Multifunctional chemical experiment device

Abstract

The utility model discloses a multifunctional chemical experiment device, which belongs to the technical field of teaching aids and comprises a main body, the main body comprises a three-neck cylindrical flat-bottomed flask, a bottle cavity is arranged in the three-neck cylindrical flat-bottomed flask, and three groups of distributed open piles are arranged on the top surface of the three-neck cylindrical flat-bottomed flask. According to the property verification device, experiment operation and teaching processes are carried out through the bottle cavity in the three-neck cylindrical flat-bottomed flask, heating is not needed in the gas preparation process, the acid amount is controlled at any time, the pressure intensity generated by Cl2 can be automatically adjusted through the balloon communicated with the top surface of the three-neck cylindrical flat-bottomed flask, the safety coefficient is high, and the experiment efficiency is high. Redundant Cl2 in the experiment process can be automatically absorbed by soda lime in the balloon and can also be absorbed by injecting a sodium hydroxide solution through the glass charging valve, so that the operation is more convenient, the whole experiment is performed in a sealed environment, the mouth part is polished, the sealing performance is good, the environment is protected, the Cl2 can be effectively prevented from polluting the environment, and the environmental awareness of students is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to teaching appliance technical field, concretely is a kind of multifunctional chemical experiment device. BACKGROUND

[0002] Chlorine is a kind of single substance formed by chlorine element, chemical formula Cl2, yellow-green at normal temperature and pressure, with strong irritating smell of toxic gas, has asphyxiating, density is greater than air, can be dissolved in water and alkali solution, easily soluble in organic solvent, difficultly soluble in saturated salt water, easy to compress, can be liquefied into yellow-green oil liquid chlorine, and laboratory preparation of Cl2 and its property verification are one of basic experiments of high school chemistry experiment.

[0003] In People's Education Press (2019 edition) high school chemistry compulsory 1, laboratory preparation of Cl2 is only required to discuss, not experiment, however property verification requires that colored fresh flowers are placed into dry Cl2, this operation exists Cl2 leakage risk, and laboratory preparation of Cl2 and property verification are carried out separately, there is the following insufficient inevitably:

[0004] 1, reagent dosage is large, and instrument assembly is complex;

[0005] 2, in compulsory experiment 2-8 [1], bleaching property of chlorine water is verified, and oxidation, acidity and the like are not verified, which is not conducive to comprehensively understanding the properties of Cl2;

[0006] 3, Cl2 is not easy to store and use, and is easy to pollute the environment.

[0007] Based on the above problems, a multifunctional chemical experiment device is proposed. CONTENT OF THE UTILITY MODEL

[0008] The content part of the application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part. The content part of the application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0009] The utility model aims at providing a kind of multifunctional chemical experiment device, to solve the problems raised in the above background art.

[0010] To achieve the above object, the utility model provides the following technical scheme: A multifunctional chemical experiment device, including main part, the main part includes three mouth cylinder flat -bottom flask, the inside of three mouth cylinder flat -bottom flask is provided with bottle cavity, three mouth cylinder flat -bottom flask's top surface is provided with three groups distribution's open -ended pile, the top of open -ended pile is equipped with silica gel cover, the inner wall of silica gel cover is equipped with liquid seal funnel around, the top of liquid seal funnel is connected with double -way valve, the inside of liquid seal funnel is provided with funnel upper pipe, the bottom of funnel upper pipe is connected with funnel lower pipe, the periphery of funnel lower pipe is equipped with side hole test tube, the top of open -ended pile of another side of three mouth cylinder flat -bottom flask's top surface is equipped with second silica gel cover, the top of second silica gel cover is equipped with glass feeding valve, the bottom center of glass feeding valve is connected with valve lower pipe, the outer wall of valve lower pipe is bonded with finger -shaped test tube, the top central open -ended pile of three mouth cylinder flat -bottom flask is equipped with balloon.

[0011] Further, the funnel upper pipe and the funnel lower pipe are connected in the liquid seal funnel, and the funnel upper pipe is curved.

[0012] Further, the liquid seal funnel is connected with the double -way valve at the top, and the liquid seal funnel is fixed with the top of the open -ended pile through the silica gel cover.

[0013] Further, the funnel lower pipe is fixed with the side hole test tube, and the lower end of the funnel lower pipe is connected with the inside of the side hole test tube.

[0014] Further, the glass feeding valve is fixed with the other side open -ended pile through the second silica gel cover, and the bottom of the glass feeding valve is connected with the inside of the bottle cavity through the valve lower pipe.

[0015] Further, the finger -shaped test tube is arranged around the bottom of the valve lower pipe in six groups, and the finger -shaped test tube is fixed with the outer wall of the valve lower pipe.

[0016] Further, the open -ended pile is arranged in three groups along the top surface of the three mouth cylinder flat -bottom flask, and each group of open -ended pile is connected with the inside of the bottle cavity.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The property verification device carries out experimental operation and teaching process through the bottle cavity in the three mouth cylinder flat -bottom flask, the gas production process does not need heating, the acid amount is controlled at any time, the pressure of Cl2 generation can be automatically regulated through the balloon connected with the top surface of the three mouth cylinder flat -bottom flask, the safety factor is high, the excess Cl2 in the experimental process can be automatically absorbed by the soda lime in the balloon, or can be absorbed by the injection of sodium hydroxide solution through the glass feeding valve, the operation is more convenient, the whole experiment is carried out in a sealed environment, and the mouth is polished, so the sealing performance is good, green and environmental protection, can effectively prevent Cl2 from polluting the environment, and enhances the environmental protection consciousness of students.

[0019] This property verification device mainly consists of a three-necked cylindrical flat-bottomed flask, a liquid-sealed funnel connected by a top-opening post, and a glass feeding valve. Each component can be fixed by a silicone sleeve to maintain the structural stability and airtightness of the assembled device. The device is simple, adopts the idea of ​​multi-device integration and multi-purpose use, has strong overall integrity, does not require iron frame for fixation, and is easy to disassemble, clean and carry.

[0020] This property verification device incorporates the STEAM concept and features a visualized bottle cavity structure, which can enhance students' learning interest and make them realize the close relationship between chemistry and scientific development and technological innovation. This will subtly improve students' thinking ability, hands-on ability, and aesthetic ability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the dual-way valve of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the liquid-sealed funnel of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the glass feeding valve of this utility model.

[0025] In the diagram: 1. Main body; 101. Three-necked cylindrical flat-bottom flask; 102. Flask cavity; 103. Opening post; 104. Silicone sleeve; 105. Liquid-sealed funnel; 106. Two-way valve; 107. Upper tube of funnel; 108. Lower tube of funnel; 109. Test tube with side opening; 110. Second silicone sleeve; 111. Glass feeding valve; 112. Lower tube of valve; 113. Finger-shaped test tube; 114. Balloon. Detailed Implementation

[0026] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0027] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0028] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0029] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0030] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] This utility model provides, for example Figures 1-4 The illustrated multifunctional chemical experimental apparatus includes a main body 1, which comprises a three-necked cylindrical flat-bottom flask 101. The flask 101 has an internal cavity 102. Three sets of distributed opening posts 103 are formed on the top surface of the flask 101. A silicone sleeve 104 is fitted over the top of each opening post 103. A liquid-sealed funnel 105 is fitted around the inner wall of the silicone sleeve 104. A two-way valve 106 is connected to the top of the liquid-sealed funnel 105. An upper funnel tube 107 is installed inside the liquid-sealed funnel 105. The bottom of tube 107 is connected to a funnel lower tube 108. The funnel lower tube 108 is surrounded by test tubes 109 with side openings. The top of the opening post 103 on the other side of the top surface of the three-necked cylindrical flat-bottom flask 101 is fitted with a second silicone sleeve 110. The top of the second silicone sleeve 110 is fitted with a glass feeding valve 111. The bottom center of the glass feeding valve 111 is connected to a valve lower tube 112. A finger-shaped test tube 113 is attached to the outer wall of the valve lower tube 112. A balloon 114 is fitted on the opening post 103 in the middle of the top surface of the three-necked cylindrical flat-bottom flask 101.

[0032] To facilitate the use and handling of the entire device in teaching experiments, such as Figure 1 As shown, this property verification device mainly consists of a three-necked cylindrical flat-bottomed flask 101, a liquid-sealed funnel 105 connected to a top-opening post 103, and a glass feeding valve 111. Each component can be fixed by a silicone sleeve 104 to maintain the structural stability and airtightness of the assembled device. The device is simple, adopts the concept of multi-device integration and multi-purpose design, has strong overall integrity, does not require iron frame for fixation, and is easy to disassemble, clean, and carry.

[0033] To ensure the safety and convenience of experimental operations throughout the overall teaching process, such as Figures 1-3As shown, this property verification device can be used for experimental operations and teaching processes through the cavity 102 inside the three-necked cylindrical flat-bottom flask 101. The gas generation process does not require heating, and the acid quantity can be controlled at any time. The pressure generated by Cl2 can be automatically adjusted by the balloon 114 connected to the top surface of the three-necked cylindrical flat-bottom flask 101, ensuring a high safety factor. Excess Cl2 during the experiment can be automatically absorbed by the soda lime in the balloon, or absorbed by injecting sodium hydroxide solution through the glass feeding valve 111. Cl2 can also be stored for later use. Property verification can be performed in multiple sets of finger-shaped test tubes 113 at the bottom of the glass feeding valve 111, or exported through the glass feeding valve 111 switch, making operation more convenient. The entire operation takes place within the cavity 102, ensuring high safety. The entire experiment is conducted in a sealed environment, with the mouth polished for good sealing, making it environmentally friendly and effectively preventing Cl2 pollution, thus enhancing students' environmental awareness.

[0034] Finally, to clearly observe the experimental process, such as Figures 1-4 As shown, this property verification device incorporates the STEAM concept and, together with the visualized bottle cavity 102 structure, can enhance students' learning interest and make them realize that chemistry is closely related to scientific development and technological innovation, thereby subtly improving students' thinking ability, hands-on ability, and aesthetic ability.

[0035] In summary, when using this property verification device, firstly, add 10 ml of concentrated H2SO4 to the 20 ml side-perforated test tube 109 at the lower end of the liquid-sealed funnel 105, and add approximately 1 g of KMnO4 solid to the liquid-sealed funnel 105. Simultaneously, add a few drops of FeSO4 and KSCN mixed solution, starch-KI solution, and red fresh flowers to the finger-shaped test tubes 113 distributed at the lower end of the glass feeding valve 111, respectively. Add a few dried petals to the three-necked cylindrical flat-bottomed flask 101. Draw 5 ml of concentrated HCl into a 20 ml syringe and slowly inject it through the double-port valve 106 at the upper end of the liquid-sealed funnel 105. When the three-necked cylindrical flat-bottomed flask... When the balloon 114 in the flat-bottomed flask 101 slightly inflates, the injection of concentrated hydrochloric acid can be stopped. After about 2 minutes, it is observed that freshly picked red flowers fade, dried petals do not fade, the starch-KI solution changes from colorless to blue, the FeSO4 and KSCN mixed solution turns blood red, the AgNO3 solution becomes turbid, and the purple litmus solution first turns red and then fades. Then, use a 20ml syringe to draw 5ml of saturated saline solution and slowly draw Cl2 in through the glass feed valve 111. During the operation, ensure that Cl2 passes through the saturated saline solution to facilitate the removal of HCl gas impurities. After drawing in about 5ml of Cl2, prepare in advance... Two sets of verification test tubes were prepared. A syringe was inserted into the Luer double-port valve connected to the test tube, and the valve was opened. Cl2 was slowly pushed into the test tube containing litmus solution. The same procedure was repeated for other solutions, but the injection should not be too rapid to prevent saturated saline solution from being pushed into the AgNO3 solution. Ideally, less than 5 ml of Cl2 should be injected at a time; otherwise, residual Cl2 would pollute the air. Cl2 was slowly injected into the verification test tubes containing AgNO3 solution and purple litmus solution, respectively. The observed phenomena were that the AgNO3 solution became cloudy and the litmus solution initially turned red before fading, proving that chlorine water contains Cl- and has oxidizing properties. To test the acidity and bleaching properties, after the experiment, NaOH solution was injected into the glass feeding valve 111 and the liquid-sealed funnel 105 using a syringe to absorb the residual Cl2 and prevent air pollution. It can be concluded that the reaction of concentrated HCl with KMnO4 to produce Cl2 does not require heating. When verifying that dry Cl2 does not have bleaching properties while moist Cl2 does, it is not necessary to remove HCl. Furthermore, when verifying that chlorine water contains Cl-, has oxidizing, acidic, and bleaching properties, it is not necessary to dry the Cl2. Therefore, after passing it through saturated saline solution, the experiment can proceed. All the above experiments were conducted in a closed system, which effectively prevents environmental pollution.

[0036] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A multifunctional chemical experimental apparatus, comprising a main body (1), characterized in that, The main body (1) includes a three-necked cylindrical flat-bottomed flask (101). The three-necked cylindrical flat-bottomed flask (101) has an internal cavity (102). The top surface of the three-necked cylindrical flat-bottomed flask (101) has three sets of distributed opening posts (103). A silicone sleeve (104) is fitted over the top of each opening post (103). A liquid-sealed funnel (105) is fitted around the inner wall of the silicone sleeve (104). A two-way valve (106) is connected to the top of the liquid-sealed funnel (105). An upper funnel tube (107) is installed inside the liquid-sealed funnel (105). The bottom of the upper funnel tube (107) is connected to… The three-necked cylindrical flat-bottomed flask (101) has a funnel-shaped lower tube (108) around which test tubes with side openings (109) are fitted. The top of the opening post (103) on the other side of the top surface of the three-necked cylindrical flat-bottomed flask (101) is fitted with a second silicone sleeve (110). The top of the second silicone sleeve (110) is fitted with a glass feeding valve (111). The bottom center of the glass feeding valve (111) is connected to a valve lower tube (112). The outer wall of the valve lower tube (112) is adhered with a finger-shaped test tube (113). The opening post (103) in the middle of the top surface of the three-necked cylindrical flat-bottomed flask (101) is fitted with a balloon (114).

2. The multifunctional chemical experimental apparatus according to claim 1, characterized in that, The upper tube (107) inside the liquid-sealed funnel (105) is connected to the lower tube (108), and the upper tube (107) is curved.

3. The multifunctional chemical experimental apparatus according to claim 1, characterized in that, The top of the liquid-sealed funnel (105) is connected to the two-way valve (106), and the liquid-sealed funnel (105) is fixed to the top of the open pile (103) by a silicone sleeve (104).

4. The multifunctional chemical experimental apparatus according to claim 1, characterized in that, The funnel lower tube (108) is sleeved and fixed to the side-opening test tube (109), and the lower end of the funnel lower tube (108) is connected to the inside of the side-opening test tube (109).

5. A multifunctional chemical experimental apparatus according to claim 1, characterized in that, The glass feeding valve (111) is fixed to the opening post (103) on the other side by a second silicone sleeve (110), and the bottom end of the glass feeding valve (111) is connected to the inside of the bottle cavity (102) through the valve lower tube (112).

6. The multifunctional chemical experimental apparatus according to claim 1, characterized in that, The finger-shaped test tubes (113) are arranged in six groups around the bottom of the lower valve tube (112), and the finger-shaped test tubes (113) are bonded and fixed to the outer wall of the lower valve tube (112).

7. A multifunctional chemical experimental apparatus according to claim 1, characterized in that, The opening stakes (103) are provided in three sets along the top surface of the three-necked cylindrical flat-bottomed flask (101), and each set of opening stakes (103) is connected to the inside of the flask cavity (102).

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