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incline screw conveyor horsepower

incline screw conveyor horsepower

incline screw conveyor horsepower

(OP)
I have a 10" screw conveyor moving cement from a silo to a weigh batcher.  I want to incline the screw conveyor and increase the rpm to make up for the lost volume caused by the incline.  I can find the formulas for friction and material horsepower in the horizontal condition but nothing on the hp to lift the volume.  Any suggestions?

RE: incline screw conveyor horsepower

Dear conveyorbud:
                 From CEMA Standard No.350:

HP of lift = (lbs/min)*(actual feet of height lift)/33,000
(For small incline, usually, the power increase is low).

¿Is a tubular (pipe trough) screw conveyor? Up to 20º increase rpm in 15%. 30º increase 25%.
If standard U-trough, limit slope is 25º, and preferibly not over 15º.

I hope it helps you.

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