| 摘要 |
<p>In a mould-pressing machine (not shown) with liquid-mist injection, in which are used atomizing nozzles (of which one is shown) with a vortex chamber (27) delivering atomized liquid mixed with air through outlet apertures (28), the atomizing air nozzle or nozzles (21a) being constantly supplied with compressed air through a pressure conduit (29) while the liquid nozzle (21) solely receives liquid under pressure through a liquid channel (30) and a slave valve (31, 32, 33) controlled by the liquid pressure in the periods, during which injection of liquid mist is desired, the main new features are that a vortex chamber (24) is provided upstream of the vortex chamber (27), and that between these two vortex chambers a flow path (25, 25a, 26) is provided to interconnect the two vortex chambers (24, 27), through which flow path the liquid mist having been formed in the vortex chamber (24) is forced to pass and change its direction and velocity of flow at least once, thus reducing the droplet size of the liquid mist. With this arrangement, it is possible to form a liquid mist having smaller and more uniform droplets and to reduce the consumption and waste of liquid, at the same time as a good lubrication of the mould walls is ensured.</p> |
