WO2016101911A1

WO2016101911A1 - Automatic sample preparation system having moisture pretreatment function

Info

Publication number: WO2016101911A1
Application number: PCT/CN2015/098900
Authority: WO
Inventors: 朱青; 朱先德; 任率
Original assignee: 湖南三德科技股份有限公司
Priority date: 2014-12-27
Filing date: 2015-12-25
Publication date: 2016-06-30
Also published as: CN104483175A

Abstract

An automatic sample preparation system having a moisture pretreatment function comprises a primary treatment unit (1) for preparing total-moisture sub-samples, a secondary treatment unit (2) for preparing a sample for back-checks, and a tertiary treatment unit (3) for preparing an analysis sample, wherein the primary treatment unit (1), the secondary treatment unit (2) and the tertiary treatment unit (3) are sequentially connected; the automatic sample preparation system further comprises a moisture pretreatment unit (4), wherein an output end of the moisture pretreatment unit (4) is connected to an input end of the primary treatment unit (1). The moisture pretreatment unit (4) comprises a moisture detection module (41) and a moisture intervention module (42). A material is directly conveyed to the primary treatment unit (1) after being detected by the moisture detection module (41) or, after being detected, is conveyed to the primary treatment unit (1) after being intervened by the moisture intervention module (42). Because the moisture pretreatment unit (4) is arranged on a front end of the automatic sample preparation system, and the moisture pretreatment unit (4) has both the pretreatment functions of moisture drying and moisture humidification, and accordingly labor intensity is reduced, and the sample preparation efficiency and accuracy and the representativeness of samples are improved.

Description

Automatic sample preparation system with moisture pretreatment function

[Technical Field]

The invention mainly relates to the field of coal sample preparation equipment, and particularly relates to an automatic sample preparation system with moisture pretreatment function.

【Background technique】

For coal quality analysis, it is actually a process of sampling analysis. Coal is a kind of uneven material (particle size, distribution of quality characteristics, etc.). The sampled female parent is generally large (several tens of tons to tens of thousands of tons), and the maximum mass can represent the entire female parent quality and characteristics. The process of representative samples is called “sampling” and there are many methods such as mechanical sampling, manual sampling, and semi-mechanical sampling. There are mandatory standards in each country and sampling must be carried out in accordance with the standards.

After the sample is taken according to the standard, the next process is to prepare the sample. The criterion of the sample preparation process is to gradually reduce the particle size of the sample without reducing the representativeness of the sample, and the quality is gradually reduced until the laboratory test is performed. Particle size and mass (weight) requirements. The sample preparation process generally has processes such as air drying, crushing, shrinking, and milling. Air drying (also can be dried by heating, but the temperature should be less than 50 ° C) process is to reduce the external moisture of the sample, in order to facilitate the normal process of crushing and shrinking. The crushing during the sample preparation process is a process of reducing the particle size of the sample. The shrinking process is a process of representatively reducing the sample. The reduced part of the sample must be representative of the coal quality characteristics of the reduced sample. The shrinking process is also the process of reducing the sample volume during the sample preparation process. The standard stipulates that coal sample loss should not be allowed. Because the sample loss in the non-reduction process (such as pulverized coal loss, vermiculite is selected, etc.) will change the coal quality characteristics of the sample, the selective (not necessarily artificial) loss of the sample is absolutely not allowed in the sample preparation process. .

At present, coal samples are mainly produced into three categories according to national standards: all water samples, stock samples and analytical samples. The particle size and water content of the three types of samples are different, and the amount to be supplied is also different, such as the particle size. The 13mm full moisture sample shall be provided with not less than 1.25 kg, the sample with a particle size of 3 mm shall be provided with not less than 0.7 kg, and the sample with a particle size of 0.2 mm shall be provided with not less than 60 g. After different coal samples are made, in order to ensure the reliability of the samples, different sample samples should be packaged separately for use in subsequent sample analysis.

In order to ensure the effective operation of the automatic sample preparation system, the moisture content of the sample entering the sample preparation system needs to be pretreated. For the current moisture pretreatment work, there are the following problems:

(1) Using manual experience to judge the moisture content of the sample, the labor intensity is high, the efficiency is low, and the artificial intervention in each link is prone to fraud.

(2) There is a high probability of misjudgment when judging the moisture content of the sample by experience. Misjudgment causes the sample to stick or the device jams, resulting in sample loss or equipment damage.

(3) At present, only the samples with high water content are pretreated, and the samples with low water content are not pretreated, and the samples with high water content are pretreated by screening large particles before sample preparation. The sieve is suspended, and the sieve is separately crushed and then mixed with the sieve to continue the subsequent sample preparation. The way of sifting and then breaking can only improve the moisture adaptability of the equipment, and can not completely solve the water adaptability of the equipment.

[Summary of the Invention]

The technical problem to be solved by the present invention is that, in view of the problems existing in the prior art, an automatic water remediation function with low labor intensity, high work efficiency, easy human intervention, and moisture drying or moisture humidification is provided. Sample preparation system.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

An automatic sample preparation system with moisture pretreatment function comprises a primary processing unit, a secondary processing unit and a tertiary processing unit connected in sequence, wherein the primary processing unit samples the materials and obtains a whole water sample respectively And the first sample preparation material to be processed by the secondary processing unit, the secondary processing unit samples the first sample to be sampled and separately obtains the sample for checking and the second processing for the third processing unit For the sample preparation material, the tertiary processing unit samples the second sample to be sampled and obtains an analysis sample, and further includes a moisture pretreatment unit, an output of the moisture pretreatment unit and an input of the primary processing unit. The moisture pretreatment unit comprises a moisture detecting module and a moisture intervention module, and the material is directly sent to the primary processing unit after being detected by the moisture detecting module, or is detected by the moisture intervention module and then transported to the first level. Processing unit.

As a further improvement of the present invention, the moisture intervention module includes a drying device for rapidly drying the high moisture material detected by the moisture detecting module.

As a further improvement of the present invention, the moisture intervention module further includes a humidifying device for hydrating and humidifying the low moisture material detected by the moisture detecting module.

As a further improvement of the present invention, the moisture detecting module includes a moisture detecting sensor.

As a further improvement of the present invention, the drying device is a wind-through type quick dryer.

As a further improvement of the present invention, the moisture pretreatment unit further includes a transport module, and the moisture pretreatment unit is connected to the primary processing unit through the transport module.

The advantages of the present invention over the prior art are:

1. The automatic sample preparation system with moisture pretreatment function of the invention has a moisture pretreatment unit at the front end of the automatic sample preparation system, which greatly reduces the labor intensity and greatly improves the sample preparation efficiency.

2. The automatic sample preparation system with moisture pretreatment function of the invention greatly improves the precision of moisture determination, and has the pretreatment function of moisture drying or moisture humidification, so that the sample does not have excessive moisture content, which leads to the sample preparation process. Adhesive loss or mixing, no damage to the equipment due to clogging, and no moisture content of the sample is too small, resulting in follow-up The dust hazard is generated during the sample process, which can minimize the sample loss and the strongest representative. At the same time, there is no dust pollution, which effectively protects the health of the operator.

3. The automatic sample preparation system with moisture pretreatment function of the invention, the whole sample preparation system is automated, no manual on-site intervention is needed, and the occurrence of artificial fraud is avoided, which greatly improves the accuracy and representativeness of the sample.

[Description of the Drawings]

1 is a schematic view showing the structure of an automatic sample preparation system having a moisture pretreatment function according to the present invention.

Fig. 2 is a schematic view showing the structure of the present invention in the state of moisture detecting operation in the embodiment.

Fig. 3 is a schematic view showing the structural principle of the material transporting state after moisture pretreatment in the embodiment of the present invention.

illustration:

1. First-stage processing unit; 11. Pre-crushing device; 12. First-stage quantitative reduction device; 13. First-stage fixed ratio reduction device; 14. First-stage crushing device; 2. Second-level processing unit; Grading ratio reduction device; 22, secondary drying device; 3, tertiary processing unit; 31, milling device; 4, moisture pretreatment unit; 41, moisture detection module; 411, moisture detection sensor; Module; 421, drying device; 422, humidifying device; 43, conveying module.

【detailed description】

The present invention will be further described in detail below in conjunction with the specific embodiments and the accompanying drawings.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the present invention provides an automatic sample preparation system with a moisture pretreatment function, comprising a primary processing unit 1, a secondary processing unit 2 and a tertiary processing unit 3 connected in sequence. The primary processing unit 1 processes the materials and obtains a total moisture sample and a first sample to be sampled for processing by the secondary processing unit 2, and the secondary processing unit 2 will first sample the materials to be sampled. Performing a sample preparation process and separately obtaining a sample to be sampled and a second sample to be sampled for processing by the tertiary processing unit 3, and the tertiary processing unit 3 processes the sample to be sampled and obtains an analysis sample. A moisture pretreatment unit 4 is further included, the output of the moisture pretreatment unit 4 is connected to the input end of the primary treatment unit 1, and the moisture pretreatment unit 4 includes a moisture detection module 41 and a moisture intervention module 42. The moisture detecting module 41 is directly sent to the primary processing unit 1 after being detected, or is detected by the moisture intervention module 42 and then sent to the primary processing unit 1.

When the material needs to enter the automatic sample preparation system for sample preparation, the material first enters the moisture pretreatment unit 4, and the moisture detection module 41 in the moisture pretreatment unit 4 detects the moisture content of the material. When the moisture content detection result of the material is suitable for entering the primary processing unit 1 of the subsequent sample processing for sample preparation, the material is directly sent to the primary processing unit 1 for subsequent sample preparation; when the moisture content of the material is not detected When the primary processing unit 1 suitable for entering the subsequent sample preparation process performs sample preparation, in order to avoid affecting the subsequent sample processing unit, the material will be subjected to moisture intervention by the moisture intervention module 42 until it is suitable to enter the subsequent unit, and the material is Delivery to primary treatment unit 1 for subsequent sample preparation. The moisture pretreatment unit 4 is provided at the front end of the automatic sample preparation system, and no human worker is required to judge The moisture content of the material greatly reduces the labor intensity, greatly improves the sample preparation efficiency, and avoids the occurrence of artificial fraud, greatly improving the accuracy and representativeness of the sample.

In the present embodiment, the primary processing unit 1 includes a pre-crushing device 11, a first-stage quantitative reducing device 12, a primary-ratio reduction device 13, and a primary crushing device 14. The material entering the primary processing unit 1 passes through the pre-crushing of the pre-crushing device 11, the constant mass reduction of the primary quantitative reducing device 12, and the fixed ratio reduction of the first-order proportional reduction device 13, and a part of the material. It is made into a whole moisture sample and output to form a first type of qualified sample, and the other part is divided into a first-stage crushing device 14 after being fractionated by the first-order ratio reducing device 13, and is crushed by the primary crushing device 14. A part of the material is prepared into the first sample to be sampled for the sample processing of the secondary processing unit 2. In the sample preparation process of this level, the whole moisture sample of different specifications can be produced according to the actual needs and the combination form of the sample preparation equipment of the same level. If other combinations are adopted, as long as the requirements for producing the whole moisture sample can be satisfied. All should fall within the scope of protection of the present invention.

In this embodiment, the secondary processing unit 2 includes a secondary scaling device 21 and a secondary drying device 22, and the first sample to be processed entering the secondary processing unit 2 passes through the secondary scaling device 21 After the ratio is reduced, a part of the material is made into a sample and output to form a second type of qualified sample, and the other part is divided into the secondary drying device 22 by the second-order ratio reducing device 21, and the material enters the secondary drying device 22, After the drying of the secondary drying device 22, a portion of the material is prepared into a second sample to be sampled for the tertiary processing unit 3. In this level of sample preparation, according to the actual needs and combined with the combination of the sample preparation equipment of this level to produce different types of inspection samples, such as the use of other combinations, as long as they can meet the requirements for the production of the sample All should fall within the scope of protection of the present invention.

In this embodiment, the three-stage processing unit 3 includes a powder making device 31. After the second sample material to be processed into the third-stage processing unit 3 is subjected to the milling by the powder making device 31, a part of the material is made into an analysis sample and output. Form a third type of qualified sample. In this level of sample preparation, the analysis samples of different specifications can be produced according to the actual needs and combined with the combination of the sample preparation equipment of this level. If other combinations are used, as long as they can meet the requirements for making the analysis samples, It should fall within the scope of protection of the present invention.

In the present embodiment, the moisture intervention module 42 includes a drying device 421 for rapidly drying the high moisture material detected by the moisture detecting module 41. The sample will not be damaged due to excessive moisture content, resulting in adhesion or sample mixing during the sample preparation process, and will not damage the equipment due to clogging.

In the present embodiment, the moisture intervention module 42 further includes a humidifying device 422 for hydrating and humidifying the low moisture material detected by the moisture detecting module 41. Therefore, the moisture content of the sample will not be too small, resulting in dust damage during the subsequent sample preparation process, which can minimize the sample loss, the strongest representative, and no dust pollution, effectively protecting the health of the operator.

In the present embodiment, the moisture detecting module 41 includes a moisture detecting sensor 411.

In the present embodiment, the drying device 421 is a wind-through type quick dryer. Low temperature air drying technology, can be used at low temperatures Under the state (without affecting the physical properties of the sample), the pretreatment is completed quickly and efficiently, so that the coal samples of different coal types and different wet and dry degrees meet the requirements of automatic sample preparation, so that the whole system does not stick coal, does not block coal, and runs smoothly.

In the present embodiment, the moisture pretreatment unit 4 further includes a delivery module 43 that is connected to the primary treatment unit 1 via the delivery module 43. As shown in FIG. 3, after the moisture pretreatment unit 4 completes the pretreatment of the material, the material is sent to the primary processing unit 1 through the delivery module 43 to start sample preparation.

The above is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, and all the technical solutions under the inventive concept belong to the protection scope of the present invention. It should be noted that a number of improvements and modifications without departing from the principles of the invention are considered to be within the scope of the invention.

Claims

An automatic sample preparation system with a moisture pretreatment function, comprising: a primary processing unit (1), a secondary processing unit (2) and a tertiary processing unit (3) connected in sequence, the primary processing The unit (1) prepares the materials and separately obtains the whole moisture sample and the first sample to be sampled for processing by the secondary processing unit (2), and the secondary processing unit (2) will prepare the first sample to be sampled. The material is sample-prepared and separately sampled and used for processing the second sample to be processed by the tertiary processing unit (3), and the third-stage processing unit (3) processes the second sample to be sampled And obtaining an analysis sample, further comprising a moisture pretreatment unit (4), the output end of the moisture pretreatment unit (4) being connected to the input end of the primary treatment unit (1), the moisture pretreatment unit (4) comprising The moisture detecting module (41) and the moisture intervention module (42) are directly sent to the primary processing unit (1) after being detected by the moisture detecting module (41), or intervened by the moisture intervention module (42) after the detection. It is then sent to the primary processing unit (1).
The automatic sample preparation system with moisture pretreatment function according to claim 1, wherein the moisture intervention module (42) comprises a drying device (421), and the drying device (421) is used for a moisture detecting module. (41) The detected high moisture material is quickly dried.
The automatic sample preparation system with moisture pretreatment function according to claim 2, wherein the moisture intervention module (42) further comprises a humidification device (422) for detecting moisture The low moisture material detected by the module (41) is hydrated and humidified.
The automatic sample preparation system with moisture pretreatment function according to claim 3, wherein the moisture detecting module (41) comprises a moisture detecting sensor (411).
The automatic sample preparation system with moisture pretreatment function according to claim 4, wherein the drying device (421) is a wind-through type quick dryer.
The automatic sample preparation system with moisture pretreatment function according to any one of claims 1 to 5, characterized in that the moisture pretreatment unit (4) further comprises a delivery module (43), the moisture pretreatment unit (4) Connected to the primary processing unit (1) via the transport module (43).