An online coal quality detection system based on big data

Abstract

The invention provides an online coal quality detection system based on big data, which relates to the technical field of coal detection, and comprises a workbench and a detection table which are arranged correspondingly in front and back. A sampling shell is slidably provided on the workbench, a push rod and a telescopic rod are installed on the sampling shell, a coal pressing shell is installed on the workbench, a coal pressing cavity in the coal pressing shell is correspondingly connected with the sampling cavity in the sampling shell, a coal pressing assembly is connected to the coal pressing cavity, a mobile platform is slidably provided on the detection table, the mobile platform is arranged correspondingly to the online coal quality detection assembly, the online coal quality detection assembly is arranged correspondingly to the adsorption assembly, when a pulse laser is focused on a coal piece to be detected, the adsorption assembly is started, and the excited dust particles are sucked away, so as to avoid the dust particles from polluting the lens of an optical element, thereby affecting the coal quality detection effect, and solves the technical problem that dust particles are excited when the pulse laser is irradiated on the coal piece to be analyzed, the lens of the optical element is polluted, and the coal quality detection effect is easily affected.

Description

Technical Field

[0001] The present invention relates to the technical field of coal detection, and in particular to an online coal quality detection system based on big data. Background Art

[0002] At present, coal is a widely used fuel, which is widely used in the coal-fired power industry. The cost of coal combustion accounts for more than 70% of the operating cost of thermal power plants. The ash content, calorific value, volatile matter, moisture and C, H, S and other element contents in coal are the main indicators of coal testing and analysis, and are also the main indicators for coal quality acceptance settlement and guidance of boiler combustion. Traditional coal quality testing and analysis mainly rely on traditional offline manual sampling, sample preparation and testing analysis. The process is cumbersome and time-consuming, and it is impossible to feedback coal information in time, which brings many disadvantages: First, it takes several hours to know the analysis results, and it is impossible to guide the acceptance, unloading and storage of incoming coal in the first time; second, it needs to rely on manual sampling, sample preparation and testing, and human intervention and errors are prone to occur in the middle link, affecting the authenticity and accuracy of the test results; third, due to the variability of coal used in power plants, when the quality of coal entering the furnace seriously deviates from the designed coal type or the quality of coal entering the furnace fluctuates too frequently and too much, it will have a direct impact on the safety and economy of boiler operation. Traditional offline analysis cannot give coal quality test reports in time to guide boiler combustion adjustment and optimization. Therefore, coal-fired power plants are in urgent need of effective and accurate online real-time detection technology for coal quality.

[0003] Laser induced plasma spectroscopy (LIBS) has become a new laser analysis technology due to its advantages such as high sensitivity, no need for sample pretreatment and multi-element measurement. When the pulsed laser is focused on the coal piece to be analyzed using an optical focusing element, the particles on the surface of the coal piece are excited to produce plasma and rapidly decay. The light signal emitted by the plasma is then collected by the spectral acquisition optical element and input into the spectrometer for analysis. The intensity of the spectral line corresponding to different wavelengths is proportional to the content of the element corresponding to the spectral line. However, when the pulsed laser is irradiated on the coal piece to be analyzed, dust particles will be excited, which will contaminate the lens of the optical element and easily affect the coal quality detection effect. Summary of the invention

[0004] The present invention provides an online coal quality detection system based on big data, which is used to solve the technical problem that when the pulse laser is irradiated on the coal piece to be analyzed, dust particles will be excited, causing pollution to the lens of the optical element, which is easy to affect the coal quality detection effect.

[0005] In order to solve the above technical problems, the present invention discloses an online coal quality detection system based on big data, including a workbench and a detection table correspondingly arranged in front and back, a sampling shell is slidably provided on the workbench, a push rod and a telescopic rod are installed on the sampling shell, a coal pressing shell is installed on the workbench, a coal pressing cavity in the coal pressing shell is correspondingly connected to the sampling cavity in the sampling shell, a coal pressing cavity is connected to a coal pressing assembly, a mobile platform is slidably provided on the detection table, the mobile platform is correspondingly arranged to the online coal quality detection assembly, and the online coal quality detection assembly is correspondingly arranged to the adsorption assembly.

[0006] Preferably, a discharge shell is installed on the front and rear sides of the upper end of the workbench respectively, and the discharge shell is fixedly set at the lower end of the workbench. The discharge cavity of the discharge shell is correspondingly connected to a plurality of discharge holes, and the plurality of discharge holes are arranged through the upper and lower ends of the workbench, and one end of the discharge cavity away from the discharge hole is arranged corresponding to the conveyor belt.

[0007] Preferably, the sampling shell is slidably connected to the upper end of the workbench, the sampling cavity is used to place the coal powder to be tested, the fixed end of the telescopic rod is fixedly arranged on the mounting plate, the mounting plate is fixedly connected to the front end of the workbench, the movable end of the telescopic rod is fixedly connected to the front end of the sampling shell, the push rod is fixedly connected to the rear end of the sampling shell, the end of the push rod away from the sampling shell is fixedly connected to the scraper, and the scraper contacts the upper end of the workbench.

[0008] Preferably, the coal pressing shell is arranged on the workbench through and through, the coal pressing assembly comprises a pressing plate slidably arranged in the coal pressing cavity, the coal pressing cavity corresponds to the blocking plate, and the blocking plate is fixedly connected to the movable end of the telescopic rod.

[0009] Preferably, a mobile platform is provided at the upper end of the detection table for sliding along the front-rear direction, and detection plates are symmetrically provided at the left and right ends of the detection table. An online coal quality detection component is fixed between the detection plates at the left and right ends, and the online coal quality detection component is correspondingly arranged on the upper side of the mobile platform.

[0010] Preferably, the adsorption assembly includes an adsorption shell symmetrically arranged on the front and rear sides of the coal quality online detection assembly, the adsorption shell is connected to the suction pipe, the suction pipe is connected to the storage shell, the storage shell is fixedly arranged between the left and right ends of the detection plates, and the storage shell is arranged on the upper side of the coal quality online detection assembly, a suction pump is installed on the suction pipe, a limit block is fixedly arranged at the rear end of the detection plate, and a collecting shell is correspondingly arranged at the rear end of the detection table, and the collecting cavity in the collecting shell is used to store the detected coal pieces.

[0011] Preferably, a feed plate is fixedly provided at the upper end of the sampling shell, a feed cavity is penetrated through the feed plate, the feed cavity is connected with the sampling cavity, the end of the feed cavity away from the sampling cavity is connected with the discharge pipe, and the discharge pipe is slidably connected with the feed plate, and the discharge pipe is connected with the pretreatment mechanism.

[0012] Preferably, the pretreatment mechanism includes a pretreatment shell, a pretreatment chamber is provided inside the pretreatment shell, active chambers are symmetrically provided at the front and rear ends of the pretreatment chamber, the pretreatment chamber is connected with the active chamber, a grinding shell is installed through the upper end of the pretreatment shell, the grinding shell is provided with a grinding chamber, the grinding chamber is connected with the pretreatment chamber, grinding rollers are rotatably provided on the front and rear sides of the grinding chamber, the lower end discharge port of the grinding chamber is correspondingly arranged with a screening plate, the screening plate is inclined, and the screening plate is movably arranged in the active chamber and the pretreatment chamber, the rear end of the pretreatment shell is fixedly connected with the second storage shell, the upper end of the second storage shell is provided with a cavity, the screening plate is correspondingly arranged with the cavity of the second storage shell, a screening net is installed on the screening plate, the screening net is correspondingly arranged with the second discharge shell, the second discharge shell is arranged in the pretreatment chamber, a mounting block is slidably provided between the second discharge shell and the pretreatment chamber, the second discharge shell is slidably connected with a discharge pipe, the discharge pipe passes through the lower end of the pretreatment chamber and is connected with the outside world, and cams are correspondingly provided on the front and rear sides of the lower end of the second discharge shell.

[0013] Preferably, it also includes a functional mechanism, which includes a motor 1, which is fixedly arranged at the rear end of the pretreatment shell, and is fixedly connected to a drive shaft 1. A guide groove is provided at the side end of the drive shaft 1, and the guide groove is slidably connected to a guide ball. The guide ball is rotatably arranged in an internal movable cavity of the movable sleeve, and the movable sleeve is rotatably connected to a cam and a guide plate on the rear side, and the drive shaft 1 is slidably connected to the movable shaft, and the movable shaft is fixedly connected to the cam on the rear side, and the cam on the rear side is fixedly connected to the collision block, and the guide plate is slidably connected to the lower end of the pretreatment cavity.

[0014] Preferably, motor 2 is fixedly arranged at the front end of the pretreatment shell, motor 2 is fixedly connected to drive shaft 2, drive shaft 2 passes through the front end of the pretreatment shell and is slidably connected to an external sliding sleeve, drive shaft 2 is fixedly connected to the magnetic block, the magnetic block and the electromagnetic block are correspondingly arranged, the electromagnetic block is fixedly connected to gear 2, a number of springs are arranged between drive shaft 2 and gear 2, gear 2 is fixedly connected to the sliding sleeve, gear 2 is correspondingly meshed with gear 1 and gear 3, gear 1 is fixedly connected to the cam on the front side through a rotating shaft, gear 3 is connected to a transmission mechanism through a connecting shaft, the transmission mechanism is connected to a connecting block, the connecting block is slidably connected to the front end of the pretreatment shell, the connecting block is rotatably connected to a cleaning assembly, and the cleaning assembly is composed of a number of cleaning blocks rotatably connected in sequence from top to bottom.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the components in the coal piece to be tested are tested and the pulse laser is focused on the coal piece to be tested, the adsorption component is started to extract the excited dust particles to prevent the dust particles from contaminating the lens of the optical element and affecting the coal quality detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection structure between the workbench and the testing platform of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the pretreatment mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the second connection structure of the motor of the present invention.

[0023] In the figure: 1, mounting plate; 2, workbench; 3, discharge hole; 4, discharge shell 1; 5, conveyor belt; 6, telescopic rod; 7, blocking plate; 8, coal pressure shell; 9, pressure plate; 10, sampling shell; 11, sampling chamber; 12, push rod; 13, feed plate; 14, feed chamber; 15, detection plate; 16, detection table; 17, mobile platform; 18, pretreatment shell; 19, coal quality online detection component; 20, limit block; 21, collection shell; 22, adsorption shell; 23, suction pipe; 24, storage shell 1; 25, grinding chamber; 26, grinding roller; 27, sieve 1. Separation plate; 28. Screening net; 29. ​​Discharge shell 2; 30. Storage shell 2; 31. Discharge pipe; 32. Cam; 33. Movable cavity; 34. Electromagnetic block; 35. Collision block; 36. Motor 1; 37. Drive shaft 1; 38. Guide groove; 39. Guide ball; 40. Movable sleeve; 41. Gear 1; 42. Gear 2; 43. Sliding sleeve; 44. Gear 3; 45. Magnetic block; 46. Pulley 2; 47. Elliptical block; 48. Connecting block; 49. Cleaning block; 50. Opening groove; 51. Fixed shaft; 52. Spring; 53. Motor 2. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] The present invention provides the following embodiments

[0027] Example 1

[0028] The embodiment of the present invention provides a coal quality online detection system based on big data, such as Figure 1-Figure 2 As shown, it includes a workbench 2 and a detection table 16 correspondingly arranged at the front and back, a sampling shell 10 is slidably provided on the workbench 2, a push rod 12 and a telescopic rod 6 are installed on the sampling shell 10, a coal pressing shell 8 is installed on the workbench 2, a coal pressing cavity in the coal pressing shell 8 is correspondingly connected to a sampling cavity 11 in the sampling shell 10, a coal pressing assembly is connected to the coal pressing cavity, a mobile platform 17 is slidably provided on the detection table 16, the mobile platform 17 is used to place coal slices, the mobile platform 17 is correspondingly arranged with a coal quality online detection assembly 19, and the coal quality online detection assembly 19 is correspondingly arranged with an adsorption assembly.

[0029] The beneficial effects of the above technical solution are:

[0030] The sampling chamber 11 is used to store the coal powder to be tested that has been ground and crushed into target coal powder. When the telescopic rod 6 is working, it controls the sampling shell 10 to slide along the workbench 2 until the sampling shell 10 moves to the corresponding upper end of the coal pressing chamber. At this time, the coal powder to be tested in the sampling chamber 11 enters the coal pressing chamber, and is pressed into coal slices. Then, the coal slices to be tested are pushed from the workbench 2 to the moving platform 17 of the testing platform 16 through the push rod 12. The moving platform 17 is a three-dimensional moving platform. The moving platform 17 can drive the coal slices to be tested to move along the front and back directions, left and right directions, and up and down directions of the testing platform 16. When the moving platform 17 drives the coal slices to be tested to move to the bottom of the coal quality online detection component 19, the coal slices to be tested are detected by the coal quality online detection component 19. The pulse laser in the coal quality online detection component 19 is used as a laser emission source. When the pulse laser is focused on the coal slice to be analyzed by using an optical focusing element, the coal slice surface The surface particles are excited to produce plasma and decay rapidly. Then, the optical signal emitted by the plasma is collected by the spectrum collection optical element and input into the spectrometer for analysis. The intensity of the spectral line corresponding to different wavelengths is proportional to the content of the element corresponding to the spectral line. The mobile platform 17 drives the coal piece to be detected to move back and forth, so that different positions of the coal piece to be detected can be detected, and the influence of factors such as the unevenness of the coal piece to be detected and the fluctuation of laser energy on the detection can be reduced, thereby improving the reliability of the coal quality detection results. When the components in the coal piece to be detected are detected and the pulse laser is focused on the coal piece to be detected, the adsorption component is started to extract the excited dust particles to avoid the dust particles from polluting the lens of the optical element, thereby affecting the coal quality detection effect. The technical problem that the pulse laser will excite dust particles when irradiating the coal piece to be analyzed, pollute the lens of the optical element, and easily affect the coal quality detection effect is solved.

[0031] The big data-based online coal quality detection system of the present invention can realize coal sampling, automatic tabletting and sample preparation, and automatic laser detection and analysis. It has a high degree of automation, low labor intensity, no radioactive source pollution, low maintenance cost, and high detection speed, which is conducive to achieving the purpose of rapid online detection of coal quality.

[0032] Example 2

[0033] On the basis of Example 1, Figure 1-Figure 2 As shown, a discharge shell 4 is installed on the front and rear sides of the upper end of the workbench 2, respectively, and a coal pressure shell 8 is arranged between the discharge shells 4 on the front and rear sides. The discharge shell 4 is fixedly arranged at the lower end of the workbench 2, and the discharge cavity of the discharge shell 4 is correspondingly connected with a plurality of discharge holes 3. The plurality of discharge holes 3 are arranged through the upper and lower ends of the workbench 2, and the end of the discharge cavity away from the discharge hole 3 is arranged correspondingly with the conveyor belt 5;

[0034] The sampling shell 10 is slidably connected to the upper end of the workbench 2, the sampling chamber 11 is used to place the coal powder to be detected, the fixed end of the telescopic rod 6 is fixedly arranged on the mounting plate 1, the mounting plate 1 is fixedly connected to the front end of the workbench 2, the movable end of the telescopic rod 6 is fixedly connected to the front end of the sampling shell 10, the push rod 12 is fixedly connected to the rear end of the sampling shell 10, and the end of the push rod 12 away from the sampling shell 10 is fixedly connected to the scraper, and the scraper contacts the upper end of the workbench 2;

[0035] The coal pressing shell 8 is arranged on the workbench 2 through, and the coal pressing assembly includes a pressing plate 9 slidably arranged in the coal pressing cavity. The coal pressing cavity corresponds to the blocking plate 7, and the blocking plate 7 is fixedly connected to the movable end of the telescopic rod 6.

[0036] The beneficial effects of the above technical solution are:

[0037] When the telescopic rod 6 drives the sampling shell 10 to slide along the workbench 2, it also drives the push rod 12 to move, and the push rod 12 drives the scraper to move. The scraper can scrape the coal powder overflowing onto the workbench 2 during the movement of the sampling shell 10 into the discharge hole 3, and finally fall onto the conveyor belt 5 through the discharge shell 4. At the same time, if the coal powder to be detected in the coal pressing chamber reaches the target amount, the remaining coal powder in the sampling chamber 11 can also fall onto the conveyor belt 5 through the discharge hole 3 and the discharge shell 4, and be transported to the recovery area by the conveyor belt 5. When pressing coal, it is necessary to move the blocking plate 7 to the upper side of the coal pressing chamber, and then control the pressing plate 9 to move upward until the coal powder to be detected is pressed into the coal piece to be detected, and then control the telescopic rod 6 to retract, so that the scraper moves to the front side of the coal pressing shell 8, and finally control the pressing plate 9 to continue to move upward so that it remains flush with the workbench 2, and then control the telescopic rod 6 to extend, and the telescopic rod 6 can push the push rod 12 and the scraper to move backward, and push the coal piece to be detected onto the moving platform 17 on the detection table 16.

[0038] Example 3

[0039] On the basis of Example 1, Figure 1-Figure 2 As shown, a movable platform 17 is provided at the upper end of the detection platform 16 for sliding along the front-rear direction, and detection plates 15 are symmetrically provided at the left and right ends of the detection platform 16. A coal quality online detection component 19 is fixedly provided between the detection plates 15 at the left and right ends, and the coal quality online detection component 19 is correspondingly arranged on the upper side of the movable platform 17;

[0040] The adsorption component includes an adsorption shell 22 symmetrically arranged on the front and rear sides of the coal quality online detection component 19, the adsorption shell 22 is connected to the suction pipe 23, the suction pipe 23 is connected to the storage shell 24, the storage shell 24 is fixedly arranged between the detection plates 15 at the left and right ends, and the storage shell 24 is arranged on the upper side of the coal quality online detection component 19, the storage shell 24 is used to store the sucked dust particles, and a suction pump is installed on the suction pipe 23. A limit block 20 is fixedly provided at the rear end of the detection plate 15, and a collection shell 21 is correspondingly provided at the rear end of the detection table 16. The collection cavity in the collection shell 21 is used to store the detected coal pieces.

[0041] The beneficial effects of the above technical solution are:

[0042] When the mobile platform 17 moves to the lower side of the coal quality online detection component 19, the coal quality online detection component 19 is started to work. The adsorption shell is set near the optical focusing element. When the adsorption component is working, the suction pump is started, and the suction pump sucks the micro powder particles into the storage shell 24 through the suction pipe 23 and the adsorption shell 22.

[0043] The optical element includes an optical focusing element and a spectrum collection optical element. The optical focusing element adopts a focusing lens, and the spectrum collection optical element adopts a collection lens. The pulse laser emitted by the pulse laser is focused on the surface of the coal piece through the optical focusing element. The particles on the surface of the coal piece are excited to produce plasma and decay rapidly. In the decay process, photons of a specific frequency are radiated to generate characteristic spectral lines. The spectrum collection optical element collects these characteristic spectral lines and sends them to the spectrometer for analysis. The intensity of the spectral lines corresponding to different wavelengths is proportional to the content of the element corresponding to the spectral line. After being processed by the spectrometer, they are converted into electrical signals and transmitted to the computer to obtain the information of each element. The characteristic spectra of a group of coal pieces to be tested with known element mass concentrations are further obtained to obtain the intensity matrix of characteristic spectral lines of laser induced breakdown spectra of various elements in the coal samples. A large database can be established by using n kinds of coal samples with known characteristics as calibration samples. The characteristics include element content, volatile content, calorific value, moisture content, ash content and ash melting point of the coal samples. When analyzing the quality of the coal to be tested, the differences between the coal pieces to be tested and the calibration samples in the large database are compared from different dimensions (refer to CN201610065879-A method for analyzing coal quality characteristics based on large database identification), which can improve the accuracy of coal quality analysis;

[0044] After the detection is completed, the mobile platform 17 drives the coal pieces that have completed the detection to continue to move to the rear end of the detection platform 16, and then controls the mobile platform 17 to rise so that the coal pieces are at the rear end of the limit block 20, and controls the mobile platform 17 to return to its original position forward. Under the action of the limit block 20, the coal pieces can fall into the collection shell 21 for recovery.

[0045] Example 4

[0046] On the basis of Example 1, Figure 1-Figure 3 As shown, a feed plate 13 is fixedly provided at the upper end of the sampling shell 10, a feed cavity 14 is penetrated through the feed plate 13, the feed cavity 14 is communicated with the sampling cavity 11, one end of the feed cavity 14 away from the sampling cavity 11 is communicated with a discharge pipe 31, and the discharge pipe 31 is slidably connected with the feed plate 13, and the discharge pipe 31 is connected with the pretreatment mechanism;

[0047] The pretreatment mechanism includes a pretreatment shell 18, a pretreatment chamber is arranged inside the pretreatment shell 18, and movable chambers 33 are symmetrically arranged at the front and rear ends of the pretreatment chamber, and the pretreatment chamber is connected with the movable chamber 33. A grinding shell is installed through the upper end of the pretreatment shell 18, and the grinding shell is provided with a grinding chamber 25, and the grinding chamber 25 is connected with the pretreatment chamber. Grinding rollers 26 are rotatably arranged on the front and rear sides of the grinding chamber 25, and the lower end discharge port of the grinding chamber 25 is arranged corresponding to the screening plate 27, and the screening plate 27 is arranged obliquely, and the front side height of the screening plate 27 is higher than the rear side height. The screening plate 27 The activity is arranged in the activity chamber 33 and the pretreatment chamber, the rear end of the pretreatment shell 18 is fixedly connected to the storage shell 30, the upper end of the storage shell 30 is provided with a cavity, the screening plate 27 is arranged corresponding to the cavity of the storage shell 30, the screening plate 27 is installed with a screening net 28, the screening net 28 is arranged corresponding to the discharge shell 29, the discharge shell 29 is arranged in the pretreatment chamber, a mounting block is slidably provided between the discharge shell 29 and the pretreatment chamber, the discharge shell 29 is slidably connected to the discharge pipe 31, and cams 32 are correspondingly provided on the front and rear sides of the lower end of the discharge shell 29.

[0048] The beneficial effects of the above technical solution are:

[0049] By setting the feed plate 13, when the feed chamber 14 is connected to the discharge pipe 31, the coal powder to be detected automatically flows into the sampling chamber 11 through the discharge pipe 31, thereby achieving the purpose of automatic sampling. When the sampling shell 10 slides, it drives the feed plate 13 to move, thereby controlling the disconnection or connection between the feed chamber 14 and the discharge pipe 31.

[0050] The pretreatment mechanism can grind and crush the coal to be tested at the sampling location to achieve the target coal powder. The coal to be tested at the sampling location enters the grinding chamber 25, and the grinding roller 26 is controlled to rotate to grind and crush the coal to be tested. The ground and crushed coal to be tested falls on the screening net 28. After being screened by the screening net 28, the coal powder reaching the target size flows into the discharge pipe 31 through the discharge shell 29. The bottom end of the discharge shell 29 is an inclined end, which is convenient for the coal powder to be tested to flow into the discharge pipe 31. The cam When 32 rotates, it can drive the discharge shell 29 to shake up and down. When the discharge shell 29 vibrates up and down, it drives the mounting block to slide along the pretreatment chamber, so that the discharge shell 29 will not shake when it vibrates up and down. The discharge shell 29 drives the screening plate 27 to vibrate up and down, thereby improving the screening efficiency of the screening net 28. The coal powder that cannot pass through the screening net 28 flows into the cavity of the storage shell 30 through the movable cavity 33 for recovery. Since the screening plate 27 is inclined, the coal powder can slide into the storage shell 30 conveniently.

[0051] Example 5

[0052] On the basis of Example 4, Figure 1 , Figure 3-Figure 4 As shown, it also includes a functional mechanism, which includes a motor 36, which is fixedly arranged at the rear end of the pretreatment shell 18, and the motor 36 is fixedly connected to a drive shaft 37, and a guide groove 38 is provided at the side end of the drive shaft 37, and the guide groove 38 is slidably connected to a guide ball 39, and the guide ball 39 is rotatably arranged in the inner movable cavity of a movable sleeve 40, and the movable sleeve 40 is rotatably connected to the cam 32 and the guide plate on the rear side, and the drive shaft 37 is slidably connected to the movable shaft, and the movable shaft is fixedly connected to the cam 32 on the rear side, and the cam 32 on the rear side is fixedly connected to the collision block 35, and the guide plate is slidably connected to the lower end of the pretreatment chamber;

[0053] Motor 2 53 is fixedly arranged at the front end of the pretreatment shell 18, and motor 2 53 is fixedly connected to drive shaft 2. Drive shaft 2 penetrates the front end of the pretreatment shell 18 and is slidably connected to the external sliding sleeve 43. Drive shaft 2 is fixedly connected to magnetic block 45, and magnetic block 45 is correspondingly arranged with electromagnetic block 34. Electromagnetic block 34 is fixedly connected with gear 2 42. A plurality of springs 52 are arranged between drive shaft 2 and gear 2 42. Gear 2 42 is fixedly connected with sliding sleeve 43. Gear 2 42 is correspondingly meshed with gear 1 41 and gear 3 44. Gear 1 41 is fixedly connected with the cam 32 on the front side through a rotating shaft, and the rotating shaft penetrates the front end of the pretreatment shell 18 and enters the pretreatment chamber. Gear 3 44 is connected with the transmission mechanism through a connecting shaft, and the transmission mechanism is connected with connecting block 48. Connecting block 48 is slidably connected with the front end of the pretreatment shell 18, and connecting block 48 is rotatably connected with the cleaning assembly. The cleaning assembly is composed of a plurality of cleaning blocks 49 rotatably connected from top to bottom.

[0054] The transmission mechanism includes a pulley 1 fixedly connected to the connecting shaft, the pulley 1 is connected to the pulley 2 46 through a transmission belt, the pulley 2 46 is fixedly connected to the elliptical block 47 through a fixed shaft 51, the fixed shaft 51 and the connecting shaft are both rotatably connected to the front end of the pretreatment shell 18, the front and rear ends of the elliptical block 47 are symmetrically provided with open grooves 50, the elliptical block 47 is matched with the groove at the upper end of the connecting block 48, the left and right ends of the groove are symmetrically provided with matching blocks, and the matching blocks are slidably connected to the opening groove 50.

[0055] The beneficial effects of the above technical solution are:

[0056] Start the motor 1 36 and the motor 2 53, the motor 1 36 drives the driving shaft 1 37 to rotate, when the driving shaft 1 37 rotates, the guide groove 38 rotates, and when the guide groove 38 rotates, it slides with the guide ball 39, so that the movable sleeve 40 connected with the guide ball 39 moves forward and backward, and the guide plate guides the sliding of the movable sleeve 40, and the movable sleeve 40 drives the rear cam 32 to move forward and backward, and at the same time, the driving shaft 1 37 also drives the rear cam 32 to rotate, and the rear cam 32 moves while rotating, and the motor 2 53 drives the gear 2 42 to rotate through the driving shaft 2 and the sliding sleeve 43, and the gear 2 42 drives the gear 1 41 to rotate, and the gear 1 41 drives the front cam 32 to rotate through the rotating shaft, and when the cams 32 on both sides of the front and rear rotate, the discharge shell 2 29 is driven to vibrate up and down, thereby accelerating the screening speed and the discharge speed of the discharge shell 2 29, and at the same time, when the rear cam 32 moves forward and backward, it can drive the collision block 35 to collide with the discharge pipe 31, so as to prevent the coal powder in the discharge pipe 31 from being deposited in the pipe;

[0057] After the grinding, screening and discharging work is completed, the electromagnetic block 34 is powered off, and the gear two 42 returns to its original position under the elastic action of the spring 52. At this time, the gear two 42 drives the sliding sleeve 43 to slide along the driving shaft two, so that the gear two 42 is disengaged from the gear one 41, and the gear two 42 is engaged with the gear three 44. At this time, the control motor one 36 stops working, and the motor two 53 works to rotate the gear three 44. The gear three 44 rotates through the connecting shaft, the pulley one, the pulley two 46, the fixed shaft 51 and the elliptical block 47. The groove on the elliptical block 47 slides with the matching block, driving the connecting block 48 to slide along the front end of the pretreatment shell 18. The connecting block 48 drives the cleaning assembly to move up and down. The cleaning assembly includes a plurality of cleaning blocks 49. The cleaning block 49 is provided with a cleaning brush at one end away from the pretreatment shell 18. After the cleaning assembly moves downward, it is connected with the cleaning brush. When the screening plate 27 contacts, the cleaning block 49 starts to rotate, and under the action of gravity of the cleaning block 49, the cleaning brush of the cleaning block 49 is always in contact with the screening net 28. The weight of the cleaning block 49 is large enough to prevent the cleaning block 49 from deflecting when moving on the screening net 28. The cleaning brush of the cleaning block 49 can brush the coal powder on the screening net 28 and send the coal powder into the storage shell 230. The setting of the functional mechanism can automatically clean the screening net 28, and the functional mechanism can accelerate the discharging speed of the discharge shell 29 and the discharge pipe 31 to avoid the deposition of coal powder in the discharge pipe 31, and facilitate the complete flow of the coal powder in the discharge shell 29 and the discharge pipe 31. When the coal powder at different sampling points is screened next time, it can avoid mixing the coal powder to be detected at different sampling points, which affects the subsequent detection effect.

[0058] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A coal quality online detection system based on big data, characterized by: The invention comprises a workbench (2) and a detection table (16) which are arranged in a corresponding manner in the front and the back. A sampling shell (10) is slidably provided on the workbench (2). A push rod (12) and a telescopic rod (6) are installed on the sampling shell (10). A coal pressing shell (8) is installed on the workbench (2). A coal pressing chamber in the coal pressing shell (8) is correspondingly connected to a sampling chamber (11) in the sampling shell (10). A coal pressing assembly is connected to the coal pressing chamber. A moving platform (17) is slidably provided on the detection table (16). The moving platform (17) is correspondingly arranged to a coal quality online detection assembly (19). The coal quality online detection assembly (19) is correspondingly arranged to an adsorption assembly. A feed plate (13) is fixedly provided at the upper end of the sampling shell (10), a feed cavity (14) is penetrated through the feed plate (13), the feed cavity (14) is communicated with the sampling cavity (11), an end of the feed cavity (14) away from the sampling cavity (11) is communicated with a discharge pipe (31), and the discharge pipe (31) is slidably connected to the feed plate (13), and the discharge pipe (31) is connected to the pretreatment mechanism; The pretreatment mechanism comprises a pretreatment shell (18), wherein a pretreatment chamber is provided inside the pretreatment shell (18), movable chambers (33) are symmetrically provided at the front and rear ends of the pretreatment chamber, the pretreatment chamber is communicated with the movable chamber (33), a grinding shell is installed through the upper end of the pretreatment shell (18), the grinding shell is provided with a grinding chamber (25), the grinding chamber (25) is communicated with the pretreatment chamber, grinding rollers (26) are rotatably provided at the front and rear sides of the grinding chamber (25), a discharge port at the lower end of the grinding chamber (25) is arranged corresponding to a sieve plate (27), the sieve plate (27) is arranged obliquely, the sieve plate (27) is movably arranged in the movable chamber (33) and the pretreatment chamber, and the pretreatment shell The rear end of the storage shell (18) is fixedly connected to the second storage shell (30), the upper end of the second storage shell (30) is provided with a cavity, the screening plate (27) is arranged corresponding to the cavity of the second storage shell (30), the screening plate (27) is provided with a screening net (28), the screening net (28) is arranged corresponding to the second discharge shell (29), the second discharge shell (29) is arranged in the pretreatment chamber, a mounting block is slidably provided between the second discharge shell (29) and the pretreatment chamber, the second discharge shell (29) is slidably connected to the discharge pipe (31), the discharge pipe (31) passes through the lower end of the pretreatment chamber and communicates with the outside, and cams (32) are arranged correspondingly on the front and rear sides of the lower end of the second discharge shell (29); The second motor (53) is fixedly arranged at the front end of the pretreatment shell (18), the second motor (53) is fixedly connected to the second drive shaft, the second drive shaft passes through the front end of the pretreatment shell (18) and is slidably connected to the external sliding sleeve (43), the second drive shaft is fixedly connected to the magnetic block (45), the magnetic block (45) and the electromagnetic block (34) are correspondingly arranged, the electromagnetic block (34) is fixedly connected to the second gear (42), a plurality of springs (52) are arranged between the second drive shaft and the second gear (42), the second gear (42) and the sliding sleeve ( 43), gear 2 (42) is meshed with gear 1 (41) and gear 3 (44) respectively, gear 1 (41) is fixedly connected to the cam (32) on the front side via a rotating shaft, gear 3 (44) is connected to the transmission mechanism via a connecting shaft, the transmission mechanism is connected to a connecting block (48), the connecting block (48) is slidably connected to the front end of the pretreatment shell (18), the connecting block (48) is rotatably connected to the cleaning assembly, and the cleaning assembly is composed of a plurality of cleaning blocks (49) rotatably connected in sequence from top to bottom; The transmission mechanism comprises a pulley 1 fixedly connected to a connecting shaft, the pulley 1 being connected to a pulley 2 46 via a transmission belt, the pulley 2 (46) being fixedly connected to an elliptical block (47) via a fixed shaft (51), the fixed shaft (51) and the connecting shaft being rotatably connected to the front end of the pretreatment shell (18), the elliptical block (47) being symmetrically provided with open grooves (50) at the front and rear ends, the elliptical block (47) being matched with a groove at the upper end of the connecting block (48), matching blocks being symmetrically provided at the left and right ends of the groove, and the matching blocks being slidably connected to the open groove (50).

2. The coal quality online detection system based on big data according to claim 1 is characterized by: A discharge shell (4) is installed on both sides of the upper end of the workbench (2), and the discharge shell (4) is fixedly arranged at the lower end of the workbench (2). The discharge cavity of the discharge shell (4) is correspondingly connected to a plurality of discharge holes (3). The plurality of discharge holes (3) are arranged through the upper and lower ends of the workbench (2), and one end of the discharge cavity away from the discharge hole (3) is correspondingly arranged with a conveyor belt (5).

3. The coal quality online detection system based on big data according to claim 1 is characterized by: The sampling shell (10) is slidably connected to the upper end of the workbench (2); the sampling chamber (11) is used to place the coal powder to be detected; the fixed end of the telescopic rod (6) is fixedly arranged on the mounting plate (1); the mounting plate (1) is fixedly connected to the front end of the workbench (2); the movable end of the telescopic rod (6) is fixedly connected to the front end of the sampling shell (10); the push rod (12) is fixedly connected to the rear end of the sampling shell (10); the end of the push rod (12) away from the sampling shell (10) is fixedly connected to a scraper; and the scraper contacts the upper end of the workbench (2).

4. The coal quality online detection system based on big data according to claim 3 is characterized by: The coal pressing shell (8) is arranged on the workbench (2) through and through, and the coal pressing assembly comprises a pressing plate (9) slidably arranged in the coal pressing cavity, the coal pressing cavity and the blocking plate (7) are correspondingly matched, and the blocking plate (7) is fixedly connected to the movable end of the telescopic rod (6).

5. The coal quality online detection system based on big data according to claim 1 is characterized by: A movable platform (17) is provided at the upper end of the detection platform (16) so as to slide in the front-rear direction. Detection plates (15) are symmetrically provided at the left and right ends of the detection platform (16). An online coal quality detection component (19) is fixedly provided between the detection plates (15) at the left and right ends. The online coal quality detection component (19) is correspondingly arranged on the upper side of the movable platform (17).

6. The coal quality online detection system based on big data according to claim 5 is characterized by: The adsorption assembly comprises an adsorption shell (22) symmetrically arranged on the front and rear sides of the coal quality online detection assembly (19); the adsorption shell (22) is connected to a suction pipe (23); the suction pipe (23) is connected to a storage shell (24); the storage shell (24) is fixedly arranged between the detection plates (15) at the left and right ends, and the storage shell (24) is arranged on the upper side of the coal quality online detection assembly (19); a suction pump is installed on the suction pipe (23); a limit block (20) is fixedly arranged at the rear end of the detection plate (15); a collection shell (21) is correspondingly arranged at the rear end of the detection table (16); and a collection chamber in the collection shell (21) is used to store the coal flakes after detection.

7. The coal quality online detection system based on big data according to claim 1 is characterized by: The device also includes a functional mechanism, which includes a motor 1 (36), the motor 1 (36) being fixedly arranged at the rear end of the pretreatment shell (18), the motor 1 (36) being fixedly connected to a drive shaft 1 (37), a guide groove (38) being provided at a side end of the drive shaft 1 (37), the guide groove (38) being slidably connected to a guide ball (39), the guide ball (39) being rotatably arranged in an internal movable cavity of a movable sleeve (40), the movable sleeve (40) being rotatably connected to a rear cam (32) and a guide plate, the drive shaft 1 (37) being slidably connected to the movable shaft, the movable shaft being fixedly connected to the rear cam (32), the rear cam (32) being fixedly connected to a collision block (35), and the guide plate being slidably connected to the lower end of the pretreatment cavity.

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