A coal conveying line online sampling device and sampling method

Abstract

The present invention discloses an online sampling device and a sampling method for a coal conveying line, and specifically relates to the field of sampling equipment. The online sampling device for a coal conveying line is installed on a coal conveying production line, and includes a coal conveying line mechanism, the coal conveying line mechanism includes a frame, a conveyor belt is provided on the frame for transmission, the conveyor belt is used to convey a mixture of granular coal and powdered coal, and a horizontal driving mechanism is provided on the coal conveying line mechanism, the horizontal driving mechanism includes a moving seat 1, and a vertical driving mechanism is provided on the moving seat 1. The present invention sets a sampling mechanism, puts a sampling bottle into the coal, and after sampling is completed through a feed port, drives a baffle to rotate and block the feed port, and then flips the sampling bottle to separate the granular coal from the powdered coal under the action of gravity. The two types of coal are sampled and tested separately, and the specific characteristics of the two types of coal can be accurately understood, the accuracy of the test results is improved, and it is beneficial to optimize the air-coal ratio and combustion conditions, and further improve the combustion efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling equipment, and more specifically, to an online sampling device and a sampling method for a coal conveying line. Background Art

[0002] A coal-fired power plant is a facility that converts chemical energy into electrical energy. It burns coal to heat water to produce steam, which then drives a turbine that drives a generator to generate electricity. In order to heat up quickly when the boiler of a coal-fired power plant starts and maintain a stable temperature throughout the combustion cycle, a mixture of granular coal and powdered coal is selected. Fine powdered coal is easier to ignite and burns faster, while larger particles of coal can provide more sustained heat release.

[0003] Since coal-fired thermal power plants need to continuously supply coal to boilers to maintain stable power generation, coal conveyor lines are used to improve the efficiency of coal transportation. Coal transportation is achieved through transmission conveyor belts in coal conveyor lines. In order to understand the characteristics of the transported coal in real time, grasp the quality of the coal, and facilitate boiler operators to adjust the air-coal ratio in time to achieve full combustion of the fuel, regular sampling is required during the coal transportation process. After sampling, the moisture content, fixed carbon content, sulfur content, and chemical composition analysis of the coal need to be tested. In the prior art, the conveyor belt continuously transports coal, and the sampling bottle is regularly inserted into the transported coal. The feed port of the sampling bottle is set in the opposite direction of the coal transportation direction to complete the sampling.

[0004] The particle size distribution of granular coal and powdered coal is different, and the combustion characteristics are also different. Therefore, the granular coal samples and powdered coal samples need to be tested separately. However, the samples obtained in the prior art are a mixture of granular coal and powdered coal. Testing the coal mixture will lead to inaccurate test results, and it is impossible to accurately understand the specific characteristics of the two types of coal, which is not conducive to optimizing the air-coal ratio and combustion conditions, resulting in low combustion efficiency. Summary of the invention

[0005] The present invention provides an online sampling device and sampling method for a coal conveyor line, and aims to solve the following problem: the existing online sampling device for a coal conveyor line obtains a sample which is a mixture of granular coal and powdered coal. Detecting the coal mixture will lead to inaccurate detection results, and it is impossible to accurately understand the specific characteristics of the two types of coal, which is not conducive to optimizing the air-coal ratio and combustion conditions, resulting in low combustion efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an online sampling device for a coal conveying line, installed on a coal conveying production line, comprising a coal conveying line mechanism, the coal conveying line mechanism comprising a frame, a conveyor belt is arranged on the frame for transmission, the conveyor belt is used to convey a mixture of granular coal and powdered coal, a horizontal driving mechanism is arranged on the coal conveying line mechanism, a vertical driving mechanism is arranged on the output end of the horizontal driving mechanism, a sampling mechanism is arranged on the output end of the vertical driving mechanism, the sampling mechanism comprises a sampling bottle, the sampling bottle is arranged horizontally and rotatably on the output end of the vertical driving mechanism, and the sampling mechanism is located above the conveyor belt;

[0007] A feed port is provided on the side wall of the sampling bottle, a baffle is slidably provided on the side wall of the sampling bottle, a horizontal plate 1 is provided in the sampling bottle, a horizontal plate 2 is rotatably provided on the horizontal plate 1, a drop hole 1 is provided on the horizontal plate 1, a drop hole 2 is provided on the horizontal plate 2, the drop hole 1 is matched with the drop hole 2, the top of the horizontal plate 1 in the sampling bottle is a powder material chamber, the bottom of the horizontal plate 1 in the sampling bottle is a particle material chamber, the output end of the horizontal driving mechanism is used to drive the sampling bottle to move horizontally, and the output end of the vertical driving mechanism extends the vertically arranged sampling bottle into the coal mixture transported by the conveyor belt through vertical movement, the coal mixture enters the particle material chamber through the feed port, the baffle seals the feed port by rotating along the central axis of the sampling bottle, and the sampling bottle is turned over to allow the powdered coal in the coal mixture to enter the powder material chamber.

[0008] In a preferred embodiment, a guide seat is fixedly provided on the sampling bottle, a guide groove is provided on the baffle, and the guide seat is slidably provided in the guide groove.

[0009] In a preferred embodiment, end caps are rotatably provided on the top and bottom of the sampling bottle, and the end caps are adapted to the horizontal cross-sectional area of ​​the sampling bottle.

[0010] In a preferred embodiment, a material return mechanism is provided on the sampling bottle, and the material return mechanism includes a linear drive 2. A sliding hole is opened on the sampling bottle, and an auxiliary seat is fixedly provided on the output shaft of the linear drive 2. The auxiliary seat is fixedly provided with a cross plate 1, and the cross plate 1 is slidably provided in the sampling bottle. A flexible isolation belt is fixedly provided between the auxiliary seat and the inner wall of the sliding hole.

[0011] In a preferred embodiment, a crushing mechanism is provided at the bottom of the second transverse plate. The crushing mechanism includes a rotary driver fixedly provided at the bottom of the second transverse plate. A crushing blade is fixedly provided on the output shaft of the rotary driver.

[0012] In a preferred embodiment, a support frame is slidably arranged on the frame, two transmission rollers are rotatably arranged on the frame, the conveyor belt transmission is arranged on the two transmission rollers, a plurality of auxiliary rollers and a plurality of side rollers are rotatably arranged on the frame, and the auxiliary rollers and the side rollers are both arranged to roll with the conveyor belt.

[0013] In a preferred embodiment, the horizontal driving mechanism includes a mounting beam, a belt is arranged on the mounting beam for transmission, a movable seat 1 is slidably arranged on the mounting beam, and the belt and the movable seat 1 are fixedly arranged.

[0014] In a preferred embodiment, a linear drive 1 is fixedly mounted on the support frame, the linear drive 1 is vertically mounted on the support frame, and an output shaft of the linear drive 1 is fixedly mounted on the mounting beam.

[0015] In a preferred embodiment, the vertical drive mechanism includes a connecting seat, which is fixedly set on the movable seat one, and a threaded rod is rotatably set on the connecting seat, and a movable seat two is slidably set on the connecting seat, the sampling bottle is rotatably set with the movable seat two, and the movable seat two is threadedly connected with the threaded rod.

[0016] A sampling method for an online sampling device of a coal transportation line comprises the following steps:

[0017] Step 1: The initial state of the sampling bottle is perpendicular to the conveyor belt, the moving seat 1 drives the sampling bottle to move horizontally, and the moving seat 2 drives the sampling bottle to move vertically into the coal mixture driven by the conveyor belt;

[0018] Step 2: driving the baffle to rotate along the central axis of the sampling bottle, the coal mixture enters the particle cavity in the sampling bottle through the feed inlet, and driving the baffle to reset and block the feed inlet;

[0019] Step 3: After the moving seat 2 drives the sampling bottle to move vertically upward, it drives the sampling bottle to flip horizontally 180 degrees, so that the powder material chamber is located above the particle material chamber;

[0020] Step 4: the powdered coal in the coal mixture enters the powder cavity through the second and first drop holes;

[0021] Step 5: Drive the second transverse plate to rotate so that the second drop hole is offset from the first drop hole to complete the separation of the granular coal and the powdered coal.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention provides a sampling mechanism. After the sampling bottle is placed in the coal and is sampled through the feed port, the baffle is driven to rotate and block the feed port. The sampling bottle is then turned over to separate the granular coal from the powdered coal under the action of gravity. The two types of coal are sampled and tested separately, which can accurately understand the specific characteristics of the two types of coal, improve the accuracy of the test results, and is conducive to optimizing the air-coal ratio and combustion conditions, and further improving the combustion efficiency.

[0024] 2. The present invention provides a material return mechanism. After the powdered coal and the granular coal are separated, the space between the powdered coal chamber and the granular coal chamber is changed by the vertical movement of the horizontal plate 1, and the excess coal sample is discharged, thereby improving the uniformity of the sample and further improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the conveyor belt of the present invention.

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the auxiliary roller of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the front view of the support frame of the present invention.

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting beam of the present invention.

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting socket of the present invention.

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the sampling bottle of the present invention.

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the sampling bottle of the present invention.

[0032] Figure 8 This is a schematic diagram of the cross-sectional structure of the sampling bottle of the present invention from the front view.

[0033] Fig. 9 It is a schematic diagram of the structure of the horizontal plate 2 of the present invention when viewed from above.

[0034] Fig.10 It is a structural schematic diagram of the second main view of the linear actuator of the present invention.

[0035] Fig.11 It is a schematic structural diagram of the front view of the crushing blade of the present invention.

[0036] Fig.12 It is a schematic diagram of the flow chart of the sampling method of the present invention.

[0037] The accompanying drawings are marked as follows: 1. coal conveying line mechanism; 11. frame; 12. support frame; 13. transmission roller; 14. conveyor belt; 15. auxiliary roller; 16. side roller; 2. horizontal drive mechanism; 21. mounting beam; 22. linear drive one; 23. belt; 24. moving seat one; 3. vertical drive mechanism; 31. connecting seat; 32. threaded rod; 33. moving seat two; 4. sampling mechanism; 41. sampling bottle; 411. guide seat; 412. sliding hole; 42. opening and closing transmission; 43. baffle; 431. guide groove; 44. end cover; 45. cross plate one; 451. drop hole one; 46. cross plate two; 461. drop hole two; 5. material return mechanism; 51. linear drive two; 52. auxiliary seat; 53. flexible isolation belt; 6. crushing mechanism; 61. rotating drive; 62. crushing blade. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0039] Refer to the instruction manual Figures 1 to 9 , an online sampling device for a coal conveying line, installed on a coal conveying production line, comprises a coal conveying line mechanism 1, the coal conveying line mechanism 1 comprises a frame 11, a conveyor belt 14 is provided on the frame 11 for transmission, the conveyor belt 14 is used to convey a mixture of granular coal and powdered coal, a horizontal driving mechanism 2 is provided on the coal conveying line mechanism 1, the horizontal driving mechanism 2 comprises a moving seat 1 24, a vertical driving mechanism 3 is provided on the moving seat 1 24, the vertical driving mechanism 3 comprises a moving seat 2 33, a sampling mechanism 4 is provided on the moving seat 2 33, the sampling mechanism 4 comprises a sampling bottle 41, and the sampling bottle 41 is rotatably provided on the moving seat 2 33;

[0040] A feeding port is provided on the side wall of the sampling bottle 41, a baffle 43 is slidably provided on the side wall of the sampling bottle 41, a transverse plate 45 is provided in the sampling bottle 41, a transverse plate 46 is rotatably provided on the transverse plate 45, a drop hole 451 is provided on the transverse plate 45, a drop hole 461 is provided on the transverse plate 46, the drop hole 451 is matched with the drop hole 461, the top of the transverse plate 45 in the sampling bottle 41 is a powder material chamber, the bottom of the transverse plate 45 in the sampling bottle 41 is a particle material chamber, the movable seat 24 is used to drive the sampling bottle 41 to move horizontally, the movable seat 233 extends the vertically arranged sampling bottle 41 into the coal mixture transported by the conveyor belt 14 through vertical movement, the coal mixture enters the particle material chamber through the feeding port, the baffle 43 blocks the feeding port by rotating along the central axis of the sampling bottle 41, and the sampling bottle 41 is turned over to allow the powdered coal in the coal mixture to enter the powder material chamber.

[0041] It should be noted that the diameter of the granular coal is greater than 5 mm, the diameter of the powdered coal is less than 0.01 μm, and the diameters of the first drop hole 451 and the second drop hole 461 are both less than 5 mm, that is, the granular material cannot pass through the first drop hole 451 and the second drop hole 461. A motor is fixedly arranged on the movable seat 2 33, and a positioning clamp is fixedly arranged on the output shaft of the motor, and the positioning clamp is fixedly arranged with the sampling bottle 41. A motor is also fixedly arranged on the horizontal plate 1 45, and the output shaft of the motor is fixedly arranged with the horizontal plate 2 46. When the first drop hole 451 and the second drop hole 461 are concentric, they are in a connected state, and the powder material chamber is connected with the particle material chamber. After the deflection of the horizontal plate 2 46, the second drop hole 461 is misaligned with the first drop hole 451, and the powder material chamber is not connected with the particle material chamber.

[0042] It should also be noted that the sampling bottle 41 is configured as a hollow circular cylindrical structure, and the sampling bottle 41 does not have a top cover and a bottom cover. Therefore, two sealing caps are installed on the sampling bottle 41, and the sealing caps are used to seal the top and bottom ends of the sampling bottle 41. After the sampling of the sampling bottle 41 is completed, the lower end cap can be removed to take out the sample in the sampling bottle 41. As a mature existing technology, it will not be elaborated here.

[0043] Furthermore, a control box is provided next to the coal conveying line mechanism 1, and a photoelectric sensor is fixedly provided on the support frame 12, and the detection end of the photoelectric sensor is arranged toward the conveyor belt 14. When the button on the control box is turned to the open position, the photoelectric sensor detects the coal flow signal during the process of the conveyor belt 14 conveying coal, and the sampling device is started. A timing switch is provided in the control box, and the sampling device is automatically started for sampling according to the set time. A limit switch is provided on the support frame 12. When the sampling bottle 41 passes through the limit switch, the signal is transmitted to the control box to automatically stop the timing switch and re-time to complete a sampling. The effect of timed sampling is achieved through the cooperation of the photoelectric sensor and the limit switch. When the countdown time is up, the above action is repeated for sampling once. In this way, repeated sampling is achieved reciprocatingly, and sampling is automatically stopped when no coal flow signal is detected on the belt. As a mature prior art, no further elaboration is made here.

[0044] The specific implementation scenario is as follows: the coal is transported by the transmission of the conveyor belt 14. When sampling is required, the movable seat 24 drives the sampling bottle 41 to move horizontally through horizontal movement. When the sampling bottle 41 is located above the middle of the conveyor belt 14, the movable seat 23 moves vertically downward to extend the vertically set sampling bottle 41 into the coal transported by the conveyor belt 14, and then drives the baffle 43 to slide away. The feed port is set in the opposite direction of the conveying direction of the conveyor belt 14, and the coal mixture enters the sampling bottle 41 through the feed port, and then drives the baffle 43 to move in the opposite direction to block the feed port. At this time, the obtained coal mixture is located in the particle material cavity in the sampling bottle 41, and then the motor drives the horizontal plate 2 46 to rotate, so that the drop hole 2 461 and the drop hole 1 451 are in a connected state, and then the sampling bottle 41 is driven to flip 180°. Under the action of gravity, the powdered coal passes through the drop hole 2 461 and the drop hole 1 4 51 enters the powder material chamber, and the efficiency of the powder coal entering the powder material chamber can be improved by the vertical movement of the movable seat 2 33. When all the powder coal in the granular material chamber enters the powder material chamber, the separation of the granular coal and the powder coal in the coal mixture is completed, and then the horizontal plate 2 46 is driven to rotate, so that the drop hole 1 451 and the drop hole 2 461 are misaligned. At this time, the powder material chamber and the granular material chamber are blocked and are no longer connected. Finally, the cover can be opened to take out the powder coal and the granular coal. A container for storing the obtained samples can be set for batch storage. As a mature existing technology, no more details are made here. Compared with the existing technology, separate sampling of the sample coal for the powder coal and the granular coal not only improves the sampling efficiency, but also facilitates separate detection, and can accurately understand the specific characteristics of the two coal materials, which is beneficial to optimize the air-coal ratio and combustion conditions, and further optimize and improve the combustion efficiency.

[0045] Refer to the instruction manual Figures 6 to 8 In order to facilitate driving the baffle 43 to open and close and complete the sampling of the sample, specifically, a guide seat 411 is fixedly provided on the sampling bottle 41, a guide groove 431 is opened on the baffle 43, and the guide seat 411 is slidably set in the guide groove 431.

[0046] It should be noted that an opening and closing transmission device 42 is fixedly provided on the sampling bottle 41, and the opening and closing transmission device 42 includes a mounting box, which is fixedly provided on the sampling bottle 41, and a motor is fixedly provided in the mounting box. A gear is fixedly provided on the output shaft of the motor, and an arc-shaped rack is fixedly provided on the baffle 43, and the curvature of the arc-shaped rack is parallel to the curvature of the side wall of the sampling bottle 41, and the gear is meshed with the arc-shaped rack. When the gear rotates, it meshes with the arc-shaped rack to drive the baffle 43 to move along the arc-shaped side wall of the end cover 44. As a mature prior art, no further elaboration is required here.

[0047] It should also be noted that the sampling bottle 41 will continue to sample as it moves downward, resulting in uneven distribution of the sample in the sampling bottle 41. During the movement of the baffle 43, the guide seat 411 slides in the guide groove 431, making the movement of the baffle 43 more stable and efficient.

[0048] Since the coal transported by the conveyor belt 14 consists of powdered coal and granular coal, the vibration of the driving source will cause the conveyor belt 14 to vibrate during the coal transportation process. Since the powdered coal has a small particle size, it may fall into the gaps between the granular coal, resulting in the powdered coal and granular coal in the coal mixture transported on the conveyor belt 14 being not evenly distributed but stratified. Therefore, it is impossible to ensure the ratio of granular coal to powdered coal when sampling.

[0049] If there is stratification between the granular coal and the powdered coal, it is very important to extend the sampling bottle 41 into the deepest part of the conveyor belt 14 to transport the coal before sampling. If the baffle 43 is not provided, as the sampling bottle 41 moves downward, material will continue to be taken through the feed port, affecting the uniformity of sampling.

[0050] Refer to the instruction manual Figures 6 to 10 The coal transported by the conveyor belt 14 may be layered, resulting in uneven distribution of powdered coal and granular coal. In order to make the sample more uniform and facilitate subsequent testing, it is necessary to quantitatively sample the coal to avoid too much or too little sample of a certain type of coal, which may cause the test to fail. Specifically, the top and bottom of the sampling bottle 41 are rotatably provided with end caps 44, and the end caps 44 are adapted to the horizontal cross-sectional area of ​​the sampling bottle 41. The sampling bottle 41 is provided with a material return mechanism 5, which includes a linear drive 2 51, a sliding hole 412 is provided on the sampling bottle 41, and an auxiliary seat 52 is fixedly provided on the output shaft of the linear drive 2 51. The auxiliary seat 52 is fixedly provided with a horizontal plate 1 45, and the horizontal plate 1 45 is slidably provided in the sampling bottle 41. A flexible isolation belt 53 is fixedly provided between the auxiliary seat 52 and the inner wall of the sliding hole 412.

[0051] It should be noted that a motor is fixedly arranged on the sampling bottle 41, and the output shaft of the motor is fixedly arranged on the end cover 44. The linear drive 2 51 is set as a cylinder, and the cylinder is fixedly arranged on the sampling bottle 41, and the auxiliary seat 52 is fixedly arranged on the output shaft of the cylinder. The flexible isolation belt 53 is flexible and can automatically expand and contract according to the movement of the auxiliary seat 52, so that the inner wall of the sampling bottle 41 is isolated from the outside. As a mature existing technology, no further elaboration is made here.

[0052] It should also be noted that about 80 grams of sample is generally required for sampling, and the positive and negative difference does not exceed 10 grams. After the separation of powdered coal and granular coal is completed, the vertical angle and position of the sampling bottle 41 are adjusted so that the powder cavity is located above the granular cavity, the powdered coal is located in the powder cavity, and the granular coal is located in the granular cavity. The powdered coal is quantitatively processed, and a vibrator is installed on the sampling bottle 41. The vibrator is started to keep the surface height of the powdered coal in the powder cavity horizontal, and then the motor is started. The rotation of the motor output shaft drives the end cover 44 to rotate. When the end cover 44 rotates 180°, the end of the sampling bottle 41 is not blocked, and then the linear drive 25 is started. 1. The movement of the output shaft of the linear drive 2 51 drives the auxiliary seat 52 to move vertically upward, and the vertical movement of the auxiliary seat 52 drives the horizontal plate 1 45 to move. The continuous movement of the horizontal plate 1 45 makes the space of the powder cavity in the sampling bottle 41 gradually smaller. With the continuous movement of the horizontal plate 1 45, the powdered coal in the powder cavity is discharged through the end of the sampling bottle 41. Since the circumference of the sampling bottle 41 is certain, when the height of the horizontal plate 1 45 is adjusted, the powdered coal remaining in the powder cavity is the required quantitative sample, and then the end cover 44 is driven to rotate and reset. During the resetting process of the end cover 44, the powdered coal in the powder cavity will be further smoothed, thereby further improving the accuracy of the sample quantity.

[0053] Refer to the instruction manual Fig.11 The above technical solution can be used to accurately take powdered coal, but there are gaps between the coal particles. If the above solution is used to directly change the space in the particle cavity and then remove the coal particles to achieve the effect of quantitative material taking, it will inevitably lead to a large error in the weight of the material taken. In order to solve this problem, specifically, a crushing mechanism 6 is provided at the bottom of the second horizontal plate 46. The crushing mechanism 6 includes a rotating driver 61. The rotating driver 61 is fixedly provided at the bottom of the second horizontal plate 46. A crushing blade 62 is fixedly provided on the output shaft of the rotating driver 61.

[0054] It should be noted that the rotary driver 61 is configured as a motor, and the motor is fixedly disposed at the bottom of the second drop hole 461 , and the crushing blade 62 is fixedly disposed on the output shaft of the motor.

[0055] After obtaining the granular coal, when performing fixed carbon content, sulfur content and chemical composition analysis, the granular coal needs to be ground. Fine powder helps to ensure the consistency of the sample, the integrity of the reaction and the accuracy of the measurement results. Therefore, in this embodiment, unlike the above-mentioned technical solution, after the granular coal in the powder cavity is discharged, the sampling bottle 41 is flipped horizontally 180° so that the granular cavity is located above the powder cavity, and then the rotary driver 61 is started. The rotation of the output shaft of the rotary driver 61 drives the crushing blades 62 to rotate. The rotation of the crushing blades 62 crushes the granular coal, eliminates the gaps between the granular coal, and drives the horizontal plate 45 to move back and forth vertically to stubbornly change the space of the granular cavity, thereby further improving the crushing effect of the crushing blades 62 on the granular coal. When the granular coal in the granular cavity is crushed into powder, the corresponding end cover 44 is driven to rotate, and then the horizontal plate 45 is driven to move vertically to reduce the space of the granular cavity and discharge the excess granular coal ground into powder in the granular cavity, thereby achieving the effect of accurate weight sampling of the granular coal.

[0056] Refer to the instruction manual Figure 1 and Figure 2 In order to transport coal stably and efficiently, specifically, a support frame 12 is slidably arranged on the frame 11, two transmission rollers 13 are rotatably arranged on the frame 11, and a conveyor belt 14 is transmitted and arranged on the two transmission rollers 13, and a plurality of auxiliary rollers 15 and a plurality of side rollers 16 are rotatably arranged on the frame 11, and the auxiliary rollers 15 and the side rollers 16 are both rolled with the conveyor belt 14.

[0057] It should be noted that a motor is fixedly mounted on the frame 11 , and the output shaft of the motor is fixedly mounted on the driving roller 13 .

[0058] It should also be noted that, when the motor is started, the rotation of the motor output shaft drives the transmission roller 13 to rotate, and the rotation of the transmission roller 13 drives the conveyor belt 14 to achieve the effect of conveying coal. The auxiliary roller 15 can provide stable support for the conveyor belt 14 to prevent the coal from crushing the conveyor belt 14, and the side roller 16 can lift the edge of the conveyor belt 14 to prevent the coal on the conveyor belt 14 from deviating and falling from the conveyor belt 14.

[0059] Refer to the instruction manual Figures 3 to 5In order to facilitate the horizontal and vertical movement of the sampling bottle 41, specifically, the horizontal driving mechanism 2 also includes a mounting beam 21, a belt 23 is provided on the mounting beam 21 for transmission, a moving seat 24 is slidably provided on the mounting beam 21, and the belt 23 is fixedly provided with the moving seat 24. A linear driver 22 is fixedly provided on the support frame 12, the linear driver 22 is vertically provided on the support frame 12, and the output shaft of the linear driver 22 is fixedly provided with the mounting beam 21. The vertical driving mechanism 3 also includes a connecting seat 31, the connecting seat 31 is fixedly provided on the moving seat 24, a threaded rod 32 is rotatably provided on the connecting seat 31, a moving seat 2 33 is slidably provided on the connecting seat 31, and the moving seat 2 33 is threadedly connected with the threaded rod 32.

[0060] It should be noted that a motor is fixedly arranged on the mounting beam 21, two pulleys are rotatably arranged on the mounting beam 21, the output shaft of the motor is fixedly arranged on the pulley, the belt 23 is connected through the two pulleys, the linear drive 1 22 is set as a cylinder, and the output shaft of the cylinder is fixedly arranged on the mounting beam 21. A motor is fixedly arranged on the connecting seat 31, and the output shaft of the motor is fixedly arranged on the threaded rod 32.

[0061] It should also be noted that when the motor is started, the rotation of the motor output shaft drives the pulley to rotate, and the pulley transmission belt 23 drives the movable seat 1 24 to move horizontally on the mounting beam 21. The rotation of the motor output shaft drives the threaded rod 32 to rotate, and the rotation of the threaded rod 32 drives the movable seat 2 33 to move vertically.

[0062] Refer to the instruction manual Fig.12 , a sampling method of an online sampling device for a coal transportation line, comprising the following steps:

[0063] Step 1: The sampling bottle 41 is initially perpendicular to the conveyor belt 14, the moving seat 1 24 drives the sampling bottle 41 to move horizontally, and the moving seat 2 33 drives the sampling bottle 41 to move vertically into the conveyor belt 14 to drive and transport the coal mixture;

[0064] Step 2: driving the baffle 43 to rotate along the central axis of the sampling bottle 41, the coal mixture enters the particle cavity in the sampling bottle 41 through the feed inlet, and driving the baffle 43 to return to its original position to block the feed inlet;

[0065] Step 3: After the movable seat 2 33 drives the sampling bottle 41 to move vertically upward, the movable seat 2 33 drives the sampling bottle 41 to flip horizontally 180 degrees, so that the powder material chamber is located above the particle material chamber;

[0066] Step 4: The powdered coal in the coal mixture enters the powder cavity through the second drop hole 461 and the first drop hole 451;

[0067] Step 5: Drive the second transverse plate 46 to rotate, so that the second drop hole 461 is offset from the first drop hole 451, and complete the separation of the granular coal and the powdered coal.

[0068] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. An online sampling device for a coal conveying line, installed on a coal conveying production line, characterized in that: The invention comprises a coal conveying line mechanism (1), wherein the coal conveying line mechanism (1) comprises a frame (11), a conveyor belt (14) is arranged on the frame (11), and the conveyor belt (14) is used to convey a mixture of granular coal and powdered coal; a horizontal driving mechanism (2) is arranged on the coal conveying line mechanism (1), a vertical driving mechanism (3) is arranged on the output end of the horizontal driving mechanism (2), a sampling mechanism (4) is arranged on the output end of the vertical driving mechanism (3), and the sampling mechanism (4) comprises a sampling bottle (41), and the sampling bottle (41) is arranged horizontally and rotatably on the output end of the vertical driving mechanism (3); and the sampling mechanism (4) is located above the conveyor belt (14); The side wall of the sampling bottle (41) is provided with a feeding port, the side wall of the sampling bottle (41) is slidably provided with a baffle (43), a transverse plate (45) is provided inside the sampling bottle (41), a transverse plate (46) is rotatably provided on the transverse plate (45), a material drop hole (451) is provided on the transverse plate (45), a material drop hole (461) is provided on the transverse plate (46), the material drop hole (451) is matched with the material drop hole (461), the top of the transverse plate (45) inside the sampling bottle (41) is a powder cavity, and the sampling bottle (41) is provided with a powder cavity. The bottom of the horizontal plate (45) inside the sample bottle (41) is a particle material cavity. The output end of the horizontal driving mechanism (2) is used to drive the sampling bottle (41) to move horizontally. The output end of the vertical driving mechanism (3) extends the vertically arranged sampling bottle (41) into the coal mixture transported by the conveyor belt (14) through vertical movement. The coal mixture enters the particle material cavity through the feed port. The baffle (43) blocks the feed port by rotating along the central axis of the sampling bottle (41). The sampling bottle (41) is turned over to allow the powdered coal in the coal mixture to enter the powdered material cavity.

2. The coal conveying line online sampling device according to claim 1, characterized in that: The sampling bottle (41) is fixedly provided with a guide seat (411), the baffle (43) is provided with a guide groove (431), and the guide seat (411) is slidably arranged in the guide groove (431).

3. The coal transportation line online sampling device according to claim 2 is characterized in that: The top and bottom of the sampling bottle (41) are both rotatably provided with end covers (44), and the end covers (44) are adapted to the horizontal cross-sectional area of ​​the sampling bottle (41).

4. The coal transportation line online sampling device according to claim 3 is characterized in that: The sampling bottle (41) is provided with a material return mechanism (5), the material return mechanism (5) comprises a second linear driver (51), a sliding hole (412) is provided on the sampling bottle (41), an auxiliary seat (52) is fixedly provided on the output shaft of the second linear driver (51), the auxiliary seat (52) is fixedly provided with a first transverse plate (45), the first transverse plate (45) is slidably provided in the sampling bottle (41), and a flexible isolation belt (53) is fixedly provided between the auxiliary seat (52) and the inner wall of the sliding hole (412).

5. The coal transportation line online sampling device according to claim 4 is characterized in that: A crushing mechanism (6) is arranged at the bottom of the second transverse plate (46), and the crushing mechanism (6) comprises a rotary driver (61). The rotary driver (61) is fixedly arranged at the bottom of the second transverse plate (46), and a crushing blade (62) is fixedly arranged on the output shaft of the rotary driver (61).

6. The coal conveying line online sampling device according to claim 5, characterized in that: A support frame (12) is slidably arranged on the frame (11); two transmission rollers (13) are rotatably arranged on the frame (11); the conveyor belt (14) is transmission-arranged on the two transmission rollers (13); a plurality of auxiliary rollers (15) and a plurality of side rollers (16) are rotatably arranged on the frame (11); the auxiliary rollers (15) and the side rollers (16) are both rollably arranged with the conveyor belt (14).

7. The coal transportation line online sampling device according to claim 6 is characterized by: The horizontal driving mechanism (2) comprises a mounting beam (21), a belt (23) is arranged on the mounting beam (21) for transmission, a movable seat (24) is slidably arranged on the mounting beam (21), and the belt (23) and the movable seat (24) are fixedly arranged.

8. The coal transportation line online sampling device according to claim 7, characterized in that: A linear drive (22) is fixedly arranged on the support frame (12); the linear drive (22) is vertically arranged on the support frame (12); and an output shaft of the linear drive (22) is fixedly arranged on the mounting beam (21).

9. The coal transportation line online sampling device according to claim 8, characterized in that: The vertical driving mechanism (3) comprises a connecting seat (31), the connecting seat (31) is fixedly arranged on the movable seat 1 (24), a threaded rod (32) is rotatably arranged on the connecting seat (31), a movable seat 2 (33) is slidably arranged on the connecting seat (31), the sampling bottle (41) is rotatably arranged with the movable seat 2 (33), and the movable seat 2 (33) is threadedly connected with the threaded rod (32).

10. A sampling method for an online sampling device for a coal transportation line according to claim 9, characterized in that: The following steps are involved: Step 1: The sampling bottle (41) is initially perpendicular to the conveyor belt (14), the first movable seat (24) drives the sampling bottle (41) to move horizontally, and the second movable seat (33) drives the sampling bottle (41) to move vertically into the conveyor belt (14) to transport the coal mixture; Step 2: driving the baffle (43) to rotate along the central axis of the sampling bottle (41), the coal mixture enters the particle cavity in the sampling bottle (41) through the feed inlet, and driving the baffle (43) to return to its original position to block the feed inlet; Step 3: The movable seat 2 (33) drives the sampling bottle (41) to move vertically upward, and then drives the sampling bottle (41) to flip horizontally by 180 degrees, so that the powder material chamber is located above the particle material chamber; Step 4: The powdered coal in the coal mixture enters the powder cavity through the second drop hole (461) and the first drop hole (451); Step 5: driving the second horizontal plate (46) to rotate, so that the second drop hole (461) and the first drop hole (451) are offset, and the separation of the granular coal and the powdered coal is completed.

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