Massive scaling device and method

Abstract

The application discloses a kind of fixed mass splitting equipment and fixed mass splitting method.The fixed mass splitting equipment includes conveying mechanism, first scraping mechanism, second scraping mechanism, conveying mechanism is used to transport coal sample, first scraping mechanism is used to carry out first uniform material treatment to the coal sample on conveying mechanism and obtains first part coal sample after first uniform material treatment, second scraping mechanism is used to carry out second uniform material treatment to the coal sample on conveying mechanism and after first scraping mechanism processing, and obtains second part coal sample after second uniform material treatment.Scraping is carried out before each time, and uniform material treatment is carried out, so that the coal sample scraped out twice has high uniformity and high representation, and the analysis sample prepared has substantially the same volatile parameter characteristics.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal detection, and particularly relates to a fixed-quality splitting device and a fixed-quality splitting method. BACKGROUND

[0002] In the coal testing technology, only repeatability and reproducibility are usually specified for the determination results, that is, the precision is explicitly specified. However, in order to provide reliable coal quality detection results, not only the precision but also the accuracy needs to be examined. The coal standard sample is one of the most commonly used methods for testing accuracy. Especially under the market economy condition, the coal standard substance will play a special role of "measuring tool", and the periodic use of the coal standard sample to calibrate the instrument and evaluate the test data can find out whether the results of the determination of a certain characteristic index by the laboratory are in a normal state, thereby ensuring the accurate measurement of the coal quality. The sample preparation process is the primary factor for ensuring the quality of the coal standard sample. Since the coal is an extremely uneven and various organic mineral rock, various organic and inorganic components are mixed therein, and the uneven degree of the various components is also different, therefore, the key problem of sample preparation is how to improve the uneven characteristics of the raw coal. In order to make the uniformity of the coal standard sample meet the use requirements and facilitate the preparation, each type of coal standard sample needs to be prepared at one time, and the quantity stored also needs to be able to maintain the use for many years. Because it is difficult to prepare another batch of coal standard substance with the same composition and properties when a batch of coal standard substance is used up, the fixed-quality splitting of the coal standard sample is the most critical procedure of sample preparation.

[0003] However, the traditional fixed-quality splitting includes two-stage scraping, the coal sample scraped out at the first stage is used for sample preparation, and the coal sample scraped at the second stage is used as a standby sample. After the first-stage scraping, the coal sample is not recombined and stirred, and the second-stage scraping is followed. The traditional scraping only needs to ensure that the second-stage scraper is not empty and the weights of the coal samples scraped by the two scrapers are basically equal, and the uniformity and representativeness of the scraped coal sample are not paid much attention to. SUMMARY

[0004] The technical problem solved by the present application is how to provide a fixed-quality splitting device and method for improving the uniformity and representativeness of the coal standard sample.

[0005] The present application discloses a fixed-quality splitting device, which comprises:

[0006] A conveying mechanism for transporting the coal sample;

[0007] A first scraping mechanism for performing first uniform treatment on the coal sample on the conveying mechanism and scraping a first part of the coal sample after the first uniform treatment;

[0008] A second scraping mechanism is arranged to perform a second uniform treatment on the coal sample on the conveying mechanism and processed by the first scraping mechanism, and to scrape a second part of the coal sample after the second uniform treatment.

[0009] Optionally, the first scraping mechanism and the second scraping mechanism are arranged in series along the conveying direction of the conveying mechanism.

[0010] Optionally, the first scraping mechanism comprises a first uniform device and a first scraper, the first uniform device and the first scraper are arranged in series along the conveying direction of the conveying mechanism, the first uniform device is arranged to perform a first uniform treatment on the coal sample, and the first scraper is arranged to scrape a first part of the coal sample from the coal sample after the first uniform treatment.

[0011] Optionally, the first uniform device is arranged in series along the conveying direction of the conveying mechanism.

[0012] Optionally, the first scraper is arranged to scrape the first part of the coal sample from the coal sample after the first uniform treatment along a direction perpendicular to the conveying direction of the conveying mechanism.

[0013] Optionally, the second scraping mechanism comprises a second uniform device and a second scraper, the second uniform device and the second scraper are arranged in series along the conveying direction of the conveying mechanism, the second uniform device is arranged to perform a second uniform treatment on the coal sample, and the second scraper is arranged to scrape a second part of the coal sample from the coal sample after the second uniform treatment.

[0014] Optionally, the second scraper is arranged to scrape the second part of the coal sample from the coal sample after the second uniform treatment along a direction perpendicular to the conveying direction of the conveying mechanism.

[0015] Optionally, the conveying mechanism is a conveying belt, a width of a part of the conveying belt between the first scraping mechanism and the second scraping mechanism is a first width, a width of other parts of the conveying belt is a second width, and the first width is less than the second width.

[0016] Optionally, the second uniform device is arranged on the part of the conveying belt with the first width, and the second scraper is arranged on the part of the conveying belt with the second width.

[0017] The application further discloses a method for constant mass splitting, which comprises:

[0018] transporting the coal sample by using a conveying mechanism;

[0019] The first scraping mechanism is used to uniformly treat the coal sample on the conveying mechanism for the first time, and a first part of the coal sample is scraped after the first time of uniform treatment;

[0020] The second scraping mechanism is used to uniformly treat the coal sample on the conveying mechanism and treated by the first scraping mechanism for the second time, and a second part of the coal sample is scraped after the second time of uniform treatment.

[0021] The disclosed fixed-quality splitting device and fixed-quality splitting method have the following technical effects:

[0022] The coal sample scraped before and after the uniform treatment has high uniformity and high representativeness, and the analysis sample prepared has substantially the same volatile parameter characteristics. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the fixed-quality splitting device of the embodiment one of the present application;

[0024] Figure 2 The figure is a schematic diagram of the fixed-quality splitting device of the embodiment one of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0026] Before describing the various embodiments of the present application in detail, first, the technical concept of the present application is briefly described: in the prior art fixed-quality splitting process, when two-stage scraping is performed, the coal sample is usually not uniformly treated, resulting in poor uniformity and representativeness of the scraped coal sample. Therefore, the fixed-quality splitting device and fixed-quality splitting method provided by the present application uniformly treat the coal sample on the conveying mechanism for the first time by the first scraping mechanism and scrape a first part of the coal sample, uniformly treat the coal sample for the second time by the second scraping mechanism, and scrape a second part of the coal sample after the second time of uniform treatment. The uniform treatment is performed before the two times of scraping, thereby improving the uniformity and representativeness of the scraped coal sample.

[0027] Specifically, as Figure 1As shown, the constant mass dividing device of the first embodiment includes a conveying mechanism 100, a first scraping mechanism 200 and a second scraping mechanism 300. The conveying mechanism 100 is used for transporting the coal sample, the first scraping mechanism 200 is used for carrying out the first uniform treatment on the coal sample on the conveying mechanism 100 and scraping the first part of the coal sample after the first uniform treatment, and the second scraping mechanism 300 is used for carrying out the second uniform treatment on the coal sample on the conveying mechanism 100 and treated by the first scraping mechanism 200 and scraping the second part of the coal sample after the second uniform treatment.

[0028] Exemplarily, the first scraping mechanism 200 and the second scraping mechanism 300 are arranged along the conveying direction of the conveying mechanism 100, and the arrow direction represents the conveying direction. As a preferred embodiment, the conveying mechanism 100 adopts a conveying belt. Wherein, the coal sample to be detected is treated by a crusher to obtain a coal sample with a particle size of 6mm, and then the crushed coal sample is sent to the constant mass dividing link, that is, transported to the conveying mechanism 100, and then transported to the first scraping mechanism 200 and the second scraping mechanism 300 in turn by the conveying mechanism.

[0029] Further, the first scraping mechanism 200 includes a first uniform device 201 and a first scraper 202, and the first uniform device 201 and the first scraper 202 are arranged along the conveying direction of the conveying mechanism 100 in turn. The first uniform device 201 is used for carrying out the first uniform treatment on the coal sample, and the first scraper 202 is used for scraping the first part of the coal sample from the coal sample after the first uniform treatment.

[0030] Exemplarily, the number of the first uniform device 201 is two, and the two first uniform devices 201 are arranged along the conveying direction of the conveying mechanism 100 in turn. After the coal sample on the conveying belt is flattened, stirred and shaped by the first first uniform device 201, it continues to be stirred by the second first uniform device 201, and a relatively uniform coal sample can be obtained. Of course, in other embodiments, the number of the first uniform device 201 can also be set to three, four or more, and the specific number can be set according to actual needs.

[0031] Exemplarily, as shown in Figure 2 The first scraper 201 is used for scraping the first part of the coal sample from the coal sample after the first uniform treatment along the vertical direction of the conveying direction of the conveying mechanism 100. Wherein, the vertical direction of the first embodiment refers to the width direction of the conveying belt. Since the scraping is carried out in the vertical direction during the transportation of the coal sample by the conveying belt, an inclined scratch S is formed after each scraping is completed.

[0032] Further, the second scraping mechanism 300 comprises a second uniformizing device 301 and a second scraper 302, which are arranged in sequence along the conveying direction of the conveying mechanism 100, the second uniformizing device 301 is used for performing second uniformizing treatment on the coal sample, and the second scraper 302 is used for scraping the second part of the coal sample from the coal sample after the second uniformizing treatment. Since the first scraping forms a scraping mark, the coal sample is not uniform at this time, and after the second uniformizing device 301 is used for flattening, stirring and shaping again, a more uniform coal sample can be obtained after the second uniformizing treatment, and then the second scraper 302 is used for second scraping, and a second part of the coal sample with higher uniformity and representativeness can be obtained.

[0033] Exemplarily, the second scraper 302 is used for scraping the first part of the coal sample from the coal sample after the second uniformizing treatment along the vertical direction of the conveying direction of the conveying mechanism 100. The vertical direction mentioned in the first embodiment is the width direction of the conveying belt. Since the scraping in the vertical direction is performed during the conveying of the coal sample by the conveying belt, an inclined scraping mark S is formed after each scraping.

[0034] Further, the width of the part of the conveying belt between the first scraping mechanism and the second scraping mechanism is a first width H1, and the width of the other part of the conveying belt is a second width H2, and the first width H1 is less than the second width H2. After the first scraping by the first scraper 201, the coal sample is reduced, so that the coal sample can be recombined by reducing the width of the coal flow, which is beneficial to obtain a more uniform coal sample.

[0035] Exemplarily, the second scraper 302 is arranged on the part of the conveying belt with the second width H2, and the second uniformizing device 301 is arranged on the part of the conveying belt with the first width H1. After the coal sample with reduced width of the coal flow is flattened, stirred and shaped by the second uniformizing device 301, the uniformity and representativeness of the coal sample can be further improved.

[0036] Exemplarily, the weight of the first part of the coal sample and the second part of the coal sample obtained after the two times of scraping can be adjusted by setting the scraping speed and the scraping depth of the scraper, and the weight of the first part of the coal sample and the second part of the coal sample can be set to be the same, for example, both are set to 5KG. Of course, in other embodiments, the weight of the first part of the coal sample and the second part of the coal sample can be set according to actual needs.

[0037] The second embodiment also discloses a constant-quality splitting method, which comprises the following steps:

[0038] Step S10, conveying the coal sample by using the conveying mechanism 100;

[0039] Step S20, using the first scraping mechanism 200 to carry out the first uniform treatment on the coal sample on the conveying mechanism 100 and scraping the first part of the coal sample after the first uniform treatment;

[0040] Step S30, using the second scraping mechanism 300 to carry out the second uniform treatment on the coal sample on the conveying mechanism 100 and after the first scraping mechanism 200 treatment, and scraping the second part of the coal sample after the second uniform treatment.

[0041] Wherein, the more detailed process of step S10, step S20 and step S30 can refer to the related description of embodiment one. As one of the implementation manners, the specific process of the constant mass division method is as follows:

[0042] The conveying mechanism 100 adopts a conveying belt to transport the coal sample obtained after the crushing treatment. After the coal sample on the conveying belt is flattened, stirred and shaped by the two first uniform devices 201, a more uniform coal sample is obtained. The first scraper 201 is used to carry out the first scraping to obtain the first part of the coal sample. Then, the coal flow width is reduced by the part of the belt with the first width H1 on the conveying belt, so that the coal sample is recombined. The second uniform device 301 is used to carry out the flattening, stirring and shaping again to obtain a more uniform coal sample. Finally, the second scraper 302 is used to carry out the second scraping to obtain the second part of the coal sample with high uniformity and representativeness, and the sampling is completed.

[0043] The constant mass division device and the constant mass division method disclosed in embodiment one and embodiment two have high uniformity and high representativeness of the coal sample scraped before and after, and the analysis sample prepared has basically the same volatile parameter characteristics.

[0044] The specific embodiments of the present application are described in detail above, although some embodiments have been shown and described, those skilled in the art should understand that the embodiments can be modified and improved without departing from the principles and spirits of the present application limited by the claims and their equivalents, and these modifications and improvements should also be within the protection scope of the present application.

Claims

1. A constant mass division apparatus, characterized by, The constant-quality dividing device comprises: a conveying mechanism for transporting the coal sample; a first scraping mechanism for performing first uniform treatment on the coal sample on the conveying mechanism and scraping a first part of the coal sample after the first uniform treatment; a second scraping mechanism for performing second uniform treatment on the coal sample on the conveying mechanism and treated by the first scraping mechanism, and scraping a second part of the coal sample after the second uniform treatment; the first scraping mechanism and the second scraping mechanism are arranged at intervals along the conveying direction of the conveying mechanism; the conveying mechanism is a conveying belt, the width of the part of the conveying belt between the first scraping mechanism and the second scraping mechanism is a first width, and the width of the other part of the conveying belt is a second width, the first width being smaller than the second width.

2. The mass scaling device of claim 1, wherein, The first scraping mechanism comprises a first uniform device and a first scraper, which are arranged at intervals along the conveying direction of the conveying mechanism in sequence, the first uniform device being used for performing first uniform treatment on the coal sample, and the first scraper being used for scraping a first part of the coal sample from the coal sample after the first uniform treatment.

3. The mass scaling device of claim 2, wherein, The number of the first uniform devices is two, and the two first uniform devices are arranged at intervals along the conveying direction of the conveying mechanism in sequence.

4. The mass scaling device of claim 2, wherein, The first scraper is used for scraping a first part of the coal sample from the coal sample after the first uniform treatment along the vertical direction of the conveying direction of the conveying mechanism.

5. The mass scaling device of claim 1, wherein, The second scraping mechanism comprises a second uniform device and a second scraper, which are arranged at intervals along the conveying direction of the conveying mechanism in sequence, the second uniform device being used for performing second uniform treatment on the coal sample, and the second scraper being used for scraping a second part of the coal sample from the coal sample after the second uniform treatment.

6. The mass scaling device of claim 5, wherein, The second scraper is used for scraping a second part of the coal sample from the coal sample after the second uniform treatment along the vertical direction of the conveying direction of the conveying mechanism.

7. The mass scaling device of claim 5, wherein, The second uniform device is arranged on the part of the conveying belt with the first width, and the second scraper is arranged on the part of the conveying belt with the second width.

8. A mass-doubling method applied to the mass-doubling apparatus according to any one of claims 1 to 7, characterized by, The constant-quality dividing method comprises: transporting the coal sample by using a conveying mechanism; performing first uniform treatment on the coal sample on the conveying mechanism by using a first scraping mechanism and scraping a first part of the coal sample after the first uniform treatment; performing second uniform treatment on the coal sample on the conveying mechanism and treated by the first scraping mechanism by using a second scraping mechanism, and scraping a second part of the coal sample after the second uniform treatment.

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