Domestic disc dryer

Vacuum disc dryer

Disc type continuous dryerIt is an efficient conductive continuous drying equipment. Its structure and working principle determine that it has the characteristics of high thermal efficiency, low energy consumption, small footprint, simple configuration, convenient operation and control, and good operating environment. It is widely used in drying operations in industries such as chemical, pharmaceutical, pesticide, food, feed, and agricultural and sideline product processing. Highly praised in practical applications across various industries. We currently produce three types of products: atmospheric pressure, sealed, and vacuum, with four specifications of 1200, 1500, 2200, and 3000. A (carbon steel), B (uniform stainless steel in contact with materials), and C (based on B) are available. Add stainless steel to the steam pipeline, main shaft, and bracket, and lining the cylinder and top cover with stainless steel. Three types of materials, with a drying area of 4-180m2, a series of hundreds of models of products, and can provide matching auxiliary equipment to meet the needs of users for drying various materials.

Characteristics of disc continuous dryer:
（1） Easy regulation and strong applicability
1. By adjusting the thickness of the material layer, spindle speed, number of rake arms, rake blade type and size, the drying process can be optimized.
2. Each layer of the drying tray can be separately filled with hot or cold medium to heat or cool the material, and the temperature control of the material is accurate and easy.
3. The residence time of materials can be precisely adjusted.
4. The material flow is single, with no backmixing phenomenon, uniform drying, stable quality, and no need for further mixing.
（2） Simple and easy to operate
1. The operation of driving and parking the dryer is very simple.
2. After stopping the feeding, the scraper blades for conveying material can quickly empty the material inside the dryer.
3. Through the special large-sized inspection door mirror, the equipment can be carefully cleaned and observed inside.
（3） Low energy consumption
1. The material layer is very dense, the spindle speed is low, and the material conveying system requires less power and consumes less electricity.
2. Drying with conductive heat results in high thermal efficiency and low energy consumption.
（4） Good operating environment, recyclable solvents, and dust emissions meet requirements
1. Atmospheric pressure type: Due to the low airflow velocity and low humidity distribution inside the equipment, it is difficult for dust to float to the top of the equipment. Therefore, the exhaust gas discharged from the top humidity outlet contains almost no dust.
2. Sealed type: equipped with a solvent recovery device, which can conveniently recover organic solvents from wet gas. The solvent recovery device is simple and has a high recovery rate. For flammable, explosive, toxic, and easily oxidizable materials, nitrogen can be used as a carrier gas for closed-loop circulation to ensure safe operation. Specially suitable for drying flammable, explosive, and toxic materials.
3. Vacuum type: in vacuum; The disc dryer operated in a barking state is particularly suitable for drying heat sensitive materials.
（5） Easy installation and small footprint
1. The dryer is shipped as a whole and only needs to be lifted into place for easy installation and positioning.
2. Due to the layered arrangement and vertical installation of the drying tray, even if the drying area is large, the footprint is also very small.

Working Principle:
Wet materials are continuously added to the upper layer drying disc of the dryer from the feeder, and the rake arm with rake blades rotates to make the rake arm rotate and make the rake blades continuously flip the materials. The material flows along an exponential spiral over the surface of the drying disc, and the material on the small drying disc is transferred to the outer edge, where it falls onto the outer edge of the large drying disc below. On the large drying disc, the material moves inward and falls into the next layer of small drying disc from the middle feeding port. The drying plates of different sizes are arranged alternately up and down, allowing the material to flow continuously through the entire dryer. A hollow drying tray is filled with heating medium, which includes saturated steam, hot water, and thermal oil. The heating medium enters from one end of the drying tray and exits from the other end. The dried material falls from the layer drying tray to the bottom of the shell, and is finally transferred to the discharge port by the rake blade for discharge. Moisture escapes from the material and is discharged through the dehumidification port located on the top cover. The moisture in the vacuum disc dryer is extracted through the vacuum pump port located on the top cover. Dry materials discharged from the bottom layer can be directly packaged. By adding auxiliary equipment such as fin heaters, solvent recovery condensers, bag filters, dry material mixing mechanisms, and induced draft fans, the production capacity of drying can be improved. Drying paste like and heat sensitive materials can facilitate solvent recovery and enable pyrolysis and reaction operations.

Vacuum disc dryerApplication:
Drying, pyrolysis, combustion, cooling, reaction, sublimation: organic chemical products, inorganic chemical products, pharmaceuticals, food, feed, fertilizers.

Technical features:
（1） Drying dish
1. Design pressure: generally 0.4MPa, up to 1.6MPa
2. Usage pressure: generally ≤ 0.4MPa, up to 1.6MPa
3. Heating medium: steam, hot water, thermal oil. When the temperature of the drying disc is 100 ℃, hot water is used for heating. When the temperature is between 100 ℃ and 150 ℃, saturated steam or superheated steam with a pressure of ≤ 0.4MPa is used for heating. When the temperature is between 150 ℃ and 320 ℃, thermal oil is used for heating. When the temperature is above 320 ℃, methods such as electricity, thermal oil, and molten salt can be used for heating.
（2） Material conveying system
1. Spindle speed: 1-10 RPM, electromagnetic or variable frequency stepless speed regulation.
2. Rake arms: There are 2-8 rake arms fixed to the main shaft on each layer of the drying disc.
3. Rake blade: Twisted onto the rake arm, it can float up and down with the disc surface to maintain contact, and has various forms.
4. Rolling: For materials that are prone to clumping and need to be crushed, adding rolling at appropriate positions can enhance heat transfer and drying processes.
（3） Shell
There are three types: atmospheric pressure, sealed, and vacuum
1. Atmospheric pressure type: cylindrical or octagonal, with two types of structures: integral and split. The main pipeline for the inlet and outlet of the heating medium can be located inside or outside the shell.
2. Sealed type: The cylindrical shell can withstand an internal pressure of 5KPa, and the main pipes for heating medium inlet and outlet can be inside or outside the shell.
3. Vacuum type: cylindrical shell, designed for an external pressure of 0.1MPa, with the main inlet and outlet pipelines of the heating medium inside the shell.
（4） Air heater
Generally used in situations with high evaporation to enhance drying efficiency.

Technical Specifications: