High-sulfur coal blending combustion device for large-scale thermal power plant

Abstract

The utility model provides a large-scale thermal power plant high-sulfur coal blending combustion device, and relates to the technical field of high-sulfur coal blending combustion, the large-scale thermal power plant high-sulfur coal blending combustion device comprises a machine body, the inner walls of the two sides of the machine body are fixedly connected with two fixing plates, a U-shaped plate is fixedly connected between the fixing plates, one end of the U-shaped plate is fixedly connected with the inner walls of the two sides of the machine body respectively, and the other end of the U-shaped plate is fixedly connected with the machine body. U-shaped plates are arranged on the top of the machine body, first rotating rods are arranged in the U-shaped plates, first conveying blades are fixedly connected to the surfaces of the first rotating rods in a sleeving mode, an annular plate is fixed to and communicates with the top of the machine body, and two rotating rods are arranged in the annular plate. The second motor drives the rotating rods to rotate, the rotating rods rotate to drive the other rotating rod to rotate through the gear, the rotating rods rotate to drive the smashing rollers to rotate, the effect of evenly smashing high-sulfur coal and low-sulfur coal can be achieved, and therefore the effect that particles of the high-sulfur coal and the low-sulfur coal are even can be achieved; therefore, the subsequent mixing uniformity can be improved.

Description

Technical Field

[0001] This utility model relates to the field of high-sulfur coal blending technology, and in particular to a high-sulfur coal blending device for large-scale thermal power plants. Background Technology

[0002] Co-firing technology is a process in which different types and properties of coal are blended in a certain proportion during coal combustion in a boiler to generate electricity. Its basic principle is to use the components of different coal types to blend and mix them according to requirements, so that the final blended coal meets or approaches the boiler's design coal requirements in terms of performance indicators, thereby making the boiler more efficient, with sufficient output and good environmental performance.

[0003] Existing high-sulfur coal co-firing devices for thermal power plants still have certain shortcomings. Large clumps of high-sulfur coal piled up together can cause incomplete combustion. They also lack a quick and uniform crushing function, which can easily lead to differences in particle size between high-sulfur and low-sulfur coal, thus affecting the uniformity of mixing. At the same time, the internal mixing of high-sulfur coal co-firing devices is relatively simple, which can easily lead to uneven mixing. When unevenly mixed coal enters the boiler for combustion, it will result in incomplete combustion. Therefore, a large-scale high-sulfur coal co-firing device for thermal power plants is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the existing technology that a large amount of high-sulfur coal piled up in one place will cause incomplete combustion and lack a quick and uniform crushing function, which will easily lead to different particle sizes of high-sulfur coal and low-sulfur coal, thus affecting the uniformity of mixing. Therefore, a high-sulfur coal co-firing device for large-scale thermal power plants is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a large-scale high-sulfur coal blending device for thermal power plants, comprising a body, two fixed plates fixedly connected to the inner walls of both sides of the body, a U-shaped plate fixedly connected between the fixed plates, one end of the U-shaped plate being fixedly connected to the inner walls of both sides of the body, a first rotating rod provided inside the U-shaped plate, a first conveying blade sleeved and fixedly connected to the surface of each first rotating rod, an annular plate fixedly connected and communicating with the top of the body, two rotating rods provided inside the annular plate, a crushing roller sleeved and fixedly connected to the surface of each rotating rod, both ends of each rotating rod penetrating the annular plate and rotatably connected to its bearing, a gear fixedly connected to one end of each rotating rod, the two gears meshing with each other, a feeding annular plate fixedly connected and communicating with the top of the annular plate, a second rotating rod provided inside the body near the bottom, a second conveying blade sleeved and fixedly connected to the surface of the second rotating rod, one end of the second rotating rod penetrating the body and rotatably connected to its bearing, and a discharge hole opened on one side wall of the body near the bottom.

[0006] Preferably, the bottom of the body and near the four corners are all fixedly connected to support legs, and the bottom of each support leg is trapezoidal.

[0007] Preferably, both ends of the first rotating rod pass through the machine body and are rotatably connected to its bearings. Two first motors are fixedly connected to one end of the machine body. The output end of the first motor is fixedly connected to one end of the first rotating rod. A second motor is fixedly connected to one end of the annular plate. The output end of the second motor is fixedly connected to one end of one of the rotating rods.

[0008] Preferably, a first inclined plate is fixedly connected between the two fixed plates, and a second inclined plate is fixedly connected to the inner walls of both sides of the annular plate above the crushing roller.

[0009] Preferably, a third motor is fixedly connected to one end of the machine body near the bottom, and the output end of the third motor is fixedly connected to one end of the second rotating rod.

[0010] Preferably, a fixing member is sleeved and rotatably connected to one end of the second rotating rod inside the discharge hole, and the top of the fixing member is fixedly connected to the top inner wall of the discharge hole.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, a second motor drives a rotating rod to rotate, and the rotation of the rotating rod can drive another rotating rod to rotate through a gear. The rotation of the rotating rod can drive the crushing roller to rotate, which can achieve the effect of uniformly crushing high-sulfur coal and low-sulfur coal, thereby achieving the effect of making the high-sulfur coal and low-sulfur coal particles uniform, and thus improving the uniformity of subsequent mixing.

[0013] 2. In this utility model, two first motors drive two first rotating rods to rotate, and the rotation of the two first rotating rods can drive the rotation of two first conveying blades, which can achieve the effect of conveying and mixing high-sulfur coal and low-sulfur coal back and forth, thereby improving the mixing efficiency. At the same time, a third motor can drive a second rotating rod to rotate, and the rotation of the second rotating rod can drive the rotation of the second conveying blades, which can achieve the effect of conveying and mixing high-sulfur coal and low-sulfur coal again and discharging them. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional view of the overall structure of a high-sulfur coal co-firing device for a large-scale thermal power plant.

[0015] Figure 2 This utility model provides a side view of the overall structure of a high-sulfur coal co-firing device for a large-scale thermal power plant.

[0016] Figure 3This utility model provides a cross-sectional view of the overall structure of a high-sulfur coal co-firing device for a large-scale thermal power plant.

[0017] Figure 4 This utility model provides a vertical sectional view of the overall structure of a high-sulfur coal co-firing device for a large-scale thermal power plant.

[0018] Figure 5 This utility model presents a partial three-dimensional structural view of a high-sulfur coal co-firing device for a large-scale thermal power plant.

[0019] Legend: 1. Machine body; 2. Support leg; 3. Fixing plate; 4. U-shaped plate; 5. First rotating rod; 6. First conveying blade; 7. First motor; 8. First inclined plate; 9. Ring plate; 10. Feeding ring plate; 11. Rotating rod; 12. Crushing roller; 13. Second inclined plate; 14. Second motor; 15. Gear; 16. Second rotating rod; 17. Second conveying blade; 18. Third motor; 19. Discharge hole; 20. Fixing component. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, as Figure 1-5As shown, this utility model provides a large-scale high-sulfur coal blending device for thermal power plants, including a body 1. Two fixed plates 3 are fixedly connected to the inner walls of both sides of the body 1. A U-shaped plate 4 is fixedly connected between the fixed plates 3. One end of the U-shaped plate 4 is fixedly connected to the inner walls of both sides of the body 1. A first rotating rod 5 is provided inside the U-shaped plate 4. A first conveying blade 6 is sleeved and fixedly connected to the surface of the first rotating rod 5. This allows the first rotating rod 5 to rotate, which in turn drives the first conveying blade 6 to rotate. The rotation of the first conveying blade 6 drives the coal particles inside the U-shaped plate 4 to be conveyed and mixed. An annular plate 9 is fixedly connected to the top of the body 1. Two rotating rods 11 are provided inside the annular plate 9. A crushing roller 12 is sleeved and fixedly connected to the surface of the rotating rod 11. Both ends of the rotating rod 11 pass through the annular plate 9 and are rotatably connected to its bearings. A gear is fixedly connected to one end of each rotating rod 11. 15. Two gears 15 mesh with each other, which can cause the rotating rod 11 to rotate, thereby driving the gear 15 to rotate. The rotation of the gear 15 can drive the other gear 15 to rotate, which in turn drives the other rotating rod 11 to rotate. The rotation of the rotating rod 11 can drive the crushing roller 12 to rotate. The feed ring plate 10 is fixed and connected to the top of the ring plate 9, which can feed high-sulfur coal and low-sulfur coal. A second rotating rod 16 is provided inside the machine body 1 near the bottom. A second conveying blade 17 is sleeved and fixedly connected to the surface of the second rotating rod 16. One end of the second rotating rod 16 passes through the machine body 1 and is rotatably connected to its bearing. A discharge hole 19 is opened on one side wall of the machine body 1 near the bottom, which can cause the second rotating rod 16 to rotate, thereby driving the second conveying blade 17 to rotate. The rotation of the second conveying blade 17 can discharge high-sulfur coal and low-sulfur coal from the discharge hole 19.

[0023] Example 2, as Figure 1-5As shown, support legs 2 are fixedly connected to the bottom of the body 1 near its four corners. The bottoms of the support legs 2 are trapezoidal, which can support the bottom of the body 1. Both ends of the first rotating rod 5 pass through the body 1 and are rotatably connected to its bearings. Two first motors 7 are fixedly connected to one end of the body 1. The output end of the first motor 7 is fixedly connected to one end of the first rotating rod 5, which can drive the first rotating rod 5 to rotate. A second motor 14 is fixedly connected to one end of the annular plate 9. The output end of the second motor 14 is fixedly connected to one end of one of the rotating rods 11, which can drive the rotating rod 11 to rotate. A first inclined plate 8 is fixedly connected between two of the fixed plates 3. This allows coal to slide down the surface of the first inclined plate 8. A second inclined plate 13 is fixedly connected to both sides of the inner wall of the annular plate 9, above the crushing roller 12, allowing coal to slide from the surface of the second inclined plate 13 into the crushing roller 12. A third motor 18 is fixedly connected to one end of the machine body 1, near the bottom. The output end of the third motor 18 is fixedly connected to one end of the second rotating rod 16, allowing the third motor 18 to drive the second rotating rod 16 to rotate. A fixing member 20 is sleeved and rotatably connected to one end of the second rotating rod 16, inside the discharge hole 19, with its top fixedly connected to the top inner wall of the discharge hole 19, thus positioning one end of the second rotating rod 16.

[0024] Working principle: High-sulfur and low-sulfur coal of different sizes are fed into the annular plate 9 through the feed ring plate 10. The high-sulfur and low-sulfur coal then slides through the surface of the second inclined plate 13 into the space between the crushing rollers 12. The second motor 14 drives the rotating rod 11 to rotate, which in turn drives the gear 15 to rotate. This gear 15 then drives another rotating rod 11 to rotate, which in turn drives the crushing rollers 12 to crush the high-sulfur and low-sulfur coal. High-sulfur and low-sulfur coal can slide into the U-shaped plate 4 through the surface of the first inclined plate 8. At this time, the two first motors 7 drive the two first rotating rods 5 to rotate. The rotation of the two first rotating rods 5 can drive the two first conveying blades 6 to rotate, which can achieve the effect of conveying and mixing high-sulfur and low-sulfur coal back and forth, thereby improving the mixing efficiency. At the same time, the third motor 18 can drive the second rotating rod 16 to rotate. The rotation of the second rotating rod 16 can drive the second conveying blades 17 to rotate, which can achieve the effect of conveying and mixing high-sulfur and low-sulfur coal again and discharging them.

[0025] The wiring diagrams of the first motor 7, the second motor 14, and the third motor 18 in this utility model are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the first motor 7, the second motor 14, and the third motor 18 will not be explained in detail.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A large-scale thermal power plant high-sulfur coal co-firing device, comprising a body (1), characterized in that: Two fixed plates (3) are fixedly connected to the inner walls of both sides of the machine body (1). A U-shaped plate (4) is fixedly connected between the fixed plates (3). One end of the U-shaped plate (4) is fixedly connected to the inner walls of both sides of the machine body (1). A first rotating rod (5) is provided inside the U-shaped plate (4). A first conveying blade (6) is sleeved and fixedly connected to the surface of the first rotating rod (5). An annular plate (9) is fixedly connected to the top of the machine body (1). Two rotating rods (11) are provided inside the annular plate (9). A crushing roller (12) is sleeved and fixedly connected to the surface of the rotating rod (11). Both ends of the rod (11) pass through the ring plate (9) and are rotatably connected to its bearing. One end of the rotating rod (11) is fixedly connected to a gear (15). The two gears (15) mesh with each other. The top of the ring plate (9) is fixed and connected to the feed ring plate (10). The inside of the machine body (1) and near the bottom is provided with a second rotating rod (16). The surface of the second rotating rod (16) is fitted with and fixedly connected to a second conveying blade (17). One end of the second rotating rod (16) passes through the machine body (1) and is rotatably connected to its bearing. A discharge hole (19) is opened on one side wall of the machine body (1) and near the bottom.

2. The high-sulfur coal blending device for a large-scale thermal power plant according to claim 1, characterized in that: Support legs (2) are fixedly connected to the bottom of the body (1) and near the four corners. The bottom of each support leg (2) is trapezoidal.

3. The high-sulfur coal blending device for a large-scale thermal power plant according to claim 1, characterized in that: Both ends of the first rotating rod (5) pass through the body (1) and are rotatably connected to its bearing. Two first motors (7) are fixedly connected to one end of the body (1). The output end of the first motor (7) is fixedly connected to one end of the first rotating rod (5). A second motor (14) is fixedly connected to one end of the annular plate (9). The output end of the second motor (14) is fixedly connected to one end of one of the rotating rods (11).

4. A high-sulfur coal blending device for large-scale thermal power plants according to claim 1, characterized in that: A first inclined plate (8) is fixedly connected between the two fixed plates (3), and a second inclined plate (13) is fixedly connected to both sides of the inner wall of the annular plate (9) above the crushing roller (12).

5. A high-sulfur coal blending device for large-scale thermal power plants according to claim 1, characterized in that: A third motor (18) is fixedly connected to one end of the body (1) and near the bottom. The output end of the third motor (18) is fixedly connected to one end of the second rotating rod (16).

6. A high-sulfur coal blending device for large-scale thermal power plants according to claim 1, characterized in that: One end of the second rotating rod (16) is fitted with a fixing member (20) inside the discharge hole (19) and rotatably connected to the bearing. The top of the fixing member (20) is fixedly connected to the top inner wall of the discharge hole (19).

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