Fire coal deslagging device for thermal power plant

Abstract

The utility model relates to the technical field of fire coal deslagging, in particular to a thermal power plant fire coal deslagging device which comprises a deslagging box, the top of one end of the deslagging box is communicated and connected with a slag falling opening, and a first sieve plate is fixedly installed in the position, close to the slag falling opening, of the deslagging box. Unburnt coal briquettes and coal ash in coal slag can be preliminarily screened through a first screening plate obliquely arranged at the bottom of a slag falling opening, the coal slag can be screened again through a second screening plate on one side of the first screening plate, the coal briquettes on the second screening plate can be conveniently pushed into a slag collecting box through a pushing plate on the outer wall of a rotating rod, and coal briquette accumulation is prevented; one end of a telescopic column is inserted into a telescopic groove of a mounting block in a sliding mode, under the elastic action of a first spring and a second spring, the collision force between a pushing plate and a second screen plate can be reduced, the second screen plate can be conveniently shaken, coal briquettes and coal ash are separated, and the problem that part of fuel is lost due to the fact that coal cinder is directly discarded is solved; and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal-fired slag removal, in particular to a coal-fired slag removal device for a thermal power plant. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Thermal power plants use coal as fuel for power generation. The coal slag produced by coal combustion needs to be discharged from the boiler through a slag discharge device.

[0003] In the prior art, the coal slag produced during the coal combustion process of a thermal power plant is generally directly discharged and discarded through a slag discharge device. However, in the actual combustion process, the coal slag includes a small amount of unburned coal blocks and coal ash. Directly discarding the coal slag will cause the loss of part of the fuel and increase the production cost. Therefore, we propose a coal-burning slag discharge device for a thermal power plant. Utility Model Content

[0004] The purpose of the utility model is to provide a coal-fired slag removal device for a thermal power plant to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal-fired slag discharge device for a thermal power plant, comprising: a slag discharge box, a top of one end of the slag discharge box being connected to a slag drop opening, a first sieve plate being fixedly installed inside the slag discharge box near the slag drop opening, and a second sieve plate being arranged on a side of the first sieve plate away from the slag drop opening;

[0006] A rotating rod is arranged on the top of the second sieve plate, a pushing plate is fixedly mounted on the outer wall of the rotating rod, and a mounting block is connected to the bottom end of the second sieve plate;

[0007] A telescopic column is connected between the mounting block and the second screen plate. A telescopic slot is provided near the top of the telescopic column. A first spring is sleeved on one end of the telescopic column. The other end of the telescopic column is slidably inserted into the telescopic slot.

[0008] Preferably, the first sieve plate is arranged obliquely, and ash boxes are installed at the bottom of the first sieve plate and the second sieve plate, and a slag box is arranged at the bottom of one end of the second sieve plate away from the first sieve plate.

[0009] Preferably, the second sieve plate is horizontally arranged and movably installed inside the slag discharge box, a material guide platform is arranged between the first sieve plate and the second sieve plate, one end of the material guide platform is fixedly connected to the first sieve plate, and the top of the other end of the material guide platform is an arc surface and is movably connected to the second sieve plate.

[0010] Preferably, four pushing plates are provided and symmetrically mounted on the outer wall of the rotating rod, one end of the rotating rod is rotatably mounted on the inner side wall of the slag discharge box, and the other end of the rotating rod passes through the slag discharge box and is connected to a motor.

[0011] Preferably, two mounting blocks are symmetrically arranged, and mounting grooves are correspondingly opened at one end of the slag discharge box close to the two mounting blocks, and the outer walls of the two mounting blocks are slidably connected to the inner walls of the adjacent mounting grooves.

[0012] Preferably, a fixing plate is provided on one side of the second screen plate, one end of the second screen plate passes through the slag box and does not contact the fixing plate, one end of the two mounting blocks passes through the slag box and is fixedly connected to the fixing plate, and bolts are installed at the four corners of one end of the fixing plate.

[0013] Preferably, a plurality of telescopic columns are evenly installed between the two mounting blocks and the second screen plate, a limit plate is fixedly installed on one end of each telescopic column away from the first spring, and the outer wall of each limit plate is slidably connected to the inner wall of the adjacent telescopic slot.

[0014] Preferably, a second spring is fixedly mounted on one end of each of the limit plates away from the telescopic column, and the other end of each second spring is fixedly mounted on the inner bottom wall of the adjacent telescopic slot.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can preliminarily screen the unburned coal blocks and coal ash in the coal slag through the first sieve plate obliquely arranged at the bottom of the slag outlet, and can screen the coal slag again through the second sieve plate on the side of the first sieve plate, and can conveniently push the coal blocks on the second sieve plate into the slag collecting box through the pushing plate on the outer wall of the rotating rod to prevent the coal blocks from piling up, and can reduce the collision force between the pushing plate and the second sieve plate and facilitate shaking the second sieve plate under the elastic action of the first spring and the second spring, so that the coal blocks and the coal ash are separated, thereby solving the problem that directly discarding the coal slag will cause partial fuel loss, and is conducive to reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the back of the overall structure of the utility model;

[0018] Figure 2 It is a front perspective schematic diagram of the overall structure of the utility model;

[0019] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the overall structure of the utility model;

[0020] Figure 4 For this utility model Figure 3A schematic diagram of the structure enlargement in the middle;

[0021] Figure 5 It is a schematic diagram of the explosion of the local structure of the utility model.

[0022] In the figure: 1. slag discharge box; 2. slag outlet; 3. first screen plate; 4. ash collection box; 5. second screen plate; 7. mounting block; 8. telescopic column; 9. limit plate; 10. telescopic slot; 11. first spring; 12. second spring; 13. slag collection box; 14. motor; 15. rotating rod; 16. pushing plate; 17. material guide table; 18. fixing plate; 19. mounting slot; 20. bolt. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0027] See also Figures 1 to 5 The utility model provides a technical solution: a coal-fired slag discharge device for a thermal power plant, comprising: a slag discharge box 1, a slag outlet 2 is connected to the top of one end of the slag discharge box 1, a first sieve plate 3 is fixedly installed inside the slag discharge box 1 near the slag outlet 2, and a second sieve plate 5 is arranged on the side of the first sieve plate 3 away from the slag outlet 2; the first sieve plate 3 is arranged obliquely, and an ash collecting box 4 is installed at the bottom of the first sieve plate 3 and the second sieve plate 5, and a slag collecting box 13 is arranged at the bottom of the end of the second sieve plate 5 away from the first sieve plate 3, so as to facilitate the classification, collection and treatment of coal ash and unburned coal blocks. The second sieve plate 5 is arranged horizontally and movably installed inside the slag discharge box 1, and a material guide platform 17 is arranged between the first sieve plate 3 and the second sieve plate 5, one end of the material guide platform 17 is fixedly connected to the first sieve plate 3, and the other end of the material guide platform 17 has an arc surface and is movably connected to the second sieve plate 5, so as to facilitate the coal ash on the first sieve plate 3 to fall onto the second sieve plate 5.

[0028] A rotating rod 15 is provided on the top of the second sieve plate 5, and a push plate 16 is fixedly installed on the outer wall of the rotating rod 15. The bottom end of the second sieve plate 5 is connected to a mounting block 7; four push plates 16 are provided and symmetrically installed on the outer wall of the rotating rod 15, one end of the rotating rod 15 is rotatably installed on the inner side wall of the slag box 1, and the other end of the rotating rod 15 passes through the slag box 1 and is connected to the motor 14, the rotating shaft of the motor 14 is fixedly connected to the rotating rod 15, and the end of the push plate 16 away from the rotating rod 15 is an arc surface to avoid damage to the second sieve plate 5. A fixed plate 18 is provided on one side of the second sieve plate 5, one end of the second sieve plate 5 passes through the slag box 1 and does not contact the fixed plate 18, one end of the two mounting blocks 7 passes through the slag box 1 and is fixedly connected to the fixed plate 18, and bolts 20 are installed at the four corners of one end of the fixed plate 18, and the fixed plate 18 can be fixedly installed on the slag box 1 by the bolts 20, so as to facilitate pulling the fixed plate 18 and taking out the second sieve plate 5 and the mounting block 7.

[0029] A telescopic column 8 is connected between the mounting block 7 and the second sieve plate 5. A telescopic slot 10 is provided at the top of the mounting block 7 near the telescopic column 8. A first spring 11 is sleeved on the outside of one end of the telescopic column 8, and the other end of the telescopic column 8 is slidably inserted into the telescopic slot 10. Two mounting blocks 7 are symmetrically arranged, and mounting slots 19 are correspondingly provided at one end of the slag discharge box 1 near the two mounting blocks 7. The outer walls of the two mounting blocks 7 are slidably connected to the inner walls of the adjacent mounting slots 19, so as to facilitate the fixing of the mounting blocks 7. Several telescopic columns 8 are evenly installed between the two mounting blocks 7 and the second sieve plate 5. A limit plate 9 is fixedly installed at one end of each telescopic column 8 away from the first spring 11. The outer wall of each limit plate 9 is slidably connected to the inner wall of the adjacent telescopic slot 10, and one end of each first spring 11 is fixedly connected to the second sieve plate 5, and the other end of each first spring 11 is fixedly connected to the adjacent mounting block 7. A second spring 12 is fixedly mounted on one end of each limit plate 9 away from the telescopic column 8 , and the other end of each second spring 12 is fixedly mounted on the inner bottom wall of the adjacent telescopic slot 10 , so that the second screen plate 5 can move up and down with the telescopic column 8 .

[0030] When the device is working, the slag outlet 2 is connected to the slag outlet of the boiler. The first sieve plate 3 inclined at the bottom of the slag outlet 2 can be used to preliminarily screen the unburned coal blocks and coal ash in the coal slag. The second sieve plate 5 on the side of the first sieve plate 3 can be used to screen the coal slag again. The pushing plate 16 on the outer wall of the rotating rod 15, when the motor 14 drives the rotating rod 15 and the pushing plate 16 to rotate, is convenient for pushing the coal blocks on the second sieve plate 5 into the slag collecting box 13 to prevent the coal blocks from piling up. By sliding one end of the telescopic column 8 into the telescopic groove 10 of the mounting block 7, and under the elastic action of the first spring 11 and the second spring 12, the collision force between the pushing plate 16 and the second sieve plate 5 can be reduced, and the second sieve plate 5 can be shaken to separate the coal blocks and the coal ash, thereby solving the problem of directly discarding the coal slag causing partial fuel loss, which is beneficial to reducing production costs.

[0031] 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 slag removal device for a thermal power plant, comprising: A slag discharge box (1), characterized in that: a top of one end of the slag discharge box (1) is connected to a slag drop opening (2), a first sieve plate (3) is fixedly installed inside the slag discharge box (1) near the slag drop opening (2), and a second sieve plate (5) is arranged on a side of the first sieve plate (3) away from the slag drop opening (2); A rotating rod (15) is provided on the top of the second sieve plate (5), a pushing plate (16) is fixedly mounted on the outer wall of the rotating rod (15), and a mounting block (7) is connected to the bottom end of the second sieve plate (5); A telescopic column (8) is connected between the mounting block (7) and the second sieve plate (5); a telescopic groove (10) is provided on the mounting block (7) near the top of the telescopic column (8); a first spring (11) is sleeved on the outside of one end of the telescopic column (8); and the other end of the telescopic column (8) is slidably inserted into the telescopic groove (10).

2. A coal-fired slag removal device for a thermal power plant according to claim 1, characterized in that: The first sieve plate (3) is arranged obliquely, and ash collecting boxes (4) are installed at the bottom of the first sieve plate (3) and the second sieve plate (5), and a slag collecting box (13) is arranged at the bottom of one end of the second sieve plate (5) away from the first sieve plate (3).

3. A coal-fired slag removal device for a thermal power plant according to claim 1, characterized in that: The second sieve plate (5) is horizontally arranged and movably installed inside the slag discharge box (1); a material guide platform (17) is arranged between the first sieve plate (3) and the second sieve plate (5); one end of the material guide platform (17) is fixedly connected to the first sieve plate (3); the other end of the material guide platform (17) has a top with an arc surface and is movably connected to the second sieve plate (5).

4. A coal-fired slag removal device for a thermal power plant according to claim 1, characterized in that: Four push plates (16) are provided and symmetrically mounted on the outer wall of the rotating rod (15); one end of the rotating rod (15) is rotatably mounted on the inner side wall of the slag discharge box (1); the other end of the rotating rod (15) penetrates the slag discharge box (1) and is connected to the motor (14).

5. The coal-fired slag removal device for a thermal power plant according to claim 1, characterized in that: Two mounting blocks (7) are symmetrically arranged, and mounting grooves (19) are correspondingly provided at one end of the slag discharge box (1) close to the two mounting blocks (7), and the outer walls of the two mounting blocks (7) are slidably connected to the inner walls of adjacent mounting grooves (19).

6. A coal-fired slag removal device for a thermal power plant according to claim 1, characterized in that: A fixing plate (18) is provided on one side of the second sieve plate (5); one end of the second sieve plate (5) passes through the slag discharge box (1) and does not contact the fixing plate (18); one end of the two mounting blocks (7) passes through the slag discharge box (1) and is fixedly connected to the fixing plate (18); bolts (20) are installed at four corners of one end of the fixing plate (18).

7. A coal-fired slag removal device for a thermal power plant according to claim 5, characterized in that: A plurality of telescopic columns (8) are evenly installed between the two mounting blocks (7) and the second screen plate (5), and a limit plate (9) is fixedly installed at one end of each telescopic column (8) away from the first spring (11), and the outer wall of each limit plate (9) is slidably connected to the inner wall of the adjacent telescopic groove (10).

8. A coal-fired slag removal device for a thermal power plant according to claim 7, characterized in that: A second spring (12) is fixedly mounted on one end of each of the limit plates (9) away from the telescopic column (8), and the other end of each second spring (12) is fixedly mounted on the inner bottom wall of the adjacent telescopic slot (10).

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