Hollow spindle device for powder concentrator

Abstract

The invention discloses a hollow spindle device for a powder concentrator and relates to a spindle device for the powder concentrator. The spindle device comprises a shaft I, a shaft II, a structuralseamless steel pipe I, a structural seamless steel pipe II, a flange I and a flange II, and is characterized in that the main portion ofa spindle is of a hollow structure; the shaft I and the flange Iare fixed to the structural seamless steel pipe I in a welded mode to form the upper half portion of the spindle; the shaft II and the flange II are fixed to the structural seamless steel pipe II ina welded mode to form a lower half portion of the spindle; a cage wheel is mounted between the upper half portion and the lower half portion of the spindle; the cage wheel is fixed through the flangeI, the flange II and flange connecting bolts matched with the cage wheel to form thecomplete set of spindle device. The hollow spindle device is the novel spindle device with the higher torsion property on the premise of not increasing steel input.

Description

technical field [0001] The invention relates to a main shaft device for a powder separator, which is suitable for powder separators of grinding systems in industries such as building materials, chemical industry, metallurgy, power plants, and mines. Background technique [0002] The powder separator is one of the important grinding system equipment. The material enters the powder separator from the chute, and the material is guided into the grinding unit by the chute. After the material is finely ground, it enters the powder separator along with the direction of the internal air flow. Separation occurs under the dual action of blades and rotating cage wheels. The fine powder continues to rise and flows out from the air outlet of the powder classifier, and is collected by the powder classifier and bag dust collector. Coarse powder settles under the centrifugal force of the cage wheel and its own gravity, and enters the grinding unit through the ash hopper of the classifier f...

AI Technical Summary

Problems solved by technology

The main shaft of the traditional powder classifier is usually a solid main shaft. The defect of this design is: because the main shaft is an important force-bearing part, it is affected by the torque transmitted by the drive motor of the powder classifier through the reducer. In order to prevent the main shaft from torsion damage failure, The main shaft is generally made of high-quality alloy steel, and the shaft diameter is generally set larger so that the main shaft can obtain a larger torsional section coefficient, which will easily cause a large investment in high-quality steel and difficulties in processing and manufacturing.

The main shaft of the traditional powder classifier usually sets the main shaft and the cage wheel as a whole, which is not convenient for the transportation, installation and maintenance of the main shaft and the cage wheel.

The main shaft of the traditional powder classifier usually sets the upper and lower bearings of the main shaft on the upper end of the main shaft. During operation, the lower part of the main shaft and the cage wheel are prone to swing, which will adversely affect the upper and lower bearings and the entire powder classifier equipment.

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