B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
259/47
B01F 5/10 (2006.01) B01F 5/24 (2006.01) B01F 13/02 (2006.01)
Patent
CA 2001831
A blending apparatus for particulate material such as plastic pellets which may be assembled from an existing vertically oriented conical bottom silo. The invention includes inserting a inner cone member with a downwardly extending cylindrical member into the inside of the existing conical bottom silo. A vertically oriented lift pipe extends from below this cylindrical member upwardly through the conical insert to the upper reaches of the vessel. An inlet for gaseous fluid under pressure is provided to blending air to the bottom of the vessel for circulating material from the bottom of the vessel up through the lift pipe to the top of the vessel. A seal leg is established between the vertical lift pipe and the inner cone/hollow cylindrical extension to substantially prevent the blending air from by-passing the lift pipe to aerate material in the vessel. Secondary seal legs are provided around the periphery of the inner cone and extend into the material zone formed between the inner cone and the conical bottom of the silo. An auxiliary gas source may be connected to the area between the inner cone and the bottom of the silo.
Kermit Paul D.
Osler Hoskin & Harcourt Llp
LandOfFree
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