| 摘要 |
PCT No. PCT/SU86/00138 Sec. 371 Date Jul. 28, 1987 Sec. 102(e) Date Jul. 28, 1987 PCT Filed Dec. 12, 1986 PCT Pub. No. WO87/03824 PCT Pub. Date Jul. 2, 1987.A batch-action apparatus for filtering a fluid medium comprises a hermetically sealed housing (1) communicating with systems (9, 10 and 11) for feeding the fluid medium, discharging the clean medium, and evacuating filter cake. The housing (1) accommodates a flexible filter hose (2) one end (4) of which is turned inside out and attached to the housing (1), whereas the other end (7) thereof is connected to a hoisting mechanism (3) acting to move the hose (2) relative to the fixed end (4) of this hose. The end (4) of the hose (2) turned inside out forms an annular cavity (8) to which the fluid medium is fed and which varies in volume under the action of filter cake build-up or in response to the movement executed by the hoisting mechanism (3). |
