CN107243403A - Convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium - Google Patents
Convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium Download PDFInfo
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- CN107243403A CN107243403A CN201710534498.3A CN201710534498A CN107243403A CN 107243403 A CN107243403 A CN 107243403A CN 201710534498 A CN201710534498 A CN 201710534498A CN 107243403 A CN107243403 A CN 107243403A
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- spring
- vibromill
- doubling
- mill
- convexity
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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
- B02C19/00—Other disintegrating devices or methods
- B02C19/16—Mills provided with vibrators
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- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention is convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium, including main vibrating system, main vibrating system includes being used as the vibrating motor of exciting source, at least one mill tube being connected with the vibrating motor and the balance weight body being connected with mill tube flange by Frequency Converter Control, vibrating motor, the mill tube are connected with the upper plastid of upper plastid frame composition, upper plastid by groups of springs phase with base；Groups of springs is made up of several middle convex not doubling-up helical springs, and each spring is formed by a steel wire coil around structure, and 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.The effect of the present invention is positive, obvious and unique, and it has particle refinement, de-agglomerated, energy consumption is low, mill efficiency is high, capacity usage ratio is high and effective accumulation of energy, energy-conservation, steady running, significantly reduces 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, medium are the side vibration mill that hybrid density is matched, and belong 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；Its medium generally uses isodensity medium, and such as abrasion-resistant stee, zirconium oxide are single
One density medium；Grinding machine is generally elemental body structure；Exciting source typically using overhead, underneath type, middle and side-mounted, for
Large-scale, super-huge vibration mill, especially based on side-mounted.
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
, so there is low big noise, power consumption height, efficiency, maintenance frequency height, equipment life low problem in point.
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, the side-mounted vibromill of hybrid density medium, is with vibrator
Vibrating motor is located at the side located structure and technical characteristic of mill tube left or right side, and upper plastid constitutes vibrational system, bullet with spring
Spring is middle convex not doubling-up variable rate spring；It is further to improve impact of the mill Jie's ball in relative motion in cylinder, extrude, cut
The energy cut, collided, implements hybrid density medium size composition optimal design-aside, with existing widely used common side vibration grinding machine
System is compared, with obvious efficiency high, noise is small the features such as, it is intended to effectively solve existing vibromill all the time, hang and not
Noise certainly is big, the low technical bottleneck problem of efficiency.
The novel side-mounted formula vibromill of the present invention takes following technology to realize：
The present invention is convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium, including main vibrating system, main vibrating system bag
Include by Frequency Converter Control as the vibrating motor of exciting source, at least one mill tube being connected with the vibrating motor and with
The balance weight body of mill tube flange connection, the vibrating motor, the mill tube pass through with the upper upper plastid of plastid frame composition, upper plastid
Groups of springs phase is connected with base；
Groups of springs 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
Silk is wound into middle convex helical structure, and middle convex not doubling-up helical spring at least 4 encloses the effective helix angle of the above, and effective helix angle
Effective pitch be equal pitch spiral, 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 mill tube medium is two or more different proportioning.
Side vibration mill of the present invention, the exciting of grinding machine comes from the direct effect of side-mounted vibrator, Yi Jiyu
The balance weight body of mill tube flange connection, balance weight body compensate for the eccentric structure of mill driving so that the mass centre of sky mill is still basic
On axis in grinding cylinder, compared with the homogeneous circular vibration that conventional vibration is ground, vibromill of the present invention produces oval, circular and line
A variety of vibrations such as shape, making the unit power consumption of vibromill reduces about 50%, and efficiency improves nearly 1 times, by kinematics model to mill tube
The motion of body has carried out quantitative analysis, and the efficiency that side vibration is ground is confirmed by the experiment and detection of testing machine.
Side vibration grinds the mill capsule i.e. mill tube that at least one is supported on vibration component, vibrator part conduct
Oscillation drive is rigidly fixed on this container, and vibrator carries out exciting in one side to mill capsule, i.e., in mill capsule
To its exciting outside gravity axis and center of gravity, wherein, in order to balance one balance mass of vibrator quality settings i.e. balance weight body,
The axle of spring of driving side be located between grinding machine and the gravity axis of vibrator part, drive vibrator part, so as to produce by
The uneven vibration of circular, ellipse and linear combination of vibrations, makes the material particles with certain bandwidth, obtains mill and is situated between
Impact, collision, shearing that group is continually changing etc., to improve mill grinding efficiency.The grinding machine of the present invention is main by upper plastid, exciting
Source, balance weight body, groups of springs and base composition, wherein vibrating motor is fixed on mill tube side as exciting source, with upper plastid frame,
Balance weight body constitutes plastid together, and base one end is connected with groups of springs, the other end and ground consolidation, after energization, can be by frequency converter
Vibrating motor is controlled, to change excited frequency, exciting force, mill Jie in mill tube and cylinder is produced in vibration, cylinder and stick to mill
Be situated between and barrel on powder reach the purpose of grinding due to hitting, rubbing, base with ground by bolt group concrete mutually, can be with
Prevent moving horizontally for vibrating mill.
The groups of springs of grinding machine of the present invention is made up of some middle convex not doubling-up helical springs, wherein each spring by
A piece steel wire coil is formed around structure, described steel wire is wound into middle convex helical structure according to design data, and middle convex spring is set
The Parameters variations such as meter visible system quality, exciting force are designed.More than the middle circle of convex not doubling-up helical spring at least 4 having
Spiral is imitated, and the effective pitch of effective helix angle is the spiral of equal pitch, spiral central diameter is general in Rearrangments from centre to two ends
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, special according to the structure of this spring
Point, it is considered to the condition of not doubling-up, can be achieved the not doubling-up of grinder system spring, the noise zero that can produce spring doubling-up, in detail
The specific embodiment seen below.
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 vibromill, middle convex not doubling-up helical spring in vibromill along with
Electric machine main shaft vertical direction puts multiple rows of, places some rows along with electric machine main shaft parallel direction, the uniform state of spring is constituted, to shake
The preferably work of dynamic mill.
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 conformation, volume with comminuting matter, the acceleration of mill tube vibration to complete to impact typically up to 6g-12g
Small, lightweight, properties of powder performace concentration, process simplification, the advantages of simple to operate, easy to maintenance, liner plate Medium Replacement is easy, 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 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 compared with common other non-side-mounted grinding machines, due to
The exciting of grinding machine comes from the direct effect of side-mounted vibrator, can produce grinding machine and be vibrated by circular, ellipse and linear
The uneven vibration combined, the material particles with certain bandwidth, can obtain grind group Jie be continually changing impact, touch
The effect such as hit, shear, to improve mill grinding efficiency；Compared with common elemental body grinding machine, due to main vibrating system, one side
Bigger exciting force can be born, vibration effect of the vibrating mill to ground on the other hand can be effectively reduced, reach good energy-conservation
Effect；The rigidity of the middle convex spring can change with the change of grinder system maximum load, can not only have accumulation of energy, section
The effect of energy, not doubling-up of the spring under possible maximum load so that system noise is significantly reduced and dynamic stability is greatly increased,
Overall efficiency is obviously improved；In the case of hybrid density medium size composition optimal design-aside, compared with existing grinder system, from medium
Density this angle 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, and particle refinement, de-agglomerated, energy consumption be low, mill efficiency
High, capacity usage ratio it is high and effectively accumulation of energy, energy-conservation, steady running, significantly reduce the features such as noise, vibration isolating effect are good.This hair
Bright above-mentioned technology, effectively solving existing vibromill, pendent energy consumption is big all the time, the low technical bottleneck of efficiency is asked
In topic, a step of leap 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, grinding machine mainly has a vibrating motor 1, mill tube 2, balance weight body 3,
Upper plastid frame 4, spring guide pillar 5, groups of springs 6, base 7 is constituted.Jie's packing factor is ground in cylinder can be set to 70%, and mill is situated between to be resistance to
Steel ball, wolfram steel ball are ground, two kinds of mill betweenness amount ratios are 6:4, a diameter of 2 mm of mill Jie, 3.5 mm, 5 mm, 6.5mm, material are superhard
Fine powder body, grinding machine vibration frequency is 1450 rpm, surveys amplitude<22mm, shakes strong<20.
As shown in figure 1, the vibration produced by the vibrating motor on the right side of cylinder, plastid and mill tube in direct drive,
Mill tube built with medium and powder, vibration make the mill such as steel ball in mill tube be situated between material is produced collision, impact, shearing, extruding and
Rub with the hands mill, reach material is crushed and fine grinding purpose.By adjusting the angle of the inclined block of major-minor, changing the level of mill Jie with choosing
Select, implement the measures such as VFC, certain frequency high amplitude, Gao Zhenqiang vibration crushing effect needed for can producing.
Plastid is main on grinding machine of the present invention is made up of upper plastid frame, vibrating motor, mill tube, balance weight body consolidation, cylinder built with
Mill is situated between and powder, is connected between upper plastid and base with spring, and spring upper and lower side is equipped with spring guide pillar, to ensure that upper plastid exists
The stability of vertical vibration；Base is with ground with bolt concrete mutually.Under working condition, electricity can be vibrated by Frequency Converter Control
Machine, changes excited frequency, exciting force by changing transient state rotational frequency, so change amplitude, shake strong change curve, reaches height
Imitate the purpose of 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.
In Fig. 2, middle convex not doubling-up helical spring by a steel wire coil around constituting, during described steel wire coil is coiled into by design
Convex helical structure, the Parameters variation such as design visible system quality, the exciting force of middle convex spring is improved, and middle convex is not simultaneously
The effective helix angle that helical spring at least 4 encloses the above is enclosed, and the effective pitch of effective helix angle is the spiral of equal pitch, spiral central diameter
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, and 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>0,
The not doubling-up of whole motion process can be achieved.If known spring wire diameter, the rigidity of spring middle position circle, spring shaft
To pitch, then rigidityIt should meet
（1）
ForThe minimum axial direction pitch of the lower middle position spring not doubling-up of effect, if setting, 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 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.
Claims (3)
1. convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium, including main vibrating system, it is characterised in that：
The main vibrating system includes electric as the vibrating motor of exciting source, at least one and the vibration by Frequency Converter Control
The mill tube of machine connection and the balance weight body being connected with mill tube flange, the vibrating motor, the mill tube and the upper plastid frame group
Into upper plastid, upper plastid is connected by groups of springs phase with base；
The groups of springs 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 effective pitch for imitating spiral is the spiral of equal pitch, and spiral central diameter is typically distributed from centre to two ends in Rearrangments.
2. convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium 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. convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium according to claim 1, it is characterised in that：Institute
Mill tube medium is stated for two or more different proportioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710534498.3A CN107243403A (en) | 2017-07-03 | 2017-07-03 | Convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710534498.3A CN107243403A (en) | 2017-07-03 | 2017-07-03 | Convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium |
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| CN107243403A true CN107243403A (en) | 2017-10-13 |
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| CN201710534498.3A Pending CN107243403A (en) | 2017-07-03 | 2017-07-03 | Convexity not simultaneously coil spring and the side-mounted vibromill of hybrid density medium |
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Application publication date: 20171013 |