Fire coal feeding device for coal-fired power generation

Abstract

The invention relates to the technical field of fire coal feeding, and discloses a fire coal feeding device for fire coal power generation, the fire coal feeding device comprises a bearing plate, a mounting box is arranged above the top of the bearing plate, a crushing mechanism is arranged on the side of the mounting box, the crushing mechanism is used for crushing coal briquettes, and a conveying mechanism is arranged on one side of the top of the bearing plate. The conveying mechanism is used for conveying coal briquettes, the feeding mechanism is arranged at the top of the mounting box and used for continuously conveying the coal briquettes into the mounting box, the crushing mechanism is arranged, so that the coal briquettes can be crushed, and the crushed coal briquettes have smaller particle sizes and larger surface areas; therefore, coal briquettes and air can be mixed more sufficiently, the oxygen contact area in the combustion process is increased, and combustion is more complete and efficient. The improvement of the combustion efficiency means that more heat energy is released, and fly ash and pollutants generated due to incomplete combustion are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coal-fired charging, in particular to a coal-fired charging device for coal-fired power generation. Background Art

[0002] Coal-fired power generation, as an important energy conversion method with a long history, occupies an important position in the global energy structure. In the working process of coal-fired power generation units, the supply and loading of coal are the key links to ensure the continuity and stability of power generation.

[0003] In the process of coal supply and feeding, the coal needs to be crushed. The particle size of the coal directly affects its combustion efficiency and stability in the boiler. Large pieces of coal that have not been crushed are often difficult to fully mix with the air during the combustion process, resulting in incomplete combustion. This not only reduces the combustion efficiency, but may also produce a large amount of fly ash and pollutants, causing adverse effects on the environment. Therefore, a coal feeding device for coal-fired power generation is proposed to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a coal feeding device for coal-fired power generation, which has the advantages of crushing coal blocks and facilitating the combustion of coal blocks, and solves the problem that large pieces of uncrushed coal are often difficult to fully mix with air during the combustion process, resulting in incomplete combustion.

[0005] (II) Technical solution In order to achieve the above-mentioned purpose of crushing the coal blocks and facilitating the combustion of the coal blocks, the present invention provides the following technical solution: it includes a supporting plate, an installation box is arranged above the top of the supporting plate and a crushing mechanism is arranged on the side of the installation box, the crushing mechanism is used to crush the coal blocks, a transport mechanism is arranged on one side of the top of the supporting plate, the transport mechanism is used to transport the coal blocks, and a feeding mechanism is arranged on the top of the installation box, and the feeding mechanism is used to continuously transport coal blocks into the interior of the installation box.

[0006] Furthermore, the crushing mechanism includes a connecting box installed on one side of the outer wall of the installation box, the inner wall of the connecting box is rotatably connected to a worm, the inner wall of the installation box is symmetrically rotatably connected to a first rotating rod and the outer wall of the first rotating rod is sleeved with a crushing roller, and a turbine is installed at one end of the first rotating rod located outside the installation box, the turbine and the worm are meshed with each other, and a driving mechanism is provided at the bottom end of the worm, and the driving mechanism is used to drive the worm to rotate, and turbines are meshed on both sides of the worm, so the two turbines move towards each other.

[0007] Furthermore, the driving mechanism includes a support plate installed on the top surface of the supporting plate, a motor is installed on one side of the outer wall of the support plate, a movable rod is installed on the output end of the motor, a driving wheel is sleeved on the outer wall of the movable rod, a first connecting plate is installed on one side of the outer wall of the mounting box and the end of the first connecting plate is rotatably connected to the second rotating rod, a driven wheel is installed on the end of the second rotating rod, the driving wheel and the driven wheel are connected by a belt drive, a universal joint is installed at the bottom end of the worm and the other end of the universal joint is fixedly connected to the second rotating rod, the motor here is a servo motor, the servo motor shows extremely high stability in output torque and speed, and is not easily affected by changes in the working environment, in the coal-fired feeding device, this stability helps to reduce problems such as coal block blockage or uneven crushing due to motor fluctuations, and improves the reliability and stability of the entire system.

[0008] Furthermore, the transport mechanism includes a conveying cylinder located on one side of the top of the supporting plate, an outer wall of the movable rod is sleeved with an auger, the auger is located inside the conveying cylinder, and the end of the conveying cylinder away from the motor is connected to a discharge port.

[0009] Furthermore, a first support frame is installed on one side of the outer wall of the conveying cylinder, and a second support frame is installed on one side of the outer wall of the conveying cylinder close to the motor, and the bottom end of the second support frame is fixedly connected to the bearing plate.

[0010] Furthermore, the feeding mechanism includes a resistance plate installed on the top of the worm, and limit plates are symmetrically installed on both sides of the inner wall of the installation box. The inner wall of the limit plate is slidably connected with a movable plate, and a spring is symmetrically installed on one side of the outer wall of the movable plate. The end of the spring away from the movable plate is fixedly connected to the inner wall of the installation box, and a strip hole is opened on the outer wall of the installation box on the side of the movable plate, and the resistance plate is located on the side of the strip hole. A through hole is opened on the top surface of the movable plate and a mounting cylinder is installed on the inner wall of the through hole, a mounting hole is opened in the middle of the bottom surface of the mounting cylinder, and a connecting bucket is installed on the top surface of the mounting cylinder, and the material of the spring here is stainless steel.

[0011] Furthermore, the bottom surface of the installation box is connected to a fixing box and both ends of the fixing box are open, a feeding port is opened on one side of the outer wall of the conveying cylinder and the fixing box is fixedly connected to the inner wall of the feeding port.

[0012] Furthermore, the outer wall of the connecting bucket is slidably connected to a connecting cover, the top surface of the connecting cover is provided with a handle, the outer wall of the handle is provided with a rubber sleeve, the setting of the rubber sleeve is beneficial to improving the comfort of the staff's hands, and the connecting cover is provided to cover the connecting bucket with the connecting cover when it is idle to prevent a large amount of dust from entering the interior of the connecting bucket.

[0013] (III) Beneficial effects Compared with the prior art, the present invention provides a coal-fired feeding device for coal-fired power generation, which has the following beneficial effects: 1. This coal-fired power generation coal feeding device can crush coal blocks through the setting of a crushing mechanism. The crushed coal blocks have smaller particle size and larger surface area, which helps the coal blocks to mix more fully with air and increase the oxygen contact area during the combustion process, so as to make the combustion more complete and efficient. The improvement of combustion efficiency not only means that more heat energy is released, but also reduces the fly ash and pollutants generated by incomplete combustion.

[0014] 2. This kind of coal-fired feeding device for coal-fired power generation can continuously input the coal blocks inside the installation cylinder into the interior of the installation box through the setting of the feeding mechanism, so as to facilitate the crushing roller to squeeze and crush the coal blocks. At the same time, in the process of the coal blocks continuously falling in, the coal blocks themselves can effectively prevent part of the dust generated in the crushing process from directly drifting into the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the conveying tube of the present invention; Figure 3 This is a schematic diagram of the structure of the first support frame of the present invention; Figure 4 It is a schematic diagram of the structure of the first rotating rod of the present invention; Figure 5 This is a schematic diagram of the connecting bucket structure of the present invention; Figure 6 It is a schematic diagram of the motor structure of the present invention; Figure 7 This is a schematic diagram of the mounting hole structure of the present invention; Figure 8 It is a schematic diagram of the structure of the movable plate of the present invention; In the figure: 1. bearing plate; 2. mounting box; 3. crushing mechanism; 301. connecting box; 302. worm; 303. first rotating rod; 304. crushing roller; 305. turbine; 4. transportation mechanism; 401. conveying cylinder; 402. auger; 403. discharge port; 5. feeding mechanism; 501. resistance plate; 502. limit plate; 503. movable plate; 504. spring; 505. strip hole; 506. mounting cylinder; 507. mounting hole; 508. connecting bucket; 6. first supporting frame; 7. second supporting frame; 8. fixing box; 9. connecting cover; 10. handle; 11. driving mechanism; 1101. supporting plate; 1102. motor; 1103. movable rod; 1104. driving wheel; 1105. second rotating rod; 1106. universal joint; 1107. driven wheel. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] For specific embodiment 1, please refer to Figures 1 to 8 , including a carrying plate 1, a mounting box 2 is arranged on the top of the carrying plate 1 and a crushing mechanism 3 is arranged on the side of the mounting box 2, the crushing mechanism 3 is used to crush the coal blocks, a transportation mechanism 4 is arranged on the top side of the carrying plate 1, the transportation mechanism 4 is used to transport the coal blocks, a feeding mechanism 5 is arranged on the top of the mounting box 2, the feeding mechanism 5 is used to continuously transport the coal blocks into the mounting box 2, the crushing mechanism 3 includes a connecting box 301 installed on one side of the outer wall of the mounting box 2, the inner wall of the connecting box 301 is rotatably connected to a worm 302, and the inner wall of the mounting box 2 is symmetrically rotated. The first rotating rod 303 is connected to the first rotating rod 303 and the outer wall of the first rotating rod 303 is sleeved with a crushing roller 304. The first rotating rod 303 is installed with a turbine 305 at one end outside the installation box 2. The turbine 305 and the worm 302 are meshed with each other. The bottom end of the worm 302 is provided with a driving mechanism 11, and the driving mechanism 11 is used to drive the worm 302 to rotate. The driving mechanism 11 includes a support plate 1101 installed on the top surface of the carrier plate 1, and a motor 1102 is installed on one side of the outer wall of the support plate 1101. The output end of the motor 1102 is installed with a movable rod 1103. The outer wall of the movable rod 1103 is sleeved with a driving wheel 1104, a first connecting plate is installed on one side of the outer wall of the installation box 2, and the end of the first connecting plate is rotatably connected to the second rotating rod 1105, and the end of the second rotating rod 1105 is installed with a driven wheel 1107, the driving wheel 1104 and the driven wheel 1107 are connected by a belt drive, a universal joint 1106 is installed at the bottom end of the worm 302, and the other end of the universal joint 1106 is fixedly connected to the second rotating rod 1105, the transportation mechanism 4 includes a conveying cylinder 401 located on one side of the top of the carrying plate 1, and the outer wall of the movable rod 1103 is provided with a first connecting plate, and the end of the first connecting plate is rotatably connected to the second rotating rod 1105, and the end of the second rotating rod 1105 is provided with a driven wheel 1107, and the driving wheel 1104 and the driven wheel 1107 are connected by a belt drive, and the bottom end of the worm 302 is provided with a universal joint 1106, and the other end of the universal joint 1106 is fixedly connected to the second rotating rod 1105, and the transportation mechanism 4 includes a conveying cylinder 401 located on one side of the top of the carrying plate 1, and the outer wall of the movable rod 1103 is provided with a first connecting plate, and the second connecting plate 1105 is provided with a second connecting plate 1105 ... The wall sleeve is provided with an auger 402, and the auger 402 is located inside the conveying cylinder 401. The end of the conveying cylinder 401 away from the motor 1102 is connected with a discharge port 403, and the outer wall side of the conveying cylinder 401 is installed with a first support frame 6, and the outer wall side of the conveying cylinder 401 close to the motor 1102 is installed with a second support frame 7, the bottom end of the second support frame 7 is fixedly connected to the supporting plate 1, the bottom surface of the mounting box 2 is connected with a fixed box 8 and both ends of the fixed box 8 are open, and the outer wall side of the conveying cylinder 401 is provided with a feed port and the fixed box 8 is fixedly connected to the inner wall of the feed port.

[0018] During the working process, the staff can turn on the motor 1102, so that the motor 1102 drives the movable rod 1103 to rotate, thereby driving the driving wheel 1104 to rotate. The driving wheel 1104 will drive the driven wheel 1107 to rotate while rotating. The driven wheel 1107 will drive the second rotating rod 1105 to rotate while rotating. Since the universal joint 1106 is installed between the worm 302 and the second rotating rod 1105, the second rotating rod 1105 will drive the worm 302 to rotate through the universal joint 1106 while rotating. The worm 302 While rotating, it will drive the turbines 305 on both sides to rotate towards each other, thereby driving the first rotating rod 303 to rotate towards each other. When the first rotating rod 303 rotates towards each other, it will drive the crushing roller 304 to rotate towards each other, thereby squeezing and crushing the coal blocks. Then, the extruded and crushed coal blocks will pass through the fixed box 8 and fall into the interior of the conveying cylinder 401. At this time, when the movable rod 1103 rotates, it will drive the auger 402 to rotate, thereby transporting the coal slag to the top of the conveying cylinder 401, and finally fall to the top of the boiler through the discharge port 403.

[0019] Specific embodiment 2: The feeding mechanism 5 includes a resistance plate 501 installed on the top of the worm 302, and limit plates 502 are symmetrically installed on both sides of the inner wall of the installation box 2. The inner wall of the limit plate 502 is slidably connected with a movable plate 503, and a spring 504 is symmetrically installed on one side of the outer wall of the movable plate 503. The end of the spring 504 away from the movable plate 503 is fixedly connected to the inner wall of the installation box 2, and the outer wall of the installation box 2 is located on the side of the movable plate 503. A strip hole 505 is opened on the outer wall of the installation box 2, and the resistance plate 501 is located on the side of the strip hole 505. A through hole is opened on the top surface of the movable plate 503 and a mounting cylinder 506 is installed on the inner wall of the through hole. A mounting hole 507 is opened in the middle of the bottom surface of the mounting cylinder 506, and a connecting bucket 508 is installed on the top surface of the mounting cylinder 506. The outer wall of the connecting bucket 508 is slidably connected with a connecting cover 9, and a handle 10 is installed on the top surface of the connecting cover 9. The outer wall of the handle 10 is provided with a rubber sleeve.

[0020] Working principle: during the working process, when the worm 302 rotates, it will drive the contact plate 501 to rotate. During the rotation process, the contact plate 501 will continuously contact the movable plate 503, pressing the movable plate 503. During the pressing process, the movable plate 503 will drive the spring 504 to move away from the contact plate 501. When the contact plate 501 is no longer pressed, the spring 504 will return to its natural state, driving the movable plate 503 to move towards the contact plate 501, so that the movable plate 503 is in a state of moving left and right, driving the installation cylinder 506 and the connecting rod 506 to move. The receiving bucket 508 moves left and right, so that the coal blocks inside the mounting cylinder 506 will continuously fall onto the top of the crushing roller 304 through the mounting hole 507, making it easier for the crushing roller 304 to squeeze and crush the coal blocks. It should be noted here that the setting of the mounting hole 507 can, to a certain extent, prevent the crushed dust from floating in the air. Because in the process of continuous shaking of the mounting cylinder 506, the coal blocks inside the mounting cylinder 506 will continuously enter the interior of the mounting box 2. The coal blocks themselves act as a "barrier", which can effectively prevent part of the dust generated in the crushing process from directly floating into the air.

[0021] Working step one: during the working process, the staff can move the device to the working place, and then make the discharge port 403 located above the combustion furnace, and then the staff can turn on the motor 1102, and then put the coal block into the installation cylinder 506 through the connecting bucket 508. At this time, when the output end of the motor 1102 rotates, it will drive the movable rod 1103 to rotate, thereby driving the driving wheel 1104 to rotate. When the driving wheel 1104 rotates, it will drive the driven wheel 1107 to rotate. When the driven wheel 1107 rotates, it will drive the second rotating rod 1105 to rotate. Since the universal joint 1106 is installed between the worm 302 and the second rotating rod 1105, when the second rotating rod 1105 rotates, it will drive the worm 302 to rotate through the universal joint 1106. When the worm 302 rotates, it will drive the turbines 305 on both sides thereof to rotate in opposite directions, thereby driving the first rotating rod 303 to rotate in opposite directions. When the first rotating rod 303 rotates in opposite directions, it will drive the crushing roller 304 to rotate in opposite directions.

[0022] Working step two: In addition, when the worm 302 rotates, the contact plate 501 will be driven to rotate. During the rotation, the contact plate 501 will continuously contact the movable plate 503, pressing the movable plate 503. During the pressing process, the movable plate 503 will drive the spring 504 to move away from the contact plate 501. When the contact plate 501 is no longer pressed, the spring 504 will return to its natural state, driving the movable plate 503 to move toward the contact plate 501, so that the movable plate 503 is in a state of moving left and right, driving the mounting cylinder 506 and the connecting bucket 508 to move left and right, so that the coal blocks inside the mounting cylinder 506 will continuously fall into the top of the crushing roller 304 through the mounting hole 507. It should be noted here that the coal blocks here need to have been pre-processed by crushing during mining, and will not block the mounting hole 504 after screening.

[0023] Working step three: Then the two crushing rollers 304 rotate towards each other to squeeze and crush the coal blocks, and then the squeezed and crushed coal blocks will pass through the fixed box 8 and fall into the interior of the conveying cylinder 401. At this time, when the movable rod 1103 rotates, it will drive the auger 402 to rotate, thereby transporting the coal slag to the top of the conveying cylinder 401, and finally fall to the top of the boiler from the discharge port 403.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal-fired feeding device for coal-fired power generation, comprising a bearing plate (1), Features: An installation box (2) is arranged above the top of the support plate (1), and a crushing mechanism (3) is arranged on the side of the installation box (2), and the crushing mechanism (3) is used to crush the coal blocks. A transportation mechanism (4) is arranged on one side of the top of the support plate (1), and the transportation mechanism (4) is used to transport the coal blocks. A feeding mechanism (5) is arranged on the top of the installation box (2), and the feeding mechanism (5) is used to continuously transport the coal blocks into the interior of the installation box (2).

2. A coal-fired feeding device for coal-fired power generation according to claim 1, Features: The crushing mechanism (3) comprises a connection box (301) mounted on one side of the outer wall of the installation box (2); the inner wall of the connection box (301) is rotatably connected to a worm (302); the inner wall of the installation box (2) is symmetrically rotatably connected to a first rotating rod (303); the outer wall of the first rotating rod (303) is sleeved with a crushing roller (304); a turbine (305) is mounted on one end of the first rotating rod (303) located outside the installation box (2); the turbine (305) and the worm (302) are meshed with each other; a driving mechanism (11) is arranged at the bottom end of the worm (302); the driving mechanism (11) is used to drive the worm (302) to rotate.

3. A coal-fired feeding device for coal-fired power generation according to claim 1, Features: The driving mechanism (11) comprises a support plate (1101) mounted on the top surface of the carrier plate (1); a motor (1102) is mounted on one side of the outer wall of the support plate (1101); a movable rod (1103) is mounted on the output end of the motor (1102); a driving wheel (1104) is sleeved on the outer wall of the movable rod (1103); a first connecting plate is mounted on one side of the outer wall of the installation box (2); and a second rotating rod (1105) is rotatably connected to the end of the first connecting plate; a driven wheel (1107) is mounted on the end of the second rotating rod (1105); the driving wheel (1104) and the driven wheel (1107) are connected via a belt drive; a universal joint (1106) is mounted on the bottom end of the worm (302); and the other end of the universal joint (1106) is fixedly connected to the second rotating rod (1105).

4. A coal-fired feeding device for coal-fired power generation according to claim 3, Features: The transport mechanism (4) comprises a conveying cylinder (401) located on one side of the top of the bearing plate (1); an auger (402) is sleeved on the outer wall of the movable rod (1103); the auger (402) is located inside the conveying cylinder (401); and a discharge port (403) is connected to one side of the end of the conveying cylinder (401) away from the motor (1102).

5. A coal-fired feeding device for coal-fired power generation according to claim 4, Features: A first support frame (6) is installed on one side of the outer wall of the conveying cylinder (401), and a second support frame (7) is installed on the side of the outer wall of the conveying cylinder (401) close to the motor (1102), wherein the bottom end of the second support frame (7) is fixedly connected to the bearing plate (1).

6. A coal-fired feeding device for coal-fired power generation according to claim 2, Features: The feeding mechanism (5) comprises a contact plate (501) mounted on the top of the worm (302); limit plates (502) are symmetrically mounted on both sides of the inner wall of the installation box (2); a movable plate (503) is slidably connected to the inner wall of the limit plate (502); a spring (504) is symmetrically mounted on one side of the outer wall of the movable plate (503); one end of the spring (504) away from the movable plate (503) is fixedly connected to the inner wall of the installation box (2); a strip hole (505) is opened on the outer wall of the installation box (2) at the side of the movable plate (503); the contact plate (501) is located at the side of the strip hole (505); a through hole is opened on the top surface of the movable plate (503); a mounting tube (506) is mounted on the inner wall of the through hole; a mounting hole (507) is opened in the middle of the bottom surface of the mounting tube (506); and a connecting bucket (508) is mounted on the top surface of the mounting tube (506).

7. A coal-fired feeding device for coal-fired power generation according to claim 4, Features: The bottom surface of the installation box (2) is connected to a fixing box (8), and both ends of the fixing box (8) are open. A material inlet is provided on one side of the outer wall of the conveying cylinder (401), and the fixing box (8) is fixedly connected to the inner wall of the material inlet.

8. A coal-fired feeding device for coal-fired power generation according to claim 6, Features: The outer wall of the connecting bucket (508) is slidably connected to a connecting cover (9), a handle (10) is mounted on the top surface of the connecting cover (9), and the outer wall of the handle (10) is sleeved with a rubber sleeve.

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