| 摘要 |
PURPOSE:To simplify a single action tandem type diaphragm pump, in which a main agent and a curing agent can be alternately force-fed by one stroke, to facilitate regulation of displacement, to improve a precision of a mixture ratio, and to facilitate maintenance. CONSTITUTION:The first pump unit 100 and the second pump unit 200, both of which are provided with completely same constitution, are stored in a casing body 301 and lid members 310, 320, and a collar for regulating an effective area of a diaphragm can be arranged along the inner circumferential edge in a diaphragm holding part of the members 301, 310, 320. A collar 280 is arranged in the second pump unit 200 used for force-feeding of a curing agent, and the effective area S2 for the diaphragm 211 is set to be smaller than the effective area S1 for the diaphragm 111 in the first pump unit 100, so that the proper amount, which is less than a paint pumping amount in the first pump unit, of pumping of the curing agent is carried out, and consequently, the mixture ratio of the curing agent to the main agent is properly determined. |
