CN102601042B - Translational elliptical vibrating screen - Google Patents
Translational elliptical vibrating screen Download PDFInfo
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- CN102601042B CN102601042B CN201210070744.1A CN201210070744A CN102601042B CN 102601042 B CN102601042 B CN 102601042B CN 201210070744 A CN201210070744 A CN 201210070744A CN 102601042 B CN102601042 B CN 102601042B
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Abstract
The invention discloses a translational elliptical vibrating screen, which comprises a screening box supported on a base through an elastic support. The screening box is provided with a vibrator which is started to drive the screening box to vibrate and generate identical elliptical vibrating tracks everywhere in a vertical plane. An angle adjusting device is arranged on the elastic support at one side of a feed inlet of the screening box. The angle adjusting device adjusts and changes the dig angle of a bottom plate of the screening box, so that the end part of the bottom plate at one side of the feed inlet is higher or lower than that at one side of a feed outlet. The angle adjusting device can adjust the dip angle of the bottom plate of the screening box and is far away from the feed outlet. The angle adjusting device has less dust and impurities in the working position, so that visibility of operators is higher, the adjusting process by the operators is safer, and dust in the working position is less. The translational elliptical vibrating screen is beneficial to health of operators.
Description
Technical field
The present invention relates to vibratory sieve technical field, particularly relate to a kind of balanced elliptical shale shaker.
Background technology
Vibratory sieve utilizes oscillator exciting to produce vibration and drives screen box vibrosieve material, and vibratory sieve is applicable to the screening of difficult screened material, is the main plant equipment processing difficult screened material at present.Vibratory sieve is mainly divided into circular shale shaker and linear vibrating screen.
Vibratory sieve has the screen box that bottom surface is screen cloth or sieve plate, screen box vibration time, the material in screen box along with the vibration of screen box tossed, when material falls, small particles material by screen cloth or sieve plate out screened.Screen box has feeding mouth and discharging opening, screened material is needed to enter described screen box with certain speed from described feeding mouth, move to discharging opening direction in the process that material is tossed simultaneously, through throwing several times, screen remaining not by the large granular materials of described screen cloth or sieve plate gradually near discharging opening, finally leave described screen box from described discharging opening.
Circular shale shaker has an acceleration rotated, on-the-sieve material is more easily disperseed, have stronger unfreezing ability to the stifled sieve phenomenon of critical particle on screen cloth, make to block the critical solid phase particles shining net or sieve plate eyelet and tremble up or fall down, the possibility of blocking sieve aperture is less.The mass transport speed of circular shale shaker is lower, and the solid phase particles rebound on its screen cloth is serious, and increase the wearing and tearing to screen cloth or sieve plate, the service life of screen cloth or sieve plate is lower.
Screen cloth or the sieve plate of linear vibrating screen are horizontally disposed, and vibration vector only has a direction, have higher transporting velocity, can alleviate the wearing and tearing of screen cloth or sieve plate with the circle vibration shape compared with sieving.But its exciting force exists dead band, be easy to stifled sieve.
Therefore, how can overcome the defect that circular shale shaker and linear vibrating screen exist, and the operating efficiency improving vibratory sieve is those skilled in the art is badly in need of the technical problem that solves at present simultaneously.
Summary of the invention
The object of this invention is to provide a kind of balanced elliptical shale shaker, this balanced elliptical shale shaker overcomes the defect of circular shale shaker and linear vibrating screen existence, and has the advantage of circular shale shaker and linear vibrating screen simultaneously, and can improve the operating efficiency of vibratory sieve.
In order to reach above-mentioned technical purpose, the invention provides a kind of balanced elliptical shale shaker, comprising oscillator, screen box and support; Described screen box has feeding mouth and discharging opening, and described screen box is supported on described support by elastic support; Described oscillator is arranged on described screen box; Described oscillator drives described screen box vibrate and in perpendicular, produce the oscillation trajectory of identical ellipse everywhere when opening; The described elastic support that described screen box is positioned at described feeding mouth side is provided with angular adjustment apparatus, described angular adjustment apparatus adjustment changes the inclination angle of described screen box base plate, makes described base plate be positioned at the end of described feeding mouth side higher or lower than the end being positioned at described discharging opening side;
Described oscillator comprises first group of vibrating motor and second group of vibrating motor, the eccentricity of described first group of vibrating motor is greater than and is not equal to the eccentricity of described second group of vibrating motor, and the distance of described first group of vibrating motor and described feeding mouth is shorter than the distance of described second group of vibrating motor and described feeding mouth.
Preferably, described angular adjustment apparatus is telescoping cylinder, and described telescoping cylinder supports described elastic support.
Preferably, described angular adjustment apparatus is turbine and worm device and the screw mechanism of combination, and described turbine and worm device is connected described elastic support with one of described both screw mechanisms, and another one connects described screen box.
Preferably, described angular adjustment apparatus is the leading screw, screw and the locking nut that combine, and described leading screw is connected described elastic support with one of described both screws, and another one connects described screen box, and described leading screw is locked in precalculated position by described locking nut.
Preferably, the ratio of the eccentricity of described first group of vibrating motor and the eccentricity of described second group of vibrating motor is less than or equal to 1.9.
Preferably, the ratio of the eccentricity of described first group of vibrating motor and the eccentricity of described second group of vibrating motor is more than or equal to 1.3.
Preferably, described first group of vibrating motor and described second group of vibrating motor include at least one vibrating motor, and the vibrating motor with group is coaxial and eccentricity is identical.
Preferably, described screen box has crossbeam, and described vibrating motor is fixedly mounted on the crossbeam of described screen box.
Preferably, the described vibrating motor with group is fixedly mounted on two side plates of described screen box respectively.
The screen box of balanced elliptical shale shaker provided by the invention is supported on support by elastic support; Oscillator is arranged on described screen box, drives described screen box to vibrate and in perpendicular, produce the oscillation trajectory of identical ellipse everywhere when described oscillator is opened; The described elastic support that described screen box is positioned at described feeding mouth side is provided with angular adjustment apparatus, described angular adjustment apparatus adjustment changes the inclination angle of described screen box base plate, makes described base plate be positioned at the end of described feeding mouth side higher or lower than the end being positioned at described discharging opening side.
The base plate of the major axis of elliptic vibration track and minor axis and described screen box has a certain degree, when the base plate of described screen box tilts, the angle of the major axis of described ellipse and minor axis and described base plate is constant, change the angle of described major axis and minor axis and horizontal plane and vertical plane, have also been changed the angle of falling material and gravity direction simultaneously, improve output and the screening efficiency of vibratory sieve, the balanced elliptical shale shaker of this structure has the advantage of circular shale shaker and linear vibrating screen simultaneously.
The working environment of vibratory sieve discharging opening is relatively more severe, and especially when screening siccative, dust impurities is more.If described angular adjustment apparatus is positioned on the elastic support of discharging opening side, then in the vibratory sieve course of work, as adjusted the inclination angle of compass screen surface, more dust will affect the sight line of operating personnel, vibratory sieve is also in vibrational state simultaneously, is easy to make operating personnel injured; The environment that dust is many simultaneously also can have influence on the health of operating personnel.
The feeding mouth of vibratory sieve is positioned at the side of screen box top board, and described discharging opening is positioned at the bottom of screen box opposite side.Described angular adjustment apparatus is arranged on the elastic support of feeding mouth side, described angular adjustment apparatus and described discharging opening distant, dust and the impurity of the operating position of described angular adjustment apparatus are less, the visibility of operating personnel is higher, the adjustment process of operating personnel is safer, the dust of operating position is less, is also of value to the health of operating personnel, and can improve the service life of angular adjustment apparatus.
In further mode, described angular adjustment apparatus can be telescoping cylinder, and described telescoping cylinder supports described elastic support; Described angular adjustment apparatus can be the turbine and worm device of combination and screw mechanism, and described screw mechanism supports described elastic support; Described angular adjustment apparatus can also be the leading screw of combination, screw and locking nut, and described leading screw supports described elastic support.
The end that angular adjustment apparatus can make described screen box base plate be positioned at feeding mouth side raises, and this heeling condition is conducive to vibratory sieve and improves output; The end that angular adjustment apparatus can also make described screen box base plate be positioned at feeding mouth side reduces, and this heeling condition is conducive to vibratory sieve and improves screening efficiency.
In a kind of preferred mode, described oscillator comprises two groups of vibrating motors, the eccentricity of first group of vibrating motor is greater than and is not equal to the eccentricity of second group of vibrating motor, and the distance of described first group of vibrating motor and described feeding mouth is shorter than the distance of described second group of vibrating motor and described feeding mouth.
Eccentricity equals eccentric mass and is multiplied by eccentric arm, and when the eccentricity of two groups of vibrating motors is above-mentioned relation, described oscillator can obtain oval oscillation trajectory.By adjusting the relative altitude of two groups of vibrating motors, the angle of transverse and minor axis and screen box base plate can be changed; Also enough changed the angle of transverse and minor axis and screen box base plate by the relation adjusting two groups of vibrating motor eccentricities, meanwhile, the length relation of transverse and minor axis can also be changed.
Accompanying drawing explanation
Fig. 1 is the top view of a kind of detailed description of the invention of balanced elliptical shale shaker provided by the present invention;
Fig. 2 is the structural representation of the balanced elliptical shale shaker shown in Fig. 1;
Fig. 3 is the structural representation of balanced elliptical shale shaker the second detailed description of the invention provided by the present invention;
Fig. 4 is the structural representation of the third detailed description of the invention of balanced elliptical shale shaker provided by the present invention;
Fig. 5 is the top view of balanced elliptical shale shaker provided by the present invention 4th kind of detailed description of the invention;
Fig. 6 is the structural representation of the balanced elliptical shale shaker shown in Fig. 5;
Fig. 7 is the structural representation of balanced elliptical shale shaker provided by the present invention 5th kind of detailed description of the invention;
Fig. 8 is the top view of balanced elliptical shale shaker provided by the present invention 6th kind of detailed description of the invention;
Fig. 9 is the top view of balanced elliptical shale shaker provided by the present invention 7th kind of detailed description of the invention;
Figure 10 is the structural representation of the balanced elliptical shale shaker shown in Fig. 9.
Detailed description of the invention
Core of the present invention is to provide a kind of balanced elliptical shale shaker, and this balanced elliptical shale shaker overcomes the defect of circular shale shaker and linear vibrating screen existence, and has the advantage of circular shale shaker and linear vibrating screen simultaneously, and can improve the operating efficiency of vibratory sieve.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the top view of a kind of detailed description of the invention of balanced elliptical shale shaker provided by the present invention, and Fig. 2 is the structural representation of the balanced elliptical shale shaker shown in Fig. 1.
In a kind of concrete embodiment, the invention provides a kind of balanced elliptical shale shaker, comprise oscillator 1, screen box 2 and support 3; Described screen box 2 has feeding mouth 21 and discharging opening 22, and described screen box 2 is supported on described support 3 by elastic support 4; Described oscillator 1 is arranged on described screen box 2; Described oscillator 1 drives described screen box 2 vibrate and in perpendicular, produce the oscillation trajectory of identical ellipse everywhere when opening; The described elastic support 4 that described screen box 2 is positioned at described feeding mouth 21 side is provided with angular adjustment apparatus 5, the adjustment of described angular adjustment apparatus 5 changes the inclination angle of described screen box 2 base plate 23, makes described base plate 23 be positioned at the end of described feeding mouth 21 side higher or lower than the end being positioned at described discharging opening 22 side.
Elliptically vibrating screen vibrates under the drive of oscillator 1, when its centre of force overlaps with screen box 2 barycenter, its oscillation trajectory is ellipse in perpendicular, when described screen box 2 vibrates, material in it along with the vibration of described screen box 2 tossed, to drop on screen cloth bottom screen box 2 or sieve plate and gradually near discharging opening 22, described screen cloth or sieve plate screen described material, through throwing several times, garbled material leaves described screen box 2 from discharging opening 22, can not be detained on the base plate of screen box 2.
The base plate 23 of the major axis of elliptic vibration track and minor axis and described screen box 2 has a certain degree, when the base plate 23 of described screen box 2 tilts, the angle of the major axis of described ellipse and minor axis and described base plate 23 is constant, change the angle of major axis and minor axis and horizontal plane and vertical plane, have also been changed the angle of falling material and gravity direction simultaneously, optimize screening parameter; Have also been changed horizontal acceleration component and the vertical acceleration component of described material while the inclination angle change of described major axis, make it possible to improve output as required or improve screening efficiency.Therefore, the elliptically vibrating screen of this structure has the advantage of circular shale shaker and linear vibrating screen simultaneously, but also has higher operating efficiency.
The working environment of vibratory sieve discharging opening is relatively more severe, and especially when screening siccative, dust impurities is more.If described angular adjustment apparatus 5 is positioned on the elastic support 4 of discharging opening 22 side, angular adjustment apparatus 5 is in the environment of many dust, and service life can be affected; In the vibratory sieve course of work, as adjusted the inclination angle of compass screen surface, more dust will affect the sight line of operating personnel, and vibratory sieve is also in vibrational state simultaneously, is easy to make operating personnel injured; The environment that dust is many simultaneously also can have influence on the health of operating personnel.
The feeding mouth 21 of vibratory sieve is positioned at the side of screen box 2 crossbeam 24, and described discharging opening 22 is positioned at the bottom of screen box 2 opposite side.Described angular adjustment apparatus 5 is arranged on the elastic support 4 of feeding mouth 21 side, described angular adjustment apparatus 5 is distant with described discharging opening 22, dust and the impurity of the operating position of described angular adjustment apparatus 5 are less, and the improvement of working environment also contributes to the service life of improving this mechanism; The visibility of operating personnel is higher, and the adjustment process of operating personnel is safer, and the dust of operating position is less, is also of value to the health of operating personnel.
In further embodiment, described angular adjustment apparatus 5 is telescoping cylinder 51, and described telescoping cylinder 51 supports described elastic support 4.
Angular adjustment apparatus 5 can be set to telescoping cylinder 51, described telescoping cylinder 51 directly or indirectly supports described elastic support 4, and before vibratory sieve work, the described telescoping cylinder 51 of adjustment elongates or shortens, and makes described screen box 2 tilt and keep heeling condition.Described telescoping cylinder 51 can be electric cylinder, hydraulic cylinder or cylinder.
The end that angular adjustment apparatus 5 can make described screen box 2 base plate 23 be positioned at feeding mouth 21 side raises, and this heeling condition is conducive to vibratory sieve and improves output; The end that angular adjustment apparatus 5 can also make described screen box 2 base plate 23 be positioned at feeding mouth 21 side reduces, and this heeling condition is conducive to vibratory sieve and improves screening efficiency.
Please refer to Fig. 3, Fig. 3 is the structural representation of balanced elliptical shale shaker the second detailed description of the invention provided by the present invention.
In another kind of embodiment, described angular adjustment apparatus 5 is turbine and worm device 52 and the screw mechanism 53 of combination, and described turbine and worm device 52 is connected described elastic support 4 with one of described both screw mechanisms 53, and another one connects described screen box 2.
When turbine and worm device 52 and screw mechanism 53 combine relative motion, worm screw is rotated and drives turbine to rotate, and turbine has internal thread, and when turbine rotates, its internal thread engages relative motion with screw mechanism.Described screw mechanism 53 is set to vertical direction, and described screen box 2 feeding mouth 21 side is risen or reduction in the movement of vertical direction by screw mechanism 53, makes described screen box 2 be in heeling condition.
The lead angle of screw mechanism 53 is less than can the angle of self-locking, and worm screw lead angle is also less than can the lead angle of self-locking, can be in good self-locking state after the complete angle of whole institutional adjustment.Described angular adjustment apparatus 5 can by motor, hydraulic motor, manual or other devices drivings that worm screw can be driven to rotate.
Screw mechanism 53 does in the process of rectilinear motion, there is the trend that the axis around self rotates simultaneously, described screw mechanism 53 arranges one transmission rectilinear motion and does not transmit the structural rate of rotation as feather key, also spline can be set in screw mechanism 53 bottom, only the rectilinear motion of described screw mechanism 53 be passed to screen box 2.This programme can when extremely frigid zones hydraulic system is unreliable replacement liquid pressing system.
Please refer to Fig. 4, Fig. 4 is the structural representation of the third detailed description of the invention of balanced elliptical shale shaker provided by the present invention.
In another kind of further embodiment, described angular adjustment apparatus 5 is the leading screw 54, screw 56 and the locking nut 55 that combine, described leading screw 54 is connected described elastic support 4 with one of described both screws 56, another one connects described screen box 2, and described leading screw 54 is locked in precalculated position by described locking nut 55.
Leading screw 54 and screw 56 coordinate and rotation can be converted to translation, utilize the rectilinear motion of leading screw 54 to be elevated the base plate 23 of feeding mouth 21 side of described screen box 2.This scheme is mainly used in hypomegetic vibratory sieve.
Please refer to Fig. 5 to Fig. 7, Fig. 5 is the top view of balanced elliptical shale shaker provided by the present invention 4th kind of detailed description of the invention, Fig. 6 is the structural representation of the balanced elliptical shale shaker shown in Fig. 5, and Fig. 7 is the structural representation of balanced elliptical shale shaker provided by the present invention 5th kind of detailed description of the invention.
Certainly, described angular adjustment apparatus 5 is not only confined to the situation shown in above-described embodiment, and other mechanisms that can realize the lifting of screen box 2 feeding mouth 21 one end also can be applied as angular adjustment apparatus 5 of the present invention, the gear be such as meshed and tooth bar.
Such as adopt a lowering or hoisting gear, on lowering or hoisting gear, install a bottom girder 26, bottom girder 26 supports elastic support 4.Can also adopt angle adjustment framework 27, described angle adjustment framework 27 is hinged with support 3, and described angle adjustment framework 27 supports elastic support 4.
In the preferred mode of one, described oscillator 1 comprises first group of vibrating motor 11 and second group of vibrating motor 12, the eccentricity of described first group of vibrating motor 11 is greater than and is not equal to the eccentricity of described second group of vibrating motor 12, and described first group of vibrating motor 11 and the distance of described feeding mouth 21 are shorter than the distance of described second group of vibrating motor 12 and described feeding mouth 21.
Eccentricity equals eccentric mass and is multiplied by eccentric arm, and when the eccentricity of two groups of vibrating motors is above-mentioned relation, described oscillator 1 can obtain oval oscillation trajectory.
In the above-described embodiments, two groups of vibrating motor axial connecting lines are parallel to the base plate 23 of screen box 2, and the angle of transverse and minor axis and screen box 2 base plate 23 is essentially the angle of transverse and minor axis and two groups of vibrating motor axial connecting lines.
Also can be changed the angle of transverse and minor axis and two groups of vibrating motor axial connecting lines by the relation adjusting two groups of vibrating motor eccentricities, meanwhile, have also been changed the length relation of transverse and minor axis.
When adjusting the relative altitude of two groups of vibrating motors, the angle of two groups of vibrating motor axial connecting lines and screen box 2 base plate 23 changes, the angle of transverse and minor axis and two groups of vibrating motor axial connecting lines is constant, then change the angle of transverse and minor axis and screen box 2 base plate 23.
Circular shale shaker and linear vibrating screen are the special circumstances of elliptically vibrating screen, and the track of circular shale shaker is the ellipse that transverse is identical with minor axis, and the track of linear vibrating screen is ellipse short shaft is 0, and major axis is the ellipse of a fixed value.
Further in preferred mode, the ratio of the eccentricity of described first group of vibrating motor 11 and the eccentricity of described second group of vibrating motor 12 is less than or equal to 1.9.
By the exciting force synthesis that first group of vibrating motor 11 and second group of vibrating motor 12 produce, produce oval track, according to the equation of locus of ellipse, can draw oval major axis and the ratio of minor axis equal two groups of vibrating motor eccentricities and than the difference of upper eccentricity; When the eccentricity of first group of vibrating motor 11 is less than or equal to 1.9 than the eccentricity of upper second group of vibrating motor 12, the major axis of elliptical orbit and the ratio of minor axis are greater than 3.2, and the angle of transverse and screen box 2 base plate 23 is greater than 45 degree.
Further preferred embodiment in, the ratio of the eccentricity of described first group of vibrating motor 11 and the eccentricity of described second group of vibrating motor 12 is more than or equal to 1.3.
When the ratio of the eccentricity of two groups of vibrating motors is more than or equal to 1.3, the major axis of elliptical orbit and the ratio of minor axis are less than 7.7, and the angle of transverse and screen box 2 base plate 23 is less than 70 degree.
The ratio of the eccentricity of two groups of vibrating motors is positioned at (1.3,1.9) time in interval range, the ratio of oval vibration shape major axis and minor axis is positioned at (3.2,7.7) in interval range, the angle of transverse and minor axis and two groups of vibrating motor axial connecting lines is positioned in (45 °, 70 °) interval range.
Relation in prior art between the ratio of two groups of vibrating motor eccentricities and elliptical orbit is all by realizing the forced synchronism of two groups of vibrating motors.The present invention is on two groups of self synchronous bases of vibrating motor, the major axis of balanced elliptical shale shaker elliptical orbit and the angle of two groups of vibrating motor axial connecting lines is changed by the ratio of the eccentricity adjusting two groups of vibrating motors, utilize above-mentioned interval relation, forced synchronization device can be omitted, simplify the structure of vibratory sieve, reduce manufacturing cost and use cost, have adjusted elliptical orbit, optimize screening parameter, best screening effect can be obtained.
The method changing the ratio of two groups of vibrating motor eccentricities is realized by the angle often organized between eccentric block of adjustment vibrating motor, the relation of the eccentricity of two groups of vibrating motors can be changed, thus obtain the major axis of required ellipse and the angle of two groups of vibrating motor axial connecting lines.
Coordinate different materials can select different transverses and the ratio of minor axis, and then by the method adjustment transverse of adjustment two groups of vibrating motor relative altitudes and the angle of compass screen surface 23, make vibratory sieve can more adapt to different materials.Expand the range of application of self-synchronous Translation elliptic vibrating screen.
The powder that granularity is thinner and the larger material of proportion should the projection angles of selection of small, now, if material does not belong to difficult screened material, the ratio of transverse and minor axis can be selected to be positioned at [4,7.7] in interval, transverse and the larger vibratory sieve of minor axis odds ratio, can adjust to suitable size by the method for above-mentioned adjustment angle by the angle of transverse and compass screen surface 23, can productivity gain.
The powder that granularity is thinner and the larger material of proportion should the projection angles of selection of small, now, if material belongs to difficult screened material, the ratio of transverse and minor axis can be selected to be positioned at [3.2,4] in interval, the elliptical orbit of this vibratory sieve compares and is conducive to unfreezing, coordinates above-mentioned angle adjusting method, can obtain the effect that output, screening efficiency and unfreezing are all optimum.
Comparatively large or that viscosity the is stronger material of moisture should select larger projection angles, if material now belongs to difficult screened material, then need the ratio reducing transverse and minor axis, the above-mentioned angle adjusting method of same application, the screening of this difficult screened material can being made, obtaining good screening effect when using self-synchronizing elliptical vibrating screen.
The oval vibration shape realized by forced synchronism at present, makes the range of application of elliptically vibrating screen be restricted.Adopt the ratio of the eccentricity of adjustment two vibrating motor to the method for the transverse and two groups of vibrating motor axial connecting line angles that adjust needs in the present invention, two groups of vibrating motors form the angle of the transverse needed for obtaining and two groups of vibrating motor axial connecting lines after realizing motor synchronizing.Adopt this kind of method, make the adjustment of elliptical orbit become simple, practical, expand the ratio range of transverse and minor axis simultaneously, have also been enlarged the scope of application of balanced elliptical shale shaker.
A kind of special circumstances that circular shale shaker is the ratio of first group of vibrating motor and second group of vibrating motor when being 0.Level off in the process of zero when the ratio of two vibrating motors is adjusted to by 1, the angle of the major axis of elliptical orbit and the line in two vibrating motor axle center reduces gradually; In test its angle can be made by the ratio of adjustment two vibrating motor eccentricity to reach less than 40 degree after motor synchronizing is stable.Angle is continuous print from the adjustment of 90 degree to 40 degree, when the ratio of the eccentricity of described first group of vibrating motor 11 and the eccentricity of described second group of vibrating motor 12 is greater than 1.3 and is less than 1.9, the angle of the line in transverse and two vibrating motor axle center is greater than 45 degree and is less than 70 degree.
The angle of transverse and compass screen surface and projection angles, when described projection angles is greater than 45 degree and is less than 70 degree, can increase the vertical component in material throwing process, obtain better screening efficiency.Coordinate the adjustment of transverse and minor axis ratio again can reach best screening effect.
When the major axis of elliptical orbit is greater than 3.2 with the length ratio of minor axis and is less than 7.7, add material be parallel to compass screen surface component of acceleration and perpendicular to Screen surface acceleration component, optimize the oval vibration shape, play and not only add output but also do not reduce screening effect and can accomplish to reduce the effect of production cost and use cost.
Due to the existence of test error, when the ratio of two vibrating motor eccentricities of oscillator 1 is certain certain value, the angle of corresponding transverse and the ratio of minor axis, transverse and screen box base plate all falls in the interval centered by certain certain value, so, the concrete numerical value mentioned in foregoing also can be the some little interval comprising this numerical value.The vibrator that oscillator 1 can also adopt two exciting forces not wait, the relation of two described exciting force of exciter is identical with the relation of above-mentioned two vibrating motor eccentricities.
In a kind of concrete embodiment, described first group of vibrating motor 11 and described second group of vibrating motor 12 include at least one vibrating motor, and the vibrating motor with group is coaxial and eccentricity is identical.
Can have identical eccentric mass and eccentric arm with the vibrating motor in group vibrating motor, then its eccentricity is identical; Also can eccentric mass different with eccentric arm, but eccentric mass is identical with the product eccentricity of eccentric arm.
Please refer to Fig. 8, Fig. 8 is the top view of balanced elliptical shale shaker provided by the present invention 6th kind of detailed description of the invention.
In further embodiment, described screen box 2 has crossbeam 24, and described vibrating motor is fixedly mounted on the crossbeam 24 of described screen box 2.
The motor of oscillator 1 can adopt Long Axis Vibration motor or minor axis vibrating motor.When adopting Long Axis Vibration motor, if screen box 2 width is applicable to, vibrating motor directly can be arranged on screen box 2, crossbeam 24 can not be used.If screen box 2 width is longer than the length of vibrating motor, vibrating motor can be arranged on the crossbeam 24 of screen box 2; When adopting minor axis vibrating motor, the mounting means similar on crossbeam 24 with Long Axis Vibration motor can be adopted.
Please refer to Fig. 9 and Figure 10, Fig. 9 is the top view of balanced elliptical shale shaker provided by the present invention 7th kind of detailed description of the invention, and Figure 10 is the structural representation of the balanced elliptical shale shaker shown in Fig. 9.
In another kind of further embodiment, the described vibrating motor with group is fixedly mounted on two side plates 25 of described screen box 2 respectively.
The motor of oscillator 1 can also adopt the vibrating motor of Flange joint form.When adopting the vibrating motor of Flange joint form, can be arranged on the side plate 25 of screen box 2, the position that the motor often in group vibrating motor is arranged on the relative side plate 25 of screen box 2 two is coaxial, and couples together with group vibrating motor axis.
Obviously, the motor of oscillator 1 is not only confined to the situation described in above-described embodiment, and other motors that can realize the concussion of oscillator 1 ovalize track also can be applied in the present invention.
Above elliptically vibrating screen provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (4)
1. a balanced elliptical shale shaker, comprises oscillator (1), screen box (2) and support (3); Described screen box (2) has feeding mouth (21) and discharging opening (22), and described screen box (2) is supported on described support (3) by elastic support (4); Described oscillator (1) is arranged on described screen box (2); Described oscillator (1) drives described screen box (2) vibrate and in perpendicular, produce the oscillation trajectory of identical ellipse everywhere when opening; It is characterized in that, the described elastic support (4) that described screen box (2) is positioned at described feeding mouth (21) side is provided with angular adjustment apparatus (5), described angular adjustment apparatus (5) adjustment changes the inclination angle of described screen box (2) base plate (23), makes described base plate (23) be positioned at the end of described feeding mouth (21) side higher or lower than the end being positioned at described discharging opening (22) side;
Described oscillator (1) comprises first group of vibrating motor (11) and second group of vibrating motor (12), and described first group of vibrating motor (11) is shorter than the distance of described second group of vibrating motor (12) and described feeding mouth (21) with the distance of described feeding mouth (21);
The ratio of the eccentricity of described first group of vibrating motor (11) and the eccentricity of described second group of vibrating motor (12) is less than or equal to 1.9;
The ratio of the eccentricity of described first group of vibrating motor (11) and the eccentricity of described second group of vibrating motor (12) is more than or equal to 1.3;
Changed the angle of transverse and minor axis and two groups of vibrating motor axial connecting lines by the relation adjusting two groups of vibrating motor eccentricities, also change the length relation of transverse and minor axis;
The ratio of the eccentricity of two groups of vibrating motors is positioned at (1.3,1.9) time in interval range, the ratio of transverse and minor axis is positioned at (3.2,7.7) in interval range, the angle of transverse and minor axis and two groups of vibrating motor axial connecting lines is positioned in (45 °, 70 °) interval range;
When adjusting angle by the relation adjusting two groups of vibrating motor eccentricities, angle is continuous print from the adjustment of 70 degree to 45 degree;
Described angular adjustment apparatus (5) supports described elastic support (4) for telescoping cylinder (51), described telescoping cylinder (51);
Or, described angular adjustment apparatus (5) is turbine and worm device (52) and the screw mechanism (53) of combination, described turbine and worm device (52) and described screw mechanism (53) the two one of be connected described elastic support (4), another one connects described screen box (2);
Or, described angular adjustment apparatus (5) is the leading screw (54), screw (56) and the locking nut (55) that combine, described leading screw (54) and described screw (56) the two one of be connected described elastic support (4), another one connects described screen box (2), and described leading screw (54) is locked in precalculated position by described locking nut (55).
2. elliptically vibrating screen as claimed in claim 1, it is characterized in that, described first group of vibrating motor (11) and described second group of vibrating motor (12) include at least one vibrating motor, and the vibrating motor with group is coaxial and eccentricity is identical.
3. elliptically vibrating screen as claimed in claim 2, it is characterized in that, described screen box (2) has crossbeam (24), and described vibrating motor is fixedly mounted on the crossbeam (24) of described screen box (2).
4. elliptically vibrating screen as claimed in claim 3, it is characterized in that, the motor often organized in described vibrating motor is arranged on described screen box (2) two relative side plates (25), often organizes the motor coaxle in described vibrating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210070744.1A CN102601042B (en) | 2012-03-16 | 2012-03-16 | Translational elliptical vibrating screen |
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| CN103909061A (en) * | 2014-04-22 | 2014-07-09 | 西南石油大学 | Translation elliptical vibrating screen with three short shock excitation motors |
| CN107051899A (en) * | 2017-04-28 | 2017-08-18 | 安徽捷迅光电技术有限公司 | A kind of vibration feeding mechanism for color selector |
| CN109692810A (en) * | 2019-02-26 | 2019-04-30 | 唐山地山科技有限公司 | A kind of probability screen |
| CN112604955B (en) * | 2020-11-27 | 2021-12-28 | 东北大学 | Three-machine frequency-doubling self-synchronous driving variable-track vibrating screen and parameter determination method |
| CN114632691B (en) * | 2022-03-30 | 2023-05-02 | 萍乡市康裕新能源科技有限公司 | Screening device for producing activated alumina |
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