EP 0159422 B1 19880511 - SCREW DECANTER TYPE CENTRIFUGAL CONCENTRATING MACHINE
Title (en)
SCREW DECANTER TYPE CENTRIFUGAL CONCENTRATING MACHINE
Publication
Application
Priority
EP 84302070 A 19840327
Abstract (en)
[origin: EP0159422A1] An improved screw decanter type centrifugal concentrating machine of the type including a horizontally extending bowl (1) and a screw conveyor (8) rotatably supported within the bowl (1) in the coaxial relation is disclosed. The screw conveyor (8) is rotated at a different rotational speed from that of the bowl (1) and an arrangement is made such that liquid initially supplied prior to separating, concentrated liquid and residual liquid after completion of separation are continuously supplied and discharge through the hollow space in the hollow shafts (12) (13) of the bowl (1) and the screw conveyor (8). To properly adjust discharge rate of concentrated liquid and residual liquid from the machine or concentration of solid material in both liquids, throttle valves are disposed at the position located midway of discharge passages extending from the hollow shafts (13) (28). The throttle valves (23) (26) are preferably designed in the form of an automatically controlled valve. Suspension to be treated is introduced into the bowl (1) by way of guide vanes (17) on the side wall of the bowl. After completion of separation concentrated liquid is discharged through the tubular space in the hollow shaft (28) by way of scooping tubes (18) or grooves and residual liquid is discharged through the cylindrical space (30) in the hollow shaft (13) by way of passages (20) in a guide plate (19) at the side end part of the screw conveyor (8).
IPC 1-7
IPC 8 full level
B04B 1/20 (2006.01)
CPC (source: EP)
B04B 1/20 (2013.01); B04B 2001/2083 (2013.01)
Citation (examination)
- EP 0085953 A2 19830817 - HITACHI LTD [JP]
- DE 48615 C
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0159422 A1 19851030; EP 0159422 B1 19880511; AT E34094 T1 19880515; DE 3471015 D1 19880616; ES 531248 A0 19850301; ES 8503529 A1 19850301
DOCDB simple family (application)
EP 84302070 A 19840327; AT 84302070 T 19840327; DE 3471015 T 19840327; ES 531248 A 19840403