| 摘要 |
1,090,407. Centrifugal separators. ABRASIVE DEVELOPMENTS Ltd. Aug. 17, 1964 [Sept. 10, 1963], No. 35611/63. Heading B2P. [Also in Division B3] A mixture of a liquid and solid particles is separated into fractions by forming a vertical vortex with the mixture, withdrawing a first fraction tangentially from the external surface, and adjacent the bottom, of the vortex and withdrawing a second fraction radially inwardly from adjacent and centre, and adjacent the upper end, of the vortex. A mixture of liquid, abrasive and detritus is treated in a centrifugal separator connected to an abrading machine (see Division B3) and comprising a first swivel chamber 31 having a tangential inlet 30 and tangential outlet 38 for removal of the heavier coarser particles and a small proportion of the liquid. A tube 44 extending from a bell-shaped portion 36 of an end wall of the chamber 31 is provided with radial holes 46 through which the major portion of the liquid and the finer particles pass into the interior of the tube and then via a space 51 and tangential openings 57 into a second chamber 58 provided with a tangential outlet tube 55 for part of the liquid and the heavier and coarser fraction of the finer particles. The remainder of the liquid and the very fine particles are removed through radial holes 53 in a tube 52. A pump is connected to the inlet 30 for feeding the mixture from a tank. The outlet 38 is connected to an abrasivedirecting nozzle whereas the outlet tube 55 is connected to a pipe which delivers the mixture fraction to the bottom of the tank to agitate the contents thereof to prevent clogging of the suction pipe connected to the pump. The tube 56 is connected to a pipe, the discharge of which is controlled by a float-operated, wedgeshaped valve member which directs the discharge either to the tank or to a trough according to the liquid level in the tank. The parts of the machine and separator in contact with the abrasive may be lined with rubber. |
