Screw pump description of the sewage pump

In life and industry, there is often a lot of wastewater that needs to be treated. Because of speed, quality, particulate matter, and outlet pressure, we often choose a single-screw pump. The single-screw pump has always been the strength of the sewage pumper, so what are the benefits of a single-screw pump? How is it applied in sewage?

As we all know, the flow rate of the single-screw pump has a linear relationship with the rotation speed. It is reasonable to reduce the rotation speed through a speed reducer or a stepless speed regulator to make the rotation speed reach 300 revolutions per minute or less. Compared with the high-speed screw pump structure, its life will be extended by several dozen times. Compared to low-speed screw pumps, high-speed screw pumps can increase the head and flow, but the power is significantly increased. The high speed accelerates the abrasion between the rotor and the stator, and must lead to premature failure of the screw pump, and the high-speed screw pump The stator rotor has a short length and is highly wearable, thus shortening the service life of the screw pump.

Nowadays, there are many screw pumps on the market to treat sewage. Relatively speaking, the imported single-screw pump has a reasonable design, excellent materials, high prices and inadequate service, high parts prices, and long order times are obviously not the guarantee of life and industry. Most of the domestic products follow the imported products, but the quality varies greatly. When selecting domestically produced products, when considering cost-effectiveness, low-speed, long-leads are used, the transmission components are of good quality, and the rated life is long.

In the sewage containing contaminated particles, a single screw pump pump is equipped with a crusher or a filter at the inlet to block debris from entering the screw pump and clean the grid in time. A bypass relief valve should be installed at the outlet pressure to stabilize the outlet pressure and maintain the pump's normal operation. The screw pump is a positive displacement rotary pump. When the outlet end is blocked, the pressure will gradually increase to exceed the predetermined pressure value. At this point, the motor load increases dramatically. Therefore, export pressure should be guaranteed.

In addition to the above-mentioned factors, the single-screw pump can not be broken during application. Due to the self-priming performance of the screw pump, a vacuum will be generated in the chamber and the vacuum pump will stop the operation of the screw pump. Once the material is cut off, the rubber stator will generate high temperature and burn out due to dry friction. Therefore, the crusher is intact and the Grand It is one of the necessary conditions for the normal operation of the single-screw pump.