Selection of submersible pumps
Thread Content
The operating conditions are as follows: the medium is 98% concentrated sulfuric acid, and the customer requires a submersion depth of 2.9 meters. Fluoroplastic submersible pumps can only operate at a submersion depth of up to 1.5 meters, so they are not suitable for this application. What material can be used as a substitute now?
Why use a submersible pump? A self-priming pump would be much better. It is convenient for both installation and repair. Basically, all self-priming pumps made of plastic will work
I share the same opinion as you; the client is stubborn and insists on using a submersible pump. .
But it must be a submersible pump; it’s okay if the shaft is a bit longer, right? Why did he say it can only be 1.5 meters? Is the motor very small? ?
It’s okay to make it longer. But we think about our customers in the long term. For values over 1.2 on my end, I recommend using a self-priming pump or purchasing one from another manufacturer. The 2900-rpm motor in our home is too long; the vibrations can easily cause the shaft to break.
Ask the cast iron manufacturers how long it is. o(∩_∩)o Haha
Check the temperature; if it’s at room temperature, 904 or 904L can be used；
For a pump of such length, an additional bearing can only be installed at the impeller; it can be a graphite bearing. But just like in our reaction vessels, if the sealing is not proper, sulfuric acid will enter this shaft section that lacks corrosion protection, and very quickly the shaft will shrink, leading to vibration
Fluorinated lining won’t work. I do it myself.
I have thought about it. . But the other party said that there must be no metal in the pool. .