Novel slag breaking fire grate

Abstract

The utility model relates to a novel slag breaking fire grate which comprises a pagoda-shaped fire grate body, a plurality of slag breaking plates are arranged on a bottom layer cover plate of the pagoda-shaped fire grate body, and 60-degree cutting edges are arranged at the two ends of each slag breaking plate. The slag breaking device has the beneficial effects that the slag breaking plate is mounted on the bottom-layer cover plate, the mounting position is close to a high-temperature area in the center of the gasification furnace and is a position where ash slag is most easily melted to form large slag blocks, and the slag blocks at the position are not fully cooled after being formed and are relatively easily broken; large slag blocks are subjected to primary crushing through the slag crushing plate, then the slag blocks are subjected to secondary crushing and tertiary crushing through the fire grate scraper and the crushing ring, the slag crushing plate enhances the original slag crushing capacity of the pagoda-shaped fire grate body, and the situation that the boundary dimension of the slag blocks is larger than 267 mm, and the slag blocks cannot fall into the space between the bottom-layer cover plate and the inner jacket of the gasification furnace and cannot be crushed and discharged can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grate, in particular to a novel slag-breaking grate. Background Art

[0002] The crushed coal pressurized gasifier relies on a rotating pagoda-shaped grate to evenly distribute the gasifier and discharge the ash from the gasifier. However, if the key parameter of the gasifier operation, the steam-oxygen ratio, is not properly controlled or the ash melting point is unstable, it is easy to cause the temperature in the furnace to exceed the ash melting point of the coal, making the ash melt and difficult to discharge. The pagoda-shaped grate itself has a certain slag breaking ability, but if Figure 3 As shown in the figure, the gap between the bottom cover plate of the pagoda-shaped grate and the jacket of the gasifier is 267mm. When the outer dimensions of the slag block are larger than 267mm, the slag block cannot fall between the bottom cover plate and the jacket of the gasifier and cannot be crushed and discharged. The slag blocks that are not crushed and discharged remain on the pagoda-shaped grate, which will affect the uniform distribution of the gasifier on the cross section of the gasifier, causing the working condition of the gasifier to deteriorate. At the same time, it also affects the normal operation of the pagoda-shaped grate and easily causes equipment damage. Utility Model Content

[0003] The purpose of the utility model is to provide a new type of slag breaking grate to solve the above problems existing in the prior art.

[0004] The technical problem to be solved by the utility model is to provide a new type of slag breaking grate.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A novel slag-breaking grate comprises a pagoda-shaped grate body. A plurality of slag-breaking plates are arranged on the bottom cover plate of the pagoda-shaped grate body. Both ends of the slag-breaking plates are provided with 60-degree cutting edges.

[0007] The beneficial effects of the present invention are as follows: by installing the slag breaking plate on the bottom cover plate, the installation position is close to the high temperature area in the center of the gasifier, which is the position where ash is most likely to melt and form large slag chunks, and the slag chunks here have not yet fully cooled after formation and are relatively easy to break. If the ash in the gasifier melts and forms large slag chunks due to excessive temperature, the slag breaking plate will initially break the large slag chunks, and the slag chunks will be broken a second time and a third time by the grate scraper and the crushing ring. The slag breaking plate is to enhance the original slag breaking ability of the pagoda-type grate body, and is also a supplement to the early slag breaking ability of the pagoda-type grate body and the insufficient ability to break large slag chunks. It can effectively prevent the slag chunks with an outer size greater than 267 mm from falling between the bottom cover plate and the jacket in the gasifier and being unable to be broken and discharged; the slag breaking plate 2 rotates with the rotation of the pagoda-type grate body 1, and during the rotation process, the cutting edges at both ends of the slag breaking plate 2 will cut the large ash chunks, thereby further improving the slag breaking ability of the slag breaking plate 2.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the slag breaking plate is provided with a plurality of through holes, and the top of the slag breaking plate is provided with a plurality of grooves.

[0010] Furthermore, the bottom cover plate and the slag breaking plate are integrally formed and cast.

[0011] Furthermore, there are multiple bottom cover plates, each of which is provided with a slag breaking plate, and multiple bottom cover plates are connected end to end to form a circular ring shape.

[0012] Furthermore, a plurality of reinforcing ribs are provided on the surface of the bottom cover plate.

[0013] Furthermore, the slag breaking plate is vertically arranged on the bottom cover plate, and the height of the slag breaking plate is 430-470 mm.

[0014] Furthermore, the pagoda-shaped grate body is located inside the gasifier, and the distance between the slag breaking plate and the jacket inside the gasifier is 480-520 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0017] Figure 3 This is a defect diagram of the pagoda-shaped grate body in the prior art.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0019] 1. Pagoda-shaped grate body, 11. Bottom cover plate, 2. Slag breaking plate, 21. Through hole, 22. Groove. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] like Figures 1 to 2 As shown, Example 1 of the utility model is a new type of slag breaking grate, including a pagoda-shaped grate body 1, a plurality of slag breaking plates 2 are provided on the bottom cover plate 11 of the pagoda-shaped grate body 1, and both ends of the slag breaking plates 2 are provided with a 60° cutting edge.

[0022] The slag crushing plate 2 is installed on the bottom cover plate 11, and the installation position is close to the high-temperature area in the center of the gasifier, which is the position where ash is most likely to melt and form large slag blocks. The slag blocks here have not yet cooled sufficiently after formation and are relatively easy to break. If the ash in the gasifier melts and forms large slag blocks due to excessive temperature, the slag crushing plate 2 will crush the large slag blocks for the first time, and the slag blocks will be crushed for the second and third times by the grate scraper and the crushing ring. The slag crushing plate 2 is an enhancement of the original slag crushing ability of the pagoda-type grate body 1, and it is also a supplement to the early slag crushing ability and the insufficient ability to crush large slag blocks of the pagoda-type grate body 1. It can effectively prevent the slag blocks with an outer size greater than 267 mm from falling between the bottom cover plate 11 and the jacket in the gasifier and being unable to be crushed and discharged; the slag crushing plate 2 rotates with the rotation of the pagoda-type grate body 1. During the rotation, the cutting edges at both ends of the slag crushing plate 2 will cut the large ash blocks, further improving the slag crushing ability of the slag crushing plate 2.

[0023] This embodiment 2 is a new type of slag breaking grate. On the basis of embodiment 1, a plurality of through holes 21 are provided on the slag breaking plate 2, and a plurality of grooves 22 are provided on the top of the slag breaking plate 2. The provision of the through holes 21 and the grooves 22 is beneficial to the heat dissipation of the slag breaking plate 2 and the service life of the slag breaking plate 2 is increased. In addition, the grooves 22 on the top can improve the slag breaking ability of the slag breaking plate 2.

[0024] In a specific implementation, the through holes 21 and the grooves 22 are arranged in an array with equal spacing.

[0025] This embodiment 3 is a new type of slag breaking grate. On the basis of embodiment 1, the bottom cover plate 11 and the slag breaking plate 2 are cast as one piece, which improves the stability between the bottom cover plate 11 and the slag breaking plate 2 and further improves the slag breaking ability of the slag breaking plate 2.

[0026] This embodiment 4 is a new type of slag-breaking grate. On the basis of embodiment 3, there are multiple bottom cover plates 11, and a slag-breaking plate 2 is set on each bottom cover plate 11. The multiple bottom cover plates 11 are connected end to end to form a circular ring, and the circular ring-shaped bottom cover plate 11 is divided into multiple arc-shaped bottom cover plates 11, which reduces the processing difficulty and processing cost.

[0027] This embodiment 5 is a new type of slag-breaking grate. Based on any one of embodiments 1 to 4, a plurality of reinforcing ribs are provided on the surface of the bottom cover plate 11 to improve the strength of the pagoda-shaped grate body 1 while improving the crushing performance of the pagoda-shaped grate body 1 on slag blocks.

[0028] This embodiment 6 is a new type of slag breaking grate. On the basis of any one of embodiments 1 to 4, the slag breaking plate 2 is vertically arranged on the bottom cover plate 11. The height of the slag breaking plate 2 is 430-470 mm. The slag breaking plate 2 with a moderate height can facilitate the cutting of large pieces of ash.

[0029] This embodiment 7 is a new type of slag-breaking grate. Based on any one of embodiments 1 to 4, the pagoda-shaped grate body 1 is located inside the gasifier, and the distance between the slag-breaking plate 2 and the jacket inside the gasifier is 480-520 mm. It can break the slag in the early stage of slag block formation and prevent the formation of larger slag blocks.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of slag breaking grate, characterized in that: The invention comprises a pagoda-shaped grate body (1), wherein a plurality of slag-breaking plates (2) are provided on a bottom cover plate (11) of the pagoda-shaped grate body (1), and both ends of the slag-breaking plates (2) are provided with a 60-degree cutting edge.

2. A novel slag breaking grate according to claim 1, characterized in that: The slag breaking plate (2) is provided with a plurality of through holes (21), and the top of the slag breaking plate (2) is provided with a plurality of grooves (22).

3. The novel slag breaking grate according to claim 1, characterized in that: The bottom cover plate (11) and the slag breaking plate (2) are integrally formed and cast.

4. A novel slag breaking grate according to claim 3, characterized in that: There are multiple bottom cover plates (11), each of which is provided with a slag breaking plate (2), and multiple bottom cover plates (11) are connected end to end to form a circular ring shape.

5. A novel slag breaking grate according to any one of claims 1 to 4, characterized in that: A plurality of reinforcing ribs are provided on the surface of the bottom cover plate (11).

6. A novel slag breaking grate according to any one of claims 1 to 4, characterized in that: The slag breaking plate (2) is vertically arranged on the bottom cover plate (11), and the height of the slag breaking plate (2) is 430-470 mm.

7. A novel slag breaking grate according to any one of claims 1 to 4, characterized in that: The pagoda-shaped grate body (1) is located inside the gasifier, and the distance between the slag-breaking plate (2) and the jacket inside the gasifier is 480-520 mm.

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