| 摘要 |
PURPOSE: To provide a bellows pump that facilitates a small overall design of the pump, enables low-cost manufacture of the pump and increases self-priming performance by reducing dead space in pump chambers, in a double reciprocating bellows pump. CONSTITUTION: In a cross section of bellows 7, with the center P thereof in the vertical middle, valve cases 18a and 16a of a discharge side valve unit 18 and a suction side valve unit 16 are arranged in vertical relation as projected into an associated pump chamber, and a pair of interlocking shafts 30 and 31 are arranged in a left and a right position off the center P to sides of the center P. Dead space in the pump chamber is reduced, and a vertical and a horizontal dimension of the pump are shortened to facilitate a small design of the pump.
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