Cómo distinguir entre la válvula de bola eléctrica y la válvula solenoide
Electric ball valve is often used in our life, but we often can't distinguish the difference between electric ball valve and solenoid valve. Next, I'll explain how to distinguish the difference between electric ball valve and solenoid valve.
Let's take a closer look at these two devices. Although the functions of electric ball valve and solenoid valve are almost the same, their action mechanism is very different. The so-called electric ball valve mainly refers to that the valve body is in the shape of ball head and the motor is used as the driving source. The follow-up mechanism drives the opening or closing of the valve body through the positive and negative rotation of the motor. How to judge whether the valve body is fully open or closed depends on the travel switch (microswitch) or housing displacement sensor. The solenoid valve is built in the classic form, and its driver is a solenoid coil.
El electroimán (en su mayoría cónico) se tira y se libera energizando o desenergizando la bobina electromagnética para cumplir con los requisitos de acción de apertura / cierre. Obviamente, en comparación con el proceso de acción de la válvula de bola eléctrica, la acción de la válvula solenoide tiene solo dos estados de encendido y apagado, y no existe un proceso intermedio.
Next, we can learn about the work and life scenarios in which these two technical devices are economically applicable. In view of the different research on the action development mechanism of the above two treatment devices, the electric ball valve is suitable for working and learning environments with large flow and high pressure, such as China's industrial drainage and irrigation management system; Oil filling system and other service occasions. Since the closing of solenoid valve only depends on its internal reaction spring (as shown in Figure 3), it is generally mainly used in low-voltage network systems below 1MPa. In addition, the solenoid valve is only in the limit motion state by two methods: on and off, so it is mostly used in civil occasions, such as the water make-up and drainage solenoid valve in household automatic washing machine; Solar water supply solenoid valve, etc. In addition, due to the complex structure of electric ball valve and the need to control according to the auxiliary design circuit of peripheral equipment, its price level is much higher than that of solenoid valve, and its use in civil occasions is also limited by intangible assets.
Ya sea una válvula solenoide o una válvula de bola eléctrica, se puede dividir en tipo CA y tipo CC según el tipo de fuente de alimentación.
Finalmente, se señala que el sistema de control industrial actual adopta una válvula de bola eléctrica PID para el control preciso del flujo de líquido. Su principio de funcionamiento es utilizar las características de la válvula de bola eléctrica ordinaria con proceso de acción intermedia y utilizar un circuito electrónico (en forma de microordenador de un solo chip) para controlar el movimiento del motor, es decir, para controlar el grado de apertura / cierre del cuerpo de la válvula.