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    Filtering installation,more particularly for cutting tool cooling liquids
    171.
    发明授权
    Filtering installation,more particularly for cutting tool cooling liquids 失效
    过滤安装，特别适用于切割工具冷却液

    公开(公告)号：US3528551A

    公开(公告)日：1970-09-15

    申请号：US3528551D

    申请日：1968-05-14

    Applicant: SCHLUMBERGER CIE N

    Inventor： HERUBEL JEAN FREDERIC

    IPC: B01D21/00 ,  B01D29/00 ,  B01D29/15 ,  B01D37/00 ,  B01D35/26

    CPC classification number: B01D37/00 ,  B01D21/0012 ,  B01D21/0018 ,  B01D21/0021 ,  B01D21/02 ,  B01D2201/02 ,  B01D2201/265

    Abstract: 1,216,696. Settling and upward flow filtration plant. N. SCHLUMBERGER & CIE. 7 May, 1968 [30 May, 1967]. No. 21510/68. Heading B1D. Liquid (e.g. a dirty machine tool coolant) enters at 12 a settling tank 1, in which heavier particles settle; an inverted bell 2 dips into the settling tank and contains a filter element 13, through which the liquid next passes owing to the suction induced by means 16, 18; finally, the filtrate discharges into a tank 4. As described, filter element 13 is of re-entrant shape and comprises a felt supported by a perforated sheet 31, Fig 2. It can be clamped against a rubber seal 32 by bolt means 34-36. The bell 2 is rockable about pivot supports 2A, 2B, and has a vent valve 41. A pump 7 delivers the filtrate back to the machine tool. Solids are discharged through orifice 28.

    Movable settling filter
    172.
    发明授权
    Movable settling filter 失效
    可移动沉降过滤器

    公开(公告)号：US3363761A

    公开(公告)日：1968-01-16

    申请号：US38223764

    申请日：1964-07-13

    Applicant: SEITZ WERKE GMBH

    Inventor： JOACHIM GROTH ,  HORST BENCKER

    IPC: B01D29/00 ,  B01D29/15 ,  B01D35/00 ,  B01D37/02 ,  C12C7/16 ,  F16H13/14

    CPC classification number: C12C7/165 ,  B01D29/15 ,  B01D29/52 ,  B01D29/60 ,  B01D29/603 ,  B01D29/668 ,  B01D29/925 ,  B01D29/96 ,  B01D35/00 ,  B01D37/02 ,  B01D37/04 ,  B01D2201/265 ,  B01D2201/313 ,  C12C7/16 ,  F16H13/14

    Abstract: A movable deposition filter comprises a filter tank associated with two mixing tanks, all the tanks being connectable selectively through fixed connections, the filter tank being mounted upright near one end of a chassis and the mixing tanks near the other end, all controls and instrumentation being mounted at, and accessible from, this other end of the chassis. One of the mixing tanks is intended to supply filter aid for forming a layer on the filter elements prior to filtration, the other (with agitator) to supply filter aid continuously during filtration. Preferably the valves in the interconnecting piping are arranged in groups -an inlet group, a mixing group and an outlet group. In operation, liquid to fill all the tanks is drawn in through an inlet valve and pumped at (14), Fig. 6 (not shown), through a mixing valve to the filter tank (13) and thence, when full, by overflow to the mixing tanks (11, 12) which are thereafter charged with filter aid. Next, filter aid slurry is withdrawn from mixing tank (11) through an inlet valve by pump (14), discharged into the filter tank (13), and passed therefrom along the filtrate pipe back to the mixing tank (11) in a closed cycle. For the filtration step liquid is drawn in through an inlet valve and mixed in the mixing valve housing with filter aid slurry drawn by a metering pump (15) from tank (12); it then flows through the elements in filter tank (13) to one or two outlet valves. The next stage is backwashing to remove the cake, for which purpose liquid is drawn in through an inlet valve and pumped through a mixing valve communicating with the filtrate side of the elements in tank (13). The cake accumulates at the bottom of the tank. Then the filter tank (13) is partially emptied under pressure by closing all inlet and mixing valves, opening an outlet valve, and admitting gas under pressure through a separate valve to the "unfiltered" space in the tank (13). The liquid is forced up discharge pipes each open at the lower end and extending downward within a filter element nearly to the bottom. The lower part (31) of the filter tank (13) may then be lowered, swung sideways and tipped about pivots to dispose of the residues. Where filtering is not required, liquid may be pumped directly from one or two inlet valves through one of the mixing valves to the exterior, the filter being by-passed and all the outlet valves being closed. Preferably each filter element consists of a hollow perforate cylinder with a closed lower end surrounded by a filter sleeve. The discharge pipe (mentioned above) has an outwardly-directed flange contacting the upper rim of the element so that the filtrate must flow downwards in the element and then up the pipe to reach the filtrate reservoir (32) above the element-supporting plate (34) in the tank (13).

    177.
    发明专利
    未知

    公开(公告)号：NO995186A

    公开(公告)日：1999-11-25

    申请号：NO995186

    申请日：1999-10-25

    Applicant: POUGUS AB

    Inventor： GUSTAFSSON BERNT ,  POUSETTE KURT

    IPC: B01D29/15 ,  B01D35/16 ,  C02F9/00 ,  C02F11/12 ,  B01D29/50

    CPC classification number: C02F11/12 ,  B01D29/15 ,  B01D29/48 ,  B01D29/52 ,  B01D29/92 ,  B01D29/96 ,  B01D35/16 ,  B01D2201/0469 ,  B01D2201/188 ,  B01D2201/26 ,  B01D2201/265 ,  C02F2201/008

    Abstract: A device for dewatering sludge comprises a plurality of screening means (11) that are located at different levels, said screening means comprising hole-provided tube pieces which communicate with a common manifold (12) and through which water may pass in a direction from the outside and inwards, without the solid constituents of the sludge being carried along by the water. When necessary, the screening means may be back-flushed in order to keep them clean, shut-off valves (24) acting between the differently high situated screening means with the purpose of individually interrupting the communication between the manifold (12) and the screening means (11) that land(s) up above the surface (9) of the slurry (8), according as its level sinks during a dewatering operation.

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