| 摘要 |
<p>A diaphragm foam pump including a diaphragm (12) made of a flexible material defining a mixing chamber (14) and having an inlet opening and an outlet opening. An inlet passageway is in fluid communication with a reservoir (26) containing a foamable liquid (S) and the inlet opening (22), with the inlet passageway (24) having a one-way valve (28) therein. The pump also includes an outlet passageway (36) in fluid communication with the outlet opening (38) and having a one-way valve (42) therein, and an air inlet (30) in the inlet passageway (24) having a one-way valve (32). The diaphragm foam pump further includes an electric motor (16) and a motor-driven element associated with said electric motor. Actuating the electric motor drives the motor driven element (18,20) to repeatedly collapse and expand the diaphragm (12), and where expansion of the diaphragm (12) creates a vacuum causing foamable liquid and air to flow into the mixing chamber (14), and collapsing of the diaphragm (12) causes the liquid and air mixture to be forced out through the outlet passageway (36) as foam.</p> |
