The flow rate of the 3G screw pump is linear with the rotational speed. The high-speed 3G screw pump can increase the flow rate and lift with respect to the low-speed 3G screw pump, but the power is obviously increased. 3G screw pump application characteristics and reasonable selection method The speed of the 3G screw pump is linear with the flow rate of the 3G screw pump. The high-speed 3G screw pump can increase the flow rate and head with respect to the low-speed 3G screw pump, but the power is obviously increased, and the high speed accelerates the rotor. The wear between the stator and the stator must cause the 3G screw pump to fail prematurely, and the fixed rotor length of the high-speed 3G screw pump is very short and easy to wear, thus shortening the service life of the 3G screw pump. Self Locking Nut, Top Lock Nut, Flange Lock Nut Ningbo Brightfast Machinery Industry Trade Co.,Ltd , https://www.brightfastener.com
The speed is reduced by the speed reducer or the stepless speed regulation mechanism, so that the surveying speed can be kept within a reasonable range of less than three hundred revolutions, and the service life can be extended several times compared with the high speed running 3G screw pump.
Second, the quality of 3G screw pump There are many types of 3G screw pumps on the market. The imported 3G screw pump has reasonable design, excellent material but high price, some services are not in place, the price of accessories is high, and the order period is long. May affect the normal operation of production. Most of the domestically produced imitation imported products have different quality. When using the domestically produced products, Botaibang should consider the cost-effective products with low speed, long lead, good transmission parts and long life.
Third, to ensure that debris does not enter the pump body wet sludge mixed solid debris will cause damage to the rubber material stator of the 3G screw pump, so it is very important to ensure that debris does not enter the pump cavity, many sewage plants in the pump A pulverizer is installed in front, and some grilling devices or screens are installed to block the debris from entering the 3G screw pump. The grille should be cleaned in time to avoid clogging.
4. Avoiding the 3G screw pump is not allowed to run under the condition of breaking the material. Once the rubber stator is burnt due to the dry friction, the crusher is intact and the grille is unblocked. Some 3G screw pumps also have a material shut-off device installed on the pump body. When the material is broken, the 3G screw pump will have a self-priming function, and the vacuum will cause the 3G screw pump to stop running.
V. Maintaining a constant outlet pressure The 3G screw pump is a positive displacement rotary pump. When the outlet end is blocked, the pressure will gradually increase, so that the motor load increases sharply when the predetermined pressure value is exceeded. The load of the parts related to the transmission machinery will also exceed the design value. In severe cases, the motor will burn out and the transmission parts will break. In order to avoid damage to the 3G screw pump, a bypass relief valve is usually installed at the outlet of the 3G screw pump to stabilize the outlet pressure and keep the pump running normally.
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
