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公开(公告)号：US3692183A
公开(公告)日：1972-09-19
申请号：US3692183D
申请日：1971-03-08
申请人： VOITH GMBH J M
发明人： TRA JOSEF
CPC分类号： D21D5/06
摘要： The specification discloses a filter, especially for suspensions, in which a cylindrical screen is disposed in a closed housing between a suspension inlet and a suspension outlet so the suspension flows through the screen. Strips, or blades, extending axially along the upstream side of the screen are connected to a rotor for being moved thereby along the screen in the circumferential direction to dislodge filtered out impurities from the screen. The dislodged impurities are removed from the housing via an impurity outlet. To prevent the movement of the strips, or blades, along the screen from developing pressure pulsations of an intensity and/or frequency which could interfere with the formation of a web in a paper making machine supplied by the filter, the strips, or blades, are divided into axial sections which are offset circumferentially relative to each other, while the axial sections at at least one level are nonuniformly circumferentially spaced.
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公开(公告)号：US3497060A
公开(公告)日：1970-02-24
申请号：US3497060D
申请日：1969-02-20
申请人： VOITH GMBH J M
发明人： TRA JOSEF , SCHERZ JOSEF
CPC分类号： B01D21/0012 , B01D21/26 , B01D21/267 , B01D29/114 , B01D29/58 , B01D29/86 , B01D29/908 , B01D29/945 , D21D5/06
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.
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