CN110910741A

CN110910741A - Photosynthesis analogue means is used in biological assay teaching

Info

Publication number: CN110910741A
Application number: CN201911241340.2A
Authority: CN
Inventors: 张琬婧; 张宇涵; 张边江
Original assignee: Nanjing Xiaozhuang University
Current assignee: Nanjing Xiaozhuang University
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-03-24

Abstract

The invention discloses a photosynthesis simulation device for biological experiment teaching, which comprises a simulation device main body, a carbon dioxide generator, an oxygen sensor, a hose, a sealing cover, a buckle and a sealing ring, wherein a carbon dioxide air inlet is formed in the lower part of one side of the simulation device main body and is connected with a carbon dioxide air outlet at the carbon dioxide generator through the hose, the sealing cover is fixed at the top of the simulation device main body through the buckle, a lithium battery is fixed at the top of the sealing cover, a dispersing device is arranged below a planting device, the sealing ring is glued on the upper side and the lower side of a first light screen and a second light screen, and a light transmission area is arranged on the inner side of the sealing ring. This photosynthesis analogue means is used in middle school's biological assay teaching can make things convenient for the student to control illumination intensity, can observe under different illumination intensity, green speed of planting photosynthesis to make things convenient for the student to the change operation of different green plants, increase student's operability.

Description

Photosynthesis analogue means is used in biological assay teaching

Technical Field

The invention relates to the technical field of biological experiment teaching devices in middle schools, in particular to a photosynthesis simulation device for biological experiment teaching.

Background

A photosynthesis simulation device for biological experiment teaching in middle school is an experimental device for simulating photosynthesis of plants, and can simulate photosynthesis operation of the plants in a specific experimental device according to the characteristics of the photosynthesis of the plants, namely, the green plants (including algae) absorb light energy, hydrate carbon dioxide and water into energy-rich organic matters and release oxygen simultaneously, so that middle school students can visually observe the photosynthesis of the plants in the experimental device.

But photosynthesis analogue means is used in current middle school's biological assay teaching, at the in-process that uses, inconvenient student is to the control of illumination intensity, and inconvenient change to different green plant photosynthesis experiments is handled, and the operability is single.

Disclosure of Invention

The invention aims to provide a photosynthesis simulation device for biological experiment teaching, which is used for solving the problems that the conventional photosynthesis simulation device for middle school biological experiment teaching in the market in the background art is inconvenient for students to control the illumination intensity in the use process, is inconvenient for the replacement treatment of different green plant photosynthesis experiments and has single operability.

In order to achieve the purpose, the invention provides the following technical scheme: a photosynthesis simulator for biological experiment teaching comprises a simulator main body, a carbon dioxide generator, an oxygen sensor, a hose, a sealing cover, a buckle and a sealing ring, wherein a carbon dioxide air inlet is formed in the lower portion of one side of the simulator main body and is connected with a carbon dioxide air outlet of the carbon dioxide generator through the hose, an oxygen air outlet is formed in the upper portion of the other side of the simulator main body, the oxygen air outlet is connected with an oxygen air inlet of the oxygen sensor through the hose, the sealing cover is fixed to the top of the simulator main body through the buckle, a lithium battery is fixed to the top of the sealing cover, a light button is electrically connected to the sealing cover on one side of the lithium battery, a lamp tube is electrically connected to the inner side of the sealing cover, protective glass is arranged below the lamp tube, and a connecting groove is, and the connecting block at spread groove and analogue means main part edge top is connected to the inboard lower part welding of analogue means main part has the supporting shoe, and planting device has been placed to the top of supporting shoe simultaneously, 2 installing ports have been seted up to the front side of analogue means main part, and have inserted first light screen and second light screen in 2 installing ports respectively, and the both sides of first light screen and second light screen are connected with the spout of analogue means main part inner wall respectively, and the pull mouth has all been seted up at the front side middle part of first light screen and second light screen simultaneously, planting device's below is provided with dispersion devices, the equal glue in upper and lower both sides of first light screen and second light screen has the sealing washer, and the inboard of sealing washer is provided with the printing opacity district.

Preferably, the mounting opening penetrates through the front wall of the simulator main body, 2 mounting openings are arranged in parallel up and down, and the height and the length of the 2 mounting openings are the same.

Preferably, the first light shielding plate and the second light shielding plate are both sliding type drawing structures, and the light transmittance of the light transmission areas in the middle of the first light shielding plate and the second light shielding plate is 100% and 50% respectively.

Preferably, planting device includes the handle, green plants, opening, plants the frame and plants the mouth, and the handle is located both sides around the planting device, and the opening is located the planting device middle part, plants the frame and is located the opening inboard, plants the mouth and is located the up end of planting the frame, and green planting is planted in planting the mouth.

Preferably, the opening runs through planting device, and the inboard equidistance welding of open-ended has planted the frame to planting mouth has been seted up to the up end equidistance of planting the frame.

Preferably, the supporting blocks are welded on the inner wall of the simulator body at equal intervals, and the heights of the 8 supporting blocks are the same.

Preferably, the dispersing device comprises a dispersing pipe, a branch pipe and an exhaust port, the dispersing pipe is located at the bottom of the inner side of the simulation device main body, the branch pipe is located on one side, away from the carbon dioxide inlet, of the dispersing pipe, and the exhaust port is located on the upper end face of the branch pipe.

Preferably, the branch pipes are equidistantly welded on one side of the dispersion pipe, the interior of the dispersion pipe is communicated with the dispersion pipe, and the exhaust ports are equidistantly formed in the upper end face of the branch pipes.

Compared with the prior art, the invention has the beneficial effects that: the photosynthesis simulation device for the middle school biological experiment teaching can facilitate the control of the illumination intensity by students, can observe the photosynthesis speed of green plants under different illumination intensities, facilitates the replacement operation of the students on different green plants, and increases the operability of the students;

1. the front side of the simulator main body is provided with mounting openings which play a role of mounting the first light screen and the second light screen, and light transmission areas in the middle of the first light screen and the second light screen have different light transmission strengths, so that the control of the illumination strength of green plants can be realized, and the number of the mounting openings can be correspondingly increased as required;

2. be provided with the supporting shoe in the inside of analogue means main part, play and carry out the effect that supports to planting device, and then realize that planting device places in the analogue means main part is inside, the convenient change to green planting kind.

Drawings

FIG. 1 is a schematic view of a connection structure of a simulation apparatus main body, a carbon dioxide generator and an oxygen sensor of a photosynthesis simulation apparatus for biological experiment teaching according to the present invention;

FIG. 2 is a schematic top view of a simulation apparatus main body of the photosynthesis simulation apparatus for biological experiment teaching according to the present invention;

FIG. 3 is a schematic cross-sectional view of a simulation apparatus main body of the photosynthesis simulation apparatus for biological experiment teaching according to the present invention;

FIG. 4 is a schematic structural diagram of a dispersing device of the photosynthesis simulation apparatus for biological experiment teaching according to the present invention;

FIG. 5 is a schematic top view of a first light-shielding plate and a second light-shielding plate of a photosynthesis simulation apparatus for biological experiment teaching according to the present invention;

FIG. 6 is a schematic top view of a planting device of a photosynthesis simulation apparatus for biological experiment teaching according to the present invention;

fig. 7 is an enlarged schematic structural diagram of a point a in fig. 3 of the photosynthesis simulation apparatus for biological experiment teaching according to the present invention.

In the figure: 1. a simulation apparatus main body; 2. a carbon dioxide generator; 3. an oxygen sensor; 4. a carbon dioxide gas outlet; 5. a hose; 6. a carbon dioxide gas inlet; 7. an oxygen outlet; 8. an oxygen inlet; 9. a sealing cover; 10. buckling; 11. an installation port; 12. a first light shielding plate; 13. a second light shielding plate; 14. a lithium battery; 15. a light button; 16. pulling the opening; 17. a lamp tube; 18. protective glass; 19. a chute; 20. a planting device; 2001. a handle; 2002. planting green; 2003. an opening; 2004. planting frames; 2005. planting the opening; 21. a support block; 22. a dispersing device; 2201. a dispersion pipe; 2202. a branch pipe; 2203. an exhaust port; 23. a seal ring; 24. a light-transmitting region; 25. connecting grooves; 26. and (4) connecting the blocks.

Detailed Description

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a photosynthesis simulator for biological experiment teaching comprises a simulator main body 1, a carbon dioxide generator 2, an oxygen sensor 3, a carbon dioxide outlet 4, a hose 5, a carbon dioxide inlet 6, an oxygen outlet 7, an oxygen inlet 8, a sealing cover 9, a buckle 10, a mounting port 11, a first light shading plate 12, a second light shading plate 13, a lithium battery 14, a light button 15, a pulling port 16, a lamp tube 17, a protective glass 18, a sliding chute 19, a planting device 20, a handle 2001, a green plant 2002, an opening 2003, a planting frame 2004, a planting port 2005, a supporting block 21, a dispersing device 22, a dispersing pipe 2201, a branch pipe 2202, an exhaust port 2203, a sealing ring 23, a light-transmitting area 24, a connecting groove 25 and a connecting block 26, wherein the carbon dioxide inlet 6 is arranged at the lower part of one side of the simulator main body 1, and the carbon dioxide inlet 6 is connected with the carbon dioxide outlet 4, an oxygen outlet 7 is arranged at the upper part of the other side of the simulation device main body 1, the oxygen outlet 7 is connected with an oxygen inlet 8 at the oxygen sensor 3 through a hose 5, a sealing cover 9 is fixed at the top of the simulation device main body 1 through a buckle 10, a lithium battery 14 is fixed at the top of the sealing cover 9, a light button 15 is electrically connected on the sealing cover 9 at one side of the lithium battery 14, a lamp tube 17 is electrically connected at the inner side of the sealing cover 9, protective glass 18 is arranged below the lamp tube 17, a connecting groove 25 is arranged at the bottom of the edge of the sealing cover 9, the connecting groove 25 is connected with a connecting block 26 at the top of the edge of the simulation device main body 1, a supporting block 21 is welded at the lower part of the inner side of the simulation device main body 1, a planting device 20 is placed above the, and 2 have inserted first light screen 12 and second light screen 13 in the installing port 11 respectively, and the both sides of first light screen 12 and second light screen 13 are connected with the spout 19 of the 1 inner wall of analogue means main part respectively, the front side middle part of first light screen 12 and second light screen 13 has all been seted up simultaneously and has been pulled mouthful 16, planting device 20's below is provided with dispersion devices 22, the equal sticky sealing washer 23 that has in the upper and lower both sides of first light screen 12 and second light screen 13, and the inboard of sealing washer 23 is provided with printing opacity district 24.

The mounting port 11 runs through the antetheca of analogue means

main part

1, and 2 mounting ports 11 are upper and lower parallel arrangement to 2 mounting ports 11's height is the same with length, sets up the effect of playing first light screen 12 of installation and second light screen 13 like this, is favorable to first light screen 12 and second light screen 13 to the processing of sheltering from of fluorescent tube 17 light ray.

First light screen 12 and second light screen 13 are the slidingtype pull structure to, and the luminousness of first light screen 12 and second light screen 13 middle part printing opacity district 24 is 100% and 50% respectively, sets up like this and plays the effect that control fluorescent tube 17 sent light and shine on green planting 2002, is favorable to planting the control of 2002 illumination green.

The planting device 20 comprises a handle 2001, green plants 2002, an opening 2003, planting frames 2004 and planting holes 2005, the handle 2001 is located on the front side and the rear side of the planting device 20, the opening 2003 is located in the middle of the planting device 20, the planting frames 2004 are located on the inner side of the opening 2003, the planting holes 2005 are located on the upper end faces of the planting frames 2004, and the green plants 2002 are planted in the planting holes 2005.

The opening 2003 penetrates through the planting device 20, the planting frames 2004 are welded on the inner side of the opening 2003 at equal intervals, the planting holes 2005 are formed in the upper end face of each planting frame 2004 at equal intervals, the green plants 2002 are planted on the planting frames 2004 through the planting holes 2005, and carbon dioxide can enter the periphery of the green plants 2002 conveniently through the opening 2003.

Supporting shoe 21 equidistance welding is on the inner wall of analogue means

main part

1, and 8 highly the same between the supporting shoe 21, sets up like this and plays the effect of supporting planting device 20, is favorable to planting device 20's steady placing.

The dispersing device 22 comprises a dispersing pipe 2201, a branch pipe 2202 and an exhaust port 2203, the dispersing pipe 2201 is located at the bottom of the inner side of the simulation device main body 1, the branch pipe 2202 is located on one side, away from the carbon dioxide inlet 6, of the dispersing pipe 2201, and the exhaust port 2203 is located at the upper end face of the branch pipe 2202, so that the carbon dioxide enters the dispersing device 22 through the carbon dioxide inlet 6, and dispersing treatment of the carbon dioxide is facilitated.

Branch pipe 2202 equidistance welds in dispersion pipe 2201 one side, and dispersion pipe 2201's inside is linked together with dispersion pipe 2201 to the gas vent 2203 has been seted up to the up end equidistance of branch pipe 2202, sets up like this and plays the effect of dispersing the carbon dioxide that enters into the inside of analogue means main part 1, is favorable to the effect that carbon dioxide and analogue means main part 1 bottom moisture fully contacted, makes carbon dioxide bring moisture into around green planting 2002.

The working principle is as follows: when the photosynthesis simulator for the middle school biological experiment teaching is used, as shown in fig. 1-4 and 5, a user firstly plants green plants 2002 in a planting opening 2005 on a planting frame 2004, after the green plants 2002 are planted, lifts up the planting device 20 through a handle 2001 and puts the planting device 20 into the simulator main body 1, a supporting block 21 inside the simulator main body 1 supports the planting device 20, and adds a proper amount of water into the simulator main body 1, then, places a sealing cover 9 on the upper portion of the simulator main body 1, clamps a connecting groove 25 at the lower end of the sealing cover 9 on a connecting block 26 at the upper end of the simulator main body 1, fixes the sealing cover 9 on the top of the simulator main body 1 through a buckle 10, and then inserts a first shading plate 12 and a second shading plate 13 into a mounting opening 11 at the front side of the simulator main body 1 respectively according to the order of height, sealing rings 23 on the upper side and the lower side of the first light screen 12 and the second light screen 13 are in contact with a sliding groove 19, finally, a carbon dioxide gas outlet 4 at the position of the carbon dioxide generator 2 is connected with a carbon dioxide gas inlet 6 at the lower part of one side of the simulation device main body 1 through a hose 5, an oxygen gas outlet 7 at the upper part of the other side of the simulation device main body 1 is connected with an oxygen gas inlet 8 on the oxygen sensor 3 through the hose 5, and a power supply of the carbon dioxide generator 2 and the oxygen sensor 3 is connected, at the moment, the connection of the simulation device main body 1, the carbon dioxide generator 2 and the;

as shown in fig. 1-6, the carbon dioxide generator 2 is started, the carbon dioxide generator 2 enters the carbon dioxide gas into the dispersion device 22 inside the simulator main body 1 through the carbon dioxide gas outlet 4, the hose 5 and the carbon dioxide gas inlet 6, the carbon dioxide gas enters the branch pipe 2202 through the dispersion pipe 2201 and is discharged from the gas outlet 2203 on the branch pipe 2202, the carbon dioxide gas contacts with the water at the bottom of the simulator main body 1, rises to the planting device 20 and enters the green plants 2002 on the planting racks 2004 through the opening 2003 inside the planting device 20, and then enters the oxygen sensor 3 through the oxygen gas outlet 7, the hose 5 and the oxygen gas inlet 8, and the carbon dioxide gas can firstly pass through the oxygen gas outlet 7, the air inside the simulator main body 1 and then enter the oxygen sensor 3 through the carbon dioxide gas outlet 7 and the carbon dioxide gas inlet 8, because the relative molecular mass of the carbon dioxide gas is, The hose 5 and the oxygen inlet 8 enter the oxygen sensor 3, after the air in the simulator main body 1 is completely exhausted, that is, no oxygen exists in the simulator main body 1, when the oxygen sensor 3 cannot detect the oxygen, the light button 15 on the top of the sealing cover 9 is opened, the lamp tube 17 inside the sealing cover 9 is electrified to emit light, the light irradiates the green plants 2002 on the planting frame 2004 through the light transmission area 24 in the middle of the first light shielding plate 12 and the second light shielding plate 13, the green plants 2002 perform photosynthesis, the generated oxygen is pushed by the carbon dioxide gas continuously introduced into the carbon dioxide gas inlet 6, the oxygen enters the oxygen sensor 3 through the oxygen outlet 7, the hose 5 and the oxygen inlet 8, the oxygen sensor 3 can detect the oxygen, the student can pull out the second light shielding plate 13 through the pulling port 16, at this time, more light irradiates the green plants 2002 on the planting frame 2004, the photosynthesis of the green plants 2002 is accelerated, the amount of oxygen generated by the oxygen sensor 3 is increased, and the user can change the planting device 20 to detect the photosynthesis of different green plants 2002.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents, and improvements may be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a photosynthesis analogue means is used in biological assay teaching, includes analogue means main part (1), carbon dioxide generator (2), oxygen sensor (3), hose (5), sealed lid (9), buckle (10) and sealing washer (23), its characterized in that: the simulation device is characterized in that a carbon dioxide air inlet (6) is formed in the lower portion of one side of the simulation device main body (1), the carbon dioxide air inlet (6) is connected with a carbon dioxide air outlet (4) at the position of the carbon dioxide generator (2) through a hose (5), an oxygen air outlet (7) is formed in the upper portion of the other side of the simulation device main body (1), the oxygen air outlet (7) is connected with an oxygen air inlet (8) at the position of the oxygen sensor (3) through the hose (5), a sealing cover (9) is fixed to the top of the simulation device main body (1) through a buckle (10), a lithium battery (14) is fixed to the top of the sealing cover (9), a light button (15) is electrically connected to the sealing cover (9) on one side of the lithium battery (14), a lamp tube (17) is electrically connected to the inner side of the sealing cover, the bottom of the edge of the sealing cover (9) is provided with a connecting groove (25), the connecting groove (25) is connected with a connecting block (26) at the top of the edge of the simulation device main body (1), a supporting block (21) is welded at the lower part of the inner side of the simulation device main body (1), a planting device (20) is placed above the supporting block (21), the front side of the simulation device main body (1) is provided with 2 mounting openings (11), a first light screen (12) and a second light screen (13) are respectively inserted into the 2 mounting openings (11), the two sides of the first light screen (12) and the second light screen (13) are respectively connected with a sliding groove (19) of the inner wall of the simulation device main body (1), meanwhile, the middle parts of the front sides of the first light screen (12) and the second light screen (13) are respectively provided with a pulling opening (16), and a dispersing device (22) is arranged below the planting device (20), sealing rings (23) are glued to the upper side and the lower side of the first shading plate (12) and the second shading plate (13), and a light-transmitting area (24) is arranged on the inner side of each sealing ring (23).

2. The photosynthesis simulation apparatus for biological experiment teaching according to claim 1, wherein: the mounting port (11) penetrates through the front wall of the simulation device main body (1), the 2 mounting ports (11) are arranged in parallel from top to bottom, and the height and the length of the 2 mounting ports (11) are the same.

3. The photosynthesis simulation apparatus for biological experiment teaching according to claim 1, wherein: the first shading plate (12) and the second shading plate (13) are both of sliding type drawing structures, and the light transmittance of the middle light transmission area (24) of the first shading plate (12) and the second shading plate (13) is 100% and 50% respectively.

4. The photosynthesis simulation apparatus for biological experiment teaching according to claim 1, wherein: the planting device (20) comprises a handle (2001), green plants (2002), an opening (2003), planting frames (2004) and planting openings (2005), the handle (2001) is located on the front side and the rear side of the planting device (20), the opening (2003) is located in the middle of the planting device (20), the planting frames (2004) are located on the inner side of the opening (2003), the planting openings (2005) are located on the upper end face of the planting frames (2004), and the green plants (2002) are planted in the planting openings (2005).

5. The photosynthesis simulation apparatus for biological experiment teaching according to claim 4, wherein: the opening (2003) penetrates through the planting device (20), planting frames (2004) are welded on the inner side of the opening (2003) at equal intervals, and planting holes (2005) are formed in the upper end face of each planting frame (2004) at equal intervals.

6. The photosynthesis simulation apparatus for biological experiment teaching according to claim 1, wherein: the supporting blocks (21) are welded on the inner wall of the simulator main body (1) at equal intervals, and the heights of the 8 supporting blocks (21) are the same.

7. The photosynthesis simulation apparatus for biological experiment teaching according to claim 1, wherein: the dispersing device (22) comprises a dispersing pipe (2201), a branch pipe (2202) and an exhaust port (2203), the dispersing pipe (2201) is located at the bottom of the inner side of the simulating device main body (1), the branch pipe (2202) is located on one side, away from the carbon dioxide inlet (6), of the dispersing pipe (2201), and the exhaust port (2203) is located on the upper end face of the branch pipe (2202).

8. The photosynthesis simulation apparatus for biological experiment teaching according to claim 7, wherein: the branch pipes (2202) are welded on one side of the dispersion pipe (2201) at equal intervals, the interior of the dispersion pipe (2201) is communicated with the dispersion pipe (2201), and the exhaust ports (2203) are formed in the upper end face of the branch pipes (2202) at equal intervals.