CN2165936Y - Double proton resonance screen - Google Patents
Double proton resonance screen Download PDFInfo
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- CN2165936Y CN2165936Y CN 93216278 CN93216278U CN2165936Y CN 2165936 Y CN2165936 Y CN 2165936Y CN 93216278 CN93216278 CN 93216278 CN 93216278 U CN93216278 U CN 93216278U CN 2165936 Y CN2165936 Y CN 2165936Y
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Abstract
The utility model relates to a sitting double proton resonance screen for screening solid materials or grading particles. The screen machine is composed of a vibration exciter, a screen box, a screen plate, a vibration isolation device and a mobile car. A complex excitation spring is formed by a plate spring and a rubber spring. The utility model has the advantages of light weight, long service life, quick braking, high screening efficiency and large processing capacity. The utility model is an important working tool in mining industry, metallurgy industry, etc. In addition, the products can be made into seriation.
Description
The utility model relates to a kind of seat formula resonance screens with screening of what solid material or gradation.The particularly suitable what is very difficult to sieve or used material one sintering deposit of blast furnace of gradation, the screening of coke.
In general job, the screening of raw material or product is an important operation.Particularly in industries such as mining industry and metallurgy, the quality of screening operation is normally carrying out of influence production directly.In blast furnace ironmaking process, crude fuel screening quality directly influences the direct motion of blast furnace.The blast furnace groove is sieve down, has adopted the ellipse garden sieve of introducing from Japan in recent ten years.But big (16～18 tons/platform) fluctuation of service of this sieve weight, fault is many, disposal ability is little, screening efficiency is low, the single-point dynamic loading is big.China utility model patent CN85200411 disclosed " inertia resonance probability screen " is a kind of novel resonance screens of China's research and development.It is a suspension type inertia resonance probability screen, and screen(ing) machine is formed main vibrating system by two vibration plastids and shearing rubber spring.Shear rubber spring aspect structural design, do not adjust the means of spring rate, be difficult to make probability screen under desirable Near resonance oscillating situation, to carry out work, the requirement that more difficult adaptation condition parameter changes, screening efficiency is low, gives applying and bringing certain degree of difficulty to large scale development of resonance probability screen.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, design a kind of screening efficiency height, disposal ability big, in light weight, operate steadily, the single-point dynamic loading is little, stop rapidly, fault is few, the life-span is long resonance screens.
The technical solution of the utility model is the two resonant vibratory sieves of plastid of inertia, and the complex excitation spring that flat spring and garden post compression rubber spring are formed is housed between two vibration plastids.As balance plastid m
2Vibrator is by the complex excitation spring and as plastid m
1Screen box link and form main vibrating system, this screen(ing) machine is worked under the Near resonance oscillating situation, the intrinsic frequency of the lower slightly what master of its operating frequency vibrating system.The resonance theory of two plastid system if with
As Near resonance oscillating theoretical foundation, wherein Z
0Be frequency ratio, Z
0=(ω)/(ω
0), ω is an excited frequency.When pressing Z
0When being designed to quantitative values, as the exciting vibration spring stiffness K
1During variation, then main vibrating system intrinsic frequency ω
0With K
1Variation and change, therefore to reach the Near resonance oscillating condition, available change number of springs or size make K
1Become desired numerical value, also just reached the purpose of resonance screens in the operation of Near resonance oscillating district.This is the guiding theory of the utility model design, with the stiffness K of exciting vibration spring
1Must be designed to debug, just can reach and give the phase purpose.Describe below in conjunction with accompanying drawing.
Fig. 1 is two plastid resonance screens structural representations.
Fig. 2 is the exciter structure schematic diagram
Fig. 3 is a spring stripe shape sieve plate schematic diagram.
Fig. 4 is no counterweight spring schematic diagram.
Fig. 5 is for there being counterweight spring schematic diagram.
As shown in Figure 1, the utility model is made up of vibrator 5, screen box 1, isolation mounting (being made up of vibration isolation rubber spring 2,4 and vibration isolation frame 3), upper strata sieve plate 8, lower floor's sieve plate 9, locomotive 7.
Vibrator is a core component (see figure 2) of the present utility model.Excitation principle is to produce exciting force with the rotation of driven by motor eccentric wheel, by exciting vibration spring exciting force is passed to screen box, makes screen box produce vibration.In order to make Mass Distribution even, the utility model can adopt bi-motor to force the synchronous vibration mode.Also can adopt a motor, but the motor center of gravity must be on the exciting center line.Bi-motor 12 drives eccentric wheel 17 rotations by belt pulley 11 and belt 10.Two eccentric wheels are installed in the two ends of main shaft 15.Main shaft is contained on the vibrator frame by bearing block 16.
Vibrator 5 is linked together with screen box 1 by flat spring 18 and garden post rubber spring 19.Form complete main vibrating system.It is the core of finishing the solid material screening.Can resonance screens in Near resonance oscillating state work, and key is that the structure of exciting vibration spring is wanted rationally, and rigidity will be accurately and reliably, so the material of flat spring 18 is selected 60Si for use
2Nn, garden post rubber spring then requires rigidity accurate, and the intensity height is so material can select for use natural gum also can select rubber polymer for use.
On screen box 1 is dull and stereotyped and the both sides between vibrator 5 base plates adorn three rubber cylinders 19 by bolt, on vibrator 5 base plates, load onto simultaneously three rubber cylinders equally, and on a center line, in the screen(ing) machine running, garden post rubber spring is subjected to the alternation compression in couples.And the middle part of flat spring 18 is by pressing plate and bolt and be linked together above screen box 1 flat board, be in the same place by the pressing plate and the bottom plate connecting of bolt and vibrator frame 5 in the two ends of flat spring, must consider resonance screens in running when design, garden post rubber spring and flat spring can not interfere with each other phenomenon.Garden post rubber spring pre compressed magnitude is 1.1～1.4 times of dynamic deformation amount, to guarantee that complex spring is in the range of linearity in running.Flat spring is born main spring rate, the quantity of available increase and decrease flat spring; Change the jib-length of flat spring; The thickness of change flat spring or width dimensions etc. all can change exciting vibration spring system stiffness K
1, but all need not to change vibrator 5 and the appearance and size of screen box 1 and mutual installation relation, just resonance screens can be debugged the purpose of Near resonance oscillating district operation.The method of the quality ratio between the two plastids of also available in addition adjustment is carried out, and for this reason, has designed balancing weight 14, is installed between two motors on vibrator (see figure 2) top on the center.
The adjustment of the system frequency of Near resonance oscillating is to realize important means of the present utility model, and before therefore every resonance screens dispatched from the factory, its intrinsic frequency must be adjusted, and clearly regulation is made in product description reply spring specification, model, performance, specification requirement.
Screen box is a vitals (see figure 1) of finishing the screening function, and screen box is made up of side plate, backboard, sieve plate beam, brace summer, upper strata sieve plate 8 and lower floor's sieve plate 9 etc.Upper strata sieve plate and lower floor's sieve plate are the core components of finishing solid material screening and gradation, the pass of upper strata sieve plate adopts dredges the castor flute profile, the pass of lower floor's sieve plate adopts spring hinge cantilevered stripe shape sieve aperture, screen box overall construction design compactness, has improved the effective sifting area of screen(ing) machine.In order to improve the disposal ability of screen(ing) machine, upper and lower layer compass screen surface arranged by the broken line mode, just to begin every section screen angle from feeding mouth descending for compass screen surface, its screen angle changes in 15 °～30 ° scopes, this is to have utilized uniform thickness sieve principle, can play material and begin to quicken layering from the material feeding point, progressively diminish by what compass screen surface angle simultaneously, the material speed of service slows down, improved the screening time of material on compass screen surface, favourable what improves screening efficiency, thereby reaches the purpose that improves screen(ing) machine disposal ability and screening efficiency.
The vibrating isolation system (see figure 1) is made up of vibration isolation frame 3, vibration isolation garden post rubber spring 2, a two-stage vibration isolation garden post rubber spring 4; employing garden post rubber spring; damping is big; can realize quick shutdown; be provided with in addition two-stage vibration isolation purpose, be the single-point dynamic loading that reduces screen(ing) machine; in order to guarantee good vibration isolating effect, having taken into full account vibration isolation frame quality and screen box mass ratio when screen(ing) machine designs is 0.4～0.7, guarantees that vibration isolation is than in 2～10 scopes.
Safeguard for convenience and maintenance, the replacing of consumable accessory, this screen(ing) machine is provided with locomotive, and its structure comprises vehicle frame, wheel, bearing block and axle.
The design function of this screen(ing) machine is more complete in sum, but the screen(ing) machine overall weight has only 8.5t/ platform (the two plastid resonance screens of 1.5 * 4m)
Solving the sieve plate hole plug is the important topic that improves the screen(ing) machine screening efficiency, and for the used material-sintering deposit of blast furnace, coke, if above material particles classification, the practice explanation of 12mm, herringbone or thin castor profile of tooth sieve plate hole are adopted in the sieve plate hole, and percentage of plugged hole is very low.If the material particles classification of 0-12mm, sieve plate hole are adopted straight hole, herringbone hole, dredged the castor scallop, its percentage of plugged hole is up to 30-50%, is serious to the screening efficiency influence of screen(ing) machine.So the utility model has designed spring hinge cantilever structure pass to what 0-12mm material screening, be divided between the spring two kinds of counterweight (see figure 4) and no counterweight (see figure 5)s are arranged, interlaced arrangement, one group of spring sieve plate (see figure 3) comprises garden beam 20, no counterweight spring 21 and counterweight spring 22, spacer ring 23 is arranged.In the time of in material particles is stuck in sieve aperture, different with amplitude by what spring 21 with 22 intrinsic frequency, the amplitude that forms between the spring has phase angle difference, changing of the relative positions phenomenon just,, sieve plate hole genus straight hole scope, material particles solved the contradiction of screen(ing) machine disposal ability and screening efficiency although just can producing stuck phenomenon (being commonly called as sieve pore blockade) in sieve aperture.
Exciting angle δ and screen angle α choose (see figure 1): the influence to productivity ratio is amplitude, thickness of feed layer, screen angle more significantly.And amplitude, thickness of feed layer all are obvious factors of influence to screening efficiency and productivity ratio.According to production practices and test determination the utility model, the exciting angle is all values between S=45 °～60 °, screen angle is all values between α=10～30 °, in order to accelerate material layering, improve the screen(ing) machine disposal ability, upper and lower layer screen angle sectional increases progressively (broken line type), and thickness of feed layer is best with little what 150mm.
Main vibrating system adopts the complex excitation spring of being made up of flat spring and garden post compression rubber spring, and wherein flat spring bears 80% exciting vibration spring rigidity, and garden post compression rubber spring only bears 20% rigidity.Flat spring is long fatigue life, and rigidity is linear change, and garden post compression rubber spring has the convenient and system damping effect of rigidity fine setting, thereby has the advantage that cut-off velocity is fast, the life-span is grown.
It is big that the utility model also has disposal ability, screening efficiency height, in light weight, advantage such as power of motor is little, cut-off velocity is fast.As the two plastid resonance screens of 1.5 * 4m, disposal ability reaches 530t/h, and screening efficiency is equivalent to the level of production of 2.5 * 7.5m self-synchronizing vibrating screen more than 80%.This screen(ing) machine weight is the 8.5t/ platform, and 2.5 * 7.5m self-synchronizing vibrating screen weight is 25t, and ellipse garden sieve is 16-18t.This screen(ing) machine single-point dynamic loading is 50kg, and be 3-5 second down time.
Description of drawings
Fig. 1 is two plastid resonance screens structural representations
Fig. 2 is the exciter structure schematic diagram
Fig. 3 is a spring stripe shape sieve plate schematic diagram
Fig. 4 is no counterweight spring schematic diagram
Fig. 5 is for there being counterweight spring schematic diagram
Wherein
1 screen box, 2 vibration isolation garden post rubber springs, 3 vibration isolation framves, 4 two-stage vibration isolation garden post rubber springs, 5 vibrators, 6 exciting vibration springs (comprising flat spring and garden post rubber spring), 7 locomotives, 8 upper strata sieve plates, 9 lower floor's sieve plates, 10 V belts, 11 belt pulleys, 12 motors, 13 vibrator framves, 14 balancing weights, 15 main shafts, 16 bearing blocks, 17 eccentric wheels, 18 flat springs, 19 garden post rubber springs, 20 garden beams, 21 no counterweight springs, 22 have the counterweight spring, 23 spacer rings, 24 no counterweight spring schematic diagrames, 25 have counterweight spring schematic diagram.
Claims (3)
1, two plastid resonance screens of a kind of solid material screening or gradation, form by vibrator, screen box, sieve plate, exciting vibration spring, isolation mounting and locomotive, vibrator is made of motor pulley and eccentric block, exciting force, connect with exciting vibration spring between vibrator and the screen box, it is characterized in that forming exciting vibration spring with flat spring and garden post compression rubber spring; Sieve plate is the spring interlaced arrangement that constitutes counterweight and no counterweight with spring hinge cantilever.
2, as claimed in claim 1 pair of plastid resonance screens, its feature adopts bi-motor or single motor to drive the eccentric block rotation by belt pulley at the what vibrator.
3, as claimed in claim 1 or 2 pair of plastid resonance screens is characterized in that all values between the exciting angle δ=45 °～60 °, all values between screen angle α=10 °～30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93216278 CN2165936Y (en) | 1993-06-22 | 1993-06-22 | Double proton resonance screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93216278 CN2165936Y (en) | 1993-06-22 | 1993-06-22 | Double proton resonance screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2165936Y true CN2165936Y (en) | 1994-05-25 |
Family
ID=33796504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93216278 Expired - Lifetime CN2165936Y (en) | 1993-06-22 | 1993-06-22 | Double proton resonance screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2165936Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069022A (en) * | 2010-02-08 | 2011-05-25 | 章训芬 | Jaw vibration crusher |
| CN101530847B (en) * | 2009-04-10 | 2012-07-25 | 东北大学 | Anti-resonance type resonance screen |
| CN102671857A (en) * | 2011-03-13 | 2012-09-19 | 李卓 | Two-mass resonance screen |
| CN102744200A (en) * | 2012-07-04 | 2012-10-24 | 江苏永钢集团有限公司 | Screening device for granulated slag raw material |
| CN102744203A (en) * | 2012-07-17 | 2012-10-24 | 昆明茨坝矿山机械有限公司 | Sub-resonant two-mass energy-saving vibrating screen |
| CN103769366A (en) * | 2014-02-20 | 2014-05-07 | 唐山陆凯科技有限公司 | Connecting and supporting device of resonance screen box |
-
1993
- 1993-06-22 CN CN 93216278 patent/CN2165936Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101530847B (en) * | 2009-04-10 | 2012-07-25 | 东北大学 | Anti-resonance type resonance screen |
| CN102069022A (en) * | 2010-02-08 | 2011-05-25 | 章训芬 | Jaw vibration crusher |
| CN102671857A (en) * | 2011-03-13 | 2012-09-19 | 李卓 | Two-mass resonance screen |
| CN102744200A (en) * | 2012-07-04 | 2012-10-24 | 江苏永钢集团有限公司 | Screening device for granulated slag raw material |
| CN102744203A (en) * | 2012-07-17 | 2012-10-24 | 昆明茨坝矿山机械有限公司 | Sub-resonant two-mass energy-saving vibrating screen |
| CN103769366A (en) * | 2014-02-20 | 2014-05-07 | 唐山陆凯科技有限公司 | Connecting and supporting device of resonance screen box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |