CN205808666U - A kind of natural grains of sand discharger of controlled speed angle - Google Patents
A kind of natural grains of sand discharger of controlled speed angle Download PDFInfo
- Publication number
- CN205808666U CN205808666U CN201620343647.9U CN201620343647U CN205808666U CN 205808666 U CN205808666 U CN 205808666U CN 201620343647 U CN201620343647 U CN 201620343647U CN 205808666 U CN205808666 U CN 205808666U
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- China
- Prior art keywords
- sand
- inlet tube
- detachable shell
- grains
- discharger
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Abstract
This utility model provides the natural grains of sand discharger of a kind of controlled speed angle, including detachable shell, rotatable ferrum circle, " z " shape sand inlet tube, six wing propellers, drive bearing, described detachable shell is oblate tubular, the inwall of detachable shell is provided with annular slide track, rotatable ferrum circle is connected at the annular slide track of detachable shell, described " z " shape sand inlet tube is fixed on described rotatable ferrum circle, strip-shaped clamp groove and sand shot mouth is had on described detachable shell, one end of " z " shape sand inlet tube is stretched out from described strip-shaped clamp groove, stir " z " shape sand inlet tube, realize rotation and the activity in limited range in strip-shaped clamp groove of " z " shape sand inlet tube of rotatable iron ring；Six wing propellers are connected to drive bearing inner ring, this discharger can the emission rate grains of sand controlled with angle, simple in construction, easy to operate, it combines the instruments such as high-speed photography can study grain bed collision process.
Description
Technical field
This utility model relates to the natural grains of sand discharger of a kind of controlled speed angle, belongs to field of mechanical technique.
Background technology
The impact that wind-driven sediment is brought is ubiquitous, its consequence caused have become as world's great environmental problem it
One.Due to a large amount of felling of vegetation in world wide, the spreading of desert area wind-driven sediment, desertification of land, desertification is more come
The most serious.There have been about 900,000,000 people, 100 countries to be affected by desertification by 1998.More frighteningly, it is contemplated that arrive
2025, these numerals also can be double.At present, the global desert gross area oneself reach 7,000,000 sq-kms, about face, earth land
All there is a certain degree of desertification phenomenon in long-pending 25%.Every year, the soil the most just having 41,500,000 hectares loses production
Ability.The severely afflicated area of China's desertification especially, desert, Gobi desert and desertification land area have accounted for area
About 27.64%, moreover, only in the nineties in 20th century, the area of China's desertification land is about with annual 2460 square thousand
The speed expanded of rice.West area is due to the impact of arid climate, and the felling of vegetation in addition, some area has been to look as far as the eye can to hope the most
The not sad and dreary sight of the end.But, if simply desertification, desertification, its impact is the most limited, but with desertification, desert
Change, also have much more serious harm.In western part of China and middle part, large-scale wind-driven sediment constantly destroys the mankind's
House, road, when the various facilities of railway, even disaster occur, therefore many personnel die.Even if near littoral
District, is also subjected to wrecking of extensive wind-driven sediment.Our feelings seeing capital day, Beijing dust storm the most more than once
Scape, we the most more than once see that dust storm one tunnel as devil sweeps across the east to motherland from west area.Nowadays, drift
Floating aerial sand and dust the most increasingly threaten our health, it will be seen that the sickness rate of respiratory tract disease is
Through beginning to ramp up.Chemistry pollution prevention, desertification, or even it is the most very urgent to prevent and treat extensive wind-driven sediment, sandstorm.
Wind-driven sediment is mainly carried out by saltation mode, owing to wind speed increases, takes up some earth's surface grains of sand, and these grains of sand exist
After accelerating via wind in the air, clash into the earth's surface grains of sand and splash more grains of sand.Along with the grains of sand splash get more and more, scale is increasingly
Greatly, large-scale wind-driven sediment is ultimately formed.During this, rebound and splash the mistake of other earth's surface grains of sand in sand dashed sand earth's surface
Journey is a crucial step, in blown sand physics, referred to as grain-bed collision process.Grain-bed collision process is grains of sand saltations
One key issue, scholars so evaluate: bed crash analysis of grain and mechanical modeling thereof are the work of wind-driven sediment study mechanism
Core, be to disclose the most essential steps that contacts and unique maximally effective way between grains of sand microscopic motion and macroscopic view stream motion
Footpath.
Due to sand particle size tiny (0.05-0.5mm), the characteristic such as irregular, the experiment of grain-bed collision is ground the most in the world
Study carefully the device or instrument also not having to launch the grains of sand under stream yardstick.It is bigger that this type of experiment of great majority all have employed particle diameter,
More regular substitution material such as bead, PVC material etc..But, substitution material material, particle diameter, the most all with natural sand
Grain greatly differs from each other, and its result cannot be suitable for the nature grains of sand at all.The device of the grains of sand under stream yardstick can be launched owing to lacking
Or instrument, nature grain-bed collision process is directly measured in experiment and the grains of sand act the characteristic that jumps, the work of distribution function has been stagnated many
Year.
Utility model content
This utility model provides the natural grains of sand discharger of a kind of controlled speed angle, can solve an above-mentioned difficult problem, can send out
The grains of sand that firing rate degree is controlled with angle, it combines the instruments such as high-speed photography can study grain bed collision process.
For solving above technical problem, this utility model following technical scheme of offer: the nature of a kind of controlled speed angle
Grains of sand discharger, including detachable shell, rotatable iron ring, " z " shape sand inlet tube, six wing propellers, drive bearing, described can
Dismounting shell is oblate tubular, and the inwall of detachable shell is provided with annular slide track, and connecting at the annular slide track of detachable shell can
Rotating iron ring, described " z " shape sand inlet tube is fixed on described rotatable iron ring, described detachable shell has strip-shaped clamp groove and penetrates
Husky mouth, one end of " z " shape sand inlet tube is stretched out from described strip-shaped clamp groove, stirs " z " shape sand inlet tube, it is achieved the rotation of rotatable iron ring
The activity in limited range in strip-shaped clamp groove of " z " shape sand inlet tube；Six wing propellers are connected to drive bearing inner ring, described biography
The outer ring of dynamic bearing is connected to the middle part of detachable shell inwall, and the power transmission shaft of described six wing propellers connects motor；Described biography
Dynamic bearing is cascaded propeller with rotatable iron ring；The other end of " z " shape sand inlet tube extends the rotation of six wing propellers
Outside circle edge；The space of closing is formed after the two ends of detachable shell are connected lid.
Further, described detachable shell is made up of two semi circular shells, and one end of two semi circular shells is articulated and connected, another
End uses buckle moveable connection method to connect.
Further, described natural grains of sand discharger includes base, and the upper surface of base is arc, is just suitable for
The periphery of detachable shell.
Further, described sand shot mouth be shaped as the strip along detachable shell, from the middle part of detachable shell
Along to middle and lower part.
Further, described base be material be metal, base top both sides are provided with fixing device, utilize bolt by nature
Grains of sand discharger is fixed.
Further, the sand shot port of described " z " shape sand inlet tube is towards contrary with the direction of rotation of six wing propellers.
Further, the notch both sides in strip-shaped clamp groove are provided with regulation scale.
The natural grains of sand discharger of this controlled speed angle that this utility model relates to, can emission rate and angle can
The grains of sand of control, it combines the instruments such as high-speed photography can study grain bed collision process.
Accompanying drawing explanation
Fig. 1 is the natural grains of sand discharger cut-away view of this utility model a kind of controlled speed angle；
Fig. 2 is the natural grains of sand discharger front view of this utility model a kind of controlled speed angle；
Fig. 3 is the natural grains of sand discharger detachable shell structure chart of this utility model a kind of controlled speed angle；
Fig. 4 is the natural grains of sand discharger detachable shell structure chart of this utility model a kind of controlled speed angle；
Fig. 5 is natural grains of sand discharger " z " the shape sand inlet tube structural representation of this utility model a kind of controlled speed angle
Figure；
Fig. 6 is natural grains of sand discharger six wing propeller arrangement signal of this utility model a kind of controlled speed angle
Figure；
In figure, labelling is as follows: 1, detachable shell；2, rotating iron ring；3, " z " shape sand inlet tube；4, six wing propeller；
5, drive bearing；6, base；7, strip-shaped clamp groove；8, buckle；9, hinge；10, annular slide track.
Detailed description of the invention
As it is shown in figure 1, the natural grains of sand discharger of controlled speed angle include detachable shell 1, rotatable iron ring 2,
" z " shape sand inlet tube 3, six wing propeller 4, drive bearing 5, described detachable shell 1 is oblate tubular, detachable shell 1 interior
Wall is provided with 10 annular slide tracks, connects rotatable iron ring at the annular slide track of detachable shell, and described " z " shape sand inlet tube 3 is fixed on
Described rotatable iron ring, described detachable shell has strip-shaped clamp groove 7 and sand shot mouth, and one end of " z " shape sand inlet tube 3 is from described
Strip-shaped clamp groove is stretched out, and stirs " z " shape sand inlet tube 3, it is achieved the rotation of rotatable iron ring 2 and " z " shape sand inlet tube 3 are in strip-shaped clamp groove
Activity in limited range；Six wing propellers are connected to drive bearing inner ring, and the outer ring of described drive bearing is connected to detachably
The middle part of outer casing inner wall, the power transmission shaft of described six wing propellers connects motor；Described drive bearing is propeller and rotatable ferrum
Circle is cascaded；The other end of " z " shape sand inlet tube 3 extends outside the rotation circle edge of six wing propellers 4.
Detachable shell is made up of two semi circular shells, and one end of two semi circular shells is articulated and connected, and closes as it is shown on figure 3, use
Page 9 connects, and the other end uses buckle 8 moveable connection method to connect.
Natural grains of sand discharger includes base 6, and the upper surface of base is arc, is just suitable for detachable shell
Periphery.
Sand shot mouth be shaped as the strip along detachable shell, from the middle part of detachable shell along to middle and lower part.
Base 6 is metal for material, and base top both sides are provided with fixing device, utilizes bolt by nature grains of sand discharger
Fixing.
The sand shot port of " z " shape sand inlet tube 3 is towards contrary with the direction of rotation of six wing propellers 4.
It is provided with regulation scale in the notch both sides of strip-shaped clamp groove.
Experimental procedure is as follows: by drive bearing, propeller is cascaded with rotatable iron ring；Rotatable iron ring is even
Put into the slideway of detachable shell with propeller and " z " shape sand inlet tube, be adjusted to test in required angle:
(1) open motor, after revolution speed of propeller is stable, put into the appropriate grains of sand at " z " shape sand inlet；
(2) grains of sand whereabouts can be hit by propeller, hits rear sand particle velocity and increases, and some grains of sand flies from sand shot mouth
Go out, finally impact on bed surface；
(3) regulate the angle of rotating iron ring, thus it is possible to vary grains of sand angle after sand shot mouth flies out, namely impact
Incident angle；
(4) current intensity adjusted by motor by controlling terminal regulates motor speed, finally plays change sand
The incidence rate of grain；
(5) combine the means such as high-speed photography and can clearly observe the overall process that bed surface is clashed into by the grains of sand.
Experimental result is as follows:
By means of the help of this instrument, having carried out 1024 grain-bed impact tests, the natural grains of sand are in grain-bed collision
Behavior greatly differs from each other with substitute particles.Result includes:
(1) from Djaoued Beladjine (07) use 6mm PVC material experimental result different, nature the grains of sand grain-
Along with the increase of impact velocity linearly reduces, (its experiment shows the angle of rebound of bed collision rift with impact velocity close relation
Both are unrelated).
(2) different from Djaoued Beladjine (07) result, ball rebound velocity and the ratio of impact velocity and impact velocity
Relevant, along with the increase of impact velocity linearly increases (its use shows that both are unrelated).And the plastics circle of Francois (2000)
The glass bead of dish (glass bead) experiment and Mark Gordon (2011)-sand bed collision result is the most contrary.
(3) granule sputtering angle is relevant with impact velocity, increases along with the increase of impact velocity.
(4) splash granule number relevant with angle of attack, reduce along with the increase of angle of attack.
(5) certain, experiment also demonstrate that forefathers test in many conclusions, such as: angle of rebound is along with the increasing of angle of attack
Increase greatly；Ball rebound velocity reduces along with the increase of angle of attack with the ratio of impact velocity；Sputtering angle is along with the angle of shock
Degree increase and increase；Splash granule number to increase along with the increase of impact velocity.
(6) 1024 groups of data are grouped by we simultaneously, calculate meansigma methods, give each microphysics amount with impact
Speed, the functional relationship of angle of attack.Give the distribution function form of each microphysics, such as: angle of rebound is obeyed simultaneously
Logarithm normal distribution；Ball rebound velocity and the ratio Normal Distribution etc. of impact velocity.
In sum, the performance in grain-bed collision of the natural grains of sand is increasingly complex, each microphysics amount often with incidence
Each parameter of granule has relation, and mechanism existence influences each other, and intercouples.And particle diameter substitution material irregular, big
Show, the most relevant with wherein certain parameter.Some qualitative relationships is the most inconsistent.This for help understand granule with
The interaction type meaning of bed surface is huge.
The particle diameter that this device can launch granule is the most unrestricted, not can only launch the nature grains of sand.
Detailed description of the invention described in the utility model is not intended that the restriction to the application scope, every new in this practicality
Within the spirit of type design and principle, any amendment, equivalent and the improvement etc. that one of skill in the art can make are equal
Within protection domain of the present utility model should be included in.
Claims (7)
1. the natural grains of sand discharger of a controlled speed angle, it is characterised in that include detachable shell, rotatable ferrum
Circle, " z " shape sand inlet tube, six wing propellers, drive bearing, described detachable shell is oblate tubular, the inwall of detachable shell
Be provided with annular slide track, at the annular slide track of detachable shell, connect rotatable iron ring, described " z " shape sand inlet tube be fixed on described can
Rotating iron ring, described detachable shell has strip-shaped clamp groove and sand shot mouth, one end of " z " shape sand inlet tube is from described strip-shaped clamp groove
Stretch out, stir " z " shape sand inlet tube, it is achieved the rotation of rotatable iron ring and " z " shape sand inlet tube are in strip-shaped clamp groove in limited range
Activity；Six wing propellers are connected to drive bearing inner ring, and the outer ring of described drive bearing is connected to detachable shell inwall
Middle part, the power transmission shaft of described six wing propellers connects motor；Described drive bearing is connected on one propeller and rotatable iron ring
Rise；The other end of " z " shape sand inlet tube extends outside the rotation circle edge of six wing propellers；After the two ends of detachable shell are connected lid
Form the space closed.
The natural grains of sand discharger of a kind of controlled speed angle the most according to claim 1, it is characterised in that described can
Dismounting shell is made up of two semi circular shells, and one end of two semi circular shells is articulated and connected, and the other end uses buckle moveable connection method
Connect.
The natural grains of sand discharger of a kind of controlled speed angle the most according to claim 1, it is characterised in that described from
So grains of sand discharger includes base, and the upper surface of base is arc, is just suitable for the periphery of detachable shell.
The natural grains of sand discharger of a kind of controlled speed angle the most according to claim 1, it is characterised in that described in penetrate
Husky mouth be shaped as the strip along detachable shell, from the middle part of detachable shell along to middle and lower part.
The natural grains of sand discharger of a kind of controlled speed angle the most according to claim 3, it is characterised in that the described end
Seat is metal for material, and base top both sides are provided with fixing device, utilize bolt to be fixed by nature grains of sand discharger.
The natural grains of sand discharger of a kind of controlled speed angle the most according to claim 1, it is characterised in that described
The sand shot port of " z " shape sand inlet tube is towards contrary with the direction of rotation of six wing propellers.
The natural grains of sand discharger of a kind of controlled speed angle the most according to claim 1, it is characterised in that in bar shaped
The notch both sides of draw-in groove are provided with regulation scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620343647.9U CN205808666U (en) | 2016-04-22 | 2016-04-22 | A kind of natural grains of sand discharger of controlled speed angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620343647.9U CN205808666U (en) | 2016-04-22 | 2016-04-22 | A kind of natural grains of sand discharger of controlled speed angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205808666U true CN205808666U (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620343647.9U Withdrawn - After Issue CN205808666U (en) | 2016-04-22 | 2016-04-22 | A kind of natural grains of sand discharger of controlled speed angle |
Country Status (1)
| Country | Link |
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| CN (1) | CN205808666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758613A (en) * | 2016-04-22 | 2016-07-13 | 兰州大学 | Natural sand grain emission device capable of controlling speed and angle |
| CN115195981A (en) * | 2022-07-21 | 2022-10-18 | 江苏科技大学 | Electric pod propulsion device without slip ring and assembly method thereof |
-
2016
- 2016-04-22 CN CN201620343647.9U patent/CN205808666U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758613A (en) * | 2016-04-22 | 2016-07-13 | 兰州大学 | Natural sand grain emission device capable of controlling speed and angle |
| CN115195981A (en) * | 2022-07-21 | 2022-10-18 | 江苏科技大学 | Electric pod propulsion device without slip ring and assembly method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20171212 |
|
| AV01 | Patent right actively abandoned |