Claims
- 1. Industrial cell filter comprising a series of filtering cells as well as a distributor for collecting and adjusting the distributing of those fluids passing through the cell filtering surface, each cell having a planar filtering bed comprised essentially of a filtering cloth bearing on a rigid apertured support retained above the cell bottom to leave a free space for the flowing of the fluids passing through said cloth, said bottom slanting towards a drain channel collecting said fluids, said channel itself slanting with the low end thereof opening into a discharge duct connected to the distributor, in which guide members are provided to fractionate, divide and direct said fluids as they enter the drain channel into substantially parallel adjacent streams flowing to said discharge duct, said guide members being comprised of a series of baffle-plates spread at the top of said drain channel along the length thereof, some distance above the channel bottom and slanting towards said discharge duct mouth, different ones of the baffle-plates having different angles of slant, the plate farthest from the low end of the drain channel having the steepest slant angle.
- 2. Filter as defined in claim 1, in which the free cell volume between the filtering bed and said slanting bottom, is divided into flow and suction zones by separating ribs extending from the filtering bed to the cell bottom substantially cross-wise to the drain channel axis over the whole cell width.
- 3. Filter as defined in claim 2, in which the baffle-plates number from 1.5 to 10 per running meter of the drain channel length, while the ribs number from 3 to 10 per meter, as counted along a direction in parallel relationship with the drain channel, the top edge of each baffle-plate being located at the level of the drain channel top edges and coinciding with the lower edge of a rib where said rib crosses said channel.
- 4. A filter according to claim 3, in which the baffle-plates number from 2 to 4 per running meter of the drain channel length.
- 5. Filter as defined in claim 1, in which the baffle-plates have a slanting angle relative to the cell horizontal axis from 2.degree. to 20.degree., to the exception of the first plate located on that side opposite the fluid discharge duct, which might make an angle from 10.degree. to 30.degree..
- 6. A filter according to claim 5, in which the said remaining baffle-plates are inclined, relative to the cell horizontal axis, at an angle of from 3.degree. to 12.degree..
- 7. Filter as defined in claim 1, in which the passage area at the mouth of that discharge duct supplied by the drain channel is from 0.2 to 0.6 dm.sup.2 per square meter of filtering surface, and the sum of the passage areas left free between every two adjacent baffle-plates is equal to 1.1 to 6 times the cross-section area of said duct mouth.
- 8. A filter according to claim 7, in which the said passage area at the mouth of the duct into which the drain channel discharges is from 0.3 to 0.4 dm.sup.2, and the sum of the passage areas left free between every two adjacent baffle-plates is from 1.5 to 3 times the cross-sectional area of said duct mouth.
- 9. The filter of claim 1 wherein the successive baffle-plates have progressively varying slant angles.
- 10. The filter of claim 9 wherein the filter cells are wedge-shaped, the wide end of the wedge being farthest from the low end of the drain channel.
- 11. Cell filter, with each cell having a filtering cloth bearing on an apertured support removably mounted above the cell bottom, in which the cloth edges are folded-back inside the cell and upwardly against the side walls thereof, means being provided to secure in a removable and vacuum-tight way said cloth edges against the inner walls and to fix simultaneously said support inside the cell, said means comprising rods formed by two diverging lengthwise arms enclosing an obtuse angle and having two continuous lengthwise projecting edges, said rods being arranged inside each cell along the filtering surface circumference thereof, said folded-back cloth edges being retained between two gaskets from elastomer material, the rod lengthwise projections bearing on the gaskets which lie relative to the folded cloth edges, on that side opposite the inner side walls; fastening members such as bolts acting on the center rod portion lying at the junction of said arms so as to press the cloth and the gaskets against the side walls, while trying to spread resiliently the projections engaging the cloth, in such a way that the rod lower edge also bears on the cloth-support edges and secures same inside the cell.
- 12. Filter as defined in claim 11, in which the cell is stiffened on the outer surface of the side walls thereof by shaped sections arranged level with said rods inside the cells bolts serving as fastening members for the inner sections passing through said walls, the shaft or nut of said bolts being fastened to that section mounted against the outer surface of the cell side walls.
Priority Claims (1)
Number |
Date |
Country |
Kind |
73553 |
Oct 1975 |
LUX |
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Parent Case Info
This is a division of application Ser. No. 730,657, filed Oct. 7, 1976, which issued as U.S. Pat. No. 4,172,791 on Oct. 30, 1979.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
9921 OF |
Jan 1914 |
GBX |
845090 |
Aug 1960 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
730657 |
Oct 1976 |
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