Chinese herbal medicine extract is refined from root, stem and leaves of plants, and contains high sugar
especially from alcoholization process, which is easy melted at high temperature. Normal centrifugal spraying cannot meet its drying requirements. For that reason, our company organized a group of technicians to develop such a dryer especially used for Chinese herbal medicine extract atter repeated calculations and countless tests on the basis of our experiences to make spraying dryer and collect advantages of same kind of dryers from both domeStic and abroad.
Modifications have been made when designing Chinese Herbal Medicine EXtract Spraying Dryer :
1 .The diameter and height of the tower have be modified to ensure that powder cannot reach at the wall of the tower before drying, and ensure that powder will have dwelling time in hot air to complete low-temperature drying. The wall of the tower has sandwich cooling device to ensure liquid materials not to be softened, melt or coked when they are stuck on the wall which will have partial high-temperature. There is air shocker on the cone body which has larger taper and can pulsate the tube by compressed air to shake down powder which is stuck on the tube.
2.All contact place inside the dryer have plain or round surtace, and is ground and polished(fine polish over 10) to avoid sand hole and dead angIe etc. The contact surface is made of stainIess steeI to ensure materials free of pollution. The driving parts have good sealing to prevent water and oil. Materials discharge is done by sealed butterfly valve to avoid air leaking. Discharge pipes are connected flexibly for easy dismantling in order to meet GMP requirement.
3.There-stage air filters are used on air pre-treatment system and air can be purified up to 100 thousand level.
4.PLC program control system circuit is used and cartoons of contact screen dispIays technological process. Variable data carries out automatic trace and regulation by fuzzy technique, the atomizer is adjusted stably by frequency converter, temperature of incoming air is adjusted by the power-reguIator, precision can teach pIus and minus two so as to largely reduce energy consumption. lncoming and outgoing temperature as well as pressure inside the tower can be set up precisely