Screw pump:

1, the screw pump has better suction capacity, so it works better in longer pipelines, higher viscosity oil, and the presence of air in the fluid.

2, the diameter of the screw element in the pump is smaller than that of the gear (for the same capacity), which produces less turbulence in the fluid, thus making the pump smoother.

3, screw pump can work at a higher motor speed (3000-3500 RPM).

4, screw pump design has better mechanical efficiency, because compared with gear pump, it uses less power at the same capacity, thus saving energy costs.

5, the operation of the screw pump is softer, less pulsation, less noise, less vibration, which means longer service life.

6, the screw pump usually occupies a smaller area, so it will be better when there are problems in space.

7, screws and other internal components generally need to be replaced at the same time to ensure efficient operation, maintenance costs are quite high.

Gear pump:

1, the pumping capacity of the gear pump is usually less than the equivalent screw pump, so the efficiency is lower in the case of difficult pumping.

2, the gear needs a larger diameter to meet the required capacity, so there will be more pulsation in the fluid discharge.

3, due to the large gear, the speed is limited. If RPM is increased, the pump will lose suction.

4, the motor in the gear pump uses higher power with the same capacity as the screw pump, resulting in increased energy costs and the need for a larger motor.

5, gear pump noise is louder, more turbulent, and will cause the pump and pipeline system to withstand more vibration, thereby reducing the working life.

6, because they usually have a large footprint, they are not suitable for installations with limited space.

7, the internal components are usually cheaper than the components in the screw pump, but because the bushings and bearings are in the liquid being pumped, they are more prone to wear.

The above content is the characteristics of screw pump and gear pump, I hope to help you choose the best. Shenzhen Oudejie technology professional sales of original imported knoll screw pump, and committed to sales of screw pump products are new original imports, while providing our customers with quotation, selection, product information and other services.