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[Asia Pump Network News] twin-screw pump and screw pump have different characteristics, each has its own advantages. Xiao Bian today to introduce the working principle and characteristics of twin screw pump. Twin screw pump First, the working principle of the twin screw pump Twin screw pump is driven by the main shaft and the intermeshing spiral sleeve and the pump body or the liner between the formation of a constant volume sealed chamber, the media with the rotation of the screw shaft were sent The middle of the pump, the two together, and ultimately served on the pump outlet, so as to achieve the purpose of pump delivery. Twin screw pump can be divided into built-in bearings and external bearings in two forms. In the built-in bearing structure of the bearing lubrication by the transport. The external bearing structure of the twin-screw pump cavity with the bearing is separate. Due to the structure of this pump and the side clearance existing between the screws, it can deliver non-lubricative media. In addition, the timing gears are adjusted so that they do not come in contact with one another, while half the output torque is transmitted to the driven screw. As with all screw pumps, the external bearing twin screw pump also has a self-priming capability and most pump delivery elements themselves are double-suction symmetrically arranged to eliminate axial forces and also have a large suction height. Second, double screw pump features 1, the delivery of liquid smooth, no pulsation, no mixing, vibration, low noise. 2, a strong self-priming performance, multiphase mixed transport, the gas content is not higher than 80%, sediment concentration is not higher than 500g / m3. 3, External bearing structure, using independent lubrication, can transport a variety of non-lubricative media. 4, using synchronous gear drive, no contact between the two rotors, even if a short time spin anyway. 5, the pump body with heating jacket, you can transport a variety of clean or small solid particles containing low viscosity or high viscosity medium. 6, the correct choice of materials, and even can transport a lot of corrosive media. 7, double suction structure, there is no axial force on the rotor. 8, the shaft end mechanical seal or bellows mechanical seal, with long life, less leakage, the application of a wide range of features. Further Reading: pump valve pipe fittings Exhibition 2016 Exhibition of Information Industry, Internet (Xiamen) Technology Co., Ltd. Author: Asian pumps Network Editor: Yao Xiaoxia (QQ / micro letter: 2355962924) http://beng.liuti.cn/ (Hotline : 400-6030-811)