B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
103/150
B01D 19/00 (2006.01) F04D 9/00 (2006.01) F04D 29/22 (2006.01) F04D 29/24 (2006.01) F04D 29/42 (2006.01)
Patent
CA 1333972
The present invention relates to a method and apparatus for separating gas by a pump from the medium being pumped, which method and apparatus are especially suitable in pumping the gaseous fibre suspensions in the wood processing industry. In the apparatuses of the prior art used for a corresponding purpose the trouble has been not the separation of the gas from the medium, but guiding the gas out of the pump in such a way that no solids would enter the gas discharge system, because gradually the gas discharge system and a vacuum pump possibly in it would clog and this would result in reparations requiring a lot of time and this again in expensive stops at the mill. The method and apparatus in accordance with the present invention eliminate or minimize the above described defect in such a way that rear vanes (11) of the pump or the members operating together with them are arranged in such a way that they either direct the flow of the medium, generated by the combined effect of forces with different directions and different intensities directed at the medium in the space behind the impeller in the vane gaps of said rear vanes, past gas discharge opening (12) in the rear wall of the pump or they slow down said flow so that its extension to said gas discharge opening (12) is prevented.
596174
Elonen Jorma
Timperi Jukka
Vesala Reijo
Vikman Vesa
Gowling Lafleur Henderson Llp
Sulzer Pumps Ltd.
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