How to buy the drum dryer correctly

The so-called tumble dryer, also known as the drum dryer. It is widely used in building materials, metallurgy, chemical industry and cement industries. The materials used for drying mainly include slag limestone, coal ash, slag and clay. The machine is mainly composed of a rotating body, a lifting plate, a transmission device, a supporting device and a sealing ring. The utility model has the advantages of reasonable structure, excellent production, high output, low energy consumption and convenient operation. At the same time, the drum dryer can also be applied to the production of compound fertilizer, drying fertilizer with certain humidity and granularity. The machine also has the characteristics of high utilization rate of heat energy, uniform drying, less material cleaning, and convenient maintenance. So how do you buy a tumble dryer? What are the correct ways to buy a tumble dryer? Here is a brief introduction to how to properly purchase the drum dryer.
We must know that the drying medium of the direct heat transfer tumble dryer is flue gas. Here we should divide it into two aspects: downstream or countercurrent drying. First, let’s first understand what is smooth. Flow drying and counter flow drying. The so-called downstream drying is that the combustion chamber and the wet material feed are at the same end, the direction of the hot gas flow is consistent with the direction of movement of the material, and the wet material is transferred from the feed end to the discharge end, and the hot air is also The feed end flows out of the well discharge end under the action of the blower and the induced draft fan. During this flow, the wet material is dried with the heating of the hot air; the so-called countercurrent drying means that the wet material enters the dryer from the feed end. The combustion chamber is at the discharge end. During this process, the material and the hot air are moved in the opposite direction, and the wet material is dried due to heat during the movement. Secondly, when purchasing, the specific method of drying depends on the final requirements of the material to be dried. However, we must know that the initial drying force of the downstream drying is large, and the temperature of the drying medium will decrease with the increase of the temperature of the material. This is more suitable for the final water content (ie, the degree of drying). materials. Countercurrent drying In the drying process, since the drying driving force is relatively uniform, it is suitable for the drying of the material to be dried.