CN203991239U - A kind of strip-type screen with self-purification function - Google Patents
A kind of strip-type screen with self-purification function Download PDFInfo
- Publication number
- CN203991239U CN203991239U CN201420358345.XU CN201420358345U CN203991239U CN 203991239 U CN203991239 U CN 203991239U CN 201420358345 U CN201420358345 U CN 201420358345U CN 203991239 U CN203991239 U CN 203991239U
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- grating
- group
- turning cylinder
- strip
- coke
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Abstract
A kind of strip-type screen with self-purification function, comprise: some grating groups, longitudinally interval forms screen cloth side by side, every group of grating group includes some gratings, grating is along laterally equidistant parallel arrangement in grating group, and grating is shaped as cylinder, and section is round rectangle or ellipse, axial centre is provided with fixing trip shaft, and radial side is wherein respectively equipped with the first turning cylinder and the second turning cylinder on pair of horns position; Some connection rod set, every group comprises two pairs of upper and lower connecting rods, described upper connecting rod forms axle with the first turning cylinder and the second turning cylinder respectively with lower link and is connected; Some dwangs, middle part is connected with upper and lower connecting rod respectively with end, one end; One push rod, is connected with described dwang the other end.Described strip-type screen, when realization is sieved blast furnace coke, improves the accuracy rate of coke sieve fraction, prevents that screen cloth from stopping up, and without manually screen cloth being carried out to block clearing, increases work efficiency, and improves capacity utilization.
Description
Technical field
The utility model belongs to blast furnace raw material screening field, particularly, relates to a kind of strip-type screen with self-purification function.
Background technology
Existing blast-furnace coke screening is used strip-type screen structure as shown in Figure 1, comprise by some sieve plates 200 horizontal intervals screen cloth 100 forming of arranging, every group of sieve plate 200 comprises the bar screen 201 that some levels are equidistantly arranged, described bar screen 201 is shaped as cylinder, middle part offers through hole 2011, described some bar screens 201 one end are connected to form described sieve plate 200 by connecting plate 202, can not enter the spacing of the minimum particle size of stove with the spacing between bar screen 201 for the coke of fixing.
In use, the batcher vibration of strip-type screen top, coke in feed bin because of Action of Gravity Field from vibration material lock out, roll to bar screen plate by batcher, every grating spacing of bar screen is by the compass screen surface of vibration, coke rolls on screen cloth 100, and wherein grade tumbles in weighing bucket and prepares into blast furnace along sieve plate 200 than the coke that between bar screen 201, spacing is large; The coke that wherein grade is less than spacing between bar screen 201 has been fallen the gap between bar screen 201 and has been returned to belt and reclaim, and uses and can not directly enter blast furnace.
Although the structural design of this strip-type screen can meet the requirement of blast-furnace coke screening substantially, also has following critical defect:
The coke that between some and bar screen 201, spacing is close is because vibration and gravity are easy to be stuck between bar screen 201, this situation happens occasionally, once sieve plate 200 is because of coke obstruction, originally also just cannot the gap between bar screen 201 than the little coke of the grade of technical requirement and powder fall and return belt, they are taken advantage of a situation and prepare into stove with having entered in weighing bucket together with the coke of normal grade.Now, screen cloth will be lost original sieving capacity, and blast furnace is extremely responsive to entering the end amount of stove powder, cannot be guaranteed once enter the coke quality of stove, will directly threaten the direct motion of the working of a furnace, brings great difficulty to the stable operation of blast furnace.
In order to ensure that coke is unlikely to seriously to stop up the gap between bar screen 201 in sieve plate 200, just needed artificial block clearing every 2 hours, greatly increase labour intensity, for also necessary this feed bin of stopping using of block clearing, personnel need to climb up sieve plate block clearing, so dangerous, and also more inefficiency can be sayed.
Utility model content
The purpose of this utility model is to provide a kind of strip-type screen with self-purification function, described strip-type screen is when realization is sieved blast furnace coke, improve the accuracy rate of coke sieve fraction, prevent that screen cloth from stopping up, without manually screen cloth being carried out to block clearing, increase work efficiency, improve capacity utilization.
For achieving the above object, the utility model mainly adopts following technical scheme:
A kind of strip-type screen with self-purification function, comprise: some grating groups, longitudinally interval is formed for sieving the screen cloth that is suitable for blast-furnace roasting coke side by side, every group of grating group includes some gratings, the laterally equidistant parallel arrangement in described grating edge in grating group, described grating is shaped as cylinder, section is round rectangle or ellipse, described grating axial centre is provided with fixing trip shaft, and radial side is wherein respectively equipped with for making first turning cylinder and second turning cylinder of described grating along fixing trip shaft upset on pair of horns position; Some connection rod set, corresponding described grating group, every group comprises two pairs of upper and lower connecting rods, the every pair of upper connecting rod and lower link are connected with the first turning cylinder and the second turning cylinder on each grating two sides of described grating group respectively; Some dwangs, respectively corresponding every pair of upper and lower connecting rod; The middle part of described dwang is connected with upper and lower connecting rod respectively with end, one end; One push rod, is connected with each dwang the other end.
Again, the beeline between grating adjacent wall is the minimum grain size that is suitable for blast-furnace roasting coke when grating horizontal positioned in described grating group.
Separately, described grating flip angle is 0～90 °.
Compared with prior art, the beneficial effects of the utility model are:
Grating bottom surface is improved to ellipse or round rectangle by circle, spacing between grating sidewall adjacent wall when spacing is less than vertical placement between grating adjacent wall while making horizontal positioned, the use of connecting rod and lower link and the first turning cylinder and the second turning cylinder in cooperation, thereby realize by card coke particle diameter and be less than the rear grating spacing of upset by the size variation of grating spacing after overturning, and then realize and be not suitable for the self-purification function that the coke of blast-furnace roasting falls naturally, ensure the screening efficiency of grating, guarantee that the particle diameter that enters oven coke meets blast-furnace roasting standard, and then guarantee the stable of conditions of blast furnace.
Brief description of the drawings
Fig. 1 is the structural representation of existing blast-furnace coke screening strip-type screen.
Fig. 2 is the structural representation that the utlity model has grating horizontal positioned in the strip-type screen of self-purification function.
Fig. 3 is the spacing between adjacent grating and grating cross dimensions schematic diagram in Fig. 2.
Fig. 4 is the structural representation that in Fig. 2, grating is vertically placed.
Fig. 5 is the spacing schematic diagram between adjacent grating in Fig. 4.
Fig. 6 is the flow chart of the utility model strip-type screen cleaning.
Detailed description of the invention
Referring to Fig. 2～Fig. 6, a kind of strip-type screen with self-purification function of the present utility model, comprise: a kind of strip-type screen with self-purification function, comprise: some grating groups 1, longitudinally interval is formed for sieving the screen cloth 2 that is suitable for blast-furnace roasting coke side by side, every group of grating group 1 includes some gratings 11, described grating is laterally equidistant parallel arrangement on the interior edge of grating group 1, described grating 11 is shaped as cylinder, section is round rectangle or ellipse, described grating 11 axial centre are provided with fixing trip shaft 12, radial side is wherein respectively equipped with the first turning cylinder 13 and the second turning cylinder 14 for described grating 11 is overturn along fixing trip shaft 12 on pair of horns position, some connection rod set 3, corresponding described grating group 1, every group comprises two pairs of upper and lower connecting rods 31,32, the every pair of upper connecting rod 31 and lower link 32 are connected 14 with the first turning cylinder 13 and the second turning cylinder on each grating 11 two sides of described grating group 1 respectively, some dwangs 4, respectively corresponding every pair of upper and lower connecting rod 31,32, the middle part of described dwang is connected with upper and lower connecting rod 31,32 respectively with end, one end, one push rod 5, is connected with each dwang 4 the other end.
Again, the beeline between grating 11 adjacent walls is the minimum grain size that is suitable for blast-furnace roasting coke when interior grating 11 horizontal positioned of described grating group 1.
Separately, described grating 11 flip angles are 0～90 °.
Strip-type screen cleaning process described in the utility model is as follows:
Under use state, the grating 11 that section is round rectangle is arranged along level is square, and 11 bottom surfaces are long is L, and wide is W, and the beeline between grating 11 adjacent walls is a, coke sieve fraction >=a now.
But because on-the-spot coke is by after the air storage of place, its powder can increase relatively with moisture, and while sieve by Jiao, powder is constantly piled up, the easy clamping stagnation of coke of close grade is in the middle of grating 11, the final burnt phenomenon of card that forms, stops up screen cloth 2, and the granule level coke under former should sieve is because screen cloth 2 is blocked, thereby and the coke that meets grade requirement together enters blast furnace, make to sieve thing grade and diminish, affect screening efficiency, have a strong impact on blast furnace trouble-free operation.
Promote push rod 5, drive upper connecting rod 31 and lower link 32 to move laterally by dwang 4, and then drive the first turning cylinder 13 and the second turning cylinder 14 to make described grating 11 overturn 90 ° along fixing trip shaft 12, now, cross section is the size variation of grating 11 spacing after round rectangle or 11 upsets of oval-shaped grating, can realize by card coke particle diameter and be less than spacing between the grating 11 overturning after 90 ° (when grating 11 is vertically placed, between grating 11 sidewalls, shortest spacing is a ', a ' > a), thereby realize the self-purification function naturally being fallen by card coke, make grating 11 recover original screening efficiency, ensure to enter the grade of oven coke, more ensure the stable smooth operation of the working of a furnace.
Adjacent grating 11 spacing while being screen cloth 2 normal use
Screen cloth 2 stops up adjacent grating 1 spacing while needing cleaning
Because of L>W,
therefore grating 11 overturns, grating 11 spacing after 90 ° increase.
The utility model strip-type screen has improved the accuracy rate of sieve fraction, is the stable operation establish a firm foundation of the working of a furnace; Having realized one can self-cleaning screen cloth function; Significantly reduce the labour intensity that screen cloth is carried out to block clearing; Because of without the block clearing of access arrangement inside, guarantee personal security; Block clearing efficiency is high, without stopping storehouse block clearing, has improved capacity utilization, and in sum, the present invention can realize block clearing rapidly and efficiently under the prerequisite that ensures screening quality, has guaranteed the grade quality of the lower coke of sieve, thereby has had very large effect to stablizing smooth operation of furnace.
It should be noted that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described.Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical scheme of utility model, and not departing from the scope of technical solutions of the utility model, it all should be encompassed in claim scope of the present utility model.
Claims (3)
1. a strip-type screen with self-purification function, is characterized in that, comprising:
Some grating groups, longitudinally interval is formed for sieving the screen cloth that is suitable for blast-furnace roasting coke side by side, every group of grating group includes some gratings, the laterally equidistant parallel arrangement in described grating edge in grating group, described grating is shaped as cylinder, section is round rectangle or ellipse, and described grating axial centre is provided with fixing trip shaft, and radial side is wherein respectively equipped with for making first turning cylinder and second turning cylinder of described grating along fixing trip shaft upset on pair of horns position;
Some connection rod set, corresponding described grating group, every group comprises two pairs of upper and lower connecting rods, the every pair of upper connecting rod and lower link are connected with the first turning cylinder and the second turning cylinder on each grating two sides of described grating group respectively;
Some dwangs, respectively corresponding every pair of upper and lower connecting rod; The middle part of described dwang is connected with upper and lower connecting rod respectively with end, one end;
One push rod, is connected with each dwang the other end.
2. the strip-type screen with self-purification function according to claim 1, is characterized in that, beeline when the interior grating horizontal positioned of described grating group between grating adjacent wall is the minimum grain size that is suitable for blast-furnace roasting coke.
3. the strip-type screen with self-purification function according to claim 1, is characterized in that, described grating flip angle is 0～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358345.XU CN203991239U (en) | 2014-06-30 | 2014-06-30 | A kind of strip-type screen with self-purification function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358345.XU CN203991239U (en) | 2014-06-30 | 2014-06-30 | A kind of strip-type screen with self-purification function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203991239U true CN203991239U (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420358345.XU Expired - Fee Related CN203991239U (en) | 2014-06-30 | 2014-06-30 | A kind of strip-type screen with self-purification function |
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| Country | Link |
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| CN (1) | CN203991239U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106561174A (en) * | 2016-11-15 | 2017-04-19 | 济南大学 | Concave plate sieve of wheat and rice threshing device |
| CN107930835A (en) * | 2017-12-26 | 2018-04-20 | 徐工集团工程机械有限公司 | A kind of batcher of the rod screening mechanism with variable spacing |
| PL127219U1 (en) * | 2018-04-09 | 2019-10-21 | Kghm Zanam Spółka Akcyjna | Sieve machine grid |
| CN110841896A (en) * | 2019-11-25 | 2020-02-28 | 张桂云 | High-uniformity feed particle production system and feed production process method |
-
2014
- 2014-06-30 CN CN201420358345.XU patent/CN203991239U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106561174A (en) * | 2016-11-15 | 2017-04-19 | 济南大学 | Concave plate sieve of wheat and rice threshing device |
| CN107930835A (en) * | 2017-12-26 | 2018-04-20 | 徐工集团工程机械有限公司 | A kind of batcher of the rod screening mechanism with variable spacing |
| PL127219U1 (en) * | 2018-04-09 | 2019-10-21 | Kghm Zanam Spółka Akcyjna | Sieve machine grid |
| CN110841896A (en) * | 2019-11-25 | 2020-02-28 | 张桂云 | High-uniformity feed particle production system and feed production process method |
| CN110841896B (en) * | 2019-11-25 | 2021-05-04 | 哈尔滨兴民丰牧业有限公司 | High-uniformity feed particle production system and feed production process method |
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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: 20141210 Termination date: 20160630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |