Chemical experiment device component integrating distillation and backflow functions

Abstract

The utility model relates to the technical field of chemical experiments, and discloses a chemical experiment device component integrating distillation and backflow functions, which comprises a glass outer container, a glass inner container and a connecting guide pipe, the top of the glass outer container is fixedly connected with an outer container bottle opening, the left side of the glass outer container is fixedly connected with a distillate outlet pipe, and the left side of the glass outer container is fixedly connected with a liquid outlet pipe. A glass inner container is fixedly connected to the interior of the glass outer container, and a connecting guide pipe is connected to the bottom of the glass outer container. According to the chemical experiment device component integrating the distillation function and the backflow function, the experiment efficiency is remarkably improved, in addition, the distillate receiving trap is designed, the adhesion loss of products on the device wall in a traditional experiment device is effectively reduced, and therefore the experiment yield is improved, meanwhile, a steam flow buffering area is formed in the component through the glass inner container, and therefore the steam flow buffering effect is improved. Liquid can be prevented from bumping and rushing out of the container in the heating reflux operation process, experimental accidents such as scalding caused by liquid splashing are avoided, and the safety of experimental operation is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical experiment technical field, concretely is a chemical experiment device component that distillation and reflux function are integrated in one. BACKGROUND

[0002] In organic chemistry experiment, preparation experiment usually contains multiple basic operations, for example, heating distillation, condensation reflux, liquid-liquid extraction, decolorization, hot filtration, crystallization, suction filtration and drying etc., wherein, distillation and condensation reflux are common key steps, but the traditional device needs to be frequently built and disassembled, involves the assembly of multiple instruments such as distillation head, thermometer sleeve, straight condenser, ball condenser, liquid receiving tube and distillate receiving bottle, the operation is complex and time-consuming, in addition, the device needs to be repeatedly built during the experiment, which not only increases the intensity of experimental operation, but also easily makes students tired of mechanical operation, and it is difficult to concentrate on observing experimental phenomena or understanding the purpose and significance of operation steps.

[0003] Based on this, the utility model provides a chemical experiment device component that distillation and reflux function are integrated in one. UTILITY MODEL CONTENT

[0004] In view of the deficiency of prior art, the utility model provides a chemical experiment device component that distillation and reflux function are integrated in one, which can quickly realize distillation and reflux operation, reduce the repeated assembly of instruments and the repeated building of device, thereby significantly improving experimental efficiency, through simplifying operation process, students can concentrate more energy on observation of experimental phenomena and understanding of operation significance, thereby optimizing experimental teaching effect, improving experimental completion rate and teaching quality, and solving the problems raised in the background art.

[0005] The utility model provides following technical scheme: a chemical experiment device component that distillation and reflux function are integrated in one, including glass outer shell, glass inner shell and connecting pipe, the top of glass outer shell is fixedly connected with outer shell bottle mouth, the left side of glass outer shell is fixedly connected with distillate outlet pipe, the inside of glass outer shell is fixedly connected with glass inner shell, the bottom of glass outer shell is connected with connecting pipe, the connecting pipe includes port one and port two, port two is used for connecting glass outer shell bottom, and is 2-10mm higher than glass outer shell bottom, the high part forms distillate receiving trap with the bottom of glass outer shell, the bottom of distillate receiving trap is provided with reflux branch pipe.

[0006] Preferably, the glass inner shell includes condensing ball one, condensing ball two and inner shell bottle neck pipe, the inside of condensing ball one and condensing ball two is cavity, and is communicated with the inner shell bottle neck pipe respectively, the glass inner shell is fixed on the glass outer shell bottle body through the inner shell bottle neck pipe, so as to be embedded in the glass outer shell, and the inner shell bottle neck pipe is communicated with atmosphere.

[0007] Preferably, the reflux branch pipe is communicated with the connecting pipe, a plug valve is arranged on the reflux branch pipe, the first port is a standard port, and the first port is used for connecting a reaction bottle.

[0008] Preferably, the condensing ball one and the condensing ball two are respectively arranged above the distillate receiving trap.

[0009] Preferably, the condensing ball one and the condensing ball two are added with refrigerant medium through the inner container bottle neck pipe.

[0010] Preferably, the condensing ball one and the condensing ball two are internally hollow cavities, and air in the hollow cavities is used for heat exchange with the glass outer container.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The chemical experiment device component integrating distillation and reflux functions integrates the functions of the distillation head, the ball-shaped condensing pipe, the straight condensing pipe, the air condensing pipe, the liquid receiving pipe and the distillate receiving bottle, can simplify the building process of the experiment device, is suitable for experiments involving distillation and reflux operation, is rapidly assembled, is convenient to operate, the condensing function of the device component can be realized by air condensation or refrigerant condensation, avoids the complicated instrument assembly steps in the traditional experiment, significantly improves the experiment efficiency, in addition, the distillate receiving trap is designed, effectively reduces the adhesion loss of the product on the wall in the traditional experiment device, thereby improves the experiment yield, meanwhile, the glass inner container forms a steam flow buffering area in the component, can prevent liquid from violently boiling out of the container during the heating reflux operation, avoids the experimental accidents such as scalding caused by liquid splashing, and significantly improves the safety of the experiment operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model device.

[0014] In the figure: 1, glass outer container; 101, outer container bottle mouth; 102, distillate outlet pipe; 103, distillate receiving trap; 104, reflux branch pipe; 105, plug valve; 2, glass inner container; 201, condensing ball one; 202, condensing ball two; 203, inner container bottle neck pipe; 3, connecting pipe; 301, first port; 302, second port. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0016] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, more understandable, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0017] Organic chemistry experiment is a practical discipline for systematically studying the properties, preparation and separation technology of organic substances. In the organic chemistry experiment, the preparation experiment usually includes various basic operations, such as heating distillation, condensation reflux, liquid-liquid extraction, decolorization, hot filtration, crystallization, suction filtration and drying, etc. Among them, distillation and condensation reflux are common key steps.

[0018] Distillation is to separate the mixture by using the different boiling points of the components in the mixture, so that the low-boiling-point components are vaporized first, and then the vapor is introduced and cooled to condense into liquid, thereby separating the high-boiling-point components. For example, the boiling point of water and alcohol mixture is about 78.3℃, and the boiling point of water is 100℃. When the mixture is heated, alcohol vaporizes first to form alcohol vapor, and water remains in liquid state. The alcohol vapor is collected and cooled to obtain relatively pure alcohol, thereby realizing the separation of water and alcohol. Condensation reflux is to let the vapor cool and condense into liquid in the condenser, and then return to the reaction container. In many organic chemical reactions, the reactants usually have the characteristics of easy volatilization. In order to make the reaction proceed fully, while avoiding the loss of reactants due to volatilization, a condensation reflux device is used. For example, in the preparation of ethyl acetate experiment, the reactants ethanol and acetic acid and the generated ethyl acetate are easy to volatilize. Through the condensation reflux device, the vapor liquefies in the condenser when it is cooled, and the liquid flows back to the reaction container to continue to participate in the reaction, which can improve the conversion rate of the reactants and reduce the loss of substances.

[0019] Distillation includes

[0020] Distillation flask: used to hold the liquid mixture to be distilled, providing the space for evaporation. The size of the flask is selected according to the scale of the experiment and the amount of liquid to be distilled.

[0021] Thermometer: used to measure the temperature of the vapor during distillation to monitor the progress of distillation and determine the composition of the distillate.

[0022] Distillation head: connects the distillation flask and the condenser, allowing the vapor to enter the condenser smoothly.

[0023] Condenser tube: used to cool and condense vapor into liquid. Commonly used for distillation are straight condenser tube and air condenser tube. Straight condenser tube is composed of two layers of glass tubes, the inner layer is a straight glass tube, and the outer layer is a glass sleeve with water inlet and outlet at both ends. The inner layer heat is carried away by water circulation, with high cooling efficiency, suitable for distillation of liquids with boiling point below 140℃. Air condenser tube is composed of a single layer of glass tube. Vapor exchanges heat with air outside the tube, relying on natural air cooling to remove heat and condense into liquid. It is suitable for distillation of liquids with boiling point higher than 140℃, avoiding the risk of glass breakage caused by high temperature water cooling.

[0024] Liquid receiving tube: used to guide the condensed liquid into the receiving bottle. The liquid receiving tube usually has a bend structure to facilitate the smooth flow of liquid into the receiving bottle, while avoiding liquid splashing.

[0025] Receiving bottle: used to collect the distillate. Different specifications of conical flask, round bottom flask, etc. can be selected as receiving bottle according to needs.

[0026] Condensation reflux includes

[0027] Reaction flask: as a reaction container, it contains reactants and catalysts, etc. The type and size of the reaction flask are determined by the specific requirements of the reaction. Commonly used are round bottom flask, three neck flask, etc.

[0028] Spherical condenser tube: is the core component of the condensation reflux device. Due to its spherical structure, it increases the contact area between vapor and the inner wall of the condenser tube, allowing vapor to be fully cooled and condensed into liquid. Condensed water enters the lower port of the condenser tube and flows out of the upper port, opposite to the flow direction of the vapor, forming countercurrent cooling and improving cooling efficiency.

[0029] Thermometer (optional): if the reaction needs to control temperature, a thermometer can be installed on the reaction flask to monitor the reaction temperature in real time.

[0030] Stirrer (optional): for some reactions that require thorough mixing of reactants, a stirrer can be installed in the reaction flask to make the reaction more uniform and complete. The stirrer can be a magnetic stirrer or a mechanical stirrer.

[0031] Traditional devices for distillation and condensation reflux need to be frequently set up and disassembled, involving the assembly of multiple instruments, which is complex and time-consuming.

[0032] Please refer to Figure 1The utility model discloses a chemical experiment device component that integrates distillation and reflux function, including glass outer shell 1, glass inner shell 2 and connecting pipe 3, the top fixed connection of glass outer shell 1 has outer shell bottle mouth 101, the left side fixed connection of glass outer shell 1 has distillate outlet pipe 102, the inside fixed connection of glass outer shell 1 has glass inner shell 2, the bottom of glass outer shell 1 is connected with connecting pipe 3, and connecting pipe 3 includes port one 301 and port two 302, and port two 302 is used for connecting the bottom of glass outer shell 1 and is 2 ~ 10 millimeters higher than the bottom of glass outer shell 1, and the high part forms distillate receiving trap 103 with the bottom of glass outer shell 1, and glass inner shell 2 includes condensing ball one 201, condensing ball two 202 and inner shell bottle neck pipe 203, and the inside of condensing ball one 201 and condensing ball two 202 is cavity, and is communicated with inner shell bottle neck pipe 203 respectively, and glass inner shell 2 is fixed on bottle body through inner shell bottle neck pipe 203 to be embedded in glass outer shell 1, and inner shell bottle neck pipe 203 is communicated with atmosphere, and distillate receiving trap 103 bottom is provided with reflux branch pipe 104, and reflux branch pipe 104 is communicated with connecting pipe 3, and the plug valve 105 is set up on reflux branch pipe 104, and port one 301 is standard port, and port one 301 is used for connecting reaction bottle, and condensing ball one 201 and condensing ball two 202 are located above distillate receiving trap 103 respectively, and the inside of condensing ball one 201 and condensing ball two 202 is cavity, and the cavity can be communicated with air or refrigerant for heat exchange with glass outer shell 1 through inner shell bottle neck pipe 203.

[0033] The utility model discloses the action process description:

[0034] When the organic matter boiling point in reaction bottle is lower than 140 DEG C, the condensation of organic matter vapor needs to be condensed by refrigerant, and in the cavity of condensing ball one 201 and condensing ball two 202, the refrigerant is added through inner shell bottle neck pipe 203, when the organic matter boiling point in reaction bottle is higher than 140 DEG C, the condensation of organic matter vapor needs to be condensed by air, and in the cavity of condensing ball one 201 and condensing ball two 202, refrigerant need not be added, and the vapor in reaction bottle enters glass outer shell 1 through connecting pipe 3, and the vapor is condensed by air in glass outer shell 1 and the condensing medium in glass inner shell 2, to form condensed liquid, and the condensed liquid can flow along the inner wall of glass outer shell 1 into distillate receiving trap 103, and on the outside of glass inner shell 2, the condensed liquid flows along the outer wall of glass inner shell 2 to the bottom of condensing ball one 201 and condensing ball two 202, to drip into distillate receiving trap 103, and when the plug valve 105 is opened, the distillate in distillate receiving trap 103 can be refluxed to connecting pipe 3 through reflux branch pipe 104, to enter reaction bottle, to play the reflux role, and when the plug valve 105 is closed, the distillate in distillate receiving trap 103 can be taken out through distillate outlet pipe 102, to play the distillation role.

[0035] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A component of a chemical experimental apparatus integrating distillation and reflux functions, characterized in that, The device comprises a glass outer container (1), a glass inner container (2) and a connecting pipe (3), the top of the glass outer container (1) is fixedly connected with an outer container bottle mouth (101), the left side of the glass outer container (1) is fixedly connected with a distillate outlet pipe (102), the inside of the glass outer container (1) is fixedly connected with the glass inner container (2), the bottom of the glass outer container (1) is connected with the connecting pipe (3), the connecting pipe (3) comprises a port one (301) and a port two (302), the port two (302) is used for connecting the bottom of the glass outer container (1) and is 2-10 mm higher than the bottom of the glass outer container (1), the high part forms a distillate receiving trap (103) with the bottom of the glass outer container (1), and the bottom of the distillate receiving trap (103) is provided with a reflux branch pipe (104).

2. The chemical experiment device component integrating distillation and reflux functions according to claim 1, characterized in that: The glass inner container (2) comprises a condensing ball one (201), a condensing ball two (202) and an inner container bottle neck pipe (203), the inside of the condensing ball one (201) and the condensing ball two (202) is a cavity, and the cavity is in communication with the inner container bottle neck pipe (203), the glass inner container (2) is fixed on the bottle body of the glass outer container (1) through the inner container bottle neck pipe (203) so as to be embedded in the glass outer container (1), and the inner container bottle neck pipe (203) is in communication with the atmosphere.

3. The chemical experiment device component integrating distillation and reflux functions according to claim 1, characterized in that: The reflux branch pipe (104) is in communication with the connecting pipe (3), a plug valve (105) is arranged on the reflux branch pipe (104), the port one (301) is a standard port, and the port one (301) is used for connecting a reaction bottle.

4. The chemical experiment device component integrating distillation and reflux functions according to claim 2, characterized in that: The condensing ball one (201) and the condensing ball two (202) are located above the distillate receiving trap (103) respectively.

5. The chemical experiment device component integrating distillation and reflux functions according to claim 2, characterized in that: The condensing ball one (201) and the condensing ball two (202) are added with refrigerant medium through the inner container bottle neck pipe (203).

6. The chemical experiment device component integrating distillation and reflux functions according to claim 2, characterized in that: The inside of the condensing ball one (201) and the condensing ball two (202) is a cavity, and the air in the cavity is used for heat exchange with the glass outer container (1).

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