# US 2010/0163476 A1 · Filter device

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- Number: US 2010/0163476 A1
- Document ID: US20100163476A1
- Status: Published application
- Kind: A1
- Application number: 12/592,995
- Filed: 2009-12-07
- Published: 2010-07-01
- Earliest claimed: 2007-06-08
- Assignees: Larox Oyj
- Inventors: Heinz Bonn
- Web page: https://patentgrep.com/patent/US20100163476A1

## CPC

- B01D 25/215: {Construction of the filter plates, frames}
- B01D 25/285: {by compression using inflatable membranes}
- B01D 25/305: {for discharging filtrate}
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

The invention relates to a filter device comprising at least one filter chamber (7) configured between a chamber side (5) and a membrane side (6) of two parallel filter plates (1) and divided through two filter cloths (4), the membrane sides (6) of the two filter plates (1) each comprising a membrane (3), an outlet (8), and a deviation element (12) attached to the outlet (8) and penetrating the membrane (3). When the filter device is closed, a suspension containing a solid substance can be inducted between the filter cloths (4) in such a way that a filtrate penetrates the filter cloths (4) on the chamber side (5) and on the membrane side (6), while the solid substance is deposited in a filter cake on the filter cloths (4). The filtrate flows initially substantially parallel to the filter cloth (4) towards the outlet (8), is deviated through the deviation element (12) in an outlet direction (9) perpendicular to the filter cloth (4), and flows out through the outlet (8). When the filter device is open, the filter plates (1) are at a distance from each other, so that the filter cloths (4) with the filter cake can be removed from the filter chamber (7). In order to avoid loss of tightness of the filter device, a sealing edge (16) of the deviation element (12) is flush with the membrane in a sealing manner.

## Claims

### Claim 1

A filter device comprising:
at least one filter chamber arranged between a chamber side and a membrane side of two parallel filter plates and divided by two filter cloths,
wherein
the membrane sides of the two parallel filter plates each comprise a membrane, an outlet and a deviation element attached to the outlet and penetrating the membrane,
when the filter device is closed, a suspension containing a solid substance can be introduced between the filter cloths in such a way that a filtrate penetrates the two filter cloths towards the chamber side and towards the membrane side, while the solid substance is deposited in a filter cake on the two filter cloths, the filtrate flows first substantially parallel to the two filter cloths towards the outlet, is deviated by the deviation element in an outflow direction perpendicular to the two filter cloths, and flows through the outlet, and
when the filter device is open, the filter plates are at a distance from each other such that the filter cloths can be removed with the filter cake from the filter chamber,
wherein the deviation element is arranged self-locking in the outlet and a spout of the deviation element is fitted into the outlet.

### Claim 2 (depends on 1)

A filter device according to claim 1, wherein a cover plate of the deviation element covers a plurality of outlet slots leading on the membrane side to the outlet.