Why are single-screw pumps designed to be eccentric?
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This post was last edited by Xiao Po Hai GK on 2015-7-27 00:13. Dear fellow sailors, I have the following questions regarding screw pumps: 1. Why are single-screw pumps designed to be eccentric? What is the function of a universal joint? 2. We have recently transferred a Alfa Laval single-screw pump from the industrial water workshop to be used for transporting dirty oil (containing a large amount of flocculent and particulate impurities). We are not sure whether it is theoretically feasible to use this type of pump for such purposes 3. Could any member provide some information on Alfa Laval screw pumps? (We’ve lost our documents; those from other manufacturers will do as well. I mainly want to understand the structure and working principle of screw pumps.) 4. What are the precautions to take during the operation of screw pumps, and how are common accidents handled? 5. What is a G-series single-screw pump? Thank you all for your help and answers!
This post was last edited by Ah on 2015-7-27 08:32. There is no issue with the transmission medium; dry operation must be avoided.
In twin-screw and triple-screw designs, the shafts are straight while the threads are helical; in contrast, in single-screw designs only the shaft is helical. Can the components connected to them still be concentric in such a case?
When a single-screw pump is in operation, the rotor rotates and swings simultaneously, working in conjunction with the stator
Yes, why was it designed this way?
The solenoid rod is spiral-shaped, but its axes are at least concentric. I have never seen the rotor and stator out of alignment, unless it’s a cycloidal reducer