CN106404627A - Dust environment simulating device - Google Patents
Dust environment simulating device Download PDFInfo
- Publication number
- CN106404627A CN106404627A CN201610981786.9A CN201610981786A CN106404627A CN 106404627 A CN106404627 A CN 106404627A CN 201610981786 A CN201610981786 A CN 201610981786A CN 106404627 A CN106404627 A CN 106404627A
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- section
- dust
- wind inlet
- active diffusion
- inlet section
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- 239000000428 dust Substances 0.000 title claims abstract description 109
- 238000009792 diffusion process Methods 0.000 claims abstract description 68
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 238000004088 simulation Methods 0.000 claims description 32
- 238000013459 approach Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000007704 transition Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a dust environment simulating device. The dust environment simulating device comprises a dust generating device, an air channel, a dust remover and a negative-pressure blower, wherein the wind tunnel comprises an air inlet section, a transition section, a test section and a dust removal section which are successively connected; the dust remover is arranged on the dust removal section; the negative-pressure blower is arranged at the downstream end of the dust removal section; an active diffusion cylinder is arranged at the upstream of the air inlet section; the active diffusion cylinder is horn-shaped; a positive-pressure blower is mounted at the small-diameter end of the active diffusion cylinder; the large-diameter end of the active diffusion cylinder is connected with the air inlet section; a dust inlet is formed in the cylinder wall of the active diffusion cylinder, and is connected with the dust generating device; an incoming direction line of the dust is intersected with a central line of the active diffusion cylinder, so that the length of the air channel can be reduced under the precondition that the dust diffusion uniformity is ensured. The simulating device has higher practicability.
Description
Technical field
The present invention relates to a kind of dust environment simulation equipment, for trying to the calibration of sensor of dust concentration or other dust
Test.
Background technology
Environment simulation technique is a new marginal technology, mainly study various natural environment imageneering technology and
The experimental technique of product under simulated environment；Ground environment simulator mainly has following a few class:Low temperature environment simulation, hot environment
Simulation, hygrothermal environment simulation, solar irradiation simulation, sand dust environmental simulation, rain environmental simulation, dipping simulation, sour environment simulation,
Explosive atmospheric environment simulation, accumulated ice/sleet environmental simulation and mycete environmental simulation etc..Some environment can after simulation out
In the interior environment reliability test carrying out product, accuracy correction or long duration test etc..Simulate with dust atmosphere in upper subseries
Immediate is Sand Dust Environment simulation, and because sand and dust are different from the particle diameter of dust, the concentration of dust, uniformity etc. are compared with sand and dust
More it is difficult to control to.And Patent No.:ZL:201310140290.5 mandate open file disclose a kind of simulation of dust atmosphere
Equipment, this simulator can simulate the dust atmosphere of even concentration, and concentration is adjustable, is produced using this simulator
The test structure that the test of product obtains is more accurate.So this dust environment simulation equipment has at least two shortcomings：1. due to this
Wind-tunnel includes wind inlet section, turbulent section, test section and cleaner unit and the blower fan connecting wind-tunnel downstream, by wind inlet section, turbulent section,
The caliber change of test section, extracts negative pressure using blower fan, makes dust pass through wind-tunnel and uniformly spread, so this structure needs wind-tunnel
Length exceedes certain numerical value just can make dust recycling more uniform, and the length of some wind-tunnel reaches more than ten meters long, so to place
Requirement harsh, practicality reduces；2., because wind-tunnel length is long, dust occurs sedimentation unavoidably in diffusion, and the powder settling
Dust quantity is simultaneously uncontrollable, and the concentration of dust is usually calculated according to the powder amount of dust generator, then the powder of sedimentation
Dust quantity is fewer, and dust concentration is more accurate, and in the patent of invention file of above-mentioned mandate, wind-tunnel length is very long, the Dust Capacity of sedimentation
More, not but cause certain waste, and make dust concentration undulatory property big, dust concentration is unstable to will result in dust
The calibration result of test or sensor of dust concentration is inaccurate, in addition in addition it is also necessary to clear up to wind-tunnel inwall, which increases
Operating cost.
Content of the invention
The technical problem to be solved is：There is provided a kind of dust environment simulation equipment, this dust simulator profit
So that dust is actively spread with positive pressure fan, and by active diffusion barrel diffusion turbulent flow, the dust after diffusion is again through negative-pressure air fan
Suction after flow to changeover portion and test section successively, so, ensure dust recycling uniformity on the premise of can shorten wind-tunnel
Length, practicality is higher.
For solving above-mentioned technical problem, the technical scheme is that：A kind of dust environment simulation equipment, sends out including dust
Generating apparatus, wind-tunnel, cleaner unit and negative-pressure air fan, described wind-tunnel includes wind inlet section, changeover portion and the test section being sequentially connected and removes
Dirt section, described cleaner unit is arranged in dedusting section, and described negative-pressure air fan is arranged at the downstream of dedusting section, described wind inlet section upper
Trip is provided with active diffusion barrel, and described active diffusion barrel becomes horn-like, and the miner diameter end of described active diffusion barrel is provided with malleation
Blower fan, the bigger diameter end of described active diffusion barrel is connected with wind inlet section, the barrel of described active diffusion barrel is provided with dust and enters
Mouthful, this dust inlet port is connected with dust generator, and the approach axis line of dust is intersected with the centrage of active diffusion barrel.
As a kind of preferred scheme, the upstream end thereof opening of described wind inlet section, the bigger diameter end of described active diffusion barrel from
It extend into wind inlet section at described opening, between described active diffusion barrel and the inwall of wind inlet section, there is air intake passage.
As a kind of preferred scheme, described air intake passage is the air intake passage of air intake variable area.
As a kind of preferred scheme, at the opening of described wind inlet section, it is fixedly installed necking cylinder section, described necking cylinder section
Miner diameter end be connected with wind inlet section, described active diffusion barrel is slidably mounted on base along the axis horizontal of wind-tunnel, described active
Fixed by fixture between diffusion barrel and base.
As a kind of preferred scheme, telescopic necking cylinder section, described necking are installed at the opening of described wind inlet section
Cylinder section is connected with the end of wind inlet section, and the miner diameter end of described necking cylinder section extend in wind inlet section.
As a kind of preferred scheme, described necking cylinder section includes external conical-tube section and inner conical-tube section, described outer tube cone section with
The end of wind inlet section is fixedly connected, and described inner conical-tube section is set in external conical-tube section, and described inner conical-tube section is provided with least two
The individual adjustment bar hole parallel with bus, described external conical-tube section is provided with the stud being constrained in adjustment bar in the hole, on described stud
It is provided with and tighten nut.
As a kind of preferred scheme, the approach axis line of described dust and the central axis of active diffusion barrel.
As a kind of preferred scheme, the described centrage of active diffusion barrel is overlapped with the centrage of wind inlet section.
As a kind of preferred scheme, described wind inlet section, changeover portion and test section are the cylindrical shape of same diameter.
After employing technique scheme, the effect of the present invention is：Actively expand because the upstream of described wind inlet section is provided with
Scattered cylinder, described active diffusion barrel becomes horn-like, and the miner diameter end of described active diffusion barrel is provided with positive pressure fan, and described active is expanded
The bigger diameter end of scattered cylinder is connected with wind inlet section, and the barrel of described active diffusion barrel is provided with dust inlet port, this dust inlet port
It is connected with dust generator, the approach axis line of dust is intersected with the centrage of active diffusion barrel.Therefore, dust generator
Dust is uniformly delivered in active diffusion barrel, because one end of active diffusion barrel is connected to positive pressure fan, therefore, the powder of feeding
Dirt is dispelled by positive pressure fan and delivers in wind inlet section, and barrel dliameter is gradually increased when the active diffusion barrel due to dust, dust-contained airflow
Diffusion, makes dust-contained airflow that turbulent flow to occur, positive pressure fan accelerates diffusion and the turbulent flow of dust, so can shorten the length of wind-tunnel,
The flow direction of wind that positive pressure fan produces simultaneously can bump against with the approach axis of dust, so that dust is broken up, further speed up diffusion, this
Sample, the dust after diffusion will uniformly spread on test section after changeover portion, so, this dust environment simulation equipment one
Aspect can shorten the length of wind-tunnel, and practicality strengthens, and another aspect wind-tunnel contraction in length can reduce the settling amount of dust, make powder
The undulatory property of dust concentration reduces, and the stability of concentration in dust simulated environment improves.
Again due to the upstream end thereof opening of described wind inlet section, the bigger diameter end of described active diffusion barrel stretches at described opening
To wind inlet section, between described active diffusion barrel and the inwall of wind inlet section, there is air intake passage, therefore, can be using this air intake passage
During the air-out of active diffusion barrel, outside air also can enter in wind inlet section from air intake passage, so not only permissible
The further impact to dust, meanwhile, outside air enter fashionable can enter along the inwall of wind inlet section, so can reduce dust
Settling amount, and the inwall of wind inlet section is washed away, so that the dust of sedimentation is kicked up again, so not only can improve the expansion of dust
Scattered speed and the uniformity of diffusion, and decrease the sedimentation of dust, so that the fluctuation of dust concentration is reduced, stability improves, and makes
The error of actual dust simulated concentration and theoretical dust simulated concentration reduces.
Again because described air intake passage is the air intake passage of air intake variable area, the air intake variable area of this air intake passage,
So its intake just can be adjusted, and so can adjust suitable intake, makes uniformity and the dust of the diffusion of dust
The stability of concentration is in optimum state.
Brief description
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2 is the structural representation of the necking cylinder section in embodiment 1；
Fig. 3 is the partial enlargement structure sectional view of the necking cylinder section in embodiment 1；
Fig. 4 is the structural representation of the embodiment of the present invention 2；
In accompanying drawing：1. wind inlet section；2. changeover portion；3. test section；4. dedusting section；5. negative-pressure air fan；6. cleaner unit；7. necking
Cylinder section；71. external conical-tube sections；72. inner conical-tube sections；73. adjustment bar holes；74. studs；75. tighten nut；7 ' necking cylinder sections；8. main
Dynamic diffusion barrel；9. positive pressure fan；10. dust inlet port；11. bases.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail.
Embodiment 1
As shown in Figures 1 to 3, a kind of dust environment simulation equipment, including dust generator, wind-tunnel, cleaner unit 6 and negative pressure
Blower fan 5, described wind-tunnel includes wind inlet section 1, changeover portion 2 and the test section 3 being sequentially connected and dedusting section 4, and described cleaner unit 6 is arranged
In dedusting section 4, described negative-pressure air fan 5 is arranged at the downstream of dedusting section 4, and the upstream of described wind inlet section 1 is provided with actively to be expanded
Scattered cylinder 8, described active diffusion barrel 8 becomes horn-like, and the miner diameter end of described active diffusion barrel 8 is provided with positive pressure fan 9, described master
The bigger diameter end of dynamic diffusion barrel 8 is connected with wind inlet section 1, the barrel of described active diffusion barrel 8 is provided with dust inlet port 10, this powder
Dirt inlet port 10 is connected with dust generator, and the approach axis line of dust is intersected with the centrage of active diffusion barrel 8.
The upstream end thereof opening of described wind inlet section 1, the bigger diameter end of described active diffusion barrel 8 extend at described opening into
, there is air intake passage between described active diffusion barrel 8 and the inwall of wind inlet section 1 in wind section 1, described air intake passage both can be air intake
The fixing air intake passage of cross-sectional sizes, can also be the air intake passage of air intake variable area.
The mode adjusting air intake section has multiple, in the present embodiment 1, is provided with scalable at the opening of described wind inlet section 1
Necking cylinder section 7, described necking cylinder section 7 is connected with the end of wind inlet section 1, and the miner diameter end of described necking cylinder section 7 extend into air intake
In section 1, described necking cylinder section 7 includes external conical-tube section 71 and inner conical-tube section 72, and the end that described outer tube bores section and wind inlet section 1 is fixed
Connect, described inner conical-tube section 72 is set in external conical-tube section 71, described inner conical-tube section 72 is provided with least two and puts down with bus
The adjustment bar hole 73 of row, described external conical-tube section 71 is provided with the stud 74 being constrained in adjustment bar hole 73, on described stud 74
It is provided with and tighten nut 75.The length of wind inlet section 1 can be extend into during use by adjusting inner conical-tube section 72, enter needed for adjusting
The size in wind section, thus the air adjusting outside enters fashionable air quantity.Certainly, necking cylinder section 7 can also be other structures.
During work, dust is delivered in active diffusion barrel 8 by dust generator, and one end of active diffusion barrel 8 is just connected to
Pressure fan 9, therefore, the dust of feeding is dispelled by positive pressure fan 9 to be delivered in wind inlet section 1, and because dust is through active diffusion barrel 8
When barrel dliameter be gradually increased, dust-contained airflow spreads, and makes dust-contained airflow that turbulent flow to occur, positive pressure fan 9 accelerates the diffusion of dust and disorderly
Stream, so can shorten the length of wind-tunnel, and the flow direction of wind that positive pressure fan 9 produces simultaneously can bump against with the approach axis of dust, makes
Dust breaks up, and further speeds up diffusion, and so, the dust after diffusion will uniformly spread in test section 3 after changeover portion 2
On, the simulated environment of therefore this dust environment simulation equipment is more true, and test result is also more accurate.
In addition, the central axis of the approach axis line of described dust and active diffusion barrel 8, now, positive pressure fan 9 produces
The flow direction of wind can vertical bump against with the approach axis of dust, thus reach acceleration the uniform purpose of dust recycling.
In the present embodiment 1, the centrage of active diffusion barrel 8 is overlapped with the centrage of wind inlet section 1, wind inlet section 1, changeover portion 2
It is the cylindrical shape of same diameter with test section 3.
Embodiment 2
In the present embodiment 2, at the opening of wind inlet section 1, it is fixedly installed necking cylinder section 7 ', the path of described necking cylinder section 7 '
End is connected with wind inlet section 1, and described active diffusion barrel 8 is slidably mounted on base 11 along the axis horizontal of wind-tunnel, and described active is expanded
Fixed by fixture between scattered cylinder 8 and base 11.During use, as desired by the position adjustments of slip active diffusion barrel 8
The air intake section of air intake passage, thus extraneous air is entered with fashionable air quantity be adjusted.
Other structures in the present embodiment 2 are all same as Example 1.
Embodiment described above is only the description to the preferred embodiment of the present invention, not as the limit to the scope of the invention
Fixed, on the basis of without departing from design spirit of the present invention, the various modifications that technical solution of the present invention is made and transformation, all should fall
Enter in the protection domain of claims of the present invention determination.
Claims (9)
1. a kind of dust environment simulation equipment, including dust generator, wind-tunnel, cleaner unit and negative-pressure air fan it is characterised in that：
Described wind-tunnel includes wind inlet section, changeover portion and the test section being sequentially connected and dedusting section, and described cleaner unit is arranged in dedusting section,
Described negative-pressure air fan is arranged at the downstream of dedusting section, and the upstream of described wind inlet section is provided with active diffusion barrel, and described active is expanded
Scattered cylinder becomes horn-like, and the miner diameter end of described active diffusion barrel is provided with positive pressure fan, the bigger diameter end of described active diffusion barrel with
Wind inlet section is connected, and the barrel of described active diffusion barrel is provided with dust inlet port, this dust inlet port and dust generator
Connect, the approach axis line of dust is intersected with the centrage of active diffusion barrel.
2. as claimed in claim 1 a kind of dust environment simulation equipment it is characterised in that：The upstream end thereof of described wind inlet section is opened
Mouthful, the bigger diameter end of described active diffusion barrel extend into wind inlet section at described opening, and described active diffusion barrel is interior with wind inlet section
There is air intake passage between wall.
3. as claimed in claim 2 a kind of dust environment simulation equipment it is characterised in that：Described air intake passage is air intake section
Adjustable air intake passage.
4. as claimed in claim 3 a kind of dust environment simulation equipment it is characterised in that：Fix at the opening of described wind inlet section
It is provided with necking cylinder section, the miner diameter end of described necking cylinder section is connected with wind inlet section, and described active diffusion barrel is along the axis water of wind-tunnel
Put down and be slidably mounted on base, fixed by fixture between described active diffusion barrel and base.
5. as claimed in claim 3 a kind of dust environment simulation equipment it is characterised in that：Install at the opening of described wind inlet section
There is telescopic necking cylinder section, described necking cylinder section is connected with the end of wind inlet section, and the miner diameter end of described necking cylinder section extend into
In wind inlet section.
6. as claimed in claim 5 a kind of dust environment simulation equipment it is characterised in that：Described necking cylinder section includes external conical-tube
Section and inner conical-tube section, described outer tube cone section is fixedly connected with the end of wind inlet section, and described inner conical-tube section is set in external conical-tube section,
At least two adjustment bar holes parallel with bus are provided with described inner conical-tube section, described external conical-tube section are provided with and are constrained in tune
The stud of section bar in the hole, described stud is provided with and tightens nut.
7. a kind of dust environment simulation equipment as described in claim 1 to 6 it is characterised in that：The approach axis of described dust
Line and the central axis of active diffusion barrel.
8. as claimed in claim 7 a kind of dust environment simulation equipment it is characterised in that：The centrage of described active diffusion barrel
Overlap with the centrage of wind inlet section.
9. as claimed in claim 8 a kind of dust environment simulation equipment it is characterised in that：Described wind inlet section, changeover portion and survey
Examination section is the cylindrical shape of same diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981786.9A CN106404627A (en) | 2016-11-08 | 2016-11-08 | Dust environment simulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610981786.9A CN106404627A (en) | 2016-11-08 | 2016-11-08 | Dust environment simulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404627A true CN106404627A (en) | 2017-02-15 |
Family
ID=58015236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610981786.9A Pending CN106404627A (en) | 2016-11-08 | 2016-11-08 | Dust environment simulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404627A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680167A (en) * | 2017-02-20 | 2017-05-17 | 常熟市顺欣仪器仪表有限公司 | Performance test device for dust detector |
| CN108535446A (en) * | 2018-04-19 | 2018-09-14 | 河南工程学院 | Pipeline gas explosion causes the experimental provision and method that deposit coal dust subsequent explosion |
| CN109883784A (en) * | 2019-02-26 | 2019-06-14 | 中钢集团武汉安全环保研究院有限公司 | Dust generator |
| CN111456984A (en) * | 2020-04-17 | 2020-07-28 | 安徽捷迅光电技术有限公司 | Dust environment simulation tester for detecting performance of air cylinder |
| CN112067234A (en) * | 2020-09-11 | 2020-12-11 | 北京理工大学 | Radiator performance wind tunnel test device capable of simulating multiphase flow air inlet environment |
| CN115184033A (en) * | 2022-09-05 | 2022-10-14 | 中国航发四川燃气涡轮研究院 | Sand blasting equipment for sand swallowing test of aircraft engine and calibration method of sand blasting equipment |
| CN115970599A (en) * | 2022-12-13 | 2023-04-18 | 中国矿业大学 | High-precision belt type dust generator and calibration method thereof |
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| FR1149641A (en) * | 1955-12-13 | 1957-12-30 | Buehler Ag Geb | Machine for converting, spotting and sifting of grain milled products |
| CN103133243A (en) * | 2013-03-15 | 2013-06-05 | 江苏中蕴风电科技有限公司 | Air controlling device used for gathering air and generating electricity |
| CN103234573A (en) * | 2013-04-22 | 2013-08-07 | 张家港朗亿机电设备有限公司 | Dust environment simulation equipment |
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| CN203606137U (en) * | 2013-10-31 | 2014-05-21 | 佛山市南华仪器股份有限公司 | Flow regulation device used for flow analysis meter |
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| CN206132569U (en) * | 2016-11-08 | 2017-04-26 | 张家港朗亿机电设备有限公司 | Dusty environment analog device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680167A (en) * | 2017-02-20 | 2017-05-17 | 常熟市顺欣仪器仪表有限公司 | Performance test device for dust detector |
| CN108535446A (en) * | 2018-04-19 | 2018-09-14 | 河南工程学院 | Pipeline gas explosion causes the experimental provision and method that deposit coal dust subsequent explosion |
| CN108535446B (en) * | 2018-04-19 | 2023-08-22 | 河南工程学院 | Experimental device and method for secondary explosion of deposited coal dust caused by gas explosion of pipeline |
| CN109883784A (en) * | 2019-02-26 | 2019-06-14 | 中钢集团武汉安全环保研究院有限公司 | Dust generator |
| CN111456984A (en) * | 2020-04-17 | 2020-07-28 | 安徽捷迅光电技术有限公司 | Dust environment simulation tester for detecting performance of air cylinder |
| CN112067234A (en) * | 2020-09-11 | 2020-12-11 | 北京理工大学 | Radiator performance wind tunnel test device capable of simulating multiphase flow air inlet environment |
| CN112067234B (en) * | 2020-09-11 | 2022-02-01 | 北京理工大学 | Radiator performance wind tunnel test device capable of simulating multiphase flow air inlet environment |
| CN115184033A (en) * | 2022-09-05 | 2022-10-14 | 中国航发四川燃气涡轮研究院 | Sand blasting equipment for sand swallowing test of aircraft engine and calibration method of sand blasting equipment |
| CN115970599A (en) * | 2022-12-13 | 2023-04-18 | 中国矿业大学 | High-precision belt type dust generator and calibration method thereof |
| CN115970599B (en) * | 2022-12-13 | 2023-08-11 | 中国矿业大学 | High-precision belt type dust generator and calibration method thereof |
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