Filtering process and apparatus
OwnerPeter Gabor Kalmaninventor
Life of this patent
Estimating the term…
Abstract
A process and apparatus for filtering substances by introducing a filter band across a passageway through which the substance flows, the filter being passed through inlet and outlet ports sealed to prevent leakage therefrom for example by thermal solidification therein of the substance being filtered or any other suitable sealing substance to form sealing plugs in the ports, and the filter being advanced to locate a fresh part thereof across the passage by supporting the filter upon a reciprocable backing support, moving the backing support in a direction to advance the filter under conditions such that the filter moves with the backing support, and subsequently retracting the backing support under conditions such as to prevent movement of the filter with the backing support.
Claims24
A process for filtering a substance flowing through a passage comprising introducing a filter by passing it through inlet and outlet ports flanking said passage so that a part of the filter extends across said passage, sealing said ports against substantial leakage therethrough of said substance, supporting at least said filter part extending across said passage by means of a filter backing support permeable to flow therethrough of substance filtered by said filter, said filter backing support being reciprocable in the direction of extension of said filter between said ports and across said passage, forcing said substance through said filter to filter the substance, and, when desired, effecting movement of said filter to introduce a fresh part thereof across said passage by moving said backing support in a direction to advance said filter under conditions such that the filter moves with the backing support, and subsequently retracting said backing support under conditions such as to prevent movement of the filter with the backing support.
A filtering device, including;
- a body defining a passage through which a substance to be filtered can be caused to flow and inlet and outlet ports through which a filter can be passed and moved to advance said filter and introduce different parts thereof across said passage, sealing means being provided to limit leakage from said ports;
- a backing support, permeable to flow therethrough of substance filtered by said filter, extending across said passage for supporting said filter thereacross, said backing support being arranged for reciprocating movement in the desired direction of movement of the filter and being sufficiently robust to accept, and move under the action of, forces applied directly thereto to overcome retarding forces encountered in use of the device;
- and means to prevent movement of the filter with the backing support in one direction of movement thereof, but to permit movement of the filter with the backing support in the other direction of movement thereof for advancing the filter.
A filtering device including a body defining a passage through which a substance to be filtered can be caused to flow and inlet and outlet ports through which a filter in the form of a band is passed and can be moved to advance the filter and introduce a different part thereof across said passage, said ports being adapted for the provision thereat of such temperature conditions as to enable the formation therein of sealing plugs of a flowable sealing substance of adequate rigidity to prevent substantial leakage from said ports, means to provide temperature conditions at said ports to form said sealing plugs, a filter carrier extending into at least one of said ports from outside the body of the device, means for reciprocating said filter carrier in the direction of said filter passing through said at least one port, and means to ensure movement of the filter with the filter carrier in one direction of said reciprocating movement of the filter carrier for advancing the filter, but to prevent movement of the filter with the filter carrier in the other direction of movement thereof.
Dependencies are inferred from the claim text.