초록 ▼

A multi-position valve for dispensing fluid and providing continuous fluid flow through the valve assembly. The multi-position valve assembly including an inlet port, an outlet port, and a return port leading to a fluid chamber. The multi-position valve assembly further includes a closure assembly f

A multi-position valve for dispensing fluid and providing continuous fluid flow through the valve assembly. The multi-position valve assembly including an inlet port, an outlet port, and a return port leading to a fluid chamber. The multi-position valve assembly further includes a closure assembly for selectively directing fluid through the valve assembly. The closure assembly is operatively connected with some type of linear actuator, such as an air cylinder, for selectively moving the closure assembly and placing the multi-valve assembly between a closed position, a partially-open position, and a fully-open position. When in the closed position, the closure assembly directs fluid flow through a return flow path leading to the return port, while blocking the fluid flow to the outlet port. When in the partially-open position, the closure assembly directs fluid flow through both the return flow path and a first outlet flow path leading to the outlet port. When in the fully-open position, the closure assembly directs fluid flow through both a first and a second outlet flow path leading to the outlet port, while blocking fluid flow to the return port. The air cylinder is detachably connected to the valve to provide for repair and replacement.

대표청구항 ▼

A multi-position valve assembly for dispensing large incoming volumes of a fluid while preventing settling, separation or hardening which occurs in a non-flow condition, said assembly comprising: a. a valve housing enclosing a fluid chamber and including an inlet port, an outlet port, and a return p

A multi-position valve assembly for dispensing large incoming volumes of a fluid while preventing settling, separation or hardening which occurs in a non-flow condition, said assembly comprising: a. a valve housing enclosing a fluid chamber and including an inlet port, an outlet port, and a return port leading into the fluid chamber, and wherein the fluid chamber includes a return flow path extending from the inlet port to the return port and a first and a second outlet flow path extending from the inlet port to the outlet port; b. a closure assembly disposed within the valve housing for directing incoming fluid flow from the inlet port and including: i. a first outlet closure member positionable between a seated position and an unseated position, and wherein when in the seated position the first outlet closure member seats with a first valve seat to block the first outlet flow path; ii. a second outlet closure member positionable between a seated position and an unseated position, and wherein when in the seated position the second outlet closure member seats with a second valve seat to block the first outlet flow path; iii. a return closure member positionable between a blocking position and an unblocking position, and wherein when in the blocking position the return closure member seals against the inner wall of said valve housing at a point between the inlet port and the return port to block the return flow path; c. wherein said closure assembly is selectively positionable to place the closure assembly and valve assembly in a plurality of positions, the positions including: i) a closed position where the closure assembly directs all of the incoming fluid flow through the return flow path while blocking incoming fluid flow from flowing through the first and second outlet flow paths; ii) a partially-open position where the closure assembly directs incoming fluid flow through the return flow path and through the first outlet flow path while blocking incoming fluid flow through the second outlet flow path, so as to direct a portion of the incoming fluid flow to the return port and another portion of incoming fluid flow to the outlet port; iii) a fully-open position where the closure assembly directs all of the incoming fluid flow through both the first and the second outlet flow paths while blocking incoming fluid flow from flowing to the return flow path, so as to direct all incoming fluid flow to the outlet port while blocking incoming fluid flow from the return port entirely; and d. a control rod extending axially through said valve housing, wherein said first outlet closure member is attached to the lower end of said control rod and extends axially downwardly therefrom, said return closure member and said second outlet closure member being connected together and forming a sleeve about the control rod, and wherein the return closure member and the second outlet closure member are slidably movable along the control rod; and e. means for moving said closure assembly between said closed, partially open, and fully open positions.