A controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching

Abstract

A controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching includes multiple electrolytic cells arranged side by side. Each electrolytic cell has a cathode positioning groove near its center on its top wall. Anode positioning grooves are symmetrically arranged on both sides of the cathode positioning groove on the top wall of the electrolytic cell. The top wall of the electrolytic cell has length markings extending from the center of the cathode positioning groove to the sides of the anode positioning grooves. Using this invention allows for rapid and flexible adjustment of key experimental parameters, produces a uniform and bright coating, and effectively improves experimental efficiency.

Description

Technical Field

[0001] This utility model relates to an experimental device, and more particularly to an electrolytic cell device for high school chemistry teaching. Background Technology

[0002] Current textbooks use traditional single-anode electrolytic cells for electroplating experiments: copper sheets are used as the anode, iron sheets as the cathode, and a copper-ammonia solution is used as the electrolyte; the experiment is conducted by applying electricity. This existing technology has the following technical drawbacks:

[0003] 1. Coating quality defects and environmental pollution: In traditional electroplating experiments (copper-iron electrode system, copper ammonia solution electrolyte), the uneven current density distribution of a single anode leads to a significant electric field gradient on the cathode surface, ultimately resulting in process defects such as differences in coating thickness and uneven surface roughness on the front and back sides. At the same time, the copper ammonia complex system continuously releases irritating gases such as NH3 during electrolysis, causing environmental pollution in the experiment.

[0004] 2. Lack of control over key parameters: According to the physical formula "U=Ed", the electrode distance d is an important factor affecting the coating effect. Traditional electroplating experimental devices adopt a fixed electrode distance of 5cm, which cannot achieve continuous adjustment of the d value.

[0005] 3. Bottleneck in experimental efficiency: When exploring the influence of polar distance or other factors, it is necessary to repeatedly disassemble and reassemble the device to adjust the parameters, which takes a long time for each experiment and seriously reduces the efficiency of teaching experiments. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the existing technology by providing a controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching, which can quickly and flexibly adjust key experimental parameters, produce a uniform and bright coating, and effectively improve experimental efficiency.

[0007] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching, including multiple electrolytic cells arranged side by side, each electrolytic cell having a cathode positioning groove at the middle position of the top wall of the top wall, and anode positioning grooves symmetrically arranged on the left and right sides of the cathode positioning groove on the top wall of the electrolytic cell, and length scales extending from the corresponding position of the center of the cathode positioning groove to the sides of the anode positioning grooves on both sides of the top wall of the electrolytic cell.

[0008] A further technical solution of this utility model is: it includes three electrolytic cells arranged side by side, each electrolytic cell having a cuboid structure. The three electrolytic cells are arranged side by side in sequence. The cathode positioning groove is a circular through hole located near the center of the top wall of each electrolytic cell. The anode positioning groove is a rectangular through hole symmetrically arranged on the left and right sides of the cathode positioning groove with an overall rectangular outline. The length scale is located on the outer edge of the same side of the anode positioning groove. The 0 point of the length scale corresponds to the center of the cathode positioning groove. The length scale value gradually increases from the middle towards the side of the anode positioning groove.

[0009] A further technical solution of this utility model is: each anode positioning groove has positioning protrusions that are spaced apart from each other on the side wall of the side where the length scale is located.

[0010] A further technical solution of this utility model is that the intervals between adjacent positioning protrusions are equal.

[0011] A further technical solution of this utility model is: each anode positioning groove has a positioning protrusion protruding inward at length scales of 2cm, 4cm, and 6cm.

[0012] This utility model discloses a distance-controlled dual-anode parallel electrolytic cell device for high school chemistry teaching, which has the following advantages: 1. Length scales are set at the corresponding position in the center of the cathode positioning tank and on the sides of the anode positioning tanks on both sides, allowing for a direct observation of the effect of different distances on the coating, easily finding the optimal experimental conditions, and enabling free adjustment of the electrode distance within 1-6 cm, allowing for a direct and quick comparison of the experimental effects of different electrode distances; 2. Anode positioning tanks are symmetrically set on both sides of the cathode positioning tank, with anodes placed in each tank, allowing for uniform copper plating on both sides simultaneously, reducing the difference in smoothness between the two sides of the coating, and eliminating the phenomenon of uneven plating in traditional experiments; 3. The three electrolytic cells are set up side by side, enabling simultaneous parallel operation of the three electrolytic cells, which improves experimental efficiency, reduces the number of experiments, and saves class time compared to traditional single-tank series operation.

[0013] The following description, in conjunction with the accompanying drawings and embodiments, further illustrates a controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching according to this utility model. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching according to this utility model;

[0015] Figure 2 yes Figure 1 An enlarged view of an electrolytic cell;

[0016] Explanation of the reference numerals: 1-Tannel A, 2-Tannel B, 3-Tannel C, 4-Electrolytic cell, 5-Cathode positioning tank, 6-Anode positioning tank, 7-Top wall of electrolytic cell, 8-Positioning protrusion. Detailed Implementation

[0017] like Figure 1 , Figure 2 As shown, this utility model discloses a controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching, which includes multiple electrolytic cells 4 arranged side by side. In this embodiment, it includes three electrolytic cells 4 arranged side by side. Of course, as a variation of this utility model, the number of electrolytic cells 4 is not limited to three and can be other values ​​according to experimental needs.

[0018] like Figure 1 As shown, each electrolytic cell 4 has a cuboid structure, and three electrolytic cells 4 are arranged side by side in sequence. The three electrolytic cells 4 are cell A1, cell B2, and cell C3. A cathode positioning groove 5 is provided near the center of the top wall 7 of each electrolytic cell. The cathode positioning groove 5 is a circular through-hole located near the center of the top wall 7 of each electrolytic cell, penetrating the top wall 7. Anode positioning grooves 6 are symmetrically arranged on the left and right sides of the cathode positioning groove 5 of the top wall 7, forming a double-anode structure. The anode positioning grooves 6 are rectangular through-holes symmetrically arranged on the left and right sides of the cathode positioning groove 5, with an overall rectangular outline, penetrating the top wall 7. The top wall 7 of the electrolytic cell has length markings extending from the center of the cathode positioning groove 5 to the sides of the anode positioning grooves 6. The length scale is set on the outer edge of the same side of the anode positioning groove 6. The 0 point of the length scale corresponds to the center of the cathode positioning groove 5. The length scale gradually increases from the center towards the sides of the anode positioning groove 6. The distance from the anode positioning groove 6 to the center of the cathode positioning groove 5 can be directly read from the length scale on the side of the anode positioning groove 6. Each anode positioning groove 6 has positioning protrusions 8 protruding inward on the side wall where the length scale is located. The spacing between adjacent positioning protrusions 8 is equal. Each anode positioning groove 6 has positioning protrusions 8 protruding inward at length scales of 2cm, 4cm, and 6cm. The anode can be positioned in the corresponding position of the positioning protrusions 8 by snapping.

[0019] The three electrolytic cells can share the same student power supply (1-6V). The positive terminal of the power supply is connected in parallel to the dual anodes of each cell, and the negative terminal is connected to the cathodes of each cell, forming an independent circuit. After power is applied, the current flows from the dual anodes to the central cathode, and metal ions (such as Cu²⁺) in the electrolyte are uniformly deposited on the cathode surface. The symmetrical layout of the dual anodes eliminates the electric field gradient on one side, ensuring that the coating thickness is consistent on both sides. Adjusting the electrode spacing (d value) can change the electric field intensity distribution. Combined with the parallel design of the three cells, the influence of different parameters (such as electrode spacing and concentration) on the coating quality can be verified simultaneously.

[0020] Electroplating experiments were conducted using the controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching according to the following process steps:

[0021] 1. Electrolyte injection and spacing adjustment: Inject electrolyte into each electrolytic cell. The cathode (iron sheet, not shown in the figure) is positioned in the cathode positioning groove by a buckle (not shown in the figure), and the anode (copper sheet, not shown in the figure) is positioned in the anode positioning groove on both sides by a buckle (not shown in the figure). Slide the anode to the preset spacing (such as 2cm, 4cm, 6cm) according to the experimental target, and fix it by the buckle. The two anodes can also move freely within 1-6cm.

[0022] 2. Powering on and Observing: Connect the student power supply and set the voltage (1-6V), start the electrolysis process, observe the morphology, thickness and uniformity of the coating on the cathode surface, and record the experimental data under different electrode distances;

[0023] 3. Multivariate comparison: By setting different parameters synchronously in parallel with three slots (such as slot A pole distance 2cm, slot B pole distance 4cm, and slot C pole distance 6cm), multiple comparisons can be completed in a single experiment, avoiding the repeated disassembly and assembly operations of traditional devices and significantly improving efficiency.

[0024] The above embodiments are merely preferred embodiments of this utility model. The structure of this utility model is not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A distance-controlled double anode parallel electrolytic cell device for high school chemistry teaching, characterized in that, It includes multiple electrolytic cells (4) arranged side by side. Each electrolytic cell has a cathode positioning groove (5) located in the middle of its top wall (7). Anode positioning grooves (6) are symmetrically arranged on the left and right sides of the cathode positioning groove (5) on the top wall (7) of the electrolytic cell. The top wall (7) of the electrolytic cell has length scales extending from the center of the cathode positioning groove (5) to the sides of the anode positioning grooves (6) on both sides.

2. The distance-controlled double anode parallel electrolytic cell device for high school chemistry teaching according to claim 1, characterized in that, It includes three electrolytic cells (4) arranged side by side. Each electrolytic cell (4) has a cuboid structure. The three electrolytic cells (4) are arranged side by side in sequence. The cathode positioning groove (5) is a circular through hole located in the middle of the top wall (7) of each electrolytic cell. The anode positioning groove (6) is a rectangular through hole symmetrically arranged on the left and right sides of the cathode positioning groove (5) with an overall rectangular outline. The length scale is set on the outer edge of the same side of the anode positioning groove (6). The 0 point of the length scale corresponds to the center of the cathode positioning groove (5). The length scale value gradually increases from the middle to the side of the anode positioning groove (6).

3. The distance-controlled double anode parallel electrolytic cell device for high school chemistry teaching according to claim 2, characterized in that, Each anode positioning groove (6) has positioning protrusions (8) that protrude inward from the side wall on the side where the length scale is located.

4. The controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching as described in claim 3, characterized in that, The spacing between adjacent positioning protrusions (8) is equal.

5. The controlled-distance dual-anode parallel electrolytic cell device for high school chemistry teaching as described in claim 3, characterized in that, Each anode positioning groove (6) has a positioning protrusion (8) protruding inward at length scales of 2cm, 4cm, and 6cm.

Images