1, Dry-type screw vacuum pump is a bit: Dry-type screw vacuum pump at work, no friction between each other, the operation is relatively stable, low noise, the working chamber without lubricating oil, therefore, dry screw vacuum pump Work can be extracted with a large amount of water vapor and a small amount of dust gas occasions, the ultimate vacuum higher, lower power consumption, with energy saving, maintenance-free advantages. It can be said that it is an upgraded version of the oil-sealed vacuum pump. Dry screw vacuum pump working principle and structure (Asia Fluid Network) 2, dry screw vacuum pump working principle: dry screw vacuum pump working principle is mainly the use of gear synchronous reverse rotation of the intermeshing and not in contact with the left and right screw For high-speed rotation, the use of the pump housing and intermeshing spiral spiral groove separated into multiple spaces, the formation of multiple stages, the gas in the same groove (cylindrical pitch) for transmission movement, but no compression, only the most screw The terminal helix has a compressive effect on the gas. Screw pressure gradient between the various levels can be formed to disperse pressure and improve the compression ratio. The gap and pump speed of each department have a great influence on the performance of the pump. Screw in the design of the various parts of the gap, we must consider the expansion, processing and assembly accuracy and working environment (such as the removal of dust-containing gas, etc.). The pump and Roots vacuum pump without exhaust valve. 3, dry screw vacuum pump Structure and Principle: Dry-type screw vacuum pump is a vertical structure, the intake port above, the exhaust port in the middle, the lower part of the motor and lubricating oil pool. Screw rotor was hollow, cantilever support structure. Synchronous drive gear is located below the bearing support. The variable frequency motor is connected with the active rotor through the coupling. The pump gas path is shorter, and the vertical structure of the exclusion of dust-containing gas is more favorable. Pump housing with water cooling, pump maintenance is also convenient. Dry screw vacuum pump selection of the appropriate simple screw tooth cross-section, then its advantage is easy to manufacture, can ensure high machining accuracy, and easy to balance. According to its working principle, we can understand that dry-type screw vacuum pump is a high ultimate vacuum, low power consumption, with energy saving, maintenance-free advantages. As China's industrial development, its role in the market will be more and more. This article is published in Asia Fluid Network Editor, please indicate Asia Fluid Network, to promote service hotline:, QQ:, related articles: trochoidal line vacuum pump working principle and structure of fixed-chip vacuum pump working principle and structure
Anti-magnetic: Because the ceramic bearing is non-magnetic and does not absorb dust, it can reduce the early peeling of the bearing, noise, etc., and can be used in demagnetization equipment. Precision instruments and other fields.
Insulation Due to the high resistance of ceramic bearings, it can be protected from arc damage and can be used in various electrical equipment requiring insulation.
self-lubricating characteristics Because of the unique oil-free self-lubricating properties of ceramic bearing materials, in the ultra-high vacuum environment, it can overcome the problem that ordinary bearings can not achieve lubrication.
High-speed ceramic bearing has the advantages of cold resistance, small elasticity, high pressure resistance, poor thermal conductivity, light weight and small friction coefficient. It can be applied to high-speed spindles of 12000 rpm/-75000 rpm and other high speeds. In precision equipment;
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