Vacuum filter is the most widely used filtration machine. It is widely used in industrial production such as chemical industry, environmental protection and food. It has great effect on society. Vacuum filters can be divided into many different types depending on the technology and working method, and each filter has its own unique workflow:

    External filter surface drum vacuum filter: continuous and automatic operation, can effectively filter, wash, dehydrate, clean the operation site, easy to check and repair. The disadvantage is that the cost is high, the use range is limited by the vapor pressure of the hot liquid or the volatile liquid, the material having a low boiling point or being volatile at the operating temperature cannot be filtered, and it is difficult to treat the slurry having a large solid content and a large change in particle characteristics, and the filter cake The moisture content is about 30%, rarely less than 10%, and is mainly used in the chemical and food industries.

    Inner filter surface drum vacuum filter: It is suitable for filtering suspensions with uneven thickness of solid particles. It does not need a stirring device. The machine cost is low, and it can adapt to the change of feed concentration. If it needs to operate at high temperature, it is easy to take insulation measures. . The disadvantage is that the surface of the drum cannot be fully utilized, and the filter cake needs a certain viscosity, otherwise it is easy to fall off, causing the vacuum to decrease and the feed flow rate to change; it is difficult to replace the filter cloth.

    Disc vacuum filter: The lowest filtration price per unit of filtration surface, the floor space is small, but the filter cake humidity is higher than the drum vacuum filter. Since the filter surface is vertical, the filter cake is uneven in thickness, easy to crack, difficult to wash, and the thin layer filter cake is difficult to discharge, the filter cloth wears quickly, and is easy to block. It is easy to handle materials with low sedimentation speed and easy to filter. It is not suitable for non-stick materials. The application range is the same as that of drum vacuum filter.

    Turntable vacuum filter: simple structure, good washing effect, washing liquid and filtrate are separated. For the fast dewatering slurry, the single filter has a large processing capacity. The disadvantage is that the floor space is large, the filter cloth wears quickly, and it is easy to block. .

    Dumping vacuum filter: It can filter viscous materials and has strong adaptability. It is suitable for separating slurry with mass fraction greater than 20%, high density, easy separation and filter cake to be fully washed. It is often used in chemical industry. Light industry and other industries.

    Belt vacuum filter: divided into fixed chamber type, moving chamber type, three kinds of filter belt intermittent movement, belt type vacuum filter is horizontal filtering surface, feeding above, high filtration efficiency, good washing effect, adjustable thickness of filter cake, The filter cloth can be washed on both sides of the filter at the same time. It is flexible in operation and low in maintenance cost. It can be used in the chemical, pharmaceutical and food industries. It has excellent separation performance for the slurry with faster sedimentation speed, and is better when the filter cake needs to be washed.