Sealing device for uneven box body of ball mill

Abstract

The invention provides a sealing device for an uneven box body of a ball mill. The sealing device is composed of a moving ring and a static ring. The cross section of the moving ring is in an invertedC shape. The moving ring comprises an inner moving ring body arranged in the axial direction, an outer moving ring body and a movable connecting ring arranged in the radial direction. A rotating shaft is sleeved with the inner moving ring body, and the inner moving ring body is fixedly connected with the rotating shaft. The cross section of the static ring is in a C shape. The static ring comprises an inner static ring body arranged in the radial direction, an outer static ring body and a static connecting ring arranged in the radial direction. A clamping groove is formed in the outer staticring body. A positioning step is fixed to the box body through a bolt. An adjusting ring and a pressing strip are arranged on the inner side of the positioning step. The adjusting ring is located inside the clamping groove. The pressing strip is located on the outer periphery of the outer static ring body. An adjusting bolt for fixing the outer static ring and the positioning step is arranged on the pressing strip. By the adoption of the device, good sealing of a cavity containing lubricating grease between the rotating shaft and the box body can be achieved, meanwhile the axial deflection andthe radial deflection occurring in the rotating process can be controlled, and the sealing effect under the deflection working condition is guaranteed.

Description

technical field [0001] The invention provides a sealing device, in particular a sealing device used for sealing a rotating shaft in a ball mill and applicable to an uneven box side wall, belonging to the technical field of mechanical sealing. Background technique [0002] The labyrinth seal is to set a number of annular sealing teeth arranged in sequence around the rotating shaft. A series of interception gaps and expansion cavities are formed between the teeth. device for the purpose. Because there is a gap between the rotor and the casing of the labyrinth seal, there is no solid contact, and thermal expansion is allowed, so it is suitable for high temperature, high pressure, and high speed frequency occasions. This sealing form is widely used in steam turbines, gas turbines, compressors, and blowers. The shaft end and the seal between stages. [0003] In some occasions where the use requirements are relatively strict, the sealing device must not only achieve zero leakage...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects in the background technology, the present invention provides a sealing device for the uneven box body of the ball mill, which can better seal the lubricating grease chamber between the rotating shaft and the box body, and at the same time It can also overcome the problems of difficult installation and poor sealing effect caused by the uneven side wall of the box in the ball mill

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