How the classification of slide valve function

      Slide valve function of spool valve in the middle or the original position, the oil outlet valve is called spool valve function. Slide valve function directly influence the executive component of working state, slide valve function can meet the differentrequirements of different system. The correct choice of valvefunction is important.

     Classification

     According to the structure and movement characteristics,reciprocating and rotary slide valve is divided into two types.Reciprocating piston and a planar single valve, planar doublevalve and plunger type 3. Plunger type valve used in the hydraulicand pneumatic device. When the piston reaches the left limit position, spool drive shaft is driven, the piston position to the left,switching the fluid flow, the fluid pressure and flow of P1 B channel, enter the B ′ chamber pressure cylinder, the pistonmoves to the right, the fluid in a A chamber is returned to A and the flow outlet channel. When the piston reaches the right limit position, drive shaft and driven spool valve, the piston positionback to the right position.

       Thus, slide the piston pressure cylinderto complete a cycle of action reciprocating motion. This constant cycle, the piston automatically continuous reciprocating motion. If the valve drive shaft in the middle position, the piston movement to stop. The valve plane single valve spool valve by the pressure difference, the friction sliding surface of large, action is notsensitive, easy to wear.

Planetary Gearbox

       It is also because of the defects of the structure, can not be adjusted in the small flow range, so when the machine runs at low load, the economy will reduce. Planardouble valve flap valve to increase the valve), a flow regulatingvalve performance and stress situation has improved, but there are still shortcomings big friction. Plane type valve spool valve is mainly used for steam machine. Rotary slide valve advantages isswitching action quickly, accurately, and can fine tune, but the poor sealing. It is suitable for the pressure, temperature is not high.

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