What is the working principle of double cylinder dryer?

The working principle of double-cylinder dryer:

The double-cylinder dryer is mainly used for drying granular materials within a certain range of humidity and particle size, such as yellow sand used in the dry mortar industry, foundry industry with a variety of specifications of sand, building materials and cement industry, blast furnace slag, small particle size of clay, the chemical industry for the chemical change is not afraid of high temperatures and soot stained small particles of materials. According to different industries on the final moisture requirements of the dried material, the moisture content of the dried material can reach 1-0.5% or less. The material in the double cylinder dryer is suitable to be <30mm.

Main features:

1, double-cylinder dryer high thermal efficiency, energy saving effect is remarkable. After testing, the thermal efficiency greatly exceeds the level of about 50% of the traditional single cylinder dryer. After the equipment is put into operation and used, the coal saving effect is remarkable.

2, the drying mechanism is scientific and reasonable, high efficiency and energy saving. The material in the inner cylinder and the hot airflow in the form of radiation, convection, conduction heat exchange, the outer cylinder heat exchange in the form of conduction, convection and use.

3. The length of the machine is shortened, which is favorable for process arrangement. The length of the whole machine is about 40% shorter than that of the single cylinder dryer, which reduces the building area of the plant and saves the project investment, and it is also more suitable for the technological arrangement of the old plant renovation.

4, the machine adopts material and hot air flow downstream drying process, applicable to a wide range. It can adapt to the drying of various raw materials such as clay, coal, slag, iron powder, etc. It is also applicable to the drying of various bulk materials in metallurgy, chemical industry and other departments.

5, the machine has a compact structure. The whole machine is arranged horizontally and supported by pallet, canceling the large and small gear drive and replacing it with pallet drive, which makes the equipment more convenient to install, simpler to operate, more reliable to run and higher operation rate.

6, the external surface area of the machine is more than 30% less than that of the single cylinder rotary dryer, and the outer cylinder has thermal insulation effect on the inner cylinder, the surface temperature of the outer cylinder is low, and the heat loss is less, which greatly improves the labor environment and labor conditions while saving energy efficiently.

7, a variety of lifting plate design, angular lifting plate and the organic combination of the word lifting plate, so that the material and the hot flue gas exchange is more fully, reducing the dryer cylinder "wind tunnel" mechanism.

8, the use of frequency conversion speed control, adjust the cylinder speed, according to the moisture into the machine, the output requirements, the use of appropriate speed to ensure that the next process needs.