The Safe Use Method Of Screw Pump



, screw pump stop



When the screw pump is stopped, the discharge stop valve should be closed first, and the suction stop valve should be closed after the pump is completely stopped.To get more news about screw pump, you can visit hw-screwpump.com official website.

Screw pump because of the large working screw length, rigidity is poor, easy to cause bending, resulting in work disorder. The connection of the shafting must be well aligned; In the work is best to be carried out after installation and positioning, so as to avoid deformation caused by pipeline involvement; Connect the pipeline should be fixed independently, as far as possible to reduce the pump. In addition, the spare screw in the preservation of the best suspension fixed method, to avoid the deformation caused by uneven placement.

2, the start of screw pump

Screw pump should be in the suction stop valve fully open in case of overload or suction.

Screw pump although has dry suction ability, but must prevent dry turn, so as not to scratch the working surface.
If the pump needs to start in the oil temperature is very low or viscosity is very high, the screw pump should be in the suction valve and bypass valve fully open in the case of start, let the pump start the lowest load, until the prime moder reaches the rated speed, then the bypass valve gradually closed.
When the bypass valve is started, the liquid is constantly circulating in the pump under the condition of throttling, and the more circulating oil, the longer the circulation time, the more serious the heat of the liquid, and even the pump due to high temperature deformation and damage, must be paid attention to.
3, screw pump operation

The screw pump must be operated in a given direction to produce a certain suction.

Pump work, should pay attention to check the pressure, temperature and mechanical shaft seal work. The shaft seal should be allowed to have a trace of leakage, such as the leakage amount does not exceed 20~30s/ drop, it is considered normal. If the screw pump in the work of noise, this is often due to the oil temperature is too low, the oil viscosity is too high, the oil into the air, coupling loss or excessive wear and other causes of the pump.