CN107199083A - Simultaneously coil spring double-mass vibrating is not ground convexity - Google Patents
Simultaneously coil spring double-mass vibrating is not ground convexity Download PDFInfo
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- CN107199083A CN107199083A CN201710534515.3A CN201710534515A CN107199083A CN 107199083 A CN107199083 A CN 107199083A CN 201710534515 A CN201710534515 A CN 201710534515A CN 107199083 A CN107199083 A CN 107199083A
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- Prior art keywords
- spring
- vibrating
- isolation
- plastid
- ground
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
Abstract
The present invention is that simultaneously coil spring double-mass vibrating is not ground convexity, including main vibrating system and vibrating isolation system, main vibrating system includes being used as the vibrating motor of exciting source and the mill tube being fixed together with the vibrating motor by Frequency Converter Control, vibrating motor, mill tube and the upper plastid of upper plastid plate composition, one end of lower plastid is connected with main vibration spring group, and lower plastid is connected by the main vibration spring group with vibrating isolation system；Vibrating isolation system includes the isolation spring being connected with the lower plastid other end, and isolation spring is connected by base with ground.The present invention have that ultramicro powder refinement, mill efficiency be high, capacity usage ratio is high and effectively accumulation of energy, energy-conservation, steady running, significantly reduce the features such as noise, vibration isolating effect are good.
Description
Technical field
For material fining powder the milling equipment prepared is vibrated the present invention relates to a kind of, be a kind of there is middle convex not simultaneously
Coil spring monotubular double-mass vibrating is ground, and belongs to vibration using the interdisciplinary science technology with powder technology.
Background technology
Vibromill is the vibrating mechanical equipment that material fining grinding operation is completed using vibration principle, existing superfine powder
In technology of preparing, vibromill is with other preparation methods if any gas phase synthesis method, liquid phase synthesizing method, comminution by gas stream, roller mill method
Etc. comparing, with the advantage, existing vibromill branch such as mechanical mass activity is big, purification is convenient, cost is low, simple in construction, efficiency is high
Support spring and typically use line style equal pitch helical spring；Body is generally elemental body structure.
The elemental body structure of vibromill, shows between the vibration plastid and base that are made up of cylinder and vibrator, is to pass through
Spiral compression spring is connected, the vibration that vibration plastid is produced, and ground can be directly acted on by spring pedestal, is produced larger with making an uproar
Sound, therefore it is larger to consume energy.In recent years, or the research report that there is double-mass vibrating to grind, but due to double-mass vibrating mill be related to it is main every
Vibrating system is designed, and its structure is relative complex, cost is higher, therefore practical application person is few.
In Practical Project, the parameter such as vibrational system quality, exciting force, damping force is mostly change person, such as vibromill
Medium, the mill of grinding charge material formation of system in itself are situated between and flowed, and constantly throw, fall in motion process, and actually one
Nonlinear change can also occur wherein for the process of individual complicated mass change, damping, and the bias of the inclined block formation of vibrating motor swashs
Power of shaking is change with the change of corner non-linear, and vibration grinding system is actually a typical nonlinear system, is
One has the strong nonlinear vibration system for determining excitation and uncertain response.
The load character curve for the equal pitch helical spring that existing vibromill is generally used is linear line, to wait stiffness helix
Spring, does not account for the actual condition of mission nonlinear, such as jigging conveyer, vibrating scalper, vibrating mill, due to motion shape
The system load moment is all in change under state, therefore the stiffness helix spring such as uses, though there is simple in construction, low cost and other advantages, so deposits
Noise is big, power consumption is high, efficiency is low, the maintenance frequency is high, equipment life low problem.
Normal spiral spring is linear characteristic wire spring, and its load is linear with deforming；Variable-pitch screw spring is then
For nonlinear characteristic wire spring, its load is in non-linear relation with deformation, and with special performance, the load of all of which reaches
After to a certain degree, the stress in material section is changed along the length of material.Therefore, the size of material will be according to maximum
Stress is determined；The height or length of spring will be determined according to deformation required after stand under load.
Normal linear spring can not realize variation rigidity, then can not realize the vibration coupling with above-mentioned complex vibration system or association
Vibration is adjusted, thus efficiency is low, energy consumption is big, noise is big.How so that the change of vibrational system rigidity and elastic force, with its in system
The active force that it varies goes to realize vibration coupling, to reach the purpose of efficient energy-saving, be one be worth discussion the problem of, this hair
The introducing of bright variable-pitch spring, the need for exactly this research.
Recent domestic experts and scholars are inquiring into the solution of above mentioned problem always, though there is non-linear variable-pitch screw
The application report of metal spring, but the problem of noise is bigger when still suffering from noise big, doubling-up, used in nonlinear vibration motivation,
Easily there is short life, repair the problems such as frequency is high, cost is high.
In summary, while overcoming the new grinding machine with efficient energy-saving of above mentioned problem to be not yet suggested so far.
The content of the invention
The present invention provides a kind of middle convex not simultaneously coil spring single barrel vibrating mill, with double mass technical characteristic, main vibration spring
For middle convex not simultaneously coil spring, isolation spring is canvas rubber-spring complex, and master-isolation spring is variation rigidity, with it is existing extensively
The general common single vibration grinding machine used is compared, with obvious efficiency high, noise is small the features such as, it is intended to effectively solve existing shake
All the time, pendent noise is big, the low technical bottleneck problem of efficiency for dynamic mill.
The monotubular double-mass vibrating mill of the present invention takes following technology to realize：
The present invention is that simultaneously coil spring double-mass vibrating is not ground convexity, including main vibrating system and vibrating isolation system,
The main vibrating system is included by the as the vibrating motor of exciting source and solid with the vibrating motor of Frequency Converter Control
It is scheduled on mill tube together, the vibrating motor, the mill tube and the upper upper plastid of plastid plate composition, one end of lower plastid and master
Groups of springs of shaking is connected, and the lower plastid is connected by the main vibration spring group with vibrating isolation system；
Vibrating isolation system includes the isolation spring being connected with the lower plastid other end, and the isolation spring passes through base and ground phase
Even；
Main vibration spring group is made up of several middle convex not doubling-up helical springs, and each spring is formed by a steel wire coil around structure,
Steel wire is wound into convexity type helical structure, and middle convex not doubling-up helical spring at least 4 encloses the effective helix angle of the above, and effectively spiral shell
The central diameter of rotation is equal pitch spiral, and spiral central diameter is typically distributed in Rearrangments from the middle to both ends.
Further improvement of the present invention is：Middle convex not doubling-up helical spring is in vibromill along vertical with electric machine main shaft
Several rows are put in direction, are placed several rows along with electric machine main shaft parallel direction, are constituted the uniform state of spring.
Further improvement of the present invention is：Isolation spring is the composite vibration isolation that for example rubber duck composite is made
Spring.
Further improvement of the present invention is：The mill tube medium is two or more different proportioning.
Double-mass vibrating mill of the present invention is mainly made up of main vibrating system and vibrating isolation system, vibrating motor in main vibrating system
As exciting source, the purpose for becoming exciting force can be reached by Frequency Converter Control, what is be fixed together with vibrating motor is mill tube,
Both constitute upper body portion together, and lower plastid one end is connected with main vibration spring, is connected by main vibration spring with vibrating isolation system；
In vibrating isolation system, the other end is connected with isolation spring, and isolation spring is connected by fixed bottom plate with ground, after energization, by frequency conversion
Device controls vibrating motor, and to change exciting force, vibrating motor makees approximate circle vibration with mill tube so that mill, which is situated between, in mill tube produces
Life is mutually moved, so, and cylinder is interior and sticks to the mesh that the powder ground on Jie and barrel reaches grinding due to shock, friction
, the double-mass vibrating mill can significantly reduce vibromill main body by two groups of springs of main vibration spring group and isolation spring
The oscillation intensity and noise produced to ground, and reached the effect of energy-conservation.Because isolation spring and ground pass through fixed bottom plate
It is connected, moving horizontally for vibrating mill can be prevented.
The main vibration spring group of grinding machine of the present invention is made up of some middle convex not doubling-up helical springs, wherein each spring
Formed by a steel wire coil around structure, described steel wire is wound into middle convex helical structure, middle convex spring according to design data
The Parameters variation such as design visible system quality, exciting force be designed, it is more than the middle circle of convex not doubling-up helical spring at least 4
Effective helix angle, and effective helix angle effective pitch be equal pitch spiral, spiral central diameter is general in symmetrical from centre to two ends
Successively decrease distribution.
The load envnlope line of the middle convex not doubling-up helical spring is cumulative type non-linear line, and be it is continuous or point
Section is continuous, and this is conducive to preventing the generation of its resonance and flutter；Due to the change of central diameter, in identical steel wire diameter same pitch
In the case of, decrement during adjacent two steel wires doubling-up, middle convex spring is big compared with common spring.
The spring design of vibrational system, did not almost account for the factor of not doubling-up, both due to traditional design so far
Limitation, it is more and calculate numerous and diverse to there are influence not doubling-up associated technical parameters again, thus not only noise is big for system, and energy consumption
High, efficiency is low.According to the design feature of this spring, it is considered to the condition of not doubling-up, can be achieved grinder system main vibration spring not simultaneously
Circle, the noise zero that can produce spring doubling-up.
Due to the central diameter change of the helical structure of convex not doubling-up helical spring in composition, there is the present invention obvious non-
Linear and required variation rigidity feature, i.e., the system stiffness that spring of the present invention is constituted has the variation rigidity increased and decreased with loads increasing or decreasing
Feature, makes the effective accumulation of energy of system, energy-conservation, steady running, significantly reduces the purpose of noise to reach.
The middle convex not doubling-up helical spring group formula double-mass vibrating mill, middle convex not doubling-up helical spring is in vibromill
Middle edge puts multiple rows of with electric machine main shaft vertical direction, places some rows along with electric machine main shaft parallel direction, constitutes the uniform state of spring,
So that vibromill preferably works.
In the present invention, isolation spring can be made of rubber duck composite, and lower plastid passes through isolation spring and base
It is connected with ground, because isolation spring has hard nonlinear characteristic, its rigidity has the characteristics of changing with load change, therefore subtracts
Effect of shaking is good, can obtain preferable noise reduction, and the effect of firm banking mainly prevents the movement in vibromill horizontal direction
Obtain play.
The beneficial effects of the invention are as follows：Vibrating mill of the present invention is compared with common elemental body grinding machine, due to master
Vibrating isolation system, on the one hand can bear bigger exciting force, on the other hand can effectively reduce vibration effect of the vibrating mill to ground,
Reach good energy-saving effect；The rigidity of the middle convex spring and rubber spring can with grinder system maximum load change
And change, can not only have accumulation of energy, the effect of energy-conservation, and necessary condition is provided for the coupled vibrations of main vibration isolation, main vibration spring
Not doubling-up under possible maximum load so that system noise is significantly reduced and dynamic stability is greatly increased, and overall efficiency is bright
Aobvious lifting；In the case of hybrid density medium size composition optimal design-aside, compared with existing grinder system, from this angle of Media density
Degree examination, it is even more apparent to improve the advantages such as high, the reduction energy consumption of system effectiveness.
The effect of the present invention is positive, obvious and unique, and it has ultramicro powder refinement, mill efficiency height, energy profit
With rate it is high and effectively accumulation of energy, energy-conservation, steady running, significantly reduce the features such as noise, vibration isolating effect are good.The above-mentioned skill of the present invention
Art, effectively solving the problems, such as existing vibromill pendent energy consumption is big all the time, in the low technical bottleneck of efficiency, will be realized
The step crossed over.
Brief description of the drawings
Fig. 1 is convex not simultaneously coil spring monotubular double-mass vibrating mill structural representation in the embodiment of the present invention.
Fig. 2 is convex not doubling-up helical spring structure schematic diagram in the embodiment of the present invention.
Fig. 3 is convex spring adjacent turn not doubling-up schematic diagram in the embodiment of the present invention.
Fig. 4 is convex not doubling-up helical spring component Butut in the embodiment of the present invention.
Embodiment
In order to deepen the understanding of the present invention, present invention work is further retouched in detail below in conjunction with drawings and examples
State, the embodiment is only used for explaining the present invention, protection scope of the present invention is not constituted and limited.
Be vibration milling machine structure sketch of the present invention shown in Fig. 1, mainly by mill tube 1, upper plastid plate 2, lower plastid 3, bottom plate 4,
Shock insulation spring 5, main vibration spring 6, vibrating motor 7 etc. are constituted, and cylinder is built with grinding charge material and powder grinding medium, its packing factor
65% is set to, mill tube medium is abrasion-proof steel ball, wolfram steel ball, and two kinds of mill betweenness amount ratios are 6:4, a diameter of 2 mm of mill tube medium,
3.5 mm, 5 mm, 6.5mm, grinding machine vibration frequency are 960 rpm, survey amplitude<20mm, shakes strong<18.
It is mainly old to left avertence block portion point because the structure of vibrating motor or so block portion point partially is full symmetric on central plane
State, right avertence block portion point is identical with left avertence block some embodiments；Due to symmetry, during motion or so partially block portion point easily realize it is same
Step, occasionally there is nonsynchronous situation in short-term, because rotor axis of electric has enough rigidity and intensity, therefore the axial moment of couple produced
Completely in system tolerance range.The present invention be mainly characterized by exciting force, amplitude, frequency, shake the parameter variation range such as strong compared with
Greatly, its size, action time can be control effectively by frequency converter.
As shown in figure 1, the upper plastid of vibration direct drive and mill tube produced during each inclined block rotation on vibrating motor, mill tube
Built with medium and material, vibration makes in mill tube mill be situated between to produce material collision, impact, shearing, extruding and rubbing with the hands and grind, reach to thing
Material progress crushing and the purpose of fine grinding, the level that Jie is ground by adjusting the angle of the inclined block of major-minor, change match somebody with somebody selection, implementation VFC
Deng measure, certain frequency high amplitude, Gao Zhenqiang vibration crushing effect needed for can producing.
Grinding machine of the present invention is made up of plastid and main vibrating isolation system up and down, forms double mass, upper plastid it is main by upper plastid plate,
There is mill to be situated between and powder in vibrating motor, mill tube consolidation composition, cylinder, be connected up and down between plastid with main vibration spring group；Lower plastid
Plastid frame is descended, lower to be connected between plastid and base with isolation spring, base is with ground with bolt group concrete mutually, working condition
Under, by Frequency Converter Control vibrating motor, change exciting force by changing transient state rotational frequency, and then change amplitude, shake strong become
Change curve, reach the purpose of efficient grinding.
The present invention is from the medium size composition of two kinds of different densities, i.e. wolfram steel, abrasion-resistant stee, in the throwing of grinding process, collides
During, because its density of material differs about 2 times, then cause that mill in cylinder is situated between involve, relative velocity and involve, relative acceleration
Deng motion value increase severely, due to greatly improving for impact energy, then generate raising mill efficiency, reduction smashing fineness,
Reduce the multi-effect of noise.
As shown in Fig. 2 middle convex not doubling-up helical spring by a steel wire coil around constituting, described steel wire coil by design around
Into middle convex helical structure, the Parameters variation such as design visible system quality, exciting force of middle convex spring is improved, middle convex
Not doubling-up helical spring at least 4 encloses the effective helix angle of the above, and the effective pitch of effective helix angle is the spiral of equal pitch, spiral
Central diameter is from centre to two ends Rearrangments.
The load envnlope line of the spring is cumulative type non-linear line, and is continuous or zonal cooling：This is conducive to
Prevent the generation of its resonance and flutter；The big I of pitch is that different pitches are taken between each is enclosed, or a few circles are one group
Take into several different pitches；Pitch can ascending unidirectional array, also can be by bi-directional arrangement broad in the middle small in ends.
The pitch of middle convex not doubling-up helical spring is identical, and spiral central diameter is from centre to two ends Rearrangments.Middle convex is not
Doubling-up helical spring plays support framework, with good nonlinear characteristic and damping and amortization, is particularly carried during work in system
Lotus increases, is mutated or can played when overloading and occurring doubling-up raising bearing capacity, increase system stiffness and noise reduction, noise reduction, vibration damping
Effect.
Fig. 3 is middle convex spring adjacent turn not doubling-up schematic diagram, from the figure 3, it may be seen that convex spring is in axis direction in this
Position circle is symmetrical above and below, then middle position loop diameter is maximum and rigidity is minimum, therefore easily doubling-up, if its radius is R, as long as then controlling in theory
Spring is in maximum axialUnder effect, spring middle position circle and the cylindrical normal distance of neighbouring coil spring>, i.e.,
The not doubling-up of whole motion process can be achieved.If known spring wire diameter, the rigidity of spring middle position circle, spring axial direction spiral shell
Away from, then rigidityIt should meet
（1）
ForThe minimum axial direction pitch of the lower middle position spring not doubling-up of effect, if setting=0.1, then have, it is defined as the maximum allowable load of spring not doubling-up.By Tu Ke get。
Then have（2）
With formula（1）Simultaneous, can be obtained
Thus the not doubling-up of grinder system main vibration spring can be realized.
The distribution situation of convex not doubling-up helical spring group in shown in Fig. 4, middle convex not doubling-up helical spring is in vibromill
Two rows are put in middle edge with electric machine main shaft vertical direction, place 3 rows along with electric machine main shaft parallel direction, constitute 6 uniform states of spring,
So as to vibromill more good berth, position 1-6 is placement location of the spring in vibromill in Fig. 4.
Rubber duck composite isolation spring this example selects crate tire, and experiment is proved and General Purpose Rubber spring, gold
Category spring, metal-rubber spring are compared, and its vibration isolating effect is considerably better, and not only vibration absorbing performance is good, noise is low and simple in construction,
Good economy performance, with very high cost performance.
Claims (4)
- Simultaneously 1. coil spring double-mass vibrating is not ground convexity, including main vibrating system and vibrating isolation system, it is characterised in that：The main vibrating system is included by the as the vibrating motor of exciting source and solid with the vibrating motor of Frequency Converter Control It is scheduled on mill tube together, the vibrating motor, the mill tube and the upper upper plastid of plastid plate composition, one end of lower plastid and master Groups of springs of shaking is connected, and the lower plastid is connected by the main vibration spring group with vibrating isolation system；The vibrating isolation system includes the isolation spring being connected with the lower plastid other end, and the isolation spring passes through base and ground Base is connected；The main vibration spring group is made up of several middle convex not doubling-up helical springs, each spring by a steel wire coil around structure and Into steel wire is wound into convexity type helical structure, and middle convex not doubling-up helical spring at least 4 encloses the effective helix angle of the above, and has The central diameter for imitating spiral is equal pitch spiral, and spiral central diameter is typically distributed in Rearrangments from the middle to both ends.
- 2. simultaneously coil spring double-mass vibrating is not ground convexity according to claim 1, it is characterised in that：The middle convex not doubling-up Helical spring puts several rows in vibromill along with electric machine main shaft vertical direction, is placed several rows along with electric machine main shaft parallel direction, structure Into the uniform state of spring.
- 3. simultaneously coil spring double-mass vibrating is not ground convexity according to claim 1, it is characterised in that：The isolation spring is multiple The isolation spring that condensation material is made.
- 4. simultaneously coil spring double-mass vibrating is not ground convexity according to claim 1, it is characterised in that：The mill tube medium is two Plant or two or more different proportionings.
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| CN201710534515.3A CN107199083A (en) | 2017-07-03 | 2017-07-03 | Simultaneously coil spring double-mass vibrating is not ground convexity |
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Application publication date: 20170926 |