Importance

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Abstract

A pump device includes a pump head and a device main body part. The pump head includes: a valve module having a guide holding suction and discharge valves and having a side flow path allowing communicating with an outer lateral surface; a first block including a first accommodation chamber accommodating a valve module lower part, a suction port, a suction-side flow path connecting the suction port and valve, a pump chamber, and a pump chamber communication flow path connecting the pump chamber to the side flow path; a second block including a second accommodation chamber accommodating a valve module upper part, a discharge port, and a discharge-side flow path connecting the discharge port to a discharge valve upper part; and a coupling device for coupling the blocks. The device main body part includes a diaphragm in the first block pump chamber and an actuator driving the diaphragm to reciprocate.

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First Claim