What is the difference between screw and screw pump?
4, threaded teeth are: triangular thread, trapezoidal thread, rectangular thread, serrated thread ... ... and so on
The principle of the screw pump: Although the basic shape of the screw pump and drive the thread is almost, there are helix, but the screw pump at work, no nuts, can be understood as: to pump the medium is "nut"
5, the number of threads (also known as: the number of lines): a single head thread (for fastening), long thread (for fast drive)
3, in special circumstances, can reverse drive, such as: large lead screw, long thread, ball screw thread vice.
