Suitable for Liugong excavator accessories SY215/235 ratio solenoid valve 1017628

Proportional valve and solenoid valve difference

     Proportional valves are divided into direct proportional valves and reverse proportional valves. Adjustable air pressure. The solenoid valve can only function as a switch. The solenoid valve is a valve that can only be powered on and off, and the proportional valve is a valve that can control the opening degree. To put it simply, the proportional valve is used to adjust the pressure. Speed. Ordinary solenoid valve reversing action

The working principle of the proportional valve

      The working principle of the proportional valve is mainly to change the flow into the system by adjusting the opening of the proportional valve. The proportional valve is called the electro-hydraulic proportional valve, which is a kind of hydraulic valve that converts the input electrical signal into force or displacement proportionally, so as to continuously control the pressure, flow and other parameters. The working principle of the proportional valve is mainly to change the flow into the system by adjusting the opening of the proportional valve. The proportional valve is composed of DC proportional electromagnet and hydraulic valve. The hydraulic valve part is little different from the general hydraulic valve, and the DC proportional electromagnet is different from the electromagnet used in the general solenoid valve, and the displacement output and suction output can be obtained proportional to the given current by using the proportional electromagnet. Proportional valve according to its control parameters can be divided into proportional pressure valve, proportional flow valve, proportional direction valve three categories. Proportional control valve is a control valve that continuously and proportionally controls the flow, pressure and direction of the hydraulic system according to the input electrical signal, and its output flow and pressure can not be affected by load changes. Compared with ordinary hydraulic components, the electrical signal is easy to transfer and can be easily controlled remotely. It can continuously and proportionally control the pressure and flow of the hydraulic system, realize the control of the position, speed and force of the actuator, and reduce the impact of pressure change. The number of components is reduced and the oil circuit is simplified. At the same time, the use conditions and maintenance of the electro-hydraulic proportional valve are the same as that of the general hydraulic components, and the anti-pollution performance is stronger than that of the servo valve, and the work is reliable.