| 摘要 |
A method of pneumatically transferring particulate material from a bulk comprises disposing a tubular device (2) in the bulk (3), the tubular device (2) having a longitudinal opening (7) for the ingress of the particulate material, an air and particulate material outlet (4b) at or towards one end and an air inlet (4a) at or towards its other end, applying suction to the outlet (4b) to draw air from the inlet (4a) and so entrain particulate material from the bulk (3) and simultaneously applying fluid pressure from a pressurised source to the inlet (4a). The method has been found to have particularly advantageous application in sand box and ejector equipment for railway locomotives in which the tubular device (2) is disposed in the sand box (1) for transferring sand from the sand box (1) to the ejector. |
