Jet mill completes ultrafine grinding and classification at the same time
The jet mill is a mill that integrates the dual functions of grinding and jet classification. It is developed to meet the market’s demand for high-end mills. The jet mill is equipped with a sorting chamber to sort the particles in the high-speed swirling flow. The fine powder that has lost the centrifugal force is introduced into the collection system to become a finished product, and the coarse particles sink to the grinding cavity along the outside of the swirling flow under the action of centrifugal force, making it Was ground again. The material of the mobile jet mill is conveyed from the check valve to the storage hopper, and sent to the grinding chamber through the screw feeder. The supersonic air enters the grinding chamber through several spray nozzles, and is sprayed to the center to fluidize the material and be ground. The material is crushed under extremely strong impact. This machine is a vertical-shaft reflective pulverizer, which can complete the two processing steps of micro-grinding and particle sorting at the same time. It is suitable for processing a variety of materials in various industries. The particle size can be adjusted arbitrarily without stopping the machine.
The jet mill is mainly composed of frame, upper box, middle box, lower box, feeding device, grading motor, main motor, rotor assembly and other components. The rotation of the rotor is obtained by the main motor driving the main shaft through the V-belt. The rotation of the grading wheel is achieved by the grading variable frequency motor driving the grading shaft through the coupling. The rotation of the classifier is opposite to that of the grinding disc. The elasticity of the V-belt is adjusted by the tightening bolts to adjust the center distance between the motor and the host, so that the V-belt is moderately tight. The rotor is mainly composed of a main shaft, a bearing seat, a bearing, a rotor, a grinding block, and a V-belt wheel. After the rotor is installed with grinding blocks, the dynamic balance is checked. The rotating speed of the grading impeller can be adjusted freely without stopping the machine, so that the graded product can reach the ideal fineness. The feeding device is mainly composed of hopper, auger, frequency conversion motor, reduction box and other parts. The amount of feed can be obtained by adjusting the speed of the frequency conversion motor, so that the load of the main motor is basically within the rated load range.
Since the rotor assembly and the grading impeller can be assembled after passing the dynamic balance verification, the vibration generated during operation is very small. The whole machine does not need foundation and foundation bolts to install. The rack only needs to be placed on a horizontal ground or supported by shock-proof pads. The position of the electric control cabinet and the host should not be too far away (except in special circumstances, such as grinding conductive materials, etc.). In this way, the load of the main motor can be observed, and the power supply can be cut off in time in case of danger.
The jet mill is used for ultrafine grinding in chemical, food, feed, medicine and intermediates, tobacco, pesticides (wettable powders), pigments, coatings, dyes, ceramics, pigments, colloids, non-metallic minerals and bioengineering industries (Such as calcium carbonate, magnesium oxide, aluminum hydroxide, cerium oxide, phenolic resin, α-starch, pentasodium, mica, etc.).