Imperforate bowl: centrifugal separators – With condition responsive means – For controlling drive of driven means within bowl
Patent
1981-02-13
1983-01-25
Hornsby, Harvey C.
Imperforate bowl: centrifugal separators
With condition responsive means
For controlling drive of driven means within bowl
494 9, 494 37, 494 53, B04B 902
Patent
active
043699154
ABSTRACT:
A method and apparatus for regulating the differential rpm of two rotating parts, such as the external drum and internal worm conveyor of a worm centrifuge, undertakes an electronic measurement and sampling of the rotational during the course of operation of a particular device under speeds of each part and supplies this information to a microprocessor which calculates the respective rotational speeds of the parts and relays a signal to the drive device for one of the parts in order to maintain a preselected rpm differential between the rotational speeds of the two parts. Different characteristic curves are stored in the microprocessor for optimum rpm differential during the course of operation of a particular device under different conditions, such as for different sludge consistencies in the case of use with a centrifuge. If deviation of the actual rotational speed of one of the parts from the optimum value is detected, the microprocessor operates to return operation to the optimum values.
REFERENCES:
patent: 3206665 (1965-10-01), Burlingham
patent: 3734399 (1973-05-01), Oas
patent: 3780365 (1973-12-01), Porter et al.
patent: 4085888 (1978-04-01), Jager
patent: 4240578 (1980-12-01), Jackson
patent: 4299353 (1981-11-01), Bruning et al.
Gruenberg Wolf-Diethard
Oberg Hans-Joachim
Posse Guenther
Hornsby Harvey C.
Klockner-Humboldt-Deutz AG
Peterson Christine A.
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