CN107596938A - Powder mixing system and powder mixing device - Google Patents
Powder mixing system and powder mixing device Download PDFInfo
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- CN107596938A CN107596938A CN201711014639.5A CN201711014639A CN107596938A CN 107596938 A CN107596938 A CN 107596938A CN 201711014639 A CN201711014639 A CN 201711014639A CN 107596938 A CN107596938 A CN 107596938A
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Abstract
The invention provides a kind of powder mixing device, including inwall to be the mixing chamber of arc structure, and is respectively arranged at the both ends of mixing chamber powder direction of transfer, inputs the feeding-passage of fine powder respectively and exports the tapping channel of powder after mixing；Mixing chamber is located at the side of feeding-passage, is provided with and is connected with mixing chamber, and input additive adds agent passage.Feeding-passage is passed through fine powder, agent passage is added to be passed through additive, after two strands of air-flows of the air-flow and feeding additive that convey fine powder are mutually mixed, transmitted in the inner chamber of mixing chamber, the interior cavity wall of mixing chamber is arc structure, pass through the control to airflow direction, so that circular arc of the transmission air-flow in mixing chamber through its inwall is oriented to transfer structure in the shape of a spiral, so that two strands of air-flows mutually disturb, improve the mixing uniformity of fine powder and additive, so that the two is sufficiently mixed, meet the technological requirement of subsequent handling.Present invention also offers a kind of powder mixing system.
Description
Technical field
The present invention relates to neodymium iron boron magnetic body technical field, is mixed more specifically to a kind of powder mixing system and powder
Expect device.
Background technology
Ndfeb magnet can be divided into two kinds of Agglutinate neodymium-iron-boron and sintered NdFeB, and it is actually injection molding to bond, and
Sintering is to vacuumize to be molded by being heated at high temperature, and ndfeb magnet is to the permanent magnet so far with most strong magnetic force.
Now with the popularization and application that antioxidant, lubricant technique are added in Sintered NdFeB magnet Zhi Fen workshop sections, neodymium
Ferroboron powder adds antioxidant and lubricant has a great impact to the performance of Sintered NdFeB magnet, how to select to add
Add the composition of agent and the amount of additive, the uniformity and die mould orientation of neodymium iron boron powder can be influenceed, to high-performance neodymium-iron-boron magnet
Preparation have very important meaning.Powder modification additive should have complex function, prevent powder particle and air contact, rise
To anti-oxidation effect；Weaken the magnetostatic effect between powder particle, reduce the reunion between powder particle, play the work of dispersant
With；Increase the mobility and mobility of powder particle, the effect of super fatting agent.
During existing powder process processed, fine powder that airflow milling is obtained is mixed fine powder with additive.Mixed process passes through
Agitating procedure mixes, and in fine powder whipping process, adds additive, makes the two mixing, however, stirring technique is difficult to additive
It is well mixed with fine powder, influences the sintering effect of follow-up neodymium iron boron magnetic body.
Therefore, how to improve the mixing uniformity of powder process fine powder and additive processed, be current those skilled in the art urgently
The problem of to be solved.
The content of the invention
In view of this, the invention provides a kind of powder mixing device, to improve the mixed of powder process fine powder and additive processed
Close uniformity；Present invention also offers a kind of powder mixing system.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of powder mixing device, including inwall are the mixing chamber of arc structure, and are respectively arranged at the mixing chamber
The both ends of powder direction of transfer, the feeding-passage of fine powder is inputted respectively and exports the tapping channel of powder after mixing；
The mixing chamber is located at the side of the feeding-passage, is provided with and is connected with the mixing chamber, inputs additive
Add agent passage.
Preferably, in above-mentioned powder mixing device, the mixing chamber is the mixing chamber that inner chamber is cylindrical structure.
Preferably, in above-mentioned powder mixing device, the feedstock direction of the feeding-passage, and the tapping channel
Discharge direction, along the arranged tangential of the mixing chamber inner chamber.
Preferably, in above-mentioned powder mixing device, the feeding-passage and the tapping channel are respectively positioned at described mixed
Expect the both sides of room radial direction.
Preferably, in above-mentioned powder mixing device, described plus agent passage is located at the axial direction of the mixing chamber, close to described
One end of feeding-passage；The air pressure of the air inlet pipe is more than the air pressure of the mixing chamber.
Preferably, in above-mentioned powder mixing device, described plus agent passage includes connecting with the mixing chamber, output gas flow
Air inlet pipe, and connected with the air inlet pipe, feeding additive plus agent pipe.
Preferably, in above-mentioned powder mixing device, air inlet pipe connects one end of the mixing chamber, sets by the air inlet
The inside of pipe to the air inlet pipe end internal diameter divergent structure outlet enlarging.
Preferably, in above-mentioned powder mixing device, the internal diameter of the air inlet pipe is 0.2~5mm, the outlet enlarging
End diameter is 5~10mm.
Preferably, in above-mentioned powder mixing device, in addition to the fine powder flow of the regulation feeding-passage adds with described
The control system of the flow proportional of the additive flow of agent passage.
A kind of powder mixing system, including the airflow milling of powder processed is carried out to powder particle, and additive is conveyed
Additive conveying device, the as above powder described in any one between the mill room of the airflow milling and the additive conveying device
Mixing device.
Powder mixing device provided by the invention, including inwall are the mixing chamber of arc structure, and are respectively arranged at mixed
Expect the both ends of room powder direction of transfer, input the feeding-passage of fine powder respectively and export the tapping channel of powder after mixing；Batch mixing
Room is located at the side of feeding-passage, is provided with and is connected with mixing chamber, and input additive adds agent passage.Fine powder with air-flow stream
It is dynamic, it is passed through by the feeding-passage of mixing chamber one end, is sent to the tapping channel of the other end through its inner chamber, in fine powder transmit process,
Mixing chamber is located at feeding-passage one end plus agent passage is passed through additive, conveys the air-flow of fine powder and two strands of gas of feeding additive
After stream is mutually mixed, transmitted in the inner chamber of mixing chamber, because the interior cavity wall of mixing chamber is arc structure, by airflow direction
Control so that the circular arc of transmission air-flow in mixing chamber through its inwall is oriented to transfer structure in the shape of a spiral, so that two strands
Air-flow mutually disturbs, and improves the mixing uniformity of fine powder and additive so that the two is sufficiently mixed, the technique for meeting subsequent handling
It is required that.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of powder mixing device provided by the invention；
Fig. 2 is the air current flow structural representation of powder mixing device provided by the invention；
Fig. 3 is in Fig. 1 plus the sectional view of agent passage.
Embodiment
The invention discloses a kind of powder mixing device, the mixing uniformity of powder process fine powder and additive processed is improved；
Present invention also offers a kind of powder mixing system.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiments of the invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
As shown in Figure 1-Figure 3, Fig. 1 is the structural representation of powder mixing device provided by the invention；Fig. 2 carries for the present invention
The air current flow structural representation of the powder mixing device of confession；Fig. 3 is in Fig. 1 plus the sectional view of agent passage.
The invention provides a kind of powder mixing device, including inwall to be the mixing chamber 3 of arc structure, and sets respectively
In the both ends of the powder direction of transfer of mixing chamber 3, the feeding-passage 1 of fine powder is inputted respectively and exports the tapping channel of powder after mixing
2；Mixing chamber 3 is located at the side of feeding-passage 1, is provided with and is connected with mixing chamber 3, and input additive adds agent passage.Fine powder with
The flowing of air-flow, it is passed through by the feeding-passage 1 of the one end of mixing chamber 3, the tapping channel 2 of the other end, fine powder is sent to through its inner chamber
In transmit process, mixing chamber 3 is located at the one end of feeding-passage 1 plus agent passage is passed through additive, conveys air-flow and the conveying of fine powder
After two strands of air-flows of additive are mutually mixed, transmitted in the inner chamber of mixing chamber 3, because the interior cavity wall of mixing chamber 3 is circular arc knot
Structure, pass through the control to airflow direction so that circular arc of the transmission air-flow through its inwall in mixing chamber is oriented to be transmitted in the shape of a spiral
Structure, so that two strands of air-flows mutually disturb, improving the mixing uniformity of fine powder and additive so that the two is sufficiently mixed,
Meet the technological requirement of subsequent handling.
In the specific embodiment of this case one, mixing chamber 3 is the mixing chamber 3 that inner chamber is cylindrical structure.The inner chamber of mixing chamber 3 is
Cylinder-like structure, feeding-passage 1 and tapping channel 2 are arranged at the both ends of the cylindric axial direction of mixing chamber 3, add agent passage to be located at cylinder
The side of the axial direction of shape mixing chamber 3, the additive of blowout mixes with the fine powder that feeding-passage 1 is passed through, by controlling the inner chamber of mixing chamber 3
The flow direction of interior air-flow so that two strands of air-flows during intracavitary flowing, produce turbulent flow, intersect mixing, so as to improve in mixing chamber 3
Mixing uniformity.
Preferably, the feedstock direction of feeding-passage 1, and the discharging direction of tapping channel 2, along the inner chamber of mixing chamber 3
Arranged tangential.The feedstock direction of feeding-passage 1 is tangential along mixing chamber 3, and its air-flow being blown into is blown into along the tangential of mixing chamber 3
The inwall of mixing chamber 3, the arc structure through inwall circle round to the air-flow blowed, in the inner chamber of mixing chamber 3 along cylindrical structure
In transmit process, helically structure flows gyration airflow along the axial direction of mixing machine 3, is finally flowed out through tapping channel 2.Can be by batch mixing
The inwall arc structure of room 3 is arranged to the axial arranged helical structure along mixing chamber 3, so as to improve the disorderly of batch mixing indoor air flow
Degree of irregularity is flowed, and then improves the mixing uniformity of fine powder and additive.
In the specific embodiment of this case one, feeding-passage 1 and tapping channel 2 are respectively positioned at the both sides of the radial direction of mixing chamber 3.Enter
Expect the feedstock direction of passage 1 and the discharging direction of tapping channel 2, along the radial direction of mixing chamber 3, and be located at the both sides of radial direction respectively.
With reference to the tangential air intake of feeding-passage 1 and tapping channel 2 along the inner chamber of mixing chamber 3 and air-out, it will be understood that feeding-passage 1 and go out
Material passage 2 is in the vias inner walls and batch mixing of different planes, feeding-passage 1 and tapping channel 2 from the radial section of mixing chamber 3
Arranged tangential of the side that the interior cavity wall of room 3 connects along inner chamber.
Specifically, it is rectangular channel feeding-passage 1 and tapping channel 2 to be disposed as into cross section, and the outer wall of mixing chamber is set
The platform of frame support feeding-passage 1 and tapping channel 2 is put, the fine powder air-flow that rectangular channel is sent into tangentially directly is blown into mixed along inner chamber
Expect the inwall of room 3.Feeding-passage 1 and tapping channel 2 may be configured as integrative-structure with mixing chamber 3.
In the specific embodiment of this case one, agent passage is added to be located at the axial direction of mixing chamber 3, close to one end of feeding-passage 1.Add
Agent passage is located at the axial direction of mixing chamber 3, interior into screw fluid structure in mixing chamber 3 by the air-flow that feeding-passage 1 is sent into, and adds agent to lead to
Axial direction of the road input direction along mixing chamber 3 is passed through, and the air-flow with feeding-passage 1 is in chi structure, during due to two strands of air flow contacts
Mutually impact so that the interior air-flow flow direction of mixing chamber 3 is in irregularly turbulent condition, blows the air-flow of fine powder, with blowing addition
The air-flow of agent, because air-flow intersection fine powder and additive are broken up, therefore the purpose for being sufficiently mixed fine powder and additive is can reach,
It is well mixed.
In the specific embodiment of this case one, agent passage is added to include connecting with mixing chamber 3, the air inlet pipe 4 of output gas flow, and with
Air inlet pipe 4 connects, and feeding additive adds agent pipe 5.Additive is entered in mixing chamber 3 by blowing for air-flow, adds agent passage
Including air inlet pipe 4 and add the two parts of agent pipe 5, air inlet pipe 4 and mixing chamber 3 are coaxially arranged, add agent pipe 5 to add agent perpendicular to air inlet pipe 3
The additive that pipe 5 is sent into once is brushed into air inlet pipe 4, is broken up into mixing chamber 5 is interior by secondary so that air inlet pipe 4 exports
The air-flow high speed impact that is blowed by feeding-passage 1 of additive, enter mixing chamber 3, more conducively additive adding procedure in vaporific
Uniformity so that the adding proportion of fine powder and additive is constant in mixing chamber 3, mixing uniformity improve.
In the specific embodiment of this case one, the air pressure of air inlet pipe 4 is more than the air pressure of mixing chamber 3.Air-flow in feeding-passage 1
Convey in fine powder to mixing chamber 3, add agent passage interior air-flow feeding additive, two strands of air-flows are mixed in mixing chamber 3, should ensure that mixed
Expect that air pressure no more than the air pressure for adding the input of agent channel inlet pipe, is prevented in mixing chamber 3 in material mixed process, air-flow returns in room 3
Conductance causes the interior air-flow of air inlet pipe 4 to be unable to constant output, influences the adding proportion of additive.
In the specific embodiment of this case one, the input of feeding-passage 1 and the output end of tapping channel 2 are disposed as connecting
Flange.The 1 input connection airflow milling of feeding-passage, the output end of tapping channel 2 connects follow-up pipeline, by feeding-passage
1 and tapping channel 2 on be respectively provided with adpting flange, be easy to the dismounting of mixing chamber 3, clear up, improve dismounting convenience.
As shown in figure 3, Fig. 3 is the internal structure schematic diagram for adding agent passage of powder mixing device in Fig. 1.
In the specific embodiment of this case one, air inlet pipe 4 connects one end of mixing chamber 3, sets inside by air inlet pipe 4 to entering
The end internal diameter divergent structure outlet enlarging 41 of tracheae 4.The additive that the powder that feeding-passage 1 is passed through is discharged with air inlet pipe 4 mixes
Close, easily deposited in the outlet section of air inlet pipe 4, can by the way that the outlet side of air inlet pipe 4 to be set to the outlet enlarging 41 of internal diameter flaring
Effectively prevent powder from blocking air inlet pipe in this place.Meanwhile air inlet pipe 4, by setting outlet enlarging 41, the size of its internal diameter is progressively
Change, air pressure is kept stable, be advantageous to normal work.
Preferably, the internal diameter of air inlet pipe 4 is 0.2~5mm, and the end diameter of outlet enlarging 41 is 5~10mm.Outlet enlarging
41 may be configured as the outlet enlarging of conical structure, it can also be provided that other forms, generally reach equilibrium air pressure, prevent from accumulating
The purpose of powder.
In the specific embodiment of this case one, in addition to the fine powder flow of regulation feeding-passage 1 and the additive for adding agent passage
The control system of the flow proportional of flow.Fine powder and additive in mixed process, it is necessary to strictly control the mixed proportion of the two,
The flow of additive should be proportional with the fine powder flow of feeding-passage 1 in air inlet pipe 4, because real-time powder flow measures difficulty,
The indoor correlation containing fine powder weight can be ground according to powder flow and airflow milling, the fine powder weight being passed through by airflow milling mill room
Amount, the fine powder gravimetric value measured is combined by control system, determines additive flow in real time, addition is passed through so as to adjust to add in agent pipe
The conveying weight of agent, so as to be controlled to the mixed proportion of fine powder and additive.
Based on the powder mixing device provided in above-described embodiment, present invention also offers a kind of powder mixing system, bag
The airflow milling that powder processed is carried out to powder particle is included, and the additive conveying device conveyed to additive, the mill of the airflow milling
Powder mixing device as provided in above-mentioned embodiment is set between room and the additive conveying device.
Because the powder mixing system employs the powder mixing device of above-described embodiment, thus the powder mixing system by
The beneficial effect that powder mixing device is brought refer to above-described embodiment.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of powder mixing device, it is characterised in that be the mixing chamber of arc structure including inwall, and be respectively arranged at institute
The both ends of mixing chamber powder direction of transfer are stated, the feeding-passage of fine powder is inputted respectively and exports the tapping channel of powder after mixing；
The mixing chamber is located at the side of the feeding-passage, is provided with and is connected with the mixing chamber, and input additive adds agent
Passage.
2. powder mixing device according to claim 1, it is characterised in that the mixing chamber is that inner chamber is cylindrical structure
Mixing chamber.
3. powder mixing device according to claim 2, it is characterised in that the feedstock direction of the feeding-passage, and
The discharging direction of the tapping channel, along the arranged tangential of the mixing chamber inner chamber.
4. powder mixing device according to claim 3, it is characterised in that the feeding-passage and the tapping channel point
Not Wei Yu the mixing chamber radial direction both sides.
5. powder mixing device according to claim 3, it is characterised in that described plus agent passage is located at the mixing chamber
Axially, close to one end of the feeding-passage；The air pressure of the air inlet pipe is more than the air pressure of the mixing chamber.
6. powder mixing device according to claim 5, it is characterised in that described plus agent passage includes and the mixing chamber
Connection, the air inlet pipe of output gas flow, and connected with the air inlet pipe, feeding additive adds agent pipe.
7. powder mixing device according to claim 5, it is characterised in that the air inlet pipe connects the one of the mixing chamber
End, end internal diameter divergent structure outlet enlarging of the inside by the air inlet pipe to the air inlet pipe is set.
8. powder mixing device according to claim 7, it is characterised in that the internal diameter of the air inlet pipe is 0.2~5mm,
The end diameter of the outlet enlarging is 5~10mm.
9. powder mixing device according to claim 1, it is characterised in that also include the fine powder for adjusting the feeding-passage
The control system of flow and the flow proportional of described plus agent passage additive flow.
A kind of 10. powder mixing system, it is characterised in that the airflow milling including carrying out powder processed to powder particle, and to additive
The additive conveying device conveyed, such as claim 1- between the mill room of the airflow milling and the additive conveying device
Powder mixing device in 9 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014639.5A CN107596938B (en) | 2017-10-26 | 2017-10-26 | Powder mixing system and powder mixing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014639.5A CN107596938B (en) | 2017-10-26 | 2017-10-26 | Powder mixing system and powder mixing device |
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| CN107596938A true CN107596938A (en) | 2018-01-19 |
| CN107596938B CN107596938B (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711014639.5A Active CN107596938B (en) | 2017-10-26 | 2017-10-26 | Powder mixing system and powder mixing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054216A (en) * | 2019-04-01 | 2019-07-26 | 北方奥钛纳米技术有限公司 | It prepares the method for lithium titanate and prepares the equipment of lithium titanate |
| CN110091612A (en) * | 2019-04-09 | 2019-08-06 | 镭德杰标识科技武汉有限公司 | A kind of autonomous stirring system of chalk ink jet numbering machine |
| CN110860249A (en) * | 2019-11-28 | 2020-03-06 | 江西金力永磁科技股份有限公司 | Neodymium iron boron powder stirring process and stirring system and neodymium iron boron magnetic steel manufacturing process |
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| US6207064B1 (en) * | 1999-07-12 | 2001-03-27 | Joseph Gargas | Ozone contact chamber |
| CN201701889U (en) * | 2010-06-02 | 2011-01-12 | 上海培宝康实业股份有限公司 | Solid powder efficient mixer |
| CN104411394A (en) * | 2012-09-11 | 2015-03-11 | 哈利伯顿能源服务公司 | Method and apparatus for centrifugal blending system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6207064B1 (en) * | 1999-07-12 | 2001-03-27 | Joseph Gargas | Ozone contact chamber |
| CN201701889U (en) * | 2010-06-02 | 2011-01-12 | 上海培宝康实业股份有限公司 | Solid powder efficient mixer |
| CN104411394A (en) * | 2012-09-11 | 2015-03-11 | 哈利伯顿能源服务公司 | Method and apparatus for centrifugal blending system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110054216A (en) * | 2019-04-01 | 2019-07-26 | 北方奥钛纳米技术有限公司 | It prepares the method for lithium titanate and prepares the equipment of lithium titanate |
| CN110091612A (en) * | 2019-04-09 | 2019-08-06 | 镭德杰标识科技武汉有限公司 | A kind of autonomous stirring system of chalk ink jet numbering machine |
| CN110860249A (en) * | 2019-11-28 | 2020-03-06 | 江西金力永磁科技股份有限公司 | Neodymium iron boron powder stirring process and stirring system and neodymium iron boron magnetic steel manufacturing process |
| CN110860249B (en) * | 2019-11-28 | 2021-10-15 | 江西金力永磁科技股份有限公司 | Neodymium iron boron powder stirring process and stirring system and neodymium iron boron magnetic steel manufacturing process |
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