Extruder is a device that converts mechanical energy into thermal energy and is used to process extruded food or extruded feed.  Working principleThe machine generates heat through rotation, so that the food or material is cooked and the volume increases during the extrusion process.Application fields1. Food field: It can process raw materials such as rice, corn, soybeans, wheat, etc. to make various extruded foods, such as popcorn, Kang Le Guo, etc.2. Feed field: It is used to produce livestock and poultry feed, aquatic feed and pet feed, improve the digestibility and utilization rate of feed, and increase palatability.3. Industrial field: It can be used for the pretreatment of certain raw materials, such as the extrusion pretreatment of raw materials in the production of vegetable oils and drinking wine.Classification1. According to the screw structure: there are single-screw extruders and twin-screw extruders. The single-screw structure is simple, and the twin-screw can expand viscous materials with stable discharge.2. According to the conditioning method: It can be divided into wet extruders and dry extruders. Steam is added during the conditioning of wet extruders, but no steam is added during the conditioning of dry extruders.Main componentsIncludes extruder screw, extruder discharge die, bearing box, oil filtration and cooling system, etc.

I. OverviewAnnular Leachers are efficient solid-liquid extraction equipment widely used for vegetable oilseed leaching.II. Working PrincipleMaterial Handling & Spraying: Material is fed by scraper conveyor and sprayed counter-currently with miscella from concentrated to dilute.Leaching & Draining: Fresh solvent is sprayed last. Drained wet meal is discharged to desolventizer; miscella goes to evaporation.Solvent Recovery: Filtered miscella is pumped to a holding tank; dilute miscella recirculates.III. Technical FeaturesAnnular Design: Material turnover ensures thorough leaching and low residual oil.Shallow Material Bed & V-Shaped Grids: Dead-zone-free movement and self-cleaning grids ensure efficient drainage, reducing solvent in wet meal.Unique Sealing: Prevents solvent leakage from main shaft, enhancing safety.Uniform Feeding/Discharge: Ensures stable system pressure.IV. ApplicationsSuitable for leaching rice bran (high powder content), soybeans, rapeseed, etc.V. Equipment SelectionCapacity: 50-5000 TPDSolvent Consumption: ≤0.6 kg/ton material, Recovery >99.5%Steam Consumption: ≤280 kg/ton material (0.8MPa)VI. AdvantagesHigh leaching efficiency, especially for powdered materials (e.g., rice bran, palm meal)Energy-saving (low solvent/steam consumption)Stable operation with low maintenanceSafe and reliable (no solvent leakage)Annular Leachers are efficient, energy-saving, and safe, making them mainstream in oil processing.