CN204455167U - Flat pattern fire grate - Google Patents
Flat pattern fire grate Download PDFInfo
- Publication number
- CN204455167U CN204455167U CN201420805196.7U CN201420805196U CN204455167U CN 204455167 U CN204455167 U CN 204455167U CN 201420805196 U CN201420805196 U CN 201420805196U CN 204455167 U CN204455167 U CN 204455167U
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- CN
- China
- Prior art keywords
- arc block
- fire grate
- intermediate mass
- column
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Coke Industry (AREA)
Abstract
The utility model is mainly used in gas-fired field in metallurgy industry ironmaking system blast funnace hot blast stove, in particular to a kind of flat pattern fire grate, comprise the intermediate mass between the arc block of periphery and arc block, bottom arc block and intermediate mass, all column is set, arc block and intermediate mass are distributed with through hole, be provided with between adjacent arc block, between arc block and intermediate mass and hang hole, the installation place between arc block and column, between intermediate mass and column all arranges open holes.Greatly reduce the thermal distortion of fire grate itself, a whole set of fire grate structural weight increases a little to some extent, but the life-span extends greatly.And through hole edge adopts arc structure, decreases the generation of casting stress, be also conducive to increasing the fire grate life-span.
Description
Technical field
The utility model relates to a kind of flat pattern fire grate, is mainly used in gas-fired field in metallurgy industry ironmaking system blast funnace hot blast stove.
Background technology
Conventional small blast funnace hot blast stove fire grate used is spherical and conical.Save coke due to current environmental requirement save energy to use, blast furnace wind pushing temperature is provided as far as possible, requires that wind pushing temperature reaches 1250 DEG C at present.Along with blast furnace system operation and the raising of technique, require that Grates for Blast Heating Furnace reaches 25 ~ 30 years work-ing life, namely two blast furnace campaign in generation.Thus it is also more and more higher to the performance requriements of fire grate.Owing to containing certain basic oxide in gas dust, the raising of wind pushing temperature, is strengthened by the gas velocity of fire grate, strengthens fire grate through hole dynamics of washing away; The distortion of fire grate itself, displacement, buckling phenomenon strengthen.Many reasons causes fire grate scorification, crackle, distortion, service life reduction.Load 19 ~ the 22kg/mm of fire grate own
2, flue gas is by temperature 150 ~ 250 DEG C, and in maintenance process, temperature is normal temperature.Due to the change of long-term temperature, thermal distortion is frequently abnormal.Along with the raising of wind pushing temperature and the enhancing of smelting strength of blast furnace, spherical or conical fire grate thermal distortion strengthens, and reduces work-ing life a lot, cannot meet production requirement.Due to the change of temperature, spherical fire grate there will be sphere and the smooth shirt rim coefficient of expansion is different, and cause producing gap between fire grate and joist, all weighing acts on fire grate, and aggravation fire grate destroys.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of rational in infrastructure, improve work-ing life and working strength, the flat pattern fire grate of cracking resistance line, distortion.
Flat pattern fire grate described in the utility model, comprise the intermediate mass between the arc block of periphery and arc block, bottom arc block and intermediate mass, all column is set, arc block and intermediate mass are distributed with through hole, be provided with between adjacent arc block, between arc block and intermediate mass and hang hole, the installation place between arc block and column, between intermediate mass and column all arranges open holes.
Fire grate piecemeal is arranged, and every block is all by upright supports, and monolithic fire grate is stressed separately, support stress point is many, improve the intensity of every block fire grate, fire grate and column material all can be set to heat resisting iron RTCrl, there is not the phenomenon that the different coefficient of expansion of material differs.Hanging hole is convenient to hang when mounted, and open holes is convenient to install column.
Described column is set to hollow pillar stand, and the outer side mid-way in hanging hole arranges breach, and open holes comprises holes, and holes central bottom position arranges breach, communicates bottom holes.Arrange breach be convenient to hanging and install.
Be the slot of long 300mm, wide 30mm bottom described open holes, the arc transition of to be diameter be at two ends 30mm.Through hole edge adopts arc structure, decreases the generation of casting stress, and being also conducive to increases the fire grate life-span.
Described arc block is evenly set to 6, and arrange intermediate mass in the middle of 6 arc blocks, arc block and intermediate mass form circle.
The beneficial effects of the utility model are:
Greatly reduce the thermal distortion of fire grate itself, a whole set of fire grate structural weight increases a little to some extent, but the life-span extends greatly.And through hole edge adopts arc structure, decreases the generation of casting stress, be also conducive to increasing the fire grate life-span.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of Fig. 1 central post.
Fig. 3 is the structural representation of arc in Fig. 1.
Fig. 4 is the A-A cross section structure schematic diagram hanging hole in Fig. 3.
Fig. 5 is the B-B cross section structure schematic diagram of open holes in Fig. 3.
Fig. 6 is the cross section structure schematic diagram of C-C in Fig. 5.
In figure: 1, intermediate mass 2, arc block 3, column 4, through hole 5, open holes 6, hanging hole.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Fig. 1 ~ Fig. 6, flat pattern fire grate described in the utility model, comprise the intermediate mass 1 between the arc block 2 of periphery and arc block 2, bottom arc block 2 and intermediate mass 1, column 3 is all set, arc block 2 and intermediate mass 1 are distributed with through hole 4, be provided with between adjacent arc block 2, between arc block 2 and intermediate mass 1 and hang hole 6, the installation place between arc block 2 and column 3, between intermediate mass 1 and column 3 all arranges open holes 5.Column 3 is set to hollow pillar stand, and the outer side mid-way in hanging hole 6 arranges breach, and open holes 5 comprises holes, and holes central bottom position arranges breach, communicates bottom holes.Be the slot of long 300mm, wide 30mm bottom open holes 5, the arc transition of to be diameter be at slot two ends 30mm.Arc block 2 is evenly set to 6, and arrange intermediate mass 1 in the middle of 6 arc blocks, arc block 2 and intermediate mass 1 form circle.
During use, assemble between each piece of flat pattern fire grate and column 3, putting into steel melting furnace can use, and increases the service life.
Claims (4)
1. a flat pattern fire grate, it is characterized in that: comprise the intermediate mass (1) between the arc block (2) of periphery and arc block (2), arc block (2) and intermediate mass (1) bottom all arrange column (3), arc block (2) and intermediate mass (1) are distributed with through hole (4), between adjacent arc block (2), be provided with between arc block (2) and intermediate mass (1) and hang hole (6), between arc block (2) and column (3), installation place between intermediate mass (1) and column (3) all arranges open holes (5).
2. flat pattern fire grate according to claim 1, it is characterized in that: column (3) is set to hollow pillar stand, the outer side mid-way of hanging hole (6) arranges breach, open holes (5) comprises holes, holes central bottom position arranges breach, communicates bottom holes.
3. flat pattern fire grate according to claim 2, is characterized in that: open holes (5) bottom is long 300mm, the slot of wide 30mm, the arc transition of to be diameter be at two ends 30mm.
4. the flat pattern fire grate according to claim 1,2 or 3, it is characterized in that: arc block (2) is evenly set to 6, arrange intermediate mass (1) in the middle of 6 arc blocks, arc block (2) and intermediate mass (1) are formed circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805196.7U CN204455167U (en) | 2014-12-17 | 2014-12-17 | Flat pattern fire grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805196.7U CN204455167U (en) | 2014-12-17 | 2014-12-17 | Flat pattern fire grate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204455167U true CN204455167U (en) | 2015-07-08 |
Family
ID=53662080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420805196.7U Expired - Fee Related CN204455167U (en) | 2014-12-17 | 2014-12-17 | Flat pattern fire grate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204455167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136471A (en) * | 2021-03-30 | 2021-07-20 | 北京卡卢金热风炉技术有限公司 | High-temperature-resistant grate, hot blast stove system and method for heating medium-temperature air |
-
2014
- 2014-12-17 CN CN201420805196.7U patent/CN204455167U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136471A (en) * | 2021-03-30 | 2021-07-20 | 北京卡卢金热风炉技术有限公司 | High-temperature-resistant grate, hot blast stove system and method for heating medium-temperature air |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20161217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |