Conical valve is mainly composed of valve body, diversion cone,
sleeve, actuators, tie rod and actuator components, including the
body is fixed, actuators move through the drive of opening and
closing sleeve, body sealing effect, the valve is in the whole
range will not produce cavitation and vibration, still has good
flow control effect in traffic hours.
(1) for a fixed inverted conical structure, respectively on the
valve body is equipped with metal to metal seat and protective soft
sealing seat, or both constitutes the seat to ensure the sealing
performance of composite.
(2) good flow conditions, higher flow coefficient than other valves
(u=0.75-0.83 or higher)
(3) simple structure, all valve drive parts are set outside the
valve body for easy maintenance.
(4) the open-close torque is small, easy to operate, can be applied
to without the power of small and medium-sized water conservancy
projects, also set up electric, pneumatic, electric hydraulic
linkage open-close operation mechanism, easily implement remote
control or automatic running unattended.
(5) the discharge when the gushing water tongue as a
trumpet-shaped, air diffusion of the fog, the efficiency of the
effect is good, simple energy dissipation pool or no energy
dissipation measures, such as the setting for the submerged
discharge, the underwater of energy dissipation is also very simple
(6) the fluid is evenly divided by 4-8 inner guide vanes to reduce
the generation of whirlpool and vibration;
(7) its opening and closing of the valve or flow control by outside
around the sleeve movement to opening and closing action, sealing
is realized by using square seal between the sleeve and body,
between sleeve and the valve guide paper copper bar is fixed on the
back blades, move the sleeve valve flow coefficient and have a
certain proportion valve stroke.
(8) for different position and pressure of fluid, you can set the
metal hard seal and fluorine plastic soft sealing, high strength
alloy stainless steel seat design of the composite structure with
the characteristics of the metal to metal seal and soft seal;
(9) the divergence Angle can be limited, and the fluid can be
decomposed into rarefied spray or circular convection to achieve
the purpose of shock cancellation.At the same time, it can meet the
needs of different sites. If free diffusion is not allowed on the
site, the direction of efflux can be controlled by installing a
guide cover or a concrete culvert with steel lining.