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The influence of the gap between scraper rotor and coal centrifuge basket

The gap between the centrifuge basket and the scraper rotor has a great influence on the work of the centrifuge.

The smaller the gap, the less coal stays on the sieve surface, the lighter the load on the centrifuge, and the smaller the phenomenon of the screen gap being blocked.
In this way, it is conducive to dehydration, and at the same time, it reduces friction resistance and reduces the wear of the centrifuge basket by coal flow.

If the gap is too large, a layer of coal will adhere to the screen surface,the dehydrated coal flow can only slide along the coal seam.
This increases the resistance to movement. Under the same treatment capacity, the load of centrifuge increases, the power consumption is large, and the phenomenon of coal particle crushing is serious.
Because the coal seam is adhered to the screen surface, the resistance of water flow through is also great, which not only affects the dewatering effect, but also increases the abrasion speed of scraper and centrifuge basket, according to the design requirements, the fit clearance between scraper and screen basket shall be 2 ± 1mm.

If the clearance is increased due to wear, adjust it. Increase the gasket on the spindle flange to raise or lower the scraper rotor.

Based on the above analysis, it can be concluded that the technical parameters of the centrifuge basket are selected according to the requirements of the separation process and the principle of economy.

Reduce the handling capacity of the centrifuge as much as possible, and avoid reducing the service life of the centrifuge basket when the centrifuge is always in the process of full load production。

In addition, the clearance between the screen basket and the scraper shall be detected in time.

Ensure that the clearance between the centrifuge basket and scraper is within the designed clearance (3mm), which can effectively guarantee the service life of the centrifuge basket.

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