초록 ▼

A diaphragm pump having at least two working chambers communicating with inlet and outlet chambers via non-return valves, includes a reciprocal wobble plate affixed to a diaphragm in the working chambers. The wobble plate has a central guide shaft with a carrier at its free end, the carrier having r

A diaphragm pump having at least two working chambers communicating with inlet and outlet chambers via non-return valves, includes a reciprocal wobble plate affixed to a diaphragm in the working chambers. The wobble plate has a central guide shaft with a carrier at its free end, the carrier having resilient material, such as a rubber coating or rubber blocks, associated with it. A groove in a rotor connected to a drive shaft receives the carrier. The slope of the guide shaft with respect to the drive shaft is adjustable, and the resilient material holds the carrier in a preset eccentric position with respect to the drive shaft so that under overload conditions the carrier will press against the resilient material and reduce the eccentricity of the carrier with respect to the drive shaft. Once the overload conditions no longer exist, the guide shaft returns to its normal position and normal pumping continues.

대표청구항 ▼

A diaphragm pump comprising: a drive shaft having a rotor; a least two working chambers provided with a diaphragm; an inlet chamber and an outlet chamber, each communicating with said working chambers via a non-return valve for each chamber; means for imparting to a reciprocal movement to the diaphr

A diaphragm pump comprising: a drive shaft having a rotor; a least two working chambers provided with a diaphragm; an inlet chamber and an outlet chamber, each communicating with said working chambers via a non-return valve for each chamber; means for imparting to a reciprocal movement to the diaphragm, said means comprising a wobble plate which is fixed to and supported by said diaphragm, said wobble plate having a central guide shaft which is adjustable to different sloping positions with respect to said drive shaft, and wherein said guide shaft has a free end; means for effecting rotation of said guide shaft in response to rotation of said drive shaft rotor, comprising: a carrier rotatably journalled on said guide shaft free end, said carrier being axially displaceable but unrotatably connected with said drive shaft rotor; and resilient means for holding said carrier in a preset eccentric position with respect to said drive shaft so that under overload conditions said carrier will press directly against said resilient means and reduce the eccentricity of said carrier with respect to said drive shaft; and wherein said resilient means comprises a pair of rubber blocks disposed in association with opposite ends of said carrier.