设计了一种采用音波振动方法对颗粒状物质进行筛分的全自动筛分仪。仪器采用微电脑控制筛分的全过程，实现了全自动化，并可外接计算机，获得样品最终粒度分析结果。该仪器广泛适用于石油、地质、水利、海洋、化工、冶金、建材、磨料、医药、轻工、能源等多种领域粉体的粒度分析。 An automatic sieve sieve was designed to sieve the granular material by the method of sonic vibration. Microcomputer control equipment used in the whole process of screening, to achieve a fully automated, and can be connected to the computer to obtain the final particle size analysis results of the sample. The instrument is widely used in petroleum, geology, water conservancy, marine, chemical, metallurgy, building materials, abrasives, pharmaceuticals, light industry, energy and other fields of particle size analysis.