[Asia pump network hearing] today's market, high pressure gear pump flow variety, line staff to learn more about some of this knowledge is beneficial harmless, and later he can distinguish this type, the following Xiaobian take everyone Learn about the main categories of high-pressure this round of pumps. High-pressure gear pump can be divided into external and internal meshing type. External gear pump has the advantages of simple structure, small size, light weight, easy maintenance, low prices, reliable, self-priming ability, not sensitive to oil pollution. Its disadvantage is the gear to withstand unbalanced radial hydraulic pressure, bearing wear and tear, a large amount of leakage. Increased working pressure is limited by radial hydraulic forces and volumetric efficiencies; large flow pulsations and high noise levels. Internal gear pump compact structure, small size, light weight. As the gear rotates in the same direction, the relative sliding speed of the tooth surface is small, the wear is slight, the service life is long, and the flow pulsation is smaller than the external gear pump, so the noise is relatively small. Internal gear pumps allow the use of higher speeds for higher volumetric efficiency. However, the internal gear pump also exists the problem of unbalanced radial hydraulic pressure, limiting its working pressure to further improve. In addition, the displacement of the gear pump can not be adjusted, to a certain extent, limits the scope of its use, compared with the external gear pump, internal gear pump with its small size, light weight, low noise, self-priming performance, flow Pulsation and other advantages of much attention, its output in gear pump production accounts for a large proportion. In some developed countries, the output ratio of the internal gear and external gear pump is close to 1: 1. In accordance with the purpose of high-pressure gear pump can be divided into ordinary gear pumps, special gear pumps and high parameters of polymer delivery gear pump. Most of the ordinary gear pump in the transmission of liquid oil or used in hydraulic systems, therefore, also known as oil pump or hydraulic pump. Special gear pump can be used to transport high viscosity liquid, the working pressure is usually not more than 1.5Mpa, are widely used in petrochemical, textile, food, coatings and other industries. Polymer delivery gear pump is used to transport chemical processes in the high temperature, high pressure, viscous polymer. From ordinary gear pump to the polymer delivery gear pump, their design and manufacture of the difficulty is harsh with the working conditions and escalating. Industry leaders Guangzhou IFAT China Water Show article belongs to the building industry interconnect (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor: gogoing (QQ / micro-channel:) starting : Http://beng.liuti.cn/ (Service Hotline:)
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