Date: 2024-10-22 Author: hrzl
Screw pumps are widely used and play an important role in sewage treatment. They can transport wet sludge and flocculant materials. The selection of screw pumps should be economical, reasonable, safe and reliable. The most important thing is to meet the requirements of use.
In the selection of screw pumps in sewage treatment, quality is very important. Considering the cost-effectiveness, equipment with low speed, long lead, excellent transmission component materials and long rated life should be selected. The speed of the screw pump has a great influence on the operating efficiency and life. The flow rate of the screw pump is linearly related to the speed. Compared with the low-speed screw pump, the high-speed screw pump can increase the flow rate and head, but the power is significantly increased. The high speed accelerates the wear between the rotor and the stator, which will inevitably cause the screw pump to fail prematurely. The rotor of the high-speed screw pump is very short and easy to wear, thereby shortening the service life of the screw pump. The speed is reduced by the speed reduction mechanism to keep the speed within a reasonable range below 300 revolutions per minute. Compared with the high-speed screw pump, its service life can be extended several times.
During the operation of the screw pump, it is necessary to pay attention to not letting debris enter the pump body to avoid damaging the screw pump stator. In order to prevent debris from entering, you can install a grille device or filter to block debris from entering the screw pump, but the grille should be cleaned in time to avoid clogging.
It is best to install a material cut-off shutdown device in the screw pump. Once the material is cut off, it will stop to avoid running in the case of material cut-off, causing wear and high temperature to burn the equipment. In addition, the outlet pressure should be kept constant during operation to avoid overloading and damage to the equipment.
