CN207056694U - Hybrid density medium ball double mass single barrel vibrating mill - Google Patents
Hybrid density medium ball double mass single barrel vibrating mill Download PDFInfo
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- CN207056694U CN207056694U CN201720793171.3U CN201720793171U CN207056694U CN 207056694 U CN207056694 U CN 207056694U CN 201720793171 U CN201720793171 U CN 201720793171U CN 207056694 U CN207056694 U CN 207056694U
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Abstract
The utility model is hybrid density medium ball double mass single barrel vibrating mill, including main vibrating system and vibrating isolation system, the main vibrating system includes vibrating motor and mill tube, 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 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, and the main vibration spring group is made up of several pitches not doubling-up helical springs, and each spring forms by a steel wire coil around structure.The utility model is due to that with main 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；Not doubling-up of the main vibration spring under possible maximum load so that system noise significantly reduces and dynamic stability greatly increases.
Description
Technical field
A kind of milling equipment prepared for the vibration of material fining powder is the utility model is related to, is that one kind has pitches
Simultaneously the monotubular double-mass vibrating of coil spring is not 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, there is the advantages such as mechanical mass activity is big, purification is convenient, cost is low, simple in construction, efficiency is high, existing vibromill branch
Support spring typically uses 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 mostly elemental body structure.
The elemental body structure of vibromill, show between the vibration plastid and base that are made up of cylinder and vibrator, be to pass through
Spiral compression spring is connected, and is vibrated caused by vibration plastid, ground can be directly acted on by spring pedestal, 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 designs, 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
The mill that medium, the grinding charge material of system in itself are formed, which is situated between, to flow, and constantly throws, falls in motion process, and actually one
Nonlinear change can also occur wherein for the process of individual complicated mass change, damping, and the bias that the inclined block of vibrating motor is formed swashs
Power of shaking be with the change of corner and change it is non-linear, vibration grinding system be actually a typical nonlinear system, be
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 vibrating machine generally uses for linear line, for etc. rigidity spiral shell
Spring is revolved, does not account for the actual condition of mission nonlinear, such as jigging conveyer, vibrating scalper, vibrating mill, due to motion
The system load moment is all changing under state, therefore the stiffness helix spring such as uses, though there are simple in construction, low cost and other advantages, so
Noise is big, power consumption is high, efficiency is low, the maintenance frequency is high, equipment life is low etc. be present.
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, has 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 determines；The height or length of spring will determine according to deformation required after stand under load.
Normal linear spring can not realize variation rigidity, then can not realize and the vibration coupling of 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 inquire into the problem of, this reality
With the introducing of new variable-pitch spring, the needs of exactly this research.
Recent domestic experts and scholars are inquiring into the solution of above mentioned problem always, due to equal pitch, constant stiffness spiral shell
Rotation metal spring is easily designed, easily manufactured, good economy performance, therefore is widely used for a long time.In summary, while overcome above-mentioned
The new grinding machine with efficient energy-saving of problem is not yet suggested so far.
The content of the invention
The utility model provides a kind of pitches, and simultaneously coil spring monotubular double-mass vibrating is not ground, and has double mass technology special
Sign, main vibration spring are that simultaneously coil spring, isolation spring are not rubber duck complex spring to pitches, and master-isolation spring is to become firm
Degree；It is to improve to grind impact of Jie's ball in relative motion, extruding, shearing, the energy of collision in cylinder, implements hybrid density medium and match somebody with somebody
It is small etc. with obvious efficiency high, noise compared with existing widely used common single vibration grinding machine system than optimal design-aside
Feature, it is intended to effectively solve existing vibromill all the time, the technical bottleneck problems such as pendent noise is big, efficiency is low.
Novel monotubular double-mass vibrating mill of the present utility model takes following technology to realize：
The utility model is that simultaneously coil spring is not ground pitches with hybrid density medium monotubular double-mass vibrating, including main shake is
System and vibrating isolation system,
The main vibrating system includes by the vibrating motor for being used as exciting source of Frequency Converter Control and electric with the vibration
The mill tube that machine is fixed together, the vibrating motor, the mill tube and the upper upper plastid of plastid plate composition, one end of lower plastid
It is connected with main vibration spring group, 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
It is connected with ground；
The main vibration spring group is made up of several pitches not doubling-up helical springs, each spring by a steel wire coil around
Structure forms, and described steel wire is wound into variable-pitch screw structure according to design data, and steel wire is wound into variable-pitch screw structure, becomes
Pitch not doubling-up helical spring at least 4 enclose the above effective helix angle, and the central diameter of effective helix angle for become central diameter spiral, central diameter from
Centre is typically distributed to both ends in Rearrangments.
Further improvement of the utility model is：The main vibration spring is in vibromill along vertical with vibrating motor main shaft
Direction is put number row, placed several rows along with vibrating motor main axis parallel direction, forms the uniform state of spring.
Further improvement of the utility model is：The isolation spring is composite such as rubber duck composite system
Into isolation spring.
Double-mass vibrating mill described in the utility model is mainly made up of main vibrating system with vibrating isolation system, is vibrated in main vibrating system
Motor can reach the purpose for becoming exciting force as exciting source by Frequency Converter Control, and what is be fixed together with vibrating motor is mill
Cylinder, both form upper plastid together with upper plastid plate, and lower plastid one end is connected with main vibration spring group, by main vibration spring group and every
Vibrating system 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 Converter Control vibrating motor, to change exciting force, vibrating motor makees approximate circle vibration with mill tube so that in mill tube
Mill, which is situated between, produces mutually motion, so, in cylinder and be adhered to mill be situated between and barrel on powder reach grinding due to hitting, rubbing
Purpose.The double-mass vibrating mill passes through two groups of springs of main vibration spring group and isolation spring, can significantly reduce vibromill
Main body has reached the effect of energy-conservation to oscillation intensity caused by ground and noise.Isolation spring is installed on lower plastid and base
Between, base, by bolt group concrete mutually, can prevent moving horizontally for vibrating mill with ground.
The load envnlope line of the pitches not doubling-up helical spring is cumulative type non-linear line, and be it is continuous or point
Section is continuous, and this is advantageous to the generation for preventing its resonance and flutter；Due to the change of central diameter, in identical steel wire diameter difference pitch
In the case of, decrement during adjacent two steel wires doubling-up, variable-pitch spring is big compared with common spring.It is special according to the structure of this spring
Point, consider the condition of not doubling-up, the not doubling-up of grinder system main vibration spring can be achieved, noise caused by spring doubling-up is zeroed.
Due to the pitch variation of the helical structure of composition pitches not doubling-up helical spring, there is the utility model obvious
Non-linear and required variation rigidity feature, i.e., the utility model spring form system stiffness have increases and decreases with loads increasing or decreasing
Variation rigidity feature, make the effective accumulation of energy of system, energy-conservation, steady running, the purpose for significantly reducing noise to reach.
The pitches not doubling-up helical spring group formula double-mass vibrating mill, spring edge in vibromill are hung down with electric machine main shaft
Nogata is multiple rows of to putting, and places some rows along with electric machine main shaft parallel direction, the uniform state of spring is formed, so that vibromill is more preferable
Work.
The spring design of vibrational system so far, the factor of not doubling-up was not almost accounted for, both due to traditional design
Limitation, existing again influences that not doubling-up associated technical parameters are more and calculate numerous and diverse, thus not only noise is big for system, and energy consumption
Height, efficiency are low.According to the design feature of this spring, the bar of not doubling-up is analyzed and studied in the utility model research from working mechanism
Part, the not doubling-up of main vibration spring in the grinder system course of work can be achieved, noise caused by spring doubling-up is zeroed.
In the utility model, isolation spring can be made of rubber duck composite, lower plastid by isolation spring and
Base is connected with ground, and because isolation spring has hard nonlinear characteristic, its rigidity has the characteristics of changing with load change,
Therefore good damping result, preferable noise reduction can be obtained, the purpose of firm banking mainly prevents vibromill in the horizontal direction
Movement in face.
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 has compact-sized, volume with comminuting matter, the acceleration of mill tube vibration to complete to impact typically up to 6g-12g
Small, in light weight, properties of powder performace concentration, process simplification, it is simple to operate, easy to maintenance, liner plate Medium Replacement is easy the advantages that, can be wide
It is general to be used for the industry powder such as metallurgy, building materials, mine, fire resisting, chemical industry, glass, ceramics, graphite.
The beneficial effects of the utility model are：Vibrating mill described in the utility model compared with common elemental body grinding machine, by
In with main vibrating isolation system, bigger exciting force on the one hand can be born, on the other hand can effectively reduce vibrating mill to ground
Vibration effect, reach good energy-saving effect；The rigidity of the variable-pitch spring and rubber spring can be maximum with grinder system
The change of load and change, can not only have accumulation of energy, the effect of energy-conservation, and provide necessary bar for the coupled vibrations of main vibration isolation
Part, not doubling-up of the main vibration spring under possible maximum load so that system noise significantly reduces and dynamic stability greatly increases,
Overall efficiency is obviously improved.
Effect of the present utility model is positive, obvious and unique, and it has ultramicro powder refinement, de-agglomerated, powder production
Band narrows, energy consumption is low, mill efficiency is high, capacity usage ratio is high and effective accumulation of energy, energy-conservation, significantly steady running, drop for product distribution
The features such as low noise, vibration isolating effect are good.Above-mentioned technology of the present utility model, effectively solve existing vibromill all the time hang and
In the technical bottleneck problems such as pending energy consumption is big, efficiency is low, a step of leap will be realized.
Brief description of the drawings
Fig. 1 is the utility model embodiment vibromill structural representation.
Fig. 2 is the moulding figure of the utility model embodiment main vibration spring.
Fig. 3 is that two spring characteristic curves compare before and after the utility model embodiment amendment.
Fig. 4 is the utility model embodiment main vibration spring rigidity and load matched curve figure.
Fig. 5 is the utility model embodiment main vibration spring component Butut.
Wherein：1- mill tubes；The upper plastid plates of 2-；Plastid under 3-；4- bases；5- shock insulation springs；6- main vibration spring groups；7- vibrates
Motor.
Embodiment
In order to deepen to understanding of the present utility model, the utility model is made below in conjunction with drawings and examples further
It is described in detail, the embodiment is only used for explaining the utility model, and the scope of protection of the utility model is not formed and limited.
It is the utility model vibration milling machine structure sketch shown in Fig. 1, Jie's packing factor is ground in cylinder and is set to 65%, mill is situated between
A diameter of 2mm, 3.5mm, 5mm, 6.5mm, material are superhard fine powder body, and grinding machine vibration frequency is 1450rpm, survey amplitude<
22mm, shake strong<20.
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 caused axial moment of couple
Completely in system tolerance range.It is of the present utility model be mainly characterized by exciting force, amplitude, frequency, shake the Parameters variation model such as strong
Enclose greatly, its size, action time can be control effectively by frequency converter.
As shown in figure 1, caused vibration directly drives upper plastid and mill tube, mill tube during each rotation of block partially on vibrating motor
Built with medium and powder, vibrate the mills such as the steel ball made in mill tube Jie and collision, impact produced to material, shears, extrude and rubs with the hands and grind,
Reach and material is crushed and the purpose of fine grinding, pass through and adjust the angle of the inclined block of major-minor, change the grading that mill is situated between and select, implement
The measures such as VFC, required certain frequency high amplitude, Gao Zhenqiang vibration crushing effect can be produced.
The utility model grinding machine is made up of upper and lower plastid and main vibrating isolation system, forms double mass, upper plastid is mainly by upper matter
Body plate, vibrating motor, mill tube consolidation form, and have mill Jie and powder in cylinder, are connected between upper and lower plastid with main vibration spring group；Under
It is connected between plastid and base with isolation spring, base is with ground with bolt group concrete mutually.Under working condition, by frequency converter control
Vibrating motor processed, change exciting force by changing transient state rotational frequency, so change amplitude, shake strong change curve, reach high
Imitate the purpose of grinding.
As shown in Fig. 2 pitches not doubling-up helical spring by a steel wire coil around forming, described steel wire coil by design around
Into variable-pitch screw structure, the Parameters variation such as the design visible system quality of variable-pitch spring, exciting force is improved.Pitches
Not doubling-up helical spring at least 4 enclose the above effective helix angle, and the effective pitch of effective helix angle be equal pitch spiral, spiral
Central diameter is from centre to both ends Rearrangments.
The load envnlope line of the spring is cumulative type non-linear line, and is continuous or zonal cooling：This is advantageous to
Prevent the generation of its resonance and flutter；The big I of pitch takes different pitches between each circle, 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 pitches not doubling-up helical spring is identical, and spiral central diameter is from centre to both ends Rearrangments.Pitches are not
Doubling-up helical spring plays support framework, has good nonlinear characteristic and a damping and amortization, is particularly carried in system during work
Lotus increase, it is mutated or can be played when overloading and doubling-up occurs and improve bearing capacity, increase system stiffness and noise reduction, noise reduction, vibration damping
Effect.
Set in embodiment the nonlinear characteristic line equation of main vibration spring as：
F=af2+bf+c (1)
F, f in formula：A system transient load in office and corresponding deformation, a, b, c are undetermined coefficient.
According to system loading conditions, if the number of main vibration spring is n, the static load plastid quality that is determined by system can must be
Single spring institute is loaded during static load of uniting is
During system motion, maximum dynamic loading is suffered by single spring
Fmax=1.4 (kjFj+kdFg)N (2)
Above formula will consider at 2 points：
(1) minimum load situation is static load scenario, and now single spring stress is Fj。
(2) additional load caused by each spring Dynamic And Static Loads and its uneven effect, takes each spring stand under load nonuniformity coefficient
For 1.4, Dynamic And Static Loads consider the experimental test situation of the not doubling-up of vibromill minimum rigidity coil spring, choose kj=2~5 most
Big dead load, the k of maximum inertia force is caused plus vibrating motor excitingd=1.5~3, as maximum dynamic loading.
Three point coordinates of nonlinear characteristic line can be obtained accordingly, and then determine constant a, b, c, obtain nonlinear characteristic wire spring
Deformation under load equation.According to vibrating mill engineering site situation and design experiences, shear modulus G is taken, allowable shear stress can be obtained
[τ], mean diameter of coil D, spring filament diameter d are chosen, looks into spring design manual, according to curling up ratioCurvature correction factor K is taken, then is counted
Calculation can obtain spring and respectively enclose spring rate F before and after rigidity P ', each circle doubling-upi"、Fi', respectively enclose load F during doubling-upi, pitch tiDeng meter
Calculate result.Calculating process is carried out MATLAB programing operations, by changing mean diameter of coil D and spring filament diameter d, can be obtained different
Spring natural length H, spring-mass and displacement, it is ensured that spring not doubling-up under maximum load effect, the reasonability of assay.
From the foregoing, because pitch from both ends to centre is two-way incremental arrangement, therefore the 2nd, 6 circles have met maximum functional
Not doubling-up requirement under load, to ensure with certain safe clearance and pitches requirement, the spacing value ratio of the 3rd, 4,5 three circle
2nd, 6 circles are big, each circle deformation f of springiThere is following relation with the spacing of each circle：
Data above is substituted into the formula (1) for having determined that undetermined coefficient, revised spring load deformation characteristic equation can be obtained,
Thus two front and rear spring non-linear hard characteristic wire spring load of amendment and deformation curve can be made, as shown in figure 3, can be seen by figure
Go out, revised curve has more preferable variation rigidity characteristic.Wherein, curve 1 is curve after amendment, and curve 2 is curve before amendment.
Analyzed from Fig. 3, system variant increases and increased with system load under varions type load；Increase when load is mutated
During to certain value, always due to not reaching maximum dynamic loading, therefore spring will not doubling-up, now system variant increase and several with load
It is unchanged, obvious hardware features nonlinear characteristic is presented, this is beneficial to increase amplitude stability.
Rigidity before each circle doubling-up is plotted into curve as shown in Figure 4 with the rule of load change, as can be seen from Figure：It is single
Spring load from minimum load to maximum load in the range of the rigidity curve of load be approximately a straight line, i.e., now system stiffness with
Load is substantially linear.
Accordingly, the stability of hardware features nonlinear system amplitude can be further illustrated.By the natural frequency of vibration of spring
Analysis is understood, in variable mass system, when rigidity and load are linear change, then ω is still a constant, because this is
System is worked under Near resonance oscillating situation, and its amplitude A near Near resonance oscillating areaa=F/r ω, know that ω is substantially constant by (4) formula,
R is the damped coefficient of system, and change is also little, if now exciting force F is substantially constant, AaFor constant, therefore Near resonance oscillating state
Lower amplitude is substantially constant, and this just illustrates now system amplitude stability, and working condition is steady.
From the experiment of prototype design, under the high vibration intensity effect that system occurs, irregular pitch helical spring
Pitch variation by it is ascending be incremented by unidirectional array when, and the number of turns is more and noise is larger, and causes load to the inclined block system of two level
The Spline smoothing reaction of lotus is unstable；Pitch variation is by two-way incremental arrangement broad in the middle small in ends, and without the simultaneously number of turns, doubling-up is made an uproar
Sound is zero, and causes the Spline smoothing of load to react relatively stable to the inclined block system of two level；In view of the influence of high vibration intensity
And the stability of system vibration, therefore the design uses the latter.
Non-linear variable-pitch spring makes system stiffness change with load change, not only the feature with efficient energy-saving, together
When system amplitude can be made basicly stable.Therefore it is changed to fit as the normal spiral compression spring of main vibration spring during conventional vibration is ground
Suitable non-linear variable-pitch screw compression spring, can reach systems stabilisation amplitude, realizes the purpose of system high efficiency energy-conservation.
As shown in figure 5, the distribution situation of pitches not doubling-up helical spring group, pitches not doubling-up helical spring are vibrating
Two rows are put along with electric machine main shaft vertical direction in mill, position 1-6 is placement location of the spring in vibromill, and edge is put down with electric machine main shaft
Line direction places 3 rows, forms 6 uniform states of spring, so that mill tube can normally complete vibratory milling work.
Isolation spring the present embodiment selects the crate tire of rubber duck composite, and experiment proves and General Purpose Rubber bullet
Spring, metal 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 (1)
1. hybrid density medium ball double mass single barrel vibrating mill, including main vibrating system and vibrating isolation system, it is characterised in that：
The main vibrating system includes consolidating by the vibrating motor for being used as exciting source of Frequency Converter Control and with the vibrating motor
It is scheduled on mill tube together, the vibrating motor, the mill tube and the upper plastid of upper plastid plate composition, one end of lower plastid and the main bullet that shakes
Spring group 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 pitches not doubling-up helical springs, each spring by a steel wire coil around structure and
Into described steel wire is wound into variable-pitch screw structure according to design data, and steel wire is wound into variable-pitch screw structure, pitches
Not doubling-up helical spring at least 4 encloses the effective helix angle of the above, and the central diameter of effective helix angle is becomes central diameter spiral, central diameter is from centre
It is distributed to both ends in Rearrangments；
The main vibration spring puts number row, edge and vibrating motor main axis parallel in vibromill along with vibrating motor main shaft vertical direction
Direction is placed several rows, forms the uniform state of spring；
The isolation spring is isolation spring made of composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720793171.3U CN207056694U (en) | 2017-07-03 | 2017-07-03 | Hybrid density medium ball double mass single barrel vibrating mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720793171.3U CN207056694U (en) | 2017-07-03 | 2017-07-03 | Hybrid density medium ball double mass single barrel vibrating mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207056694U true CN207056694U (en) | 2018-03-02 |
Family
ID=61506859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720793171.3U Expired - Fee Related CN207056694U (en) | 2017-07-03 | 2017-07-03 | Hybrid density medium ball double mass single barrel vibrating mill |
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| Country | Link |
|---|---|
| CN (1) | CN207056694U (en) |
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2017
- 2017-07-03 CN CN201720793171.3U patent/CN207056694U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 |