| Except those dangerous materials that are subject to explosion due to crushing and rubbing, most part of dry power materials can be directly granulated by this machine. If water-cooling is adopted for rollers by turning connectors, this machine can also be suited for granulation of heat sensitive materials.
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1 Vertical Feed Set After weight measured, powder material are sent laterally by the vibration hopper to the main feeder, deaerated by the stirring screw of the main feeder, pre-pressed and pushed into the arc grooves of left and right rollers. Driven by a pair of meshed gears, two rollers rotate in opposite direction with same speed, and powder materials are pressed into dense sheet while they run through rollers. Under the function of elastic recovery after rollers, they’ll be separated from rollers and drop down ,and fewer sheet not dropped will be scrapped off y the blade. Stripe grooves evenly distributed on the surface of rollers can prevent sliding when powder materials are fed into rollers. After crushed and granulated, they’ll pass through the vibration sieve to be graded, and granules which meet requirement can be obtained. Powder after the sieve will return to the vibration hopper to be granulated circularly.
2 Horizontal Feed Set Except feed style and installation style of rollers being something different with that of vertical feed set, the operation principle of them are completely identical. For horizontal feed set, powder materials from the vibration hopper are stirred and deaerated,then they’ll be sent into the arc grooves of upper and lower rollers by the screw of the metering feeder and be pre-pressed. Technological processes thereafter are same with that of vertical feed set. |
