| 摘要 |
<p>Automatic Dispensing Systems for Liquids A liquid dispensing system for example for paints comprises a liquid reservoir, a circulating path for the liquid to and from the reservoir, a pump for causing a pressurised flow around the path, a three-way valve in the path which is controllable to divert liquid from the path via a second valve to a dispensing nozzle. The second valve is biased to a closed position and is openable by the hydraulic pressure of the diverted liquid to permit the diverted liquid to flow to the nozzle. In a multiple liquid dispensing system, e.g. a paint blending system, each liquid has its own dispensing system as described above and the plurality of second valves thus provided are disposed in a conical formation with the nozzles directed towards the apex of the cone.</p> |
