ECCENTRIC ROUNDEL STRUCTURE FOR COMPRESSING DIAPHRAGM PUMP WITH MULTIPLE EFFECT

摘要

A cylindrical or inverted frustoconical eccentric roundel structure for a compressing diaphragm pump includes an annular positioning groove, a vertical or frustoconical flank and a sloped top ring which is extended between the annular positioning groove and the vertical or inverted frustoconical flank. By providing the sloped top ring, high frequency slope pulling and squeezing phenomena generated in a conventional tubular eccentric roundel are completely removed.