Reverse flushing filter device

Details Reverse flushing filter device Reverse flushing filter device

B - Operations, Transporting

01

D

182/87

B01D 29/15 (2006.01)

Patent

CA 1144871

ABSTRACT A reverse flushing filter device having a housing with an inlet and an outlet and an intermediate depending part; a cylindrical element is located in the intermediate part in spaced relationship therefrom to provide a channel communicating with the inlet, with the interior of the filter element communica- ting with the outlet, the normal flow being from the inlet, into the channel, through the filter element and then to the outlet. First valve means are provided to close the normal flow. A spraying device is located inside the filter element in spaced relationship therefrom, the device being adapted to rotate during reverse flushing flow. Second valve means are provided which is openable on closure of the first valve means, to permit liquid to flow from the inlet into the spraying device. Third valve means are provided which is open during normal flow but closable on opening of the second valve means to prevent flow through the opened second valve means into the outlet and thereby directing fluid from the spraying device in reverse flushing flow against the interior of the filter element to flush material therefrom.

350734

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