Screw pump operation work, should pay attention to check the pressure, temperature and mechanical shaft seal. The shaft seal should be allowed to have traces of leakage, such as leakage of no more than 20-30 seconds/drops, is considered normal. If the pump noise at work, this is often because of the oil temperature is too low, the oil viscosity is too high, the oil into the air, or pump in the coupling loss caused excessive wear. Screw pump screw length is larger because of the job, poor rigidity, easy to cause bending, cause work properly. The connection of shafting must be very good for; The best part of the work is to carry out the positioning, so as to avoid the distortion of the pipeline. When connecting the pipe, it should be fixed independently to minimize the involvement of the pump.

In addition, it is better to use a suspended screw to avoid the distortion caused by uneven placement. In the third century b.c., the spiral rod invented by Archimedes was able to continuously lift water up to a few meters, and its principle was still used by the modern screw pump.

Screw pump have dry absorption ability, but have to turn, prevent dry to avoid surface scratch work. Must be established in the direction of running, to produce certain suction row. Screw pump should be in suction stop valve fully open under the condition of starting, in case of overload or empty. If the pump need to be in the oil temperature is low or high viscosity under the condition of starting, suction exhaust valve and bypass valve should be fully open under the condition of starting, let the minimum load when the pump starts, until the prime mover to the rated speed, and then bypass valve gradually closed. When the bypass valve opens, the liquid is in the case of a throttle cycle flow in the pump, and the cycle of oil, the more the longer cycle, liquid heating is more serious, even make pump due to the high temperature deformation and damage, must pay attention.