Factors Affecting the Turning Performance of Chain-Plate Compost Turners

The chain compost turning machine serves as the core equipment in organic fertilizer fermentation production lines. The uniformity of turning, oxygen supply efficiency, and the rate of material maturation are influenced by a multitude of factors—including equipment configuration, material characteristics, operational management, and the fermentation environment—all of which directly determine the quality of the fermentation process and the pace of production.

First and foremost are the structure and configuration of the equipment itself. The rotation speed of the chain plates, the density of the rake-tooth arrangement, and the designed turning depth are of critical importance. If the rake teeth are worn, deformed, or spaced improperly, the result will be incomplete turning and the accumulation of unturned material. If the machine’s travel speed is too fast, the material will not be sufficiently broken up; conversely, if the speed is too slow, material is prone to piling up and backing up. Furthermore, if the machine’s vertical adjustment range is insufficient to accommodate varying pile heights, shallow-depth turning will occur, leading to oxygen deprivation in the bottom layers of the material and thereby hindering the fermentation process.

Secondly, the inherent characteristics of the materials themselves play a significant role. If the raw material moisture content is excessively high, the material tends to clump together, making it difficult to break up and aerate, which subsequently impairs ventilation and air permeability. Conversely, if the moisture content is too low, the material lacks sufficient looseness, resulting in a slower rise in temperature during fermentation. An improper ratio of straw or fibrous additives in the material mix—or the presence of manure that is excessively fine, dense, or viscous—will increase turning resistance and lead to uneven mixing. Additionally, if the material pile exceeds the equipment’s rated turning depth, the deep-seat