2026/05/11
Double screws compost turning machines (track-mounted) are core equipment for large-scale aerobic fermentation. Their efficient and stable operation depends entirely on the precisely matched fermentation tanks. The construction of the fermentation tanks must strictly adhere to the principle of "determining the machine type first, then constructing according to the drawings," using the equipment parameters as the design blueprint. The core requirements are as follows:
I. Precise Matching of Core Dimensions
The width and depth of the fermentation tank must precisely correspond to the equipment's working capacity.
1. Tank Width: Determined by the "effective working width" of the turner's helix. The net width inside the tank should be slightly larger than the helix diameter, typically with a 5-10 cm gap on each side to form a scratch-resistant buffer zone, for a total gap of approximately 10-20 cm.
2. Tank Depth: Must be greater than the equipment's "maximum turning depth," with an additional allowance of at least 0.2-0.4 meters of extra height space to accommodate the loose material peaks formed during turning and prevent material overflow.
II. Track System Precision and Strength
1. Installation Precision: The I-beam rails on both sides of the trough top must ensure extremely high parallelism, levelness, and straightness. This is crucial for smooth equipment operation and preventing "rail wear" or jamming.
2. Structural Strength: The rails and concrete foundation must have sufficient load-bearing capacity to withstand long-term dynamic and static loads during full-load operation (self-weight + material load).
III. Trench Structure and Functional Reserves
1. Structural Strength: Primarily reinforced concrete structure. The tank walls must resist lateral material pressure, and the trough bottom must be able to withstand the load from loader compaction and the bottom ventilation system.
2. Functional Integration:
◦ Bottom Aeration: Ventilation ducts or aeration plates must be pre-embedded in the trough bottom to achieve forced oxygen supply.
◦ Drainage and Safety: The trough bottom should have a drainage slope of no less than 2% and drainage ditches. Sturdy anti-collision blocks must be installed at both ends of the trough, with sufficient safety reversing distance.
