| 摘要 |
The invention relates to pumping plants of processing equipment and can be used for the accurately metered supply of two and more components of a working body (medium, fluid, fluid mixtures etc) to an actuator at a high and low pressure. The inventive pumping system for supplying a two-component working body of a polyurethane expended material, consisting of delivery and drain pipes which are provided with controlling equipment, a working body source and an actuator, comprises two metering units each of which is embodied in the form of two hemispheres interconnected by means of flange butt joints and an elastic flexible impermeable membrane which is clamped therebetween along a circle, wherein one hemisphere is provided with an input-drain hole which is embodied therein and through which said hemisphere is connected to the working agent source by means of the delivery pipe channels via a working agent flow divider and an electromagnetic valve and to the working agent source by means of the drain pipe channels through an electromagnetic valve. The other hemisphere is provided with an input hole through which said hemisphere is connected to one of two sources of the working body components by means of the delivery pipe via a cutout valve and a drain hole through which the hemisphere is connected to the actuator by means of the drain pipe channels via a cutout valve. |
