How to choose a pump for high-viscosity fluids
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For high-viscosity fluids such as dishwashing liquid or high-concentration PVA, whose viscosity can reach 200,000, what type of pump should be used? Does anyone have any relevant experience? We tried internal-loop pumps before, but the results were not good. The required head is quite high, within 10 meters, and the flow rate needed is 1 ton per hour at room temperature
The 1T/HR flow rate is too low. For applications with corrosion, a diaphragm pump is recommended; for those without corrosion, a gear pump can be used.
With such high viscosity, a gear pump is recommended; since dishwashing liquid is alkaline, stainless steel material should be used
Diaphragm pumps, piston pumps, hose pumps, and gear pumps are all available
What’s the outlet pressure approximately? Is the flow rate only about 1 m3/h?
This post was last edited by qugd on 2016-8-25 at 15:40. Since the head is not high, gear pumps or screw pumps are better choices for media with high viscosity. Piston pumps, due to their reciprocating motion, make it difficult for one-way valves to return to their position in time during the piston’s retraction phase, resulting in very low efficiency.
The viscosity is too high; it has no fluidity and can’t flow into the pump. It seems that the gear pump also doesn’t have much suction power