Problems with the vacuum pump (not sure whether it should be placed in the utilities section or the mechanical equipment area)
Thread Content
After long-term use of our company’s vacuum pumps (of various types), the temperature of the cooling water rises, and in such cases, tap water is used to lower the temperature. It leads to waste in tap water usage and an increase in wastewater volume (the vacuum pump draws out some fluid, so the water inside the pump chamber cannot be reused). Later, technical modifications were made to the Roots pump: coils were added inside the water tank, and circulating water was used to cool them. However, after a short time, scale formed on the outside of the coils, resulting in poor cooling efficiency. I’d like to ask everyone how to deal with such problems – should we use tap water to cool it down, or is there a better method? I hope to get everyone’s help – please reply or send it to my email. Thank you! yzkingsoft@vip.qq.com
1) If you have a refrigerant system there, a heat exchanger can be installed to cool the working fluid. 2) If there is no refrigeration equipment, soft water can be used along with a tank and coiled tubes to achieve cooling
It’s best to check if there is wastewater with a more suitable water quality available as a substitute.
Please provide more detailed information about your situation; there should be a water quality that suits your needs. What kind of factory do you have, and has the water quality in the surrounding area been analyzed? Such as pH, turbidity, hardness (calcium, magnesium, etc.), alkalinity, temperature, etc.
Thank you to the two people above. On the 2nd floor, the Roots pumps used for distillation in our company have coiled tubes in their water tanks, which are cooled using circulating water at a temperature of 20 to 30°C; however, scaling tends to form inside these coiled tubes. . . The quality of the local saline-alkaline water is too poor, and the temperature is too high as well.
What I mean is that when the temperature of the circulating water is high, the vacuum level of the Roots pump is insufficient.
Your circulating water temperature is only 20–30 degrees, so scaling should not be severe. It’s possible that the flow rate is too low; check that.