1. Application: environment protection type vacuum suction filter is a kind of environment protection and energy-saving machiery. It is mainly applied into the filteration of mud juice in sugar-production industry, also it can be used in solid-liquid separation for the suspension in other industries. It features in high filteration effiency, non-waste water Discharge, water- saving, low energy-consumption and high Automation and so on. It a new product to replace the old Belt vacuum filter with filter cloth, and the plate filter press. 2. Technical speification: No. Technical features SW28 SW-55 SW-80 (1)Drum filtering area() 28 55 80 (2)Drum Dia.*length φ3030*3000 φ3030*6000 φ3030*9000 (3)Drum rotary speed(r/min) 0.2-0.5 (4)main motor power(kw) 1.5 2.23 (5)mixing motor power(kw) 2.2(6)Weight(T) 9.8 1316 (7)Dimesion(mm) 4550*3530*3650 7550*3530*365010550*3530*3650 Technical specification (1) high vacuum pressure(MPa) -0.05--- -0.075(2) low vacuum pressure(Mpa) -0.03-- -0.05(3) suitable extraction(Mpa) 1200 24003600 (4) dry lime sludge pol (%) ≤ 5(5) Spraying water pressure(Mpa) 0.2-0.3(6) Spraying filter mud temperature() ≥ 903. Main features: Simple structure, easy maintenance, low cost for checking and repairing. The material of the touching materials is stainless steel, so it is durable in use, sanitary and good look. Continuous, automatic and easy operation, large capacity and high efficiency with few operators. The capacity of handling mud juice is twice more than the same specification of vacuum filter with cloth and it realizes energy and resource saving.