In organic fertilizer production lines, the fermentation stage is a crucial process for converting raw materials such as livestock and poultry manure and straw into well-rotted organic fertilizer. It requires the coordinated operation of multiple pieces of equipment, with the compost turner as the core, complemented by auxiliary equipment to ensure fermentation efficiency and quality.
The compost turner is the "main force" in the fermentation stage, bearing the heavy responsibility of regulating the pile environment. Its core functions are threefold: first, breaking up material compaction and delivering oxygen to the deeper layers of the pile to prevent localized anaerobic conditions and unpleasant odors; second, equalizing the pile temperature by distributing heat evenly through turning, quickly raising the temperature to 55-70℃ to kill pathogens and weed seeds; and third, shortening the fermentation cycle from over 30 days in traditional open-air fermentation to 15-20 days. Mainstream compost turners fall into three categories: trough-type turners are suitable for large production lines, operating on tracks and processing 50-100 cubic meters of material per hour, with automatic control; windrow compost turners offer high flexibility, without track limitations, processing 30-60 cubic meters per hour, suitable for small to medium-sized factories; large wheel compost turners boast outstanding processing capacity, reaching 60-150 cubic meters per hour, balancing efficiency and durability, making them the preferred choice for medium to large-sized factories.
Besides the compost turner, material conveying equipment is indispensable. Belt conveyors or scraper conveyors enable continuous transfer of raw materials and fermentation semi-finished products, avoiding the time-consuming and labor-intensive manual handling, and can precisely control the material conveying volume, matching the operating rhythm of the compost turner to ensure the continuous operation of the production line.
Temperature control and monitoring equipment is also crucial. Distributed temperature sensors can collect temperature data at different depths of the compost pile in real time. After the data is transmitted to the control system, it can automatically adjust the turning frequency and ventilation volume of the compost turner. When the pile temperature is too high, the frequency of turning and tossing is increased to lower the temperature; when the temperature is too low, the turning interval is reduced to ensure that fermentation remains within a suitable temperature range and improves the composting effect.
These devices work together to form a complete fermentation operation system, solving the problems of low efficiency and unstable quality in traditional fermentation. This provides strong support for the standardization and large-scale production of organic fertilizer and is an important guarantee for promoting the green and circular development of agriculture.
