Electromagnetic coils have great help for the development of technology.

Electromagnetic coils - the development of the simplification of the direction to the essence must be simple, only simple can be passed on for a long time. This is also the permanent pursuit of scientists and engineers.

(1) Simplified control loop In the past, a large number of actuators used pneumatic and electric control loops, which increased the complexity of the system. The pilot solenoid valve formed a control loop using the working medium itself in the valve, and the structure was very simple. In the past, many technical parameters of electromagnetic valves at home and abroad were also limited. Now the domestic solenoid valve diameter has been extended to 30Omm; the medium temperature is as low as 200 ° C, up to 450 ° C; the working pressure is from vacuum to 25 MPa. The action time is from ten seconds to a few milliseconds. The new development of these technologies has completely replaced the two large-volume quick-disconnect valves and pneumatic on-off valves, electric on-off valves, which can also replace the continuously adjusted pneumatic and electric control valves. (How can we better meet the adjustment accuracy requirements, as described below). In foreign textile, light industry, urban construction and other industries, a large number of solenoid valves have been used, and the metallurgical and chemical industries have taken the lead in using more and more solenoid valves in auxiliary systems.

(2) Simplify the automatic control valve of the pipeline system. When working, some auxiliary valves and fittings must be used on the pipeline. For example, the isolated bypass shown in Figure 1 is a typical installation method. Three manual valves are required. The manual valve 1 is a bypass valve and is manually reserved. The manual valves 2 and 3 are isolation valves to ensure online maintenance of the automatic control valve 5. Of course, you have to have two tees 4 and a union 6. This type of piping system occupies a large space, and installation is time consuming and easy to leak. The ZDF series of multi-function solenoid valves have been awarded the Geneva International New Technology Gold Award for the ingenious elimination of these additional accessories. A filter is required on the front of the automatic control valve. The use of multiple self-control valves in combination often requires the installation of check valves to prevent interference between the pipes. One-way solenoid valves, combination solenoid valves, and solenoid valves with filtration have now played a role in simplifying piping.

(3) Simplified valve structure and process The solenoid valve is an automatic control valve that is simple in principle and structure, but further simplified. The solenoid valve of the washing machine and refrigerator in the household appliance industry, the structure and process of its components are suitable for mass production. Ordinary solenoid valve coil components have been packaged in plastic to reduce the breakage of the lead wire, and at the same time easy to achieve waterproof, explosion-proof and other protection requirements. Valve body, valve cover and other components have been precision casting, forging and other processes, engineering plastic solenoid valves have also been on the market. Domestic explosion-proof solenoid valves are not only explosion-proof, but also encapsulated and intrinsically safe. High pressure and high temperature solenoid valves have also appeared to simplify the structure and process.

Second, the development of intelligent direction This mainly refers to how the solenoid valve can better cooperate with the intelligent instrument to improve the control accuracy and reliability of the system. It is generally considered that the position adjustment is difficult to achieve high precision. However, in many cases, the appropriate method can be used to achieve the required high precision, and the solenoid valve technology is greatly saved.