CN112683626A - Preposed online sample preparation and moisture testing device and moisture testing method - Google Patents
Preposed online sample preparation and moisture testing device and moisture testing method Download PDFInfo
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Abstract
The invention discloses a preposed online sample preparation and moisture test device and a moisture test method, wherein the preposed online sample preparation and moisture test device comprises: the primary sub-sample conveying mechanism is used for transmitting the primary sub-sample collected by the material collecting machine to an inlet of the contraction and separation mechanism; the division mechanism is used for dividing the primary sub-sample entering the division mechanism to form a sub-sample to be tested; and the testing mechanism is used for carrying out secondary division on the sub-sample, carrying out moisture test on the divided sample, and recording and processing a test result. In the using process of the preposed online sample preparation and moisture testing device, the subsamples after being reduced do not need to be combined and batched, and the total sample does not need to be reduced, so that the waiting time in the sample combination and batching can be avoided, the waiting time of the subsamples before testing is shortened, the loss of the subsamples moisture in the waiting process is reduced, and the testing accuracy of the preposed online sample preparation and moisture testing device on the moisture content of the subsamples is improved.
Description
Technical Field
The invention relates to the technical field of all-water testing equipment, in particular to a preposed online sample preparation and moisture testing device. In addition, the invention also relates to a moisture testing method applied to the preposed online sample preparation and moisture testing device.
Background
The on-line full water test system is used for on-line detection of coal samples, the traditional on-line full water test system is usually matched with a sample preparation system for use, and the process of full-automatic sample preparation equipment is long, so that the coal sample is tested to generate large water loss in the sample preparation process. The sample preparation system crushes the coal sample to 13mm or 6mm, then reduces the coal sample to a specified sample amount, and then sends the coal sample to the sample preparation system for water content measurement.
In the prior art, no matter automobile sampling or belt sampling, a sample combination and batching process is needed before entering a sample preparation system; the residence time in the process is long (about 4-12 hours), and the moisture in the coal can be evaporated into the air, so that certain moisture loss is caused. So that the measured moisture results are generally low.
The online full water test system in the current market measures the moisture of coal samples in the air atmosphere, and the test range of the coal samples is only limited to bituminous coal and anthracite; lignite is easily oxidized in the air atmosphere, so that the moisture test is low.
In summary, how to improve the testing accuracy of the online all-water testing system is a problem to be urgently solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a pre-online sample preparation and moisture testing apparatus, in the using process, a primary sub-sample is divided into sub-samples, a testing mechanism directly performs secondary division and testing on the sub-samples, and records and processes the testing result, without waiting for the grouping process of the sub-samples, so as to shorten the waiting time before testing, avoid evaporation of moisture in the sub-samples, and improve the accuracy of the pre-online sample preparation and moisture testing apparatus in testing the moisture content of the sub-samples.
The invention also aims to provide a moisture testing method applied to the preposed online sample preparation and moisture testing device.
In order to achieve the above purpose, the invention provides the following technical scheme:
a leading online system appearance and moisture testing arrangement includes:
the primary sub-sample conveying mechanism is used for transmitting the primary sub-sample collected by the material collecting machine to an inlet of the contraction and separation mechanism;
the division mechanism is used for dividing the primary subsample entering the division mechanism to form a subsample to be tested;
and the testing mechanism is used for carrying out secondary division on the sub-sample, carrying out moisture test on the divided sample, and recording and processing a test result.
Preferably, the dividing mechanism is arranged at the upper part of the testing mechanism, a first chute which is used for being connected with an inlet of the testing mechanism is arranged at an outlet of the dividing mechanism, and the subsample enters the testing mechanism through the first chute.
Preferably, the device further comprises a first conveying mechanism for conveying the subsample after division to the testing mechanism, wherein one end of the first conveying mechanism is connected with the division mechanism, and the other end of the first conveying mechanism is connected with the testing mechanism.
Preferably, the device further comprises a crushing mechanism arranged between the dividing mechanism and the testing mechanism, and the crushing mechanism is used for crushing the subsample.
Preferably, the dividing mechanism is arranged at the upper part of the crushing mechanism, and the outlet of the dividing mechanism is arranged opposite to the inlet of the crushing mechanism; the crushing mechanism is arranged on the upper part of the testing mechanism, and the outlet of the crushing mechanism is opposite to the inlet of the testing mechanism.
Preferably, the sample testing device further comprises a second conveying mechanism for conveying the sub-sample after being crushed to the testing mechanism, wherein one end of the second conveying mechanism is connected with an outlet of the crushing mechanism, and the other end of the second conveying mechanism is connected with an inlet of the testing mechanism.
Preferably, the testing device further comprises a nitrogen generating mechanism for providing nitrogen for the testing mechanism, and an air outlet of the nitrogen generating mechanism is communicated with the testing mechanism.
A moisture test method is applied to any one of the pre-online sample preparation and moisture test devices, and comprises the following steps:
the primary sub-sample conveying mechanism transmits the primary sub-sample collected by the material collecting machine to an inlet of the contraction and separation mechanism;
the division mechanism divides the primary sub-sample entering the interior of the division mechanism to form a sub-sample to be tested;
and the testing mechanism performs secondary division on the sub-sample, performs moisture test on the divided sample, and records and processes a test result.
Preferably, after the division mechanism divides the primary subsample entering the division mechanism to form a subsample to be tested, the testing mechanism performs a moisture test on the subsample, and records and processes a test result, including:
and the crushing mechanism is used for crushing the subsample.
Preferably, the crushing mechanism, after crushing the subsample, comprises:
and the second conveying mechanism conveys the subsample after being crushed to the testing mechanism.
In the process of using the preposed online sample preparation and moisture testing device provided by the invention, firstly, a primary sub-sample is conveyed to an inlet of a division mechanism through a primary sub-sample conveying mechanism, the primary sub-sample is divided through the division mechanism to form a sub-sample which can be tested, after the sub-sample enters the testing mechanism, the testing mechanism performs secondary division on the sub-sample, tests the divided sample, and records and processes a test result.
Compared with the prior art, in the using process of the preposed online sample preparation and moisture testing device, the reduced sub-samples do not need to be combined and classified, and the total sample does not need to be reduced, so that the waiting time in the sample combination and classification can be avoided, the waiting time of the sub-samples before testing is shortened, the loss of the sub-samples moisture in the waiting process is reduced, the testing result of the testing mechanism is closer to the actual result, and the testing accuracy of the preposed online sample preparation and moisture testing device on the moisture content of the sub-samples is improved.
In addition, the invention also provides a moisture testing method applied to the preposed online sample preparation and moisture testing device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a first embodiment of a pre-stage on-line sample preparation and moisture testing apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the pre-stage on-line sample preparation and moisture testing device provided by the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the pre-stage on-line sample preparation and moisture testing device provided by the present invention;
FIG. 4 is a schematic structural diagram of a fourth embodiment of the pre-stage on-line sample preparation and moisture testing apparatus according to the present invention;
fig. 5 is a schematic flow chart of an embodiment of a moisture testing method provided by the present invention.
In FIGS. 1-5:
1 is a primary sample conveying mechanism, 2 is a contraction and separation mechanism, 3 is a crushing mechanism, 4 is a second conveying mechanism, 5 is a nitrogen generating mechanism, 6 is a testing mechanism, 7 is a first conveying mechanism, 8 is a second chute and 9 is a first chute.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a preposed online sample preparation and moisture test device, in the using process, a primary sub-sample is divided into sub-samples, a test mechanism directly performs secondary division and test on the sub-samples, records and processes the test result, the process of sub-sample combination and batch grouping is not required to be waited, the waiting time before the test is shortened, the evaporation of moisture in the sub-samples can be avoided, and the accuracy of the preposed online sample preparation and moisture test device in testing the moisture content of the sub-samples is improved.
The other core of the invention is to provide a moisture testing method applied to the preposed online sample preparation and moisture testing device.
Please refer to fig. 1-5; FIG. 1 is a schematic structural diagram of a first embodiment of a pre-stage on-line sample preparation and moisture testing apparatus according to the present invention; FIG. 2 is a schematic structural diagram of a second embodiment of the pre-stage on-line sample preparation and moisture testing device provided by the present invention; FIG. 3 is a schematic structural diagram of a third embodiment of the pre-stage on-line sample preparation and moisture testing device provided by the present invention; FIG. 4 is a schematic structural diagram of a fourth embodiment of the pre-stage on-line sample preparation and moisture testing apparatus according to the present invention; fig. 5 is a schematic flow chart of an embodiment of a moisture testing method provided by the present invention.
This embodiment provides a leading online system appearance and moisture testing arrangement, includes:
the primary sub-sample conveying mechanism 1 is used for transmitting the primary sub-sample collected by the material collecting machine to an inlet of the division mechanism 2;
the division mechanism 2 is used for dividing the primary subsample entering the interior of the division mechanism to form a subsample to be tested;
and the testing mechanism 6 is used for carrying out secondary division on the sub-sample, carrying out moisture test on the divided sample, and recording and processing a test result.
It should be noted that the primary sub-sample conveying mechanism may be a belt conveying mechanism, a guide rail slider conveying mechanism, or a chain conveying mechanism, and the like, which meet the requirements, and is specifically determined according to actual situations, and is not described herein again.
One end of the primary sub-sample conveying mechanism 1 is arranged at the collected primary sub-sample of the sampling machine so that the primary sub-sample can smoothly fall into the primary sub-sample conveying mechanism 1, and the other end of the primary sub-sample conveying mechanism 1 is arranged at the inlet of the division mechanism 2 so that the primary sub-sample can be conveyed to the division mechanism 2.
In the process of using the preposed online sample preparation and moisture testing device provided by the present embodiment, first, the primary sub-sample is conveyed to the inlet of the division mechanism 2 through the primary sub-sample conveying mechanism 1, and the primary sub-sample is divided through the division mechanism 2 to form a sub-sample that can be tested, after the sub-sample enters the testing mechanism 6, the testing mechanism 6 performs secondary division on the sub-sample, tests the sample after the secondary division, and records and processes the test result.
It should be noted that, the recording and processing of the test results mentioned here is to record the moisture content of the sample for each test, and finally to perform weighted average on the results of each test, since the weight of each sample is obtained after division, the difference is not large, so that the moisture content of all the subsamples can be obtained.
Compared with the prior art, in the using process of the preposed online sample preparation and moisture testing device provided by the embodiment, the reduced sub-samples do not need to be subjected to sample combination and batch collection, and the sample combination and batch collection needs to consume 4-6 hours; and the total sample does not need to be divided again, so that the waiting time in sample combination and batch collection can be avoided, the waiting time of the sub-sample before testing is shortened, and the loss of the water of the sub-sample in the waiting process is reduced, so that the testing result of the testing mechanism 6 is closer to the actual result, and the testing accuracy of the preposed online sample preparation and water testing device on the water content of the sub-sample is improved.
In addition to the above embodiment, as shown in fig. 4, the dividing mechanism 2 may be disposed at the upper part of the testing mechanism 6, and the outlet of the dividing mechanism 2 is provided with a first chute 9 for connecting with the inlet of the testing mechanism 6, and the subsample enters the testing mechanism 6 through the first chute 9.
As shown in fig. 4, the primary subsample conveying mechanism 1 conveys the primary subsample to the dividing mechanism 2, the dividing mechanism 2 divides the primary subsample, and conveys the divided subsample to the testing mechanism 6 through the first chute 9.
Preferably, the outlet of the dividing mechanism 2 and the inlet of the testing mechanism 6 can be arranged oppositely, the first chute 9 is arranged vertically, and the subsample can smoothly enter the testing mechanism 6 in the subsample conveying process.
Preferably, the first chute 9 is of a pipe structure with a smooth inner wall.
As shown in fig. 2, when the distance between the dividing mechanism 2 and the testing mechanism 6 is long, a first conveying mechanism 7 for conveying the divided subsamples to the testing mechanism 6 may be further included, and one end of the first conveying mechanism 7 is connected to the dividing mechanism 2, and the other end is connected to the testing mechanism 6.
In the using process, the subsamples after being split by the splitting mechanism 2 are directly conveyed to the testing mechanism 6 through the first conveying mechanism 7, preferably, the first conveying mechanism 7 can comprise a plurality of modules which can be combined randomly, and in the actual setting process, the modules can be combined according to actual needs, so that the first conveying mechanism 7 can be suitable for conveying in any environment or route.
It should be noted that the first conveying mechanism 7 may be a belt conveying mechanism, a guide rail slider conveying mechanism, or a chain conveying mechanism, and the like, which meet the requirements, and is determined specifically according to actual situations, and is not described herein again.
The primary subsample mentioned in the present application document may be a coal sample, or may be other samples to be tested that meet the requirements, and is determined specifically according to the actual situation, and is not described herein any further.
The particle size of the above-mentioned embodiments is consistent with the situation of directly performing the test, and when the particle size of the subsample is large, the crushing mechanism 3 may be provided.
It should be noted that, when the sub-sample is a coal sample, if the particle diameter of the initial sub-sample is greater than or equal to 13mm, the crushing mechanism 3 needs to be set, and when the particle diameter of the initial sub-sample is less than or equal to 6mm, the crushing mechanism 3 does not need to be set, of course, whether the crushing mechanism 3 needs to be set specifically may be determined according to actual situations, and details are not described here.
In the using process, when the distance between the crushing mechanism 3 and the testing mechanism 6 is short, the dividing mechanism 2 can be arranged at the upper part of the crushing mechanism 3, and the outlet of the dividing mechanism 2 is arranged opposite to the inlet of the crushing mechanism 3; the crushing mechanism 3 is arranged on the upper part of the testing mechanism 6, and the outlet of the crushing mechanism 3 is arranged opposite to the inlet of the testing mechanism 6.
The arrangement mode can reduce the occupied space of the whole device, avoid the arrangement of the conveying mechanism, simplify the structure of the whole device and reduce the cost in the use process.
In order to avoid that the subsample is scattered and dust is stirred in the process of entering the testing mechanism 6 from the crushing mechanism 3, a second chute 8 can be arranged at the outlet of the crushing mechanism 3, the other end of the second chute 8 is connected with the inlet of the testing mechanism 6, and the crushed subsample directly enters the testing mechanism 6 along the second chute 8.
Preferably, the second chute 8 can be arranged vertically.
When the distance between the crushing mechanism 3 and the testing mechanism 6 is long, a second conveying mechanism 4 for conveying the crushed subsample to the testing mechanism 6 can be further included, one end of the second conveying mechanism 4 is connected with the outlet of the crushing mechanism 3, and the other end of the second conveying mechanism 4 is connected with the inlet of the testing mechanism 6.
In the using process, the subsample after being crushed by the crushing mechanism 3 is directly conveyed to the testing mechanism 6 through the second conveying mechanism 4, preferably, the second conveying mechanism 4 can comprise a plurality of modules which can be combined at will, and in the actual setting process, the modules can be combined according to actual needs, so that the second conveying mechanism 4 can be suitable for conveying in any environment or route.
It should be noted that the second conveying mechanism 4 may be a belt conveying mechanism, a guide rail slider conveying mechanism, or a chain conveying mechanism, and the like, which meet the requirements, and is determined specifically according to actual situations, and is not described herein again.
On the basis of the above embodiment, in order to make the pre-in-line sample preparation and moisture testing device suitable for moisture testing of the easily oxidized sub-sample, a nitrogen gas generating mechanism 5 for supplying nitrogen gas to the testing mechanism 6 may be further included, and the gas outlet of the nitrogen gas generating mechanism 5 is communicated with the testing mechanism 6.
In the using process, when the moisture test is carried out on the sub-sample which is easy to oxidize such as brown coal and the like, nitrogen can be firstly filled into the testing mechanism 6 through the nitrogen generating mechanism 5, so that the test of the sub-sample is carried out in a nitrogen environment, the influence of oxidation on a test result is avoided, the test accuracy is improved, and the preposed online sample preparation and moisture testing device can be suitable for the test of all coal types.
In actual use, the testing mechanism 6 may be made to include: the external box body is used for providing a protection and closed space for the testing mechanism 6; and the external box body is connected with the nitrogen generating mechanism 5, and the external box body is of a sealing structure.
When the external box body is used in an external environment, particularly in the process of testing an easily oxidized sample, the external box body needs to be in a relatively sealed state, and outdoor air is prevented from entering the inside.
In order to enable the external box body to provide an environment with controllable temperature and humidity, the external box body can comprise a container body, an air conditioner, a temperature and humidity controller and a heating mechanism, and the air conditioner, the temperature and humidity controller and the heating mechanism are controlled to act by related control devices.
The external box body can realize the functions of dust prevention, water prevention, wind prevention, heat preservation, constant temperature, constant humidity and the like.
Preferably, the inner surface of the container body is provided with a heat preservation layer, so that heat loss can be slowed down, and the constant temperature and humidity state can be maintained in the outer container body.
Preferably, the external box body can be provided with a movable roller, so that the external box body can be conveniently moved, and the automatic online moisture testing system provided by the invention can be switched to use in different environments.
In addition to the above pre-set on-line sample preparation and moisture testing device, the present invention also provides a moisture testing method applied to the pre-set on-line sample preparation and moisture testing device disclosed in the above embodiment, the moisture testing method comprising:
step S1, the primary sub-sample conveying mechanism 1 transmits the primary sub-sample collected by the material collecting machine to the inlet of the division mechanism 2;
step S2, the division mechanism 2 divides the primary subsample entering the interior thereof to form a subsample to be tested;
and step S3, the testing mechanism 6 performs secondary division on the sub-sample, performs moisture test on the divided sample, and records and processes the test result.
In the actual processing process, the moisture testing method provided by the embodiment is applied to the situation that the primary subsample is not required to be broken, the primary subsample conveying mechanism 1, the dividing mechanism 2 and the testing mechanism 6 are close to each other and no additional conveying equipment is required to be arranged, in the testing process, the primary subsample is conveyed to the dividing mechanism 2 through the primary subsample conveying mechanism 1, the subsamples formed after division directly enter the testing mechanism 6, the testing mechanism 6 performs secondary division and testing on the subsamples, the operation of combining and batching all the subsamples is not required to be waited, the waiting time is shortened, the moisture loss of the subsamples in the waiting process is avoided, the testing result is closer to the actual situation, and the accuracy of the testing result is improved.
Recording and processing the test results mentioned in step S3 includes recording the moisture test results for each sample, calculating the moisture content of each sample, and finally calculating the moisture content of the total subsample by weighted average.
After the above step S2, the step S3 includes:
in step S21, the crushing mechanism 3 crushes the subsample.
The method content in the step S21 is suitable for the case that the diameter of the initial sub-sample is large, and the sub-sample needs to be broken before the test, so that the influence on the test effect due to the large volume is avoided.
Step S21 is followed by:
in step S22, the second transport mechanism 4 transfers the broken subsample to the test mechanism 6.
In the case where the crushing mechanism 3 is distant from the testing mechanism 6, the subsample may be conveyed to the testing mechanism 6 by the second conveying mechanism 4.
It should be noted that the references to the first conveyor 7 and the second conveyor 4, and to the first and second of the first chute 9 and the second chute 8, are only made to distinguish the differences in position and not to distinguish the order.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The preposed online sample preparation and moisture test device and the moisture test method provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a leading online system appearance and moisture testing arrangement which characterized in that includes:
the primary sub-sample conveying mechanism (1) is used for transmitting the primary sub-sample collected by the material collecting machine to an inlet of the division mechanism (2);
the dividing mechanism (2) is used for dividing the primary subsample entering the dividing mechanism to form a subsample to be tested;
and the testing mechanism (6) is used for carrying out secondary division on the sub-sample, carrying out moisture test on the divided sample, and recording and processing a test result.
2. The in-line pre-sampling and moisture testing device according to claim 1, wherein the dividing mechanism (2) is disposed at an upper portion of the testing mechanism (6), and an outlet of the dividing mechanism (2) is provided with a first chute (9) for connecting with an inlet of the testing mechanism (6), and the subsample enters the testing mechanism (6) through the first chute (9).
3. The pre-online sample preparation and moisture testing device according to claim 1, further comprising a first conveying mechanism (7) for conveying the subsample after the reduction to the testing mechanism (6), wherein one end of the first conveying mechanism (7) is connected with the reduction mechanism (2), and the other end is connected with the testing mechanism (6).
4. The device for on-line pre-sampling and moisture testing according to claim 1, further comprising a crushing mechanism (3) disposed between the reducing mechanism (2) and the testing mechanism (6), wherein the crushing mechanism (3) is used for crushing the subsample.
5. The on-line pre-sampling and moisture testing device according to claim 4, wherein the dividing mechanism (2) is disposed at the upper part of the crushing mechanism (3), and the outlet of the dividing mechanism (2) is disposed opposite to the inlet of the crushing mechanism (3); the crushing mechanism (3) is arranged on the upper portion of the testing mechanism (6), and the outlet of the crushing mechanism (3) is opposite to the inlet of the testing mechanism (6).
6. The device for preparing the sample and testing the moisture in the online manner according to claim 4, further comprising a second conveying mechanism (4) for conveying the subsample after the breaking to the testing mechanism (6), wherein one end of the second conveying mechanism (4) is connected with an outlet of the breaking mechanism (3), and the other end is connected with an inlet of the testing mechanism (6).
7. The device for the pre-online sample preparation and moisture testing according to any one of claims 1-6, further comprising a nitrogen generating mechanism (5) for providing nitrogen to the testing mechanism (6), wherein an air outlet of the nitrogen generating mechanism (5) is communicated with the testing mechanism (6).
8. A moisture testing method applied to the pre-in-line sample preparation and moisture testing apparatus according to any one of claims 1 to 7, comprising:
the primary sub-sample conveying mechanism (1) transmits the primary sub-sample collected by the material collecting machine to an inlet of the division mechanism (2);
the division mechanism (2) divides the primary sub-sample entering the interior of the division mechanism to form a sub-sample to be tested;
and the testing mechanism (6) performs secondary division on the sub-sample, performs moisture test on the divided sample, and records and processes a test result.
9. The moisture test method according to claim 8, wherein said dividing mechanism (2) divides said primary subsample into its interior to form a subsample to be tested, and said testing mechanism (6) performs moisture test on the subsample, and records and processes the test result before it comprises:
and the crushing mechanism (3) is used for crushing the subsample.
10. The moisture test method according to claim 9, wherein the crushing means (3) comprises, after crushing the subsample:
the second conveying mechanism (4) conveys the subsample after the crushing to the testing mechanism (6).
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| CN202011640756.4A CN112683626A (en) | 2020-12-31 | 2020-12-31 | Preposed online sample preparation and moisture testing device and moisture testing method |
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