Method of and apparatus for controlling the flow rate of viscous

Details Method of and apparatus for controlling the flow rate of viscous Method of and apparatus for controlling the flow rate of viscous

1987-11-23

1989-07-18

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Processes

Of discharge modification of flow varying

239 69, 239 71, 137 8, A01G 2700, B05B 1704

Patent

active

048486574

ABSTRACT:
A method and an apparatus for controlling a flow rate of viscous fluid for feeding the fluid under pressure from a pump through a hose to a spray gun with a control unit. A temperature and a pressure of the viscous fluid in the hose is detected. Based on the detected temperature and a temperature-supplying pressure characteristic data stored in the unit, viscous fluid supplying pressure for obtaining a desired set flow rate is calculated. Based on the detected pressure of the fluid and the calculated supplying pressure, a signal for obtaining a desired supplying pressure is obtained and outputted. The gun is switched on to operate the pump at a constant speed to provide the desired set flow rate. Alternatively, only the pressure is detected and a pressure which is obtained in a previous operation and stored in the unit is used.

REFERENCES:
patent: 3530958 (1970-09-01), Brannon et al.
patent: 3787882 (1974-01-01), Fillmore et al.
patent: 3977603 (1976-08-01), Magee, Jr.
patent: 4585169 (1986-04-01), Kinsey
patent: 4595342 (1986-06-01), Christlieb et al.
patent: 4614300 (1986-09-01), Falcoff
patent: 4720801 (1988-01-01), Boll

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