Valve for controlling the flow of semi-liquid compositions
First Claim
1. A valve for controlling the flow of a liquid stream containing solid materials, comprising a valve housing having at least two housing ports for fluid communication with said liquid stream, a cylindrical valve core journaled for rotation within said housing to provide fluid communication between said housing ports and having fluid passages formed therein, at least one of said fluid passages having cutting plate means disposed at the opening of said fluid passage for cutting solid materials during activation of the valve, and means for rotating said valve core to provide fluid communication between said housing ports and said fluid passages, said cutting plate means comprising a circular knife edge disposed along the outside edge of at least one of said fluid passages.
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Accused Products
Abstract
A three-way valve for controlling the flow of semi-liquid compositions having a cylindrical valve core journalled for rotation within a valve housing, cylindrical fluid passages formed within the valve core whereby each such fluid passage has a circular knife-edge type cutting plate disposed along its outer edge for cutting solids during activation of the valve. Exemplary apparatus according to the invention includes sealing means for the valve seats which are adjustable without disassembly of the valve, and means for providing a continuous water flush across the valve seats during normal operation.
22 Citations
7 Claims
- 1. A valve for controlling the flow of a liquid stream containing solid materials, comprising a valve housing having at least two housing ports for fluid communication with said liquid stream, a cylindrical valve core journaled for rotation within said housing to provide fluid communication between said housing ports and having fluid passages formed therein, at least one of said fluid passages having cutting plate means disposed at the opening of said fluid passage for cutting solid materials during activation of the valve, and means for rotating said valve core to provide fluid communication between said housing ports and said fluid passages, said cutting plate means comprising a circular knife edge disposed along the outside edge of at least one of said fluid passages.
Specification