CN208695217U - A kind of airflow milling separation system for avoiding being mixed into tailing in powder - Google Patents
A kind of airflow milling separation system for avoiding being mixed into tailing in powder Download PDFInfo
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- CN208695217U CN208695217U CN201821164129.6U CN201821164129U CN208695217U CN 208695217 U CN208695217 U CN 208695217U CN 201821164129 U CN201821164129 U CN 201821164129U CN 208695217 U CN208695217 U CN 208695217U
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Abstract
The utility model relates to sintered NdFeB production equipment related fields, specifically a kind of airflow milling separation system for avoiding being mixed into tailing in powder, it is intended to solve the technical issues of being easily mixed into tailing when the separation powder of existing sintered NdFeB gas mill room.It is provided with the tailing channel being made of tailing discharge port, tailing separate pipeline, tailing cyclone separator, tailing exhaust pipe, and fine powder channel and tailing channel are connected to by three-way converging valve with filter, pass through the opening and closing in the opening and closing of control three-way converging valve controllable fine powder channel and tailing channel, without closing separation wheel when tailing is spat in gas mill room, three-way converging valve need to only be closed, tailing channel is connected, realize that tailing successively passes through tailing discharge port, tailing separate pipeline reaches tailing cyclone separator, fine powder channel is needed not move through, fine powder will not be polluted；In addition, spitting after tailing in gas mill room without returning charge, the production efficiency of powder is substantially increased, while also making instantaneously to spit that tailing, cleaning tailing becomes a reality at any time.
Description
Technical field
It is specifically a kind of to avoid being mixed into tailing in powder the utility model relates to sintered NdFeB production equipment related fields
Airflow milling separation system.
Background technique
Airflow milling is the key equipment for producing sintered NdFeB rare-earth material, has pollution-free, non-oxidation, size distribution good
The features such as, it is widely used in neodymium iron boron production, currently, the airflow milling separation system of all enterprises is all as shown in Fig. 2, gas is ground
Only one the fine powder discharge port of room 1 ', fine powder discharge port are connected with fine powder separate pipeline 2 ', fine powder cyclone separator 3 ', thin in turn
Powder exhaust pipe 4 ' and filter 5 ', main gas circuit only have separate pipeline all the way, need to close separation wheel when spitting tailing, then thick
The tailing of material then passes through fine powder separate pipeline 2 ' via static separation wheel and spues, and the tailing of the thick pellet in part remains in fine powder
It is difficult to clear up in separate pipeline 2 ', fine powder separate pipeline 2 ' is polluted, the separation of subdivision material, common solution after influencing
Method is to need first to open sorting disc sharpener a small amount of fine powder progress pipeline cleaning when batch powder under mill, then will be mixed into tailing
Cleaning fine powder rejoins gas mill room 1 ' and carries out returning mill.Have the disadvantage in that one, to return honed journey fine powder easy to oxidize, return levigate
Powder Particle Size distribution is bad；Two, pipeline cleaning can not fully and completely, lower batch of powder quality of coarse granule remaining influence；Three, fine powder returns
Material increases the security risks such as kindling, burn；Four, returning charge process is time-consuming and laborious.
Utility model content
The utility model aims to solve the problem that the powder that existing sintered neodymium-iron-boron air stream millby is isolated easily is mixed into the technology of tailing and asks
Topic.For this purpose, the utility model proposes a kind of airflow milling separation systems for avoiding being mixed into tailing in powder.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of airflow milling separation system for avoiding being mixed into tailing in powder, including gas grind room, and gas mill room, which is provided with, to be added
Material mouth and fine powder discharge port, the fine powder discharge port have been sequentially communicated fine powder separate pipeline, fine powder cyclone separator, fine powder exhaust
Pipeline, gas mill room have additional a tailing discharge port, and the tailing discharge port is located at the lower section of the separation wheel of gas mill room,
The tailing discharge port has been sequentially communicated tailing separate pipeline, tailing cyclone separator, tailing exhaust pipe；It further include that threeway is closed
Valve is flowed, the outlet of the fine powder exhaust pipe and tailing exhaust pipe is respectively communicated with the two entrances of the three-way converging valve, institute
The outlet for stating three-way converging valve has filter.When three-way converging valve is normally opened, fine powder exhaust pipe is connected to filter, fine powder
Separate pipeline and fine powder exhaust pipe constitute main gas circuit, and qualified powder enters fine powder separate pipeline by separation wheel, revolves through fine powder
Wind separator separates gas and powder, and most powders are settled down to the bottom of fine powder cyclone separator, the fine powder after separation
Gas and micro fine powder are drained at the top of fine powder cyclone separator into fine powder exhaust pipe, and filter is eventually entered into, filtering
Device is further filtered the powder being mingled with is remained in fine powder gas, and gas is finally drained into air compressor machine, and air compressor machine is by gas compression
Enter again from the nozzle of gas mill room after pressurization, so recycles；When three-way converging valve is closed, tailing separate pipeline and tailing exhaust
Pipeline constitutes main gas circuit, and coarse grained tailing enters tailing separate pipeline by tailing discharge port, will through tailing cyclone separator
Gas is separated with tailing, and most tailings are settled down to the bottom of tailing cyclone separator, tailing gas after separation and micro
Tailing is drained at the top of tailing cyclone separator into tailing exhaust pipe, eventually enters into filter, and filter is by tailing gas
Remain the tailing being mingled in body further to filter, gas finally drained into air compressor machine, air compressor machine gas compression is pressurized after again from
The nozzle that gas grinds room enters, and so recycles.Gas mill room described here room is ground using gas well known to sintered NdFeB production field
The difference of structure, gas mill room according to the present invention and existing gas mill room is to be to be additionally arranged a tailing discharge port, specifically
Structure is as shown in the figure, on the one hand gas is ground indoor neodymium iron to generate high pressure gas by the nozzle including being located at bottom, nozzle
Boron raw material is blown upwards, on the other hand so that bulky grain is become fine powder using the collision of high pressure, further includes the separation wheel positioned at top, point
When choosing wheel is opened, only fine powder can be from the gap of separation wheel by exactly utilizing this characteristic reality hence into fine powder discharge port
The separation of the tailing and fine powder of existing bulky grain.Fine powder cyclone separator and tailing cyclone separator described here refers to existing
The structure of cyclone separator well known to the personnel of field mainly utilizes centrifugal force, by fine powder/tailing from fine powder gas/tailing gas
Middle separation.Here for convenience of description, by fine powder discharge port, fine powder separate pipeline, fine powder cyclone separator, fine powder exhaust pipe
It is referred to as fine powder channel, tailing discharge port, tailing separate pipeline, tailing cyclone separator, tailing exhaust pipe are referred to as tail
Expect channel.
The beneficial effects of the utility model are: the utility model provides a kind of airflow milling point for avoiding being mixed into tailing in powder
System is selected, the tailing being made of tailing discharge port, tailing separate pipeline, tailing cyclone separator, tailing exhaust pipe is provided with
Channel, and the outlet in fine powder channel and tailing channel is respectively communicated with the two entrances of three-way converging valve, and three-way converging valve goes out
Mouth connection filter, by the opening and closing in the opening and closing of control three-way converging valve controllable fine powder channel and tailing channel, gas mill room is spat
Without closing separation wheel when tailing, three-way converging valve need to only be closed, tailing channel is connected, realize that tailing successively goes out by tailing
Material mouth, tailing separate pipeline reach tailing cyclone separator, need not move through fine powder channel, will not pollute to fine powder, ensure
The quality for the fine powder isolated；In addition, the production efficiency of powder is substantially increased without returning charge after tailing is spat in gas mill room,
Also make instantaneously to spit that tailing, cleaning tailing becomes a reality at any time simultaneously.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the separation system of the utility model；
Fig. 2 is the structural schematic diagram of the separation system of the prior art.
Specific embodiment
Referring to Fig.1, a kind of airflow milling separation system for avoiding being mixed into tailing in powder of the utility model, including gas grind room
1, gas mill room 1 is provided with feed opening 11 and fine powder discharge port 12, and the fine powder discharge port 12 has been sequentially communicated fine powder separation
Pipeline 2, fine powder cyclone separator 3, fine powder exhaust pipe 4, gas mill room 1 have additional a tailing discharge port 13, the tailing
Discharge port 13 is located at the lower section of the separation wheel 14 of gas mill room 1, and the tailing discharge port 13 has been sequentially communicated tailing separating pipe
Road 5, tailing cyclone separator 6, tailing exhaust pipe 7；It further include three-way converging valve 8, the fine powder exhaust pipe 4 and tailing row
The outlet of feed channel 7 is respectively communicated with the two entrances of the three-way converging valve 8, and the outlet of the three-way converging valve 8 had
Filter 9.When three-way converging valve 8 is normally opened, fine powder exhaust pipe 4 is connected to filter 9, fine powder separate pipeline 2 and fine powder exhaust pipe
Road 4 constitutes main gas circuit, and qualified powder enters fine powder separate pipeline 2 by separation wheel 14, through fine powder cyclone separator 3 by gas with
Powder separate, most powders are settled down to the bottom of fine powder cyclone separator 3, the fine powder gas and micro fine powder after separation from
The top of fine powder cyclone separator 3 is drained into fine powder exhaust pipe 4, eventually enters into filter 9, and filter 9 is by fine powder gas
The middle powder that is mingled with of remaining further filters, and gas is finally drained into air compressor machine, air compressor machine gas compression is pressurized after again from gas
The nozzle 15 for grinding room 1 enters, and so recycles；When three-way converging valve 8 is closed, 7 structure of tailing separate pipeline 5 and tailing exhaust pipe
At main gas circuit, coarse grained tailing enters tailing separate pipeline 5 by tailing discharge port 13, through tailing cyclone separator 6 by gas
Body is separated with tailing, and most tailings are settled down to the bottom of tailing cyclone separator 6, tailing gas and micro tail after separation
Material is drained from the top of tailing cyclone separator 6 into tailing exhaust pipe 7, eventually enters into filter 9, and filter 9 is by tailing
Remain the tailing being mingled in gas further to filter, gas finally drained into air compressor machine, air compressor machine gas compression is pressurized after again
Enter from the nozzle 15 of gas mill room 1, so recycles.Gas mill room 1 described here is using well known to sintered NdFeB production field
Gas grinds 1 structure of room, and the difference of gas mill room 1 according to the present invention and existing gas mill room 1 is only that being additionally arranged a tailing goes out
Material mouth 13, specific structure is as shown in the figure, and the nozzle 15 including being located at bottom, nozzle 15 is to generate high pressure gas, on the one hand
Gas is ground the neodymium iron boron raw material in room 1 to blow upwards, on the other hand so that bulky grain is become fine powder using the collision of high pressure, further includes position
Separation wheel 14 in top, when separation wheel 14 is opened, only fine powder can be from the gap of separation wheel 14 by going out hence into fine powder
Material mouth 12 exactly realizes the separation of the tailing and fine powder of bulky grain using this characteristic.Fine powder cyclone separator 3 described here
Refer to the structure of cyclone separator well known to existing those skilled in the art with tailing cyclone separator 6, mainly utilizes centrifugal force, it will be thin
Powder/tailing is separated from fine powder gas/tailing gas.
Further, the middle part of the tailing exhaust pipe 7, which is communicated with, mends nitrogen channel 71.Due to separation system ordinary circumstance
It is down fine powder channel conductive, the closing of tailing channel, easily hoarding in tailing channel has oxygen, is not easy to be discharged, influences neodymium iron boron raw material
Oxygen environment, mend nitrogen channel 71 oxygen in tailing channel can be discharged, ensure the oxygen environment of neodymium iron boron.
To prevent feed opening 11 from blocking, the feed opening 11 is obliquely installed upwards on the outer wall of gas mill room 1；To prevent tail
Expect that discharge port 13 blocks, and in order to which tailing can smoothly be blown out from tailing discharge port 13, inclination is set tailing discharge port 13 upwards
It is placed on the outer wall of gas mill room 1.Preferably, it is formed between the feed opening 11 and tailing discharge port 13 and gas mill 1 side outer wall of room
15-65 ° of angle, preferably 15 ° or 30 ° or 45 ° or 65 °.
The above specific structure and dimension data are illustrated to the preferred embodiment of the utility model, but this reality
It is not limited to the specific embodiments with novel creation, those skilled in the art are in the premise without prejudice to the spirit of the present invention
Various equivalent deformation or replacement can be also made down, these equivalent deformations or replacement are all contained in the claim of this application and are limited
In fixed range.
Claims (4)
1. a kind of airflow milling separation system for avoiding being mixed into tailing in powder, including gas mill room (1), gas mill room (1) setting
There are feed opening (11) and fine powder discharge port (12), the fine powder discharge port (12) has been sequentially communicated fine powder separate pipeline (2), fine powder
Cyclone separator (3), fine powder exhaust pipe (4), it is characterised in that: gas mill room (1) has additional a tailing discharge port (13),
The tailing discharge port (13) is located at the lower section of the separation wheel (14) of gas mill room (1), and the tailing discharge port (13) is successively
It is communicated with tailing separate pipeline (5), tailing cyclone separator (6), tailing exhaust pipe (7)；It further include three-way converging valve (8),
The outlet of the fine powder exhaust pipe (4) and tailing exhaust pipe (7) be respectively communicated with the three-way converging valve (8) two enter
Mouthful, the outlet of the three-way converging valve (8) has filter (9).
2. a kind of airflow milling separation system for avoiding being mixed into tailing in powder according to claim 1, it is characterised in that: institute
It states to be communicated in the middle part of tailing exhaust pipe (7) and mends nitrogen channel (71).
3. a kind of airflow milling separation system for avoiding being mixed into tailing in powder according to claim 1, it is characterised in that: institute
It states feed opening (11) and tailing discharge port (13) is all obliquely installed upwards on the outer wall of gas mill room (1).
4. a kind of airflow milling separation system for avoiding being mixed into tailing in powder according to claim 3, it is characterised in that: institute
It states and forms 15-65 ° of angle between feed opening (11) and tailing discharge port (13) and gas mill room (1) side outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821164129.6U CN208695217U (en) | 2018-07-23 | 2018-07-23 | A kind of airflow milling separation system for avoiding being mixed into tailing in powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821164129.6U CN208695217U (en) | 2018-07-23 | 2018-07-23 | A kind of airflow milling separation system for avoiding being mixed into tailing in powder |
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| CN208695217U true CN208695217U (en) | 2019-04-05 |
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| CN201821164129.6U Active CN208695217U (en) | 2018-07-23 | 2018-07-23 | A kind of airflow milling separation system for avoiding being mixed into tailing in powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345508A (en) * | 2022-03-18 | 2022-04-15 | 山西金山磁材有限公司 | Jet mill separation device and method capable of improving powder particle size distribution |
-
2018
- 2018-07-23 CN CN201821164129.6U patent/CN208695217U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345508A (en) * | 2022-03-18 | 2022-04-15 | 山西金山磁材有限公司 | Jet mill separation device and method capable of improving powder particle size distribution |
| CN114345508B (en) * | 2022-03-18 | 2022-06-07 | 山西金山磁材有限公司 | Jet mill separation device and method capable of improving powder particle size distribution |
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