Gear pump’s function, application scope as well as its performance

    Gear pump is a kind of volumetric internal gear pump, whose internal gear is circular arc tooth shape and external gear is short epicycloid.

    Gear pump is mainly composed of gear, shaft, pump body, safety valve, shaft end seal, gear pump is a kind of volumetric internal meshing gear pump, its internal gear is circular tooth shape, the outer gear is a new type gear pump with short epicycloid, which has designed oil drain and oil return groove, so that the gear can bear the smallest torque force in the work, so the bearing load is small and the wear is small, high pump efficiency with safety valve to protect against overload.

The function of gear pump

    1.apply to transport all kinds of oil, such as heavy oil, diesel oil, lubricating oil, equipped with copper gear can transport low-point liquid, such as gas oil, stupid, the unit also produces stainless steel pump can transport drinks and corrosive liquid. not apply to contain hard particles or fibers, the applicable viscosity is 5 × 10-5 ~ 1,5 × 103 m2/s, temperature is not high 70 °C, if you need to transport high-temperature liquid, please use high-temperature gear pump, can transport the liquid below 300 °C.

Gear pump application:

1. in the oil system can be used for transmission, booster pump;

2. in the fuel system can be used for transportation, pressure, injection fuel pump; the Hydraulic drive system can be used to provide hydraulic power of the hydraulic pump; all industrial fields, can be used as a lubricating oil pump.

Gear pump performance

    Advantages: small size, light weight, simple structure, easy to manufacture, low price, reliable work, good self-priming performance, oil pollution is not sensitive, easy to maintain.

    Disadvantages: large flow and pressure fluctuation, large noise, invariable displacement and so on.

    Compared with the external gear pump, the internal gear pump has the advantages of small volume, small flow pulsation and low noise. The tooth contact line at the point of contact has been playing a role in separating high and low pressure cavity, so in the gear pump does not need to set up a special valve.

Post time: Nov-02-2021