Filter diaphragm for a horizontal plate and frame-type filter, such as a tower press
AssigneeMetso Finland Oy
InventorsMirva Mustakangas, Ismo Juvonen, Janne Kaipainen, Teemu Eloranta, Mika Illi, Kari Vänttinen
Life of this patent
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Abstract
A filter diaphragm for a horizontal plate and frame-type filter, such as a tower press, including a sheet like body and at least on a filter plate-facing side thereof, a continuous seal bead. The seal bead includes an inner seal lip on a lateral inside of the seal bead and an outer seal lip surrounding the inner seal lip on a lateral outside of the seal bead. The outer seal lip is elevated from the inner seal lip in a vertical direction perpendicular to a general plane defined by the diaphragm.
Claims16
A filter diaphragm for a horizontal plate and frame-type filter including a filter plate and a plate frame, comprising:
- a sheet like body having a flexible structure, the body having a filter plate-facing side and a plate frame-facing side opposite the filter plate-facing side;
- a continuous seal bead on the filter plate-facing side of the body;
- and
- an attachment bead on a plate frame-facing side of the body, opposite to the filter plate-facing side, the attachment bead for attaching the diaphragm to a correspondingly shaped groove formed on the plate frame,
- wherein the seal bead delimits a planar central portion of the diaphragm on a lateral inside thereof, a lateral outside of the diaphragm being defined on a side of the seal bead opposite to the lateral inside,
- wherein the seal bead comprises an inner seal lip on a lateral inside of the seal bead and an outer seal lip surrounding the inner seal lip on a lateral outside of the seal bead, wherein the inner seal lip and the outer seal lip are configured to engage the filter plate,
- wherein the outer seal lip is elevated from the inner seal lip in a vertical direction perpendicular to a general plane defined by the diaphragm.
Dependencies are inferred from the claim text.