Excessive water temperature will inevitably cause water vaporization and evaporation, and the working conditions of negative pressure will further aggravate the occurrence of such vaporization and evaporation, resulting in excessive water vapor in the vacuum pump body. In this way, the vacuum pump sucks in excessive water vapor while sucking in, but seldom sucks out, resulting in a very low vacuum degree of the system. There are two main factors that cause the water temperature to be too high. One is that the water supply temperature is too high; the other is that the water temperature rises in the working process.
To prevent excessive water temperature, we must do the following:
1. Reduce the temperature of water supply;
2. Keeping the water intake and outlet passages open, especially the outlet passages (two drainage holes at the bottom of the pump body) must be kept open at any time, and can not blindly block or reduce its circulation area;
3. Adjust the process to reduce the material temperature of the main engine as much as possible, so as to reduce the suction temperature of the vacuum pump.
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