Page 361 - Chemical Process Equipment - Selection and Design

324 SOLID-LIQUID SEPARATION

Cloth Plate 7
Frame
Mixture
or wash -
inlet

Head

-Filter cloths Filtrate outlets
(a)

Flltrofe discharge)
manifold

(C)

Figure 11.10. Pressure filters for primarily discontinuous operation. (a) Classic plate-and-frame filter press and details; the plates are
separated for manual removal of the cake (T. Shriver Co.). (b) Horizontal plate filter; for cleaning, the head is removed and the plates are
lifted out of the vessel (Sparkler Mfg. Co.). (c) Pressure leaf filter; the leaf assembly is removed from the shell and the cake is scraped off
without separating the leaves (Ametek Znc.). (d) The Kelly filter has longitudinal leaves mounted on a carnage; for cleaning, the assembly is
slid out of the shell (Oliver United Filters). (e) The Sweetland filter has circular leaves and a split casing; the lower half of the casing is
dropped to allow access for removal of the cake (Oliver United Filters). (f) The Vallez filter has circular leaves rotating at about 1 rpm to
promote cake uniformity when the solids have a wide size range; removal of blown-back or washed back cake is accomplished with a built-in
screw conveyor without requiring the shell to be opened (Godin-Birmingham Co.).