Patent ID: 6451265
Filing Date: 2002-09-17
Classification: B01F

Abstract:
An assembly for mixing a polymer with water and activating the polymer, comprising:a mixing chamber having a first inlet, a second inlet and an outlet orifice having a peripheral seat at its distal ends wherein said seat has a cross-section shaped as a right angled corner; means for introducing a flow of said water to said first inlet; means for introducing a flow of said polymer to said second inlet; a plug disposed outside said mixing chamber and shaped to seal said outlet orifice along said seat; and means for yieldably biasing said plug against said outlet orifice peripheral seat; whereby the flow of the mixed water and polymer exerts a force against said plug which causes said plug to move away from said outlet orifice seat against the force exerted by said biasing means so as to provide a gap between said plug and said outlet orifice seat which results in the activation by shearing of polymer passing through said gap.