| 摘要 |
A diaphragm pump including an eccentric circular cam or crank shaft, a connecting rod rotatably connected at one end to the eccentric circular cam or crank shaft, a pair of diaphragms each having one surface serving as pressure receiving surface, center disks mounting the central portions of the pair of diaphragms on the opposite sides thereof, a first housing cooperating with one of the diaphragms and the center disks to define a first discharge chamber, a second housing cooperating with the other of the diaphragms and the center disks to define a second discharge chamber, a third housing cooperating with the pair of diaphragms and the center disks to define a suction chamber, a connecting member connecting the other end of the connecting rod to the center disks in the radial center and in the middle of the thickness thereof in order to minimize any swinging movement of the center disks which would otherwise be caused by reciprocatory swinging movement of the connecting rod, and guide means for guiding the center disks for preventing any swinging movement thereof.
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