FIELD: physics.
SUBSTANCE: invention relates to systems for delivery of thick material of high viscosity, such as mastic. High-viscosity fluid medium delivery system comprises variable-speed pump. Circuit through which the fluid medium is pumped contains a loop having a plurality of fluid outlets from the circuit. Controller controls operation and speed of the pump so that the pump pumps the fluid in the circuit in high pressure mode, in which the fluid flows from the pump to the fluid outlets through both ends of the loop. During high-pressure mode, the controller controls the pump speed to maintain the fluid pressure in the circuit. Controller also controls the operation and speed of the pump so that the pump pumps the fluid along the circuit in low pressure mode during periods when none of the fluid outlets are in use.
EFFECT: improved delivery of high-pressure fluid medium.
18 cl, 5 dwg
