Since the end of eighteenth Century, the filter has been applied to industrial production in Europe for the first time, it has been widely used in many fields &emsp. With the development of industry and the progress of society, it is urgent to save energy, use resources and environmental protection in recent years. It also makes the application of the filter more important. According to a survey of 18 European countries, the growth rate and total output value of their filters and centrifuges were 42% and $52.83% billion, respectively, for the last ten years in the past 1980-1989 years. The areas where the demand for filters increases rapidly are: coal, alcohol, fermentation of sewers, extraction of protein, recycling and reuse of waste. However, most of the materials that need to be filtered are difficult to filter, and the amount of processing changes very much. Therefore, it is urgent to develop high performance filter equipment to adapt to this situation.