CN202290541U - Parabola type roller screen and screen sheet thereof - Google Patents
Parabola type roller screen and screen sheet thereof Download PDFInfo
- Publication number
- CN202290541U CN202290541U CN2011204116193U CN201120411619U CN202290541U CN 202290541 U CN202290541 U CN 202290541U CN 2011204116193 U CN2011204116193 U CN 2011204116193U CN 201120411619 U CN201120411619 U CN 201120411619U CN 202290541 U CN202290541 U CN 202290541U
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- sieve
- sheet
- screen
- roller picker
- axle
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Abstract
The utility model discloses a parabola type roller screen and a screen sheet thereof. The screen sheet is provided with a plurality of protruding lugs which comprise first lateral walls and second lateral walls smoothly connected, sections of the first lateral walls for casting screen materials of the lugs are in parabolic shape, each second lateral wall is formed by connecting two curves in smooth mode, and grooves are formed between adjacent lugs. The utility model further discloses the roller screen with the screen sheet, and the parabolic-shaped design of the outer surface of the screen sheet can lead bulk materials to be cast to about the 45-degree direction to the largest extent so as to facilitate moving toward the upper portion of coal flows of the bulk materials and improve screening quality. Further, a screen shaft of the roller screen is arranged on a flexible base, and the phenomenon of blocking of the bulk materials can be avoided or removed.
Description
Technical field
The utility model belongs to the screening plant technical field, relates to coal-fired roller picker and the sieve sheet thereof of screening in the coal handling system of a kind of thermal power plant.
Background technology
Roller picker is the visual plant in the coal handling system of thermal power plant; Its effect is that the coarse coal screening that coal that the granularity that successively transports on the belt conveyor is qualified and granularity transfinite is left; Make the qualified coal of granularity get into milling equipment, the coarse coal that lets granularity transfinite is simultaneously pulverized by the compass screen surface entering coal breaker of roller picker.
The sieve sheet of traditional roller picker is for plum blossom shape sieve sheet 1, and is as shown in Figure 1, and its lump material in can impelling coal stream makes coal cinder or impurity to the motion of the top of coal stream, and the qualified coal of granularity is through the gap between the sieve sheet.Wherein, arrow is represented the direction of motion of coal cinder or impurity and sieve axle among the figure, and the irregularly shaped object that has shade is coal cinder or impurity, represents the loseed excircle that sieves axle with the broken circle of 3 marks, is used to explain the shape of sieve sheet with the broken circle of 4 marks.The design details of above-mentioned roller picker can be referring to Chinese patent CN101091950A.But in actual production, the coal cinder of coarsegrain or impurity can get between the sieve sheet and cause catching phenomenon.In case generation catching phenomenon, system can trip with the screen coal drive unit of machine of protection, have a strong impact on the efficient of screening coal like this.
Thereby, necessary existing roller picker structure is improved.
The utility model content
The problem that the utility model will solve is to reduce the generation of roller picker catching phenomenon in screening material process, and another problem that the utility model will solve is to remove the foreign material that adhere on the sieve sheet in the roller picker course of work.
For addressing the above problem, the utility model provides a kind of sieve sheet:
Said sieve sheet is provided with a plurality of lugs that outwards protrude out; Form groove between the adjacent lug; Said lug comprises the first side wall, second sidewall, and the first side wall cross section that is used for impelling screening material is parabolic shape, said the first side wall and said smooth connection of second sidewall.
Optional, the said second sidewall cross section is level and smooth curve-like.
Optional, said second sidewall is two smooth being formed by connecting of curved surface.
For addressing the above problem, the utility model also provides a kind of roller picker, comprises that some that each interval is arranged sieve axle, are fixed on the aforesaid sieve sheet on the said sieve axle.
Optional, the two ends of said sieve axle are installed on the bearing block, and said bearing block is fixedly connected on the flexible base.
Optional, said flexible base comprises upper plate, lower shoe, the groups of springs between said upper plate and lower shoe or rubber polyester layer.
Optional, said sieve axle directly is connected with hollow shaft decelerator.
Optional, said roller picker comprises scraper cleaner in addition, and said scraper cleaner is located between same adjacent two said sieve sheets on the sieve axle, said scraper cleaner tilt to be placed on said sieve axle near.
Optional, said scraper cleaner be provided with triangular edges with an end said sieve rays close.
Optional, said roller picker comprises the bypass turnover panel in addition, said bypass turnover panel movable end be shaped as the comb shape that is suitable for sieving material.
Compared with prior art, the utlity model has following advantage:
One, roller picker sieve sheet is Parabolic sidewall and can material be thrown to 45 degree left and right directions to greatest extent; Help lump material to the motion of the top of coal stream; Lump material can be to the forward direction motion of coal stream under the effect of rotary screen sheet like this; And finally get into coal breaker, improved screening quality.In addition, the working face of sieve sheet is Paint Gloss, when lump material falls into the gaps between last adjacent two the sieve sheets of difference sieve axle, and the coal handling plant below lump material under the turning effort of self gravitation and sieve sheet passes this gap entering sieve sheet more easily.Moreover, smooth parabolic type working face is removed the soft impurities that hangs on the sieve sheet more easily by coal stream, and makes the rotational resistance of sieve sheet littler.
Two, the bearing block of roller picker is installed on the flexible base, and an end of sieve axle directly is connected with hollow shaft decelerator, can remove the catching phenomenon of lump material.When lump material is clamped between two adjacent sieve sheets on difference sieve axle; Under the effect of rotary screen sheet, lump material can all apply the effect of power to the sieve sheet that is in contact with it, and the effect of this power can pass to the sieve axle at sieve sheet place; Because flexible base has elasticity; Flexible base can move along opposite direction under the effect of this power, moves in opposite direction thereby drive two adjacent sieve axles, when the position between two sieve axles changes; Two contact points between lump material and the sieve sheet, the central point of two sieve axles no longer are arranged in same triangular structure, have removed catching phenomenon.And because sieve axle directly is connected with hollow shaft decelerator, it has bigger axial dipole field compensate function, and decelerator still can drive to sieve and spool it worked on like this.
Three, the material of roller picker sieve sheet is a high-strength abrasion-proof steel; ZG40Mn2 compares with traditional material; It has better rigidity, toughness, wearability, machinability, and is thinner at the thickness that satisfies the sieve sheet that forms with this material under the situation of requirement of strength, has increased the effective sifting area of compass screen surface; Increase screening rate, thereby can reduce the quantity of sieve axle.
Four, the scraper cleaner of roller picker tilt to be placed, and its end near the sieve axle is provided with triangular edges, so more can effectively remove the soft impurities that is wrapped on the sieve spool.
Five, the movable end of the bypass turnover panel of roller picker is shaped as comb shape, when guaranteeing to realize bypass functionality, can make partial material through the bypass turnover panel time, obtain screening like this, has reduced the screening workload of sieve sheet, has improved screening efficiency.
Description of drawings
Fig. 1 is the screening course of work sketch map with traditional roller picker of plum blossom shape sieve sheet.
Fig. 2 is the sketch map that lump material causes catching phenomenon among the roller picker embodiment that provides of the utility model between the sieve sheet.
Fig. 3 is a flexible base sketch map among the roller picker embodiment that provides of the utility model.
The specific embodiment
The inventor finds; There is the many places wedge angle in traditional plum blossom shape sieve plate shape; And its impelling angle to material is little, and lump material is got back to again in two gaps between the adjacent sieve sheet very soon under the effect of gravity and the rotation of sieve sheet, causes the phenomenon of lump material clamping stagnation easily.
To this; The inventor proposes a kind of part at least and sieves working face and be Parabolic sieve sheet; This parabolic shaped structure can make the material that is positioned on it thrown to 45 degree left and right directions to greatest extent, helps lump material to the motion of the top of coal stream, and lump material can be to the forward direction motion of coal stream under the effect of rotary screen sheet like this; And finally get into coal breaker, improved screening quality.In addition, the working face of sieve sheet is Paint Gloss, when lump material falls into the gaps between last adjacent two the sieve sheets of difference sieve axle, and the coal handling plant below lump material under the turning effort of self gravitation and sieve sheet passes this gap entering sieve sheet more easily.
For preventing or eliminate contingent catching phenomenon, the inventor further will sieve axle and be installed on the flexible base.When lump material is clamped between two adjacent sieve sheets on difference sieve axle; Under the effect of rotary screen sheet, lump material can all apply the effect of power to the sieve sheet that is in contact with it, and the effect of this power can pass to two adjacent sieve axles; Because flexible base has elasticity; Flexible base can move along opposite direction under the effect of this power, moves along opposite direction thereby drive two sieve axles, when the position of two sieve axles changes; Two contact points between lump material and the sieve sheet, the central point of two sieve axles no longer are arranged in same triangular structure, have removed catching phenomenon.
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
What need explanation is; Mark 21 representatives and the circumscribed broken circle of sieve sheet in the accompanying drawing; Mark 22 representatives and the broken circle that sieves the sheet inscribe; The center line of the adjacent two sieve axles of mark 24 representatives; Mark 21,22,24 all is used to illustrate the shape of sieve sheet; The invisible excircle of mark 23 representative sieve axles is used to illustrate the position relation between scraper cleaner and the sieve axle.
Roller picker comprises several sieve axles that are arranged in parallel; As shown in Figure 2, the direction of rotation (arrow direction among the figure) of sieve axle 11 is identical, and its direction of rotation is consistent with the direction of advance (arrow direction among the figure) of screening material; The type of drive of sieve axle 11 is that unit drives, so that maintenance.Concrete, the arrangement mode of sieve axle both can be the parallel arrangement mode of level, promptly the center line of all sieve axles is positioned at sustained height; Also can be the parallel arrangement mode that tilts, i.e. the height of the center line of all sieve axles increasing or decreasing gradually.
Roller picker comprises in addition by preset spacing and is evenly distributed on the sieve sheet 12 on the sieve axle 11; Concrete, as shown in Figure 2, the sieve sheet is provided with a plurality of lugs that protrude out 13; Form groove between the adjacent lug 13; Lug 13 comprises the first side wall, second sidewall of smooth connection, and the first side wall cross section that is used for impelling screening material of lug is parabolic shape, and second sidewall is two smooth being formed by connecting of curved surface.The end of lug 13 and broken circle 21 are tangent, and the groove and the broken circle 22 that form between the adjacent lug 13 are tangent.
When 11 rotations of sieve axle; The and then rotation together of sieve sheet 12 on the sieve axle 11; When material sieves on said roller picker; Material less than sieve aperture can fall along sieve aperture under the effect of self gravitation and sieve axle revolving force, moves to the direction that coal stream advances greater than material continuation under the impelling effect of sieve sheet of sieve aperture, until coal breaker.Owing to sieve the parabolic type that is shaped as of sheet 12; Its working face is Paint Gloss; When lump material 14 falls on the different sieve axles 11 gaps between adjacent two sieve sheets 12; Coal handling plant below lump material 14 under the turning effort of self gravitation and sieve sheet passes this gap entering sieve sheet more easily, thereby the generation of minimizing catching phenomenon.Material on lug 13 the first side walls is thrown to the direction (arrow direction among the figure) about 45 degree to greatest extent, helps lump material 14 to the motion of the top of coal stream, improves screening quality.In addition, its working face is more level and smooth, and the soft impurities that when the rotation of sieve sheet, hangs on the sieve sheet is removed by coal stream more easily, and the rotational resistance of sieve sheet is littler.
Further; The material of sieve sheet 12 is a high-strength abrasion-proof steel, and ZG40Mn2 compares with traditional material, and it has better rigidity, toughness, wearability, machinability; Thickness satisfying the sieve sheet that forms with this material under the situation of requirement of strength is thinner; Increase the effective sifting area of compass screen surface, increased screening rate, thereby can reduce the quantity of sieve axle.Concrete, sieve sheet 12 interleaved on adjacent two sieve axles 11 are arranged.
As shown in Figure 2, when lump material 14 was clamped between two adjacent sieve sheets 12 on difference sieve axle 11, its working face with sieve sheet 12 formed two contact point O
3, O
4, as two contact point O
3, O
4Central point O with adjacent two sieve axles 11
1, O
2When constituting a quadrangle, tool is stable owing to quadrangle, and under the effect of sieve sheet revolving force, lump material 14 can pass from the gaps between adjacent two sieve sheets 12, is not easy to produce catching phenomenon.When this quadrangle changes triangle into, promptly connect this two contact point O
3, O
4Central point O with two sieve axles 11
1, O
2Constitute a firm triangle, this moment, lump material 14 was difficult to pass from the gaps between adjacent two sieve sheets 12, was easy to generate catching phenomenon.
In order to remove catching phenomenon, need break this triangular structure, this can (be O through the distance that changes between adjacent two sieve axles 11
1, O
2Between distance) realize, in conjunction with shown in Figure 3, because the bearing block 15 of roller picker (local signal) is installed on the flexible base 16; Under the effect of rotary screen sheet 12, lump material 14 can all apply the effect of power to the sieve sheet 12 that is in contact with it, and the effect of this power can pass to two adjacent sieve axles 11; Pass to bearing block 15 again, because flexible base 16 has elasticity, and flexible base 16 is connected with bearing block 15; Flexible base 16 can move under the effect of this power; Move along opposite directions thereby drive two sieve axles 11, when the position of two sieve axles 11 changes, i.e. O
1, O
2Between distance change lump material 14 and the contact point O of sieve between the sheet 12
3, O
4, two pieces sieve axles central point O
1, O
2No longer be arranged in same triangular structure, removed catching phenomenon.And because sieve axle 11 directly is connected with hollow shaft decelerator (not shown); When sieve axle 11 moves; Hollow shaft decelerator has bigger axial dipole field compensate function, and decelerator still can work on it through shaft coupling or the direct sieve axle 11 that drives like this.
Concrete, flexible base comprises upper plate 17, lower shoe 18, the groups of springs between upper plate 17 and lower shoe 18 or rubber polyester layer 19, is connected through the bolt (not shown) between flexible base 16 and the bearing block 15.The rubber polyester layer is a kind of engineering plastics commonly used, and it has elasticity, and under the effect of power, it can compress or extend, and then changes the position of bearing block 15.The number of springs that comprises in the said groups of springs can according to the design feature of roller picker with adjust with guarantee flexible base 16 can support screen axle 11, parts such as bearing block 15, the number of springs in the groups of springs also can be according to the stiffness factor of employing spring with adjusting in addition.
As shown in Figure 1, the scraper cleaner 2 of the plum blossom shape roller picker in the background technology is vertical with the sieve axle.As shown in Figure 2; Roller picker in the utility model comprises scraper cleaner 20 in addition, and the one of which end is provided with triangular edges, and an end that has a blade is near sieve axle 11; And scraper cleaner 20 tilts to place on the ground, so more can effectively remove the soft impurities that is wrapped on the sieve axle 11.In force, the material of scraper cleaner 20 can be the 65Mn spring steel, makes it to have wearability preferably.
Roller picker comprises bypass turnover panel (not shown) in addition; It is arranged on the feeding end of screen(ing) machine; The movable end of bypass turnover panel is shaped as comb shape; Guarantee to realize that bypass functionality is a system when breaking down in the interim discharging, can make the less material of granularity through the bypass turnover panel time, obtain screening like this.Therefore, coal stream both can sieve from compass screen surface, also can be from the screening of bypass turnover panel, and such structure has reduced the screening workload of sieve sheet, has improved screening efficiency.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. one kind is sieved sheet; It is characterized in that; Said sieve sheet is provided with a plurality of lugs that protrude out, and forms groove between the adjacent lug, and said lug comprises the first side wall, second sidewall; The first side wall cross section that is used for impelling screening material is parabolic shape, said the first side wall and said smooth connection of second sidewall.
2. sieve sheet according to claim 1 is characterized in that, the said second sidewall cross section is level and smooth curve-like.
3. sieve sheet according to claim 2 is characterized in that, said second sidewall is two smooth being formed by connecting of curved surface.
4. a roller picker is characterized in that, comprise some sieve axles that each interval arranges, be fixed on the said sieve axle like each described sieve sheet of claim 1 to 3.
5. roller picker according to claim 4 is characterized in that, the two ends of said sieve axle are installed on the bearing block, and said bearing block is fixedly connected on the flexible base.
6. roller picker according to claim 5 is characterized in that, said flexible base comprises upper plate, lower shoe, the groups of springs between said upper plate and lower shoe or rubber polyester layer.
7. roller picker according to claim 5 is characterized in that, said sieve axle directly is connected with hollow shaft decelerator.
8. roller picker according to claim 4 is characterized in that other comprises scraper cleaner, and said scraper cleaner is located between adjacent two the said sieve sheets on the same sieve axle, said scraper cleaner tilt to be placed on said sieve axle near.
9. roller picker according to claim 8 is characterized in that, the end near said sieve axle of said scraper cleaner is provided with triangular edges.
10. roller picker according to claim 4 is characterized in that other comprises the bypass turnover panel, said bypass turnover panel movable end be shaped as the comb shape that is suitable for sieving material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204116193U CN202290541U (en) | 2011-10-25 | 2011-10-25 | Parabola type roller screen and screen sheet thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204116193U CN202290541U (en) | 2011-10-25 | 2011-10-25 | Parabola type roller screen and screen sheet thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202290541U true CN202290541U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204116193U Expired - Lifetime CN202290541U (en) | 2011-10-25 | 2011-10-25 | Parabola type roller screen and screen sheet thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202290541U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794268A (en) * | 2012-07-18 | 2012-11-28 | 钱尧翎 | Rolling shaft type screening machine |
| CN103848233A (en) * | 2013-10-14 | 2014-06-11 | 洛阳广盈机械设备有限公司 | Large block removing device for bucket wheel machine |
| CN104259094A (en) * | 2014-10-23 | 2015-01-07 | 石家庄功倍重型机械有限公司 | Screen capable of preventing materials from blocking during material processing and self-cleaning method thereof |
| CN104492683A (en) * | 2014-12-25 | 2015-04-08 | 四川皇龙智能破碎技术股份有限公司 | Novel pectinate cleaning device for roller screen |
| CN104903011A (en) * | 2013-01-10 | 2015-09-09 | 冈瑟控股有限公司 | Sorting element for a sorting device |
| CN105057193A (en) * | 2015-07-17 | 2015-11-18 | 洛阳华晨重工机械有限公司 | Eccentric boost type roll screen |
| CN109078963A (en) * | 2018-09-05 | 2018-12-25 | 浙江大学苏州工业技术研究院 | A kind of city machine sweeps away rubbish separation and minimizing processing method and processing device |
| CN110573266A (en) * | 2017-05-04 | 2019-12-13 | 多普斯塔德特家族控股有限公司 | Device for classifying material to be classified |
| CN111545444A (en) * | 2020-05-18 | 2020-08-18 | 梧州清新建筑废弃物再生技术有限公司 | A dish sieve for building decoration rubbish screening |
| CN115770721A (en) * | 2022-11-01 | 2023-03-10 | 河北邯峰发电有限责任公司 | Parabola type anti-blocking roller screen device |
-
2011
- 2011-10-25 CN CN2011204116193U patent/CN202290541U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794268A (en) * | 2012-07-18 | 2012-11-28 | 钱尧翎 | Rolling shaft type screening machine |
| CN104903011A (en) * | 2013-01-10 | 2015-09-09 | 冈瑟控股有限公司 | Sorting element for a sorting device |
| US9895719B2 (en) | 2013-01-10 | 2018-02-20 | Günther Holding GmbH & Co. KG | Sorting element for a sorting device |
| CN103848233A (en) * | 2013-10-14 | 2014-06-11 | 洛阳广盈机械设备有限公司 | Large block removing device for bucket wheel machine |
| CN104259094A (en) * | 2014-10-23 | 2015-01-07 | 石家庄功倍重型机械有限公司 | Screen capable of preventing materials from blocking during material processing and self-cleaning method thereof |
| CN104492683A (en) * | 2014-12-25 | 2015-04-08 | 四川皇龙智能破碎技术股份有限公司 | Novel pectinate cleaning device for roller screen |
| CN105057193A (en) * | 2015-07-17 | 2015-11-18 | 洛阳华晨重工机械有限公司 | Eccentric boost type roll screen |
| CN110573266A (en) * | 2017-05-04 | 2019-12-13 | 多普斯塔德特家族控股有限公司 | Device for classifying material to be classified |
| CN109078963A (en) * | 2018-09-05 | 2018-12-25 | 浙江大学苏州工业技术研究院 | A kind of city machine sweeps away rubbish separation and minimizing processing method and processing device |
| CN111545444A (en) * | 2020-05-18 | 2020-08-18 | 梧州清新建筑废弃物再生技术有限公司 | A dish sieve for building decoration rubbish screening |
| CN115770721A (en) * | 2022-11-01 | 2023-03-10 | 河北邯峰发电有限责任公司 | Parabola type anti-blocking roller screen device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |