Characteristics and Working Principle of Electric Proportional Valve
The electric proportional valve (Electromagnetic Proportional Valve), also known as the electromagnetic proportional valve, is a device that uses an electromagnetic drive mechanism to control the fluid flow. They are a type of proportional valve and are used to precisely control the flow of liquids or gases. The opening and closing degree of the valve is adjusted according to the input electrical signal to achieve precise flow control.
The following are the main characteristics and working principles of the electric proportional valve:
Characteristics:
1. Precise control: The electric proportional valve can provide highly precise fluid flow control and is suitable for applications that require precise control.
2. Fast response: They usually have a relatively fast response time and can adjust the flow instantaneously, which is suitable for scenarios that require quick response.
3. Continuously adjustable: Different from the discrete solenoid valve, the electric proportional valve can continuously adjust the flow rather than just opening or closing.
4. Electronic control: These valves are usually equipped with electronic controllers that can receive and process the input electrical signals to achieve the adjustment of the flow.
5. Wide application: Electric proportional valves are applicable in multiple fields, including industrial automation, medical equipment, laboratory instruments, automotive manufacturing, and so on.
Working principle:
The working principle of the electric proportional valve is based on the electromagnetic drive mechanism. The main components include:
1. Electromagnetic coil: The electric proportional valve contains an electromagnetic coil, and when the coil is energized, a magnetic field will be generated.
2. Valve: The valve consists of a movable valve core or valve cavity, which can move in the valve body to change the size of the fluid passage.
3. Feedback sensor: Usually, the electric proportional valve is equipped with a feedback sensor to monitor the flow or pressure of the fluid and send the feedback information back to the control system.
4. Control signal: The control system sends a control signal to the electromagnetic coil through the electronic controller to tell the electromagnetic element how to adjust the opening and closing degree of the valve to achieve the required flow or pressure.
When the control signal is transmitted to the electromagnetic coil, it will change the intensity of the magnetic field, and then affect the position of the electromagnetic element. This position change will lead to a change in the opening and closing degree of the valve, thereby adjusting the fluid flow. The feedback sensor continuously monitors the flow or pressure and compares the actual value with the required value. The control system continuously adjusts the operation of the electromagnetic element according to this feedback information to keep the system in the desired state.
In conclusion, the electric proportional valve is a high-precision and continuously adjustable fluid control device with a wide range of application fields and is used to achieve precise flow control.
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