From the perspective of the fermentation process, the large-wheel compost turner can be categorized into the following functional units:

(I) Turning and Aeration Unit: Composed of a large-diameter rotating wheel and rake teeth, this unit is responsible for mixing, breaking up, and turning the material. The high-strength teeth on the wheel are made of wear-resistant material; as the wheel rotates, they penetrate to the bottom of the compost pile, lifting deep-layer material upward while pushing surface material downward, thereby ensuring thorough mixing of the layers.

(II) Power Drive Unit: Includes the main motor, a speed reducer, and a chain drive mechanism. It drives the rotation of the wheel via an intermediate chain transmission system.

(III) Displacement and Travel Unit: Comprises longitudinal and transverse travel mechanisms responsible for positioning and moving the equipment within the fermentation tank. It is equipped with a variable-frequency drive (VFD) displacement carriage.

(IV) Hydraulic Adjustment Unit: Includes a hydraulic lifting system that enables the automatic raising and lowering of the large turning wheel.

(V) Intelligent Control Unit: Features a fully automated electrical control system to enable automated equipment operation.

Large wheel compost turners are located in the core fermentation stage of organic fertilizer production lines and are key equipment connecting upstream and downstream processes in organic fertilizer production. The complete production workflow is as follows: raw material pretreatment (proportioning and mixing) → aerobic fermentation (wheel-type turning) → crushing → granulation → drying → cooling → screening → packaging.

During the fermentation process, the large-wheel compost turner undertakes several key tasks: thoroughly mixing the proportioned raw materials and auxiliary materials; turning and tossing to ensure that the raw material granules come into full contact with the air, providing sufficient oxygen for aerobic microorganisms; turning and tossing to reduce the temperature of the pile, forming a virtuous cycle of high-temperature exchange; and transforming the viscous and dense raw material pile into a loose and elastic pile, forming a suitable porosity. The equipment operates by moving back and forth within the fermentation channel; as the material is repeatedly turned, it gradually advances from the feed end to the discharge end, enabling a continuous fermentation process.

 

 

Large wheel compost turners have certain requirements for the materials fed into the compost pile. Carbon-to-nitrogen (C/N) ratio adjustment: The C/N ratio of the raw materials must be adjusted during fertilizer production, necessitating the addition of a certain proportion of auxiliary materials. Moisture content control: The moisture content of the materials must be kept within an appropriate range; excessive moisture can make turning difficult and cause the material to stick to the equipment. Material particle size: Excessively large particles increase the load on the equipment, so pre-processing (such as crushing) is required. Once the primary raw materials and auxiliary materials have been piled together in the correct proportions, the compost turner can be used to mix and blend them thoroughly.

 

Large-scale wheeled compost turners demonstrate significant practical value. Regarding fermentation uniformity, the equipment substantially improves the consistency of pile turning. In terms of the fermentation cycle, the duration can be shortened compared to traditional equipment. Regarding sanitary safety, the pathogen inactivation rate meets high-standard requirements. In terms of automation, the equipment enables an automated, continuous workflow covering feeding, turning, fermentation, and discharge. Furthermore, it effectively prevents anaerobic fermentation of bottom-layer materials, thereby ensuring fermentation quality.