CN106311440A - Airflow crushing unit - Google Patents
Airflow crushing unit Download PDFInfo
- Publication number
- CN106311440A CN106311440A CN201610776940.9A CN201610776940A CN106311440A CN 106311440 A CN106311440 A CN 106311440A CN 201610776940 A CN201610776940 A CN 201610776940A CN 106311440 A CN106311440 A CN 106311440A
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- China
- Prior art keywords
- air
- tapping channel
- impeller
- storehouse
- comminution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- B02C19/06—Jet mills
- B02C19/063—Jet mills of the toroidal type
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
Abstract
The invention discloses an airflow crushing unit. The airflow crushing unit is characterized in that the airflow crushing unit comprises a feeding mechanism, a crushing mechanism, a screening mechanism, a collecting mechanism and an auxiliary mechanism; the feeding mechanism comprises a feeding hopper and a screw feeder, a lower end discharge outlet of the feeding hopper is connected with a feed inlet of the screw feeder, and the screw feeder is horizontally arranged; a feeding transition bin is arranged between the feeding mechanism and the crushing mechanism, and the feeding transition bin is vertically arranged and comprises a first feed inlet and a first discharge outlet; the first feed inlet and the first discharge outlet are each provided with a first pneumatic butterfly valve, and a discharge outlet of the screw feeder is connected with the first feed inlet of the feeding transition bin. According to the airflow crushing unit, liquid nitrogen is used for directly cooling materials; therefore, the materials to be processed become brittle, elasticity is reduced, the brittle point is reached, and an ultrafine powder product is obtained.
Description
Technical field
The invention belongs to technology pulverizer technical field, particularly relate to a kind of comminution by gas stream unit.
Background technology
Carbon fiber is commonly used as reinforcing fiber, and carbon fibre reinforced composite is of many uses, have high intensity, high rigidity with
The characteristic of light weight, it is provided that high specific strength, specific rigidity, to increase the structural strength of opposing product, alleviates weight and promotes in fact
By property, compared with other reinforcing material, Young's modulus is more than 3 times of glass fibre, is about 2 times of aramid fiber；Carbon is fine at present
Dimension actually used during, 70% is above by the way of carbon fiber prepreg realizing, in order to give full play to carbon fiber
Superhigh intensity performance, is substantially all unidirectional fibre pre-needing to make carbon fiber only radial distribution, not having Zonal propagations
Leaching material, then by unidirectional fiber prepregs multi-angle paved in multi-layers, obtains carbon fibre composite through overcuring, possesses high hard
Degree, high intensity, the performance of low grammes per square metre.
The equipment that micropowder technology is used at present mostly is jet mill.Common jet mill is by certain particle size
Powder adds pulverizes chamber, and use air current spray nozzle is with superfast injection gas, thus causes the mutual shock between powder particle,
Powder is broken into thinner powder.The diameter Distribution obtaining superfines is required relatively low by prior art, and carbon fiber
The resin matrix that prepreg is conventional is powder, has the requirement of superelevation to the particle diameter of resin, and it is right not only to need on the basis of existing
Powder carries out degree of depth refinement, more requires the superfines obtained is carried out screening and separating effectively, and this is accomplished by us and provides one
Plant new comminution by gas stream unit.
Summary of the invention
For the problems referred to above, the invention provides a kind of comminution by gas stream unit, the unit uses ring pipe, by air current spray nozzle
It is distributed so that the powder in pulverizing chamber realizes degree of depth refinement, is provided with some air holes on tapping channel simultaneously, it is ensured that sieve
The high efficiency that choosing separates.
The present invention solves above-mentioned technical problem and be the technical scheme is that a kind of comminution by gas stream unit, it is characterised in that
Jet mill includes feeding mechanism, disintegrating mechanism, sorting mechanism, collecting mechanism and auxiliary body；
Described feeding mechanism includes loading hopper, screw feeder, the lower end discharging opening of loading hopper and entering of screw feeder
Material mouth is connected, and described screw feeder be arranged in parallel；
Described disintegrating mechanism includes pulverizing chamber, ring pipe, several air current spray nozzles, charging aperture II, and described ring pipe is provided with
Air inlet and several gas outlets, the air inlet of described ring pipe is connected with cooling driers by air inlet pipe, described ring pipe
Gas outlet annularly bore is uniformly distributed, and the gas outlet of described ring pipe is connected with air current spray nozzle one end by vertical tube, institute
State the air current spray nozzle other end and be positioned at pulverizing chamber；
Described sorting mechanism is positioned at above pulverizing chamber, and described sorting mechanism includes that screening room, impeller, motor and discharging leads to
Road, described impeller is positioned at screening indoor, and described profile ID is equal to tapping channel internal diameter, and described tapping channel is the pipeline of hollow
Structure, described tapping channel one end is positioned at screening indoor, and the other end is positioned at screening outdoor, sets between described tapping channel and impeller
Having gap, described tapping channel is provided with air inlet in one end that screening is outdoor, and described tapping channel is being provided with at impeller clearance
Several air holes, described air holes is evenly distributed on tapping channel on the end face of gap location.
As preferably, being provided with charging transitional storehouse between described feeding mechanism and disintegrating mechanism, described charging transitional storehouse hangs down
Straight setting, described charging transitional storehouse includes charging aperture I and discharging opening I, described charging aperture I and discharging opening I is equipped with pneumatic butterfly
Valve I, the discharging opening of described screw feeder is connected, between described discharging opening I and charging aperture II with the charging aperture I of charging transitional storehouse
Being connected by inclined tube, the angle between described inclined tube and pulverizing chamber is 20-40 °.
As preferably, described ring pipe is arranged around pulverizing chamber, and the air inlet of described ring pipe passes through flange and air inlet
Pipe is connected, and the air inlet of described ring pipe and the junction of air inlet pipe are provided with Pressure gauge and regulation wheel.
As preferably, described air current spray nozzle is Laval nozzle, and the internal diameter of described Laval nozzle is 4, described
Disintegrating mechanism fixes on the ground by supporting seat, and described air inlet pipe is fixed on support seat by support bar.
As preferably, described collecting mechanism includes cyclone separator and discharging transitional storehouse, and described tapping channel passes through
Pipe material is connected with cyclone separator, and described discharging transitional storehouse includes charging aperture IV and discharging opening IV, described cyclone separator
Discharging opening III be connected with the charging aperture IV of discharging transitional storehouse, described charging aperture IV and discharging opening IV are equipped with Pneumatic butterfly valve
II, the discharging opening IV of described discharging transitional storehouse connects collecting bag.
As preferably, described impeller includes blade and two support chips, and described impeller rotates under driven by motor, described
Impeller is titanium alloy impeller, described support chip a diameter of 140, is uniformly distributed 80-90 blade between two support chips, described
Support chip is connected with motor by flange, and the rotating speed of described motor is 12000 turns/min, and described blade encloses chamber, described
Chamber connects with tapping channel.
As preferably, described auxiliary body includes air compressor, filter I, cooling driers, filter II and gas storage
Tank；Described air compressor is permanent-magnetic variable-frequency double-screw air compressor, and described filter I is remove impurity filter, described filtration
Device II is oil removal filter.
As preferably, described loading hopper is sandwich wall type loading hopper, and described sandwich wall type loading hopper includes feeding chamber and pre-cooling
Storehouse, described pre-cooling storehouse connects nitrogen pot, is filled with liquid nitrogen, is provided with height between described pre-cooling storehouse and nitrogen pot in described nitrogen pot
Pressure valve.
As preferably, described charging transitional storehouse is provided with instillation storehouse, and one end, described instillation storehouse is connected with nitrogen pot, described
Being filled with liquid nitrogen in nitrogen pot, the described instillation storehouse other end stretches into inside charging transitional storehouse.
10, according to a kind of comminution by gas stream unit described in claim 1, it is characterised in that described sorting mechanism and the machine of collection
Being provided with secondary screen between structure selects mechanism, described secondary screen to select mechanism to include screening room II, impeller II, motor II and tapping channel
II, described impeller II includes 60 blades.
It is an advantage of the current invention that:
1, the unit uses ring pipe, is uniformly distributed by air current spray nozzle on ring pipe, and several air current spray nozzles are same
Time work so that the powder in pulverizing chamber realize the degree of depth refinement.
2, being provided with several air holes on the tapping channel of sorting mechanism, gases at high pressure are flowed out by air holes and are filled with discharging
Gap between passage and impeller, has blocked the flowing of the inside and outside powder of tapping channel.
3, the unit uses liquid nitrogen, and cost is relatively low, requires relatively low to the sealing condition of unit, and more directly
Achieve the embrittlement of material to be processed.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure chart of the embodiment of the present invention 1.
Fig. 2 is disintegrating mechanism structural representation.
Fig. 3 is sorting mechanism structural representation.
Fig. 4 is tapping channel structural representation.
Fig. 5 is auxiliary body's connection diagram.
Fig. 6 is the structural representation of embodiment 2.
Wherein: 1, loading hopper 2, screw feeder 3, charging transitional storehouse 4, Pneumatic butterfly valve I
5, pulverizing chamber 6, ring pipe 7, air current spray nozzle 8, support seat
9, inclined tube 10, air inlet 11, air inlet pipe 12, cooling driers
13, Pressure gauge 14, regulation wheel 15, vertical tube, 16, air accumulator
17, screening room 18, motor 19, tapping channel 20, air holes
21, blade 22, support chip 23, secondary screen select mechanism 24, cyclone separator
25, discharging transitional storehouse 26, discharge pipe 27, Pneumatic butterfly valve II 28, collecting bag
29, air compressor 30, filter I 31, filter II 32, feeding chamber
33, pre-cooling storehouse 34, nitrogen pot 35, high pressure valve 36, gap
37, air inlet
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
Embodiment 1:
A kind of comminution by gas stream unit, including feeding mechanism, disintegrating mechanism, sorting mechanism, collecting mechanism and auxiliary body.
Described feeding mechanism includes loading hopper 1, screw feeder 2, the lower end discharging opening of loading hopper 1 and screw feeder 2
Charging aperture be connected, described screw feeder 2 be arranged in parallel.
Being provided with charging transitional storehouse 3 between described feeding mechanism and disintegrating mechanism, described charging transitional storehouse is vertically arranged, described
Charging transitional storehouse includes charging aperture I and discharging opening I, and described charging aperture I and discharging opening I are equipped with Pneumatic butterfly valve I 4, described spiral shell
The discharging opening of rotation feeder is connected with the charging aperture I of charging transitional storehouse.
Described disintegrating mechanism includes pulverizing chamber 5, ring pipe 6, four air current spray nozzles 7, charging apertures II, and described disintegrating mechanism leads to
Cross support seat 8 to fix on the ground, connected by inclined tube 9 between described discharging opening I and charging aperture II, described inclined tube 9 and pulverizing
Angle between room 5 is 20-40 °, and described ring pipe 6 is arranged around pulverizing chamber 5, and described ring pipe 6 is provided with air inlet 10 and four
Individual gas outlet, the air inlet 10 of described ring pipe 6 is connected with cooling driers 12 by air inlet pipe 11, and described air inlet pipe 11 is by propping up
Strut is fixed on support seat 8, and the air inlet 10 of described ring pipe 6 is connected with air inlet pipe 11 by flange, described ring pipe 6
The junction of air inlet and air inlet pipe 11 be provided with Pressure gauge 13 and regulate wheel 14, the gas outlet of described ring pipe 6 is at ring pipe 6
On be uniformly distributed, the gas outlet of described ring pipe 6 is connected with air current spray nozzle one end by vertical tube 15, described air current spray nozzle another
End stretches in pulverizing chamber 5, and described air current spray nozzle is Laval nozzle, and the internal diameter of described Laval nozzle is 4, high velocity air
Being entered inside pulverizing chamber by Laval nozzle, the gas temperature of ejection is at about 10 DEG C, and gases at high pressure are in instantaneous expansion meeting
Heat absorption, can reduce the thing under the temperature within pulverizing chamber, low temperature environment to a certain extent hence into the gas within pulverizing chamber
Material meeting is brittle, lack elasticity, reaches the purpose easily pulverized.
Described sorting mechanism is positioned at above pulverizing chamber 5, and described sorting mechanism includes screening room 17, impeller, motor 18 and going out
Material passage 19, described impeller is positioned at screening room 17, and described impeller rotates under motor 18 drives, and described impeller diameter is equal to out
Material passage 19 diameter, described tapping channel 19 is the pipeline configuration of hollow, and described tapping channel 19 one end is positioned at screening room 17,
The other end is positioned at outside screening room 17, is provided with gap 36 between described tapping channel and impeller, and described tapping channel is in screening outdoor
One end be provided with air inlet 37, described tapping channel 19 is being provided with several air holes 20, described air holes at the gap 36 of impeller
20 are evenly distributed on the tapping channel 19 end face at gap 36.
Described impeller includes blade 21 and two support chips 22, and described impeller is titanium alloy impeller, and described support chip 22 is straight
Footpath is 140, is uniformly distributed 80-90 blade 21 between two support chips 22, and described support chip 22 is by flange and motor 18
Being connected, the rotating speed of described motor 18 is 12000 turns/mi n, and described blade 21 encloses chamber, described chamber and tapping channel 19
Connection, the superfine-material after pulverizing, with air motion to screening indoor, produces in the rotation of impeller less than the material of screening diameter
Under raw centrifugal action, enter in the chamber that blade encloses with air-flow, then be flowed into next program by tapping channel, greatly
Material in screening diameter is got rid of the inwall to screening room by impeller, naturally drops to the pulverizing chamber of lower section.
Being provided with secondary screen between described sorting mechanism and collecting mechanism selects mechanism 23, described secondary screen to select mechanism to include screening
Room II, impeller II, motor II and tapping channel II, described impeller II includes 60 blades, and secondary screen selects structure and the sieve of mechanism
The structure selecting mechanism is identical, and difference is that secondary screen selects mechanism to include 60 blades, and secondary screen selects mechanism to achieve crushed thing
The again profound screening of material, it is ensured that the superfine-material diameter Distribution scope filtered out is less, Ke She bis-road according to actual needs
Sorting mechanism, it is also possible to do not set secondary screen and select mechanism.
Described collecting mechanism includes that cyclone separator 24 and discharging transitional storehouse 25, described tapping channel 19 pass through discharge pipe
26 are connected with cyclone separator 24, and described discharging transitional storehouse 25 includes charging aperture IV and discharging opening IV, described cyclone separator
Discharging opening III be connected with the charging aperture IV of discharging transitional storehouse, described charging aperture IV and discharging opening IV are equipped with Pneumatic butterfly valve
II 27, the discharging opening IV of described discharging transitional storehouse connects collecting bag 28, is provided with Pneumatic knocking hammer in described discharging transitional storehouse 25.
Described auxiliary body includes air compressor 29, filter I 30, cooling driers 12, filter II 31 and air accumulator 16,
Described air compressor 29 is permanent-magnetic variable-frequency double-screw air compressor, and described filter I 30 is remove impurity filter, described filtration
Device II 31 is oil removal filter.
The using method of the comminution by gas stream unit of the present embodiment is as follows:
(1) material to be processed is placed in loading hopper, enters charging transition by charging aperture I under the effect of screw feeder
Storehouse, is entering inclined tube by discharging opening I, is dropping in pulverizing chamber, and wherein, charging aperture I and discharging opening I are in the control of Pneumatic butterfly valve I
Under system, when charging aperture I is opened, discharging opening I is closed, and when charging aperture I is closed, discharging opening I is in opening,
Thus cause enter pulverizing chamber material to be processed be one one enter；
(2) having angle between inclined tube and pulverizing chamber, material to be processed drops in pulverizing chamber in the case of having acceleration, high
Pressure air accelerates to form ultrahigh speed air-flow through air current spray nozzle, and ultrahigh speed air-flow injects pulverizing chamber, and material to be processed is by high velocity air
Accelerate, fierce collision occurs, it is achieved the superfine grinding of material between material to be processed；
(3) pulverized material is with air motion to screening room, and impeller selection goes out the product that particle diameter is qualified, qualified product
With air-flow through cyclone collection, with after enter collecting bag through discharging transitional storehouse, the underproof material of particle diameter cannot be introduced into
Blade encloses in the chamber of formation, returns again to the particle diameter that pulverizing chamber continues to be crushed to require.
The formation of the present embodiment mesohigh gas is as follows:
Air, after permanent-magnetic variable-frequency twin screw high-efficiency air compressor compresses, sequentially passes through remove impurity filter and cooling driers,
Obtaining 6 grades of dry airs of aqueous ＜ 3ppm, dry air is again through oil removal filter, and the high pressure obtaining oil-containing ＜ 1ppm is empty
Gas, enters back into air accumulator, then pulverizes unit by air accumulator supply.
The flow direction of the present embodiment mesohigh gas is as follows:
Gases at high pressure out from air accumulator, are divided into three branch roads, are disintegrating mechanism branch road, sorting mechanism branch road respectively
Mechanism's branch road is selected with secondary screen；
(1) gases at high pressure of disintegrating mechanism branch road are introduced into circulating line, then respectively enter 4 Laval nozzles, through drawing
Wa Er nozzle accelerates to form ultrahigh speed air-flow, and ultrahigh speed air-flow injects pulverizing chamber, and 4 or multiple air current spray nozzle are at ring pipe simultaneously
On divide equally distribution, and work so that the powder in pulverizing chamber realizes degree of depth refinement simultaneously；
(2) sorting mechanism branch road selects the gases at high pressure circulation direction of mechanism's branch road to be consistent with secondary screen, gases at high pressure
By the air inlet on tapping channel, enter in the annular air channel in tapping channel tube wall, enter back in tapping channel tube wall
In cylindrical air streams, cylindrical air streams is paralleled with the centrage of tapping channel, and divides equally distribution, therefore high pressure gas in the pipe wall
Body exits into gap by air inlet-annular air channel-cylindrical air streams, and gases at high pressure are filled with between tapping channel and impeller
Gap, in the case of the rotation ensureing impeller is not affected by tapping channel so that the chamber that blade encloses and discharging are led to
Road defines the pipeline of connection, screened after material powders will not return to screening indoor from gap, the most screened
Material powders also will not be entered in tapping channel by gap.
Embodiment 2:
Only carrying out collision crashing in high velocity air, the powder diameter obtained is limited, now with being made by liquid nitrogen etc.
Cryogen will carry out the comminuting method that freezes pulverized after crushed material embrittlement, patent documentation CN200410014235 discloses a kind of lazy
Property gas shield micro jet group, pulverizing unit in this patent is to use totally enclosed type, common by source of the gas part
Air becomes nitrogen (noble gas), and nitrogen is also constantly in pipeline and the container of closing, and nitrogen is also required to protect again simultaneously
Could flow under temperature environment, the airtight condition of equipment is required higher by this, relatively costly, when nitrogen leaks, and operator
The danger easily suffocated.Patent documentation CN2014208596973 discloses a kind of cryotherapy formula air flow crushing device, at this dress
In putting, by normal air source of the gas under the effect of high pressure liquid nitrogen, be rapidly cooled to subzero 100 DEG C of subzero 170-, allow injection
High velocity air temperature reduces rapidly, and material to be processed, under low-temperature airflow effect, arrives rapidly low temperature brittleness, and shortcoming is low temperature
Can not act directly on material to be processed, the conduction of temperature requires time for, it is impossible to ensure that the abundant low temperature being applied material is crisp
Change.
In order to realize the low temperature brittleness of material to be processed, we treat processing materials and add two step K cryogenic treatment, and first
Step is that the loading hopper of embodiment 1 is changed into sandwich wall type loading hopper, and described sandwich wall type loading hopper includes feeding chamber 32 and pre-cooling storehouse
33, described pre-cooling storehouse 33 connects nitrogen pot 34, is filled with liquid nitrogen, described pre-cooling storehouse 33 and nitrogen pot 34 in described nitrogen pot 34
Between be provided with high pressure valve 35.
Second step is to be provided with instillation storehouse 36 on described charging transitional storehouse, one end, described instillation storehouse 36 and nitrogen pot 34 phase
Even, being filled with liquid nitrogen in described nitrogen pot 34, described instillation storehouse 36 other end stretches into inside charging transitional storehouse, and liquid nitrogen is by instiling
Storehouse is directly instiled on the material to be processed of charging transitional storehouse, and instillation storehouse to the speed of the internal instillation liquid nitrogen of charging transitional storehouse is
20-60mL/min so that material to be processed is frozen again, it is ensured that the abundant freezing of material to be processed, from charging transitional storehouse
Temperature of charge out can reach-150 170 DEG C.
The using method of the comminution by gas stream unit of the present embodiment is as follows:
(1) in material to be processed is placed in sandwich wall type loading hopper, being filled with liquid nitrogen in pre-cooling storehouse, material to be processed is at feeding chamber
Interior by the most freezing so that the temperature of material to be processed is reduced to-120 130 DEG C, and the material to be processed of low temperature is at screw feeding
Enter charging transitional storehouse by charging aperture I under the effect of device, then enter inclined tube by discharging opening I, drop in pulverizing chamber, its
In, charging aperture I and discharging opening I are under the control of Pneumatic butterfly valve I, and when charging aperture I is opened, discharging opening I is closed, when
When charging aperture I is closed, discharging opening I is in opening, thus cause the material to be processed entering pulverizing chamber be one one enter
Enter, material to be processed in charging transitional storehouse by the contact refrigeration again of the liquid nitrogen in instillation storehouse, from charging transitional storehouse out
Temperature of charge can reach-150 170 DEG C；
(2) having angle between inclined tube and pulverizing chamber, the material to be processed of low temperature drops at powder in the case of having acceleration
Broken room, pressure-air accelerates to form ultrahigh speed air-flow through air current spray nozzle, and ultrahigh speed air-flow injects pulverizing chamber, and material to be processed is high
Speed air-flow accelerates, and fierce collision occurs, it is achieved the superfine grinding of material between material to be processed；
(3) pulverized material is with air motion to screening room, and impeller selection goes out the product that particle diameter is qualified, qualified product
With air-flow through cyclone collection, with after enter collecting bag through discharging transitional storehouse, the underproof material of particle diameter cannot be introduced into
Blade encloses in the chamber of formation, returns again to the particle diameter that pulverizing chamber continues to be crushed to require.
Embodiment 3
Annular air channel and several cylindrical air streams, described air inlet and annular air channel it is provided with in the tube wall of tapping channel
Being connected, described annular air channel is positioned at the tube wall of tapping channel, and described annular air channel is perpendicular with the centrage of tapping channel,
Described annular air channel connects has some cylindrical air streams, described cylindrical air streams one end to be connected with annular air channel, and the other end prolongs
Extend gap location formed air holes, described cylindrical air streams is uniformly distributed in the tube wall of tapping channel, described cylindrical air streams with
The centrage of tapping channel is parallel.
The flow direction of the present embodiment mesohigh gas is as follows:
Gases at high pressure out from air accumulator, are divided into three branch roads, are disintegrating mechanism branch road, sorting mechanism branch road respectively
Mechanism's branch road is selected with secondary screen；
(1) gases at high pressure of disintegrating mechanism branch road are introduced into circulating line, then respectively enter 4 Laval nozzles, through drawing
Wa Er nozzle accelerates to form ultrahigh speed air-flow, and ultrahigh speed air-flow injects pulverizing chamber, and 4 or multiple air current spray nozzle are at ring pipe simultaneously
On divide equally distribution, and work so that the powder in pulverizing chamber realizes degree of depth refinement simultaneously；
(2) sorting mechanism branch road selects the gases at high pressure circulation direction of mechanism's branch road to be consistent with secondary screen, gases at high pressure
By the air inlet on tapping channel, enter in the annular air channel in tapping channel tube wall, enter back in tapping channel tube wall
In cylindrical air streams, cylindrical air streams is paralleled with the centrage of tapping channel, and divides equally distribution, therefore high pressure gas in the pipe wall
Body exits into gap by air inlet-annular air channel-cylindrical air streams, and gases at high pressure are filled with between tapping channel and impeller
Gap, in the case of the rotation ensureing impeller is not affected by tapping channel so that the chamber that blade encloses and discharging are led to
Road defines the pipeline of connection, screened after material powders will not return to screening indoor from gap, the most screened
Material powders also will not be entered in tapping channel by gap.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a comminution by gas stream unit, it is characterised in that jet mill includes feeding mechanism, disintegrating mechanism, sorting mechanism, receipts
Collecting mechanism and auxiliary body；
Described feeding mechanism includes loading hopper, screw feeder, the lower end discharging opening of loading hopper and the charging aperture of screw feeder
Being connected, described screw feeder be arranged in parallel；
Described disintegrating mechanism includes pulverizing chamber, ring pipe, several air current spray nozzles, charging aperture II, and described ring pipe is provided with air inlet
Mouth and several gas outlets, the air inlet of described ring pipe is connected with cooling driers by air inlet pipe, giving vent to anger of described ring pipe
Opening's edge ring pipe internal diameter is uniformly distributed, and the gas outlet of described ring pipe is connected with air current spray nozzle one end by vertical tube, described gas
The flow nozzle other end is positioned at pulverizing chamber；
Described sorting mechanism is positioned at above pulverizing chamber, and described sorting mechanism includes screening room, impeller, motor and tapping channel, institute
Stating impeller and be positioned at screening indoor, described profile ID is equal to tapping channel internal diameter, and described tapping channel is the pipeline configuration of hollow,
Described tapping channel one end is positioned at screening indoor, and the other end is positioned at screening outdoor, between being provided with between described tapping channel and impeller
Gap, described tapping channel is provided with air inlet in one end that screening is outdoor, described tapping channel with impeller clearance at be provided with some
Individual air holes, described air holes is evenly distributed on tapping channel on the end face of gap location.
A kind of comminution by gas stream unit the most according to claim 1, it is characterised in that described feeding mechanism and disintegrating mechanism it
Between be provided with charging transitional storehouse, described charging transitional storehouse is vertically arranged, and described charging transitional storehouse includes charging aperture I and discharging opening I, institute
State and on charging aperture I and discharging opening I, be equipped with Pneumatic butterfly valve I, the discharging opening of described screw feeder and the charging feeding transitional storehouse
Mouth I is connected, and described discharging opening I is connected by inclined tube between charging aperture II, and the angle between described inclined tube and pulverizing chamber is 20-
40°。
A kind of comminution by gas stream unit the most according to claim 1, it is characterised in that described ring pipe sets around pulverizing chamber
Putting, the air inlet of described ring pipe is connected with air inlet pipe by flange, the air inlet of described ring pipe and the connection of air inlet pipe
Place is provided with Pressure gauge and regulation wheel.
A kind of comminution by gas stream unit the most according to claim 1, it is characterised in that described air current spray nozzle is Lavalle spray
Mouth, the internal diameter of described Laval nozzle is 4, and described disintegrating mechanism fixes on the ground by supporting seat, and described air inlet pipe is led to
Cross support bar to be fixed on support seat.
5. according to a kind of comminution by gas stream unit described in claim 1, it is characterised in that described collecting mechanism includes cyclone separator
With discharging transitional storehouse, described tapping channel is connected with cyclone separator by discharge pipe, described discharging transitional storehouse include into
Material mouth IV and discharging opening IV, the discharging opening III of described cyclone separator is connected with the charging aperture IV of discharging transitional storehouse, described in enter
Being equipped with Pneumatic butterfly valve II on material mouth IV and discharging opening IV, the discharging opening IV of described discharging transitional storehouse connects collecting bag.
6. according to a kind of comminution by gas stream unit described in claim 1, it is characterised in that described impeller includes blade and two supports
Sheet, described impeller rotates under driven by motor, and described impeller is titanium alloy impeller, described support chip a diameter of 140, two
Being uniformly distributed 80-90 blade between blade, described support chip is connected with motor by flange, and the rotating speed of described motor is
12000 turns/mi n, described blade encloses chamber, and described chamber connects with tapping channel.
7. according to a kind of comminution by gas stream unit described in claim 1, it is characterised in that described auxiliary body includes that air compresses
Machine, filter I, cooling driers, filter II and air accumulator；Described air compressor is permanent-magnetic variable-frequency double-screw air compressor,
Described filter I is remove impurity filter, and described filter II is oil removal filter.
8. according to a kind of comminution by gas stream unit described in claim 1, it is characterised in that described loading hopper is sandwich wall type loading hopper,
Described sandwich wall type loading hopper includes feeding chamber and pre-cooling storehouse, and described pre-cooling storehouse connects nitrogen pot, is filled with in described nitrogen pot
Liquid nitrogen, is provided with high pressure valve between described pre-cooling storehouse and nitrogen pot.
9. according to a kind of comminution by gas stream unit described in claim 1, it is characterised in that described charging transitional storehouse is provided with instillation
Storehouse, one end, described instillation storehouse is connected with nitrogen pot, is filled with liquid nitrogen in described nitrogen pot, and the described instillation storehouse other end stretches into charging
Inside transitional storehouse.
10. according to a kind of comminution by gas stream unit described in claim 1, it is characterised in that described sorting mechanism and collecting mechanism it
Between be provided with secondary screen and select mechanism, described secondary screen to select mechanism to include screening room II, impeller II, motor II and tapping channel II, institute
State impeller II and include 60 blades.
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| CN108816453A (en) * | 2018-04-27 | 2018-11-16 | 苏州威斯东山电子技术有限公司 | A kind of electromagnetic shielding crushing processor and its technique of magnetic material |
| CN109201299A (en) * | 2018-08-26 | 2019-01-15 | 南京理工大学 | A kind of preparation facilities of special type superfine powder |
| CN109433381A (en) * | 2018-12-18 | 2019-03-08 | 潍坊正远粉体工程设备有限公司 | Superheated steam air-flow crushing production line |
| CN109433402A (en) * | 2018-12-28 | 2019-03-08 | 江阴市天悦粉体科技有限公司 | A kind of cooling continuous flow rate mechanism of powder |
| CN109622175A (en) * | 2018-11-28 | 2019-04-16 | 上海化工研究院有限公司 | A kind of powder classifying system |
| CN109731657A (en) * | 2019-02-20 | 2019-05-10 | 昆山强威粉体设备有限公司 | Gas ring device applied to fluidized bed opposed jet mill machine |
| CN112385480A (en) * | 2020-10-21 | 2021-02-23 | 龙泉市菇友自动化设备有限公司 | Centralized treatment system for strain inoculation and centralized treatment method for strain inoculation |
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| CN116393480B (en) * | 2023-03-13 | 2023-09-29 | 扬州阿特兰新材料有限公司 | High performance is incomplete cloth recovery breaker for non-woven fabrics |
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