Solenoid valve:
Solenoid valve is a corrosive, explosive, high pressure environment in the work of the equipment, it has an important role in industry, construction, medical industry and other fields. The more frequent use of two three-way solenoid valve He two five-way solenoid valve, many users are not clear which "bit" and "through" what is the difference.
Solenoid valve "through" and "bit" is an important concept of pneumatic directional solenoid valve. Different "through" and "position" constitute different types of pneumatic directional solenoid valve. Often referred to as "two-position valve", "three-position valve" refers to the spool of the directional valve has two or three different working positions.
The so-called "two-way valve", "three-way valve", "four-way valve" refers to the valve body of the directional valve has two, three, four different and can be connected to the system with different oil or gas we connected to the interface, different oil or gas we connected to the interface. or gas we connected to the interface between the different oil / gas can only be shifted through the spool valve port switch to communicate the front of the "several positions", you want to see the valve has several working conditions, it can be said to be a few positions, such as the symbols of the pneumatic components, it is better to understand the symbols on the diagram on behalf of the body of the valve square (with arrows or T lines) there are several Is a few bits. And the latter "a few pass", is on behalf of one of the square has a few points (and the arrow line and the T line intersection point), is a few pass.
The meaning of the graphic symbols is generally as follows:
(1) the box indicates the valve's working position, there are a few boxes means that there are a few "bits";
(2) the arrow in the box indicates that the oil circuit is in the state of connection, but the direction of the arrow does not necessarily mean that the actual direction of the liquid flow;
(4) The number of interfaces connected to the outside of the box is a few, which means that a few "through";
(5) The number of interfaces connected to the outside of the box is a few. p>
(5) in general, the valve and the system supply oil or gas connected to the inlet / inlet with the letter p; valve and the system back to the oil / gas connected to the return oil / back to the port with t (sometimes with o); and valves and actuators connected to the oil / gas port with a, b and so on. Sometimes on the graphic symbols with l to indicate the leakage of oil port;
(6) directional valves have two or more working positions, one of which is the normal position, that is, the spool is not subjected to maneuvering force in the position. The center position in the graphic symbol is the normal position of a three-position valve. A two-position valve that utilizes spring reset has its normal position as the path state in the box near the spring. When drawing a system diagram, the oil/air lines should generally be connected to the normal position of the directional valve.
Each product has different types of products, these different types of products make the product more competitive, for the solenoid valve, it is now playing an increasingly important role in many areas, but in the face of increasing market pressure, these products need to get more attention and attention.