The working principle of a gear pump relies on the change and movement of the working volume formed between the pump cylinder and the meshing gear to transport liquid or increase its pressure. Specifically, a gear pump consists of two gears, a pump body, and front and rear covers, forming two enclosed spaces. When the gears rotate, the volume of the space on the disengagement side of the gears increases from small to large, creating a vacuum that sucks in the liquid. The volume of the space on the meshing side of the gears decreases from large to small, squeezing the liquid into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of two gears. one
During the working process, a series of sealed working cavities are formed between each tooth groove and the inner wall of the shell, which are not connected to each other. As the gear rotates, the liquid is sucked in from the suction port and discharged when the two teeth mesh. In this process, the driving wheel drives the driven wheel to rotate, and the liquid is conveyed through the volume change of the meshing space of the gear teeth, forming low-pressure and high-pressure areas, thus achieving the effect of the pump. two
In addition, gear pumps have a simple, compact structure, small size, light weight, are insensitive to oil pollution, and are inexpensive, easy to maintain, and reliable in operation. Therefore, they are widely used in various hydraulic systems and engineering projects
