Filter device and method for filtering a suspension

Patent metadata

Field	Value
Publication number	US-9968871-B2
Application number	US-201214394490-A
Country	US
Kind code	B2
Filing date	Apr 19, 2012
Priority date	Apr 19, 2012
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

The invention relates to a filter device for filtering a suspension, and the method of operation thereof, wherein between a stationary head piece and a movable end piece, the filter device has a pack of a recess plate and an adjacent recess plate, the filter device has a suspension pipe for piping for piping a first stream of the suspension from the head piece into the pack, wherein connecting to the end piece, and a supply pipe for piping a second stream of the suspension into the suspension pipe, forming a filter chamber, the recess plate and/or the adjacent recess plate has a recess, from the suspension pipe, the recess plate has a suspension duct for piping the suspension into the filter chamber, and wherein between the recess plate and the adjacent recess plate, the filter device has at least one filter cloth for filtering a solid content out of the suspension.

First claim

What is claimed is:

1. Filter device for filtering a suspension, wherein
a. between a stationary head piece and a movable end piece, the filter device has a pack of at least a recess plate and an adjacent recess plate,
b. running to the end piece through the pack, including through the recess plate and the adjacent recess plate, the filter device has a suspension pipe for piping a first stream of the suspension from the head piece into the pack,
c. connecting to the end piece, the filter device has a supply pipe for piping a second stream of the suspension into the suspension pipe,
d. forming a filter chamber between the recess plate and the adjacent recess plate, the recess plate and/or the adjacent recess plate has a recess,
e. from the suspension pipe, the recess plate has a suspension duct for piping the suspension into the filter chamber, and
f. between the recess plate and the adjacent recess plate, the filter device has at least one filter cloth for filtering a solid content out of the suspension,
characterized in that the supply pipe runs from the head piece to the end piece through the pack, including through the recess plate and the adjacent recess plate, and
characterized by a duct, that is integrated into the end plate, and that connects the supply pipe to the suspension pipe.

2. Filter device according to claim 1 , characterized in that the suspension pipe and the supply pipe are on opposite sides of the filter device, and of both the recess plate and the adjacent recess plate.

3. Filter device according to claim 1 , characterized in that the supply pipe has the same sectional area as the suspension pipe.

4. Filter device according to claim 1 ,
characterized in that the supply pipe is connected to the suspension pipe without an external pipe from the supply pipe to the suspension pipe.

5. Method for filtering a suspension in a filter device, wherein between a stationary head piece and a movable end piece, the filter device has a pack of at least a recess plate and an adjacent recess plate, and wherein the recess plate and/or the adjacent recess plate has a recess, forming a filter chamber between the recess plate and the adjacent recess plate, the method including the steps of
a. piping a first stream of the suspension from the head piece running through a suspension pipe, that runs from the head piece to the end piece through the pack, including through both the recess plate and the adjacent recess plate;
b. piping a second stream of the suspension from a supply pipe through the end piece into the suspension pipe,
c. piping the suspension from the suspension pipe through a suspension duct of the recess plate into the filter chamber; and
d. directing the suspension through at least one filter cloth between the recess plate and the adjacent recess plate, filtering a solid content out of the suspension,
characterized in that the supply pipe runs from the head piece to the end piece through the pack, including through the recess plate and the adjacent recess plate, and
characterized by a duct, that is integrated into the end piece, and that connects the supply pipe to the suspension pipe.

6. The method of claim 5 , characterized in that the supply pipe is connected to the suspension pipe without an external pipe from the supply pipe to the suspension pipe.

7. A filter device for filtering a suspension, comprising:
a pack of at least a recess plate and an adjacent recess plate between a stationary head piece and a movable end piece;
a suspension pipe for receiving a first stream of the suspension from the head piece running to the end piece through the pack including through the recess plate and the adjacent recess plate;
a supply pipe for piping a second stream of the suspension into the suspension pipe connecting to the end piece;
the recess plate or the adjacent recess plate has a recess forming a filter chamber between the recess plate and the adjacent recess plate;
the recess plate has a suspension duct for piping suspension from the first stream of the suspension and the second stream of the suspension into the filter chamber from the suspension pipe; and
at least one filter cloth for filtering a solid content out of the suspension between e recess plate and the adjacent recess plate,
wherein the supply pipe runs from the head piece to the end piece through the pack, including through the recess plate and the adjacent recess plate, and
wherein the supply pipe is connected to the suspension pipe without an external pipe from the supply pipe to the suspension pipe.

8. The filter device according to claim 7 , wherein the suspension pipe and the supply pipe are on opposite sides of the filter device, and of both the recess plate and the adjacent recess plate.

9. The filter device according to claim 7 , wherein the supply pipe has the same sectional area as the suspension pipe.

10. The filter device according to claim 7 , further comprising a duct integrated into the end plate that connects the supply pipe to the suspension pipe.

11. Method for filtering a suspension in a filter device, wherein between a stationary head piece and a movable end piece, the filter device has a pack of at least a recess plate and an adjacent recess plate, and wherein the recess plate or the adjacent recess plate has a recess, forming a filter chamber between the recess plate and the adjacent recess plate, the method comprising the steps of:
piping a first stream of the suspension front the head piece into a suspension pipe that runs from the head piece to the end piece through the pack, including through both the recess plate and the adjacent recess plate;
piping a second stream of the suspension from a supply pipe through the end piece into the suspension pipe;
piping suspension from the first stream of the suspension and the second stream of the suspension from the suspension pipe through a suspension duct of the recess plate into the filter chamber; and
directing the suspension through at least one filter cloth between the recess plate and the adjacent recess plate, filtering a solid content out of the suspension,
wherein the supply pipe runs from the head piece to the end piece through the pack, including through the recess plate and the adjacent recess plate, and
characterized by a duct, that is integrated into the end piece, and that connects the supply pipe to the suspension pipe.

Assignees

• Boehnke Bernd
• Outotec Finland Oy

Inventors

• Böhnke Bernd

Classifications

• B01D39/08

  Filter cloth, i.e. woven, knitted or interlaced material (metallic B01D39/10) · CPC title

• B01D25/215

  Construction of the filter plates, frames · CPC title

• B01D37/00

  Processes of filtration (processes specially adapted for filtering gases B01D46/00) · CPC title

• B01D35/30

  Filter housing constructions · CPC title

• B01D25/302

  specially adapted for chamber filter presses · CPC title