US 12,458,910 B2
Filter plate frame assembly, a horizontal filter press, such as a tower press, having such a plate frame assembly, and a method of replacing worn components of horizontal filter press
Mirva Mustakangas, Pirkkala (FI); Ismo Juvonen, Rauha (FI); Janne Kaipainen, Halsua (FI); Teemu Eloranta, Luumäki (FI); Mika Illi, Vantaa (FI); and Kari Vänttinen, Espoo (FI)
Assigned to METSO FINLAND OY, Espoo (FI)
Appl. No. 17/792,853
Filed by Metso Finland Oy, Espoo (FI)
PCT Filed Apr. 17, 2020, PCT No. PCT/FI2020/050256
§ 371(c)(1), (2) Date Jul. 14, 2022,
PCT Pub. No. WO2021/209681, PCT Pub. Date Oct. 21, 2021.
Prior Publication US 2023/0023076 A1, Jan. 26, 2023
Int. Cl. B01D 25/21 (2006.01); B01D 25/164 (2006.01); B01D 25/28 (2006.01)
CPC B01D 25/215 (2013.01) [B01D 25/164 (2013.01); B01D 25/281 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A filter plate frame assembly for a horizontal filter press, comprising:
a rigid filter plate frame having a first frame flank and an opposing second frame flank parallel to the first frame flank, and a first frame end and an opposing second frame end parallel with the first frame end, wherein the frame flanks and frame ends of the filter frame define a closed periphery; and
a subframe nested within and laterally delimited by the filter plate frame, wherein the subframe has a central opening having a closed area that is configured to define a lateral boundary of an associated filter chamber, when in use,
wherein either or both of the first frame end and the second frame end is an openable frame end, and
wherein the subframe is receivable into, and respectively, removable out from the filter plate frame via the openable frame end,
wherein the subframe is secured within the filter plate frame when the openable frame end is closed,
wherein the filter plate frame comprises a first bearing surface opening towards a plate side of the filter plate frame assembly and running at least along both the first frame flank and the second frame flank,
wherein the subframe comprises a second bearing surface opening towards the chamber side of the filter plate frame assembly, and
the filter plate subframe is supported on and slidable along the first bearing surface at the second bearing surface.