CONTROL VALVE Russian patent published in 2018 - IPC G05D7/06 F16K3/26 F24D19/10 

FIELD: control; regulation.

SUBSTANCE: invention relates to a control valve. Control valve comprises valve body (2), flow shutter (18) operatively interposed between inlet (4) and outlet (5), driving spindle (14) having at least first actuating end (14a) and second end (14b) connected to flow shutter (18). Valve also comprises a differential pressure automatic regulation device, comprising cup-shaped body (31) arranged around driving spindle (14) and axially mobile with respect to said driving spindle (14); spring (37) operatively interposed between valve body (2) and cup-shaped body (31) to push the latter away from flow shutter (18); rolling membrane (39) having radially inner edge (40) fixed to cup-shaped body (31) and radially outer edge (41) fixed to valve body (2) so as to delimit first chamber (42) in fluid communication with inlet (4) and second chamber (43) in fluid communication with outlet (5). Flow shutter (18) has at least one inlet opening (24) facing inlet (4) of valve body (2) and at least one outlet opening (23) facing cup-shaped body (31). Shutter (26) is mounted around driving spindle (14) and facing the outlet opening of the flow shutter, as a result of which flow from the inlet enters into the flow shutter along a direction substantially radial to the main axis of the valve, and exits the flow shutter along a direction substantially parallel to the main axis of the valve, and then transits towards the outlet of the valve along a direction substantially radial to the main axis of the valve.

EFFECT: simplicity and compactness of the valve is achieved, flow is uninterrupted, and quick automatic adjustment thereof.

18 cl, 10 dwg