초록 ▼

To provide performance particularly in handling supercritical extraction systems, a specially designed pump includes a cam-driven, single-plunger with a cam having a profile that enables the pumping system to avoid destructive reverse torque on the cam, gear train and drive motor after the cam passe

To provide performance particularly in handling supercritical extraction systems, a specially designed pump includes a cam-driven, single-plunger with a cam having a profile that enables the pumping system to avoid destructive reverse torque on the cam, gear train and drive motor after the cam passes top dead center. The fluid volume leaving the pump is determined by measuring only pressure or other parameters related to flow and movement of the plunger. Measurement of the fluid volume leaving the pump is useful for recording or indicating the flow rate while the pump is operating.

대표청구항 ▼

[ What is claimed is:] [10.] A method for supercritical fluid extraction comprising the steps of:pumping supercritical fluid into means for supercritical fluid analysis;measuring the pumped supercritical fluid by determining the pressure exerted by the fluid being pumped by a piston and movement of

[ What is claimed is:] [10.] A method for supercritical fluid extraction comprising the steps of:pumping supercritical fluid into means for supercritical fluid analysis;measuring the pumped supercritical fluid by determining the pressure exerted by the fluid being pumped by a piston and movement of the piston and calculating fluid rate flow from the piston movement and the pressure exerted by the fluid being pumped.