CN217505983U

CN217505983U - High-precision solution conductivity measuring instrument

Info

Publication number: CN217505983U
Application number: CN202220527661.XU
Authority: CN
Inventors: 胡广爱; 黄蓓蓓; 张显祖
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-09-27
Anticipated expiration: 2032-03-11

Abstract

The utility model provides a high accuracy solution conductivity measuring apparatu, the on-line screen storage device comprises a base, be equipped with the background board on the base, still be equipped with the power on the base, the power is connected with positive pole line and negative pole line, be connected with a plurality of ampere meters on the positive pole line, install a plurality of reagent bottles corresponding with the voltmeter on the base. Putting the solution into a plurality of reagent bottles, connecting circuits to the solution bottles in parallel, applying voltage to the solution and observing the reading of corresponding ampere meters, so that comparison and judgment can be quickly carried out, and the conductivity of different solutions can be obtained; the influence of the solution concentration on the conductivity can be judged by injecting distilled water into a solution bottle compatible with the syringe; simple structure, the using-way is convenient, and the experiment show is clear and definite, and teaching effect is good.

Description

High-precision solution conductivity measuring instrument

Technical Field

The utility model belongs to the technical field of chemistry experiment teaching aid, a high accuracy solution conductivity measuring apparatu is related to.

Background

The solution conductivity experiment plays an important role in middle school experiment teaching, but in classroom teaching, part of teachers complain that the effect of the existing demonstration experiment is not obvious, and the experiment teaching aid has single function and can only show whether the solution is conductive or not and can not well show other conductive characteristics of the solution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high accuracy solution conductivity measuring apparatu to the problem that prior art exists.

Therefore, the utility model adopts the following technical scheme:

the utility model provides a high accuracy solution conductivity measuring apparatu, includes the base, be equipped with background board and power on the base, the power is connected with positive line and negative pole line, be connected with a plurality of ampere meters on the positive line, install a plurality of reagent bottles with the voltmeter one-to-one on the base, the top of reagent bottle is equipped with the bottle lid, be equipped with first jack and second jack on the bottle lid, install first electrode bar in the first jack, install the second electrode bar in the second electric mortiser hole, first electrode bar is connected with first wire, first wire is connected with the negative pole line, the second electrode bar is connected with the second wire, the second wire is connected with the voltmeter that corresponds, still be equipped with the injection hole on the bottle lid, injection hole department is equipped with the syringe.

Further, the ammeter is provided with a display screen for displaying the reading of the ammeter, and the display screen is positioned on the background plate.

Furthermore, the middle part of the second lead is provided with an indicator light, and the indicator light is positioned on the background plate.

Furthermore, a plurality of clamping grooves are formed in the base, and the reagent bottles are located in the clamping grooves.

Furthermore, a slide rheostat is arranged on the positive electrode wire.

Furthermore, a voltmeter is arranged on the positive line.

Further, a switch is arranged on the positive line.

The beneficial effects of the utility model reside in that: putting the solution into a plurality of reagent bottles, connecting circuits to the solution bottles in parallel, applying voltage to the solution and observing the reading of corresponding ampere meters, so that comparison and judgment can be quickly carried out, and the conductivity of different solutions can be obtained; the influence of the solution concentration on the conductivity can be judged by injecting distilled water into a solution bottle compatible with the syringe; a slide rheostat is arranged to change the circuit voltage, and the conducting characteristics of the solution under different voltages are further tested; simple structure, the using-way is convenient, and the experiment show is clear and definite, and teaching effect is good.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure, 1-base, 2-background plate, 3-power supply, 4-positive wire, 5-negative wire, 6-ammeter, 7-indicator light, 8-reagent bottle, 9-clamping groove, 10-bottle cap, 11-first jack, 12-second jack, 13-first electrode bar, 14-second electrode bar, 15-first wire, 16-second wire, 17-injection hole, 18-injector, 19-slide rheostat, 20-voltmeter and 21-switch.

In the context of the specific embodiments thereof,

the present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1, a high-precision solution conductivity measuring instrument comprises a base 1, a background plate 2 vertically arranged is arranged on the base 1, the background plate 2 is of a hollow shell structure and can be internally used for circuit arrangement, the color of the background plate is black, the contrast can be enhanced, and the observation of students is facilitated, a power supply 3 is also arranged on the base 1, the power supply 3 adopts a direct current power supply, the power supply 3 is connected with a positive wire 4 and a negative wire 5, the positive wire 4 and the negative wire 5 are arranged inside the background plate 2, the positive wire 4 is connected with a plurality of ammeters 6, the ammeters 6 are arranged on the surface of the background plate 2 and are linearly arranged along the horizontal direction, the ammeters 6 adopt high-precision luminous digital ammeters for viewing, a plurality of reagent bottles 8 corresponding to the ammeters 6 are arranged on the base 1, specifically, a plurality of clamping grooves 9 are arranged on the base 1, the reagent bottles 8 are arranged in the clamping grooves 9, the top of the reagent bottle 8 is provided with a bottle cap 10, the bottle cap 10 can be opened to add a solvent into the reagent bottle 8, the bottle cap 10 can also prevent the temperature of the solution from rising and volatilizing under the condition of electrification, the bottle cap 10 is provided with a first jack 11 and a second jack 12, a first electrode bar 13 is installed in the first jack 11, a second electrode bar 14 is installed in the second jack 12, the first electrode bar 13 and the second electrode bar 14 are immersed in the solution when in use, the first electrode bar 13 is connected with a first lead 15, the first lead 15 is connected with a negative wire 5, the second electrode bar 14 is connected with a second lead 16, the second lead 16 is connected with an ammeter 6 corresponding to the reagent bottle 8 where the second electrode bar 14 is located, the reagent bottles 8 can be arranged in parallel in the circuit through the first lead 15, the second lead 16 and the reagent bottles 8, the current of the solution in each corresponding reagent bottle 8 can be detected through the ammeter 6, the bottle cap 10 is further provided with an injection hole 17, an injector 18 is arranged at the injection hole 17, and liquid can be injected into the reagent bottle 8 through the injector 18 in the experiment process.

The second lead 16 is also provided with an indicator light 7, the indicator light 7 can be a common bulb, the brightness of the indicator light 7 is related to the current, if the current is large, the brightness is high, and if the current is small, the brightness is low, so that the brightness of different solutions can be rapidly compared according to the brightness of the indicator light 7 during use.

The positive line 4 is provided with a slide rheostat 19 and a switch 21, the slide rheostat 19 can be a slide rheostat which is used for controlling the voltage of the whole circuit, and the positive line 4 is also provided with a voltmeter 20 which is used for measuring the voltage of the circuit, for example, the conductivity of the solution is low, the indicator lamp 7 is too low in brightness to be observed conveniently, and the current can be enhanced through the slide rheostat 19 to increase the brightness to be observed conveniently.

The utility model discloses a use as follows:

different solutions are respectively filled into the reagent bottles 8, the bottle caps 10 are tightly covered, then the first electrode rod 13 and the second electrode rod 14 are inserted into the corresponding first jack 11 and the second jack 12 on the bottle caps 10, then the switch 21 is turned on, the solution is electrified, the situation of the indicator lamp 7 can be observed after the electricity is conducted, the conductivity of the solution is judged according to the brightness of the solution, the image is visual, meanwhile, the reading of the corresponding ammeter 6 can be observed, because in a parallel circuit, the voltage at two ends of each branch electric appliance is equal, namely under the condition that the solution in each reagent bottle 8 applies the same voltage, if the current reading is larger than other comparison, the brightness of the indicator lamp 7 is higher, the corresponding solution is better in conductivity, the current reading is smaller, the brightness of the indicator lamp 7 is darker, the conductivity is lower, if the reading is zero, the corresponding solution is not conductive and is non-electrolyte, distilled water can be slowly added into the reagent bottle 8 from the injection hole 17 through the injector 18 during the experiment, and the influence of the solution concentration on the conductivity can be judged by observing the change of the reading of the display screen 7 during the addition of the distilled water.

During the use process, the voltage of the circuit can be adjusted through the sliding rheostat 19, the reading of the ammeter 6 is recorded during the adjustment process, the reading corresponding to the solution can be found to be linear, the reading corresponding to some solutions is non-linear, and the student can know the characteristics of the solution in one step.

Claims

1. A high-precision solution conductivity measuring instrument is characterized by comprising a base, wherein a background plate and a power supply are arranged on the base, the power supply is connected with a positive electrode wire and a negative electrode wire, the positive electrode wire is connected with a plurality of ammeters, the ammeters are high-precision luminous digital ammeters, the ammeters are located on the background plate, a plurality of reagent bottles which correspond to voltmeters in a one-to-one mode are installed on the base, a bottle cap is arranged at the top of each reagent bottle, a first jack and a second jack are arranged on the bottle cap, a first electrode bar is installed in the first jack, a second electrode bar is installed in the second jack, the first electrode bar is connected with a first lead, the first lead is connected with the negative electrode wire, the second electrode bar is connected with a second lead, the second lead is connected with the corresponding voltmeters, and an injection hole is further formed in the bottle cap, an injector is arranged at the injection hole.

2. A high accuracy solution conductivity measuring instrument as claimed in claim 1, wherein said second conducting wire has an indicator light at its middle part, said indicator light is located on the background plate.

3. A high accuracy solution conductivity measuring instrument as claimed in claim 1, wherein said base is provided with a plurality of slots, and said reagent bottle is located in said slots.

4. A high accuracy solution conductivity meter as claimed in claim 1, wherein said positive line is provided with a slide rheostat.

5. A high accuracy solution conductivity measuring instrument as claimed in claim 1, wherein said positive line is provided with a voltmeter.

6. A high accuracy solution conductivity meter as claimed in claim 1, wherein said positive line is provided with a switch.