What type of pump is suitable for materials with a viscosity of 3000 MPa·s (at 25°C)?
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This post was last edited by yxmqh on 2010-11-17 09:37. For a material with a viscosity of 3000 MPa·s at 25°C, I’m not sure whether a pneumatic diaphragm pump or a gear pump would be better Normally, at temperatures around 30°C, both types of pumps should work fine, but in winter when the temperature is just a few degrees, it may be difficult to transport the material. Please discuss it.
Based on our many years of experience, we recommend that the poster use an internal gear pump paired with a motor featuring variable speed control, which will meet the operational requirements!
Thank you all for your suggestions; I also lean towards a gear pump.
Gear pumps are also divided into internal gear pumps and external gear pumps. For external gear pumps, it is best that the viscosity of the fluid being transported not exceed 1500 cSt; otherwise, it can cause damage to the pump. Internal gear pumps can handle fluids with a much wider viscosity range, from 0 to 300,000 cSt, and they function well under such conditions
This post was last edited by Yi Hao Tu Dou on 2010-11-16 at 15:46. For fluids with a viscosity of 3,000, many types of pumps can be used for pumping them – cam pumps, screw pumps, gear pumps, and pneumatic diaphragm pumps are all suitable options. If the temperature drops, it depends on the viscosity at that time; if it’s higher than 10,000 CPS, it’s not advisable to use pneumatic diaphragm pumps. Although many manufacturers claim to be able to pump liquids with a viscosity of 20,000 CPS, it’s not cost-effective to do so. Any pump requires proper selection; you need the fluid parameters.
In our company, gear pumps and screw pumps are used for transporting high-viscosity fluids! Although diaphragm pumps can also be used, their suitability is poor!
Reply 1# zjchen: Use an internal gear pump; diaphragm pumps are generally not recommended for use when the viscosity exceeds 10,000 CST. Performance will be unstable. If the poster chooses an internal gear pump, they can contact me. Hehe.
Everyone upstairs are experts; they’ve really broadened my horizons.
What was said on the 7th floor is quite correct. For your application, there are many pumps available for selection; the most suitable ones would be single-screw pumps, twin-screw pumps, and cam-rotor pumps. However, single-screw pumps require more space, twin-screw pumps offer excellent performance but come at a higher cost, and cam-rotor pumps are also very suitable – they take up less space and have a moderate price. Yet, the technology related to these pumps isn’t very advanced in China. Imported options include Boge pumps and Vogelsang pumps； Secondly, the internal ring type internal gear pump is more suitable; it has a small size, a moderate price, and good cost-performance. So, if you have sufficient funding, you can choose a twin-screw pump; if you’re looking for cost efficiency, go with an internal gear pump. All of Warner Pump Industry: http://www.hnppump.com