Vertical screw-press filtration device
2014
This vertical screw-press filtration device is provided with: cylindrical or conical inner and outer filter body (1, 2) centered on an axis line (O) extending vertically; and a ribbon screw (11) that forms a helical shape twisted around the axis line (O), is housed between the inner and outer filter bodies (1, 2), and is rotated around the axis line (O). The inner filter body (1) is affixed in a manner so as to be supported suspended from the top end in the axis line (O) direction by an inner filtration support body (6) provided with an inner cylinder (6A) of which the outer peripheral surface forms a cylindrical surface centered on the axis line (O), the ribbon screw (11) is supported suspended from the top end in the axis line (O) direction in a manner able to rotate around the axis line (O) by a screw support body (12) provided with an outer cylinder (12A) of which the inner peripheral surface forms a cylindrical surface centered on the axis line (O) and is slidably fitted at the outer periphery of the inner cylinder (6A), and as a result, a rise in filtering space (S) is suppressed and the concentricity of the ribbon screw (11), the assembly precision, and the support rigidity at the top can be sufficiently secured.
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