Electrolysis experiment demonstration teaching aid

Abstract

The utility model discloses an electrolysis experiment demonstration teaching aid belongs to middle school chemical experiment equipment technical field. Including electrolysis room, first gas pipe, second gas pipe, first electrode and second electrode, first electrode one end and second electrode one end are all installed in the lower place in electrolysis room, and first gas pipe and second gas pipe all install in the upper portion of electrolysis room and communicate with electrolysis room, be provided with the first gas guide structure that the gas of first electrode generates is guided to the first gas pipe in electrolysis room, be provided with the second gas guide structure that the gas of second electrode generates is guided to the second gas pipe in electrolysis room. In the case of neutral electrolyte, the device at least solves the technical problem of the existing electrolysis water experiment demonstration device, and the problems of the original device difficult to replace electrode and the original device difficult to clean are solved.

Description

Technical Field

[0001] This utility model relates to the field of secondary school chemistry experimental equipment technology, and in particular to an electrolysis experiment demonstration teaching aid. Background Technology

[0002] Conducting chemistry experiments not only solidifies students' basic knowledge but also effectively enhances their thinking and practical skills. The water electrolysis experiment serves as both a verification of the composition of water and a demonstration that the types of elements remain unchanged before and after a chemical reaction. In actual teaching, to allow students to more intuitively experience and understand the process, instructors often lead students in water electrolysis experiments in class, which requires the use of a water electrolysis demonstration apparatus.

[0003] However, existing water electrolysis demonstration apparatuses have some shortcomings: To allow gases generated by different electrodes to enter different gas containers, the electrodes are placed at the bottom of the containers, resulting in a large electrode spacing. This slows down the electrolysis reaction rate and makes the time required to generate enough gas excessive, consuming significant class time. Furthermore, the electrodes are difficult to disassemble and replace, hindering the verification of the effects of different electrode materials on the experiment. Moreover, to enhance conductivity, sulfuric acid, sodium hydroxide, or sodium sulfate are often added as electrolytes, but these electrolytes easily contaminate the apparatus, and the closed structure makes internal cleaning difficult.

[0004] Therefore, it is necessary to improve the existing water electrolysis experimental demonstration device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an electrolysis experiment demonstration teaching aid to address one of the above-mentioned problems, at least solving the technical problems of existing water electrolysis experiment demonstration devices having slow electrolysis rates, long waiting times for electrolysis, and taking up a lot of class time.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An electrolysis experiment demonstration teaching aid includes an electrolysis chamber, a first gas tube, a second gas tube, a first electrode, and a second electrode. One end of the first electrode and one end of the second electrode are both installed at a lower position within the electrolysis chamber. The first gas tube and the second gas tube are both installed at the upper part of the electrolysis chamber and communicate with it. The electrolysis chamber is provided with a first gas guiding structure to guide the gas generated by the first electrode into the first gas tube. The electrolysis chamber is also provided with a structure to guide the gas generated by the second electrode into the first gas tube.

[0008] The gas generated by the electrode is introduced into the second gas guide structure inside the second gas tube.

[0009] Furthermore, the electrolysis chamber includes a first reaction tube and a second reaction tube arranged side by side and inclined relative to the horizontal plane. Both the first and second reaction tubes are provided with connecting holes in the middle. The first gas tube is connected to the upper part of the higher end of the first reaction tube, and the second gas tube is connected to the upper part of the higher end of the second reaction tube. The first electrode is installed at the lower end of the first reaction tube, and the second electrode is installed at the lower end of the second reaction tube. A first gas guiding structure is formed at the top of the first reaction tube, and a second gas guiding structure is formed at the top of the second reaction tube.

[0010] Furthermore, it also includes a transition tube and a liquid addition tube. The higher ends of the first reaction tube and the second reaction tube are both connected to the transition tube. The liquid addition tube is vertically installed on the transition tube and connected to the transition tube. The upper part of the liquid addition tube forms a liquid addition port.

[0011] Furthermore, the device also includes a funnel, which is detachably mounted on the liquid inlet.

[0012] Furthermore, it also includes two first rubber plugs, both ends of the transition tube are sealed by the first rubber plugs.

[0013] Furthermore, it also includes two second rubber plugs, with the first electrode penetrating one of the second rubber plugs and sealing it at the lower end of the first reaction tube, and the second electrode penetrating the other of the second rubber plugs and sealing it at the lower end of the second reaction tube.

[0014] Furthermore, both the first gas pipe and the second gas pipe are provided with exhaust ports at their upper parts, and each exhaust port is provided with an exhaust structure.

[0015] Furthermore, the exhaust structure includes a third rubber plug, a vent tube, a rubber tube, a glass bulb, and an exhaust needle. The third rubber plug is sealed onto the exhaust port. The vent tube penetrates the third rubber plug. One end of the rubber tube is fitted over the outer end of the vent tube. The glass bulb is sealed inside the rubber tube. The other end of the rubber tube is connected to the exhaust needle.

[0016] Furthermore, it also includes support legs, which are disposed at the bottom of the electrolysis chamber.

[0017] Furthermore, the electrolysis chamber, the first gas tube, and the second gas tube are all made of transparent material, and scale lines are provided on both the first gas tube and the second gas tube.

[0018] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0019] 1. The two electrodes of this utility model are arranged side by side and close to each other in the electrolysis chamber. Through the first gas guiding structure and the second gas guiding structure, the gas of the two electrodes is guided separately. This can greatly accelerate the reaction rate without cross-contamination, reduce the reaction time, and solve the technical problems of slow electrolysis rate, long waiting time for electrolysis, and excessive classroom time occupied by existing water electrolysis experimental demonstration devices.

[0020] 2. This utility model adopts a tubular electrolysis chamber, a first gas tube, a second gas tube, a transition tube, and a liquid addition tube, which are sealed by detachable first rubber stoppers, second rubber stoppers, and third rubber stoppers. This allows the test tube brush to easily extend into the electrolysis chamber, the first gas tube, the second gas tube, the transition tube, and the liquid addition tube, facilitating the cleaning of the device.

[0021] 3. The electrode of this invention can be fixed by inserting it into the second rubber plug. When different materials are desired for the electrode, the material can be changed, or multiple second rubber plugs can be prepared to insert electrodes of different materials for later use. This allows for simple and inexpensive replacement of electrode materials for experiments. Attached Figure Description

[0022] Figure 1 This is a three-dimensional drawing of the present invention;

[0023] Figure 2 This is a three-dimensional view of the cross-section of this utility model.

[0024] In the attached diagram, 1-electrolysis chamber, 2-first gas tube, 3-second gas tube, 4-first electrode, 5-second electrode, 6-first reaction tube, 7-second reaction tube, 8-connecting hole, 9-transfer tube, 10-liquid addition tube, 11-funnel, 12-first rubber stopper, 13-second rubber stopper, 14-venting structure, 15-third rubber stopper, 16-venting tube, 17-rubber tube, 18-glass ball, 19-venting needle, 20-support leg, 21-gradient line. Detailed Implementation

[0025] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0026] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Please see Figure 1 and Figure 2 An electrolysis experiment demonstration teaching aid includes an electrolysis chamber 1, a first gas tube 2, a second gas tube 3, a first electrode 4, and a second electrode 5. One end of the first electrode 4 and one end of the second electrode 5 are both installed at a lower position inside the electrolysis chamber 1. The first gas tube 2 and the second gas tube 3 are both installed at the upper part of the electrolysis chamber 1 and are connected to the electrolysis chamber 1. The electrolysis chamber 1 is provided with a first gas guiding structure to guide the gas generated by the first electrode 4 into the first gas tube 2, and the electrolysis chamber 1 is provided with a second gas guiding structure to guide the gas generated by the second electrode 5 into the second gas tube 3.

[0030] In this embodiment, the electrolysis chamber 1 includes a first reaction tube 6 and a second reaction tube 7 arranged side by side and inclined relative to the horizontal plane. Both the first reaction tube 6 and the second reaction tube 7 are provided with connecting holes 8 in the middle. A first gas tube 2 is connected to the upper part of the higher end of the first reaction tube 6, and a second gas tube 3 is connected to the upper part of the higher end of the second reaction tube 7. A first electrode 4 is installed at the lower end of the first reaction tube 6, and a second electrode 5 is installed at the lower end of the second reaction tube 7. A first gas guiding structure is formed at the top of the first reaction tube 6, and a second gas guiding structure is formed at the top of the second reaction tube 7.

[0031] This embodiment also includes a transition tube 9, a liquid addition tube 10, and a funnel 11. The higher ends of the first reaction tube 6 and the second reaction tube 7 are both connected to the transition tube 9. The liquid addition tube 10 is vertically mounted on the transition tube 9 and connected to the transition tube 9. The upper part of the liquid addition tube 10 forms a liquid addition port. The funnel 11 is detachably mounted on the liquid addition port.

[0032] This embodiment also includes two first rubber plugs 12, and both ends of the transition tube 9 are sealed by the first rubber plugs 12.

[0033] This embodiment also includes two second rubber plugs 13. The first electrode 4 penetrates one of the second rubber plugs 13 and is sealed at the lower end of the first reaction tube 6 through the second rubber plug 13. The second electrode 5 penetrates the other second rubber plug 13 and is sealed at the lower end of the second reaction tube 7 through the second rubber plug 13.

[0034] In this embodiment, both the first gas pipe 2 and the second gas pipe 3 are provided with exhaust ports at their upper parts, and each exhaust port is provided with an exhaust structure 14. Specifically, the exhaust structure 14 includes a third rubber plug 15, a vent pipe 16, a rubber tube 17, a glass ball 18, and an exhaust needle 19. The third rubber plug 15 is sealed to the exhaust port, the vent pipe 16 penetrates the third rubber plug 15, one end of the rubber tube 17 is fitted over the outer end of the vent pipe 16, the glass ball 18 is sealed inside the rubber tube 17, and the other end of the rubber tube 17 is connected to the exhaust needle 19. The diameter of the glass ball 18 is larger than the diameter of the rubber tube 17. When venting, the rubber tube 17 at the glass ball 18 is squeezed by hand, creating a gap between the rubber tube 17 and the glass ball 18 to expel the gas.

[0035] This embodiment also includes support legs 20, which are disposed at the bottom of the electrolysis chamber 1. There are three support legs 20: one support leg 20 is disposed at the lower end of the electrolysis chamber 1, and another support leg 20 is disposed at the bottom of each end of the transition tube 9.

[0036] In this embodiment, the electrolysis chamber 1, the first gas tube 2, and the second gas tube 3 are all made of transparent material, and scale lines 21 are provided on both the first gas tube 2 and the second gas tube 3.

[0037] Initially, the first electrode 4 and the second electrode 5 each penetrate a second rubber plug 13. The exhaust structure 14 is integrally formed. The first electrode 4, the second electrode 5, the exhaust structure 14, the first rubber plug 12, and the funnel 11 are all separated from the main body of the device. During the experimental demonstration, the following method can be referred to:

[0038] 1. Take a clean device, insert the second rubber stopper 13 with electrodes into the openings of the first reaction tube 6 and the second reaction tube 7 respectively, insert the two first rubber tubes 17 into the two ends of the transition tube 9 respectively, and place the funnel 11 at the liquid inlet.

[0039] 2. Pour the electrolyte into the funnel 11 until the electrolyte level reaches the highest point of the scale line 21 on the first gas tube 2 and / or the second gas tube 3. Then, insert the two exhaust structures 14 into the exhaust ports of the first gas tube 2 and the second gas tube 3, respectively.

[0040] 3. Connect the exposed end of the first electrode 4 to the positive terminal of the power supply and the exposed end of the second electrode 5 to the negative terminal of the power supply. At this time, students can observe the experimental phenomena (both the inner ends of the first electrode 4 and the second electrode 5 produce bubbles, the second electrode 5 produces more bubbles than the first electrode 4, the bubbles of the first electrode 4 enter the first gas tube 2 through the top of the first reaction tube 6, and the bubbles of the second electrode 5 enter the second gas tube 3 through the top of the second reaction tube 7).

[0041] 4. After a certain period of time, it can be observed that the liquid level in the second gas tube 3 drops by approximately twice that of the first gas tube 2. Once the liquid level in the second gas tube 3 reaches the bottom of the scale, the power supply is disconnected.

[0042] 5. Conduct a gas verification experiment. During the experiment, the gas from the first gas tube 2 and the second gas tube 3 are discharged through the exhaust structure 14. When venting, the exhaust needle 19 is aimed at the flame. If the gas is observed to be flammable, it is hydrogen; if the gas is observed to support combustion, it is oxygen.

[0043] 6. When it is necessary to use electrodes made of different materials for the experiment, a rubber stopper can be used to seal the liquid filling port, so that the first electrode 4 and the second electrode 5 are upright at the highest point, and then they can be removed and replaced with electrodes made of different materials to conduct the experiment again.

[0044] 7. When the experiment is completed and the apparatus needs to be cleaned, remove all the rubber parts and use a test tube brush to thoroughly clean each tube without leaving any corners or dead spots.

[0045] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. An electrolysis experiment demonstration teaching aid, characterized in that: The device includes an electrolysis chamber, a first gas pipe, a second gas pipe, a first electrode, and a second electrode. One end of the first electrode and one end of the second electrode are both installed at a lower position inside the electrolysis chamber. The first gas pipe and the second gas pipe are both installed at the upper part of the electrolysis chamber and communicate with the electrolysis chamber. The electrolysis chamber is provided with a first gas guiding structure to guide the gas generated by the first electrode into the first gas pipe, and the electrolysis chamber is provided with a second gas guiding structure to guide the gas generated by the second electrode into the second gas pipe.

2. The electrolysis experiment demonstration teaching aid according to claim 1, characterized in that: The electrolysis chamber includes a first reaction tube and a second reaction tube arranged side by side and inclined relative to the horizontal plane. Both the first and second reaction tubes have connecting holes in their middle sections. The first gas tube is connected to the upper part of the higher end of the first reaction tube, and the second gas tube is connected to the upper part of the higher end of the second reaction tube. The first electrode is installed at the lower end of the first reaction tube, and the second electrode is installed at the lower end of the second reaction tube. A first gas guiding structure is formed at the top of the first reaction tube, and a second gas guiding structure is formed at the top of the second reaction tube.

3. The electrolysis experiment demonstration teaching aid according to claim 2, characterized in that: It also includes a transition tube and a liquid addition tube. The higher ends of the first reaction tube and the second reaction tube are both connected to the transition tube. The liquid addition tube is vertically installed on the transition tube and connected to the transition tube. The upper part of the liquid addition tube forms a liquid addition port.

4. The electrolysis experiment demonstration teaching aid according to claim 3, characterized in that: It also includes a funnel, which is detachably mounted on the liquid inlet.

5. The electrolysis experiment demonstration teaching aid according to claim 3, characterized in that: It also includes two first rubber plugs, both ends of the transition tube are sealed by the first rubber plugs.

6. The electrolysis experiment demonstration teaching aid according to claim 2, characterized in that: It also includes two second rubber plugs, the first electrode penetrates one of the second rubber plugs and is sealed at the lower end of the first reaction tube by the second rubber plug, and the second electrode penetrates the other second rubber plug and is sealed at the lower end of the second reaction tube by the second rubber plug.

7. The electrolysis experiment demonstration teaching aid according to claim 1, characterized in that: Both the first gas pipe and the second gas pipe are provided with exhaust ports at their upper parts, and each exhaust port is provided with an exhaust structure.

8. The electrolysis experiment demonstration teaching aid according to claim 7, characterized in that: The exhaust structure includes a third rubber plug, a vent tube, a rubber tube, a glass bulb, and an exhaust needle. The third rubber plug is sealed onto the exhaust port. The vent tube penetrates the third rubber plug. One end of the rubber tube is fitted over the outer end of the vent tube. The glass bulb is sealed inside the rubber tube. The other end of the rubber tube is connected to the exhaust needle.

9. The electrolysis experiment demonstration teaching aid according to claim 1, characterized in that: It also includes support legs, which are located at the bottom of the electrolysis chamber.

10. The electrolysis experiment demonstration teaching aid according to claim 1, characterized in that: The electrolysis chamber, the first gas tube, and the second gas tube are all made of transparent material, and scale lines are provided on both the first gas tube and the second gas tube.

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