CN101837343A - High-efficient sticking-blocking resistant wear-resistant round roller screen - Google Patents
High-efficient sticking-blocking resistant wear-resistant round roller screen Download PDFInfo
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- CN101837343A CN101837343A CN200910064457A CN200910064457A CN101837343A CN 101837343 A CN101837343 A CN 101837343A CN 200910064457 A CN200910064457 A CN 200910064457A CN 200910064457 A CN200910064457 A CN 200910064457A CN 101837343 A CN101837343 A CN 101837343A
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Abstract
The invention discloses a high-efficient sticking-blocking resistant wear-resistant round roller screen which mainly comprises a screen frame, a screen plate, elastic brushes, brush plates, and the like. The screen plates are in arc shapes, are casted by wear-resisting steel, and are combined in parallel by a plurality of groups of screen teeth in a shape similar to a V shape, and screen cuts are striped arcs, are axially vertical to the roller screen, are in a shape similar to the V shape, and are gradually enlarged from the inside to the outside in size, therefore, the material is not easy to be blocked. One end of each elastic brush is in a spring shape, and the other end is in a straight line shape; during screening, the straight line ends of the elastic brushes extend into the screen cuts to clean off sticking and blocking material on the roller screen by stabbing, stirring and scraping and the like; the plurality of elastic brushes are regularly fixed on the arc-shaped brush plates through bolts and pressure pads, which ensures that each screen cut basically has a plurality of elastic brushes; and the brush plates can move horizontally, when the elastic brushed are worn seriously, the distance between every two brush plates can be adjusted horizontally to ensure that the elastic brushes are reused. The invention fundamentally solves the problems of material sticking and blocking in the process of material screening can completely overcome the defect that lump ore, coke, and the like stick and block screen pores due to high dust content, humid dust, and the like. The invention realizes the self-cleaning function of materials in the screening process, not only can screen out dust in the materials, but also can completely clear sticky materials away from the surfaces of the materials.
Description
Technical field:
The present invention relates to the screening of metallurgy industry bulk and granular material, specifically, a kind of exactly screening plant that is used for handling materials such as lump ore, pellet, coke, sintering deposit, agstone, quick lime.This equipment have antiseized stifled, screening efficiency is high, the life-span is long, reliable and stable, little power consumption, noise are low reaches advantages such as easy to maintenance.
Background technology:
Fine fodder is the basis of blast furnace stable smooth operation, and the fine fodder policy of implementing " high, clean, ripe, steady, little, even " is the Basic Ways of blast furnace high yield and low cost.Wherein " only " is exactly to require the stokehold well sifted to go into powder in the furnace charge.In recent years, along with further developing of blast furnace smelting technology, contain the attention that the powder rate more and more is subjected to vast ironmaking worker in the reduction furnace charge, simultaneously, reduction contains the difficult problem that the powder rate also becomes the tackling key problem of ironmaking circle.If a large amount of powder are gone into stove, will stop up the stock column space at lump zone, cause the blast furnace permeability variation, pressure reduction raises, and the avalanche material occurs when serious, and it is normal to cause coal gas to run off, and coke ratio rises, and output descends.Owing to be subjected to the influence of material self-characteristic and the restriction of existing screening plant condition, going into the stove furnace charge in the actual production, to contain the powder rate higher.At present, China's blast furnace burden structure overwhelming majority is high basicity sinter+pellet+lump ore ternary structural, and using fuel mainly is coke and winding-up part coal dust.Wherein, sintering deposit is gone into the stokehold and is all sieved processing basically, the screening plant that is adopted is a vibratory sieve, most of factory sintering deposit is gone into the stokehold and is all sieved through 2～3 roads, therefore contain the requirement that the powder rate can satisfy ironmaking substantially in the sintering deposit, cause that screening efficiency is low, dust is big but the vibratory sieve sieve aperture is often blocked in the actual production, the block clearing difficulty is big, the stable smooth operation that influence is produced; Pellet is because the shape comparison rule, and generally it is gone into the stokehold and sieves under the blast furnace groove and can satisfy production requirement, but with the equally easy stifled sieve aperture of sintering deposit and then influence screening efficiency; For blast furnace screening difficulty maximum is the screening of lump ore, because its moisture was bigger after lump ore entered factory, it is higher to contain the powder rate, it is sticking dead to adopt existing screening plant to be easy to, stop up sieve aperture, screening efficiency is extremely low, cause a large amount of dust to bring blast furnace into, have a strong impact on the blast furnace permeability of stock column, its situation of factory for lump ore large percentage in the burden structure is more outstanding, indivedual factories not have under the situation of good method more lump ore employing method for washing, this can bring a large amount of moisture on the one hand into and enter direct motion and the coke ratio rising that the blast furnace influence is produced, in addition, the recycling difficulty of dust strengthens; Screening for coke is similar to lump ore, the coke overwhelming majority of domestic production adopts the method for water quenching, have only the big factory of minority to adopt the dry coke quenching method, the moisture of coke is bigger, and coke powder is attached on the coke button, is difficult for screening out, coke powder easily stops up sieve aperture during screening, broken Jiao can influence the gas permeability of " burnt window " at cohesive zone, entering cupola well influences ventilative, the liquid permeability of the dead burnt post of cupola well again, and it is disorderly that the original coal air-flow is distributed; There is sieve aperture, the low problem of screening efficiency stopped up equally in screening for materials such as agstone and quick limes.
Summary of the invention:
Technical barrier to be solved by this invention is exactly the problem that exists in the above material screening process, emphasis solves sieve sizing, the serious phenomenon of putty, raising is to the screening efficiency of material, the reduction blast furnace is gone into furnace charge and is contained the powder rate, and then reach the raising permeability of stock column, improve the coal gas distributions and improve gas utilization rate, promote the blast furnace stable smooth operation, finally realize the purpose of blast furnace " fine fodder " policy and iron increasing and coke saving.
The technical solution used in the present invention is:
Research and analyse by the screening characteristics to different material, because the characteristic of material is intrinsic can't changing itself, changeable can only be screening plant, and all there is its limitation in existing screening plant to the screening of different material.The present invention centers on the characteristic of material emphatically and takes a kind of brand-new mode of thinking, at first, on screening plant, carry out bold innovation, adopt the circle roller screen to substitute existing vibratory sieve, change material motion mode and running orbit in screening process by transformation to screening plant, for vibratory sieve, material presents the straight line impelling and moves ahead in screening process, static relatively nothing interacts between the material, material is difficult for spreading out on compass screen surface, in general the sieve effective area utilizes about about 60%, owing to moving ahead by the vibration impelling, disperses not open material simultaneously, cause top material not reach sieve plate and lose sieving actoion, and material motion mode in screening process is to roll when adopting the circle roller screen convertiblely, mutual fricting movement between slip and the material, so material can spread out in screening process fully; Secondly, for screening plant no matter be that vibratory sieve or round roller screen all can exist sizing, the putty phenomenon, the another innovation part of the present invention is to adopt elasticity brush real-time online cleaning sizing at sticking stifled phenomenon specially, putty, working method in conjunction with the elasticity brush is carried out reasonable Arrangement to the sieve-plate structure form, sieve plate adopts camber strip sieve plate, sieve seam and drum shaft are to vertical, the sieve aperture shape is near " V " type of falling, sieve nest is its sizing in rotation process, putty obtains " disclosing " of elasticity brush constantly, " dial " and stressed effects such as " scraping ", therefore, the sieve seam is difficult for by material glutinous dead, stop up, it is unimpeded that sieve aperture remains cleaning; In addition, material produces friction each other in the rolling screening process, the lip-deep glutinous material of material carries out self-clean each other by friction effect, just clean through the material after the screening of circle roller screen as washing, not only the dust in the material can well sifted, its lip-deep glutinous material is also removed completely, and this function of circle roller screen can't realize on other screening plant.
The present invention compares with traditional method, has the following advantage that has:
1, the present invention has fundamentally solved sizing, the putty phenomenon in the material screening process, especially when handling the screening of lump ore, coke, its effect is more remarkable than the conventional screen subset, and it can thoroughly overcome lump ore, coke because of containing sticking stifled this difficult problem of sieve aperture such as powder rate height and dust humidity.Simultaneously, it can realize material self-clean function in screening process, not only can screen out the dust in the material, even the lip-deep glutinous material of material is also removed completely.
2, the present invention can realize in the screening process sintering deposit, coke etc. being carried out modifier treatment.Owing to rubbing action mutually between the material, lip-deep " burrs " such as sintering deposit, cokes all obtains removing during screening, and after this equipment screening, sintering deposit tumbler index, wear-resistant index and coke M40, M10 index all will significantly improve.
3, the present invention fully spreads out to impel material by changing the motion mode and the running orbit of material in screening process, utilizes the real-time online cleaning effect of elasticity brush, and its screening efficiency significantly improves than legacy equipment; Simultaneously, effective sifting area is fully used, and its sieving capacity is greatly improved; Advantages such as in addition, this equipment has stable and reliable operation, life-span length, little power consumption, noise is low and easy to maintenance.
The specific embodiment:
Device structure of the present invention mainly constitutes (seeing Figure of description Fig. 1) by screen frame, sieve plate (6), elasticity brush (4), brush board (3), reductor (2), motor parts such as (1).Fig. 1 is a principle assumption diagram, and Fig. 2 is elasticity brush schematic diagram, and Fig. 3 is the sieve plate schematic diagram, and Fig. 4 is sieve tooth schematic diagram.Wherein, screen frame is made up of a plurality of rolling rings (7), crossbeam (5), and profile is cylinder or truncated conical shape, is fixed on the bearing block by an axle, utilize electrode, reductor to drive and be rotated, its rotating speed is determined according to calculation of parameter such as the filling rate of material, screening time, production capacity; The sieve plate (see figure 3) is shaped as circular arc, adopt the abrasion-resistant stee casting to form, be to form by many groups of sieve tooth (see figure 4) The parallel combined, the sieve odontoid is composited by circular arc and 2 parallel segments of 2 radius Rs near " V " type, and the sieve seam is strip circular arc and axially vertical with roller screen, shape is near " V " type of falling, its size from inside to outside increases gradually, so material is difficult for being stuck, and sieve plate is by being bolted on the crossbeam; Structure one end of elasticity brush is the spring shape, the other end is a rectilinear form, rectilinear end puts in to sieve to stitch and clears up during work, when elasticity, the deflection of elasticity brush all needs according to screening to material " disclose ", " dialling " and " scraping " stressed effect carries out accurate Calculation and determines, many elasticity brushes are fixed on the arc brush board regularly by bolt and pressure pad, basic each sieve seam that guarantees all has several elasticity brushes, brush board can move horizontally, when the elasticity brushing is decreased when serious, but horizontal adjusting brush board distance makes the recycling of elasticity brush.
Claims (7)
1. high-efficient sticking-blocking resistant wear-resistant round roller screen is characterized in that: adopt roller screening mode that material is sieved, screen frame is cylinder or truncated conical shape, and sieve plate is fixed on the screen frame, and the elasticity brush carries out the real-time online cleaning to sieve plate in screening process.
2. high-efficient sticking-blocking resistant wear-resistant round roller screen as claimed in claim 1 is characterized in that: the tapering of truncated conical shape screen frame is 0～20 °.
3. high-efficient sticking-blocking resistant wear-resistant round roller screen as claimed in claim 1, it is characterized in that: sieve plate is shaped as circular arc, adopts the abrasion-resistant stee casting to form, and the sieve seam is strip circular arc and axially vertical with roller screen.
4. as claim 1,3 described high-efficient sticking-blocking resistant wear-resistant round roller screen, it is characterized in that: sieve plate is to be formed by many groups of sieve tooth The parallel combined, and the sieve odontoid is near " V " type, is composited by circular arc and 2 parallel segments of 2 radius Rs.
5. high-efficient sticking-blocking resistant wear-resistant round roller screen as claimed in claim 1 is characterized in that: structure one end of elasticity brush is the spring shape, and the other end is a rectilinear form, and rectilinear end puts in to sieve to stitch and clears up during work.
6. as claim 1,5 described high-efficient sticking-blocking resistant wear-resistant round roller screen, it is characterized in that: many elasticity brushes are fixed on the brush board regularly by bolt and pressure pad, guarantee that substantially each sieve seam all has several elasticity brushes.
7. high-efficient sticking-blocking resistant wear-resistant round roller screen as claimed in claim 6 is characterized in that: brush board can move horizontally, and when the elasticity brushing is decreased when serious, but horizontal adjusting brush board distance makes the recycling of elasticity brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910064457A CN101837343A (en) | 2009-03-14 | 2009-03-14 | High-efficient sticking-blocking resistant wear-resistant round roller screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910064457A CN101837343A (en) | 2009-03-14 | 2009-03-14 | High-efficient sticking-blocking resistant wear-resistant round roller screen |
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| CN101837343A true CN101837343A (en) | 2010-09-22 |
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| CN200910064457A Pending CN101837343A (en) | 2009-03-14 | 2009-03-14 | High-efficient sticking-blocking resistant wear-resistant round roller screen |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081290A (en) * | 2017-06-12 | 2017-08-22 | 中冶南方工程技术有限公司 | For outside rotary drum filter screen from clearing apparatus |
| CN108636620A (en) * | 2018-05-31 | 2018-10-12 | 扬州市靖芸环保机械科技有限公司 | A kind of working method of horizontal coal fines fiber separator and its Celloco fractionator Celloco |
| CN108636785A (en) * | 2018-04-25 | 2018-10-12 | 胡爱国 | A kind of construction sand screening plant |
| CN110102462A (en) * | 2019-05-23 | 2019-08-09 | 河南科润德机械有限公司 | A kind of material exclusion device of Double-layer screen |
-
2009
- 2009-03-14 CN CN200910064457A patent/CN101837343A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081290A (en) * | 2017-06-12 | 2017-08-22 | 中冶南方工程技术有限公司 | For outside rotary drum filter screen from clearing apparatus |
| CN108636785A (en) * | 2018-04-25 | 2018-10-12 | 胡爱国 | A kind of construction sand screening plant |
| CN108636785B (en) * | 2018-04-25 | 2021-03-26 | 江苏振丰建设工程有限公司 | Sand sieving mechanism is used in construction |
| CN108636620A (en) * | 2018-05-31 | 2018-10-12 | 扬州市靖芸环保机械科技有限公司 | A kind of working method of horizontal coal fines fiber separator and its Celloco fractionator Celloco |
| CN108636620B (en) * | 2018-05-31 | 2023-06-06 | 扬州市靖芸环保机械科技有限公司 | Horizontal pulverized coal fiber separator and working method thereof |
| CN110102462A (en) * | 2019-05-23 | 2019-08-09 | 河南科润德机械有限公司 | A kind of material exclusion device of Double-layer screen |
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Application publication date: 20100922 |