MANUAL HYDRAULIC PUMP FOR EMERGENCY CONTROL OF BALL VALVE DRIVE Russian patent published in 2018 - IPC F04B9/14 F04B9/131 

FIELD: machine engineering.

SUBSTANCE: pump contains a body, a manual piston mechanism and a body bonnet, movable self-aligning bushings with sealing seats. In the head there is a spool valve with channels communicating with the body. Suction and discharge valves are made in the form of a spring-loaded ball, interconnected with the seat. The head cover is closed by a lid, through which the spindle with the handle is passed. The piston mechanism is made of a double cylinder, pistons of which are connected by a rocker. Cylinders are connected by channels with suction and discharge valves. The exit from the first suction valve and the inlet to the first delivery valve by the channels are connected to the first cylinder. The exit from the second suction valve and the inlet to the second delivery valve by the channels are connected to the second cylinder. The inputs to both suction valves are connected to each other and to the distributor by a channel. The outlets from both pressure valves are connected to each other and to the hydraulic distributor by an appropriate channel. Saddles of all pump valves are made in the form of washers with sealing rings on the outer surface and have a working surface designed to interact with the ball from each end of the seat with the ability to rotate the seat if one side of its working surface is damaged before contacting the ball with the other side of the working surface of the seat. The spool of the hydraulic distributor is made in the form of a ball plug, the spherical surface of which is interfaced to the movable self-aligning bushings with sealing seats located in the channels connected to the suction and discharge valves and to the ports of the fittings connected to the cavities of the cylinders of the pneumatic hydraulic actuator.

EFFECT: safety of the pipeline process is ensured by increasing the speed of the hand pump in an emergency situation.

6 dwg