Abstract A high differential pressure filter with a large filter area has a base plate containing threaded apertures over which there is secured a bundle of perforated tubes fixed together in a hexagonal pattern. Each perforated tube has a capped porous metal tube with a threaded base inserted therein and screwed into the base plate. The threaded base has an angular channel therethrough allowing each porous tube to be tightened into the base plate by a wrench inserted from below into the channel. A collector plate is fixed below the base plate and a filter body is disposed about the tube bundle so that viscous material introduced into the filter body passes through the perforated tubes and the porous tubes to be gathered in the collector plate.
The combination according to claim 1 wherein sAid threaded lower ends of said porous tubes are threaded tube adapters fixed to the lower ends of said porous tubes, said tube adapters containing angular channels therethrough to receive a wrench therein to tighten said porous tubes from below said base plate before said base plate is fixed on said collector plate.
Claim 2
Dependent Claim
55 words
The combination according to claim 2 wherein a bracket is disposed about the lower end of said bundle, said bracket and said base plate containing apertures, and with the addition of bolts passing through said apertures securing said bracket and thereby said bundle to said base plate and said base plate to said collector plate.
Claim 3
Dependent Claim
27 words
The combination according to claim 3 wherein said perforated tubes are tack welded together at their upper and lower ends, said bracket being welded to said bundle.
Claim 4
Dependent Claim
25 words
The combination according to claim 4 wherein said bundle is substantially cylindrical and said filter body is substantially cylindrical and disposed closely about said bundle.