A fuel feeding mechanism for a thermal power production boiler

Abstract

The present invention discloses a fuel feeding mechanism for a thermal power production boiler, which belongs to the field of boiler combustion, and includes a boiler body, a charging bin is fixedly connected to the upper surface of the boiler body, a feeding port is opened on one side of the upper surface of the charging bin, a grinding assembly for grinding coal blocks is used on the upper surface of the charging bin, and a waste heat utilization assembly is fixedly connected to the top of the boiler body. It can be achieved that when a large piece of coal is ground into smaller particles through the cooperation of a grinding block and a bucket-shaped grinding plate, the overall area of ​​the smaller coal becomes larger, and it can be burned more fully inside the boiler body. At the same time, the support rod is pulled up and down inside the through groove to drive the grinding block to move in position. The diameter of the ground coal particles can be adjusted by adjusting the distance between the grinding block and the bucket-shaped grinding plate, and the particle size can be selected according to actual conditions.

Description

Technical Field

[0001] The invention relates to the field of boiler combustion, and more specifically to a fuel feeding mechanism for a thermal power production boiler. Background Art

[0002] At present, most of the coal used for combustion in various boilers, reverberatory furnaces, and drying kilns is directly fed into the furnaces for combustion. Since the raw coal contains a large amount of coal particles and the inlet of the feeding mechanism is small, the coal can easily block the inlet of the feeding mechanism, which can easily cause a lack of fuel inside the boiler and fail to reach the required temperature.

[0003] In order to solve the problem that coal lumps in the boiler can easily block the inlet of the feeding mechanism, Chinese patent application No. CN117847561A discloses a fuel feeding device for a thermal production boiler. The device uses a first bevel gear, a second bevel gear and a third bevel gear to drive the second shaft to rotate a stirring rod to stir the fuel inside the discharge funnel, thereby ensuring that the fuel falls smoothly into the guide pipe and reducing the phenomenon that the fuel blocks the inlet of the feeding mechanism. However, during the actual use of the boiler, when the boiler is burning, due to the different diameters of the fed coal, some large pieces of coal are prone to incomplete combustion during combustion, and thus a large amount of carbon monoxide is easily generated. The carbon monoxide floating in the air can cause poisoning to construction workers, and due to the incomplete combustion of the coal, when the same temperature is generated, a much larger amount of coal than normal combustion is required, resulting in a waste of resources. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a fuel feeding mechanism for a thermal production boiler.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A fuel feeding mechanism for a thermal production boiler comprises a boiler body, the upper surface of the boiler body being fixedly connected to a feeding bin, one side of the upper surface of the feeding bin being provided with a feeding port, the upper surface of the feeding bin being used for a grinding component for grinding coal blocks, and a waste heat utilization component being fixedly connected to the top of the boiler body.

[0007] The grinding assembly includes a driving motor fixed in the middle of the upper surface of the feeding bin, a discharging hopper fixed in the middle of the inner surface of the feeding bin, an annular groove fixed at the bottom of the inner surface of the feeding bin and a crushing assembly sliding in the middle of the inner surface of the feeding bin, the output end of the driving motor is fixedly connected to a rotating sleeve, the outer side of the rotating sleeve is symmetrically provided with through grooves, the top of the outer surface of the rotating sleeve is provided with a thread, the outer surface of the thread is threadedly connected with an internally threaded sleeve, the inside of the through groove is slidably connected with a support rod, the inside of the rotating sleeve is provided with a connecting rod, the bottom of the connecting rod is fixedly connected to a grinding block, the edge of the lower surface of the grinding block is provided with a material baffle plate, the lower surface of the discharging hopper is fixedly connected to a bucket-shaped grinding plate, a pushing assembly is provided in the middle of the lower surface of the grinding block, and a discharge port is provided at the bottom of the annular groove.

[0008] Furthermore, the internal threaded sleeve is located below the support rod, the bottom of the rotating sleeve extends to the interior of the feeding bin, the grinding block is located between the bucket-shaped grinding plate and the annular groove, there are four discharge ports and baffle plates, the baffle plate is located inside the annular groove and above the discharge port, one side of the support rod is fixedly connected to the outer surface of the connecting rod, and a scale is provided on the inner side of the through groove.

[0009] Furthermore, the crushing assembly includes two sliding rods sliding on the inner surface of the feeding bin and a first driving slider symmetrically fixed in the middle of the outer surface of the rotating sleeve. The two sliding rods are fixedly connected to a swing sleeve on one side close to each other. A wavy groove is provided on the inner surface of the swing sleeve, and a crushing rod is provided on the lower surface of the swing sleeve.

[0010] Furthermore, one side of the first driving slider extends to slide inside the wavy groove, the bottom of the crushing rod is conical, and the wavy groove is located at the center of the discharge hopper.

[0011] Furthermore, the pusher assembly includes a first transmission shaft fixed at the middle of the lower surface of the grinding block and four fixed plates fixed to the lower surface of the annular groove, the bottom of the first transmission shaft is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a circular ring, the inner surface of the circular ring is symmetrically fixedly connected to a triangular block, the interior of the fixed plate is slidably connected to a telescopic rod, one side of the telescopic rod is fixedly connected to a pusher plate, the outer surface of the telescopic rod is fixedly connected to a cylinder, and the outer surface of the telescopic rod is sleeved with a spring.

[0012] Furthermore, the spring is located between the push plate and the fixed plate, the cylinder is located inside the circular ring, the first transmission shaft passes through the inside of the annular groove, and the push plate is located directly below the discharge port.

[0013] Furthermore, the waste heat utilization component includes two guide pipes fixed on the top of the boiler body and a drying cylinder fixed inside the discharge hopper, the two guide pipes are fixedly connected to a conical cylinder on one side close to each other, and the two conical cylinders are fixedly connected to a heating pipe on one side close to each other, and the outer surface of the heating pipe is slidably connected to a scraping component.

[0014] Furthermore, the other end of the heating tube extends to the inside of a cavity formed between the bucket-shaped grinding plate and the discharge hopper, and the inside of the drying cylinder is communicated with the wall.

[0015] Furthermore, the scraping assembly includes a second transmission shaft fixed on the lower surface of the connecting plate and a plurality of scraper rings sliding on the outer surface of the heating tube, a circular plate is fixedly connected to the bottom of the second transmission shaft, a second driving slider is fixedly connected to the bottom edge of the circular plate, one of the outer surfaces of the second transmission shaft is fixedly connected to a slide rail, and a mounting rod is arranged inside the second transmission shaft.

[0016] Furthermore, the slide rail is located below the circular plate, the second driving slider is located inside the slide rail and slides, and the plurality of scraper rings are fixedly connected to each other via mounting rods.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This solution sets a grinding assembly. Large pieces of coal are ground into smaller particles through the cooperation of the grinding block and the bucket-shaped grinding plate, so that the overall area of ​​the smaller coal becomes larger, and it can be burned more fully inside the boiler body. At the same time, the support rod is pulled up and down inside the through groove to drive the grinding block to move in position. The diameter of the ground coal particles can be adjusted by adjusting the distance between the grinding block and the bucket-shaped grinding plate, and the particle size can be selected according to actual conditions.

[0019] 2. This scheme sets up a crushing assembly, and the wavy groove of the first driving slider is wavy, so that the swing sleeve will continuously move up and down, and the swing sleeve drives four crushing rods to move up and down at the same time. While moving up and down, the crushing rods continuously hit the large pieces of coal stuck between the discharge hopper and the grinding block, and break the large pieces of coal into small pieces, so that the coal can smoothly enter between the grinding block and the bucket-shaped grinding plate for grinding.

[0020] 3. This scheme sets a pushing assembly. With the cooperation of the triangular block and the cylinder, the cylinder pulls the telescopic rod to the center of the circle. Under the elastic force of the spring, the pushing plate is quickly reset to push the coal falling from the discharge port to various positions at the bottom of the boiler body, so that the coal falls evenly on the bottom of the boiler body, which can fully burn the coal to the greatest extent, reduce the generation of carbon monoxide, and further improve the combustion efficiency of the coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the feeding bin of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the feeding bin of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the grinding assembly of the present invention;

[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the swing sleeve of the present invention;

[0027] Figure 7 The pusher assembly structure of the present invention is schematically shown in FIG. Figure 1 ;

[0028] Figure 8 The pusher assembly structure of the present invention is schematically shown in FIG. Figure 2 ;

[0029] Fig. 9 This is a schematic diagram of the structure of the waste heat utilization component of the present invention;

[0030] Fig.10 It is a schematic diagram of the structure of the scraping component of the present invention;

[0031] Fig.11 It is a schematic diagram of the scraper ring structure of the present invention.

[0032] Description of the numbers in the figure:

[0033] 1. Boiler body; 2. Feeding bin; 3. Feeding port;

[0034] 4. Grinding assembly; 41. Driving motor; 42. Discharging hopper; 43. Rotating sleeve; 44. Grinding block;

[0035] 45. Crushing assembly; 451. Sliding rod; 452. Swinging sleeve; 453. First driving slider; 454. Crushing rod; 455. Wave-shaped groove;

[0036] 46. ​​Bucket-shaped grinding plate;

[0037] 47, pusher assembly; 471, first transmission shaft; 472, ring; 473, connecting plate; 474, telescopic rod; 475, pusher plate; 476, spring; 477, fixing plate; 478, cylinder; 479, triangular block;

[0038] 48, annular groove; 49, connecting rod; 410, discharge port; 411, baffle plate; 412, support rod; 413, through groove; 414, internal threaded sleeve; 415, thread;

[0039] 5. Waste heat utilization component; 51. Flow guide pipe; 52. Heating pipe; 53. Drying cylinder; 54. Conical cylinder;

[0040] 55. Scraping assembly; 551. Second transmission shaft; 552. Circular plate; 553. Slide rail; 554. Second driving slider; 555. Scraping ring; 556. Mounting rod. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 11 A fuel feeding mechanism for a thermal production boiler comprises a boiler body 1, a charging bin 2 is fixedly connected to the upper surface of the boiler body 1, a feeding port 3 is opened on one side of the upper surface of the charging bin 2, a grinding component 4 for grinding coal blocks is arranged on the upper surface of the charging bin 2, and a waste heat utilization component 5 is fixedly connected to the top of the boiler body 1.

[0043] like Figure 2 - Figure 5 As shown, the grinding assembly 4 includes a driving motor 41 fixed at the middle of the upper surface of the feeding bin 2, a discharging hopper 42 fixed at the middle of the inner surface of the feeding bin 2, an annular groove 48 fixed at the bottom of the inner surface of the feeding bin 2 and a crushing assembly 45 sliding at the middle of the inner surface of the feeding bin 2, the output end of the driving motor 41 is fixedly connected to a rotating sleeve 43, the outer side of the rotating sleeve 43 is symmetrically provided with through grooves 413, the top of the outer surface of the rotating sleeve 43 is provided with a thread 415, the outer surface of the thread 415 is threadedly connected with an internal threaded sleeve 414, the inside of the through groove 413 is slidably connected with a support rod 412, the inside of the rotating sleeve 43 is sleeved with a connecting rod 49, the bottom of the connecting rod 49 is fixedly connected to a grinding block 44, the lower surface edge of the grinding block 44 is provided with a material blocking plate 411, the lower surface of the discharging hopper 42 is fixedly connected to a bucket-shaped grinding plate 46, a pushing assembly 47 is provided in the middle of the lower surface of the grinding block 44, and a discharging port 410 is provided at the bottom of the annular groove 48.

[0044] The internal threaded sleeve 414 is located below the support rod 412, the bottom of the rotating sleeve 43 extends to the inside of the feeding bin 2, the grinding block 44 is located between the bucket-shaped grinding plate 46 and the annular groove 48, there are four discharge ports 410 and baffle plates 411, the baffle plate 411 is located inside the annular groove 48 and above the discharge port 410, one side of the support rod 412 is fixedly connected to the outer surface of the connecting rod 49, and a scale is provided on the inner side of the through groove 413.

[0045] When adding coal to the inside of the boiler, the required coal is added to the inside of the charging bin 2 through the feed port 3, and the driving motor 41 is turned on to drive the rotating sleeve 43 to rotate synchronously. The rotating sleeve 43 can drive the connecting rod 49 to rotate through the cooperation of the two support rods 412 and the through groove 413. The connecting rod 49 drives the grinding block 44 to rotate at a high speed under the bucket-shaped grinding plate 46. At this time, the coal in the charging bin 2 flows to the grinding block 44 through the discharge hopper 42, and the large pieces of coal are ground into smaller particles through the cooperation of the grinding block 44 and the bucket-shaped grinding plate 46, so that the overall area of ​​the smaller coal becomes larger, which can be In order to make the combustion inside the boiler body 1 more complete, the diameter of the ground coal particles can be adjusted by adjusting the distance between the grinding block 44 and the bucket-shaped grinding plate 46. The two internally threaded sleeves 414 are pulled to drive the connecting rod 49 to move inside the rotating sleeve 43, thereby driving the grinding block 44 to move up and down. The scale on the inside of the through groove 413 is observed, and the support rod 412 is adjusted to a suitable position. The internally threaded sleeve 414 is rotated with the cooperation of the thread 415 to contact the bottom of the support rod 412 on the outer side of the rotating sleeve 43, and the two support rods 412 are supported to complete the size of the diameter of the ground coal particles.

[0046] like Figure 3 , Figure 4 and Figure 6 As shown, the crushing assembly 45 includes two sliding rods 451 sliding on the inner surface of the charging bin 2 and a first driving slider 453 symmetrically fixed at the middle of the outer surface of the rotating sleeve 43. The two sliding rods 451 are fixedly connected to a swing sleeve 452 on one side close to each other. A wavy groove 455 is provided on the inner surface of the swing sleeve 452, and a crushing rod 454 is provided on the lower surface of the swing sleeve 452.

[0047] One side of the first driving slider 453 extends to slide inside the wavy groove 455 . The bottom of the crushing rod 454 is conical, and the wavy groove 455 is located at the center of the discharge hopper 42 .

[0048] When grinding large-diameter coal, it is easy to get stuck between the grinding block 44 and the discharge hopper 42 due to its large size, resulting in only a small part of the coal being able to smoothly enter between the grinding block 44 and the bucket-shaped grinding plate 46, greatly reducing the efficiency of boiler feeding. Therefore, when the rotating sleeve 43 rotates synchronously, the two first driving sliders 453 are driven to slide inside the wavy groove 455. Since the first driving slider 453 can only rotate at a fixed horizontal height, and the wavy groove 455 is wavy, the swing sleeve 4 52 will continuously move up and down, driving the sliding rod 451 to slide on the inner surface of the charging bin 2, and the swinging sleeve 452 will simultaneously drive the four crushing rods 454 to move up and down. While the crushing rods 454 move up and down, they continuously hit the large pieces of coal stuck between the discharge hopper 42 and the grinding block 44, breaking the large pieces of coal into small pieces, so that the coal can smoothly enter between the grinding block 44 and the bucket-shaped grinding plate 46 for grinding. At the same time, the crushing rods 454 move up and down, which to a certain extent promotes the discharge of materials.

[0049] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the pusher assembly 47 includes a first transmission shaft 471 fixed at the middle of the lower surface of the grinding block 44 and four fixed plates 477 fixed on the lower surface of the annular groove 48, the bottom of the first transmission shaft 471 is fixedly connected with a connecting plate 473, the bottom of the connecting plate 473 is fixedly connected with a circular ring 472, the inner surface of the circular ring 472 is symmetrically fixedly connected with a triangular block 479, the interior of the fixed plate 477 is slidably connected with a telescopic rod 474, one side of the telescopic rod 474 is fixedly connected with a pusher plate 475, the outer surface of the telescopic rod 474 is fixedly connected with a cylinder 478, and the outer surface of the telescopic rod 474 is sleeved with a spring 476.

[0050] The spring 476 is located between the push plate 475 and the fixed plate 477 , the cylinder 478 is located inside the ring 472 , the first transmission shaft 471 passes through the inside of the annular groove 48 , and the push plate 475 is located directly below the discharge port 410 .

[0051] When large pieces of coal are ground into small particles, the coal can be burned more fully inside the boiler body 1. However, when the coal enters the boiler body 1, its falling trajectory is consistent, causing the coal to accumulate at the inner bottom of the boiler body 1. The coal inside the boiler body 1 is not fully burned and is covered by the falling coal. There is still a situation of incomplete combustion. For this reason, after the coal is ground, it will all enter the annular groove 48. The grinding block 44 drives the baffle plate 411 to slide inside the annular groove 48 to open the discharge port 410. The coal inside the annular groove 48 falls through the discharge port 410. At this time, the first transmission shaft 471 drives the ring 472 to move through the connecting plate 473. The circular ring 472 drives the two triangular blocks 479 to rotate synchronously. The hypotenuse of the triangular block 479 will contact the cylinder 478, and the telescopic rod 474 will be pulled toward the center of the circular ring 472 through the cylinder 478. The spring 476 will be compressed by the pushing plate 475. When the triangular block 479 passes through the cylinder 478, the cylinder 478 loses its support. Under the elastic force of the spring 476, the pushing plate 475 is pushed to quickly reset, pushing the coal falling from the discharge port 410 to various positions of the bottom of the boiler body 1, so that the coal falls evenly on the bottom of the boiler body 1, which can fully burn the coal to a great extent, reduce the generation of carbon monoxide, and further improve the combustion efficiency of the coal.

[0052] like Figure 2 and Fig. 9 As shown, the waste heat utilization component 5 includes two guide tubes 51 fixed on the top of the boiler body 1 and a drying cylinder 53 fixed inside the discharge hopper 42, and the two guide tubes 51 are fixedly connected to a conical cylinder 54 on one side close to each other, and the two conical cylinders 54 are fixedly connected to a heating tube 52 on one side close to each other, and the outer surface of the heating tube 52 is slidably connected to a scraping component 55.

[0053] The other end of the heating tube 52 extends to the inside of the cavity formed between the bucket-shaped grinding plate 46 and the discharge hopper 42, and the inside of the drying cylinder 53 is communicated with the wall.

[0054] When the boiler body 1 is burning, one of the factors that affect the efficiency and temperature of the combustion inside the boiler body 1 is that the coal contains a large amount of water, which will absorb the heat inside the boiler body 1 and evaporate, and will take away part of the heat inside the boiler body 1, thereby affecting the combustion of the coal;

[0055] When the coal enters the charging bin 2, the heating tube 52 is heated by the heat inside the boiler body 1. At this time, the heat will quickly heat up the air inside the heating tube 52, so that the heat enters the cavity between the discharge hopper 42 and the bucket-shaped grinding plate 46 through the guide tube 51, and then enters the drying cylinder 53, so that the drying cylinder 53 contains a large amount of heat. The heat is transferred through the drying cylinder 53 to heat up the inside of the charging bin 2. The high temperature can evaporate most of the moisture in the coal, so that when the coal is subsequently burned, it will not affect the temperature inside the boiler body 1, thereby improving the combustion efficiency of the coal.

[0056] like Fig.10 and Fig.11 As shown, the scraping assembly 55 includes a second transmission shaft 551 fixed on the lower surface of the connecting plate 473 and a plurality of scraper rings 555 sliding on the outer surface of the heating tube 52, a circular plate 552 is fixedly connected to the bottom of the second transmission shaft 551, a second driving slider 554 is fixedly connected to the bottom edge of the circular plate 552, one of the outer surfaces of the second transmission shafts 551 is fixedly connected to the slide rail 553, and a mounting rod 556 is arranged inside the second transmission shaft 551.

[0057] The slide rail 553 is located below the circular plate 552 , the second driving slider 554 is located inside the slide rail 553 and slides, and the plurality of scraper rings 555 are fixedly connected to each other via mounting rods 556 .

[0058] When the heating tube 52 is inside the boiler body 1 for a long time, a large amount of soot will adhere to the surface of the heating tube 52. As the thickness of the soot increases, the heat conduction efficiency of the heating tube 52 will decrease, thereby affecting the temperature inside the drying cylinder 53 and the effect of evaporating the water inside the coal. For this reason, when the connecting plate 473 rotates, the circular plate 552 is driven to rotate by the second transmission shaft 551, and the circular plate 552 drives the second driving slider 554 to perform a circular motion. The second driving slider 554 drives the slide rail 553 to move back and forth in a left and right cycle. The slide rail 553 drives multiple scraper rings 555 to slide on the outside of the heating tube 52. The scraper ring 555 scrapes the soot on the outer surface of the heating tube 52, thereby ensuring the heat conduction efficiency of the heating tube 52 and improving the temperature inside the heating tube 52.

[0059] Instructions for use: First, the coal in the charging bin 2 flows to the grinding block 44 through the discharge hopper 42, and the large pieces of coal are ground into smaller particles through the grinding block 44 and the bucket-shaped grinding plate 46, so that the overall area of ​​the smaller coal becomes larger, and it can be burned more fully inside the boiler body 1; at the same time, the support rod 412 is pulled to move inside the through groove 413, and the distance between the grinding block 44 and the bucket-shaped grinding plate 46 can be adjusted, and the diameter of the ground coal particles can be adjusted, which can be selected according to the actual situation. The two first driving sliders 453 slide inside the wavy groove 455. Since the first driving slider 453 can only rotate at a fixed horizontal height, and the wavy groove 455 is wavy, the swing sleeve 452 will continuously move up and down, and the swing sleeve 452 simultaneously drives the four crushing rods 454 The crushing rod 454 moves up and down, and while moving up and down, it continuously strikes the large pieces of coal stuck between the discharge hopper 42 and the grinding block 44, breaking the large pieces of coal into small pieces of coal for subsequent grinding; the triangular block 479 cooperates with the cylinder 478, and the cylinder 478 pulls the telescopic rod 474 to approach the center of the circle 472, and compresses the spring 476 through the push plate 475. When the triangular block 479 passes through the cylinder 478, the cylinder 478 loses its support. Under the elastic force of the spring 476, the push plate 475 is pushed to quickly reset, pushing the coal falling inside the discharge port 410 to various positions at the bottom of the boiler body 1, so that the coal falls evenly on the bottom of the boiler body 1, which can fully burn the coal to a great extent, reduce the generation of carbon monoxide, and further improve the combustion efficiency of the coal.

[0060] Then, since the heating tube 52 will be heated and heated by the heat inside the boiler body 1, the heat will quickly heat up the air inside the heating tube 52, so that the heat enters into the cavity between the discharge hopper 42 and the bucket-shaped grinding plate 46 through the guide tube 51, and then enters into the drying cylinder 53, so that the interior of the drying cylinder 53 contains a large amount of heat. The heat is transferred through the drying cylinder 53 to heat up the interior of the charging bin 2. The high temperature can evaporate most of the moisture inside the coal. Through the mutual cooperation between the various components of the scraping assembly 55, multiple scraping rings 555 can be driven to slide on the outside of the heating tube 52 to scrape off the ash on the outside of the heating tube 52.

[0061] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fuel feeding mechanism for a thermal power production boiler, comprising a boiler body (1), a feeding bin (2) being fixedly connected to the upper surface of the boiler body (1), and a feeding port (3) being provided on one side of the upper surface of the feeding bin (2); Features: The upper surface of the charging bin (2) is provided with a grinding assembly (4) for grinding coal blocks; The grinding assembly (4) comprises a driving motor (41) fixed at the middle of the upper surface of the feeding bin (2), a discharging hopper (42) fixed at the middle of the inner surface of the feeding bin (2), and an annular groove (48) fixed at the bottom of the inner surface of the feeding bin (2); the output end of the driving motor (41) is fixedly connected to a rotating sleeve (43); the outer side of the rotating sleeve (43) is symmetrically provided with through grooves (413); the top of the outer surface of the rotating sleeve (43) is provided with a thread (415); the outer side of the thread (415) is The surface is threadedly connected with an internal threaded sleeve (414), the interior of the through groove (413) is slidably connected with a support rod (412), the interior of the rotating sleeve (43) is sleeved with a connecting rod (49), the bottom of the connecting rod (49) is fixedly connected with a grinding block (44), the lower surface edge of the grinding block (44) is provided with a material blocking plate (411), the lower surface of the discharge hopper (42) is fixedly connected with a bucket-shaped grinding plate (46), and the inner bottom of the annular groove (48) is provided with a discharge port (410); A crushing assembly (45) is slidably connected to the middle of the inner surface of the feeding bin (2), and the crushing assembly (45) comprises two sliding rods (451) sliding on the inner surface of the feeding bin (2) and a first driving slider (453) symmetrically fixed to the middle of the outer surface of the rotating sleeve (43); a swing sleeve (452) is fixedly connected to one side of the two sliding rods (451) close to each other, a wavy groove (455) is provided on the inner surface of the swing sleeve (452), and a crushing rod (454) is provided on the lower surface of the swing sleeve (452); One side of the first driving slider (453) extends to slide inside the wavy groove (455), the bottom of the crushing rod (454) is conical, and the wavy groove (455) is located at the center of the discharge hopper (42); A pusher assembly (47) is provided in the middle of the lower surface of the grinding block (44), and the pusher assembly (47) comprises a first transmission shaft (471) fixed in the middle of the lower surface of the grinding block (44) and four fixed plates (477) fixed on the lower surface of the annular groove (48), the bottom of the first transmission shaft (471) is fixedly connected to a connecting plate (473), the bottom of the connecting plate (473) is fixedly connected to a circular ring (472), the inner surface of the circular ring (472) is symmetrically fixedly connected to a triangular block (479), the interior of the fixed plate (477) is slidably connected to a telescopic rod (474), one side of the telescopic rod (474) is fixedly connected to a pusher plate (475), the outer surface of the telescopic rod (474) is fixedly connected to a cylinder (478), and the outer surface of the telescopic rod (474) is sleeved with a spring (476).

2. A fuel feeding mechanism for a thermal power production boiler according to claim 1, characterized in that: The internally threaded sleeve (414) is located below the support rod (412), the bottom of the rotating sleeve (43) extends to the inside of the feeding bin (2), the grinding block (44) is located between the bucket-shaped grinding plate (46) and the annular groove (48), the number of the discharge port (410) and the baffle plate (411) is four, the baffle plate (411) is located inside the annular groove (48) and above the discharge port (410), one side of the support rod (412) is fixedly connected to the outer surface of the connecting rod (49), and the inner side of the through groove (413) is provided with a scale.

3. A fuel feeding mechanism for a thermal power production boiler according to claim 2, characterized in that: The spring (476) is located between the push plate (475) and the fixed plate (477), the cylinder (478) is located inside the ring (472), the first transmission shaft (471) passes through the inside of the annular groove (48), and the push plate (475) is located directly below the discharge port (410).

4. A fuel feeding mechanism for a thermal power production boiler according to claim 3, characterized in that: A waste heat utilization component (5) is fixedly connected to the top of the boiler body (1), and the waste heat utilization component (5) comprises two guide tubes (51) fixed to the top of the boiler body (1) and a drying cylinder (53) fixed inside the discharge hopper (42); a conical cylinder (54) is fixedly connected to one side of the two guide tubes (51) close to each other; a heating tube (52) is fixedly connected to one side of the two conical cylinders (54) close to each other; and a scraping component (55) is slidably connected to the outer surface of the heating tube (52).

5. A fuel feeding mechanism for a thermal power production boiler according to claim 4, characterized in that: The other end of the heating tube (52) extends to the inside of a cavity formed between the bucket-shaped grinding plate (46) and the discharge hopper (42), and the inside of the drying cylinder (53) is communicated with the cavity.

6. A fuel feeding mechanism for a thermal power production boiler according to claim 5, characterized in that: The scraping assembly (55) comprises a second transmission shaft (551) fixed to the lower surface of the connecting plate (473) and a plurality of scraping rings (555) sliding on the outer surface of the heating tube (52); a circular plate (552) is fixedly connected to the bottom of the second transmission shaft (551); a second driving sliding block (554) is fixedly connected to the bottom edge of the circular plate (552); a sliding rail (553) is fixedly connected to the outer surface of one of the second transmission shafts (551); and a mounting rod (556) is arranged inside the second transmission shaft (551).

7. A fuel feeding mechanism for a thermal power production boiler according to claim 6, characterized in that: The slide rail (553) is located below the circular plate (552), the second driving slider (554) is located inside the slide rail (553) and slides, and the plurality of scraper rings (555) are fixedly connected to each other via mounting rods (556).

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