CN108198486A - A kind of teaching aid - Google Patents
A kind of teaching aid Download PDFInfo
- Publication number
- CN108198486A CN108198486A CN201810188458.2A CN201810188458A CN108198486A CN 108198486 A CN108198486 A CN 108198486A CN 201810188458 A CN201810188458 A CN 201810188458A CN 108198486 A CN108198486 A CN 108198486A
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- flow passage
- branch flow
- turnout
- teaching aid
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 126
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010931 gold Substances 0.000 claims abstract description 9
- 229910052737 gold Inorganic materials 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims description 64
- 238000000926 separation method Methods 0.000 claims description 44
- 244000035744 Hura crepitans Species 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 15
- 238000004062 sedimentation Methods 0.000 claims description 11
- 239000004429 Calibre Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005452 bending Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 239000013049 sediment Substances 0.000 description 6
- 238000005086 pumping Methods 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The present invention provides a kind of teaching aid, is related to realia field.A kind of teaching aid, including provisioning component and the water inlet being sequentially communicated, bend, water outlet.Provisioning component is used to provide arsenicbearing gold ores to water inlet.During entire displaying, flow is flowed for dynamic, when flow passes through the bending section in bend, learner can more intuitively observe the bend secondary flow phenomenon occurred in bending section, i.e. when flow passes through bend, flow is not simply to do curvilinear motion, but helically formula downstream moves, and the circulation of a closing is generated on cross section.Since the displaying of the teaching aid is more intuitive, lively, explaining bend secondary flow principle for learner by the teaching aid can make learner be easier to understand bend secondary flow principle, and learner is made to reach better learning effect.
Description
Technical field
The present invention relates to realia field, in particular to a kind of teaching aid.
Background technology
In the water systems such as nature or the river of hydraulic engineering, water-sediment movement follows a kind of important characteristics of motion principle ---
The principle of bend secondary flow.I.e. when river is more straight, flow moves in a straight line, and the distribution of silt is also substantially in flow
Even；And when river is bend, flow is not simply to do curvilinear motion, but helically formula downstream moves,
And the circulation of a closing is generated on cross section.Displaying teaching aid cannot be fine used in study bend secondary flow principle at present
Ground shows Solution of Flow in Curved Channel situation, learner is caused to face many difficulties when learning the principle, understanding effect is poor.
Invention content
The purpose of the present invention is to provide a kind of teaching aids, can more vivo show that the bend secondary flow of water-sediment movement is former
Reason, makes learner be easier to understand the principle, reaches better learning effect.
What the embodiment of the present invention was realized in：
A kind of teaching aid, including provisioning component and the water inlet being sequentially communicated, bend, water outlet.Provisioning component be used for
Water inlet provides arsenicbearing gold ores.
In an embodiment of the present invention, provisioning component includes sandbox.Sandbox is used to launch the grains of sand to water inlet.
In an embodiment of the present invention, sandbox be equipped with through-hole and with the matched stopple of through-hole, stopple optionally beats
Through-hole is closed on or off.
In an embodiment of the present invention, bend includes the first branch flow passage and the second branch flow passage.First branch flow passage and
The first separation levee is provided between two branch flow passages.The horizontal plane of first branch flow passage is higher than the horizontal plane of the second branch flow passage.Water outlet
Including first outflux and second outflux.First branch flow passage is interconnected with first outflux, the second branch flow passage with
Second outflux is interconnected.
In an embodiment of the present invention, the second branch flow passage is equipped with sedimentation basin.Sedimentation basin is opposite with the first separation levee to be set
It is placed in the both sides of the second branch flow passage.
In an embodiment of the present invention, the second separation levee is additionally provided between the first branch flow passage and the second branch flow passage.
First separation levee includes the first end and second end being oppositely arranged, and second end is located at side of the first end far from water inlet.Second
Indwelling notch is so that the first branch flow passage is interconnected with the second branch flow passage between end and the second separation levee.The horizontal plane of notch is higher than
The horizontal plane of second branch flow passage.
In an embodiment of the present invention, the second branch flow passage includes first segment and second segment.First segment is located at second point
It flows between dike and water inlet, second segment is between the second separation levee and second outflux.Third point is provided in second segment
Dike is flowed, second segment is divided into the first turnout and the second turnout by third separation levee.First turnout is by third separation levee and second point
Stream dike limits to be formed.The horizontal plane on the first turnout is higher than the horizontal plane on the second turnout.Second outflux goes out including the first turnout
Mouth and the outlet of the second turnout, the outlet of the first turnout are interconnected with the first turnout, and the outlet of the second turnout is mutually interconnected with the second turnout
It is logical.
In an embodiment of the present invention, the inlet calibre on the first turnout is more than the inlet calibre on the second turnout.
In an embodiment of the present invention, water outlet is connected with filtration members, and filtration members are used to filter out in the grains of sand.
A kind of teaching aid, including provisioning component and the water inlet being sequentially communicated, bend, water outlet.Provisioning component includes water
Pump.Water outlet is connect with water pump by first pipe, and water inlet is connect with water pump by second pipe.Water pump is used for water inlet
Arsenicbearing gold ores are provided.
The embodiment of the present invention at least has the following advantages that or advantageous effect：
The embodiment of the present invention provides a kind of teaching aid, is mainly used as explanation auxiliary demonstration tool, convenient for learner preferably
Understand the bend secondary flow principle in water-sediment movement.The teaching aid mainly include provisioning component and be sequentially communicated water inlet, bend,
Water outlet.Provisioning component is used to provide arsenicbearing gold ores to water inlet, and arsenicbearing gold ores are flowed in bend along bend, finally from water outlet
Mouth outflow.Entirely during displaying, flow is flowed for dynamic, and when flow passes through the bending section in bend, learner can be more
It is visually observed that the bend secondary flow phenomenon occurred in bending section, i.e., when flow passes through bend, flow is not simple
Do curvilinear motion, but helically formula downstream moves, and the circulation of a closing is generated on cross section.Due to the religion
The displaying of tool is more intuitive, lively, and therefore, explaining bend secondary flow principle for learner by the teaching aid can be such that learner more holds
Readily understood bend secondary flow principle, makes learner reach better learning effect.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram of teaching aid provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of bend provided in an embodiment of the present invention；
Fig. 3 is the structure diagram of fixed frame provided in an embodiment of the present invention；
Fig. 4 is the structure diagram of scoop provided in an embodiment of the present invention.
Icon：100- teaching aids；110- provisioning components；112- sandboxs；114- through-holes；116- water pumps；118- first pipes；
120- second pipes；130- water inlets；150- bends；The first branch flow passages of 152-；The second branch flow passages of 154-；156- first is shunted
Dike；The second separation levees of 158-；160- notches；First outflux of 162-；164- third separation levees；The first turnouts of 166-；168-
Second turnout；The first turnouts of 170- export；The second turnouts of 172- export；174- sedimentation basins；180- fixed frames；182- first is collected
Pond；The second collecting pits of 184-；186- third collecting pits；The first filtration members of 188-；The second filtration members of 190-；192- thirds filter
Part；194- scoops.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be configured to arrange and design with a variety of different.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without creative efforts belong to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the embodiment of the present invention, it should be noted that if there is term " on ", " under ", " level ", " interior " etc.
The orientation or position relationship of instruction are usual when being used based on orientation shown in the drawings or position relationship or the invention product
The orientation or position relationship put, are for only for ease of the description present invention and simplify description rather than instruction or imply meaning
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention's
Limitation.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and it is not intended that instruction or hint are opposite
Importance.
In addition, term " level " is not offered as requiring component abswolute level, but can be slightly tilted.
In the description of the embodiment of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, if occurring
Term " setting ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or removable
It unloads connection or is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment
Fig. 1 is please referred to, Fig. 1 show the structure diagram of teaching aid 100.The present embodiment provides a kind of teaching aids 100, main to use
In auxiliary interpretation staff to student show water-sediment movement in bend secondary flow phenomenon, in order to student more fully understand and grasp it is curved
Road circulation principle.Bend secondary flow principle in hydraulic engineering how preferably Jiang Shui and Sha carry out separation be of great significance,
Therefore understands that it is of great significance with grasp bend secondary flow principle for water conservancy working person.
Teaching aid 100 provided in this embodiment is mainly including provisioning component 110 and the water inlet 130, the bend that are sequentially communicated
150th, water outlet (not marked in figure).Provisioning component 110 is used to provide arsenicbearing gold ores to water inlet 130, in order to which student can be
The bend secondary flow phenomenon in water-sediment movement is observed in bend 150.Meanwhile flowing of the flow in bend 150 makes displaying more
Vividly, student is contributed to more fully understand and grasp bend secondary flow principle.
For the state that more preferable simulation silt is flowed with flow, in the present embodiment, provisioning component 110 can also include sand
Box 112, sandbox 112 are used to launch the grains of sand to water inlet 130.Sandbox 112 is located at the top of water inlet 130, sandbox 112 continue into
Leakage is husky in the mouth of a river 130, and when flow reaches 112 lower section of sandbox, flow can take away the grains of sand leaked out in sandbox 112, and carry sand
Grain is entered by water inlet 130 in bend 150 together.To ensure the smooth leakage of the grains of sand, sandbox 112 can be with further reference to hourglass
Shape be configured (certainly, in other embodiment, the shape of sandbox 112 is not limited, as long as the grains of sand can be launched into flow
).In addition, more convenient in order to recycle the grains of sand, the grains of sand used in the present embodiment can use simulation silt, simulate silt
Single particle size is bigger than general sand size.
Certainly, in other embodiment, the grains of sand can also be mixed with water in advance, then the arsenicbearing gold ores mixed are straight
It connects and is supplied to water inlet 130.
When teaching aid 100 leaves unused, for ease of the storage of the grains of sand in sandbox 112, sandbox 112 can further set through-hole
114 and with 114 matched stopple (not shown) of through-hole.Through-hole 114 can be opened or be closed to stopple, when imparting knowledge to students
During displaying, through-hole 114 is opened, the grains of sand is allow to leak to water inlet 130；In the state of being shown without teaching, it can close
Through-hole 114 has stored the grains of sand for teaching displaying next time.
To improve the degree of automation of provisioning component 110, in the present embodiment, provisioning component 110 can also include water pump
116.After water pump 116 is powered, the water at water source can be pumped to water inlet 130, facilitate interpretation staff can be quickly to water movement
Situation is explained.
In the present embodiment, the opening and closing of water pump 116 are controlled by rotary switch (not shown in figure 1), and rotary switch is opened
When opening water pump 116, there is first grade and two kinds of selections of second gear, first grade of pumping water is larger, can simulate the flow of wet season
Situation；Second gear pumping water is smaller, can simulate the streamflow regime in dry season.The setting can be in order to student's paired observation bend
The water of water, flow velocity size and bend secondary flow Fen Shui, the difference of point husky effect in circulation principle.
To improve the recycling rate of waterused at water source, can water outlet and water pump 116 further be passed through first in the present embodiment
Pipeline 118 connects, and water inlet 130 is connected with water pump 116 by second pipe 120.Then water pump 116 can flow out water outlet
Water-circulating pump is sent to water inlet 130.The setting also allows for the carrying of teaching aid 100, reduces the trouble that user individually carries water source.
Certainly, in other embodiment can also using manually to water inlet 130 water inlet by the way of.
In the present embodiment, bend 150 can include the first branch flow passage 152 and the second branch flow passage 154.First branch flow passage 152
And second be provided with the first separation levee 156 between branch flow passage 154.Wherein the horizontal plane of the first branch flow passage 152 is higher than the second tributary
The horizontal plane in road 154, i.e. the first branch flow passage 152 relative to the second branch flow passage 154 be convex bank side, the second branch flow passage 154 relative to
First branch flow passage 152 is concave bank side.After the band sand flow of water inlet 130 flows into bend 150, flow and the grains of sand all will be by first
Separation levee 156 shunts.
The shunting feelings that the variation of the concave-convex degree of first branch flow passage 152 and the second branch flow passage 154 will change flow and the grains of sand
Condition.For student is made to be able to observe that the change of tapping condition that the variation due to runner bumps degree is brought, in the present embodiment
It is adjustable that the plane of the plane of first branch flow passage 152 and the second branch flow passage 154 can be set as to height, to reach the concave-convex journey of variation
The purpose of degree.For example, the plane of the first branch flow passage 152 and the fixed part of teaching aid 100 can be slidably connected, make the first branch flow passage
The height of 152 plane can be adjusted.The plane of second branch flow passage 154 can also be slided with the fixed part of teaching aid 100 to be connected
It connects, is adjusted the height of the plane of the second branch flow passage 154.
The change in location of first separation levee 156 will also cause the width of the first branch flow passage 152 and the second branch flow passage 154 to become
Change, and then lead to the variation of the tapping condition of flow and the grains of sand.Position for student is enable to recognize the first separation levee 156 becomes
Change and flow, the grains of sand tapping condition variation between relationship, in the present embodiment, the position of the first separation levee 156 is adjustable.The
There are many adjustable set-up modes in one separation levee, 156 position, such as 156 bottom of the first separation levee is set multiple fixed strips (figure
In be not shown), water passage surface opens up multiple with the matched jack (not shown) of fixed strip, and fixed strip is inserted into different insert
The position that the first separation levee 156 can be realized in hole is adjusted.
In the present embodiment under 156 present position of the first separation levee, flow and grains of sand tapping condition are as follows：
When rotary switch opens first grade, the water of about 60vol% and the grains of sand of 80vol% can flow into the first branch flow passage
In 152, the water of about 40vol% and the grains of sand of 20vol% can be flowed into the second branch flow passage 154.
When rotary switch opens second gear, water stream will vary widely, and the water of about 60vol% will flow into
In second branch flow passage 154, the water of about 40vol% will be flowed into the first branch flow passage 152.Water is bigger, and the grains of sand enter second
Runner 154 is fewer, and the shunting of the grains of sand has small scale variation, but changes less, it is considered that substantially not in general teaching displaying
Become.
The second separation levee 158 is additionally provided between first branch flow passage 152 and the second branch flow passage 154.First separation levee 156 wraps
The first end (not marked in figure) being oppositely arranged and second end (not marked in figure) are included, second end is located at first end far from water inlet
130 side.Indwelling notch 160 between second end and the second separation levee 158 is so that the first branch flow passage 152 and the second branch flow passage
154 are interconnected.The horizontal plane of notch 160 is higher than the horizontal plane of the second branch flow passage 154.Notch 160 is provided with conducive to by the
The grains of sand in two branch flow passages 154 are shunted again, the grains of sand content being further reduced in the second branch flow passage 154.
Due to different, the practical hydraulic engineering of the sediment concentration flowed out in the first branch flow passage 152 and the second branch flow passage 154
In generally require to open up different water exports respectively for the first branch flow passage 152 and the second branch flow passage 154, by two kinds of flows should
With in different places.The quality that the flow flowed out in two runners is observed for ease of student is different, in the present embodiment, water outlet
Including first outflux 162 and second outflux (not marked in figure).First branch flow passage 152 and first outflux 162
It is interconnected, the second branch flow passage 154 is interconnected with second outflux.
Second branch flow passage 154 includes first segment (not marked in figure) and second segment (not marked in figure).Wherein, the first section
Between the second separation levee 158 and water inlet 130, second segment is between the second separation levee 158 and second outflux.In order to
Further point of sand is carried out to the flow in the second branch flow passage 154, third separation levee 164 is also provided in second segment.The
Second segment is divided into the first turnout 166 and the second turnout 168 by three separation levees 164.First turnout 166 is by third separation levee 164
It limits and is formed with the second separation levee 158.The horizontal plane on the first turnout 166 is higher than the horizontal plane on the second turnout 168.As shown in Figure 1,
The inlet calibre on the first turnout 166 is more than the inlet calibre on the second turnout 168.When the water in the second branch flow passage 154 is with huge
When impact force flows to notch 160, it can be restricted by the entrance on the second narrow turnout 168 of its side, in addition third separation levee 164
Backwater effect, be formed about whirlpool in notch 160, the remaining grains of sand are largely got rid of to notch 160 in first segment flow
Or there are the part grains of sand to enter in the first branch flow passage 152 simultaneously.
When it is first grade that rotary switch, which is opened, a large amount of water can be stopped by the entrance on the second turnout 168, and the water surface rises,
When the water surface is more than the notch 160 on side, water and sand will drain into the first branch flow passage 152 along notch 160, reach after the first shunting
Second of flood diversion sand discharge after dike 156.When rotary switch is opened as second gear, a large amount of water can be by the second turnout 168
Entrance stops, and the water surface rises, and when the water surface can not be more than the notch 160 on side, sand will be stayed on notch 160, reached after first
Second of sand discharge after separation levee 156.
Since the silt content on the first turnout 166 and the second turnout 168 is different, in order to facilitate observation of to the difference of effluent quality,
Second outflux includes the outlet 170 of the first turnout and the second turnout outlet 172 in the present embodiment, the first turnout outlet 170 with
First turnout 166 is interconnected, and the outlet 172 of the second turnout and the second turnout 168 are interconnected.Generally, after excessively sand, second
The water silt content of 172 outflow of turnout outlet is smaller compared with other outlets.
For the grains of sand content being further reduced in the second turnout 168, can also sedimentation basin 174 be set in first segment.Such as
Shown in Fig. 1,174 and first separation levee 156 of sedimentation basin is relatively arranged on the both sides of first segment.Sedimentation basin 174 is relative to first segment
To lower recess, to ensure the deposition effect of the grains of sand.When the flow of the second branch flow passage 154 is formed about whirlpool in notch 160, largely
After the grains of sand are thrown out of notch 160, the remaining major part grains of sand can be deposited in the sedimentation basin 174 on 160 opposite of notch, reach further
Reduce the purpose of the grains of sand in the second turnout 168.After the certain grains of sand of deposition in sedimentation basin 174, the grains of sand can be dug out.
With further reference to Fig. 2, Fig. 2 show the structure diagram of bend 150.It can be more clearly observed in Fig. 2
The horizontal plane height situation of each runner.
Fig. 3 is please referred to, Fig. 3 show the structure diagram of fixed frame 180.To further improve the portability of teaching aid 100,
Teaching aid 100 further includes fixed frame 180.With reference to Fig. 1 and Fig. 3 it is found that bend 150 is installed in fixed frame 180.Sandbox 112 and rotation
It turns on pass (not marking in Fig. 3) to be installed on fixed frame 180, water pump 116, first pipe 118, second pipe 120 are mounted on
In fixed frame 180, the portability of teaching aid 100 is substantially increased.
It will finally be concentrated by the flowing water of each outlet in this present embodiment and recycled again, to avoid the grains of sand to water pump
116 damage and convenient for being recycled to the grains of sand, is equipped with the first collecting pit 182, the second collecting pit 184 on fixed frame 180
And third collecting pit 186.First 162 and first collecting pit 182 of outflux is interconnected, the first turnout outlet 170 and the
Two collecting pits 184 are interconnected, and the second turnout outlet 172 is interconnected with third collecting pit 186.First collecting pit 182, second
Collecting pit 184 and third collecting pit 186 are interconnected with first pipe 118.First collecting pit 182, the second collecting pit
The 184th, first filtration members 188, the second filtration members 190, third filtration members 192 in third collecting pit 186 are set respectively, made in flow
The grains of sand filtered out by each filtration members, both achieved the purpose that collect the grains of sand, also avoid the excessive grains of sand and enter water pump 116 to water
Pump 116 damages.Filtration members can be common strainer.
Fig. 4 is please referred to, Fig. 4 show the structure diagram of scoop 194.For convenience of the collection of the grains of sand everywhere, can also be
Scoop 194 is configured in teaching aid 100.Containing cavities (not shown) on fixed frame 180 can also be set, facilitated common in mold
The storage of small instruments and tools arranges, such as can store scoop 194, bridge mark, landmark etc..
The operation principle of teaching aid 100 is：
Sandbox 112 is located at 130 top of water inlet, and sandbox 112 continues to leak sand into water inlet 130, when flow reaches sandbox
During 112 lower section, flow can take away the grains of sand leaked out in sandbox 112, and carry the grains of sand and enter bend 150 by water inlet 130 together
State interior, that more preferable simulation silt is flowed with flow
The opening and closing of water pump 116 are controlled by rotary switch, rotary switch open water pump 116 when, have first grade and
Two kinds of selections of second gear, first grade of pumping water is larger, can simulate the streamflow regime of wet season；Second gear pumping water is smaller,
The streamflow regime in dry season can be simulated.When rotary switch opens first grade, the water of about 60vol% and the grains of sand of 80vol%
It can flow into the first branch flow passage 152, the water of about 40vol% and the grains of sand of 20vol% can be flowed into the second branch flow passage 154.When
When rotary switch opens second gear, water stream will vary widely, and the water of about 60vol% will flow into the second branch flow passage
In 154, the water of about 40vol% will be flowed into the first branch flow passage 152.Water is bigger, and the grains of sand are got over into the second branch flow passage 154
Few, the shunting of the grains of sand has small scale variation, but changes less, it is considered that being basically unchanged in general teaching displaying.
It, can be by its side narrow second when the water in the second branch flow passage 154 flows to notch 160 with huge impact force
The entrance on turnout 168 is restricted, in addition the backwater effect of third separation levee 164, whirlpool, first segment are formed about in notch 160
The remaining grains of sand are largely got rid of to having on notch 160 or simultaneously the part grains of sand to enter in the first branch flow passage 152 in flow, are remained
Remaining most of grains of sand can be deposited in the sedimentation basin 174 on 160 opposite of notch.Generally, after excessively sand, the second turnout outlet 172
The water silt content of outflow is smaller compared with other outlets, in practical hydraulic engineering, can be made according to the setting of this kind of mode containing sand
Less water is measured for people’s lives water.
After flow is by each outlet outflow, water pump 116 send the water-circulating pump that water outlet flows out to water inlet 130.First
Collecting pit 182, the second collecting pit 184 set the first filtration members 188, the second filtration members 190, in third collecting pit 186 respectively
Three filtration members 192 make the grains of sand in flow be filtered out by each filtration members, have both achieved the purpose that collect the grains of sand, also avoid excessive
The grains of sand enter water pump 116 water pump 116 damaged.
Teaching aid 100 provided in this embodiment can not only vivo show bend secondary flow phenomenon, enhance teaching efficiency, make
The learning effect of member is more preferable, while also is able to that student is allowed how preferably to utilize bend ring in hydraulic engineering deeper into ground study
Stream principle makes point husky effect more preferable, reduces the subsequent purification pressure of people's domestic water.Certainly, in other embodiment, if only
It is to preferably show bend secondary flow phenomenon, in order to which student more fully understands, can also simply sets one without appointing
The bend in what tributary.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification for all within the spirits and principles of the present invention, being made,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of teaching aid, which is characterized in that including provisioning component and the water inlet being sequentially communicated, bend, water outlet, the confession
Component is answered for providing arsenicbearing gold ores to the water inlet.
2. teaching aid according to claim 1, which is characterized in that the provisioning component include sandbox, the sandbox be used for
The water inlet launches the grains of sand.
3. teaching aid according to claim 2, which is characterized in that the sandbox is equipped with through-hole and matched with the through-hole
Stopple, the stopple optionally open or close the through-hole.
4. teaching aid according to claim 1, which is characterized in that the bend includes the first branch flow passage and the second branch flow passage,
The first separation levee is provided between first branch flow passage and second branch flow passage, the horizontal plane of first branch flow passage is higher than
The horizontal plane of second branch flow passage, the water outlet include first outflux and second outflux, first tributary
Road is interconnected with first outflux, and second branch flow passage is interconnected with second outflux.
5. teaching aid according to claim 4, which is characterized in that second branch flow passage is equipped with sedimentation basin, the sedimentation basin
The both sides of second branch flow passage are relatively arranged on first separation levee.
6. teaching aid according to claim 4, which is characterized in that between first branch flow passage and second branch flow passage also
The second separation levee is provided with, first separation levee includes the first end and second end being oppositely arranged, and the second end is located at institute
Side of the first end far from the water inlet is stated, indwelling notch between the second end and second separation levee is so that described
One branch flow passage is interconnected with second branch flow passage, and the horizontal plane of the notch is higher than the horizontal plane of second branch flow passage.
7. teaching aid according to claim 6, which is characterized in that second branch flow passage includes first segment and second segment, institute
First segment is stated between second separation levee and the water inlet, the second segment be located at second separation levee with it is described
Between second outflux；Third separation levee is provided in the second segment, the third separation levee separates the second segment
For the first turnout and the second turnout, first turnout is limited with second separation levee by the third separation levee and is formed, institute
The horizontal plane for stating the first turnout is higher than the horizontal plane on second turnout；Second outflux include the first turnout outlet and
Second turnout exports, and first turnout outlet is interconnected with first turnout, the second turnout outlet and described the
Two turnouts are interconnected.
8. teaching aid according to claim 7, which is characterized in that the inlet calibre on first turnout is more than the described second trouble
The inlet calibre in road.
9. teaching aid according to claim 1, which is characterized in that the water outlet is connected with filtration members, and the filtration members are used
It is filtered out in by the grains of sand.
10. a kind of teaching aid, which is characterized in that described including provisioning component and the water inlet being sequentially communicated, bend, water outlet
Provisioning component includes water pump, and the water outlet is connect with the water pump by first pipe, and the water inlet leads to the water pump
Second pipe connection is crossed, the water pump is used to provide arsenicbearing gold ores to the water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188458.2A CN108198486A (en) | 2018-03-07 | 2018-03-07 | A kind of teaching aid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188458.2A CN108198486A (en) | 2018-03-07 | 2018-03-07 | A kind of teaching aid |
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| CN108198486A true CN108198486A (en) | 2018-06-22 |
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| CN201810188458.2A Pending CN108198486A (en) | 2018-03-07 | 2018-03-07 | A kind of teaching aid |
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Citations (5)
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|---|---|---|---|---|
| US5653592A (en) * | 1995-11-08 | 1997-08-05 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus for micro modeling the sediment transport characteristics of a river |
| FR2779001A1 (en) * | 1998-05-20 | 1999-11-26 | Jeulin Sa | Experimental teaching apparatus for simulating effects of flowing water |
| CN2582082Y (en) * | 2002-10-15 | 2003-10-22 | 苏强 | Fluid demonstration model |
| CN103290809A (en) * | 2013-06-24 | 2013-09-11 | 四川大学 | Desilting device of water channel bend |
| CN208834578U (en) * | 2018-03-07 | 2019-05-07 | 成都东软学院 | A kind of teaching aid |
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2018
- 2018-03-07 CN CN201810188458.2A patent/CN108198486A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5653592A (en) * | 1995-11-08 | 1997-08-05 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus for micro modeling the sediment transport characteristics of a river |
| FR2779001A1 (en) * | 1998-05-20 | 1999-11-26 | Jeulin Sa | Experimental teaching apparatus for simulating effects of flowing water |
| CN2582082Y (en) * | 2002-10-15 | 2003-10-22 | 苏强 | Fluid demonstration model |
| CN103290809A (en) * | 2013-06-24 | 2013-09-11 | 四川大学 | Desilting device of water channel bend |
| CN208834578U (en) * | 2018-03-07 | 2019-05-07 | 成都东软学院 | A kind of teaching aid |
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