1, what is Roots vacuum pump? Roots vacuum pump is a rotary varactor vacuum pump, which is the Roots blower evolved. 2, Roots vacuum working principle is what? Roots vacuum pump works are: the rotor is constantly rotating, being sucked gas from the intake port into the space between the rotor and the pump housing, and then discharged through the exhaust port. As inhalation after the space is completely closed state, so the gas in the pump chamber is not compressed and expanded. However, when the top of the rotor turns over the edge of the exhaust port and the space communicates with the exhaust side, a part of the gas is returned to the space due to the higher pressure of the exhaust gas, so that the gas pressure suddenly increases. When the rotor continues to rotate, the gas is discharged outside the pump. Roots vacuum pump is mainly with a pair of synchronous, high-speed rotation of the shoe-shaped rotor of the vacuum pump, but for its own can not be a separate exhaust, the front stage or with oil seal, water ring and so can be directly into the atmosphere. The pump is equipped with two to the opposite direction synchronous operation of the leaf rotor, rotor, rotor and pump housing inner wall with a small gap without contact with each other a varactor vacuum pump. Roots vacuum pump working principle and structure (Asia Fluid Network) 3, Roots vacuum pump structure diagram: As the Roots vacuum pump structure shown: In the pump chamber, there are two "8" shaped rotor perpendicular to each other Is mounted on a pair of parallel shafts and is rotated synchronously by a pair of gear belts having a transmission ratio of 1 in opposite directions to each other. Between the rotors, between the rotor and the pump housing to maintain a certain gap, you can achieve high-speed operation. Because Roots vacuum pump is a type of vacuum pump without internal compression, the compression ratio is usually very low, so the high and medium vacuum pumps need foreline pump. Roots vacuum pump ultimate vacuum in addition to depend on the pump structure and manufacturing accuracy, but also depends on the foreline pump ultimate vacuum. In order to increase the pump's ultimate vacuum, Roots vacuum pumps can be used in series. Roots vacuum pumps work like Roots blowers. Due to the constant rotation of the rotor of the Roots vacuum pump, the evacuated gas is drawn into the space v0 between the rotor and the pump housing through the air inlet and then discharged through the air outlet. Since inhaled v0 space is completely closed state, so the gas in the pump chamber is not compressed and expanded. However, when the top of the rotor turns over the edge of the exhaust port, when the v0 space communicates with the exhaust side, since the pressure of the exhaust side gas is higher, a part of the gas bounces back into the space v0 to make the gas pressure suddenly increase. When the rotor continues to rotate, the gas is discharged outside the pump. As shown in the Roots vacuum pump rotor from 0 ° to 180 ° of the extraction process. In the 0 ° position (a), the lower rotor encloses v0 volume of gas from the pump inlet. When turned to 45 ° position (Figure b), the chamber communicates with the exhaust port. As the exhaust side of the higher pressure, causing part of the gas back to punch over. When turned to the 90 ° position (c), the gas enclosed by the lower rotor is vented to the pump together with the backflushing gas. At this time, the upper rotor is also filled with v0 volume of gas from the pump inlet. When the rotor continues to rotate to 135 ° (d in the figure), the gas enclosed in the upper rotor communicates with the exhaust port, and the above process is repeated. The 180 ° (Figure e) position is the same as the 0 ° position. A total of four v0 volume of gas is discharged during one revolution of the rotor shaft. In summary, Roots vacuum pump's working principle is not simple, but to understand its working principle is very important. The user can select the product from its working principle, the producer can improve the deficiencies of the product and improve the competitiveness of the product from its working principle. In general, with the improvement of China's industrial level, how to improve the competitiveness of products is very necessary for the market share of products. This article is published by Asia Fluid Network Editor, please indicate Asia Fluid Network, Service Hotline:, QQ:; Related Posts: Dry-type screw vacuum pump working principle and structure of troching line vacuum pump working principle and structure
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