BEARING FOR ROTARY CONTROL VALVE

摘要

A thrust bearing for use with a rotary valve is provided. The thrust bearing includes a journal portion and a thrust portion. The journal portion is sized to be disposed between a valve body of the rotary valve and a drive shaft of the rotary valve. The thrust portion is sized to be disposed between the valve body and a control member disposed within the valve body and movable relative to a valve seat disposed within the valve body via a drive shaft to control fluid flow through the valve body. The thrust portion includes a flat surface adapted to engage a corresponding flat surface of the valve body when the bearing is subject to a combined thrust and torsional load via the drive shaft, such that the bearing can accommodate the combined thrust and torsional load.

主权项

1. A rotary valve, comprising:
a valve body defining a fluid inlet and a fluid outlet; a valve seat arranged within the valve body; a closure member disposed within the valve body and movable relative to the valve seat via a drive shaft to control fluid flow through the valve body; and a bearing disposed in the valve body to maintain the closure member in alignment with the valve seat, the bearing having a first portion disposed between the valve body and the drive shaft and a second portion disposed between the valve body and the closure member, the second portion having a flat surface configured to engage a corresponding flat surface of the valve body when the bearing is subject to a combined thrust and torsional load via the drive shaft, such that the bearing can accommodate the combined thrust and torsional load.