A method of greasing a decanter centrifuge
AssigneeAlfa Laval Corporate AB
InventorMartin OLSSON
Life of this patent
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Abstract
In a method of greasing a decanter centrifuge, each beating of the decanter centrifuge is located in a bearing housing and at least one bearing housing has a grease flow meter. The grease flow meter is connected to a control unit. The method includes generating a greasing operation when the operating time of the decanter centrifuge is equal to or exceeds a specific time interval between greasing operations. The greasing operation includes generating a start signal in the control unit, measuring an amount of grease injected into the bearing housing by using the flow meter, and generating a stop signal in the control unit when the amount of grease injected into the bearing housing is equal to or exceeds a specific amount of grease to be injected at each greasing operation.
Claims21
A method of greasing a decanter centrifuge, the decanter centrifuge comprising a rotating bowl suspended between bearings, each bearing being located in a bearing housing, at least one bearing housing having a grease flow meter, the grease flow meter being connected to a control unit, the control unit defining a specific amount of grease to be injected at each greasing operation and a specific time interval between greasing operations, the method comprising the steps of:
- operating the decanter centrifuge by rotating the bowl while measuring an operating time since the last greasing operation in the control unit;
- and
- generating a greasing operation when the operating time of the decanter centrifuge is equal to or exceeds the specific time interval between greasing operations, the greasing operation including:
- generating a start signal in the control unit;
- measuring an amount of grease injected into the bearing housing by using the flow meter;
- and
- generating a stop signal in the control unit when the amount of grease injected into the bearing housing is equal to or exceeds the specific amount of grease to be injected at each greasing operation.
(canceled)
A control unit for controlling a greasing operation of a decanter centrifuge, the decanter centrifuge comprising a rotating bowl suspended between bearings, each bearing being located in a bearing housing, at least one bearing housing having a grease flow meter, the grease flow meter being connected to the control unit, the control unit defining a specific amount of grease to be injected at each greasing operation and a specific time interval between greasing operations, the control unit being adapted for measuring an operating time of the decanter centrifuge since the last greasing operation and generating a greasing operation when the operating time of the decanter centrifuge is equal to or exceeds the specific time interval between greasing operations, the greasing operation comprising:
- generating a start signal in the control unit;
- measuring an amount of grease injected into the bearing housing by using the flow meter;
- and
- generating a stop signal in the control unit when the amount of grease injected into the bearing housing is equal to or exceeds the specific amount of grease to be injected at each greasing operation.
Dependencies are inferred from the claim text.