High-speed multistage turbine vacuum pump and evacuation method thereof
A vacuum pump, high-speed technology, applied in the field of high-speed turbo vacuum pump, can solve the problems of too many devices, complicated pipeline connections, use restrictions, etc., and achieve the effects of reasonable structure, reduced energy consumption, and high reliability
Active Publication Date: 2011-06-29
振欣透平机械有限公司
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Problems solved by technology
[0010] Although the cantilever high-speed turbo vacuum pump has the above advantages, it must be pumped in series at least two levels when the vacuum is greater than 50Kpa, especially when pumping at multiple points and multiple vacuum positions, if the cantilever high-speed turbo vacuum pump is used, there will be The pipeline connection is complicated, there are too many devices and other shortcomings, so the use in the whole paper machine production line is limited to a certain extent
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[0025]High-speed multi-stage turbo vacuum pump, the output end of the drive motor 1 is connected to the gear speed-up box 3 through the flexible motor coupling 2, the gear speed-up box 3 adopts a single-stage speed-up, and its output end is through the flexible main shaft coupling 21 is connected to the front end of the main shaft 4, the rotating speed of the main shaft 4 is above 5000r / min, the main shaft 4 passes through the radial sliding bearings 14, 14a, oil seals 15a, 15 installed in the front bearing housing 5 and the rear bearing housing 5a installed at both ends of the casing 16 The support suspension is in the casing 16 and is in sealing and rotational cooperation with the casing 16 . In order to facilitate maintenance and installation, the casing 16 adopts a horizontal split structure, which is composed of an upper casing 16a and a lower casing 16b. The shaft end seals 11a and 11 are arranged to seal and cooperate with the main shaft 4; the front bearing seat 5 and ...
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The invention discloses a high-speed multistage turbine vacuum pump and an evacuation method thereof, belonging to the technical field of turbine vacuum pumps. The evacuation of multiple processes and different vacuum degrees is realized through multistage high-speed centrifugal impellers, a driving motor of the turbine vacuum pump is connected with a main shaft after being accelerated by a gear speed-increasing box, the main shaft is supported and suspended in a machine shell, a set of centrifugal impellers is connected to the main shaft in the same direction in series, the outer side of thefinal-stage centrifugal impeller is matched and provided with a balance disc, a single working chamber is respectively formed between each-stage centrifugal impeller and the machine shell, the working chambers are communicated one by one through passageways, a set of suction ports and one discharge port are correspondingly arranged on the machine shell, a balance cavity is formed between the balance disc and the machine shell, and a balance pipe for communicating the balance cavity with each suction port is matched and arranged on the machine shell. By adopting a single-shaft multistage evacuation structure, the high-speed multistage turbine vacuum pump can realize the simultaneous evacuation of multiple processes and different vacuum degrees and greatly reduce the energy consumption of avacuum pump, and simultaneously has the advantages of compact structure, high reliability, no need of power liquid-sealing rings, environmental protection and the like.
Description
technical field [0001] The invention belongs to the technical field of turbo vacuum pumps, including vacuum equipment and turbo machinery technology, and in particular relates to a high-speed turbo vacuum pump that uses a suction port of a centrifugal impeller to extract vacuum. Background technique [0002] Vacuum pumps usually form a vacuum system with other equipment, and are widely used in petroleum, chemical, machinery, mining, light industry, medicine, food, electronics, metallurgy, aerospace and other departments. Traditional vacuum pump products that are widely used mainly include liquid ring vacuum pumps, reciprocating Type vacuum pump, Roots vacuum pump and rotary vane vacuum pump, etc. [0003] Among them, the liquid ring vacuum pump is a rough vacuum pump and can also be used as a compressor. It is widely used in industrial production processes such as vacuum filtration, vacuum water diversion, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum mois...
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IPC IPC(8): F04D1/08F04D29/42
Inventor 温建新童小龙李月仙倪建军郁园赞涂江波杨媛媛陈杰
Owner 振欣透平机械有限公司