Rectification water separation device

Abstract

The utility model discloses a rectifying water separating device relates to chemical experiment equipment technical field, and rectifying water separating device includes heating bottle, condensing subassembly and reflux subassembly, and condensing subassembly includes collection pipe and condenser pipe, and heating bottle is connected with collection pipe, and condenser pipe is located in collection pipe, and reflux subassembly includes first reflux pipe and second reflux pipe, and the both ends of first reflux pipe axiality are equipped with first liquid inlet and first liquid outlet respectively, and the both ends of second reflux pipe axiality are equipped with second liquid inlet and second liquid outlet respectively, and first liquid inlet and second liquid inlet all are connected with collection pipe, and second liquid inlet is located first liquid inlet's top, and first liquid outlet and second liquid outlet all are connected with heating bottle, and first reflux pipe and second reflux pipe are used to deliver the liquid of different liquid level height in collection pipe and return to heating bottle.

Description

Technical Field

[0001] This utility model relates to the field of chemical experimental equipment technology, and in particular to a distillation and water separation device. Background Technology

[0002] In azeotropic distillation, regeneration of aqueous organic waste liquid, and reactions that generate water and require water removal, entrainers are often added. These entrainers react with water to form a lower-boiling azeotrope, which is then separated in a water separator. The organic phase is refluxed, and the aqueous phase is collected. Traditional distillation water separators are only suitable for entrainers with a density less than water. In this case, the water is located in the lower part of the water separator branch; opening the lower stopcock separates the water. However, they are not suitable for entrainers with a density greater than water, resulting in reduced water separation efficiency. Utility Model Content

[0003] The main purpose of this invention is to provide a distillation water separation device, which aims to improve the water separation efficiency of the distillation water separation device.

[0004] To achieve the above objectives, the present invention proposes a distillation and water separation device, comprising a heating flask, a condensation assembly, and a reflux assembly. The condensation assembly includes a collection tube and a condenser tube, the heating flask being connected to the collection tube, and the condenser tube being disposed within the collection tube. The reflux assembly includes a first reflux tube and a second reflux tube. The first reflux tube has a first inlet and a first outlet at its two axial ends, and the second reflux tube has a second inlet and a second outlet at its two axial ends. Both the first and second inlets are connected to the collection tube, with the second inlet located above the first inlet. Both the first and second outlets are connected to the heating flask. The first and second reflux tubes are used to transport liquids at different liquid levels in the collection tube back to the heating flask.

[0005] In one embodiment, the distillation and water separation device further includes a first valve, a second valve, and a third valve. The first valve is connected to the first reflux pipe to control the opening and closing of the first reflux pipe. The second valve is connected to the second reflux pipe to control the opening and closing of the second reflux pipe. The third valve is connected to the bottom end of the collection pipe, and the height of the third valve is lower than that of the first liquid inlet to control the discharge of liquid in the collection pipe.

[0006] In one embodiment, the distillation and water separation device further includes a connecting pipe that connects the heating flask and the collecting pipe, with the end of the connecting pipe away from the heating flask facing the condenser.

[0007] In one embodiment, the reflux assembly further includes a spherical tube, one end of which is connected to the heating bottle in the axial direction, and the other end of which is connected to the first liquid outlet and the second liquid outlet.

[0008] In one embodiment, the reflux assembly further includes a three-way tube, the three ends of which are respectively connected to the first liquid outlet, the second liquid outlet, and the spherical tube, and the end of the spherical tube away from the three-way tube is connected to the heating bottle.

[0009] In one embodiment, the spherical tube includes a conical segment, a spherical segment, and a connecting segment arranged sequentially. The end of the connecting segment away from the spherical segment is connected to the tee pipe, and the bottom end of the conical segment is connected to the heating bottle.

[0010] In one embodiment, the tee is a silicone flexible tube.

[0011] In one embodiment, the condensation assembly further includes a piston, an inlet pipe, and an outlet pipe. The piston is connected to the top of the collecting pipe, and the condensing pipe is connected to the piston and extends into the collecting pipe. The inlet pipe and the outlet pipe are both connected to the condensing pipe for inputting and outputting cooling water, respectively.

[0012] In one embodiment, a flow-guiding end is formed at the bottom of the condenser tube, the cross-sectional area of ​​the flow-guiding end gradually decreases along the direction close to the second return tube, and a flow-guiding surface is formed on the direction facing the second return tube of the flow-guiding end, the flow-guiding surface being inclined.

[0013] In one embodiment, the second return pipe includes a return section and a weir section. The weir section extends into the collection pipe. The end of the weir section away from the return section is funnel-shaped and has its opening facing upward. The bottom end of the flow-out end is offset from the opening of the weir section.

[0014] This invention provides a distillation and water separation device suitable for organic synthesis reactions, solvent purification, and oil-water separation. Through the synergistic effect of heating, condensation, and reflux, it achieves the removal of water or the separation of different components, ensuring reaction efficiency or purification purity. The distillation and water separation device consists of a heating flask, a condensation assembly, and a reflux assembly. The heating flask is made of high-temperature resistant glass, possessing good thermal stability and sealing properties. An internal cavity is formed to accommodate the mixture to be separated. The mixture can be heated using heating equipment such as an alcohol lamp or electric heating mantle, causing the components in the mixture to evaporate into vapor. The collecting tube of the condensation assembly is a cylindrical tubular structure, made of the same material as the heating flask, and connected to the top of the heating flask via a pipe to collect the vapor generated by heating and evaporation. A condenser tube is nested inside the collecting tube to ensure that the vapor can fully contact the condenser tube wall. The first and second reflux tubes of the reflux assembly are both made of corrosion-resistant glass or plastic tubing, forming a continuous flow channel inside. The first reflux pipe has a first inlet and a first outlet at its two axial ends, and the second reflux pipe has a second inlet and a second outlet at its two axial ends. Both the first and second inlets are connected to the side wall of the collecting pipe via interfaces, with the second inlet positioned higher than the first inlet. Both the first and second outlets are connected to the side wall of the heating flask via pipes. When the mixture in the heating flask is heated, the vapor enters the collecting pipe through the pipe and comes into contact with the condenser inside the collecting pipe. Cooling water is circulated through the condenser to condense the vapor into liquid. Due to the density differences of the different components, the condensed liquid forms layers in the collecting pipe, with the denser components settling at the bottom and the less dense components at the top. The liquid at the bottom layer enters the first reflux pipe through the first inlet, and the liquid at the top layer enters the second reflux pipe through the second inlet. Finally, both layers flow back into the heating flask through their respective outlets, achieving the cyclical participation of different components in the reaction or further separation. This structural design achieves precise separation of different components through stratified reflux, avoiding the waste of useful components. At the same time, the efficient condensation of the condenser ensures rapid vapor liquefaction, improving separation efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the distillation and water separation device provided by this utility model.

[0017] Explanation of icon numbers: 100. Distillation and water separation device; 1. Heating flask; 2. Condensation assembly; 21. Collection pipe; 22. Condensation tube; 221. Inlet end; 23. Piston; 24. Inlet pipe; 25. Outlet pipe; 3. Reflux assembly; 31. First reflux pipe; 32. Second reflux pipe; 321. Reflux section; 322. Weir section; 33. Spherical tube; 331. Conical section; 332. Spherical section; 333. Connecting section; 34. T-junction; 41. First valve; 42. Second valve; 43. Third valve; 5. Connecting pipe.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] In azeotropic distillation, regeneration of aqueous organic waste liquid, and reactions that generate water and require water removal, entrainers are often added. These entrainers react with water to form a lower-boiling azeotrope, which is then separated in a water separator. The organic phase is refluxed, and the aqueous phase is collected. Traditional distillation water separators are only suitable for entrainers with a density less than water. In this case, the water is located in the lower part of the water separator branch; opening the lower stopcock separates the water. However, they are not suitable for entrainers with a density greater than water, resulting in reduced water separation efficiency.

[0023] To solve the above problems, please refer to... Figure 1 This utility model proposes a distillation and water separation device 100, including a heating flask 1, a condensing assembly 2, and a reflux assembly 3. The condensing assembly 2 includes a collecting pipe 21 and a condensing pipe 22. The heating flask 1 is connected to the collecting pipe 21, and the condensing pipe 22 is disposed in the collecting pipe 21. The reflux assembly 3 includes a first reflux pipe 31 and a second reflux pipe 32. The first reflux pipe 31 has a first liquid inlet and a first liquid outlet at its two axial ends, and the second reflux pipe 32 has a second liquid inlet and a second liquid outlet at its two axial ends. The first liquid inlet and the second liquid inlet are both connected to the collecting pipe 21, and the second liquid inlet is located above the first liquid inlet. The first liquid outlet and the second liquid outlet are both connected to the heating flask 1. The first reflux pipe 31 and the second reflux pipe 32 are used to transport liquids of different liquid levels in the collecting pipe 21 back to the heating flask 1.

[0024] This utility model proposes a distillation and water separation device 100, suitable for organic synthesis reactions, solvent purification, oil-water separation, and other scenarios. Through the synergistic effect of heating, condensation, and reflux, it achieves the removal of water or the separation of different components, ensuring reaction efficiency or purification purity. The distillation and water separation device 100 consists of a heating flask 1, a condensation assembly 2, and a reflux assembly 3. The heating flask 1 is made of high-temperature resistant glass, possessing good thermal stability and sealing performance. An internal cavity is formed to accommodate the mixture to be separated. The mixture can be heated using heating equipment such as an alcohol lamp or electric heating mantle, causing the components in the mixture to evaporate into steam. The collecting tube 21 of the condensation assembly 2 is a cylindrical tubular structure, made of the same material as the heating flask 1, and is connected to the top of the heating flask 1 via a pipe to collect the steam generated by heating and evaporation. A condenser tube 22 is nested inside the collecting tube 21, ensuring that the steam can fully contact the tube wall of the condenser tube 22. The first reflux tube 31 and the second reflux tube 32 of the reflux assembly 3 are both made of corrosion-resistant glass or plastic tubing, forming a continuous flow channel inside. The first reflux pipe 31 has a first inlet and a first outlet at its two axial ends, and the second reflux pipe 32 has a second inlet and a second outlet at its two axial ends, respectively. Both the first and second inlets are connected to the side wall of the collecting pipe 21 through interfaces, and the second inlet is installed higher than the first inlet. Both the first and second outlets are connected to the side wall of the heating bottle 1 through pipes. When the mixture in the heating bottle 1 is heated, the vapor enters the collecting pipe 21 through the pipe and comes into contact with the condenser 22 inside the collecting pipe 21. Cooling water is introduced into the condenser 22 to condense the vapor into liquid. Due to the density difference of different components, the condensed liquid forms a stratification in the collecting pipe 21. The denser component settles at the bottom of the collecting pipe 21, and the less dense component is located in the upper layer. The liquid in the lower layer enters the first reflux pipe 31 through the first inlet, and the liquid in the upper layer enters the second reflux pipe 32 through the second inlet. Finally, both flow back into the heating bottle 1 through their respective outlets, realizing the recycling of different components to participate in the reaction or further separation. This structural design achieves precise separation of different components through stratified reflux, avoiding waste of useful components. At the same time, the efficient condensation of condenser component 2 ensures rapid vapor liquefaction, improving separation efficiency.

[0025] Furthermore, in one embodiment, the distillation and water separation device 100 further includes a first valve 41, a second valve 42, and a third valve 43. The first valve 41 is connected to the first reflux pipe 31 to control the opening and closing of the first reflux pipe 31. The second valve 42 is connected to the second reflux pipe 32 to control the opening and closing of the second reflux pipe 32. The third valve 43 is connected to the bottom end of the collection pipe 21, and the height of the third valve 43 is lower than that of the first liquid inlet to control the discharge of liquid in the collection pipe 21.

[0026] The distillation and water separation device 100 also includes a first valve 41, a second valve 42, and a third valve 43. All three valves are shut-off valves or ball valves, made of corrosion-resistant plastic or metal, providing excellent sealing and precise control of the pipeline's opening and closing. The first valve 41 is connected to the middle of the first reflux pipe 31, controlling the flow and closing of liquid within it. The second valve 42 is connected to the middle of the second reflux pipe 32, controlling its opening and closing. The third valve 43 is connected to the bottom of the collection pipe 21, installed below the first inlet, ensuring complete drainage of liquid at the bottom of the collection pipe 21. When different components need to be separated, the reflux of a single component or a mixture can be achieved by controlling the opening and closing states of the first valve 41 and the second valve 42; for example, only the first valve 41 can be opened to allow the lower component to reflux, while the second valve 42 is closed to retain the upper component, or vice versa. After separation, opening the third valve 43 completely drains and collects the remaining liquid in the collection pipe 21 for subsequent processing or recycling. The third valve 43 facilitates cleaning of the collection tube 21 after the experiment, preventing residual liquid from affecting future use. Through precise valve control, the device can flexibly adapt to different separation needs, improving operational convenience and separation accuracy. Simultaneously, the valve's sealing performance ensures no leakage during operation, guaranteeing the safety of experiments or production.

[0027] In one embodiment, the distillation and water separation device 100 further includes a connecting pipe 5, which connects the heating bottle 1 and the collecting pipe 21, with the end of the connecting pipe 5 away from the heating bottle 1 facing the condenser 22.

[0028] The distillation and water separation device 100 also includes a connecting pipe 5, which is also made of high-temperature resistant glass. One end of the connecting pipe 5 is sealed to the mouth of the heating flask 1, and the other end is connected to the collecting pipe 21. In this embodiment, the connecting pipe 5 and the collecting pipe 21 are an integral structure, which ensures the airtightness of the connection and prevents steam leakage from the pipe. In other embodiments, the two can also be separate and connected by a sealing element, depending on the actual needs. The end of the connecting pipe 5 away from the heating flask 1 faces the condenser 22, ensuring that the steam can diffuse evenly to the surface of the condenser 22. When the mixture in the heating flask 1 evaporates and generates steam, the steam is directly guided to the condenser 22 through the connecting pipe 5, avoiding disorderly diffusion of steam in the collecting pipe 21 and resulting in insufficient condensation; the steam can quickly contact the wall of the condenser 22 and be cooled and liquefied, reducing steam escape and improving condensation efficiency. The sealing design of the connecting pipe 5 prevents steam leakage and ensures the airtightness of the device. At the same time, the structural stability of the rigid pipe ensures that it will not deform due to temperature changes during the heating process, maintains the smoothness of steam transmission, and ensures the separation effect of the distillation and water separation device 100.

[0029] In one embodiment, the reflux assembly 3 further includes a spherical tube 33, one end of which is connected to the heating bottle 1 in the axial direction, and the other end is connected to the first liquid outlet and the second liquid outlet.

[0030] The reflux assembly 3 also includes a spherical tube 33, made of high-temperature resistant glass with an internal spherical cavity. One axial end of the spherical tube 33 is connected to the top of the heating flask 1 via a pipe, while the other end is connected to both the first and second liquid outlets via an interface. This allows the liquids in the first reflux tube 31 and the second reflux tube 32 to converge into the spherical tube 33 before flowing back into the heating flask 1. The spherical cavity design of the spherical tube 33 slows down the liquid flow rate, preventing the refluxed liquid from impacting the mixture in the heating flask 1 due to excessive flow velocity, thus avoiding splashing or violent reactions. Simultaneously, the spherical cavity can accommodate some incompletely condensed vapor, allowing it to further condense into liquid within the cavity, reducing incomplete separation caused by direct vapor reflux. The spherical tube 33 ensures stable convergence of the liquids in the two reflux tubes, preventing the re-mixing of different liquid components during reflux, ensuring effective separation, and providing a buffer to protect the reaction system within the heating flask 1, thus improving the stability of experiments or production.

[0031] Specifically, the spherical tube 33 includes a conical section 331, a spherical section 332 and a connecting section 333 arranged in sequence. The end of the connecting section 333 away from the spherical section 332 is connected to a three-way pipe 34, and the bottom end of the conical section 331 is connected to the heating bottle 1.

[0032] The spherical tube 33 comprises a conical section 331, a spherical section 332, and a connecting section 333 arranged sequentially. All three are integrally molded from high-temperature resistant glass. The end of the connecting section 333 furthest from the spherical section 332 is connected to a tee pipe 34 via a sealed interface, ensuring smooth liquid flow into the spherical tube 33. The spherical section 332 serves as a core buffer zone, forming a large spherical cavity to slow the liquid flow rate and reduce secondary condensation vapor. The diameter of the conical section 331 gradually decreases away from the spherical section 332, and its bottom end is connected to the heating bottle 1 via a pipe. In this embodiment, the spherical tube 33 partially extends into the connecting pipe 5, allowing the heating bottle 1 to connect to both the connecting pipe 5 and the spherical tube 33 with only one interface. In other embodiments, the heating bottle 1 can also have two interfaces connecting to both the connecting pipe 5 and the spherical tube 33 respectively, achieving the same reflux effect. The choice can be made based on actual needs. By adjusting the orifice size at the bottom outlet of the conical section 331, when the amount of reflux liquid accumulated in the spherical tube 33 is small, the reflux liquid blocks the opening under tension, preventing it from flowing into the heating bottle 1 below. This also prevents steam from entering the collecting tube 21 from the spherical tube 33. When a large amount of reflux liquid accumulates in the spherical tube 33, the reflux liquid falls into the heating bottle 1 under its own gravity, achieving reflux. Furthermore, after the liquid flows into the connecting section 333 of the spherical tube 33, it flows into the spherical section 332. The large volume of the spherical section 332 reduces the liquid flow rate, preventing it from impacting the mixture in the heating bottle 1. Incompletely condensed steam remains in the spherical section 332 and further condenses, improving liquefaction efficiency. The contraction structure of the conical section 331 allows the liquid to flow into the heating bottle 1 in a concentrated manner, avoiding waste caused by liquid residue along the tube wall. This segmented structure enables the spherical tube 33 to simultaneously perform functions of flow convergence, buffering, secondary condensation, and flow guidance, further improving the separation efficiency and operational stability of the distillation and water separation device 100.

[0033] In one embodiment, the reflux assembly 3 further includes a three-way pipe 34, the three ends of which are respectively connected to the first liquid outlet, the second liquid outlet and the spherical tube 33, and the end of the spherical tube 33 away from the three-way pipe 34 is connected to the heating bottle 1.

[0034] The reflux assembly 3 also includes a T-shaped pipe 34 with three interfaces. These interfaces are connected to the first liquid outlet, the second liquid outlet, and one end of the spherical tube 33 via sealed interfaces. The end of the spherical tube 33 furthest from the T-shaped pipe 34 is connected to the heating bottle 1 via a sealed pipe. Liquids in the first reflux pipe 31 and the second reflux pipe 32 enter the two interfaces of the T-shaped pipe 34 through their respective outlets. After converging within the T-shaped pipe 34, the liquid flows into the spherical tube 33 through the third interface, and then into the heating bottle 1. The T-shaped structure of the T-shaped pipe 34 enables precise convergence of the two reflux pipes, avoiding complex installation problems caused by intersecting pipes. Simultaneously, the sealed interfaces ensure no liquid leakage, preventing the escape of volatile components and thus preventing pollution or waste.

[0035] Specifically, the three-way pipe 34 is a silicone flexible hose. Silicone material has excellent flexibility, corrosion resistance, and high-temperature resistance, adapting to installation requirements at different angles and facilitating pipe routing adjustments. The three ends of the silicone flexible hose are fixedly connected to the first reflux pipe 31, the second reflux pipe 32, and the connecting section 333 of the ball-shaped pipe 33 using clamps or cable ties, ensuring sealing performance and preventing liquid leakage. Furthermore, using a silicone flexible hose connection avoids pipe rupture caused by uneven stress due to temperature differences between the steam riser pipe and the condensate reflux pipe, ensuring the safety and durability of the distillation and water separation device 100. The combination of the three-way pipe 34 and the ball-shaped pipe 33 makes the reflux liquid transmission path smoother. The liquid after convergence is buffered by the ball-shaped pipe 33 before entering the heating flask 1, further improving the stability of the reflux process and ensuring that different components are recycled as expected, adapting to complex separation or reaction requirements. The flexibility of silicone hoses makes the assembly of the distillation and water separation unit 100 more flexible, allowing for adjustments to pipe positions based on the spatial layout of the laboratory or production site, avoiding installation limitations caused by rigid pipe connections. Simultaneously, the elasticity of the silicone hoses absorbs the impact force during liquid flow, reducing pipe vibration, protecting interface areas, and extending the unit's service life. The corrosion resistance of silicone ensures its compatibility with various organic solvents or chemical reagents, preventing aging or damage upon contact with corrosive liquids, thus guaranteeing long-term reliable operation of the unit.

[0036] In another embodiment, the condensation assembly 2 further includes a piston 23, an inlet pipe 24, and an outlet pipe 25. The piston 23 is connected to the top of the collection pipe 21, and the condensation pipe 22 is connected to the piston 23 and extends into the collection pipe 21. The inlet pipe 24 and the outlet pipe 25 are both connected to the condensation pipe 22 to input and output cooling water respectively.

[0037] The condenser assembly 2 also includes a piston 23, an inlet pipe 24, and an outlet pipe 25. The piston 23 is a cylindrical sealing plug made of corrosion-resistant rubber or plastic, and is connected to the top of the collecting pipe 21 via threads or a tight fit to seal the top of the collecting pipe 21 and prevent steam escape. The top of the condenser pipe 22 passes through the piston 23 and is fixedly connected to it. The main body of the condenser pipe 22 extends vertically into the collecting pipe 21, ensuring full contact with the steam inside the collecting pipe 21. The inlet pipe 24 and the outlet pipe 25 are both rigid plastic or metal pipes, connected to the bottom and top of the condenser pipe 22 respectively via interfaces. The inlet pipe 24 is used to connect external cooling water, and the outlet pipe 25 is used to discharge the warm water after absorbing heat. When the device is running, cooling water flows from the inlet pipe 24 into the condenser pipe 22, flows along the flow channel of the condenser pipe 22, absorbs heat from the steam in the collecting pipe 21, and is discharged from the outlet pipe 25, forming a continuous cooling cycle. The sealing design of piston 23 ensures the airtightness of collection pipe 21, avoiding raw material waste or safety hazards caused by steam leakage; the vertical distribution of water inlet pipe 24 and water outlet pipe 25 allows cooling water to fill condenser pipe 22, ensuring uniform temperature of condenser pipe 22 wall, and rapid condensation of steam after contact with pipe wall, improving condensation efficiency; continuous cooling cycle ensures the stability of condensation effect, enabling distillation and water separation device 100 to operate continuously for a long time.

[0038] In one embodiment, a flow-guiding end 221 is formed at the bottom of the condenser tube 22. The cross-sectional area of ​​the flow-guiding end 221 gradually decreases along the direction close to the second return tube 32. A flow-guiding surface is formed on the direction of the flow-guiding end 221 facing the second return tube 32. The flow-guiding surface is set at an angle.

[0039] A flow guide end 221 is formed at the bottom of the condenser tube 22. The cross-sectional area of ​​the flow guide end 221 gradually decreases along the direction close to the second return pipe 32, forming a conical structure. The flow guide end 221 is machined to form a flow guide surface facing the second return pipe 32, and the flow guide surface is set at an angle with the inclination direction facing the second liquid inlet. When the vapor condenses into liquid on the tube wall of the condenser tube 22, the liquid flows downward along the tube wall and collects at the flow guide end 221 at the bottom of the condenser tube 22. The conical structure of the flow guide end 221 concentrates the liquid flow, and the angled flow guide surface guides the liquid to flow towards the second liquid inlet, ensuring that the upper layer of liquid after condensation can accurately flow into the collection pipe 21 for collection. The design of the flow guide end 221 avoids the mixing of different components caused by the disordered flow of condensed liquid in the collection pipe 21, improves the accuracy of stratified reflux, and at the same time, the conical structure reduces liquid residue, allowing the condensed liquid to be fully refluxed or separated, further ensuring the separation effect.

[0040] In one embodiment, the second return pipe 32 includes a return section 321 and a weir section 322. The weir section 322 extends into the collection pipe 21. The end of the weir section 322 away from the return section 321 is funnel-shaped and has its opening facing upward. The bottom end of the flow-in end 221 is offset from the opening of the weir section 322.

[0041] The second return pipe 32 includes a return section 321 and a weir section 322. The return section 321 is a conventional high-temperature resistant glass tubular structure, connected to a three-way pipe 34 to transport the return liquid to the three-way pipe 34 and ultimately into the heating bottle 1. The weir section 322 is an extension, also made of high-temperature resistant glass, integrally formed and connected to the end of the return section 321 away from the three-way pipe 34, extending into the collection pipe 21. The end of the weir section 322 away from the return section 321 is funnel-shaped with the opening facing upwards, expanding the liquid receiving range so that the liquid in the upper layer of the liquid surface in the collection pipe 21 can smoothly enter the weir pipe. The bottom end of the guide end 221 is offset from the opening of the weir section 322, that is, the inclined end of the guide end 221 is offset from the opening of the weir section 322, preventing the liquid guided by the guide surface from falling into the weir section 322 and ensuring that the liquid can smoothly enter the collection pipe 21. The upward extension of the weir section 322 ensures that the upper liquid can smoothly enter the return section 321 for transport, and also ensures that the liquid entering the return section 321 can flow back to the collection pipe 21, thus ensuring the efficiency and reliability of the return transport of the liquid located on the upper layer of the collection pipe 21 to the heating bottle 1.

[0042] The working principle of the distillation and water separation device 100 in this scheme is explained in detail below: The mixed liquid in heating bottle 1 evaporates upon heating, forming vapor that enters collecting pipe 21 through connecting pipe 5. This vapor condenses into liquid and falls to the lower end of collecting pipe 21 for collection and stratification, with the denser liquid at the bottom and the less dense liquid at the top. When the organic solvent in the mixed liquid is denser than water, the third valve 43 at the bottom of collecting pipe 21 is closed, the first valve 41 on the first return pipe 31 is opened, and the second valve 42 on the second return pipe 32 is closed. The liquid level in collecting pipe 21 is ensured to be lower than the top of the weir section 322 in the second return pipe 32 to prevent the upper layer of liquid in collecting pipe 21 from entering the weir section 322. At this time, the denser organic solvent deposited at the bottom of collecting pipe 21 automatically flows back to heating bottle 1 through the first return pipe 31, circulating repeatedly to carry away water from heating bottle 1. When the water in the condenser accumulates to a certain level, the first valve 41 is closed and the third valve 43 is opened to release the water. When the density of the organic solvent in the mixed liquid is less than that of water, close the third valve 43, close the first valve 41 on the first reflux pipe 31, open the second valve 42 on the second reflux pipe 32, and ensure that the liquid level in the condenser 22 is higher than the weir. At this time, the less dense organic solvent will automatically flow back to the heating bottle 1 through the upper weir section 322. When the water in the condenser accumulates to a certain level, the second valve 42 can be closed and the third valve 43 can be opened to release the water. In this way, regardless of whether the organic solvent is denser or less dense than water, separation and water removal can be achieved by controlling the opening and closing of different reflux pipes, improving the convenience and applicability of the distillation and water separation device 100.

[0043] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A distillation and water separation apparatus, characterized in that, The device includes a heating flask, a condensing assembly, and a reflux assembly. The condensing assembly includes a collecting tube and a condensing tube. The heating flask is connected to the collecting tube, and the condensing tube is disposed in the collecting tube. The reflux assembly includes a first reflux tube and a second reflux tube. The first reflux tube has a first inlet and a first outlet at its two axial ends, and the second reflux tube has a second inlet and a second outlet at its two axial ends. Both the first and second inlets are connected to the collecting tube, and the second inlet is located above the first inlet. Both the first and second outlets are connected to the heating flask. The first and second reflux tubes are used to transport liquids of different liquid levels in the collecting tube back to the heating flask.

2. The distillation and water separation apparatus as described in claim 1, characterized in that, The distillation and water separation device further includes a first valve, a second valve, and a third valve. The first valve is connected to the first reflux pipe to control the opening and closing of the first reflux pipe. The second valve is connected to the second reflux pipe to control the opening and closing of the second reflux pipe. The third valve is connected to the bottom end of the collection pipe, and the height of the third valve is lower than that of the first liquid inlet to control the discharge of liquid in the collection pipe.

3. The distillation and water separation apparatus as described in claim 2, characterized in that, The distillation and water separation device also includes a connecting pipe that connects the heating flask and the collecting pipe, with the end of the connecting pipe away from the heating flask facing the condenser.

4. The distillation and water separation apparatus as described in claim 2, characterized in that, The reflux assembly also includes a spherical tube, one end of which is connected to the heating bottle in the axial direction, and the other end of which is connected to the first liquid outlet and the second liquid outlet.

5. The distillation and water separation apparatus as described in claim 4, characterized in that, The reflux assembly also includes a three-way tube, the three ends of which are respectively connected to the first liquid outlet, the second liquid outlet, and the spherical tube, and the end of the spherical tube away from the three-way tube is connected to the heating bottle.

6. The distillation and water separation apparatus as described in claim 5, characterized in that, The spherical tube includes a conical section, a spherical section, and a connecting section arranged in sequence. The end of the connecting section away from the spherical section is connected to the tee pipe, and the bottom end of the conical section is connected to the heating bottle.

7. The distillation and water separation apparatus as described in claim 5, characterized in that, The tee tube is a silicone flexible tube.

8. The distillation and water separation apparatus according to any one of claims 1 to 7, characterized in that, The condensation assembly also includes a piston, an inlet pipe, and an outlet pipe. The piston is connected to the top of the collecting pipe, and the condenser pipe is connected to the piston and extends into the collecting pipe. The inlet pipe and the outlet pipe are both connected to the condenser pipe to input and output cooling water, respectively.

9. The distillation and water separation apparatus as described in claim 8, characterized in that, The bottom of the condenser tube has a flow-guiding end, the cross-sectional area of ​​which gradually decreases along the direction close to the second return tube, and a flow-guiding surface is formed on the direction facing the second return tube, the flow-guiding surface being inclined.

10. The distillation and water separation apparatus as described in claim 9, characterized in that, The second return pipe includes a return section and a weir section. The weir section extends into the collection pipe. The end of the weir section away from the return section is funnel-shaped and has its opening facing upward. The bottom end of the flow-in end is offset from the opening of the weir section.

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