A kind of inner cylinder for cement preheater

Abstract

The invention discloses an inner cylinder for a cement preheater. The inner cylinder comprises a cylinder body. A buffer layer is installed on the inner wall of the cylinder body. Arc-shaped ceramic hanging pieces are installed on the inner wall of the buffer layer. Each ceramic hanging piece is composed of a first wedge-shaped hanging plate and a second wedge-shaped hanging plate, wherein the first wedge-shaped hanging plate is in the shape of a big-end-up wedge; the second wedge-shaped hanging plate is in the shape of a big-end-down wedge; the wedge degree of the first wedge-shaped hanging plate is consistent with that of the second wedge-shaped hanging plate; the upper end of the first wedge-shaped hanging plate is provided with a first lug extending towards the bottom end; a first groove matched with the first lug is formed in the position, corresponding to the first lug, of the second wedge-shaped hanging plate; the first lug is matched with the first groove when the first wedge-shaped hanging plate is combined with the second wedge-shaped hanging plate. Two second lugs which extend upwards are arranged at the top end of each ceramic hanging piece, and a second groove which is open upwards is formed between the two second lugs on each ceramic hanging piece. According to the inner cylinder for the preheater, seamless connection between the arc-shaped ceramic hanging pieces is achieved, the tightness is high, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of preheaters, in particular to an inner cylinder used for a cement preheater. Background technique [0002] At present, the cement preheater is a kind of equipment that uses the high-temperature exhaust gas of the rotary kiln to heat the cement raw materials. Most of the existing inner cylinders used for cement preheaters are connected by ceramic hanging pieces. The sealing of the connection gap of the hanging piece is not good, which will cause damage to the cylinder and reduce the service life, and the high-temperature exhaust gas of the rotary kiln contains a large amount of dust, and the flow rate is fast. The existing ceramic hanging piece has insufficient erosion resistance to the high-temperature exhaust gas , Often cause damage to the ceramic hanging piece. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide an inner cy...

AI Technical Summary

Problems solved by technology

[0002] At present, the cement preheater is a kind of equipment that uses the high-temperature exhaust gas of the rotary kiln to heat the cement raw materials. Most of the existing inner cylinders used for cement preheaters are connected by ceramic hanging pieces. The sealing of the connection gap of the hanging piece is not good, which will cause damage to the cylinder and reduce the service life, and the high-temperature exhaust gas of the rotary kiln contains a large amount of dust, and the flow rate is fast. The existing ceramic hanging piece has insufficient erosion resistance to the high-temperature exhaust gas , often cause damage to the ceramic hanging piece

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