution per minute up to several revolutions per minute. The cone has an included angle within the range of 80 DEG to 135 DEG . The outlet is restricted to control the rate of flow so that a body of material is maintained in the tumbler, the material being constantly mixed by cascading of material across the surface of the body and movement of material within the body as the material is withdrawn along a multiplicity of paths which, by reason of the conical shape and inclined axis, precess orbitally through the mass. In an alternate embodiment, the body of material completely fills the tumbler and the mixing occurs primarily within the interior of the body.</p> |
