SU1375924A2 - Rotating furnace seal - Google Patents

Abstract

The invention relates to a technique for compacting rotary kilns and can be used in the building materials industry. The purpose of the invention is to increase the efficiency of compaction. To do this, inside the sealing rings mounted on the furnace body and the fixed chamber, a cylindrical shell 7, made of sheet metal and fixed against axial movement, is freely positioned. turning. The cylindrical shell 7 is made with a cut along the generatrix and spring-loaded by means of leads 10 cables 11 and springs 12. When the sealing surfaces of spring 12 contact with the cylindrical shell 7 are worn, they automatically unfold it, eliminating the occurrence of a gap between the fixed chamber and the furnace. 2 Il. A A i cl

Description

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The invention relates to the sealing technique of rotary kilns, can be used in the building materials industry and is an improvement to the invention by the author. No. 872923.

The purpose of the invention is to increase the effectiveness of compaction.

FIG. Figure 1 shows the proposed rotary kiln seal, longitudinal section; FIG. 2 is a section A-A in FIG. one,

The seal of the rotary kiln contains a rotary sealing ring fixed on the furnace body 1, cc 2, made with a coating 3 of an antifriction material, such as graphite. A fixed sealing ring 5 with a gland seal 6 is mounted on the fixed chamber 4. Inside the sealing rings 2 and 5 there is a cylindrical shell 7, made of thin sheet metal and fixed from axial movement and rotation with the help of the sleeve 8 and limiter 9.

The cylindrical shell 7 is made with a cut along the formation and spring-loaded by means of the leads 10 of the cables 11 and the springs 12, which are constantly in contact with the stuffing box 6 and the coating 3 of the sealing ring 2.

The inner diameter of the packing 6 and the sealing ring 5 with coating 3 is determined from the condition of excluding contact with the furnace body 1, taking into account its actual curvature, ellipse, and manufacturing inaccuracy.

13759242

The length of the cylindrical shell 7 is selected from the conditions for excluding the exit from contact with the coating 3 of the sealing ring 2 within the axial course of the furnace and the temperature elongations.

The magnitude of the overlap of the cylindrical shell 7 is determined from the condition Q excluding its opening, with allowable wear of the parts that are in contact with the shell.

The compaction of the rotary kiln works as follows.

When the furnace body 1 rotates, the cylindrical shell 7 is constantly in contact with the coating 3 of the sealing ring 2 and the gland seal 6 due to the action of the springs 12 through the cables 11 and the leads 10. When the parts that are in contact with the cylindrical shell are worn due to the action of the springs, the shell 7 is reversed, eliminating the occurrence of a gap between the fixed chamber and the rotary kiln.

The proposed rotary kiln seal eliminates air leaks into the kiln, which results in a reduction in fuel consumption.

Claims (1)

Invention Formula Sealing rotary kiln auth.St. No. 872923, characterized in that, in order to increase the efficiency of compaction, the cylindrical shell is made with a cut along the generatrix and is spring-loaded. AND  / Ljs   W - o FIG.