Balanced material distribution control method for chain grate machine

Abstract

The invention discloses a balanced material distribution control method for a chain grate machine, and belongs to the technical field of chain grate machine-rotary kiln pellet production. The method comprises the following steps: step 1, setting initial movement rates of a swinging head and a wide belt, and measuring the thickness of a material layer during operation; step 2, measuring the running time of the swinging head of the chain grate machine on the wide belt according to the set motion Hertz number, and taking the running time as initial time; step 3, partitioning the motion paths of a turntable and the swinging head, wherein the motion Hertz numbers of the swinging head in each partition are different; and 4, adjusting the Hertz number of the chain grate machine according to the speed of the chain grate machine and the green pellet amount. Segmented time-delay frequency conversion control is performed on the chain grate machine, and the time distribution required by the swing head to run from the zero point position to the other side of the wide belt is measured, so that segmented time-delay frequency conversion control is realized, the swing speed is increased in a thick material area, the swing head speed is reduced in a thin material area, and uniform material distribution of the chain grate machine is realized.

Description

technical field [0001] The invention relates to the technical field of grate machine-rotary kiln pellet production, and more specifically, relates to a method for controlling the balanced material distribution of a chain grate machine. Background technique [0002] In the production process of grate machine-rotary kiln pellets, high-temperature gas passes through the grate bed moved by the grate machine to dry and preheat the pellets on the grate bed, and heat and mass transfer will occur between the pellets and the gas. and physicochemical reactions. Among them, the distribution of the grate machine is a crucial link, and the deviation of the distribution directly affects the quality of the finished balls, the ring forming cycle of the rotary kiln, and the energy consumption level. Generally, the material thickness difference of the grate machine should be less than 30mm. If the material distribution deviation exceeds the requirement, it will directly cause uneven drying, ...

AI Technical Summary

Problems solved by technology

[0005] In view of the fact that the uneven distribution of the existing chain grate will cause a series of problems, the present invention provides a method for controlling the balanced distribution of the chain grate. Increase the thickness of the material layer, improve the drying and preheating effect of the pellets on the grate, achieve the purpose of prolonging the ring formation cycle of the rotary kiln, improving the quality stability of the pellets, and reducing the energy consumption of the grate-rotary kiln process, etc.

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