摘要:
1,205,354. Fibre-screening apparatus. J. M. VOITH G.m.b.H. 21 Feb., 1969 [22 Feb., 1968; 6 Nov., 1968], No. 8407/69. Heading BID. Liquid, e.g. paper pulp flows through tangential inlet 30 into the space 12 between a screen 15 and housing 10; accept flows out at 31, heavy rejects at 32 and light rejects (e.g. plastics foam) at 33. Screen 15 is cleaned by rotary vanes 27. As described, there is a further screen 16 in series with 15: one screen may be formed with elongated slots and the other with holes; further reject flows out 34. Light rejects are conveyed to outlet 33 by a baffle 36.