Teaching experimental instrument for electrolyzed water

Abstract

The utility model provides an electrolytic water teaching experimental instrument, which relates to the technical field of teaching appliances and comprises a base, a communicating pipe is arranged on the top surface of the base, a water inlet pipe is arranged in the center of the top surface of the communicating pipe, electrode pipes are symmetrically arranged on two sides of the water inlet pipe, and the bottoms of the electrode pipes are connected with the communicating pipe. An electrode corresponding to the electrode tube is arranged in the communicating tube, the electrode is electrically connected with a power supply, and the power supply is arranged in the base; an exhaust pipe is arranged at the top end of the electrode pipe, the tail end of the exhaust pipe is connected with a hose, and a sharp-nose exhaust pipe is arranged at the tail end of the hose. According to the utility model, the integration of the water electrolysis hydrogen production experiment teaching aid is realized, the experiment operation difficulty is reduced, and the electrolysis result can be verified by igniting hydrogen at the tip exhaust pipe end.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, and in particular to an experimental instrument for teaching water electrolysis. Background Technology

[0002] The electrolysis of water experiment, a fundamental experiment in high school chemistry to explore the structure of water molecules and the constituent elements of water, is also one of the classic experiments in this subject. Water molecules are composed of hydrogen and oxygen; when an electric current passes through water, hydrogen and oxygen gases are produced. During the experiment, oxygen is produced in the positive electrode region, and hydrogen is produced in the negative electrode region. In current high school chemistry teaching, the electrolysis of water to produce hydrogen experiment has become an indispensable part of teaching equipment. However, when teachers demonstrate the experiment or students perform actual operations, multiple experimental instruments are usually required, which not only increases the complexity of the operation, but also requires igniting hydrogen gas to observe the pale blue flame for verification. This involves numerous instruments and complex operations, which can easily lead to danger. Therefore, a water electrolysis hydrogen production experimental device that facilitates observation of the hydrogen combustion flame and is easy to operate is proposed.

[0003] Utility model disclosure CN216596646U discloses a teaching device for electrolytic water hydrogen production, comprising: a power base and a water injection pipe. The power base is a DC power supply, with electrode plates connected to both poles at the top. A power switch is located on the front of the power base. The bottom of the water injection pipe is connected to a connecting pipe, one end of which is connected to a negative electrode tube, and the end of the connecting pipe away from the negative electrode tube is connected to a positive electrode tube. The bottoms of the negative and positive electrode tubes are mounted on the top of the power base with waterproof adhesive. The two electrode plates are located inside the negative and positive electrode tubes, respectively. An opening is provided at the top of the water injection pipe. While the disclosed document provides a portable teaching device for electrolytic water hydrogen production, it lacks the ability to control the hydrogen flow rate and observe the pale blue flame of hydrogen upon ignition, thus failing to fully verify the electrolysis results. Summary of the Invention

[0004] This utility model provides an experimental instrument for teaching water electrolysis, with the aim of solving at least one of the technical problems mentioned in the background art.

[0005] This utility model provides the following technical solution to achieve the above objectives:

[0006] An electrolysis water teaching experiment apparatus includes a base, a connecting pipe on the top surface of the base, a water inlet pipe at the center of the top surface of the connecting pipe, electrode tubes symmetrically arranged on both sides of the water inlet pipe, and the bottom of the electrode tubes connected to the connecting pipe; electrodes are arranged inside the connecting pipe corresponding to the electrode tubes, the electrodes are electrically connected to a power source, and the power source is located inside the base; an exhaust pipe is provided at the top of the electrode tube, the end of the exhaust pipe is connected to a flexible tube, and a pointed exhaust pipe is provided at the end of the flexible tube.

[0007] Furthermore, the electrode tube is composed of two sections with different diameters connected end to end, with the larger diameter end on top and the smaller diameter end on the bottom.

[0008] Furthermore, the electrode tube is provided with graduations for different diameter sections, with the graduations for the larger diameter sections increasing from top to bottom and the graduations for the smaller diameter sections increasing from bottom to top.

[0009] Furthermore, a support is provided between the electrode tube and the water inlet pipe.

[0010] Furthermore, a spherical funnel is provided at the top of the water inlet pipe.

[0011] Furthermore, a drain hole is provided on one side of the connecting pipe, and a gate is provided on the drain hole.

[0012] Furthermore, the exhaust pipe is connected to the hose through a tapered port with a gradually decreasing diameter.

[0013] Furthermore, a spherical buffer is provided in the middle of the exhaust pipe.

[0014] Furthermore, the hose is equipped with a flow control valve.

[0015] Furthermore, the electrode tube, connecting tube, water inlet tube, and exhaust tube are made of transparent material.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model integrates a base, connecting pipe, water inlet pipe, electrode pipe, electrode, exhaust pipe, flexible hose, and pointed exhaust pipe to achieve an integrated teaching tool for hydrogen production by electrolysis of water. This reduces the difficulty of experimental operation, and the electrolysis results can be verified by igniting hydrogen at the end of the pointed exhaust pipe.

[0019] 2. This utility model prevents water in the electrode tube from rushing upwards and causing safety hazards when hydrogen is ignited by setting the electrode tube into two sections with different diameters, with the larger diameter end on top and the smaller diameter end on the bottom.

[0020] 3. This utility model facilitates the measurement of the volume of water and gas inside the electrode tube during the electrolysis of water by setting graduations on different sections of the electrode tube corresponding to different diameters.

[0021] 4. This utility model increases the structural strength of the entire experimental instrument by setting a bracket between the electrode tube and the water inlet pipe, ensuring safety during the handling or transportation of the experimental instrument.

[0022] 5. This utility model facilitates the addition of water to the experimental instrument by setting a funnel-shaped structure at the top of the water inlet pipe; a wooden plug is matched at the top of the funnel-shaped structure to facilitate the maintenance of the experimental instrument when it is not in use and to prevent foreign objects from entering.

[0023] 6. In this invention, the exhaust pipe is connected to the flexible hose through a tapered port, which limits the flow rate of gas into the flexible hose and ensures the safety of the experiment.

[0024] 7. This utility model prevents water from rushing out of the exhaust pipe when the gas is burning by setting a spherical buffer. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Reference numerals: 1-Base; 2-Connecting pipe; 3-Inlet pipe; 4-Electrode pipe; 5-Electrode; 6-Exhaust pipe; 7-Hose; 8-Spherical funnel; 9-Support; 10-Drain hole; 11-Gradual opening; 12-Spherical buffer; 13-Pointed exhaust pipe. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0028] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Example. A teaching experimental apparatus for water electrolysis, structural reference. Figure 1 The device includes a base 1, a connecting pipe 2 on the top surface of the base 1, a water inlet pipe 3 at the center of the top surface of the connecting pipe 2, and electrode pipes 4 symmetrically arranged on both sides of the water inlet pipe 3. The bottom of the electrode pipes 4 are connected to the connecting pipe 2. An electrode 5 is arranged inside the connecting pipe 2 corresponding to the electrode pipe 4. The electrode 5 is electrically connected to a power source located inside the base. The wires of the electrode 5 pass through the base 1 and are connected to an external power source. An exhaust pipe 6 is provided at the top of the electrode pipe 4, and the end of the exhaust pipe 6 is connected to a flexible hose 7. A pointed exhaust pipe 13 is provided at the end of the flexible hose 7. This invention integrates the base 1, connecting pipe 2, water inlet pipe 3, electrode pipes 4, electrodes 5, exhaust pipe 6, flexible hose 7, and pointed exhaust pipe 13 to achieve an integrated teaching aid for hydrogen production by water electrolysis. This reduces the difficulty of experimental operation, and the electrolysis results can be verified by igniting hydrogen at the end of the pointed exhaust pipe. To facilitate teaching experiments, a rechargeable power supply is used.

[0031] The electrode tube 4 is composed of two sections with different diameters connected end to end, with the larger diameter end on top and the smaller diameter end on the bottom. By setting the electrode tube 4 to two sections with different diameters, with the larger diameter end on top and the smaller diameter end on the bottom, the water in the electrode tube 4 is prevented from rushing upwards when hydrogen is ignited, thus preventing a safety hazard.

[0032] The electrode tube 4 is marked with graduations for different diameter sections. The graduations for the larger diameter sections increase from top to bottom, while the graduations for the smaller diameter sections increase from bottom to top. By marking the electrode tube 4 with graduations for different diameter sections, it is convenient to measure the volume of water and gas inside the electrode tube 4 during the water electrolysis experiment.

[0033] A support 9 is provided between the electrode tube 4 and the water inlet pipe 3; by providing a support 9 between the electrode tube 4 and the water inlet pipe 3, the structural strength of the entire experimental instrument is increased, ensuring safety during the handling or transportation of the experimental instrument.

[0034] A spherical funnel 8 is provided at the top of the water inlet pipe 3; the spherical funnel 8 at the top of the water inlet pipe facilitates the addition of water to the experimental instruments.

[0035] A drain hole 10 is provided on one side of the connecting pipe 2, and a gate is provided on the drain hole 10. The drain hole 10 facilitates the discharge of remaining water from the connecting pipe 2 when the experiment is completed.

[0036] The exhaust pipe 6 is connected to the hose 7 through a tapered port 11 with a gradually decreasing diameter; the connection between the exhaust pipe and the hose 7 via the tapered port 11 restricts the flow of gas into the hose 7, ensuring the safety of the experiment.

[0037] A spherical buffer 12 is provided in the middle of the exhaust pipe 6; the spherical buffer is provided to prevent water from rushing out of the exhaust pipe when the gas is burning.

[0038] A flow control valve is installed on the hose 7.

[0039] The electrode tube 4, connecting tube 2, water inlet tube 3, and exhaust tube 6 are made of transparent material.

[0040] The working principle and usage of this utility model are as follows: When conducting the hydrogen production experiment by electrolysis of water, first open the cork and add water from the inlet pipe 3 until the water fills the electrode tube 4 to the bottom of the exhaust pipe 6. At this time, connect the wire of the electrode 5 to the external power supply to start the water electrolysis experiment. Hydrogen gas will be generated at the end connected to the negative terminal of the external power supply. At this time, the volume of hydrogen gas generated is measured by the scale of the larger part of the diameter of the electrode tube 4. When the required volume of hydrogen gas is generated, open the valve of the nozzle exhaust pipe 13 to let the hydrogen gas flow out and ignite. A pale blue flame can then be observed.

[0041] Obviously, the above description is only a part of the embodiments of this utility model, and not all of them. The above embodiments are not intended to limit this utility model, and various modifications and variations can be made to this utility model by those skilled in the art. Any combination, modification, equivalent substitution, improvement, and all other embodiments that can be made by those skilled in the art within the spirit and principles of this utility model should be within the protection scope of this utility model.

Claims

1. An electrolysis of water teaching laboratory apparatus, characterized in that: The device includes a base, a connecting pipe on the top surface of the base, a water inlet pipe at the center of the top surface of the connecting pipe, electrode pipes symmetrically arranged on both sides of the water inlet pipe, and the bottom of the electrode pipes connected to the connecting pipe; electrodes are arranged inside the connecting pipe corresponding to the electrode pipes, and the electrodes are electrically connected to a power source located inside the base; an exhaust pipe is arranged at the top of the electrode pipe, and the end of the exhaust pipe is connected to a flexible hose, the end of which is equipped with a pointed exhaust pipe; the electrode pipe is composed of two sections with different diameters connected end to end, with the larger diameter end on top and the smaller diameter end on the bottom.

2. The water electrolysis teaching experiment instrument according to claim 1, characterized in that: The electrode tube has graduations on different diameter sections, with the graduations on the larger diameter sections increasing from top to bottom, and the graduations on the smaller diameter sections increasing from bottom to top.

3. The water electrolysis teaching experiment apparatus according to claim 1, characterized in that: A support is provided between the electrode tube and the water inlet pipe.

4. The water electrolysis teaching experiment apparatus according to claim 1, characterized in that: A spherical funnel is provided at the top of the water inlet pipe.

5. The water electrolysis teaching experiment apparatus according to claim 1, characterized in that: A drain hole is provided on one side of the connecting pipe, and a gate is provided on the drain hole.

6. The water electrolysis teaching experiment apparatus according to claim 1, characterized in that: The exhaust pipe is connected to the hose through a tapered opening with a gradually decreasing diameter.

7. The water electrolysis teaching experiment apparatus according to claim 1, characterized in that: A spherical buffer is provided in the middle of the exhaust pipe.

8. The water electrolysis teaching experiment apparatus according to claim 1, characterized in that: The hose is equipped with a flow control valve.

9. The water electrolysis teaching experiment apparatus according to any one of claims 1 to 8, characterized in that: The electrode tube, connecting tube, water inlet tube, and exhaust tube are made of transparent material.

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