Dry screw compressor, also known as no oil-free screw air compressor, mostly twin-screw air compressor, air compressor suction means manufacturers Which only the inner rotor, the rotor is lubricated and sealed by brushing In coating to the surface of the rotor teeth. In the absence of lubricating oil lubrication and take small particles, gases would rotor housing wall, airway corrosion, so in the traditional injected screw rotor material, there are usually spray coating, such as spraying polytetrafluoroethylene , molybdenum disulfide, Teflon and other compressor manufacturers, to ensure rotor deformation, not corrosion. Single-stage dry screw compressor pressure ratio up to 3.5: 1. Small dry screw air compressor: refers to power 100 ~ 2000kW of dry screw air compressor screw air compressors is how classified it.? Screw compressor is how does it work? Screw air compressors, air compressor from factory to points of lubrication lease, divided into oil-injected screw air compressors and oil-free screw air compressors two species, including oil-free screw air compressor can be divided into two kinds of air press factory outlets, namely water lubrication oil-free screw air compressors, dry screw air compressors. Injected screw air compressor oil-injected screw air compressor, also known as the oil-lubricated screw air compressors, refers to the rotor interior in the intake air, but also inhaled lubricants (lubrication of the rotor and sealing effect), lubricating oil and compressed air are mixed together. Single-stage fuel injection screw compressor pressure ratio up to 15: 1. Qin Wei Air (FIG), screw air compressor manufacturers, air compressor manufacturers Shijiazhuang provided by Compressor Co., Ltd. Xianyang Qin Wei. Xianyang Qin Wei Compressor Co. (www.xykyj.cn/) to provide "air compressor and accessories, general machinery parts," such as business, the company has "Wei Qin brand, Coatler card (C?te children)" and other brands. Focus on compression, separation equipment and other industries, have higher visibility in Xianyang. Welcomes inquiries, contact: Liu.