Control system and method for an air-operated pump
AssigneeIngersoll-Rand Company
InventorsAndrew Farnham, Gordon Schroeder
Life of this patent
Estimating the term…
Abstract
A control system for the control of an air-controlled pump for pumping slurry to a filter press includes a transducer producing an output signal indicative of the actual rate of the pump. A controller includes an adjustable setpoint mechanism for setting a desired pump rate, and receives the output signal from the transducer and compares the actual pump rate to a set desired pump rate to produce a control signal. An air pressure regulator outputs a controlled air supply to the air supply port of the pump in response to the control signal.
Claims19
A control system for controlling an air-controlled pump for pumping slurry to a filter press, wherein the pump includes a port for receiving an air supply and the rate of the pump is dependent on an air pressure at the air supply port, the system comprising:
- a transducer producing an output signal indicative of the actual rate of the pump;
- a controller including an adjustable setpoint mechanism for setting a desired pump rate, the controller receiving the output signal from the transducer and comparing the actual pump rate to a set desired pump rate and producing a control signal, and including an air pressure regulator for outputting a controlled air supply to the air supply port of the pump in response to the control signal.
A control method for the control of an air-controlled pump pumping slurry to a filter press, wherein the pump includes an inlet for receiving an air supply, the method comprising:
- pumping slurry to the filter press with the pump,
- setting a desired pump rate with an adjustable rate mechanism,
- sensing an actual rate of the pump,
- comparing the actual pump rate to the set desired pump rate and producing a control signal, and
- outputting a controlled air supply to the air supply inlet of the pump in response to the control signal to maintain the rate of the pump substantially constant.
Dependencies are inferred from the claim text.