A gear pump is a rotary pump that transports liquid or pressurizes it by relying on the variation and movement of the working volume formed between the pump cylinder and the meshing gears. Two enclosed spaces are composed of two gears, the pump body, and the front and rear covers. When the gears rotate, the volume of the space on the disengaged side of the gears increases from small to large, forming 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 discharge chamber are separated by the meshing line of two gears. The pressure at the outlet of the gear pump completely depends on the resistance at the pump outlet. The gear adopts a new technology of the international advanced level in the 1990s - double arc sine curve tooth profile arc. Compared with involute gears, its most prominent advantage is that there is no relative sliding of the tooth profile surface during gear meshing, so the tooth surface has no wear, balanced operation, and no trapped liquid phenomenon, low noise, long service life, and high efficiency. This pump breaks free from the constraints of traditional design, allowing gear pumps to enter a new field in design, production, and use.
The pump is equipped with a differential pressure safety valve as overload protection, and the total return pressure of the safety valve is 1.5 times the rated discharge pressure of the pump. It can also be adjusted separately according to actual needs within the allowable discharge pressure range. However, this safety valve cannot be used as a pressure reducing valve for long-term operation, and the pressure reducing valve can be installed separately when needed.
The pump shaft end seal is designed in two forms, one is a mechanical seal and the other is a packing seal, which can be determined based on specific usage and user requirements.
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