Double pump
AssigneeDanhydra A/S
InventorThomas Hove
Life of this patent
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Abstract
Inlets (3, 4) are provided for fluid at suction sides of first and second positive displacement rotary pumps (1, 2) and likewise outlets (5, 6) are provided for fluid on discharge sides, wherein viscous fluid pumped from a reservoir enters the inlet (3) of the first pump (1) and is discharged from the outlet (5), wherein an intermediate part or connection (7) is provided with an inlet (8), a first outlet (9) and a flow path (10) for fluid, wherein the outlet (5) of the first pump is connected to the inlet (8) of the intermediate part and the outlet (9) of the intermediate part is connected to the inlet (4) of the second pump, such that during the pumping the viscous fluid is forced through the first pump (1), through the intermediate part (7) and through the second pump (2) to the outlet (6) of the second pump.
Claims17
A grease pump comprising two positive displacement rotary pumps, a first pump (1) and a second pump (2), wherein each pump comprises an inlet (3, 4) for grease at a suction side and an outlet (5, 6) for grease on a discharge side, wherein the inlet (3) of the first pump (1) is connectable to a reservoir of the grease by a connection (14) pipe or hose and the outlet (6) on the discharge side of the second pump is connectable to a lubrication system (26), wherein the inlet (3) of the first pump (1) faces upwards during the pumping of the grease,
- wherein the grease pump further comprises
- an intermediate part or connection (7) comprising an inlet (8), a first outlet (9) and a flow path (10) for the grease, wherein
- the outlet (5) on the discharge side of the first pump is connected to the inlet (8) of the intermediate part and the first outlet (9) of the intermediate part is connected to the inlet (4) on the suction side of the second pump, such that during the pumping the grease is forced from the reservoir through the first pump (1), through the intermediate part (7) and through the second pump (2) to the outlet (6) on the discharge side of the second pump.
Dependencies are inferred from the claim text.