A solenoid valve is an electromagnetically controlled industrial equipment. It is an automated basic component used to control fluids. It belongs to an actuator. The pneumatic solenoid valve is one of them. It blocks or leaks different oil discharges by controlling the movement of the valve body. The oil inlet hole is normally open, the hydraulic oil will enter different oil discharge pipes, and then the piston of the oil cylinder is pushed by the oil pressure of the pneumatic solenoid valve so that the current of the electromagnet that controls the pneumatic solenoid valve is controlled. Mechanical movement of the entire solenoid valve.
Features
It can work normally in a vacuum, negative pressure, and zero pressure, but the diameter generally does not exceed 25 mm.
It can also operate under zero pressure difference or vacuum and high pressure, but the power is large and it must be installed horizontally.
The upper limit of the fluid pressure range is high, which can be installed arbitrarily (need to be customized) but must meet the fluid pressure differential conditions.
Principle
There is a closed cavity in the pneumatic solenoid valve, and there are through holes in different positions. Each hole of the pneumatic solenoid valve leads to a different trachea. The middle of the cavity is a valve, and the two sides are two electromagnets. Which side will the valve body be attracted to;
The pneumatic solenoid valve blocks or leaks different exhaust holes by controlling the movement of the valve body, and the intake holes are normally open, and the high-pressure gas will enter different exhaust pipes, and then be pushed by the air pressure of the pneumatic solenoid valve. The piston of the cylinder, so that the current through the electromagnet that controls the pneumatic solenoid valve controls the mechanical movement of the entire solenoid valve.
The working principle of the pneumatic solenoid valve
When we talk about the working position of the pneumatic solenoid valve (the solenoid valve is on or off), it actually refers to the position of the valve core of the pneumatic solenoid valve.
The spool is in the A position when the coil is de-energized and in the B position when the coil is energized. When the valve cores of the pneumatic solenoid valve are in different positions, the ports on the valve body can be turned on or off. For example, a two-position solenoid valve means that the spool of the solenoid valve has two different working positions (open or closed). It's the opening and closing of the valve. Two-way and three-way solenoid valves refer to two or three passage ports on the valve body of the pneumatic solenoid valve. The two-position two-way solenoid valve has two channels, one in and one out, and is the most common pneumatic solenoid valve; the two-position three-way solenoid valve has three channels, one in and two out, and the two out channels are corresponding to Connections are normally open and normally closed. Similarly, three-way, four-way, and five-way also refer to the number of fluid passages on the valve body.
