River sand dryer three-drum dryer

River sand dryer three-drum dryer

River sand dryer three-drum dryer is a kind of high-efficiency drying equipment specially used for drying river sand. The following is a brief introduction and advantages and characteristics:

Brief introduction:

• Structural composition:

The river sand dryer three-drum dryer is mainly composed of three concentric cylinders of different diameters nested and combined. It is usually 6-7 meters long, and the material of the cylinder is generally wear-resistant and high-temperature resistant steel. The equipment is also equipped with auxiliary equipment such as feeding device, discharging device, heat source system, transmission device, support device and dust removal system.

• Working principle:

Wet river sand enters the inner cylinder of the dryer from the feeding device. In the inner cylinder, the river sand is continuously picked up and scattered by the shovel board, and heat exchange is realized in a spiral movement. Downstream drying is carried out to initially remove most of the moisture. Then the river sand enters the middle cylinder for countercurrent drying. The material is repeatedly lifted in the middle cylinder, showing a two-step forward and one-step backward movement mode, fully absorbing the heat of the inner cylinder and the middle cylinder, and prolonging the drying time. Finally, the river sand falls into the outer cylinder, moves in a rectangular multi-circuit manner in the outer cylinder, and is discharged from the discharging device after further drying. In this process, the hot air flow provided by the heat source fully contacts the river sand, so that the water in the river sand evaporates and the purpose of drying is achieved.

Advantages and characteristics:

• High efficiency and energy saving:

High thermal efficiency: The three-cylinder structure increases the contact area between the material and the hot air flow, the heat exchange is more sufficient, and the heat can be fully utilized. At the same time, the heat emitted by the inner cylinder can be partially absorbed and utilized by the middle cylinder and the outer cylinder, reducing the heat loss. The thermal efficiency can be increased by more than 30%-40% compared with the single-cylinder dryer, which can effectively reduce energy consumption.

• Strong fuel adaptability:

It can adapt to a variety of fuels, such as coal, natural gas, biomass pellets, etc. Enterprises can choose suitable fuels according to local fuel resources and costs to reduce fuel costs.

• Good drying effect:

The material is dried evenly: The unique cylinder structure and lifting plate design enable the river sand to be evenly dispersed and turned in the dryer, avoiding the accumulation of materials and uneven drying, ensuring the uniform moisture content of the river sand after drying, and the moisture content of the dried material can reach below 1-0.5%.

• High material quality:

Due to the uniform distribution of temperature and heat during the drying process, the river sand will not deteriorate or discolor due to local overheating. The river sand after drying is of high quality and meets the quality requirements of river sand in the construction, building materials and other industries.

Compact structure:

• Small footprint:

The three-cylinder dryer has a compact structure and only occupies about half of the single-cylinder dryer with the same output. It is very suitable for enterprises with limited space and can save a lot of space.

• Easy installation:

The overall structure of the equipment is simple, the installation process is relatively easy, and no complex infrastructure and large-scale lifting equipment are required, which can shorten the installation period and reduce the installation cost.

Reliable operation:

• Small equipment wear:

The friction between the river sand and the cylinder and lifting plate during the drying process is relatively small, which reduces the wear of the equipment and extends the service life of the equipment. At the same time, the transmission device of the equipment uses high-quality parts, runs smoothly and has high reliability.

• Simple operation and maintenance:

The degree of automation is high, the operation is simple and convenient, and only a small number of operators are needed to complete the production process. And the maintenance of the equipment is relatively simple, and the daily maintenance cost is low.

• Good environmental performance:

Equipped with an advanced dust removal system, it can effectively collect and treat the dust and exhaust gas generated during the drying process, reducing pollution to the environment and meeting environmental protection requirements.