In life and industry, there is often a lot of sewage that needs to be handled, and we usually choose single screw pumps because of speed, quality, foreign particles, and outlet pressure. Single-screw pump has been the strength of the sewage Parker, so what are the benefits of single-screw pump? How is it applied in sewage? As we all know, single screw pump flow and speed into a linear relationship, through the reducer or stepless speed reducer to reduce the speed, the speed of 300 rpm or less is more reasonable. , Compared with the high speed screw pump structure, its life expectancy will be extended several times. Compared with the low speed screw pump, high speed screw pump can increase the head and flow, but the power is significantly increased, high speed accelerated the wear between the rotor and the stator, the screw will inevitably premature failure, and high speed screw pump The fixed rotor length is very short, easy to wear, thus shortening the life of the screw pump. Now on the market price of more screw pump, sewage treatment, relatively speaking, imported single screw pump design, excellent materials, higher prices are not in place services, parts prices are high, long order cycle is obviously not living and industrial protection , Most domestic products follow the imported products, but the quality varies greatly. When using domestically produced products, when considering the cost performance, the products with low speed and long lead, transmission components are of good quality and the rated life is long. In the sewage containing impurities particles in the single screw pump installed grinder or installed in the import position of the filter, blocking debris into the screw pump, clean the grille in time. In the outlet pressure position to install bypass relief valve, to stabilize the outlet pressure, to maintain the normal operation of the pump. Screw pump is a positive displacement rotary pump, when the outlet is blocked, the pressure will gradually increase, so that the pressure exceeds the predetermined value. At this time the motor load increased dramatically. Therefore, export pressure should be guaranteed. In addition to the above factors, the single screw pump can not be cut off when it is used. As the self-priming screw pump performance, the cavity will produce a vacuum, the vacuum pump will stop the pump operation, once the cut-off, the rubber stator due to dry friction, instantaneous heat generated and burned, so the grinder intact, Granville smooth Is a single screw pump is one of the necessary conditions for the normal operation.
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