CN106733640A - The pneumatic separation device and wind selection method of a kind of granule materials - Google Patents
The pneumatic separation device and wind selection method of a kind of granule materials Download PDFInfo
- Publication number
- CN106733640A CN106733640A CN201611177385.4A CN201611177385A CN106733640A CN 106733640 A CN106733640 A CN 106733640A CN 201611177385 A CN201611177385 A CN 201611177385A CN 106733640 A CN106733640 A CN 106733640A
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- Prior art keywords
- selection
- winnowing
- separation device
- pneumatic separation
- air inlet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/02—Arrangement of air or material conditioning accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
- B07B4/04—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses the pneumatic separation device and wind selection method of a kind of granule materials, including device body, feeding warehouse and collecting bin；Wherein, described device body is the hollow structure surrounded by housing, set in the left and right sides of device body and be respectively arranged with air inlet and air outlet, air inlet and the coaxial setting of air outlet, wind flow passage between air inlet and air outlet constitutes selection by winnowing passage, and the space below selection by winnowing passage is the chamber that gathers materials；The feeding warehouse be arranged on device body upper end, and with the selection by winnowing channel connection；Collecting bin is along wind flow directional spreding in the lower section of selection by winnowing passage, each collecting bin includes collection portion and the blanking portion being arranged on below collection portion, the upper end open in blanking portion is relative with the lower ending opening of collection portion, the A/F along wind flow direction of the collection portion can adjust, and the lower ending opening in blanking portion extends to the outside of the housing；In the chamber that gathers materials, remove collecting bin and taken up space, remaining space constitutes tailing storehouse.
Description
Technical field
The present invention relates to solid food screening separation technology field, and in particular to the pneumatic separation device and wind of a kind of granule materials
Choosing method.
Background technology
In the past during similar solid sugar alcohol crystal or powder production, crystalloid or powdery granule material are pressed
Grain size is separated, to obtain the product of the particle size range that meets the requirements.Required according to the difference to product granularity, it is sometimes desirable to
Except the less material of degranulation, it is sometimes desirable to except the material that degranulation is larger, it is sometimes desirable to remove the material of median particle size scope,
And different users has different requirements to the particle size range and size distribution of product.
It is general the granule materials such as solid sugar alcohol are separated using the various screening machine with network structure.Its principle is
Material is obtained the material of correspondence particle size range size by the screen cloth of set mesh number size.There is following disadvantage in this kind of method for sieving
End：
1st, product granularity scope specification is more, it is necessary to prepare the screen cloth of more specification, can just filter out different-grain diameter scope
Material, complex operation, screening high cost.And limited by existing screen cloth specification, the product of some particle size ranges is difficult to
Obtain；
2nd, the pressure and the work of the frictional force between material and screen cloth that the twine of screen cloth is conducted oneself with dignity to screen cloth generation in material
It is mixed into material after being come off under, triggers food-safety problem；
3rd, in screening process is carried out using screen cloth, general sugar alcohol can all have certain moisture absorption, in material absorption air
Moisture after particle surface have certain viscosity, have some particles unavoidably even if the material without moisture absorption, during screening by card
Can not be come off on mesh, block mesh, time mesh more long is blocked must be more, can only finally be stopped.Meanwhile, viscosity
Particle is bonded on screen cloth, reduces the aperture of screen cloth, or even blocks mesh, and the material for making particle diameter small is mixed into the material of big particle diameter
In, cause product granularity unqualified.It is therefore desirable to the screen cloth that often cleaning or replacing are blocked, increases labour intensity, production is caused
The low problem of efficiency.
Although being screened to granule materials using winnowing machine in the prior art, existing winnowing machine is all edge
The flow direction of wind is provided with multiple collecting bins, to obtain the particle of different-grain diameter scope.The collecting bin of this winnowing machine is opened
Mouth has been fixed, it is impossible to arbitrarily select particle size range.If adjustment air quantity, still it is difficult to obtain the product of specified particle size scope.
And because the openings of sizes of collecting bin is it has been determined that so the material in the range of specified particle size cannot be screened out optionally, enter
And it is difficult to meet the requirement of now strictly controlled product granularity scope.
The content of the invention
For above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of pneumatic separation device of granule materials, utilize
The pneumatic separation device, can select suitable particle size range, and can selectively screen out the particulate matter of unwanted particle size range
Material, improves the quality of product, meets the different demands of user.
Second object of the present invention is to provide the method that using above-mentioned pneumatic separation device granule materials are carried out with selection by winnowing.
In order to solve the above technical problems, the technical scheme is that：
A kind of pneumatic separation device of granule materials, including device body, feeding warehouse and collecting bin；
Wherein, described device body is the hollow structure surrounded by housing, and difference is set in the left and right sides of device body
Air inlet and air outlet, air inlet and the coaxial setting of air outlet are provided with, the wind flow passage structure between air inlet and air outlet
Become a common practice gating road, and the space below selection by winnowing passage is the chamber that gathers materials；
The feeding warehouse be arranged on device body upper end, and with the selection by winnowing channel connection；
The quantity of the collecting bin is at least two, and along wind flow directional spreding in the lower section of selection by winnowing passage, each gathers materials
Storehouse includes collection portion and the blanking portion being arranged on below collection portion, the upper end open in blanking portion and the lower ending opening phase of collection portion
Right, the A/F along wind flow direction of the collection portion can adjust, and the lower ending opening in blanking portion extends to the housing
It is outside；
In the chamber that gathers materials, remove collecting bin and taken up space, remaining space constitutes tailing storehouse, and tailing sets below storehouse
It is equipped with discharging opening.
The density of same material is identical, and when particle diameter is different, corresponding granular mass is different, from feeding warehouse enter
Under the horizontal applied force of wind, the particle of different quality has different horizontal velocities to grain material, so walking in the horizontal direction
The distance crossed is different.When the quality of particle is smaller, it is in larger distance that particle is passed by, when the quality of particle is larger, what particle was passed by
It is in small distance, thus the particle of different-grain diameter is separated successively.That is, when control wind direction and the timing of wind-force one, specified particle diameter
Particle falls at specific position, and the particle diameter of particle is continuously distributed.
The upper end open of collection portion is designed as to be can adjust along wind flow direction width, i.e. can selectively adjust collection
The particle size range of the opening covering in portion, and then specific particle size range can be selected, the particle size range of product is distributed accurately, carry
Product quality high, while reducing production cost, improves production efficiency.
The chamber that will gather materials removes collecting bin and is taken up space, and remaining space is set to tailing storehouse, when needing to abandon specific grain
When spending the material of scope, the upper end open of collection portion is transferred from the position, now, the upper end open in tailing storehouse can cover the position
Put, that is, cover the particle size range, and then material particles in the particle size range can be collected in tailing storehouse, realize by
The purpose that material in the range of specified particle size is removed.
The winnowing machine can also adjust the temperature and humidity of the wind being passed through, and to adapt to the material of different physical properties, such as prevent
The only adhesion between hygroscopic material particle.And then make the distribution of particles of material more uniform, improve product quality.
Preferably, the collection portion includes Part I and Part II, and this two parts is Collapsible structure, first
Point and the upper end of Part II be flexibly connected with the horizontal rail for being arranged on the enclosure interior, Part I and Part II
The left and right sides of the lower end respectively with blanking portion upper end open be flexibly connected, and the side of Part I and Part II with it is described
Sealed between housing and set.
The two-part upper end of collection portion is flexibly connected with the horizontal rail, and Part I and Part II are
Collapsible structure, the upper end open of collection portion is adjusted by controlling this two parts to be moved left and right along horizontal rail, and then adjust
The raw meal particle size scope that collection portion upper end open is covered.
It is further preferred that the equal length of the length of the horizontal rail and selection by winnowing passage.
It is further preferred that the Part I and Part II include upper slide and lower skateboard, upper slide and downslide
It is flexibly connected by track between plate, along the motion of track, realizes move toward one another between upper slide and lower skateboard and opposite
Motion,.
When upper slide and lower skateboard move toward one another, the contraction of Part I and Part II, upper slide and downslide are realized
When plate is moved opposite to each other, the elongation of Part I and Part II is realized.
Preferably, the blanking portion is the cone stood upside down.
Cone can be pyramid, circular cone etc., can be the cone of rule, or irregular cone.
Preferably, the air inlet is provided with current limiting plate, and the current limiting plate is Collapsible structure.
The presence of current limiting plate can adjust the flow of wind, when the timing of power one of air blower, can adjust the flow velocity of wind, enter
And adjust selection by winnowing effect.
It is further preferred that the current limiting plate is vertically arranged.The effect of current limliting can be improved.
Preferably, the air inlet is provided with wind direction adjusting plate, and the outer end of wind direction adjusting plate is movably connected in the shell
On body, the inner is flexibly connected with the support being fixed on housing, makes wind direction adjusting plate certain along the link position rotation with housing
Angle, realizes the regulation to wind direction.
Wherein, the outer end of wind direction adjusting plate refers to that, near one end of air inlet, the inner of wind direction adjusting plate is remote from air intake
One end of mouth.Wind direction adjusting plate can rotate relative to housing, after adjusting the angle of wind direction adjusting plate, wind direction adjusting plate be existed
It is fixed on support, and then certain air intake direction can be kept.
It is further preferred that the outer end of the wind direction adjusting plate is located at the lower section of the current limiting plate.
When wind direction adjusting plate is located at the lower section of current limiting plate, wind direction adjusting plate constitutes the actual entry of wind with current limiting plate,
Because the actual entry is smaller, when wind direction adjusting plate is set in the position, can be more beneficial for adjusting wind direction.
Change wind direction and change the raw material that air quantity is provided to adapt to raw material or the different grain size distribution of different cultivars.
Preferably, the air inlet is additionally provided with deflection plate, and deflection plate is located at the outside of wind direction adjusting plate.
Outside herein refers near the side of air inlet.Deflection plate can adjust wind direction and blast, advantageously in rear
The adjustment of continuous wind direction and air quantity.
Preferably, the feed opening of the feeding warehouse is rectangle, and the cross section of length and the selection by winnowing passage of feed opening
Width is equal.
This structure is more beneficial for material and is uniformly distributed on selection by winnowing channel cross-section, it is to avoid Biased flow phenomenon occurs in material,
Ensure that the uniformity that material is distributed in selection by winnowing passage.
Preferably, valve is provided with the feed opening of the feeding warehouse, valve is pulling-tray type or rotary.
When the length of feed opening covers the cross section of selection by winnowing passage, the material that will can be fallen is evenly distributed on selection by winnowing and leads to
On the whole cross section in road, uniformity of the material by wind-force is improve, and then improve selection by winnowing effect.
The method that using above-mentioned pneumatic separation device granule materials are carried out with selection by winnowing, is comprised the following steps：
1) air quantity and wind direction of air intake are adjusted for specific granule materials, varigrained material is fallen in different positions
Put place；
2) method by sampling determines varigrained material position；
3) particle size range of the product according to setting, adjusts the coverage of collection portion；
4) air inlet of winnowing machine is connected with air blower, air outlet is connected with air-introduced machine, absorbing quantity is more than the blow rate required；
5) by feeding warehouse to blanking in winnowing machine, selection by winnowing is carried out, and the product after selection by winnowing is collected.
When absorbing quantity is more than the blow rate required, selection by winnowing passage can be made to be in micro-vacuum state, can effectively prevent powder in winnowing machine
The spilling of dirt, it is to avoid the environment to surrounding is polluted.
The beneficial effects of the invention are as follows：
1st, the present invention replaces conventional sieved through sieve using selection by winnowing, saves the trouble of the screen cloth of standby all kinds of specifications, and will
It is adjustable that the portion of gathering materials of pneumatic separation device is designed as A/F, so as to get product granularity specification limit can arbitrarily adjust.
2nd, using pneumatic separation device of the invention, the material particles of specified particle size scope can be selectively screened out, is significantly improved
The quality of product, meets some special requirements.
Brief description of the drawings
Fig. 1 is the main view figure structure schematic representation of pneumatic separation device of the invention；
Fig. 2 is the right view structural representation of pneumatic separation device of the invention；
Fig. 3 is the internal structure and selection by winnowing schematic diagram of pneumatic separation device of the invention；
Fig. 4 is collecting bin granularity selection setting principle figure；
Fig. 5 is the upper slide and the assembly structure diagram of lower skateboard in collecting bin；
Fig. 6 is the upper slide and the Split type structure schematic diagram of lower skateboard in collecting bin；
Fig. 7 is structural representation after the assembling of collecting bin；
Fig. 8 is the opening Principles of Regulation figure of collecting bin.
Wherein, 1- feeding warehouses, 2- selection by winnowing passages, 3- collecting bins, 3-1- upper slides, 3-2- lower skateboards, 3-3- backrest buttons, 3-
4- position limiting structures, 3-5- loose-leaves, 3-6- locknuts, 3-7- lower cones, 4- tailings storehouse, 5- wind direction adjusting plates, 6- current limiting plates, D1- enters
Wind, D2- air-out, the finished product of C1, C2, C3- variable grain size, X- tailings, A- raw materials.
Specific embodiment：
Technical scheme is described further below in conjunction with embodiment and accompanying drawing.
As depicted in figs. 1 and 2, granule materials pneumatic separation device of the invention, including device body, feeding warehouse 1 and collecting bin
3；Described device body is the hollow structure surrounded by housing, is set in the left and right sides of device body and is respectively arranged with air outlet
And air inlet, air inlet and the coaxial setting of air outlet, the wind flow passage composition selection by winnowing passage 2 between air inlet and air outlet,
The space of the lower section of selection by winnowing passage 2 is the chamber that gathers materials；Feeding warehouse 1 is arranged on the upper end of device body, and is connected with selection by winnowing passage 2；
Two arrows in figure refer to the flow direction of wind, and D1 is air intake, and D2 is air-out.
Multiple collecting bins 3 are arranged along the flow direction of wind.The lower end of selection by winnowing passage 2 is additionally provided with tailing storehouse 4, tailing storehouse 4
It is arranged side by side with collecting bin 3, and the lower end of collecting bin 3 does not connect with the lower end in tailing storehouse 4.It is also understood that collecting bin 3 is pacified
In the chamber that gathers materials, housing is extended in the lower end outlet of collecting bin 3, is easy to collection material.Gather materials chamber space it is sufficiently large,
The space that collecting bin 3 occupies, also unnecessary space are removed, and these unnecessary spaces are to constitute tailing storehouse 4.Tailing storehouse 4
Lower end be similarly pyramidal structure, it is convenient to collect the tailing discharge for obtaining.
The number of collecting bin 3 is 3 (can also be 2,4,5 etc., be entered according to different raw material and product specification
Row design), C1 materials, C2 materials and the C3 materials of obtain successively of being turned left from the right side, it can be seen from the flow direction according to wind, C1 materials, C2 materials
Granularity with C3 materials is sequentially reduced.
As shown in Fig. 2 being preferably, the lower end outlet in collecting bin 3 and tailing storehouse 4 is distributed in not homonymy, for the ease of distinguishing
Qualified products and tailing.
As shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8, collecting bin 3 is main by upper slide 3-1, lower skateboard 3-2 and lower cone 3-7 structures
Into.Slide and lock in the chute that upper slide 3-1 upper ends can be in the horizontal direction, the lower end of lower skateboard 3-2 by loose-leaf 3-5 and
Lower cone 3-7 is connected, and upper slide 3-1 and lower skateboard 3-2 is combined together by backrest button 3-3, and lower skateboard 3-2 can be with upper slide
3-1 slide and rotate, between two plates can with the slip of upper slide 3-1 upper ends slide in opposition so as to change the total of two slide plates
Length.The chute that upper slide 3-1 can go up in the horizontal direction as needed is arbitrarily moved, and is fixed calmly by locknut 3-6
Position so that the size and horizontal level of the upper end open on collecting bin 3 also change therewith, i.e., received by changing the material of collecting bin
Collect area's size so as to obtain the product of any particle size range, reach traditional sieving purpose.As the upper slide of collecting bin 3
3-1 is placed on certain position, is exported in collecting bin 3 and sampled, and sample granularity meets the requirements.
As shown in figure 3, the direction of arrow of pneumatic separation device left and right sides horizontal direction refers to the flow direction of wind, pneumatic separation device
The arrow in inner horizontal direction is the flow direction of dust, due to the lighter in weight of dust, be can be ignored, and is blown in wind
Under effect, can move in the horizontal direction.The arrow obliquely of the rightmost side refers to the direction of motion of the too big particle of granularity, is entered
Tailing storehouse 4, the arrow obliquely of the leftmost side refers to the direction of motion of the too small particle of granularity, and into tailing storehouse 4, middle is several
Individual arrow obliquely refers to the direction of motion of the particle of satisfactory different grain size scope, the material point of different grain size scope
In not entering different collecting bins 3.What is be applicable in the figure is only needed to except degranulation larger material and the less thing of particle
During material, it is not necessary to be selectively removed the situation of the material of specified particle size scope.
As shown in figure 4, current limiting plate 6 is vertically provided at air inlet, the upper end of current limiting plate 6 is fixed on the inwall of housing,
And current limiting plate 6 is the Collapsible structure for moving up and down, it includes movable part and fixed part, and movable part is transported up and down relative to fixed part
When dynamic, intake can be adjusted.
Wind direction adjusting plate 5 is arranged on the lower section of current limiting plate 6, and wind direction adjusting plate 5 is movably arranged near one end of air inlet
On housing, and positioned at the lower section of current limiting plate 6, wind direction adjusting plate 5 is movably arranged on support away from one end of air inlet, Ke Yi
It is fixed on support, it is also possible to disassembled from support.Wind direction adjusting plate 5 can be certain along the connection end rotation with housing
Angle adjusts the angle of inclination of wind direction adjusting plate 5, and then adjusts the wind direction of air intake.
Implication for each arrow is identical with Fig. 3, will not be repeated here.Compared to the content shown in accompanying drawing 3, figure
Three upper end opens of collecting bin 3 in 4 do not cover the median particle size scope after removing larger particles and smaller particle,
In the range of median particle size, the material of some particle size range is undesirable, now, by upper slide 3-1 in the horizontal direction
Mobile, the scope for covering the upper end open of collecting bin 3 does not include the part, and the material for falling into the position falls directly into tailing storehouse
In 4, and then the material particles of specified particle size scope are have selected, and by undesirable feed separation, improve the matter of product
Amount.
The method that using above-mentioned pneumatic separation device granule materials are carried out with selection by winnowing, is comprised the following steps：
1) air quantity and wind direction of air intake are adjusted for specific granule materials, varigrained material is fallen in different positions
Put place；
2) method by sampling determines varigrained material position；
3) particle size range of the product according to setting, adjusts the coverage of collection portion；
4) air inlet of pneumatic separation device is connected with air blower, air outlet is connected with air-introduced machine, absorbing quantity is more than air blast
Amount；
5) material A enters selection by winnowing passage 2 by feeding warehouse 1, carries out selection by winnowing, and the product after selection by winnowing is collected.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to invention protection domain
Limitation, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not required to
The various modifications or deformation made by paying creative work are still within the scope of the present invention.
Claims (10)
1. a kind of pneumatic separation device of granule materials, it is characterised in that：Including device body, feeding warehouse and collecting bin；
Wherein, described device body is the hollow structure surrounded by housing, is set in the left and right sides of device body and is respectively provided with
There are air inlet and air outlet, air inlet and the coaxial setting of air outlet, the wind flow passage between air inlet and air outlet constitutes wind
Gating road, the space below selection by winnowing passage is the chamber that gathers materials；
The feeding warehouse be arranged on device body upper end, and with the selection by winnowing channel connection；
The quantity of the collecting bin is at least two, along wind flow directional spreding in the lower section of selection by winnowing passage, each collecting bin bag
Collection portion and the blanking portion being arranged on below collection portion are included, the upper end open in blanking portion is relative with the lower ending opening of collection portion, institute
The A/F along wind flow direction for stating collection portion can adjust, and the lower ending opening in blanking portion extends to the outside of the housing；
In the chamber that gathers materials, remove collecting bin and taken up space, remaining space constitutes tailing storehouse, and tailing is provided with below storehouse
Discharging opening.
2. pneumatic separation device according to claim 1, it is characterised in that：The collection portion includes Part I and second
Point, this two parts is Collapsible structure, the upper end of Part I and Part II with the water for being arranged on the enclosure interior
Plate rail road is flexibly connected, and the lower end of Part I and Part II connects with the left and right sides activity of blanking portion upper end open respectively
Connect, and setting is sealed between the side and the housing of Part I and Part II.
3. pneumatic separation device according to claim 2, it is characterised in that：The length of the horizontal rail and the length of selection by winnowing passage
Degree is equal.
4. pneumatic separation device according to claim 2, it is characterised in that：The Part I and Part II include upper cunning
Plate and lower skateboard, are flexibly connected between upper slide and lower skateboard by track, along the motion of track, realize upper slide and downslide
Move toward one another and opposite motion between plate,.
5. pneumatic separation device according to claim 1, it is characterised in that：The air inlet is provided with current limiting plate, the limit
Stream plate is Collapsible structure.
6. pneumatic separation device according to claim 5, it is characterised in that：The air inlet is provided with wind direction adjusting plate, wind
It is flexibly connected on the housing to the outer end of adjustable plate, the inner is flexibly connected with the support being fixed on housing, adjusts wind direction
Section plate realizes the regulation to wind direction along being rotated to an angle with the link position of housing.
7. pneumatic separation device according to claim 6, it is characterised in that：The outer end of the wind direction adjusting plate is located at the current limliting
The lower section of plate.
8. pneumatic separation device according to claim 6, it is characterised in that：The air inlet is additionally provided with deflection plate, baffling
Plate is located at the outside of wind direction adjusting plate.
9. pneumatic separation device according to claim 1, it is characterised in that：The feed opening of the feeding warehouse is rectangle, and under
The length of material mouth is equal with the width of the cross section of selection by winnowing passage.
10. the method for granule materials being carried out with selection by winnowing using claim 1-9 any pneumatic separation devices, it is characterised in that：Bag
Include following steps：
1) air quantity and wind direction of air intake are adjusted for specific granule materials, varigrained material is fallen in different positions
Place；
2) method by sampling determines varigrained material position；
3) according to the particle size range of setting product, the coverage of collection portion is adjusted；
4) air inlet of pneumatic separation device is connected with air blower, air outlet is connected with air-introduced machine, absorbing quantity is more than the blow rate required；
5) blanking in aweather being gated by feeding warehouse, carries out selection by winnowing, and the product after selection by winnowing is collected.
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| CN201611177385.4A CN106733640A (en) | 2016-12-19 | 2016-12-19 | The pneumatic separation device and wind selection method of a kind of granule materials |
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| CN201611177385.4A CN106733640A (en) | 2016-12-19 | 2016-12-19 | The pneumatic separation device and wind selection method of a kind of granule materials |
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| CN107952685A (en) * | 2017-11-30 | 2018-04-24 | 泗县三虎粮油机械有限公司 | A kind of automatic tune wind type multistage pneumatic separation grains separating machine |
| CN108554807A (en) * | 2018-01-09 | 2018-09-21 | 贵州珉汇循环经济股份有限公司 | A kind of adjustable building waste pneumatic separation device |
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| CN110227649A (en) * | 2019-05-31 | 2019-09-13 | 南京瑞栖智能交通技术产业研究院有限公司 | Inexpensive fine particle based on wind-force quickly throws subsystem and method |
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