CN105536957B - A kind of impeller and connected superfine pulverizer, System of Ultra Thin Power Rubbing - Google Patents
A kind of impeller and connected superfine pulverizer, System of Ultra Thin Power Rubbing Download PDFInfo
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- CN105536957B CN105536957B CN201610058680.1A CN201610058680A CN105536957B CN 105536957 B CN105536957 B CN 105536957B CN 201610058680 A CN201610058680 A CN 201610058680A CN 105536957 B CN105536957 B CN 105536957B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
Abstract
本发明提供了一种叶轮、应用该叶轮的超细粉磨机，以及包括该超细粉磨机的超细粉磨系统。其中，叶轮包括如下结构：轮盘、表面附着有耐磨层的直面型叶片和直面型冲击板；直面型叶片为多个，且均匀地径向设置于轮盘上；在沿从轮盘的中心向外径边缘的延伸方向上，每个直面型叶片的尾端均设置有直面型冲击板，且直面型叶片与直面型冲击板之间形成第一夹角；直面型叶片的尾端位于轮盘的外径边缘以内；直面型冲击板的起始端与直面型叶片的尾端连接，直面型冲击板的尾端超出于轮盘的外径边缘。通过本发明能够将硬度较高的非金属或金属研磨成超细粉末，且设备部件磨损小，具有粒度分级功能。
The invention provides an impeller, an ultrafine grinding machine using the impeller, and an ultrafine grinding system including the ultrafine grinding machine. Among them, the impeller includes the following structure: a disc, a straight-faced blade with a wear-resistant layer attached to the surface, and a straight-faced impact plate; there are multiple straight-faced blades, and they are evenly arranged radially on the disc; In the extension direction from the center to the outer diameter edge, the tail end of each straight-faced blade is provided with a straight-faced impact plate, and a first angle is formed between the straight-faced blade and the straight-faced impact plate; the tail end of the straight-faced blade is located at Within the outer diameter edge of the wheel disc; the starting end of the straight-facing impact plate is connected to the tail end of the straight-facing blade, and the tail end of the straight-facing impact plate exceeds the outer diameter edge of the wheel disc. The invention can grind the non-metal or metal with higher hardness into superfine powder, and the wear of equipment parts is small, and it has the function of particle size classification.
Description
Technical field
The present invention relates to superfines manufacture field, the connected superfine pulverizer, ultra-fine of espespecially a kind of impeller and the application impeller
Grinding system.
Background technology
In superfines manufacture field, using physical method process superfines equipment mainly have airslide disintegrating mill,
Vibromill, ball mill, Ball-stirring mill, colloid mill and mechanical impact crusher etc..
Wherein, airslide disintegrating mill utilizes gases at high pressure, produces jet-stream wind by nozzle, caused kinetic energy makes particle mutual
Collision, impact, rub, shear and realize ultra-fine grinding.But it is this by way of gas transmits kinetic energy solid particles, make
Solid particle kinetic energy it is limited, therefore, single machine yield is low, high energy consumption.
Vibromill is the research of super-pine crush equipment using ball or rod as medium.Medium can make the thing less than 2mm in grinding machine internal vibration
Feed powder is broken to a few micrometers.It has the advantages that efficient, energy-conservation, saving space, product granularity are uniform, but due to the processing shape of medium
Shape is limited, and inevitable to produce abrasion, so as to influence the purity of product, energy consumption is also higher.
Ball mill is by mutually rolling the effect of hitting between abrading-ball and between abrading-ball cylinder body, crashing the powder particle of contact abrading-ball
Or grind, while mixture is uniformly dispersed in the space of ball by turbulence immixture and mutually coat, and make
Surface-active reduces, reunite and reduce, and then promote crushing to continue down, can dry grind, wet-milling, vacuum mill, abrasive product
Minimum particle size can be to 0.1 μm, but this mode impurity is more, high energy consumption.
Ball-stirring mill is to move abrasive media using agitating device and produce impact, shearing, abrasive action, so as to crushed material
The equipment of material.The power of Ball-stirring mill input is directly used in the rotation of rabbling mechanism, abrasive media is moved and comminuting matter, therefore its
Energy efficiency is higher than ball mill and vibromill.
There is the fixed tooth for turning tooth and matching in colloid mill, one of to rotate at a high speed, another is static, and material to be machined passes through
Weight or the external pressure pressurization of itself produce downward spiral impulsive force, through it is fixed, turn the gap between tooth when, by powerful
Shearing force, frictional force, dither, the physical action such as high speed vortex, material is effectively emulsified, scattered, homogeneous and powder
It is broken.But turn tooth and fixed tooth one at a high speed rotation, another is static, often wear.
Mechanical impact crusher be utilize around horizontally or vertically impact components on axle high speed gyrator (rod, blade,
Tup etc.) impact of fierceness is imposed to material, and it produced the brute force attack of high frequency between stator and between material, cut
The effect of cutting etc. and the equipment crushed.
Fan mill is typical mechanical impact crusher, and the impeller with 8~10 blades is with 750~1500r/min
Rotate at a high speed, coal is worn into the high speed coal mill of coal dust using the fan-type impact impeller of high speed rotation, is mainly used in grinding height
Moisture brown coal powder, run coal powder.
The also high-speed eddy pulverizers different from general pulverizer, for example, Chinese patent CN1929925B discloses one
Kind " high turbulence mill and its bi-negative pressure turbine ", using the bi-negative pressure turbine of particular design, under the driving of motor, in mill chamber
Portion produces vortex and turbulent flow, so as to form two phase flow.Material is in the presence of turbulent flow, mutual autogenous grinding, produces head-on collision and shearing is made
Firmly, so as to ground material.It is main or further ultra-fine to material by impact tooth plate but the grindability of its turbulent flow is limited
Crush.
No matter fan mill, or the mechanical shock pulverizer such as high-speed eddy pulverizers, when crushing the high material of hardness, such as
The impact components serious wear such as quartz, ore and metal etc., rod, blade, tup, impact tooth plate, can not ensure for a long time
Continuous work.
The content of the invention
It is an object of the invention to provide a kind of impeller, and the wear-resisting degree of its impact components is higher, is especially crushing height firmly
When spending material.
It is a further object of the present invention to provide a kind of connected superfine pulverizer using foregoing impeller, and it can be higher by hardness
Nonmetallic or metal grinding is into superfines, and part of appliance abrasion is small, has grading function.
Another object of the present invention is to provide a kind of System of Ultra Thin Power Rubbing for including foregoing connected superfine pulverizer.
Technical scheme provided by the invention is as follows：
A kind of impeller, it includes：
Wheel disc, face type blade directly and face type shock plate directly；And described face type blade directly and described face meeting for type shock plate directly
The surface attachment of wind side has wearing layer；
The type blade of facing directly is arranged on the wheel disc to be multiple along the direction dissipated to the periphery from center；
Along from the direction that the center of the wheel disc extends to the periphery, each tail end for facing type blade directly is respectively provided with
Have it is described face type shock plate directly, and described face type blade directly and described face directly forms the first angle between type shock plate；
The tail end for facing type blade directly is located within the radial outer edge of the wheel disc；
The initiating terminal for facing type shock plate directly is connected with the tail end for facing type blade directly, the type shock plate of facing directly
Tail end exceeds the radial outer edge of the wheel disc.
Preferably, the type blade radial of facing directly is arranged on the wheel disc；
And/or；
The tangential direction that type blade is faced directly along wheel disc concentric circles is arranged on the wheel disc.
Preferably, the wearing layer is the wear plate of composite；
And/or；
The wearing layer is coated on described face directly on type blade and the whole outer surfaces for facing type shock plate directly；
And/or；
First angle is 120-180 °.
Preferably, the type blade of facing directly is only arranged on a side surface of the wheel disc；
The type shock plate of facing directly extends to another side surface from a side surface of the wheel disc.
Preferably, the wheel disc is being provided with least one balance pipe close to the position of the wheel disk center.
Present invention also offers a kind of connected superfine pulverizer, and it includes：
Drive device, the entrance side end cap provided with charging aperture, the outlet side end cap provided with discharging opening and annular interior saw
Gear ring, and the entrance side end cap, the outlet side end cap, the interior sawtooth corral are set as a chamber；
And rotatably arranged with there is impeller as the aforementioned in the chamber, the impeller is connected with the drive device, and
Rotated by drive device driving；
And the interior sawtooth circle be located at the impeller the periphery for facing type shock plate directly, the crown end of the interior sawtooth circle with
The tail end for facing type shock plate directly forms one between the interior sawtooth circle and the impeller and is used to grind at a distance of a distance
Space；
Material enters the chamber from the charging aperture, and reaches the discharging opening behind the space for being used to grind.
Preferably, the sawtooth angle of the interior sawtooth circle is 60-120 °；
And/or；
The sawtooth of the interior sawtooth circle includes windward side and lee face, the windward side and footpath according to the rotation direction of impeller
It is the second angle to the angle in direction, the angle of the lee face and radial direction is the 3rd angle, and second angle is small
In the 3rd angle；
And/or；
The surface attachment of the interior sawtooth circle has wearing layer.
Preferably, the outlet side end cap further comprises inboard partition and outside end cap, the inboard partition close to
The interior sawtooth circle side is set；
The spin chamber of an annular is formed between the inboard partition and the outside end cap, and the entrance of the spin chamber is with setting
The chamber of impeller is put, the outlet of the spin chamber connects with the discharging opening.
Preferably, the entrance of the spin chamber is annular inlet；
And/or；
Revolution tangential direction of the outlet of the spin chamber along spin chamber is set.
Preferably, the bottom of the spin chamber is provided with the first slag mouth.
Preferably, the bottom of the interior sawtooth circle is provided with the second slag mouth；
And/or；
The outside of the interior sawtooth circle is coated with heat-conducting layer.
Present invention also offers a kind of System of Ultra Thin Power Rubbing, and it includes：
Charging gear, foregoing connected superfine pulverizer, the air-blast device positioned at feed side or the blower unit positioned at exit side,
Gas-solid separating device；
The charging gear connects with the charging aperture of the connected superfine pulverizer；
The air-blast device connects with the charging aperture of the connected superfine pulverizer；Or the blower unit with it is described ultra-fine
The discharging opening connection of flour mill；
The entrance of the gas-solid separating device connects with the discharging opening of the connected superfine pulverizer.
By impeller provided by the invention and connected superfine pulverizer, System of Ultra Thin Power Rubbing, following at least one can be brought to have
Beneficial effect：
1st, it can grind that hard is nonmetallic or hard metal, and the finished powder purity obtained after processing is high.Simultaneously because
Equipment is attached with wearing layer, can greatly reduce abrasion.
2nd, grinding effect can be improved by many places structure.(1) impeller faces type blade directly, faces type shock plate, interior saw directly
The surface of gear ring is attached with wearing layer, and because wearing layer is mostly that composite is made, its surface is smooth, the friction with storeroom
Power is small, faces type blade directly so as to reduce, faces frictional force between type shock plate and material directly, substantially reduces the abrasion of wearing layer,
And positive impact is increased, grinding effect can be effectively improved.(2) sawtooth angle of interior sawtooth circle is 60-120 °, is compared
For the smaller sawtooth of angle in the prior art, it is not easy to that crown end crumbles in grinding, while can also be material
Grain provides crash direction more vertical striking face so that material particles tend to, from the frontal impact flank of tooth, increase impact, carry
High grinding effect.(3) relative motion of type shock plate and interior sawtooth circle is faced directly so that medium fluid and the material being ground
Grain, in the space faced directly between type shock plate and interior sawtooth circle, the non-homogeneous two-phase multi-fluid of complexity is formed, is sent out between particle
Raw collision, mutual phase grinding.Meanwhile medium fluid and material particles change the direction of motion after serrated surface is collided, and move
Hop occurs in speed so that the speed of related movement being changed between the medium fluid of the direction of motion and other medium fluids increases
Greatly, and be changed between the material particles of the direction of motion and unclassified stores particle speed of related movement increase, so as to enter one
Step cause space in medium fluid and material particles suppressed contracting indirectly, increase material particles interaction probability and by force
Degree, and then improve grinding effect.
3rd, impeller is set only on a side surface of wheel disc and faces type blade directly, and so when wheel rotation, wheel disc one side is set
Put the type blade of facing directly just can form bigger pressure difference between the charging aperture side of wheel disc and discharging opening side, so as to be more easy to guide
Material is from the charging aperture lateral movement of wheel disc to facing directly at type shock plate, and around the end of wheel disc, the rear discharging opening for reaching wheel disc
Side.
4th, by setting slag mouth to realize the grading function of material in the bottom of interior sawtooth circle and spin chamber, in classification
During, on the one hand on the other hand slag mouth can also be fallen big by slag mouth come the impurity in material separating
Powder collection simultaneously returns to charging aperture and recirculates grinding again.
Brief description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, to a kind of impeller and superfine grinding
Machine, above-mentioned characteristic, technical characteristic, advantage and its implementation of System of Ultra Thin Power Rubbing are further described.
Fig. 1 is the structural representation that a kind of embodiment of impeller of the present invention is watched from charging aperture side；
Fig. 2 is the structural representation that impeller shown in Fig. 1 is watched from discharging opening side；
Fig. 3 is a kind of exploded view of embodiment of connected superfine pulverizer of the present invention；
Fig. 4 is the profile of the connected superfine pulverizer shown in Fig. 3；
Fig. 5 is a kind of schematic diagram of embodiment of interior sawtooth circle in connected superfine pulverizer of the present invention；
Fig. 6 is a kind of schematic diagram of embodiment of spin chamber in connected superfine pulverizer of the present invention；
Fig. 7 is the structural representation that another embodiment of impeller of the present invention is watched from charging aperture side；
Fig. 8 is using high-purity quartz of the present invention to particle diameter between the mesh (250 microns~125 microns) of 60 mesh~120
After being ground, obtained histogram of particle size distribution；
Fig. 9 is using high-purity quartz of the present invention to particle diameter between the mesh (250 microns~125 microns) of 60 mesh~120
After being ground, a kind of obtained electron microscope display figure；
Figure 10 is Fig. 9 another electron microscope display figure；
Figure 11 is to apply the present invention to full-size after the silicon steel sheet within 3mm is ground, obtained one kind electricity
Sub- microscopy figure；
Figure 12 is Figure 11 another electron microscope display figure；
Figure 13 is Figure 11 another electron microscope display figure.
Drawing reference numeral explanation：
G- feed sides；F- rotation directions；H- material movements direction；The angles of A- first；B- sawtooth angles；The angles of C- second；
The angles of D- the 3rd；
1- wheel discs；The import side surface of 101- wheel discs；The outlet side surface of 102- wheel discs；The radial outer edge of 103- wheel discs；
104- concentric circles；
2- faces type blade directly；201- faces the initiating terminal of type blade directly；202- faces the tail end of type blade directly；
3- faces type shock plate directly；301- faces the initiating terminal of type shock plate directly；302- faces the tail end of type shock plate directly；
4- balance pipes；5- motor shafts；6- charging apertures；7- entrance side end caps；8- discharging openings；
9- exports side end cap；901- inboard partitions；End cap on the outside of 902-；903- spin chambers；9031- the first slag mouths；
Sawtooth circle in 10-；1001- crowns end；1002- the second slag mouths；
11- is used for the space ground；12- cooling water flow conduits.
Embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
The embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically show in each figure, they are not represented
Its practical structures as product.In addition, so that simplified form readily appreciates, there is identical structure or function in some figures
Part, one of those is only symbolically depicted, or only marked one of those.Herein, "one" is not only represented
" only this ", the situation of " more than one " can also be represented.
In the embodiment one of impeller of the present invention, impeller includes：Wheel disc, face type blade directly and face type shock plate directly, wherein,
Face type blade directly and face type shock plate directly and be arranged on wheel disc.Compared to arc surface type blade commonly used in the prior art, the present invention
Face directly type blade and face directly type shock plate processing mode it is simple.Face type blade directly and face the windward side of type shock plate directly
Surface (being divided according to wheel rotation direction) is attached with wearing layer, and wearing layer, which can not only strengthen to face type blade directly and face type directly, to be rushed
The abrasivity of plate is hit, and because wearing layer is mostly that composite is made, such as hard alloy or polycrystalline diamond are (referred to as
) or polycrystalline cubic boron nitride (abbreviation PCBN) PCD.The surface of wearing layer is smooth, small with the frictional force of storeroom, straight so as to reduce
Face type blade, face frictional force between type shock plate and material directly, substantially reduce the abrasion of wearing layer, and increase positive hit
Power is hit, grinding effect can be effectively improved.And simultaneously because manufactured wearing layer is mostly sheet, extensibility is relatively low, thus by leaf
Piece and shock plate are designed as facing type directly and can also be easier in wearing layer described in surface attachment.In specific set, type blade is faced directly
To be multiple, and it is arranged at along the direction dissipated to the periphery from center on wheel disc, is preferably uniformly arranged, is easy to applied to ultra-fine
When in flour mill, material and dielectric gas to entrance carry out water conservancy diversion and evenly distributed, while Jie can be improved when impeller rotates
The pressure head of matter gas.Along from the direction that the center of wheel disc extends to the periphery, the tail end for each facing type blade directly is each provided with
One is faced directly type shock plate, and shape has angle between facing type blade directly and facing type shock plate directly, and the angle is formed at directly
Face type blade and the non-pressure face side for facing type shock plate directly.Face type blade directly and face this angle formula knot of type shock plate directly
Structure, enable to be faced directly the dielectric gas after type blade water conservancy diversion and material through facing type shock plate directly and change the direction of motion, enter
On the track of circular motion.Meanwhile the tail end for facing type blade directly is located within the radial outer edge of wheel disc；Face rising for type shock plate directly
Top is connected with facing the tail end of type blade directly, and the tail end for facing type shock plate directly exceeds the radial outer edge of wheel disc.
In above-described embodiment one, it can be radially arranged to face set-up mode of the type blade on wheel disc directly, such as Fig. 1 institutes
Show；Can also be arranged at along the tangential direction of wheel disc concentric circles on wheel disc, as shown in fig. 7, wherein, concentric circles 104 is virtual
Concentric circles, only to facilitate explanation, schematically draws in figure.Preferably, the diameter of a circle with one heart is less than wheel diameter
1/3rd.
On the basis of above-described embodiment one, it is preferable that face type blade directly and face type shock plate sealed set directly in wheel disc
On, avoid during material is stuck in and faces type blade directly, face the fine crack of type shock plate and wheel disc link position directly, while also do not interfere with leaf
The flow regime of dielectric gas during wheel rotation.
On the basis of above-described embodiment one, it is preferable that foregoing wearing layer is not only attached to face type blade directly and faced directly
The side surface windward of type shock plate, but the whole outer surfaces of the two are further coated, it can preferably protect and face type blade directly
It is not worn with the structure everywhere for facing type shock plate directly.
On the basis of above-described embodiment one, it is preferable that the angle faced type blade directly and faced directly between type shock plate is
120-180°。
In above-described embodiment one, it is equipped with the both side surface of wheel disc and faces type blade directly and face type shock plate directly, at it
In his embodiment, it is preferable that set only on a side surface of wheel disc and face type blade directly, and the type shock plate of facing directly is then from wheel disc
One side surface extends to another side surface.When the impeller is applied in connected superfine pulverizer or other abrasive structures, set straight
The side surface of wheel disc one of face type blade is the surface of the charging aperture side of wheel disc, and so when wheel rotation, wheel disc one side sets straight
Face type blade just can form bigger pressure difference between the charging aperture side of wheel disc and discharging opening side, so as to be more easy to directing material
From the charging aperture lateral movement of wheel disc to facing directly at type shock plate, and around the end of wheel disc, the rear discharging opening side for reaching wheel disc.
In a specific embodiment of impeller of the present invention, reference picture 1,2, impeller includes wheel disc 1, faces the and of type blade 2 directly
Face type shock plate 3 directly, all surfaces for face type blade 2 directly, facing type shock plate 3 directly are attached with wearing layer.As shown in figure 1,
Feed side G sides, eight are evenly provided with the import side surface 101 of wheel disc face type blade 2 directly and (may be used also in other embodiments
To be other numbers), and this eight, which are faced directly type blade, is radially arranged on wheel disc, the initiating terminal 201 for facing type blade directly leans on
The center of wheel disc 1 is bordering on, the tail end 202 for facing type blade directly is no more than in the radial outer edge 103 of wheel disc.Face rising for type shock plate directly
Top 301 is connected with facing the tail end 202 of type blade directly, and extends to wheel disc 1 into the direction of the first included angle A along with facing type blade directly
In addition, the tail end 302 for facing type shock plate directly is made to exceed the radial outer edge 103 of wheel disc.As shown in Fig. 2 in the outlet side of wheel disc
On surface 102, and it is not provided with facing type blade 2 directly, but faces type shock plate 3 directly and extend to going out for wheel disc from the import side surface of wheel disc
Mouth side surface 102., can not only be by wheel disc meanwhile the position of the close wheel disk center in wheel disc 1 is provided with multiple balance pipes 4
The gas of outlet side is drawn back to entrance side, while when impeller is applied into connected superfine pulverizer or other abrasive structures, moreover it is possible to keep away
Exempt from the leakage of dielectric gas in the chamber of setting impeller, and avoid the entrance of extraneous air, influence the gas flowing in chamber.
Present invention also offers a kind of connected superfine pulverizer, and it applies impeller as the aforementioned.
In the embodiment one of connected superfine pulverizer of the present invention, reference picture 3, it includes：(the present embodiment is electricity to drive device
Machine, not shown in figure), the entrance side end cap 7 provided with charging aperture 6, in the outlet side end cap 9 provided with discharging opening 8 and annular
Sawtooth circle 10, and entrance side end cap 7, outlet side end cap 9, interior sawtooth circle 10 enclose and are set as a chamber.Foregoing impeller is rotationally
In the chamber, drive device is motor, and drives wheel rotation by the center of the insertion wheel disc 1 of motor shaft 5.Interior sawtooth
Circle 10 is located at the periphery for facing type shock plate directly of impeller, and the crown end of interior sawtooth circle 10 is with facing the tail end of type shock plate directly at a distance of one
Distance, and a space for being used to grind is formed between interior sawtooth circle and impeller.In the space, dielectric gas is facing type punching directly
Hit in the presence of plate, form the circular motion of high speed, dielectric gas is acted on the viscous force of material particles so that material particles group
Also circular motion is carried out, meanwhile, face the relative motion of type shock plate and interior sawtooth circle directly so that medium fluid and be ground
Material particles, in the space faced directly between type shock plate and interior sawtooth circle, form the non-homogeneous two-phase multi-fluid of complexity, particle
Between occur collide, mutual phase grinding.Meanwhile medium fluid and material particles change the direction of motion after serrated surface is collided,
And hop occurs in movement velocity so that the relative motion being changed between the medium fluid of the direction of motion and other medium fluids
Speed increases, and the speed of related movement increase being changed between the material particles of the direction of motion and unclassified stores particle, from
And further such that medium fluid and material particles in space are suppressed contracting indirectly, increase the several of material particles interaction
Rate and intensity, and then improve grinding effect.Due to the collective effect of centrifugal force and dielectric gas viscous force, close interior sawtooth circle,
Particle size distribution is descending, and closer to outside, particle diameter is bigger, and grain diameter in the outer part is smaller, the viscous force of dielectric gas
More than its centrifugal force, as dielectric gas flows to outlet.In the present embodiment, material enters from charging aperture 6 sets impeller
Chamber, and evenly distributed through the type blade of facing directly of the inlet side of wheel disc 1 with after water conservancy diversion, type shock plate and interior saw are faced in arrival directly
Space between gear ring is ground, and finally reaches discharging opening.
In the embodiment one of connected superfine pulverizer of the present invention, the process of lapping of material is also included as follows：Wheel speed is very
Height, when medium stream leaves and faces type shock plate directly, tangential direction speed is very big, is facing directly between type shock plate and interior sawtooth circle
Space in, medium stream is circumferentially formed thereon the air-flow of rotation at a high speed, when material particles and interior sawtooth circle sawtooth windward
When face collides, bounce-back is formed, material particles just form higher relative velocity with medium stream, and medium stream is in material
Before grain, drastically compressed, flow velocity declines suddenly, the notable transition enhancing of the flow parameter such as pressure, density, temperature, forms class
It is similar to rush the phenomenon of ripple or shock wave, or even produces sonic boom.And material particles are just in the environment of drastically transition, cracking is broken.
On the basis of connected superfine pulverizer embodiment one, it is preferable that reference picture 5, the sawtooth angle B of interior sawtooth circle is 60-
120 °, for the sawtooth smaller compared to angle in the prior art, it is not easy to that crown end 1001 crumbles in grinding, while by
Bigger in the sawtooth angle of the present invention, the inclination of two flank of tooth (windward side and lee face) of sawtooth is relatively slow, can be material particles
There is provided crash direction more vertical striking face so that material particles tend to, from the frontal impact flank of tooth, increase impact, improve
Grinding effect.It is highly preferred that the sawtooth of interior sawtooth circle includes windward side and lee face, windward side according to the rotation direction F of impeller
Angle with radial direction is the second angle C, and the angle of lee face and radial direction is the 3rd angle D, and the second angle C is less than
3rd angle D, due to material particles when moving in a circle more than with windward side hit, the second angle be less than the 3rd angle can make
Obtain material particles to tend to, from the windward side of frontal impact sawtooth, increase impact, improve grinding effect.It is it is highly preferred that interior
The surface of sawtooth circle is also attached with wearing layer, and its frictional resistance is small, hardness is high, anti-wear, while thermal conductivity factor is high.More preferably
Ground, the outside of interior sawtooth circle are also wrapped on heat-conducting layer, for the heat at interior sawtooth circle and in chamber quickly to be exported.Heat-conducting layer
Preferably it can be realized with the water stream channel of flowing.It is highly preferred that the bottom of interior sawtooth circle is provided with the second slag mouth 1002, Neng Gou
In process of lapping, the material that some are unable to reach to Particle size requirements is gradually assembled herein, periodically or continuously discharges, realizes to material
Classification.
On the basis of connected superfine pulverizer embodiment one, it is preferable that reference picture 6, export and be also formed with a ring at side end cap
The spin chamber of shape, and chamber of the entrance of spin chamber with setting impeller, the outlet of spin chamber connects with discharging opening 8.It is preferred that
Ground, the entrance of spin chamber is annular inlet, and the ring-type is corresponding with the milling chamber (space for being previously described for grinding) of ring-type,
It is easy to dielectric gas that the material particles (being ground to preset requirement) of ring-type milling chamber everywhere are sent into revolution by viscous force
In room, it is easy to the outflow of material particles.Preferably, revolution tangential direction of the outlet of spin chamber along spin chamber is set, due to thing
Material particle is moved in a circle in spin chamber, and tangential direction of the outlet of spin chamber along annular spin chamber is set, can also be drawn
Material particles are led to discharge from the outlet of spin chamber with the current direction of motion.The two processes all cause material particles be easier to from
Flowed out in chamber.Preferably, as shown in fig. 6, the bottom of spin chamber is additionally provided with the first slag mouth 9031, from grinding chamber by grinding
Material particles, carry out programmed screening (the slag mouth of interior sawtooth circle for screen for the first time) herein, some do not reach particle diameter will
The material asked gradually is assembled herein, periodically or continuously discharges.
In the embodiment of foregoing connected superfine pulverizer, the wheel disc both sides of impeller, which can all be set, faces type blade directly, preferably
Ground, it can only be set in the inlet side of wheel disc and face type blade directly, outlet side is simultaneously not provided with, but the type shock plate of facing directly then needs taking turns
The both sides of disk are set simultaneously, are easy to form space for grinding with interior sawtooth circle, and need to ensure grinding effect.
In a preferable specific embodiment of connected superfine pulverizer, reference picture 3, Fig. 4, it is included as drive device
Motor, the entrance side end cap 7 provided with charging aperture 6, the outlet side end cap 9 provided with discharging opening 8, and the interior sawtooth circle 10 of annular,
And entrance side end cap 7, outlet side end cap 9, interior sawtooth circle 10 enclose and are set as a chamber, in the chamber rotatably arranged with just like Fig. 1,
Impeller shown in Fig. 2, impeller include wheel disc 1, face type blade 2 directly and face type shock plate 3 directly, face type blade 2 directly, face type impact directly
The all surfaces of plate 3 are attached with wearing layer.In feed side G sides, eight are evenly provided with the import side surface 101 of wheel disc
Face type blade 2 directly, and this eight, which are faced directly type blade, is radially arranged on wheel disc, the initiating terminal 201 for facing type blade directly is close
In the center of wheel disc 1, the tail end 202 for facing type blade directly is no more than in the radial outer edge 103 of wheel disc.Face the starting of type shock plate directly
End 301 is connected with facing the tail end 202 of type blade directly, and edge with face directly type blade into the direction of the first included angle A extend to wheel disc 1 with
Outside, the tail end 302 for facing type shock plate directly is made to exceed the radial outer edge 103 of wheel disc.On the outlet side surface 102 of wheel disc, and
It is not provided with facing type blade 2 directly, but faces the outlet side surface 102 that type shock plate 3 extends to wheel disc from the import side surface of wheel disc directly.
Meanwhile the position of the close wheel disk center in wheel disc 1 is provided with multiple balance pipes 4.In the present embodiment, the motor shaft 5 of motor
Insert at the center of wheel disc 1, for driving wheel rotation.And interior sawtooth circle 10 is located at the periphery for facing type shock plate 3 directly of impeller,
The crown end 1001 of interior sawtooth circle and the distance, and in interior sawtooth circle 10 and face type directly apart of tail end 302 for facing type shock plate directly
A space 11 for being used to grind is formed between shock plate 3.The surface attachment of interior sawtooth circle 10 has a wearing layer, and interior sawtooth circle 10
Sawtooth angle is 60-120 °.The windward side of interior sawtooth circle 10 and the angle of radial direction are less than lee face and the folder of radial direction
Angle.The bottom of interior sawtooth circle 10 is provided with the second slag mouth 1002, and the outside of interior sawtooth circle is coated with the water stream channel of flowing, sees
Cooling water flow conduits 12 shown in Fig. 3.Outlet side end cap 9 further comprises inboard partition 901 and outside end cap 902, wherein inner side
Dividing plate 901 is set close to the interior side of sawtooth circle 10；The spin chamber of an annular is formed between inboard partition 901 and outside end cap 902
903, and chamber of the entrance of spin chamber with setting impeller, the outlet of spin chamber connect with discharging opening 8, the entrance of spin chamber
Set with outlet along the tangential direction of annular spin chamber.The bottom of spin chamber 903 is provided with the first slag mouth 9031.In this implementation
In example, referring to Flow of Goods and Materials direction shown in dotted lines in Figure 4, material enters the chamber for setting impeller from charging aperture 6, and through wheel disc
The type blade 2 of facing directly of 1 inlet side is evenly distributed with after water conservancy diversion, and arrival is faced directly between type shock plate 3 and interior sawtooth circle 10
Space 11 be ground, due to the collective effect of centrifugal force and dielectric gas viscous force, close to interior sawtooth circle, grain diameter point
Cloth is descending, and closer to outside, particle diameter is bigger, and grain diameter in the outer part is smaller, and the viscous force of dielectric gas centrifuges more than it
Power, as dielectric gas flows to spin chamber 903, discharging opening 8 is finally returned back in spin chamber 903.Produced in grinding chamber
A heat part flowed out with fluid, a part passes through the cooling water export in the cooling water flow conduits 12 that be connecteds with interior sawtooth circle.
Present invention also offers a kind of System of Ultra Thin Power Rubbing for including foregoing connected superfine pulverizer, it includes charging gear, preceding
Connected superfine pulverizer, the air-blast device positioned at feed side or the blower unit positioned at exit side, the gas-solid separating device stated；Wherein,
Charging gear connects with the charging aperture of connected superfine pulverizer；Air-blast device connects with the charging aperture of connected superfine pulverizer；Or air inducing dress
Put and connected with the discharging opening of connected superfine pulverizer；The entrance of gas-solid separating device connects with the discharging opening of connected superfine pulverizer.
In the System of Ultra Thin Power Rubbing of the application present invention, conventional size reduction device can be utilized, completes raw material roughing, processing
Particle afterwards, by charging gear, e.g., conveying worm, jigging conveyer etc., added from charging aperture, with dielectric gas
Flowing, into the milling chamber of connected superfine pulverizer.Motor exceedes the wheel speed in connected superfine pulverizer by machine driving
More than 3000rpm.The type blade of facing directly of impeller inlet side plays water conservancy diversion and evenly distributes material particles, dielectric gas, Yi Jiti
The effect of high dielectric gas pressure head, a flow head part for dielectric gas are made from the caused supercharging of type blade rotation is faced directly
With a part can come from the blower unit in exit side installation, or the air-blast device of feed side installation.After grinding, into
The two phase flow that product powder mixes with dielectric gas is discharged from the spin chamber discharging opening of connected superfine pulverizer, is entered by gas-solid separating device
Row separation, gas-solid separating device can use gravity dust-precipitator, inertia dust-precipitator, rotoclone collector, filtering type dust-precipitator, electricity to gather dust
Device, wet dust collector etc., the dielectric gas after separation is cooled down, after clean, drying process, re-used, or is directly arranged
Air.
Using the present invention connected superfine pulverizer, can by the higher nonmetallic or metal grinding of hardness into superfines, and
The superfines purity of processing is high, and part of appliance abrasion is small, has grading function.Simultaneously for the thing for having good ductility
Material, it is ball-type superfines particle to be advantageous to process form.
(1) high-purity quartz of the particle diameter between the mesh (250 microns~125 microns) of 60 mesh~120 is entered using the present invention
Row grinding, is tested, particle diameter distribution is as shown in figure 8, and specific powder after grinding using Model 780AccuSizer equipment
Electron microscope picture referring to shown in Fig. 9, Figure 10.The particle size distribution data specifically measured is as follows：
5% total population<1.93 micron；10% total population<2.01 micron；
15% total population<2.11 micron；20% total population<2.21 micron；
25% total population<2.31 micron；30% total population<2.44 micron；
35% total population<2.65 micron；40% total population<2.77 micron；
45% total population<3.03 micron；50% total population<3.22 micron；
55% total population<3.48 micron；60% total population<3.92 micron；
65% total population<4.36 micron；70% total population<4.77 micron；
75% total population<5.47 micron；80% total population<6.27 micron；
85% total population<7.18 micron；90% total population<8.44 micron；
95% total population<10.80 microns；99% total population<16.25 microns.
(2) silicon steel sheet of the full-size within 3mm is ground using the present invention, it is micro- to be less than 20 for particle diameter after grinding
Rice, is detected after grinding using electron microscope, as shown in Figure 11, Figure 12, Figure 13.
It should be noted that above-described embodiment can independent assortment as needed.Described above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, do not departing from the premise of the principle of the invention
Under, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (12)
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| DE102018111621B4 (en) * | 2018-05-15 | 2020-01-23 | Helmut Prihoda | Processes to improve the productivity of grinding plants |
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| CN113996429B (en) * | 2021-10-21 | 2023-02-07 | 山东鑫海矿业技术装备股份有限公司 | Wear-resisting composite impeller for vortex crushing device |
| CN115254308B (en) * | 2022-06-22 | 2023-08-29 | 常州市佳华机械科技有限公司 | Starch-rich raw material pulverizing process |
| CN115254307B (en) * | 2022-06-22 | 2023-07-07 | 常州市佳华机械科技有限公司 | Novel pulverizer system for starch production |
| CN120306088B (en) * | 2025-06-16 | 2025-08-19 | 连云港裕华矿产有限公司 | A graded energy-saving air flow mill and an ultrafine grinding method for ores |
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