CN213337204U

CN213337204U - Experimental device for measuring oxygen content in air

Info

Publication number: CN213337204U
Application number: CN202022365049.0U
Authority: CN
Inventors: 郑子辂
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-06-01
Anticipated expiration: 2030-10-21

Abstract

An experimental device for measuring oxygen content in air is provided, wherein a zero scale mark and an equal volume scale mark are arranged on an experimental bottle, the zero scale mark is arranged at a position close to a second end of the experimental bottle, each equal volume scale mark equally divides the volume of the experimental bottle from the zero scale mark to a bottle plug, the zero scale mark is arranged, the volume below the zero scale mark in the experimental bottle is used for containing water for experiment, and the volume above the zero scale mark in the experimental bottle is equally divided by the equal volume scale mark, so that red phosphorus is ignited in the experimental bottle and rapidly stretches into the experimental bottle and tightly plugs the bottle plug, when the temperature of the experimental bottle is reduced to room temperature, one end of a guide pipe is inserted into a water tank, a control switch is opened, water in the water tank enters the experimental bottle through the guide pipe and coincides with the equal volume scale mark, and the experimental device for measuring oxygen content in air can visually observe the experimental phenomenon of the proportion of the oxygen content in air, the experimental effect is obvious and is the same as the theoretical value.

Description

Experimental device for measuring oxygen content in air

Technical Field

The utility model relates to a laboratory apparatus technical field, in particular to oxygen assay tester in air.

Background

In the chemical experiment teaching of middle school, in the demonstration experiment of oxygen content survey in the air, often through the oxygen in red phosphorus burning consumption container, then observe the volume that gets into water in the container and measure, because the volume of air in the container and the water injection volume after burning are for the visual estimation, can not demonstrate the experimental phenomenon directly perceivedly, can not reach the experimental requirement of oxygen content survey in the air, influence teaching demonstration effect.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a tester for measuring the oxygen content in air.

The utility model provides an above-mentioned technical problem's technical scheme as follows: an air oxygen content determination tester, comprising: the device comprises an experimental bottle, a base, a bottle stopper and a conduit;

the first end of the experiment bottle is provided with a liquid guide port, the second end of the experiment bottle is fixed on the base, the experiment bottle is provided with a zero scale mark and a plurality of equally-divided volume scale marks, the zero scale mark is arranged at a position close to the second end of the experiment bottle, the zero scale mark and the second end of the experiment bottle are arranged at intervals, and the volume of the experiment bottle from the zero scale mark to the bottle stopper is equally divided by the equally-divided volume scale marks;

the bottle plug is inserted and located in the drain port, the bottle plug with the lateral wall butt of drain port, first connecting hole has been seted up on the bottle plug, the inside of pipe has the drain chamber, the first end of pipe is fixed in the first connecting hole, just the drain chamber with the inside intercommunication of experiment bottle, be provided with control switch on the pipe.

In one embodiment, further comprising: and the bottle plug is provided with a second connecting hole, and one end of the burning spoon is arranged in the experiment bottle through the second connecting hole.

In one embodiment, the width of the test bottle gradually increases from the first end of the test bottle to the middle of the test bottle, and the width of the second end of the test bottle to the middle of the test bottle is equal.

In one embodiment, a plug position indicating line is arranged on the first end of the experiment bottle.

In one embodiment, the aliquot volume scale mark comprises: first scale mark, second scale mark, third scale mark and fourth scale mark, first scale mark the second scale mark the third scale mark with the fourth scale mark along the second end of experiment bottle arrives the direction of the first end of experiment bottle is equidistance interval setting in proper order.

In one embodiment, an equal division indication mark is arranged on one end of the first scale mark, one end of the second scale mark, one end of the third scale mark and one end of the fourth scale mark.

In one embodiment, volume indicating marks are disposed on the other end of the first graduation mark, the other end of the second graduation mark, the other end of the third graduation mark and the other end of the fourth graduation mark.

In one embodiment, the base is integrally provided with the laboratory bottle.

In one embodiment, the base has a width greater than a width of the vial.

In one embodiment, the stopper is any one of a rubber stopper, a silicone stopper and a glass cap.

The utility model has the advantages that: the utility model provides an oxygen assay tester in air for during oxygen assay's in air demonstration experiment, be provided with zero scale mark and partition volume scale mark on the experiment bottle, zero scale mark sets up in the position that is close to the second end of experiment bottle, each partition volume scale mark will zero scale mark extremely the bottle plug department the volume of experiment bottle is equallyd divide, owing to be provided with zero scale mark, the volume under the zero scale mark in the experiment bottle is used for holding the water for the experiment, is used for absorbing the white smoke that red phosphorus burning produced, and the volume on the zero scale mark in the experiment bottle is by partition volume scale mark equallyd divide for oxygen assay in the air, like this, through in the experiment bottle annotate water to the position of zero scale mark, treat that red phosphorus is lighted the back, stretch into rapidly in the experiment bottle, and jam the bottle plug tightly, when the temperature of the experiment bottle is reduced to the room temperature, one end of the guide pipe is inserted into the water tank, the control switch is turned on, water in the water tank enters the experiment bottle through the guide pipe and coincides with the position of the volume dividing scale mark, the experiment device for measuring the oxygen content in the air can visually observe the experiment phenomenon of the proportion of the oxygen content in the air, the experiment effect is obvious, and the experiment effect is the same as the theoretical value.

Drawings

Fig. 1 is a schematic structural diagram of an experimental apparatus for measuring oxygen content in air according to an embodiment.

In the attached drawings, 10, an oxygen content measuring tester in air; 100. a base; 200. an experimental bottle; 210. a liquid guide port; 220. a laboratory cavity; 221. a volume chamber; 222. a measurement chamber; 300. a bottle stopper; 310. a rubber plug position indicating line; 400. a conduit; 410. a control switch; 500. dividing volume scale lines into equal parts; 510. a first scale mark; 520. a second scale mark; 530. a third scale line; 540. a fourth tick mark; 600. zero scale line; 610. the index is divided equally.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The following will combine the drawings of the embodiments of the present invention to further describe the technical solution of the present invention, and the present invention is not limited to the following specific embodiments.

It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar parts. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the description is merely for convenience of description and simplicity of description, but does not indicate or imply that the equipment or components referred to must have specific orientations, be constructed in specific orientations, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art will understand the specific meanings of the terms according to specific situations.

As shown in FIG. 1, in one embodiment, an airborne oxygen determination tester 10 includes: the experimental bottle 200, the base 100, the bottle stopper 300 and the conduit 400; a liquid guide port 210 is formed at a first end of the experiment bottle 200, a second end of the experiment bottle 200 is fixed on the base 100, a zero scale mark 600 and a plurality of equally-divided volume scale marks 500 are arranged on the experiment bottle 200, the zero scale mark 600 is arranged at a position close to the second end of the experiment bottle 200, the zero scale mark 600 and the second end of the experiment bottle 200 are arranged at intervals, and each equally-divided volume scale mark 500 equally divides the volume of the experiment bottle 200 from the zero scale mark 600 to a part of the bottle stopper 300; the bottle stopper 300 is inserted into the liquid guide port 210, the bottle stopper 300 abuts against the side wall of the liquid guide port 210, a first connecting hole is formed in the bottle stopper 300, a liquid guide cavity is formed in the guide tube 400, the first end of the guide tube 400 is fixed in the first connecting hole, the liquid guide cavity is communicated with the inside of the experiment bottle 200, and the guide tube 400 is provided with a control switch 410.

In this embodiment, the first end of the experiment bottle 200 is a bottle mouth end, and the second end of the experiment bottle 200 is a bottle bottom. The experiment bottle 200 is internally provided with an experiment cavity 220, the zero graduation line 600 divides the experiment cavity 220 into a volume cavity 221 close to the second end of the experiment bottle 200 and a measurement cavity 222 close to the first end of the experiment bottle 200, the volume cavity 221 is used for containing water for experiments, so that white smoke generated by combustion of red phosphorus can be absorbed timely, pollution caused by the fact that the white smoke overflows into the air is avoided, the white smoke is phosphorus pentoxide solid particles, each equant volume graduation line 500 is arranged on the side wall of the measurement cavity 222, the volume of the measurement cavity 222 is equally divided into a plurality of equal parts by the zero graduation line 600 and each equant volume graduation line 500, therefore, the bottle plug 300 is inserted into the liquid guide port 210, the control switch 410 on the guide pipe 400 is closed, the experiment bottle 200 forms a closed space, and the air in the experiment bottle 200 is isolated from the outside air, the oxygen in the measuring cavity 222 is exhausted by burning red phosphorus, so that negative pressure is generated in the experiment bottle 200, the control switch 410 is turned on, water outside the experiment bottle 200 can enter the experiment bottle 200 through the liquid guide cavity, so that the water level in the experiment bottle 200 rises, the volume of the measuring cavity 222 is equally divided into a plurality of equal parts by the zero scale mark 600 and the equal volume scale marks 500, and the rising height of the water level can be intuitively displayed through the volume scale marks on the side wall of the measuring cavity 222, so that the number of parts of the oxygen in the air can be more intuitively measured.

Compared with the traditional experimental bottle, the scale is calculated from the bottle bottom, and the water at the bottle bottom occupies the space in the bottle, so that the scale measurement is inaccurate. In this embodiment, the zero graduation mark 600 and the second end of the experimental bottle 200 are arranged at an interval, so that the volume cavity 221 capable of containing water exists between the zero graduation mark 600 and the bottle bottom, and the measurement cavity 222 takes the zero graduation mark 600 as a starting point of graduation, so that each of the equally-divided volume graduation marks 500 on the side wall of the measurement cavity 222 can accurately detect the rising height of the water level.

To better burn red phosphorus and deplete the oxygen in the test bottle 200, in one embodiment, the air oxygen content determination tester 10 further comprises: the bottle stopper 300 is provided with a second connecting hole, and one end of the burning spoon is arranged in the experiment bottle 200 through the second connecting hole. Specifically, the combustion spoon includes: handheld portion and ladle portion, the handheld portion of burning spoon passes through the second connecting hole is fixed on the bottle plug 300, the ladle portion orientation of burning spoon experiment bottle 200 works as bottle plug 300 is inserted and is located when leading in the liquid mouth 210, the ladle portion setting of burning spoon is in the experiment bottle 200 to place red phosphorus light back is lighted in the ladle portion of burning spoon, will bottle plug 300 is inserted and is located in leading in the liquid mouth 210, makes form airtight space in the experiment bottle 200, and red phosphorus can be in the inside burning of experiment bottle 200 consumes oxygen in the experiment bottle 200.

Illustratively, the utility model provides an oxygen assay tester 10 in air for when the demonstration experiment of oxygen assay in air, be provided with zero scale mark 600 and partition volume scale mark 500 on the experiment bottle 200, zero scale mark 600 sets up in the position that is close to the second end of experiment bottle 200, each partition volume scale mark 500 with the volume of zero scale mark 600 to experiment bottle 200 of bottle plug 300 department is equallyd divide, owing to be provided with zero scale mark 600, the volume under zero scale mark 600 in the experiment bottle 200 is used for holding experimental water, is used for absorbing the white smoke that red phosphorus burning produced, and the volume on zero scale mark 600 in the experiment bottle 200 is equallyd divide by partition volume scale mark 500 for the oxygen assay in the air, like this, through annotating water in experiment bottle 200 to the position of zero scale mark 600, after the red phosphorus is ignited, the red phosphorus rapidly extends into the experiment bottle 200, the bottle stopper 300 is tightly plugged, when the temperature of the experiment bottle 200 is reduced to the room temperature, one end of the guide pipe 400 is inserted into the water tank, the control switch 410 is turned on, water in the water tank enters the experiment bottle 200 through the guide pipe 400 and coincides with the position of one of the equal volume scale marks 500, the experiment device 10 for measuring the oxygen content in the air can visually observe the experiment phenomenon of the proportion of the oxygen content in the air, the experiment effect is obvious, and the experiment effect is the same as the theoretical value.

In order to enable the experiment bottle 200 to be stably placed on a table top, in one embodiment, the width of the base 100 is greater than that of the experiment bottle 200, in one embodiment, the experiment bottle 200 is in a cylindrical shape with a hollow interior, the base 100 is in a cylindrical shape, and the diameter of the base 100 is greater than that of the experiment bottle 200, so that the area of the bottom surface of the base 100 is larger, the contact area with the table top is increased, and the experiment bottle 200 can be stably placed on the table top.

In order to better form the closed space in the test bottle 200, in one embodiment, the width of the test bottle 200 gradually increases from the first end of the test bottle 200 to the middle of the test bottle 200, and the width of the second end of the test bottle 200 to the middle of the test bottle 200 is equal. Specifically, the width of the first end of the experiment bottle 200 is less than the width of the second end of the experiment bottle 200, so that the width of the liquid guide port 210 is less than the width of the second end of the experiment bottle 200, thereby the area of the air in the experiment bottle 200 contacting with the outside air is reduced, and the bottle plug 300 is convenient to insert and locate in the liquid guide port 210, the air in the experiment bottle 200 is isolated from the outside air, and the bottle plug 300 is convenient to pull out from the liquid guide port 210 after the experiment is finished. Further, the width of the test bottle 200 may gradually increase from the first end of the test bottle 200 to the second end of the test bottle 200.

In order to better seal the experimental bottle 200, in one embodiment, the stopper 300 is any one of a rubber stopper, a silicone stopper and a glass cap. Specifically, the rubber is a high-elasticity polymer material with reversible deformation, is rich in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed; silica gel's thermal stability is good, does not react with any substance, is insoluble in water and any solvent, and is nontoxic tasteless, and chemical property is stable, has higher mechanical strength, and surface tension is low and surface energy is low, use rubber or silica gel preparation the bottle plug 300, all can with the lateral wall of drain 210 fully supports the butt, seals better experiment bottle 200 for the gas tightness of experiment bottle 200 is better. In this embodiment, when bottle plug 300 is the glass capping, the lateral wall of glass capping is the dull polish structure, the corresponding dull polish structure that is of lateral wall of drain hole, like this, the glass capping can with experimental bottle 300 is sealed, and further, in order to be better with the one end of burning spoon is fixed in the second connecting hole, and does not influence experimental bottle 200's gas tightness, be provided with the sealing washer in the second connecting hole, the sealing washer can be silica gel or rubber. Further, the length of the glass cover head is set to be that the bottom of the glass cover head is just inserted to a position coinciding with the rubber plug position indication line 310.

When the stopper 300 is a rubber plug or a silicone plug, in order to avoid the different insertion depths of the stopper 300 from affecting the equal division effect of the measuring cavity 222, in one embodiment, a rubber plug position indicating line 310 is disposed on the first end of the experimental bottle 200. Specifically, plug position indication line 310 sets up on the lateral wall of drain 210, plug position indication line 310 zero scale mark 600 and each the volume scale mark 500 of equalling divide the volume of survey chamber 222 equally into a plurality of equalling, plug position indication line 310 is used for instructing the degree of depth of inserting of bottle plug 300, will the bottom of bottle plug 300 is inserted and is established to with the coincidence of plug position indication line 310, like this, survey the volume of chamber 222 can just by plug position indication line 310 zero scale mark 600 and each the volume scale mark 500 of equalling divide for oxygen content determination experimental effect in the air is better, and the experimental result is more close to theoretical.

As shown in fig. 1, in order to visually demonstrate the experimental phenomenon, in one embodiment, the aliquot volume graduation mark 500 includes: first scale mark 510, second scale mark 520, third scale mark 530 and fourth scale mark 540, first scale mark 510, second scale mark 520, third scale mark 530 and fourth scale mark 540 along the second end of experiment bottle 200 to the direction of the first end of experiment bottle 200 is in proper order the equidistance interval sets up. Specifically, the fifth is equally divided into the optimal equal parts of the volume of the measurement cavity 222, the oxygen content in the air is about one fifth of the air content, and the first scale mark 510, the second scale mark 520, the third scale mark 530 and the fourth scale mark 540 equally divide the volume of the measurement cavity 222 into five equal parts, which correspond to the theoretical fraction ratio of the oxygen in the air, so that the water level in the experiment bottle 200 rises to the first scale mark 510 during the experiment, that is, the oxygen content in the air can be visually displayed. Further, the number of the aliquot volume markings 500 may be set to nine, i.e., the volume of the measurement chamber 222 is further divided into ten equal parts.

To better identify the aliquot value of the measurement cavity 222, in one embodiment, an aliquot-indicating mark 610 is provided on one end of the first tick mark 510, one end of the second tick mark 520, one end of the third tick mark 530, and one end of the fourth tick mark 540. Specifically, the aliquot indication marks 610 are used to indicate the number of the aliquot volume graduations 500 and the aliquot value of the measurement cavity 222, and each of the aliquot indication marks 610 may be arabic numerals, that is, the aliquot indication mark 610 on one end of the first graduations 510 may be set to be arabic numeral "1", the aliquot indication mark 610 on one end of the second graduations 520 may be set to be arabic numeral "2", the aliquot indication mark 610 on one end of the third graduations 530 may be set to be arabic numeral "3", and the aliquot indication mark 610 on one end of the fourth graduations 540 may be set to be arabic numeral "4", so that the aliquot value of the measurement cavity 222 can be quickly identified, and at the same time, the fraction of oxygen in the air can be more visually indicated.

In order to better identify the corresponding volume value of the experiment bottle 200 at each of the aliquot volume graduation marks 500, in one embodiment, volume indication marks are disposed on the other end of the first graduation mark 510, the other end of the second graduation mark 520, the other end of the third graduation mark 530 and the other end of the fourth graduation mark 540. Specifically, each volume indicating mark is used for indicating a volume value of the experiment bottle 200 corresponding to each aliquot volume graduation mark 500, each aliquot indicating mark 610 is an arabic numeral, that is, each aliquot indicating mark 610 corresponds to a volume value of the experiment bottle 200 corresponding to each aliquot volume graduation mark 500, so that the volume of the experiment bottle 200 can be clearly identified, and the amount of the combustion red phosphorus consuming oxygen in the experiment bottle 200 can be determined.

To better secure the vial 200 to the base 100, in one embodiment, the base 100 is integral with the vial 200. Specifically, the material of base 100 is glass, the material of experiment bottle 200 is glass, base 100 with experiment bottle 200 can carry out integrated into one piece better and make, base 100 can increase experiment bottle 200's stability makes experiment bottle 200 can place more steadily. Further, the width of the base 100 is greater than the width of the experiment bottle 200, and the base 100 can lower the gravity center position of the experiment bottle 200, so that the experiment bottle 200 has better stability when being connected with other components.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An experimental device for measuring oxygen content in air is characterized by comprising: the device comprises an experimental bottle, a base, a bottle stopper and a conduit;

2. The air oxygen content determination tester of claim 1, further comprising: and the bottle plug is provided with a second connecting hole, and one end of the burning spoon is arranged in the experiment bottle through the second connecting hole.

3. The air oxygen content measurement tester according to claim 1, wherein the width of the test bottle gradually increases from the first end of the test bottle to the middle of the test bottle, and the width of the second end of the test bottle to the middle of the test bottle is equal.

4. The air oxygen content measurement tester as claimed in claim 1, wherein a plug position indication line is provided on the first end of the test bottle.

5. The air oxygen content measurement tester of claim 4, wherein said aliquot volume calibration marks comprise: first scale mark, second scale mark, third scale mark and fourth scale mark, first scale mark the second scale mark the third scale mark with the fourth scale mark along the second end of experiment bottle arrives the direction of the first end of experiment bottle is equidistance interval setting in proper order.

6. The air oxygen content measurement tester according to claim 5, wherein an equal division indication mark is provided on one end of the first graduation mark, one end of the second graduation mark, one end of the third graduation mark and one end of the fourth graduation mark.

7. The air oxygen content measurement tester according to claim 6, wherein volume indication marks are provided on the other end of the first graduation mark, the other end of the second graduation mark, the other end of the third graduation mark and the other end of the fourth graduation mark.

8. The air oxygen content measurement tester as claimed in claim 1, wherein the base is integrally provided with the test bottle.

9. The air oxygen content determination tester as claimed in claim 8, wherein the base has a width greater than the width of the test bottle.

10. The experimental apparatus for measuring oxygen content in air according to claim 1, wherein the bottle stopper is any one of a rubber stopper, a silica gel stopper and a glass cap.