Double Screws Compost Turning Machine

Double Screws Compost Turning Machine

The double screws turner is a high-efficiency aerobic fermentation machine featuring a core design based on synchronized, counter-rotating twin screws. Building upon the foundation of traditional trough-style turners, this equipment incorporates synchronized counter-rotation technology to integrate turning, crushing, mixing, aeration, and material displacement into a single, streamlined operation. Its core competitive advantage lies in “synergistic twin-shaft turning”: the machine is equipped with two symmetrical, parallel shafts fitted with staggered, wear-resistant turning blades; during operation, these shafts rotate synchronously in opposite directions, generating powerful, bidirectional turning forces.
Compared to hydraulic trough-style turners, the double screws turner emphasizes synergistic twin-shaft action, eliminating the need for complex hydraulic systems and resulting in easier maintenance and more controllable costs. Compared to basic trough-style turners, it offers superior power and higher processing capacity, making it well-suited for large-scale, continuous production requirements. For medium-to-large fertilizer plants seeking short fermentation cycles, high maturity levels, and high throughput, investing in a high-performance double screws turner is an ideal choice for establishing a standardized organic fertilizer production line.

System Composition and Technical Architecture

The technical architecture of the double screws windrow turner can be categorized into the following layers:
(I) Mechanical Execution Layer: Composed of two parallel, symmetrically arranged screw-type turning shafts equipped with staggered, wear-resistant turning blades. The screw shafts feature a variable-pitch design and rotate in opposite directions at the same speed.
(II) Power Transmission Layer: Composed of a motor, a gearbox, and a chain or gear transmission mechanism; equipped with overload protection and variable-frequency speed control devices.
(III) Travel and Positioning Layer: Composed of the main travel beam, left and right travel mechanisms, and travel wheels.
(IV) Lifting and Adjustment Layer: Composed of hydraulic cylinders and mounting frames.
(V) Intelligent Control Layer: Composed of a PLC control cabinet.

Industry Applications and Process Compatibility

The double screws windrow turner is suitable for large-scale aerobic composting processes.
Organic fertilizer industry: Processing organic waste such as livestock and poultry manure.
Environmental protection industry: Aerobic composting of municipal sludge.
Agricultural industry: Processing agricultural waste such as crop stalks.
Industrial sector: Processing industrial organic waste such as sugar mill filter mud and distillery grains.

Material Adaptability Analysis

The double screws windrow turner demonstrates exceptional adaptability to various materials. High-moisture materials: capable of processing materials with high water content. High-viscosity materials: the powerful turning action of the twin screws prevents machine jamming. Large, clumped materials: easily breaks down high-moisture, agglomerated material. Fibrous materials: the spiral blades powerfully cut through long fibers.

Key Selection Criteria and Procurement Recommendations

When selecting a double screws compost turner, the following key points should be considered: First, check the width of the fermentation tank: Select the corresponding model according to the tank width (3m, 4m, 6m). Select the SHFP-3000 (standard) for a 3m width, the SHFP-4000 (upgraded) for a 4m width, and the SHFP-6000 (large-scale) for a 6m width.
2. Processing scale: Determine equipment specifications based on daily processing volume. Choose small models for family farms and small organic fertilizer plants; medium models for large-scale livestock farms and medium-sized organic fertilizer plants; and large, customizable models for large livestock complexes and municipal solid waste treatment projects. Allow for a 10%–20% capacity margin.
3. Material characteristics: For high-moisture, sticky materials, prioritize models equipped with a crushing function and anti-tangling screw blades.
4. Screw blade material: Prioritize wear-resistant high-manganese steel. Pay attention to the blade material and the warranty terms.
5. After-sales service: Select a manufacturer that offers comprehensive after-sales support.

Models and Specifications of Twin-Screw Windrow Turners