CN101138760A - Discrete carpolite grading plant - Google Patents
Discrete carpolite grading plant Download PDFInfo
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- CN101138760A CN101138760A CNA2007100198154A CN200710019815A CN101138760A CN 101138760 A CN101138760 A CN 101138760A CN A2007100198154 A CNA2007100198154 A CN A2007100198154A CN 200710019815 A CN200710019815 A CN 200710019815A CN 101138760 A CN101138760 A CN 101138760A
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- sieve
- carpolite
- discrete
- grading plant
- screen cloth
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Abstract
The present invention discloses a discrete carpolite grading device, which comprises a vibrating motor, which drives a sieve box frame and a plurality of layers of sieves to vibrate to and fro. The vibrating motor is a vibration source. Sieve plates of the sieves are curve structures. Sieve pores in the sieve plates are inverted cone structures. The present invention designs a multi-sieve surface vibrating sieve and the sieve pores are invert cone structures. Moreover, a cone protrudes at the feeding end of each sieve pore, so materials do not jam the sieve pores when the carpolites are graded with the vibrating sieve. As the sieve plates are cure structures, materials sieved and separated do not accumulate together. The present invention is provided with the function of carpolite dispersion so as to promote the sieving efficiency by about 30 to 50 percent, compared with an ordinary vibrating sieve. Meanwhile, the dispersion function reduces abrasion of the sieve plates by the carpolites and prolongs the usable life of the sieve plates. The replacement times of sieves are reduced by 50 percent compared with an ordinary sieving device. The use frequency of the vibrating motor is 0.9 t0 1.1 times of an inherent frequency of the sieves, and the motor is provided with the function of sieve pore jamming prevention.
Description
Technical field
The present invention relates to a kind of stone screening grading plant, be in particular the hot aggregate gradation processing of a kind of pitch mixing mixing plant sieve classification device.
Background technology
The asphalt mixing plant operation principle is: cold aggregate (being the stone of different size), be admitted to drying by the frequency control belt, behind the hot blast heat drying, be transported to high building, a screening system is arranged above high building, the stone that heated will pass through sieve classification here, be loaded into each hot aggregate storage bin respectively, require the hot aggregate of different size is mixed with a certain proportion of pitch through metering in proportion according to the asphalt prescription then, obtain asphalt at last.
In original asphalt mixing plant, and the sieve classification device of use (Li Shikun. The Development of Asphalt Mixing Plant in China. road building machine and mechanization of building operation .2003.06; Chen Qizong. the development of external asphalt concrete regenerating mixing plant. engineering machinery and maintenance .2000.10) be the vibratory sieve of common plane sieve plate, multi-deck screen web frame.The sieve plate of vibratory sieve is made by steel wire, sieve aperture be shaped as rectangle, this sieve aperture stops up easily; The driving frequency of vibratory sieve and the intrinsic frequency of screen cloth do not adopt frequency match, so there is not anticlogging function; Because sieve plate not discrete effect in plane so screening efficiency is low, produce the wearing and tearing aggravation of stone to screen cloth thus, thereby the screening plant life-span is low; And the loading characteristic of common plane sieve-plate structure is bad, problems such as structure is not firm so screening plant exists, maintenance cost height.
Summary of the invention
The object of the present invention is to provide a kind of discrete carpolite grading plant that the hot aggregate gradation of pitch mixing mixing plant is handled that is used for, it is low that this apparatus structure intensity height, material are difficult for obstruction, long service life, production efficiency height, maintenance cost.
The technical solution that realizes the object of the invention is: a kind of discrete carpolite grading plant, comprise and drive the vibrating motor that screen box frame and multilayer screen cloth are made double vibrations, this vibrating motor is a vibration source, and the sieve plate of described multilayer screen cloth is a curved configuration, and the sieve aperture on this sieve plate is the inverted cone structure.
The sieve aperture feed end of discrete carpolite grading plant of the present invention on sieve plate is provided with conical projection.
The coning angle of the inverted cone structure of discrete carpolite grading plant of the present invention is 10～60 degree.
The radius of curvature of the curved configuration of the sieve plate of discrete carpolite grading plant of the present invention is 3000～1000mm.
Spacing between the sieve aperture on the sieve plate of discrete carpolite grading plant of the present invention is 2～2.5 times of sieve diameter.
The leading portion of the multilayer screen cloth of discrete carpolite grading plant of the present invention is the layout of isopachous sieving, and promptly the compass screen surface at feeding mouth place divides two sections, and first section screen angle is 30～40 degree, and second section screen angle is 12～25 degree; The back segment of multilayer screen cloth is the layout of probability screen point-score, i.e. the big sieve aperture high inclination-angle at discharging opening place, little sieve aperture small inclination.
The frequency of the vibrating motor of discrete carpolite grading plant of the present invention is consistent with the intrinsic frequency of sieve plate, and the frequency of this vibrating motor is 0.9～1.1 times of multilayer screen cloth intrinsic frequency.
The material of the sieve plate of discrete carpolite grading plant of the present invention is a carbon fibre composite.
The present invention compared with prior art, its remarkable advantage: (1) has designed the vibratory sieve of multilayer compass screen surface, and sieve aperture is the inverted cone structure, and at the feed end of each sieve aperture a conical projections is arranged, can make vibratory sieve like this when the classification stone, material can not stop up sieve aperture; (2) owing to adopted the shaped form sieve-plate structure, the material that is sized can be deposited in together, the function of discrete carpolite is arranged, thereby improve screening efficiency, screening efficiency improves about 30-50% than the screening efficiency of general vibratory sieve.Simultaneously, debunching action has reduced the wearing and tearing of stone to sieve plate, in the service life of having improved sieve plate, makes screen cloth change the more common screening plant of number of times and reduces 50%; (3) owing to adopted the shaped form sieve-plate structure, the structure stress of vibratory sieve is more reasonable, and the function of structure absorbing is arranged when vibration, and the vibration that vibratory sieve is delivered on the frame reduces, improve the service life of screening plant, improved the high building dynamic characteristic of asphalt mixing plant; (4) frequency of utilization of shock electric machine be multilayer screen cloth intrinsic frequency 0.9-1.1 doubly, the function of anti-sieve pore blockade is arranged.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of discrete carpolite grading plant of the present invention.
Fig. 2 is the multi-deck screen network arrangements structural representation of discrete carpolite grading plant of the present invention.
Fig. 3 is the sieve aperture structural representation of discrete carpolite grading plant of the present invention.
The specific embodiment
In conjunction with Fig. 1, Fig. 2 and Fig. 3, discrete carpolite grading plant of the present invention is made up of screen box frame 1, excited vibration motor 2, multilayer screen cloth 3, charging aperture 4 and discharging opening 5 five parts.Multilayer screen cloth 3 is fixed by the wall-panels supports on screen box frame 1 both sides, between connect with bolt; Vibrating motor 2 places above the screen box frame 1, and is connected with bolt between the screen box frame 1; Charging aperture 4 is above screen box frame 1, and the wallboard bind mode on charging aperture 4 two ends and screen box frame 1 both sides is welding; Discharging opening 5 can have 6, is separately positioned on the feed opening below of every layer of screen cloth, and the wallboard on two ends and screen box frame 1 both sides is with being welded to connect.Screen cloth 3 utilizes the special clamping plate in screen frame both sides from horizontal tension, with bolt support brace is fixed on the screen box frame 2 then.The curved configuration of multilayer screen cloth 3 is provided by the fixed support on screen cloth both sides.Above-mentioned vibrating motor 2 is a vibration source, and this vibrating motor 2 drives screen box frame 1 and multilayer screen cloth 3 is made double vibrations, and the sieve plate 6 of multilayer screen cloth 3 is a curved configuration, and the radius of curvature of this shaped form sieve plate 6 is 3000～1000mm.Sieve aperture 7 on this sieve plate 6 is the inverted cone structure, and the coning angle of this inverted cone structure is 10～60 degree.Sieve aperture 7 feed ends on sieve plate 6 promptly are provided with a conical projection 8 above the material movement direction of each sieve aperture.Spacing between the sieve aperture on the sieve plate 6 is 2～2.5 times of sieve diameter.Wherein, the leading portion of multilayer screen cloth 3 is the layout of isopachous sieving, and promptly the compass screen surface at feeding mouth 4 places divides two sections, and first section screen angle is 30～40 degree, and second section screen angle is 12～25 degree; The back segment of multilayer screen cloth 3 is the layout of probability screen point-score, i.e. the big sieve aperture high inclination-angle at discharging opening 5 places, little sieve aperture small inclination.The sieve aperture of multilayer screen cloth 3 can be arranged to 3 * 3,6 * 6,11 * 11,19 * 19,30 * 30, and their meaning is that sieve aperture adopts that square profile, pitch of holes are respectively 3,6,11,19,30mm.Specifically being arranged as of multilayer screen cloth 3: the sieve aperture specification of ground floor from the charging aperture to the discharging opening is 30 * 30,19 * 19,11 * 11; The sieve aperture specification of the second layer from the charging aperture to the discharging opening is 19 * 19,11 * 11,11 * 11; The 3rd layer of sieve aperture specification is 6 * 6; The 4th layer of sieve aperture specification from the charging aperture to the discharging opening is 11 * 11,6 * 6; The sieve aperture specification of layer 5 from the charging aperture to the discharging opening is 6 * 6,3 * 3; The sieve aperture specification of layer 6 from the charging aperture to the discharging opening is 3 * 3,3 * 3.
Stone is entered by the charging aperture on the screen box frame 14, arrive the screening with constant bed thickness section screen cloth of ground floor compass screen surface earlier, through the secondary screening, enter probability screen segmentation screen cloth, material is through after sieving, and oversize enters feed bin by discharging opening 5, and screenings passes through the screening of following which floor screen cloth again, enter separately feed bin from discharging opening 5 respectively, thereby make stone be divided into six different grades.As shown in Figure 3, sieve aperture 7 adopts the inverted cone structures, adds a conical projection above the material movement direction of sieve aperture 7, like this, made things convenient for the downslide of material during the screening material, reduced the probability of sieve pore blockade greatly, can structurally play anti-sieve aperture 7 and stop up purpose.Simultaneously, the frequency of shock electric machine 2 is suitable with the intrinsic frequency of sieve plate 6, the 0.9-1.1 that specifically gets multilayer screen cloth 3 intrinsic frequencies doubly, like this after stopping up sieve aperture with the much the same material particles of slot size, the new system that formation is made up of material particles, sieve, gripper shoe, because the excited frequency of shock electric machine equals the intrinsic frequency of (material of sieve, an obstruction sieve aperture material, gripper shoe constitute) system vibration substantially, can produce resonance when sieve is blocked, destroys stifled formation of sieving.When wanting to make sieve aperture blocked resonance effect is preferably arranged, suppose the intrinsic frequency ω=(k/m) when sieve does not stop up
1/2The quality of stopping up the material particles in sieve hole is Δ m, the intrinsic frequency ω ' after sieve is blocked=[k/ (m+ Δ m)
1/2The intrinsic frequency value of system should be concentrated as far as possible when part was stopped up and stopped up fully, strengthened blocking-proof result.Therefore, if will satisfy above-mentioned 2 points simultaneously, will make Δ m＞m, take following measure for this reason: adopts lighter material as screen cloth and screen frame to reduce m, the area that increases sieve is with increase Δ m.Therefore, screen cloth has used carbon fibre composite among the present invention, greatly reduces its quality, uses shaped form multi-deck screen web frame simultaneously, make screen area be the screening projected area 1.2-1.5 doubly.
Under all fixed situations such as sieving area, vibration performance parameter and raw meal particle size composition of vibratory sieve, the selection of vibratory sieve sieve aperture structure is bigger to the treating capacity and the screening efficiency influence of vibratory sieve.According to screen experiments, to the multistage classification of multilayer screen cloth, the spacing between the adjacent sieve aperture is general near certain proportionate relationship, and the spacing between the sieve aperture of the present invention is a 2-2.5 sieve diameter doubly.
The present invention has taken all factors into consideration the characteristics of isopachous sieving and probability screen point-score, adopts the layout of isopachous sieving at charging aperture 4.Layout can make material bed acceleration strengthen like this, and the rapid attenuation of the bed of material, and layering have soon improved the speed of aggregate inlet, thereby has promoted the disposal ability of whole screen(ing) machine; In 5 layouts that adopt the probability screen point-score of discharging opening, material can sieve rapidly after going into sieve thoroughly, has overcome the shortcoming of stopping up sieve aperture in the common sieve method easily simultaneously, has eliminated the influence of critical particle, has reduced the wearing and tearing of compass screen surface, has improved the treating capacity of unit are; Owing to adopt the multilayer compass screen surface, can tell several other products of level simultaneously, make the screening efficiency raising 30-50% of the screening efficiency of this device than general vibratory sieve.
Claims (8)
1. discrete carpolite grading plant, comprise and drive the vibrating motor [2] that screen box frame [1] and multilayer screen cloth [3] are made double vibrations, this vibrating motor [2] is a vibration source, it is characterized in that: the sieve plate [6] of multilayer screen cloth [3] is a curved configuration, and the sieve aperture [7] on this sieve plate [6] is the inverted cone structure.
2. discrete carpolite grading plant according to claim 1 is characterized in that: sieve aperture [7] feed end on sieve plate [6] is provided with conical projection [8].
3. discrete carpolite grading plant according to claim 1 is characterized in that: the coning angle of inverted cone structure is 10～60 degree.
4. discrete carpolite grading plant according to claim 1 is characterized in that: the radius of curvature of the curved configuration of sieve plate [6] is 3000～1000mm.
5. discrete carpolite grading plant according to claim 1 is characterized in that: the spacing between the sieve aperture on the sieve plate [6] is 2～2.5 times of sieve diameter.
6. discrete carpolite grading plant according to claim 1, it is characterized in that: the leading portion of multilayer screen cloth [3] is the layout of isopachous sieving, be that the compass screen surface that feeding mouth [4] is located divides two sections, first section screen angle is 30～40 degree, and second section screen angle is 12～25 degree; The back segment of multilayer screen cloth [3] is the layout of probability screen point-score, i.e. the big sieve aperture high inclination-angle located of discharging opening [5], little sieve aperture small inclination.
7. discrete carpolite grading plant according to claim 1 is characterized in that: the frequency of vibrating motor [2] is consistent with the intrinsic frequency of sieve plate [6], and the frequency of this vibrating motor [2] is 0.9～1.1 times of multilayer screen cloth [3] intrinsic frequency.
8. discrete carpolite grading plant according to claim 1 is characterized in that: the material of sieve plate [6] is a carbon fibre composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100198154A CN100455363C (en) | 2007-01-30 | 2007-01-30 | Discrete carpolite grading plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100198154A CN100455363C (en) | 2007-01-30 | 2007-01-30 | Discrete carpolite grading plant |
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| CN101138760A true CN101138760A (en) | 2008-03-12 |
| CN100455363C CN100455363C (en) | 2009-01-28 |
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| CNB2007100198154A Expired - Fee Related CN100455363C (en) | 2007-01-30 | 2007-01-30 | Discrete carpolite grading plant |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767090A (en) * | 2008-12-31 | 2010-07-07 | 大连隆正光饰机制造有限公司 | Flat screen |
| WO2013060123A1 (en) * | 2011-10-24 | 2013-05-02 | 湖南三一智能控制设备有限公司 | Screen component and vibrating screen for asphalt stirring equipment |
| CN107838025A (en) * | 2016-09-20 | 2018-03-27 | 嘉义钢铁股份有限公司 | Screen cloth |
| CN108435342A (en) * | 2018-03-29 | 2018-08-24 | 广东鼎科技有限公司 | Anti- mill continuous ball mill and a kind of sieve plate of rising |
| CN110394298A (en) * | 2019-06-22 | 2019-11-01 | 中建河图建设有限公司 | A kind of architectural engineering sandstone screening plant |
| CN112845031A (en) * | 2019-11-12 | 2021-05-28 | 南昌矿山机械有限公司 | Hydraulic high-frequency screen |
| CN113788594A (en) * | 2021-10-19 | 2021-12-14 | 兴源环境科技股份有限公司 | Dirty dry-wet separator of excrement for livestock-raising |
| CN115739616A (en) * | 2022-11-18 | 2023-03-07 | 唐山陆凯科技有限公司 | Vibration screening treatment device for coal dressing |
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| US4319992A (en) * | 1980-10-28 | 1982-03-16 | Midwestern Industries, Inc. | Material separating machine |
| CN85108313A (en) * | 1985-11-07 | 1987-08-26 | 中国矿业学院 | The coal method for sieving of probability of classification screen |
| CN2095715U (en) * | 1991-01-20 | 1992-02-12 | 中国矿业大学 | String type arc probability screen |
| CN2088904U (en) * | 1991-05-28 | 1991-11-20 | 汪景岐 | High efficient sieve-plate for cylinder sieve |
| CN2468610Y (en) * | 2001-03-14 | 2002-01-02 | 王延益 | Equal thinkness probability fish scale sieve |
| CN2736071Y (en) * | 2004-06-14 | 2005-10-26 | 陈恒 | Screen mat for feed grinder |
| CN2754745Y (en) * | 2004-11-26 | 2006-02-01 | 上海人造板机器厂有限公司 | Mesh structure of detwatering spiral screen mesh for chip water scrubber |
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2007
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767090A (en) * | 2008-12-31 | 2010-07-07 | 大连隆正光饰机制造有限公司 | Flat screen |
| WO2013060123A1 (en) * | 2011-10-24 | 2013-05-02 | 湖南三一智能控制设备有限公司 | Screen component and vibrating screen for asphalt stirring equipment |
| CN107838025A (en) * | 2016-09-20 | 2018-03-27 | 嘉义钢铁股份有限公司 | Screen cloth |
| CN108435342A (en) * | 2018-03-29 | 2018-08-24 | 广东鼎科技有限公司 | Anti- mill continuous ball mill and a kind of sieve plate of rising |
| CN110394298A (en) * | 2019-06-22 | 2019-11-01 | 中建河图建设有限公司 | A kind of architectural engineering sandstone screening plant |
| CN110394298B (en) * | 2019-06-22 | 2023-09-12 | 中建河图建设有限公司 | Sand and stone screening device for constructional engineering |
| CN112845031A (en) * | 2019-11-12 | 2021-05-28 | 南昌矿山机械有限公司 | Hydraulic high-frequency screen |
| CN113788594A (en) * | 2021-10-19 | 2021-12-14 | 兴源环境科技股份有限公司 | Dirty dry-wet separator of excrement for livestock-raising |
| CN115739616A (en) * | 2022-11-18 | 2023-03-07 | 唐山陆凯科技有限公司 | Vibration screening treatment device for coal dressing |
| CN115739616B (en) * | 2022-11-18 | 2024-02-09 | 唐山陆凯科技有限公司 | Vibration screening treatment device for coal dressing |
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| CN100455363C (en) | 2009-01-28 |
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Granted publication date: 20090128 Termination date: 20100130 |