Replaceable filter plate assembly for a rotary drum filter

Patent metadata

Field	Value
Publication number	US-11633681-B2
Application number	US-202016775744-A
Country	US
Kind code	B2
Filing date	Jan 29, 2020
Priority date	Feb 5, 2019
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A removable filter plate for a rotary drum filter that reduces instances of welding to secure the filter plate to the drum and obviates the need for cap strips. An exemplary filter plate assembly in accordance with this disclosure comprises a filter plate and an engagement assembly, wherein the engager of the engagement assembly is configured to extend in a lateral direction toward the leading end or the trailing end of the filter plate, wherein an extended engager having an engagement end disposed under a shelf of the adjacent top hat mounting assembly defines a closed position, and wherein a retracted engager defines an open position.

First claim

What is claimed is:

1. A rotary drum filter removable filter plate assembly comprising:
a filter plate having a leading end distally disposed from a trailing end;
an engagement assembly engaged to the filter plate, the engagement assembly comprising:
an engager; and
an engager holder supporting the engager, wherein the engager holder is attached to a bottom surface of the filter plate and the engager is configured to move in an axial direction, a radial direction, a lateral direction, a combination of an axial direction and a radial direction, a combination of an axial direction and a lateral direction, a combination of a radial direction and a lateral direction, or a combination thereof while supported by the engager holder, wherein in a closed position the engager is extended under a first shelf of a mounting clip and the leading end or the trailing end of the filter plate overlies the first shelf of the mounting clip.

2. The assembly of claim 1 , wherein a plug seal is disposed between the first shelf of the mounting clip and the filter plate.

3. The assembly of claim 1 , wherein the filter plate is a corrugated filter plate comprising ridges and channels, the corrugated filter plate having multiple drainage slots defined by apertures in the corrugated filter plate and disposed along a width of the corrugated filter plate.

4. The assembly of claim 3 , further comprising an engager slot defined by areas of a ridge in the corrugated filter plate, wherein the engager of the engagement assembly further comprises an elongate leg and a handle, wherein the handle extends through the engager slot.

5. The assembly of claim 4 , wherein the handle of the engager has a handle base profile, and wherein the handle base profile conforms to a ridge profile of the corrugated filter plate.

6. The assembly of claim 4 , wherein the handle of the engager further comprises ears extending from a handle base profile.

7. The assembly of claim 4 , wherein the handle of the engager further comprises a key and lock mechanism.

8. The assembly of claim 4 , wherein the engagement assembly further comprises a plug configured to be disposed in the engager slot to define a locked position.

9. The assembly of claim 8 , wherein the plug further comprises a key assembly.

10. The assembly of claim 8 , wherein the plug has a plug base profile that matches a ridge profile of the corrugated filter plate.

11. The assembly of claim 1 , wherein the mounting clip is adjacently disposed to the leading end of the filter plate in an installed position and a second mounting clip is adjacently disposed to the trailing end of the filter plate in the installed position.

12. The assembly of claim 1 , wherein the engager is selected from the group consisting of: a latch, a lever, a cam lever, a knob latch, a clamp, a bolt, a wedge, a clip, a clasp, a screw, and an insert, or a combination thereof.

Assignees

• Andritz Inc

Inventors

• Grace Todd
• Stubblefield Kent

Classifications

• B01D33/073

  arranged for inward flow filtration · CPC title

• B01D2265/028

  Snap, latch or clip connecting means · CPC title

• B01D33/067 Primary

  Construction of the filtering drums, e.g. mounting or sealing arrangements · CPC title

• B01D35/02 Primary

  Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks, (B01D35/05 takes precedence; {water pipe system filters E03B3/18, E03B7/07; dirt catchers in sewers E03F; filters or strainers for pipe-lines in general B08B, E03F; object or dirt catching devices in sinks or the like E03C1/26; suction strainers or filters for pumps F04B53/005, F04D29/70}) · CPC title