ELECTROMAGNETIC OSCILLATING DIAPHRAGM PUMP

摘要

Provided is an electromagnetic vibrating diaphragm pump capable of preventing fluid such as air from leaking to an oscillator side. A supporting member 2a has a magnet 2b2 provided thereon, and a disc-shaped diaphragm 3 is fixed to mounting screw parts 2c at both ends of the supporting member 2a of the oscillator 2 having the mounting screw parts 2c fixed at both ends of a central axis of the supporting member 2a. This diaphragm 3 is sandwiched by an inner center plate 6b and an outer center plate 6a and is fixed by inserting the mounting screw parts 2c of the oscillator 2 into a through hole 6c provided at the center of the outer and inner center plates 6a, 6b. A cylindrical projecting portion 6b1 is formed at the center of the inner center plate 6b on its oscillator 2 side, and this projecting portion 6b1 is fitted into the concave groove 2d formed at the ends of the supporting member 2a of the oscillator 2 so as to be sealed in an airtight manner with a ring-shaped elastic member 7 inbetween.