Laboratory sealed sample pulverizer / lab sample grinder / lab sample grinding mill is a small lab grinding machine for grinding the ore/material samples into powder, which has been widely used in the laboratory of the geology, mining, metallurgy, coal, power, chemistry and building industries, for the none pollution sample testing.The sealed pulveriser gets an "automatic dust proof" and a "pot anti-loose" device, which provide the machine advantages of low noise, no dust, and easy operation.The machine adapt high frequency vibrating grinding method to make the power fine and event, no need screening and shrinking, prevent sample mixing.This machine gets a simple structure, nice outlook , small volume, with a high efficiency, the output material is fine and evenly, which could meet the demand of education and research department. no need install and adjusting. Could be used in any location, it's one of the best sampling machines for laboratory use.Working principle is vibration milling type, materials feed into the pot, high speed spinning crushingring and hammer will grind the material ready within 1-5 minutes.The input materials should be brittle, and dry, out put size is between 80-200 mesh, if require even finer size, the machine can be designed according special requirement. 一、Overview This machine is an indispensable smashing sample preparation equipment for the production and research of geological, mining, metallurgy, coal, grain, medicinal materials and other industries. This machine adopts Y90L-6 motor to drive the eccentric tamper, so that the hitting block, the hitting ring and the material box collide with each other, and the smashing task is completed by round-squeezing and flat grinding. 二、Main parameters