2026/06/29
Among fermentation compost turning machine, the double screws compost turning mahcine is a preferred choice for handling high-moisture, high-viscosity materials such as municipal sludge, biogas residue, and fresh chicken manure. Compared to wheel-type or single-screw turners, it offers superior stability when processing materials that are viscous, prone to clumping, and have high water content.
Its core advantage lies in its counter-rotating dual-shaft structure; the two screws rotate in opposite directions, allowing them to powerfully shear and tear apart clumping, sludge-like materials. This action thoroughly breaks up lumps and prevents the material from forming a sticky, compacted mass. Additionally, the equipment features a turning depth of 2–3 meters, enabling it to lift water accumulated at the bottom of the fermentation channel and anaerobic, damp material to the surface for full aeration and rapid drying. This effectively resolves issues such as foul odors and incomplete fermentation in the bottom layers of high-moisture material piles. The counter-rotating action facilitates material self-shedding, minimizing the risk of material sticking to the shafts or causing blockages. Coupled with a high-torque drive system, the machine operates reliably under heavy loads without slipping or idling, making it suitable for the continuous processing of high-density, high-viscosity materials; it also distributes material laterally to balance moisture levels and fermentation temperatures within the channel.
However, the equipment does have certain limitations regarding material compatibility: highly moist and corrosive materials accelerate blade wear and seal degradation, thereby increasing maintenance costs. Long fibers or debris mixed in the material can easily wrap around the screws, causing jams or shutdowns. Furthermore, the high resistance posed by viscous materials results in higher electricity consumption during operation.
In practical applications, these challenges can be mitigated by pairing the turner with upstream crushing and screening equipment to remove debris and by applying wear-resistant, anti-corrosion treatments to the screws. With these measures, the system can reliably handle the large-scale fermentation of high-moisture, high-viscosity materials, making it the preferred choice for medium-to-large sludge and manure treatment projects.
