| 摘要 |
<p>In the field of pressure filter systems, a method and apparatus for re- generating a diatomaceous earth filter cake of a pressurized liquid filter system in order to solve the problem of down time and one-time only use of the filter material concomitant with prior backflushing methods by liquidizing the diatomaceous earth filter cake formed on filter elements (26) in the filter chamber (18) of the system; by uniformy mixing with the liquidized diatomaceous earth the insoluble particles, or unpurities, removed by the filter cake from liquid that has passed through the cake; and by reforming the fluid cake with the impurities uniformly distributed throughout the filter cake. The liquidizing of the filter cake and impurities and mixing of the diatomaceous earth and impurities result from oscillations induced in the liquid in the filter chamber by several cycles of rapid reversal of the flow of liquid through the filter chamber.</p> |
