Peristaltic Pump for 2-part Epoxy

[automationbabe]

I've never use one of these pumps and would like help going the right direction.

The 2-part epoxy needs to be dispensed at a 4:1 ratio. If the pump were to run at all times, it would need total dispense rate of one GPH with ability to increase or decrease rate as needed.

Please let me know if I should post this elsewhere. Thanks in advance.

 

[MikeHalloran]

IF the 2 parts have nearly the same viscosity, and are pumped through very similar fluid circuits, you might get decent results with a five- tube pump, using five identical tubes and five identical dispense nozzles.

You will get erratic results if you try to use a big tube and a little tube, or two pumps at different speeds.

Contrary to popular belief, peristaltic pumps' delivery per rotation is sensitive to viscosity and backpressure. It also changes with time as the tubing 'ages'.






Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA

 

[automationbabe]

The viscosity is not the same. Part A is 1700cps and part B is 100cps.

The application suggested for this pump is to transfer each material from a 55 gallon drum to their own 5 gallon bucket. The buckets are currently connected to a system that dispenses the material at the correct ratio. I just need to make sure the 5 gallon buckets remain filled.

I can use two pumps for the different materials.

Thanks again for your help.

 

[unclesyd]

Here two companies that we used especially the Masterflex.

http://www.watson-marlow.com/index-us.html

These people have a lot of information on the site and were good to work with at one time.

http://www.barnant.com/index.asp

 

[kenf2e]

Another good choice on a peristaltic pump would be PeriFlo at

http://www.periflo.com.

They have a complete line of metering style hose pumps specifically for tough applications.