CN206996784U - Convexity not simultaneously coil spring double mass single barrel vibrating mill - Google Patents

Abstract

The utility model is convexity not simultaneously coil spring double mass single barrel vibrating mill, including main vibrating system and vibrating isolation system, main vibrating system includes the vibrating motor for being used as 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 forms by a steel wire coil around structure.The utility model has the characteristics that ultramicro powder refinement, de-agglomerated, powder product distribution, and band narrows, energy consumption is low, mill efficiency is high, capacity usage ratio is high and effective accumulation of energy, energy-conservation, steady running, to significantly reduce noise, vibration isolating effect good.

Description

Convexity not simultaneously coil spring double mass single barrel vibrating mill

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 middle convex Simultaneously coil spring, medium are not the monotubular double-mass vibrating mill of hybrid density proportioning, belong to vibration and intersect using with powder technology Science and 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 vibromill generally uses is linear line, to wait stiffness helix Spring, and the actual condition in Vibration Using Engineering is mostly non-linear, such as jigging conveyer, vibrating scalper, vibrating mill, by The system load moment is all changing under motion state, therefore the stiffness helix spring such as uses, though there have that simple in construction, cost is low etc. to be excellent Point, but noise is big, power consumption is high, efficiency is low, the maintenance frequency is high, equipment life is low etc. be present.

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 the problems such as short life, the maintenance frequency is high, cost is high.

In summary, while the new grinding machine with efficient energy-saving of above mentioned problem is overcome not yet to be suggested so far.

The content of the invention

The utility model provides a kind of middle convex, and simultaneously coil spring, hybrid density medium monotubular double-mass vibrating are not ground, and are had Double mass technical characteristic, main vibration spring are middle convex not simultaneously coil spring, and isolation spring is rubber duck complex spring, master-vibration isolation Spring is variation rigidity；It is to improve to grind impact of Jie's ball in relative motion, extruding, shearing, the energy of collision in cylinder, implements mixed Close density medium ratio optimization to set, compared with existing widely used common single vibration grinding machine system, there is obvious effect The features such as rate is high, noise is small, it is intended to effectively solve existing vibromill all the time, the skills such as pendent noise is big, efficiency is low Art bottleneck problem.

Novel monotubular double-mass vibrating mill of the present utility model takes following technology to realize：

The utility model is convexity not simultaneously coil spring double mass single barrel vibrating mill, including main vibrating 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 middle convex not doubling-up helical springs, and each spring is by a steel wire coil Formed around structure, steel wire is wound into convexity type helical structure, the effective spiral shell of the middle circle of convex not doubling-up helical spring at least 4 above Rotation, and the effective pitch of effective helix angle is the spiral of equal pitch, spiral central diameter is typically distributed from centre to both ends in Rearrangments.

Further improvement of the utility model is：Middle convex not doubling-up helical spring edge and electric machine main shaft in vibromill Vertical direction puts several rows, is placed several rows along with electric machine main shaft 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.

Further improvement of the utility model is：The mill tube medium is two or more different proportioning.

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, passes through main vibration spring and vibration isolation system 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 becoming Frequency device controls vibrating motor, and to change exciting force, vibrating motor makees approximate circle vibration with mill tube so that mill is situated between in mill tube Produce mutually motion, so, in cylinder and be adhered to mill be situated between and barrel on powder reach the mesh of grinding due to hitting, rubbing , double-mass vibrating mill passes through two groups of springs of main vibration spring group and isolation spring, can significantly reduce vibromill main body over the ground Oscillation intensity caused by base and noise, and reached the effect of energy-conservation, 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 the utility model grinding machine is made up of some middle convex not doubling-up helical springs, wherein each Spring forms by a steel wire coil around structure, and steel wire is wound into middle convex helical structure according to design data, middle convex spring The Parameters variations such as design visible system quality, exciting force are designed, more than the middle circle of convex not doubling-up helical spring at least 4 Effective helix angle, and the effective pitch of effective helix angle is the spiral of equal pitch, spiral central diameter is from centre to both ends typically in symmetrically passing Deduction cloth.

The load envnlope line of middle convex not doubling-up helical spring is cumulative type non-linear line, and be it is continuous or segmentation connect Continuous, this is advantageous to the generation for preventing 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, noise caused by spring doubling-up can be made to be zeroed.

Due to the central diameter change of the helical structure of convex not doubling-up helical spring in composition, 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.

Middle convex not doubling-up helical spring group formula double-mass vibrating mill, middle convex not doubling-up helical spring edge in vibromill Put with electric machine main shaft vertical direction it is multiple rows of, along and electric machine main shaft parallel direction place some rows, form the uniform state of spring, so as to Vibromill preferably works.

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 is completed to impact and crushes grinding charge material, the acceleration of mill tube vibration typically up to 6g-12g, therefore with it is compact-sized, Small volume, 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, 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 uses, 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 throwing, in collision process for grinding process, because its density of material differs 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, necessarily cause it Impact energy greatly improves, and turns into the necessary condition for improving mill efficiency.

The realization of hybrid density media technology main points, it is a variety of to can reach generation impact, shearing, extruding etc. in grinding operation The Practical Project effect of the combining ability effect of power, some work barrier for overcoming vibrating machine, it is special to solve vibrating machine It is some key technologies of vibromill or restricts the bottleneck problem developed, does not refine, easily rolls into a ball as solved ultramicro powder in vibromill Poly-, powder product is distributed the problems such as band is big compared with wide and energy consumption, mill efficiency is low, capacity usage ratio is low, and then realizes material Ultra-fine or ultramicro grinding, reduce energy consumption, improve efficiency, there is significant engineering effort, economic and social benefit, due to high density Medium, which uses, causes the financial cost that grinding machine exciting power is slightly lifted, right compared with economic benefit caused by the utility model It can be ignored substantially in the target for pursuing high-quality powder.

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 middle convex 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 abundant bar for the coupled vibrations of main vibration isolation Part, not doubling-up of the main vibration spring under maximum load so that system noise significantly reduces and dynamic stability greatly increases, complete machine Efficiency is obviously improved；In the case of hybrid density medium size composition optimal design-aside, compared with existing grinder system, from Media density This angle is examined, and it is even more apparent to improve the advantages such as high, the reduction energy consumption of system effectiveness.

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

Utility model Fig. 1 is the utility model embodiment vibromill structural representation.

Fig. 2 is convex not doubling-up helical spring structure schematic diagram in the utility model embodiment.

Fig. 3 is convex spring adjacent turn not doubling-up schematic diagram in the utility model embodiment.

Fig. 4 is convex not doubling-up helical spring component Butut in the utility model embodiment.

Embodiment

In order to deepen to understanding of the present utility model, the utility model is done further below in conjunction with drawings and examples 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, 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 formed, and in the present embodiment, cylinder is built with grinding charge material and grinding Medium, its packing factor are 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, survey 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 It is identical with left avertence block some embodiments to left avertence block portion point statement, right avertence block portion point；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.It is of the present utility model to be mainly characterized by exciting force, amplitude, frequency, shake It is strong to wait parameter variation range big, 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 grading selection, the implementation for adjusting the angle of the inclined block of major-minor, changing mill Jie 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 and ground are 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.

The utility model is from the medium size composition of two kinds of different densities, i.e. wolfram steel, abrasion-resistant stee, the throwing of grinding process, In collision process, because its density of material differs about 2 times, then cause that mill in cylinder is situated between involve, relative velocity and involve, it is relative plus Speed etc. is moved value and increased severely, and due to greatly improving for impact energy, then generates and improves mill efficiency, reduces crushing carefully Degree, the multi-effect for reducing noise.

As shown in Fig. 2 middle convex not doubling-up helical spring by a steel wire coil around forming, described steel wire coil by design around Into middle convex helical structure, the Parameters variation such as the design visible system quality of middle convex spring, exciting force is improved, middle convex 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 middle convex not doubling-up helical spring is identical, and spiral central diameter is from centre to both ends Rearrangments, and middle convex is 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.

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 easy 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, it can obtain

Thus the not doubling-up of grinder system main vibration spring can be realized.

The distribution situation of middle convex not doubling-up helical spring group 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, form 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 (2)

1. convexity not simultaneously coil spring 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 middle convex not doubling-up helical springs, and each spring is by a steel wire coil around structure Forming, 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 The effective pitch of effective helix angle is the spiral of equal pitch, and spiral central diameter is distributed from centre to both ends in Rearrangments；

Middle convex not doubling-up helical spring puts several rows in vibromill along with electric machine main shaft vertical direction, and edge is parallel with electric machine main shaft Direction is placed several rows, forms the uniform state of spring；

The isolation spring is isolation spring made of composite.

2. convexity not simultaneously coil spring double mass single barrel vibrating mill according to claim 1, it is characterised in that：The mill tube medium For two or more different proportionings.