Floating sealing device of pyrolysis rotary kiln

Abstract

The invention discloses a floating sealing device of a pyrolysis rotary kiln. The device is arranged on a rotary kiln cylinder body outer edge at the joint of a rotary kiln cylinder body and a fixed cover shell, and comprises a sealing seat ring, a gland, a spiral spring system, a packing, a plurality of spring steel sheets, a plurality of bolts, a plurality of screws, a plurality of nuts and a tensioning device; the sealing seat ring is arranged on the rotary kiln cylinder body outer edge through an inner ring; the sealing seat ring and an annular boss end part of the gland form an annular space on the rotary kiln cylinder body outer edge; the gland is connected with the sealing seat ring through the spiral spring system; the packing is arranged in the annular space formed by the sealingseat ring and the gland on the rotary kiln cylinder body outer edge; and the two ends of a steel wire rope of the tensioning device penetrate through through holes and then are respectively arranged around a fixed pulley block. The floating sealing device of the pyrolysis rotary kiln is compact in structure, high in matching degree, remarkable in sealing effect, capable of meeting working condition factors such as radial runout, high temperature, positive pressure, inflammable and explosive gas and wide in application range.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry for producing coal gas, tar and semi-coke by medium-low temperature pyrolysis of low-rank pulverized coal, in particular to a floating sealing device for a pyrolysis rotary kiln. Background technique [0002] Low-rank coal gas, tar, and semi-coke are cleaned and utilized through low-temperature pyrolysis of low-rank coal, which solves the shortcomings of low-rank coal that cannot be directly used, such as high moisture content, easy pulverization, and high volatile matter. [0003] The cylinder of the pyrolysis rotary kiln is a horizontal cylinder rotating structure with a diameter of generally 2~8m. The inside of the cylinder is flammable and explosive alkane gas. The sealing requirements between the rotating cylinder and the fixed discharge and gas outlet cover are not allowed Leakage, due to the roundness of the cylinder itself and the deflection during operation, the periodic ra...

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Problems solved by technology

[0005] In order to solve the above problems, the purpose of the present invention is to provide a floating sealing device for pyrolysis rotary kiln, which solves the leakage problem between the fixed cover shell and the rotary kiln shell caused by the spring back of the packing of the sealing device, and can adapt to the rotary kiln shell. Radial runout, high temperature, positive pressure, flammable and explosive gas and other working conditions

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