Wine lees separator

The lees separator is a device specially used to process the lees produced in the winemaking process to achieve effective solid-liquid separation and resource recovery. The lees contain a large amount of residual starch, protein, cellulose, yeast, minerals and other components. Through the treatment of the lees separator, these substances can be extracted separately for feed production, fertilizer manufacturing, bioenergy conversion and other purposes, thereby improving resource utilization and reducing environmental pollution. The following is a detailed introduction to the main types, working principles, characteristics and applications of lees separators: 1. Working principle of spiral extrusion lees separator: - After the lees enter the screw extruder, the lees are pushed forward by the rotation of the screw shaft, and at the same time, they are subjected to continuous axial pressure and radial shear force in the extrusion cavity formed by the screw shaft and the screen. - The liquid (mainly water and alcohol) in the lees flows out through the pores of the screen under pressure, while the solids (including residual starch, cellulose, yeast, etc.) are squeezed into cakes and discharged. Features: - Simple structure, easy operation and maintenance, continuous operation, and large processing capacity. - The parameters such as the screw shaft speed and the screen aperture can be adjusted according to the characteristics of the lees to obtain an ideal solid-liquid separation effect. - The moisture content of the solids in the squeezed lees is low, which is convenient for subsequent drying or fermentation. 2. Working principle of centrifugal lees separator: - The lees are subjected to the centrifugal force generated by high-speed rotation in the centrifuge, and the solid and liquid phases are separated due to the density difference. - The liquid (mainly water and alcohol) is thrown to the drum wall under the action of centrifugal force and discharged through the pores of the screen; the solids (including residual starch, cellulose, yeast, etc.) are deposited on the inner wall of the drum and are manually or automatically unloaded after shutdown. Features: - High separation efficiency and fast processing speed, suitable for large-scale lees processing. - It can adapt to the viscosity, solid content and other characteristics of different lees, and achieve good separation by adjusting parameters such as speed and time. - The solid-liquid separation effect under the action of centrifugal force is better, the separated liquid is clear, and the solid dryness is high. 3. Working principle of belt filter press lees separator: - The lees are evenly distributed on the filter belt through the feeding device. As the filter belt moves, the lees are dehydrated under the action of gravity and filter belt squeezing. - The filter belt goes through three stages of pre-pressure, low pressure and high pressure, gradually increasing the squeezing force on the lees, causing the liquid (mainly water and alcohol) to be discharged through the filter cloth, while the solids (including residual starch, cellulose, yeast, etc.) remain on the filter belt to form a filter cake, which is finally scraped off by the scraper. Features: - Good dehydration effect, the separated lees solids have low moisture content and can be directly used for feed or fertilizer production. - Adjustable filtration pressure, strong adaptability, and can handle different types of lees. - Compact structure, small footprint, high degree of automation, and easy operation. 4. Vibrating screen lees separator** Working principle: - The lees are subjected to high-frequency vibration on the vibrating screen surface, and the solid and liquid phases are separated due to the difference in particle size and specific gravity. - The liquid (mainly water and alcohol) flows out through the sieve holes, and the solids (including residual starch, cellulose, yeast, etc.) remain on the screen surface, and continuous discharge is achieved by adjusting the inclination angle and vibration frequency. Features: - Suitable for handling lees with finer solid particles and higher moisture content, with good separation effect. - Adjustable vibration frequency and amplitude to adapt to different wine lees characteristics and processing requirements. - Simple structure, stable operation and low maintenance cost. Application Sewage separators are widely used in the wine lees processing of various wine brewing companies such as liquor, beer, wine, and fruit wine, helping companies to realize the resource utilization of wine lees, improve economic benefits, and reduce environmental pollution. The separated wine lees solids can be further processed into products such as feed, fertilizer, and biomass fuel, while the liquid part can be used to recover alcohol, treat sewage, or use as agricultural irrigation water. When choosing a wine lees separator, the company should consider its own wine lees production, type, processing requirements, and economic conditions, and comprehensively consider factors such as the equipment's processing capacity, separation effect, operating cost, and maintenance convenience to select the most suitable separation equipment.