High school chemistry visual reaction device for demonstrating gas properties

Abstract

A high school chemistry visual reaction device for demonstrating gas properties comprises a base, a reaction unit, an observation unit and a collection unit. An anti-skid pad is arranged at the bottom of the base, a fixing hole is formed in the top of the base, a power switch is arranged on the side face of the base, the reaction unit comprises a reaction container, the reaction container is arranged at the top of the base, a mounting frame is fixedly connected to the bottom of the reaction container, and a fixing screw penetrates through the top of the mounting frame. And the circumferential surface of the fixing screw is in threaded connection with the interior of the fixing hole. The chemical experiment device can be suitable for demonstration experiments of various gas properties, chemical experiments of different types can be carried out by means of adjusting temperature, adding different reactants and the like, and the chemical experiment device has a wide application range and can meet diversified requirements of chemical teaching in senior high schools.

Description

Technical Field

[0001] This invention belongs to the technical field of chemical experimental apparatus, and in particular relates to a visual reaction apparatus for demonstrating the properties of gases in high school chemistry. Background Technology

[0002] In high school chemistry teaching, demonstration experiments on the properties of gases are an important way to help students understand chemical knowledge. However, existing gas property demonstration devices have many shortcomings. For example, some devices are complex in structure and cumbersome to operate, making it inconvenient for students to conduct experiments; some devices cannot intuitively and clearly demonstrate the formation, color changes, and reaction processes of gases with other substances, making it difficult for students to accurately understand gas properties through experimental observation; and some devices have poor safety, and when conducting demonstration experiments on the properties of corrosive or toxic gases, dangerous situations such as gas leaks can easily occur, threatening the health of teachers and students. Therefore, there is an urgent need to design a gas property demonstration device that is simple in structure, easy to operate, has good visualization effects, and is highly safe. Utility Model Content

[0003] The purpose of this invention is to provide a high school chemistry visualization reaction device for demonstrating the properties of gases, in order to solve the problems of complex structure, poor visualization effect and low safety of existing gas property demonstration devices, and to make the gas property demonstration process more intuitive, convenient and safe, so as to facilitate students' observation and understanding of gas properties.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model is a high school chemistry visualization reaction device for demonstrating the properties of gases, including a base, a reaction unit, an observation unit, and a collection unit;

[0006] The base has an anti-slip pad at the bottom and a fixing hole at the top. A power switch is located on the side of the base. The anti-slip pad effectively prevents the device from sliding on the experimental platform, ensuring the stability of the experimental process. The fixing hole is used to fix other unit components.

[0007] Furthermore, the reaction unit includes a reaction vessel, which is disposed on top of the base. A mounting bracket is fixedly connected to the bottom of the reaction vessel, and a fixing screw passes through the top of the mounting bracket. The circumferential surface of the fixing screw is connected to the internal thread of the fixing hole. A sealing cover is provided on the top of the reaction vessel. The top of the sealing cover has an air inlet, an air outlet, and a feeding port. A sealing plug is connected to the internal thread of the feeding port. The air inlet is used to introduce the gas or air required for the reaction. The air outlet is connected to a collection unit for discharging the gas generated by the reaction. The feeding port is used to add solid or liquid reactants. The sealing plug is opened when reactants are added and tightened after addition to ensure the sealing of the reaction vessel.

[0008] Furthermore, a heating assembly is provided on the circumferential surface of the reaction vessel. The heating assembly includes a heater, a ring-shaped electric heating wire is provided on the top of the heater, and a heat insulation sleeve is provided on the circumferential surface of the ring-shaped electric heating wire. A temperature adjustment knob is provided on the side of the base. The bottom of the heater is electrically connected to the temperature adjustment knob. The temperature adjustment knob can control the heating temperature of the ring-shaped electric heating wire, thereby meeting the temperature requirements of different chemical reactions. The heat insulation sleeve prevents operators from being burned and reduces heat loss.

[0009] Furthermore, the reaction vessel is equipped with a stirring assembly, which includes a micro motor. The bottom of the micro motor is fixedly connected to the top of the sealing cover. The output end of the micro motor is fixedly connected to a rotating shaft. The circumferential surface of the rotating shaft passes through and is rotatably connected to the top of the sealing cover. A stirring paddle is fixedly connected to the circumferential surface of the rotating shaft. A motor wire is electrically connected to the top of the micro motor. A motor switch is provided on the side of the base. The other end of the motor wire is electrically connected to the motor switch. This allows the reactants to be fully mixed, accelerates the reaction rate, and makes the reaction more complete.

[0010] Furthermore, the observation unit includes an observation window, which is disposed on the circumferential surface of the reaction vessel. A light is installed on the top of the observation window, and a light wire is electrically connected to the top of the light. A light switch is installed on the side of the base, and one end of the light wire is electrically connected to the light switch. The observation window is made of high-definition transparent glass, and its surface has been specially treated to have an anti-fog function, ensuring that students can always clearly observe the experimental phenomena inside the reaction vessel. The light provides sufficient light for the observation window, facilitating observation in low-light conditions.

[0011] Furthermore, the collection unit includes a gas collection bottle, the bottom of which is fixedly connected to the top of the base. A gas guide tube is fixedly inserted through the top of the gas collection bottle. The circumferential surface of the gas guide tube is fixedly connected to the inside of the gas outlet. A one-way valve is provided on the circumferential surface of the gas guide tube. A scale line is provided on the circumferential surface of the gas collection bottle. A processing port is fixedly inserted through the circumferential surface of the gas collection bottle. The one-way valve can prevent gas backflow, and the scale line facilitates accurate measurement of the collected gas volume.

[0012] Furthermore, an absorption bottle is fixedly inserted through the circumferential surface of the processing port, and the bottom of the absorption bottle is fixedly connected to the top of the base. The absorbent liquid inside the absorption bottle is selected according to the properties of different gases, which can effectively absorb the toxic and harmful gases generated in the reaction, prevent them from being emitted into the air and causing pollution, and ensure the safety of the experimental environment.

[0013] This utility model has the following beneficial effects:

[0014] Excellent visualization: The transparent reaction container and observation window, along with the lighting and anti-fogging treatment, allow students to clearly observe experimental phenomena such as gas generation, color changes, and reactions with other substances. This visualization of gas properties from multiple perspectives helps students better understand gas properties and reaction principles.

[0015] Easy to operate: The structure of each component of the device is reasonably designed, and the interfaces such as the feeding port, air inlet, and air outlet are scientifically laid out, which facilitates the addition of reactants and connection to other equipment; the power switch, motor switch, light switch and other control components are centrally located on the base, making operation simple and convenient, and students can quickly get started to carry out experimental operations.

[0016] High safety: The sealed design of the reaction vessel and the setting of the one-way valve effectively prevent gas leakage; the design of the heat insulation layer and anti-slip pad ensures the safety of operators; the exhaust gas treatment device can promptly treat toxic and harmful gases, avoiding harm to the environment and the health of teachers and students.

[0017] Highly practical: This device is suitable for demonstration experiments on various gas properties. By adjusting the temperature and adding different reactants, different types of chemical experiments can be carried out. It has a wide range of applications and can meet the diverse needs of high school chemistry teaching. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the three-dimensional appearance of the present invention from a first-person perspective;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention from a second-view three-dimensional cross-section;

[0020] Figure 3This utility model Figure 1 A three-dimensional magnified structural diagram of A in the diagram;

[0021] Figure 4 This utility model Figure 2 A three-dimensional magnified structural diagram of B.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Base; 11. Anti-slip pad; 12. Fixing hole; 13. Power switch; 2. Reaction unit; 21. Reaction container; 22. Mounting bracket; 23. Fixing screw; 24. Sealing cap; 25. Gas inlet; 26. Gas outlet; 27. Feeding port; 28. Sealing plug; 29. ​​Heating assembly; 291. Heater; 292. Ring heating wire; 293. Heat insulation sleeve; 294. Temperature adjustment knob; 210. Stirring assembly; 2101. Micro motor; 2102. Rotating shaft; 2103. Stirring paddle; 2104. Motor wire; 2105. Motor switch; 3. Observation unit; 31. Observation window; 32. Lighting lamp; 33. Lighting wire; 34. Lighting switch; 4. Collection unit; 41. Gas collection bottle; 42. Gas guide tube; 43. One-way valve; 44. Scale line; 45. Processing port; 46. Absorption bottle. Detailed Implementation

[0024] A high school chemistry visualization reaction device for demonstrating the properties of gases includes a base 1, a reaction unit 2, an observation unit 3, and a collection unit 4. The bottom of the base 1 is provided with an anti-slip pad 11, the top of the base 1 is provided with a fixing hole 12, and the side of the base 1 is provided with a power switch 13. The anti-slip pad 11 can effectively prevent the device from sliding on the experimental platform and ensure the stability of the experimental process. The fixing hole 12 is used to fix other unit components.

[0025] As shown in the figure, the reaction unit 2 includes a reaction container 21, which is located on top of the base 1. A mounting bracket 22 is fixedly connected to the bottom of the reaction container 21, and a fixing screw 23 passes through the top of the mounting bracket 22. The circumferential surface of the fixing screw 23 is connected to the internal thread of the fixing hole 12. A sealing cover 24 is provided on the top of the reaction container 21. The top of the sealing cover 24 has an air inlet 25, an air outlet 26, and a feeding port 27. A sealing plug 28 is connected to the internal thread of the feeding port 27. The air inlet 25 is used to introduce the gas or air required for the reaction. The air outlet 26 is connected to the collection unit 4 and is used to discharge the gas generated by the reaction. The feeding port 27 is used to add solid or liquid reactants. The sealing plug 28 is opened when adding reactants and tightened after addition to ensure the sealing of the reaction container 21.

[0026] As shown in the figure, a heating component 29 is provided on the circumferential surface of the reaction vessel 21. The heating component 29 includes a heater 291, an annular electric heating wire 292 is provided on the top of the heater 291, and a heat insulation sleeve 293 is provided on the circumferential surface of the annular electric heating wire 292. A temperature adjustment knob 294 is provided on the side of the base 1. The bottom of the heater 291 and the temperature adjustment knob 294 are electrically connected. The temperature adjustment knob 294 can control the heating temperature of the annular electric heating wire 292, thereby meeting the temperature requirements of different chemical reactions. The heat insulation sleeve 293 prevents operators from being burned and reduces heat loss.

[0027] As shown in the figure, a stirring assembly 210 is installed inside the reaction vessel 21. The stirring assembly 210 includes a micro motor 2101. The bottom of the micro motor 2101 is fixedly connected to the top of the sealing cover 24. The output end of the micro motor 2101 is fixedly connected to a rotating shaft 2102. The circumferential surface of the rotating shaft 2102 passes through and is rotatably connected to the top of the sealing cover 24. A stirring paddle 2103 is fixedly connected to the circumferential surface of the rotating shaft 2102. A motor wire 2104 is electrically connected to the top of the micro motor 2101. A motor switch 2105 is provided on the side of the base 1. The other end of the motor wire 2104 is electrically connected to the motor switch 2105. This allows the reactants to be fully mixed, accelerates the reaction rate, and makes the reaction more complete.

[0028] As shown in the figure, the observation unit 3 includes an observation window 31, which is set on the circumference of the reaction vessel 21. A light 32 is set on the top of the observation window 31, and a light wire 33 is electrically connected to the top of the light 32. A light switch 34 is set on the side of the base 1, and one end of the light wire 33 is electrically connected to the light switch 34. The observation window 31 is made of high-definition transparent glass and its surface has been specially treated to have an anti-fog function, which can ensure that students can always clearly observe the experimental phenomena inside the reaction vessel 21. The light 32 can provide sufficient light for the observation window 31, which is convenient for observation in the case of insufficient light.

[0029] As shown in the figure, the collection unit 4 includes a gas collection bottle 41. The bottom of the gas collection bottle 41 is fixedly connected to the top of the base 1. A gas guide tube 42 is fixedly passed through the top of the gas collection bottle 41. The circumferential surface of the gas guide tube 42 is fixedly connected to the inside of the gas outlet 26. A one-way valve 43 is provided on the circumferential surface of the gas guide tube 42. A scale line 44 is provided on the circumferential surface of the gas collection bottle 41. A processing port 45 is fixedly passed through the circumferential surface of the gas collection bottle 41. The one-way valve 43 can prevent gas backflow, and the scale line 44 facilitates accurate measurement of the collected gas volume.

[0030] As shown in the figure, the circumferential surface of the processing port 45 is fixedly penetrated by the absorption bottle 46. The bottom of the absorption bottle 46 is fixedly connected to the top of the base 1. The absorption liquid in the absorption bottle 46 is selected according to the properties of different gases, which can effectively absorb the toxic and harmful gases generated by the reaction, prevent them from being emitted into the air and causing pollution, and ensure the safety of the experimental environment.

[0031] A specific application of this embodiment is as follows: When a demonstration experiment of gas properties is required, the operator opens the feeding port 27 through the sealing plug 28 to add solid or liquid reactants into the reaction vessel 21. After adding, the sealing plug 28 is tightened to ensure the sealing of the reaction vessel 21. At the same time, the gas or air required for the reaction is introduced through the air inlet 25. At this time, the operator turns on the power switch 13 to power on the base 1, and then adjusts the temperature adjustment knob 294 to power on the heater 291, controlling the heating temperature of the annular electric heating wire 292 to meet the temperature requirements of different chemical reactions. The heat insulation sleeve 293 prevents the operator from being burned and reduces heat loss. After this, the operator presses the motor switch 2105 to start the micro motor 2101, and the output end of the micro motor 2101 rotates. The output end of 2101 rotates, driving the stirring paddle 2103 to rotate via the rotating shaft 2102, so that the reactants are fully mixed, the reaction rate is accelerated, and the reaction is more complete. During the reaction, students can clearly observe the experimental phenomena inside the reaction container 21 through the observation window 31. At the same time, pressing the light switch 34 turns on the lighting 32, providing sufficient light for the observation window 31, so that students can observe in the absence of light. The gas after the reaction in the reaction container 21 enters the gas guide tube 42 through the gas outlet 26. The gas passes through the one-way valve 43 inside the gas guide tube 42 and enters the gas collection bottle 41. At this time, students can observe the scale line 44 on the surface of the gas collection bottle 41 to accurately measure the volume of the collected gas. The operator adds absorbent liquid to the absorption bottle 46. The gas collection bottle 41 contains toxic and harmful gases, which are absorbed by the absorbent liquid.

Claims

1. A high school chemistry visualization reaction apparatus for demonstrating the properties of gases, characterized in that, It includes a base (1), a reaction unit (2), an observation unit (3), and a collection unit (4); The base (1) has an anti-slip pad (11) at the bottom, a fixing hole (12) at the top, and a power switch (13) on the side.

2. The high school chemistry visualization reaction device for demonstrating the properties of gases according to claim 1, characterized in that, The reaction unit (2) includes a reaction container (21), which is located on the top of the base (1). A mounting bracket (22) is fixedly connected to the bottom of the reaction container (21). A fixing screw (23) passes through the top of the mounting bracket (22). The circumferential surface of the fixing screw (23) is connected to the internal thread of the fixing hole (12). A sealing cover (24) is provided on the top of the reaction container (21). An air inlet (25), an air outlet (26), and a feeding port (27) are provided on the top of the sealing cover (24). A sealing plug (28) is connected to the internal thread of the feeding port (27).

3. A high school chemistry visualization reaction device for demonstrating the properties of gases according to claim 2, characterized in that, The reaction vessel (21) is provided with a heating component (29) on its circumferential surface. The heating component (29) includes a heater (291). The top of the heater (291) is provided with an annular electric heating wire (292). The circumferential surface of the annular electric heating wire (292) is provided with a heat insulation sleeve (293). The side of the base (1) is provided with a temperature adjustment knob (294). The bottom of the heater (291) and the temperature adjustment knob (294) are electrically connected.

4. A high school chemistry visualization reaction device for demonstrating the properties of gases according to claim 3, characterized in that, The reaction vessel (21) is equipped with a stirring assembly (210), which includes a micro motor (2101). The bottom of the micro motor (2101) is fixedly connected to the top of the sealing cover (24). The output end of the micro motor (2101) is fixedly connected to a rotating shaft (2102). The circumferential surface of the rotating shaft (2102) passes through and is rotatably connected to the top of the sealing cover (24). The circumferential surface of the rotating shaft (2102) is fixedly connected to a stirring paddle (2103). The top of the micro motor (2101) is electrically connected to a motor wire (2104). The side of the base (1) is equipped with a motor switch (2105). The other end of the motor wire (2104) is electrically connected to the motor switch (2105).

5. A high school chemistry visualization reaction device for demonstrating the properties of gases according to claim 4, characterized in that, The observation unit (3) includes an observation window (31), which is located on the circumferential surface of the reaction vessel (21). A lighting lamp (32) is provided on the top of the observation window (31), and a light wire (33) is electrically connected to the top of the lighting lamp (32). A light switch (34) is provided on the side of the base (1), and one end of the light wire (33) is electrically connected to the light switch (34).

6. A high school chemistry visualization reaction device for demonstrating the properties of gases according to claim 5, characterized in that, The collection unit (4) includes a gas collection bottle (41), the bottom of which is fixedly connected to the top of the base (1). A gas guide tube (42) is fixedly passed through the top of the gas collection bottle (41). The circumferential surface of the gas guide tube (42) is fixedly connected to the inside of the gas outlet (26). A one-way valve (43) is provided on the circumferential surface of the gas guide tube (42). A scale line (44) is provided on the circumferential surface of the gas collection bottle (41). A processing port (45) is fixedly passed through the circumferential surface of the gas collection bottle (41).

7. A high school chemistry visualization reaction device for demonstrating the properties of gases according to claim 6, characterized in that, The circumferential surface of the processing port (45) is fixedly penetrated by the absorption bottle (46), and the bottom of the absorption bottle (46) is fixedly connected to the top of the base (1).

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