Gear pump with four gears

• Main Authors: SONG XIUFU, CHENG XIANGXIN, MA QIANG
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2011
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

The utility model relates to the technical field of gear pumps, in particular to a gear pump with four gears, which comprises a pump body and a pump cover which are provided with an oil inlet way and an oil outlet way. The gear pump with four gears is characterized in that a driving gear is arranged at the center of the pump body, three driven gears are evenly distributed on the outer side of the driving gear; the driving gear and the driven gears are connected with the pump cover by the aid of gear shafts and bearings; the three driven gears spaced for 120 degrees while the driving gear is positioned at the center; and the three driven gears are positioned on the periphery of the driving gear. The gear pump with four gears is provided with three pairs of suction and exhaust openings, flow is increased correspondingly, the four gears are constantly kept in a meshed area and the set gap formed between a pump wheel and a pump casing during synchronous rotating and meshing, and the gear pump has the advantages o