Requirements for the production of lignite slag dryer cylinder

Requirements for the production of lignite slag three-cylinder dryer cylinder
1. The center line of the lignite dryer cylinder should be a straight line with a specified slope, and the error of this straightness should not exceed 2 mm.
2. The cylindricity of the cylinder should not exceed 1/1000 of the diameter.
3. If the cylinder has cracks, it can be welded and repaired. When repairing, the distance between the edges of adjacent digging and repairing places should not be less than 500mm, and sharp corners should not appear in the digging and repairing places.
4. When the cylinder body is docked, the misalignment of the ring seam steel plate can exceed one tenth of the thickness of the steel plate, and the radial deflection of the cylinder body cannot exceed 1/1000 of the diameter at the place of the large gear, and at the two sections of the kiln. No more than 2/1000 diameter, no more than 2.5/1000 diameter in the span of two rings.

5. The welding of the ash bucket should be firm and reliable, the angle should meet the regulations, the screw link must be fixed well, and the spot welding should be loose.
6. The block ring should be welded on the cylinder in sections, and the installation should meet the requirements of the drawings. The unevenness of the end surface should not exceed 5mm, and it should be inclined 3 to 5 degrees to the brick laying side.
7. Both ends of the reducing cylinder must be in accordance with the requirements of the drawings, firstly transition to the straight end cylinder, and then weld with the straight cylinder. It is not allowed to weld directly at the corners.
8. The installation position of the barrel tail retaining ring should be accurate, and the unevenness of the end surface should not exceed 10mm.
The barrel of the lignite dryer is the main moving and conveying part of the material, and it is carried in the main working link. The quality of the barrel directly affects the work of the dryer.