CN107138237A - Simultaneously coil spring is not ground convexity with hybrid density medium double-mass vibrating - Google Patents
Simultaneously coil spring is not ground convexity with hybrid density medium double-mass vibrating Download PDFInfo
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- CN107138237A CN107138237A CN201710533319.4A CN201710533319A CN107138237A CN 107138237 A CN107138237 A CN 107138237A CN 201710533319 A CN201710533319 A CN 201710533319A CN 107138237 A CN107138237 A CN 107138237A
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- spring
- vibrating
- isolation
- plastid
- doubling
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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
- B02C17/10—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 with one or a few disintegrating members arranged in the container
-
- 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
- B02C19/00—Other disintegrating devices or methods
- B02C19/16—Mills provided with vibrators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention is that simultaneously coil spring is not ground convexity with hybrid density medium double-mass vibrating, 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, the vibrating motor, the mill tube and the upper upper plastid of plastid plate composition, one end of lower plastid is connected with main vibration spring group, 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 is connected by base with ground；The 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.There is ultramicro powder refinement, de-agglomerated, powder product to be distributed that band narrows, energy consumption is low, mill efficiency is high, capacity usage ratio is high and effective accumulation of energy, energy-conservation, steady running, the features such as noise, vibration isolating effect are good is significantly reduced by the present invention.
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, medium are the monotubular double-mass vibrating mill that hybrid density is matched, and belong to vibration using the interdisciplinary science with powder technology
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；Its medium generally uses isodensity medium, and such as abrasion-resistant stee, zirconium oxide are single
One density medium；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, and, such as jigging conveyer, vibrating scalper, vibrating mill mostly non-linear in the actual condition of Vibration Using Engineering, by
In the system load moment under motion state all in change, therefore the stiffness helix spring such as use, though there is simple in construction, cost low excellent
Point, but there is low big noise, power consumption height, efficiency, maintenance frequency height, equipment life low problem.
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, and simultaneously coil spring, hybrid density medium monotubular double-mass vibrating are not ground, with double matter
Body technique feature, main vibration spring is middle convex not simultaneously coil spring, and isolation spring is rubber duck complex spring, master-isolation spring
It is variation rigidity；It is to improve impact of the mill Jie's ball in relative motion, extruding, shearing, the energy of collision in cylinder, implementation mixes close
Spend medium size composition optimal design-aside, compared with existing widely used common single vibration grinding machine system, with obvious efficiency high,
The features such as noise is small, it is intended to effectively solve existing vibromill all the time, pendent noise is big, the low technical bottleneck of efficiency
Problem.
The Novel monotubular double-mass vibrating mill of the present invention takes following technology to realize：
The present invention is that simultaneously coil spring is not ground convexity with hybrid density medium double-mass vibrating, 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；
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, and each spring is by a steel wire coil around structure
Form, steel wire is wound into convexity type helical structure, 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, and spiral central diameter is typically distributed from centre to two ends in Rearrangments.
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：The isolation spring is composite as rubber duck composite is made
Isolation 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 plastid together with upper plastid plate, and lower plastid one end is connected with main vibration spring, passes through main vibration spring and vibrating isolation system
It is connected；In vibrating isolation system, the other end is connected with isolation spring, and isolation spring is connected by base 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
, double-mass vibrating mill can significantly reduce vibromill main body over the ground by two groups of springs of main vibration spring group and isolation spring
Oscillation intensity and noise that base is produced, and the effect of energy-conservation has been reached, isolation spring is installed between lower plastid and base, base
With ground by bolt group concrete mutually, 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, steel wire is wound into middle convex helical structure, the design of middle convex spring according to design data
The Parameters variations such as visible system quality, exciting force are designed, more than the middle circle of convex not doubling-up helical spring at least 4 effective
Spiral, and the effective pitch of effective helix angle is the spiral of equal pitch, spiral central diameter is general in Rearrangments point from centre to two ends
Cloth.
The load envnlope line of middle convex not doubling-up helical spring is cumulative type non-linear line, and is continuous or segmentation company
Continuous, this is conducive to preventing the generation of its resonance and flutter；Due to the change of central diameter, in the feelings of identical steel wire diameter same pitch
Under condition, decrement during adjacent two steel wires doubling-up, middle convex spring is big compared with common spring；According to the design feature of this spring,
Consider the condition of not doubling-up, the not doubling-up of grinder system main vibration spring can be achieved, 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.
Middle convex not doubling-up helical spring group formula double-mass vibrating mill, middle convex not doubling-up helical spring edge in vibromill
Put multiple rows of with electric machine main shaft vertical direction, place some rows along with electric machine main shaft parallel direction, constitute the uniform state of spring, so as to
Vibromill preferably works.
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, the condition of not doubling-up is analyzed and studied in present invention research from working mechanism,
The not doubling-up of main vibration spring in the grinder system course of work can be achieved, the noise zero for producing spring doubling-up.
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, the purpose of firm banking, which is mainly, prevents vibromill in the horizontal direction in face
Movement.
Vibromill is to utilize the vibration for vibrating mill tube generation certain frequency so that the medium such as ball or rod in cylinder produces inertia
Power completes to impact and crushes grinding charge material, and the acceleration of mill tube vibration is general up to 6g-12g, thus with compact conformation,
Small volume, lightweight, properties of powder performace concentration, process simplification, the advantages of simple to operate, easy to maintenance, liner plate Medium Replacement is easy,
It can be widely used for the industry powder such as metallurgy, building materials, mine, fire resisting, chemical industry, glass, ceramics, graphite.
The medium that existing vibromill technology is used, size can pass through experiment or numerical simulation according to different material
It is compared, to determine optimum gradation, it is substantially single density medium that its right density, which is chosen, typically using forged steel, wear-resisting
Steel, wear resistant cast iron, high chrome, middle chromium steel, zirconium oxide etc., its shape can be spherical or round bar shape, but mill tube to be further added by and
Acceleration during media impingement material, single density medium is almost helpless, and appropriate selection two or more not
With the medium size composition of density, such as wolfram steel, abrasion-resistant stee, in the throwing of grinding process, collision process, due to its density of material difference
About 2 times, then cause that mill in cylinder is situated between involve, relative velocity and involve, the motion value such as relative acceleration increases severely, and necessarily causes it
Impact energy is greatly improved, as the necessary condition for improving mill efficiency.
The realization of hybrid density media technology main points, can reach generation impact, shearing, extruding etc. in grinding operation a variety of
The Practical Project effect of the combining ability effect of power, some work barrier for overcoming vibrating machine solve vibrating machine special
It is some key technologies of vibromill or the bottleneck problem of restriction development, such as solves ultramicro powder in vibromill and do not refine, easily roll into a ball
Gather, powder product distribution band is big compared with wide and energy consumption, mill efficiency is low, the low problem of capacity usage ratio, and then realize material
Ultra-fine or ultramicro grinding, reduction energy consumption, raising efficiency, with significant engineering effort, economic and social benefit, due to high density
Medium is using the financial cost for causing grinding machine exciting power slightly to be lifted, compared with the economic benefit that the present invention is produced, for chasing after
The target of high-quality powder is asked to can be ignored substantially.
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 abundant condition is provided for the coupled vibrations of main vibration isolation, main vibration spring
Not doubling-up under maximum load so that system noise is significantly reduced and dynamic stability is greatly increased, overall efficiency is substantially carried
Rise；In the case of hybrid density medium size composition optimal design-aside, compared with existing grinder system, from Media density, this angle is examined
Core, 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, de-agglomerated, powder product point
Strap narrows, energy consumption is low, mill efficiency is high, capacity usage ratio is high and effective accumulation of energy, energy-conservation, steady running, significantly reduces and makes an uproar
The features such as sound, vibration isolating effect are good.The above-mentioned technology of the present invention, is effectively solving existing vibromill pendent energy all the time
Consume in big, the low technical bottleneck problem of efficiency, the step crossed over will be realized.
Brief description of the drawings
Fig. 1 is vibromill structural representation of 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, the present invention is done below in conjunction with drawings and examples and further retouched in detail
State, the embodiment is only used for explaining the present invention, protection scope of the present invention is not constituted and limited.
It is vibration milling machine structure sketch of the present invention shown in Fig. 1, mainly by mill tube 1, upper plastid, 2, lower plastid 3, bottom plate 4,
Isolation spring 5, main vibration spring 6, the grade of vibrating motor 7 is constituted, in the present embodiment, and cylinder is situated between built with grinding charge material and grinding
Matter, its packing factor is set to 65%, and it is abrasion-proof steel ball and wolfram steel ball that mill, which is situated between, and two kinds of mill betweenness amount ratios are 6:4, mill Jie a diameter of 2
Mm, 3.5 mm, 5 mm, 6.5mm, material are superhard fine powder body, and grinding machine vibration frequency is 1450 rpm, surveys amplitude<22mm,
Shake strong<20.
Because the structure of vibrating motor or so block portion point partially is full symmetric on central plane, thus it is main in embodiment
Will be to left avertence block portion point statement, right avertence block portion point is identical with left avertence block some embodiments；Due to symmetry, during motion or so partially
Block portion point is easily realized synchronously, occasionally there is nonsynchronous situation in short-term, because rotor axis of electric has enough rigidity and intensity, therefore is produced
The raw axial moment of couple is completely in system tolerance range.The present invention be mainly characterized by exciting force, amplitude, frequency, shake it is strong etc.
Parameter variation range is big, and 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 powder, vibration makes the mill such as steel ball in mill tube be situated between to produce material collision, impact, shearing, extruding and rubbing with the hands and grind,
Reach material is crushed and fine grinding purpose.Selection, implementation are matched somebody with somebody by the level for adjusting the angle of the inclined block of major-minor, change mill is situated between
The measures such as VFC, 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
It is connected between base with isolation spring, base and ground under working condition, are shaken by Frequency Converter Control with bolt group concrete mutually
Dynamic motor, changes exciting force by changing transient state rotational frequency, so change amplitude, shake strong change curve, reaches efficient powder
The purpose of mill.
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, and 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 processed is in maximum axialUnder effect, spring middle position circle and the cylindrical normal distance of neighbouring coil spring>,
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
Pitch, 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, and position 1-6 is placement location of the spring in vibromill, and edge is parallel with electric machine main shaft
3 rows are placed in direction, constitute 6 uniform states of spring, with
Just mill tube can normally complete vibratory milling work.
Isolation spring this example select rubber duck composite crate tire, experiment prove with General Purpose Rubber spring,
Metal spring is 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, tool
There is very high cost performance.
Claims (4)
- Simultaneously 1. coil spring is not ground convexity with hybrid density medium double-mass vibrating, including main vibrating system and vibrating isolation system, its feature It is：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, and each spring is by a steel wire coil around structure Form, steel wire is wound into convexity type helical structure, 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, and spiral central diameter is typically distributed from centre to two ends in Rearrangments.
- 2. simultaneously coil spring is not ground convexity with hybrid density medium double-mass vibrating according to claim 1, it is characterised in that：In Convex not doubling-up helical spring puts several rows in vibromill along with electric machine main shaft vertical direction, and edge is put with electric machine main shaft parallel direction Put several rows, constitute the uniform state of spring.
- 3. simultaneously coil spring is not ground convexity with hybrid density medium double-mass vibrating according to claim 1, it is characterised in that：Institute It is the isolation spring that composite is made to state isolation spring.
- 4. simultaneously coil spring is not ground convexity with hybrid density medium double-mass vibrating according to claim 1, it is characterised in that：Institute Mill tube medium is stated for two or more different proportioning.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029130A (en) * | 2020-11-06 | 2022-02-11 | 江苏清联光电技术研究院有限公司 | Ring spring type resonance mill |
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