CN1929925B - High turbulence mill and its bi-negative pressure turbine - Google Patents
High turbulence mill and its bi-negative pressure turbine Download PDFInfo
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- CN1929925B CN1929925B CN2005800081972A CN200580008197A CN1929925B CN 1929925 B CN1929925 B CN 1929925B CN 2005800081972 A CN2005800081972 A CN 2005800081972A CN 200580008197 A CN200580008197 A CN 200580008197A CN 1929925 B CN1929925 B CN 1929925B
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Abstract
The invention relates to a high turbulence mill for processing supermicro powder and nano materials, including a driving device provided on a base ; a hollow grinding chamber on which a stator guide toothed ring is secured ; a bi-negative pressure turbine rotatablely provided in the said grinding chamber ; a hopper for feeding material via a feed-in tube into the grinding chamber ; an outlet tube connected with the grinding chamber for transporting pulverized product ; and a controlling device for electrically operating and controlling the high turbulence miIl. When the especially designed bi-negative pressure turbine rotates at high speed by the driving of an electric shaft in the grinding chamber, high vortex and turbulence is formed in the grinding chamber, thereby generates gas-solid two phase current. By the high turbulence, materials are severely ground by themselves each other and generate severe collision and wear force, therefore materials are crashed effectively.
Description
Technical field
The present invention relates to a kind of mechanical device that is used to make ultrafine powder and nano material, refer to a kind of especially various materials being carried out " high turbulence mill " of ultramicro grinding and being used for a kind of " bi-negative pressure turbine " of this high turbulence mill.High turbulence mill of the present invention not only can be used for leading-edge fields such as military project, space flight; And in different industries, extensively be able to use, like relevant industries such as microelectronics, new medicine, new material, new forms of energy and chemical industry, machinery, metallurgy, environmental protection, food, daily use chemicals.
Background technology
The ultrafine powder technology is called cross-centennial new and high technology by domestic and international scientific and technological circle.
Along with developing rapidly of science and technology, the Application Research of superfine material and nano material has broad application prospects, and to promoting the industrial technology progress important role is arranged.Generally be called superfine material with 1 micron with thin powder, 0.1 micron is called nano material with thin powder.
The technology of preparing of superfine material (submicron order), the present report of also finding to have this respect both at home and abroad has and reports that superfine material is a kind of bottleneck material that is limited between super-fine material and the nano material, does not also have technology of preparing to produce at present.
The production equipment and the technology of super-fine material mainly contain at present: mechanical impact crusher, airslide disintegrating mill and oscillating mill etc.The general character of these technical equipment is that broken mill limit granularity can only reach about 5 microns.The technology of preparing of nano material report at present is many, mainly uses the chemical method preparation, and solid phase method, liquid phase method, vapor phase method and plasma method, laser method etc. are arranged.Other has report to discuss, and the nano material that adopts chemical method to produce tends to change the physical property of material itself, does not reach the result of use of nano material, and agglomeration traits is difficult to solve, and production efficiency is low, the processing cost costliness.Can only produce in laboratory at present, can't realize suitability for industrialized production.
Superfine material (sub-micron and nanoscale) is the basic material of 21 century, is one of focus of current high-tech area international competition.Can the physics technology of preparing produce superfine material and nano material is the scientific research project of striding the epoch that present scientific and technological circle thirst for and pay close attention to very much.Present countries in the world are industrially developed country particularly, and government all drops into the research and development that huge fund is carried out this respect every year.
Summary of the invention
In view of the present situation of ultrafine powder material and nano materials research application at present and the technical problem of existence, the purpose of this invention is to provide a kind of milling equipment more more advanced than prior art, it can produce required ultrafine powder and nano-powder efficiently.
To achieve these goals; The invention provides a kind of bi-negative pressure turbine, be used for high turbulence mill, it is characterized in that; Comprise: a leaf dish and a plurality of blades that are arranged on these two sides of leaf dish; Wherein this blade circumferentially evenly distributes on each edge, side of this leaf dish, and rotation direction is identical, and the blade that is positioned at this side of leaf dish circumferentially staggers with the blade edge that is positioned at this leaf dish another side each other.This bi-negative pressure turbine also has a plurality of impact tooth plates, and each said impact tooth plate comprises that an installation portion is connected the operate portions of this installation portion with one; Be formed with paired impact teeth at the top of this operate portions, two impact teeth in every impact tooth with tooth top relatively away from mode tilt.
Aforesaid bi-negative pressure turbine, wherein, the outline of this blade is the throwing arc, and its cross section is L-shaped, comprises a base portion and from the vertically extending flank of this base portion; The base portion inboard of this blade is processed with two screws, is used for through screw this vanes fixed at this Ye Panshang.
Aforesaid bi-negative pressure turbine, wherein, the outboard end of the base portion of this blade is formed with one first inclined-plane, and the angle on this first inclined-plane and leaf dish plane is 30 °～60 °;
Like the described bi-negative pressure turbine of book, wherein, this blade is formed with one second inclined-plane near a side end of leaf disk center, and the angle on this second inclined-plane and leaf dish plane is 45 °～70 °.
Aforesaid bi-negative pressure turbine, wherein, the basic circle of the radially outer edge of the base portion of this blade and leaf dish coincide, the radially inner edge of a plurality of blades be positioned at the concentric circumference of this basic circle on; The horizontal inner edge of this blade and outer lateral edges are two sections arcs with together circle center; Throw arc thereby make this blade form.
Aforesaid bi-negative pressure turbine; Wherein, The horizontal inner edge of the arc of this blade and the together circle center of outer lateral edges are confirmed by following mode: the intersection point of the vertical line at the center through the leaf dish and the basic circle of leaf dish is first intersection point, is the center of circle with leaf disk center, is that radius is made arc with 0.25～0.35 times leaf dish radius; This arc is second intersection point with the intersection point that forms through RADIAL leaf disk center, become miter angle with this vertical line; Being the center of circle with this first intersection point and second intersection point respectively then, is that radius is made arc with the radius of leaf dish, and the intersection point of two arcs is this together circle center.
Aforesaid bi-negative pressure turbine, wherein, said impact tooth plate is located between the two adjacent blades of leaf dish both sides in pairs.
Aforesaid bi-negative pressure turbine wherein is formed with two installing holes on the installation portion, be used for should impacting tooth plate through screw and be fixed on this Ye Panshang; This working position is in the top of this installation portion, and itself and this installation portion is integrally formed; Said impact teeth is a rectangular teeth, and the direction of said impact teeth is identical with the circumferencial direction of leaf dish.
The present invention also provides a kind of high turbulence mill that uses above-mentioned bi-negative pressure turbine, is used to process super-fine powder, wherein, comprising: a drive unit, be arranged on the base, and comprise the motor and the driving shaft that couple each other; The mill chamber of one hollow; Be arranged on this base; On the internal perisporium of this mill chamber, be set with stator guiding gear ring; The left and right sides of mill chamber is equipped with inner cover plate flange and outer cover plate flange respectively, and wherein the center of inner cover plate flange in left side has pilot hole, and the driving shaft of drive unit is connected with bi-negative pressure turbine in being arranged on mill chamber through this pilot hole; On this left side inner cover plate flange, the position on the upper side of this pilot hole, also have charging aperture; The inner cover plate flange center position on right side has discharge opening; One bi-negative pressure turbine can be rotatably set in the said mill chamber, and is driven by this drive unit; One hopper is used for through a feed pipe this charging aperture convey materials to this mill chamber; One discharge nozzle is communicated with this charging hole of this mill chamber, is used to export the product after the pulverizing; And a control device, be used for this high turbulence mill is carried out electrical control; When in this mill chamber, rotating at a high speed under the driving of said bi-negative pressure turbine at this motor; Can in inner air of mill chamber and material, evoke eddy current and turbulent flow; Thereby the formation Dual-Phrase Distribution of Gas olid, strong autogenous grinding takes place in material each other under the effect of stator guiding gear ring and high turbulence; Produce strong bump, shear force simultaneously, thereby material is pulverized effectively.
Aforesaid a kind of high turbulence mill, its mill chamber are water-cooled, and wherein mill chamber is divided into inside and outside two Room, and the mistress of this mill chamber is connected with a cyclic water tank.
Aforesaid a kind of high turbulence mill wherein, also comprises a screw input feeder, and the two ends of this screw input feeder are connected with feed pipe with this hopper respectively, is used under the driving of a buncher to this mill chamber convey materials.
Aforesaid a kind of high turbulence mill, wherein, the other end of this discharge nozzle is connected with a ball adapter; This ball coupling is connected with a cyclone feeder; This cyclone feeder is connected with a cloth bag collector, and this cloth bag collector is connected with an air-introduced machine, is used to accomplish the collection of product.
Aforesaid a kind of high turbulence mill, wherein, the number of teeth of this stator guiding gear ring is more than 50, and the flute profile indention of each tooth, and profile angle is 40 °～50 °.
Turbulence mill of the present invention is inventor's two negative pressure of utilizing the turbulent flow principle design, the turbine of two eddy current, and the high turbulence that when rotating at a high speed, produces moves comminuting matter.The generation of high turbulence is high-strength eddy current energy exchange, and it is in high reynolds number (Re＞1.5 * 10
5) take place down.Reynolds number in the turbulence mill of the present invention has reached Re＞6.6 * 10
5, really can produce the high turbulence motion.
The characteristic of turbulent motion is a scrambling, promptly forms random random motion by the whirlpool body that differs in size.It the characteristic of essence be " turbulence ", i.e. at random pulsation.Its velocity field and pressure field all are at random, not only to the time, and all are at random as far as the space.The heavy characteristic of another of turbulent motion is a diffusivity.Because the whirlpool body mixes each other, cause fluid internal energy exchange in the turbulent flow, the particle that momentum is big is passed to the little particle of momentum with momentum, the particle that momentum is little influences the big particle of momentum again, and the result spreads the transport that has increased momentum, quality.
When being in the field of turbulent flow by the pulverizing object, just constituted Dual-Phrase Distribution of Gas olid, from the end energy that bi-negative pressure turbine obtains, the effect of inertia through rotating at a high speed passes to micro cyclone step by step by maelstrom.In this complicated turbulence process, produce strong bump, autogenous grinding, shear force, thereby material is pulverized effectively.
Because this turbulent flow grinding machine has been obtained important breakthrough from grinding mechanism, it has two negative pressure, two eddy current, high turbulent flow, high centrifugal technical characteristic.Pulverize industry specialists and seek assiduously and thirst for solving thereby efficiently solve up to now various countries, but fail to obtain the mechanical disintegration difficult problem of major progress all the time.It has pulverizes energy-conservation, fineness ultra micro (sub-micron) and the good beneficial effect of environmental-protecting performance requirement.
High turbulence mill of the present invention is compared with existing more advanced airslide disintegrating mill, is 10 times of airflow milling with output under the power, and energy consumption is merely 10% of airflow milling.Its broken mill energy exceeds one times than airslide disintegrating mill, and smashing fineness has been broken through submicron order, and particle mean size has reached nanoscale, on quality and quantity, has obtained unforeseeable technique effect.
The invention of high turbulence mill and test-manufacturing successfully for China's physics method of marching toward, realizes that suitability for industrialized production superfine material and nano material provide feasible approach.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further described.
Description of drawings
Figure 1A is the front view according to high turbulence mill of the present invention;
Figure 1B is the side view according to high turbulence mill of the present invention;
Fig. 2 is the structural representation of the bi-negative pressure turbine in the high turbulence mill of the present invention;
Fig. 3 is along the cutaway view of A-A line among Fig. 2;
Fig. 4 is mounted in the view of the arc shaped blade on the turbine among Fig. 2;
Fig. 5 is the cutaway view along the B-B line of Fig. 4;
Fig. 6 is that the C of Fig. 4 blade is to view;
Fig. 7 is the view that impacts tooth plate among Fig. 2;
Fig. 8 is the side view of the impact tooth plate of Fig. 7;
Fig. 9 is the assembling sketch map of the bi-negative pressure turbine among Fig. 1;
Figure 10 is the stator guiding gear ring assembling sketch map of Fig. 1.
Wherein, drawing reference numeral is following:
Hopper 1 impacts tooth plate 20
Cyclic water tank 2 mill chambers 21
Buncher 3 leaf dishes 29
Feed pipe 4 leaf dish basic circles 291
Support 5 screws 151,152
Drive unit 6 base portions 153
Support 7 flanks 154
Fastening bolt 10 radially outer edges 157
Inner cover plate flange 12 outer lateral edges 159
Outer cover plate flange 13 horizontal inner edges 160
Screw input feeder 14 installation portions 210
Bi-negative pressure turbine 16 installing holes 230,240
Stator guiding gear ring 18
The specific embodiment
Shown in Figure 1A and 1B, be a kind of high turbulence mill provided by the invention.This high turbulence mill mainly is made up of base 8, mill chamber 21, drive unit 6, screw input feeder 14 and control device etc.Whole turbulence mill is horizontal type.Drive unit 6 is installed on the base 8 through support 7; It comprises motor and the driving shaft that is connected with the output shaft of this motor; In an embodiment of the present invention; This motor is preferably variable-frequency motor, and this driving shaft links to each other with this variable-frequency motor, is used to drive the bi-negative pressure turbine 16 that mill chamber 21 inside are set.
Screw input feeder 14 is installed on the base 8 through support 5, and is positioned at the side top of mill chamber 21.The top of screw input feeder 14 is provided with hopper 1, is used for carrying treating that comminuting matter arrives this feeder 14.This screw input feeder 14 is driven by buncher 3.
In mill chamber 21 inside, be provided with bi-negative pressure turbine 16 and stator guiding gear ring 18.This bi-negative pressure turbine 16 is connected with the driving shaft of this drive unit, under the driving of this driving shaft in this mill chamber 21 high speed rotating.The concrete structure of this bi-negative pressure turbine 16 sees below said.This stator guiding gear ring 18 is fixedly installed on the inner peripheral surface of this mill chamber 21.
Above the side of this mill chamber, be provided with a cyclic water tank 2.This mill chamber 21 is divided into inside and outside two Room, and the mistress of this mill chamber 21 is connected with this cyclic water tank 2.When this high turbulence mill work, can be this mill chamber cooling through this cyclic water tank 2, thereby avoid temperature-sensitive material, and influence the generation of its physical property variation phenomenon like this because the pulverizing temperature is too high.
The left and right sides of mill chamber 21 is equipped with inner cover plate flange 12 and outer cover plate flange 13 respectively.Wherein the center of inner cover plate flange 12 in left side has pilot hole, and the driving shaft of drive unit 6 is connected with bi-negative pressure turbine 16 in being arranged on mill chamber 21 through this pilot hole, and is fixed by fastening bolt 10.On this left side inner cover plate flange 12, the position on the upper side of this pilot hole, also have charging aperture, a feed pipe 4 has connected this screw input feeder 14 and this charging aperture.The center of right side outer cover plate flange 13 has discharge opening, and a discharge nozzle 9 connects this discharge opening and a ball coupling 11 that is arranged on mill chamber 21 outsides.Wherein, the outer cover plate flange 13 on this right side can be changed according to the particle diameter of required discharging, when discharge opening is big, can obtain thicker product, and output increases simultaneously; When discharge opening hour, can access trickle product, output reduces simultaneously.
Control device mainly is made up of electrical control cabinet and control panel, be used for according to various situation control turbulence mills startup, stop and the output speed of motor.
As shown in Figure 2, bi-negative pressure turbine 16 of the present invention comprises leaf dish 29 and is assemblied in the multi-disc blade 15 on the leaf dish 29.This blade is along two sides that circumferentially are assemblied in the leaf dish equably, and simultaneously, the blade that is positioned at both sides is staggered mutually.That is to say that the blade of leaf dish both sides is not symmetrical, but the certain distance that along the circumferential direction staggered each other.In addition, in order to increase crushing effect, also can on this leaf dish, assemble multi-disc and impact tooth plate 20, in order to cooperate work done with this blade 15.This impact tooth plate 20 is assemblied in the leaf position that the lobus dexter sheet staggers of facing left, and left-right symmetric is installed.This impact tooth plate 20 is to be installed on this leaf dish 29 with bolt, nut, pad, bullet pad, hexagon socket head cap screw with blade 15, and rotation direction is identical simultaneously.As shown in Figure 2, fan-shaped impact tooth plate 20 respectively is distributed in the left and right sides of leaf dish 29 with blade 15, thereby can be so that this bi-negative pressure turbine reaches dynamic balancing.In the present embodiment, be provided with 8 groups of blades and impact tooth plate, that is to say, be respectively arranged with 4 groups of blades in the both sides of leaf dish 29 and impact tooth plate.
Like Fig. 4, Fig. 5 and shown in Figure 6, the profile of this blade 15 is the hypsokinesis shape of throwing arc.And its cross section is one " L " shape.This blade 15 comprises the flank 154 that extend perpendicular to the direction of this base portion 153 on a base portion 153 and edge.On its base portion 153, be processed with two holes 151 and 152, be used for this blade 15 being fixed on this leaf dish 29 through screw.As shown in Figure 5, these base portion 153 outside side ends form one first inclined-plane 155, and this inclined plane 155 is 30 °～60 ° with the angle on leaf dish 29 planes, is preferably 45 °.And blade 15 has formed one second inclined-plane 156 near the side of the O of leaf disk center, and this second inclined-plane 156 is formed on the end near leaf disk center of this base portion 153 and flank 154.The angle β on itself and leaf dish 29 planes is 45 °～70 °, is preferably 60 °, and is as shown in Figure 6.
In addition, like Fig. 4 and shown in Figure 2, the radially outer edge of the base portion 153 of this blade 15 157 coincide with the basic circle 291 of leaf dish 29, the radially inner edge 158 of a plurality of blades be positioned at the concentric circumference of this basic circle 291 on; The horizontal inner edge 160 of this blade is to have two sections arcs of concentric mutually with outer lateral edges 159.In one embodiment, for the feasible blade that is installed in Ye Panshang has the throwing arc, thereby reduce the wearing and tearing of blade; The center of circle of this horizontal inner edge 160 and outer lateral edges 159 is confirmed as follows: as shown in Figure 4, O is the center of leaf dish 29, and the intersection point of the vertical line through O and the basic circle 291 of leaf dish 29 is C; With O is the center of circle; 0.25～0.35 times with leaf dish radius is that radius is made arc 292, this arc 292 with through center of circle O, become the RADIAL of miter angle to meet at the B point with straight line CO, be the center of circle with B point and C point respectively then; Radius with the leaf dish is that radius is made arc, and the intersection point of two arcs is the common center of circle of this horizontal inner edge 160 and outer lateral edges 159.
Like Fig. 7 and shown in Figure 8, impact tooth plate 20 and comprise an installation portion 210 and an operate portions 220.Installation portion 210 can have any shape, as long as the shape that can be installed between the blade of Ye Panshang all can.As shown in Figure 2, first embodiment of this installation portion is fan-shaped for distortion, thereby answers with the profile phase of blade.Like Fig. 7 and shown in Figure 8, this installation portion is that an end is semicircular rectangle.On installation portion, be formed with two installing holes 230,240, be used for to impact tooth plate 20 and be fixed on this leaf dish 29 through screw.This operate portions 220 is positioned at the top of this installation portion 210, and itself and this installation portion 210 is integrally formed, and also a separation member is fixed on this installation portion 210 through screw.In the embodiment of Fig. 7 and Fig. 8, the lower end of operate portions 220 is formed with a dovetail groove, on installation portion 210, is formed with a guide rail, thereby is convenient to change worn out operate portions.Top in this operate portions 220 is formed with impact teeth, and this impact teeth is a rectangular teeth, and the direction of tooth is identical with the circumferencial direction of leaf dish 29.
As shown in Figure 9, the installation process that the two negative pressure impellers 16 that assemble are installed in the mill chamber 21 extend on the inner driving shaft of mill chamber for this pair negative pressure impeller 16 is enclosed within, and carries out fastening with fastening bolt 10 then.Like this, two negative pressure impellers 16 will be under the driving of motor, in mill chamber 21 inner rotation.
Shown in figure 10, stator guiding gear ring 18 of the present invention is assembled on mill chamber 21 inner peripheral surfaces.The number of teeth of stator guiding gear ring 18 is more than 50.The flute profile indention of each tooth, profile angle are 40 °～50 °.The internal perisporium mount of this guiding gear ring 18 and mill chamber 21.The mode that its fixed form can adopt interference fit and/or key to cooperate.
The course of work of high turbulence mill of the present invention is described below.
Material gets into mill chamber 21 by hopper 1, screw input feeder 14 through feed pipe 4.The logical bi-negative pressure turbine 16 that drives of variable-frequency motor makes its rotation, produces negative pressure guiding turbulent flow band, and material is clashed into rapidly by the impulsive force that high turbulent flow forms, high speed shear and being pulverized.
Since bi-negative pressure turbine 16 be by about throw arc hypsokinesis blade 15 and impact tooth plate 20 with swallow-tail form and be assembled.Blade 15 is scalene cone and has formed swirl shape near an end of sharf simultaneously, when rotating at a high speed, has formed two eddy current, and two eddy current have produced two negative pressure again, and the generation of two negative pressure has formed high-strength centrifugal force again.Under this action of negative pressure, pulverized powder can not spill from the perforate of the flange plate of the mill chamber left and right sides in the mill chamber 21, thereby has improved the sealing property of this mill chamber.When pulverized solid material is in the high velocity turbulent flow field in mill chamber 21; Just constituted Dual-Phrase Distribution of Gas olid; Turbulence energy from turbine 16 acquisitions; Pass to micro cyclone through effect of inertia step by step by maelstrom, material produces strong bump, autogenous grinding, shear force in this turbulent motion, thereby material is pulverized effectively.In addition, stator guiding gear ring 18 produces the guiding shearing force to material in mill chamber 21, and powder in zigzag turbulent motion zone strong autogenous grinding takes place each other, quickens effective refinement of material.
When by the micro mist of dispersion and fining, along with alleviating of micro mist proportion, throw off centrifugal district, drift in centrifugal external zones and sent into ball coupling 11 by the suction of discharge nozzle 9 air inducing, reclaimed by cyclone feeder and cloth bag collector.
The size of the required particle diameter of finished product can guarantee the precision of material with the next adjusting arbitrarily of the method for adjustment air inducing size or with the linear velocity that changes turbine.
Industrial applicibility
The advantage that the present invention is compared with prior art had and the beneficial effect of generation are:
1, has considerable energy-saving effect.
The traditional mechanical milling equipment is to utilize the direct driven medium of mechanical energy to move comminuting matter, and crush efficiency is low, and energy consumption is high.Airslide disintegrating mill is to utilize to penetrate up to velocity of sound or subsonic air-flow to be used for comminuting matter.Mechanical energy converts the velocity of sound air motion into can need lot of energy, and the former is bigger for its ability loss-rate.
" high turbulence mill " Energy saving mechanism of the present invention and effect are that effect of inertia trends towards the micro cyclone scope of energy dissipation to high wave number in the turbulent flow; And viscous effect only just exists in high wave-number range consumingly, and consumes the energy that is transported from maelstrom by effect of inertia by it.Reynolds number Re in this turbulence mill=6.6 * 10
5, (high turbulence is in high reynolds number Re＞1.5 * 10
5Following generation), really can produce the high turbulence motion.Reynolds number is bigger, and effect of inertia is stronger, and it can be transported to higher wave-number range with energy, the compelled effect that on higher wave-number range, just can manifest viscous force of viscous effect.When Reynolds number is fully big, exhaustion range is located in from containing on the very high wave number of energy range, at this moment contain energy range and do not participate in viscosity consume effect fully.
" high turbulence mill " of the present invention utilizes this characteristic of large Reynold number in the turbulent motion to practice thrift to pulverize energy consumption just.Because the Reynolds number of turbulence mill is up to Re=6.6 * 10
5, because this Reynolds number is fully big, so effect of inertia preponderates, and makes material obtain to pulverize effectively, that is to say that the end energy that is transported by mechanical device (turbine) can send material to fully, effectively pulverizes, useless power consumption is few.
This characteristic of high turbulence mill is that all milling equipments of using at present are incomparable, and traditional mechanical milling equipment utilizes the direct driven medium of mechanical energy to move comminuting matter, and crush efficiency is extremely low.For example effective pulverizing merit of ball mill is merely about 0.6%, and has 95～99% energy to be converted into heat and dissipation approximately.Airslide disintegrating mill is to utilize to penetrate up to velocity of sound or subsonic air-flow to come comminuting matter, and mechanical energy converts that the velocity of sound air motion is talkative to need to consume lot of energy into, its can loss-rate the former is bigger.
High turbulence mill of the present invention is that material is pulverized in the turbulent motion that is produced by motor-driven turbine, and useless power consumption is few.The actual measurement energy consuming ratio: one-size is 5% of an airflow milling with power consumption under the output, is 10% of mechanical shock mill, is 15% of vibromill.Social benefit that its energy-saving effect produced and economic benefit are worth huge.
2, has gratifying environment protecting.
The world today has caused global great attention to control environmental pollution and man-made noise, and particularly industrialization elimination of dust contamination difficulty is maximum, and existing disintegrating apparatus all exists powder in various degree to leak and the big technological difficulties of noise of equipment.And the mill chamber device of high turbulence mill of the present invention is the turbine that utilizes particular design, when this turbine rotates at a high speed, throws camber hypsokinesis blade about the turbine both sides and is being the inclined-plane near leaf dish axis hole outer rim place and leaf dish axle place.When turbine rotated, the mill chamber both sides had all formed negative pressure like this, and were vorticity, had produced high-intensity eddy current, also can not leak thereby the axis hole that has effectively guaranteed the mill chamber center need not seal powder.
In addition, the bi-negative pressure turbine of high turbulence mill, leaf dish two sides symmetry and crossover location are equipped with blade and the shock plate that quantity equates respectively, and dynamic balancing is fairly good; Steadily reliable during the turbine rotation, directly drive by motor in addition, there is not reducing gear; Noise of equipment is very little, generally about 70 decibels.
3, have the unique technique characteristics, high in technological content
Superfine technique is a kind of material New Machining Technology that derives from for the development that adapts to modern high technology the early 1990s, has only minority developed country to have this technology at present.China adopts the air-flow crushing technology at present, can material be ground into the super-fine material of 10 μ m (1200 order) to 2.5 μ m (5000 order), but the ubiquity energy consumption is high, and production efficiency is low, the technical problem that machining accuracy is not high.Along with rapid development of modern science and technology, to the technology of preparing of powder body material, require increasingly highly, develop to preparation high-precision sub-micron and nanoscale direction.With the preparation mechanical technology of physics technology of preparing production sub-micron and nanometer grade powder material, this respect technology report is not arranged also both at home and abroad at present.
The research and development of " high turbulence mill " are test-manufactured successfully, and extremely great realistic significance is arranged, and its technology has the unique function of following aspect:
(1) pulverizes the precision height
Finished product granularity 0.1-0.9 μ m, the powder precision can be regulated, and efficiently solves from grinding mechanism that powder process is thin, precision is high, the technical barrier of narrow particle size distribution.
(2) good physical performance
The physical behavio(u)r that its technological pulverization principle is pure, material head-on collision autogenous grinding is pulverized, and chemical reaction does not take place, thereby effectively kept original character of material itself.
(3) cryogenic property is good
Mill chamber is provided with cooling device, pulverizes to be in low temperature environment, pulverizes moment completion at low temperatures.Thereby avoided temperature-sensitive material because the pulverizing temperature is too high, and influenced the variation phenomenon generation of its physical property.
(4) collection pulverizing, classification, modifying production process are one
Existing ultra-fine preparation does not match classifying equipoment and just is difficult to produce qualified superfine powder, produces active powder and also needs supporting modified device.Thereby complex process, equipment manufacturing cost is high." high turbulence mill " has the unique technique function, can be reduced to a kind of operation to pulverizing, classification, three kinds of manufacturing procedures of modification, pulverizes simultaneously at material, and grading and powder-modified processing are accomplished simultaneously.This mechanism innovation of " high turbulence mill " is that all milling equipments of using at present are unrivaled, will bring a new technological revolution to grinding machine industry.
The above is of the present invention preferred embodiment a kind of, and it is not to be used to limit the present invention; On the basis of foregoing, the equivalent structure of having done changes, for example; Be equipped with more than 8 on the turbine or be less than 8 blade; Shape structure to blade slightly changes, and does not all depart from essence of the present invention and spirit, and therefore the protection domain of invention is confirmed by the claims of enclosing.
Claims (13)
1. bi-negative pressure turbine; Be used for high turbulence mill; It is characterized in that, comprising: a leaf dish (29) and be arranged on a plurality of blades (15) of these (29) two sides of leaf dish, wherein this blade in each side of this leaf dish along circumferentially evenly distributing; And rotation direction is identical, and the blade that is positioned at this side of leaf dish circumferentially staggers with the blade edge that is positioned at this leaf dish another side each other; This bi-negative pressure turbine also has a plurality of impact tooth plates (20), and each said impact tooth plate (20) comprises that an installation portion (210) is connected the operate portions (220) of this installation portion (16) with one; Top in this operate portions (220) is formed with paired impact teeth, two impact teeth in every impact tooth with tooth top relatively away from mode tilt.
2. bi-negative pressure turbine as claimed in claim 1 is characterized in that, the outline of this blade (15) is the throwing arc, and its cross section is L-shaped, comprises a base portion (153) and from the vertically extending flank of this base portion (154); The base portion inboard of this blade is processed with two screws (151,152), is used for through screw this blade (15) being fixed on this leaf dish (29).
3. bi-negative pressure turbine as claimed in claim 2 is characterized in that, the outboard end of the base portion of this blade is formed with one first inclined-plane (155), and the angle on this first inclined-plane and leaf dish (29) plane is 30 °～60 °;
4. bi-negative pressure turbine as claimed in claim 2 is characterized in that, this blade (15) is formed with one second inclined-plane (156) near a side end at leaf dish (29) center, and this second inclined-plane (156) is 45 °～70 ° with the angle β on leaf dish (29) plane.
5. like claim 2,3 or 4 described bi-negative pressure turbines; It is characterized in that; The radially outer edge (157) of the base portion (153) of this blade (15) and the basic circle (291) of leaf dish (29) coincide, the radially inner edge (158) of a plurality of blades be positioned at the concentric circumference of this basic circle (291) on; The horizontal inner edge (160) of this blade and outer lateral edges (159) are for having two sections arcs of together circle center; Throw arc thereby make this blade form.
6. bi-negative pressure turbine as claimed in claim 5; It is characterized in that; The horizontal inner edge of the arc of this blade and the together circle center of outer lateral edges are confirmed by following mode: the vertical line (OC) at the center (O) through leaf dish (29) is first intersection point (C) with the intersection point of the basic circle (291) of leaf dish (29); With leaf disk center (O) is the center of circle; With 0.25～0.35 times leaf dish radius is that radius is made arc (292), and this arc (292) is second intersection point (B) with the intersection point that forms through RADIAL (OB) leaf disk center (O), become miter angle with this vertical line (OC), is the center of circle with this first intersection point (C) and second intersection point (B) respectively then; Radius with the leaf dish is that radius is made arc, and the intersection point of two arcs is this together circle center.
7. bi-negative pressure turbine as claimed in claim 1 is characterized in that, said impact tooth plate is located between adjacent two blades (15) in leaf dish (20) both sides in pairs.
8. bi-negative pressure turbine as claimed in claim 7 is characterized in that, is formed with two installing holes (230,240) on this installation portion (210), is used for should impacting tooth plate (20) through screw and is fixed on this leaf dish (29);
This operate portions (220) is positioned at the top of this installation portion (210), is installed in this installation portion (210) through dovetail groove and upward is integrally formed; Said impact teeth is a rectangular teeth, and the direction of said impact teeth is identical with the circumferencial direction of leaf dish (29).
9. a high turbulence mill is used to process super-fine powder, it is characterized in that, comprising:
One drive unit (6) is arranged on the base (8), comprises the motor and the driving shaft that couple each other;
The mill chamber of one hollow (21) is arranged on this base (8), on the internal perisporium of this mill chamber (21), is set with stator guiding gear ring (18); The left and right sides of mill chamber (21) all is equipped with inner cover plate flange (12) and outer cover plate flange (13) respectively; Wherein the center of inner cover plate flange (12) in left side has pilot hole, and the driving shaft of drive unit (6) is connected with bi-negative pressure turbine (16) in being arranged on mill chamber (21) through this pilot hole; Inner cover plate flange (12) in this left side is gone up, the position on the upper side of this pilot hole, also has charging aperture; The inner cover plate flange center position on right side has discharge opening;
This bi-negative pressure turbine (16) can be rotatably set in the said mill chamber (21), and is driven by this drive unit (6);
One hopper (1) is used for through a feed pipe (4) this charging aperture convey materials to this mill chamber (21);
One discharge nozzle (9) is communicated with this discharge opening of this mill chamber, is used to export the product after the pulverizing; And
One control device mainly is made up of electrical control cabinet and control panel, is used for this high turbulence mill is carried out electrical control; Wherein, this bi-negative pressure turbine (16) is each described bi-negative pressure turbine among the claim 1-8.
10. a kind of high turbulence mill as claimed in claim 9 is characterized in that, this mill chamber (21) is a water-cooled, is divided into inside and outside two Room, and the mistress of this mill chamber is connected with a cyclic water tank (2).
11. like claim 9 or 10 described a kind of high turbulence mills; It is characterized in that; Also comprise a screw input feeder (14), the two ends of this screw input feeder (14) are connected with feed pipe with this hopper (1) respectively, are used under the driving of a buncher (3) to this mill chamber convey materials.
12. a kind of high turbulence mill as claimed in claim 9; It is characterized in that; The other end of this discharge nozzle (9) is connected with a ball adapter (11), and this ball coupling (11) is connected with a cyclone feeder, and this cyclone feeder is connected with a cloth bag collector; This cloth bag collector is connected with an air-introduced machine, is used to accomplish the collection of product.
13. a kind of high turbulence mill as claimed in claim 9 is characterized in that, the number of teeth of this stator guiding gear ring (18) is more than 50, and the flute profile indention of each tooth, and profile angle is 40 °～50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005800081972A CN1929925B (en) | 2004-03-23 | 2005-01-24 | High turbulence mill and its bi-negative pressure turbine |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410039858.5 | 2004-03-23 | ||
| CN200410039858 | 2004-03-23 | ||
| CN2005800081972A CN1929925B (en) | 2004-03-23 | 2005-01-24 | High turbulence mill and its bi-negative pressure turbine |
| PCT/CN2005/000104 WO2005089948A1 (en) | 2004-03-23 | 2005-01-24 | High turbulence mill and its bi-negative pressure turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1929925A CN1929925A (en) | 2007-03-14 |
| CN1929925B true CN1929925B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005800081972A Expired - Fee Related CN1929925B (en) | 2004-03-23 | 2005-01-24 | High turbulence mill and its bi-negative pressure turbine |
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| CN (1) | CN1929925B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105935620A (en) * | 2016-05-04 | 2016-09-14 | 广州致密纳米技术有限公司 | Preparation device for nano material |
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| CN102806130A (en) * | 2012-08-04 | 2012-12-05 | 王瑞琪 | Medium-free micro pulverizer |
| CN103752387B (en) * | 2014-01-12 | 2016-02-10 | 上海红箭自动化设备有限公司 | The abrasive dust structure of environment-friendly and energy-efficient eddy mill |
| CN113019640B (en) * | 2021-03-29 | 2022-07-22 | 南京工程学院 | Efficient superhard ultramicro powder vertical hydraulic turbulent mill |
| 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 |
| 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 |
| CN117943182A (en) * | 2024-03-22 | 2024-04-30 | 河北汇亚新材料集团股份有限公司 | Porous carbon-carbon molecular sieve superfine pulverizer and pulverizing method |
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| CN1929925A (en) | 2007-03-14 |
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