CN105536957A - Impeller, superfine mill and superfine milling system - Google Patents
Impeller, superfine mill and superfine milling system Download PDFInfo
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- CN105536957A CN105536957A CN201610058680.1A CN201610058680A CN105536957A CN 105536957 A CN105536957 A CN 105536957A CN 201610058680 A CN201610058680 A CN 201610058680A CN 105536957 A CN105536957 A CN 105536957A
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- wheel disc
- impeller
- facing
- shock plate
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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)
Abstract
The invention provides an impeller, a superfine mill applying the impeller and a superfine milling system comprising the superfine mill. The impeller comprises a wheel disc, straight surface type blades and straight surface type impact plates, and an abrasion-resistant layer is adhered to the surface of each straight surface type blade. The straight surface type blades are multiple and uniformly arranged on the wheel disc in the radial direction. The tail end of each straight surface type blade is provided with one corresponding straight surface type impact plate in the extension direction of the center of the wheel disc to the outer diameter edge of the wheel disc, and a first included angle is formed between each straight surface type blade and the corresponding straight surface type impact plate. The tail ends of the straight surface type blades are located within the outer diameter edge of the wheel disc. The initiating end of each straight surface type impact plate is connected with the tail end of the corresponding straight surface type blade. The tail ends of the straight surface type impact plates exceed the outer diameter edge of the wheel disc. According to the impeller, the superfine mill applying the impeller and the superfine milling system comprising the superfine mill, high-hardness nonmetal or metal can be milled into superfine powder; in addition, abrasion of equipment parts is small, and the function of particle size classification is achieved.
Description
Technical field
The present invention relates to superfines manufacture field, espespecially a kind of impeller and apply connected superfine pulverizer, the System of Ultra Thin Power Rubbing of this impeller.
Background technology
In superfines manufacture field, the equipment of physical method processing superfine powder is utilized to mainly contain 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, and the kinetic energy of generation makes particle mutually collide, impacts, rubs, shears and realize ultra-fine grinding.But this mode by gas transfer kinetic energy solid particles, make solid particle kinetic energy limited, therefore, single machine yield is low, and energy consumption is high.
The research of super-pine crush equipment that vibromill is is medium with ball or rod.Medium, in grinding machine internal vibration, can make to be less than the crushing material of 2mm to several microns.It has efficient, energy-conservation, save the advantages such as space, product granularity be even, but limitting due to the machining shape of medium, unavoidably produce wearing and tearing, thus affect 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, the powder particle of contact abrading-ball is made to crash or grind, make mixture be subject to turbulence immixture simultaneously in the space of ball and to be uniformly dispersed and mutually coated, and surface-active is reduced, reunite and reduce, and then impel pulverizing to proceed down, can dry grind, wet-milling, vacuum mill, abrasive product minimum particle size can to 0.1 μm, but this mode impurity is more, and energy consumption is high.
Ball-stirring mill utilizes agitating device abrasive media is moved and produces impact, shearing, abrasive action, thus the equipment of comminuting matter.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.
Have in colloid mill turn tooth with match determine tooth, one of them High Rotation Speed, another is static, material to be machined produces downward spiral impulsive force by weight own or external pressure pressurization, during through the gap of determining, turning between tooth, be subject to the physical actions such as powerful shearing force, frictional force, dither, high speed vortex, make material by emulsification effectively, dispersion, homogeneous and pulverizing.But turn tooth and determine tooth High Rotation Speed, another is static, often can wear and tear.
Mechanical impact crusher utilizes to impose fierce impact around level or the epitrochanterian impact components of vertical axis high-speed rotary (rod, blade, tup etc.) to material, and the equipment brute force attack, shearing etc. producing high frequency between itself and stator and between material being acted on and pulverizes.
Fan mill is typical mechanical impact crusher, with the impeller of 8 ~ 10 blades with 750 ~ 1500r/min High Rotation Speed, utilize the fan-type of High Rotation Speed impact impeller coal to be worn into the high speed coal mill of coal dust, be mainly used in grinding high water content brown coal powder, run coal powder.
Also have the high-speed eddy pulverizers different from general pulverizer, such as, Chinese patent CN1929925B discloses one " high turbulence mill and bi-negative pressure turbine thereof ", utilize the bi-negative pressure turbine of particular design, under the driving of motor, produce eddy current and turbulent flow in mill chamber inside, thus form two phase flow.Material is under the effect of turbulent flow, and mutual autogenous grinding, produces head-on collision and shear force, thus ground material.But the grindability of its turbulent flow is limited, main or dependence impacts tooth plate to the further ultra-fine grinding of material.
No matter fan mill, or the mechanical shock pulverizer such as high-speed eddy pulverizers, when pulverizing the high material of hardness, as quartz, ore and metal etc., the impact components serious wear such as rod, blade, tup, impact tooth plate, cannot ensure long time continuous working.
Summary of the invention
The object of this invention is to provide a kind of impeller, the wear-resisting degree of its impact components is higher, especially when pulverizing high rigidity material.
Another object of the present invention is to provide a kind of connected superfine pulverizer of application of aforementioned impeller, and nonmetal or metal grinding higher for hardness can be become superfines by it, and part of appliance wearing and tearing are little, have grading function.
Another object of the present invention is to provide a kind of System of Ultra Thin Power Rubbing comprising aforementioned connected superfine pulverizer.
Technical scheme provided by the invention is as follows:
A kind of impeller, it comprises:
Wheel disc, face type blade directly and face type shock plate directly; And described in face type blade directly and the described surface attachment facing the windward side of type shock plate directly has wearing layer;
Described type blade of facing directly is multiple, and the direction that Qie Yancong disperses at center is to the periphery arranged on described wheel disc;
Along from the direction that the center of described wheel disc extends to the periphery, described in the tail end facing type blade directly is provided with, face type shock plate directly described in each, and described in face type blade directly and described facing directly between type shock plate forms the first angle;
Within the described tail end facing type blade directly is positioned at the external diameter edge of described wheel disc;
The described initiating terminal facing type shock plate directly is connected with the described tail end facing type blade directly, described in face type shock plate directly tail end exceed the external diameter edge of described wheel disc.
Preferably, facing type blade radial described in directly is arranged on described wheel disc;
And/or;
Described type blade of facing directly is arranged on described wheel disc along the concentrically ringed tangential direction of wheel disc.
Preferably, described wearing layer is the wear plate of composite;
And/or;
Face type blade described in described wearing layer is coated on directly and describedly face directly on whole outer surfaces of type shock plate;
And/or;
Described first angle is 120-180 °.
Preferably, face type blade described in directly and be only arranged at the side of described wheel disc on the surface;
Described type shock plate of facing directly extends to opposite side surface on the surface from the side of described wheel disc.
Preferably, described wheel disc is provided with at least one balance pipe being close to described position of taking turns disk center.
Present invention also offers a kind of connected superfine pulverizer, it comprises:
The interior sawtooth circle of drive unit, the entrance side end cap being provided with charging aperture, the outlet side end cap being provided with discharging opening and annular, and described entrance side end cap, described outlet side end cap, described interior sawtooth corral are set as a chamber;
And being provided with impeller as the aforementioned rotationally in described chamber, described impeller is connected with described drive unit, and is rotated by described drive unit driving;
And the periphery of type of facing directly the shock plate of described impeller is located at by described interior sawtooth circle, the crown end of described interior sawtooth circle and the described tail end of type shock plate of facing directly at a distance of a distance, and form a space for grinding between described interior sawtooth circle and described impeller;
Material enters described chamber from described charging aperture, and arrives described discharging opening behind the described space for grinding.
Preferably, the sawtooth angle of described interior sawtooth circle is 60-120 °;
And/or;
The sawtooth of described interior sawtooth circle comprises windward side and lee face according to the rotation direction of impeller, the angle of described windward side and radial direction is the second angle, the angle of described lee face and radial direction is the 3rd angle, and described second angle is less than described 3rd angle;
And/or;
The surface attachment of described interior sawtooth circle has wearing layer.
Preferably, described outlet side end cap comprises inboard partition and outside end cap further, and described inboard partition is close to described interior sawtooth circle side and arranges;
The spin chamber of an annular is formed between described inboard partition and described outside end cap, and the entrance of described spin chamber and the described chamber that impeller is set, the outlet of described spin chamber is communicated with described discharging opening.
Preferably, the entrance of described spin chamber is annular inlet;
And/or;
The outlet of described spin chamber is arranged along the revolution tangential direction of spin chamber.
Preferably, the bottom of described spin chamber is provided with first and falls cinder notch.
Preferably, the bottom of described interior sawtooth circle is provided with second and falls cinder notch;
And/or;
The outside of described interior sawtooth circle is coated with heat-conducting layer.
Present invention also offers a kind of System of Ultra Thin Power Rubbing, it comprises:
Charging gear, aforesaid connected superfine pulverizer, be positioned at the air-blast device of feed side or be positioned at blower unit, the gas-solid separating device of exit side;
Described charging gear is communicated with the charging aperture of described connected superfine pulverizer;
Described air-blast device is communicated with the charging aperture of described connected superfine pulverizer; Or described blower unit is communicated with the discharging opening of described connected superfine pulverizer;
The entrance of described gas-solid separating device is communicated with the discharging opening of described connected superfine pulverizer.
By impeller provided by the invention and connected superfine pulverizer, System of Ultra Thin Power Rubbing, following at least one beneficial effect can be brought:
1, the nonmetal or hard metal of hard can be ground, and the finished product powder purity obtained after processing is high.Simultaneously because equipment is attached with wearing layer, greatly wearing and tearing can be reduced.
2, grinding effect can be improved by many places structure.(1) impeller type of facing directly blade, face type shock plate directly, the surface of interior sawtooth circle is all attached with wearing layer, make because wearing layer mostly is composite, its smooth surface, little with the frictional force of storeroom, thus reduce to face type blade directly, face frictional force between type shock plate and material directly, greatly reduce the wearing and tearing of wearing layer, and increase the impact in front, effectively can improve grinding effect.(2) sawtooth angle of interior sawtooth circle is 60-120 °, the sawtooth that angle is less in prior art, be not easy to when grinding, crown end be crumbled, the striking face that simultaneously crash direction can also be provided more vertical for material particles, material particles is made more to trend towards from the frontal impact flank of tooth, increase impact, improve grinding effect.(3) relative motion of type shock plate and interior sawtooth circle is faced directly, make medium fluid and polished material particles, facing directly in the space between type shock plate and interior sawtooth circle, forming complicated non-homogeneous two-phase multi-fluid, colliding between particle, grind mutually.Simultaneously; medium fluid and material particles change the direction of motion after colliding serrated surface; and movement velocity there will be hop; the speed of related movement be changed between the medium fluid of the direction of motion and other medium fluid is increased; and the speed of related movement be changed between the material particles of the direction of motion and unclassified stores particle increases; thus make the medium fluid in space and material particles indirectly be suppressed contracting further; increase the synergistic probability of material particles and intensity, and then improve grinding effect.
3, impeller only arranges on the surface in the side of wheel disc and faces type blade directly, like this when wheel rotation, the setting of wheel disc one side is faced type blade directly and just can be formed larger pressure difference between the charging aperture side of wheel disc and discharging opening side, thus easier directing material is from the charging aperture lateral movement of wheel disc to facing type shock plate directly, and walk around the end of wheel disc, the discharging opening side of rear arrival wheel disc.
4, by arranging the grading function that cinder notch realizes material in the bottom of interior sawtooth circle and spin chamber, in the process of classification, the impurity in material separating can be carried out on the one hand by the cinder notch that falls, the bulky grain that the cinder notch that falls falls can also be collected on the other hand and get back to charging aperture circular grinding again again.
Accompanying drawing explanation
Below by clearly understandable mode, accompanying drawings preferred embodiment, is further described the above-mentioned characteristic of a kind of impeller and connected superfine pulverizer, System of Ultra Thin Power Rubbing, technical characteristic, advantage and implementation thereof.
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 the exploded view of a kind 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 the schematic diagram of a kind of embodiment of interior sawtooth circle in connected superfine pulverizer of the present invention;
Fig. 6 is the schematic diagram of a kind of embodiment of spin chamber in connected superfine pulverizer of the present invention;
Fig. 7 is the structural representation that the another kind of embodiment of impeller of the present invention is watched from charging aperture side;
Fig. 8 is after application the present invention grinds the high-purity quartz of particle diameter between 60 order ~ 120 orders (250 microns ~ 125 microns), the histogram of particle size distribution obtained;
Fig. 9 is after application the present invention grinds the high-purity quartz of particle diameter between 60 order ~ 120 orders (250 microns ~ 125 microns), a kind of electron microscope display figure obtained;
Figure 10 is the another kind of electron microscope display figure of Fig. 9;
Figure 11 is after application the present invention grinds the silicon steel sheet of full-size within 3mm, a kind of electron microscope display figure obtained;
Figure 12 is the another kind of electron microscope display figure of Figure 11;
Figure 13 is the another kind of electron microscope display figure of Figure 11.
Drawing reference numeral illustrates:
G-feed side; F-rotation direction; H-material movement direction; A-first angle; B-sawtooth angle; C-second angle; D-the 3rd angle;
1-wheel disc; The inlet side surface of 101-wheel disc; The outlet side surface of 102-wheel disc; The external diameter edge of 103-wheel disc; 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 pipe; 5-motor shaft; 6-charging aperture; 7-entrance side end cap; 8-discharging opening;
9-outlet side end cap; 901-inboard partition; End cap outside 902-; 903-spin chamber; 9031-first falls cinder notch;
Sawtooth circle in 10-; 1001-crown end; 1002-second falls cinder notch;
The space of 11-for grinding; 12-cooling water flow conduits.
Detailed description of the invention
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, contrast accompanying drawing is illustrated the specific embodiment of the present invention below.Apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, and obtain other embodiment.
For making simplified form, only schematically show part related to the present invention in each figure, they do not represent its practical structures as product.In addition, be convenient to make simplified form understand, there are the parts of identical structure or function in some figure, only schematically depict one of them, or only marked one of them.In this article, " one " not only represents " only this ", also can represent the situation of " more than one ".
In the embodiment one of impeller of the present invention, impeller comprises: wheel disc, face type blade directly and face type shock plate directly, wherein, faces type blade directly and faces type shock plate directly and be arranged on wheel disc.Arc surface type blade conventional in prior art, of the present invention face type blade directly and face the processing mode of type shock plate directly simple.Wearing layer is attached with on the surface (dividing according to wheel rotation direction) of the windward side faced type blade directly and face type shock plate directly, wearing layer can not only strengthen the abrasivity faced type blade directly He face type shock plate directly, and make because wearing layer mostly is composite, such as carbide alloy or polycrystalline diamond (being called for short PCD) or polycrystalline cubic boron nitride (being called for short PCBN).The smooth surface of wearing layer, little with the frictional force of storeroom, thus reduce to face type blade directly, face frictional force between type shock plate and material directly, greatly reduce the wearing and tearing of wearing layer, and increase the impact in front, effectively can improve grinding effect.And simultaneously because the wearing layer made mostly is sheet, extensibility is lower, thus blade and shock plate is designed to type of facing directly and can also be easier to wearing layer described in surface attachment.When specifically arranging, the type blade of facing directly is multiple, the direction that Qie Yancong disperses at center is to the periphery arranged on wheel disc, be preferably and evenly arrange, be convenient to when being applied in connected superfine pulverizer, water conservancy diversion and uniform distribution are carried out to the material entered and dielectric gas, the pressure head of dielectric gas can be improved simultaneously when vane rotary.On edge from the direction that the center of wheel disc extends to the periphery, each tail end facing type blade directly is respectively provided with one and faces type shock plate directly, and face type blade directly and face shape between type shock plate directly and have angle, and this angle is formed at the side, non-pressure face faced type blade directly Yu face type shock plate directly.Face type blade directly and face this angle formula structure of type shock plate directly, can making to be changed the direction of motion by the dielectric gas after facing type blade water conservancy diversion directly and material through facing type shock plate directly, entering on the track of circular motion.Meanwhile, within the tail end facing type blade directly is positioned at the external diameter edge of wheel disc; The initiating terminal facing type shock plate directly is connected with the tail end facing type blade directly, and the tail end facing type shock plate directly exceeds the external diameter edge of wheel disc.
In above-described embodiment one, facing the set-up mode of type blade on wheel disc directly can be radial setting, as shown in Figure 1; Also can be arranged on wheel disc along the concentrically ringed tangential direction of wheel disc, as shown in Figure 7, wherein, concentric circles 104 be virtual concentric circle, schematically draws in figure just for convenience of explanation.Preferably, described concentrically ringed diameter is less than 1/3rd of wheel diameter.
On the basis of above-described embodiment one, preferably, facing type blade directly and facing the sealing of type shock plate directly is arranged on wheel disc, avoids material to be stuck in and faces type blade directly, faces directly in the finedraw of type shock plate and wheel disc link position, also can not affect the flow regime of dielectric gas during vane rotary simultaneously.
On the basis of above-described embodiment one; preferably; aforesaid wearing layer is not only attached to the windward side surface faced type blade directly and face type shock plate directly, but the two whole outer surfaces coated further, the structure everywhere faced type blade directly and face type shock plate directly can be protected better not to be worn.
On the basis of above-described embodiment one, preferably, type blade is faced directly and the angle faced directly between type shock plate is 120-180 °.
In above-described embodiment one, the both side surface of wheel disc is equipped with and faces type blade directly and face type shock plate directly, in other embodiments, preferably, only arrange on the surface in the side of wheel disc and face type blade directly, the type shock plate of facing directly then extends to opposite side surface from a side surface of wheel disc.When described impeller is applied in connected superfine pulverizer or other abrasive structure, the surface that wheel disc one side surface facing type blade directly is the charging aperture side of wheel disc is set, like this when wheel rotation, the setting of wheel disc one side is faced type blade directly and just can be formed larger pressure difference between the charging aperture side of wheel disc and discharging opening side, thus easier directing material is from the charging aperture lateral movement of wheel disc to facing type shock plate directly, and walk around the end of wheel disc, the discharging opening side of rear arrival wheel disc.
In a specific embodiment of impeller of the present invention, with reference to Fig. 1,2, impeller comprises wheel disc 1, faces type blade 2 directly and face type shock plate 3 directly, faces type blade 2 directly, faces all surfaces of type shock plate 3 directly and be all attached with wearing layer.As shown in Figure 1, in feed side G side, the inlet side surface 101 of wheel disc is provided with equably eight and faces type blade 2 (can also be other numbers in other embodiments) directly, and these eight to face type blade directly are all radial on wheel disc settings, the initiating terminal 201 facing type blade directly is close to the center of wheel disc 1, and the tail end 202 facing type blade directly is no more than the external diameter edge 103 in wheel disc.The initiating terminal 301 facing type shock plate directly is connected with the tail end 202 facing type blade directly, and along becoming the direction of the first included angle A to extend to beyond wheel disc 1 with the type blade of facing directly, makes the tail end 302 facing type shock plate directly exceed the external diameter edge 103 of wheel disc.As shown in Figure 2, on the outlet side surface 102 of wheel disc, do not arrange and face type blade 2 directly, but face type shock plate 3 extends to wheel disc outlet side surface 102 from the inlet side surface of wheel disc directly.Simultaneously, the position near wheel disk center of wheel disc 1 is provided with multiple balance pipe 4, can not only the gas of wheel disc outlet side be drawn back to entrance side, simultaneously when impeller being applied to connected superfine pulverizer or other abrasive structure, the leakage of the chamber medium gas that impeller is set can also be avoided, and avoid entering of extraneous air, affect the gas flowing in chamber.
Present invention also offers a kind of connected superfine pulverizer, it applies impeller as the aforementioned.
In the embodiment one of connected superfine pulverizer of the present invention, with reference to Fig. 3, it comprises: (the present embodiment is motor to drive unit, not shown), be provided with the interior sawtooth circle 10 of the entrance side end cap 7 of charging aperture 6, the outlet side end cap 9 being provided with discharging opening 8 and annular, and entrance side end cap 7, outlet side end cap 9, interior sawtooth circle 10 are enclosed to form a chamber.Aforesaid impeller is located in this chamber rotationally, and drive unit is motor, and carrys out drives impeller by the center that motor shaft 5 inserts wheel disc 1 and rotate.The periphery of type of facing directly the shock plate of impeller is located at by interior sawtooth circle 10, the crown end of interior sawtooth circle 10 with face the tail end of type shock plate directly at a distance of a distance, and between interior sawtooth circle and impeller, form a space for grinding.In this space, dielectric gas is under the effect facing type shock plate directly, form circular motion at a high speed, dielectric gas, to the viscous force effect of material particles, makes material particles roll into a ball and also carries out circular motion, simultaneously, face the relative motion of type shock plate and interior sawtooth circle directly, make medium fluid and polished material particles, facing directly in the space between type shock plate and interior sawtooth circle, form complicated non-homogeneous two-phase multi-fluid, collide between particle, grind mutually.Simultaneously; medium fluid and material particles change the direction of motion after colliding serrated surface; and movement velocity there will be hop; the speed of related movement be changed between the medium fluid of the direction of motion and other medium fluid is increased; and the speed of related movement be changed between the material particles of the direction of motion and unclassified stores particle increases; thus make the medium fluid in space and material particles indirectly be suppressed contracting further; increase the synergistic probability of material particles and intensity, and then improve grinding effect.Due to the acting in conjunction of centrifugal force and dielectric gas viscous force, near interior sawtooth circle, particle size distribution is descending, larger the closer to outside particle diameter, grain diameter is in the outer part less, and the viscous force of dielectric gas is greater than its centrifugal force, along with dielectric gas flows to outlet.In the present embodiment, material enters the chamber arranging impeller from charging aperture 6, and after type of facing directly the blade of the inlet side of wheel disc 1 carries out uniform distribution and water conservancy diversion, arrives the space faced directly between type shock plate and interior sawtooth circle and grind, finally arrive discharging opening.
In the embodiment one of connected superfine pulverizer of the present invention, also comprise as follows to the process of lapping of material: wheel speed is very high, medium stream leave face type shock plate directly time, tangential direction speed is very large, facing directly in the space between type shock plate and interior sawtooth circle, medium stream along the circumferential direction forms the air-flow of High Rotation Speed, when the sawtooth windward side of material particles and interior sawtooth circle collides, form bounce-back, material particles just forms higher relative velocity with medium stream, and medium stream is before material particles, sharply compressed, flow velocity declines suddenly, pressure, density, the remarkable transition of the flow parameters such as temperature strengthens, define the phenomenon being similar to and rushing ripple or shock wave, even produce sonic boom.And material particles is just in the environment of sharply transition, cracking is broken.
On the basis of connected superfine pulverizer embodiment one, preferably, with reference to Fig. 5, the sawtooth angle B of interior sawtooth circle is 60-120 °, the sawtooth that angle is less in prior art, be not easy to when grinding, crown end 1001 be crumbled, simultaneously because sawtooth angle of the present invention is larger, the inclination of two flank of tooth (windward side and lee face) of sawtooth is more slow, the striking face that crash direction can be provided more vertical for material particles, make material particles more trend towards from the frontal impact flank of tooth, increase impact, improve grinding effect.More preferably, the sawtooth of interior sawtooth circle comprises windward side and lee face according to the rotation direction F of impeller, the angle of windward side and radial direction is the second angle C, the angle of lee face and radial direction is the 3rd angle D, and the second angle C is less than the 3rd angle D, clash into windward side because material particles is many when moving in a circle, the second angle is less than the windward side that the 3rd angle can make material particles more trend towards from frontal impact sawtooth, increase impact, improve grinding effect.More preferably, the surface of interior sawtooth circle is also attached with wearing layer, and its frictional resistance is little, hardness is high, anti-wear, and thermal conductivity factor is high simultaneously.More preferably, the outside of interior sawtooth circle is also coated with heat-conducting layer, for being derived fast by the heat in interior sawtooth circle place and chamber.Heat-conducting layer can preferably realize with the water stream channel of flowing.More preferably, the bottom of interior sawtooth circle is provided with second and falls cinder notch 1002, in process of lapping, can be assembled gradually by the material that some cannot reach Particle size requirements, regularly or continuously discharge, realize the classification to material at this.
On the basis of connected superfine pulverizer embodiment one, preferably, with reference to Fig. 6, outlet side end caps is also formed with the spin chamber of an annular, and the entrance of spin chamber and the chamber that impeller is set, the outlet of spin chamber is communicated with discharging opening 8.Preferably, the entrance of spin chamber is annular inlet, this ring-type is corresponding with the grinding chamber (the aforesaid space for grinding) of ring-type, being convenient to dielectric gas relies on viscous force ring-type to be ground chamber material particles everywhere (being ground to preset requirement) and send in spin chamber, is convenient to the outflow of material particles.Preferably, the outlet of spin chamber is arranged along the revolution tangential direction of spin chamber, because material particles moves in a circle in spin chamber, by the outlet of spin chamber annularly spin chamber tangential direction arrange, also can discharge with the outlet of the current direction of motion from spin chamber by directing material particle.These two processes all make material particles be easier to flow out from chamber.Preferably, as shown in Figure 6, the bottom of spin chamber is also provided with first and falls cinder notch 9031, the material particles of grinding is passed through from grinding chamber, programmed screening (cinder notch that falls of interior sawtooth circle is for first time screening) is carried out at this, some materials not reaching Particle size requirements are assembled gradually at this, regularly or continuously discharge.
In the embodiment of aforesaid connected superfine pulverizer, the wheel disc both sides of impeller can all be arranged faces type blade directly, preferably, only can arrange at the inlet side of wheel disc and face type blade directly, outlet side is not arranged, but the type shock plate of facing directly then needs to arrange in the both sides of wheel disc simultaneously, be convenient to the space formed with interior sawtooth circle for grinding, and need grinding effect be ensured.
In a preferred specific embodiment of connected superfine pulverizer, with reference to Fig. 3, Fig. 4, it comprise as drive unit motor, be provided with the entrance side end cap 7 of charging aperture 6, be provided with the outlet side end cap 9 of 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 are enclosed to form a chamber, impeller is as shown in Figure 1 and Figure 2 provided with rotationally in this chamber, impeller comprises wheel disc 1, faces type blade 2 directly and face type shock plate 3 directly, faces type blade 2 directly, faces all surfaces of type shock plate 3 directly and be all attached with wearing layer.In feed side G side, the inlet side surface 101 of wheel disc is provided with eight equably and faces type blade 2 directly, and these eight to face type blade directly are all radial on wheel disc settings, the initiating terminal 201 facing type blade directly is close to the center of wheel disc 1, and the tail end 202 facing type blade directly is no more than the external diameter edge 103 in wheel disc.The initiating terminal 301 facing type shock plate directly is connected with the tail end 202 facing type blade directly, and along becoming the direction of the first included angle A to extend to beyond wheel disc 1 with the type blade of facing directly, makes the tail end 302 facing type shock plate directly exceed the external diameter edge 103 of wheel disc.On the outlet side surface 102 of wheel disc, do not arrange and face type blade 2 directly, but face type shock plate 3 extends to wheel disc outlet side surface 102 from the inlet side surface of wheel disc directly.Meanwhile, the position near wheel disk center of wheel disc 1 is provided with multiple balance pipe 4.In the present embodiment, the motor shaft 5 of motor inserts the center of wheel disc 1, rotates for drives impeller.And the periphery of type of facing directly the shock plate 3 of impeller is located at by interior sawtooth circle 10, the crown end of interior sawtooth circle 1001 with face the tail end 302 of type shock plate directly at a distance of a distance, and to form a space 11 for grinding between type shock plate 3 at interior sawtooth circle 10 and facing directly.The surface attachment of interior sawtooth circle 10 has wearing layer, and the sawtooth angle of interior sawtooth circle 10 is 60-120 °.The interior windward side of sawtooth circle 10 and the angle of radial direction are less than the angle of lee face and radial direction.The bottom of interior sawtooth circle 10 is provided with second and falls cinder notch 1002, and the outside of interior sawtooth circle is coated with the water stream channel of flowing, cooling water flow conduits 12 as shown in Figure 3.Outlet side end cap 9 comprises inboard partition 901 and outside end cap 902 further, and wherein inboard partition 901 is close to the setting of interior sawtooth circle 10 side; Form the spin chamber 903 of an annular between inboard partition 901 and outside end cap 902, and the entrance of spin chamber with the chamber of impeller is set, the outlet of spin chamber is communicated with discharging opening 8, the tangential direction setting of the entrance and exit of spin chamber all annularly spin chamber.The bottom of spin chamber 903 is provided with first and falls cinder notch 9031.In the present embodiment, see Flow of Goods and Materials direction shown in dotted lines in Figure 4, material enters the chamber arranging impeller from charging aperture 6, and after type of facing directly the blade 2 of the inlet side of wheel disc 1 carries out uniform distribution and water conservancy diversion, arrive the space 11 faced directly between type shock plate 3 and interior sawtooth circle 10 to grind, due to the acting in conjunction of centrifugal force and dielectric gas viscous force, near interior sawtooth circle, particle size distribution is descending, larger the closer to outside particle diameter, grain diameter is in the outer part less, the viscous force of dielectric gas is greater than its centrifugal force, along with dielectric gas flows to spin chamber 903, finally in spin chamber 903, return back to discharging opening 8.The heat part produced in grinding chamber flows out with fluid, and the cooling water in a part of cooling water flow conduits 12 by being connected with interior sawtooth circle is derived.
Present invention also offers a kind of System of Ultra Thin Power Rubbing comprising aforementioned connected superfine pulverizer, it comprises charging gear, aforesaid connected superfine pulverizer, is positioned at the air-blast device of feed side or is positioned at blower unit, the gas-solid separating device of exit side; Wherein, charging gear is communicated with the charging aperture of connected superfine pulverizer; Air-blast device is communicated with the charging aperture of connected superfine pulverizer; Or blower unit is communicated with the discharging opening of connected superfine pulverizer; The entrance of gas-solid separating device is communicated with the discharging opening of connected superfine pulverizer.
When applying System of Ultra Thin Power Rubbing of the present invention, conventional size reduction device can be utilized, complete raw material roughing, the particle after processing, by charging gear, e.g., conveying worm, jigging conveyer etc., add from charging aperture, along with the flowing of dielectric gas, enter in the grinding chamber of connected superfine pulverizer.Motor by machine driving, makes wheel speed in connected superfine pulverizer more than more than 3000rpm.Type of facing directly the blade of impeller inlet side plays water conservancy diversion and uniform distribution material particles, dielectric gas, and improve the effect of dielectric gas pressure head, a flow head part for dielectric gas is from the pressurization facing the generation of type blade rotary directly, a part can carry out the blower unit that comfortable exit side is installed, or the air-blast device that feed side is installed.After grinding, the two phase flow that finished product powder mixes with dielectric gas is discharged from the spin chamber discharging opening of connected superfine pulverizer, be separated by gas-solid separating device, gas-solid separating device can adopt gravity dust-precipitator, inertia dust-precipitator, rotoclone collector, filtering type dust-precipitator, cottrell, wet dust collector etc., dielectric gas after separation carries out cooling, after clean, dry process, re-use, or directly arrange air.
Apply connected superfine pulverizer of the present invention, nonmetal or metal grinding higher for hardness can be become superfines, and the superfines purity of processing is high, part of appliance wearing and tearing are little, have grading function.Simultaneously for the material having good ductility, being conducive to processing form is ball-type superfines particle.
(1) apply the present invention to grind the high-purity quartz of particle diameter between 60 order ~ 120 orders (250 microns ~ 125 microns), Model780AccuSizer testing equipment is adopted after grinding, as shown in Figure 8, and the electron microscope picture of concrete powder is see shown in Fig. 9, Figure 10 for domain size distribution.The particle size distribution data specifically recorded is as follows:
Total population <1.93 micron of 5%; Total population <2.01 micron of 10%;
Total population <2.11 micron of 15%; Total population <2.21 micron of 20%;
Total population <2.31 micron of 25%; Total population <2.44 micron of 30%;
Total population <2.65 micron of 35%; Total population <2.77 micron of 40%;
Total population <3.03 micron of 45%; Total population <3.22 micron of 50%;
Total population <3.48 micron of 55%; Total population <3.92 micron of 60%;
Total population <4.36 micron of 65%; Total population <4.77 micron of 70%;
Total population <5.47 micron of 75%; Total population <6.27 micron of 80%;
Total population <7.18 micron of 85%; Total population <8.44 micron of 90%;
Total population <10.80 micron of 95%; Total population <16.25 micron of 99%.
(2) apply the present invention to grind the silicon steel sheet of full-size within 3mm, after grinding, particle diameter is less than 20 microns, adopts electron microscope to detect, as shown in Figure 11, Figure 12, Figure 13 after grinding.
It should be noted that above-described embodiment all can independent assortment as required.The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. an impeller, is characterized in that, comprising:
Wheel disc, face type blade directly and face type shock plate directly; And described in face type blade directly and the described surface attachment facing the windward side of type shock plate directly has wearing layer;
Described type blade of facing directly is multiple, and the direction that Qie Yancong disperses at center is to the periphery arranged on described wheel disc;
Along from the direction that the center of described wheel disc extends to the periphery, described in the tail end facing type blade directly is provided with, face type shock plate directly described in each, and described in face type blade directly and described facing directly between type shock plate forms the first angle;
Within the described tail end facing type blade directly is positioned at the external diameter edge of described wheel disc;
The described initiating terminal facing type shock plate directly is connected with the described tail end facing type blade directly, described in face type shock plate directly tail end exceed the external diameter edge of described wheel disc.
2. impeller according to claim 1, is characterized in that:
Described type blade radial of facing directly is arranged on described wheel disc;
And/or;
Described type blade of facing directly is arranged on described wheel disc along the concentrically ringed tangential direction of wheel disc.
3. impeller according to claim 1, is characterized in that:
Described wearing layer is the wear plate of composite;
And/or;
Face type blade described in described wearing layer is coated on directly and describedly face directly on whole outer surfaces of type shock plate;
And/or;
Described first angle is 120-180 °.
4. impeller according to claim 1, is characterized in that:
Described type blade of facing directly is only arranged at the side of described wheel disc on the surface;
Described type shock plate of facing directly extends to opposite side surface on the surface from the side of described wheel disc.
5. impeller according to claim 1, is characterized in that:
Described wheel disc is provided with at least one balance pipe being close to described position of taking turns disk center.
6. a connected superfine pulverizer, is characterized in that, comprising:
The interior sawtooth circle of drive unit, the entrance side end cap being provided with charging aperture, the outlet side end cap being provided with discharging opening and annular, and described entrance side end cap, described outlet side end cap, described interior sawtooth corral are set as a chamber;
And the impeller be provided with rotationally in described chamber as described in any one of claim 1-5, described impeller is connected with described drive unit, and is rotated by described drive unit driving;
And the periphery of type of facing directly the shock plate of described impeller is located at by described interior sawtooth circle, the crown end of described interior sawtooth circle and the described tail end of type shock plate of facing directly at a distance of a distance, and form a space for grinding between described interior sawtooth circle and described impeller;
Material enters described chamber from described charging aperture, and arrives described discharging opening behind the described space for grinding.
7. connected superfine pulverizer according to claim 6, is characterized in that:
The sawtooth angle of described interior sawtooth circle is 60-120 °;
And/or;
The sawtooth of described interior sawtooth circle comprises windward side and lee face according to the rotation direction of impeller, the angle of described windward side and radial direction is the second angle, the angle of described lee face and radial direction is the 3rd angle, and described second angle is less than described 3rd angle;
And/or;
The surface attachment of described interior sawtooth circle has wearing layer.
8. connected superfine pulverizer according to claim 6, is characterized in that:
Described outlet side end cap comprises inboard partition and outside end cap further, and described inboard partition is close to described interior sawtooth circle side and arranges;
The spin chamber of an annular is formed between described inboard partition and described outside end cap, and the entrance of described spin chamber and the described chamber that impeller is set, the outlet of described spin chamber is communicated with described discharging opening.
9. connected superfine pulverizer according to claim 8, is characterized in that:
The entrance of described spin chamber is annular inlet;
And/or;
The outlet of described spin chamber is arranged along the revolution tangential direction of spin chamber.
10. connected superfine pulverizer according to claim 8, is characterized in that:
The bottom of described spin chamber is provided with first and falls cinder notch.
11. connected superfine pulverizers according to claim 6, is characterized in that:
The bottom of described interior sawtooth circle is provided with second and falls cinder notch;
And/or;
The outside of described interior sawtooth circle is coated with heat-conducting layer.
12. 1 kinds of System of Ultra Thin Power Rubbing, is characterized in that, comprising:
Charging gear, connected superfine pulverizer according to any one of claim 6-11, be positioned at the air-blast device of feed side or be positioned at blower unit, the gas-solid separating device of exit side;
Described charging gear is communicated with the charging aperture of described connected superfine pulverizer;
Described air-blast device is communicated with the charging aperture of described connected superfine pulverizer; Or described blower unit is communicated with the discharging opening of described connected superfine pulverizer;
The entrance of described gas-solid separating device is communicated with the discharging opening of described connected superfine pulverizer.
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| CN112203769A (en) * | 2018-05-15 | 2021-01-08 | H·普里霍达 | Method for improving the productivity of a grinding installation |
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| CN115461154A (en) * | 2020-04-30 | 2022-12-09 | 维克蒂斯私人有限公司(作为Jjb信托的受托人) | Rotor of grinding machine |
| CN113970114A (en) * | 2020-09-11 | 2022-01-25 | 中国科学院上海高等研究院 | Method for generating power by utilizing biomass and biomass power generation system |
| CN113970114B (en) * | 2020-09-11 | 2023-11-03 | 中国科学院上海高等研究院 | Method for generating power by using biomass and biomass power generation system |
| CN113000173B (en) * | 2021-03-29 | 2022-08-05 | 南京工程学院 | Horizontal hydraulic bidirectional hedging high-speed turbulent mill for superhard nano crushing |
| CN113019640A (en) * | 2021-03-29 | 2021-06-25 | 南京工程学院 | Efficient superhard ultramicro powder vertical hydraulic turbulent mill |
| CN113000173A (en) * | 2021-03-29 | 2021-06-22 | 南京工程学院 | Horizontal hydraulic bidirectional hedging high-speed turbulent mill for superhard nano crushing |
| CN113996429A (en) * | 2021-10-21 | 2022-02-01 | 山东鑫海矿业技术装备股份有限公司 | Wear-resistant composite impeller for vortex crushing device |
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| CN115254307A (en) * | 2022-06-22 | 2022-11-01 | 张华� | Starch production is with novel rubbing crusher system |
| CN115254308A (en) * | 2022-06-22 | 2022-11-01 | 张华� | Starch-rich raw material milling process |
| 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 |
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