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lin06900
Wysłany: Pią 16:22, 19 Lis 2010
Temat postu: tory burch outlet Cycloidal rotor gear pump design
Cycloidal rotor gear pump design
Slap, so the surge natural frequency of the spring pulse frequency should be avoided in order to avoid the resonance. Inside and outside the rotor with the gap 5 and 5.1 Rotor pump power with the gap of the cylindrical outer rotor and the radial pump with the gap at about 0.03 - 0.25mm between, for large diameter, high speed large jump of pumping large value, and vice versa take a small value. Inner and outer rotor meshing tooth tip radial clearance is 0.02 ~ 0.15mm, on the oil viscosity is low, high pressure, low speed condition of the pump should be selected small value. Axial face and the face clearance between the pump cover is about 0.02 ~ 0.12mm. Meshing of the tooth tip clearance gap and affect the pump performance of the main factors , particularly the most influential face clearance, the leakage rate and pressure proportional to the cube. The greater the gap, the higher the pressure, leak more, the lower the volumetric efficiency of low viscosity, especially the diesel pump. In the design flow reserve is not the case, the gap is too large, or even to obtain the required supply pressure, of course, will not receive the oil; gap small can increase the volumetric efficiency, but the gap is too small, Jjn-r high precision and increased production costs, but also prone to jamming phenomenon. Powder metallurgy technology in October 2003 5.2 pump drive power pump drive power can be calculated by the formula N = No / Tit = APQ / Tlt (5) where,
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, Nf is the input power ( W); N0 is the output power (W); △ P is the pressure difference between the import and export pump (Pa); Q △ P is the pressure when the pump output flow (actual flow) (m3 / s); for the overall efficiency. The total efficiency of Tl: = 7 = (Nf-) / Sj '(No / Nb) = Nb / Nf ・ Q/Q0 where, for the mechanical efficiency; the volumetric efficiency; N for the mechanical loss power , w; N6 was pump oil power, w; Q0 theoretical flow for the pump, ln3 / S. Directly take into account when calculating the total efficiency, general admission = 0.45 ~ 0.75, the pressure is high,
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, the oil viscosity to take small values. 6 Conclusion At present, the overall design of cycloidal rotor pump very little relevant information, not to establish criteria for the design complete, the paper design to give a rough idea. Because the rotor parameters are linked to each other, so the selection of the parameters given in accordance with the principles of paper trial and error, modified, and finally determined. References 1 ZHANG Rui-fang. Oil pump rotor series model of powder metallurgy introduction of the draft. Tractor, 1980 (3): 152 Maohua Yong, Li Guoxiang, Xu Xiulan and so on. Cycloid tooth profile of the rotor type oil pump and the parameter of a formation. Shandong University (Engineering Science), 2002,32 (2): 172 ~ 1763 Where is Xing. Hydraulic components . Beijing: Mechanical Industry Press Du. 1982.1034 [Law] A. Shirin book. Yin D, CAO to translation. Car engine lubrication. Beijing: People's Publishing du traffic. 1981.165 hydraulic Department of Shanghai Second Polytechnic University. Hydraulic transmission and control. Shanghai : Shanghai Science and Technology Press, 1990, p. 2. 616 standard, ZHANG Rui-fang compilation. Nikos / Bertrand's rotor pump. Foreign tractors, 1985 (9): 237 machinery and electronics industry Luoyang Tractor Research Institute. Tractor Design Manual ( Volume). Beijing: China Machine Press, 1994.821,8238 camp wild Akira II. 1 - j-shaped internal mouth Fuzhuo water '/ features Qibo operator lz-o,. Japan edge mechanical testis homes encyclical Collection (Part 3). 1969.1381 ~ 13 889 Department of Chinese farming, mess ballast and so on. Mechanical Drive Design Manual (Revised). Beijing: Mechanical Industry Press Du. 1990.9421O Qusheng Guan, Sun from the tree. Improve rotor pump volumetric efficiency measures. Huazhong University of Science and Technology, 2001,
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,29 (1). Design Manual 36 3811 Diesel Editorial Board. Diesel Engine Design Manual (the book). Beijing: China Agricultural Machinery Press, 1984.417 ~ 421 Inspiration magazine subscription advertising by the Chinese Mechanical Engineering Society of Powder Metallurgy Branch , Metallurgy Committee of Chinese Society for Metals, China Nonferrous Metals Society of Powder Metallurgy and Metal Ceramics co-sponsored by the Academic Council,
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, Founded in August 1982, is the behavior of powder metallurgy founded the first journal, a majority of the writers and readers groups, covering a wide range of domestic and foreign public offering. My Journal is a bimonthly open large version 16 is now collecting in 2004 ad, interested,
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, Please click here to contact our journal in order to arrange layout. Contact: Liu Jie Address: No.11 Yongding Road, outside the Songzhuang Zip: 100078 Tel :010-67621317E-mail: fmyj @ chinajourna1. net. cn \ More articles related to topics:
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