A scraper is attached to the bottom of the drying tower and the cyclone outlet. The bottom of the drying tower and the cyclone discharge port are easily blocked by agglomerated or softened materials. Mechanical scraping knives should be added to these parts to force the removal of clogged materials. The blade is also susceptible to softened material. Therefore, the blade should be hollow and cooled with cold air. Spray powdered or dry powder around the drying tower.
A certain amount of compressed air is sucked into a certain amount of powdery filler or dry powder through the venturi, and is sent into the tower at the top of the drying tower, and evenly arranged on the surface of the tower to block the undried, easy-to-stick material and the inner wall of the drying tower. Contact, thereby reducing the condition of the inner wall of the drying tower. The added powdery filler improves the hygroscopicity and viscosity of the insecticidal double, and reduces the phenomenon that the discharge port is easily blocked.
Control equipment and operating parameters. The drying of the low melting point material in the double insecticidal solution is difficult. When the temperature is high, its morphology changes, and the outer part is easy to form a hard and dense outer shell to prevent the internal moisture from spreading. In a short drying time, the internal moisture is discharged after it has not dried, and it is soft and sticky. When the water content is low to a certain value, the cold wind becomes loose and brittle, which is convenient for the subsequent operation. Therefore, it is necessary to reduce the operation speed and prolong the drying time, which is beneficial to the drying of the low-melting material and the wall-forming phenomenon of the dry material. The cost of insecticidal double dry milling includes fuel, power, labor, equipment and factory depreciation, etc. The unit operating cost of 45 insecticidal double powder is: 1135 yuan/kg. The packaging and transportation fee of 18 insecticidal double-water agent reached 016 yuan/kg. According to the comparison of equal content, 1kg45 powder is equivalent to 215kg18 water agent. If the annual output is 400 tons, the annual efficiency increase is about 260,000 yuan, and the economic benefits are considerable.
Problems with dry milling equipment
2018 12/25
