Filter apparatus and filter element therefor
OwnerHans Mullerinventor
Life of this patent
Estimating the term…
Abstract
A filter element for a filter apparatus comprises a rigid support plate on at least one side of which is spanned a generally square filter cloth. This filter cloth may be formed as a pair of panels joined permanently together on three sides so as to form a pocket and having a fourth side which can be closed by a clamp or the like. The support is slipped into the pocket and a plurality of such filter elements are spaced along a rotatable hollow shaft centered in a filter chamber to which a solution to be filtered is fed. During operation the filtrate is pumped out of the hollow shaft through the filter cloth on which filter cake deposits. For cleaning of the cloth the shaft is rotated and the filter cake is washed off with a liquid spray.
Claims14
A filtering apparatus comprising:
- a cylindrical housing having a horizontal central axis and defining a closed chamber;
- means for introducing a liquid carrying particles into said chamber;
- a hollow elongated shaft in said chamber;
- a plurality of laterally extending arms on said shaft provided with rollers riding on the inside of said housing;
- a plurality of generally square and rigid filter supports fixed and spaced longitudinally on said shaft with same passing generally centrally through said supports;
- a respective pocket of filter cloth completely and snugly surrounding each of said filter supports, each pocket being formed of a pair of juxtaposed and coextensive generally square filter-cloth panels having three sides permanently joined together and a fourth open side, said shaft passing generally centrally through said pockets;
- openable means at each of said pockets joining the respective fourth sides together for forming a filter interior inside each of said pockets, said shaft opening transversely into said interiors;
- means for withdrawing liquid from inside said shaft and thereby from said interiors, whereby said particles form filter cake on said panels;
- means for rotating said shaft, said supports, said pockets, said arms, and said openable means jointly;
- and
- means for spraying a rinse liquid on said pockets during rotation thereof for washing off said filter cake.
A filtering apparatus comprising:
- a cylindrical housing having a horizontal central axis and defining a closed chamber;
- means for introducing a liquid carrying particles into said chamber;
- a hollow elongated and horizontal shaft in said chamber;
- a plurality of laterally extending arms on said shaft provided with rollers riding on the inside of said housing;
- a plurality of generally square and rigid upright filter plates fixed and spaced horizontally on said shaft with same passing generally centrally through said plates, each plate being fluid impervious and having two faces;
- a respective generally square panel of filter cloth covering at least one face of each of said plates;
- means for securing the edges of each of said panels to the edges of the respective plate and thereby forming a filter interior between each of said panels and the respective plate, said shaft passing generally centrally through said panels;
- means for draining of liquid from inside said shaft and thereby from said interiors, whereby said particles form filter cake on said panels;
- means for rotating said shaft, said arms, said plates, said panels, and said openable means jointly;
- and
- means for spraying a rinse liquid on said pockets during rotation thereof for washing off said filter cake.
Dependencies are inferred from the claim text.