Coal sample conveying device

Abstract

This utility model discloses a coal sample conveying device, comprising: an installation platform; a conveyor belt assembly, mounted on the installation platform, including a conveyor belt; and a scraping component, including a positioning platform positioned below the conveyor belt assembly, a collection chamber formed on the positioning platform, a first positioning plate on the positioning platform, a first scraper vertically sliding in the first positioning plate, and a first elastic unit between the first positioning plate and the first scraper. In this utility model, through the operation of the scraping component, the first elastic unit applies an upward thrust to the first scraper, causing the first scraper to contact the surface of the conveyor belt and apply an upward thrust thereto. When the conveyor belt returns and rotates, the first scraper contacts the coal slag adhering to the conveyor belt and scrapes it off, causing the coal slag to fall into the collection chamber, thus achieving coal slag cleaning and ensuring conveying efficiency and equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of coal conveying technology, and in particular to a coal sample conveying device. Background Technology

[0002] Coal sample conveying devices are commonly used equipment that transports coal from the coal mining site to a designated location. They have advantages such as reducing costs and increasing efficiency, reducing workers' direct contact with coal, and ensuring personnel safety. They are often used in coal mining, thermal power generation and other fields.

[0003] In actual transportation processes, conveyor belt assemblies are typically used to transport coal. However, conveyor belts cannot remove coal slag adhering to their surfaces during coal transport. Over time, coal slag accumulates on the conveyor belt, affecting transportation efficiency and even accelerating equipment wear, thus shortening its service life. Therefore, this application proposes a coal sample conveying device capable of cleaning coal slag. Utility Model Content

[0004] The main objective of this invention is to provide a coal sample conveying device capable of cleaning coal slag.

[0005] To achieve the above objectives, this utility model provides a coal sample conveying device, comprising:

[0006] Installation platform;

[0007] A conveyor belt assembly, disposed on the mounting platform, includes a conveyor belt for conveying coal samples;

[0008] The scraping component includes a positioning platform disposed below the discharge end of the conveyor belt assembly. The positioning platform has a collection chamber for storing coal slag, and the top of the collection chamber has an opening communicating with the outside. The positioning platform also has a first positioning plate, which is located on one side of the collection chamber. A first scraper is vertically slidably disposed in the first positioning plate. The scraping surface of the first scraper contacts the surface of the conveyor belt located at the bottom of the conveyor belt assembly and applies an upward thrust. Its width corresponds to the width of the conveyor belt. The first scraper is used to scrape off the coal slag attached to the conveyor belt. A first elastic unit is also disposed between the first positioning plate and the first scraper. The first elastic unit applies a vertically upward thrust to the first scraper.

[0009] Furthermore, the top surface of the positioning platform is provided with an open liquid storage tank, and a drain outlet is provided on one side of the tank. One end of the drain outlet is connected to the liquid storage tank, and the other end is connected to an external drain pipe.

[0010] The positioning platform is also equipped with a cleaning component, which includes a first lifting platform located on the positioning platform away from the discharge end of the conveyor belt assembly. The first lifting platform is located on one side of the liquid storage tank. A second scraper is provided on the moving end of the first lifting platform. The first lifting platform is used to drive the second scraper to move vertically back and forth. A liquid storage chamber for storing spraying medium is opened in the second scraper. An inclined surface is opened on the side of the second scraper near the first scraper. Multiple nozzles are distributed on the inclined surface. The water inlet of each nozzle is connected to the liquid storage chamber. The platform also includes a liquid inlet connected to the liquid storage chamber. A water supply pipe is connected to the liquid inlet. A scraper blade is also provided on the top of the second scraper for scraping off excess water on the conveyor belt and guiding the excess water into the liquid storage tank through the inclined surface.

[0011] Furthermore, the mounting platform is also equipped with a drying component, which includes a heating unit disposed on the mounting platform. The heating unit is used to deliver hot air upward and blow it toward the conveyor belt and the wiping assembly to heat the conveyor belt and the wiping assembly. The heating unit is disposed at the bottom of the conveyor belt and located on one side of the positioning platform. The mounting platform is also equipped with an air collecting hood, which surrounds the heating unit. The air collecting hood is used to reduce the diffusion of hot air. The air collecting hood is also equipped with a wiping assembly, one end of which contacts the conveyor belt and is used to wipe the moisture on the surface of the conveyor belt.

[0012] Furthermore, the wiping assembly includes a first conveyor roller and a second conveyor roller disposed within the air collecting hood and arranged along the width of the conveyor belt. The first conveyor roller is disposed at the end of the air collecting hood near the material outlet of the conveyor belt, and the second conveyor roller is disposed at the end of the air collecting hood near the material inlet of the conveyor belt. The height of the second conveyor roller is lower than that of the first conveyor roller. A wiping belt is wound around the first and second conveyor rollers. The width of the wiping belt corresponds to the width of the conveyor belt, and the wiping belt wound on the first conveyor roller contacts the surface of the conveyor belt. The wiping belt is used to wipe away moisture on the conveyor belt. The assembly also includes a power unit disposed on one side of the air collecting hood. The moving end of the power unit extends into the air collecting hood and is connected to the rotation shaft of the second conveyor roller. The power unit is used to drive the second conveyor roller to rotate and to cause the wiping belt to rotate relative to the rotation direction of the conveyor belt.

[0013] Furthermore, the rotating roller at the feed end of the conveyor belt assembly is rotatably connected to the mounting platform, and the rotating roller at the discharge end of the conveyor belt assembly is rotatably connected to the positioning platform.

[0014] The mounting platform is also provided with a second lifting platform. The fixed end of the second lifting platform is rotatably connected to the mounting platform, and the telescopic end of the second lifting platform is fixedly connected to the scraper component. The second lifting platform is used to drive the discharge end of the conveyor belt assembly to rise and fall.

[0015] Furthermore, the heating unit is provided with arc-shaped grooves on both sides, and a slider is slidably arranged in each groove. The two ends of the first conveying roller are rotatably connected to the corresponding sliders.

[0016] The conveyor belt assembly is also provided with a traction component, which includes connecting rods respectively disposed on the baffles on both sides of the conveyor belt assembly, each connecting rod being provided with a traction rope, and two connecting blocks respectively disposed on the corresponding sliders. The free ends of each traction rope are connected to the corresponding connecting blocks, and each traction rope applies an upward pulling force to the first conveying roller through the corresponding connecting blocks.

[0017] The beneficial effects of this utility model are reflected in:

[0018] In this invention, through the operation of the scraping component, the first elastic unit applies an upward thrust to the first scraper, thereby causing the first scraper to contact the surface of the conveyor belt and apply an upward thrust to it. When the conveyor belt returns and rotates, the first scraper contacts the coal slag attached to the conveyor belt and scrapes it off from the conveyor belt, so that the coal slag falls into the collection chamber, thereby cleaning the coal slag and ensuring conveying efficiency and service life of the equipment. Attached Figure Description

[0019] Figure 1 This is a perspective view of the coal sample conveying device described in this utility model;

[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a cross-sectional view of the coal sample conveying device described in this utility model;

[0022] Figure 4 yes Figure 3 A magnified view of point B in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Mounting platform; 2. Conveyor belt assembly; 21. Conveyor belt; 3. Scraping component; 31. Positioning platform; 311. Collection chamber; 312. Liquid storage tank; 313. Drain outlet; 32. First positioning plate; 33. First scraper; 34. First elastic unit; 4. Cleaning component; 41. First lifting platform; 42. Second scraper; 421. Inclined surface; 43. Liquid storage chamber; 44. Nozzle; 45. Liquid inlet; 46. Squeegee; 5. Drying component; 51. Heating unit; 511. Slide chute; 512. Slider; 52. Wiping component; 521. First conveyor roller; 522. Second conveyor roller; 523. Wiping belt; 524. Power unit; 53. Air collector hood; 6. Second lifting platform; 7. Traction component; 71. Connecting rod; 72. Traction rope; 73. Connecting block; 8. Divider plate. Detailed Implementation Plan

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0026] See Figures 1-4 .

[0027] This utility model discloses a coal sample conveying device, comprising:

[0028] Mounting platform 1;

[0029] Conveyor belt assembly 2, mounted on mounting platform 1, includes a conveyor belt 21 for conveying coal samples;

[0030] The scraping component 3 includes a positioning platform 31 located below the discharge end of the conveyor belt assembly 2. The positioning platform 31 has a collection chamber 311 for storing coal slag. The top of the collection chamber 311 has an opening that communicates with the outside. The positioning platform 31 also has a first positioning plate 32 located on one side of the collection chamber 311. A first scraper 33 is vertically slidably mounted in the first positioning plate 32. The scraping surface of the first scraper 33 contacts the surface of the conveyor belt 21 located at the bottom of the conveyor belt assembly 2 and applies an upward thrust. Its width corresponds to the width of the conveyor belt 21. The first scraper 33 is used to scrape off the coal slag attached to the conveyor belt 21. A first elastic unit 34 is also provided between the first positioning plate 32 and the first scraper 33. The first elastic unit 34 applies a vertically upward thrust to the first scraper 33.

[0031] In practice, when the conveyor belt 21 sends the coal sample out from the discharge end and rotates back, the first elastic unit 34 applies an upward thrust to the first scraper 33, so that the scraping surface of the first scraper 33 contacts the surface of the conveyor belt 21 during the return rotation. During the rotation of the conveyor belt 21, the conveyor belt 21 moves relative to the first scraper 33, and the first scraper 33 scrapes off the coal slag attached to the conveyor belt 21. The coal slag falls into the collection chamber 311 due to gravity.

[0032] In this invention, through the operation of the scraping component 3, the first elastic unit 34 applies an upward thrust to the first scraper 33, thereby causing the first scraper 33 to contact the surface of the conveyor belt 21 and apply an upward thrust to it. When the conveyor belt 21 returns and rotates, the first scraper 33 contacts the coal slag attached to the conveyor belt 21 and scrapes it off from the conveyor belt 21, thereby causing the coal slag to fall into the collection chamber 311, realizing the cleaning of the coal slag, ensuring the conveying efficiency and the service life of the equipment.

[0033] It should be noted that the conveyor belt assembly 2 is common knowledge to those skilled in the art, so its structure and function will not be described in detail.

[0034] In one embodiment, the top surface of the positioning platform 31 is provided with a liquid storage tank 312 with an open top, and a drain port 313 is provided on one side. One end of the drain port 313 is connected to the liquid storage tank 312, and the other end is connected to an external drain pipe (not shown in the figure).

[0035] The positioning platform 31 is also equipped with a cleaning component 4. The cleaning component 4 includes a first lifting platform 41 located at the end of the positioning platform 31 away from the discharge end of the conveyor belt assembly 2. The first lifting platform 41 is located on one side of the liquid storage tank 312. The moving end of the first lifting platform 41 is equipped with a second scraper 42. The first lifting platform 41 is used to drive the second scraper 42 to move vertically back and forth. The second scraper 42 has a liquid storage chamber 43 for storing the spraying medium. The side of the second scraper 42 near the first scraper 33 has an inclined surface 421. Multiple nozzles 44 are distributed on the inclined surface 421. The water inlet of each nozzle 44 is connected to the liquid storage chamber 43. It also includes a liquid inlet 45 connected to the liquid storage chamber 43. The liquid inlet 45 is connected to a water supply pipe (not shown in the figure). The top of the second scraper 42 is also equipped with a scraper 46 for scraping off excess water on the conveyor belt 21 and guiding the excess water into the liquid storage tank 312 through the inclined surface 421.

[0036] With this design, after the conveyor belt assembly 2 completes the coal sample transport, the conveyor belt 21 continues to rotate. The first lifting platform 41 drives the second scraper 42 to rise until the water scraper 46 contacts the surface of the conveyor belt 21. At the same time, the water pipe transports the spraying medium to the storage chamber 43 and sprays it onto the surface of the conveyor belt 21 through each nozzle 44, thereby spraying and washing away the impurities remaining on the conveyor belt 21. As the conveyor belt 21 continues to rotate, the surface of the conveyor belt 21 washed by the spraying medium comes into contact with the water scraper 46. At this time, the water scraper 46 is used to scrape off the excess spraying medium on the surface of the conveyor belt 21. The excess spraying medium is guided into the storage tank 312 through the inclined surface 421 and discharged from the drain pipe through the drain outlet 313.

[0037] Preferably, the second elastic unit can be a spring from the prior art.

[0038] Preferably, the first lifting platform 41 can be a hydraulic lifting platform as used in the prior art.

[0039] Preferably, the spraying medium can be water.

[0040] It should be noted that the nozzle 44 is equipped with an anti-backflow device to prevent the spray medium from flowing into the liquid storage chamber 43 when passing through the inclined surface 421 of the second scraper 42. The structure and function of the anti-backflow device are common knowledge to those skilled in the art, so they will not be described in detail here.

[0041] It should be noted that the positioning platform 31 may be equipped with a partition plate 8, and the partition plate 8 is located between the liquid storage tank 312 and the first scraper 33 to prevent the fluid medium from accidentally splashing into the collection chamber 311 and contaminating the coal slag, thus ensuring dry and wet separation.

[0042] It should be noted that the fixed end of the first lifting platform 41 near the liquid storage tank 312 can be chamfered to further guide the spraying medium into the liquid storage tank 312. The fixed end and the telescopic end of the first lifting platform 41 are dynamically sealed to prevent the spraying medium from flowing into the first lifting platform 41.

[0043] In one embodiment, the mounting platform 1 is further provided with a drying component 5, which includes a heating unit 51 disposed on the mounting platform 1. The heating unit 51 is used to deliver hot air upward and blow it toward the conveyor belt 21 and the wiping component 52 to heat the conveyor belt 21 and the wiping component 52. The heating unit 51 is disposed at the bottom of the conveyor belt 21 and located on one side of the positioning platform 31. The mounting platform 1 is also provided with an air collecting hood 53, which surrounds the heating unit 51. The air collecting hood 53 is used to reduce the diffusion of hot air. The air collecting hood 53 is also provided with a wiping component 52, one end of which contacts the conveyor belt 21 and is used to wipe the moisture on the surface of the conveyor belt 21.

[0044] With this design, after the cleaning component 4 sprays the conveyor belt 21, the conveyor belt 21 continues to rotate until it comes into contact with the wiping component 52. At this time, the wiping component 52 wipes away the residual moisture on the conveyor belt 21. At the same time, the heating unit 51 delivers hot air upward to heat the conveyor belt 21 and the wiping component 52. The air collecting hood 53 is used to reduce the diffusion of hot air, thereby improving the drying efficiency.

[0045] Preferably, the heating unit 51 can be a hot air blower from the prior art;

[0046] In one embodiment, the wiping assembly 52 includes a first conveyor roller 521 and a second conveyor roller 522 disposed within an air collecting hood 53 along the width direction of the conveyor belt 21. The first conveyor roller 521 is disposed at the end of the air collecting hood 53 near the discharge end of the conveyor belt 21, and the second conveyor roller 522 is disposed at the end of the air collecting hood 53 near the feed end of the conveyor belt 21. The height of the second conveyor roller 522 is lower than the height of the first conveyor roller 521. A wiping belt 523 is also wound around the first conveyor roller 521 and the second conveyor roller 522. The width of the wiping belt 523 corresponds to the width of the conveyor belt 21, and the wiping belt 523 wound on the first conveyor roller 521 contacts the surface of the conveyor belt 21. The wiping belt 523 is used to wipe the moisture on the conveyor belt 21. It also includes a power unit 524 disposed on one side of the air collecting hood 53. The moving end of the power unit 524 extends into the air collecting hood 53 and is connected to the rotating shaft of the second conveyor roller 522. The power unit 524 is used to drive the second conveyor roller 522 to rotate and to make the wiping belt 523 rotate relative to the rotation direction of the conveyor belt 21.

[0047] With this design, when the conveyor belt 21 needs to be dried, the power unit 524 drives the first conveyor roller 521 and the second conveyor roller 522 to rotate together via the wiping belt 523, and makes the wiping belt 523 rotate relative to the rotation direction of the conveyor belt 21. The wiping belt 523 wound on the first conveyor roller 521 contacts the conveyor belt 21 and wipes the moisture off the conveyor belt 21. As the wiping belt 523 continues to rotate, the surface containing moisture on the wiping belt 523 moves closer to the second conveyor roller 522. At this time, the relative distance between the corresponding surface of the wiping belt 523 and the heat source of the heating unit 51 decreases, thereby improving the drying efficiency of the heating unit 51 on the wiping belt 523, thus ensuring that the wiping belt 523 can dry the conveyor belt 21 multiple times.

[0048] In one embodiment, the rotating roller at the feed end of the conveyor belt assembly 2 is rotatably connected to the mounting platform 1, and the rotating roller at the discharge end of the conveyor belt assembly 2 is rotatably connected to the positioning platform 31.

[0049] The mounting platform 1 is also equipped with a second lifting platform 6. The fixed end of the second lifting platform 6 is rotatably connected to the mounting platform 1, and the telescopic end of the second lifting platform 6 is fixedly connected to the scraper component 3. The second lifting platform 6 is used to drive the discharge end of the conveyor belt assembly 2 to rise and fall.

[0050] With this design, when the height of the discharge end of the conveyor belt assembly 2 needs to be adjusted, the second lifting platform 6 drives the discharge end of the conveyor belt assembly 2 to rise or move through the positioning platform 31. At this time, the conveyor belt assembly 2 rotates with its rotational connection with the mounting platform 1 as the center. Since the telescopic end of the second lifting platform 6 is rotatably connected to the bottom of the positioning platform 31, and the positioning platform 31 is rotatably connected to the rotating roller set at the discharge end of the conveyor belt assembly 2, when the conveyor belt assembly 2 rotates, the positioning platform 31 and the second lifting platform 6 will not interfere with the rotation of the conveyor belt assembly 2, and will compensate for the displacement deviation generated when the conveyor belt assembly 2 rotates, so that the conveyor belt assembly 2 can adapt to equipment of different heights and improve its applicability.

[0051] It should be noted that when the conveyor belt assembly 2 rotates to its maximum height, its deviation will not be too large. This allows the rotational connection between the conveyor belt assembly 2, the positioning platform 31, and the second lifting platform 6 to compensate for the deviation generated when the conveyor belt assembly 2 rotates. Furthermore, the first elastic unit 34 applies an upward thrust to the first scraper 33, and the first lifting platform 41 can drive the second scraper 42 to move closer to or further away from the conveyor belt 21. The first scraper 33 and the second scraper 42 can always maintain normal contact with the conveyor belt 21. Therefore, the rotational changes of the conveyor belt assembly 2 will not affect the operation of the scraping component 3.

[0052] In one embodiment, the heating unit 51 has arc-shaped grooves 511 on both sides, and a slider 512 is slidably disposed in each groove 511. The two ends of the first conveying roller 521 are rotatably connected to the corresponding slider 512.

[0053] The conveyor belt assembly 2 is also provided with a traction component 7, which includes connecting rods 71 ​​respectively disposed on the baffles on both sides of the conveyor belt assembly 2, each connecting rod 71 is provided with a traction rope 72, and also includes two connecting blocks 73 respectively disposed on the corresponding sliders 512. The free end of each traction rope 72 is connected to the corresponding connecting block 73, and each traction rope 72 applies an upward pulling force to the first conveying roller 521 through the corresponding connecting block 73.

[0054] With this design, when the conveyor belt assembly 2 rotates, each traction rope 72 applies an upward pulling force to the first conveyor roller 521, thereby causing each slider 512 to drive the first conveyor roller 521 to slide along the track opened by the chute 511, and ensuring that the wiping belt 523 on the first conveyor roller 521 is always in contact with the conveyor belt 21, so as to ensure that the wiping belt 523 can still work normally when the conveyor belt assembly 2 rotates to any angle.

[0055] It should be noted that the first conveying roller 521 can be made of lightweight and high-strength materials such as aluminum alloy, and the traction rope 72 has sufficient tension, so that the traction rope 72 can stably drive the first conveying roller 521 to move.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Furthermore, "multiple," "multiple groups," and "several" refer to two or more.

Claims

1. A coal sample conveying device, characterized in that, include: Mounting station (1); A conveyor belt assembly (2), disposed on the mounting platform (1), includes a conveyor belt (21) for conveying coal samples; The scraping component (3) includes a positioning platform (31) located below the discharge end of the conveyor belt assembly (2). The positioning platform (31) has a collection chamber (311) for storing coal slag. The top of the collection chamber (311) has an opening communicating with the outside. The positioning platform (31) also has a first positioning plate (32), which is located on one side of the collection chamber (311). A first scraper (33) is vertically slidably mounted in the first positioning plate (32). The scraping surface of the first scraper (33) contacts the surface of the conveyor belt (21) located at the bottom of the conveyor belt assembly (2) and applies an upward thrust, and its width corresponds to the width of the conveyor belt (21). The first scraper (33) is used to scrape off the coal slag attached to the conveyor belt (21). A first elastic unit (34) is also provided between the first positioning plate (32) and the first scraper (33). The first elastic unit (34) applies a vertical upward thrust to the first scraper (33).

2. The coal sample conveying device according to claim 1, characterized in that, The top surface of the positioning platform (31) is provided with an open liquid storage tank (312), and a drain outlet (313) is provided on one side. One end of the drain outlet (313) is connected to the liquid storage tank (312), and the other end is connected to an external drain pipe. The positioning platform (31) is also provided with a cleaning component (4). The cleaning component (4) includes a first lifting platform (41) located on the positioning platform (31) away from the discharge end of the conveyor belt assembly (2). The first lifting platform (41) is located on one side of the liquid storage tank (312). A second scraper (42) is provided on the moving end of the first lifting platform (41). The first lifting platform (41) is used to drive the second scraper (42) to move vertically back and forth. A liquid storage chamber (43) for storing the spraying medium is opened in the second scraper (42). 42) An inclined surface (421) is provided on one side near the first scraper (33). Multiple nozzles (44) are distributed on the inclined surface (421). The water inlet of each nozzle (44) is connected to the liquid storage chamber (43). It also includes a liquid inlet (45) connected to the liquid storage chamber (43). The liquid inlet (45) is connected to a water supply pipe. The top of the second scraper (42) is also provided with a scraper (46) for scraping off excess water on the conveyor belt (21) and guiding excess water to the liquid storage tank (312) through the inclined surface (421).

3. The coal sample conveying device according to claim 1, characterized in that, The mounting platform (1) is also provided with a drying component (5). The drying component (5) includes a heating unit (51) disposed on the mounting platform (1). The heating unit (51) is used to deliver hot air upward and blow it toward the conveyor belt (21) and the wiping component (52) to heat the conveyor belt (21) and the wiping component (52). The heating unit (51) is disposed at the bottom of the conveyor belt (21) and located on one side of the positioning platform (31). The mounting platform (1) is also provided with a wind collector hood (53), and the wind collector hood (53) surrounds the heating unit (51). The wind collector hood (53) is used to reduce the diffusion of hot air. The wind collector hood (53) is also provided with a wiping component (52). One end of the wiping component (52) contacts the conveyor belt (21) and is used to wipe the moisture on the surface of the conveyor belt (21).

4. The coal sample conveying device according to claim 3, characterized in that, The wiping assembly (52) includes a first conveyor roller (521) and a second conveyor roller (522) disposed inside the air collecting hood (53) along the width direction of the conveyor belt (21). The first conveyor roller (521) is disposed at the end of the air collecting hood (53) near the discharge end of the conveyor belt (21), and the second conveyor roller (522) is disposed at the end of the air collecting hood (53) near the feed end of the conveyor belt (21). The height of the second conveyor roller (522) is lower than the height of the first conveyor roller (521). A wiping belt (523) is also wound around the first conveyor roller (521) and the second conveyor roller (522). The width of 23) corresponds to the width of the conveyor belt (21), and the wiping strip (523) wound on the first conveyor roller (521) contacts the surface of the conveyor belt (21). The wiping strip (523) is used to wipe the moisture on the conveyor belt (21). It also includes a power unit (524) disposed on one side of the air collecting hood (53). The moving end of the power unit (524) extends into the air collecting hood (53) and is connected to the rotating shaft of the second conveyor roller (522). The power unit (524) is used to drive the second conveyor roller (522) to rotate and make the wiping strip (523) rotate relative to the rotation direction of the conveyor belt (21).

5. The coal sample conveying device according to claim 1, characterized in that, The rotating roller at the feed end of the conveyor belt assembly (2) is rotatably connected to the mounting platform (1), and the rotating roller at the discharge end of the conveyor belt assembly (2) is rotatably connected to the positioning platform (31). The mounting platform (1) is also provided with a second lifting platform (6). The fixed end of the second lifting platform (6) is rotatably connected to the mounting platform (1), and the telescopic end of the second lifting platform (6) is fixedly connected to the scraper component (3). The second lifting platform (6) is used to drive the discharge end of the conveyor belt assembly (2) to rise and fall.

6. The coal sample conveying device according to claim 4, characterized in that, The heating unit (51) has arc-shaped grooves (511) on both sides, and a slider (512) is slidably arranged in each groove (511). The two ends of the first conveying roller (521) are rotatably connected to the corresponding slider (512). The conveyor belt assembly (2) is also provided with a traction component (7). The traction component (7) includes connecting rods (71) respectively disposed on the baffles on both sides of the conveyor belt assembly (2). Each connecting rod (71) is provided with a traction rope (72). It also includes two connecting blocks (73) respectively disposed on the corresponding sliders (512). The free end of each traction rope (72) is connected to the corresponding connecting block (73). Each traction rope (72) applies an upward pulling force to the first conveying roller (521) through the corresponding connecting block (73).

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