Slag removal device for boiler of thermal power plant

Abstract

The utility model discloses a heat-engine plant boiler deslagging device which comprises a boiler, and the bottom of the boiler is fixedly connected with a boiler net through bolts. A top seat; compared with the prior art, through the arrangement of the attaching mechanism and the mode that a piston is driven by air pressure to move, rapid attaching of the scraper to boilers of different sizes is achieved, the problem that an existing device cannot adapt to the boilers of different sizes is effectively solved through the self-adaptive adjusting mode, and therefore the device has the advantages of being high in adaptability, convenient to use and high in practicability. The applicability is obviously improved; through the arrangement of the deslagging mechanism, on the basis that the scraper moves up and down conventionally along with the follow-up seat in a reciprocating mode, short-distance up-and-down reciprocating motion of the scraper can be achieved, the scraper can generate higher scraping force in the deslagging process, stubborn slag can be effectively dealt with, and the deslagging effect is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler equipment in thermal power plants, and in particular to a slag removal device for boilers in thermal power plants. Background Technology

[0002] A boiler in a thermal power plant is one of the three main pieces of equipment in a power plant, serving as an energy conversion device. Its function is to convert the chemical energy of fuel into thermal energy, and then use this thermal energy to heat the water inside the boiler, producing a sufficient quantity and quality of superheated steam for the turbine. The boiler produces a large amount of slag after burning coal and other fuels; this slag needs to be cleaned and removed promptly to ensure the normal operation of the boiler.

[0003] Currently, existing ash removal devices for thermal power plant boilers generally suffer from poor adaptability. Their structural designs are mostly tailored to specific boiler specifications, making them particularly unsuitable for square boilers. Due to the significant differences in the internal length and width dimensions of different square boilers, traditional ash removal devices cannot quickly adjust to accommodate these dimensional variations. This results in the ash removal device failing to fit tightly against the boiler's inner wall, thus affecting ash removal efficiency and effectiveness. Furthermore, existing ash removal devices employ a relatively simple ash removal method, typically only driving a scraper to move up and down within the boiler. When encountering stubborn ash, this single method is often ineffective, easily causing scraper wear and potentially leading to jamming of the ash removal device, reducing equipment stability and lifespan. Therefore, we propose a new ash removal device for thermal power plant boilers. Utility Model Content

[0004] The main purpose of this utility model is to provide a slag removal device for boilers in thermal power plants, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a slag removal device for a thermal power plant boiler, comprising:

[0006] A boiler, wherein a furnace mesh is bolted to the bottom of the boiler;

[0007] Top seat;

[0008] L-shaped support plate, the L-shaped support plate being fixedly installed on the lower side wall of the top seat;

[0009] A drive motor is mounted on the upper side wall of the top seat. The output shaft of the drive motor passes through the top seat and is fixedly connected to a reciprocating screw. The lower end of the reciprocating screw is rotatably connected to the lower inner wall of the L-shaped support plate.

[0010] A movable seat is threaded onto a reciprocating lead screw. A follower seat is fixedly connected to the movable seat. Four fixed cylinders are arranged around the outer wall of the follower seat, and telescopic columns are slidably arranged inside the fixed cylinders.

[0011] A slag removal mechanism is provided at one end of a telescopic column and is used to scrape and remove slag from the inner wall of the boiler.

[0012] A bonding mechanism is provided on a follower seat and is used to bond the slag removal mechanism to the inner wall of the boiler.

[0013] As a further description of the above technical solution, the slag removal mechanism includes an installation frame, which is fixedly mounted at one end of a telescopic column. A slag removal motor is installed on one inner wall of the installation frame. The output shaft of the slag removal motor extends to the outside of the installation frame and is fixedly connected to a drive disc. A fixing rod is fixedly connected to the edge of one side wall of the drive disc. Two symmetrically distributed limiting plates are fixedly connected to one outer wall of the installation frame. Sliding columns are slidably inserted into the limiting plates. A reciprocating block is fixedly connected between the two sliding columns. A through groove is opened on the reciprocating block. The fixing rod extends into the through groove. A blade holder is fixedly connected to one side wall of the reciprocating block. A scraper is fixedly connected to the blade holder by bolts.

[0014] As a further description of the above technical solution, the bonding mechanism includes a cavity, which is opened in the follower seat. A communicating groove is provided between the cavity and the fixed cylinder. A piston is provided in the fixed cylinder. The piston is fixedly connected to the telescopic column. A return spring is provided between the piston and the inner wall of the fixed cylinder on the side away from the follower seat. An air inlet pipe communicating with the cavity is provided at the center of the upper outer wall of the follower seat. A valve is installed on the air inlet pipe.

[0015] As a further description of the above technical solution, a guide rod is fixedly connected between the lower inner wall of the L-shaped support plate and the top seat, and the movable seat is slidably engaged with the guide rod.

[0016] As a further description of the above technical solution, L-shaped positioning plates are fixedly connected to the four side walls of the top seat, and positioning bolts are threadedly connected to the L-shaped positioning plates. One end of the positioning bolts is provided with an anti-slip pad.

[0017] As a further description of the above technical solution, two symmetrically distributed guide grooves are provided on one side wall of the fixed cylinder, and a guide rail adapted to the guide grooves is fixedly connected to the telescopic column.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By using a specially designed bonding mechanism and air pressure to drive the piston movement, the scraper can quickly bond to boilers of different sizes. When the piston moves under air pressure, it drives the telescopic column to move synchronously, thereby pushing the scraper closer to the inner wall of the boiler. During this process, if a scraper first bonds to the inner wall of the boiler, it will stop moving due to the boiler's obstruction, while the air pressure will continue to push the other pistons until all scrapers are tightly bonded to the inner wall of the boiler. This adaptive adjustment method effectively solves the problem that existing devices cannot adapt to boilers of different sizes, significantly improving applicability.

[0020] 2. Through the slag removal mechanism, the scraper can move up and down in a short distance on its own, in addition to the regular up-and-down reciprocating motion of the follower seat. This makes the scraper generate a stronger scraping force during the slag removal process, which can effectively deal with stubborn slag and greatly improve the slag removal effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a boiler slag removal device for thermal power plants according to the present invention.

[0022] Figure 2 This is a schematic diagram of the furnace mesh structure of a boiler slag removal device for a thermal power plant according to the present invention.

[0023] Figure 3 This is a schematic diagram of the top support structure of a boiler slag removal device for thermal power plants according to the present invention;

[0024] Figure 4 This is a schematic diagram of the slag removal mechanism of a boiler slag removal device for a thermal power plant according to the present invention.

[0025] Figure 5 This is a schematic diagram of the reciprocating block structure of a boiler slag removal device for thermal power plants according to the present invention.

[0026] Figure 6 This is a cross-sectional view of the follower seat of a boiler slag removal device for thermal power plants according to this utility model.

[0027] In the diagram: 1. Boiler; 11. Furnace mesh; 2. Top seat; 3. L-shaped support plate; 4. Drive motor; 41. Reciprocating screw; 5. Moving seat; 51. Follower seat; 52. Fixed cylinder; 53. Telescopic column; 6. Slag removal mechanism; 7. Fitting mechanism; 61. Mounting frame; 62. Slag removal motor; 63. Drive disc; 631. Fixed rod; 64. Limiting plate; 65. Sliding column; 66. Reciprocating block; 661. Through groove; 67. Knife holder; 68. Scraper; 71. Cavity; 72. Connecting groove; 73. Piston; 74. Return spring; 75. Air inlet pipe; 76. Valve; 31. Guide rod; 21. L-shaped positioning plate; 22. Positioning bolt; 23. Anti-slip pad; 531. Guide rail. Detailed Implementation

[0028] To make the technical means, creative features, and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Please see Figure 1-6 This utility model provides a slag removal device for a thermal power plant boiler, comprising:

[0032] Boiler 1, with a furnace mesh 11 fixedly connected to the bottom of boiler 1 by bolts;

[0033] Top seat 2;

[0034] L-shaped support plate 3 is fixedly installed on the lower side wall of top seat 2, and guide rod 31 is fixedly connected between the lower inner wall of L-shaped support plate 3 and top seat 2.

[0035] Drive motor 4 is mounted on the upper side wall of top seat 2. The output shaft of drive motor 4 passes through top seat 2 and is fixedly connected to reciprocating screw 41. The lower end of reciprocating screw 41 is rotatably connected to the lower inner wall of L-shaped support plate 3. Reciprocating screw 41 is coated with anti-corrosion coating.

[0036] The movable seat 5 is threaded onto the reciprocating screw 41. A follower seat 51 is fixedly connected to the movable seat 5. Four fixed cylinders 52 are arranged around the outer wall of the follower seat 51. Two symmetrically distributed guide grooves are opened on one side wall of the fixed cylinder 52. A guide rail 531 adapted to the guide groove is fixedly connected to the telescopic column 53. The telescopic column 53 is slidably arranged inside the fixed cylinder 52. When the telescopic column 53 extends or retracts, the guide rail 531 slides along the guide groove to guide the telescopic column 53. The movable seat 5 slides with the guide rod 31 to limit and guide the movable seat 5, so that it can only move up and down stably.

[0037] The slag removal mechanism 6 is located at one end of the telescopic column 53. The slag removal mechanism 6 is used to scrape and remove slag from the inner wall of the boiler 1. The slag removal mechanism 6 includes a mounting frame 61, which is fixedly located at one end of the telescopic column 53. A slag removal motor 62 is installed on one inner wall of the mounting frame 61. The output shaft of the slag removal motor 62 extends to the outer side of the mounting frame 61 and is fixedly connected to a drive disc 63. A fixing rod 631 is fixedly connected to the edge of one side wall of the drive disc 63. Two symmetrically distributed limiting plates 64 are fixedly connected to one outer wall of the mounting frame 61. Sliding columns 65 are slidably inserted on the limiting plates 64. A reciprocating block 66 is fixedly connected between the two sliding columns 65. A through groove 661 is opened on the reciprocating block 66. The fixing rod 631 extends into the through groove 661. A knife holder 67 is fixedly connected to one side wall of the reciprocating block 66. A scraper 68 is fixedly connected to the knife holder 67 by bolts.

[0038] The fitting mechanism 7 is mounted on the follower seat 51. The fitting mechanism 7 is used to make the slag removal mechanism 6 fit against the inner wall of the boiler 1. The fitting mechanism 7 includes a cavity 71, which is opened in the follower seat 51. A connecting groove 72 is opened between the cavity 71 and the fixed cylinder 52. A piston 73 is provided in the fixed cylinder 52. The piston 73 is fixedly connected to the telescopic column 53. A return spring 74 is provided between the piston 73 and the inner wall of the fixed cylinder 52 away from the follower seat 51. An air inlet pipe 75 connected to the cavity 71 is provided at the center of the upper outer wall of the follower seat 51. A valve 76 is installed on the air inlet pipe 75.

[0039] To further explain, the slag removal mechanism, in addition to the conventional up-and-down reciprocating movement of the scraper 68 following the follower seat 51, can also achieve short-range up-and-down reciprocating movement of its own. This allows the scraper 68 to generate a stronger scraping force during the slag removal process, effectively dealing with stubborn slag and significantly improving the slag removal effect. Furthermore, the bolted fixing of the blade holder 67 and the scraper 68 facilitates the replacement of the scraper 68 to adapt to boilers 1 with different sidewall lengths.

[0040] To further explain, by setting up the bonding mechanism 7 and using air pressure to drive the piston 73 to move, the scraper 68 can quickly bond to boilers 1 of different sizes, which significantly improves applicability.

[0041] To further explain, L-shaped positioning plates 21 are fixedly connected to the four side walls of the top seat 2. Positioning bolts 22 are threaded onto the L-shaped positioning plates 21. One end of the positioning bolts 22 is provided with an anti-slip pad 23. Through the above structure, the top seat 2 can be fixed on boilers 1 of different sizes.

[0042] It should be noted that this utility model is a slag removal device for a thermal power plant boiler. In use, the boiler mesh 11 of the boiler 1 is removed, and then the top seat 2 is placed above the boiler 1. The air pump is connected to the air inlet pipe 75, and then the air pump is started to pressurize the cavity 71. Through the connecting groove 72, air enters each fixed cylinder 52, pushing the piston 73 to move. The movement of the piston 73 drives the telescopic column 53 to move, thereby driving the scraper 68 to move. During this process, if a scraper 68 first adheres to the inner wall of the boiler 1, it will be blocked by the boiler 1 and will no longer move. However, the air pressure will continue to push the remaining pistons 73 until all scrapers 68 are tightly adhered to the inner wall of the boiler 1. Then, the valve 76 is closed and the connection between the air pump and the air inlet pipe 75 is disconnected. Then, the four positioning bolts 22 are rotated respectively. The positioning bolts 22 will drive the anti-slip pad 23 to move towards the outer wall of the boiler 1, so that the anti-slip pad 23 is tightly attached to the boiler 1, thus completing the fixation of the top seat 2 and keeping the top seat 2 stable during the slag removal process. Then, start the drive motor 4 and the slag removal motor 62. The output shaft of the drive motor 4 drives the reciprocating screw 41 to rotate. When the reciprocating screw 41 rotates, it can cause the moving seat 5 to move the follower seat 51, thereby causing the scraper 68 to move and remove slag from the inner wall of the boiler 1. The output shaft of the slag removal motor 62 can drive the drive disc 63 to rotate. The rotation of the drive disc 63 can drive the fixed rod 631 to rotate. When the fixed rod 631 rotates, it can cause the reciprocating block 66 to move back and forth continuously in short strokes under the limit of the two sliding columns 65. This causes the scraper 68 to move back and forth continuously in short strokes through the knife holder 67, so that the scraper 68 generates a stronger scraping force during the slag removal process, which can effectively deal with stubborn slag and greatly improve the slag removal effect. After the slag removal is completed, reverse the positioning bolt 22 to make the anti-slip pad 23 disengage from the boiler 1. Then open the valve 76 to release the air. After releasing the air pressure, the piston 73 is reset under the push of the return spring 74, thereby resetting the scraper 68. Then the top seat 2 can be removed.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A slag removal device for a thermal power plant boiler, characterized in that, include: Boiler (1), the bottom of which is fixedly connected with a furnace mesh (11) by bolts; Top seat (2); L-shaped support plate (3), the L-shaped support plate (3) is fixedly installed on the lower side wall of the top seat (2); The drive motor (4) is mounted on the upper side wall of the top seat (2). The output shaft of the drive motor (4) passes through the top seat (2) and is fixedly connected to a reciprocating screw (41). The lower end of the reciprocating screw (41) is rotatably connected to the lower inner wall of the L-shaped support plate (3). The movable seat (5) is threaded onto the reciprocating screw (41). A follower seat (51) is fixedly connected to the movable seat (5). Four fixed cylinders (52) are arranged around the outer side wall of the follower seat (51). A telescopic column (53) is slidably arranged inside the fixed cylinder (52). The slag removal mechanism (6) is located at one end of the telescopic column (53) and is used to scrape and remove slag from the inner wall of the boiler (1). The bonding mechanism (7) is mounted on the follower seat (51) and is used to make the slag removal mechanism (6) bond to the inner wall of the boiler (1).

2. The ash removal device for a thermal power plant boiler according to claim 1, characterized in that: The slag removal mechanism (6) includes a mounting frame (61), which is fixedly mounted on one end of a telescopic column (53). A slag removal motor (62) is mounted on the inner wall of one side of the mounting frame (61). The output shaft of the slag removal motor (62) extends to the outer side of the mounting frame (61) and is fixedly connected to a drive disc (63). A fixing rod (631) is fixedly connected to the edge of one side wall of the drive disc (63). Two symmetrically distributed limiting plates (64) are fixedly connected to one side outer wall of the mounting frame (61). A sliding column (65) is slidably inserted on the limiting plate (64). A reciprocating block (66) is fixedly connected between the two sliding columns (65). A through groove (661) is opened on the reciprocating block (66). The fixing rod (631) extends into the through groove (661). A knife holder (67) is fixedly connected to one side wall of the reciprocating block (66). A scraper (68) is fixedly connected to the knife holder (67) by bolts.

3. The ash removal device for a thermal power plant boiler according to claim 1, characterized in that: The fitting mechanism (7) includes a cavity (71), which is located inside the follower seat (51). A connecting groove (72) is provided between the cavity (71) and the fixed cylinder (52). A piston (73) is provided inside the fixed cylinder (52). The piston (73) is fixedly connected to the telescopic column (53). A return spring (74) is provided between the piston (73) and the inner wall of the fixed cylinder (52) away from the follower seat (51). An air inlet pipe (75) communicating with the cavity (71) is provided at the center of the upper outer wall of the follower seat (51). A valve (76) is installed on the air inlet pipe (75).

4. The ash removal device for a thermal power plant boiler according to claim 1, characterized in that: A guide rod (31) is fixedly connected between the lower inner wall of the L-shaped support plate (3) and the top seat (2), and the movable seat (5) is slidably engaged with the guide rod (31).

5. The ash removal device for a thermal power plant boiler according to claim 1, characterized in that: L-shaped positioning plates (21) are fixedly connected to the four side walls of the top seat (2). Positioning bolts (22) are threaded onto the L-shaped positioning plates (21). One end of the positioning bolts (22) is provided with an anti-slip pad (23).

6. The ash removal device for a thermal power plant boiler according to claim 1, characterized in that: Two symmetrically distributed guide grooves are provided on one side wall of the fixed cylinder (52), and a guide rail (531) adapted to the guide groove is fixedly connected to the telescopic column (53).

Images