| 摘要 |
The invention relates to a diaphragm pump for dispensing or metering purposes, for example for use in liquid soap dispensers. The pressure chamber (7) of the pump is defined by a fixed wall (6) and the diaphragm (1). A check-valve on the inlet side towards a storage vessel (11) forms a cylindrical flange (4) movable in a groove (5) and sealing against the outer surface thereof. Arranged in a spout (2) passing through the diaphragm is an oblique wall (3), which is slotted through a short distance around its periphery, thereby to form a seal against the suction of air into the pressure chamber (7). The diaphragm (1) is arranged to be compressed by a pressure body (9) provided on a lever (8). |
