Filter screen assembly
AssigneeUSFilter Corporation
InventorsStephen B. Wilcher, Juan Fernando Segura, Nathan Lawrence Panek, Alan Wallace Steele
Life of this patent
Estimating the term…
Abstract
A waste water filter screen assembly that has a substantially open foot section to promote more efficient flow through. The rotating grid is generally free hanging. The present invention further provides a drive assembly with square, high friction drive drums mounted on the drive shaft. The present invention further provides idler roller assemblies mounted for guiding the rotating grid adjacent the filter screen assembly head. The open foot section, drive assembly and idler roller assembly are useable with filter grids of both the link element type and the panel type.
Claims20
A fine filter screen assembly comprising:
- a frame assembly including a foot section adapted to be positioned in a water channel;
- a fine filter grid supported in the frame assembly for rotation through the foot section, the fine filter grid having a thickness T;
- and
- inner and outer guide members supported in the foot section to define given extents of a grid travel path through the foot section, the inner and outer guide members spaced from one another at least a distance D that is substantially larger than the thickness T.
A fine filter screen assembly comprising:
- a frame assembly;
- a rotatable shaft supported in the frame;
- a drive configured to controllably rotate the shaft;
- at least one drive drum positioned on the shaft for rotation therewith;
- the drive drum has an external surface that is substantially defined by a high friction surface;
- and
- a fine filter grid supported in the frame assembly and positioned about and in contact with the drive drum such that rotation of the shaft causes rotation of the fine filter grid.
A fine filter screen assembly comprising:
- a frame assembly;
- at least one rotatable shaft supported in the frame;
- at least two spaced apart rollers positioned about the shaft;
- and
- a fine filter grid supported in the frame assembly and positioned about and in contact with the rollers such that the rollers assist in maintaining the fine filter grid moving along a desired grid travel path.
Dependencies are inferred from the claim text.