The ideal equipment for drying river sand is the three - return dryer. The ideal three - return model is the 6210 three - return dryer. Every user who purchases a dryer equipment not only cares about the quality of the equipment and after - sales service, but also pays great attention to its output. So, what are the factors that affect the output of the three - return river sand dryer?

1. The internal structure of the three - return dryer is the most crucial technical factor affecting its working efficiency. This includes the distribution and angle of the internal spiral blades, as well as the taper and distance of the three cylinders, all of which will directly affect the working efficiency of the three - return dryer.

2. Whether the feeding equipment can feed evenly and in the required quantity. If the feeding is too much or too little, it will affect the operating efficiency and effect of the dryer.

3. Whether the heat can be supplied reasonably. The heat source of the three - return dryer is provided by a hot - blast stove and a blower. If the heat supply is insufficient, it will also directly affect the working efficiency of the dryer.

4. Whether the air - induction volume of the air - induction system reaches the required level. The air - induction system of the three - return dryer is also very crucial. If the air - induction volume is too large, it will cause serious wear at the elbows of the air duct. If the air - induction volume is too small, it will be difficult to discharge the smoke and dust. Therefore, the air - induction system also affects the working efficiency of the three - return dryer.

Among the above four factors affecting the working efficiency of the three - return dryer, factors 2, 3, and 4 are relatively easy to solve, but the internal structure is a technical problem. If some manufacturers do not have a good understanding of the three - return dryer and do not accurately master the technical parameters, the equipment produced will hardly meet the output requirements of users. Therefore, one should be cautious when choosing equipment.