[Three rain valve to recommend the star product - Mechanical seal]: Main features vacuum rake dryer is as follows: (1) the material is heated indirectly with steam jacket and exhaust gas under high vacuum, it is particularly suitable for not high temperature, easy to produce when the material powder is easily oxidized or dried at an elevated temperature; (2) a high degree of vacuum operation, the absolute pressure is typically in the range of 8 ~ 50kPa; (3) low speed (4 ~ 10 r / min) Reversible, rake teeth set on the spindle continuously toggle the material toward the sides or central M74N-180 mechanical seal, the material is constantly flip and heating, which continue to evaporate moisture from the vacuum pump and vent exit, the material gradually dry; (4) the operation is not continuous, intermittent charging and discharging; (5) spindle "aspect ratio" is large, the heating up process, a large amount of axial thermal expansion; poor (6) manufacturing precision, particularly is the concentricity of the rotor and the stator is difficult to guarantee. [Three rain valve to recommend the star product - Mechanical seal] Description: fluid friction. Mechanical seal process is running, with the rise of the spindle speed, the mechanical seal face friction within (ie, the dynamic between the ring), will gradually form a sliding bearing the same stable lubricating film M74N-145 mechanical seal, which kinds of thin lubricating film thickness is much greater than the seal face roughness can be completely separated from the two end. At this point there is no direct contact between the end face of the basic friction M74N-165 aircraft produced only by the viscous fluid shear seal, thus friction and wear between the end faces are greatly reduced power consumption and heat are also reduced accordingly. This condition is called end surface friction fluid friction, acoustic emission signals generated by the relatively weak, small amplitude, low frequency. M74N-140 mechanical seal | mechanical seals manufacturer selected three rain (certified) | Wuwei mechanical seal is provided by three rain Valve Co., Ltd. of Tianjin. Valve Co., Ltd. Tianjin three rain (www.tjsymf.com) (www.tjsymf.com) is a leader in Tianjin, seals, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In three rain valve leadership with the staff warmly welcome all inquiries negotiations to create three rain valve a better future.