Portable and quick-open type high-pressure stop valve
A quick-opening, shut-off valve technology, applied in the direction of lift valves, valve devices, engine components, etc., can solve the problems of longer opening and closing time of the shut-off valve, large opening and closing, and large diameter of the valve stem, so as to shorten the opening time , reduce the opening force, reduce the effect of spring preload
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[0030] Turn the adjustment handwheel (18) to move the spool pressure rod (16) up to the predetermined position. At this time, both the main spool spring (14) and the auxiliary spool spring (12) have a certain pretightening force to close the stop valve. , that is, the taper mating surfaces of the main valve core (7) and the main valve port (6) on the valve body (1), the auxiliary valve core (10) and the auxiliary valve port (8) at the lower end of the main valve core (7) are all It plays a sealing role, so that the water inlet and the water outlet are not connected; when the high-pressure liquid enters the stop valve through the water inlet, the solution enters the main valve core (7) through the four flow channel holes uniformly distributed along the circumferential direction of the axis. In the cavity of the spool (7), the upper and lower surfaces of the cavity of the main spool (7) are subject to the same pressure. Push the spool push rod (2) to move up, the auxiliary spool...
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