• 17 Oct, 2022
• By EPIC Powder
• 2 Comments

How to adjust the fineness of finished products when processing medicinal materials with a small air flow pulverizer? Umico Powder Machinery

As a new small air jet mill, it is very popular at present and has been widely used in various industries. Small air jet mill is also very good at crushing traditional Chinese medicine, which can be said to be handy, because it can process traditional Chinese medicine from a larger size to a fineness of 200-3000 mesh, greatly improving the effect of some precious and rare medicinal materials, making it easier for the human body to absorb. How to adjust the fineness of the small air jet mill when processing medicinal materials? Now let's take a look

The fineness adjustment method of small air flow mill. Under the normal working condition of small air flow mill, the factors affecting the fineness include the air volume, the rotating speed of the grading wheel, the feeding amount and the wear degree of vulnerable parts. When the fineness is too coarse: if the weight is the maximum, reduce the feeding rate first, and then increase the frequency of the grading wheel; If the requirements are not met, turn down the air volume (butterfly valve on the high-pressure air duct). After repeated adjustment, the small air flow pulverizer can find and meet the fineness requirements, which is also the control point of the best output. When the fineness is too fine: firstly, increase the air volume. If the air volume is the maximum, reduce the frequency of the grading wheel. After the current decreases, increase the feeding volume. After repeated adjustment, finding and reaching the fineness requirement is the control point of the best output< Br/>Check the small air flow crusher before starting up. When the newly installed equipment is in place and connected with the warehouse, it is inevitable that there will be iron blocks, welding heads, welding slag and other foreign matters left. Without turning on the fan and main motor, open the impurity removal plate below the feed inlet to let the impurities and materials for cleaning the warehouse discharge from below. After finishing, open the ultra-fine powder observation door to check whether there are impurities in the crushing disk and whether the clearance between the grading wheel and the upper end is 0. About 5mm. After the commissioning of small air flow pulverizer is normal, power on and start the equipment. Set the parameters of the two frequency converters of the superfine powder feeding motor and the grading motor. Check the motor rotation direction. Adjust the pulse width and clearance of the precipitator solenoid valve, and check whether the solenoid valve injection is normal and powerful. Check whether there is air leakage in the air shutter, and whether there is a feeling of suction when putting the fine powder or hand on the interface. If there is, it must be sealed. After everything is normal, the next startup sequence is: open the grading wheel, set the frequency at the high frequency (35HZ), start the high-pressure fan (after normal startup) - the main motor (after normal startup) - start the feeding motor to check the current of the main motor (do not exceed the rated current of the main motor). At this time, samples will be taken from the finished product area to test the fineness of finished powder. When the fineness exceeds the index, the speed of the grading wheel can be adjusted downward. Every time the speed of the grading wheel is adjusted, the finished powder shall be sampled and tested at intervals. When the speed of the grading wheel decreases, the current of the host machine will decrease. At this time, the feeding frequency can be gradually increased to increase the crushing output. At the same time, adjust the opening range of the high-pressure fan damper. To detect the current of the high-pressure fan of a small air flow pulverizer, it is necessary to ensure a certain amount of air flow and keep the fan working normally for a long time. If the output and fineness cannot be reached due to material difference, the grading wheel can also be rotated in the same direction as the host machine. Other debugging methods are the same as above< Br/>It can be seen from the above that the fineness of the finished product is mainly adjusted by adjusting the speed of the grading wheel and the feeding speed. In fact, users can also turn to the equipment manufacturer when they need to adjust the fineness. Generally, manufacturers of small air flow crushers have professional after-sales teams that can provide online technical advice 24 hours a day