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High viscosity Roots pump principle and what medium suitable Roots pump delivery

July 11, 2022
A: high-viscosity Roots pump works In the high-viscosity Roots pump cavity, mounted perpendicular to each other on a pair of parallel shaft with two "8" shaped rotor, the gear ratio of 1 by a pair of gear action each other Reverse synchronous rotary motion. Between the rotors, between the rotor and the pump housing to maintain a certain gap, you can achieve high-speed operation. As the Roots pump is a vacuum pump without internal compression, the compression ratio is usually very low, so high, medium vacuum pump requires foreline pump. In addition to the pump's own structure and manufacturing accuracy, the ultimate vacuum of a "three-screw pump" Roots pump also depends on the ultimate vacuum of the foreline pump. In order to increase the pump's ultimate vacuum, Roots pumps can be used in series. Second: the application of high viscosity Roots pump ordinary high viscosity Roots pump is mainly suitable for conveying lubricated medium, the medium can not contain solid particles and fibers, can not be corrosive, the conveying medium temperature can not be higher than 100 ℃, the viscosity A lubricant liquid ranging from 5 x 10-6 mm2 / s to 1.5 x 10-3 mm2 / s (5-1500 cSt) or other liquid of a similar lubricating oil nature. High viscosity Roots pumps, is based on the ordinary Roots pump, through the heating to solve the transmission of asphalt and condensate from the restructuring, and its principle is through the pump housing or end cap insulation layer, through the heat Oil or steam circulating in the insulation to achieve the effect of the pump insulation, so as to achieve the asphalt and other media can not be transported at room temperature function, the pump can work continuously or intermittently, running in good condition.
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