Gas ball valve can accelerate the extraction of steam without polluting the oil
Source：http://www.mu263.comRelease Time：2018-06-03
A small hole is drilled in the compression chamber of the oil seal mechanical vacuum pump, and a regulating valve is installed. When the regulating valve is opened and the intake air amount is adjusted, when the rotor is turned to a certain position, air will enter the compression chamber through this small hole. To reduce the compression ratio, so that most of the steam will not condense together with the incoming gas is excluded from the pump. The valve that plays this role is called the gas ballast valve.
Gas ball valve can accelerate the extraction of steam without contaminating the oil. If the vacuum pump only draws out permanent gas, the gas does not liquefy due to the increase in pressure, so there is no degradation of the pump oil. However, if this pump is used for vacuum drying or drawing out humid air, the gas will have not only permanent gas but also steam. If steam is pumped out with a pump without a ballast, the steam will By liquefying and dissolving in the oil, the vacuum properties of the oil deteriorate, thereby reducing pumping speed and vacuum.
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