CN101502830A - Mono-layer banana screen - Google Patents
Mono-layer banana screen Download PDFInfo
- Publication number
- CN101502830A CN101502830A CNA200810153988XA CN200810153988A CN101502830A CN 101502830 A CN101502830 A CN 101502830A CN A200810153988X A CNA200810153988X A CN A200810153988XA CN 200810153988 A CN200810153988 A CN 200810153988A CN 101502830 A CN101502830 A CN 101502830A
- Authority
- CN
- China
- Prior art keywords
- screen
- screening
- sieve
- angles
- sieve nest
- Prior art date
Links
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- 241000234295 Musa Species 0.000 claims abstract description 15
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- 239000003925 fat Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229910000746 Structural steel Inorganic materials 0.000 claims description 2
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- 229920000728 polyesters Polymers 0.000 claims description 2
- 239000007921 sprays Substances 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000006297 dehydration reactions Methods 0.000 abstract description 2
- 229910052500 inorganic minerals Inorganic materials 0.000 abstract description 2
- 239000011707 minerals Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 239000002356 single layers Substances 0.000 abstract 1
- 238000005516 engineering processes Methods 0.000 description 10
- 239000000463 materials Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Abstract
Description
Technical field
The present invention relates to a kind of vibratory sieve, particularly a kind of mono-layer banana screen.
Background technology
In recent years, along with China's economy and science and technology develop rapidly, material sieving technology is had higher requirement, press for screening plant to high efficiency, large scale development, press for that performance is more advanced, operation is more reliable, screening efficiency is higher, disposal ability is bigger, the novel banana screen of longer service life multi-angle polygonal line screen surface.Because more domestic enterprise's banana screen development times are short, with low content of technology at present, manufacture level is poor, in time do not improve and improve, be difficult to typing and popularization, product can not satisfy higher instructions for use, selects the more excellent import equipment of quality mostly for use so design of newly-built coal preparation plant and old coal preparation plant transform.Banana screen is research and development and the practice through two more than ten years in developed countries such as Germany, the U.S. and Australia, and product technology is leading in the world.Be raising China equipment manufacture technical merit, surpass the advanced, the banana screen technological innovation is imperative.
Summary of the invention
The present invention is directed to the existing deficiency of existing technology, a kind of novel mono-layer banana screen is provided.Be mainly used in coal classification, desliming, dehydration de-mediated, also be applicable to the sieving and grading of other mineral.The present invention uses the screening with constant bed thickness principle and the straight-line oscillation theory is carried out optimized design, vibration parameters such as amplitude, frequency, exciting force rationally are provided with by sieving technology requirement and scientific experimentation result, just right, avoid sieve nest intrinsic frequencies at different levels, reduce the stressed negative influence of resonance at each position of sieve nest, improve the screen(ing) machine serviceability, prolong screen(ing) machine fatigue life.Lateral wall, crossbeam, crossbeam and each rigidity of structure is big, intensity is high, stressed distribution is rationally balanced, safety coefficient is big.Exciting beam, beam structure design original, and the whole penetrations of principal weld carry out one-level UT flaw detection, and welding stress is eliminated in heat treatment fully, carries out Precision Machining by the large-sized numerical control Mechanical Processing Center.The box vibrator of Specialty Design and hand work processing and manufacturing is installed on the vibrator crossbeam, by rubber disc shaft coupling and spline shaft be connected with driving mechanism, reliably pass to sieve body power and straight-line oscillation power reposefully.Beam surface coating high standard wear-and corrosion-resistant glue fat, more effective protection crossbeam is not frayed.The side plate arrangement of reinforcement is rationally attractive in appearance, stress coefficient is little, rigidity is big, outward appearance is novel.
The present invention is many inclination angles multistage individual layer compass screen surface uniform thickness straight-line oscillation screening machine, comprises 4～8 angle polygonal line screen surface dozens of specifications, and have following characteristics: the simple structure Compact Design reaches 8 years service life, and the general homemade vibratory sieve life-span was less than 5 years; In light weight lighter more than 20% than best homemade equal specification banana screen; Power consumption is few littler more than 20% than best homemade equal specification banana screen; Screening efficiency is up to more than 95%, and the material disposal ability is 1.5～2 times of generic linear sieve; Cover surface is from 3m 2To 40m 2Specification is many, and sieve type kind is complete, can fully satisfy the sieving technology requirement of different pan feeding characteristics and different disposal amount.
Solution of the present invention is:
A kind of novel mono-layer banana screen mainly is made up of sieve nest (1), vibrator (2), jackshaft (3), driving shaft (4), motor (5), belt transmission (6), countershaft pair (7), buffer spring (8), sieve plate (9):
(1) sieve nest: mainly form by lateral wall, crossbeam, exciting beam, draw-beam and postnotum etc., sieve nest is designed to single-deck screen bodily form formula, each parts selects for use high-quality structural steel to manufacture meticulously, and crossbeam, exciting beam, the whole heat treatments of draw-beam postwelding use senior Digit Control Machine Tool to carry out machined.Select the high-quality ring-grooved rivet then for use, adopt advanced cleaning sealing assembly technology the sieve nest rivet clasp.Side plate does not have weld seam, and crossbeam, exciting beam section coefficient is big, rigidity is big.Beam surface is coated with wear-resisting glue fat, and the sieve nest surface treatment sprays the polyester protective paint after reaching the Sa2.5 level.The sieve nest manufacturing is assembled each procedure and is all passed the searching test and check on.The sieve nest structure is by optimal design, and is in light weight.Sieve nest can be accomplished to avoid each parts to split and wear and tear under high load capacity high-frequency vibration duty, has higher anti-fatigue ability, reliability and service life.
(2) vibrator: adopt the special vibrating bearing of the up-to-date development of German SKF, gear housing machining accuracy height, light in structure, good seal, rapid heat dissipation, oil-proof, noise is low, easy to maintenance, durable reliable; Centering block is provided with a plurality of chock filling modes makes the eccentric moment or the exciting force of big parameter satisfy different vibration indexs and instructions for use; Adopt magnetic drain plug with the iron filings in the in good time absorption gear lubricant, improve oil quality; Adopt splash lubrication, select the high-grade lubricating oil of world's famous brand for use, improve the result of use and the life-span of machine greatly; Vibrator can be under-30 ℃ ~+80 ℃ temperature operate as normal.
(3) jackshaft: between two vibrators, connect, so that left and right sides vibrator rotates synchronously with a jackshaft.The jackshaft two ends adopt unique elastic caoutchouc dish shaft coupling to link to each other with the vibrator centering block.Jackshaft is stiff shaft, and is non-maintaining, unlubricated.
(4) driving shaft: be the general-purpose locomotive universal drive shaft that a contact static determinacy is installed driving mechanism and dynamic shaker body, the life-span is long, maintenance is few.
(5) motor: driving mechanism adopts the latest model motor, and staring torque is big, quickens can make screen(ing) machine spend resonance region rapidly soon.Motor is installed on the track base so that belt tension.Motor performance is reliable, can guarantee the continuity that the user produces, and few shutdown, fecund go out.
(6) belt transmission: driving mechanism adopts the SPB belt transmission to carry out speed governing to slow down, and transferring power is adjusted belt tightening with track base leading screw degree of tightness motor, make belt use reasonable, the life-span is long.
(7) countershaft pair: the countershaft pair of driving mechanism is made up of countershaft, SKF bearing, sleeve, labyrinth seal and open bearing seat, and is durable reliable, convenient for installation and maintenance.
(8) buffer spring: vibratory sieve body and mounting base adopt the steel spiral compression spring to carry out anti-vibration and shock.Both ends of the spring adds rubber blanket, reduces the abrasion and the friction noise of spring and steel spring seat board.Spring rate is little, makes the basis bear dynamic loading and reduces, and damping efficiency is more than 98%.The spring wire footpath is enough, makes spring more endurance, non-frangibility.
(9) sieve plate: the patent No. that adopts Tianjin Weide Mine Equipment Co., Ltd. to produce is the standard module polyurethane Combined sieve board of ZL200620150160.5, this sieve plate systems technology is leading in the world, sieve-plate aperture ratio is big, the sieve seam is difficult for stopping up, screening efficiency height, intensity are very much not yielding, wear-resistant long service life, easy accessibility is in liberal supply.
Operation principle of the present invention is: the driving mechanism motor connects the electricity rotation, by the belt gear speed governing, pass to driving shaft and drive vibrator running generation straight-line oscillation power by countershaft adjutant driving force, straight-line oscillation power moves in circles continuous action on sieve nest, sieve nest is vibrated on buffer spring, buffer spring reduces the dynamic load of sieve nest to the screen(ing) machine brace foundation simultaneously, sieve nest drives compass screen surface synchronous vibration, power is passed to sieve go up feed, impact feed and throw the compacting layering saturating sieve classification of granularity in accordance with regulations that advances at compass screen surface, successively import to the plate buffering that connects material at feed from the pan feeding chute, sieve processing by compass screen surface, screenings enters sieve chute down, and oversize enters the discharge chute.
On the present screening with constant bed thickness principle of service behaviour excrescence, for example: adopt 5 sections broken line shapes of 5 angles compass screen surface, screen angle is respectively 25 °, 20 °, 15 °, 10 °, 5 ° and successively decreases piecemeal from the feeding end to the exhaust end efficiently in the present invention.Under the effect of exciting force, to exhaust end continuous impelling advancing formation logistics, the big more logistics speed of screen angle is fast more on compass screen surface for material.The feeding end feed is many, but screen angle is big, and material movement is speeded up, and the rapid attenuation of the bed of material, and very fast layering are sieved easy sieve particle thoroughly.Middle each section and exhaust end compass screen surface are handled leading portion piecemeal and are sieved part material group afterwards thoroughly, and feed reduces gradually, and the inclination angle flow velocity reduces gradually.Because the thickness of the bed of material is directly proportional with feeding coal and material flow on the compass screen surface, make thickness of feed layer impartial substantially at each section compass screen surface from the feeding end to the exhaust end, thickness of feed layer is distributed at compass screen surface suitably rationally be convenient to screening, the chance that particulate is contacted with compass screen surface increases is convenient to sieve.Therefore, compare with common sieve method, screening with constant bed thickness can significantly improve the treating capacity and the screening efficiency of sieve.
The present invention carries out tight test and running test run in continuous 24 hours in factory, adopts the senior FFT specialty analysis instrument of German import to carry out frequency response and dynamic analysis, guarantees the reliable and product high-quality of maneuvering performance.Its working system is S1, guarantees steady and continuous work in 24 hours.And operating noise is low, and sound level is lower than 75 decibels, operates steadily.Carried out improving according to long-term production practice with by the finite element force analysis and improved, manufacture and design meet GB Machine Design standard, the international electrical standard of IEC, JB/T9022-1999[vibratory sieve design specification] and the JB/T5496-2004[vibratory sieve make general technical specifications] reach the requirement of relevant coal preparation machine industry standard.
Description of drawings
Fig. 1 is the front view of the embodiment of the invention.
Fig. 2 is the profile of the embodiment of the invention.
Fig. 3 is the plus mateial flow diagram of the embodiment of the invention.
The specific embodiment
Referring to Fig. 1, Fig. 2, shown in Figure 3, the driving mechanism motor connects the electricity rotation, by the belt gear speed governing, pass to driving shaft and drive vibrator running generation straight-line oscillation power by countershaft adjutant driving force, straight-line oscillation power moves in circles continuous action on sieve nest, sieve nest is vibrated on buffer spring, buffer spring reduces the dynamic load of sieve nest to the screen(ing) machine brace foundation simultaneously, sieve nest drives sieve plate synchronous vibration, power is passed to sieve go up feed, impact feed and throw the compacting layering saturating sieve classification of granularity in accordance with regulations that advances at sieve plate, successively import to the plate buffering that connects material at feed from the pan feeding chute, sieve processing by sieve plate, screenings enters sieve chute down, and oversize enters in the discharge chute.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810153988XA CN101502830A (en) | 2008-12-11 | 2008-12-11 | Mono-layer banana screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810153988XA CN101502830A (en) | 2008-12-11 | 2008-12-11 | Mono-layer banana screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101502830A true CN101502830A (en) | 2009-08-12 |
Family
ID=40975279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810153988XA CN101502830A (en) | 2008-12-11 | 2008-12-11 | Mono-layer banana screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101502830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861685A (en) * | 2014-02-28 | 2014-06-18 | 中国矿业大学盱眙矿山装备与材料研发中心 | Mining differential high-crushing-ratio four-roller tooth-type crusher |
-
2008
- 2008-12-11 CN CNA200810153988XA patent/CN101502830A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861685A (en) * | 2014-02-28 | 2014-06-18 | 中国矿业大学盱眙矿山装备与材料研发中心 | Mining differential high-crushing-ratio four-roller tooth-type crusher |
| CN103861685B (en) * | 2014-02-28 | 2015-09-30 | 中国矿业大学盱眙矿山装备与材料研发中心 | A kind of mining difference high ratio of reduction four running roller pick breaker |
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