Coal scraping device for coal conveying belt of thermal power plant

Abstract

The utility model relates to the technical field of thermal power generation, and discloses a thermal power plant coal conveying belt coal scraping device which comprises a working table top, a coal conveying belt body is arranged at the top of the working table top, a collecting box is arranged in the working table top, and a fixing frame is fixedly connected to the top of the working table top. A connecting frame is rotatably connected to the interior of the fixing frame, a limiting mechanism is arranged in the connecting frame, a cleaning scraper is inserted into the connecting frame, and a rotating plate is fixedly connected to the side wall of the connecting frame. According to the cleaning device, through the arrangement of a connecting frame, a limiting plate, a positioning spring, a push rod, a cleaning scraper, a rotating plate, an adjusting rod and a reset spring, the effect of detaching and replacing the cleaning scraper is achieved, and the situation that the cleaning scraper is abraded due to long-time use, and consequently cleaning and scraping are inconvenient is avoided; and the cleanliness of the coal conveying belt in the using process can be improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal power generation technology, and in particular to a coal scraper device for a coal conveyor belt in a thermal power plant. Background Technology

[0002] A thermal power plant, or coal-fired power plant for short, is a factory that uses combustible materials as fuel to produce electricity. Its basic production process is as follows: when fuel is burned, it heats water to generate steam, which converts the chemical energy of the fuel into heat energy. The steam pressure drives the turbine to rotate, converting the heat energy into mechanical energy. Then, the turbine drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] Coal needs to be transported using a coal conveyor belt. Over time, coal will adhere to the surface of the conveyor belt, requiring a coal scraper to clean the surface.

[0004] The existing technology has the following drawbacks: the scrapers of some existing coal scraping devices are prone to wear after long-term use. After the scrapers are worn, there is a certain gap between them and the coal conveyor belt, which leads to incomplete coal scraping and cleaning, thereby reducing the working efficiency of coal scraping on the coal conveyor belt. To solve the above problems, a coal scraping device for coal conveyor belts in thermal power plants is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a coal scraper device for a coal conveyor belt in a thermal power plant, which aims to improve the problem of wear and tear on the scraper blades after long-term use in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a coal conveyor belt scraper for a thermal power plant, comprising a worktable, a coal conveyor belt body disposed on the top of the worktable, a collection box disposed inside the worktable, a fixed frame fixedly connected to the top of the worktable, a connecting frame rotatably connected inside the fixed frame, a limit mechanism disposed inside the connecting frame, a cleaning scraper inserted inside the connecting frame, a rotating plate fixedly connected to the side wall of the connecting frame, an adjusting rod elastically connected inside the rotating plate via a return spring, and a cleaning mechanism disposed on the top of the worktable;

[0007] The limiting mechanism includes a limiting plate, which is slidably connected inside the connecting frame. The limiting plate is elastically connected to the connecting frame via a positioning spring, and a push rod is fixedly connected to the side wall of the limiting plate.

[0008] As a further description of the above technical solution:

[0009] The cleaning mechanism includes a servo motor, which is fixedly connected to the top of the worktable. A rotating rod is fixedly connected to the output end of the servo motor, a cleaning roller is fixedly connected to the outer surface of the rotating rod, and a tapping disc is fixedly connected to the end of the rotating rod.

[0010] As a further description of the above technical solution:

[0011] The push rod passes through and is slidably connected inside the connecting frame. The side wall of the limiting plate is fixedly connected to a positioning block. The side wall of the cleaning scraper is provided with a positioning groove that matches the size of the positioning block.

[0012] As a further description of the above technical solution:

[0013] One side of the limiting plate is fixedly connected to one end of the positioning spring, and the other end of the positioning spring is fixedly connected to the inner sidewall of the connecting frame.

[0014] As a further description of the above technical solution:

[0015] The side wall of the fixed frame has multiple limiting holes arranged in a circular array, and the adjusting rod passes through the rotating plate and is inserted into the limiting holes.

[0016] As a further description of the above technical solution:

[0017] The side wall of the rotating plate is fixedly connected to one end of the return spring, and the other end of the return spring is fixedly connected to the side wall of the adjusting rod.

[0018] As a further description of the above technical solution:

[0019] The outer surface of the cleaning roller is in contact with the bottom of the coal conveyor belt body.

[0020] As a further description of the above technical solution:

[0021] The tapping disc is oval-shaped and made of hard rubber.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the connection frame, limiting plate, positioning spring, push rod, cleaning scraper, rotating plate, adjusting rod and reset spring are designed to allow for the disassembly and replacement of the cleaning scraper, avoiding wear and tear on the cleaning scraper after long-term use, which would cause inconvenience during cleaning and improve the cleanliness of the coal conveyor belt.

[0024] 2. In this utility model, the arrangement of the worktable, the coal conveyor belt body, the servo motor, the rotating rod, the cleaning roller and the tapping disc achieves the cleaning effect on the surface of the coal conveyor belt after cleaning, avoiding the presence of residue on the surface of the coal conveyor belt and the large accumulation of coal sludge, which helps to improve the cleanliness of the coal conveyor belt during use. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the worktable and the coal conveyor belt of a coal scraper device for a thermal power plant, as proposed in this utility model.

[0026] Figure 2 This is a cross-sectional view of the workbench surface of a coal scraper on a coal conveyor belt in a thermal power plant, as proposed in this utility model.

[0027] Figure 3 This is an exploded structural diagram of the connecting frame, limiting mechanism, and cleaning scraper of a coal conveyor belt scraper for a thermal power plant, as proposed in this utility model.

[0028] Figure 4 This utility model proposes a coal scraper device for a coal conveyor belt in a thermal power plant. Figure 3 Enlarged schematic diagram of the internal structure of part A in the middle.

[0029] Legend:

[0030] 1. Worktable; 2. Coal conveyor belt body; 3. Collection box; 4. Fixing frame; 5. Connecting frame; 6. Limiting mechanism; 61. Limiting plate; 62. Positioning spring; 63. Push rod; 7. Rotating plate; 8. Cleaning scraper; 9. Cleaning mechanism; 91. Servo motor; 92. Rotating rod; 93. Cleaning roller; 94. Beating disc; 10. Adjusting rod; 11. Return spring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3This utility model provides an embodiment of a coal conveyor belt scraper for a thermal power plant, comprising a worktable 1, a coal conveyor belt body 2 mounted on top of the worktable 1, and a collection box 3 inside the worktable 1. The coal conveyor belt body 2 transports coal to the required location, and the collection box 3 collects cleaned coal ash and debris. A fixed frame 4 is fixedly connected to the top of the worktable 1, and a connecting frame 5 is rotatably connected inside the fixed frame 4. A limit mechanism 6 is provided inside the connecting frame 5, and a cleaning scraper 8 is inserted inside the connecting frame 5. The cleaning scraper 8 cleans the bottom of the coal conveyor belt body 2, improving its cleanliness. A rotating plate 7 is fixedly connected to the side wall of the connecting frame 5. The side wall of frame 4 has multiple limiting holes arranged in a circular array. The adjusting rod 10 passes through the rotating plate 7 and is inserted into the limiting hole. The circular array of limiting holes allows the adjusting rod 10 to be stably inserted into the limiting hole after being rotated to different positions, thus achieving the effect of adjusting the angle of the cleaning scraper 8. The adjusting rod 10 is elastically connected to the inside of the rotating plate 7 by a return spring 11. The side wall of the rotating plate 7 is fixedly connected to one end of the return spring 11, and the other end of the return spring 11 is fixedly connected to the side wall of the adjusting rod 10. Pulling the adjusting rod 10 stretches the return spring 11, causing the return spring 11 to deform. After resetting, the rebound of the return spring 11 causes the adjusting rod 10 to slide back to the inside of the limiting hole. A cleaning mechanism 9 is provided on the top of the worktable 1.

[0033] Reference Figures 2-4 The limiting mechanism 6 includes a limiting plate 61, which is slidably connected inside the connecting frame 5. A positioning block is fixedly connected to the side wall of the limiting plate 61. The side wall of the cleaning scraper 8 has a positioning groove that matches the size of the positioning block. The positioning block is inserted into the positioning groove to ensure a stable connection between the limiting plate 61 and the connecting frame 5, thereby improving the stability of the cleaning scraper 8 during use. A push rod 63 is fixedly connected to the side wall of the limiting plate 61. The push rod 63 passes through and is slidably connected inside the connecting frame 5. Pushing the push rod 63 causes the limiting plate 61 to slide stably inside the connecting frame 5. The limiting plate 61 is elastically connected to the connecting frame 5 through a positioning spring 62. One side of the limiting plate 61 is fixedly connected to one end of the positioning spring 62, and the other end of the positioning spring 62 is fixedly connected to the inner side wall of the connecting frame 5. Pushing the limiting plate 61 compresses the positioning spring 62, causing the positioning spring 62 to deform. When resetting, the rebound of the positioning spring 62 causes the limiting plate 61 to slide back to its original position.

[0034] Reference Figures 1-3The cleaning mechanism 9 includes a servo motor 91, which is fixedly connected to the top of the worktable 1. A rotating rod 92 is fixedly connected to the output end of the servo motor 91. The servo motor 91 drives the rotating rod 92 to rotate at the bottom of the coal conveyor belt body 2. A cleaning roller 93 is fixedly connected to the outer surface of the rotating rod 92. The outer surface of the cleaning roller 93 contacts the bottom of the coal conveyor belt body 2. The rotation of the rotating rod 92 drives the cleaning roller 93 to rotate. The rotating cleaning roller 93 is used to rotate and clean the coal ash and debris produced at the bottom of the coal conveyor belt body 2. A slapping disc 94 is fixedly connected to the end of the rotating rod 92. The slapping disc 94 is elliptical and made of hard rubber. During the rotation, the elliptical slapping disc 94 slaps the bottom of the coal conveyor belt body 2, causing the coal conveyor belt body 2 to vibrate after being slapped, thereby improving the cleaning work of the coal conveyor belt body 2.

[0035] Working principle: When the coal conveyor belt body 2 needs to be cleaned, pulling the adjusting rod 10 stretches the return spring 11 and rotates the rotating plate 7. The rotation of the rotating plate 7 drives the connecting frame 5 and the cleaning scraper 8 to rotate. When the cleaning scraper 8 is rotated to the appropriate position, the pulling of the adjusting rod 10 is released. The return spring 11 causes the adjusting rod 10 to be inserted into the fixed frame 4, which satisfies the adjustment of the angle of the cleaning scraper 8. As the coal conveyor belt body 2 rotates, the cleaning scraper 8 is used to clean the surface of the coal conveyor belt body 2. The cleaned coal ash falls into the collection box 3. When the cleaning scraper 8 wears out after long-term use and needs to be replaced, pushing the push rod 63 drives the limiting plate 61 to squeeze the positioning spring 62 and slide inside the connecting frame 5, so that the limiting plate 61 is pulled out from inside the cleaning scraper 8, which satisfies the disassembly and replacement of the cleaning scraper 8.

[0036] After cleaning, the coal conveyor belt body 2 rotates to the top of the cleaning roller 93. Then, the servo motor 91 drives the rotating rod 92 to rotate. The rotation of the rotating rod 92 drives the cleaning roller 93 and the beating disc 94 to rotate. The cleaning roller 93 cleans the surface of the coal conveyor belt body 2, while the rotating beating disc 94 beats the coal conveyor belt body 2, cleaning the residual debris on the surface of the coal conveyor belt body 2 into the collection box 3, thus collecting the coal ash.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal scraper for a coal conveyor belt in a thermal power plant, comprising a worktable (1), characterized in that: The top of the workbench (1) is provided with a coal conveyor belt body (2), the inside of the workbench (1) is provided with a collection box (3), the top of the workbench (1) is fixedly connected with a fixed frame (4), the inside of the fixed frame (4) is rotatably connected with a connecting frame (5), the inside of the connecting frame (5) is provided with a limit mechanism (6), the inside of the connecting frame (5) is inserted with a cleaning scraper (8), the side wall of the connecting frame (5) is fixedly connected with a rotating plate (7), the inside of the rotating plate (7) is elastically connected with an adjusting rod (10) through a return spring (11), and the top of the workbench (1) is provided with a cleaning mechanism (9). The limiting mechanism (6) includes a limiting plate (61), which is slidably connected inside the connecting frame (5). The limiting plate (61) is elastically connected to the connecting frame (5) through a positioning spring (62). A push rod (63) is fixedly connected to the side wall of the limiting plate (61).

2. The coal scraper for a coal conveyor belt in a thermal power plant according to claim 1, characterized in that: The cleaning mechanism (9) includes a servo motor (91), which is fixedly connected to the top of the worktable (1). A rotating rod (92) is fixedly connected to the output end of the servo motor (91). A cleaning roller (93) is fixedly connected to the outer surface of the rotating rod (92). A tapping disc (94) is fixedly connected to the end of the rotating rod (92).

3. A coal scraper for a coal conveyor belt in a thermal power plant according to claim 1, characterized in that: The push rod (63) passes through and is slidably connected inside the connecting frame (5). The side wall of the limiting plate (61) is fixedly connected with a positioning block. The side wall of the cleaning scraper (8) is provided with a positioning groove that matches the size of the positioning block.

4. A coal scraper for a coal conveyor belt in a thermal power plant according to claim 1, characterized in that: One side of the limiting plate (61) is fixedly connected to one end of the positioning spring (62), and the other end of the positioning spring (62) is fixedly connected to the inner wall of the connecting frame (5).

5. A coal scraper for a coal conveyor belt in a thermal power plant according to claim 1, characterized in that: The side wall of the fixed frame (4) is provided with multiple limiting holes arranged in a ring array, and the adjusting rod (10) passes through the rotating plate (7) and is inserted into the limiting holes.

6. A coal scraper for a coal conveyor belt in a thermal power plant according to claim 1, characterized in that: The side wall of the rotating plate (7) is fixedly connected to one end of the return spring (11), and the other end of the return spring (11) is fixedly connected to the side wall of the adjusting rod (10).

7. A coal scraper for a coal conveyor belt in a thermal power plant according to claim 2, characterized in that: The outer surface of the cleaning roller (93) is in contact with the bottom of the coal conveyor belt body (2).

8. A coal scraper for a coal conveyor belt in a thermal power plant according to claim 2, characterized in that: The patting disc (94) is oval-shaped and made of hard rubber.

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