Sealing device for ash discharge conical hopper of Maerz kiln

Abstract

The invention discloses a sealing device for an ash discharge conical hopper of a Maerz kiln, and relates to the technical field of furnaces and kilns. The sealing device comprises the ash discharge conical hopper arranged above an ash discharge flat plate, and a steel foundation base plate for supporting refractory bricks in a kiln shell, the top of the ash discharge conical hopper is at least 5cm higher than the steel foundation base plate in the vertical height; the joint of the ash discharge conical hopper and the steel foundation base plate is subjected to full-length welding; a pluralityof triangular rib plates are welded to the connecting arc surface of the ash discharge conical hopper and the steel foundation base plate at intervals; a gap formed by the ash discharging conical hopper, the steel foundation base plate and the kiln shell is filled with castable; the castable completely covers the back welding point of the welding part of the ash discharge conical hopper and the steel foundation base plate and the triangular rib plates; and the refractory bricks are built on the hardened castable. According to the sealing device, the problems that an existing sealing structureof the ash discharging conical hopper of the Maerz kiln is prone to cracking, air leakage is generated, maintenance is difficult, and normal production of the kiln is greatly affected are solved.

Description

technical field [0001] The invention relates to the technical field of kiln production, in particular to a sealing device for an ash discharge conical hopper in a Maerz kiln. Background technique [0002] The Maerz kiln has two chambers, one for heat storage and the other for calcination. Change direction every 14 minutes or so. During the changeover period, the hydraulic valve acts to release the kiln pressure, and at the same time change the position of the gate to realize the conversion between the calcining chamber and the heat storage chamber. In the calcination chamber, the gas is pressurized by a pressurizer, sent into the calcination chamber from 33 spray guns, and mixed with the combustion-supporting air from the upper part of the kiln for combustion. The flue gas generated by calcination flows to the heat storage chamber through the annular passage and the middle passage, and flows upward under the action of the cooling wind from bottom to top to store heat for th...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a Maerz kiln ash discharge conical hopper sealing device, which can solve the existing Maerz kiln ash discharge cone The sealing structure of the shaped hopper is easy to crack, resulting in air leakage and difficult maintenance, which greatly affects the normal production of the kiln

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