China Solenoid Valve Manufacturer, Supplier, Wholesaler
Solenoid valve works
Is used to control the flow of the automation infrastructure components, belonging to the actuator; not limited to hydraulic, pneumatic. Used to control the hydraulic flow direction, the plant's machinery is generally controlled by a hydraulic cylinder, so it will use it works, there are the closed chamber, in different locations to open a hole, each hole is toward different the tubing, the middle valve chamber, both sides are two electromagnets, which face the magnet coils will be attracted to the body which side, by controlling the movement of files live body or leakage of oil drain holes of different, but into the hole is always open, hydraulic fluid will enter a different row of tubing, then through the oil pressure to push oil just the piston, the piston and drive rod, piston rod drive mechanism moving. This by controlling the solenoid current to control the mechanical movement.
The history goes back so far from home and abroad, the principle is divided into three categories (ie: direct acting, pilot-step child), and from the valve structure and materials with the principle of distinction between different Class is divided into six branches (direct-acting diaphragm structure, step by step re-sheet structure, membrane structure, leading, direct-acting piston structure, step by step direct-acting piston structure, the pilot piston structure).

Direct Action:
Principle: power, the Solenoid coil of Solenoid force to lift off pieces from the seat, the valve open; power, the Solenoid force disappears, the spring pressure to close the file on the seat, shut down.
Features: In a vacuum, negative pressure, zero pressure can work, but the path is generally not more than 25mm.

Distribution of direct-acting:
Principle: It is a direct-acting and pilot-combining principle, there is no pressure when the inlet and outlet, the power, the Solenoid force directly to the pilot valve and main valve off a small piece in turn lift the valve open. When the inlet and outlet pressure to start, the power, the Solenoid force small pilot valve, main valve chamber under increased pressure, the chamber pressure drops, thus the use of pressure to open up the main valve; power, the pilot valve with a spring force or push off pieces of media pressure, moving down, so close.
Features: zero pressure or vacuum, high pressure can also be action, but the power is larger, the level required to be installed.

Pilot:
Principle: power, the Solenoid force to open the pilot hole, the chamber pressure to drop rapidly in close formation around the lower parts of high pressure, fluid pressure to promote off pieces to move up, open; energized, the spring forces the pilot hole closed, the inlet pressure chamber through the bypass hole quickly formed around the valve off on the high-low under the pressure, fluid pressure to promote off pieces down, shut down.
Features: maximum high pressure fluid can be any installation (to be customized), but must meet the conditions of fluid pressure.