A self-driven direct temperature measuring device for a rotary kiln

Abstract

The invention relates to the technical field of temperature measurement of a rotary kiln, and provides a self-driven direct temperature measurement device for a rotary kiln. The device includes a rotary drive motor, a screw rod, a fixed mount, a thermocouple and a sleeve tube; the rotary drive motor, the screw rod and the thermocouple are mounted on the fixed mount, and the fixed mount is fixed on a rotary On the side wall of the kiln; the rotary drive motor drives the screw rod to rotate; the sleeve tube is sleeved on the outside of the thermocouple and extends into the temperature measuring through hole opened on the side wall of the rotary kiln; the The outer surface of the sleeve tube is provided with a spiral groove that matches the thread of the screw rod. Driven by the screw rod, the sleeve tube performs periodic reciprocating motion along the axial direction of the temperature measuring through hole . The invention automatically removes the material entering the temperature measuring through hole through the movement of the sleeve tube, avoiding the blockage of the temperature measuring through hole by material lumps, thereby ensuring the service life and temperature measuring accuracy 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 self-driven direct temperature measurement device for a 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

Images