working principle:

The sludge dryer can dry materials with a moisture content of 90% to finished products in one go. In response to the tendency of sludge to agglomerate during the drying process, the sheet structure of a typical single channel dryer has been changed, and a combined self-cleaning device has been adopted, greatly expanding the application range of the single channel dryer. It can not only dry various types of sludge, but also various high viscosity materials.

The sludge enters the guide plate inside the dryer through the chute of the feeder. With the rotation of the cylinder, the sludge is guided to the inclined lifting plate and lifted to the center of the cylinder, gradually scattering to form a material curtain. High temperature airflow passes through it, preheating the sludge and evaporating some of its moisture. When the sludge spills and moves onto the active grate wing, the material mixes with the preheated grate wing, transferring heat to the material and causing some moisture to evaporate. At the same time, the material carried by the wing plate is lifted and scattered multiple times, and the material undergoes convection and contact heat exchange with the hot air flow. At the same time, the cleaning device buried in the material also slides down along the inner side of the arc-shaped lifting plate to clean the material adhered to the inner wall of the lifting plate. After the cleaning device rotates along the vertical line with the cylinder, it is dragged on the back of the circular arc lifting plate to clean the material adhered to the outer wall of the lifting plate. As the cylinder continues to rotate, some of the water evaporates and the sludge is further dried. At the same time, the cleaning device also plays a role in breaking the sludge balls, improving the drying speed. After the sludge is dried, it becomes a loose material with low moisture content and is discharged from the discharge outlet.

Performance characteristics:

The sludge dryer mainly consists of an induced draft fan, a dispersing device, a belt feeder, a feeding machine, a rotary drum, a heat source, a belt discharge machine, an unloader, and a distribution cabinet. Therefore, the working area of the sludge dryer includes the discharge area, inclined lifting plate area, cleaning area, and guide area.

Equipment video