Overview of spray dryer for Chinese herbal extract
Traditional Chinese medicine extract is extracted from plant roots, stems and leaves, especially the alcohol extraction process. It contains high sugar, and is easy to soften and melt under high temperature. Ordinary centrifugal spray can no longer meet the drying requirements. In response to this situation, our company has organized a number of lean technical forces, summarized the successful experience of our factory in designing and manufacturing spray dryers over the years, collected the advantages of the same type of products in the same industry at home and abroad, developed a special spray dryer unit for traditional Chinese medicine through precise, repeated process calculations and countless experiments, and promoted it to some well-known pharmaceutical factories.

Working Principle of spray Dryer for Chinese Herbal Extract
The high-speed centrifugal spray device for Chinese herbal extracts is the application of centrifugal spray drying technology in the drying of specific materials. It is also a drying device that uses high-speed centrifugal atomizers to disperse materials into mist, fully contact with hot air, complete instant drying, and form powder finished products.
The machine adopts a fully enclosed form, with all components made of stainless steel and equipped with a three-stage purification device. The filtered air meets the requirement of 100000 level. The cylinder and top are equipped with cold wall devices to keep the wall temperature below 80 ℃, and the drying tower is equipped with an air brush sweeping device. After being dried by this machine, the traditional Chinese medicine extract powder will not undergo coking or deterioration, greatly increasing the powder collection rate (over 95%), and will not produce mixing or sticking phenomena.

Process Flow Diagram of spray Dryer for Chinese Herbal Extract

Equipment characteristics of spray dryer for Chinese herbal extracts
The tower body has a cold air jacket; The tower is equipped with an automatic vibration device;
The tower body and pipelines are equipped with quick opening cleaning holes and drainage holes; ◎ Can be equipped with an automatic control constant temperature feeding tank;
◎ Can be equipped with manual high-pressure washing tower accessories; The part in contact with the material is made of stainless steel material; (or made entirely of stainless steel);
The material collection adopts a two-stage cyclone dust removal device, or a first stage; ◎ Cyclone dust collector and wet dust collector;
◎ Automatic control and continuous device for inlet air temperature; ◎ It can be equipped with a gas scanning device.

Equipment Structure Diagram of spray Dryer for Chinese Herbal Extract

The design of spray drying unit for traditional Chinese medicine has been improved
1. The tower diameter and height have been adjusted accordingly to ensure that the material does not come into contact with the tower wall before drying, and to ensure the residence time of the material in the hot air; The tower wall is equipped with a jacket cold air cooling device to ensure that the material is adsorbed on the tower wall and may soften, melt, or even coke due to local high temperatures; The cone angle increases, and an air shock absorber is installed on the cone. The compressed air pulse seismic cylinder is used to smoothly shoot down the powder adsorbed on the cylinder;
2. All parts of the host that come into contact with materials use flat or curved transitions, and the contact surfaces are polished and polished (precision polishing to 10 or more) to avoid sand holes and blind spots. Eliminate material accumulation and blockage; The entire unit and material contact area are made of stainless steel to ensure that the materials are not contaminated; The transmission components in contact with the material are well sealed, which can prevent water and oil; Use sealed butterfly valves at the discharge area to prevent air leakage; The induced draft discharge pipe section adopts flexible connections, which can be disassembled, cleaned, disinfected, sterilized, etc. at any time;
3. The air pretreatment system adopts air filtration for middle and high school students, purifying the air to a level of 100000;
4. The feeding system adopts a unique freezing and dehumidification feeding method, effectively solving the problems of product agglomeration, softening, and moisture absorption;
5. The elbow from the main drying tower to the cyclone separator is made of one-time formed 304 stainless steel smooth pipeline to prevent material accumulation, and is connected by clamp quick opening method for easy sewage discharge during cleaning;
6. This unit uses PLC program to control the system circuit; The touch screen animation display process is operable, and variable operating parameters are automatically tracked and adjusted using fuzzy technology; Stabilize and safely adjust the atomizer with a frequency converter; Digital display of inlet and outlet air temperature, tower pressure, which can be set, etc.

Technical Specifications of spray Dryer for Chinese Herbal Extract

Note: The actual external dimensions can be determined according to the customer's actual situation, and the above dimensions are for reference only.

The above evaporation rate is the highest evaporation rate.