Factory Double Drum Food Drum Dryer Oatmeal Scraper Drum Dryer Rotary

Drum dryer is a kind of rotating continuous drying equipment with internal heating conducting-style. Certain thickness of materials film attach to the drum from material liquid vessel under the drum. Heat is transferred to the internal wall of the cylinder through pipes and then to the external wall and to materials film, to evaporate the moisture in materials film so as to dry materials. Dried products are then scraped off by the blade fitted on the surface of the cylinder, fall down to the spiral conveyor under the blade, and are conveyed, collected and packed.
1.High heat efficiency: The heat transfer of the cylinder dryer is heat conduction and the conducting direction keeps identical with operation circle. Most of the heats can be used for evaporation of wet materials on the wall the cylinder. The efficiency can reach 70-80%.
2.Flexible operation elasticity and wide application: Various drying factors of the dryer can be adjusted, such as concentration of the liquid, thickness of material film, temperature of heating medium, rotating speed of the drum, and etc. These factors can change drying efficiency of the cylinder dryer. As these factors have no interrelations each other, it brings great convenience to dry operation and makes it applicable to dry different materials and meet different production requirements.
3.Short drying period: The drying period of materials is normally 10 to 300 seconds, so it is suitable for heat-sensitive materials. It also can be pressure reducing operated if it is put in vacuum vessel.
4.Fast drying rate: The thickness of the material film on the wall of the cylinder is very thin. Normal, thickness is 0.3 to 1.5mm. The directions of heat and mass transmittal are identical so the evaporation strength on the surface of material film can be 20-70 kg.H2O/m2.h.

Working principle of roller scraper dryer

Drying process: Let the liquid or muddy material form a film on the surface of the drum heated by steam or other heat carriers. The drum is dried in one revolution. The product is scraped off with a scraper, and the exposed surface of the drum comes into contact with the raw material again. And form a film to dry.
The drum scraper dryer uses a certain method to spread the liquid or pasty material on the drum (hollow metal cylinder) with a 0.1-1.5mm film. The drum can be heated with steam, hot water or thermal oil. When the drum rotates once, the material can be dried and scraped off the surface of the cylinder by a special scraper. The drum scraper dryer generally rotates at a speed of 4 to 6 rpm.
The drying of the paste-like material is to adjust the thickness of the material and to compact the material layer. On the side close to the feeding device, a material compression shaft is installed to make the material evenly spread on the drum. In order to make the material easier to fall off when the scraper discharges the material, before the scraping, the cold air pipe can also be used to blow a certain amount of cold air to cool the material.

Technical parameters

Features of drum scraper dryer
- Lower consumption and operation cost
- Capable to dry different kinds of product
- Stable operation
- Uniform dried product
- Both dryer and calciner, operation Temp. Up to 1000°C
- Heat source can be steam, electricity, coal, natural gas etc.

Sale service:

In order to fulfill the contract smoothly, establish a good cooperative relationship, here's are several points what we must do.
(1). ensure product with high quality and pre-commissioning before delivery
(2). delivery on time
(3). provide full set of documents as customer’s requirements

After-sale service:
Provide considerate services to minimize customers’ worries.
(1). Assist customers to prepare for the first construction scheme.
(2). Install and debuging the drying equipment.
(3). Train the first-line operators.
(4). Exame the drying equipment.
(5). Take initiative to eliminate the troubles rapidly.
(6). Provide technical support.
(7). Establish long-term and friendly relationship with all my customers.

Service commitment:
We provide customers 12-months warranty to make sure the machine work well, and always keep certain inventory level of spare parts, which means the replacements can be sent to you timely. At the same time, we send every customer a preferential and reasonable quotation.