| 摘要 |
<p>1,099,250. Filter; liquid separation of solids. CANADIAN INGERSOLL-RAND CO. Ltd. Dec. 23, 1966 [Dec. 27, 1965], No. 57759/66. Heading B1D. A pressure screening apparatus for screening a liquid paper pulp mixture of acceptable fibre and debris comprises a rotary cylindrical wall member 24 with projections 56, a perforated cylindrical screen 12 in spaced relation around member 24 to form a screening zone 60 defined by member 24 and screen 12 through which the liquid mixture can pass while rejecting debris, an inlet 8 for feeding the liquid mixture to the screening zone, an outlet 20 for discharging rejected material from the screening zone, and conduits 62, 63, 64 (e.g. greater than or equal to 1" diam.) for discharging dilution liquid into the screening zone, said conduits having discharge openings projecting through the screen and facing rotary wall member 24, and said discharge opening being located intermediate said inlet and outlet. Filtered liquid leaves at 16. A gutter trap 9 communicates with the inlet gutter 6 for removing heavy debris or chips thrown to the periphery by centrifugal force as the liquid mixture enters the apparatus through inlet 8, and the remaining mixture then passes over baffle 10 into the screening zone 60. The embodiment of Fig. 6 (not shown) has a flat circular screen (12') and a dish shaped rotary wall member (60'). Electric motor 34 is capable of rotating wall member 24 at a surface speed of 6,000 f.p.m. when the apparatus is full of liquid.</p> |
