CN101961671A - Variable-rigidity double-mass vibration exciter type super-huge vibration mill - Google Patents
Variable-rigidity double-mass vibration exciter type super-huge vibration mill Download PDFInfo
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- CN101961671A CN101961671A CN 201010504003 CN201010504003A CN101961671A CN 101961671 A CN101961671 A CN 101961671A CN 201010504003 CN201010504003 CN 201010504003 CN 201010504003 A CN201010504003 A CN 201010504003A CN 101961671 A CN101961671 A CN 101961671A
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Abstract
The invention relates to a vibration mill, in particular to a variable-rigidity double-mass vibration exciter type common vibration mill or super-huge vibration mill, belonging to the technical field of vibration utilization engineering. The vibration mill comprises an upper mass, a lower mass, a motor, a motor base, a coupling, a coupling guard, a master vibration spring, a vibration isolation spring and a base, wherein the upper mass comprises a barrel, a feed port, an end cap, a discharge port, a vibration exciter, a right connecting frame, a milling medium, a left connecting frame and a counterweight body; the upper mass and the lower mass are connected through the master vibration spring, and the inner diameter of the master vibration spring is matched with the outer diameter of a guide pillar of the master vibration spring on the upper mass and the lower mass; and the lower mass is supported on the base through the vibration isolation spring. The barrel can be actively supported on the lower mass through the master vibration spring, and the vibration exciter is rigidly solidified on the right side of the barrel by using a right coupling bracket.
Description
Technical field
The present invention becomes the two super-huge vibromills of plastid vibrator formula of rigidity and relates to a kind of vibromill, and particularly a kind of general vibromill or super-huge vibromill with change rigidity, two plastid, vibrator exciting form belongs to vibration and utilize field of engineering technology.
Background technology
Vibromill is to utilize vibration principle to finish the vibrating mechanical equipment of material comminution process, common vibromill is made of the one or more tubulars or other shapes of containers that are bearing on the spring, this container or by one in center of gravity rotation or by a plurality of vibrators that are tuned on the center of gravity, be similar to the imbalance motion of circular vibration, be contained in mill in the grinding machine container be situated between (grinding charge material and medium) produce collision and friction, fragmentation be that self each other and mill is situated between because mill is situated between and chamber wall between collision and the result that brings of friction.The operative orientation motion that mill is situated between and is moulding vibrator, make material grinding, flow and transportation work normally carries out.
At present, the domestic and international particularly super-huge vibromill (barrel diameter＞1.5m of vibromill, volume＞10kL, the monotubular elemental body Chang Gangdu eccentric vibration mill (Zhang Shili that adopt of installed power＞200kW) more, super-huge vibromill and application thereof, metallurgical industry publishing house, 2007), its principle repeats no more, it can produce by circle, the inhomogeneous vibration oval and the linear combination of vibrations forms, additional ellipse and the straight-line oscillation that occurs of more common vibromill, can improve mill Jie speed, impulsive force and frictional force, increase crushing effect, but because grinding mill barrel materials inside, the impact of heterogeneous object complexity such as medium and barrel, collision, friction, flow and wait motion, system speed fluctuation in addition, the acceleration fluctuation, the influence of factors such as mains fluctuations can make shaking frequently of system, amplitude, exciting force, performance parameters such as oscillation intensity will change, system's varying load characteristic of formation.Have the elemental body Chang Gangdu vibromill of technology following problem can occur now, problem is more outstanding after particularly maximizing:
(1) energy consumption height: because there is the low energy district in grinding mill barrel inside, and be normal stiffness system, make that the grinder system energy consumption under the varying load characteristic is still higher, efficient is lower.
(2) structure rapid wear: local housing construction strength weak, easily distortion, fragile; Cause and repair frequency height, or repair invalid.
(3) bearing problem: have impact, collision, frrction load between each part of bearing, the vicious circle that causes heating, wearing and tearing and lubricating oil scrap to pollute improves the bearing failure probability greatly.
(4) spring problem: existing vibromill metal coil spring, air spring or the rubber springs that adopt more, exist damping hour amplitude very big and organism stress is very big, amplitude was again little and efficient obviously reduces when damping was big.
(5) vibration isolation problem: vibration isolation weak effect during the work of elemental body vibrational system, continue, under big, the impact that changes, collision, the effect of shearing uniformly varying load, vibration directly can be passed to Equipment Foundations and had influence on peripheral equipment and building on the one hand, can make machine breakdown when serious and stop production, the long-time running service life of a machine shortens, the consumable accessory premature failure, the maintenance frequency increases, and influences the vibromill operate as normal; Can produce big noise on the other hand, make operator and surrounding enviroment be had a strong impact on or make it to stand as pollution source of noise.
(6) maximization is restricted: the problems referred to above are the difficult problems of puzzlement vibromill development always, more make its maximization or super-hugeization be subjected to serious restriction.
Summary of the invention
The present invention will solve the aforementioned problems in the prior just, on the basis of carrying out a large amount of theory analysises and simulation, invents a kind of general vibromill and super-huge vibromill that becomes rigidity, two plastid, vibrator exciting form that have.
Technical scheme of the present invention is as follows:
Linear helical spring and elemental body structure at aforementioned vibromill, the present invention takes nonlinear variable-stiffness spiral metal rubber coating main vibration spring, the compound isolation spring of variable-stiffness helix metal-rubber and two up and down vibration plastid formulas (being called for short two plastids) structures, the present invention has a cylindrical shell at least, the vibrator parts are rigidly fixed on the cylindrical shell as exciting device, biasing ground carries out exciting one-sided to cylindrical shell, promptly outside the gravity axis of cylindrical shell and center of gravity to its exciting, be balance vibrator quality settings one balanced body, the axle of spring of exciting side is between the gravity axis of cylindrical shell and vibrator parts, drive the vibrator parts, can produce circle by different size, the inhomogeneous vibration oval and the linear combination of vibrations forms, this is that system has the effect that becomes stiffness characteristics, the circle of the feasible mill of the variation of system load Jie oscillation trajectory, oval, rectilinear size has the variation of certain amplitude, and this will help improving the crush efficiency of system.
Motor is a power source among the present invention, and vibrator is an exciting source.They couple together by shaft coupling, shaft coupling can be universal joint, flexible or tyre coupling, and no matter vibrator is located at a left side or right side, its turn to cylindrical shell in the flow direction that is situated between of mill on the contrary, like this could be different with the vibromill that general circle is vibrated, realize rotatablely moving of mill loading.
The advantage that the present invention makes one-sided exciting is, the ellipse of the additional different different sizes constantly that occur and straight-line oscillation are for having important function by the raising rotary speed to improve transport process, and this point has the decision meaning for the effect that grinds.
The present invention becomes the two super-huge vibromills of plastid vibrator formula of rigidity and comprises plastid, following plastid, motor, motor cabinet, shaft coupling, coupling guard, main vibration spring, isolation spring and base, wherein goes up plastid and comprises cylindrical shell, charging aperture, end cap, discharging opening, vibrator, right hitch, mill Jie, left hitch and balance weight body.Link by main vibration spring between the upper and lower plastid, the main vibration spring internal diameter matches with main vibration spring guide pillar external diameter on the upper and lower plastid.
Described cylindrical shell by main vibration spring actively twelve Earthly Branches hold on following plastid, be consolidated with vibrator on the right side of cylindrical shell with right hitch rigidity, the axis of exciting side main vibration spring is between the gravity axis of cylindrical shell and vibrator.Main vibration spring internal diameter and cylindrical shell, the spring guide pillar external diameter on the plastid matches down, plays the purpose that still can make the main vibration spring steady operation under large amplitude; Following plastid is bearing on the base by isolation spring, and the internal diameter of isolation spring matches with the external diameter of isolation spring guide pillar, plays the support guide effect equally.In like manner, be consolidated with the balance weight body that balances each other with the right side quality in the left hitch rigidity of passing on left of cylindrical shell, the axis of left side main vibration spring is between the gravity axis of cylindrical shell and balance weight body.The mill that inner barrel is equipped with the medium ball composition of grinding charge material and different-grain diameter is situated between.Described cylindrical shell is provided with end cap, charging aperture, discharging opening.
During work, motor drives vibrator by shaft coupling and produces exciting force, and then drives cylindrical shell and whole upward plastid generation oscillating movement thereof, because the effect of main vibration spring and shock-absorbing spring, upper and lower plastid is respectively with different amplitudes and acceleration vibration.Obviously, the amplitude and the acceleration of last plastid are bigger, can improve the collision impact breaking capacity of the interior medium of mill tube to material; The amplitude and the acceleration of following plastid are less, can reduce to pass to the dynamic loading on basis more greatly by isolation spring.
Described vibrator comprises exciter shaft, bearing block and left and right inclined to one side piece group.Exciter shaft is installed on the bearing block by bearing, is separately installed with left and right inclined to one side piece group at the exciter shaft two ends, and motor links to each other with exciter shaft by shaft coupling.Coupling guard is equipped with in described shaft coupling outside.
The change stiffness characteristics that the present invention has can obviously reduce the ratio of the weak energy range of cylindrical shell, and then cut down the consumption of energy, improve the capacity usage ratio of vibromill, become stiffness characteristics with two plastids, compared with prior art, can form anti-vibration performance and structural reliability significantly improve, noise obviously reduces, spring-bearing life prolongs greatly resultant effect and technical characterstic, for the further maximization of current super-huge vibromill provides condition.
Below technical characterictic, the enforcement means of the two plastids among the present invention, main vibration spring, isolation spring three elements are described in detail it:
(1) two plastid structures: the two plastids among the present invention can make upper and lower plastid have main to shake, two kinds of mode of vibration isolation, realize different amplitude and vibration acceleration.From inventor's experimental study as can be seen, between last plastid and basis, by plastid down it is separated, can play good vibration isolation effect, this more normally used elemental body vibrational system has the vibration isolating effect that can't compare.
The frequency of vibration isolation mode in the double-mass vibrating grinding system, the frequency more than the main mode of shaking is little usually, and at this moment machine is passed to the dynamic loading reduction on basis, and the vibration of passing to the basis during machine works also will significantly reduce.
Going up plastid among the present invention is the object that itself carries exciting source, because the complexity of the heterogeneous material collision of vibromill system, system constructing has the double-mass vibrating structure of obvious vibration isolating effect, can reduce the probability of system's initiating failure, the stability of raising system running.
(2) main vibration spring: the main vibration spring among the present invention is a variable-pitch screw metal-rubber coating spring, form by metal spiral compression spring and rubber coating coating, the pitch of metal coil spring is the distance of switching political loyalty, can ascending unidirectional array, also can be by bi-directional arrangement broad in the middle small in ends, its characteristic line is cumulative type non-linear line; Rubber adopts the rubber polymer of the natural gum more than 80 percent to be made.
In the main vibration spring owing to constitute the pitch variation of the helical structure of spring, add rubber coating, can make it to have significantly non-linear and required change stiffness characteristics, promptly utilize the characteristics that but Non-Linear Vibration construction system rigidity has to be increased, reduce with load with load, the system drive energy consumption is obviously reduced, realize that system effectiveness increases, the purpose of effectively energy-conservation, steady running.From the power spectrum curve figure of inventor experiment and acceleration time domain curve map as can be seen, the system's output acceleration time domain and the frequency domain variation characteristic that utilize Non-Linear Vibration to bring, can make vibrational system inertia force obviously improve, the time of vibration that reaches same particle sizes shortens dramatically than conventional vibration, operating efficiency significantly increases, and the granularity refinement degree obviously increases.
Metal coil spring plays the support framework effect in the main vibration spring, rubber coating works nonlinear characteristic and the damping and amortization effect that increases spring, can play the effect that improves bearing capacity, increase system stiffness and noise reduction, noise reduction, vibration damping when particularly in system load increase, sudden change or overload doubling-up taking place during work.
(3) isolation spring: the isolation spring among the present invention is a variable-pitch screw metal-rubber complex spring, and it is composited by variable-pitch screw metal spring and rubber spring two parts.The variable-pitch screw metal spring by a steel wire coil around constituting, described steel wire coil coiling structure, be in particular manufacturing craft with vulcanization of rubber clad metal spring surface, form variable-pitch screw metal-rubber complex spring.
The characteristic line of the metal spring in the isolation spring is a non-linear line, plays the support framework effect; The size of pitch can be between each circle and gets different pitches, also can be several circles and is one group and get into several different pitches; Pitch can ascending unidirectional array, also can be by bi-directional arrangement broad in the middle small in ends; Rubber adhesive will increase the nonlinear characteristic and the damping and amortization of spring, utilize nonlinear characteristic can play the effect that improves bearing capacity, cuts down the consumption of energy, the damping and amortization that increases helps preventing the generation of system resonance and flutter, play the vibration insulation and noise reduction effect, can reduce influence to greatest extent Equipment Foundations.
Variable-pitch screw metal-rubber coating spring among the present invention is compared with rubber spring with variable-pitch screw metal-rubber complex spring bigger rigidity, comparing with metal spring has bigger damping and amortization, it is respectively as main vibration spring and isolation spring, its effect is positive, obvious and unique, uses than the occasion of big and load change wider range so be specially adapted to load such as the suspension frame structure of mining machinery, heavy vehicle, super-huge bobbing machine such as super-huge vibromill, vibratory sieve, batcher.
Description of drawings
The invention will be further described below with reference to accompanying drawing:
Concrete structure and embodiment proposed by the invention see accompanying drawing.
Fig. 1 is a vibromill front view of the present invention.
Fig. 2 is the B-B cutaway view of vibromill of the present invention among Fig. 1.
Fig. 3 is the operation principle that vibromill of the present invention is expressed in signal.
Fig. 4 is that signal expression vibromill of the present invention has the form of implementation of a vibrator.
Fig. 5 is the form of implementation that the counterweight of signal expression vibromill of the present invention also adopts vibrator.
The specific embodiment
With reference to accompanying drawing 1-2, become the two super-huge vibromills of plastid vibrator formula of rigidity and comprise cylindrical shell 1, charging aperture 2, end cap 3, shaft coupling 4, coupling guard 5, motor 6, isolation spring 7, base 8, motor cabinet 9, following plastid 10, isolation spring guide pillar 11, main vibration spring 12, main vibration spring guide pillar 13, discharging opening 14, vibrator 15, right hitch 16, mill Jie 17, left hitch 18 and balance weight body 19.Wherein go up plastid and comprise cylindrical shell 1, charging aperture 2, end wall 3, discharging opening 14, vibrator 15, right hitch 16, mill Jie 17, left hitch 18, balance weight body 19.
In the represented structure of accompanying drawing 1-2, link by main vibration spring 12 between the upper and lower plastid 10, main vibration spring 12 internal diameters match with main vibration spring guide pillar 13 external diameters on the upper and lower plastid;
Described vibrator 15 comprises exciter shaft 15-4, bearing block 15-1 and left avertence piece group 15-3, right avertence piece group 15-2.Exciter shaft 15-4, be installed on the bearing block 15-1 by bearing, be separately installed with left avertence piece group 15-3, right avertence piece group 15-2 in exciter shaft 15-4 both sides, motor 6 links to each other with exciter shaft 15-4 by shaft coupling 4.Coupling guard 5 is equipped with in described shaft coupling 4 outsides.Described vibrator 15 is provided with one at least.
Described main vibration spring 12 is a variable-pitch screw metal-rubber coating spring, is applied by metal spiral compression spring and rubber coating to form, and the pitch of metal coil spring is the distance of switching political loyalty.
Described isolation spring 7 is a variable-pitch screw metal-rubber complex spring, and it is composited by variable-pitch screw metal spring and rubber spring two parts.
During work, vibrator 15 drives the whole plastid motion of going up, and sees in conjunction with Fig. 3,4, because one-sided exciting, mill Jie 17 oscillation trajectories are rounded in vibrator 15 place sides in the cylindrical shell 1, through the elliptic vibration at the center, change in the linear vibration of cylindrical shell 1 with vibrator 15 relative sides; Because system becomes the effect of stiffness characteristics, the variation of system load makes circle, ellipse, the rectilinear size of mill Jie oscillation trajectory have the variation of certain amplitude, and this will help improving the crush efficiency of system.
Because the effect of main vibration spring 12 and isolation spring 7, upper and lower plastid are respectively with different amplitudes and acceleration vibration.Obviously, the amplitude and the acceleration of last plastid are bigger, can improve the impact breaking capacity of cylindrical shell 1 interior medium to material; The amplitude and the acceleration of following plastid 10 are less, can reduce to pass to the dynamic loading on basis more greatly by isolation spring 7, base 8.
Accompanying drawing 3 expressions, left side outside vibrator 15 is located at gravity axis and center of gravity also is driven when doing counterclockwise to rotate, mill Jie 17 in the cylindrical shell 1 does clockwise rotation, when vibrator one side grinding Jie does circular whirling vibration, cylindrical shell center and right side are done ellipse, straight-line oscillation respectively, and the distance of the vibrator axis parallel with tubular axis is greater than the minimum range between cylindrical shell mid point and the cylinder inboard wall.
To compare the advantage that has as follows with the vibromill prior art:
The present invention becomes the one-sided exciting of doing of stiffness characteristics, and the ellipse of the additional different different sizes constantly that occur and straight-line oscillation are for having important function by the raising rotary speed to improve transport process, and this point has the decision meaning for the effect that grinds;
The change stiffness characteristics that the present invention has can reduce the ratio of the weak energy range of cylindrical shell, and then cuts down the consumption of energy, and improves the capacity usage ratio of vibromill;
The master that the present invention has shakes, the change stiffness characteristics of isolation spring is with two plastid structures, comprehensive formation than the technical characterstic that the prior art anti-vibration performance is good, structural reliability is high, noise is little, spring-bearing life is long is for the further maximization of general vibromill or super-huge vibromill now provides condition.
Can connect into the different grinding machine of length with having the identical tube structure unit of diameter, to satisfy different grinding the operation and the time of staying, this just makes modularized design become possibility.
Below introduce four kinds of embodiment of the present invention, wherein main vibration spring, isolation spring are identical with two plastid structures, repeat no more:
Accompanying drawing 4 schematically illustrates a kind of form of implementation, it has a grinding machine container that can support quiveringly, for reaching the super-huge vibromill cylindrical shell 1 of 1.8 meters of diameters, its side is rigidly connected with a secondary movable pendulum vibrator 15 outside gravity axis and center of gravity this container in form.The balance of secondary movable pendulum vibrator quality by one be located at cylindrical shell opposite side axis with it the balance weight body 19 of balance finish.Described balance weight body 19 adopts the built-in block case structure, is consolidated in the cylindrical shell left side with left hitch 18 rigidity, realizes the balance with the right side quality.
Accompanying drawing 5 is forms of implementation that the counterweight employing vibrator of vibromill of the present invention is expressed in signal.Be the balance weight body 19 on cylindrical shell 1 right side, substitute it with second vibrator and drive system 20 thereof.Vibromill can be selected or be driven by vibrator 15 or vibrator 20, and at this moment, another vibrator (20 or 15) always plays balance mass.This version allows the work of vibrating mill to have different vibrator parameters, as rotating speed and vibration diameter of a circle.
Claims (7)
1. one kind becomes the two super-huge vibromills of plastid vibrator formula of rigidity, it is characterized in that comprising plastid, following plastid, motor, motor cabinet, shaft coupling, coupling guard, main vibration spring, isolation spring and base, wherein go up plastid and comprise cylindrical shell, charging aperture, end cap, discharging opening, vibrator, right hitch, mill Jie, left hitch and balance weight body; Link by main vibration spring between the upper and lower plastid, the main vibration spring internal diameter matches with main vibration spring guide pillar external diameter on the upper and lower plastid;
Described cylindrical shell by main vibration spring actively twelve Earthly Branches hold on following plastid, right side at cylindrical shell is consolidated with vibrator with right hitch rigidity, the axis of exciting side main vibration spring is between the gravity axis of cylindrical shell and vibrator, and the internal diameter of main vibration spring matches with the external diameter of its main vibration spring guide pillar; Following plastid is bearing on the base by isolation spring, the internal diameter of isolation spring matches with the external diameter of isolation spring guide pillar, be consolidated with the balance weight body that balances each other with the right side quality in the left hitch rigidity of passing on left of cylindrical shell, the axis of the main vibration spring in left side is between the gravity axis of cylindrical shell and balance weight body, and the mill that inner barrel is equipped with the medium ball composition of grinding charge material and different-grain diameter is situated between.
2. the two super-huge vibromills of plastid secondary movable pendulum vibrator formula of change rigidity according to claim 1, it is characterized in that described vibrator comprises exciter shaft, bearing block, left avertence piece group and right avertence piece group, exciter shaft is installed on the bearing block by bearing, be separately installed with left avertence piece group, right avertence piece group at the exciter shaft two ends, motor links to each other with exciter shaft by shaft coupling.
3. the two super-huge vibromills of plastid vibrator formula of change rigidity according to claim 1 is characterized in that described shaft coupling outside is equipped with coupling guard.
4. the two super-huge vibromills of plastid vibrator formula of change rigidity according to claim 1 is characterized in that described cylindrical shell is provided with end cap, charging aperture and discharging opening.
5. the two super-huge vibromills of plastid vibrator formula of change rigidity according to claim 1, it is characterized in that described main vibration spring is a variable-pitch screw metal-rubber coating spring, formed by metal spiral compression spring and rubber coating coating, the pitch of metal coil spring is the distance of switching political loyalty.
6. the two super-huge vibromills of plastid vibrator formula of change rigidity according to claim 1 is characterized in that described isolation spring is a variable-pitch screw metal-rubber complex spring, and it is composited by variable-pitch screw metal spring and rubber spring two parts.
7. the two super-huge vibromills of plastid vibrator formula of change rigidity according to claim 1 is characterized in that described vibrator is provided with one at least.
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Cited By (7)
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| CN103934195A (en) * | 2014-05-09 | 2014-07-23 | 王建喜 | Double-body vibration exciter |
| CN104209173A (en) * | 2014-09-07 | 2014-12-17 | 李彦 | A two-mass near-resonance crushing (grinding) machine |
| CN104941764A (en) * | 2015-06-29 | 2015-09-30 | 江苏新鹏重型机电制造有限公司 | Three-mass asymmetric vibrating mill |
| CN104984805A (en) * | 2015-08-05 | 2015-10-21 | 南京工程学院 | Dual-frequency excitation double-mass vibration mill |
| CN106503332A (en) * | 2016-10-21 | 2017-03-15 | 福州大学 | A kind of miniature pile foundation soil dynamic response method for solving for introducing nonlinear spring |
| CN107096614A (en) * | 2017-07-03 | 2017-08-29 | 南京工程学院 | Simultaneously coil spring is not ground convexity with the side-mounted double-mass vibrating of hybrid density medium |
| CN108745460A (en) * | 2018-05-09 | 2018-11-06 | 王建喜 | Double-mass vibrating crusher |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103934195A (en) * | 2014-05-09 | 2014-07-23 | 王建喜 | Double-body vibration exciter |
| CN104209173A (en) * | 2014-09-07 | 2014-12-17 | 李彦 | A two-mass near-resonance crushing (grinding) machine |
| CN104209173B (en) * | 2014-09-07 | 2017-03-08 | 李彦 | A kind of double mass Near resonance oscillating breaks grinding machine |
| CN104941764A (en) * | 2015-06-29 | 2015-09-30 | 江苏新鹏重型机电制造有限公司 | Three-mass asymmetric vibrating mill |
| CN104984805A (en) * | 2015-08-05 | 2015-10-21 | 南京工程学院 | Dual-frequency excitation double-mass vibration mill |
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Application publication date: 20110202 |