Spray device for high temperature sinter of sinter ring cooling machine and control method

Abstract

The invention discloses a spray device for high temperature sinter of a sinter ring cooling machine and a control method. The spray device and the control method are used for spraying an inner ring and an outer ring of the ring cooling machine. The spray device comprises a first spray tank and a second spray tank, the first spray tank and the second spray tank are arranged on the ring cooling machine, the first spray tank sprays the outer ring of the ring cooling machine, and the second spray tank sprays the inner ring of the ring cooling machine; a first water pipe injects water to the first spray tank, and a second water pipe injects water to the second spray tank. The spray device is further provided with a first temperature measurement galvanic couple used for detecting the temperature of the outer ring of the ring cooling machine and a second temperature measurement galvanic couple used for detecting the temperature of the inner ring of the ring cooling machine. The spray device further comprises a PLC and a warning device connected with the PLC. The PLC receives signals of the first temperature measurement galvanic couple and the second temperature measurement galvanic couple, controls opening and closing of a first solenoid valve and a second solenoid valve and controls halt of the ring cooling machine. Cooling treatment can be well conducted on the sinter and pellets, and meanwhile spray openings can be conveniently washed.

Description

technical field [0001] The invention relates to a high-temperature sinter spraying device and a control method of a sintering ring cooler. Background technique [0002] At present, in order to prevent the sintered ore whose temperature is higher than the outside temperature after being cooled by the annular cooler from entering the finished product system and burning out the finished product belt, the belt for transporting the finished ore downstream of the ore discharge department of the existing sintering production ring cooler is a high-temperature-resistant belt. The high-temperature-resistant belt can The normal temperature to withstand is 150°C, and the upper limit temperature is 200°C. Although the high-temperature-resistant belt is used, when there is an abnormality in the production of the sintering system unit, such as a failure of the weighing belt, the coke powder ratio suddenly increases sharply, resulting in a "burning red ore" accident. Although it is cooled b...

AI Technical Summary

Problems solved by technology

However, this technology does not take into account that the temperature distribution of the pellets on the ring cooler is more uniform than that of the sinter on the ring cooler, and the opening of the water valve is controlled according to the temperature measured by a single infrared thermometer. The distribution on the machine is uneven, the temperature of the inner ring is often higher than that of the outer ring, and the temperature difference ranges from 30 to 150°C. If the water valve is controlled according to the temperature measured by the single infrared thermometer, it will spray evenly. The temperature of the outer ring is low, and there is excessive spraying, which leads to increased water consumption. At the same time, the over-humid material is likely to cause blockage of the downstream screening system, which affects the screening effect. In addition, the water pipe is installed above the material surface of the ring cooler, and there is a lot of dust. And it is easy to enter the water pipe spray port to accumulate, and the spray port will be blocked slowly, resulting in spray failure, and the blocked port cannot be cleaned conveniently. When a serious high-temperature red ore accident occurs, simple watering often cannot cool the sinter Down, the ring cooler and other equipment continue to operate and unload, and this part of high-temperature sinter enters the downstream product belt, which is prone to fire accidents

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