How should one choose a pump with significant viscosity variations for testing?
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For glues with viscosities ranging from 10,000 to around 50,000, and operating temperatures from room temperature up to 100 degrees Celsius, do you think gear pumps or screw pumps are better?
It must be a gear pump, with a thermal insulation jacket. Triple sealing is used for the sealing.
Could you help explain what a triple seal is? Packing seal, mechanical seal? Thank you.
The working conditions described by the original poster are a bit unclear. \"A glue with a viscosity of around 10,000 to 50,000, at temperatures ranging from room temperature to 100 degrees Celsius.\" Does that mean the minimum viscosity of such glue is 10,000? If that is the case, it is recommended to use an internal meshing high-viscosity gear pump, as it is more suitable for such operating conditions – especially for adhesives with a large range of viscosities; there are precedents for this. The viscosity requirement for gear pumps used for heat preservation is below 1500 CST, so it is not possible to meet the conditions specified by the original poster. As for sealing, using packing will be no problem!