Magnetofluid sealing device capable of realizing multistage gas diversion

Abstract

In order to solve the technical problems that in the prior art, gas generally and directly enters a cavity through a static shell, overall gas path design limitation is large, and the machining mode is complex, the invention provides a magnetofluid sealing device capable of achieving multistage gas diversion, and the magnetofluid sealing device comprises a transmission shaft and a base arranged outside the transmission shaft in a sleeving mode, wherein bearings and magnetic fluid sealing assemblies are respectively arranged between two ends of the base and the transmission shaft, a flow guidehole is formed in the transmission shaft, one end of the flow guide hole communicates with the cavity, and air holes communicating with the flow guide hole are formed in the circumferential face of the transmission shaft; and the bearings comprise a first bearing and a second bearing which are respectively located on two sides of each magnetic fluid sealing assembly; the air holes are located between the first bearing and the second bearing, and an air supply assembly is arranged on the base. Gas enters a rotating shaft through a dynamic seal part and the space between dynamic seals and then enters the cavity through deep holes in the rotating shaft, the arrangement design of gas pipes is more convenient, and the design and machining of the shell are simpler.

Description

technical field [0001] The invention relates to the technical field of magnetic fluid sealing, in particular to a magnetic fluid sealing device capable of realizing multi-stage gas splitting. Background technique [0002] Magnetic fluid sealing technology is a new type of sealing method. It refers to the use of magnetic fluid with high saturation magnetic strength to seal related mechanical equipment. Since magnetic fluid itself is a liquid fluid, it has the basic characteristics of liquid fluid and has The magnetism of magnetic solid materials, the magnetic fluid sealing technology is based on the use of the magnetic fluid's response to the magnetic field. The magnetic fluid seal is mainly composed of two parts, namely the magnetic fluid and the specially designed magnetic fluid sealing device. The magnetic fluid sealing device includes the magnetic shaft, magnetic pole, non-magnetic seat, bearing, permanent magnet and other parts. The magnetic fluid sealing device It is d...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the technical problems in the prior art that gas generally enters the cavity directly through a stationary shell, the design of the overall gas path is limited, and the processing method is relatively complicated, the present invention provides a magnetic valve that can realize multi-stage gas shunting. Fluid sealing device, the gas enters the rotating shaft through the dynamic seal and between the dynamic seals, and then enters the cavity through the deep hole on the rotating shaft, the air pipe arrangement design is more convenient, and the design and processing of the shell is simpler

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