CN103971562A - Molecular gap demonstration instrument - Google Patents
Molecular gap demonstration instrument Download PDFInfo
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- CN103971562A CN103971562A CN201410210985.0A CN201410210985A CN103971562A CN 103971562 A CN103971562 A CN 103971562A CN 201410210985 A CN201410210985 A CN 201410210985A CN 103971562 A CN103971562 A CN 103971562A
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- pipe
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- heavy pipe
- thick pipe
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Abstract
The invention discloses a molecular gap demonstration instrument which comprises a lower thick pipe, an upper thick pipe and a thin pipe for displaying, wherein the lower thick pipe, the upper thick pipe and the thin pipe for displaying are connected sequentially from bottom to top. The bottom of the lower thick pipe is connected with a bottom rubber plug in a sealed mode, the upper end of the lower thick pipe is connected with a lower connecting pipe in an integrated mode, the diameter of the lower connecting pipe is less than that of the lower thick pipe, the lower end of the upper thick pipe is connected with an upper connecting pipe, the diameter of the upper connecting pipe is equal to that of the lower connecting pipe, the upper thick pipe and the lower thick pipe are connected through a connecting sleeve, one end of the connecting sleeve is arranged on the upper connecting pipe in a sleeved mode, the other end of the connecting sleeve is arranged on the lower connecting sleeve in a sleeved mode, the upper end opening of the upper thick pipe is connected with a top rubber plug in a sealed mode, the thin pipe penetrates through the top rubber plug, and the thin pipe is connected with the upper thick pipe through the top rubber plug. Compared with the prior art, the molecular gap demonstration instrument is more convenient to carry, and the whole instrument is detachable; the demonstration instrument is short in operation time, large in visibility and high in reliability, and the instrument does not need to be turned over again and again and does not leave the sight line of the students in the whole experiment process; the dynamic process of liquid level drawdown can be seen by the students.
Description
Technical field
The invention belongs to technical field of teaching instruments, particularly a kind of demonstrator of demonstrating molecular gap.
Background technology
In the scientific experiment of high school physics, junior middle school's science and primary school, all use alcohol and water combined experiments, it is to reduce to illustrate the intermolecular space that has with alcohol and water mixed volume.The visibility of experiment is still this and tests a sad ridge at present.
In existing high school physics textbook, instrument is only had to " glass tube that is about 1m " these words, there is no instrumentation, what reality was used is the glass tube that is about 1m, the sealing of one end, internal diameter about 4mm left and right.Too crude alcohol consumption is large, and adds in alcohol process, and alcohol mixes in large quantities with water, causes experimental phenomena not obvious.And there is following shortcoming in this length and thin glass tube in experimentation:
1, carry, store and operate inconvenience;
2, after the filling of two kinds of liquid, mixing and experiment, finishing time is all longer, causes the demonstration time to be wanted about 10 minutes.
3, visibility is little, and liquid level decline 2cm left and right, wants to increase visibility and will lengthen glass tube again, oversize cannot operation on classroom.
4, in pipe, add respectively after water and alcohol, block openend, glass tube is repeatedly over and over until evenly mix, and openend leaves student's sight line, and experiment confidence level is not high.
5, last result can only be seen, the overall process of smaller volume can not be dynamically shown.
Summary of the invention
The object of the invention is to carry inconvenience, demonstration poor effect and a kind of being easy to carry and the molecular gap demonstrator of good demonstration effect, the new structure easily observed that provide for existing molecule demonstrator.
The present invention, for solving the problems of the technologies described above, is achieved by the following technical solution:
Molecular gap demonstrator, comprise the lower extra heavy pipe connecting in turn from bottom to top, upper extra heavy pipe and demonstration tubule, sealed bottom at lower extra heavy pipe is connected with bottom rubber stopper, the upper end integral type of described lower extra heavy pipe is connected with the lower connecting pipe that a diameter is less than lower extra heavy pipe diameter, the lower end integral type of described upper extra heavy pipe is connected with the upper connecting pipe that a diameter equates with lower connecting pipe, described upper extra heavy pipe is connected by adapter sleeve with lower extra heavy pipe, adapter sleeve one end is socketed on connecting pipe, the other end is socketed on lower connecting pipe, in the upper end of upper extra heavy pipe, oral area is sealedly connected with top rubber stopper, described tubule runs through described top rubber stopper, tubule is connected with upper extra heavy pipe by top rubber stopper.
As preferably, in the junction of described upper extra heavy pipe and described lower extra heavy pipe, be provided with valve.
Further, described lower extra heavy pipe, upper extra heavy pipe and demonstration are transparent material with tubule.
Beneficial effect of the present invention: the present invention compared with prior art tool has the following advantages:
1, carry easily, whole device is made detachable.
2, the running time short, filling liquid and experiment after arrangement all can in the short time, complete.The original running time of about 10 minutes was shortened to about 1 minute.
3, visibility is large, and the alcohol of 20ml mixes with water, and in 1 minute liquid level decline 8cm left and right.
4, with a high credibility, need not instrument is over and over, whole experimentation does not leave student's sight line.
5, can allow student see the dynamic process that liquid level declines.
6, to further improve visibility, only need to strengthen the volume of two extra heavy pipes and show the length with tubule.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment mono-.
Fig. 2 is the structural representation of embodiment bis-.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment mono-
A kind of molecular gap demonstrator as shown in Figure 1, comprise the lower extra heavy pipe 1 connecting in turn from bottom to top, upper extra heavy pipe 2 and demonstration tubule 3, at the close bottom rubber stopper that is sealedly connected with in the bottom of lower extra heavy pipe 1, the upper end integral type of described lower extra heavy pipe 1 is connected with the lower connecting pipe 4 that a diameter is less than lower extra heavy pipe 1 diameter, the lower end integral type of described upper extra heavy pipe 2 is connected with the upper connecting pipe 5 that a diameter equates with lower connecting pipe 4, described upper extra heavy pipe 2 is connected by adapter sleeve 6 with lower extra heavy pipe 1, adapter sleeve 6 one end are socketed on connecting pipe 5, the other end is socketed on lower connecting pipe 4, in the upper end of upper extra heavy pipe 2, oral area is sealedly connected with top rubber stopper, described demonstration runs through described top rubber stopper with tubule 3, tubule is connected with upper extra heavy pipe 2 by top rubber stopper.
The about 20ml of two extra heavy pipe volumes, upper connecting pipe, lower connecting pipe and upper end show that, with the about 4mm of tubule internal diameter, upper end demonstration is about 10cm with tubule, the length of upper connecting pipe and lower connecting pipe and about 5cm, needn't be oversize.Whole overall length is less than 40cm, and except the rubber stopper of bottom, other each several parts are preferably all manufactured with transparent material.For easy to carry, integral body can split into three parts, after tearing open, is about 15cm.
If be used as student experiment in group, the volume of extra heavy pipe can be kept to 10ml, show and be kept to 2mm with tubule internal diameter, middle tubule specification is constant, also has enough visibilitys.
Two kinds of liquid using in experiment are to dye red water and colourless anhydrous alcohol.
During experiment, allow and dye in the extra heavy pipe that red water is contained in upper end, anhydrous alcohol is contained in the extra heavy pipe of lower end, before starting to observe, does not significantly mix.The extra heavy pipe of upper end and show and to fill water with tubule, anhydrous alcohol is contained in the extra heavy pipe of lower end, utilizes their density difference self-assembling formation convection current, in the short time, can be observed liquid flow and upper end tubule in liquid level obviously decline.
Embodiment bis-
Embodiment mono-is a kind of simple type instrument, needs special experiment skill during operation, can realize sooner, more simply, operate more reliably while demonstrating for teacher simultaneously, can consider to add a valve at middle control section.
A kind of molecular gap demonstrator as shown in Figure 2, comprise the flat bottle 11, valve 12, container 13 and the display tube 14 that connect in turn from bottom to top, the upper end oral area of flat bottle 11 is sealedly connected with flat bottle rubber stopper, valve 12 and container 13 are integral type structure, flat bottle rubber stopper is run through in the lower end of valve 12, in the upper end of container 13, oral area is sealedly connected with container rubber stopper, and described display tube 14 runs through described container rubber stopper.
Consider the needs of demonstration, the volume of flat bottle and spherical container approaches, about 40ml, and flat bottle is convenient to uprightly be positioned on dais; Show pipe range 30cm, internal diameter 4mm; Control section has added individual valve, and more than the aperture 5mm of valve, should be unsuitable little greatly; Tubule internal diameter and valve match, and length is shorter better.Each several part is preferably all manufactured with transparent material.
Except possessing the advantage that simple type is identical, maximum feature be operate more simply, more reliably, rapider.
Alcohol is contained in flat bottle below, container dress water above, the full top to showing with tubule, stops two kinds of liquid to mix with valve always.All these preliminary works all complete before the class, can stand up on dais, and upper class hour only need be opened valve, in half a minute, can complete experiment.
Place thick in above-mentioned two embodiment stores, and thin place is controlled; Mix in thick place, and thin place shows.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention, those ordinary skill in the art's simple change and replacement are all within protection scope of the present invention.
Claims (3)
1. molecular gap demonstrator, it is characterized in that: comprise the lower extra heavy pipe connecting in turn from bottom to top, upper extra heavy pipe and demonstration tubule, sealed bottom at lower extra heavy pipe is connected with bottom rubber stopper, the upper end integral type of described lower extra heavy pipe is connected with the lower connecting pipe that a diameter is less than lower extra heavy pipe diameter, the lower end integral type of described upper extra heavy pipe is connected with the upper connecting pipe that a diameter equates with lower connecting pipe, described upper extra heavy pipe is connected by adapter sleeve with lower extra heavy pipe, adapter sleeve one end is socketed on connecting pipe, the other end is socketed on lower connecting pipe, in the upper end of upper extra heavy pipe, oral area is sealedly connected with top rubber stopper, described tubule runs through described top rubber stopper, tubule is connected with upper extra heavy pipe by top rubber stopper.
2. molecular gap demonstrator according to claim 1, is characterized in that: the junction at described upper extra heavy pipe and described lower extra heavy pipe can be provided with valve.
3. molecular gap demonstrator according to claim 2, is characterized in that: described lower extra heavy pipe, upper extra heavy pipe, demonstration are transparent material with tubule and adapter sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210985.0A CN103971562A (en) | 2014-05-15 | 2014-05-15 | Molecular gap demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210985.0A CN103971562A (en) | 2014-05-15 | 2014-05-15 | Molecular gap demonstration instrument |
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| CN103971562A true CN103971562A (en) | 2014-08-06 |
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| CN201410210985.0A Pending CN103971562A (en) | 2014-05-15 | 2014-05-15 | Molecular gap demonstration instrument |
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| CN2854733Y (en) * | 2005-07-10 | 2007-01-03 | 莫思盟 | Instrument for demonstrating distance between molecule |
| CN201156315Y (en) * | 2008-01-16 | 2008-11-26 | 李双钰 | Demonstrator for molecular interval and molecular motion |
| CN101719328A (en) * | 2009-12-28 | 2010-06-02 | 盐城师范学院 | Molecule movement demonstrator |
| CN101958067A (en) * | 2009-07-17 | 2011-01-26 | 林义艳 | Molecular gap experimental apparatus |
| JP2011123226A (en) * | 2009-12-10 | 2011-06-23 | Univ Of Fukui | Molecule model |
| CN202306925U (en) * | 2011-11-04 | 2012-07-04 | 刘绪海 | Intermolecular gap demonstrator for primary school science |
| CN203838919U (en) * | 2014-05-15 | 2014-09-17 | 李绍聪 | Molecule gas demonstration instrument |
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2014
- 2014-05-15 CN CN201410210985.0A patent/CN103971562A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060042360A1 (en) * | 2004-08-31 | 2006-03-02 | Fuji Photo Film Co., Ltd. | Evaluation apparatus for scientific phenomena and evaluation method for scientific phenomena using the same |
| CN2854733Y (en) * | 2005-07-10 | 2007-01-03 | 莫思盟 | Instrument for demonstrating distance between molecule |
| CN201156315Y (en) * | 2008-01-16 | 2008-11-26 | 李双钰 | Demonstrator for molecular interval and molecular motion |
| CN101958067A (en) * | 2009-07-17 | 2011-01-26 | 林义艳 | Molecular gap experimental apparatus |
| JP2011123226A (en) * | 2009-12-10 | 2011-06-23 | Univ Of Fukui | Molecule model |
| CN101719328A (en) * | 2009-12-28 | 2010-06-02 | 盐城师范学院 | Molecule movement demonstrator |
| CN202306925U (en) * | 2011-11-04 | 2012-07-04 | 刘绪海 | Intermolecular gap demonstrator for primary school science |
| CN203838919U (en) * | 2014-05-15 | 2014-09-17 | 李绍聪 | Molecule gas demonstration instrument |
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| 张建武 等: ""分子之间有间隙"实验改进", 《中小学实验与装备》 * |
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Application publication date: 20140806 |
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