| 摘要 |
A four-compression-chamber diaphragm pump with multiple effects comprises: an eccentric roundel mount having four cylindrical eccentric roundels; a pump head body having four operating holes; and a diaphragm membrane having four annular positioning protrusions. A basic curved groove or a different first vibration-reducing positioning structure encloses each operating hole and is disposed on a circumference of the operating hole while a basic curved protrusion or a different second vibration-reducing positioning structure is provided on the diaphragm membrane to be adequately mounted in the corresponding groove or the different first positioning structure on an assembly. Consequently, a length of a moment arm from the basic curved protrusion or the different vibration-reducing positioning structure to each annular positioning protrusion extended downwards and disposed on the diaphragm membrane is shortened. Therefore, vibration noise and resonant shaking are reduced when compared to a conventional four-compression-chamber diaphragm pump. A cylindrical eccentric disk plate comprises an annular positioning groove to accommodate one annular positioning protrusion extended downwards from the diaphragm membrane, and an inclined upper ring extended between the annular positioning groove of the eccentric disk plate and a vertical side surface or an inverted truncated conical side surface, and consequently extends a service life of the four-compression-chamber diaphragm pump. |
