Molecular distillation device capable of efficiently removing light and heavy molecular substances

Abstract

The utility model relates to the field of molecular distillation, in particular to a molecular distillation device capable of efficiently removing light and heavy molecular substances, which comprises a tank body, a condenser and a collecting tank, the upper part of the tank body extends outwards to form an outer wall adopting an annular groove structure, the outer wall and the tank body are integrally formed, and an inner wall adopting an annular structure is arranged at a position in the tank body corresponding to the outer wall. The inner wall and the outer wall jointly define an annular sealed air cavity, a heating mechanism is arranged at the top end of the tank body, a cover body is arranged in the tank body, the top end of the cover body is communicated with a condenser through a transmission pipe, and the condenser is communicated with a collecting tank. And meanwhile, by utilizing the characteristic that the vortex tube outputs cold and hot air, the output hot air can assist in heating, and the output cold air can promote heat convection in the tank body, so that the liquid in the tank body is uniformly heated.

Description

Technical Field

[0001] The utility model relates to the field of molecular distillation, in particular to a molecular distillation device capable of efficiently removing light and heavy molecular substances. Background Art

[0002] Molecular distillation is a distillation method operated under high vacuum. At this time, the average free path of vapor molecules is greater than the distance between the evaporation surface and the condensation surface, so that the liquid mixture can be separated by utilizing the difference in evaporation rates of each component in the feed liquid. When the liquid mixture flows along the heating plate and is heated, light and heavy molecules will escape from the liquid surface and enter the gas phase. Since the free paths of light and heavy molecules are different, the moving distances of molecules of different substances after escaping from the liquid surface are different. If a condensation plate is properly set, the light molecules will reach the condensation plate and be condensed and discharged, while the heavy molecules cannot reach the condensation plate and are discharged along the mixed liquid. In this way, the purpose of material separation is achieved;

[0003] Molecular distillation is mainly completed through a molecular distillation tank. When the current molecular distillation tank is in use, most of them adopt the method of converting electric energy into heat energy for heating, such as electric heating tubes commonly used. Its external is a heat-conducting metal tube, and its surface is usually a plane or a wavy surface; during the heating process, the heat generated from the outer surface of the electric heating tube is directly transferred to the water body near the surface of the electric heating tube. The water body is heated and rises or undergoes local vaporization, and then further transferred to the part of the water body far from the electric heating tube through water body convection. However, in the process of the above fluid heat convection, the heat transfer speed is relatively slow, resulting in a situation where the temperature in the middle of the water body is relatively high while the temperature at a distance from the electric heating tube is relatively low. For a larger container, rapid and uniform heating cannot be achieved, so it is urgently needed to be changed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that the existing distillation tank cannot achieve rapid and uniform heating;

[0005] To solve the above technical problem, the technical solution provided by the utility model is: a molecular distillation device capable of efficiently removing light and heavy molecular substances, including a tank body, a condenser and a collection tank. The tank body, the condenser, the vacuum pump and the collection tank are sequentially connected through a transmission pipe. The upper part of the tank body extends outward with an outer wall adopting a ring groove structure, and the outer wall is integrally formed with the tank body. An inner wall adopting a ring structure is arranged at a position corresponding to the outer wall in the tank body. Both the upper and lower ends of the inner wall are fixedly connected to the inner wall of the tank body. A ring-shaped and sealed air cavity is jointly formed between the inner wall and the outer wall. A heating mechanism is arranged at the top of the tank body, and a cover body is arranged in the tank body. The top of the cover body is communicated with the condenser through a transmission pipe, and a collection tank is communicated with the condenser.

[0006] As an improvement, the heating mechanism includes a vortex tube, which is connected with a high-pressure intake pipe, a cold air outlet pipe and a hot air outlet pipe. The cold air outlet pipe of the vortex tube is connected with the top end of the air cavity, and an exhaust pipe is arranged at the bottom end of the air cavity. The hot air outlet pipe of the vortex tube penetrates through the top end of the tank body in a sealed manner and extends to the bottom, and is connected with a horizontally arranged cross pipe, and a plurality of exhaust holes are circumferentially arranged on the cross pipe at equal intervals.

[0007] As an improvement, a vortex plate wound in a spiral shape is arranged in the air cavity, and the cold air of the vortex tube moves along the surface streamline of the vortex plate.

[0008] As an improvement, a vacuum suction pipe communicated with the inner cavity is arranged on the condenser, and the end of the vacuum suction pipe is connected with a vacuum pump.

[0009] As an improvement, the cover body is in the shape of a horn with a narrow upper part and a wide lower part, and a filter screen is arranged on the inner side of the cover body.

[0010] As an improvement, a discharge pipe is arranged on the collection tank.

[0011] As an improvement, a feeding pipe is arranged at the top end of the tank body, and a discharging pipe is arranged at the bottom end of the tank body.

[0012] The advantages of the present utility model compared with the existing technology are as follows: through the setting of the heating mechanism, the boiling of the liquid is utilized to increase the convection, and at the same time, the characteristics of the vortex tube outputting cold and heat are utilized, so that the output hot air can assist in heating, and the output cold air can promote the heat convection in the tank body, thereby enabling the liquid in the tank body to be uniformly heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of a molecular distillation device capable of efficiently removing light and heavy molecular substances of the present utility model. As shown in the figure: 1. Tank body; 2. Outer wall; 3. Inner wall; 4. Air cavity; 5. Cover body; 6. Discharging pipe; 7. Exhaust pipe; 8. Vortex tube; 9. High-pressure intake pipe; 10. Cold air outlet pipe; 11. Hot air outlet pipe; 12. Cross pipe; 13. Feeding pipe; 14. Condenser; 15. Vacuum pump; 16. Collection tank; 17. Vortex plate; 1601. Discharge pipe; 1201. Exhaust hole; 501. Filter screen; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] The problems of the prior art are fully interpreted in the technical background of the present application, and there are no general or overarching problems. The problems to be solved by the present application are specifically described in the following detailed description of the utility model and the specific implementation manners, clarifying the technical problems to be solved by the technical solution, and determining that the technical solution of the present application has beneficial effects relative to the objective prior art.

[0016] Please refer to Figure 1 , an embodiment provided by the present utility model:

[0017] A molecular distillation device capable of efficiently removing light and heavy molecular substances, comprising a tank body 1, a condenser 14 and a collection tank 16. A feed pipe 13 is provided at the top end of the tank body 1, and a discharge pipe 6 is provided at the bottom end of the tank body 1. The tank body 1, the condenser 14, a vacuum pump 15 and the collection tank 16 are sequentially connected through a transfer pipe. An outer wall 2 with an annular groove structure extends outward from the upper part of the tank body 1, and the outer wall 2 is integrally formed with the tank body 1. An inner wall 3 with an annular structure is provided at a position corresponding to the outer wall 2 inside the tank body 1. Both the upper and lower ends of the inner wall 3 are fixedly connected to the inner wall 3 of the tank body 1. A sealed annular air cavity 4 is jointly formed between the inner wall 3 and the outer wall 2. A heating mechanism is provided at the top end of the tank body 1, and a cover body 5 is provided inside the tank body 1. The cover body 5 is in the shape of a horn with a narrow upper part and a wide lower part, and a filter screen is provided inside the cover body 5. The top end of the cover body 5 is communicated with the condenser 14 through a transfer pipe. A collection tank 16 is communicated with the condenser 14, and a discharge pipe 1601 is provided on the collection tank 16.

[0018] Combined with the attached Figure 1 , the heating mechanism includes a vortex tube 8. A high-pressure inlet pipe 9, a cold air outlet pipe 10 and a hot air outlet pipe 11 are communicated with the vortex tube 8. The cold air outlet pipe 10 of the vortex tube 8 is communicated with the top end of the air cavity 4. An exhaust pipe 7 is provided at the bottom end of the air cavity 4. The hot air outlet pipe 11 of the vortex tube 8 is hermetically passed through the top end of the tank body 1 and extends to the bottom, and is communicated with a horizontally arranged cross pipe 12. A plurality of exhaust holes 1201 are circumferentially arranged at equal intervals on the cross pipe 12. A vortex plate 17 wound into a spiral shape is provided inside the air cavity 4. The cold air of the vortex tube 8 moves along the streamline of the surface of the vortex plate 17. A vacuum suction pipe communicated with the inner cavity is provided on the condenser 14, and the end of the vacuum suction pipe is connected to a vacuum pump 15.

[0019] The tank body 1 is fed through the feeding pipe 13. The liquid level of the liquid added in the tank body 1 should be below the inner wall 3. The liquid in the tank body is heated by the heating mechanism. After the liquid is heated to a certain extent, a part of the liquid will evaporate to generate gas phase. The gas phase passes through the cover body 5 and enters the condenser 14 through the transmission pipe. The area for receiving the condensed liquid is relatively large. After the gas phase is precooled, it condenses into liquid state and falls into the collection tank 16, and is discharged through the discharge pipe 1601. It is convenient and fast to store the liquid, ensuring the efficiency of distillation. The residual liquid in the tank body 1 is discharged through the discharge pipe 6;

[0020] For the specific implementation mode of the heating mechanism, under the action of the vortex tube 8, the liquid in the middle of the tank body 1 is heated preferably, while the liquid on both sides is heated slowly by convection. When the cold air outlet pipe 10 of the vortex tube 8 is connected to the air cavity 4, due to the relatively high heat of the inner wall 3, when the inner wall 3 contacts the cold air, the gas near the inner side of the inner wall 3 is precooled and condenses. Since the gas condenses, the air pressure in the tank body 1 decreases, making it less than one standard atmospheric pressure. As a result, the boiling point of the liquid decreases. Taking water as an example, its boiling point is lower than 100 °C. Therefore, the liquid on the outer side of the container 1 that has not reached 100 °C also boils, thus greatly promoting heat convection and enabling the liquid in the tank body 1 to be heated evenly;

[0021] Further preferably, the temperature of the cold air output from the cold air outlet pipe is between 0 °C and -30 °C, and the temperature of the hot air output from the hot air outlet pipe is between 100 and 110 °C. Most preferably, the feeding pipe 13, the discharge tank 6, and the discharge pipe 1601 are all equipped with valves, so that a closed environment can be formed in the tank body 1 and the collection tank 16 in time after feeding or charging;

[0022] After considering the specification and practicing the application disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only regarded as exemplary, and the true scope of the present application is pointed out by the claims.

[0023] It should be understood that the present application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation to the protection scope of the present application.

Claims

1. A molecular distillation device capable of efficiently removing light and heavy molecular substances, comprising a tank body (1), a condenser (14) and a collecting tank (16), characterized in that: The tank body (1), the condenser (14), the vacuum pump (15) and the collection tank (16) are connected in sequence through a transmission pipe. An outer wall (2) with an annular groove structure is extended outward from the upper part of the tank body (1), and the outer wall (2) and the tank body (1) are integrally formed. An inner wall (3) with an annular structure is provided at a position corresponding to the outer wall (2) in the tank body (1). The upper and lower ends of the inner wall (3) are fixedly connected to the inner wall (3) of the tank body (1). The inner wall (3) and the outer wall (2) jointly form an annular air cavity (4) which is sealed. A heating mechanism is provided at the top of the tank body (1), and a cover body (5) is provided in the tank body (1). The top of the cover body (5) is connected to the condenser (14) through a transmission pipe, and the condenser (14) is connected to the collection tank (16).

2. A molecular distillation device capable of efficiently removing light and heavy molecular substances according to claim 1, characterized in that: The heating mechanism comprises a vortex tube (8), the vortex tube (8) being connected to a high-pressure air inlet pipe (9), a cold air outlet pipe (10) and a hot air outlet pipe (11), the cold air outlet pipe (10) of the vortex tube (8) being connected to the top of an air cavity (4), the bottom of the air cavity (4) being provided with an exhaust pipe (7), the hot air outlet pipe (11) of the vortex tube (8) being sealed through the top of the tank body (1) and extending to the bottom, and being connected to a horizontally arranged transverse pipe (12), the transverse pipe (12) being provided with a plurality of exhaust holes (1201) equidistantly arranged in a circumferential direction.

3. A molecular distillation device capable of efficiently removing light and heavy molecular substances according to claim 2, characterized in that: A vortex plate (17) wound into a threaded shape is arranged in the air cavity (4), and the cold air of the vortex tube (8) moves along the surface streamline of the vortex plate (17).

4. A molecular distillation device capable of efficiently removing light and heavy molecular substances according to claim 1, characterized in that: The condenser (14) is provided with a vacuum suction pipe communicating with its inner cavity, and the end of the vacuum suction pipe is connected to a vacuum pump (15).

5. A molecular distillation device capable of efficiently removing light and heavy molecular substances according to claim 1, characterized in that: The cover body (5) is in the shape of a trumpet that is narrow at the top and wide at the bottom, and a filter screen (501) is provided on the inner side of the cover body (5).

6. A molecular distillation device capable of efficiently removing light and heavy molecular substances according to claim 1, characterized in that: The collecting tank (16) is provided with a discharge pipe (1601).

7. A molecular distillation device capable of efficiently removing light and heavy molecular substances according to claim 1, characterized in that: The top end of the tank body (1) is provided with a feeding pipe (13), and the bottom end of the tank body (1) is provided with a discharging pipe (6).

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