Silicon nitride ceramic wear-resistant pulverized coal concentrator

Abstract

The utility model discloses a silicon nitride ceramic wear-resistant pulverized coal concentrator which comprises a pulverized coal airflow channel, a check block fixedly connected to the inner surface of the pulverized coal airflow channel, a first hydraulic cylinder fixedly connected to the inner surface of the check block, a first push rod fixedly connected to the output end of the first hydraulic cylinder, and a second push rod fixedly connected to the output end of the first push rod. The end, away from the first hydraulic cylinder, of the first push rod is fixedly connected with a push plate, the outer surface of the push plate is fixedly connected with an extension block, the outer surface of the extension block is rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with an inclined plate, the rear surface of the inclined plate is fixedly connected with a connecting block, and the outer surface of the extension block is fixedly connected with a second hydraulic cylinder. According to the device, the length of the adjusting check block can be prolonged, airflow and pulverized coal flow can be more effectively separated, the inclination angle can be adjusted, and the flowing path of airflow and pulverized coal can be changed; and the operation state of the concentrator can be flexibly adjusted and optimized according to different working conditions or pulverized coal characteristics.

Description

Technical Field

[0001] This utility model relates to the technical field of pulverized coal concentrators, and in particular to a silicon nitride ceramic wear-resistant pulverized coal concentrator. Background Technology

[0002] Pulverized coal concentration and combustion technology has been gradually and widely applied in pulverized coal boilers and industrial kilns in my country. Initially, pulverized coal concentration devices generally adopted elbow-type or blade-type devices. Among them, the elbow-type separation and concentration device utilizes the difference in centrifugal force and inertia between the gas and solid phases when the pulverized coal airflow passes through the elbow to achieve separation and concentration. In the existing technology, in swirl burners, the pulverized coal concentration baffle is often set inside the air duct and mostly adopts a fixed structure, which lacks adjustability. Therefore, it cannot adapt to the complex and varied coal quality and load changes, and cannot change the flow path of the airflow and pulverized coal by adjusting the tilt angle. Thus, it cannot increase the contact area between the airflow and pulverized coal, and cannot be flexibly adjusted according to different operating conditions or pulverized coal characteristics. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a silicon nitride ceramic wear-resistant coal powder concentrator. Through the cooperation of a first hydraulic cylinder, a first push rod, a first push plate, and an extension block, the length of the adjusting block can be extended, more effectively separating the airflow and coal powder flow. The longer block increases the contact area between the airflow and the coal powder, thereby increasing the collision opportunities between the gas and the coal powder and improving the coal powder separation efficiency. Through the cooperation of a second hydraulic cylinder, a second push rod, a universal joint, a rotating shaft, and an inclined plate, the tilt angle can be adjusted, changing the flow path of the airflow and the coal powder, making the suspension state of the coal powder in the airflow more ideal, reducing aggregation and sedimentation, and improving fluidity. Different tilt angles can change the speed and direction of the airflow, increasing the contact area between the airflow and the coal powder. This device can be flexibly adjusted according to different working conditions or coal powder characteristics to optimize the operating state of the concentrator.

[0004] This utility model also provides a silicon nitride ceramic wear-resistant coal pulverizer, comprising: a coal pulverizer airflow channel; a baffle fixedly connected to the inner surface of the coal pulverizer airflow channel; a first hydraulic cylinder fixedly connected to the inner surface of the baffle; a first push rod fixedly connected to the output end of the first hydraulic cylinder; a push plate fixedly connected to the end of the first push rod away from the first hydraulic cylinder; an extension block fixedly connected to the outer surface of the push plate; a rotating shaft rotatably connected to the outer surface of the extension block; an inclined plate fixedly connected to the outer surface of the rotating shaft; a connecting block fixedly connected to the rear surface of the inclined plate; a second hydraulic cylinder fixedly connected to the outer surface of the extension block; a second push rod fixedly connected to the output end of the second hydraulic cylinder; and a connecting block fixedly connected to the end of the second push rod away from the second hydraulic cylinder. Equipped with a universal joint, the length of the adjusting block can be extended through the cooperation of the first hydraulic cylinder, the first push rod, the first push plate, and the extension block. This more effectively separates the airflow and pulverized coal flow, and the longer block increases the contact area between the airflow and pulverized coal, thereby increasing the collision opportunities between the gas and pulverized coal and improving the separation efficiency of the pulverized coal. Through the cooperation of the second hydraulic cylinder, the second push rod, the universal joint, the rotating shaft, and the inclined plate, the tilt angle can be adjusted, which can change the flow path of the airflow and pulverized coal, making the suspension state of the pulverized coal in the airflow more ideal, reducing aggregation and sedimentation, and improving fluidity. Different tilt angles can change the speed and direction of the airflow, increasing the contact area between the airflow and the pulverized coal. This device can be flexibly adjusted according to different working conditions or pulverized coal characteristics to optimize the operation of the thickener.

[0005] According to the present invention, a silicon nitride ceramic wear-resistant coal powder concentrator is provided, wherein the extension block is movably connected to the stop block, and a sealing layer is fixedly connected to the outer surface of the stop block to improve the sealing performance.

[0006] According to the present invention, a silicon nitride ceramic wear-resistant coal powder concentrator is provided with a slot on the extension block, and the push plate is located in the slot, which can reduce space occupation.

[0007] According to the present invention, a silicon nitride ceramic wear-resistant coal powder concentrator is provided, wherein the coal powder airflow channel is made of silicon nitride ceramic, and the baffle, extension block, and inclined plate are also made of silicon nitride ceramic, which has high wear resistance and extends service life.

[0008] According to the present invention, a silicon nitride ceramic wear-resistant coal powder concentrator is provided in the baffle block, and a slider is fixedly connected to the outer surface of the extension block, which can make the sliding of the extension block smoother.

[0009] According to the present invention, a silicon nitride ceramic wear-resistant coal powder concentrator is provided, wherein the slider is movably connected to the stop block and slidably connected to the slide groove, which can effectively follow the extension block and reduce wear.

[0010] According to the present invention, a silicon nitride ceramic wear-resistant coal pulverizer is provided, wherein the other end of the universal joint is fixedly connected to the connecting block, and the universal joint is made of carbon steel, which has high performance and extends service life.

[0011] According to the present invention, a silicon nitride ceramic wear-resistant coal powder concentrator has a limiting plate fixedly connected to one end of the slide groove. The limiting plate is fixedly connected to a stop block, which can effectively restrict the movement of the slider.

[0012] Beneficial effects

[0013] 1. Compared with the existing technology, the new silicon nitride ceramic wear-resistant coal powder concentrator can extend the length of the adjusting block through the cooperation of the first hydraulic cylinder, the first push rod, the first push plate and the extension block, so as to more effectively separate the airflow and coal powder flow. The longer block can increase the contact area between the airflow and the coal powder, thereby increasing the collision opportunity between the gas and the coal powder and improving the coal powder separation efficiency.

[0014] 2. Compared with existing technologies, this new silicon nitride ceramic wear-resistant coal powder concentrator can adjust the tilt angle through the cooperation of the second hydraulic cylinder, the second push rod, the universal joint, the rotating shaft and the tilt plate. This can change the flow path of the airflow and the coal powder, making the suspension state of the coal powder in the airflow more ideal, reducing aggregation and sedimentation, and improving fluidity. Different tilt angles can change the speed and direction of the airflow and increase the contact area between the airflow and the coal powder.

[0015] 3. Compared with existing technologies, this new silicon nitride ceramic wear-resistant coal pulverizer can be flexibly adjusted according to different working conditions or coal powder characteristics to optimize the operating status of the pulverizer. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional structural diagram of the silicon nitride ceramic wear-resistant coal powder concentrator of this utility model;

[0018] Figure 2 This is a schematic diagram of the baffle connection structure of the silicon nitride ceramic wear-resistant coal powder concentrator of this utility model;

[0019] Figure 3 This is a diagram showing the internal structure of the baffle of the silicon nitride ceramic wear-resistant coal pulverizer of this utility model;

[0020] Figure 4 This is a schematic diagram of the extension block connection structure of the silicon nitride ceramic wear-resistant coal powder concentrator of this utility model.

[0021] Legend:

[0022] 1. Pulverized coal airflow channel; 2. Baffle; 3. First hydraulic cylinder; 4. First push rod; 5. Push plate; 6. Extension block; 7. Rotating shaft; 8. Inclined plate; 9. Second hydraulic cylinder; 10. Second push rod; 11. Universal joint; 12. Connecting block; 13. Sliding block; 14. Slide groove. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 This utility model discloses a silicon nitride ceramic wear-resistant coal powder concentrator, comprising: a coal powder airflow channel 1 for coal powder and airflow; a baffle 2 fixedly connected to the inner surface of the coal powder airflow channel 1 to change the flow path of coal powder and gas and promote the distribution of coal powder in the airflow; a first hydraulic cylinder 3 fixedly connected to the inner surface of the baffle 2 to provide power to a first push rod 4; a first push rod 4 fixedly connected to the output end of the first hydraulic cylinder 3 to push out a push plate 5; a push plate 5 fixedly connected to the end of the first push rod 4 away from the first hydraulic cylinder 3 to connect the push rod 4 and an extension block 6; and an extension block 6 fixedly connected to the outer surface of the push plate 5 to extend the baffle 2. The outer surface of the extension block 6 is rotatably connected to a rotating shaft 7, which is used to follow the rotation of the inclined plate 8. The outer surface of the rotating shaft 7 is fixedly connected to the inclined plate 8, which is used to change the flow path of pulverized coal and gas and promote the distribution of pulverized coal in the airflow. The rear surface of the inclined plate 8 is fixedly connected to a connecting block 12, which is used to connect the universal joint 11 to the inclined plate 8. The outer surface of the extension block 6 is fixedly connected to a second hydraulic cylinder 9, which is used to provide power to the second push rod 10. The output end of the second hydraulic cylinder 9 is fixedly connected to the second push rod 10, which is used to adjust the inclination of the inclined plate 8. The end of the second push rod 10 away from the second hydraulic cylinder 9 is fixedly connected to a universal joint 11, which is used to adjust the angle between the inclined plate 8 and the push rod 10.

[0025] The extension block 6 is movably connected to the stop block 2. A sealing layer is fixedly connected to the outer surface of the stop block 2 to seal the connection between the extension block 6 and the stop block 2. The extension block 6 is provided with a slot, and the push plate 5 is located in the slot to reduce space occupation. The coal powder airflow channel 1 is made of silicon nitride ceramic. The stop block 2, the extension block 6, and the inclined plate 8 are all made of silicon nitride ceramic. A sliding groove 14 is provided in the stop block 2. A slider 13 is fixedly connected to the outer surface of the extension block 6. The slider 13 is movably connected to the stop block 2 and is slidably connected to the sliding groove 14 for the extension block 6 to slide on the stop block 2. The other end of the universal joint 11 is fixedly connected to the connecting block 12 to adjust the angle between the inclined plate 8 and the push rod 10. The universal joint 11 is made of carbon steel. A limit plate is fixedly connected to one end of the sliding groove 14. The limit plate is fixedly connected to the stop block 2 to limit the sliding range of the slider 13.

[0026] Working principle: In use, the first hydraulic cylinder 3 in the stop block 2 pushes out the first push rod 4, and the first push rod 4 pushes out the push plate 5. The push plate 5 pushes the extension block 6 to move by sliding the slider 13 in the slide groove 14 on the stop block 2, adjusting the extension length of the extension block 6. Then, the second hydraulic cylinder 9 can push out the second push rod 10. The second push rod 10 drives the tilting plate 8 to move through the universal joint 11 and the connecting block 12, adjusting the tilt angle of the tilting plate 8. At the same time, the other side of the tilting plate 8 rotates through the rotating shaft 7.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A silicon nitride ceramic wear-resistant coal pulverizer, characterized in that, include: A pulverized coal airflow channel (1) is provided. A baffle (2) is fixedly connected to the inner surface of the pulverized coal airflow channel (1). A first hydraulic cylinder (3) is fixedly connected to the inner surface of the baffle (2). A first push rod (4) is fixedly connected to the output end of the first hydraulic cylinder (3). A push plate (5) is fixedly connected to the end of the first push rod (4) away from the first hydraulic cylinder (3). An extension block (6) is fixedly connected to the outer surface of the push plate (5). A rotating shaft (7) is rotatably connected to the outer surface of the extension block (6). An inclined plate (8) is fixedly connected to the outer surface of the rotating shaft (7). A connecting block (12) is fixedly connected to the rear surface of the inclined plate (8). A second hydraulic cylinder (9) is fixedly connected to the outer surface of the extension block (6). A second push rod (10) is fixedly connected to the output end of the second hydraulic cylinder (9). A universal joint (11) is fixedly connected to the end of the second push rod (10) away from the second hydraulic cylinder (9).

2. The silicon nitride ceramic wear-resistant coal pulverizer according to claim 1, characterized in that, The extension block (6) is movably connected to the stop block (2), and a sealing layer is fixedly connected to the outer surface of the stop block (2).

3. The silicon nitride ceramic wear-resistant coal pulverizer according to claim 1, characterized in that, The extension block (6) is provided with a slot, and the push plate (5) is located in the slot.

4. The silicon nitride ceramic wear-resistant coal pulverizer according to claim 1, characterized in that, The coal powder airflow channel (1) is made of silicon nitride ceramic, and the baffle (2), extension block (6), and inclined plate (8) are also made of silicon nitride ceramic.

5. A silicon nitride ceramic wear-resistant coal pulverizer according to claim 1, characterized in that, The stop block (2) is provided with a sliding groove (14), and the outer surface of the extension block (6) is fixedly connected with a slider (13).

6. A silicon nitride ceramic wear-resistant coal pulverizer according to claim 5, characterized in that, The slider (13) is movably connected to the stop (2), and the slider (13) is slidably connected to the slide groove (14).

7. A silicon nitride ceramic wear-resistant coal pulverizer according to claim 1, characterized in that, The other end of the universal joint (11) is fixedly connected to the connecting block (12), and the universal joint (11) is made of carbon steel.

8. A silicon nitride ceramic wear-resistant coal pulverizer according to claim 5, characterized in that, One end of the slide (14) is fixedly connected to a limiting plate, and the limiting plate is fixedly connected to the stop block (2).

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