Ví dụ về việc sử dụng Valve poppet trong Tiếng anh và bản dịch của chúng sang Tiếng việt
{-}
-
Colloquial
-
Ecclesiastic
-
Computer
Valve poppet or cone.
Classification according to valve poppet structure.
To turn the valve poppet is able to change the groove gap area and throttle the oil by the area dimension.
Cracking pressure refers to the pressure in the inlet cavity when the valve poppet is just opened.
The basic cartridge structure includes a valve poppet, which is normally held in the closed set up using a spring.
The groove throttlevalve is throttling the flow by a groove on the valve poppet.
There is a small hole on the side of the main valve poppet, connecting the side port and the spring chamber.
There are three ports of pilot operated check valve, the hydraulic oil at A port is through with B port when if there is a hydraulic oil at the A port andpressurize to push the valve poppet.
Normally open SV08-21 solenoidcartridge valve is two flow way and two of valve poppet position cartridge type solenoid operated valve. .
According to the different valve poppet, hydraulic check valve can be divided into ball valve poppet type, spool poppet type and spool type.
The hydraulic pressure relief valve usually adopts this design,and the shape of the valve poppet is usually spool poppet. .
Hydraulic relief valve consists of valve housing A, valve poppet B and spring C and other basic components, at least there are one inlet(P) port and one outlet(T) port.
From the structural point of view, it can be divided into slide valve, ball valve, poppet valve, slide cone valve, etc.;
There are one or two triangular slots on the end of valve poppet, the fluid flow rate is able to be regulated by the poppet axial movement to adjust the area of triangular slot.
Hydraulic check valve is generally composed of a check valve housing,a spring and a valve poppet, and a non-spring check valve is rarely used.
By regulating the adjustable knob to move the valve poppet position axially, which is be able to achieve fluid flow rate adjustment by adjusting cross-sectional area of throttle port.
There are other throttle port type, such as needle throttle valve, eccentric style throttle valve, poppet seal throttle valve and axial gap throttle valve. .
The key parts of valve poppet and valve seat is manufactured by high strength steel materials and surface hardened before the last processing of fine grinding, therefore Finotek normally closed solenoid valve is longer service life than others.
When the pressure at port① is higher than the pressure at port② plus spring pressure,the valve poppet is pushed open and the oil flow passage is opened, then the oil flows positively through the hydraulic check valve(①-gt;②).
The eccentric type throttle valve feature is most similar with needle throttle valve, it is easy to be manufactured,but the disadvantage is unbalanced radial force on the valve poppet and hardly to rotate the adjustment wheel, especially under higher pressure.
There is an eccentric slot of three angle shape on the cross section of valve poppet, the eccentric throttle valve adjusts the fluid flow rate by turning the valve poppet to change the size of throttle area.
The solenoid coil transfers the input current into a magnetic field, then the electromagnetic armature elements in magnetic field change the magnetic force to pull or thrust force,with the force, valve poppet in the normally closed solenoid valve closes its flow channel in one way direction.
Internal leakage means the amount of leakage through the sealing surface between the valve poppet and the valve seat when the hydraulic checkvalve is in the working condition of reverse sealing(Reverse Flow).
In the way of forward flow, because the pressure drop caused by the spring force andthe friction force between the valve housing and the valve poppet needs to be overcome, the through-flow pressure drop cannot be less than the opening pressure.
The throttle oil port can be produced to a thin edge shape,to achieve small and low stable flow, but the valve poppet is unbalance while operation by radial force, therefore, the groove throttle valve is usually used for low pressure hydraulic system.
Poppet valve in brass, spring in stainless steel.
Festo Type Pneumatic Poppet Valve, XMFH Series….
Festo Type Pneumatic Poppet Valve, XMFH Series Tige….
Poppet valve in brass, spring in stainless steel, O-Ring in NBR.
The factors affecting the switching limit of the solenoid valve are different in the direct acting type, the pilot differential type,the spool valve and the poppet seat valve.