The working principle of Roots vacuum pump
2024-08-30
Summary
Roots vacuum pump (referred to as Roots pump) refers to a variable capacity vacuum pump with two relatively synchronous rotating blade-like rotors, and no contact between the rotors and each other in the small gap between the rotors and the inner wall of the pump casing.
Roots vacuum pumpThe working principle
Roots vacuum pump (referred to as Roots pump) refers to a variable capacity vacuum pump with two relatively synchronized blades and a small gap with the inner wall of the pump casing without contact with each other.
Roots vacuum pump in petroleum, chemical, plastics, pesticides, steam turbine dynamic balance, aerospace development can be simulated device design after a long time of testing, in our country should vigorously promote the application of technology. At the same time widely used in petroleum, chemical, metallurgy, textile and other industries. The vacuum pump accessory can be used as a vacuum pump silencer to control the noise of the automobile vacuum pump.
Roots vacuum pump is a vacuum pump without internal compression, usually with a very low compression ratio, so the development of high and medium vacuum pumps requires a pre-pump. The vacuum pump by pressing a pair of blades in the pump chamber, so that the synchronous movement and reverse, to achieve pumping. Roots vacuum pump is a kind of sole-shaped mechanical vacuum pump with a pair of synchronous development of high speed. This kind of pump cannot be without a separate pump. In the former, we need teachers to equip oil seals, water rings, etc. to directly cause exhaust.
Roots vacuum pumpThe structure and working principle are similar to Roots blower. When working, the suction port is connected to the main pump of the vacuum container or vacuum system. This effect of the vacuum pump does not understand the contact, the gap with the pump casing is generally 0.1~0.8mm; do not need to use oil as lubrication. The profile includes circular arc, involute, cycloid, etc. The volume utilization rate of the involute pump is high, and the processing technology accuracy is relatively easy to be guaranteed, so the type line is usually involute. The rotation speed of Roots vacuum pump can be as high as 3450~4100 r/min; The pumping speed is 30 ~ 10000L\u002fs(1l = 10-3m3); Vacuum limit: single stage is 6.5 × 10-2Pa, double stage is 1 × 10-3Pa. The vacuum limit of the Roots vacuum pump depends not only on the economic structure and manufacturing accuracy of the pump itself, but also on the limit of the pump before the vacuum. In order that we can effectively improve the ultimate vacuum of the pump, the Roots pump can be used in series. The working principle of Roots pump is similar to that of Roots blower. Due to the continuous improvement of different effects of learning, it is sucked from the intake port to the v0 with the pump casing, and then directly discharged through the exhaust port. Due to the natural suction v0 is completely closed management state, so, in the pump chamber we do not have time to compress and expand. However, when the top turns over the edge of the exhaust port and v0 communicates with the exhaust side, due to the high pressure requirement that can be generated on the exhaust side due to the system design, a large part of it will be flushed back into v0, causing the protection environment pressure to suddenly begin to increase significantly. When continuing, do not leave the pump.Roots vacuum pumpIn the pump cavity, there are two "8" shaped system technologies that can be installed perpendicularly to each other on a pair of parallel shafts. A pair of gear belts with a transmission design mass ratio of 1 move and develop independently of each other. The position of the mechanical movement of the reverse synchronous control motor can effectively realize high-speed operation by keeping a certain gap with the inner wall area of the pump casing.
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