Rotary kiln air cooling device

Abstract

The invention discloses a wind cooling device for rotary kilns, which comprises a cold wind jacket and a fan, the cold wind jacket is provided with a cold wind opening, a cold wind duct is arranged on the external cylindrical surface of the cold wind jacket, the cold wind duct comprises an inner arc-shaped plate, an outer arc-shaped plate, a left sealing plate, a right sealing plate, a front sealing plate and a rear sealing plate, which are welded to form a closed space, the inner cylindrical surface of the inner arc-shaped plate is matched with the outer cylindrical surface of the cold wind jacket, the front sealing plate is provided with a plurality of first through holes connected with the closed space, each first through hole is connected with one end of a steel pipe, the air outlets of the other ends of the steel pipes are matched with the position of the kilneye and protecting iron of a kiln shell, the middle of the outer arc-shaped plate is provided with a second through hole, which is connected with the end of an air outlet pipe of the fan, and the air outlet of the fan is connected with the air outlet pipe through flanges and bolt-nut assemblies. The wind cooling device for rotary kilns is convenient to mount, has a good cooling effect, prolongs the life of equipment, and reduces maintenance cost.

Description

technical field [0001] The invention relates to the technical field of cement kiln production equipment, in particular to an air cooling device for a rotary kiln. Background technique [0002] In the prior art, the cold air jacket of the kiln used for cement production is in the form of a flat rectangular structure. The problem with this straight structure is that since the cold air jacket and the kiln shell are arc-shaped, from the straight Part of the cold air coming out of the outlet cannot enter the cold air jacket, which reduces the cooling effect, and the wind is too concentrated, part of the cold air is reflected back by the end face of the kiln backing iron, the cooling effect is not good, and the metal parts are more likely to be oxidized and damaged at high temperatures, which increases the Use and maintenance costs also increase the labor intensity of maintenance personnel and reduce production efficiency. Contents of the invention [0003] The purpose of the p...

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Problems solved by technology

[0002] In the prior art, the cold air jacket of the kiln used for cement production is in the form of a flat rectangular structure. The problem with this straight structure is that since the cold air jacket and the kiln shell are arc-shaped, from the straight Part of the cold air coming out of the outlet cannot enter the cold air jacket, which reduces the cooling effect, and the wind is too concentrated, part of the cold air is reflected back by the end face of the kiln backing iron, the cooling effect is not good, and the metal parts are more likely to be oxidized and damaged at high temperatures, which increases the Use and maintenance costs also increase the labor intensity of maintenance personnel and reduce production efficiency

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