| 摘要 |
Means are disclosed for mounting the upper (140) and lower (116) bowl members on a common linear cylindrical member and for separately controlling gas pressure within the centrifuge housing (18) in a low speed decanting centrifuge (10) for separating relatively large particulate material (e.g. yeast) from a feedstock. The centrifuge may be clamped to a container (12) and a pressure differential is created between the centrifuge housing (28) and the container (12) to, in turn, force feedstock upwardly into the lower bowl (116) of the centrifuge. A stack of frustoconical discs (278, 280, 282) carry supernatant downwardly and inwardly for vertical transfer to a discharge chamber (76). Particulate matter is centrifugally discharged continuously between engageable surfaces (146, 148) of the lower bowl member (116) and the upper bowl member (140). The invention provides for means isolating hydraulic forces generated within the bowl from thrust bearing means (110) supporting the bowl and for transferring drive forces to the intake means. The invention provides further for optional means (550) separately collecting and controlling discharge from the centrifuge housing whereby gas pressure within the housing may be increased further to partially counterbalance hydrostatic forces within the bowls thus permitting bowl members of low material strength to be used in relatively high speed separation as a means of improving processing capacity. |
