Abstract
Pump is fluid mechanics, is a kind of power will be the driving force behind efforts to be translated into the pressure transmission fluid potential energy and kinetic energy of fluid machinery. Pumps in various sectors of the national economy have been widely used and people's lives is inextricably relationship. For example: urban water supply, agricultural drainage, irrigation; mining ventilation; metallurgical industry of gas, liquid delivery; and the oil industry, chemical industry and so on. According to statistics, the country's total electricity consumption species, pump 30% of power consumption. As technology advances, the scope of application of pump increasing, various applications of fluid mechanical parameters and reliability requirements have become more sophisticated, tend to focus on large capacity, high speed, high efficiency and automation. A wide variety of pumps, the design of the target volume of the screw pump to carry out research and design.
Screw pump is turning to the use of screw liquid smoke emission. Screw to the middle of the initiative, motivated by the original rotation, the screw is driven on both sides of screw, with the initiative for the screw reverse rotation. Lord, are driven double-headed screw thread of the thread. As a result of the mutual engagement of the screw and the screw and tube wall lining of the close co-operation of the inhalation in the pump outlet port and between, will be divided into one or more enclosed space. With the rotating screw and meshing, the sealed space in the pump suction side evolving to inhaled enclosed room in which the liquid, and from inhalation of room along the screw axis to move from row to push the client, will be closed in the space continuous discharge of liquid, like a nut in the thread when he was constantly turning the situation to move forward, this is the basic working principle of the screw pump.
key words: Single screw pump; design; Hydraulik calculation; Engineering Drawing
