CN103264016A - Material classification device - Google Patents
Material classification device Download PDFInfo
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- CN103264016A CN103264016A CN201310144994XA CN201310144994A CN103264016A CN 103264016 A CN103264016 A CN 103264016A CN 201310144994X A CN201310144994X A CN 201310144994XA CN 201310144994 A CN201310144994 A CN 201310144994A CN 103264016 A CN103264016 A CN 103264016A
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Abstract
The invention provides a material classification device comprising a fan, a granulometric-class declining chamber, an airflow effuser and a feeding port. The airflow effuser is connected with the fan. The straight line of the airflow effuser intersects with the straight line of the feeding port; and the straight line of an airflow effuser opening is horizontal. A plurality of hoppers are arranged at the bottom of the granulometric class declining chamber. The diameter of the airflow effuser opening is 8-30 times of the average diameter of material granules. By the aid of high-speed airflow can be adjusted by the aid of the airflow effuser, according to the specific surface area difference of materials dropping from the feeding port, granules with different diameters are given with different horizontal moving speeds, so that different horizontal distances are obtained, and the granules optionally drop with gravity into the corresponding hoppers at the bottom of the granulometric-class declining chamber to realize the purpose of classification. Besides, the materials do not contact with any screening device bodies, relative friction force is avoided, and loss of devices is low.
Description
Technical field
The present invention relates to the stock grading apparatus field, especially, relate to a kind of stock grading equipment that can carry out real-time multi-layer classification to material.
Background technology
Vibrosieve equipment (as: linear vibrating screen, oval-shaped equal-thickness vibrating screen) is the visual plant of present solid material classification, is widely used in industries such as mine, building materials, coal separation, the energy, chemical industry.Vibrosieve equipment generally is the exciting force that utilizes vibrator (eccentric block or eccentric shaft) to produce, make sieve nest do periodically double vibrations along the exciting force direction, material circumference on compass screen surface is beated, regular to desired compass screen surface, to reach the classification purpose the stock grading of different size by different sieve apertures; Can adjust amplitude by the weight of adjusting eccentric block.
But there is following shortcoming in this equipment:
1, equipment branch of being merely able to carry out a particle diameter is scraped, and the material of a plurality of particle diameters then need use many screening plants simultaneously if desired;
2, screening plant adopts sieve plate to carry out stock grading, after sieve pore blockade, can cause screening efficiency obviously to descend, and has only 2-3 month the service life of sieve plate, the maintenance cost height; The equipment failure rate height, the life-span is short, and in general, the bulk life time of vibratory sieve equipment is about 5 years;
3, floor space is wide, to the requirement height of foundation of civil work; Each vibrosieve equipment has the vibrator of 2-3, and operation energy consumption is big, needs supporting independently dust pelletizing system.
Summary of the invention
The object of the invention is to provide a kind of stock grading equipment, to solve the technical problem of multi-layer classification, reduction classifying equipoment fault rate simultaneously.
For achieving the above object, the invention provides a kind of stock grading equipment, comprising that blower fan, grade branch fall the chamber and be arranged on described grade branch falls air-flow jet pipe and charging aperture on the sidewall of chamber, described air-flow jet pipe is connected with described blower fan, described air-flow jet pipe place straight line and described charging aperture place straight line have an intersection point, and described air-flow nozzle hole place straight line is horizontal line;
The bottom that falls the chamber at described grade branch arranges several hoppers, will be apart from the nearest hopper of described charging aperture as first hopper, and then the width of first hopper is W
1:
W
1=1.5*L
1
Wherein, L
1Be the horizontal flight distance of the material that falls into first hopper, R is resistance coefficient, and ρ is atmospheric density, v
aBe the horizontal velocity of the relative material of air-flow, h is air-flow nozzle hole diameter, and H is the vertical height that the bottom of chamber falls in charging aperture to grade branch, and γ is the density of material, and d is the material particular diameter of screening;
The diameter h of described air-flow nozzle hole is 8-30 times of material particles average diameter.
Preferably, the point of interface of the bottom that the chamber is fallen in vertical line and the grade branch at described air-flow nozzle exit place is as initial point, and the width of N hopper is the distalis of N hopper and the distance between the nearside point;
Nearside point is Tn:T with the distance of initial point
n=(L
n+ L
N-1)/2 n 〉=2
Namely the nearside point position of N hopper is to fall into the horizontal flight of horizontal flight distance and the material that falls into N-1 hopper of material of N hopper apart from half of sum;
The distance of distalis and initial point is Yn:Y
n=(3L
n-L
N-1)/2 n 〉=2;
The distalis position of N hopper be fall into N hopper material 3 times of horizontal flights distance and the material that falls into N-1 hopper horizontal flight apart from half of difference.
Preferably, the integral thickness of described material be the material average grain diameter 10-20 doubly.
Preferably, the grade between hopper distalis and the next hopper nearside point minute is fallen the bottom, chamber to be set to this section bottom mid point is two crossing inclined-planes at top.
Preferably, the afterbody that the chamber falls in described grade branch arranges deduster, and the bottom of described deduster arranges ash bucket.
Preferably, described deduster and described grade branch fall the relative other end in chamber and pipeline is set is connected to described blower fan.
Preferably, the grade between hopper distalis and next hopper nearside point minute is fallen bottom, chamber mid point baffle plate is set.
The present invention has following beneficial effect:
1, realize multi-layer classification simultaneously: because the particle diameter difference of material, the specific area of material then can be different, and under certain drop, difference will appear in the speed of the material of different-grain diameter under the air-flow effect, the range ability difference of material on horizontal level.According to this principle, the present invention utilizes the high velocity air regulated of air-flow nozzle hole, specific area difference according to the material that falls from charging aperture, give the different-grain diameter material different horizontal movement speed, thereby obtain different horizontal movement distances, leaving, it falls with gravity fall to grade branch in the corresponding hopper of bottom, chamber again, realizes the classification purpose; The grade of material and horizontal range can be regulated by the current rate of blower fan, and be easy to use;
2, equipment failure rate is low: thus material is to obtain different horizontal velocity classifications with air-flow contact back, material does not contact any screening plant body in fact, does not have relative friction forces, and equipment loss is little, and the life-span is long;
3, little discharging: the equipment air-flow is recycling, and micronic dust can precipitate in cyclic process gradually, realizes zero-emission to external world, environmental protection.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.With reference to figure, the present invention is further detailed explanation below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the device structure cutaway view of the preferred embodiment of the present invention;
Wherein, 1, blower fan, 2, the chamber falls in the grade branch, 3, the air-flow jet pipe, 4, charging aperture, 5, hopper, 6, deduster, 7, ash bucket, 8, baffle plate.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the present invention can implement according to the multitude of different ways that claim limits and covers.
Referring to Fig. 1, a kind of stock grading equipment, comprising that blower fan 1, grade branch fall chamber 2 and be arranged on described grade branch falls air-flow jet pipe 3 and charging aperture 4 on 2 sidewalls of chamber, described air-flow jet pipe 3 is connected with described blower fan 1, described air-flow jet pipe 3 place straight lines and described charging aperture 4 place straight lines have an intersection point, and described air-flow jet pipe 3 outlet place straight lines are horizontal line;
In the bottom that chamber 2 falls in described grade branch several hoppers 5 are set, will be apart from the nearest hopper 5 of described charging aperture 4 as first hopper, then the width of first hopper is W
1:
W
1=1.5*L
1
Consider dispersion and deviation in the material dropping process, with first hopper width W
1Be made as material horizontal flight distance L
11.5 times, make material fall into the hopper center.
And fall into the horizontal flight distance L of the material of first hopper
1Computational process such as following:
In air-flow, material is subjected to the directed force F of air-flow when air-flow is done relative motion size is:
F=Rρs(v
a-v)
2
In the formula, R is resistance coefficient, and with material shapes, surface nature is relevant with Reynolds number; ρ is atmospheric density, and unit is kg/m
3S is the front face area of material, and namely material is in the projected area of airflow direction, and unit is m
2v
aBe the absolute velocity of air-flow, unit is m/s; V is the absolute velocity of material, and unit is m/s.
In order to simplify calculating, do not consider the diffusion of spout air-flow, setting the speed of material before by spout is that 0(level, vertical component velocity are 0), material particular diameter is d, then material by the time t of spout is:
The horizontal component velocity v that obtains by spout of material so
LevelFor:
v
Level=Ft/m
In the formula, m is the quality of material particles, and unit is Kg.
Behind the abbreviation
In the formula, γ is the density of material, and unit is kg/m
3
To a certain fixture, fixing material,
It is a constant.
By above derivation, obtain material and at the horizontal range L that the drop of H moves be:
Wherein, L
1Be the horizontal flight distance of the material that falls into first hopper, R is resistance coefficient, and ρ is atmospheric density, v
aBe the horizontal velocity of the relative material of air-flow, h is air-flow nozzle hole diameter, and H is the vertical height that the bottom of chamber falls in charging aperture to grade branch, and γ is the density of material, and d is the material particular diameter of screening.
For guaranteeing the classification efficiency of equipment, the material of system feeding mouth is evenly distributed, and the diameter h of described air-flow nozzle hole is 8-30 times of material particles average diameter, guarantees the penetrable material of air-flow.The integral thickness of material is the height that material particles is piled up, and then can be the 10-20 of material average grain diameter doubly.
Preferably, as initial point, the width of N hopper is the distalis of N hopper and the distance between the nearside point with the point of interface of the vertical line at described air-flow jet pipe 3 outlet places and the bottom that chamber 2 falls in the grade branch;
Nearside point and initial point be to fall into half of this hopper material horizontal flight distance and the difference that falls into last hopper material horizontal flight distance apart from Tn, again with fall into the horizontal flight of last hopper material apart from sum, that is:
T
n=（L
n-L
n-1）/2+L
n-1 n≥2
After the simplification, obtain:
T
n=（L
n+L
n-1）/2 n≥2
That is to say: the nearside point position of N hopper is to fall into the horizontal flight of horizontal flight distance and the material that falls into N-1 hopper of material of N hopper apart from half of sum.
The distance of distalis and initial point is that Yn falls into half of this hopper material horizontal flight distance and the difference that falls into last hopper material horizontal flight distance, again with fall into this hopper material horizontal flight apart from sum, that is:
Y
n=(L
n-L
n-1)/2+L
n n≥2
After the simplification, obtain:
Y
n=(3L
n-L
n-1)/2 n≥2；
That is to say: the distalis position of N hopper be fall into N hopper material 3 times of horizontal flights distance and the material that falls into N-1 hopper horizontal flight apart from half of difference.
For example, when the horizontal flight distance L of the material that falls into first hopper
1Be 2m, fall into the horizontal flight distance L of the material of first hopper
2Be 5m, fall into the horizontal flight distance L of the material of first hopper
2During for 10m:
The width W of first hopper
1=1.5*L
1=1.5*2=3m
The nearside point of second hopper and initial point apart from T
2=(L
2+ L
1)/2=(2+5)/2=3.5m
The distalis of second hopper and the distance Y of initial point
2=(3L
2-L
1)/2=(3*5-2)/2=13/2=6.5m
The nearside point of the 3rd hopper and initial point apart from T
3=(L
3+ L
2)/2=(10+5)/2=7.5m
The distalis of the 3rd hopper and the distance Y of initial point
3=(3L
3-L
2)/2=(3*10-5)/2=25/2=12.5m.
Preferably, the bottom, chamber minute falls in grade that can be between hopper distalis and next hopper nearside point, and to be set to this section bottom mid point be two crossing inclined-planes at top, then take full advantage of the clearance spaces between two hoppers, make the material that falls into this clearance spaces fall into the both sides hopper along the inclined-plane.
Perhaps, grade that can be between hopper distalis and next hopper nearside point minute is fallen bottom, chamber mid point baffle plate is set, and material is kept off in the nearer hopper of this material drop point.
The afterbody that the chamber falls in described grade branch arranges deduster, and the bottom of described deduster arranges ash bucket, can make that micronic dust enters deduster with air-flow, and fall in the ash bucket naturally along with the depletion of air velocity.
Described deduster and described grade branch fall the relative other end in chamber and pipeline is set is connected to described blower fan, recycling fan airflow, environmental protection.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. stock grading equipment, it is characterized in that, comprising that blower fan, grade branch fall the chamber and be arranged on described grade branch falls air-flow jet pipe and charging aperture on the sidewall of chamber, described air-flow jet pipe is connected with described blower fan, described air-flow jet pipe place straight line and described charging aperture place straight line have an intersection point, and described air-flow nozzle hole place straight line is horizontal line;
The bottom that falls the chamber at described grade branch arranges several hoppers, will be apart from the nearest hopper of described charging aperture as first hopper, and then the width of first hopper is W
1:
W
1＝1.5*L
1
Wherein, L
1Be the horizontal flight distance of the material that falls into first hopper, R is resistance coefficient, and ρ is atmospheric density, v
aBe the horizontal velocity of the relative material of air-flow, h is air-flow nozzle hole diameter, and H is the vertical height that the bottom of chamber falls in charging aperture to grade branch, and γ is the density of material, and d is the material particular diameter of screening;
The diameter h of described air-flow nozzle hole is 8-30 times of material particles average diameter.
2. a kind of stock grading equipment according to claim 1, it is characterized in that, the point of interface of the bottom that the chamber is fallen in vertical line and the grade branch at described air-flow nozzle exit place is as initial point, and the width of N hopper is the distalis of N hopper and the distance between the nearside point;
Nearside point is Tn:T with the distance of initial point
n=(L
n+ L
N-1)/2 n 〉=2
Namely the nearside point position of N hopper is to fall into the horizontal flight of horizontal flight distance and the material that falls into N-1 hopper of material of N hopper apart from half of sum;
The distance of distalis and initial point is Yn:Y
n=(3L
n-L
N-1)/2 n 〉=2;
The distalis position of N hopper be fall into N hopper material 3 times of horizontal flights distance and the material that falls into N-1 hopper horizontal flight apart from half of difference.
3. a kind of stock grading equipment according to claim 1 is characterized in that, the integral thickness of described material is 10-20 times of material average grain diameter.
4. a kind of stock grading equipment according to claim 1 is characterized in that, the bottom, chamber minute falls in the grade between hopper distalis and the next hopper nearside point, and to be set to this section bottom mid point be two crossing inclined-planes at top.
5. a kind of stock grading equipment according to claim 1 is characterized in that, the afterbody that the chamber falls in described grade branch arranges deduster, and the bottom of described deduster arranges ash bucket.
6. a kind of stock grading equipment according to claim 5 is characterized in that, described deduster and described grade branch fall the relative other end in chamber and pipeline is set is connected to described blower fan.
7. a kind of stock grading equipment according to claim 1 is characterized in that, the grade between hopper distalis and next hopper nearside point minute is fallen bottom, chamber mid point baffle plate is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144994.XA CN103264016B (en) | 2013-04-24 | 2013-04-24 | A kind of material grading apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310144994.XA CN103264016B (en) | 2013-04-24 | 2013-04-24 | A kind of material grading apparatus |
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|---|---|
| CN103264016A true CN103264016A (en) | 2013-08-28 |
| CN103264016B CN103264016B (en) | 2015-09-30 |
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ID=49007702
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|---|---|---|---|
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008539A (en) * | 2017-05-24 | 2017-08-04 | 湖北馥雅食品科技有限公司 | Lowtemperaturepulverizer for high-lipid material |
| CN107138414A (en) * | 2017-05-31 | 2017-09-08 | 深圳市春仰科技有限公司 | Particle classifying equipment |
| CN109366782A (en) * | 2018-06-08 | 2019-02-22 | 国宏中晶集团有限公司 | A kind of preparation facilities and method of the thermoplastic sulfurized rubber containing waste-tyre rubber-powder |
| CN109954873A (en) * | 2017-12-26 | 2019-07-02 | 中国科学院苏州纳米技术与纳米仿生研究所 | Sieve the method and device of the laser spheroidization cemented carbide powder of varying particle size |
| CN110947618A (en) * | 2019-12-05 | 2020-04-03 | 芜湖鼎恒材料技术有限公司 | Rectifier with adjustable go up and down |
| CN112121528A (en) * | 2020-08-31 | 2020-12-25 | 山东省地矿工程勘察院 | Mud pit with mud purifies and classification function |
| CN114558778A (en) * | 2022-04-29 | 2022-05-31 | 中国空气动力研究与发展中心计算空气动力研究所 | Micron-sized powder material controllable classification airflow sieve and screening method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008539A (en) * | 2017-05-24 | 2017-08-04 | 湖北馥雅食品科技有限公司 | Lowtemperaturepulverizer for high-lipid material |
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| CN109366782A (en) * | 2018-06-08 | 2019-02-22 | 国宏中晶集团有限公司 | A kind of preparation facilities and method of the thermoplastic sulfurized rubber containing waste-tyre rubber-powder |
| CN110947618A (en) * | 2019-12-05 | 2020-04-03 | 芜湖鼎恒材料技术有限公司 | Rectifier with adjustable go up and down |
| CN112121528A (en) * | 2020-08-31 | 2020-12-25 | 山东省地矿工程勘察院 | Mud pit with mud purifies and classification function |
| CN114558778A (en) * | 2022-04-29 | 2022-05-31 | 中国空气动力研究与发展中心计算空气动力研究所 | Micron-sized powder material controllable classification airflow sieve and screening method |
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