| 摘要 |
1. An admixing device for producing a mixture of water and foaming agent, comprising an admixer (7) having a mixing chamber, into which a pressure water line (4) and a foaming agent line (8) open, wherein the supply of foaming agent is controllable by means of a control member, which is non-rotatably connected to a hinged control valve (23), which controls the inlet cross-section for the water supply and is spring-biased in the closing sense opposite to the direction of flow, characterized in that a pressure source (10), which is independent of the supply of water is provided for the supply of foaming agent and the control member consists of a control cam (24), which is associated with the outlet opening of the foaming agent line (8) and in response to a pivotal opening movement of the hinged control valve (23) rotates in a sense to open the foaming agent line (8) and in dependence on the shape of the cam adjusts for the foaming agent an inlet gap (29) which depends on the angular position of the hinged control vale. |
