Motor-driven type rotary kiln direct temperature measuring device

Abstract

The invention relates to the rotary kiln temperature measurement technical field, and provides a motor-driven type rotary kiln direct temperature measuring device comprising a linear motor, a thermocouple and a sleeve pipe arranged outside the thermocouple; the linear motor is connected with a first end of the thermocouple, and a second end of the thermocouple extends into a temperature measurement through hole arranged in a side wall of the rotary kiln; the thermocouple and the sleeve pipe are driven by the linear motor so as to make reciprocating motions along an axial direction of the temperature measurement through hole; the sleeve pipe is provided with a temperature measurement thin hole used for realizing thermocouple temperature measurement. The motor-driven type rotary kiln direct temperature measuring device uses the linear motor to drive the sleeve pipe and the thermocouple, so the sleeve pile and the thermocouple can make moves in the temperature measurement through hole at certain period in a radial direction of the rotary kiln in a rotary process of the rotary kiln, thus automatically removing material entering the temperature measurement through hole, preventing material pieces from blocking the temperature measurement through hole, and ensuring life and temperature measurement precision of the thermocouple.

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 of a motor-driven 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 method use rotar...

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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