CN210691783U

CN210691783U - Electrolyte aqueous solution electrolysis experimental apparatus for teaching

Info

Publication number: CN210691783U
Application number: CN201921833345.XU
Authority: CN
Inventors: 李文新
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-06-05
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses an electrolyte aqueous solution electrolysis experimental device for teaching, which comprises a base, two electrodes arranged on the base and a reaction vessel with the bottom end in sealed contact with the electrodes; the reaction vessel is H-shaped and comprises two vertically arranged and transparent observation pipes and a three-way pipe connected between the two observation pipes, wherein two ends of the three-way pipe are respectively communicated with the inside of the two observation pipes, a valve is arranged at the other end of the three-way pipe, the bottom end of each observation pipe is sealed with an electrode, a gas collecting pipe used for collecting gas is arranged at the top end of each observation pipe, and a valve is also arranged on each gas collecting pipe. The utility model discloses a water electrolysis experimental apparatus is used in teaching, it is convenient to make, low cost, operation are simpler, make preparing of chlorine, hydrogen, oxygen more convenient controllable. And, the utility model discloses the liquid volume in the reaction vessel when can controlling electrolyte aqueous solution electrolysis test to can conveniently collect the gas that the electrolysis produced, make things convenient for subsequent experimental operation.

Description

Electrolyte aqueous solution electrolysis experimental apparatus for teaching

Technical Field

The utility model relates to a teaching apparatus technical field, concretely relates to electrolyte aqueous solution electrolysis experimental apparatus is used in teaching.

Background

The electrolytic test of electrolyte aqueous solution is a conventional test in the chemistry teaching of junior high school, and the current teaching is with the electrolysis experimental apparatus several:

1. the Hoffman electrolyzer adopts a platinum electrode which is expensive, a glass container and a glass valve are easy to damage and are not beneficial to gas collection, the amount of liquid in the reaction container can not be controlled, and no automatic reaction stopping device is arranged.

2. The existing simple water electrolyzer for market teaching adopts stainless steel electrodes, and oxygen cannot be prepared at all because the stainless steel electrodes are not inert electrodes.

3. The high school teaching electrolyzer only has electrodes and a reaction container, cannot collect generated gas, and generates toxic gas to cause pollution.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides an electrolyte aqueous solution electrolysis experimental apparatus is used in teaching can control the liquid volume in the electrolyte aqueous solution electrolytic test time reaction vessel to can conveniently collect the gas that the electrolysis produced, convenient subsequent experimental operation.

The utility model discloses an above-mentioned technical problem is solved to following technical means:

an electrolyte aqueous solution electrolysis experimental device for teaching comprises a base, two electrodes arranged on the base and a reaction vessel with the bottom end in sealing contact with the electrodes; the reaction vessel is H-shaped and comprises two vertically arranged and transparent observation pipes and a three-way pipe connected between the two observation pipes, wherein two ends of the three-way pipe are respectively communicated with the insides of the two observation pipes, a valve is arranged at the other end of the three-way pipe, the bottom end of each observation pipe is hermetically arranged with an electrode, a gas collecting pipe used for collecting gas is arranged at the top end of each observation pipe, and a valve is also arranged on each gas collecting pipe.

Further, the electrode includes the rubber buffer and vertical upwards, fixed the inserting is established carbon-point in the rubber buffer, the rubber buffer is the round platform form, the carbon-point with the rubber buffer coaxial line sets up, the bottom of rubber buffer is fixed on the base, the rubber buffer is plugged in the observation tube bottom.

Further, the carbon-point overcoat is established the rubber sleeve, the rubber sleeve cover is established the middle part of carbon-point, the bottom of rubber sleeve with the rubber buffer is sealed to be set up.

Furthermore, the bottom end of the carbon rod is connected with a connector through a wire, and the connector is fixed on the side wall of the base.

Further, the top end of the rubber sleeve is higher than the water outlet port of the three-way pipe.

Furthermore, the base is of a box body structure in a cubic shape, and a plastic anti-slip pad is attached to the bottom of the base.

The beneficial effects of the utility model are embodied in: the utility model discloses an electrolyte aqueous solution electrolysis experimental apparatus is used in teaching, it is convenient to make, low cost, operation are simpler, make preparing of chlorine, hydrogen, oxygen more convenient controllable. And, the utility model discloses the liquid volume in the reaction vessel when can controlling electrolyte aqueous solution electrolysis test to can conveniently collect the gas that the electrolysis produced, make things convenient for subsequent experimental operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of an electrolytic experimental device for teaching electrolyte aqueous solution of the present invention;

FIG. 2 is a schematic view of the structure of the teaching experiment device for electrolyzing aqueous electrolyte solution according to the present invention;

FIG. 3 is a schematic structural view of a reaction vessel of the experimental apparatus for electrolyzing an aqueous electrolyte solution for teaching of the present invention;

FIG. 4 is a schematic structural view of an electrode of the electrolytic aqueous solution electrolysis experimental device for teaching of the present invention;

FIG. 5 is a schematic view of the installation structure of the electrode and the observation tube of the electrolytic water solution electrolysis experimental device for teaching of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1-5, the utility model discloses an electrolytic experiment device of electrolyte aqueous solution for teaching, including base 1, two electrodes 2 set up on base 1, and bottom and the sealed contact's of electrode 2 reaction vessel 3, base 1 is the box structure of cube form, base 1 bottom pastes and is equipped with plastic non-slip mat 12, there are two electrodes 2, connect with positive pole and negative pole of student's power respectively, connect with the positive pole of student's power for the positive pole, connect with the negative pole of student's power for the negative pole; reaction vessel 3 is H shape, including two vertical settings, transparent observation pipe 4 and the three-way pipe 5 of connection between two observation pipes 4, observation pipe 4 can choose for use transparent plastics material or glass material preparation, wherein both ends of three-way pipe 5 are linked together with two observation pipe 4 insidely respectively, be provided with valve 6 on the other end, the bottom and the sealed setting of electrode 2 of observation pipe 4, the top is provided with the discharge 7 that is used for collecting gaseous, also be provided with valve 6 on the discharge 7. The remaining end of the three-way pipe 5 is used for connecting a conduit or an injector for adding the solution into the reaction vessel 3, so that the volume of the solution in the reaction vessel 3 can be controlled, and the valve 6 on the three-way pipe 5 is closed after the solution is added. The gas collecting pipe 7 may be connected with a device for collecting gas, for example, a balloon may be sleeved on the gas collecting pipe 7, and after the valve 6 on the gas collecting pipe 7 is opened, the gas generated after the electrolytic solution is collected.

Specifically, electrode 2 includes rubber buffer 8 and vertical upwards, fixed insert the carbon-point 9 of establishing in rubber buffer 8, and rubber buffer 8 is the round platform form, and carbon-point 9 sets up with 8 coaxial lines of rubber buffer, and the bottom of rubber buffer 8 is fixed on base 1, and rubber buffer 8 is plugged in observation tube 4 bottom to make 4 bottoms of observation tube and the sealed setting of electrode 2. Thus, after the experiment is completed, the reaction vessel 3 and the electrode 2 are conveniently disassembled and then are stored.

The carbon rod 9 is sleeved with a rubber sleeve 10, the rubber sleeve 10 is sleeved at the middle part of the carbon rod 9, and the bottom end of the rubber sleeve 10 is sealed with the rubber plug 8. The top end of the rubber sleeve 10 is higher than the water outlet port of the three-way pipe 5. When the height of solution in the observation tube 4 is lower than the height of the rubber sleeve 10, the reaction is automatically stopped because the solution can not contact with the carbon rod 9, and because the top end of the rubber sleeve 10 is higher than the water outlet port of the three-way tube 5, the gas in the two observation tubes 4 can be ensured not to be mixed through the three-way tube 5 due to the liquid seal principle, and the purity of the gas in the two observation tubes 4 is ensured.

The bottom end of the carbon rod 9 is connected with a connector 11 through a wire, and the connector 11 is fixed on the side wall of the base 1. The connector 11 is conveniently and quickly connected with an external lead on a student power supply.

The utility model discloses an inert electrode is done to graphite, avoids the electrode to be electrolyzed, makes the electrolytic reaction go on in airtight environment, can observe and collect the gas that produces. Student power is used as the power supply of the electrolyzer. During experimental operation, firstly, an injector is used for filling electrolyte aqueous solution into the reaction vessel 3, a valve on the gas collecting pipe 7 is closed, then a power supply is turned on to start to generate gas, students can observe the generation condition of the gas through the observation pipes 4, if gas needs to be collected, when the generated volume of the gas is about half of that of each observation pipe 4, the valve 6 on the middle three-way pipe 5 is closed to ensure that certain reaction liquid is reserved in the reaction vessel 3 and certain gas pressure is kept in the gas collecting pipe 7, a guide pipe and an instrument are connected to the gas collecting pipe 7, the valve 6 on the gas collecting pipe 7 is opened, and the gas is collected. During the reaction, once the gas in the observation tube 4 is generated too fast to make the liquid level drop below the rubber sleeve, the reaction can automatically stop to avoid the mixing of the two gases.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides an electrolyte aqueous solution electrolysis experimental apparatus for teaching which characterized in that: comprises a base (1), two electrodes (2) arranged on the base (1) and a reaction vessel (3) with the bottom end in sealing contact with the electrodes (2); the reaction vessel (3) is H-shaped and comprises two vertically arranged and transparent observation pipes (4) and a three-way pipe (5) connected between the two observation pipes (4), wherein two ends of the three-way pipe (5) are respectively communicated with the insides of the two observation pipes (4), a valve (6) is arranged at the other end of the three-way pipe, the bottom end of each observation pipe (4) is hermetically arranged with the electrode (2), a gas collecting pipe (7) used for collecting gas is arranged at the top end of each observation pipe, and a valve (6) is also arranged on each gas collecting pipe (7).

2. The electrolytic experimental device of the electrolyte aqueous solution for teaching of claim 1, wherein: electrode (2) include rubber buffer (8) and vertical upwards, fixed insert and establish carbon-point (9) in rubber buffer (8), rubber buffer (8) are the round platform form, carbon-point (9) with rubber buffer (8) coaxial line sets up, the bottom of rubber buffer (8) is fixed on base (1), rubber buffer (8) are filled in observe in pipe (4) bottom.

3. The electrolytic experimental device of the electrolyte aqueous solution for teaching of claim 2, wherein: rubber sleeve (10) is established to carbon-point (9) overcoat, rubber sleeve (10) cover is established the middle part of carbon-point (9), the bottom of rubber sleeve (10) with rubber buffer (8) seal up the setting.

4. The electrolytic experimental device of the electrolyte aqueous solution for teaching of claim 2, wherein: the carbon rod (9) bottom is connected with connector (11) through the wire, connector (11) are fixed on the lateral wall of base (1).

5. The electrolytic experimental device of the electrolyte aqueous solution for teaching of claim 3, wherein: the top end of the rubber sleeve (10) is higher than the water outlet port of the three-way pipe (5).

6. The electrolytic experimental device of the electrolyte aqueous solution for teaching of claim 1, wherein: the base (1) is of a cubic box structure, and a plastic anti-skid pad (12) is attached to the bottom of the base (1).