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AssigneePeterson Filters and Engineering Co.
InventorC. Lynn Peterson
Estimating the term…
In mechanical filters, structure is provided for mounting a string-like member in closely spaced relation to its moving filter medium. At least one pick mounted on a rotating shaft is provided for periodically plucking the string-like member so that the string-like member vibrates against the filter medium. A rod mounted perpendicular to the path of movement of the filter medium past the string-like member acts as a guide to prevent the pick from catching the string-like member and controls the vibration of the string-like member in a plane substantially perpendicular to the path of movement of the filter medium thereby to obtain the most effect of the impact. The vibration or slapping of the string-like member against the filter medium causes filter cake formed thereon to be detached therefrom or to be compacted. In a belt-type of drum filter, the string-like member is preferably located between the breaker and discharge rolls.
Apparatus for removing formed filter cake from a moving filter medium, comprising:
In filtration apparatus having a moving filter medium, at least one string-like member extending across a portion of said filter medium, support means for said string-like member holding said string-like member in tension and in closely spaced relation to said filter medium and actuating means for engaging and moving said string-like member relative to said filter medium, and being operable to cyclically contact said string-like member whereby to move said string-like member to an extended portion of increased tension so that upon release said string-like member repetitively forcibly moves toward and intermittently strikes a moving surface on said medium.
In a belt-type filter wherein filter cake is formed on an endless moving belt-like filter medium and discharged from the moving surface of said medium, the invention comprising:
In a drum filter wherein filter cake is formed on filter medium secured around the outer periphery of a rotating filter drum, the improvement of means for discharging filter cake therefrom or compacting said cake comprising:
In a disc filter wherein filter cake is formed on filter medium secured to the front and rear surfaces of a rotating filter disc, the improvement of means for discharging filter cake from the filter medium comprising:
Apparatus for use in discharging formed filter cake on a moving filter medium, comprising:
Dependencies are inferred from the claim text.