Sealing device for transmission input shafts in vacuum environment and using method of sealing device

Abstract

The invention discloses a sealing device for transmission input shafts in a vacuum environment and a using method of the sealing device. The sealing device comprises a transmission input shaft, elastic shaft check rings, magnetic liquids, magnetic poles, magnets, O-shaped rings, special-made gaskets, outer casings, angular contact ball bearings, pairing ferrules, locking blocks, set screws with flat points, end caps, hexagon socket head cap screws, glue, lock nuts, V-shaped oil seals, a four-way connection block, a water outlet connector, a water inlet connector, a water delaying baffle block, outer water channel ferrule pieces and oil, wherein an oil seal limiting groove, check ring shaft grooves, magnetic liquid chambers, shaft shoulders, locking threads and equal division shaft kerfs are arranged on the transmission input shaft. According to the sealing device, novel magnetic fluid materials are applied for vacuum seal, a water cooling system is applied for cooling, by means of the sealing device, thermal damage is reduced in thermal field environments, magnetic effects of magnetism work pieces are improved, the vacuum sealing performance is good, and the sealing device can be used in vacuum sealing devices with higher vacuum requirements.

Description

technical field [0001] The present invention relates to the most critical vacuum sealing problem during the power input of mechanical equipment working in a vacuum environment, and also relates to the cooling problem of mechanical parts working in a thermal field environment, and especially relates to a sealing device for a transmission input shaft in a vacuum environment and how to use it. Background technique [0002] For mechanical equipment working in a vacuum-sealed environment, the required power must be provided by the outside. In the process of transmitting power to the vacuum chamber, there is a vacuum sealing problem, especially for the rotating transmission shaft, the vacuum sealing is a difficult problem. . The conventional solution to sealing is to use multi-stage sealing rings for sealing, but for high-required vacuum sealing, such as the vacuum degree of single crystal growth environment requiring more than 99.99%, multi-stage sealing rings are used to I...

AI Technical Summary

Problems solved by technology

The conventional solution to sealing is to use multi-stage sealing rings for sealing, but for high-required vacuum sealing, such as the vacuum degree of single crystal growth environment requiring more than 99.99%, multi-stage sealing rings are used to It is very difficult to achieve sealing, and it may be necessary to use multi-stage sealing rings to meet the vacuum requirements, but it cannot be achieved in a limited space

With the advancement of scientific research in recent years, people have widely used the effect of magnetic fields and found that ferrofluid can be used as a seal, but in specific use, it is not as simple as our commonly used O-rings. To its flow and sealing, and because of its magnetic properties, it is necessary to consider the matching magnetic poles, relative positions, etc. Different spaces and different installation positions will affect the sealing effect of magnetic fluid

And because the magnetic fluid seal often works in a hot field environment, the related parts are easily damaged by heat, which affects the magnetic effect of the magnetic work piece and shortens the service life

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