A direct temperature measuring device for eccentric slip ring rotary kiln

Abstract

The invention relates to the technical field of rotary kiln temperature measurement, and provides a direct temperature measuring device for an eccentric slide ring type rotary kiln. The direct temperature measuring device comprises a slide ring unit, a thermocouple and a sleeve pipe arranged at the outer side of the thermocouple, wherein the slide ring unit comprises a fixed annular ring and a thermocouple positioning element; the annular rail is eccentrically arranged on the outer circle of the rotary kiln; the thermocouple positioning element is positioned on the annular rail, can do circumferential movement along the annular rail, and is connected with the first end of the thermocouple; the second end of the thermocouple extends into a temperature measuring through hole formed in the side wall of the rotary kiln; the sleeve pipe is connected with the thermocouple positioning element and / or the thermocouple, and can move along the axial direction of the temperature measuring through hole; a temperature measuring fine hole used for realizing the thermocouple temperature measurement is formed in the sleeve pipe; the sleeve pipe or the thermocouple positioning element is connected with the rotary kiln; in addition, the sleeve pipe, the thermocouple positioning element and the thermocouple respectively rotate together with the rotary kiln. The direct temperature measuring device has the advantages that materials entering the temperature measuring through hole can be automatically cleared, and the blockage of the temperature measuring through hole due to material blocks is avoided, so that the service life and the temperature measuring precision of the thermocouple are ensured.

Description

technical field [0001] The invention relates to the technical field of temperature measurement of a rotary kiln, in particular to a direct temperature measurement device for an eccentric slip ring type rotary kiln. Background technique [0002] Rotary kilns are widely used in various industries. For example, in many production industries such as building materials, metallurgy, chemical industry, and environmental protection, rotary kilns are used for mechanical, physical or chemical treatment of solid materials. Specifically: First, in non-ferrous and ferrous metallurgy, iron, aluminum, copper, zinc, tin, nickel, tungsten, chromium, files and other metals use rotary kilns as smelting equipment to sinter ores, concentrates, intermediates, etc. Roasting. Among them, the rotary kiln is used to roast aluminum hydroxide into alumina in aluminum production; the rotary kiln is used to produce pellets for blast furnace ironmaking in ironmaking; the foreign SL / RN method and Krupp me...

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of the direct temperature measurement method of the rotary kiln are: it is easy to enter the high-temperature powdery material in the temperature measurement through hole, and the semi-molten material is easy to adhere. Once it enters the hole, it will be difficult to pour it out, and it will form a lump Block the temperature measurement through hole, thereby greatly reducing the temperature measurement accuracy

[0008] The shortcomings of the indirect temperature measurement method of the rotary kiln are: poor measurement accuracy, slow response speed, difficult to meet the process requirements, and easily affected by ring formation or lining peeling

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