CN2876941Y - Teaching aid for chemical experiment - Google Patents
Teaching aid for chemical experiment Download PDFInfo
- Publication number
- CN2876941Y CN2876941Y CN 200520125605 CN200520125605U CN2876941Y CN 2876941 Y CN2876941 Y CN 2876941Y CN 200520125605 CN200520125605 CN 200520125605 CN 200520125605 U CN200520125605 U CN 200520125605U CN 2876941 Y CN2876941 Y CN 2876941Y
- Authority
- CN
- China
- Prior art keywords
- panel
- fixed
- chemical experiment
- pilot lamp
- electrode bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The utility model discloses a teaching aid for chemical experiment comprising a vertically arranged panel and a horizontally arranged insulating board. The utility model is characterized in that: four to eight indicator lights are fixed on the panel; electrode bars are fixed on the insulating board; two of the electrode bars form one group and connects with the fixed indicator light circuit on the panel; each indicator light, the electrode bar electrically connected with it, the other indicator lights and electrode bars connect in parallel circuit; the whole circuit and the link power plug connect electrically; by adopting four groups carbon rods or above in test, the experiment of whether four materials and their solutions are electrically conductive can be carried out at the same time which can save time and give prominence to the comparability of experimental phenomena; and the carbon rods used as electrodes can be continuously used for many years without the corrosion of chemical reagent.
Description
Technical field
The utility model relates to a kind of experiment equipment, specifically, relates to the chemical experiment teaching appliance.
Background technology
When talking about the character of solution in the junior middle school chemistry teaching material, the teaching material of different editions is all set forth the electric conductivity of solution as an important properties.In the test, measure different material and when different conditions, whether have electric conductivity.If every kind of solution is test respectively, time-consuming more, and also experimental phenomena easily obscures, and produces the alienation effect, and effect is bad.
Summary of the invention
The purpose of this utility model provides a kind of chemical experiment teaching appliance that can allow multiple material test simultaneously.
For achieving the above object, the technical scheme that the utility model adopted is: the chemical experiment teaching appliance, described teaching appliance comprises the panel of vertical setting, horizontally disposed insulcrete, it is characterized in that: be fixed with 4～8 pilot lamp on the described panel, described insulcrete is fixed with electrode bar, two of described electrode bars form one group and be connected with fixing indicator light circuit on the panel, each pilot lamp and with the electrode bar of its electrical connection and other pilot lamp, electrode bar between parallel circuit be connected, entire circuit and the plug that is connected power supply are electrically connected.
Below be the improvement of such scheme:
Described pilot lamp is 4～8 15W bulbs that are electrically connected in parallel.
Described electrode bar is the refuse battery carbon-point.
The utility model adopts said structure, compared with prior art has the following advantages:
(1), package unit is generous naturally, gives aesthetic feeling, during design with a two-wire plug control power supply, the red blue dichromatism of lead, very eye-catching, during wiring, visualize as far as possible, outstanding consciousness in parallel, the student comes into plain view, and is convenient to carrying out of problem.
(2), bulb uses the incandescent lamp of bigger 15W, small electric bulb pilot lamp more in the past is many greatly, during test, is convenient to phenomenon to the full student of class demonstration, many bulbs pendulum can better be demonstrated on panel, are convenient to the student and understand.
(3), the test in use power for illumination, very convenient.
(4), adopt four groups or four groups of above carbon-points in the test, can carry out the test whether four kinds of materials and solution thereof conduct electricity simultaneously, both save the time, given prominence to the comparability of experimental phenomena again, make electrode with carbon-point in addition, be not subjected to the corrosion of chemical reagent, can use for years.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is the structural representation of the utility model embodiment.
Embodiment
As shown in the figure, the chemical experiment teaching appliance, described teaching appliance comprises the panel 1 of vertical setting, horizontally disposed insulcrete 2, be fixed with 4 pilot lamp 31 on the described panel 1,32,33,34, described insulcrete is fixed with electrode bar 4,4 two of described electrode bars form one group and be connected with fixing indicator light circuit on the panel, each pilot lamp and the electrode bar that is electrically connected with it and other pilot lamp, parallel circuit connects between the electrode bar, entire circuit is electrically connected with the plug 5 that is connected power supply, described pilot lamp 3 is the 15W bulb that is electrically connected in parallel, described electrode bar 4 is the refuse battery carbon-point, manufacturing process is, 4 of the incandescent lamps of preparation 15w, 8 of waste battery band chapeau de fer carbon-points, insulcrete 2 is selected one of the veneer of 0.5cm * 3cm * 40cm for use, 4 50ml beakers, 1 250ml beaker, 1 in glue head dropper, panel 1 is selected one of standing tree plate 35cm * 20cm of band base 35cm * 10cm * 1.5cm * 2.5cm for use, red lead, blue each 200cm of lead, mackintosh one dish, one of two-wire plug, screw a little.Medicine comprises: distilled water, salt, sucrose, NaOH.During making,, insert carbon-point apart from the end 2cm place boring of veneer 0.5cm * 3cm * 40cm, allow the chapeau de fer of carbon-point flush, bore a hole again, insert second carbon-point every the 3cm place with plank, make them become one group of carbon-point, apart from this group carbon-point 4cm place, bored second group of hole by above operation, assemble second group of carbon-point, assemble the 3rd group, the 4th group more successively, allow 8 in good order coming on the plank of carbon-point, the other end stays the length about 10cm, during with convenient experiment to the operation of plank.On the standing tree plate, fix red, blue lead respectively, red line is interior, and blue line is outside, at interval 2cm severs 3 place's openings every 4cm above red line, connects the red lead of 3 10cm, inserts 4 level lampholders respectively together with the red lead on the right, fix, same, below blue line, connect 3 blue leads.8 leads weld with soldering with the chapeau de fer of carbon-point respectively.With two copper sheets in the other end access two-wire plug of red blue lead.Respectively the electric leakage position is twined with mackintosh.This device has utilized the parallel circuit knowledge in the physics, and four bulbs are together in parallel, and when holding the material of conduction in the beaker, the carbon-point that is in off state forms the loop, and bulb is luminous.Experimentation may further comprise the steps: (1), add an amount of distilled water, salt, sucrose, NaOH respectively in four beakers, a little is as the criterion with the submergence carbon-point.(2), four groups of carbon-points are stretched in the corresponding beaker, energized, whether observe bulb luminous.(3), in salt, sucrose, 3 beakers of NaOH, pour an amount of distilled water respectively into, whether observe bulb luminous, the bulb of beaker correspondence that holds salt solution, sodium hydroxide solution is luminous, and along with the prolongation bulb brightness of time increases, the bulb that holds the beaker correspondence of distilled water, sucrose solution does not still work).(4), finish experiment, pull up two-wire plug, draw the distilled water flushing carbon-point with glue head dropper.
Claims (3)
1, chemical experiment teaching appliance, described teaching appliance comprises the panel (1) of vertical setting, horizontally disposed insulcrete (2), it is characterized in that: be fixed with 4～8 pilot lamp (31,32,33,34) on the described panel (1), described insulcrete (2) is fixed with electrode bar (4), (4) two of described electrode bars form one group and be connected with fixing indicator light circuit on the panel, each pilot lamp and with the electrode bar of its electrical connection and other pilot lamp, electrode bar between parallel circuit be connected, entire circuit is electrically connected with the plug that is connected power supply (5).
2, chemical experiment teaching appliance as claimed in claim 1 is characterized in that: described pilot lamp (3) is 4～8 15W bulbs that are electrically connected in parallel.
3, chemical experiment teaching appliance as claimed in claim 1 or 2 is characterized in that: described electrode bar (4) is the refuse battery carbon-point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125605 CN2876941Y (en) | 2005-12-08 | 2005-12-08 | Teaching aid for chemical experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125605 CN2876941Y (en) | 2005-12-08 | 2005-12-08 | Teaching aid for chemical experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876941Y true CN2876941Y (en) | 2007-03-07 |
Family
ID=37820178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520125605 Expired - Fee Related CN2876941Y (en) | 2005-12-08 | 2005-12-08 | Teaching aid for chemical experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876941Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707117A (en) * | 2016-12-07 | 2017-05-24 | 云南电网有限责任公司曲靖供电局 | Multi-electrode fast insulation detector |
-
2005
- 2005-12-08 CN CN 200520125605 patent/CN2876941Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707117A (en) * | 2016-12-07 | 2017-05-24 | 云南电网有限责任公司曲靖供电局 | Multi-electrode fast insulation detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |