Rolling ring assembling method of drying machine

Abstract

The invention discloses a rolling ring assembling method of a drying machine. The rolling ring assembling method of the drying machine comprises the following steps that (1) equipment is manufacturedby adopting a section making mode; (2) one section where a rolling ring of the drying machine needs to be installed is separately; (3) a steel plate is adopted to roll into a cylinder; (4) two supporting circular flanges are manufactured, and the two supporting circular flanges are used as supporting circles of the cylinder obtained in the previous step to be placed inside the cylinder, so that the inner wall of the cylinder is in close contact with the outer circumferential surfaced of the two supporting circular flanges and is connected in a welded mode; (5) a supporting plate is welded to the outside of the cylinder, moreover, vertical turning is carried out, and the supporting plate is turned to reach the size which can be interference fit with the rolling ring of the drying machine; (6) after turning of the supporting plate is completed, the rolling ring of the drying machine is heated and is installed by utilizing the principle of thermal expansion and contraction; and (7) aftercooling, the rolling ring of the drying machine is in interference fit with the turned supporting plate. According to the rolling ring assembling method of the drying machine, the functions that the stress concentration during assembly is reduced, the phenomenon that the rolling ring is separated from the cylinder body is avoided, and the normal operation of the equipment is ensured are achieved.

Description

technical field [0001] The invention relates to the field of dryers, in particular to a method for assembling a roller ring of a dryer. Background technique [0002] Particleboard wood industry often uses drum dryers. The roller ring of the dryer is an indispensable part of the drum dryer. Because the diameter of the drum dryer is generally relatively large, the effective diameter of most equipment is above ￠2m. Now the world The largest effective diameter ￠7m made above, there are several forms for the assembly of the rolling ring, the existing form includes the use of a steel plate with a corresponding gap thickness between the rolling ring and the cylinder, and then the steel plate, the cylinder and the rolling ring Welded together, the defect is that due to the relatively large diameter of the equipment, the dryer passage is made of steel plate coiled paper, it is difficult to ensure the roundness of the drum when the drum is rolled, and it is easy to produce abnormaliti...

AI Technical Summary

Problems solved by technology

[0002] Particleboard wood industry often uses drum dryers. The roller ring of the dryer is an indispensable part of the drum dryer. Because the diameter of the drum dryer is generally relatively large, the effective diameter of most equipment is above ￠2m. Now the world The largest effective diameter ￠7m made above, there are several forms for the assembly of the rolling ring, the existing form includes the use of a steel plate with a corresponding gap thickness between the rolling ring and the cylinder, and then the steel plate, the cylinder and the rolling ring Welded together, the defect is that due to the relatively large diameter of the equipment, the dryer passage is made of steel plate coiled paper, it is difficult to ensure the roundness of the drum when the drum is rolled, and it is easy to produce abnormalities when the rolling ring is installed. The gap is relatively large and the gap is relatively small, the thickness of the steel plate in the middle plug will also change, and the welding will be different during welding. Stress will be generated due to welding, and the final stress will be concentrated on the rolling ring. Pulling deformation, because the rolling ring is originally processed by a lathe, the roundness is relatively good, but after welding and assembly, it will basically have different degrees of ellipse. The moisture content of the actual drying material is different and the external temperature is different, so it can be adjusted at any time, so the shrinkage and expansion of the dryer can change at any time, and the welding will seriously affect the use.

[0003] There are also some dryers in the form of wedges, using wedges between the rolling ring and the cylinder, some directly welding the wedges between the rolling ring and the cylinder, and some using top wires to withstand the top of the wedges. The disadvantage of welding is the same as the above method. When using the top wire to withstand it, if the staff does not check it in time, the top wire will loosen. After a long time, the wedge will fall off, so that the rolling ring and the cylinder will be separated, and eventually the rolling ring will be caused. Ring or barrel damage

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