Constant-rate fluid delivery equipment - has two mechanically coupled pumps handling variable and constant viscosity fluids (br 30.10. 79)

摘要

The equipment delivers a fluid with variable viscosity, e.g. paint, at constant rate to a spray pistol. The supply source is connected by a circuit to the pistol. Two positive displacement pumps are mechanically coupled together so that their outputs are in a fixed proportion. One pump is connected to the paint circuit and the other is connected to a circuit handling a fluid of constant viscosity. The latter incorporates, downstream of the pump, devices regulating the rate of flow of the fluid.