CN108371996A - Ball milling equipment - Google Patents
Ball milling equipment Download PDFInfo
- Publication number
- CN108371996A CN108371996A CN201810468113.2A CN201810468113A CN108371996A CN 108371996 A CN108371996 A CN 108371996A CN 201810468113 A CN201810468113 A CN 201810468113A CN 108371996 A CN108371996 A CN 108371996A
- Authority
- CN
- China
- Prior art keywords
- cavity
- ball
- grinding machine
- outer housing
- ball grinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000000498 ball milling Methods 0.000 title abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 46
- 238000000227 grinding Methods 0.000 claims description 35
- 239000011261 inert gas Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 25
- 229910052757 nitrogen Inorganic materials 0.000 claims description 23
- 239000012809 cooling fluid Substances 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 claims description 12
- 238000003801 milling Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000012806 monitoring device Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 239000007769 metal material Substances 0.000 abstract description 7
- 239000011858 nanopowder Substances 0.000 abstract description 7
- 238000003756 stirring Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000010923 batch production Methods 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000003701 mechanical milling Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010054949 Metaplasia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/163—Stirring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1805—Monitoring devices for tumbling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1815—Cooling or heating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention is suitable for the technical field of material preparation, and provides ball milling equipment, which comprises a ball milling system and a primary cooling system for cooling the ball milling system; the ball milling system comprises a motor, a stirring shaft driven by the motor to rotate, a stirring paddle connected to one end of the stirring shaft, which is far away from the motor, a ball milling tank with a first cavity and an outer shell with a second cavity, wherein the ball milling tank is positioned in the second cavity; the primary cooling system is connected to the outer housing and cools the second cavity. The second cavity is cooled by the primary cooling system, so that the first cavity of the ball milling tank is kept at a low temperature, some metal materials or high polymer materials and the like can be changed from toughness to brittleness at the low temperature, and the nano-powder can be effectively processed to be nano-grade or even higher grade during ball milling, is particularly suitable for preparing nano-powder of materials with good plasticity, and is also suitable for large-scale batch production.
Description
Technical field
The invention belongs to technical field of material, more particularly to a kind of ball-grinding machine.
Background technology
Nano-powder material and quanta point material are important objects prepared by modern material, but since powder body material has
Great specific surface, it is easy to reunite, reduce use scope and application performance.There are many means for preparing powder, such as
Ball-milling method, spray-on process, coprecipitation, hydro-thermal method etc., but the method for the nano-powder of high quality can be prepared on a large scale not
It is more.Wherein ball-milling method can prepare nano level powder with mass, but be limited only to the preparation of hard brittle material nano-powder, right
High molecular material, metal material and the preferable material of some other plasticity are difficult then to be milled to nanometer, even lower rank.
Therefore, it is necessary to which providing a kind of can effectively realize the preparation of nanometer and nanometer with subordinate's material or composite granule
Ball-grinding machine.
Invention content
The purpose of the present invention is to provide a kind of ball-grinding machines, it is intended to solve ball-milling method in the prior art and be difficult to prepare high score
The technical issues of nanometer grade powder of sub- material, metal material and the preferable material of some plasticity.
The invention is realized in this way a kind of ball-grinding machine, including milling system and for being cooled down to milling system
Level-one cooling system；The milling system includes motor, drives the agitating shaft of rotation by the motor, is connected to the stirring
The agitating paddle, the ball grinder with the first cavity and the outer housing with the second cavity of the one end of axis far from motor, it is described to stir
It mixes axis one end and the agitating paddle far from motor to be respectively positioned in the first cavity of the ball grinder, the ball grinder and connection
It is located in second cavity in a part of agitating shaft of ball grinder；The level-one cooling system is connected to the outer housing and right
Second cavity is cooled down.
Further, the level-one cooling system includes refrigeration machine and heat-exchange device, and the heat-exchange device is set to institute
It states in the second cavity, the refrigeration machine is set to the outside of the outer housing.
Further, the ball-grinding machine further include with the tank connected two level cooling system of the ball milling, the two level is cold
But system includes that the cooling fluid generating means of cooling fluid is provided to first cavity.
Further, the cooling fluid generating means is liquid nitrogen generating means, and the cooling fluid is liquid nitrogen.
Further, the ball-grinding machine further includes the compression system being connect with the outer housing, the compression system packet
Inert gas generator and vacuum plant are included, the vacuum plant is set to outside the outer housing, for second chamber
Body vacuumizes, and the inert gas generator into second cavity for providing inert gas.
Further, the compression system is additionally coupled to the ball grinder, and the vacuum plant is additionally operable to described first
Cavity vacuumizes, and the inert gas generator is additionally operable to provide inert gas into first cavity.
Further, supporting rack is equipped in second cavity, support frame as described above is equipped with card slot, the ball grinder engaging
In on the card slot and being fixed on support frame as described above.
Further, at least one layer of thermal insulation material of the outer housing inner wall coating or the outer housing include vacuum layer.
Further, the ball-grinding machine further include be set to outside the outer housing for first cavity and/or
The pressure monitoring device that pressure in second cavity is monitored.
Further, the ball-grinding machine further include be set to outside the outer housing for first cavity and/or
The device for monitoring temperature that temperature in second cavity is monitored.
The advantageous effect of ball-grinding machine provided by the invention is：By level-one cooling system to second outside ball grinder
Cavity is cooled down so that kept in the second cavity and the first cavity low temperature, some metal materials or high molecular material and its
His preferable material of some plasticity etc. can occur at low temperature from toughness to brittle transformation, and when ball milling can effectively be processed
It is even more advanced to nanoscale, nano-powder especially suitable for the reluctant material with good plasticity of conventional method
It prepares, while being also applied for large-scale batch production.In addition, the structure of the ball-grinding machine is simple, manufacture is easy, grinding efficiency
It is high and environmental-friendly, the temperature in the first cavity is changed by the control of level-one cooling system so that cryogenic temperature section is wide
To applied widely.
Description of the drawings
Fig. 1 is the construction module schematic diagram of ball-grinding machine provided in an embodiment of the present invention.
The meaning marked in figure is：
100- ball-grinding machines, 1- milling systems, 11- motors, 12- agitating shafts, 13- agitating paddles, 14- ball grinders, 141-
One cavity, 142- ball-milling mediums, 143- explosion-proof valves, 15- outer housings, the second cavitys of 151-, 152- supporting racks, 153- card slots, 2-
Level-one cooling system, 21- refrigeration machines, 22- heat-exchange devices, 4- two level cooling systems, 41- liquid nitrogen generating means, 42- third pipes
Road, 43- third flow control valves, 5- compression systems, 51- inert gas generators, 52- vacuum plants, the first pipelines of 511-,
512- first flow control valves, the second pipelines of 513-, 514- second flow control valves, 6- device for monitoring temperature, the first temperature of 61-
Sensor, 62- second temperature sensors, 63- Temperature Treatment modules, 7- pressure monitoring devices, 71- first pressure sensors, 72-
Second pressure sensor, 73- pressure treatment modules.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or
It is connected on another component.When a component is known as " being connected to " another component, it can be directly or indirectly
It is connected on another component.The orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of describing, not indicating or implying the indicated device or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore should not be understood as the limitation to this patent.Term " first ",
" second " is used merely to facilitate description purpose, is not understood to indicate or imply relative importance or implicitly indicates technical characteristic
Quantity.The meaning of " plurality " is two or more, unless otherwise specifically defined.
In order to illustrate technical solutions according to the invention, it is described in detail below in conjunction with specific accompanying drawings and embodiments.
Referring to Fig. 1, the embodiment of the present invention provides a kind of ball-grinding machine 100, including milling system 1 and for ball milling system
System 1 carries out cooling level-one cooling system 2；Milling system 1 includes motor 11, the agitating shaft 12 of rotation is driven by motor 11, is connected
It is connected to agitating paddle 13 of the agitating shaft 12 far from 11 one end of motor, the ball grinder 14 with one first cavity 141 and with second
The outer housing 15 of cavity 151.Agitating shaft 12 one end and agitating paddle 13 far from motor 11 are located at the first cavity of ball grinder 14
In 141, ball grinder 14 and a part of agitating shaft 12 for being connected to ball grinder 14 are located in the second cavity 151 of outer housing 15；One
Grade cooling system 2 is connected to outer housing 15 and is cooled down to the second cavity 151.
The progress of ball-grinding machine provided by the invention compared with the existing technology is：
Ball grinder 14 is arranged in the second cavity 151, and the heat generated by ball milling in the first cavity 141 passes through ball grinder
14 are transferred to the second cavity 151, are cooled down to the second cavity 151 by level-one cooling system 2, enable to the first cavity
Low temperature is kept in 141, some metal materials or high molecular material and other some other preferable materials of plasticity etc. are in low temperature
Under can occur from toughness to brittle transformation, it is even more advanced that when ball milling, can effectively be machined to nanoscale, particularly suitable
In the preparation of the nano-powder of the reluctant material with good plasticity of conventional method, while being also applied for extensive batch
Metaplasia is produced.In addition, the structure of the ball-grinding machine is simple, manufacture is easy, grinding efficiency is high and environmental-friendly, pass through level-one cooling system
System controls to change the temperature in the first cavity so that cryogenic temperature section is wide to applied widely.
In Fig. 1, ball grinder 14 is equipped with the first opening portion (not shown), and agitating shaft 12 passes through first opening portion to make
It is connected to one end of motor 11 and is located at outside ball grinder 14, and the one end and agitating paddle 13 for being connected to agitating paddle 13 are respectively positioned on
In first cavity 141 of ball grinder 14.Dynamic sealing is used at first opening portion to ensure ball in 12 rotary course of agitating shaft
Air-tightness in first cavity 141 of grinding jar 14.
Ball grinder 14 is equipped with first charging aperture (not shown), can be into ball grinder 14 by opening the first charging aperture
It is put into pending material and ball-milling medium 142.Outer housing 15 be equipped with second charging aperture (not shown), by open this second into
Pending material or ball-milling medium 142 can be added in material mouth by first charging aperture into ball grinder 14.It is also set on outer housing 15
There are the second opening portion (not shown), agitating shaft 12 to be located at shell across second oral area to make it be connected to one end of motor 11
Outside body 15, and it is connected to one end of ball grinder 14 and ball grinder 14 is respectively positioned in the second cavity 151.Similarly, this
Dynamic sealing is used at two opening portions to ensure the air-tightness in 12 rotary course of agitating shaft in the second cavity 151.
Supporting rack 152 is equipped in second cavity 151, supporting rack 152 is equipped with card slot 153, and ball grinder 14 passes through card slot 153
It can be securely fixed on supporting rack 152, to which the firm of entire milling system 1 can be kept in mechanical milling process.
Level-one cooling system 2 includes refrigeration machine 21 and heat-exchange device 22, and refrigeration machine 21 is set to the outside of outer housing 15, heat
Switch 22 is set in the second cavity 151 outside ball grinder 14.Outer housing 15 is equipped with third opening portion (not shown), heat
It is connected by third opening portion between switch 42 and refrigeration machine 41.
The heat in the second cavity 151 outside ball grinder 14 by heat-exchange device 22 export, without doubt, second
151 planted agent of cavity has heat-conducting medium (not shown), which can be that liquid phase can also be gas phase, preferably gas phase.
Heat-exchange device is by the heat derives of the heat-conducting medium in the second cavity 151.Heat-exchange device 22 can be handed over for such as gas-liquid heat
Heat transfer to the heat of parallel operation, gas-liquid heat exchanger internal circulation flow coolant liquid, the gas phase heat-conducting medium in the second cavity 151 is handed over
Coolant liquid in changing device 42, processing of the coolant liquid through the refrigeration machine 21 outside outer housing 15 and temperature reduce, so cycle with
The holding for realizing low temperature in the second cavity 151, to ensure the low temperature milling atmosphere in the first cavity 141.Pass through 21 He of refrigeration machine
Heat-exchange device 22 can realize that low temperature reaches between -50 DEG C to 0 DEG C in the first cavity 141.The low temperature environment can make
Common metal material is such as 18CrNiMo7,42CrMo and the transformation of obvious black brittleness occurs for epoxy resin etc., full
The ball milling requirement of foot major part material.
In the present embodiment, outer housing 15 is stainless steel material, and 15 inner wall of outer housing coats one or more layers thermal insulation material
Layer or outer housing 15 include vacuum layer.
Further to promote the export of heat in the first cavity 141 and the second cavity 151, and also to the first cavity
Interior pending material is protected, and the present invention is also provided with compression system 5.Compression system 5 includes inert gas generator
51 and vacuum plant 52, for adjusting the pressure in the second cavity 151 and the first cavity 141.Outer housing 15 is opened equipped with the 4th
Oral area (not shown), inert gas generator 51 by the first pipeline 511 be connected to outer housing 15 the 4th opening portion and
It is tightly connected with the second cavity 151 of outer housing 15 at 4th opening portion, the first pipeline 511 is equipped with first flow control valve
512, it can be filled with into the second cavity 151 outside ball grinder 14 with different flow by the first flow control valve 512 lazy
Property gas.There are the 5th opening portion (not shown), vacuum plant 52 to pass through the 5th opening portion and the second cavity 151 on outer housing 15
It is tightly connected, to which vacuum plant 52 can vacuumize the second cavity 151.The 6th opening portion is additionally provided on outer housing 15
(not shown) and the 7th opening portion (not shown) is additionally provided with the 8th opening portion (not shown) and the 9th opening portion on ball grinder 14
(not shown), inert gas generator 51 pass through the 6th opening portion and the ball grinder 14 of outer housing 15 by the second pipeline 513
The 8th opening portion be tightly connected, vacuum plant 52 pass through outer housing 15 the 7th opening portion and ball grinder 14 the 9th opening portion
It is tightly connected, to which vacuum plant 52 also can be to vacuumizing in the first cavity 141 of ball grinder 14, inert gas generator
It can be to providing inert gas in the first cavity 141 of ball grinder 14, the second pipeline 513 is equipped with second flow control valve 514, leads to
Inert gas can be filled with different flow into the first cavity 141 of ball grinder 14 by crossing the second flow control valve 514.First
Ball milling is carried out after being vacuumized in cavity 141, can also vacuumize and carries out ball milling after being filled with inert gas.Inert gas energy
Enough to play the role of air seal to the first cavity 141, the air outside outer housing 15 will not enter in the first cavity 141, should
The pressure that air seal effect can bear by outer housing 15 determines, by adjusting the amount of the inert gas in the second cavity 151
The pressure in the second cavity 151 can be adjusted.Preferably, normal pressure or overvoltage are kept in the second cavity 151.Inert gas occurs
It is inert gas that device 51 is filled with into the second cavity 151 outside ball grinder 14, even if occurring because of the first of ball grinder 14
Pressure causes gas in the second cavity 151 to be redirected back into ball grinder 14 less than pressure in the second cavity 151 in cavity 141,
Inert gas is also possible to prevent pending material by oxidation even burning etc..In other embodiments, it is used for the first cavity 141
The vacuum plant vacuumized with the second cavity 151 can be respectively set, for providing the first cavity 141 and the second cavity 151
The inert gas generator of inert gas can also be respectively set.
But still have some materials needs that can just have obvious ductile-brittle transiton phenomenon at lower temperatures, such as
10Ni8CrMoV steel (- 150 DEG C), or even also the metal materials such as tantalum, niobium need -200 DEG C of low temperature below.To be further ensured that
Temperature in ball grinder 14 can be under low temperature always, and the present invention is also provided with two level cooling system 4.Two level cooling system 4
It include the cooling fluid generating means that cooling fluid is provided into the first cavity 141.
Specifically, it is cooling liquid at low temperature, as temperature raising can volatilize or vaporize simultaneously that cooling fluid, which may be selected,
And the fluid not reacted with pending material and ball-milling medium.In the present embodiment, cooling fluid selects liquid nitrogen, cooling stream
Body generating means is liquid nitrogen generating means 41.It enables to reach -200 in the first cavity 141 by the liquid nitrogen generating means 41
DEG C low temperature, further improve and the scope of application and widened cooling temperature section.
For ease of the operation of two level cooling system 4, liquid nitrogen generating means 41 is arranged outside outer housing 15.On ball grinder 14
Equipped with the tenth opening portion (not shown), outer housing 15 is equipped with the 11st opening portion (not shown), and liquid nitrogen generating means 41 passes through
Third pipeline 42, the 11st opening portion on outer housing 15 are connected to the tenth opening portion on ball grinder 14 and and ball grinder
14 the first cavity 141 is tightly connected, and third pipeline 42 is equipped with third flow control valve 43, passes through the third flow control valve
43 can be filled with liquid nitrogen with different flow into the first cavity 141 of ball grinder 14.
Explosion-proof valve 143 is additionally provided on ball grinder 14, when pressure is more than a predetermined threshold in the first cavity 141 of ball grinder 14
When, explosion-proof valve 143 can automatically open, and the pressure in the first cavity 141 of ball grinder 14 is gradually fallen after rise to normal range (NR),
The air-tightness of the first cavity 141 to continue to ball grinder 14 is automatically closed in explosion-proof valve 143.
Agitating paddle 13 is driven to rotate by motor 11 drives agitating shaft 12 to rotate, the rotation of agitating paddle 13 makes ball milling
Ball-milling medium 142 and the mutual sharp impacts of pending material in first cavity 141 of tank 14 are in turn by pending material
It is little particle to crush.Under the lower temperature environment that liquid nitrogen is provided, pending material can be crushed to Nano grade even
It is more advanced.
Ball grinder 14 can be Stainless Steel Vacuum tank body, zirconium oxide tank body or aluminium oxide tank body, preferably Stainless Steel Vacuum
Tank body.Ball-milling medium 142 may include ball milling ball, be selected according to pending material, such as alumina balls, zirconia ball,
Can also include other grinding aids.
It will produce a large amount of heat in mechanical milling process, the heating and vaporization of liquid nitrogen in ball grinder 14, nitrogen can be caused to enter
In second cavity 151.A part of heat can be because explosion-proof valve 143 be beaten when pressure rise in ball grinder 14 in first cavity 141
It opens and enters in the second cavity 151 with nitrogen, some heat can be transferred directly to ball grinder 14 itself and then be transferred to
Gas in second cavity 151.Heat-exchange device 22 is set in the second cavity 151 outside ball grinder 14, can be to entering the
Gas in two cavitys 151 is cooled down, and low temperature is remained in the first cavity 141 to ensure ball grinder 14.
In the second cavity 151 to further realize the 141 inner and outer shell 15 of the first cavity of real time monitoring ball grinder 14
Temperature and pressure, the present invention also added device for monitoring temperature 6 and pressure monitoring device 7.As shown in fig. 1, monitoring temperature
Device 6 includes the first temperature sensor 61 for being monitored to the temperature in the first cavity 141, for the second cavity
The second temperature sensor 62 and Temperature Treatment module 63 that temperature in 151 is monitored, the first temperature sensor 61 and
Two temperature sensors 62 can be opened by other on other opening portions (not shown) and outer housing 15 on ball grinder 14 respectively
Oral area (not shown) is externally attached to same temperature processing module 63 outer housing 15, to pass through a Temperature Treatment module 63
Temperature in processing and display while the first cavity 141 of monitoring and the second cavity 151.Pressure monitoring device 7 includes for
First pressure sensor 71 that pressure in one cavity 141 is monitored, for being monitored to the pressure in the second cavity 151
Second pressure sensor 72 and pressure treatment module 73, first pressure sensor 71 and second pressure sensor 72 can divide
Not outside by other opening portions (no longer illustrating) on other opening portions (no longer illustrating) and outer housing 15 on ball grinder 14
Shell 15 is externally attached to same pressure treatment module 73, with by the processing of a pressure treatment module 73 and display at the same supervise
Control the pressure in the first cavity 141 and the second cavity 151.
It is understood that multiple opening portions have been used in above description, merely to indicating different pipelines or structure
With the connection of outer housing or ball grinder, do not limit different pipelines or structure must respectively by corresponding opening portion,
Multiple pipelines or structure can will be made to pass through an opening portion according to actual conditions, as on outer housing the 4th opening portion, the 5th
Opening portion, the 6th opening portion, the 7th opening portion, the 11st opening portion can essentially synthesize an opening portion, second temperature
Other opening portions that sensor and second pressure sensor pass through can synthesize an opening portion, using quiet at the opening portion
Sealing, to realize inert gas generator, liquid nitrogen generating means, vacuum plant and second temperature sensor and second simultaneously
The connection of pressure sensor and outer housing or its second cavity.Similarly, the 8th opening portion on ball grinder, the 9th opening portion,
Tenth opening portion can be combined into an opening portion, for the first temperature sensor and first pressure sensor by other openings
Portion can be to be combined into an opening portion, and static seal is used at the opening portion, to realize the first temperature sensor and first simultaneously
The connection of pressure sensor and the first cavity in ball grinder.
The course of work of ball-grinding machine provided by the invention is：
First charging aperture and second charging aperture are opened, ball-milling medium and pending material are added into ball grinder, then closes
Close first charging aperture.When the temperature needed for ball milling is within -50 DEG C, it is only necessary to use level-one cooling system, open vacuum
The first cavity of device pair and the second cavity vacuumize respectively, then open the first cavity of inert gas generator pair and the second cavity
Inert gas is provided, and keep the second cavity be normal pressure or overvoltage (only the first cavity can also be vacuumized, in ball grinder with
Vacuum state carries out ball milling).Start level-one cooling system, the refrigeration machine and heat-exchange device of level-one cooling system are by the second cavity
Interior heat derives can ensure to be in low temperature in the first cavity, start motor and carry out ball milling.When the temperature ratio-needed for ball milling
50 DEG C it is lower when, it is also necessary to start two level cooling system.Explosion-proof valve is opened, and opens liquid nitrogen generating means, is led into ball grinder
Enter the first cavity of liquid nitrogen pair and carry out gas washing, explosion-proof valve is closed after the completion of gas washing and (or is taken out by the first cavity of vacuum plant pair true
Liquid nitrogen is passed through after sky again).Second charging aperture is closed, is vacuumized by the second cavity of vacuum plant pair, is occurred by inert gas
Device is passed through inert gas into the second cavity and keeps normal pressure or overvoltage.Start motor and carries out ball milling, liquid nitrogen in mechanical milling process
Heated vaporization, when the first cavity internal pressure is more than a predetermined threshold, explosion-proof valve automatically opens, and the pressure in the first cavity is gradual
It falls after rise to explosion-proof valve after normal range (NR) and is automatically closed.Liquid nitrogen generating means can also be opened in mechanical milling process to continue to the first cavity
Interior supplement liquid nitrogen.Level-one cooling system can work at this time, and refrigeration machine and heat-exchange device are by the inertia in the second cavity
The heat derives of the mixed gas of gas and nitrogen.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of ball-grinding machine, which is characterized in that cooled down including milling system and for carrying out cooling level-one to milling system
System；The milling system includes motor, drives the agitating shaft of rotation by the motor, is connected to the agitating shaft far from motor
One end agitating paddle, the ball grinder with the first cavity and the outer housing with the second cavity, the agitating shaft far from electricity
One end of machine and the agitating paddle are respectively positioned in the first cavity of the ball grinder, the ball grinder and are connected to ball grinder
A part of agitating shaft is located in second cavity；The level-one cooling system is connected to the outer housing and to second chamber
Body is cooled down.
2. ball-grinding machine as described in claim 1, which is characterized in that the level-one cooling system includes refrigeration machine and heat exchange
Device, the heat-exchange device are set in second cavity, and the refrigeration machine is set to the outside of the outer housing.
3. ball-grinding machine as described in claim 1, which is characterized in that the ball-grinding machine further includes being connect with the ball grinder
Two level cooling system, the two level cooling system include to first cavity provide cooling fluid cooling fluid fill
It sets.
4. ball-grinding machine as claimed in claim 3, which is characterized in that the cooling fluid generating means is that liquid nitrogen fills
It sets, the cooling fluid is liquid nitrogen.
5. ball-grinding machine as described in claim 1, which is characterized in that the ball-grinding machine further includes being connect with the outer housing
Compression system, the compression system includes inert gas generator and vacuum plant, and the vacuum plant is set to described outer
Hull outside, for being vacuumized to second cavity, the inert gas generator into second cavity for carrying
For inert gas.
6. ball-grinding machine as claimed in claim 5, which is characterized in that the compression system is additionally coupled to the ball grinder, institute
It states vacuum plant to be additionally operable to vacuumize first cavity, the inert gas generator is additionally operable to first cavity
Interior offer inert gas.
7. such as ball-grinding machine according to any one of claims 1 to 6, which is characterized in that be equipped with support in second cavity
Frame, support frame as described above are equipped with card slot, and the ball grinder is sticked on the card slot and is fixed on support frame as described above.
8. such as ball-grinding machine according to any one of claims 1 to 6, which is characterized in that the outer housing inner wall coating is at least
One layer of heat preservation material or the outer housing include vacuum layer.
9. such as ball-grinding machine according to any one of claims 1 to 6, which is characterized in that the ball-grinding machine further includes being set to
Pressure monitoring device outside the outer housing for being monitored to the pressure in first cavity and/or the second cavity.
10. such as ball-grinding machine according to any one of claims 1 to 6, which is characterized in that the ball-grinding machine further includes being set to
Device for monitoring temperature outside the outer housing for being monitored to the temperature in first cavity and/or the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810468113.2A CN108371996A (en) | 2018-05-16 | 2018-05-16 | Ball milling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810468113.2A CN108371996A (en) | 2018-05-16 | 2018-05-16 | Ball milling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108371996A true CN108371996A (en) | 2018-08-07 |
Family
ID=63033498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810468113.2A Pending CN108371996A (en) | 2018-05-16 | 2018-05-16 | Ball milling equipment |
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| Country | Link |
|---|---|
| CN (1) | CN108371996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022056260A3 (en) * | 2020-09-11 | 2022-05-27 | The Regents Of The University Of California | Cryogenic milling techniques for fabrication of nanostructured electrodes |
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