CN114806611A

CN114806611A - Dust cleaning device for checker bricks of coke oven regenerator

Info

Publication number: CN114806611A
Application number: CN202210408416.1A
Authority: CN
Inventors: 夏春; 黎耀南; 梅俊
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-07-29
Anticipated expiration: 2042-04-19
Also published as: CN114806611B

Abstract

The application discloses a dust cleaning device for checker bricks of a regenerative chamber of a coke oven. Among this technical scheme, when needs clear up the operation to the surface laying dust of checker brick, only need to make the rotation axis rotatory, the conveying of clearance chain is driven along with rotating to the clearance sprocket, scrapes the ball this moment and just can produce translational motion along with the conveying of clearance chain to the laying dust on checker brick surface produces the clearance action. Therefore, the cleaning efficiency is improved.

Description

Dust cleaning device for checker bricks of coke oven regenerator

Technical Field

The application relates to the technical field of industrial furnace construction, in particular to a dust cleaning device for checker bricks of a regenerative chamber of a coke oven.

Background

The coke oven checker brick is a porous refractory brick, and high-temperature flue gas waste heat discharged by a combustion chamber is recovered in a heat storage chamber through alternative heat storage and heat release. In the use process of the coke oven, the checker bricks stacked on the upper part of the regenerator are easy to damage because the dust brought in the coal gas is deposited on the surface of the checker brick at the top layer, the dust is accumulated for a long time, the high temperature of the dust and other factors can cause the softening, deformation and foaming of the lattice holes of the checker bricks, and further cause the blockage of the upper-layer checker bricks. Because the flow of hot air flow in the lattice holes is reduced, the temperature of brick bodies is reduced, and the heat exchange capacity of the regenerator is insufficient, so that the coke quality is poor.

In the related art, the surface dust of the checker bricks is cleaned usually by manual cleaning, the cleaning efficiency is low, the hole penetration rate of the checker bricks can be reduced when the dust is not cleaned in time, and the service life of the checker bricks is shortened.

Disclosure of Invention

In view of this, the application provides a dust cleaning device of coke oven regenerator checker brick, can realize automatically clearing up the laying dust on checker brick surface automatically, has improved cleaning efficiency, improves the life of checker brick moreover.

The application provides dust cleaning device of coke oven regenerator checker brick includes:

a rotating shaft, a cleaning chain wheel is coaxially and fixedly arranged;

the cleaning chain is in transmission connection with the cleaning chain wheel;

and the scraping ball is fixedly arranged on the cleaning chain and used for generating dust cleaning action on the surface of the checker brick along with the transmission of the cleaning chain when the rotating shaft is rotated by external force.

Optionally, the cleaning chain is provided with a plurality of chains, a transmission chain wheel is coaxially and fixedly connected to the rotating shaft corresponding to each cleaning chain, and the transmission chain wheels are in transmission connection through the transmission chain.

Optionally, the cleaning device further comprises a seal box, and the cleaning chain wheel is accommodated in the seal box.

Optionally, the scraping ball is provided with burrs.

Optionally, the upper part of the seal box is connected with the seal wall in a sealing manner, and the lower part of the seal box is provided with a valve.

Optionally, the side surface of the seal box is provided with a mounting hole.

Optionally, the inner wall surface of the sealed box is provided with a heat insulation castable, a lightweight brick, a ceramic fiber blanket and a silica brick in sequence.

Above provide coke oven regenerator checker brick's dust cleaning device, when the operation is cleared up to the surperficial laying dust of checker brick in needs, only need to make the rotation axis rotatory, the clearance sprocket drives the conveying of clearance chain along with rotating, scrapes the ball this moment and just can produce translational motion along with the conveying of clearance chain to the laying dust on checker brick surface produces the clearance action. Therefore, the cleaning efficiency is improved. Moreover, dust cleaning device can in time carry out the dust clearance to the checker brick, guarantees that the check hole is clean, can prolong the life-span of checker brick.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

FIG. 1 is a block diagram providing a perspective view of a checker brick according to an embodiment of the present application.

Fig. 2 is a block diagram providing yet another perspective of a checker brick according to an embodiment of the present application.

Fig. 3 is a structural view of the dust cleaning apparatus installed in the heat storage chamber according to the embodiment of the present application.

Fig. 4 is a structural diagram of a dust cleaning apparatus in a dust cleaning state according to an embodiment of the present application.

Fig. 5 is a structural diagram of a dust cleaning apparatus according to an embodiment of the present application.

Wherein the elements in the figures are identified as follows:

100-checker bricks; 120-brick body; 120 a-cells; 120 b-brick groove; 130-a boss; 140-crown; 150-transverse partition ribs;

200-a wall body; 200 a-a positioning groove; 210-a main wall; 220-single wall; 230-partition walls;

300-dust cleaning device; 320-a rotation axis; 330-cleaning the chain wheel; 340-cleaning the chain; 350-scraping the ball; 360-a drive sprocket; 370-a drive chain; 380-sealing box; 380 a-mounting hole; 381-top seat; 382-a base;

500-regenerator.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Before describing the technical solution of the present application, it is necessary to explain the following background of the invention of the present application.

It is common that the coke oven checker brick 100 is a porous refractory brick, and the residual heat of high temperature flue gas discharged from a combustion chamber is recovered by alternately storing and releasing heat in a heat storage chamber. In the use process of the coke oven, the checker bricks 100 stacked on the upper part of the regenerator are easy to be damaged because the dust brought in the gas is deposited on the surface of the checker brick 100 at the top layer, the dust is accumulated for a long period of time, the high temperature of the dust and other factors can cause the reflow, deformation and foaming of the grid holes 120a of the checker bricks 100, and further cause the blockage of the upper layer checker bricks 100. Because the flow of hot air flow in the grid holes 120a is reduced, the temperature of the brick bodies 120 is reduced, and the heat exchange capacity of the regenerative chambers is insufficient, so that the coke quality is poor.

In the related art, the cleaning of dust on the surface of the checker brick 100 usually depends on manual cleaning, and the cleaning efficiency is low. And manual cleaning may result in untimely cleaning, and untimely dust cleaning may reduce the checker brick porosity, reducing the service life of the checker brick.

Based on the above-mentioned problems, the inventor proposes a dust cleaning apparatus 300 for a checker brick 100 of a coke oven regenerator, wherein when the dust accumulated on the surface of the checker brick 100 needs to be cleaned, the cleaning chain wheel 330 rotates to drive the cleaning chain 340 to transmit, and the scraping ball 350 moves in a translation manner along with the transmission of the cleaning chain 340, so as to clean the dust accumulated on the surface of the checker brick 100. Therefore, the cleaning efficiency is improved. Moreover, dust cleaning device can in time carry out the dust clearance to the checker brick, guarantees that the check hole is clean, can prolong the life-span of checker brick. Therefore, the invention is created.

Referring to fig. 4-5, embodiments of the present application provide a dust cleaning apparatus 300 for coke oven regenerator checker bricks 100, comprising:

a rotating shaft 320 coaxially and fixedly provided with a cleaning sprocket 330;

a cleaning chain 340, which is connected to the cleaning sprocket 330 in a driving manner;

and a scraping ball 350 fixedly disposed on the cleaning chain 340 for generating a dust cleaning action on the surface of the checker brick 100 along with the transmission of the cleaning chain 340 when the rotating shaft 320 is rotated by an external force.

It should be appreciated that only one rotating shaft 320 or cleaning sprocket 330 is illustrated in fig. 4 for the same cleaning chain 340. This is not to be construed as driving the rotating shaft 320 of the cleaning sprocket 330 or the cleaning sprocket 330 only one. In essence, the number of the rotating shafts 320 or the cleaning sprockets 330 driving the cleaning sprockets 330 is two, and the cleaning chain 340 has a shape of a kidney circle or the like having a head end and a tail end according to the conveying direction. I.e. one of the rotating shafts 320 or cleaning chain is connected to the head end of the cleaning chain 340 and the other rotating shaft 320 or cleaning chain is connected to the tail end of the cleaning chain 340. One of the two rotating shafts 320 or cleaning sprockets 330 is a driving wheel or driving shaft, and the other is a driven wheel or driven shaft.

Based on the description of the cleaning chain 340, the principle of the expression "dust cleaning action of the scraping balls 350 on the surface of the grid brick 100 during the driving of the cleaning chain 340" should be understood as follows: the cleaning chain 340 has two chain units symmetrically arranged along the connecting line of the two rotating shafts 320 or the two cleaning sprockets 330 at the head end and the tail end of the cleaning chain 340, i.e. the two chain units move in translation and in opposite directions. Thus, when the rotating shaft 320 or the cleaning sprocket 330 is driven to rotate, the cleaning chain 340 converts the external rotation into a translation for any one of the chain units, thereby causing the scraping balls 350 to translate with respect to the surface of the checker brick 100, i.e., to perform a cleaning action.

Of course, the number of the corresponding rotating shafts 320 or cleaning sprockets 330 of the same cleaning chain 340 can also be more than 2, and the rotating shafts 320 or cleaning sprockets 330 for supporting can be provided at the non-end position of the cleaning chain 340.

In an exemplary embodiment, there are a plurality of cleaning chains 340, a driving sprocket 360 is coaxially fixed on the rotating shaft 320 corresponding to each cleaning chain 340, and the driving sprockets 360 are drivingly connected by a driving chain 370.

In this way, by providing a plurality of independent cleaning chains 340, cleaning of checker bricks 100 at different positions can be achieved. Moreover, the rotating shafts 320 corresponding to different cleaning chains 340 are connected through the transmission chain 370, so that only the same driving mechanism is needed, and the conveying of different cleaning chains 340 can be realized, thereby reducing the driving cost.

It is conceivable that the cleaning chain 340 may be mounted above the location of the checker brick 100 to be cleaned and that the control wiper balls 350 are in substantial contact with the location of the checker brick 100 to be cleaned.

In an exemplary embodiment, the scraping ball 350 is provided with a burr.

Thus, through the arrangement of the burrs, the dust which is firmly attached to the surface of the checker brick 100 can be scraped off through the spikes, and the cleaning effect is improved.

The body of the scraping ball 350 may be a high temperature resistant metal material.

In an exemplary embodiment, a seal box 380 is further included, and the cleaning sprocket 330 is contained within the seal box 380.

Thus, the design considerations for the seal box 380 are: the cleaning sprocket 330 is protected from dust.

The seal box 380 can be sealed by the regenerator on both sides of the coke oven with holes in the walls for clearing the space in which the sprocket 330 is operating.

As an exemplary implementation manner, the upper portion of the sealing box 380 is connected with the sealing wall in a sealing manner, and the lower portion is provided with a valve.

The valve can periodically remove the cleaned dust. The lower valve is provided with multiple stages, so that gas leakage is reduced while slag is removed.

In an exemplary embodiment, the seal box 380 is provided with a mounting hole 380a at a side thereof.

Thus, the design considerations for the mounting holes 380a are: the cleaning chain wheel 330 and the cleaning chain 340 are sealed after meshing adjustment, and the cleaning chain wheel also serves as a manhole for overhauling the scraping ball 350 on the cleaning chain 340.

The rotating shaft 320 penetrates through the sealed box 380, the upper end of the rotating shaft is connected with the sealed box 380 through the top seat 381, and the lower end of the rotating shaft is connected with the ground or other structures through the base 382.

In an exemplary embodiment, the inner wall surface of the sealed box 380 is sequentially provided with a heat insulation castable, a lightweight brick, a ceramic fiber blanket, and a silica brick.

Therefore, through the arrangement of the heat insulation pouring material, the light bricks, the ceramic fiber blanket and the silica bricks, the heat from the heat storage chamber can be effectively blocked, and the cleaning chain wheel 330 in the seal box 380 is prevented from being corroded.

Referring to fig. 1-3, embodiments of the present application provide a checker brick 100 for a coke oven regenerator, comprising:

a brick body 120 provided with a boss 130;

the bosses 130 are inserted into positioning grooves 200a formed in the wall 200 of the regenerator, so that the bricks 120 can be mounted on the wall 200 of the regenerator.

The boss 130 may be integrally formed with the brick body 120. The shape of the boss 130 may be a square bar shape, or other shapes according to actual needs.

The position of the boss 130 relative to the brick body 120 is exemplarily located at both ends (in the longitudinal direction) of the brick body 120, but may be a side edge (in the width direction), and the position does not substantially affect the effect of the present application.

In an exemplary embodiment, the brick body 120 is configured with a grid 120 a.

Design considerations for the grid holes 120a are: the heat in the heat storage chamber is conveniently circulated up and down through the cells 120 a.

In an exemplary embodiment, the surface of the brick body 120 is configured with a brick groove 120 b.

Thus, the design considerations for the brick wells 120b are: when the checker bricks 100 are installed in the topmost position of the regenerator wall 200, they are susceptible to the problems of dust deposition as previously mentioned. While the brick channel 120b facilitates the collection of dust deposits to reduce dust falling into the cells 120a of the top checker brick 100 to clog the checker brick 100.

It should be understood that it is most apparent from the function or function of the crown 140 in the foregoing, for the checker brick 100 located at the top level. For the non-top checker brick 100, reference is again made to fig. 4, which may omit the design of the brick channel 120 b.

As for the shape of the brick groove 120b, the cross section thereof may be U-shaped or arc-shaped, such as circular arc-shaped or elliptical arc-shaped.

Here, in order to further improve the deposition of dust into the brick groove 120b and reduce the deposition of dust into the cells 120a to block the cells 120a, a dome portion 140 having a convex shape is disposed at the middle of the brick body 120, and both ends of the dome portion 140 extend to positions communicating with the brick groove 120 b.

In this way, the dust will gradually flow toward the brick tub 120b through the crown 140 to facilitate the flow of the dust to the brick tub 120b finally. Moreover, even when dust falls on the surface of the grid hole for a short time, it is more likely to gradually slide down toward the brick groove 120b along the crown portion 140 until finally sliding down into the brick groove 120 b.

It should be understood that it is most apparent from the function or function of the crown 140 in the foregoing, for the checker brick 100 located at the top level. For a non-top checker brick 100, the design of the dome 140 may be omitted.

In an exemplary embodiment, the brick 120 is configured with transverse spacer ribs 150.

Here, the design considerations of the transverse ribs 150 are: a risk between checker bricks 100 may be artificially created, facilitating the flow of heat. In addition, the transverse ribs 150 can contribute to the enhancement of the mechanical strength of the brick body 120.

The wall 200 of the regenerator is formed with a positioning groove 200a, and the positioning groove 200a is inserted into the boss 130 of the checker brick 100 so that the brick 120 of the checker brick 100 can be supported on the wall 200 of the regenerator.

Here, the wall 200 of the regenerator may be provided according to actual needs, and for example, includes a main wall 210, a single wall 220, and partition walls 230.

The operation process of the dust-collecting cleaning operation of the present application is now described with respect to a common application scenario. It should be noted that this common embodiment is not to be taken as an identification basis for understanding the essential features of the technical problem to be solved as claimed in the present application, which is merely exemplary.

S1, in the stage of building the regenerator 500, building the main wall 210 and the single wall 220 of the regenerator 500 and stacking the checker bricks 100 alternately, after building the main wall 210 and the single wall 220 of the regenerator 500, cleaning mud and dust on the wall surface, stacking the checker bricks 100 from the center of the coke oven to the burners at two sides, and simultaneously building the partition walls 230. After the stacking of the checker bricks 100 is finished, a protective layer is laid to prevent the pollution of masonry slurry during upper construction.

S2, laying the bricks on the top of the regenerator 500, placing the top checker bricks 100 on the main wall 210 of the regenerator 500 and the brick slots 120b of the single wall 220 of the regenerator 500, and placing the cleaning chains 340 in the U-shaped slots of the top checker bricks 100. Before the inclined duct is built, a protective layer is laid on the checker bricks 100 at the top to prevent the pollution of building slurry during the upper construction.

S3, after the coke oven is built, after the dust collection process of the regenerator 500 space is completed, the protective layer is taken out, then the wall sealing at the furnace end of the regenerator 500 is carried out, and a connecting seat (not shown) connected with the seal box 380 is embedded in the corresponding position of the seal box 380.

S4, installing a sealed box 380, installing a cleaning chain wheel 330 in the sealed box 380, connecting a rotating shaft 320 with the sealed box 380 through the cleaning chain wheel 330, and then connecting a cleaning chain 340 with the cleaning chain wheel 330 in a meshing manner. The rotating shaft 320 penetrates through the sealed box 380, the upper end of the rotating shaft is connected with the sealed box 380 through the top seat 381, and the lower end of the rotating shaft is connected with the ground or other structures through the base 382.

S5, a driving sprocket 360 is mounted on the lower part of the rotating shaft 320, the driving sprockets 360 of the rotating shafts 320 are engaged and connected by a driving chain 340, and the debugging is performed by the integral driving of the electric equipment.

S6, after the above steps are completed, the inspection is performed, and the mounting hole 380a of the seal box 380 is sealed without any error.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. A dust cleaning device for checker bricks of a regenerative chamber of a coke oven is characterized by comprising:

a rotating shaft, a cleaning chain wheel is coaxially and fixedly arranged;

the cleaning chain is in transmission connection with the cleaning chain wheel;

2. The dust cleaning apparatus of claim 1, wherein there are a plurality of cleaning chains, and a driving sprocket is coaxially and fixedly connected to the rotating shaft of each cleaning chain, and different driving sprockets are drivingly connected to each other through a driving chain.

3. A dust cleaning apparatus as claimed in claim 1, further comprising a sealed box in which the cleaning sprocket is accommodated.

4. The dust cleaning apparatus of claim 1, wherein the scraper ball is provided with burrs.

5. The dust cleaning apparatus of claim 3, wherein the upper part of the sealing box is connected with the sealing wall in a sealing way, and the lower part of the sealing box is provided with a valve.

6. The dust cleaning apparatus of claim 3, wherein the side of the seal box is provided with a mounting hole.

7. The dust cleaning apparatus according to claim 3, wherein the inner wall surface of the sealed box is provided with a heat insulation castable, a lightweight brick, a ceramic fiber blanket and a silica brick in sequence.