RECIPROCATING PUMP

PROBLEM TO BE SOLVED: To provide a reciprocating pump having reduced size and weight, which enables an improvement in pump efficiency and a reduction in noise. SOLUTION: The pump comprises a manifold 6 having a pump chamber 17, a suction port 12 for sucking fluid from the outside to the inside of the manifold 6, a discharge port 13 for discharging fluid from the inside to the outside of the manifold 6, a suction valve 11 provided between a suction port 12 and a pump chamber 17, opening and closing a flow path 22 of fluid to the pump chamber 17, and a discharge valve 7 provided between the pump chamber 17 and discharge port 13, opening and closing a flow path 23 of fluid from the pump chamber 17. The suction port 12, the suction valve 11, the discharge valve 7 and the discharge port 13 are arranged coaxially, thereby the fluid does not receive unnecessary resistance, the fluid is made to flow smoothly, the pump efficiency can be improved, noise can be reduced, and the structure of the manifold 6 can be simplified and made compact and lightweight. COPYRIGHT: (C)2010,JPO&INPIT