Vacuum filter is currently the most widely used filter machine. It is widely used in industrial production such as chemical industry, environmental protection, and food, and has great effect on society. Vacuum filters can be divided into many types according to different technologies and working methods, and each type of filter has its unique workflow:

External filter surface rotary drum vacuum filter: It can operate continuously and automatically, can effectively carry out filtration, washing, dehydration, the operation site is clean, 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 volatile liquid, the materials with low boiling point or volatile at the operating temperature cannot be filtered, and it is difficult to process the slurry with high solid content and large change in particle characteristics, and filter cake The moisture content is about 30%, rarely less than 10%, mainly used in the chemical and food industries.

Internal filter surface rotary drum vacuum filter: suitable for filtering the suspension of solid particles with uneven thickness. It does not require a stirring device. The machine has low cost and can adapt to changes in feed concentration. If it needs to operate at high temperatures, it is easy to take heat preservation measures . The disadvantage is that the surface of the drum cannot be fully utilized, and the filter cake needs a certain degree of viscosity, otherwise it is easy to fall off, causing the vacuum to drop and the feed flow rate to change; it is difficult to replace the filter cloth.

Disc vacuum filter: The lowest price is calculated based on the unit filtering surface, and the floor space is small, but the humidity of the filter cake is higher than that of the rotary drum vacuum filter. Because the filter surface is vertical, the filter cake has uneven thickness, is easy to crack, and is not easy to wash. It is difficult to unload the thin filter cake, 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 processing non-sticky materials. The application range is the same as that of rotary drum vacuum filters.

Rotary table vacuum filter: simple structure, good washing effect, washing liquid and filtrate are separated, for fast dehydration slurry, a single filter has a large processing capacity, the disadvantage is that it covers a large area, the filter cloth wears quickly, and is easy to block .

Tipping bucket vacuum filter: it can filter viscous materials and has strong adaptability. It is suitable for separating slurry with solid content greater than 20%, high density, easy to separate and filter cake to be fully washed. It is often used in chemical industry. Light industry and other industries.

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