Method and apparatus for controlling the differential speed between the centrifuge drum and the screw conveyor of a worm centrifuge
US4668213A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1986 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Jan 24, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B1/2016
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for controlling a worm centrifuge wherein the centrifuge drum is driven by a first hydraulic motor and the screw conveyor is driven by a second hydraulic motor and first and second valves are connected to control the flow of hydraulic fluid to the motors and the valves receive the full output of a constant delivery pump. Control of the valves is obtained by a torque measuring device measuring the torque input to the screw conveyor and the torque measuring device has a control which opens the valve to a motor for the screw conveyor with increase in torque and simultaneously closes the valve to the motor to the centrifuged drum proportionately so that the total flow of the pump is utilized by the motors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.