dry vacuum pump of two structures
Posted on Mon, 26 Oct 2020 07:08:12 +0000
What are the two structures of dry vacuum pump? 1. Screw type In the screw compressor, the number of rotor turns is within one circle, while that of screw vacuum pump is more than two as shown in Fig. 6. In this way, the return flow can be reduced and the compression ratio can be increased. The s...
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