An on-line monitoring device and method for total moisture of coal into a furnace

Abstract

This invention discloses an online monitoring device and method for the total moisture content of coal fed into a furnace, relating to the field of coal moisture content monitoring technology. The device includes a first base plate. The online monitoring device and method comprises a storage bin, a first reciprocating screw, and a storage dish. Coal powder inside the storage bin enters the storage chamber through a switch valve. A first connecting block drives a rack upwards, causing the rack to drive a second transmission gear to rotate, thus moving a second push plate. The storage dish moves into a drying chamber for drying. When the coal powder in the storage chamber is dried, a pressure sensor obtains the weight information of the coal powder inside the storage chamber. Therefore, based on the weight of the dried coal powder and the weight of the coal powder before drying, the total moisture content of the coal fed into the furnace can be obtained. This allows the monitoring device to automatically detect the total moisture content of the coal fed into the furnace without the need for manual sampling and testing.

Description

Technical Field

[0001] This invention relates to the field of total moisture monitoring technology for coal fed into the furnace, specifically to an online monitoring device and method for total moisture monitoring of coal fed into the furnace. Background Technology

[0002] Total moisture in coal refers to all the free water in coal, that is, the sum of external and internal moisture. It is an auxiliary indicator in the calculation of coal ash content and a fundamental indicator in coal pricing.

[0003] Large and medium-sized power plants in China consume thousands or even tens of thousands of tons of coal daily. Accepting coal samples using traditional manual sampling methods is extremely labor-intensive, inefficient, and involves harsh working conditions. More importantly, the quality of the samples is difficult to guarantee. Therefore, this application proposes an online monitoring device and method for the total moisture content of coal fed into the furnace. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an online monitoring device and method for total moisture content of coal fed into the furnace, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an online monitoring device for the total moisture content of coal fed into a furnace, comprising a first base plate, a conveyor fixedly connected to the top of the first base plate, two first fixed plates disposed on the top of the first base plate and above the conveyor, connecting frames disposed on both sides of the two first fixed plates, the bottom ends of the connecting frames being connected to the top of the first base plate, a first rotating roller rotatably connected between the two first fixed plates, and a second rotating roller rotatably connected between the two first fixed plates and on one side of the first rotating roller, the first rotating roller and the second rotating roller being connected by a conveyor belt, and a first servo motor disposed on one side of one of the first fixed plates, the output end of the first servo motor being connected to one end of the second rotating roller. Next, a fixed box is provided on the top of the first base plate and on one side of the conveyor. A guide plate is provided on the top of the fixed box, and a receiving box is provided on the top of the fixed box. A crushing box is provided inside the fixed box. A feed inlet is opened on the top of the crushing box, and the top of the feed inlet extends to the top of the receiving box. Two crushing rollers are rotatably connected inside the crushing box. A coal separator is provided inside the fixed box and below the crushing box. A first guide head is provided on one side of the coal separator, and a second guide head is provided on the other side of the coal separator. Two vertical plates are provided inside the fixed box. Through slots are opened on both sides of the fixed box. The two ends of the vertical plates pass through the through slots and extend to the outside of the fixed box. A storage box is provided inside the fixed box.

[0006] Optionally, a first conveyor roller is rotatably connected between the two upright plates, and a second conveyor roller is rotatably connected between the two upright plates and on one side of the first conveyor roller. The first conveyor roller and the second conveyor roller are connected by a conveyor belt. A second servo motor is provided on one side of one of the upright plates. The output end of the second servo motor is connected to one end of the second conveyor roller. The surface of the conveyor belt is provided with a plurality of tracks. A first reciprocating screw is rotatably connected inside each track. One end of each first reciprocating screw extends to the outside of the track and is fitted with a second transmission gear. A second push plate is threaded to the outside of each first reciprocating screw. One end of each second push plate extends to the outside of the track.

[0007] Optionally, a second base plate is provided on one side of the second push plate, a pressure sensor is provided on the top of the second base plate, a mounting plate is provided on the detection end of the pressure sensor, a storage dish is placed on the top of the mounting plate, two mounting slots are provided on the bottom of the storage dish, a mounting block is provided on the top of the mounting plate and inside the mounting slot, a mounting slot is provided on one side of the inner cavity of the mounting block, a third servo motor is provided at the output end of the mounting slot, and a locking pin is threaded to the opposite position of the outer thread of the third servo motor, a locking groove is provided inside the storage dish and on both sides of the mounting block, one end of the locking pin extends into the locking groove, and a storage cavity is provided on the top of the storage dish.

[0008] Optionally, a guide rail is provided on one side of the crushing box, a threaded column is rotatably connected inside the guide rail, a first moving block is threadedly connected to the outer side of the threaded column, the bottom end of the first moving block extends to the bottom of the guide rail, a discharge hopper is provided on one side of the first moving block, a discharge port is opened at the bottom of the crushing box, a discharge outlet is opened at the bottom of the discharge hopper, two sixth servo motors are provided on one side of the crushing box, the output ends of the sixth servo motors are connected to one end of the crushing roller, a drive shaft is provided on one side of the crushing box, one end of the drive shaft is connected to one end of a crushing roller, one end of the threaded column extends to the outer side of the guide rail, and a fourth pulley connected by belt drive is sleeved on the outer side of both the threaded column and the drive shaft.

[0009] Optionally, a second feeding cylinder is provided inside the fixed box, and a first spiral feeding shaft is rotatably connected inside the second feeding cylinder. A waste bin is provided inside the fixed box and below the first guide head. A solenoid valve is provided on one side of the waste bin, and one end of the solenoid valve extends into the second feeding cylinder. A first feeding cylinder is fixedly connected inside the fixed box and on one side of the storage bin. A fixed column is provided on one side of the first feeding cylinder, and a second reciprocating screw is rotatably connected inside the fixed column. A sliding plate is threaded onto the outer side of the second reciprocating screw, and one end of the sliding plate extends into the fixed column. A receiving head is provided on the outer side of the column. A connecting column is provided at the bottom of the fixed column. A fourth servo motor is provided at the bottom of the inner cavity of the connecting column. A threaded shaft is provided at the output end of the fourth servo motor. A connecting block is threadedly connected to the outer side of the threaded shaft. One end of the connecting block extends to the outer side of the connecting column and is provided with a rack. A second fixing plate is provided at the bottom of the fixed column. A transmission rod is rotatably connected to one side of the second fixing plate. A first transmission gear is sleeved on one end of the transmission rod. A first pulley connected by belt drive is sleeved on the outer side of both the second reciprocating screw and the transmission rod.

[0010] Optionally, a second spiral conveying shaft is rotatably connected inside the first conveying cylinder, and a flexible hose is provided on one side of the receiving head, with one end of the flexible hose extending into the inside of the first conveying cylinder.

[0011] Optionally, a fixing block is provided inside the fixing box, and a limiting block is provided inside the fixing box and below the fixing block. The bottom end of the second spiral conveying shaft extends above the first conveying cylinder, and the bottom end of the first spiral conveying shaft extends below the second conveying cylinder. A fifth servo motor is provided inside the fixing box, and the output end of the fifth servo motor is connected to the bottom end of the first spiral conveying shaft. A worm gear is rotatably connected to one side of the limiting block. Meshing bevel gears are sleeved on the outer sides of both the first spiral conveying shaft and the worm gear. The bottom of the fixing block is rotatably connected to... The device includes a drive column, with a worm gear connected to a worm drive fitted on its outer side. A clutch sleeve is fitted on the outer side of the second spiral conveyor shaft, and a third pulley is fitted on the outer side of the clutch sleeve. A second pulley is fitted on the outer side of the drive column and connected to the third pulley via a belt. The top of the second conveyor cylinder extends above the fixed box. A second connecting valve is provided on one side of the second conveyor cylinder. A conveying platform is provided on the top of the fixed box. A first connecting valve is provided on the other side of the second conveyor cylinder, with one end of the first connecting valve extending into the receiving box.

[0012] Optionally, the second spiral conveyor shaft has several moving grooves inside, and a second moving block is slidably connected inside each moving groove. A clutch post is provided at one end of each second moving block. Several clutch grooves are provided on the inner side of the clutch sleeve. One end of each clutch post extends into the clutch groove. A connecting spring is slidably connected inside the moving groove and outside the clutch post. An electromagnet is provided on one side of the inner cavity of the moving groove and on one side of the second moving block.

[0013] A method for online monitoring of total moisture content in coal fed into a furnace includes the following steps:

[0014] S1: Coal samples are collected from the coal conveyed on the surface of the conveyor. During the process of conveying coal, the output of the first servo motor drives the second roller to rotate, so that the second roller drives the first roller to rotate through the conveyor belt, thereby driving the first push plate to push the coal on the surface of the conveyor through the guide plate into the receiving box, and then into the crushing box through the feed inlet. The output of the sixth servo motor drives the crushing roller to rotate, so that the crushing roller crushes the coal into coal powder, and then falls into the discharge hopper.

[0015] S2: Weigh the coal sample and then place it inside the drying oven to dry it;

[0016] S3: The coal sample is transported and cleaned after testing. This invention provides an online monitoring device and method for total moisture content in coal entering the furnace, which has the following beneficial effects:

[0017] 1. The online monitoring device and method for total moisture content of coal entering the furnace includes a storage bin, a first reciprocating screw, and a storage dish. Coal powder inside the storage bin enters the storage chamber through a switch valve. The output of a fourth servo motor drives a threaded shaft to rotate, causing a connecting block to move a rack upwards. This rack then drives a second transmission gear to rotate, causing the first reciprocating screw to move a second push plate. The storage dish moves into a drying chamber for drying. When the coal powder inside the storage chamber is dried, a pressure sensor obtains the weight information of the coal powder inside the storage chamber. Based on the weight of the dried coal powder and the weight of the coal powder before drying, the total moisture content of the coal entering the furnace can be obtained. This allows the monitoring device to automatically detect the total moisture content of the coal entering the furnace without the need for manual sampling and testing.

[0018] 2. The online monitoring device and method for total moisture content of coal fed into the furnace, consisting of a first conveying cylinder, a second conveying cylinder, and a receiving head, operates as follows: If the coal powder weight meets the standard, the switch valve closes; if the coal powder weight is insufficient, the solenoid valve opens, allowing coal powder from the waste bin to enter the second conveying cylinder through the solenoid valve. Then, the electromagnet closes, eliminating the repulsive magnetic field between adjacent electromagnets, causing the connecting spring to push the second moving block, moving one end of the clutch column out of the clutch slot, disengaging the clutch sleeve from the second spiral conveying shaft. Next, the output of the fifth servo motor drives the first spiral conveying shaft to rotate, pushing the raw material from the second conveying cylinder through the opened first connecting valve into the receiving box. At this point, the second connecting valve closes. Next, coal powder that does not meet the standard is processed by a coal separator, separating qualified and unqualified coal powder. When the weight of coal powder in the storage chamber reaches the required level, the switch valve closes, and then the rack drives the first... The rotation of the transmission gear causes the first transmission gear to drive the second reciprocating screw to rotate via the transmission rod and the first pulley. This causes the sliding plate to push the receiving head to the bottom of the storage box. Then, the switch valve opens, allowing coal powder to fall into the receiving head and then into the first conveying cylinder through the hose. At this time, the electromagnet is activated, creating a repulsive magnetic field between two adjacent electromagnets. This causes the second moving block to push one end of the clutch column into the clutch groove, thus connecting the clutch sleeve with the second spiral conveying shaft. At this time, the output of the fifth servo motor drives the first spiral conveying shaft to rotate. This causes the first spiral conveying shaft to rotate via the bevel gear, worm, transmission column, worm wheel, second pulley, third pulley, and clutch sleeve, allowing the second spiral conveying shaft to rotate. This causes the coal powder to enter the second conveying cylinder through the control valve and then fall onto the conveying table surface through the opened second connecting valve for conveying to other working positions. This allows for the conveying of excess coal samples, making the monitoring device more convenient to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 2 This is a side view of the first fixing plate structure of the present invention;

[0021] Figure 3 This is a side view of the vertical plate structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the second spiral conveying shaft and the clutch sleeve of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the crushing box and the guide rail of the present invention;

[0024] Figure 6 This is a side view of the guide rail structure of the present invention;

[0025] Figure 7 This is a partial structural diagram of the present invention;

[0026] Figure 8 For the present invention Figure 7 Enlarged view of point A;

[0027] Figure 9 For the present invention Figure 7 Enlarged view of point B;

[0028] Figure 10 For the present invention Figure 7 Enlarged view of point C;

[0029] Figure 11 For the present invention Figure 1 Enlarged view of point D.

[0030] In the diagram: 1. First base plate; 2. Conveyor; 3. First fixed plate; 4. First rotating roller; 5. Second rotating roller; 6. Conveyor belt; 7. First push plate; 8. First servo motor; 9. Connecting frame; 10. Fixed box; 11. Guide plate; 12. Receiving box; 13. Crushing box; 14. Crushing roller; 15. Feed inlet; 16. Guide rail; 17. First moving block; 18. Threaded column; 19. Discharge hopper; 20. Coal separator; 21. First guide head; 22. Second guide head; 23. Waste bin; 24. 25. Storage bin; 26. Switch valve; 27. Vertical plate; 28. First conveyor roller; 29. ​​Second conveyor roller; 30. Conveyor belt; 31. Second servo motor; 32. Track; 33. First reciprocating screw; 34. Second push plate; 35. Second base plate; 36. Mounting plate; 37. Storage dish; 38. Storage cavity; 39. Mounting block; 40. Mounting groove; 41. Bidirectional threaded rod; 42. Third servo motor; 43. Clamping post; 44. Clamping groove; 45. Fixed post; 46. Second reciprocating screw; 47. Slide 47. Plate; 48. Receiving head; 49. Connecting column; 50. Fourth servo motor; 51. Threaded shaft; 52. Connecting block; 53. Rack; 54. Second fixing plate; 55. Transmission rod; 56. First pulley; 57. First transmission gear; 58. Second transmission gear; 59. Pressure sensor; 60. Drying oven; 61. Through groove; 62. First conveying cylinder; 63. Hose; 64. Second conveying cylinder; 65. First spiral conveying shaft; 66. Solenoid valve; 67. Second spiral conveying shaft; 68. Fifth servo motor Servo motor; 68. Fixed block; 69. Transmission column; 70. Limit block; 71. Worm gear; 72. Clutch sleeve; 73. Second pulley; 74. Third pulley; 75. Worm; 76. Bevel gear; 77. Control valve; 78. First connecting valve; 79. Second connecting valve; 80. Conveyor table; 81. Moving groove; 82. Second moving block; 83. Clutch column; 84. Clutch groove; 85. Connecting spring; 86. Electromagnet; 87. Transmission shaft; 88. Fourth pulley; 89. Sixth servo motor. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Example 1

[0033] Please see Figures 1 to 3 and Figures 5 to 9This invention provides a technical solution: an online monitoring device for the total moisture content of coal entering the furnace, comprising a first base plate 1, a conveyor 2 fixedly connected to the top of the first base plate 1, two first fixed plates 3 disposed on the top of the first base plate 1 and above the conveyor 2, connecting frames 9 disposed on both sides of the two first fixed plates 3, the bottom ends of the connecting frames 9 being connected to the top of the first base plate 1, a first rotating roller 4 rotatably connected between the two first fixed plates 3, a second rotating roller 5 rotatably connected between the two first fixed plates 3 and on one side of the first rotating roller 4, the first rotating roller 4 and the second rotating roller 5 being connected by a conveyor belt 6, a first servo motor 8 disposed on one side of one of the first fixed plates 3, the output end of the first servo motor 8 being connected to one end of the second rotating roller 5, and the top of the first base plate 1 and above the conveyor 2 being connected to the conveyor 2. A fixed box 10 is provided on the side, a guide plate 11 is provided on the top of the fixed box 10, a receiving box 12 is provided on the top of the fixed box 10, a crushing box 13 is provided inside the fixed box 10, a feed inlet 15 is provided on the top of the crushing box 13, and the top of the feed inlet 15 extends above the receiving box 12. Two crushing rollers 14 are rotatably connected inside the crushing box 13. A coal separator 20 is provided inside the fixed box 10 and below the crushing box 13. A first guide head 21 is provided on one side of the coal separator 20, and a second guide head 22 is provided on the other side of the coal separator 20. Two upright plates 26 are provided inside the fixed box 10. Through slots 60 are provided on both sides of the fixed box 10. Both ends of the upright plates 26 pass through the through slots 60 and extend to the outside of the fixed box 10. A storage box 24 is provided inside the fixed box 10.

[0034] A first conveyor roller 27 is rotatably connected between two upright plates 26, and a second conveyor roller 28 is rotatably connected between the two upright plates 26 and on one side of the first conveyor roller 27. The first conveyor roller 27 and the second conveyor roller 28 are connected by a conveyor belt 29. A second servo motor 30 is provided on one side of one upright plate 26. The output end of the second servo motor 30 is connected to one end of the second conveyor roller 28. Several tracks 31 are provided on the surface of the conveyor belt 29. A first reciprocating screw 32 is rotatably connected inside each track 31. One end of each first reciprocating screw 32 extends to the outside of the track 31 and is fitted with a second transmission gear 57. A second push plate 33 is threaded to the outside of each first reciprocating screw 32. One end of each second push plate 33 extends to the outside of the track 31 to facilitate the movement of the storage dish 36.

[0035] The second push plate 33 has a second base plate 34 on one side. A pressure sensor 58 is installed on the top of the second base plate 34. A mounting plate 35 is installed at the detection end of the pressure sensor 58. A storage dish 36 is placed on the top of the mounting plate 35. Two mounting slots 39 are opened at the bottom of the storage dish 36. A mounting block 38 is installed on the top of the mounting plate 35 and inside the mounting slot 39. A mounting slot 39 is installed on one side of the inner cavity of the mounting block 38. A third servo motor 41 is installed at the output end of the mounting slot 39. A locking post 42 is threaded to the opposite side of the outer thread of the third servo motor 41. A locking groove 43 is opened inside the storage dish 36 and on both sides of the mounting block 38. One end of the locking post 42 extends into the locking groove 43. A storage cavity 37 is opened on the top of the storage dish 36 to facilitate the installation of the storage dish 36 on the surface of the mounting plate 35 and to facilitate the removal of the storage dish 36 from the surface of the mounting plate 35.

[0036] The crushing box 13 has a guide rail 16 on one side, with a threaded column 18 rotatably connected inside the guide rail 16. A first moving block 17 is threadedly connected to the outside of the threaded column 18. The bottom end of the first moving block 17 extends below the guide rail 16. A discharge hopper 19 is provided on one side of the first moving block 17. A discharge port is opened at the bottom of the crushing box 13, and a discharge outlet is opened at the bottom of the discharge hopper 19. Two sixth servo motors 89 are provided on one side of the crushing box 13. The output ends of the sixth servo motors 89 are connected to one end of the crushing roller 14. A drive shaft 87 is provided on one side of the crushing box 13. One end of the drive shaft 87 is connected to one end of a crushing roller 14. One end of the threaded column 18 extends to the outside of the guide rail 16. A fourth pulley 88 connected by a belt drive is fitted on the outside of both the threaded column 18 and the drive shaft 87, so that the coal powder can swing above the coal separator 20 and enter the coal separator 20.

[0037] Example 2

[0038] Please see Figure 1 , Figure 4 , Figure 7 , Figure 10 and Figure 11The present invention provides a technical solution: a second conveying cylinder 63 is provided inside the fixed box 10, and a first spiral conveying shaft 64 is rotatably connected inside the second conveying cylinder 63. A waste bin 23 is provided inside the fixed box 10 and below the first guide head 21. A solenoid valve 65 is provided on one side of the waste bin 23, and one end of the solenoid valve 65 extends into the second conveying cylinder 63. A first conveying cylinder 61 is fixedly connected inside the fixed box 10 and on one side of the storage bin 24. A fixed post 44 is provided on one side of the first conveying cylinder 61. A second reciprocating screw 45 is rotatably connected inside the fixed post 44. A sliding plate 46 is threadedly connected to the outer side of the second reciprocating screw 45. One end of the sliding plate 46 extends to the outer side of the fixed post 44 and is provided with... The storage bin 24 is equipped with a receiving head 47 and a connecting column 48 at the bottom of the fixed column 44. A fourth servo motor 49 is installed at the bottom of the inner cavity of the connecting column 48. A threaded shaft 50 is installed at the output end of the fourth servo motor 49. A connecting block 51 is threadedly connected to the outer side of the threaded shaft 50. One end of the connecting block 51 extends to the outer side of the connecting column 48 and is equipped with a rack 52. A second fixing plate 53 is installed at the bottom of the fixed column 44. A transmission rod 54 is rotatably connected to one side of the second fixing plate 53. A first transmission gear 56 is sleeved on one end of the transmission rod 54. A first pulley 55 connected by a belt drive is sleeved on the outer side of the second reciprocating screw 45 and the transmission rod 54, which facilitates the collection and processing of excess coal powder inside the storage bin 24.

[0039] The first conveying cylinder 61 is rotatably connected to the second spiral conveying shaft 66. A flexible hose 62 is provided on one side of the receiving head 47. One end of the flexible hose 62 extends into the first conveying cylinder 61, which can input the coal powder falling into the receiving head 47 into the first conveying cylinder 61.

[0040] The fixed box 10 contains a fixed block 68, and a limit block 70 is located inside the fixed box 10 and below the fixed block 68. The bottom end of the second spiral conveyor shaft 66 extends above the first conveyor cylinder 61, and the bottom end of the first spiral conveyor shaft 64 extends below the second conveyor cylinder 63. The fixed box 10 contains a fifth servo motor 67, the output end of which is connected to the bottom end of the first spiral conveyor shaft 64. A worm gear 75 is rotatably connected to one side of the limit block 70. Meshing bevel gears 76 are fitted on the outer sides of both the first spiral conveyor shaft 64 and the worm gear 75. A transmission column 69 is rotatably connected to the bottom of the fixed block 68. A worm gear 71, which is connected to the worm 75, is sleeved on the outer side of the transmission column 69. A clutch sleeve 72 is sleeved on the outer side of the second spiral conveying shaft 66. A third pulley 74 is sleeved on the outer side of the clutch sleeve 72. A second pulley 73, which is connected to the third pulley 74 via a belt, is sleeved on the outer side of the transmission column 69. The top of the second conveying cylinder 63 extends above the fixed box 10. A second connecting valve 79 is provided on one side of the second conveying cylinder 63. A conveying platform 80 is provided on the top of the fixed box 10. A first connecting valve 78 is provided on the other side of the second conveying cylinder 63. One end of the first connecting valve 78 extends into the receiving box 12 to facilitate the conveying of coal powder.

[0041] The second spiral conveyor shaft 66 has several moving grooves 81 inside, and a second moving block 82 is slidably connected inside each moving groove 81. A clutch post 83 is provided at one end of each second moving block 82. Several clutch grooves 84 are provided inside the clutch sleeve 72. One end of each clutch post 83 extends into the clutch groove 84. A connecting spring 85 is slidably connected inside the moving groove 81 and outside the clutch post 83. An electromagnet 86 is provided on one side of the inner cavity of the moving groove 81 and on one side of the second moving block 82 to facilitate the connection between the clutch sleeve 72 and the second spiral conveyor shaft 66.

[0042] Example 3

[0043] Please see Figures 1 to 11 This invention provides a technical solution: a method for online monitoring of total moisture content in coal fed into a furnace, comprising the following steps:

[0044] S1: Coal samples are collected from the coal conveyed on the surface of the conveyor 2. During the process of conveying coal, the output of the first servo motor 8 drives the second roller 5 to rotate, so that the second roller 5 drives the first roller 4 to rotate through the conveyor belt 6, thereby driving the first push plate 7 to push the coal on the surface of the conveyor 2 through the guide plate 11 into the receiving box 12, and then into the crushing box 13 through the feed inlet 15. The output of the sixth servo motor 89 drives the crushing roller 14 to rotate, so that the crushing roller 14 crushes the coal into coal powder, and then falls into the discharge hopper 19.

[0045] S2: Weigh the coal sample and then place it inside the drying chamber 59 for drying; the pulverizing roller 14 rotates, driving the drive shaft 87 to rotate, which in turn drives the threaded column 18 to rotate via the fourth belt pulley 88, causing the first moving block 17 to drive the discharge hopper 19 to move back and forth, thus allowing the coal powder to enter the coal separator 20. Qualified coal powder enters the storage box 24 through the second guide head 22, while unqualified coal powder enters the waste box 23 through the first guide head 21. At the same time, the output of the second servo motor 30 drives the second conveying roller 28 to rotate, which in turn drives the first conveying roller 27 to rotate via the conveyor belt 29, so that the storage dish 36 is located below the waste box 23, and then the switch valve 25 is opened. This allows the coal powder inside the storage bin 24 to enter the storage chamber 37 through the switching valve 25. The weight of the coal powder is detected by the pressure sensor 58. If the weight of the coal powder reaches the standard, the switching valve 25 closes. If the weight of the coal powder is insufficient, the solenoid valve 65 opens, allowing the coal powder inside the waste bin 23 to enter the second conveying cylinder 63 through the solenoid valve 65. Then, the electromagnet 86 closes, causing the repulsive magnetic field between the two adjacent electromagnets 86 to disappear. This causes the connecting spring 85 to push the second moving block 82 to move, causing one end of the clutch column 83 to move out of the clutch groove 84, disengaging the clutch sleeve 72 from the second spiral conveying shaft 66. Then, the output end of the fifth servo motor 67 drives the first spiral conveying shaft 64 to rotate, causing the second spiral conveying shaft 66 to rotate. A spiral conveyor shaft 64 pushes the raw material inside the second conveyor cylinder 63 through the opened first connecting valve 78 into the receiving box 12. At this time, the second connecting valve 79 closes. Then, the non-compliant coal powder is processed by the coal separator 20 to separate the qualified and unqualified coal powder. When the weight of the coal powder in the storage chamber 37 reaches the requirement, the switch valve 25 closes. At this time, the output end of the fourth servo motor 49 drives the threaded shaft 50 to rotate, causing the connecting block 51 to drive the rack 52 to move upward, causing the rack 52 to drive the second transmission gear 57 to rotate, causing the first reciprocating screw 32 to drive the second push plate 33 to move. When the rack 52 disengages from the second transmission gear 57, the storage dish 36 moves into the drying box 59 for drying. After drying, the rack 52 drives the first transmission gear 56 to rotate, which in turn drives the second reciprocating screw 45 to rotate via the transmission rod 54 and the first pulley 55. This causes the slide plate 46 to push the receiving head 47 to move below the storage box 24. Then, the switch valve 25 opens, allowing coal powder to fall into the receiving head 47 and then enter the first conveying cylinder 61 through the hose 62. At this time, the electromagnet 86 is activated, creating a repulsive magnetic field between two adjacent electromagnets 86. This causes the second moving block 82 to push one end of the clutch column 83 into the clutch groove 84, thereby connecting the clutch sleeve 72 with the second spiral conveying shaft 66. At this time, the output end of the fifth servo motor 67 drives the first spiral conveying shaft 64 to rotate.The first spiral conveyor shaft 64, via bevel gear 76, worm gear 75, drive column 69, worm wheel 71, second pulley 73, third pulley 74, and clutch sleeve 72, causes the second spiral conveyor shaft 66 to rotate. This allows pulverized coal to enter the second conveying cylinder 63 through control valve 77, and then fall onto the surface of the conveying table 80 through the open second connecting valve 79 for transport to other working positions. At this time, the first connecting valve 78 is in the closed state.

[0046] S3: The coal sample after testing is transported and cleaned; when the coal powder inside the storage chamber 37 is dried, the pressure sensor 58 obtains the weight information of the coal powder inside the storage chamber 37, so as to obtain the total moisture value of the coal entering the furnace based on the weight of the coal powder after drying and the weight of the coal powder before drying. Then, the output end of the fourth servo motor 49 drives the threaded shaft 50 to reset and rotate, so that the connecting block 51 drives the rack 52 to move down. At this time, the rack 52 drives the first transmission gear 56 to reset and rotate. At this time, the first transmission gear 56 drives the second reciprocating screw 45 to rotate through the transmission rod 54 and the first belt pulley 55, so that the second reciprocating screw 45 drives the slide plate 46 and the receiving head 47 to move. When the rack 52 and the first transmission gear 56 are disengaged, the receiving head 47 moves to its original position. Then the rack 52 drives the second transmission gear 57 to rotate, so that the second transmission gear 57 drives the first reciprocating screw 32 to rotate, so that the second push plate 33 drives the storage dish 36 to move to the outside of the drying box 59. When the transmission gear 57 disengages, the first transmission gear 56 moves to its original position. At the same time, the output end of the second servo motor 30 drives the second conveyor roller 28 to rotate, so that the second conveyor roller 28 drives the first conveyor roller 27 to rotate through the conveyor belt 29, so that the next storage dish 36 is located below the waste bin 23. Then, the operation continues according to the above steps. The operator can remove the storage dish 36 that has been moved to the outside of the fixed box 10 through the through groove 60 for cleaning. By activating the bidirectional threaded rod 40, the output end of the bidirectional threaded rod 40 drives the third servo motor 41 to rotate, so that one end of the locking pin 42 is out of the slot 43. Then, the storage dish 36 can be removed from the surface of the mounting plate 35, the coal powder inside the storage cavity 37 can be cleaned, and then the new storage dish 36 is placed on the surface of the mounting plate 35. Then, the output end of the bidirectional threaded rod 40 drives the third servo motor 41 to reset and rotate. At this time, one end of the locking pin 42 is inserted into the slot 43, and then the storage dish 36 is installed on the surface of the mounting plate 35.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for on-line monitoring of total moisture of coal into a furnace, comprising a first base plate (1), characterized in that: The top of the first bottom plate (1) is fixedly connected with a conveyor (2), the top of the first bottom plate (1) and above the conveyor (2) is provided with two first fixed plates (3), both sides of the two first fixed plates (3) are provided with connecting frames (9), the bottom ends of the connecting frames (9) are connected with the top of the first bottom plate (1), a first rotating roller (4) is rotatably connected between the two first fixed plates (3), a second rotating roller (5) is rotatably connected between the two first fixed plates (3) and on one side of the first rotating roller (4), the first rotating roller (4) and the second rotating roller (5) are drivingly connected through a conveying belt (6), one side of one of the first fixed plates (3) is provided with a first servo motor (8), one end of the second rotating roller (5) is connected with the output end of the first servo motor (8), the top of the first bottom plate (1) and on one side of the conveyor (2) is provided with a fixed box (10), the top of the fixed box (10) is provided with a guide plate (11), the top of the fixed box (10) is provided with a receiving box (12), the inside of the fixed box (10) is provided with a crushing box (13), the top of the crushing box (13) is provided with an inlet (15), the top of the inlet (15) extends above the receiving box (12), two crushing rollers (14) are rotatably connected in the crushing box (13), a coal distributor (20) is arranged in the inside of the fixed box (10) and below the crushing box (13), a first guide head (21) is arranged on one side of the coal distributor (20), a second guide head (22) is arranged on the other side of the coal distributor (20), two vertical plates (26) are arranged in the inside of the fixed box (10), through grooves (60) are formed in both sides of the fixed box (10), both ends of the vertical plates (26) respectively pass through the through grooves (60) and respectively extend to the outside of the fixed box (10), and a storage box (24) is arranged in the inside of the fixed box (10).

2. The on-line device for monitoring total moisture of coal into a furnace according to claim 1, characterized in that: A first conveying roller (27) is rotatably connected between the two vertical plates (26), a second conveying roller (28) is rotatably connected between the two vertical plates (26) and on one side of the first conveying roller (27), the first conveying roller (27) and the second conveying roller (28) are drivingly connected through a conveying belt (29), a second servo motor (30) is arranged on one side of one of the vertical plates (26), one end of the second conveying roller (28) is connected with the output end of the second servo motor (30), the surface of the conveying belt (29) is provided with a plurality of tracks (31), first reciprocating lead screws (32) are rotatably connected in the tracks (31), one end of each of the first reciprocating lead screws (32) extends to the outside of the track (31) and is sleeved with a second transmission gear (57), second push plates (33) are threadedly connected to the outside of the first reciprocating lead screws (32), one end of each of the second push plates (33) extends to the outside of the track (31).

3. The on-line device for monitoring total moisture of coal into a furnace according to claim 2, characterized in that: One side of the second push plate (33) is provided with the second bottom plate (34), the top of the second bottom plate (34) is provided with the pressure sensor (58), the detection end of the pressure sensor (58) is provided with the mounting plate (35), the top of the mounting plate (35) is placed with the storage dish (36), the bottom of the storage dish (36) is provided with two installation grooves (39), the top of the mounting plate (35) and inside the installation groove (39) are provided with the mounting block (38), one side of the mounting block (38) is provided with the installation groove (39), the output end of the installation groove (39) is provided with the third servo motor (41), the opposite positions of the outer side of the third servo motor (41) are threadedly connected with the clamping column (42), the two sides of the mounting block (38) inside the storage dish (36) are provided with the clamping groove (43), one end of the clamping column (42) extends into the clamping groove (43), and the top of the storage dish (36) is provided with the storage cavity (37).

4. The on-line device for monitoring total moisture of coal into a furnace according to claim 3, characterized in that: One side of the crushing box (13) is provided with a guide rail (16), the guide rail (16) is rotatably connected with a threaded column (18), the outer side of the threaded column (18) is threadedly connected with a first moving block (17), the bottom end of the first moving block (17) extends below the guide rail (16), one side of the first moving block (17) is provided with a discharge hopper (19), the bottom of the discharge hopper (19) is provided with a discharge port, the bottom of the discharge hopper (19) is provided with a discharge port, one side of the crushing box (13) is provided with two sixth servo motors (89), the output end of the sixth servo motor (89) is connected with one end of the crushing roller (14), one side of the crushing box (13) is provided with a transmission shaft (87), one end of the transmission shaft (87) is connected with one end of the crushing roller (14), one end of the threaded column (18) extends to the outer side of the guide rail (16), and the outer sides of the threaded column (18) and the transmission shaft (87) are both provided with a fourth belt pulley (88) connected through a belt transmission.

5. The on-line device for monitoring total moisture of coal into a furnace according to claim 4, characterized in that: The inside of the fixed box (10) is provided with a second feeding cylinder (63), the first screw feeding shaft (64) is rotatably connected in the second feeding cylinder (63), the waste box (23) is arranged below the first guide head (21) in the fixed box (10), the electromagnetic valve (65) is arranged on one side of the waste box (23), one end of the electromagnetic valve (65) extends to the inside of the second feeding cylinder (63), the first feeding cylinder (61) is fixedly connected to one side of the storage box (24) in the fixed box (10), the fixed column (44) is arranged on one side of the first feeding cylinder (61), the second reciprocating screw rod (45) is rotatably connected in the fixed column (44), the slide plate (46) is screw connected to the outer side of the second reciprocating screw rod (45), one end of the slide plate (46) extends to the outside of the fixed column (44) and is provided with the receiving head (47), the connecting column (48) is arranged at the bottom of the fixed column (44), the fourth servo motor (49) is arranged in the inner cavity of the connecting column (48), the threaded shaft (50) is arranged at the output end of the fourth servo motor (49), the connecting block (51) is screw connected to the outer side of the threaded shaft (50), one end of the connecting block (51) extends to the outside of the connecting column (48) and is provided with the rack (52), the second fixed plate (53) is arranged at the bottom of the fixed column (44), the transmission rod (54) is rotatably connected to one side of the second fixed plate (53), the first transmission gear (56) is sleeved at one end of the transmission rod (54), the first belt pulley (55) driven by a belt is sleeved on the outer side of the second reciprocating screw rod (45) and the transmission rod (54).

6. The on-line device for monitoring total moisture of coal into a furnace according to claim 5, characterized in that: The second screw feeding shaft (66) is rotatably connected in the first feeding cylinder (61), the hose (62) is arranged on one side of the receiving head (47), and one end of the hose (62) extends to the inside of the first feeding cylinder (61).

7. The on-line device for monitoring total moisture of coal into a furnace according to claim 6, characterized in that: The fixed box (10) is internally provided with a fixed block (68), the fixed box (10) is internally provided with a limiting block (70) below the fixed block (68), the bottom end of the second spiral conveying shaft (66) extends above the first conveying cylinder (61), the bottom end of the first spiral conveying shaft (64) extends below the second conveying cylinder (63), the fixed box (10) is internally provided with a fifth servo motor (67), the output end of the fifth servo motor (67) is connected with the bottom end of the first spiral conveying shaft (64), one side of the limiting block (70) is rotatably connected with a worm (75), the first spiral conveying shaft (64) and the outer side of the worm (75) are both provided with meshing bevel gears (76), the bottom of the fixed block (68) is rotatably connected with a transmission column (69), the outer side of the transmission column (69) is provided with a worm wheel (71) in transmission connection with the worm (75), the outer side of the second spiral conveying shaft (66) is provided with a clutch sleeve (72), the outer side of the clutch sleeve (72) is provided with a third belt pulley (74), the outer side of the transmission column (69) is provided with a second belt pulley (73) in transmission connection with the third belt pulley (74) through a belt, the top of the second conveying cylinder (63) extends above the fixed box (10), one side of the second conveying cylinder (63) is provided with a second connecting valve (79), the top of the fixed box (10) is provided with a conveying table (80), the other side of the second conveying cylinder (63) is provided with a first connecting valve (78), one end of the first connecting valve (78) extends into the receiving box (12).

8. The on-line device for monitoring total moisture of coal into a furnace according to claim 7, characterized in that: The second spiral conveying shaft (66) is internally provided with a plurality of moving grooves (81), the moving grooves (81) are all slidably connected with second moving blocks (82), one end of the second moving blocks (82) is all provided with clutch columns (83), the inner side of the clutch sleeve (72) is provided with a plurality of clutch grooves (84), one end of the clutch columns (83) all extends into the clutch grooves (84), the inner side of the moving grooves (81) and the outer side of the clutch columns (83) are all slidably connected with connecting springs (85), one side of the moving grooves (81) and one side of the second moving blocks (82) are all provided with electromagnets (86).

9. A method for on-line monitoring of total moisture of coal fed to a furnace, characterized by: The application is applied to the coal full water content online monitoring device of claim 1-8, including the following steps: S1: coal sample collection is performed on the coal conveyed on the surface of the conveyor (2), in the process of conveying the coal by the conveyor (2), the output end of the first servo motor (8) drives the second rotating roller (5) to rotate, so that the second rotating roller (5) drives the first rotating roller (4) to rotate through the conveying belt (6), thereby driving the first push plate (7) to push the coal on the surface of the conveyor (2) to enter the receiving box (12) through the guide plate (11), and then enter the crushing box (13) through the feeding port (15), the output end of the sixth servo motor (89) drives the crushing roller (14) to rotate, so that the crushing roller (14) crushes the coal into coal powder, and then falls into the discharge hopper (19); S2: the coal sample is weighed, and then placed in the drying box (59) for drying; S3: the coal sample after detection is conveyed and cleaned.

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