Do you know The main classification of electromagnetic

        Solenoid valve with electromagnetic control of industrial equipment,is used to control fluid automation infrastructure components,belonging to the actuator, is not limited to hydraulic, pneumatic. By adjusting the medium in industrial control system, flow direction,speed and other parameters. Solenoid valve can be matched with different circuits to achieve the desired control, and control the accuracy and flexibility are guaranteed. There are many kinds ofelectromagnetic valve, electromagnetic valve, different role indifferent position control system, the most commonly used one-way valve, safety valve, directional control valve, speed control valve.

     The working principle of editing

    Solenoid valve in a closed chamber, in different locations to open a hole, each hole connected to different pipe, cavity is in the middle of the piston, both sides are two electromagnets, which faces the magnet coil is energized valve will be attracted to which side, toopen or close the oil drain holes in different through the control valve moves, and an oil inlet hole Shichang opened, hydraulic oilinto the oil will be different, then the oil pressure to push the piston of the oil cylinder, the piston drives the piston rod, piston rod drives the mechanical device. This control solenoid current on-off control of the mechanical movement.

     Main classification

     1.Solenoid valve theoretically divided into three categories:

      1).Direct acting solenoid valve:

      Principle: power, the electromagnetic coil of electromagnetic force to close the cases filed, from the seat the valve open; power, the electromagnetic force disappears, the spring pressure to close the file on the seat, the valve closed.

      Features: in a vacuum, negative pressure, zero pressure can work,but the path is generally not more than 25mm.

      2).Step direct acting solenoid valve:

   Principle: it is a direct acting and the principle of pilot combination,when the entrance and exit when no pressure, electricity, the electromagnetic force directly to the pilot valve and main valve lift off pieces in order, the valve opens. When the entrance and outlet pressure to start, the power, the electromagnetic force pilot valve,main valve chamber under increased pressure, the chamber pressure drops, thus the use of pressure to push up the main valve; power, the pilot valve with a spring or to medium pressure to promote the closure of parts, moving down, the valve closes.

       Features: zero pressure or vacuum, high pressure can also be *action, but the power is larger, the level required to be installed.

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      3).Pilot type solenoid valve:

      Principle: power, the electromagnetic 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 the closure of parts moving up, the valve open; power, the spring force of thepilot hole closed, entrance pressure chamber through the bypass hole quickly formed under low on the high pressure around the closed valves, fluid pressure to promote the closure of parts moving down, close the valve.

Features: limit the scope of a high fluid pressure, can be arbitrarily install (need to customize) but must meet the conditions of fluid pressure.

    2.Solenoid valve and the valve from the different structures and materials on, divided into six branch categories: diaphragm structure, step by step direct acting diaphragm structure, pilotdiaphragm structure, direct acting piston structure, step by stepdirect acting piston structure, the pilot piston structure of direct action.

     3.Solenoid valve with functional classifications: water solenoid valve, electromagnetic valve, steam refrigeration electromagnetic valve, cryogenic solenoid valve, gas solenoid valve, solenoid valve,electromagnetic valve, ammonia gas solenoid valve,electromagnetic valve, liquid micro electromagnetic valve,electromagnetic valve, solenoid hydraulic valve normally open solenoid valve, oil solenoid valve, solenoid valve, high voltage DCelectromagnetic valve, explosion-proof solenoid valve.

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