MULTI-PASS STRAIGHT FLOW ADJUSTABLE THROTTLE Russian patent published in 2011 - IPC F16K3/08 F16K39/04 

FIELD: machine building.

SUBSTANCE: multi-pass straight-flow adjustable throttle consists of case, of inlet and outlet end covers correspondingly connected with pump and outlet mains, of swivel wheel with drive, of inlet disk rotating together with swivel wheel, of outlet disk set stationary relative of outlet cover and case, of relief device consisting of relief cavity between end of outlet cover and end of swivel wheel and connected with pump main by means of channels in inlet cover, case and outlet cover pressure tight interconnected with sealing elements and process plugs, and of compensating cavity made between internal end of swivel wheel and end of stationary disk and connected to outlet main by means of channel made in outlet disk. The relief device is equipped with a dividing element in form of a plunger with packing rings, installed in the channel of the inlet cover and designed to perform axial transfers. Also, the relief cavity and the channels before the plunger are filled with hydraulic fluid, while under-the plunger part of the channel of the inlet cover is connected with the pump main. The process plugs are made as filling connecting pipes.

EFFECT: increased operational reliability of throttle.

1 dwg