CN103706449A - Miniature negative pressure jet mill having crushing cavity with ellipsoidal structure - Google Patents
Miniature negative pressure jet mill having crushing cavity with ellipsoidal structure Download PDFInfo
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- CN103706449A CN103706449A CN201310740411.XA CN201310740411A CN103706449A CN 103706449 A CN103706449 A CN 103706449A CN 201310740411 A CN201310740411 A CN 201310740411A CN 103706449 A CN103706449 A CN 103706449A
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Abstract
The invention discloses a miniature negative pressure jet mill having a crushing cavity with an ellipsoidal structure. The miniature negative pressure jet mill comprises a collecting device, a motor, a control mechanism, an output pipe and a feeding device, and also comprises a negative pressure device and a fluid jet mill, wherein an output device is communicated with the fluid jet mill through the output pipe; a crushing cavity which is partially in an ellipsoidal shape is arranged in the jet mill; airflow inlet channels are arranged in two ends of an oval long shaft of one cross section of the crushing cavity; a material is added to the fluid jet mill through the feeding device; the motor is connected with a grading mechanism of the fluid jet mill through a belt wheel mechanism; the output pipe is connected with the top end of the fluid jet mill; the collecting device is connected with the output pipe; the material is added to the crushing cavity of the fluid jet mill through the feeding device under the control of the control mechanism, airflow flowing inside from each airflow inlet channel is utilized to crush the material, and the output pipe generates pressure along the flow directions of the material and the gas by the negative pressure device, so that the crushed material is output to the collection device through the output pipe.
Description
Technical field
The present invention relates to size reduction machinery, refer to especially a kind of small negative pressure airflow milling with ellipsoid structure crushing chamber.
Background technology
Airflow milling is to utilize air-flow material to be carried out to a kind of visual plant of micron-class superfine pulverizing, is widely used in the ultra-fine grinding of nonmetallic mineral and industrial chemicals.Airflow milling generally comprises source of the gas, raw material cabin, pulverizing chamber, grading wheel, the structures such as dust cell phone system, its operation principle is that gases at high pressure are accelerated into high velocity air by nozzle, this air-flow is injected pulverizing chamber, feed particulate material in pulverizing chamber is clashed into mutually, collision friction, thereby by crushing material, simultaneously, after pulverizing, particle enters graded region under the drive of air-flow, under the centrifugal action producing at the grading wheel of High Rotation Speed, carry out thickness grading, the fine grained that meets granularity requirements is discharged outside airflow milling, the raw material that not yet reaches pulverizing requirement returns in pulverizing chamber again and continues to pulverize.
The airflow milling of prior art, has many-sided shortcoming.
First, the airflow milling of prior art is bulky, and the occasion that is not suitable for the small-sized airflow milling of needs such as laboratory is used.Due in some occasion, such as laboratory, scientific research institution etc., need to carry out ultra-fine grinding to a small amount of material, and in prior art, most airflow milling are due to bulky and can not be suitable for.
Secondly, the airflow milling crushing chamber structure of prior art is asymmetric, causes internal gas flow to flow inhomogeneous, thereby the pulverized particles size of output is inhomogeneous, is difficult to meet the requirement of the projects such as scientific research to particle degree of grinding.
Summary of the invention
In view of this, the object of the invention is to propose a kind of small negative pressure airflow milling with ellipsoid structure crushing chamber.This small negative pressure airflow milling with ellipsoid structure crushing chamber is more suitable for the occasion of a small amount of crushing materials of needs such as laboratory.
Based on the above-mentioned purpose small negative pressure airflow milling with ellipsoid structure crushing chamber provided by the invention, comprise gathering-device, motor, controlling organization, efferent duct, feeding device, also comprise negative pressure device, airslide disintegrating mill; Described output device is communicated with described airslide disintegrating mill by described efferent duct; Described airslide disintegrating mill is provided with the axiolitic crushing chamber of part, and the transverse two ends of a cross section of described crushing chamber are provided with air-flow admission passage; Material adds in described airslide disintegrating mill by described feeding device; Motor is by connecting the classification mechanism of described airslide disintegrating mill with wheel mechanism; Described efferent duct is connected with the top of described airslide disintegrating mill; Described gathering-device is connected with described efferent duct; Under the control of described controlling organization, material adds in the crushing chamber of described airslide disintegrating mill by described feeding device, the air-flow flowing into from described air-flow admission passage is pulverized described material, described negative pressure device makes along material and gas circulating direction, to produce pressure in described efferent duct, makes the material after described pulverizing output to described gathering-device through described efferent duct.
Preferably, described ellipsoid shape refers to meet formula in cartesian coordinate system:
shape.
Optionally, described airslide disintegrating mill also comprises the adapter cavity being connected with described crushing chamber and the classification chamber being connected with described adapter cavity; Described classification chamber is circular; The cross section that described adapter cavity is connected with described crushing chamber is for oval, and the cross section that described adapter cavity is connected with described classification chamber is for circular.
Optionally, also comprise classification mechanism, described efferent duct is communicated with described airslide disintegrating mill by described classification mechanism.
Optionally, described crushing chamber bottom surface is provided with the lower nozzle that air-flow enters.
Optionally, described air-flow admission passage extends to crushing chamber is inner, to the elliptic focus place of respective cross section.
Optionally, described air-flow admission passage is Lavalle gas nozzle.
Optionally, described classification mechanism comprises grading wheel; Described grading wheel has the inner chamber being communicated with described efferent duct.
Optionally, described classification mechanism comprises turbine clasfficiator.
Optionally, described grading wheel comprises interconnective wheel shaft and the classification part being connected with wheel shaft bottom; Described wheel shaft is hollow tubular, stretches out outside described airslide disintegrating mill, by two bearings and a bottom bracket axle, is set in an outer sleeve; Described classification part comprises columniform inner chamber, is arranged in described airslide disintegrating mill; Described wheel shaft one end is communicated with described inner chamber, and the other end is communicated with described efferent duct.
Optionally, described classification part comprises circular upper base, circular go to the bottom and one be blade; The circumference that described blade connects described upper base and goes to the bottom, surrounds into cylindrical cavity with described upper base with going to the bottom; Described upper base middle part is provided with manhole, and described wheel shaft is communicated with described cavity by this through hole.
Optionally, described a series of blade spaced set.
Optionally, described classification mechanism also comprises lower ball cover, outer sleeve, upper ball cover, caping, belt wheel, ring flange; Described two bearings are arranged at respectively described outer sleeve two ends, and outer sleeve approaches one end of described classification part described in described lower ball cover shutoff, the outer sleeve other end described in described upper ball cover shutoff, and described bottom bracket axle is arranged between described two bearings; Described caping connects described upper ball cover, is connected with described ring flange flange simultaneously; Described belt wheel is fixed on described wheel shaft, drives described wheel shaft to rotate; Described ring flange is set in described wheel shaft.
Optionally, described ring flange is hubbed clip-on-welding flange, comprises the first flange, neck and the second flange; Described neck is stepped, and ladder bottom is greater than top internal diameter, and its location is connected with described the second flange, and its top is connected with described the first flange; The neck sidewall being connected with described the first flange interface outstanding along axis direction to neck interior and that match with described wheel shaft is connected with described wheel shaft; Belt wheel described in the neck side walls enclose that described the first flange connects, which is provided with opening, makes at least one conveyer belt connect described belt wheel and described motor through described opening.
Optionally, described opening is provided with two.
Optionally, the angle between described two opening axis is no more than 180 °.
Optionally, the degree of depth of described crushing chamber, crushing chamber is 50-90mm along the length of described airslide disintegrating mill axis direction.Concrete, can be 50-60mm or 60-70mm or 70-80mm or 80-90mm.
Optionally, described efferent duct is equal diameter pipe, and its internal diameter is 5-30mm.
Optionally, described negative pressure device is gas transport pump.Concrete, can be minipump or aspiration pump or gas circulator.
Optionally, described classification chamber internal diameter is 100-200mm.
Optionally, described crushing chamber is oval in the cross section of itself and air-flow admission passage junction, and this oval minor axis length is the more than 1 times of described air-flow admission passage internal diameter.Preferably, can be 1.2-3 times.
Optionally, described air-flow admission passage inwall comprises two sections of conical pipes, and these two sections of less one end of conical pipe interconnect, and forms Laval nozzle.
Optionally, in described air-flow admission passage, material admission passage is coaxially set, described feeding device adds material in crushing chamber to by described material admission passage.
Optionally, the outlet of described material admission passage is positioned at the throat of described Laval nozzle.
Optionally, described bearing is rolling bearing.It can be specifically deep groove ball bearing.
Optionally, on the second flange of described upper ball cover, caping and ring flange, corresponding position is provided with screwed hole, and three connects by threaded fastener.
Optionally, the wheel shaft of described classification part is connected by the interface cooperatively interacting with ring flange neck.
Optionally, between the interface cooperatively interacting described in, be provided with lubricating layer.Described lubricating layer can comprise lubricating oil or ball.
As can be seen from above, the small negative pressure airflow milling with ellipsoid structure crushing chamber provided by the invention, has less structure, is applicable to the occasion of a small amount of comminuting matters of needs such as laboratory; Simultaneously airflow milling provided by the present invention, has the axiolitic crushing chamber of part, in the situation that meeting air-flow material is pulverized, has further reduced the shared gross space of airflow milling, makes it more be applicable to the occasion of the small-sized airflow milling of needs such as laboratory.In addition, the airflow milling of the embodiment of the present invention, its grading wheel is provided with the inner chamber connecting with efferent duct, the classification part of grading wheel is arranged in classification chamber, and adopt the inner chamber of pipeline communication classification part and the efferent duct of material, thus the gas communication channel design integrated symmetric of airslide disintegrating mill, the circulation of gas and material is more stable, thereby the airslide disintegrating mill of the embodiment of the present invention has more stable duty, its service life is corresponding prolongation also.The embodiment of the present invention adopts negative pressure device, along the direction along gas and Flow of Goods and Materials in efferent duct, produces pressure, contribute to reach pulverize the material that requires in time from airslide disintegrating mill screening discharge.
Generally speaking, the small negative pressure airflow milling tool with ellipsoid structure crushing chamber that the present invention and embodiment provide has the following advantages:
First can meet the volume requirement of laboratory to airflow milling;
Secondly, it has axiolitic crushing chamber, and this crushing chamber and gas flow track adapt, and can in the situation that not affecting crushing effect, reduce the volume of crushing chamber;
The 3rd, its symmetrical configuration, avoids the gas flow that causes because structure is asymmetric unstable, makes the pulverized particles of output more even;
The 4th, the gas admission passage of its crushing chamber both sides extends to the elliptic focus position in ellipsoid cross section, and the material that a gas admission passage jet is accelerated just in time can export out at the gas admission passage of offside accelerated, has improved crush efficiency;
The 5th, its crushing chamber downside is also provided with gas admission passage, sends from top to bottom jet, can assist the material pushing after pulverizing to enter classification chamber;
The 6th, there is negative pressure device, contribute to the output of crushing rear material;
The 7th, there is the classification mechanism of special construction, the symmetric design of crushing chamber can be realized.
Accompanying drawing explanation
Fig. 1 is the airflow milling overall structure schematic diagram of the embodiment of the present invention;
Fig. 2 A is the airflow milling overall structure schematic diagram of another embodiment of the present invention;
Fig. 2 B is the airflow milling overall structure schematic diagram of the preferred embodiment of the present invention;
Fig. 3 is the airslide disintegrating mill schematic diagram of the embodiment of the present invention;
Fig. 4 A is embodiment of the present invention crushing chamber cross sectional representation;
Fig. 4 B is preferred embodiment of the present invention crushing chamber cross sectional representation;
Fig. 5 is the classification mechanism structural representation of the embodiment of the present invention;
Fig. 6 is the upper ball cover structural representation of the embodiment of the present invention;
Fig. 7 is the flange plate structure schematic diagram of the embodiment of the present invention;
Fig. 8 is the grading wheel structural representation of the embodiment of the present invention;
Fig. 9 is the structural representation in another orientation of ring flange of the embodiment of the present invention;
Figure 10 is the Laval nozzle schematic diagram of the embodiment of the present invention.
The specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 is the chamber small negative pressure airflow milling overall structure schematic diagram that ellipsoid structure is pulverized that has of the embodiment of the present invention.Comprise gathering-device 1, negative pressure device 2, feeding device 3, efferent duct 4, support 5, motor 6, controlling organization 7, bearing 8, airslide disintegrating mill 9.Gathering-device 1 is communicated with airslide disintegrating mill 9 by efferent duct 4.Feeding device 3 comprises at least one hopper, and this hopper is connected with the crushing chamber of airslide disintegrating mill 9 by pipeline, and described crushing chamber inside is provided with classification mechanism, and its bottom is connected with air inlet pipe.In support 5, be provided with band wheel mechanism, motor 6 connects described classification mechanism by described band wheel mechanism.Bearing 8 is for supporting whole airflow milling.7 pairs of motors 6 of controlling organization, airslide disintegrating mill 9 are controlled.
Material is by the hopper of described feeding device 3, through corresponding material admission passage, add in the crushing chamber of airslide disintegrating mill 9, under the control of controlling organization 7, the gas of Supersonic Flow enters in described crushing chamber described material is pulverized, and forms material powder.Motor 6 drives the classification mechanism in airslide disintegrating mill to carry out classification to described material powder by described in support 5 with wheel mechanism, by efferent duct 4, outputs in gathering-device 1.
Negative pressure device 2 is arranged on the receiving flask of gathering-device 1 lower end, and by electric wire, is connected between controlling organization 7, by controlling organization 7, is opened and closed and is provided power supply for it.Negative pressure device 2 plays swabbing action, makes in efferent duct 4, along the direction from airslide disintegrating mill 9 to gathering-device 1, produces suction, will in airslide disintegrating mill 9, through the material particles of pulverizing after also classification, suck in gathering-device 1.
Negative pressure device 2 is gas transport pump, can be specifically minipump, aspiration pump, gas circulator etc.In the present embodiment, steady and unimpeded in order to guarantee that material particles is carried, efferent duct 4 is equal diameter pipe, and its internal diameter is about 5-30mm.
In other embodiments, in order to guarantee the unimpeded of mass transport, the turning point of described efferent duct is set to circular-arc, as shown in Figure 2 A.In other embodiment, described efferent duct can be arc shape pipeline.Airslide disintegrating mill in the ordinary course of things bottom bilateral symmetry position is provided with two air-flow admission passages, as Fig. 2 A.In other embodiments of the invention, in crushing chamber lower central, an air-flow admission passage can be set, descend nozzle, send from bottom to top jet, as shown in Figure 2 B.
Fig. 3 is airslide disintegrating mill 9 structural representations of the embodiment of the present invention.This airslide disintegrating mill 9 comprises air-flow admission passage 91, crushing chamber 92, adapter cavity 93, classification chamber 94, has classification mechanism 95 parts to be arranged in classification chamber 94, and described efferent duct is connected and is communicated with described airslide disintegrating mill by this classification mechanism.Granular material to be pulverized enters the inner chamber of airslide disintegrating mill 9 from the feeding device 3 shown in Fig. 1, fall into crushing chamber 92, and jet flows into from air-flow admission passage 91, described granular material is clashed into mutually and then pulverize to form material powder.Material powder, under the impetus of described supersonic airstream and the negative pressure swabbing action of described negative pressure device, enters classification chamber 94 and carries out classification by grading plant.As shown in Figure 3, crushing chamber 92 shapes are roughly an axiolitic part, and air-flow admission passage 91 is arranged on crushing chamber 92 sidewalls, and symmetrical about crushing chamber 92 axis.Preferably, described ellipsoid refers to meet formula in cartesian coordinate system:
shape.In the present embodiment, the degree of depth of crushing chamber 92, crushing chamber 92 is 50-90mm along the length of the airslide disintegrating mill axis direction of the present embodiment, concrete, can be 50-60mm or 60-70mm or 70-80mm or 80-90mm.The degree of depth of adapter cavity 93, adapter cavity 93 along the length of the airslide disintegrating mill axis direction of the present embodiment be crushing chamber 92 1.5-2 doubly.The degree of depth in classification chamber 94, classification chamber along the length of the airslide disintegrating mill axis direction of the present embodiment be adapter cavity 93 length 0.7-1.6 doubly, thereby in the situation that not taking too much space, can the material of compound pulverizing standard is promptly separated in time.In the present embodiment, classification chamber 94 is cylindrical cavity, and its internal diameter is 100-200mm.
Fig. 4 A is the crushing chamber cross sectional representation of the embodiment of the present invention, i.e. A-A direction cutaway view.As shown in Figure 4, crushing chamber 92 is part ellipsoid shape, i.e. a part that is shaped as ellipsoid for crushing chamber 92, and its cross section is oval, air-flow admission passage is arranged at the major axis two ends of a cross section ellipse of crushing chamber; Preferably, described air-flow admission passage is arranged at crushing chamber middle part and is positioned at the transverse two ends of crushing chamber cross section.Preferably, described air-flow admission passage extends to crushing chamber inside, at the elliptic focus place of respective cross section.Because supersonic airstream sprays track and axiolitic crushing chamber adapts to more, thereby compared to existing technology, the part ellipsoid shape crushing chamber of the present embodiment can adapt to gas flow better, and described part ellipsoid shape mainly refers to shape ellipsoid cutting being obtained perpendicular to a certain axis of ellipsoid; In certain embodiments, described part ellipsoid shape can be semielliptical shape, 1/3rd ellipsoid shapes or 2/3rds ellipsoid shapes.The present embodiment adopts the axiolitic crushing chamber of part, has improved space availability ratio, makes crushing chamber 92 in the situation that of small volume, also can meet the demand of equipment to comminuting space; Cavity inner wall rounding off, be conducive to the circulation of powder and gas, thereby material is difficult for the dead angle acumulation at described crushing chamber simultaneously.
In certain embodiments, air-flow admission passage extends to crushing chamber is inner, to the elliptic focus place of corresponding crushing chamber cross section, as shown in Figure 4 B.Adopt this design, make the material particles speed difference of mutual shock in crushing chamber larger, thereby there is the crush efficiency of better crushing material effect and Geng Gao.
In the present embodiment, crushing chamber 92 is the more than 1 times of air-flow admission passage 91 internal diameters in the minor axis length of A-A section, preferably, described crushing chamber 92 the minor axis length of A-A section be air-flow admission passage 91 internal diameters 1.2-3 doubly.Crushing chamber 92 adopts this design, makes, in the situation that not affecting raw material pulverizing, to have reduced the overall dimensions of airslide disintegrating mill.
In the present embodiment, described adapter cavity connects described crushing chamber and described classification chamber, and its lower surface is ellipsoid, coordinates with the upper surface of described crushing chamber; Described adapter cavity upper surface is disc, coordinates with the lower end in described classification chamber.
In the present embodiment, described air-flow admission passage 91 Nell walls comprise two sections of conical pipes, and these two sections of less one end of conical pipe interconnect, one section of contraction, another section expansion, forms Laval nozzle, as shown in figure 10, make air-flow admission passage 91 first shrink afterwards and expand in air current flow direction.
In other embodiments, in described air-flow admission passage, material admission passage can be coaxially set, described feeding device adds material in crushing chamber to by described material admission passage.
In other embodiments, described crushing chamber bottom can arrange air-flow and enter lower nozzle, this lower nozzle provides a jet making progress, when pulverized material density is large and negative pressure device suction force is not enough, the supersonic gas that this lower nozzle sprays upwards pushes material, contribute to material to discharge through classification chamber, be collected device and collect.
Fig. 5 is classification mechanism 95 structural representations of the embodiment of the present invention.The classification mechanism of the present embodiment is turbine clasfficiator, and a part is arranged in classification chamber, and another part is arranged at outside described classification chamber; Comprise grading wheel 51, lower ball cover 52, outer sleeve 53, upper ball cover 54, caping 55, belt wheel 56, ring flange 57.Grading wheel 51 comprises interconnective wheel shaft and the classification part being connected with wheel shaft bottom, described wheel shaft is set in an outer sleeve 53 upward, is provided with two bearings, in the present embodiment between described wheel shaft and outer sleeve 53 inwalls, these two bearings are rolling bearing, can be specifically deep groove ball bearings.Described wheel shaft is the tubulose of hollow, and its internal diameter is not less than the internal diameter of foregoing efferent duct.Described classification part is cylindric, comprises the circular upper base that diameter is identical and goes to the bottom; A series of equally spaced blade shrouds, around described upper base and the periphery of going to the bottom, surround into the cavity of a cylinder with described upper base with going to the bottom; Described upper base middle part is provided with manhole, and this hole size and described wheel shaft internal diameter size adapt, make described wheel shaft by this through hole and described upper base, go to the bottom and cavity that a series of blade shroud is coiled into is communicated with.Speed because gas circulates in airslide disintegrating mill, connects the efferent duct of material in prior art from a side of crushing chamber, cause whole device stressed unstable, causes fluctuation of service, and whole airslide disintegrating mill easily damages simultaneously.And classification mechanism of the present invention adopts this design, make gas communication channel design integrated symmetric in airslide disintegrating mill, thereby gas and material stream passed are more stable, the life-span of airslide disintegrating mill is corresponding prolongation also.
Lower ball cover 52 is set on outer sleeve 53, contacts with described classification part.A upper ball cover 54 as shown in Figure 6; On the described wheel shaft of this upper ball cover 54 suit, by securing members such as bolts, be connected with described outer sleeve 53 sidewalls.Described two bearings are arranged at outer sleeve 53 two ends, inner side, and lower ball cover 52 and upper ball cover 54 are respectively used to block two described bearings.Upper ball cover 54 is as shown in Figure 6 provided with two sections of outstanding sidewalls in the one side of its connection outer sleeve 53, and the position of these two sidewalls is corresponding with inner ring and the position, outer ring of described bearing respectively under assembled state.Meanwhile, between described two bearings, be provided with bottom bracket axle, described bearing, bottom bracket axle are all set on the wheel shaft of described grading wheel 51, between described outer sleeve 53 inwalls and described wheel shaft outer wall.On upper ball cover 54, be disposed with caping 55 and belt wheel 56.In the present embodiment, the structure of ring flange 57 as shown in Figure 7, is hubbed clip-on-welding flange, comprises the first flange 571, neck 572 and the second flange 573.The first flange 571, the second flange 573 are separately positioned on neck 572 two ends.Neck 572 is stepped, and under assembled state, bottom internal diameter is greater than top internal diameter; The second flange 573 external diameters equate substantially with the external diameter of caping 55, are connected in the ladder bottom of neck 572; The first flange 571 is connected in the ladder top of neck 572.On the second flange 573, caping 55 edges, upper ball cover 54, corresponding position is provided with screwed hole, and three is threaded connection.The first flange 571 is connected with efferent duct or other output transition apparatus by the bindiny mechanism of sealing.In the present embodiment, on ring flange 57, be connected on the sidewall of the second flange 573 and offer two breach, conveyer belt is through described two breach, belt wheel 56 is connected with motor 6, motor 6 drives described belt wheel 56 to rotate by described conveyer belt, and then grading wheel 51 rotations, and the particle of upwards carrying from crushing chamber 92 is carried out to classification.The angle of described two breach axis is preferably and is no more than 180 °, from being connected with belt wheel, can be connected with adjacent component relatively securely again.
Grading wheel 51 is in the present embodiment by ring flange 57 and described efferent duct conducting, and grading wheel 51 is provided with ring flange 57 joints the joint cooperatively interacting, as shown in Figure 8, Figure 9.Fig. 8 is the schematic diagram of described another direction of grading wheel, has shown the interface structure that the present embodiment grading wheel 51 is connected with ring flange 57; On described wheel shaft, away from one end of described classification part, comprise two-layer connected sidewall, lateral wall is outstanding.Fig. 9 is the schematic diagram of described another direction of ring flange, and the neck sidewall being connected with described the first flange 571, along ring flange 57 axis directions, with interior extension, forms an interface matching with grading wheel 51 to neck; This interface comprises outstanding inwall 576 and outstanding lateral wall 574, is connected with the parietal layer 575 of indent between inner and outer wall.The outstanding lateral wall of described grading wheel 51 stretches into described ring flange 57 indent parietal layers 575, and the madial wall of described grading wheel 51 coordinates and contacts with described inwall 576 simultaneously.In airflow milling running due to the present embodiment, between grading wheel 51 and ring flange 57, can produce relative rotation, between the interface that therefore can cooperatively interact at grading wheel 51 and ring flange 57, lubricating layer is set, this lubricating layer can be lubricated wet goods.
As can be seen from above, the small negative pressure airflow milling with ellipsoid structure crushing chamber provided by the present invention, has less structure, is applicable to the occasion of a small amount of comminuting matters of needs such as laboratory; Simultaneously airflow milling provided by the present invention, has the axiolitic crushing chamber of part, in the situation that meeting air-flow material is pulverized, has further reduced the shared gross space of airflow milling.In addition, the airflow milling of the embodiment of the present invention, the classification part of grading wheel is arranged in classification chamber, and adopt the cavity of pipeline communication classification part and the efferent duct of material, thereby the gas communication channel design integrated symmetric of airslide disintegrating mill, the circulation of gas and material is more stable, thereby the airslide disintegrating mill of the embodiment of the present invention has more stable duty, and its service life is corresponding prolongation also.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a small negative pressure airflow milling with ellipsoid structure crushing chamber, comprises gathering-device, motor, controlling organization, efferent duct, feeding device, it is characterized in that, also comprises negative pressure device, airslide disintegrating mill; Described output device is communicated with described airslide disintegrating mill by described efferent duct; Described airslide disintegrating mill is provided with the axiolitic crushing chamber of part, and the transverse two ends of a cross section of described crushing chamber are provided with air-flow admission passage; Material adds in described airslide disintegrating mill by described feeding device; Motor is by connecting the classification mechanism of described airslide disintegrating mill with wheel mechanism; Described efferent duct is connected with the top of described airslide disintegrating mill; Described gathering-device is connected with described efferent duct; Under the control of described controlling organization, material adds in the crushing chamber of described airslide disintegrating mill by described feeding device, the air-flow flowing into from described air-flow admission passage is pulverized described material, described negative pressure device makes along material and gas circulating direction, to produce pressure in described efferent duct, makes the material after described pulverizing output to described gathering-device through described efferent duct.
2. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 1, is characterized in that, described airslide disintegrating mill also comprises the adapter cavity being connected with described crushing chamber and the classification chamber being connected with described adapter cavity; Described classification chamber is circular; The cross section that described adapter cavity is connected with described crushing chamber is for oval, and the cross section that described adapter cavity is connected with described classification chamber is for circular.
3. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 1, is characterized in that, also comprises classification mechanism, and described efferent duct is communicated with described airslide disintegrating mill by described classification mechanism;
And/or described crushing chamber bottom surface is provided with the lower nozzle that air-flow enters;
And/or described air-flow admission passage extends to crushing chamber is inner, to the elliptic focus place of respective cross section.
4. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 3, is characterized in that, described classification mechanism comprises grading wheel; Described grading wheel has the inner chamber being communicated with described efferent duct.
5. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 4, is characterized in that, described grading wheel comprises interconnective wheel shaft and the classification part being connected with wheel shaft bottom; Described wheel shaft is hollow tubular, stretches out outside described airslide disintegrating mill, by two bearings and a bottom bracket axle, is set in an outer sleeve; Described classification part comprises columniform inner chamber, is arranged in described airslide disintegrating mill; Described wheel shaft one end is communicated with described inner chamber, and the other end is communicated with described efferent duct.
6. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 5, is characterized in that, described classification part comprises that going to the bottom of circular upper base, circle and is blade; The circumference that described blade connects described upper base and goes to the bottom, surrounds into cylindrical cavity with described upper base with going to the bottom; Described upper base middle part is provided with manhole, and described wheel shaft is communicated with described cavity by this through hole.
7. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 5, is characterized in that, described classification mechanism also comprises lower ball cover, outer sleeve, upper ball cover, caping, belt wheel, ring flange; Described two bearings are arranged at respectively described outer sleeve two ends, and outer sleeve approaches one end of described classification part described in described lower ball cover shutoff, the outer sleeve other end described in described upper ball cover shutoff, and described bottom bracket axle is arranged between described two bearings; Described caping connects described upper ball cover, is connected with described ring flange flange simultaneously; Described belt wheel is fixed on described wheel shaft, drives described wheel shaft to rotate; Described ring flange is set in described wheel shaft.
8. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 7, is characterized in that, described ring flange is hubbed clip-on-welding flange, comprises the first flange, neck and the second flange; Described neck is stepped, and ladder bottom is greater than top internal diameter, and its location is connected with described the second flange, and its top is connected with described the first flange; The neck sidewall being connected with described the first flange interface outstanding along axis direction to neck interior and that match with described wheel shaft is connected with described wheel shaft; Belt wheel described in the neck side walls enclose that described the first flange connects, which is provided with opening, makes at least one conveyer belt connect described belt wheel and described motor through described opening.
9. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 8, is characterized in that, described opening is provided with two.
10. the small negative pressure airflow milling with ellipsoid structure crushing chamber according to claim 9, is characterized in that, the angle between described two opening axis is no more than 180 °.
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| CN103706449B (en) | 2015-09-02 |
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