There is an independent motor drive, which can effecivelv block upstream pressure pulsaions and fow fucluations. t consists of twogears, pump body and front and rear covers to form two closed spaces, when the gear rotates, the volume of the space on the gealdisengagement side changes from smallto large, fomming a vacuum, sucking the liquid in, and the volume of the space on the gealmeshing side changes from large to smal, and the liquid is squeezed into the pipeline. The suction chamber and discharge chamber areseparated by the meshing lines of the two gears. The pressure at the discharge outlet of a gear pump depends entirely on the amount ofresistance at the pump outlet.

The main advantages of lubricaing gear pumps are simple structure, low price, small size, light weight, good self-priming ability, and largespeed range. insensitive to oll polution, easy to maintain and reliable to work; its main features are large fow and pressure pulsation.high noise, and non-adjustable displacement.