GEAR PUMP

摘要

PURPOSE: A gear pump is provided to place driven gears at both sides of a driving gear in order to uniformly apply an eccentric load on the tooth of an eccentric gear to the both sides, thereby preventing the damage or fracture of the tooth. CONSTITUTION: A gear pump (100) includes a driving gear (120), a first driven gear (130a), a second driven gear (130b), a first inlet (112), a first outlet (112a), a second inlet (114), a second outlet (114a), and a connecting hose (140). The rotatable driving gear inside a casing (110) is rotated by a driving rotor (150). The mutually engaged driven gears inside the casing are collinearly placed at both sides, or the upper and the lower side of the driving gear, and are rotated by the rotation of the driving gear. A fluid respectively flows in the first inlet, and is discharged from the first outlet. The first inlet and outlet are collinearly placed between the driving gear and the first driven gear, and are formed at both sides, or the upper and the lower side of the casing. The fluid respectively flows in the second inlet, and is discharged from the second outlet. The second inlet and outlet are collinearly placed between the driving gear and the first driven gear, and are formed at both sides, or the upper and the lower side of the casing. The flow direction of the fluid in the first inlet and outlet is reverse to the flow direction of the fluid in the second inlet and outlet. The connecting hose is connected to the first outlet and the second inlet, and guides the fluid from the first outlet to the second inlet.