Coal crushing device for thermal power plant

Abstract

The utility model discloses a coal crushing device for a thermal power plant, and relates to the technical field of thermal power generation. The feeding hopper is located above the crushing box and used for feeding, and the two sides of an opening in the bottom of the feeding hopper are arranged to be inclined planes; the material distributing box is communicated with the feeding hopper and the crushing box, and side openings are formed in the two sides of the material distributing box; the rotating block is rotationally arranged in the material distribution box and is attached to the inner wall of the material distribution box, and a material guide opening is formed in the side face of the rotating block and used for conveying materials to the crushing box at equal intervals and equal quantity; according to the scheme, when the rotating block rotates to extrude the first arc-shaped part at intervals, the top end of the bent rod synchronously and vertically knocks the inclined surface at the bottom opening of the feeding hopper at intervals, and energy loss can be reduced by knocking perpendicular to the inclined surface, so that coal in the feeding hopper smoothly falls, and the crushing efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal power generation, specifically to a coal crushing device for thermal power plants. Background Technology

[0002] In thermal power plants, coal is the primary fuel, and the degree of coal crushing directly affects combustion efficiency and power generation quality. Currently available coal crushing devices often experience coal accumulation in the feed hopper during the feeding process, preventing it from falling smoothly and impacting feeding efficiency.

[0003] Therefore, those skilled in the art have provided a coal crushing device for thermal power plants to solve the problems mentioned above. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a coal crushing device for thermal power plants.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A coal crushing device for a thermal power plant, comprising:

[0007] Grinding box;

[0008] The feed hopper, located above the crushing box, is used for feeding materials, and the bottom opening has inclined surfaces on both sides;

[0009] The material distribution box is connected to the feed hopper and the crushing box, and side openings are provided on both sides of the material distribution box;

[0010] The rotating block is rotatably installed inside the material distribution box and is set against the inner wall of the material distribution box. The side of the rotating block has a guide port for feeding materials into the crushing box at equal intervals and in equal amounts.

[0011] The bent rod is rotatably mounted on the outside of the distribution box. A first arc-shaped part and a second arc-shaped part are respectively located below and above the rotation point. The center of gravity of the bent rod is located on the side away from the distribution box from the rotation point, so that the convex surface of the first arc-shaped part is inserted into the side opening and the concave surface of the second arc-shaped part faces the feed hopper. When the rotating block rotates and squeezes the first arc-shaped part at intervals, the top of the bent rod synchronously and at intervals strikes the inclined surface at the bottom opening of the feed hopper vertically.

[0012] Preferably, an elastic block is fixedly sleeved on the top of the bent rod, and the width of the elastic block is greater than the width of the second arc-shaped part and less than the width of the feed hopper.

[0013] Preferably, the feed inlet is configured as a fan-shaped ring, and the bottom opening of the feed hopper is smaller than the width of the feed inlet.

[0014] Preferably, the two feed inlets are symmetrically arranged, and the fan-shaped angle corresponding to the feed inlets is 90 degrees.

[0015] Preferably, the crushing box is equipped with a crushing roller that rotates synchronously to crush the coal blocks. The crushing roller is located below the bottom opening of the distribution box, and the rotating block rotates synchronously with the crushing roller.

[0016] In summary, this utility model has the following beneficial technical effects:

[0017] When the rotating block squeezes the first arc-shaped part at intervals, the top of the bent rod simultaneously and at intervals strikes the inclined surface at the bottom opening of the feed hopper vertically. Striking perpendicularly to the inclined surface can reduce energy loss, thereby promoting the smooth falling of coal in the feed hopper and accelerating the crushing efficiency. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a front view cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the bent rod structure of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Crushing box; 2. Feed hopper; 3. Distributor box; 4. Rotating block; 5. Bending rod; 31. Side opening; 41. Guide opening; 51. First arc-shaped part; 52. Second arc-shaped part; 53. Elastic block. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] A coal crushing device for a thermal power plant, referring to Figure 1-3 ,include:

[0025] Crushing box 1 serves as the main location for coal crushing.

[0026] The feed hopper 2, located above the crushing box 1, is used for feeding. The bottom opening has inclined surfaces on both sides, which facilitates the coal sliding into the distribution box 3.

[0027] The material distribution box 3 is connected to the feed hopper 2 and the crushing box 1, and the material distribution box 3 has side openings 31 on both sides.

[0028] Rotating block 4 is rotatably set inside the material distribution box 3 and is set against the inner wall of the material distribution box 3. A guide port 41 is opened on the side of the rotating block 4. By rotating the rotating block 4, it is possible to feed materials into the crushing box 1 at equal intervals and in equal amounts.

[0029] The bent rod 5 is rotatably mounted on the outside of the distribution box 3. A first arc-shaped part 51 and a second arc-shaped part 52 are respectively located below and above the rotation point. The center of gravity of the bent rod 5 is located on the side away from the distribution box 3 from the rotation point. Gravity causes the convex surface of the first arc-shaped part 51 to insert into the side opening 31, and the concave surface of the second arc-shaped part 52 faces the feed hopper 2. When the rotating block 4 rotates and squeezes the first arc-shaped part 51 at intervals, the top of the bent rod 5 synchronously and at intervals strikes the inclined surface at the bottom opening of the feed hopper 2. Striking perpendicularly to the inclined surface can reduce energy loss, thereby promoting the smooth falling of coal in the feed hopper 2, which can speed up the crushing efficiency and prevent accumulation in the crushing box 1.

[0030] An elastic block 53 is fixedly fitted on the top of the bent rod 5. The width of the elastic block 53 is greater than the width of the second arc-shaped part 52 and less than the width of the feed hopper 2. The elastic block 53 serves to buffer the impact of the bent rod 5 on the feed hopper 2, reducing damage to the feed hopper 2, while ensuring sufficient impact force to promote the falling of coal.

[0031] The feed inlet 41 is designed in a fan-shaped annular shape, and the bottom opening of the feed hopper 2 is smaller than the width of the feed inlet 41. This structural design facilitates the smooth entry of coal into the feed inlet 41, achieving uniform material conveying.

[0032] The two feed inlets 41 are symmetrically arranged, and the fan angle corresponding to the feed inlets 41 is 90 degrees. The symmetrical arrangement of the feed inlets 41 can make the force more even during the rotation of the rotating block 4, and ensure the stability of feeding materials at equal intervals and in equal quantities.

[0033] The crushing box 1 is equipped with a crushing roller that rotates synchronously to crush coal blocks. It is driven by a motor. The crushing roller is located below the bottom opening of the distribution box 3, and the rotating block 4 rotates synchronously with the crushing roller. It can be driven by gears and gears, sprockets and chains, etc., which are common methods in the prior art. This ensures that the coal can be crushed in time, improves the crushing efficiency, and does not require additional power to the rotating block 4, making the overall structure compact.

[0034] When using the coal crushing device for thermal power plants according to this invention, coal enters from the feed hopper 2. Since the bottom opening of the feed hopper 2 has inclined surfaces on both sides, the coal naturally slides into the distribution box 3. At this time, the guide port 41 on the rotating block 4 delivers coal at equal intervals and in equal quantities into the crushing box 1. During the rotation of the rotating block 4, when the guide port 41 rotates to contact the first arc-shaped part 51, it will squeeze the first arc-shaped part 51. The bent rod 5 will rotate around the rotation point. Since the center of gravity of the bent rod 5 is located on the side away from the distribution box 3 from the rotation point, it will reset after being struck. The elastic block 53 at its top will strike the inclined surface at the bottom opening of the feed hopper 2 at intervals, promoting the smooth fall of coal in the feed hopper 2 and preventing accumulation. The coal entering the crushing box 1 will be crushed into the required particle size under the action of the crushing roller that rotates synchronously with the rotating block 4.

[0035] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A coal crushing device for a thermal power plant, characterized in that, include: Crushing box (1); The feed hopper (2) is located above the crushing box (1) and is used for feeding. The bottom opening has inclined surfaces on both sides. The material distribution box (3) is connected to the feed hopper (2) and the crushing box (1), and the material distribution box (3) has side openings (31) on both sides; The rotating block (4) is rotatably set inside the material distribution box (3) and is set against the inner wall of the material distribution box (3). The side of the rotating block (4) is provided with a guide port (41) for feeding materials into the crushing box (1) at equal intervals and in equal amounts. The bent rod (5) is rotatably set on the outside of the distribution box (3). The first arc-shaped part (51) and the second arc-shaped part (52) are respectively set below and above the rotation point. The center of gravity of the bent rod (5) is located on the side away from the distribution box (3) from the rotation point, so that the convex surface of the first arc-shaped part (51) is inserted into the side opening (31), and the concave surface of the second arc-shaped part (52) faces the feed hopper (2). When the rotating block (4) rotates and squeezes the first arc-shaped part (51) at intervals, the top of the bent rod (5) synchronously and vertically strikes the inclined surface at the bottom opening of the feed hopper (2).

2. The coal crushing device for a thermal power plant according to claim 1, characterized in that: An elastic block (53) is fixedly sleeved on the top of the bent rod (5), and the width of the elastic block (53) is greater than the width of the second arc-shaped part (52) and less than the width of the feed hopper (2).

3. A coal crushing device for a thermal power plant according to claim 2, characterized in that: The feed inlet (41) is configured as a fan-shaped ring, and the bottom opening of the feed hopper (2) is smaller than the opening width of the feed inlet (41).

4. A coal crushing device for a thermal power plant according to claim 3, characterized in that: The two feed inlets (41) are symmetrically arranged, and the fan-shaped angle corresponding to the feed inlets (41) is 90 degrees.

5. A coal crushing device for a thermal power plant according to claim 4, characterized in that: The crushing box (1) is equipped with a crushing roller that rotates synchronously to crush coal blocks. The crushing roller is located below the bottom opening of the distribution box (3), and the rotating block (4) rotates synchronously with the crushing roller.

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