CN209271613U - Fluidized bed air flow crushing device and fluid bed airflow milling production line - Google Patents
Fluidized bed air flow crushing device and fluid bed airflow milling production line Download PDFInfo
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- CN209271613U CN209271613U CN201820937181.4U CN201820937181U CN209271613U CN 209271613 U CN209271613 U CN 209271613U CN 201820937181 U CN201820937181 U CN 201820937181U CN 209271613 U CN209271613 U CN 209271613U
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Abstract
The utility model discloses a kind of fluidized bed air flow crushing device and fluid bed airflow milling production line, crushing cylinder (2.1) including being located at lower part, it is located at the classification cylinder (2.2) on top, the side wall for crushing cylinder (2.1) is circumferentially spaced to be equipped with multiple Laval nozzles (2.3), the classification cylinder (2.2) is equipped with grading wheel (2.4), it is fixed on the driving mechanism of classification cylinder (2.2) side, it is fixed on the discharge barrel (2.6) of classification cylinder (2.2) other side, the driving mechanism includes shaft (2.5), the grading wheel (2.4) includes fixing end (2.4.1) and free end (2.4.2), the fixing end (2.4.1) is fixed on shaft (2.5), the free end (2.4.2) and discharge barrel (2 .6 dynamic sealing) is realized by the first labyrinth air-tight structure.The utility model provide a kind of crush efficiency is high, in fluidized bed air flow crushing device good seal performance fluidized bed air flow crushing device and fluid bed airflow milling production line.
Description
Technical field
The utility model relates to dry type material fining Crushing of Ultrafine technical fields, and in particular to a kind of fluid bed airflow milling dress
It sets and fluid bed airflow milling production line.
Background technique
Fluid bed airflow milling production line be it is a kind of the fine equipment of dry type material fining is realized with supersonic airstream,
It is widely used in a variety of industries such as special cermacis, semiconductor, pigment, medicine, powder food product, cosmetics.
Dry air or inert gas are used in fluidized bed air flow crushing device, form supersonic gas through Laval nozzle
Stream injects pulverizing chamber, makes material in fluidization, and accelerated material converges in the jet-stream wind joint of multiple nozzles, generates acute
Strong collision, friction, shearing and reach the ultra-fine grindings of material particles.
The air-flow that smashed material is raised is delivered in grading wheel graded region, is taken out in grading wheel centrifugal force and air-introduced machine
Under the action of power, the separation of thickness powder is realized, coarse powder returns in pulverization cylinder body according to the gravity of itself to be continued to crush, and qualified is thin
Powder enters cyclone collector with air-flow, and fine dust is collected by sack cleaner, and the gas of purification is discharged by air-introduced machine.
Grading wheel includes fixing end and free end, and the shaft of fixing end and driving mechanism is fixed, between free end and discharge barrel
Gap cooperation, when crushing production line operation grading wheel high-speed rotation, powder can in the gap of freedom of entry end and discharge barrel until
Blocking is filled up, cause grading wheel rotation slack-off or even can not be rotated, influences the grading effect of grading wheel, and run in a period of time
After need to shut down equipment, clean the powder between grading wheel and discharge barrel, cleaning process is complicated, seriously affects and crushes production line
Working efficiency.
Summary of the invention
The technical problem to be solved by the utility model is to provide close in a kind of crush efficiency height, fluidized bed grinding device
Sealing property good fluidized bed grinding device and fluid bed airflow milling production line.
The technical scheme in the invention for solving the above technical problem are as follows: a kind of fluidized bed grinding device, including be located at
The crushing cylinder of lower part, the classification cylinder for being located at top, the side wall for crushing cylinder is circumferentially spaced to be equipped with multiple Lavalles
Nozzle, it is described classification cylinder be equipped with grading wheel, be fixed on classification cylinder side driving mechanism, be fixed on classification cylinder it is another
The discharge barrel of side, the driving mechanism include shaft, and the grading wheel includes fixing end and free end, and the fixing end is fixed on
In shaft, the free end and discharge barrel pass through the first labyrinth air-tight structure realization dynamic sealing, first labyrinth hermetic seal
Structure includes spaced multiple first bulge loops being located on the end face of free end, is located on discharge barrel and multiple first bulge loops
It is arranged in a one-to-one correspondence and clearance fit is to constitute multiple first annular grooves of mazy airflow channel, the is equipped in the discharge barrel
One air intake passage, first air intake passage one end are connected to the first annular groove bottom surface, the first air intake passage other end and outer
The connection of portion's gas source.
It is crushed compared with the prior art, the advantages of the utility model are: external air source supplies inert gas to fluidized bed
The Laval nozzle of device, inert gas form supersonic airstream through Laval nozzle and inject crushing cylinder, make material in fluidised form
Change, accelerated material converges in the jet-stream wind joint of multiple nozzles, generate violent collision, friction, shearing and reach
The ultra-fine grinding of material particles, in fluidized bed grinding device, on multiple first bulge loops and discharge barrel of the free end of grading wheel
Multiple first annular grooves be arranged in a one-to-one correspondence and constitute mazy airflow channel, the inert gas of external air source passes through the first air inlet
Channel, which enters in airflow channel, carries out lasting gas supply, so that powder is not easily accessible between grading wheel and discharge barrel
In gap, dynamic sealing is realized with discharge barrel when guaranteeing grading wheel rotation, and sealing effect is good, to guarantee that fluid bed airflow milling is raw
The production efficiency of producing line.
As a kind of improvement of the utility model, the discharge barrel is moved close by the free end of the first seal disc and grading wheel
Envelope, first annular groove are located on the first seal disc, and cavity, the cavity and the first sealing are recessed in the discharge barrel end face
Disk constitutes air storage chamber, is equipped with the first air inlet hole of connection the first annular groove bottom surface and air storage chamber in first seal disc, it is described go out
The second air inlet hole of connection air storage chamber and external air source is equipped in barrel, first air inlet hole and the second air inlet hole constitute first
Air intake passage, by the improvement, air storage chamber can be with the gas supply air pressure fluctuation of filtering external gas source, to guarantee that gas can continue
Ground supplies the airflow channel between the first bulge loop and the first annular groove, to guarantee the dynamic sealing of free end when grading wheel rotation.
As the utility model there are also a kind of improvement, the diameter of second air inlet hole is greater than the straight of the first air inlet hole
Diameter is further ensured that external air source to air intake passage sustainedly and stably supply gas by the improvement.
As the utility model there are also a kind of improvement, the classification cylinder inboard wall is equipped with the second seal disc, the classification
The fixing end of wheel and the second seal disc pass through the second labyrinth air-tight structure realization dynamic sealing, second labyrinth air-tight structure
Including be located on the end face of fixing end spaced multiple second bulge loops, be located in the second sealing side surface and multiple second
Bulge loop is arranged in a one-to-one correspondence and clearance fit is to constitute multiple second annular grooves of mazy airflow channel, second seal disc
The second air intake passage is constituted with shaft clearance fit, second air intake passage connect with external air source, by the improvement, by
In the fixing end of grading wheel it is opposite be classified cylinder be still it is movable, there are gaps, therefore are arranged between grading wheel and classification cylinder
Second labyrinth air-tight structure, external air source enter the air-flow that the second bulge loop and the second annular groove are constituted by the second air intake passage and lead to
In road, enter the gap between grading wheel and classification cylinder to avoid powder.
As the utility model there are also a kind of improvement, the driving mechanism includes being located in shaft to be used for and bearing inner race
The axle sleeve to offset, the classification cylinder body outer wall are equipped with the third seal disc being set in shaft, the third seal disc and axle sleeve
Between by third labyrinth air-tight structure realize dynamic sealing, third labyrinth air-tight structure include be located at third seal disc
End face on spaced multiple third bulge loops, be located on end face of shaft bush be arranged in a one-to-one correspondence with multiple third bulge loops and
To constitute multiple third annular grooves of mazy airflow channel, the third seal disc and shaft clearance fit constitute for gap cooperation
Three air intake passages, the third air intake passage are connect with external air source, by the improvement, still due to the opposite classification cylinder of shaft
Be it is movable, there are gap, powder may be sprayed outside assorting cylinder body by gap, therefore held in shaft upper rotary shaft and set on inner ring
Third labyrinth air-tight structure is set between the axle sleeve set and classification cylinder, external air source enters third by third air intake passage
In the airflow channel that bulge loop and third annular groove are constituted, is sprayed and be classified by shaft and the gap being classified between cylinder to avoid powder
Outside cylinder.
As the utility model there are also a kind of improvement, the third seal disc is equipped with third air inlet, the outside
Gas source is connected to by third air inlet with the second inlet channel and third inlet channel, and by the improvement, external air source is logical
Third air inlet is crossed to the second air intake passage and third air intake passage while being supplied, internal pipeline structure is reduced, reduces manufacture
Cost.
As the utility model there are also a kind of improvement, the cross-sectional shape of the cavity for crushing cylinder is circle, institute
State the cavity cross-sectional shape of classification cylinder be it is rectangular, it is described equipped with transition cylinder between the crushings cylinder and classification cylinder
The inner wall of transition cylinder be by rounded transitional to rectangular smooth inner wall, by the improvement, reduce powder from crush cylinder into
Enter to be classified the resistance of cylinder, improve efficiency.
As the utility model there are also a kind of improvement, the cyclone collector includes one cyclonic collector and second level rotation
Wind collector, by the improvement, one cyclonic collector, second level cyclone collector are thin for collecting different size of finished product
Powder.
As the utility model there are also a kind of improvement, the crushings cylinder top is equipped with observation window, by the improvement,
Observation window feeds for observing the broken residual volume of feed powder, manual intervention in pulverization cylinder body.
The utility model solves the above problems used another technical solution are as follows: a kind of fluid bed airflow milling production
Line, it includes fluidized bed grinding device, and the external air source is inert gas feeder, the fluid bed airflow milling production
Line further includes cyclone collector, sack cleaner, air-introduced machine, conduit, and the conduit is by inert gas feeder, fluidized bed powder
Crushing device, cyclone collector, sack cleaner, air-introduced machine sequentially connect.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram.
Fig. 2 is the utility model fluidized bed grinding device the schematic diagram of the section structure.
Fig. 3 is Fig. 2A-A section partial structural diagram.
As shown in the figure: 1- inert gas feeder, 2- fluidized bed grinding device, 2.1- crush cylinder, 2.2- assorting cylinder
Body, 2.3- Laval nozzle, 2.4- grading wheel, 2.4.1- fixing end, the second bulge loop of 2.4.1.1-, the free end 2.4.2-,
2.4.2.1- the first bulge loop, 2.5- shaft, 2.6- discharge barrel, the first annular groove of 2.6.1-, 2.6.2- air storage chamber, 2.6.3- second
Air inlet hole, the first seal disc of 2.7-, the first air inlet hole of 2.7.1-, the second seal disc of 2.8-, the second annular groove of 2.8.1-, 2.8.2-
Second air intake passage, 2.9- axle sleeve, 2.9.1- third annular groove, 2.10- third seal disc, 2.10.1- third bulge loop, 2.10.2-
Third air intake passage, 2.10.3- third air inlet, 2.11- transition cylinder, 2.12- observation window, 3- one cyclonic collector, 4-
Second level cyclone collector, 5- sack cleaner, 6- air-introduced machine, 7- conduit.
Specific embodiment
The embodiments of the present invention are further described with reference to the accompanying drawing.
As shown in Figure 1-3,
A kind of fluid bed airflow milling production line, including sequentially connected by conduit 7 inert gas feeder 1, fluidisation
Bed grinding device 2, cyclone collector, sack cleaner 5, air-introduced machine 6, the fluidized bed grinding device 2 include being located at lower part
The classification cylinder 2.2 for crushing cylinder 2.1, being located at top, the side wall for crushing cylinder 2.1 is circumferentially spaced to be equipped with multiple Bearing scores
That nozzle 2.3, the classification cylinder 2.2 are equipped with grading wheel 2.4, the driving mechanism for being fixed on classification 2.2 side of cylinder, fixation
Discharge barrel 2.6 in classification 2.2 other side of cylinder, the driving mechanism includes shaft 2.5, and the grading wheel 2.4 includes fixing
2.4.1 and free end 2.4.2, the fixing end 2.4.1 is held to be fixed in shaft 2.5, the free end 2.4.2 and discharge barrel
2.6 realize dynamic sealing by the first labyrinth air-tight structure, and first labyrinth air-tight structure includes being located at free end 2.4.2
End face on spaced multiple first bulge loop 2.4.2.1, be located on discharge barrel 2.6 and multiple first bulge loop 2.4.2.1
It is arranged in a one-to-one correspondence and clearance fit is to constitute multiple first annular groove 2.6.1 of mazy airflow channel, the discharge barrel 2.6
It is inside equipped with the first air intake passage, first air intake passage one end is connected to the first bottom surface annular groove 2.6.1, and first air inlet is logical
The road other end is connected to inert gas feeder 1, wherein inert gas feeder 1, cyclone collector, sack cleaner
5, air-introduced machine 6, cyclone collector are used to collect the finished product fine powder of different-grain diameter size, and sack cleaner 5 is for collecting fine powder
Dirt, purifying exhaust gas are the conventional prior art, therefore details are not described herein, and driving mechanism can be driving source, can also
It is the intermediate transmission mechanism driven by driving source, also due to relatively conventional, therefore details are not described herein.
Wherein, the side wall of multiple Laval nozzles 2.3 usually edge crushing cylinder 2.1 is circumferentially-spaced is uniformly distributed.
Wherein, free end 2.4.2 dynamic sealing of the discharge barrel 2.6 by the first seal disc 2.7 and grading wheel 2.4, institute
It states the first annular groove 2.6.1 to be located on the first seal disc 2.7, cavity, the cavity and is recessed in 2.6 end face of discharge barrel
One seal disc 2.7 constitutes air storage chamber 2.6.2, is equipped with the first bottom surface annular groove 2.6.1 of connection and gas storage in first seal disc 2.7
The first air inlet hole 2.7.1 of room 2.6.2, the discharge barrel 2.6 is interior to be equipped with connection air storage chamber 2.6.2 and inert gas gas supply dress
The second the air inlet hole 2.6.3, the first air inlet hole 2.7.1 and the second air inlet hole 2.6.3 for setting 1 constitutes the first air intake passage.
Wherein, the diameter of the second air inlet hole 2.6.3 is greater than the diameter of the first air inlet hole 2.7.1.
Wherein, 2.2 inner wall of classification cylinder is equipped with the second seal disc 2.8, the fixing end 2.4.1 of the grading wheel 2.4
Dynamic sealing is realized by the second labyrinth air-tight structure with the second seal disc 2.8, second labyrinth air-tight structure includes setting
Spaced multiple second bulge loop 2.4.1.1 on the end face of fixing end 2.4.1, it is located on 2.8 end face of the second seal disc
It is arranged in a one-to-one correspondence with multiple second bulge loop 2.4.1.1 and clearance fit is to constitute multiple second rings of mazy airflow channel
Slot 2.8.1, second seal disc 2.8 constitute the second air intake passage 2.8.2, second air inlet with 2.5 clearance fit of shaft
Channel 2.8.2 is connect with inert gas feeder 1.
Wherein, the driving mechanism includes being located at the axle sleeve 2.9 in shaft 2.5 being used to offset with bearing inner race, and described point
Grade 2.2 outer wall of cylinder is equipped with the third seal disc 2.10 being set in shaft 2.5, the third seal disc 2.10 and axle sleeve 2.9
Between by third labyrinth air-tight structure realize dynamic sealing, third labyrinth air-tight structure include be located at third seal disc
Spaced multiple third bulge loop 2.10.1 on 2.10 end face, are located on 2.9 end face of axle sleeve and multiple third bulge loops
2.10.1 it is arranged in a one-to-one correspondence and clearance fit is to constitute multiple third annular groove 2.9.1 of mazy airflow channel, described
Three seal discs 2.10 and 2.5 clearance fit of shaft constitute third air intake passage 2.10.2, the third air intake passage 2.10.2 with
Inert gas feeder 1 connects.
Wherein, the third seal disc 2.10 is equipped with third air inlet 2.10.3, and the inert gas feeder 1 is logical
Third air inlet 2.10.3 is crossed to be connected to the second air intake passage 2.8.2 and third air intake passage 2.10.2.
Wherein, the cross-sectional shape of the cavity for crushing cylinder 2.1 is circle, and the cavity of the classification cylinder 2.2 is horizontal
Cross sectional shape be it is rectangular, equipped with transition cylinder 2.11 between the crushings cylinder 2.1 and classification cylinder 2.2, the transition cylinder
2.11 inner wall is by rounded transitional to rectangular smooth inner wall.
Wherein, the cyclone collector includes one cyclonic collector 3 and second level cyclone collector 4.
Wherein, 2.1 top of crushing cylinder is equipped with observation window 2.12.
As shown in figure 3, the arrow route of " X " mark is the inert gas of inert gas feeder 1 from the second air inlet hole
2.6.3 enter the gas supply route of the first labyrinth air-tight structure through the first air inlet hole 2.7.1；The arrow route of " Y " mark is lazy
Property gas feeder 1 inert gas enter the second labyrinth gas through the second air intake passage 2.8.2 from third air inlet 2.10.3
The gas supply route of sealing structure；The arrow route of " Z " mark is the inert gas of inert gas feeder 1 from third air inlet
2.10.3 enter the gas supply route of third labyrinth air-tight structure through third air intake passage 2.10.2.
Only the most preferred embodiment of the utility model is described above, but is not to be construed as the limit to claim
System.The utility model is not only limited to above embodiments, and specific structure is allowed to vary.It is all in the utility model independent right
It is required that protection scope in made various change in scope of protection of the utility model.
Claims (9)
1. a kind of fluidized bed air flow crushing device, including the crushing cylinder (2.1) for being located at lower part, the classification cylinder that is located at top
(2.2), the side wall for crushing cylinder (2.1) is circumferentially spaced is equipped with multiple Laval nozzles (2.3), the classification cylinder
(2.2) grading wheel (2.4) are equipped with, the driving mechanism for being fixed on classification cylinder (2.2) side, are fixed on classification cylinder (2.2)
The discharge barrel (2.6) of the other side, the driving mechanism include shaft (2.5), and the grading wheel (2.4) includes fixing end
(2.4.1) and free end (2.4.2), the fixing end (2.4.1) are fixed on shaft (2.5), it is characterised in that: the freedom
(2.4.2) and discharge barrel (2.6) is held to realize dynamic sealing, first labyrinth air-tight structure by the first labyrinth air-tight structure
Spaced multiple first bulge loops (2.4.2.1) on end face including being located at free end (2.4.2) are located at discharge barrel
(2.6) it is arranged in a one-to-one correspondence on multiple first bulge loops (2.4.2.1) and clearance fit is to constitute mazy airflow channel
Multiple first annular grooves (2.6.1), are equipped with the first air intake passage in the discharge barrel (2.6), first air intake passage one end with
The connection of the first annular groove bottom surface (2.6.1), the first air intake passage other end are connected to external air source.
2. fluidized bed air flow crushing device according to claim 1, it is characterised in that: the discharge barrel (2.6) passes through the
Free end (2.4.2) dynamic sealing of one seal disc (2.7) and grading wheel (2.4), it is close that first annular groove (2.6.1) is located at first
In closing disk (2.7), cavity is recessed in discharge barrel (2.6) end face, the cavity and the first seal disc (2.7) constitute gas storage
Room (2.6.2) is equipped with the of connection the first annular groove bottom surface (2.6.1) and air storage chamber (2.6.2) in first seal disc (2.7)
One air inlet hole (2.7.1), interior the second air inlet hole for being equipped with connection air storage chamber (2.6.2) and external air source of the discharge barrel (2.6)
(2.6.3), first air inlet hole (2.7.1) and the second air inlet hole (2.6.3) constitute the first air intake passage.
3. fluidized bed air flow crushing device according to claim 2, it is characterised in that: second air inlet hole (2.6.3)
Diameter be greater than the first air inlet hole (2.7.1) diameter.
4. fluidized bed air flow crushing device according to claim 1, it is characterised in that: classification cylinder (2.2) inner wall
Equipped with the second seal disc (2.8), the fixing end (2.4.1) of the grading wheel (2.4) and the second seal disc (2.8) pass through the second fan
Palace air-tight structure realizes dynamic sealing, and second labyrinth air-tight structure includes being located on the end face of fixing end (2.4.1)
Spaced multiple second bulge loops (2.4.1.1) are located on the second seal disc (2.8) end face and multiple second bulge loops
(2.4.1.1) is arranged in a one-to-one correspondence and clearance fit is to constitute multiple second annular grooves (2.8.1) of mazy airflow channel, institute
It states the second seal disc (2.8) and shaft (2.5) clearance fit constitutes the second air intake passage (2.8.2), second air intake passage
(2.8.2) is connect with external air source.
5. fluidized bed air flow crushing device according to claim 4, it is characterised in that: the driving mechanism includes being located to turn
Axle sleeve (2.9) on axis (2.5) for offseting with bearing inner race, classification cylinder (2.2) outer wall are equipped with and are set in shaft
(2.5) the third seal disc (2.10) on, it is airtight by third labyrinth between the third seal disc (2.10) and axle sleeve (2.9)
Seal structure realizes dynamic sealing, and third labyrinth air-tight structure includes the interval being located on the end face of third seal disc (2.10)
The multiple third bulge loops (2.10.1) being arranged are located on axle sleeve (2.9) end face and correspond with multiple third bulge loops (2.10.1)
It is arranged and clearance fit is to constitute multiple third annular grooves (2.9.1) of mazy airflow channel, the third seal disc
(2.10) with shaft (2.5) clearance fit constitute third air intake passage (2.10.2), the third air intake passage (2.10.2) with
External air source connection.
6. fluidized bed air flow crushing device according to claim 5, it is characterised in that: on the third seal disc (2.10)
Equipped with third air inlet (2.10.3), the external air source passes through third air inlet (2.10.3) and the second air intake passage
(2.8.2) is connected to third air intake passage (2.10.2).
7. fluidized bed air flow crushing device according to claim 1, it is characterised in that: the chamber for crushing cylinder (2.1)
The cross-sectional shape of body is circle, and the cavity cross-sectional shape of classification cylinder (2.2) is rectangular, the crushing cylinder
(2.1) transition cylinder (2.11) are equipped between classification cylinder (2.2), the inner wall of the transition cylinder (2.11) is by round mistake
It crosses to rectangular smooth inner wall.
8. fluidized bed air flow crushing device according to claim 1, it is characterised in that: crushing cylinder (2.1) top
Equipped with observation window (2.12).
9. a kind of fluid bed airflow milling production line, it is characterised in that: it includes described in any one of the claims 1~8
Fluidized bed air flow crushing device (2), the external air source be inert gas feeder (1), the fluid bed airflow milling
Production line further includes cyclone collector, sack cleaner (5), air-introduced machine (6), conduit (7), and the conduit (7) is by inert gas
Feeder (1), fluidized bed grinding device (2), cyclone collector, sack cleaner (5), air-introduced machine (6) sequentially connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820937181.4U CN209271613U (en) | 2018-06-15 | 2018-06-15 | Fluidized bed air flow crushing device and fluid bed airflow milling production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820937181.4U CN209271613U (en) | 2018-06-15 | 2018-06-15 | Fluidized bed air flow crushing device and fluid bed airflow milling production line |
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| Publication Number | Publication Date |
|---|---|
| CN209271613U true CN209271613U (en) | 2019-08-20 |
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ID=67597614
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820937181.4U Active CN209271613U (en) | 2018-06-15 | 2018-06-15 | Fluidized bed air flow crushing device and fluid bed airflow milling production line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058666A (en) * | 2020-09-21 | 2020-12-11 | 连云港市沃鑫高新材料有限公司 | Silicon carbide micro-powder grading equipment |
| CN115888934A (en) * | 2022-11-18 | 2023-04-04 | 秦皇岛曼国化工机械有限公司 | Fluidized bed jet mill pulverizer |
| CN116020633A (en) * | 2023-03-30 | 2023-04-28 | 兮然科技(江苏)股份有限公司 | High-temperature air flow mill |
-
2018
- 2018-06-15 CN CN201820937181.4U patent/CN209271613U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058666A (en) * | 2020-09-21 | 2020-12-11 | 连云港市沃鑫高新材料有限公司 | Silicon carbide micro-powder grading equipment |
| CN115888934A (en) * | 2022-11-18 | 2023-04-04 | 秦皇岛曼国化工机械有限公司 | Fluidized bed jet mill pulverizer |
| CN116020633A (en) * | 2023-03-30 | 2023-04-28 | 兮然科技(江苏)股份有限公司 | High-temperature air flow mill |
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