Coal sample stir-mixing and drying device

Abstract

The invention discloses a coal sample stir-mixing and drying device which includes: a lifting apparatus, a stirrer, a heating kettle, a sample cylinder and a controller. The stirrer is disposed on the lifting apparatus which drives the stirrer to move vertically. The heating kettle is disposed on the lifting apparatus. The sample cylinder is disposed inside the sample cylinder. The controller is connected to the heating kettle and the lifting apparatus. The stirrer comprises a stirring motor, a stirring shaft and a plurality of stirring rods, wherein the stirring motor is connected to the stirring shaft to drive the stirring shaft to rotate. The stirring rods are disposed on the stirring shaft. The stirring rods and the stirring shaft are arranged in the sample cylinder and are contacted with a coal sample. The coal sample stir-mixing and drying device can achieve integration of quick drying and mixing of the coal sample, can achieve mechanization operation replacing manual operation, can ensure representativeness of the prepared sample, can reduce labor intensity and manual influence factor, can shorten the preparation period of the sample, can increase work efficiency, and can not only achieve an integrated function of drying and mixing but also individually carrying out drying or mixing, thereby achieving multifunction.

Description

technical field [0001] The invention relates to a coal sample stirring and mixing dryer. Background technique [0002] According to the national standard GB474-2008 "Coal Sample Preparation Method", the manual preparation process of coal samples includes procedures such as crushing, mixing, shrinkage and air drying; the coal sample mixing and drying process in the coal sample preparation process is mainly manual operation Mainly. The mixing method mostly adopts the stacking cone mixing method, the splitter method and the tile mixing method. The above methods need to be carried out many times, the procedures are cumbersome, and they are manual operations. There are many human factors and labor intensity. The uniformity of the final sample is poor. , the sample representativeness is poor, which directly affects the final test results. [0003] The artificial drying method is mostly the tile method, which relies on the automatic loss of water to reduce the moisture content in...

AI Technical Summary

Problems solved by technology

When the moisture in the coal sample is high, the drying time of the coal sample is about 20 hours when the ambient temperature is 20°C; when the ambient temperature is 30°C, it takes about 6 hours; when the ambient temperature is 40°C, it takes about 4 hours ; This method results in a long sample preparation period and seriously reduces work efficiency

[0004] Therefore, at present, there is a lack of necessary mixing machinery and equipment in the coal sample preparation process, and the uniformity of the sample cannot be fully guaranteed; in addition, due to the high moisture content of some samples, it takes a long time to air dry to ensure the quality of the sample preparation, resulting in Sample preparation cycle is longer

The important point is that the drying and mixing procedures cannot be carried out at the same time. The current mixing and drying equipment has a single function and complicated procedures, and cannot be applied to some special coal types

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