Patent ID: 6095781
Filing Date: 2000-08-01
Classification: F01C,F04C,Y10T

Abstract:
A high pressure rotary lobe pump comprising:a driver shaft that passes through and is connected to a first timing gear, the driver shaft further passing through and being connected to a first lobe gear, the first lobe gear being disposed inside a casing,a driven shaft that passes through and is connected to a second timing gear, the driven shaft further passing through and being connected to a second lobe gear, the second lobe gear being disposed inside the casing,the casing further comprising an open distal end that is connected to a head plate and a proximal end that is connected to an inlet port and an outlet port, the inlet port being disposed diametrically opposite the casing from the outlet port, the driver shaft and driven shaft each comprising a distal end that engages the head plate, the head plate comprising two receiving apertures for receiving the distal ends of the driver and driven shafts, the head plate further being disposed adjacent to the first and second lobe gears, the lobe gears being disposed between the head plate and the inlet and outlet ports, the head plate comprising a pair of opposing recesses disposed on opposing sides of the distal ends of the driver and driven shafts, the recesses providing clearance between distal ends of the lobe gears and the head plate at the recesses, the recesses for improving loading and unloading of the first and second lobe gears.