Off-line fully automatic intelligent sample preparation system

Abstract

The invention discloses an off-line fully automatic intelligent sample preparation system which comprises a first-level crushing unit, a fixed mass splitting unit, a full water splitting unit, a second-level crushing drying unit, a splitting drying unit, a sample preparation crushing unit, an automatic packaging unit, an electrical control unit and a dust removal unit. The first crushing unit, thefixed mass splitting unit, the total splitting unit, the second crushing and drying unit, the splitting and drying unit and the sample preparation and crushing unit are arranged in sequence. According to the off-line fully automatic intelligent sample preparation system, a traditional manual sample preparation method is changed, and the intelligent and automatic control of sample preparation links is realized; and supervision and management of people is changed to maintenance and management of equipment, and the procedural and standardized management work is realized.

Description

technical field [0001] The invention relates to the technical field of coal sample monitoring, in particular to an offline fully automatic intelligent sample preparation system. Background technique [0002] In traditional fuel management, extraction, production, and conversion are the most basic and important three links, which are usually completed manually. On the one hand, this leads to high labor costs and low efficiency, and on the other hand, it also leaves a lot of management loopholes, which is easy to breed rent-seeking space. Especially the sample preparation process is always in a semi-automatic state. Workers usually hold the sampling bucket upside down, which is not only labor-intensive, but also has a long cycle and poor accuracy. The loss of water and fine powder is large, the precision of sample preparation is difficult to guarantee, and bias often occurs. Coal is a complex mixture. The existence of free minerals in coal, the distribution of different part...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the coal samples entering the factory in China adopt the traditional manual sample preparation method, which is difficult to meet the national standard GB / T19494.2-2004 "Mechanized Coal Sampling Part 2: Preparation of Coal Samples" and GB474-2008 "Preparation Method of Coal Samples" " and other standards, the main problems are as follows: 1. The principle of sample preparation process is to obtain sufficient sampling variance and not too large sample volume, and strive to be simple and applicable

The design of the sample preparation program is complex, which will increase the workload and increase the possibility of reduction errors

If the sample preparation procedure is too simple, it will not be able to meet the conditions of particle size and sample volume after reduction, and will also increase the reduction error

However, the manual sample preparation process is arbitrarily large due to the different operating methods of the operator, the degree of mastery of the operating essentials, and the execution of the operation requirements, which affects the reproducibility of sample preparation and makes the sampling results unstable; 2. Sample time reduces water loss and labor intensity. In the process of manual sample preparation, the weighing of reserved samples is often omitted, resulting in uncontrollable weight of reserved samples.

If the amount of sample remaining after shrinking is insufficient, the shrinking error will be increased to reduce the precision of sample preparation; 3. When the performance of sample preparation equipment and appliances does not meet the requirements, it cannot be detected manually, such as deformation of the sieve plate of the crusher, wear of the crushing parts, Make the particle size of the reserved sample too large, reduce the number of particles per unit weight, and affect the representativeness of the reserved sample; 4. In the process of manual sample preparation, before and after each crushing and shrinking, the equipment, utensils and shrinking places must be cleaned. , and in the process of sample preparation, the labor intensity is high, it is difficult to control every link in place, coal samples are easily polluted, which increases the error of sample preparation; 5. The environmental conditions of manual sample preparation are poor, with high dust and high noise , affecting the health of operators;

[0005] To sum up, the current manual sample preparation method is difficult to fully guarantee the quality of sample preparation, difficult to manage, labor-intensive and low-efficiency, which has seriously affected the economy and safety of power production, and it is very easy for both the supply and demand sides A dispute arises

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