Self-weight rotary kiln direct temperature measurement device

Abstract

The invention relates to the technical field of rotary kiln temperature measurement, and provides a self-weight rotary kiln direct temperature measurement device. The self-weight rotary kiln direct temperature measurement device comprises a counterweight box, a thermocouple, restraint rods of which the first ends are fixedly mounted on the side wall of a rotary kiln, and a sleeve tube which is arranged on the outer side of the thermocouple; a plurality of restraint pipelines are arranged in the counterweight box; the second ends of the restraint rods are limited in the restraint pipelines; the counterweight box is connected with the first end of the thermocouple; the second end of the thermocouple extends into a temperature measuring through hole which is formed in the side wall of the rotary kiln; the sleeve tube is connected with the counterweight box or the thermocouple and can move axially along the temperature measuring through hole; thin temperature measuring slim holes used for realizing thermocouple temperature measuring are formed in the sleeve tube. According to the device, the counterweight box drives the thermocouple and the sleeve tube to move in the temperature measuring through hole along the radial direction of the rotary kiln during the rotating process of the rotary kiln under the automatic action of the counterweight box, so that the sleeve tube can clean the materials in the temperature measuring through hole automatically, and the temperature measuring through hole is prevented from being blocked by a material tumor; therefore, the service life and the temperature measurement accuracy 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 self-weight rotary kiln direct temperature measurement device. 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 rotary kiln...

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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