Resilient seat gate valve
AssigneeMcWane, Inc.
InventorJerry Bottenfield
Life of this patent
Estimating the term…
Abstract
A valve arrangement includes a valve housing that defines a product passageway and a valve seat within the product passageway. A valve wedge is disposed within the housing passageway, and moves along a direction of operation between a closed position and an open position. A pair of opposed wings are carried on the valve wedge, adjacent a guide track. Rollers are carried on the wings for rolling engagement with the tracks and scraper blades are carried on the wings adjacent the rollers to scrape contamination from tracks.
Claims18
A valve arrangement, comprising:
- a valve housing defining a product passageway and a valve seat within the product passageway;
- a valve wedge disposed within the housing passageway, movable along a direction of operation between a closed position in contact with the valve seat to block flow of a product through the product passageway and an open position allowing flow of product through the product passageway;
- a pair of spaced apart tracks disposed within the valve housing on either side of said wedge and extending along the direction of operation;
- a pair of opposed wings carried on the valve wedge, one adjacent each track;
- a valve stem coupled to the valve wedge for moving the valve wedge in opposite reciprocating directions between said valve open and said valve closed positions;
- rollers carried on at least one of said wings for rolling engagement with said tracks;
- and
- a scraper body with a pair of scraper blades to scrape contamination from said tracks, the scraper body carried on said wings adjacent the rollers.
A valve wedge for use in a valve housing having a pair of opposed tracks extending along a direction of operation, the valve wedge comprising:
- a valve body defining a product passageway and a valve seat within the product passageway;
- a pair of opposed wings carried on the valve body, one adjacent each track;
- a valve stem coupled to the valve wedge for moving the valve wedge in opposite reciprocating directions between said valve open and said valve closed positions;
- rollers carried on at least one of said wings for rolling engagement with said tracks to render said valve wedge movable along the direction of operation between a closed position in contact with the valve seat to block flow of a product through the product passageway and an open position allowing flow of product through the product passageway;
- and
- a scraper body with a pair of scraper blades to scrape contamination from said tracks, the scraper body carried on said wings adjacent the rollers.
Dependencies are inferred from the claim text.