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23 条记录 (耗时 0.015 秒)

    Pulp strainer
    1.
    发明授权
    Pulp strainer 失效
    脉冲过滤器

    公开(公告)号：US3557583A

    公开(公告)日：1971-01-26

    申请号：US3557583D

    申请日：1968-09-10

    申请人： IMPROVED MACHINERY INC

    发明人： RICH JOHN P ,  CARLSMITH LAWRENCE A

    IPC分类号： B01D29/00 ,  D21F1/66 ,  D21C9/06

    CPC分类号： D21F1/66

    摘要： AN APPARATUS FOR FILTERING PULP FROM A LIQUID SUSPENSION INCLUDING FEEDING THE SUSPENSION OF PULP BETWEEN A PAIR OF SPACED SCREENS AND APPLYING PRESSURE IMPULSES TO THE SCREENS TO PROGRESSIVELY PROPEL THE PULP MAT ACROSS THE SCREENS WHILE THE LIQUID FILTRATE DRAINS THROUGH THE SCREENS. MEANS FOR CREATING THE PRESSURE PULSES INCLUDE

    VARYING THE VOLUME OF CHAMBERS BEHIND THE SCREENS AND INTERMITTENTLY CONNECTING A PUMP TO THE CHAMBERS BEHIND THE SCREENS.

    Pipeline thickener
    9.
    发明授权
    Pipeline thickener 失效
    管道加厚机

    公开(公告)号：US3452875A

    公开(公告)日：1969-07-01

    申请号：US3452875D

    申请日：1967-12-29

    申请人： IMPROVED MACHINERY INC

    发明人： RICH JOHN P ,  CARLSMITH LAWRENCE ALLAN

    IPC分类号： B01D33/073 ,  B01D35/22

    CPC分类号： B01D33/073 ,  B01D33/48 ,  B01D33/506 ,  B01D33/742 ,  B01D2201/282 ,  B01D2201/287

    摘要： 1,211,765. Filter. IMPROVED MACHINERY Inc. 9 Dec., 1968 [29 Dec., 1967], No. 58330/68. Heading B1D. A filter, for thickening wood pulp suspension, comprises a cylindrical perforate drum 11, located in a housing having an inlet 7 and an outlet 8 upstream of the drum and a filtrate outlet 9 downstream, the drum being cleaned by relatively rotating means which induces reverse flow and is followed by means which limits subsequent filtrate flow, to prevent immediate re-clogging of newly cleaned drum surface. In Fig. 2, drum 11 rotates, together with radial partitions 30 which divide its downstream surface, an arcuate baffle wall 24, pivoted at 26 and adjusted at 27, creates reverse flow adjacent outlet 8 by virtue of the drum and baffle wall 24 converging in the direction of drum rotation. A similar baffle wall 34, adjacent inlet 7, diverges from the drum to limit filtrate flow adjacent the inlet. The annular space 42, 10 outside the drum increases in width from inlet 7 to outlet 8 and is so dimensioned that incoming liquid in portion 42 assumes the same peripheral speed as the drum. This construction could be reversed, with outward flow of filtrate through the drum, and partitions 30 and baffle walls 24, 34 located outside the drum. In Figs. 3, 4 (not shown) the drum is fixed, filters by inward flow, and encloses a pair of rotary baffles (83), each of which has a leading portion converging towards the drum, to induce reverse flow cleanings, and a trailing portion diverging from the drum, to limit subsequent filtrate flow. Liquid flow round the outside of the screen may be in the same direction as or opposed to the baffle rotation, openings (85, 86) each serving as inlet or thickened suspension outlet. The baffle 23 in Fig. 2 could be replaced by a nozzle directing reverse flow liquid on to the screen, or both baffles 23, 33 could be replaced by a roller rotating about an axis parallel to that of the drum and having axial slots engaging partitions 30.