Anti-blocking device for double-in and double-out ball type coal pulverizer separator

Abstract

The invention discloses an anti-blocking device for a double-in and double-out ball type coal pulverizer separator. The anti-blocking device for the double-in and double-out ball type coal pulverizer separator comprises an outer conical barrel, an inner conical barrel and separator inlet radial baffles which are arranged on the inner conical barrel, wherein the end side surfaces of the separator inlet radial baffles and the outer edge of the upper end face of the inner conical barrel are positioned at the same height. According to the device, the end side surfaces of the separator inlet radial baffles and the outer edge of the upper end face of the inner conical barrel are positioned at the same height, so that the upper end face of the inner conical barrel is effectively prevented from supporting impurities which are attached to the separator inlet radial baffles, and the impurities can smoothly fall off under the action of gravity and airflow; and furthermore, a plurality of axial separation baffles are also uniformly arranged between the walls of the outer conical barrel and the inner conical barrel for preliminarily separating the rising pulverized coal air flow, the number of the separator inlet radial baffles are reduced, the distances between the separator inlet radial baffles are increased, the lengths of the separator inlet radial baffle are increased, furthermore, the double-out ball type coal pulverizer separator is prevented from being blocked, and the pulverized coal fineness and uniformity are ensured.

Description

technical field [0001] The invention relates to an anti-blocking device, in particular to an anti-blocking device for a double-inlet and double-outlet coal pulverizer separator. Background technique [0002] At present, the double-inlet and double-outlet coal mill is widely used in coal-fired power plants due to its high equipment availability, convenient maintenance, and strong adaptability to coal types. In addition, it has the advantages of both steel ball mills and medium-speed coal mills. in the boiler. [0003] Such as figure 1 As shown, the original separator of the double-inlet and double-outlet coal mill is a radial separator. The pulverized coal airflow is from the riser 1 through the annular passage between the inner cone 2 and the outer cone 3 to the upper part of the separator, and the airflow is 90° After turning, the radial baffle plate 4 set on the inlet of the inner cone 2 enters the inner cone 2 at a certain angle, and the airflow rotates along the wall o...

AI Technical Summary

Problems solved by technology

The above-mentioned transformation plan is expensive, heavy maintenance workload, and long maintenance cycle, which does not fully meet the needs of on-site transformation

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