| 摘要 |
The present invention relates to a pump using an eccentric rotary piston. The pump includes: a spur gear rotated by an external driving force; a spur gear opposite to the spur gear; a transmission gear transmitting the driving force from the spur gear to the other spur gear with the pair of spur gears meshed with each other to rotate in a different direction; a shaft connected to the opposite spur gears and rotating in the same direction as the rotation direction of the spur gear; and pistons connected to the shaft and eccentrically rotated by operation of the meshed spur gears. A key connecting each piston is slid along a key groove so that the piston rotates about an axis of a cylinder chamber. When the piston rotates about the axis of the cylinder chamber, no gap is formed, and the piston is eccentrically operated without forming a clearance more than the necessary amount. Also, the noise and vibration are minimized at the operation of the pump, and the suction force and the discharge force of the fluid are increased. |
