BOTTOM DISCHARGE VALVE WITH BUILT-IN PNEUMATIC ACTUATOR

摘要

FIELD: machine building.SUBSTANCE: pneumatic actuator is built into a bottom discharge valve and separated from a flow part of the valve with an elastic diaphragm and a protective metal membrane. One of the pistons of the pneumatic actuator is attached to a mushroom-type stock. The other piston is floating and has an elongated hub. In the hub cavity there is a fixed separator with two-row symmetrically located seats. One ball is located in seats of a single-place row. Balls are arranged in pairs in seats of a two-place row. In the hub and on the stock there are grooves shaped to the balls so that the latter can interact with them in disengaged and extreme stock positions. In two-place seats of separator at extreme stock positions there formed are ball locks in the form of ball braces between grooves of the hub and the stock. In one-place seats of separator there is play-free contact of balls to the shaped groove on the stock. A shell from transparent material is installed on the stock end.EFFECT: providing remote control; improving reliability and safety of valve operation.2 cl, 2 dwg