Vibrating screening equipment in the traditional sense relies on a certain frequency of motor vibration to allow granular objects to pass through the screen to achieve material classification. Since it is an open screening, the material screening process is very dusty. , the material screening process invisibly causes waste and loss, and leads to great pollution of the natural environment and working environment. At the same time, vibrating screening has great requirements on materials, such as specific gravity, viscosity, and chemical properties, which results in many materials with small specific gravity being unable to pass through the screen, and many materials with high mesh number screening requirements cannot be screened. Since 1984, Professor Liang Xuezeng has focused on developing screening equipment that can achieve rapid, environmentally friendly and accurate screening of materials. After 8 years of technical research, combined with aerodynamic theory and mechanical engineering theory, he developed China's first screening equipment. Air flow sieving machine - HLQS-100, and applied for the first national patent for air flow sifting machine in 1992, filling the gap in China's lack of screening equipment for medium and high mesh materials, and currently has air flow sifting machines. 3 national invention patents and multiple national utility model patents. At present, the most advanced core technology of the fourth generation air flow sieving machine has successfully obtained a national invention patent.
Since entering the 21st century, after nearly 10 years of continuous improvement and improvement, it has become increasingly perfect and has formed a series of products that can adapt to the screening requirements of various difficult-to-screen materials of different fineness and different output. The objective effects of energy saving, high efficiency and environmental protection have been achieved. After nearly 30 years of development and 4 generations of technological research and innovation, air flow sifting machines have become increasingly mature and are widely used in dozens of industries such as chemical industry, food, building materials, and coatings.