Coal quality on-line detection device and detection method

Abstract

The invention belongs to the technical field of coal quality detection, and discloses a coal quality on-line detection device and method.The coal quality on-line detection device comprises a sampling mechanism, a detection mechanism and a first coal blockage alarm piece, the sampling mechanism comprises a crusher, a buffer material box and a first feeder, and the crusher can receive part of coal conveyed by a main conveying belt; the buffer material box is connected with an outlet of the crusher and an inlet of the first feeder, and a side material inlet is formed in the buffer material box; the first feeder can convey coal back to the main conveyor belt; the detection mechanism is arranged on a path where the first feeding machine conveys back to the main conveying belt; the first coal blockage alarm part is arranged on a path where the first feeder conveys back to the main conveying belt and is positioned at the downstream of the detection mechanism; according to the detection method, the coal quality on-line detection device is adopted, so that the detection accuracy is improved; and the calibration difficulty of the detection mechanism is also reduced, and the phenomenon that the detection mechanism is damaged due to the coal blockage phenomenon is also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of coal quality detection, and in particular to an online coal quality detection device and detection method. Background Art

[0002] The measurement and analysis of coal composition plays a very important role in the production process of power, metallurgy and other products. In particular, important parameters such as ash and sulfur content in coal provide a key basis for optimizing and adjusting the subsequent combustion process.

[0003] Due to manual sampling, sample preparation and laboratory analysis, this method has a slow analysis speed, is easily affected by human factors, and has low detection efficiency. In order to improve the detection efficiency, the common method in the existing technology is to set a detection mechanism on the main conveyor coal belt to be able to detect the coal quality on the main conveyor belt. On the one hand, this method reduces the detection accuracy because the particle size of the coal medium to be detected is approximately in the range of 30mm to 50mm. On the other hand, the calibration of the detector is difficult, and the calibration test requires the opening of the entire device including the main conveyor belt. At the same time, the detection mechanism may be damaged due to coal blockage during the transmission process. Summary of the Invention

[0004] The purpose of the present invention is to provide an online coal quality detection device and detection method, which can improve the accuracy of detection on the one hand; reduce the difficulty of calibration of the detection mechanism on the other hand; and reduce the phenomenon of damage to the detection mechanism caused by coal blockage.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The coal quality online detection device is used to detect the composition of the coal conveyed by the main conveyor belt. The coal quality online detection device includes:

[0007] The sampling mechanism includes a crusher, a buffer box, and a first feeder. The crusher can receive part of the coal conveyed by the main conveyor belt. The buffer box connects the outlet of the crusher and the inlet of the first feeder. The buffer box is also provided with a side feed port for placing a debugging sample. The first feeder can convey the coal back to the main conveyor belt.

[0008] a detection mechanism, the detection mechanism being provided on a path from the first feeder to the main conveyor belt, and being used to detect the quality of the coal on the path from the first feeder to the main conveyor belt;

[0009] The first coal blockage alarm component is arranged on the path of the first feeder conveying back to the main conveyor belt, and is located downstream of the detection mechanism, so as to be able to issue an alarm for coal blockage downstream of the detection mechanism.

[0010] In some embodiments, the detection mechanism includes at least one of an ash meter, a sulfur meter, and a moisture meter.

[0011] In some embodiments, the sampling mechanism further includes a thickness adjustment component, which is disposed on the path of the first feeder conveying the coal back to the main conveyor belt so as to be able to adjust the thickness of the coal conveyed by the first feeder, and the thickness adjustment component is disposed upstream of the detection mechanism.

[0012] In some embodiments, an isolation screen plate is provided in the buffer material box, and the side feed port is provided above the isolation screen plate.

[0013] In some embodiments, the isolation screen plate is detachably connected to the buffer tank.

[0014] In some embodiments, the sampling mechanism also includes a first weighing scale, the buffer box is arranged on the first weighing scale, the first weighing scale can weigh the weight of the buffer box, and the outlet of the buffer box is flexibly connected to the inlet of the first feeder through a connecting pipe.

[0015] In some embodiments, a second coal blockage alarm is provided on the buffer material box to sound an alarm for coal blockage in the buffer material box.

[0016] In some embodiments, the crusher and / or the first feeder is provided with a zero-speed alarm.

[0017] In some embodiments, the sampling mechanism further comprises at least one of a sample collecting component, a sampler, and a material return member;

[0018] The sample collecting component is arranged on the path of the coal conveyed by the first feeder back to the main conveyor belt, and is arranged downstream of the detection mechanism. The sample collecting component can collect part of the coal conveyed by the first feeder back to the main conveyor belt;

[0019] The sampler is arranged upstream of the crusher, and the sampler is capable of transferring the coal conveyed by the main conveyor belt to the crusher;

[0020] The return material piece is arranged downstream of the first feeder, and the return material piece transfers the coal quality detected by the detection mechanism to the main conveyor belt.

[0021] A detection method is also provided, using the above-mentioned coal quality online detection device, the detection method comprising the following steps:

[0022] Pour the debugging sample into the buffer material box from the side feeding port, test the debugging sample through the detection mechanism, and calibrate the detection mechanism;

[0023] Part of the coal conveyed by the main conveyor belt is transferred to the crusher, and the coal quality is detected by the detection mechanism.

[0024] Beneficial effects of the present invention:

[0025] On the one hand, the above-mentioned device can be used to send the debugging sample with known parameters to the first feeder through the buffer box through the side feeding port, and then the debugging sample is transported by the first feeder through the detection mechanism, so that the detection mechanism is calibrated by the debugging sample, and then when the formal test is carried out, the detection data will not be biased due to the error of the detection mechanism itself; at the same time, when calibrating the detection mechanism, only the first feeder and the detection mechanism need to be started, and there is no need to start the main conveyor belt and other mechanisms, thus saving resources; on the other hand, when the formal test is carried out, the coal on the main conveyor belt is first crushed by the crusher, thereby reducing the particle size of the coal and making the test results more accurate; furthermore, the coal quality online detection device is also provided with a first coal blockage alarm component, thereby minimizing the phenomenon of damage to the detection mechanism due to coal blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the coal quality online detection device of the present invention;

[0027] Figure 2 This is a distribution diagram of the first feeder and the detection mechanism in the coal quality online detection device of the present invention;

[0028] Figure 3 This is a distribution diagram of the crusher and buffer box in the coal quality online detection device of the present invention;

[0029] Figure 4 It is a flow chart of the detection method of the present invention.

[0030] In the picture:

[0031] 10. Sampling mechanism; 101. Crusher; 102. Buffer box; 1021. Side inlet; 1022. Side closure door; 1023. Box door; 103. First feeder; 1031. Protective cover; 1032. First outlet; 1033. Second outlet; 1034. Third outlet; 104. Thickness adjustment assembly; 1041. Scraper plate; 1042. Thickness detector; 105. Isolation screen; 106. First weighing scale; 107. Sample collection assembly; 1071. Divider; 1072. Sample collector; 108. Sampler; 109. Return unit; 110. Second feeder; 111. Second weighing scale; 112. Chute; 113. Coal flow monitor;

[0032] 20. Testing agency; 201. Ash analyzer; 202. Sulfur analyzer; 203. Moisture analyzer;

[0033] 30. The first coal blockage alarm;

[0034] 40. Zero speed alarm;

[0035] 50. Control cabinet;

[0036] 60. Main conveyor belt;

[0037] 70. Clean the zero-speed alarm;

[0038] 80. Second coal blockage alarm;

[0039] 90. The third coal blockage alarm;

[0040] 100. The fourth coal blockage alarm;

[0041] 200, the fifth coal blockage alarm;

[0042] 300. The sixth coal blockage alarm. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0044] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0047] like Figures 1 to 3 As shown, the present application provides an online coal quality detection device, which is used to perform online detection on the coal quality conveyed by the main conveyor belt 60. The online coal quality detection device includes a sampling mechanism 10, a detection mechanism 20 and a first coal blocking alarm 30. The sampling mechanism 10 includes a crusher 101, a buffer box 102 and a first feeder 103. The crusher 101 can receive part of the coal conveyed by the main conveyor belt 60. The buffer box 102 connects the outlet of the crusher 101 and the inlet of the first feeder 103. The buffer box 102 is also provided with a side feed port 103. 021, the side feed port 1021 is used to place the debugging sample; the first feeder 103 can transmit the coal quality back to the main conveyor belt 60; the detection mechanism 20 is arranged on the path of the first feeder 103 transmitting the coal quality back to the main conveyor belt 60, so as to be able to detect the coal quality on the path of the first feeder 103 transmitting the coal quality back to the main conveyor belt 60; the first coal blockage alarm component 30 is arranged on the path of the first feeder 103 transmitting the coal quality back to the main conveyor belt 60, and is located downstream of the detection mechanism 20 (based on the transmission direction of the coal quality), so as to be able to issue an alarm for the coal blockage phenomenon downstream of the detection mechanism 20.

[0048] By adopting the above-mentioned device, on the one hand, the debugging sample with known parameters can be sent to the first feeder 103 through the buffer box 102 through the side feed port 1021, and then the debugging sample is transported through the detection mechanism 20 by the first feeder 103, so that the detection mechanism 20 is calibrated by the debugging sample, and then when the formal detection is carried out, the detection data deviation will not be caused by the error of the detection mechanism 20 itself; at the same time, when calibrating the detection mechanism 20, only the first feeder 103 and the detection mechanism 20 can be started, and there is no need to start the main conveyor belt 60 and other mechanisms, thereby saving resources; on the other hand, when the formal detection is carried out, the coal quality on the main conveyor belt 60 is first crushed by the crusher 101, so that the particle size of the coal quality can be reduced, making the detection result more accurate; furthermore, the coal quality online detection device is also provided with a first coal blocking alarm 30, which can avoid the coal quality blocked downstream of the detection mechanism 20 from accumulating into the detection mechanism 20, thereby minimizing the phenomenon of damage to the detection mechanism 20 due to coal blocking.

[0049] It should be noted here that the crusher 101, the first feeder 103 and the first coal blockage alarm 30 are commonly used components in the prior art, and their specific structures will not be described in detail.

[0050] like Figure 2 As shown, in order to reduce environmental pollution, the first feeder 103 adopts a belt feeder. The outside of the conveyor belt of the first feeder 103 is covered with a protective cover 1031. On the one hand, it can ensure that the coal will not spill during the transmission process and cause environmental pollution; on the other hand, it can provide an installation position for the first coal blockage alarm 30 and the detection mechanism 20.

[0051] like Figure 2As shown, in some embodiments, the detection mechanism 20 includes at least one of an ash meter 201, a sulfur meter 202 and a moisture meter 203, the ash meter 201 is used to detect the ash content of coal (reflection X-ray method), the sulfur meter 202 is used to detect the sulfur content of coal (reflection X-ray method), and the moisture meter 203 is used to monitor the moisture content of coal (microwave method); in the current embodiment, the detection mechanism 20 includes an ash meter 201, a sulfur meter 202 and a moisture meter 203, and the ash meter 201, the sulfur meter 202 and the moisture meter 203 are arranged at intervals along the path of the first feeder 103 returning to the main conveyor belt 60 (that is, the conveying direction of the conveyor belt of the first feeder 103) to reserve sufficient space for detection and maintenance. For example, the ash meter 201 and the sulfur meter 202 are mounted on a protective cover 1031 that covers the outer surface of the conveyor belt of the first feeder 103. The protective cover 1031 is provided with a detection port, and the ash meter 201 and the sulfur meter 202 are located at the detection port. The moisture meter 203 is placed within the protective cover 1031 and is located on both sides of the conveyor belt. It should be noted that the ash meter 201, the sulfur meter 202, and the moisture meter 203 are commonly used components in the prior art, and their specific structures are not described in detail here.

[0052] like Figure 2 As shown, in order to further ensure the accuracy of the detection, the sampling mechanism 10 also includes a thickness adjustment component 104. The thickness adjustment component 104 is located on the path of the first feeder 103 conveying the material back to the main conveyor belt 60, and is arranged upstream of the detection mechanism 20, so as to be able to adjust the thickness of the coal conveyed by the first feeder 103, ensuring that the highest height of the coal is at the same height when the coal reaches the detection mechanism 20, unifying the detection standards, and ensuring the accuracy of the detection. Specifically, the thickness adjustment component 104 includes a scraping plate 1041 and a thickness detector 1042. The scraping plate 1041 and the thickness detector 1042 are both arranged on the protective cover 1031. The thickness detector 1042 can detect the thickness of the coal conveyed by the conveyor belt of the first feeder 103. It should be noted that the thickness detector 1042 can use a laser rangefinder to feedback the coal thickness according to the travel of the laser. It is a commonly used component in the prior art, and the specific structure will not be repeated.

[0053] The position of the scraping plate 1041 in the height direction is adjustable, and the thickness detector 1042 is arranged downstream of the scraping plate 1041, so that the scraping height of the scraping plate 1041 can be adjusted according to the thickness detected by the thickness detector 1042, and thus the thickness of the coal detected by the detection mechanism 20 can be adjusted. Specifically, the protective cover 1031 is provided with a plug interface, and the scraping plate 1041 is plugged into the plug interface and can be adjusted in the height direction within the plug interface, so that the thickness of the coal can be adjusted according to the plug-in height of the scraping plate. In order to fix the scraping plate 1041, the protective cover 1031 is also provided with an adjustment seat, and the adjustment seat is provided with a first long hole in the height direction; and the scraping plate 1041 is provided with a second long hole in the height direction, the first long hole is opposite to the second plug hole, and the scraping plate 1041 is locked to the adjustment seat by a bolt and a nut; when the scraping plate 1041 needs to be adjusted, it is only necessary to loosen the nut.

[0054] like Figure 2 As shown, in some embodiments, in order to reduce the potential danger to the first feeder 103 caused by coal blockage, a sixth coal blockage alarm component 300 is provided upstream of the detection mechanism 20, so that the detection mechanism 20 is clamped in the middle by the first coal blockage alarm component 30 and the sixth coal blockage alarm component 300, thereby further reducing the potential danger to the first feeder 103 caused by coal blockage.

[0055] like Figure 2 As shown, in some embodiments, the sampling mechanism 10 also includes a sample collecting component 107. The sample collecting component 107 is arranged on the path of the first feeder 103 conveying back to the main conveyor belt 60, and is arranged downstream of the detection mechanism 20. The sample collecting component 107 can collect part of the coal quality detected by the detection mechanism 20 for sample storage. Specifically, the sample collecting component 107 includes a reducer 1071 and a sample collector 1072. The reducer 1071 is arranged on the path of the first feeder 103 conveying back to the main conveyor belt 60, wherein a first outlet 1032 is provided on the protective cover 1031, and the reducer 1071 is located at the first outlet 1032, so that the coal quality sample is reduced to a certain proportion by the reducer 1071 for sample retention; the sample collector 1072 is located at the outlet of the reducer 1071, and stores the coal quality collected by the reducer 1071; the reducer 1071 and the sample collector 1072 are existing technical components, and the structure is no longer repeated.

[0056] like Figure 2As shown, in some embodiments, the sampling mechanism 10 further includes a return member 109, which is disposed downstream of the first feeder 103. The return member 109 transfers the coal sampled by the detection mechanism 20 to the main conveyor belt 60. In the current embodiment, the return member 109 is a bucket elevator. Specifically, a protective cover 1031 located at the end of the conveyor belt of the first feeder 103 is provided with a second outlet 1033, which is located downstream of the first outlet 1032. The bucket elevator is disposed at the second outlet 1033 and is capable of receiving the coal sampled by the sample collection assembly 107 and recycling the coal sample back to the main conveyor belt 60, thereby reducing waste. Furthermore, a third outlet 1034 is provided at the end of the conveyor belt of the first feeder 103. The third outlet 1034 is blocked by a blocking door, so that the coal can be discharged through the third outlet 1034 in an emergency. In one of the previous embodiments, the third outlet 1034 can be positioned between the first outlet 1032 and the second outlet 1033 to prevent emergency coal discharge from entering the bucket elevator, reducing unnecessary interference. Furthermore, a third coal blockage alarm 90 is provided at the second outlet 1033. When the bucket elevator is blocked by coal, immediate feedback can be provided through the third coal blockage alarm 90 at the second outlet 1033, reducing the risk of damage to the sample collection assembly 107. This also allows the third outlet 1034 to be opened promptly for coal discharge. Furthermore, a coal flow monitor 113 can be provided at the second outlet 1033 to monitor coal flow and optimize the feed rate based on the coal flow.

[0057] like Figure 3 As shown, in some embodiments, the sampling mechanism 10 further includes a sampler 108 and a second feeder 110. The sampler 108 is provided at the main conveyor 60. The outlet of the sampler 108 is connected to the inlet of the second feeder 110 via a chute 112. The outlet of the second feeder 110 is connected to the inlet of the crusher 101, so that part of the coal can be cut off by the sampler 108, transferred to the second feeder 110 via the chute 112, and then transferred to the crusher 101 via the second feeder 110 for crushing. By providing the sampler 108, automated sampling can be achieved, reducing labor intensity. The sampler 108 can be a belt automatic sampler in the prior art. The second feeder 110 has the same structure as the first feeder 103, both of which are prior art and will not be described in detail. Furthermore, a fourth coal blockage alarm 100 is provided at the inlet of the crusher 101; and a fifth coal blockage alarm 200 is provided at the inlet of the first feeder 103, so that an alarm can also be sounded when coal blockage occurs.

[0058] like Figure 2 and Figure 3As shown, in some embodiments, the crusher 101 and / or the first feeder 103 are provided with a zero-speed alarm 40, so that the zero-speed alarm 40 can monitor whether the crusher 101 or the first feeder 103 is in operation, thereby avoiding coal blockage caused by the stoppage of the two. Specifically, the zero-speed alarm 40 uses a motor zero-speed alarm sensor, which is a prior art and will not be described in detail. Furthermore, the second feeder 110 and the return material 109 can also be provided with the above-mentioned zero-speed alarm 40. In the current embodiment, the first feeder 103 and the second feeder 110 are also equipped with a cleaning component to prevent material accumulation and adhesion. To ensure the normal operation of the cleaning, the first feeder 103 and the second feeder 110 are provided with a cleaning zero-speed alarm 70 to monitor whether the cleaning component is in operation. The cleaning zero-speed alarm 70 can also use a motor zero-speed alarm sensor. It should be noted that the cleaning component is a prior art and the specific structure will not be described in detail.

[0059] like Figure 3 As shown, in some embodiments, the sampling mechanism 10 further includes a first weighing scale 106. The buffer tank 102 is mounted on the first weighing scale 106. The first weighing scale 106 is capable of weighing the buffer tank 102. Based on the weight of the buffer tank 102, the weight of the coal inside the buffer tank 102 can be determined, thereby adjusting the feeding speed of the second feeder 110. The outlet of the buffer tank 102 is flexibly connected to the inlet of the first feeder 103 via a connecting pipe. The inlet of the buffer tank 102 is also flexibly connected to the outlet of the crusher 101 via a connecting pipe. The connecting pipe can be, but is not limited to, a flexible sleeve such as a rubber hose or a bellows. In the current embodiment, the second feeder 110 is also equipped with a second weighing scale 111. The second weighing scale 111 weighs the coal delivered by the second feeder 110 to regulate the quality of the coal entering the crusher 101. For example, the second weighing scale 111 is a belt scale.

[0060] like Figure 3As shown, in some embodiments, an isolation screen plate 105 is further provided in the buffer box 102, and the inlet and outlet of the buffer box 102 are located on both sides of the isolation screen plate 105, so that the coal coming out of the crusher 101 can be screened by the isolation screen plate 105 to screen out impurities (such as rubber, woven bags, etc.) that are not easily crushed by the crusher 101. In the current embodiment, the side feed port 1021 is provided above the isolation screen plate 105, so that the coal entering through the side feed port 1021 can also be screened. In order to facilitate the removal of the above-mentioned impurities, the box wall of the buffer box 102 is also provided with a box door 1023 that can be opened or closed, so that the box door 1023 can remove the above-mentioned impurities. Furthermore, in order to adjust the screening volume, the isolation screen plate 105 is detachably connected to the buffer box 102, so that isolation screen plates 105 with different apertures can be replaced. Specifically, the sidewall of the buffer tank 102 is provided with an insertion hole, the edge of which is provided with a sealing strip. The isolation screen plate 105 is sealed and inserted into the insertion hole. Therefore, when replacing the isolation screen plate 105, it is only necessary to pull the isolation screen plate 105 out of the insertion hole. To reduce the impact of coal blockage in the buffer tank 102, the buffer tank 102 is provided with a second coal blockage alarm 80, which is located above the isolation screen plate 105.

[0061] In some embodiments, a side closed door 1022 that can be opened or closed is provided at the side feed port 1021 so that the side feed port 1021 can be closed when not in use, thereby preventing coal in the buffer box 102 from overflowing and reducing pollution to the environment.

[0062] like Figure 1 As shown, in some embodiments, the online coal quality detection device further includes a control cabinet 50. The control cabinet 50 controls and connects the sampling mechanism 10, the detection mechanism 20, the first coal blockage alarm 30, the zero-speed alarm 40, the cleaning zero-speed alarm 70, the second coal blockage alarm 80, the third coal blockage alarm 90, the fourth coal blockage alarm 100, the fifth coal blockage alarm 200, and the sixth coal blockage alarm 300, thereby facilitating control. The control cabinet 50 is conventional technology and will not be described in detail.

[0063] like Figure 4 As shown, the present application also provides a detection method, which uses the above-mentioned coal quality online detection device to detect the coal quality on the main conveyor belt 60; the detection method includes the following steps:

[0064] Only the first feeder 103 and the detection mechanism 20 are started, and the debugging sample is introduced into the buffer material box 102 through the side feed port 1021. Then, it is conveyed by the first feeder 103. The debugging sample is tested by the detection mechanism 20 to calibrate the detection mechanism 20. A specific calibration method can be that, since the actual values ​​of the relevant parameters of the debugging sample are known, the detection mechanism 20 detects the debugging sample to obtain the detection value, and compares the detection value with the known actual value to calibrate the detection mechanism 20.

[0065] The main conveyor belt 60 is started and the coal is transported through the main conveyor belt 60. Then the sampling mechanism 10 is started and part of the coal on the main conveyor belt 60 is transferred to the first feeder 103 through the sampler 108 and sequentially transported to the detection mechanism 20 for coal quality detection.

[0066] It is understandable that the calibration steps can be repeated multiple times, and the calibration time is not fixed and can be performed as needed; even if the main conveyor belt 60 is conveying coal, it is only necessary to pause the sampler 108 to take materials, and the debugging sample can also be placed through the side feed port 1021 to calibrate the detection mechanism 20.

[0067] When the above steps are performed to calibrate the detection mechanism 20 , only the first feeder 103 and the detection mechanism 20 need to be started, without starting the main conveyor belt 60 and other mechanisms, thus saving resources.

[0068] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An online coal quality detection device for detecting the composition of the coal conveyed by the main conveyor belt (60), characterized in that: The coal quality online detection device comprises: A sampling mechanism (10), the sampling mechanism (10) comprising a crusher (101), a buffer box (102) and a first feeder (103); the crusher (101) is capable of receiving a portion of the coal conveyed by the main conveyor (60); the buffer box (102) connects the outlet of the crusher (101) and the inlet of the first feeder (103); the buffer box (102) is further provided with a side feed port (1021), the side feed port (1021) being used for placing a debugging sample; the first feeder (103) is capable of conveying the coal back to the main conveyor (60); a detection mechanism (20), the detection mechanism (20) being arranged on a path from the first feeder (103) to the main conveyor belt (60), and being used to detect the quality of the coal on the path from the first feeder (103) to the main conveyor belt (60); A first coal blockage alarm (30) is provided on a path from the first feeder (103) to the main conveyor belt (60), and is located downstream of the detection mechanism (20) so as to be able to issue an alarm for coal blockage downstream of the detection mechanism (20).

2. The coal quality online detection device according to claim 1, characterized in that: The detection mechanism (20) includes at least one of an ash analyzer (201), a sulfur analyzer (202), and a moisture analyzer (203).

3. The coal quality online detection device according to claim 1, characterized in that: The sampling mechanism (10) further includes a thickness adjustment component (104), which is arranged on a path of the first feeder (103) conveying the coal back to the main conveyor belt (60) so as to be able to adjust the thickness of the coal conveyed by the first feeder (103). The thickness adjustment component (104) is arranged upstream of the detection mechanism (20).

4. The coal quality online detection device according to claim 1, characterized in that: An isolation screen plate (105) is provided in the buffer material box (102), and the side feed port (1021) is provided above the isolation screen plate (105).

5. The coal quality online detection device according to claim 1, characterized in that: The isolation screen plate (105) is detachably connected to the buffer material box (102).

6. The coal quality online detection device according to claim 1, characterized in that: The sampling mechanism (10) further comprises a first weighing scale (106), the buffer box (102) is arranged on the first weighing scale (106), the first weighing scale (106) is capable of weighing the weight of the buffer box (102), and the outlet of the buffer box (102) is flexibly connected to the inlet of the first feeder (103) via a connecting pipe.

7. The coal quality online detection device according to claim 1, characterized in that: The buffer material box (102) is provided with a second coal blocking alarm component (80) to be able to issue an alarm for coal blocking in the buffer material box (102).

8. The coal quality online detection device according to claim 1, characterized in that: The crusher (101) and / or the first feeder (103) is provided with a zero-speed alarm component (40).

9. The coal quality online detection device according to any one of claims 1 to 8, characterized in that: The sampling mechanism (10) further comprises at least one of a sample collecting component (107), a sampler (108) and a material return member (109); The sample collecting component (107) is arranged on the path of the first feeder (103) conveying the coal back to the main conveyor belt (60), and is arranged downstream of the detection mechanism (20). The sample collecting component (107) is capable of collecting part of the coal conveyed by the first feeder (103) back to the main conveyor belt (60); The sampler (108) is arranged upstream of the crusher (101), and the sampler (108) is capable of transferring the coal conveyed by the main conveyor belt (60) to the crusher (101); The return material piece (109) is arranged downstream of the first feeder (103), and the return material piece (109) transfers the coal quality detected by the detection mechanism (20) to the main conveyor belt (60).

10. A detection method, using the coal quality online detection device according to any one of claims 1 to 9, characterized in that: The detection method comprises the following steps: Pour the debugging sample into the buffer material box (102) through the side feeding port (1021), test the debugging sample through the detection mechanism (20), and calibrate the detection mechanism (20); Part of the coal conveyed by the main conveyor belt (60) is transferred to the crusher (101), and the coal quality is detected by the detection mechanism (20).

Images