The windrow compost turning machine is a mature and widely used self-propelled piece of equipment for organic fertilizer windrow composting. Powered by a diesel engine and utilizing a crawler undercarriage combined with a transverse turning drum, it straddles the windrow to complete the turning process in a single pass. Its self-powered nature—requiring no external power supply—makes it particularly suitable for use in open fields far from power infrastructure and at temporary composting sites. In projects such as manure treatment at small-to-medium-sized livestock farms, township-level organic fertilizer processing, and centralized agricultural waste composting, the windrow compost turning machine has become the primary turning equipment for aerobic windrow fermentation processes, thanks to its site adaptability, high operational efficiency, and ease of operation and maintenance.

The double screws compost turning machine is a type of trough-style fermentation turning equipment that utilizes two parallel screw shafts as its core turning components. Unlike simple trough turners that rely on rotating toothed rollers, the twin-screw turner employs two shafts equipped with continuous helical blades to turn and advance the material. The two screw shafts rotate either in the same or opposite directions, scooping up material from the bottom of the trough along the helical surfaces, turning it over, and pushing it toward the discharge end—thereby accomplishing both turning and displacement in a single pass. The screw structure exerts stronger cutting and mixing forces on the material, effectively breaking up clumps and shredding long fibers, which results in greater fermentation uniformity. The equipment travels back and forth along rails mounted on the fermentation trough; the turning depth and travel speed are adjustable, making it suitable for processing organic materials with high moisture content that are prone to clumping. Characterized by high processing efficiency and stable operation, the double screws compost turning machine is a technologically mature and widely used model in trough-style aerobic fermentation processes.

The hydraulic compost turner is the core turning equipment for the aerobic fermentation stage in industrial fertilizer production lines. Designed for large-scale, continuous production, it replaces traditional mechanical direct-drive structures with a fully hydraulic transmission system, enabling flexible control over turning depth, travel speed, and load protection. The machine integrates with the production line’s master control system to synchronize with production pacing. While retaining the advantages of high space utilization and a stable decomposition environment inherent to channel-type fermentation, it significantly enhances automation and operational reliability, making it a preferred choice for upgrading modern fertilizer production lines.

The simple trough-type turner is a core piece of equipment in the aerobic fermentation process for organic fertilizer. It is responsible for periodically turning, aerating, and shifting the organic materials piled within the fermentation trough. Mounted on rails running along both sides of the trough, the machine travels back and forth; its high-speed rotating tined roller scoops material from the bottom, breaks it up, and throws it backward, causing the material to shift toward the rear as it resettles. A single unit can serve multiple parallel troughs, switching flexibly between them via a transfer carriage, thereby ensuring high equipment utilization. Featuring a compact structure, reliable drive system, and ease of operation and maintenance, this equipment is available in models ranging from capacities of a few tons to over a hundred tons per day. It is a practical choice for small-to-medium-scale composting projects seeking to control fermentation quality and shorten the maturation cycle.