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Labyrinth seal structure of powder concentrator

A technology of labyrinth seals and powder separators, which is applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve problems such as rough product fineness, product quality impact, and current fluctuations in powder separator motors, and achieve product fineness And the effect of reasonable particle size distribution, reducing the difficulty of production control and enhancing market competitiveness

Inactive Publication Date: 2012-04-25
SINOMA LIYANG HEAVY MACHINERY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The failure of the seal between the inner rotor and the shell of the powder classifier is one of the reasons for the fineness of the product to be coarse or coarse particles appear, which makes the fine powder mixed with coarse particles, and the fine powder sieve is too high, which has a great impact on product quality
Part of the coarse particles directly enter the finished product without being separated by the classifier, resulting in excessive sieving, and the speed of the classifier is forced to increase, resulting in over-grinding of the product, and the specific surface area remains high. When the classifier is running, the sealing ring There is relative movement with the rotor, so the motor current of the powder classifier will fluctuate

Method used

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  • Labyrinth seal structure of powder concentrator
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  • Labyrinth seal structure of powder concentrator

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Embodiment Construction

[0010] see figure 1 , 2 As shown, the upper sealing ring 1 is welded on the upper casing 2 of the powder concentrator, and the upper casing has a hole, and the elbow 3 is inserted into the rotor 6 and the stator from the hole at an angle of 30 degrees from the outside (sealed pipe, welded on the upper casing In the sealing gap 7 between the upper body 2) 4, the part of the elbow outside the upper shell is bent downwards in order to prevent the introduction of rainwater and other foreign substances. The lower sealing ring 5 is welded on the rotor 6 of the powder classifier. The guide vane is fixed on the upper casing 2. When the powder separator is working, the rotor drives the lower sealing ring to rotate, and the upper sealing ring and the elbow are fixed parts. The combination of upper and lower seals reduces the bypass from the powder selection area to the outlet pipe. The interior of the powder separator rotor is operated under negative pressure, but the elbow communic...

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Abstract

The technology provides a labyrinth seal structure of a powder concentrator, which is better in sealing effect. A vent pipe is arranged on an upper housing of the powder concentrator; and one end of the vent pipe is communicated with the outside of the upper housing, and the other end of the vent pipe is communicated with a sealing clearance between a rotor and a stator of the powder concentrator.

Description

technical field [0001] The technology relates to a labyrinth sealing structure of a vertical mill powder separator used in grinding system equipment in cement, metallurgy, coal, electric power and other industries. Background technique [0002] The failure of the seal between the inner rotor and the shell of the powder classifier is one of the reasons for the fineness of the product to be coarse or coarse particles appear, which makes the fine powder mixed with coarse particles, and the fine powder sieve is too high, which has a great impact on product quality . Part of the coarse particles directly enter the finished product without being separated by the classifier, resulting in excessive sieving, and the speed of the classifier is forced to increase, resulting in over-grinding of the product, and the specific surface area remains high. When the classifier is running, the sealing ring There is relative movement with the rotor, so the motor current of the powder concentrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B11/00B07B7/083F16J15/447
Inventor 吴春晖余文陈松
Owner SINOMA LIYANG HEAVY MACHINERY
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