PURPOSE: To prevent wear and allow long-time operation by forming a suction valve cylinder and a discharge valve cylinder from a metal material having mechanical strength.
CONSTITUTION: An electromagnetic pump has a suction valve cylinder 18 fixed to a suction valve seat 25 to internally install the residual member of a suction valve mechanism 30, and the suction valve seat 25 is fixed to a suction joint 1 and integrated thereto. Further, a discharge valve mechanism 31 is formed of a discharge valve seat 29 integrally formed with a piston 9, a discharge valve body 14 brought into contact with the discharge valve seat 29, and a discharge valve spring receiver 22, a discharge valve spring 24 between the discharge valve body 14 and the spring valve spring receiver 22, and a discharge valve cylinder 19 fixed to the piston 9 to internally install the residual member of the discharge valve mechanism 31. The suction valve cylinder 18 and the discharge valve cylinder 19 are formed from a metal material having mechanical strength. Thus, they can be prevented from being worn, and withstand long-time operation.
CHIBA YASUTSUNE
TOGO AKIHIKO
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