CN-117198133-B - Experimental device for teaching and studying

CN117198133BCN 117198133 BCN117198133 BCN 117198133BCN-117198133-B

Abstract

The invention provides a teaching and research experiment device, which comprises a supporting plate, an aquarium, a gas collecting cover, a light source, a carbon dioxide generator and a gas collecting bottle, wherein the gas collecting bottle comprises a transparent bottle body, a bottle cover, a first hose, a second hose, a first on-off clamp and a second on-off clamp, the bottle cover is covered on the bottle mouth of the transparent bottle body to form a sealing cavity, the sealing cavity can be filled with water, a first port of the first hose and a first port of the second hose penetrate through the bottle cover and are communicated with the sealing cavity, a second port of the first hose can be sleeved and communicated with the gas collecting cover, a second port of the second hose can be used for sucking clarified lime water, the first on-off clamp is arranged on the first hose and is used for controlling the connection or disconnection of the first hose, and the second on-off clamp is arranged on the second hose and is used for controlling the connection or disconnection of the second hose. The teaching and research experimental device can quickly collect high-purity oxygen, intuitively and visually demonstrate the speed and volume change of oxygen generated by photosynthesis, has simple experimental operation and unlimited field, is suitable for various different research experiment demonstration, and has strong universality.

Inventors

LIN YAN
LI LINXUAN
HE MENGJUN
HE ZHONGLIANG
GAN ZHIWEN

Assignees

李林轩

Dates

Publication Date: 20260505
Application Date: 20230729

Claims (10)

1. The utility model provides a teaching and research experimental apparatus, includes backup pad, aquarium, gas collecting cap, light source, carbon dioxide generator and gas collecting bottle, the bottom of the case wall detachably of aquarium sets up in the backup pad, the transparent printing opacity perisporium of aquarium with enclose into between the bottom of the case wall and hold the chamber, hold the chamber and be used for holding water and algae plant, light source detachably sets up in the backup pad and can be directed to hold the chamber and shine, carbon dioxide generator detachably sets up in the backup pad, just carbon dioxide generator's the end of giving vent to anger can insert hold in the aquatic in chamber, its characterized in that: The gas collecting cover is arranged in a pyramid cover body, the large-diameter opening end of the pyramid cover body downwards detachably penetrates through the top end opening of the accommodating cavity and can be immersed and covered in water in the accommodating cavity, the small-diameter cone end of the pyramid cover body is penetrated and provided with a gas outlet, and the periphery of the gas outlet is convexly provided with a communicated gas exhaust channel; The gas collecting bottle comprises a transparent bottle body, a bottle cap, a first hose, a second hose, a first on-off clamp and a second on-off clamp, wherein the bottle cap is detachably covered on the bottle mouth of the transparent bottle body and forms a sealing cavity with the transparent bottle body, the sealing cavity can be filled with water, the outer peripheral wall of the transparent bottle body can be elastically deformed in an extrusion mode, a first port of the first hose and a first port of the second hose respectively penetrate through the bottle cap and can be communicated with the sealing cavity, a second port of the first hose is detachably sleeved and communicated on the exhaust channel, a second port of the second hose can absorb clarified lime water, the first on-off clamp is arranged on the first hose and controls the connection or disconnection of the two ports of the first hose, and the second clamp is arranged on the second hose and controls the connection or disconnection of the two ports of the second hose; The teaching and research experimental device further comprises a carbon dioxide monitor, the carbon dioxide monitor comprises a sucker and a transparent monitoring bottle, the inner cavity of the transparent monitoring bottle comprises a liquid inlet channel, a bending channel and a liquid storage cavity which are sequentially connected, one end of the liquid inlet channel, which is far away from the bending channel, is provided with a liquid inlet, the liquid storage cavity is used for containing carbon dioxide monitoring liquid, the outer peripheral surface of the transparent monitoring bottle, which corresponds to the liquid inlet channel, is convexly provided with a mounting column, the mounting column can be inserted into a mounting hole of the sucker, the sucker can be adsorbed on the inner peripheral surface of the transparent light-transmitting peripheral wall so that the transparent monitoring bottle is immersed in water in the containing cavity, the liquid inlet channel extends in a horn shape, the liquid inlet is at the position of the maximum horn mouth, and the liquid storage cavity is in a sphere shape.
2. The teaching and research experiment device according to claim 1, wherein: The teaching and research experiment device further comprises a transparent test tube, the transparent test tube is detachably arranged on the supporting plate, the lumen of the transparent test tube can be filled with water, the open end of the lumen can be reversely sleeved on the periphery of the exhaust channel and immersed in the water in the accommodating cavity, and the periphery of the transparent test tube is provided with scale marks; and/or the outer circumferential surface of the transparent bottle body is provided with scale marks.
3. The teaching and research experiment device according to claim 2, characterized in that: The teaching and research experimental device further comprises a clamping mechanism, the clamping mechanism comprises a supporting rod, a first clamping jaw, a second clamping jaw and an adjusting component, the supporting rod is detachably rotatably supported on the supporting plate in the vertical direction, the first clamping jaw and the second clamping jaw are arranged on the supporting rod, the adjusting component can control the first clamping jaw and the second clamping jaw to move towards or away from each other, and the transparent test tube at the exhaust passage passes through a clamping hole formed between the first clamping jaw and the second clamping jaw.
4. The teaching and research experiment device according to claim 2, characterized in that: Be provided with first storing groove, second storing groove and third storing groove in the backup pad, carbon dioxide generator can be placed in the first storing groove, gas collection bottle can be placed in the second storing groove, transparent test tube can be placed in the third storing groove.
5. The teaching and research experiment device according to claim 1, wherein: The carbon dioxide generator comprises a reaction bottle, a cover, a fine tuning valve, a third hose and a gas refiner, wherein the cover is detachably covered at the bottle mouth of the reaction bottle and forms a reaction cavity with the reaction bottle, and the reaction cavity is used for containing reactants for generating carbon dioxide; The air inlet of the fine tuning valve penetrates through the cover and can be communicated with the reaction cavity, the first port of the third hose is in butt joint communication with the air outlet of the fine tuning valve, and the air refiner is communicated with the second port of the third hose and can be inserted into water in the accommodating cavity.
6. The teaching and research experiment device according to claim 5, wherein: The carbon dioxide generator further comprises a check valve, the check valve comprises a valve sleeve and a valve core, the valve core is movably arranged in a sleeve of the valve sleeve, a first through hole communicated with the sleeve is formed in a penetrating manner on a first end face of the valve sleeve, a second through hole communicated with the sleeve is formed in a penetrating manner on a second end face of the valve sleeve, the third hose comprises a first pipe section and a second pipe section, two ends of the first pipe section are communicated between an air outlet of the fine adjustment valve and the first through hole, two ends of the second pipe section are communicated between the second through hole and the gas refiner, the first end face of the valve core can be abutted against the first end face of the valve sleeve to seal the first through hole, a notch is formed in the second end face of the valve core, and when the second end face of the valve core is abutted against the second end face of the valve sleeve, the notch is communicated with the second through hole; And/or, the carbon dioxide generator further comprises a pressure relief valve, and an air inlet of the pressure relief valve penetrates through the cover and can be communicated with the reaction cavity; And/or, the carbon dioxide generator further comprises a pressure gauge, and a detection port of the pressure gauge penetrates through the cover and can be communicated with the reaction cavity.
7. The teaching and research experiment device according to claim 1, wherein: The teaching and research experiment device further comprises a PH tester which is detachably arranged on the supporting plate and used for detecting the PH value of the water in the accommodating cavity; And/or, a first clamping plate of the first on-off clamp is provided with a first communication hole and a first pinch-off hole which are connected in a penetrating way, the maximum aperture of the first pinch-off hole is smaller than the minimum aperture of the first communication hole, the first hose is in a connection state when passing through the first communication hole, and the first hose is in a disconnection state when passing through the first pinch-off hole; and/or, the second clamping plate of the second on-off clamp is provided with a second communication hole and a second pinch-off hole in a penetrating way, the maximum aperture of the second pinch-off hole is smaller than the minimum aperture of the second communication hole, the second hose is in a connection state when passing through the second communication hole, and the second hose is in a disconnection state when passing through the second pinch-off hole.
8. The teaching and research experiment device according to claim 1, wherein: the light source is a lamp, the lamp is positioned above the aquarium in the vertical direction, the mounting rod of the lamp can be rotatably supported on the supporting plate around the vertical direction, and the illumination intensity of the lamp can be adjusted; or the light source is a flexible light strip, the flexible light strip is wound on the outer peripheral surface of the transparent light-transmitting peripheral wall, and the illumination intensity of the flexible light strip is adjustable.
9. The teaching and research experiment device according to claim 8, wherein: the light source is the lamps and lanterns, teaching and research experimental apparatus still includes the transparent light-transmitting plate of different colours, transparent light-transmitting plate detachably places hold the top opening part in chamber.
10. The teaching and research experiment device according to any one of claims 1-9, wherein: The teaching and research experiment device further comprises a lifting bag, wherein the lifting bag comprises a bearing bottom wall, a first side wall, a second side wall, a third side wall, a fourth side wall and two lifting handles, the supporting plate is fixedly arranged on the bearing bottom wall, the first side wall, the second side wall, the third side wall and the fourth side wall are made of flexible materials and are sequentially connected to the periphery of the bearing bottom wall, and the two lifting handles are respectively arranged on the first side wall and the third side wall in a protruding mode away from the bearing bottom wall; the first side wall is detachably connected between the second side wall and the fourth side wall through a magic tape, and the third side wall is detachably connected between the second side wall and the fourth side wall through a magic tape.

Description

Experimental device for teaching and studying Technical Field The invention relates to the technical field of scientific experiment teaching aids, in particular to a teaching and research experiment device. Background In the current experimental device for generating oxygen by the light effect in the textbook, algae are placed in a beaker filled with water, a test tube is buckled after a funnel is buckled reversely, gas is collected into the test tube by a drainage method, then the mouth of the test tube is plugged by a thumb in the water, the test tube is taken out and immediately inverted, and then a wooden strip with a Mars or a sanitary incense is stretched into the test tube to verify whether the test tube is oxygen or not. The experimental device is simple in material, but has the problems of slow oxygen generation, easy occurrence of oxygen impurity, experimental failure and the like, has higher experimental operation requirement, is generally used as a demonstration experiment of a teacher, has higher participation of students, is limited by various experimental environment conditions, and has high failure rate. In order to increase the oxygen production speed, the prior experimental device is provided with water and algae in an experimental bottle, extrudes a bottle body, extrudes part of water, reserves a space for generated oxygen, supplies carbon dioxide to the water in the experimental bottle by utilizing sodium bicarbonate, then places the experimental bottle under scattered light for irradiation, gas generated after photosynthesis of the algae is concentrated on the upper part of the experimental bottle, the experimental bottle body rebounds, then the wood strip or the incense with the spark obliquely stretches into the experimental bottle downwards through a verification hole of a gas collecting bottle, and whether the wood strip or incense with the spark can be reburned is observed, and if the reburning indicates that the algae is photosynthetic, the oxygen is generated. However, in the actual experimental operation process, the experimental device reduces the oxygen purity and influences the experimental effect due to the corrosiveness of sodium bicarbonate, too strong or weak illumination, insufficient oxygen generation, rebound oxygen overflow of the bottle body and the like. In addition, the experimental device can only demonstrate that photosynthesis produces oxygen, but cannot intuitively and visually demonstrate the speed and the volume change of oxygen production, so that the demonstration process is not vivid and concrete, and is not beneficial to students to understand. In addition, the oxygen collected by the experimental bottle of the experimental device cannot be used for other research experiments, such as chemical reaction experiments related to oxygen. Besides, the experimental device is not applicable to photosynthesis experiments, but cannot be used for performing other scientific research experiments, and has poor universality. Disclosure of Invention In order to achieve the main purpose of the invention, the invention provides the teaching and research experiment device which can quickly collect high-purity oxygen generated by photosynthesis so as to be suitable for chemical reaction experiments related to oxygen, can intuitively and visually demonstrate the speed and volume change of the oxygen generated by photosynthesis, is beneficial to students to understand, has simple experiment operation and unlimited experiment time and place, can independently complete experiments in different places such as families, classrooms and laboratories, can be suitable for various different research experiment demonstrations, and has strong universality. In order to achieve the main purpose of the invention, the invention provides a teaching and research experimental device, which comprises a supporting plate, an aquarium, a gas collecting cover, a light source, a carbon dioxide generator and a gas collecting bottle, wherein the bottom wall of the aquarium is detachably arranged on the supporting plate, a containing cavity is formed between the transparent light-transmitting peripheral wall of the aquarium and the bottom wall of the aquarium, the containing cavity is used for containing water and algae, the light source is detachably arranged on the supporting plate and can irradiate towards the containing cavity, the carbon dioxide generator is detachably arranged on the supporting plate, the gas outlet end of the carbon dioxide generator can be inserted into the water in the containing cavity, the gas collecting cover is in the shape of a pyramid cover body, the large-diameter end of the pyramid cover body downwards detachably penetrates through the top end opening of the containing cavity and can be immersed and covered in the water in the containing cavity, the small-diameter cone end of the pyramid cover body is provided with a gas outlet in a penetrating way, the periphery of th