CN206541510U - A kind of flow velocity and the teaching aid of pressure relation - Google Patents
A kind of flow velocity and the teaching aid of pressure relation Download PDFInfo
- Publication number
- CN206541510U CN206541510U CN201720071255.6U CN201720071255U CN206541510U CN 206541510 U CN206541510 U CN 206541510U CN 201720071255 U CN201720071255 U CN 201720071255U CN 206541510 U CN206541510 U CN 206541510U
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- tracheae
- support
- flow velocity
- hand member
- scraps
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Abstract
The utility model discloses a kind of flow velocity and the teaching aid of pressure relation, including base, support, tracheae, tubaeform valve, the infundibulate scraps of paper and electric blower, support vertical be arranged on the base on, the upper surface of base is located at the left side of support provided with scale and scale, the other end side of support is provided with through hole, the bearing of trend of through hole is parallel with the direction of the scale on scale, so as to realize the connection of tracheae and support in tracheae insertion through hole, the infundibulate scraps of paper are formed by cone bucket body and interconnection of leting slip a remark, activity of leting slip a remark being set on the tracheae and lets slip a remark positioned at the left end of the tracheae, the right-hand member of tracheae is fixedly connected with one end of tubaeform valve, the gas outlet of electric blower is located at the other end of tubaeform valve, the top of support is provided with boss, one end of soft frenulum is connected with boss, the other end of soft frenulum is pasted onto on the infundibulate scraps of paper；The utility model is easy to operate, and effect significantly, can clearly show that the smaller phenomenon of the more fast lateral pressure of flow velocity.
Description
Technical field
The utility model is related to physical teaching aid, and in particular to a kind of flow velocity and the teaching aid of pressure relation.
Background technology
Gas pressure intensity and flow velocity relation are one of emphasis of Junior physics teaching, are also one of teaching difficulty.Therefore,
The experiment for carrying out gas pressure intensity and flow velocity relation and its feature just seems particularly significant；Existing learning gas pressure and flow velocity relation
Experiment, there is operation inconvenience in many experiments, experimental phenomena not enough obvious intuitively shortcoming.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of flow velocity and pressure for above-mentioned the deficiencies in the prior art
The teaching aid of strong relation, this flow velocity and the teaching aid of pressure relation are easy to operate, and effect significantly, can clearly show that the faster pressure of flow velocity
Smaller phenomenon.
To realize above-mentioned technical purpose, the technical scheme that the utility model is taken is：
A kind of teaching aid of flow velocity and pressure relation, including base, support, tracheae, tubaeform valve, the infundibulate scraps of paper and blow
Induced-draught fan, one end of the support being arranged on the base vertically, the upper surface of the base is provided with scale and scale position
In the left side of support, the side of the other end of the support is provided with through hole, the bearing of trend of the through hole and the scale
The direction of scale is parallel, and the tracheae inserts in the through hole to realize the connection of tracheae and support, the infundibulate scraps of paper
Formed by cone bucket body and interconnection of leting slip a remark, the activity of leting slip a remark being set on the tracheae and leting slip a remark positioned at the gas
The left end of pipe, the right-hand member of the tracheae is fixedly connected with one end of tubaeform valve, and the gas outlet of the electric blower is located at loudspeaker
The other end of shape valve, the top of the support is provided with one end that soft frenulum is connected with boss, the boss, described soft
The other end of matter frenulum is pasted onto on the infundibulate scraps of paper.
As the further improved technical scheme of the utility model, the inner surface of the through hole of the support passes through glue and gas
The outer surface of pipe is fixedly connected.
As the further improved technical scheme of the utility model, the right-hand member of the tubaeform valve is thicker than left end, described
The oral area of the right-hand member of tubaeform valve is expanded to surrounding, and the inner surface of the left end of the tubaeform valve is provided with internal thread, described
The outer surface of the right-hand member of tracheae is provided with the external screw thread being engaged with internal thread, and the internal thread rotation goes on external screw thread to realize
Connection between the left end of tubaeform valve and the right-hand member of tracheae.
As the further improved technical scheme of the utility model, the gas outlet of the electric blower is located at tubaeform valve
Right-hand member oral area.
As the further improved technical scheme of the utility model, the left end of the tubaeform valve and the right-hand member of tracheae it
Between the outer surface of link position be arranged with sealing rubber ring.
The beneficial effects of the utility model are the demonstrations of pressure flow velocity relation, and electric blower is blown or air-breathing makes infundibulate paper
The gas flow rate of the inner side of piece is big, and infundibulate scraps of paper left direction flies out, and the lateral pressure for understanding the infundibulate scraps of paper from phenomenon becomes
It is small, when electric blower increase switch gear make electric blower blow or air-breathing wind-force become it is strong when, the infundibulate scraps of paper it is interior
The gas flow rate of side becomes big, and the distance that infundibulate scraps of paper left direction flies out is more remote, therefore the utility model can be clearly showed that
The smaller phenomenon of the more fast lateral pressure of flow velocity, easy to operate, effect significantly, closes the flow velocity of student's pressure easier to understand
System.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment of the present utility model is further illustrated below according to Fig. 1：
Referring to Fig. 1, a kind of flow velocity and the teaching aid of pressure relation, including base 1, support 3, tracheae 4, tubaeform valve 8, leakage
The bucket shape scraps of paper 5 and electric blower 9, one end of the support 3 being arranged on the base 1 vertically, the upper surface of the base 1
It is located at the left side of support 3 provided with scale 2 and scale 2, the side of the other end of the support 3 is provided with through hole, the through hole prolongs
Stretch direction parallel with the direction of the scale on the scale 2, the tracheae 4 inserts in the through hole to realize tracheae 4 and branch
The connection of frame 3, tracheae 4 is parallel with the direction of the scale on scale 2, and the infundibulate scraps of paper 5 are by cone bucket body 10 and let slip a remark
11 be connected with each other form, it is described let slip a remark 11 activity be set on the tracheae 4 and let slip a remark 11 be located at the tracheae 4 left end,
The right-hand member of the tracheae 4 is fixedly connected with one end of tubaeform valve 8, and the gas outlet 12 of the electric blower 9 is positioned at tubaeform
The other end of valve 8, the top of the support 3 is provided with one end that soft frenulum 7 is connected with boss 6, the boss 6, described
The other end of soft frenulum 7 is pasted onto on the infundibulate scraps of paper 5.
In the present embodiment, the inner surface of the through hole of the support 3 is fixedly connected by glue with the outer surface of tracheae 4.
In the present embodiment, the right-hand member of the tubaeform valve 8 is thicker than left end, the oral area of the right-hand member of the tubaeform valve 8
Expanded to surrounding, the inner surface of the left end of the tubaeform valve 8 is provided with internal thread, and the outer surface of the right-hand member of the tracheae 4 is set
Have an external screw thread being engaged with internal thread, the internal thread rotation go on external screw thread so as to realize the left end of tubaeform valve 8 with
Connection between the right-hand member of tracheae 4.
In the present embodiment, the gas outlet 12 of the electric blower 9 is located at the oral area of the right-hand member of tubaeform valve 8.
In the present embodiment, the appearance surface cover of the link position between the left end of the tubaeform valve 8 and the right-hand member of tracheae 4
Provided with sealing rubber ring 13.Effectively prevent the link position between the left end of tubaeform valve 8 and the right-hand member of tracheae 4 from leaking
The phenomenon of gas, makes the more accurate and notable of phenomenon displaying.
The utility model when in use, the gas outlet 12 of electric blower 9 is directed at the oral area of the right-hand member of tubaeform valve 8,
Make electric blower 9 gas outlet 12 be located at tubaeform valve 8 right-hand member oral area inner side, it is ensured that electric blower 9 blow or
During person's air-breathing, gas can only quickly be flowed by the inside of tracheae 4, and the outer surface of tracheae 4 does not have gas quickly to flow, it is ensured that this reality
With the accuracy of novel operating, the infundibulate scraps of paper 5 are movable to be enclosed on the tracheae 4, and the enough length of soft frenulum 7 makes funnel
The shape scraps of paper 5 can fly out distant location, and scale 2 is used to measure the distance that the infundibulate scraps of paper 5 fly out, first, opens air sucking/blowing
One gear switch of machine 9, electric blower 9 carries out air-breathing or air blowing, no matter the air-breathing of electric blower 9 or blows, gas can quickly exist
The inside of tracheae 4, the inner side 14 of let slip a remark 11 inside and the cone bucket body 10 of the infundibulate scraps of paper 5 are flowed, now infundibulate paper
Piece 5 can be flown out from tracheae 4, close electric blower 9, and the distance that the infundibulate scraps of paper 5 fly out is recorded from scale 2；Again by soft
Matter frenulum 7 picks up the infundibulate scraps of paper 5, and the infundibulate scraps of paper 5 are enclosed on to the left end of tracheae 4 again, and open electric blower 9 two grades are opened
Close, electric blower 9 carries out air-breathing or the speed of air blowing accelerates, and gas flow rate accelerates, the cone bucket body 10 of the infundibulate scraps of paper 5
The gas flow rate of inner side 14 become big, now the infundibulate scraps of paper 5 can fly out from tracheae 4, electric blower 9 be closed, from scale 2
The distance that the record infundibulate scraps of paper 5 fly out, the distance versus flown out from the infundibulate scraps of paper 5 recorded twice is obtained, second of leakage
Distance that the bucket shape scraps of paper 5 fly out is big, therefore obtains the gas flow rate of the inner side 14 of the cone bucket body 10 of the infundibulate scraps of paper 5 and get over
Greatly, lateral pressure is smaller.The utility model between the outside and inner side of the cone bucket body 10 of the infundibulate scraps of paper 5 due to generating
Pressure difference, result in the infundibulate scraps of paper 5 and flies out.Soft frenulum 7 prevents that the infundibulate scraps of paper 5 from flying out very remote place, causes to look for
Less than the infundibulate scraps of paper 5.The utility model can clearly show that the smaller phenomenon of the faster pressure of flow velocity, easy to operate, and effect shows
Write, make the flow velocity relation of student's pressure easier to understand.
Protection domain of the present utility model includes but is not limited to embodiment of above, and protection domain of the present utility model is to weigh
Sharp claim is defined, and any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement are each fallen within
Protection domain of the present utility model.
Claims (5)
1. a kind of flow velocity and the teaching aid of pressure relation, it is characterised in that：Including base, support, tracheae, tubaeform valve, funnel
The shape scraps of paper and electric blower, one end of the support being arranged on the base vertically, the upper surface of the base is provided with mark
Chi and scale are located at the left side of support, and the side of the other end of the support is provided with through hole, the bearing of trend of the through hole and institute
The direction for stating scale on scale is parallel, and the tracheae is inserted so as to realize the connection of tracheae and support in the through hole, described
The infundibulate scraps of paper form by cone bucket body and interconnection of leting slip a remark, and the activity of leting slip a remark is set on the tracheae and let slip a remark
Positioned at the left end of the tracheae, the right-hand member of the tracheae is fixedly connected with one end of tubaeform valve, and the electric blower goes out
Gas port is located at the other end of tubaeform valve, and the top of the support, which is provided with boss, the boss, is connected with soft frenulum
One end, the other end of the soft frenulum is pasted onto on the infundibulate scraps of paper.
2. flow velocity according to claim 1 and the teaching aid of pressure relation, it is characterised in that：The interior table of the through hole of the support
Face is fixedly connected by glue with the outer surface of tracheae.
3. flow velocity according to claim 1 and the teaching aid of pressure relation, it is characterised in that：The right-hand member of the tubaeform valve
Thicker than left end, the oral area of the right-hand member of the tubaeform valve is expanded to surrounding, and the inner surface of the left end of the tubaeform valve is set
There is internal thread, the outer surface of the right-hand member of the tracheae is provided with the external screw thread being engaged with internal thread, and the internal thread rotation goes to outer
So as to realize the connection between the left end of tubaeform valve and the right-hand member of tracheae on screw thread.
4. flow velocity according to claim 3 and the teaching aid of pressure relation, it is characterised in that：The gas outlet of the electric blower
Positioned at the oral area of the right-hand member of tubaeform valve.
5. flow velocity according to claim 4 and the teaching aid of pressure relation, it is characterised in that：The left end of the tubaeform valve
The outer surface of link position between the right-hand member of tracheae is arranged with sealing rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720071255.6U CN206541510U (en) | 2017-01-20 | 2017-01-20 | A kind of flow velocity and the teaching aid of pressure relation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720071255.6U CN206541510U (en) | 2017-01-20 | 2017-01-20 | A kind of flow velocity and the teaching aid of pressure relation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206541510U true CN206541510U (en) | 2017-10-03 |
Family
ID=59940145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720071255.6U Expired - Fee Related CN206541510U (en) | 2017-01-20 | 2017-01-20 | A kind of flow velocity and the teaching aid of pressure relation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206541510U (en) |
-
2017
- 2017-01-20 CN CN201720071255.6U patent/CN206541510U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 Termination date: 20180120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |