| 摘要 |
<p>An apparatus for refining a starting material for paper containing heavy and light foreign substances and an ink material generally comprises a primary chamber having one end opened as a port, a secondary chamber connected coaxially with a contiguously to the other end of the primary chamber on the downstream side thereof, a screen plate interposed between and separating the primary and secondary chambers, the screen plate being provided with through holes such as fine slits, and an impeller disposed in the primary chamber at the central portion thereof near the screen plate and provided with pump-up vanes to be rotated by a driving device to create a swirling motion in the primary chamber. The apparatus further comprises a pipe inserted centrally into said primary chamber through the port formed at the one end portion thereof for feeding the starting paper material to be treated in the primary chamber and a pipe inserted into and coaxially with the starting material feeding pipe for supplying air thereinto to be mixed with the starting material. The primary chamber and the secondary chamber may be of vertical or horizontal orientation.</p> |
