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What is the automatic controller of pneumatic valve
Source: | Author:pmt3e7315 | Published time: 2021-12-02 | 502 Views | Share:

Automatic valve assembly machine: How to convert manual valve into electric valve?

It's good to add electric actuators. It's better to find a manufacturer to make electric actuators, so that we can choose what kind of electric actuators.

The action force distance of electric valve is larger than that of ordinary valve. The action speed of electric valve can be adjusted. The structure is simple and easy to maintain. It can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal, radioactive media and other types of fluids. Due to the buffering characteristics of the gas itself, it is not easy to get stuck and damaged during the operation, but it must have a gas source, and its control system is also more complex than the electric valve. This type of valve shall generally be installed horizontally in the pipeline.

Automatic valve assembly machine: composition of electric valve device?

The electric valve is simply to use the electric actuator to control the valve, thus realizing the opening and closing of the valve. It can be divided into two parts, the upper part is electric actuator and the lower part is valve.

There are two types of electric valves, one is the angle travel electric valve: the angle travel electric actuator is used with the angle travel valve to realize the valve's 90 degree internal rotation to control the pipeline fluid on-off; The other is the straight-stroke electric valve: the straight-stroke electric actuator is used with the straight-stroke valve to realize the up-and-down action of the valve plate to control the flow of the pipeline. It is usually used on equipment with high degree of automation.

Operating principle of electric valve

Electric valve is usually connected by electric actuator and valve, and becomes electric valve after installation and commissioning. The electric valve uses electric energy as the power to connect the electric actuator to drive the valve and realize the opening and closing and regulating actions of the valve. So as to achieve the purpose of switching or regulating the pipe medium.

Solenoid valve is a kind of electric valve; The magnetic field generated by the solenoid coil is used to pull the valve core, thus changing the on-off of the valve body. When the coil is powered off, the valve core will return by the pressure of the spring.

Purpose of electric valve:

Electric valve: It is used to regulate the analog quantity of medium flow in pipes of liquid, gas and air systems, and is controlled by AI. In the control of large valves and air systems, electric valves can also be used as two-position switch control.

Electric valve: can have AI feedback signal, can be controlled by DO or AO, and can be seen in large pipes and air valves.

1. Switch type:

The electric valve is generally driven by a motor. It takes a certain time to complete the opening or closing action, which can be adjusted.

2. Nature of work:

Electric valve is generally driven by electric motor, which is relatively resistant to voltage impact. The solenoid valve is quick-opening and quick-closing. It is generally used in places with small flow and small pressure, and requires high switching frequency. The opening of the electric valve can be controlled, and the state can be open, closed, half open and half closed, which can control the flow of medium in the pipeline, but the solenoid valve can not meet this requirement.

3. Applicable process:

Electric valve is generally used for regulation, but also for switching, such as the end of fan coil.