A kind of underwater bearing and sealing device of water flushing slag mixing machine

Abstract

The invention discloses an underwater bearing of a flush slag stirring cage machine and a sealing device of the underwater bearing, and belongs to the technical field of stirring cage machines. The underwater bearing comprises three stages of sealing structures. A combined labyrinth seal serves as the first stage, that is, a sealing seat is fixed to a bearing pedestal, and an inverted sealing cup is fixed to a shaft sleeve; and a clearance between the inverted sealing cup and the sealing seat is sealed through a labyrinth sealing ring. A mechanical seal serves as the second stage, that is, a moving ring is fixed in a moving ring support, the moving ring support is pressed by a spring, and the moving ring support is arranged in the inverted sealing cup; and a static ring is fixed in a static ring support, the static ring support is arranged in the sealing seat, a spindle of the stirring cage machine drives the moving ring support to rotate, and then the moving ring is driven to rotate relative to the static ring. A combined frame oil seal serves as the third stage and comprises the multi-layer combined dual-lip frame oil seal. The underwater bearing is sealed, and therefore the service life of the bearing is prolonged to one year or above from three months, the equipment maintenance amount is relieved, production cost is reduced, and the underwater bearing can be suitable for similar work conditions decreased the fields of smelting, chemical engineering and the like.

Description

technical field [0001] The invention relates to the technical field of cage stirring machines, in particular to an underwater bearing and a sealing device of a water washing slag stirring machine. Background technique [0002] When smelting pig iron, the Mingte blast furnace water flushing slag treatment system has the characteristics of compact equipment layout, small footprint, energy saving and environmental protection, so it is widely used in the blast furnace slag treatment system in iron and steel smelting enterprises, and its core equipment is the stirring cage The machine and the cage mixing machine continuously rotate the spiral blades placed in the water slag pool by controlling the inclination to continuously transport the water slag formed by hydraulic flushing upwards, and realize the separation of slag and water during the spiral upward process, and obtain extremely high economic value. dry slag raw material. [0003] The main shaft and tail bearing of the cag...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that the existing underwater bearings cannot be reliably sealed, the present invention provides an underwater bearing of a water flushing slag mixing machine and its sealing device; the present invention adopts a three-stage seal combining a combined seal and an improved mechanical seal This method seals the underwater bearing, which increases the service life of the bearing from three months to more than one year, which greatly reduces the amount of equipment maintenance, reduces production costs, and significantly improves production efficiency. It is suitable for smelting, chemical and other fields similar underwater sealing

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