CN213601466U - Presentation device is used in electrochemistry teaching - Google Patents
Presentation device is used in electrochemistry teaching Download PDFInfo
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- CN213601466U CN213601466U CN202023116419.3U CN202023116419U CN213601466U CN 213601466 U CN213601466 U CN 213601466U CN 202023116419 U CN202023116419 U CN 202023116419U CN 213601466 U CN213601466 U CN 213601466U
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Abstract
The utility model discloses a presentation device is used in electrochemistry teaching, which comprises an outer shell, the shell in install battery, switch and detecting element, switch be connected with detecting element and battery electricity respectively, the bottom of shell still install anodal post and the negative pole post of being connected with the detecting element electricity, the shell of anodal post department on set up the spout that extends to the negative pole post, anodal post pass through the fixture block and install in the spout, the fixture block can damping motion in the spout, anodal post and negative pole post on still be connected with the electric conductor respectively, the utility model overcomes the defects of prior art, the utility model discloses a voltage and current value when the device can show measured solution conductivity in real time can also be applied to the demonstration of electrolytic bath and electroplating experiment, and carry and convenient to use.
Description
Technical Field
The utility model relates to a chemistry teaching technical field specifically belongs to a presentation device is used in electrochemistry teaching.
Background
In the teaching process of middle school chemistry, the conductivity, electrolysis and electroplating of the solution are relatively abstract concepts, and students cannot observe the processes visually, so that difficulty is brought to the learning of the students. In order to solve these problems, the current teaching demonstration device is through the in-process use bulb at measurement solution conducting capacity, the conducting capacity of solution is judged according to the change of bulb luminance, but this judgement has subjective factor, the demonstration effect is not ideal, electrolysis and electroplating need adopt different devices to demonstrate respectively simultaneously, the work load of experimental operation has been increased, consequently, need a device of being convenient for demonstrate solution conducting capacity, electrolysis and electroplating, the effect is showing simultaneously, be convenient for the student and carry out the visual observation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a presentation device is used in electrochemistry teaching has overcome the not enough of prior art.
In order to solve the above problems, the utility model adopts the following technical proposal:
the utility model provides a presentation device is used in electrochemistry teaching, includes the shell, the shell in install battery, switch and detecting element, switch be connected with detecting element and battery electricity respectively, the bottom of shell still install anodal post and the negative pole post of being connected with the detecting element electricity, the shell of anodal post department on set up the spout that extends to the negative pole post, anodal post pass through the fixture block and install in the spout, the fixture block can damping motion in the spout, anodal post and negative pole post on still be connected with the electric conductor respectively.
Preferably, the cross section of the clamping block is in an I-shaped structure, clamping grooves are formed in two sides of the clamping block, and the edge of the sliding groove is clamped in the clamping grooves.
Preferably, the electric conductor be the carbon-point, the carbon-point on still install the sliding sleeve, the sliding sleeve include flexible sleeve and two rubber circles of installing respectively in flexible sleeve both ends, two rubber circles closely cup joint on the carbon-point, and one of them is located the top of carbon-point, another is located the lower part of carbon-point.
Preferably, the detection unit is a double-display voltage ammeter.
Preferably, the conductors on the positive pole and the negative pole are metal sheets.
Compared with the prior art, the utility model discloses an implement the effect as follows: the device of the utility model can display the voltage and current value when measuring the conductivity of the solution in real time, is convenient for students to visually observe the conductivity of the solution, changes the distance between the carbon rods on the positive pole column and the negative pole column by moving the clamping block, can demonstrate the influence of the change of the distance of the carbon rods on the conductivity of the solution, and in addition, changes the exposed area of the carbon rods in the solution by moving the position of the rubber ring at the lower part of the carbon rods on the carbon rods, and can demonstrate the influence of the change of the contact area of the carbon rods and the solution on the conductivity of the solution; in addition, the device can also be applied to the demonstration of electrolytic bath and electroplating experiment after dismantling the carbon-point, and carry and convenient to use.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a fixture block;
fig. 3 is a schematic structural diagram of the installation of the sliding sleeve on the carbon rod.
Description of reference numerals: 1. a housing; 11. a chute; 2. a detection unit; 3. a power switch; 4. a carbon rod; 5. a clamping block; 51. a card slot; 6. a rubber ring; 7. a flexible sleeve; 8. a positive post; 9. and a negative pole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation to be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The demonstration device for electrochemical teaching as shown in fig. 1-3 comprises a housing 1, a storage battery, a power switch 3 and a detection unit 2 are installed in the housing 1, the detection unit 2 is a SJ-028VA type double-display voltage ammeter of shenzhen jingwei electronics ltd, the storage battery is a lithium ion battery, the power switch 3 is respectively electrically connected with the detection unit 2 and the storage battery, a positive pole 8 and a negative pole 9 which are electrically connected with the detection unit 2 are also installed at the bottom of the housing 1, a chute 11 extending towards the negative pole 9 is formed on the housing 1 at the positive pole 8, the positive pole 8 is installed in the chute 11 through a fixture block 5, the cross section of the fixture block 5 is in an i-shaped structure, two sides form a clamping groove 51, the edge of the chute 11 is clamped in the clamping groove 51, the fixture block 5 can perform damping motion in the chute 11, the positive pole 8 and the negative pole 9 are respectively connected with a conductor, the electric connection represents the connection by using a wire, the wire has flexibility, and the positive pole 8 does not influence the circuit connection with the detection unit 2 in the process of moving along with the fixture block 5.
When the device is used for measuring the conductivity of the solution, the electric conductor is the carbon rod 4, the device can display the voltage and current values in real time when the conductivity of the solution is measured, the distance between the carbon rods 4 on the positive pole column 8 and the negative pole column 9 is changed by moving the fixture block 5, and the influence of the distance of the carbon rod 4 on the conductivity of the solution can be delayed.
Install the sliding sleeve on carbon-point 4, the sliding sleeve includes that flexible sleeve 6 and two bond respectively in the rubber circle 7 at 6 both ends of flexible sleeve, flexible sleeve 6 is the rubber material, it is soft and waterproof, two rubber circles 7 closely cup joint on carbon-point 4, and one of them is located the top of carbon-point 4, another is located the lower part of carbon-point 4, position on carbon-point 4 through rubber circle 7 of 4 lower parts of removal carbon-point, change the exposed area of carbon-point 4 in solution, can demonstrate the influence of carbon-point 4 and solution area of contact's change to solution conductivity.
When the device is used for an electrolytic cell experiment, the carbon rod 4 can be used as the electric conductor on the positive pole 8 and the negative pole 9; when the device is used for carrying out an electroplating experiment, the electric conductors on the positive pole 8 and the negative pole 9 are metal sheets, wherein the metal sheet on the positive pole 8 is copper, the metal sheet on the negative pole 9 is iron, and preferably, the activity of the metal sheet on the positive pole 8 is greater than that of the metal sheet on the negative pole 9.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a presentation device is used in electrochemistry teaching, includes the shell, the shell in install battery, switch and detecting element, switch be connected its characterized in that with detecting element and battery electricity respectively: the bottom of the shell is also provided with a positive pole column and a negative pole column which are electrically connected with the detection unit, the shell at the positive pole column is provided with a chute extending towards the negative pole column, the positive pole column is arranged in the chute through a clamping block, the clamping block can perform damping motion in the chute, and the positive pole column and the negative pole column are respectively connected with a conductor.
2. The demonstration device for electrochemical teaching of claim 1, wherein: the cross section of the clamping block is of an I-shaped structure, clamping grooves are formed in two sides of the clamping block, and the edges of the sliding grooves are clamped in the clamping grooves.
3. The demonstration device for electrochemical teaching of claim 1, wherein: the electric conductor be the carbon-point, the carbon-point on still install the sliding sleeve, the sliding sleeve include flexible sleeve and two rubber circles of installing respectively in flexible sleeve both ends, two rubber circles closely cup joint on the carbon-point, and one of them is located the top of carbon-point, another is located the lower part of carbon-point.
4. The demonstration device for electrochemical teaching of claim 1, wherein: the detection unit is a double-display voltage ammeter.
5. The demonstration device for electrochemical teaching of claim 1, wherein: the electric conductors on the positive pole post and the negative pole post are metal sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023116419.3U CN213601466U (en) | 2020-12-22 | 2020-12-22 | Presentation device is used in electrochemistry teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023116419.3U CN213601466U (en) | 2020-12-22 | 2020-12-22 | Presentation device is used in electrochemistry teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213601466U true CN213601466U (en) | 2021-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023116419.3U Active CN213601466U (en) | 2020-12-22 | 2020-12-22 | Presentation device is used in electrochemistry teaching |
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| Country | Link |
|---|---|
| CN (1) | CN213601466U (en) |
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2020
- 2020-12-22 CN CN202023116419.3U patent/CN213601466U/en active Active
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