First, the three screw pump speed selection Three screw flow and speed into a linear relationship, relative to the low-speed screw pump, high-speed screw pump although it can increase the flow and lift, but significantly increased power, high speed accelerated rotor And the stator wear, the screw will inevitably lead to failure, and high-speed screw rotor stator length is very short, easy to wear, thus shortening the life of the screw pump. This article Keywords: screw pump
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Through reducer or stepless speed regulation mechanism to reduce the speed, the exploration speed maintained at a reasonable range of three hundred revolutions per minute, and high-speed operation of the screw pump, the service life can be extended several times.
Second, the quality of the screw pump Screw pumps on the market now more types, relatively speaking, imported screw pump design, excellent material, but the higher prices, some services are not in place, high parts prices, long ordering cycle , May affect the normal operation of production.
Most of the domestic production of imported products imitation, product quality varies greatly in the choice of domestically produced products, considering its cost-effective time, the choice of low speed, long lead, transmission parts of good quality, long product life rating.
Third, to ensure that debris does not enter the wet mud sludge mixed with solid impurities will screw the rubber material stator damage, so to ensure that debris does not enter the cavity of the pump is very important, many sewage treatment plant before the pump Installed a grinder, and some grille installation or filter, blocking debris into the screw pump, grill should be promptly salvaged to avoid clogging.
Fourth, to maintain a constant outlet pressure Screw pump is a positive displacement pump, when the outlet is blocked, the pressure will gradually increase, so that the pressure exceeds the predetermined value. At this time a sharp increase in motor load. Transmission machinery related parts load Will also exceed the design value, serious motor burned occurs, the transmission parts broken.In order to avoid damage to the screw pump, usually at the outlet of the three screw pump bypass relief valve installed to stabilize the outlet pressure to maintain the normal operation of the pump.
Fifth, to avoid breaking Three screw pump will never allow the case of broken material operation, once occurred, the rubber stator due to dry friction, instantaneous heat generated and burned, so the grinder intact grille smooth is the normal operation of the screw pump One of the necessary conditions, therefore, some screw pumps are still installed in the pump body off material shutdown device, when a break occurs, due to the self-priming screw pump has the characteristics of the cavity will produce a vacuum, the vacuum device will screw pump Stop working