CN202570594U - Energy-saving high-efficiency micro-vibration type fine linear screening machine - Google Patents
Energy-saving high-efficiency micro-vibration type fine linear screening machine Download PDFInfo
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- CN202570594U CN202570594U CN 201220144626 CN201220144626U CN202570594U CN 202570594 U CN202570594 U CN 202570594U CN 201220144626 CN201220144626 CN 201220144626 CN 201220144626 U CN201220144626 U CN 201220144626U CN 202570594 U CN202570594 U CN 202570594U
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Abstract
The utility model provides an energy-saving high-efficiency micro-vibration type fine linear screening machine which solves technical problems that an existing screening machine is low in efficiency, short in service life of a screening cloth, large in power consumption for screening, and the like. The linear screening machine comprises a frame, a feeding inlet, a crude powder outlet, a screening cloth, a net rack used to fix the screening cloth, and a vibrating screening bottom. The vibrating screening bottom is arranged below the frame and is provided with a fine powder outlet. The feeding inlet is arranged above the frame, and the crude powder outlet is arranged on the one side of the frame. Damping spokes which are used to decrease vibrating of a screening surface are arranged on the net rack. The high-frequency micro-amplitude micro-vibration device is arranged on one side of the vibrating screening bottom. Compared with a traditional linear sieve, a rotary vibration sieve, and a rotary vibration sieve with an ultrasonic cleaning function, on a same powder screening shunt volume condition (for example, eighty kilograms per hour), Newton efficiency of screening can be increased from 30-70% to more than 90%. The service life of the screening cloth is prolonged by more than ten times, and the power consumption of the screening is just 7-15% of original power consumption.
Description
Technical field
The utility model is a kind of equipment that the powder of various granule materials is separated by size, belongs to fine powder screening field.
Background technology
Screen cloth screening is a kind of technology or the equipment that disperses the powder granules of different sizes with mechanical energy and then carry out with screen cloth the thickness particle separation.This technology and relevant device are widely used in the powder processing industry, like industries such as food, chemical industry, ore dressing, powder metallurgy, pharmacy.Usually, the screening plant of large-scale industrial application has 2 kinds, promptly straight line shaker with revolve the sieve that shakes, summary as follows:
One, linear vibrating screen
Existing linear vibrating screen is applied to the coarse granule material screening, and it is driven by the double oscillating electromotor of screening machine both sides.When two vibrating motors are done synchronously, during reverse rotation, the exciting force that its eccentric block produced is cancelled out each other in the direction that is parallel to electrical axis, is stacked as one in the direction perpendicular to motor shaft and makes a concerted effort, the movement of particles track of straight line shaker extension set is generally a straight line.The relative compass screen surface of two motor shafts has an inclination angle, and under the force action of gravity, material is thrown great-jump-forward moving linearly forward on compass screen surface at exciting force and material, and fine particle is caught, thereby reach material is screened the purpose with classification.The characteristics of the general straight line shaker of using are at present:
(1) be suitable for the screening granularity: be applicable to granularity 0.074-5mm, water content less than 70%, the screening of noncohesive various dry type granular materials.Maximum feeding granularity is not more than 10mm;
(2) power: generally the motor by 0.4 ~ 1.5kW of 2 symmetries provides energy, and general power is at 0.8 ~ 3kW, and exhaustion point power is very big, and the purpose that adopts big power is to make screen cloth produce a big amplitude, material is thrown travel forward;
(3) screen cloth vibrations characteristics and amplitude: the direction of vibration of screen cloth is almost vertical with wire side, and the input power of equipment is very big again, so the amplitude of screen cloth is very big; Generally greater than 2mm; High order is counted net can not bear vibrations significantly, and as easy as rolling off a log breakage generally is not suitable for sieving the above mesh of 200 orders;
(4) mesh self-cleaning: stop up for preventing mesh, generally adopt the clear net of ball, it is low to net efficient clearly; Or not having other clear net arrangements, screening efficiency is low;
According to These characteristics, we are summarized as linear vibrating screen is the screening plant of a kind of suitable coarse granule material, high energy consumption, low screening efficiency.
Two, revolve the sieve that shakes
Generally revolve the work characteristics of the sieve that shakes: existing the revolving sieve that shakes is by the eccentric hammer that (descend) end to be installed on the motor shaft, with rotatablely moving of motor change level into, three-D vertical, that tilt moves, and conveys to compass screen surface to this motion again.If the phase angle that changes the weight of top and the bottom can change the direct of travel of material.Revolve the general common electric machine that adopts of the sieve that shakes and do power source; Revolve the riddler that shakes when doing exciter shaft rotate at a high speed; The eccentric body at its two ends forms consistency power, and sieve nest is generation revolving property vibration again under the effect of this power, and its movement locus is the space three-dimensional curve; This curve is at the circle that is projected as of horizontal plane, on two vertical planes, is projected as ellipse.
Adjust the angle of two eccentric bodies, can change the mobile parabolical length of material on compass screen surface, be sized the time thereby regulate material, to reach different screening effects.As a kind of continuous screening process, granule materials is generally made centrifugal parabolic motion on wire side.Generally revolving the granular size scope that the sieve that shakes can sorting is 325 ~ 100 orders (45 ~ 152 μ m), add online ultrasonic cleaning function on the net after, can improve screening efficiency, and smallest particles magnitude range that can sorting extends to 500 orders (25 μ m).The amplitude that cause is revolved the sieve that shakes is bigger, and 500 ~ 625 purpose nets are very easily damaged because of not bearing macroseism.
See that from principle the main direction of motion of material particles is to be parallel to wire side to do transverse movement during the work of this kind screening plant, material is big with the net friction, the screen cloth easy abrasion; Simultaneously, material particles moves with vertical with the mesh direction, and the disposable sub-sieve of particle is not thorough, and efficient is low; The 3rd, energy consumption is big.As for the wire side diameter being 1 meter screening machine, its power of motor is generally more than 1.1kW.
The working condition of comprehensive above two kinds of screening plants commonly used, we do following summary, concrete operation principle such as Fig. 1, Fig. 2 to their work characteristics and principle:
1, the design feature of screening machines such as the main vibrations direction of wire side, shaking force has determined the application category of common screening machine basically:
The generic linear sieve:Vibration motor rotating shaft and wire side direction Y are to becoming a little angle, but basically identical.So the wire side direction of vibration of generic linear sieve and wire side direction (the Z direction among Fig. 2) are same direction basically also; Vertical with the tension direction (like the x-y direction among Fig. 2) of net; The power of drive motors is big again, so the amplitude of straight line shaker when work wire side big (actual is maximum).The vibration characteristic of this wire side has determined the generic linear sieve can only use solid coarse net (less than 200 orders), and screening coarse granule, fine-structure mesh are damaged easily.So the generic linear sieve is suitable for sieving several orders ~ very thick granule materials of 200 purposes.
Revolve the sieve that shakes:Eccentric hammer is done complicated vibration under motor drives, but main oscillating component is horizontal parabolic Centrifugal vibration.This main oscillating component and wire side tension direction (x-y direction) consistent (like Fig. 1), the fraction oscillating component is vertical with wire side, so the wire side amplitude is less relatively.This characteristics make that revolving the sieve that shakes is suitable for installing the more tiny fine-structure mesh of steel wire (greater than 200 orders), can be used for sieving 200 ~ 500 purpose granule materials.
When the CD-ROM drive motor power that revolves the sieve that shakes is bigger, vibration is complicated, and 1 meter wire side of diameter is generally 1.5kW, thus net in the amplitude of wire side vertical direction (Z to) big (but compare with straight line shaker or smaller), fine-structure mesh is still lax, damaged easily.The lax back of screen cloth screening efficiency reduces.
2, about the efficiency of separation and continuation
Branch at fine granular materials is chosen, and the efficiency of separation is to weigh the main parameter of screening machine performance.Generally, influence the efficiency of separation and mainly contain following three factors:
A), the direction of motion characteristic of material particles and the relation of mesh direction during screening
Usually, when the direction of motion of material particles was consistent with the mesh direction, the granule that is sized was caught easily, and screening efficiency is high.In revolving the sieve that shakes, like Fig. 1, the main direction of motion of material particles is vertical basically with wire side direction Z; In straight line shaker, like Fig. 2, the main motion of material particles mainly is on wire side, to roll or the one-tenth parabolic path, and particle motion becomes a little acute angle b ° with wire side direction Z; So, see that from the kinetic characteristic of particle the screening efficiency of straight line shaker version is higher than revolves the sieve that shakes.
B), the maintenance of wire side elasticity in the use
For with a kind of mesh, if wire side keeps tightening in the screening process, then mesh is difficult stops up, and screening efficiency is high.Keep the mesh tightness must reduce screen cloth distortion in the course of the work, reduce screen cloth wire side amplitude in the course of the work in other words, in case wire side is lax.This is to keep the main factor of efficiency of separation sustainable high efficiency.In order to reduce the amplitude of wire side, must fully reduce the energy input of screening machine, promptly reduce the power of vibrating motor.
C), Ultrasonic On-line is cleaned
It is to improve the screening efficiency effective means that Ultrasonic On-line is cleaned.Generally, traditional straight line shaker is not installed the Ultrasonic On-line wiper mechanism because of the device characteristics restriction; Revolving the last powder more than sorting 250 orders of the sieve that shakes is that the Ultrasonic On-line wiper mechanism generally all is installed.Except the style characteristic of material particles, the net ultrasonic transmission weak effect that the validity of Ultrasonic On-line wiper mechanism is still relevant with the degree of tightness of net, loose, cleaning performance is not good, very easily network blocking yet.
About screen life-span
Under the prerequisite of not forcing the outside destroy screen cloth, screen life-span depends primarily on the amplitude size of screen cloth in the screening process.Amplitude is big more, and screen cloth is easy more lax, and screen life-span is just short more.The lax screening efficiency that also reduces of screen cloth; The motion mode of granule materials on wire side, the frictional force size of decision material and wire side.Point out in the superincumbent screening principle that the friction of revolving the screen cloth face that shakes is greater than straight line shaker.
In sum, for revolving the sieve that shakes, material particles mainly moves horizontally; Need overcome frictional resistance; Amplitude peak reduce vibrating motor power in, material particles mobile on wire side becomes impossible, so; Consider that from the combination that energy reduces to reduce with amplitude revolving the sieve that shakes is not the optimal selection that can keep efficient screening.
For the straight line shaker structure; Wire side has an inclination alpha ° (general 7 ~ 20 °) with level; Material particles is thrown to when input (macro-energy) or is rolled to when energy input (little) lower from eminence, even still can rely on gravity to realize screening continuously during the input of little energy.So, consider that from principle straight line shaker meets three primary conditions such as the high efficiency of separation (mesh orientation principle), low-yield input, high efficiency of separation retentivity.Thus, we must re-recognize straight line shaker possibility of its application aspect the fine powder sorting, and design again completely according to the structure of efficient screening principle to it, make the brand-new equipment that it becomes a kind of low energy consumption, high efficiency, can be used for carrying out the fine powder sorting.
The utility model content
The utility model provides a kind of energy-conservation, efficient, little vibration shape meticulous straight line shaker extension set, this device solves technical problems such as the power consumption short, that screening is required of not high, the screen life-span of present sifted component efficiency is bigger.
The utility model solves the technical scheme that its technical problem adopted:
The meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape; Comprise frame, at the bottom of charging aperture, meal outlet, screen cloth, the rack that is used for fixing screen cloth, the vibratory sieve, be fixed on the frame below at the bottom of the vibratory sieve and be provided with the fine powder outlet; Charging aperture is arranged on the frame top; Meal outlet is arranged on a side of frame, and the vibration damping spoke that can reduce screen cloth wire side amplitude is set on the described rack, the little vibrating device of high-frequency micro-amplitude is set at the bottom of the vibratory sieve.As preferably, a dispersal of feed device is set below the charging aperture.
As preferably, the combination of one or both in ultrasonic transducer, micro-vibration motor or the electromagnetism hopper wall vibrator that the described little vibrating device of high-frequency micro-amplitude that is installed at the bottom of the vibratory sieve is power 10 ~ 150W.
As preferably, described screen cloth is to transmit the vibration damping width of cloth net that microseism can be controlled (reducing) amplitude again.
As preferably, described vibration damping spoke screen cloth is fixed on the rack, and rack is a frame structure, and a side of rack is provided with meal particle blanking port.
As preferably, described rack main body is a rectangular frame, and inboard four angles of rectangular frame are rounding arc angle structure.This structure is the design of screen cloth anticracking, makes screen cloth stressed even when the stressed change of X-Y direction tension at place, net angle, avoids screen cloth when throwing the net and use vibrations, to produce the crack because of unbalance stress, thereby has prolonged the service life of screen cloth.
As preferably, described vibration damping spoke is the latticed inboard that is fixed on rectangular frame.Vibration damping width of cloth bar and screen cloth adopt the glue adhesion in this structure.
Another kind of preferred scheme is, described rack is made up of an outer rectangle rack and an interior looped network frame, and outer rectangle rack is connected by several vibration damping spokes with interior looped network frame.The vibration damping spoke comprises one-level vibration damping spoke and secondary vibration damping spoke; One end of described one-level vibration damping spoke is fixed on the interior looped network frame; The other end is vertically fixed on secondary vibration damping spoke middle part, the two T-shaped connection, and the two ends of secondary vibration damping spoke are fixed on two angles of outer rectangular frame.Looped network frame and wire side are sticking the couplets in this structure, and vibration damping spoke and wire side are not sticking to be joined.Further, on the described interior looped network frame ultrasonic transducer is installed, ultrasonic energy can pass to whole wire side through interior looped network frame, makes this wire side have the ultrasonic cleaning function.The effect of I and II vibration damping spoke is:
A, can isolate the outer low frequency of rack significantly mechanical oscillation with the protection wire side;
B shakes and outer rectangle rack is isolated the high frequency ultrasound on the interior looped network frame is little simultaneously, making full use of ultrasonic energy, and the reliability of raising ultrasonic transducer work.
Wire side horizontal tilt angle α is 7 ~ 20 °; Horizontal tilt angle β can adjust at the bottom of the vibratory sieve, is 20 ~ 35 °, is respectively 16 ° and 30 ° as preferred α, β angle.
As preferably, be fixed with the micro-vibration motor at the bottom of the vibratory sieve, on the described interior looped network frame ultrasonic transducer is set.
As preferably, frame both sides close end is provided with four screening under-chassis, and the screening under-chassis links to each other with frame through flexible connector, is positioned on two screening under-chassis of charging aperture one side the tilt adjustment mechanism that is used to regulate rack inclining degree α angle is installed.Through adjustment to the rack inclining degree, thus the gradient of regulating rack.
First characteristics of the utility model be remove two symmetries in traditional line screen(ing) machine device both sides high-power (0.4 ~ 1.5kW), the vibrating motor of large amplitude; The substitute is one can be installed in the bottom the little vibrating device of low power high-frequency micro-amplitude (10 ~ 150W), this little vibrating device can be a ultrasonic transducer, micro-vibration motor or electromagnetism hopper wall vibrator etc. like power.Need directionality with the vibrating motor rotating shaft of former straight line shaker and install differently, the installation direction of this little vibrating device can be arbitrarily.First purpose that the little vibrating device of small-power is installed at the bottom of vibratory sieve is that wire side is passed in the very little vibrations of amplitude, makes the solid particle that is screened can under the effect at gravity on the wire side, do small size parabolic motion or rolling, and realizes the high efficiency screening; Second purpose be make vibratory sieve at the bottom of vibrations and will be urged to vibratory sieve at the granule powder of being caught by sieve on the straight line shaker bottom surface at the bottom of fine powder outlet, realize screening continuously.As being about 1m for a wire side
2The straight line shaker extension set (hereinafter to be referred as straight line shaker) of the utility model; The ultrasonic transducer that this little vibrating device can be power a 50 ~ 100W (the steel plate wall thickness 1.5 ~ 2.5mm) at the bottom of the utility model straight line shaker; Also can be the electromagnetism hopper wall vibrator of a 20W, or the micro-vibration motor of a small-power 70W.The little vibrating device effect of the high frequency that amplitude is little is good more.
Second characteristic of the utility model are to have designed two kinds of vibration damping width of cloth nets that can transmit microseism.
Fig. 4 is a kind of vibration damping width of cloth wire side design that simply has the shock transfer function.Wherein vibration damping width of cloth bar and screen cloth are sticking joins.As previously mentioned, the direction of vibration of straight line shaker wire side is vertical with wire side tension direction, and this force way makes the vibration amplitude of wire side be maximum.The utility model designs the vibration damping spoke of rigidity, and joins with net is sticking, can reduce the wire side amplitude significantly, prolongs the life-span of screen cloth; And help passing to wire side to the high frequency microseism of little vibrating device under the screening machine, improve screening efficiency.Because of microseism passes to rack through cushion, finally pass to a little less than the microseism of wire side.This design only is suitable for 100 ~ 300 purpose mesh screen branches, but high order is counted the still network blocking easily of screening of net.
Further, Fig. 5 is a kind of vibration damping wire side design of having disposed the Ultrasonic On-line cleaning function.In this structure, outer rectangle rack, interior looped network frame and wire side are sticking to be joined, and outer rectangle rack links to each other through suitable secondary vibration damping bar again with interior looped network frame simultaneously, and this design makes:
1), wire side can significantly reduce Oscillation Amplitude, prolongs the life-span of screen cloth;
2), the high-frequency vibration of ultrasonic generation can pass to wire side through rack, makes screen cloth possess online self-cleaning function, avoids mesh obstruction in the screening process, thereby has further improved screening efficiency; Adopt secondary vibration damping spoke can further improve the efficient of ultrasonic transducer;
3), dispose the power that ultrasonic rack can further reduce the little vibrating device in straight line shaker bottom of the utility model.
Facts have proved that through the Vibration Absorption Designing of wire side, make the application of high order number sieve net on straight line shaker become a reality, the clear net of Ultrasonic On-line has further improved screening efficiency.The utility model; Not only changed the design concept of screening plant; Material sieving technology is developed to directions such as energy-conservation, efficient, screen cloth longer service life; Change the design concept of traditional line sieve, the screening function of straight line shaker is expanded to the superfine powder screening, created a kind of screening plant of efficient, energy-conservation, cost-saving simultaneously.
Through this a series of utility models and design; Make and can use the straight line shaker of the utility model at present the thinnest commercially available net (625 order) carries out the powder screening; With traditional straight line shaker, revolve and shake sieve and compare (their best simple function is compared with the function of the utility model straight line shaker) with revolving of the belt transect ultrasonic cleaning function sieve that shakes; Under the prerequisite of same powder screening flow (as 80kg/ hour); Newton's efficient (in the fine powder amount/mixed powder that at every turn is sized out in the mixed powder actual contained fine powder total amount) of screening can be brought up to more than 90% from original 30 ~ 70%; Prolong the service life of screen cloth more than 10 times, sieve required electric power energy consumption and be merely original 7 ~ 15%.At last, be pointed out that also that make the utility model straight line shaker with same sieving capacity, its material consumption is merely 1/4 ~ 1/3 of other types screening machine.So the straight line shaker of the utility model is a huge innovation in the screening plant, have the very high efficiency and the economic implications of reality.
Description of drawings
Fig. 1 is the particle driving force direction movement locus (main body: the level curve centrifugal motion) that existing circle shakes and sieves;
Fig. 2 is the particle driving force direction and the movement locus (main body: the movement of falling object of wire side direction parabola) of existing straight line shaker;
Fig. 3 is the straight line shaker extension set structural representation of the utility model;
Fig. 4 is the vibration damping width of cloth grid structure sketch map with microseism propagation function;
Fig. 5 is the vibration damping width of cloth grid structure sketch map with ultrasonic wire side cleaning device.
Among the figure: 1 charging aperture, 2 dispersal of feed devices, 3 screen clothes, the particle of 4 projectile motions, the particle that 5 rollings are advanced, 6 vibratory sieves lid; 7 racks, the outer rectangle rack of 7-1,7-2 wire side, 7-3 vibration damping spoke, 7-4 rounding arc angle structure, 7-5 meal particle blanking port; 7-6 one-level vibration damping spoke, looped network frame in the 7-7 secondary vibration damping spoke, 7-8,8 ultrasonic transducers, 9 observation windows, 10 micro-vibration motors; At the bottom of 11 vibratory sieves, the outlet of 13 fine powders, the outlet of 14 meal, 15 meal discharging pockets, 16 lid hold-down mechanisms, 17 sealing gaskets; 18 install rotating shaft, 19 flexible connectors, 20 tilt adjustment mechanism, 21 screening under-chassis, 22 frames.
The specific embodiment
Below through specific embodiment, and combine accompanying drawing, the technical scheme of the utility model is further specified.The enforcement that should be appreciated that the utility model is not limited to following embodiment, and any pro forma accommodation and/or change that the utility model is made all will fall into the utility model protection domain.
1, used high frequency microseism width of cloth notion in the utility model: the high frequency notion and the amplitude of two atomic type motors: generally speaking; The vibrating motor that conventional straight line shaker uses is generally 4 utmost points or 6 utmost point motors; Velocity of rotation is 1450rpm or 960rpm, and corresponding mechanical oscillation frequency is: 1450Hz and 960Hz; And employed miniature vibrating motor in the utility model is 2 utmost point motors, and rotating speed is 2900rpm, and the frequency of motor driving and generating is 2900Hz so thus; Simultaneously, the microseism motor power is little, and amplitude is also little.The vibration frequency of electromagnetism silo-wall shaker also is 3000Hz; The wire side amplitude that generally revolves the sieve that shakes is greater than 2mm; The wire side amplitude of straight line shaker is 3 ~ 5mm; And the wire side amplitude when adopting miniature two utmost point vibrating motors or the electromagnetism hopper wall vibrator of the utility model is less than 1mm;
2, the frequency of ultrasonic vibrations and amplitude: employed ultrasonic transducer 8 in the utility model, its frequency is generally 20 ~ 40 kHz, and vibration amplitude is the high frequency microseism of real meaning less than 25 μ m.The straight line shaker result of use of the utility model is best when adopting ultrasonic high frequency microseism device.
Embodiment 1
The meticulous straight line shaker extension set of a kind of energy-conservation, efficient, the little vibration shape (following examples abbreviation straight line shaker) as shown in Figure 3; Comprise frame 22, screen cloth 3, be used for fixing rack 7, the charging aperture 1 of screen cloth 3; At the bottom of meal outlet 14, vibratory sieve lid 6 and observation window 9 and the vibratory sieve 11; Rack 7 is installed at the bottom of vibratory sieve lid 6 and the vibratory sieve between 11, respectively by sealing gasket 17 sealings, is fixed on the frame below at the bottom of the vibratory sieve and is provided with fine powder outlet 13; Charging aperture 1 is arranged on vibratory sieve and covers 6 tops, and meal outlet 14 is arranged on a side of frame.The vibration damping spoke 7-3 that can reduce screen cloth wire side amplitude is set on the described rack 7.11 are compressed by lid hold-down mechanism 16 at the bottom of vibratory sieve lid 6 and the vibratory sieve, and lid hold-down mechanism 16 can be simple bolt connecting mechanism, is routine techniques, does not do tired stating at this.
Charging aperture 1 below is provided with a dispersal of feed device 2, and the powder particle material is evenly disperseed at charging aperture 1; 11 are provided with the little vibrating device of high-frequency micro-amplitude at the bottom of the vibratory sieve.Described meal outlet 14, fine powder outlet 13 are positioned at the bottom of straight line shaker, and the position is staggeredly arranged, and is independently divided on the space; The two ends, both sides of described frame 22 are provided with 4 installation rotating shafts 18 that under-chassis or hitch can be installed; Install between rotating shaft 18 and the screening under-chassis 21 flexible connector 19 is set; Flexible connector can make the part of screening machine pin more than 21 under the driving of the little vibrating device of high-frequency micro-amplitude, produce effective microseism; And pass to the screening under-chassis the vibrations effective attenuation; But energy loss is little, and flexible connector can also effectively reduce the vibrating noise of machine.The tilt adjustment mechanism 20 of regulating frame 22 gradients is set on the screening under-chassis of the same end in vibratory sieve frame both sides; In order to regulate inclination in the running direction and the left and right sides levelness of wire side 7-2; To guarantee that powder is uniformly dispersed mobile on wire side 7-2; Tilt adjustment mechanism can adopt conventional spiral lifting structure, and the emphasis that non-the utility model institute will describe is not done to tire out at this and stated.
Can see among Fig. 3; The utility model device is when screening work; The powder particle of different-grain diameter size is done projectile motion (particle 4 of projectile motion) and/or roll (particle 5 that rolling is advanced) travels forward from charging aperture 1 on screen cloth under microseism driving force and gravity effect that micro-vibration motor 10 and/or ultrasonic transducer 8 produce.Online coarse granule powder moves to meal particle blanking port 7-5 from charging aperture, through meal discharging pocket 15, flows out from meal outlet 14 at last; Fine particle sieves from the wire side 7-2 of screen cloth 3 under the effect of high frequency microseism power, drops at the bottom of the vibratory sieve 11, fall under the microseism power effect by the mini vibrator of gravity and vibratory sieve bottom again, after fine powder outlet 13 flow out from vibratory sieve.The thickness mixed powder that flows into from charging aperture like this, the mesh size according to screen cloth 3 is become coarse dispersion and fine powder body by sub-sieve.
The little vibrating device of high-frequency micro-amplitude is one or both the combination in ultrasonic transducer, micro-vibration motor or the electromagnetism hopper wall vibrator of power 10 ~ 100W.Among Fig. 3, be fixed with micro-vibration motor 10 on 11 at the bottom of the vibratory sieve, be fixed with ultrasonic transducer 8 on the rack 7.As requested, also can be the little vibrating device of a kind of high-frequency micro-amplitude to be set at the bottom of the vibratory sieve and ultrasonic transducer 8 is not set on the rack 7.
Rack 7 is a kind of vibration damping width of cloth racks that can transmit microseism, and screen cloth 3 is fixed on the rack 7, and rack 7 is a frame structure, and a side of rack 7 is provided with meal particle blanking port 7-5.Four inboard angles of rack main body are rounding arc angle structure 7-4.This structure designs for anticracking, make screen cloth throw the net with use in corner stressed evenly, avoid rack under vibrating state, to produce the crack, thereby prolonged the service life of screen cloth.
The described vibration damping width of cloth of the utility model rack has two kinds of structures.A kind of structure is seen Fig. 4, and vibration damping spoke 7-3 is the latticed inboard that is fixed on rack.Vibration damping spoke and wire side adopt the glue adhesion in this structure.
Another kind of structure is seen Fig. 5, and this rack with vibration damping width of cloth function is made up of an outer rectangle rack 7-1 and an interior looped network frame 7-8, and outer rectangle rack is to be connected by two-stage vibration damping spoke with interior looped network frame.The vibration damping spoke comprises one-level vibration damping spoke 7-6 and secondary vibration damping spoke 7-7; The end of described one-level vibration damping spoke 7-6 is fixed on the interior looped network frame 7-8; The other end is vertically fixed on the middle part of secondary vibration damping spoke 7-7; The two T-shaped connection, the two ends of secondary vibration damping spoke 7-7 are fixed on two angles of outer rectangle rack 7-1, and described interior looped network frame 7-8 goes up fixing ultrasonic transducer 8.This structure China and foreign countries' rectangle rack and interior looped network frame and wire side are sticking the couplets, and vibration damping spoke and wire side are not sticking to be joined.The high frequency microseism of ultrasonic transducer generating passes to wire side through interior looped network frame; Make wire side have the ultrasonic cleaning function; And secondary vibration damping width of cloth bar has not only been isolated other significantly mechanical oscillation of straight line shaker, and the high frequency microseism energy that ultrasonic transducer 8 is produced is fully used.
In order to realize screening effect preferably, preferred plan is, wire side horizontal tilt angle α is 7 ° ~ 20 °, and horizontal tilt angle β is 20 ° ~ 35 ° at the bottom of the vibratory sieve.Preferred as further, the angle of α and β is respectively 16 ° and 30 °.
Embodiment 2
A wire side is of a size of the straight line shaker of 800x1200mm, and concrete structure adopts the vibration damping width of cloth net among Fig. 4 with embodiment 1, uses 200 eye mesh screens, fixing one 120 watts two utmost point vibrating motors at the bottom of the vibratory sieve, and promptly the general power of screening machine is 120 watts.
Embodiment 3
A wire side is of a size of the straight line shaker of 800x1200mm, and concrete structure adopts the vibration damping width of cloth net among Fig. 4 with embodiment 1, uses 200 eye mesh screens, adopts one 30 watts electromagnetism hopper wall vibrator at the bottom of the vibratory sieve.
Embodiment 4
A wire side is of a size of the straight line shaker of 600x1000mm; Concrete structure adopts the vibration damping width of cloth net with ultrasonic cleaning function among Fig. 5 with embodiment 1, and the ultrasonic transducer of 50 watts of 35 kHz has been installed on the promptly interior looped network frame; Use 500 eye mesh screens; Also adopt one 80 watts ultrasonic transducer at the bottom of the vibratory sieve, general power is 130 watts, can support the superfine powder screening operation of 80kg/h continuously.
Embodiment 5:(powder granule is irregularly shaped powder) used in the water-atomized iron powder screening
Be of a size of the straight line shaker of 700x1100mm with a wire side, concrete structure adopts the common amount of decrease 200 order wire sides among Fig. 4 with embodiment 1; Two utmost point vibrating motors of a 120W are installed at the bottom of the vibratory sieve, and wire side horizontal tilt angle α is 16 ° of (see figure 3)s, and horizontal tilt angle β is 30 ° at the bottom of the vibratory sieve; Inlet adopts " people " font voluminous powder disperser; Can realize continuous screening at powder mass flow during for 150kg/H, the meal rate of discharge is 38.5 kg/h, and the fine powder rate of discharge is 111.5 kg/h.Through granularity Detection, sift out 21.8% fine powder of still having an appointment in the meal, newton's efficient of screening is: 1-(38.5x0.218/ (38.5x0.218+111.5)=93.0%.
Shown in Figure 5 when having the vibration damping width of cloth net of ultrasonic cleaning shock-absorbing function when adopting, change a 75W two utmost point vibration motors at the bottom of the screening machine into, the screening efficiency of equipment reaches 99.6%.
And adopting similar generic linear sieve (power 1.1x2=2.2kW), screening efficiency is merely 85%; Net width of cloth diameter is 1 meter the revolve sieve (power 1.5kW) that shakes, and screening efficiency is 89%, revolves to add on the screen cloth face that shakes that screening efficiency is 95.2% behind the ultrasonic cleaning equipment.
It is thus clear that in the screening of the thicker irregularly shaped powder of particle, the screening efficiency of the utility model straight line shaker is far above other same categories of device, and energy consumption is merely about 10% of other equipment.
Embodiment 6:The screening efficiency compare test
A wire side is of a size of the linear shock sieve of 650x1000mm; Concrete structure is with embodiment 1; Adopt 325 eye mesh screens, vibration damping width of cloth rack to adopt shown in Figure 5 having in the ultrasonic cleaning at the bottom of looped network frame, the vibratory sieve 75 watt of two utmost point vibrating motor to be set; Sieve spherical 304 powder of stainless steel of atomizing, can support the powder mass flow of 120 ~ 130 kg/h continuously, not network blocking.One time screening efficiency reaches 98.5%;
And the wire side diameter that adopts ultrasonic cleaning equally is 1 meter the revolves sieve that shakes, its screening efficiency is merely 93.8%, sieves to begin network blocking after 2 hours, and the power of motor of screening machine is 1.1kW.
Embodiment 7:High mesh is counted test comparative lifetime of net
Under embodiment 6 conditions, under moving 16 hours conditions every day, the life-span of the straight line screen cloth of the utility model is 48 days; The screen life-span that revolves the sieve that shakes is 7 days.
Embodiment 8:High mesh is counted test comparative lifetime of net
A wire side is of a size of the linear shock sieve of 650x1000mm; Concrete structure is with embodiment 1; At the bottom of adopting 625 eye mesh screens, the ultrasonic vibration damping width of cloth net with microseism propagation function shown in Figure 5, vibratory sieve 75 watt of two utmost point vibrating motor is set; Sieve the spherical tin alloy powder of atomizing, can support the powder mass flow of 60 ~ 70 kg/h continuously, move 8 hours and begin to occur slight network blocking phenomenon; Move 1 month, wire side is not lax;
As relatively, be 0.9 meter the revolve sieve that shakes and adopt the wire side diameter of ultrasonic cleaning equally, 625 eye mesh screens are installed, move 2 hours and begin to occur heavier network blocking phenomenon; Move 4 days, wire side is lax to be scrapped.
Embodiment 9: the Dust Capacity that leaks test
Straight line shaker is because the input of very little energy, very little vibration amplitude, the dust that reduces screening machine leak aspect very effectively.As at a 9m
2Cubicle in the SiC powder of 325 purpose screen clothes screenings, use respectively among the embodiment 6 straight line shaker with revolve the sieve that shakes, after through 8 hours continuous screening, when using straight line shaker, the Dust Capacity that leaks is 110 to restrain; And with revolving when sieve of shaking, the Dust Capacity that leaks is 3550 grams.
Embodiment 10:The Dust Capacity that leaks test
Under the condition of embodiment 9, be that the atomizing Sn63Pb37 alloy powder of 32 μ m is done plumbous leakage compare test to particle mean size again.Test the atmosphere pollutants emission standards that adopts country relevant, the result after 4 hours does in operation, and in the closed room, plumbous concentration is 4.5 μ g/ m in the air of use straight line shaker
3, plumbous concentration is 121 μ g/ m in the room air of revolving the sieve that shakes and adopt
3
Embodiment 11:The noise compare test
Under the condition of embodiment 6, the noise test the when environment of 1 meter of screening machine distance is done the equipment operation, the result is: the noise of straight line shaker is 53 decibels, the noise that revolves the sieve that shakes is 75 decibels.
Embodiment 12:The vibration oxidation compare test of powder
Wire side is of a size of 600x1100mm, install that 70 watts of vibration motors, wire sides are installed at the bottom of vibration damping width of cloth net shown in Figure 4, the vibratory sieve is that 400 purpose straight line shakers and same wire side diameter that vibration damping width of cloth net shown in Figure 4 is installed are that 900mm, vibration motor power are that 400 orders of 1.1kW revolve the sieve that shakes; The screening particle mean size is the soldering powder of 35 μ m under 80 kg/h flow condition, when using straight line shaker on the screen cloth under powder and the screen cloth oxygen content increase of powder be respectively 4.2ppm and 6ppm; And with revolving when sieve of shaking, on the screen cloth under powder and the screen cloth oxygen content increase of powder reach 13.5ppm and 18.1ppm respectively.The friction of powder particle significantly reduced when explanation was sieved in the straight line shaker of the utility model, straight line shaker the protection powder the surface and anti-oxidation aspect obvious effect is arranged.
Embodiment 13:The cost of manufacture comparative analysis
Under equal screening energy condition, be the straight line shaker of example with embodiment 12, its integral device weight is 42 kg, and individual layer to revolve the weight of the sieve that shakes be 125 kg, the manufacturing of the straight line shaker of visible the utility model is the economical with materials cost significantly.
Claims (10)
1. meticulous straight line shaker extension set of energy-conservation, efficient, the little vibration shape; Comprise frame, at the bottom of charging aperture, meal outlet, screen cloth, the rack that is used for fixing screen cloth, the vibratory sieve, be fixed on the frame below at the bottom of the vibratory sieve and be provided with the fine powder outlet; Charging aperture is arranged on the frame top; Meal outlet is arranged on a side of frame, it is characterized in that: the vibration damping spoke that can reduce screen cloth wire side amplitude is set on the described rack, the little vibrating device of high-frequency micro-amplitude is set at the bottom of the vibratory sieve.
2. the meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape according to claim 1 is characterized in that: the little vibrating device of described high-frequency micro-amplitude is one or both the combination in ultrasonic transducer, micro-vibration motor or the electromagnetism hopper wall vibrator of power 10 ~ 150W.
3. the meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape according to claim 1, it is characterized in that: described screen cloth is fixed on the rack, and rack is a frame structure, and a side of rack is provided with meal particle blanking port.
4. the meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape according to claim 3, it is characterized in that: described rack main body is a rectangular frame, inboard four angles of rectangular frame are rounding arc angle structure.
5. the meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape according to claim 4, it is characterized in that: described vibration damping spoke is the latticed inboard that is fixed on rectangular frame.
6. according to claim 1 or the meticulous straight line shaker extension set of 2 or 3 or 4 described a kind of energy-conservation, efficient, little vibration shapes; It is characterized in that: described rack is made up of an outer rectangle rack and an interior looped network frame, and outer rectangle rack is connected by the vibration damping spoke with interior looped network frame.
7. the meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape according to claim 6; It is characterized in that: described vibration damping spoke comprises one-level vibration damping spoke and secondary vibration damping spoke; On the looped network frame, the other end was vertically fixed on secondary vibration damping spoke middle part, the two T-shaped connection in one end of described one-level vibration damping spoke was fixed on; And the two ends of secondary vibration damping spoke are fixed on two angles of outer rectangular frame, on the described interior looped network frame ultrasonic transducer are installed.
8. according to claim 1 or the meticulous straight line shaker extension set of 2 or 3 or 4 described a kind of energy-conservation, efficient, little vibration shapes, it is characterized in that: screen cloth wire side horizontal tilt angle α is 7 ~ 20 °, and horizontal tilt angle β is 20 ~ 35 ° at the bottom of the vibratory sieve.
9. the meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape according to claim 6 is characterized in that: be fixed with the micro-vibration motor at the bottom of the vibratory sieve, on the described interior looped network frame ultrasonic transducer be set.
10. the meticulous straight line shaker extension set of a kind of energy-conservation, efficient, little vibration shape according to claim 1; It is characterized in that: frame both sides close end is provided with four screening under-chassis; The screening under-chassis links to each other with frame through flexible connector, is positioned on two screening under-chassis of charging aperture one side the tilt adjustment mechanism that is used to regulate rack inclining degree α angle is installed.
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| CN 201220144626 CN202570594U (en) | 2012-04-09 | 2012-04-09 | Energy-saving high-efficiency micro-vibration type fine linear screening machine |
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| CN 201220144626 CN202570594U (en) | 2012-04-09 | 2012-04-09 | Energy-saving high-efficiency micro-vibration type fine linear screening machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626691A (en) * | 2012-04-09 | 2012-08-08 | 陈新国 | Energy-saving, highly-efficient and microvibration-type fine linear sieving machine |
| CN103430916A (en) * | 2013-09-09 | 2013-12-11 | 于大国 | Automatic adjustable powder spreading tool with PWM (Pulse Width Modulation) technology |
| CN103752392A (en) * | 2013-12-27 | 2014-04-30 | 金川集团股份有限公司 | Device for separating and fluidizing powder material |
| CN106064147A (en) * | 2016-07-20 | 2016-11-02 | 柳州六品科技有限公司 | A kind of adjustable for height vibrosieve |
| CN107694664A (en) * | 2017-11-22 | 2018-02-16 | 河南工业大学 | A kind of grain efficiently beats stone roller Brush screen combined machine |
-
2012
- 2012-04-09 CN CN 201220144626 patent/CN202570594U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626691A (en) * | 2012-04-09 | 2012-08-08 | 陈新国 | Energy-saving, highly-efficient and microvibration-type fine linear sieving machine |
| CN103430916A (en) * | 2013-09-09 | 2013-12-11 | 于大国 | Automatic adjustable powder spreading tool with PWM (Pulse Width Modulation) technology |
| CN103752392A (en) * | 2013-12-27 | 2014-04-30 | 金川集团股份有限公司 | Device for separating and fluidizing powder material |
| CN106064147A (en) * | 2016-07-20 | 2016-11-02 | 柳州六品科技有限公司 | A kind of adjustable for height vibrosieve |
| CN107694664A (en) * | 2017-11-22 | 2018-02-16 | 河南工业大学 | A kind of grain efficiently beats stone roller Brush screen combined machine |
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