Introduction to the general concept of Baode solenoid valve

Baode solenoid valve
Solenoid valves are automated basic components used to control fluids and are actuators; and are not limited to hydraulic and pneumatic.
The solenoid valve consists of a solenoid and a magnetic core and a valve body containing one or several holes. When the coil is energized or de-energized, the movement of the core will cause the fluid to pass or be cut to achieve the purpose of changing the direction of the fluid. The electromagnetic component of the solenoid valve is composed of a fixed iron core, a moving iron core, a guide sleeve coil and the like; the valve body portion is composed of a valve core, a valve sleeve, a spring, a valve seat and the like. The electromagnetic components are mounted directly on the valve body to form a compact, compact combination. The solenoid valves commonly used in production have two-position two-way, two-position three-way, two-position four-way, two-position five-way, three-position five-way. The meaning of the two positions is the charging and de-energizing of the solenoid valve, and it is on and off for the valve to be controlled. Germany Baode solenoid valve - steam solenoid valve offer
As an industrial device controlled by electromagnetics, solenoid valves are used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. There are many kinds of solenoid valves, and different solenoid valves play a role in different positions of the control system. The commonly used ones are check valves, safety valves, directional control valves, speed control valves, and the like. The solenoid valve is controlled by the electromagnetic effect. The main control methods are relay control, computer program control and so on. In this way, the solenoid valve can be combined with different circuits to achieve the desired control, and the precision and flexibility of the control can be guaranteed.
Solenoid valve working principle
The solenoid valve includes an electromagnetic portion and a valve body portion. When the power is turned on or off, the moving iron core of the electromagnetic part will move, thereby driving the switching of the medium, the breaking or the flow direction of the valve part. Germany Baode solenoid valve - steam solenoid valve offer
Of course, the characteristics and principles of each type of solenoid valve will vary. Tracking the development history of solenoid valves, so far, domestic and foreign solenoid valves are divided into three categories according to the action mode: direct-acting, recoil-type (step-by-step), pilot-type, and from the valve structure and material. The difference between the difference and the principle is divided into six sub-categories (direct-acting diaphragm structure, step-and-repeat structure, pilot-membrane structure, direct-acting piston structure, step-by-step direct-acting piston structure, pilot piston structure) . We will discuss in more detail the three types of solenoid valves with slightly different modes of operation: German Baode Solenoid Valve - Steam Solenoid Valve
1. Direct-acting solenoid valve:
Principle: When energized, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve is opened; when the power is off, the electromagnetic force disappears, the spring presses the closing member against the valve seat, and the valve is closed.
Features: It can work normally under vacuum, negative pressure and low pressure, but the diameter generally does not exceed 25mm.
2. Step-by-step reciprocating (reverse type) solenoid valve:
Principle: It is a combination of direct motion and pilot type. When there is no pressure difference between the inlet and the outlet, after the power is applied, the electromagnetic force directly lifts the pilot small valve and the main valve closing member upward, and the valve opens. When the inlet and outlet reach the starting pressure difference, after the energization, the electromagnetic force leads the small valve, the pressure of the lower chamber of the main valve rises, and the pressure of the upper chamber drops, so that the main valve is pushed upward by the pressure difference; when the power is off, the pilot valve uses the spring The force or medium pressure pushes the closure and moves down to close the valve. Features: It can work reliably under zero pressure difference or vacuum and high pressure, but the power is large, and it must be installed horizontally.
3. Pilot solenoid valve:
Principle: When energized, the electromagnetic force opens the pilot hole, the pressure in the upper chamber drops rapidly, and a pressure difference between the lower part and the lower part is formed around the closing member. The fluid pressure pushes the closing member upward to move the valve to open; when the power is off, the spring force leads the pilot. The hole is closed, the inlet pressure is quickly passed to the upper chamber through the bypass hole, and a lower low and high pressure difference is formed around the valve closing member, and the fluid pressure pushes the closing member downward to close the valve.
Features: High fluid pressure range, can be installed arbitrarily (customized) but must meet fluid pressure difference conditions
Baode solenoid valve
Solenoid valve performance characteristics
Although the solenoid valve family is large and complex, at the beginning of the production of solenoid valves, people have a basic set of performance. Overall, all types of solenoid valves have four distinct performance characteristics: safety, suitability, reliability, and economy. This is also the primary consideration when choosing a solenoid valve.
Safety is mainly based on media properties, application environment, and nominal pressure. Applicability is mainly based on media characteristics, pipeline parameters, environmental conditions, power supply conditions, and control accuracy. The reliability refers to the working life of the solenoid valve. In terms of working system and working frequency, there are also operational reliability and economy. Here, economics refers not only to product prices, but also to the performance-price ratio of products and the comprehensive cost-price ratio.