Replaceable filter plate assembly for a rotary drum filter

Patent metadata

Field	Value
Publication number	US-2020246733-A1
Application number	US-202016775744-A
Country	US
Kind code	A1
Filing date	Jan 29, 2020
Priority date	Feb 5, 2019
Publication date	Aug 6, 2020
Grant date	—

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, and an axial filter plate bisection line extending through the filter plate; and an engagement assembly engaged to the filter plate, the engagement assembly comprising:
an engager, wherein the engager is configured to extend in a lateral direction toward the leading end or the trailing end of the filter plate, wherein an extended engager defines a closed position, wherein the engager is configured to retract in the lateral direction toward the axial filter plate bisection line, and wherein a retracted engager defines an open position.

2 . 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.

3 . The assembly of claim 1 , wherein an adjacent mounting clip engages a radially distal end of a grid support, and wherein the extended engager extends toward the adjacent mounting clip.

4 . The assembly of claim 1 , wherein the extended engager in the closed position extends under a first shelf of a mounting clip adjacent to the leading end of the filter plate, and wherein a plug seal is disposed between a first shelf of the mounting clip and the filter plate.

5 . The assembly of claim 1 further comprising an engager holder supporting the engager.

6 . 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 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, wherein the engager extended toward an adjacent end of the filter plate defines a closed position, and wherein the engager retracted from the adjacent end of the filter plate defines an open position.

7 . The assembly of claim 6 , wherein the extended engager in the closed position extends under a first shelf of a mounting clip adjacent to the leading end of the filter plate, and wherein a plug seal is disposed between the first shelf of the mounting clip and the filter plate.

8 . The assembly of claim 6 , wherein the filter plate is a corrugated filter plate comprising ridges and channels, the corrugated filter plate having multiple drainage slots defined by areas of the corrugated filter plate and disposed along a width of the corrugated filter plate.

9 . The assembly of claim 6 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 though the engager slot.

10 . The assembly of claim 6 , 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.

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

12 . The assembly of claim 6 , wherein the handle of the engager further comprises a key and lock mechanism.

13 . The assembly of claim 6 , wherein the engagement assembly further comprises a plug configured to be disposed in the engager slot to define a locked position.

14 . The assembly of claim 13 , wherein the plug further comprises a key assembly.

15 . The assembly of claim 13 , wherein the plug has a plug base profile that matches a ridge profile of the corrugated filter plate.

16 . The assembly of claim 6 , wherein the engager of the engager assembly engages a mounting clip adjacently disposed to the leading end in the closed position.

17 . The assembly of claim 6 , wherein the engager of the engager assembly engages a second mounting clip adjacently disposed to the trailing edge in the closed position.

18 . The assembly of claim 6 , wherein the first mounting clip and the second mounting clip lack cap strips.

19 . The assembly of claim 6 , 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.

20 . A rotary drum filter assembly comprising:
a corrugated filter plate comprising ridges and channels, the corrugated filter plate having a leading end distally disposed from a trailing end, and multiple drainage slots defined by areas of the corrugated filter plate and disposed along a width of the corrugated filter plate; an engager slot defined by areas of the corrugated filter plate; an engagement assembly comprising:
an engager comprising an elongate leg and a handle, wherein the handle extends through the engager slot, and
an engager holder, wherein the engager is disposed in the engager holder and 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, wherein the engager holder engages the corrugated filter plate;
a first mounting clip adjacently disposed to the leading end of the corrugated filter plate in an installed position; a second mounting clip adjacently disposed to the trailing end of the corrugated filter plate in the installed position, wherein the engager extended toward an adjacent end of the filter plate defines a closed position, and wherein the engager retracted from the adjacent end of the filter plate defines an open position.

21 . The assembly of claim 20 , wherein the engager in the closed position extends under a first shelf of a mounting clip adjacent to the leading end of the filter plate, and wherein a plug seal is disposed between the first shelf of the mounting clip and the filter plate.

22 . The assembly of claim 20 , 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.

23 . A rotary drum filter removable filter plate assembly comprising:
a filter plate having a leading end distally disposed from a trailing end, and an axial filter plate bisection line extending through the filter plate; and an engagement assembly engaged to a mounting clip or a grid support, the engagement assembly comprising:
an engager, wherein the engager is configured to extend in a lateral direction toward the leading end or the trailing end of the filter plate and, wherein an extended engager defines a closed position, wherein the engager is configured to retract in the lateral direction toward mounting clip or a grid support, and wherein a retracted engager defines an open position.

24 . The assembly of claim 23 , 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

Assignees

• Andritz Inc

Inventors

• Grace Todd
• Stubblefield Kent

Classifications

• B01D33/073

  arranged for inward flow filtration · 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

• B01D2265/028

  Snap, latch or clip connecting means · CPC title