Vibration-reducing structure for five-compressing-chamber diaphragm pump

摘要

A vibration-reducing structure for five-compressing-chamber diaphragm pump features a pump head body and a diaphragm membrane. The pump head body includes five operating holes and a basic curved dent circum-disposed around the upper side of each operating hole. The diaphragm membrane includes five equivalent piston acting zones such that each of which has a acting zone hole with an annular positioning protrusion for each acting zone hole and a basic curved protrusion circum-disposed around each concentric annular positioning protrusion in corresponding position with each mating basic curved dent in the pump head body. Thereby, five basic curved protrusions completely insert into corresponding five basic curved dents with a short length of moment arm in generating less torque, which is obtained by length of moment arm multiplying a constant acting force and primarily causes adverse vibration. With less torque, the vibration strength of the five-compressing-chamber diaphragm pump is substantially reduced.