| 摘要 |
The metering pistol is based on a manually actuated positive-displacement pump having a cylindrical housing (1), a product space (2) and a thrust rod (3) with the handle (5). By pulling on the handle (5), the amount of liquid located in the product space (2) is displaced and emerges forwards through the central bore (19) in the thrust rod (3). The product space (2) is sealed with respect to the housing (1) by means of a funnel-shaped rubber diaphragm (10) which can resist medicines and solvents. Non-return valves (22, 20) are arranged at the input and output of the product space. The seal of the product space (2) ensures, by means of the funnel-shaped diaphragm (10), that the metering pump is absolutely tight so that no liquid can emerge outwards. In addition, a long lifetime is ensured by means of this design. <IMAGE> |
