Controlling a sludge flow
AssigneeOutokumpu Oy
InventorVilho Viljo Jantunen
Life of this patent
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Abstract
The invention relates to a method for controlling a pumped sludge flow by throttling the suction side of the pump and to a device for use in the method. The device having an inner member with an outer member so fitted around it that the inner member and the outer member can be moved in relation to each other, and inlets provided in either the inner member or the outer member or both so that when the inner member or the outer member is in one extreme position the inlets are fully closed and when it is in the other extreme position the inlets are fully closed, and a channel which leads to the suction side of the pump fixed to either the inner member or the outer member so that when the inlets are open, liquid flows from the surroundings through the inlets into the channel and thence into the pump.
Claims4
In combination, a sludge reservoir, a pump for pumping sludge from said reservoir, a channel leading from said reservoir to a suction side of said pump, and a valve submerged during operation in sludge in said reservoir, said valve having a pair of coaxially related members in relatively slidable interfitted relationship with each other, one of said members having an apertured wall for sliding against the other of said members, and means for effecting relative sliding movement between said members for controlling sludge flow through one or more apertures of said apertured wall, one of said members being connected to said channel.
Dependencies are inferred from the claim text.