Compressing diaphragm pump with multiple effects

A compressing diaphragm pump with multiple effects, said compressing diaphragm pump including a motor, a pump head body fixed to a motor housing, a roundel mount situated on a lower side of the pump head body and a plurality of eccentric roundels each having a top face and a fastening bore formed in the top face for receiving a fastening member, the eccentric roundels being mounted on the roundel mount to extend through operating holes in the pump head body, a diaphragm membrane fixed to the eccentric roundels, through which the fastening members extend and which is situated on an upper side of the pump head body, and a plurality of pumping pistons secured to respective said eccentric roundels by said fastening members extending through said diaphragm and arranged to be moved in a pumping action upon movement of the diaphragm membrane, wherein:

• the roundel mount is situated on a wobble plate such that rotation of the wobble plate by the motor causes the roundel mount to wobble, resulting in sequential up and down movement of the eccentric roundels, the sequential up and down movement of the eccentric roundels causing sequential, reciprocating movement of the pumping pistons,
• the pump head body includes at least one first vibration-reducing positioning structure respectively extending at least partially around each operating hole on the upper side of the pump head body,
• the diaphragm membrane includes at least one second vibration-reducing positioning structure at a respective position on the diaphragm membrane that corresponds to a position of said at least one first vibration-reducing positioning structure on the pump head body,
• the at least one first vibration-reducing positioning structure mates with the corresponding at least one second vibration-reducing positioning structure to reduce a moment arm generated by an acting force during pumping by movement of the diaphragm membrane, thereby generating less torque during said movement to decrease a strength of vibrations and vibration noise,
• the diaphragm membrane further includes a plurality of annular flanges arranged to mate with a respective annular positioning groove extending around and defining a horizontal top face of each of said eccentric roundels, and
• a section of the top surface of each said eccentric roundel is inclined relative to the horizontal top face to form a sloped top ring that extends from a respective said annular positioning groove to a vertical or inverted frustoconical flank of the respective eccentric roundel to increase a linearity of a distribution of components of a rebounding force of the diaphragm membrane that occurs in response to application of the acting force during operation of the diaphragm pump.