Method for configuring and replacing pulverizer hammer

Abstract

The invention provides a method for configuring and replacing pulverizer hammers. The method comprises the following steps of sequencing and grouping hammers after being weighed according to the weight from small to large one by one, wherein each group comprises two hammers; finding the group that the sum of the two hammers is the maximum from the groups and putting the group at the middle row; arranging the other groups on the two sides according to the weight in sequence; compiling a hammer arrangement list; filling the hammer weights into the list according to the weights and calculating the total weight of each row of hammers; comparing that whether the total weight difference of rows in symmetry is not more than 0.3kg or not; subsequently detaching and installing the hammers according to three methods, namely, a single row detachment and single row replacing method, an overall detachment and symmetrical replacing method, and a snake-shaped detachment and replacing method. By utilizing the method, reasonable weight of the pulverizer hammers is ensured, vibration in operation and accidents that the hammers fall off to pound on a belt, and the like caused by the vibration, are reduced, the safe and smooth operation of the production is ensured, the pass percent in coal crushing fineness is increased, the hammer detaching and replacing time is shortened, the working efficiency is improved, and the electricity expense is saved.

Description

technical field [0001] The invention belongs to the field of mechanical equipment, and in particular relates to a configuration method and a replacement method for hammers of coal pulverizers. Background technique [0002] The coal crushing system of a coking plant adopts a reversible impact crusher with 42 hammers. The 42 hammers are arranged in 21 rows and 12 rows on the rotor, with 2 hammers in each row. In the past, there was no fixed and reasonable way to replace the hammer of the pulverizer, and the operator at the post could replace it at will, so there was a great potential safety hazard. If the hammers are replaced at will, the hammers on the rotor will be too heavy, and it will be difficult for an operator to fix the rotor (each hammer weighs more than 25 kg), which will easily cause safety accidents. Second, it is easy to cause the rotor to be heavy on a single hammer or the corresponding row of hammers, which will cause large vibration of the pulverizer and heav...

AI Technical Summary

Problems solved by technology

In the past, there was no fixed and reasonable way to replace the hammer of the pulverizer, and the operator at the post could replace it at will, so there was a great potential safety hazard

If the hammer is replaced at will, the hammer on the rotor will be heavy, and it will be difficult for the operator to fix the rotor (each hammer weighs more than 25 kg), which will easily cause safety accidents

Second, it is easy to cause the rotor to be heavy on a single hammer or the corresponding row of hammers, which will cause large vibration of the pulverizer and heavy motor load during operation, which is not safe, but also affects the stable operation of the equipment and the crushing effect. inefficiency

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