Fully enclosed vertical vacuum drying equipment for raw materials

2023/04/15

Single Cone Spiral Vacuum Dryer for Raw Materials
Equipment overview
Single cone spiral vacuum dryer
It is the vacuum drying equipment that has been widely used in the production of pharmaceuticals in European and American countries. Manufacturers with many years of experience in the production of raw materials know the technical advantages of the single-cone spiral vacuum dryer, such as optimized mixing system, heating efficiency of dried materials, high Quality and precisely manufactured components, precision of the minimum distance between the helical agitator and the drum wall, reliable and robust design, minimal maintenance. This kind of equipment is still blank in China, and the successful development of this drying equipment has also greatly improved the level of equipment produced in the domestic medical and chemical industry.


Cone Spiral Vacuum Dryer
Typical process
The working process of the single-cone spiral vacuum dryer is a batch operation. After the wet material enters the silo, it is dried by jacket, stirring and heating.

By selecting the appropriate working volume of the single-cone vacuum dryer, the required processing capacity range can be achieved. The agitator and the agitating screw with the upper drive structure can be disassembled in sections. Due to the abundant installation space, it is suitable for use in the workshop and maintenance. At the same time, the high-efficiency drying and mixing capacity of the single-cone spiral vacuum dryer is 3-4 times that of the double-cone vacuum dryer. The material filling rate can work normally at 10%-100%, and the cantilever screw can achieve high mixing accuracy. It can also be mixed evenly in the dryer under the harsh conditions of adding a small amount of materials to a large number of materials. Due to its distinctive gentle stirring characteristics, even products that are sensitive to drying processing will not be damaged. Required The drive power is relatively low. The high-vacuum design of this dryer has obvious advantages for products that are sensitive to drying temperature, and has good heat conduction capacity, fast drying, and low energy consumption. The filter directly connected to the dryer can keep the dust particles in the processing area. The machine adopts an inflatable sealed hemispherical valve, which can discharge materials thoroughly and conveniently. It has excellent vacuum and pressure-resistant sealing performance, no dead ends, easy-to-clean design, and stable performance. , Long service life, so as to ensure that you can continue to process products without any loss.

Such a multi-purpose dry mixing equipment is the ideal equipment to solve your production needs.


Features of Single Cone Spiral Vacuum Dryer for Raw Materials
Full cantilever conical stirring screw shaft fully enclosed system
The product has gentle stirring and good recyclability. Various materials and technologies are used to achieve safe and reliable sealing. Low mechanical shear force, short drying time, low energy consumption, high precision, good stirring effect, strong reproducibility, no pollution gas leakage, suitable for production A variety of craft products, widely used Adjust the speed according to the product characteristics and can flexibly share the load (10-100%), which has no effect on product quality. Use heating and stirring screw shaft to shorten the drying time. Solid discharge and cleaning liquid discharge without residue to ensure products, The safe online cleaning of operators and production links is efficient and simple, and the discharge is thorough. It can be flexibly used in the processing of various products.


4. Application scope of single cone spiral vacuum dryer
Liquid products: dangerous substances such as powders, granules, and crystals
Products sensitive to mechanical handling and high temperatures Flammables and explosive powders
Products easily decomposed by oxidation Products stained with flammable solutions



5. The main structure of the single-cone spiral vacuum dryer for raw materials
1. Agitator: Double motors, double reducers, and double-shaft transmission execute the revolution of the cantilever shaft and the rotation of the stirring shaft. The stirring shaft is equipped with a specially designed sanitary double-end mechanical seal.
2. Cylinder: The cylinder consists of a head and a conical cylinder. The head and the cylinder are jacketed for heating and heat preservation. There are necessary manholes, process nozzles, sight glasses, stable pressure, and long service life. Stirrer, bottom discharge valve, upper feed valve, dust filter.


3. Dust filter: The dust filter is composed of a heat-insulated and heated outer cylinder, a filter element, a blowback and a cleaning device.
4. Stirring screw: the screw itself is conical, the diameter of the screw thread rises from the bottom to the top, the mixing screw is fully cantilevered to avoid the need for a bottom support bearing, a solid central gearbox assembly and a top bearing arrangement, the mixing screw has a The hollow solid central shaft and the spiral scraper continuously welded on the central shaft, the double-sided hollow spiral scraper and the hollow central shaft form a heating circuit.
5. Mechanical seal system: The mechanical seal liquid is used as an external liquid barrier and a safe mechanical seal indication system, which is designed to have a thermosiphon cycle or a pump cycle and an electric control switch. All mechanical seals of the dryer pass through a common Circulation, the two internal loop systems between the double-end mechanical seals are connected to an external liquid storage lubricating seal liquid storage tank, so that the safety and preventive control of the seal integrity by monitoring the liquid level, mechanical seal products The connection parts meet the standard, the tank is filled with sterile water liquid, it can be circulated and can be completely emptied, the liquid system operation conforms to the GMP standard.


6. Inflatable and sealed hemispherical valve (feeding and discharging valve of vacuum dryer): This hemispherical valve is designed to meet the special needs of feeding and discharging of single cone vacuum dryer. The valve is manufactured according to precise tolerance standards. Combined with the special structure, a good vacuum and pressure sealing environment is formed. The standard airtight airtight design has no dead ends and is easy to clean. It meets the standards and can be cleaned online.



6. Design Features
1. Modular drive system, interchangeable with various specifications, standardized and systematic design.
2. Modular dust filtration system, interchangeable with various filter specifications, standardized and systematic design.


3. Hemispherical valve, universal in all specifications, standardized design.
4. Modular rotary joint, interchangeable with various specifications, standardized and systematic design.
5. Vacuum sampling valve, universal in all specifications, standardized design.

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