BALL VALVE Russian patent published in 2019 - IPC F16K5/06 F16K5/12 

FIELD: machine building.

SUBSTANCE: invention relates to shutoff and control valves, particularly, to ball valves. Ball valve includes housing with inlet and outlet branch pipes, ball rotary gate with through passage, spindle, spindle seal, seat of ball rotary valve. In the through passage hole of the spherical rotary shutter medium flow diverters are installed. Medium flow dividers are made in the form of three flat plates installed parallel to each other, perforated with round holes in cross section, fixed relative to through passage holes by means of welding, are installed parallel to pivot axis of rotary shutter and at equal distance of extreme plates from central plate. Central flat plate passes through the axis of the spherical rotary shutter. Flat plates are interconnected by means of two parallel rows of round in cross-section rods, parallel to longitudinal axis of housing of ball valve and connected to flat plates by means of welding, holes in flat plates are made in staggered order, inlet and outlet edges of flat plates are made along spherical surface of spherical rotary shutter and are rounded. Rounding profile is formed by circular arcs smoothly conjugated with flat side surface of plates.

EFFECT: as a result, expansion of functional capabilities is achieved by providing a wider range of control flow rate flowing through ball valve medium at relatively low hydraulic losses and, as a result, low level of noise and vibration, as well as preventing the development of cavitation during operation of ball valve.

1 cl, 3 dwg