CN106311440B - A kind of air-flow crushing unit - Google Patents

A kind of air-flow crushing unit Download PDF

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Publication number
CN106311440B
CN106311440B CN201610776940.9A CN201610776940A CN106311440B CN 106311440 B CN106311440 B CN 106311440B CN 201610776940 A CN201610776940 A CN 201610776940A CN 106311440 B CN106311440 B CN 106311440B
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China
Prior art keywords
air
discharge port
tapping channel
storehouse
impeller
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CN201610776940.9A
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CN106311440A (en
Inventor
周易
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High tech material (Tianjin) Co., Ltd.
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周易
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00Disintegrating plant with or without drying of the material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00Other disintegrating devices or methods
    • B02C19/06Jet mills
    • B02C19/063Jet mills of the toroidal type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary 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
    • B02C23/02Feeding devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary 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
    • B02C23/18Adding fluid, other than for crushing or disintegrating by fluid energy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B7/00Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083Selective 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 a kind of air-flow crushing units, which is characterized in that airslide disintegrating mill includes feeding mechanism, disintegrating mechanism, sorting mechanism, collecting mechanism and auxiliary body;The feeding mechanism includes loading hopper, screw feeder, the lower end discharge port of loading hopper is connected with the feed inlet of screw feeder, the screw feeder is arranged in parallel, charging transitional storehouse is equipped between the feeding mechanism and disintegrating mechanism, the charging transitional storehouse is vertically arranged, the charging transitional storehouse includes feed inlet I and discharge port I, Pneumatic butterfly valve I is equipped on the feed inlet I and discharge port I, the discharge port of the screw feeder is connected with the feed inlet I of charging transitional storehouse, the unit uses liquid nitrogen directly to freeze material, the elasticity so that material to be processed becomes fragile and reduces, reach brittle point, obtain ultra-fine powder-product.

Description

A kind of air-flow crushing unit
Technical field
The invention belongs to technology pulverizer technical field more particularly to a kind of air-flow crushing units.
Background technique
Carbon fiber is commonly used as reinforcing fiber, and carbon fibre reinforced composite is widely used, have high-intensitive, high rigidity with The characteristic of light weight provides high specific strength, than rigidity, to increase the structural strength of opposing product, mitigates weight and promoted in fact With property, compared with other reinforcing materials, Young's modulus is 3 times of glass fibre or more, is 2 times of aramid fiber or so;Carbon fiber at present In actual use, 70% or more is realized by way of carbon fiber prepreg to dimension, in order to give full play to carbon fiber Superhigh intensity performance, be substantially all need for carbon fiber to be made into only radial distribution, the unidirectional fibre of Zonal propagations is not pre- Leaching material, then by unidirectional fiber prepregs multi-angle paved in multi-layers, obtains carbon fibre composite by solidification, has high hard The performance of degree, high-intensitive, low grammes per square metre.
The equipment that superfine powder technology is used at present is mostly airslide disintegrating mill.Common airslide disintegrating mill is by certain particle size Powder, which is added, crushes chamber, using air current spray nozzle with superfast injection gas, so as to cause the mutual shock between powder particle, Powder is ground into thinner powder.It is lower to the diameter Spreading requirements for obtaining superfines in the prior art, and carbon fiber The common resin matrix of prepreg be it is powdered, have the requirement of superelevation to the partial size of resin, it is right on the basis of existing not only to need Powder carries out depth refinement, more requires to carry out obtained superfines effectively screening separation, this just needs us to provide one The new air-flow crushing unit of kind.
Summary of the invention
In view of the above-mentioned problems, the unit uses ring pipe, by air current spray nozzle the present invention provides a kind of air-flow crushing unit It is distributed, so that crushing indoor powder realizes depth refinement, while being equipped with several air holes on tapping channel, ensure that sieve Select isolated high efficiency.
The technical proposal adopted by the invention to solve the above technical problems is that: a kind of air-flow crushing unit, which is characterized in that Airslide disintegrating mill includes feeding mechanism, disintegrating mechanism, sorting mechanism, collecting mechanism and auxiliary body;
The feeding mechanism includes loading hopper, screw feeder, the lower end discharge port of loading hopper and screw feeder into Material mouth is connected, and the screw feeder is arranged in parallel;
The disintegrating mechanism includes pulverizing chamber, ring pipe, several air current spray nozzles, feed inlet II, and the ring pipe is equipped with Air inlet and several gas outlets, the air inlet of the ring pipe are connected by air inlet pipe with cooling driers, the ring pipe Gas outlet is uniformly distributed along annular bore, and the gas outlet of the ring pipe is connected by vertical tube with air current spray nozzle one end, institute The air current spray nozzle other end is stated to be located in pulverizing chamber;
The sorting mechanism is located above pulverizing chamber, and the sorting mechanism includes that screening room, impeller, motor and discharging are logical Road, the impeller are located at screening interior, and the profile ID is equal to tapping channel internal diameter, and the tapping channel is hollow pipeline Structure, described tapping channel one end are located at screening interior, and the other end is outdoor positioned at screening, sets between the tapping channel and impeller Have a gap, the tapping channel is equipped with air inlet in the outdoor one end of screening, the tapping channel with impeller clearance at be equipped with Several air holes, the air holes are evenly distributed on tapping channel on the end face of gap location.
Preferably, being equipped with charging transitional storehouse between the feeding mechanism and disintegrating mechanism, the charging transitional storehouse hangs down Straight setting, the charging transitional storehouse includes feed inlet I and discharge port I, is equipped with pneumatic butterfly on the feed inlet I and discharge port I The discharge port of valve I, the screw feeder is connected with the feed inlet I of charging transitional storehouse, between the discharge port I and feed inlet II It is connected to by inclined tube, the angle between the inclined tube and pulverizing chamber is 20-40 °.
Preferably, the ring pipe is arranged around pulverizing chamber, the air inlet of the ring pipe passes through flange and air inlet Pipe is connected, and the air inlet of the ring pipe and the junction of air inlet pipe are equipped with pressure gauge and regulating wheel.
Preferably, the air current spray nozzle is Laval nozzle, the internal diameter of the Laval nozzle is 4 ㎜, described Disintegrating mechanism is fixed on the ground by support base, and the air inlet pipe is fixed on support base by support rod.
Preferably, the collecting mechanism includes cyclone separator and discharging transitional storehouse, the tapping channel is by going out Pipe material is connected with cyclone separator, and the discharging transitional storehouse includes feed inlet IV and discharge port IV, the cyclone separator Discharge port III with discharging transitional storehouse feed inlet IV be connected, be equipped with Pneumatic butterfly valve on the feed inlet IV and discharge port IV II, the discharge port IV of the discharging transitional storehouse is connected with collecting bag.
Preferably, the impeller includes blade and two support chips, the impeller rotates under motor drive, described Impeller is titanium alloy impeller, and the support chip diameter is 140 ㎜, is uniformly distributed 80-90 blade between two support chips, described Support chip is connected to the motor by flange, and the revolving speed of the motor is 12000 turns/min, and the blade encloses chamber, described Chamber is connected to tapping channel.
Preferably, the auxiliary body includes air compressor, filter I, cooling driers, filter II and gas storage Tank;The air compressor is permanent-magnetic variable-frequency double-screw air compressor, and the filter I is removal filtration device, the filtering Device II is oil removal filter.
Preferably, the loading hopper is sandwich wall type loading hopper, the sandwich wall type loading hopper includes feeding chamber and pre-cooling Storehouse, the pre-cooling storehouse are connected with nitrogen gas tank, and liquid nitrogen is filled in the nitrogen gas tank, and height is equipped between pre-cooling storehouse and the nitrogen gas tank Pressure valve.
Preferably, the charging transitional storehouse is equipped with instillation storehouse, instillation storehouse one end is connected with nitrogen gas tank, described Liquid nitrogen is filled in nitrogen gas tank, the instillation storehouse other end protrudes into inside charging transitional storehouse.
Preferably, being equipped with secondary screen between the sorting mechanism and collecting mechanism selects mechanism, the secondary screen selects machine Structure includes screening room II, impeller II, motor II and tapping channel II, and the impeller II includes 60 blades.
The present invention has the advantages that
1, the unit uses ring pipe, air current spray nozzle is uniformly distributed on ring pipe, several air current spray nozzles are same When work so that crushing indoor powder realizes depth refinement.
2, several air holes are provided on the tapping channel of sorting mechanism, high pressure gas is filled with discharging by air holes outflow Gap between channel 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, lower to the sealing condition requirement of unit, and more directly Realize the embrittlement of material to be processed.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structure chart of the embodiment of the present invention 1.
Fig. 2 is disintegrating mechanism structural schematic diagram.
Fig. 3 is sorting mechanism structural schematic diagram.
Fig. 4 is tapping channel structural schematic diagram.
Fig. 5 is auxiliary body's connection schematic diagram.
Fig. 6 is the structural schematic diagram 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 base
9, inclined tube 10, air inlet 11, air inlet pipe 12, cooling driers
13, pressure gauge 14, regulating wheel 15, vertical tube, 16, air accumulator
17, room 18, motor 19, tapping channel 20, air holes are screened
21, blade 22, support chip 23, secondary screen select mechanism 24, cyclone separator
25, discharge 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, storehouse 34, nitrogen gas tank 35, high pressure valve 36, gap is pre-chilled
37, air inlet
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Embodiment 1:
A kind of air-flow crushing unit, including feeding mechanism, disintegrating mechanism, sorting mechanism, collecting mechanism and auxiliary body.
The feeding mechanism includes loading hopper 1, screw feeder 2, the lower end discharge port and screw feeder 2 of loading hopper 1 Feed inlet be connected, the screw feeder 2 is arranged in parallel.
Charging transitional storehouse 3 is equipped between the feeding mechanism and disintegrating mechanism, the charging transitional storehouse is vertically arranged, described Feeding transitional storehouse includes feed inlet I and discharge port I, and Pneumatic butterfly valve I 4, the spiral shell are equipped on the feed inlet I and discharge port I The discharge port for revolving feeder is connected with the feed inlet I of charging transitional storehouse.
The disintegrating mechanism includes pulverizing chamber 5, ring pipe 6, four air current spray nozzles 7, feed inlets II, and the disintegrating mechanism is logical It crosses support base 8 to fix on the ground, be connected between the discharge port I and feed inlet II by inclined tube 9, the inclined tube 9 and crushing Angle between room 5 is 20-40 °, and the ring pipe 6 is arranged around pulverizing chamber 5, and the ring pipe 6 is equipped with air inlet 10 and four The air inlet 10 of a gas outlet, the ring pipe 6 is connected by air inlet pipe 11 with cooling driers 12, and the air inlet pipe 11 passes through branch Strut is fixed on support base 8, and the air inlet 10 of the ring pipe 6 is connected by flange with air inlet pipe 11, the ring pipe 6 Air inlet and air inlet pipe 11 junction be equipped with pressure gauge 13 and regulating wheel 14, the gas outlet of the ring pipe 6 is in ring pipe 6 On be uniformly distributed, the gas outlet of the ring pipe 6 is connected by vertical tube 15 with air current spray nozzle one end, and the air current spray nozzle is another End is protruded into pulverizing chamber 5, and the air current spray nozzle is Laval nozzle, and the internal diameter of the Laval nozzle is 4 ㎜, high-speed flow Entered inside pulverizing chamber by Laval nozzle, the gas temperature of ejection is at 10 DEG C or so, and high pressure gas is in instantaneous expansion meeting Heat absorption, therefore the gas entered inside pulverizing chamber can reduce the temperature inside pulverizing chamber, the object under low temperature environment to a certain extent Material meeting embrittlement lacks elasticity, achievees the purpose that easily to crush.
The sorting mechanism is located at 5 top of pulverizing chamber, and the sorting mechanism includes screening room 17, impeller, motor 18 and goes out Expect channel 19, the impeller is located in screening room 17, and the impeller rotates under the drive of motor 18, and the impeller diameter is equal to Expect that 19 diameter of channel, the tapping channel 19 are hollow pipeline configuration, described 19 one end of tapping channel is located in screening room 17, The other end is located at outside screening room 17, and gap 36 is equipped between the tapping channel and impeller, and the tapping channel is outdoor in screening One end be equipped with air inlet 37, the tapping channel 19 at the gap 36 with impeller be equipped with several air holes 20, the air holes 20 are evenly distributed on tapping channel 19 on the end face at gap 36.
The impeller includes blade 21 and two support chips 22, and the impeller is titanium alloy impeller, and the support chip 22 is straight Diameter is 140 ㎜, and 80-90 blade 21 is uniformly distributed between two support chips 22, and the support chip 22 passes through flange and motor 18 It is connected, the revolving speed of the motor 18 is 12000 turns/min, and the blade 21 encloses chamber, the chamber and tapping channel 19 Connection, with air motion to screening interior, the material less than screening diameter produces smashed superfine-material in the rotation of impeller Under raw centrifugal force effect, enter in the chamber that blade encloses with air-flow, then next program is flowed by tapping channel, greatly It is got rid of by impeller to the inner wall of screening room in the material of screening diameter, the pulverizing chamber of lower section is fallen under nature.
It is equipped with secondary screen between the sorting mechanism and collecting mechanism and selects mechanism 23, it includes screening that the secondary screen, which selects mechanism, Room II, impeller II, motor II and tapping channel II, the impeller II include 60 blades, and secondary screen selects the structure and sieve of mechanism Select the structure of mechanism identical, it includes 60 blades that difference, which is that secondary screen selects mechanism, and secondary screen selects mechanism to realize pulverized object The screening profound again of material, guarantees that the superfine-material diameter distribution filtered out is smaller, according to actual needs Ke She bis- Sorting mechanism can not also set secondary screen and select mechanism.
The collecting mechanism includes cyclone separator 24 and discharging transitional storehouse 25, and the tapping channel 19 passes through discharge pipe 26 are connected with cyclone separator 24, and the discharging transitional storehouse 25 includes feed inlet IV and discharge port IV, the cyclone separator Discharge port III with discharging transitional storehouse feed inlet IV be connected, be equipped with Pneumatic butterfly valve on the feed inlet IV and discharge port IV II 27, the discharge port IV of the discharging transitional storehouse is connected with collecting bag 28, is equipped with Pneumatic knocking hammer in the discharging transitional storehouse 25.
The auxiliary body includes air compressor 29, filter I 30, cooling driers 12, filter II 31 and air accumulator 16, The air compressor 29 is permanent-magnetic variable-frequency double-screw air compressor, and the filter I 30 is removal filtration device, the filtering Device II 31 is oil removal filter.
The application method of the air-flow crushing unit of the present embodiment is as follows:
(1) material to be processed is placed in loading hopper, enters charging transition by feed inlet I under the action of screw feeder Storehouse is entering inclined tube by discharge port I, is falling in pulverizing chamber, wherein the control of feed inlet I and discharge port I in Pneumatic butterfly valve I Under system, when feed inlet I is opened, discharge port I is in close state, and when feed inlet I is closed, discharge port I is in the open state, It is one one entrance so as to cause the material to be processed for entering pulverizing chamber;
(2) there is angle between inclined tube and pulverizing chamber, material to be processed is fallen in the case where there is acceleration in pulverizing chamber, 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-speed flow Accelerate, fierce collision occurs between material to be processed, realizes the ultra-fine grinding of material;
(3) pulverized material selects the product of partial size qualification, qualified product with air motion to screening room, impeller Pass through cyclone collection with air-flow, the transitional storehouse that discharged after enters collecting bag, and the underproof material of partial size cannot be introduced into In the chamber that blade is enclosed, returns again to pulverizing chamber and continue the partial size for being crushed to requirement.
The formation of the present embodiment mesohigh gas is as follows:
Air successively passes through removal filtration device and cooling driers after the compression of permanent-magnetic variable-frequency twin-screw high-efficiency air compressor, 6 grades of dry airs of aqueous < 3ppm are obtained, for dry air using oil removal filter, the high pressure for obtaining oil-containing < 1ppm is empty Gas enters back into air accumulator, then is supplied by air accumulator and crush unit.
The flow direction of the present embodiment mesohigh gas is as follows:
The high pressure gas come out from air accumulator, is divided into three branches, is disintegrating mechanism branch, sorting mechanism branch respectively Mechanism branch is selected with secondary screen;
(1) high pressure gas of disintegrating mechanism branch is introduced into circulating line, then respectively enters 4 Laval nozzles, through drawing Wa Er nozzle accelerates to be formed ultrahigh speed air-flow, and ultrahigh speed air-flow injects pulverizing chamber, while 4 or multiple air current spray nozzles are in ring pipe On divide equally and be distributed, and work at the same time, so that crushing indoor powder realizes depth refinement;
(2) sorting mechanism branch and secondary screen select the high pressure gas circulation direction of mechanism branch to be consistent, high pressure gas By the air inlet on tapping channel, into the annular air channel in tapping channel tube wall, enter back into tapping channel tube wall In cylindrical air streams, cylindrical air streams are parallel with the center line of tapping channel, and divide equally be distributed in the pipe wall, therefore high pressure gas Body enters gap by air inlet-annular air channel-cylindrical air streams outflow, and high pressure gas is filled between tapping channel and impeller Gap, in the case where guaranteeing that the rotation of impeller is not influenced by tapping channel, so that the chamber that encloses of blade and discharging are logical Road forms the pipeline of connection, and the material powders after being screened will not return to screening interior from gap, while not being screened Material powders will not be entered in tapping channel by gap.
Embodiment 2:
Collision crashing is only carried out in high-speed flow, obtained powder diameter is limited, and is made now with by liquid nitrogen etc. Cryogen freezes comminuting method for what is crushed after pulverized material embrittlement, and patent document CN200410014235 discloses a kind of lazy Property gas shield micro jet group, crushing unit in this patent is using totally enclosed type, by the common of gas source part Air becomes nitrogen (inert gas), and nitrogen is also constantly in closed pipeline and container, while nitrogen is also required to protect again It could be flowed under warm environment, this is more demanding to the confined condition of equipment, higher cost, when nitrogen leaks, operator The danger easily to suffocate.Patent document CN2014208596973 discloses a kind of superfreeze formula air flow crushing device, in this dress In setting, by normal air gas source under the action of high pressure liquid nitrogen, subzero 100 DEG C of subzero 170- are rapidly cooled to, allows injection High-speed flow temperature reduces rapidly, and material to be processed reaches rapidly low temperature brittleness, disadvantage is low temperature under low-temperature airflow effect It cannot act directly on material to be processed, the conduction of temperature needs the time, it cannot be guaranteed that the abundant low temperature for being applied material is crisp Change.
In order to realize the low temperature brittleness of material to be processed, we treat processing materials and increase two step low-temperature treatments, and first Step is that the loading hopper of embodiment 1 is changed into sandwich wall type loading hopper, and the sandwich wall type loading hopper includes feeding chamber 32 and pre-cooling storehouse 33, the pre-cooling storehouse 33 is connected with nitrogen gas tank 34, and liquid nitrogen, the pre-cooling storehouse 33 and nitrogen gas tank 34 are filled in the nitrogen gas tank 34 Between be equipped with high pressure valve 35.
Second step is that instillation storehouse 36, described 36 one end of instillation storehouse and 34 phase of nitrogen gas tank are equipped on the charging transitional storehouse Even, liquid nitrogen is filled in the nitrogen gas tank 34,36 other end of instillation storehouse protrudes into inside charging transitional storehouse, and liquid nitrogen passes through instillation Storehouse is directly instiled on the material to be processed of charging transitional storehouse, and instillation storehouse is to the speed of instillation liquid nitrogen inside charging transitional storehouse 20-60mL/min ensure that the abundant freezing of material to be processed so that material to be processed is frozen again, from charging transitional storehouse Temperature of charge out can reach-150-170 DEG C.
The application method of the air-flow crushing unit of the present embodiment is as follows:
(1) material to be processed is placed in sandwich wall type loading hopper, is pre-chilled in storehouse and is filled with liquid nitrogen, material to be processed is in feeding chamber Interior sufficiently to be freezed, so that the temperature of material to be processed is reduced to-120-130 DEG C, the material to be processed of low temperature is in screw feeding Charging transitional storehouse is entered by feed inlet I under the action of device, then inclined tube is entered by discharge port I, is fallen in pulverizing chamber, In, feed inlet I and discharge port I are under the control of Pneumatic butterfly valve I, and when feed inlet I is opened, discharge port I is in close state, when When feed inlet I is closed, discharge port I is in the open state, so as to cause the material to be processed for entering pulverizing chamber be one one into Enter, material to be processed is contacted again freezing by the liquid nitrogen in instillation storehouse in charging transitional storehouse, comes out from charging transitional storehouse Temperature of charge can reach-150-170 DEG C;
(2) there is angle between inclined tube and pulverizing chamber, the material to be processed of low temperature is fallen in the case where there is acceleration in powder Broken room, pressure-air accelerate 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 Fast air-flow accelerates, and fierce collision occurs between material to be processed, realizes the ultra-fine grinding of material;
(3) pulverized material selects the product of partial size qualification, qualified product with air motion to screening room, impeller Pass through cyclone collection with air-flow, the transitional storehouse that discharged after enters collecting bag, and the underproof material of partial size cannot be introduced into In the chamber that blade is enclosed, returns again to pulverizing chamber and continue the partial size for being crushed to requirement.
Embodiment 3
Annular air channel and several cylindrical air streams, the air inlet and annular air channel are equipped in the tube wall of tapping channel It is connected, the annular air channel is located in the tube wall of tapping channel, and the center line of the annular air channel and tapping channel is perpendicular, The annular air channel is connected with several cylindrical air streams, and described cylindrical air streams one end is connected with annular air channel, and the other end prolongs Extend to gap location and form air holes, the cylindrical air streams are uniformly distributed in the tube wall of tapping channel, the cylindrical air streams with The center line of tapping channel is parallel.
The flow direction of the present embodiment mesohigh gas is as follows:
The high pressure gas come out from air accumulator, is divided into three branches, is disintegrating mechanism branch, sorting mechanism branch respectively Mechanism branch is selected with secondary screen;
(1) high pressure gas of disintegrating mechanism branch is introduced into circulating line, then respectively enters 4 Laval nozzles, through drawing Wa Er nozzle accelerates to be formed ultrahigh speed air-flow, and ultrahigh speed air-flow injects pulverizing chamber, while 4 or multiple air current spray nozzles are in ring pipe On divide equally and be distributed, and work at the same time, so that crushing indoor powder realizes depth refinement;
(2) sorting mechanism branch and secondary screen select the high pressure gas circulation direction of mechanism branch to be consistent, high pressure gas By the air inlet on tapping channel, into the annular air channel in tapping channel tube wall, enter back into tapping channel tube wall In cylindrical air streams, cylindrical air streams are parallel with the center line of tapping channel, and divide equally be distributed in the pipe wall, therefore high pressure gas Body enters gap by air inlet-annular air channel-cylindrical air streams outflow, and high pressure gas is filled between tapping channel and impeller Gap, in the case where guaranteeing that the rotation of impeller is not influenced by tapping channel, so that the chamber that encloses of blade and discharging are logical Road forms the pipeline of connection, and the material powders after being screened will not return to screening interior from gap, while not being screened Material powders will not be entered in tapping channel by gap.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement;And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (1)

1. a kind of air-flow crushing unit, which is characterized in that airslide disintegrating mill includes feeding mechanism, disintegrating mechanism, sorting mechanism, receipts Collecting mechanism and auxiliary body;
The feeding mechanism includes loading hopper, screw feeder, the lower end discharge port of loading hopper and the feed inlet of screw feeder It is connected, the screw feeder is arranged in parallel;
The disintegrating mechanism includes pulverizing chamber, ring pipe, several air current spray nozzles, feed inlet II, and the ring pipe is equipped with air inlet Mouth and several gas outlets, the air inlet of the ring pipe are connected by air inlet pipe with cooling driers, the outlet of the ring pipe Opening's edge annular bore is uniformly distributed, and the gas outlet of the ring pipe is connected by vertical tube with air current spray nozzle one end, the gas The flow nozzle other end is located in pulverizing chamber;
The sorting mechanism is located above pulverizing chamber, and the sorting mechanism includes screening room, impeller, motor and tapping channel, institute It states impeller and is located at screening interior, the profile ID is equal to tapping channel internal diameter, and the tapping channel is hollow pipeline configuration, Described tapping channel one end is located at screening interior, and the other end is outdoor positioned at screening, between being equipped between the tapping channel and impeller Gap, the tapping channel are equipped with air inlet in the outdoor one end of screening, the tapping channel with impeller clearance at be equipped with it is several A air holes, the air holes are evenly distributed on tapping channel on the end face of gap location;The feeding mechanism and disintegrating mechanism it Between be equipped with charging transitional storehouse, the charging transitional storehouse is vertically arranged, and the charging transitional storehouse includes feed inlet I and discharge port I, institute It states and is equipped with Pneumatic butterfly valve I on feed inlet I and discharge port I, the charging of the discharge port and charging transitional storehouse of the screw feeder Mouth I is connected, and is connected between the discharge port I and feed inlet II by inclined tube, the angle between the inclined tube and pulverizing chamber is 20- 40°;The ring pipe is arranged around pulverizing chamber, and the air inlet of the ring pipe is connected by flange with air inlet pipe, the ring The air inlet of shape pipe and the junction of air inlet pipe are equipped with pressure gauge and regulating wheel;The air current spray nozzle is Laval nozzle, institute The internal diameter for stating Laval nozzle is 4 ㎜, and the disintegrating mechanism is fixed on the ground by support base, and the air inlet pipe passes through support Bar is fixed on support base;The collecting mechanism includes cyclone separator and discharging transitional storehouse, and the tapping channel passes through discharging Pipeline is connected with cyclone separator, and the discharging transitional storehouse includes feed inlet IV and discharge port IV, the cyclone separator Discharge port III is connected with the feed inlet IV of discharging transitional storehouse, is equipped with Pneumatic butterfly valve on the feed inlet IV and discharge port IV II, the discharge port IV of the discharging transitional storehouse is connected with collecting bag;The impeller includes blade and two support chips, the impeller It is rotated under motor drive, the impeller is titanium alloy impeller, and the support chip diameter is 140 ㎜, between two support chips Even 80-90 blade of distribution, the support chip are connected to the motor by flange, and the revolving speed of the motor is 12000 turns/min, institute It states blade and encloses chamber, the chamber is connected to tapping channel;The auxiliary body includes air compressor, filter I, cold Dry machine, filter II and air accumulator;The air compressor is permanent-magnetic variable-frequency double-screw air compressor, and the filter I is Removal filtration device, the filter II are oil removal filter;The loading hopper is sandwich wall type loading hopper, the sandwich wall type loading hopper Including feeding chamber and pre-cooling storehouse, the pre-cooling storehouse is connected with nitrogen gas tank, is filled with liquid nitrogen in the nitrogen gas tank, the pre-cooling storehouse and High pressure valve is equipped between nitrogen gas tank;The charging transitional storehouse is equipped with instillation storehouse, and instillation storehouse one end is connected with nitrogen gas tank, institute It states and is filled with liquid nitrogen in nitrogen gas tank, the instillation storehouse other end protrudes into inside charging transitional storehouse;The sorting mechanism and collection machine It is equipped with secondary screen between structure and selects mechanism, it includes screening room II, impeller II, motor II and tapping channel that the secondary screen, which selects mechanism, II, the impeller II includes 60 blades.
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CN109201299B (en) * 2018-08-26 2021-05-07 南京理工大学 Preparation device of special superfine powder
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CN201020399Y (en) * 2007-04-06 2008-02-13 昆山密友实业有限公司 No-dust-outflow environmental protection intelligent fluidized bed air current ultramicro crusher
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