The refrigerating solenoid valve is suitable for non-pressure difference or low pressure system. The pulse solenoid valve inputs the coil of the solenoid valve into the forward pulse signal through the wire, and the working magnetic flux generated by the coil makes the moving core suck and open the valve.
Characteristics
One: applicability
The fluid in the line must match the medium calibrated in the selected solenoid valve series.
The temperature of the fluid must be less than the calibration temperature of the solenoid valve selected.
Solenoid valves allow liquid viscosity to be generally below 20 CST, and greater than 20 CST should be noted.
Working pressure difference, the maximum pressure difference of the pipeline should be less than 0.04MPa, such as ZS, 2W, ZQDF, ZCM series and other direct-acting and step-by-step direct-acting type; when the minimum working pressure difference is greater than 0.04MPa, the pilot type can be used. Differential) Solenoid valve; the maximum working pressure difference should be less than the maximum calibration pressure of the solenoid valve; the general solenoid valve is one-way work, so pay attention to whether there is a back pressure difference, if there is a check valve installed.
1. A combination of direct-acting open-valve and pilot-operated open-valve two-piece recoil-type special structure;
2. The zero pressure can also open the main valve, the low pressure difference flow is large, and the application range is wide;
3. Different mediums are used, and the targeted sealing is used to improve the rationality of the solenoid valve;
4. The valve plug adopts a molding process to further improve the life and reliability of the solenoid valve;
5. The use of precision cast copper body, the appearance is exquisite and beautiful.
working principle
The refrigerating solenoid valve is an automatic basic component used to control the direction of the fluid. It is an actuator; it is usually used on mechanical control and industrial valves to control the direction of the medium to control the valve switch. There are closed chambers in the solenoid valve. There are through holes in different positions. Each hole leads to different oil pipes. The middle of the cavity is a valve. On both sides are two electromagnets. Which side of the magnet coil is energized and the valve body will be attracted. On which side, by controlling the movement of the valve body to block or leak different oil drain holes, and the oil inlet hole is normally open, the hydraulic oil will enter different oil drain pipes, and then the oil pressure will push the oil cylinder. The piston, which in turn drives the piston rod, drives the mechanical device. This controls the mechanical motion by controlling the current of the electromagnet. Only the electromagnetic valve is applied by the electromagnetic force to the iron core sealed in the magnetic isolation bushing of the electric regulating valve. There is no dynamic seal, so the external leakage is easy to block. The electric valve torque control is not easy, it is easy to produce internal leakage, and even the stem of the valve stem is broken; the structure of the electromagnetic valve is easy to control the internal leakage until it drops to zero. Therefore, solenoid valves are particularly safe to use, especially for corrosive, toxic or high temperature media. The solenoid valve itself is simple in structure and low in price, and is easy to install and maintain compared to other types of actuators such as regulating valves. What's more remarkable is that the self-control system is much simpler and the price is much lower. Since the solenoid valve is controlled by the switching signal, it is very convenient to connect with the industrial computer. In today's era of computer popularization and price drop, the advantages of solenoid valves are even more obvious.
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