Composite sealing device for centrifugal machine bearing

Abstract

The invention discloses a composite sealing device for a centrifugal machine bearing. The composite sealing device comprises a transmission cover (2), an outer bearing cover (3), a bearing seat (4), a bearing (5), an inner bearing cover (6), a sealing bracket (7) and a sealing gland (8) which are sequentially sleeved outside a centrifuge drum spindle (1); and a sealing element (9) is arranged between the sealing bracket (7) and the drum spindle (1), an airtight sealing passage (7.1) is arranged on the sealing bracket (7), the inner end of the airtight sealing passage (7.1) is pressed close to the outer surface of the drum spindle (1) and is located between the sealing element (9) and the sealing gland (8), and the outer end of the airtight sealing passage (7.1) is connected with a high-pressure air source (10). The composite sealing device provided by the invention can effectively prevent such harmful substances as ultra-fine hard powder, corrosive gas and the like from entering the bearing, and belongs to the technical field of the sealing device.

Description

technical field [0001] The invention belongs to the technical field of sealing devices, in particular to a centrifuge bearing sealing device. Background technique [0002] The centrifuge uses the principle of centrifugal separation to send the suspension into the drum through the feed pipe and the screw outlet. Under the action of centrifugal force generated by high-speed rotation, the solid phase particles with a larger specific gravity are deposited on the inner wall of the drum and interact with the drum. The relative moving helical blades continuously scrape off the solid phase particles deposited on the inner wall of the drum and push them out of the slag outlet. The separated clear liquid flows out of the drum through the opening of the liquid layer regulating plate. [0003] With the rapid development of industrial technology and the continuous expansion of the application industry of centrifuges, the requirements of modern industry for industrial centrifuges are bec...

AI Technical Summary

Problems solved by technology

Especially in some industries such as chemical industry and pharmaceutical industry, the corrosive gas and some hard particulate materials volatilized by the materials, as the speed of the centrifuge is getting higher and higher, in the long-term operation of the centrifuge, due to the environmental pressure Changes in factors such as spindle bearings will enter the rotating parts of the spindle bearing, corrode and wear the rotating parts of the spindle bearing, and seriously affect the service life of the rotating parts such as the spindle and bearings

The corrosion and wear of the rotating parts of the centrifuge spindle bearing due to corrosive gases and hard particulate materials are more prominent, and the general centrifuge contact bearing sealing method can no longer meet the industrial requirements

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