The principle and scope of application of the air release valve of the vacuum coating machine

The principle and scope of use of the air release valve of the vacuum coating machine: The vacuum release (filling) valve is a vacuum valve used to put the atmosphere into the vacuum system of the vacuum device of the vacuum coating equipment. Whether it is a simple or complex vacuum device, after completing the vacuum operation, if you need to replace the workpiece or take out the sample, the vacuum chamber must be put into the atmosphere, so that both sides of the vacuum chamber door are indispensable vacuum valves in the vacuum system.

The air release valve of the vacuum coating machine has two structures: manual and electromagnetic transmission. Manual air release valve structure diagram. It is composed of valve body, valve seat, valve plate, valve stem compression spring, and eccentric wheel handle. Its working principle is to rely on the tension force generated by the compression spring to overcome the atmospheric pressure and deform the sealing ring to achieve sealing. When the air is deflated, the handle is moved 90°C, the eccentric wheel compresses the spring, and the sealing ring leaves the valve port. Then you can enter the vacuum system. This valve has simple structure, reliable sealing, convenient operation, and can be used in high vacuum systems.

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The electromagnetic high vacuum charging valve of vacuum coating equipment is powered by electromagnetic force. When the power is turned on, the valve opens and introduces the atmosphere into the vacuum system from the outside. On the contrary, the power failure valve closes to isolate the vacuum system from the atmosphere.

The working medium for the vent valve of the vacuum coating machine is air, which is corrosive and dry gas without particle dust, and the temperature of the medium is -20～40℃. The applicable working pressure is 105～1.3×10-4Pa.

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Zunhua Baorui Titanium Technology Co., Ltd. is a well-known vacuum coating manufacturer, specializing in the manufacture of various vacuum coating equipment, providing industry customers with customized process solutions and coating equipment.