QSN three screw pump in the structure and performance characteristics of what?

QSN three screw pump liquid is transported by a variety of non-solid particles, non-corrosive oils and similar lubricants lubricating oil, the viscosity of 1.2-100oE (3.0-760cst), high viscosity Liquid can also be heated, viscosity reduction after delivery. Xiao Bian and everyone introduced QSN three screw pump in the structure and performance characteristics of what? QSN horizontal three screw pump QSN three screw pump in the structure and performance characteristics 1, the structure is simple: the pump itself mainly by the pump body, pump sleeve (sleeve) and three screws, with a variety of structures, the general small flow 0.2 -6.3 m3 / h, low pressure 2.5Mpa The following pump body and bushing together (collectively referred to as the pump body), vertical, horizontal installation, pump inlet and outlet port can be 90 degrees apart from any installation , Shaft seal for the end of the mechanical seal, some products plus a double seal oil seal form. Pumps, pump bodies and pump housings above the medium flow rate are separate, separate parts and the pump housings are sealed inside the pump chamber. Large flow pump more double suction structure, the same size of the pump with double suction structure flow can be double the original single suction pump structure. Installation form is divided into vertical, horizontal, flange bracket type, hanging, immersion and other methods can be for the user to choose to meet different occasions and working conditions conditions. Shaft seal form Depending on the media, there are mechanical seals and skeleton oil seal and packing seals or O-ring multiple seals and other forms of seal. Pump can be equipped with DC motor or AC motor drive. 2, Long service life: The main screw of the three-screw pump is driven by the original motor. The pressure liquid driven drives the driven screw to rotate around the axis and is driven by hydraulic pressure. There is no mutual mechanical friction between the driving screw and the driven screw Or contact, the active screw and the driven screw between the screw and the pump sleeve are provided with a layer of film protection and film support, so the pump mechanical friction is small, to ensure the life of the screw pump, the general delivery viscosity of 100E (75cst ) Lubricating oil, turbine oil, hydraulic oil and other lubricants better medium. 3, no pulse and vibration is small: the transport of liquid in the pump to do axial uniform linear motion, so the hydraulic pulse is small, stable flow, low noise, due to the rotation part of the inertia, the starting torque and vibration. 4, high efficiency: the efficiency of the pump can generally reach more than 85%, are energy efficient products, delivery of a certain viscosity of the oil medium, can replace the centrifugal pump. 5, has a high self-priming capacity: Self-priming screw pump capacity depends on the following factors (screw lead, medium viscosity, drive speed, etc.) and the corresponding representation of the relationship between cavitation allowance NPSHr. 6, In order to ensure the driving force of pumps, motors and other driving devices as well as the safety of the instrumentation and facilities such as pipes, valves and fittings, the pumps above the medium flow pressure are equipped with safety valves. When the pressure exceeds the pressure set by the safety valve, the safety valve Automatically open, the excess pressure oil back to the pump inlet and low pressure chamber. Thus ensuring the safe use of the pump. 7, special-type pump mainly refers to: Designed for special industries or special customers supporting screw pump device. For example, one of them is a special pump for hydropower control equipment. The structure is vertical: single and double outlet. The hydraulic balance mode of the general high-pressure series three-screw pump products is designed as the hydraulic balance mode of low-pressure chamber oil return. There are products designed for high temperature oil transport insulation three screw pump can be summarized as such products. According to the user's various needs and working conditions of separate design and manufacturing. 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)