Steam heating body medium anti-suck-back system and reduced pressure distillation equipment

Abstract

The utility model relates to a steam heating body medium anti-suck-back system and reduced pressure distillation equipment, including: a distillation unit and a vacuum unit, the distillation unit includes a steam tank and a distillation box, the top of the steam tank is provided with an output pipe, one end of the output pipe far away from the steam tank is provided with a three-way valve, and the three-way valve is connected with the distillation box. The other two ports of the three-way valve are respectively connected with a gas ejector pipe and a balance pipe, the gas ejector pipe extends into the bottom of the distillation box, and the balance pipe is communicated with the top of the distillation box; a one-way valve is arranged on a pipeline of the balance pipe; the vacuum unit comprises a vacuum generator; and the vacuum generator is respectively connected with the steam tank and the distillation box. According to the utility model, the bypass is additionally arranged on the main pipeline, for heating the distillation box, of the steam tank, and the one-way valve is arranged on the bypass, so that when the vacuum degree in the distillation box is lower than that in the steam tank, the pressure on the two sides can be balanced through the balance pipe, and liquid in the distillation box can be effectively prevented from being sucked into the steam tank.

Description

Technical Field

[0001] The utility model relates to the technical field of organic cleaning solvents, in particular to a steam heating body medium back-inhalation prevention system and a vacuum distillation device. Background Art

[0002] The vacuum distillation of organic cleaning solvents is an important separation and purification technology. It is based on the difference in boiling points of liquids at different temperatures. The boiling point of the liquid is reduced by a vacuum device, thereby achieving efficient separation and purification. The main principle of vacuum distillation is that when a liquid is under a lower pressure, its boiling point will be lowered, which means that the liquid can evaporate at a lower temperature. This principle makes vacuum distillation an effective separation method, especially for those volatile substances. In the vacuum distillation process, common vacuum devices include rotary evaporators and fractionation towers, which can effectively control pressure and temperature to ensure the smooth progress of the distillation process.

[0003] In the prior art, the distillation of organic cleaning solvents is to pass steam into a distillation tank under a high vacuum environment, and the steam tank into which the steam is passed also needs to maintain a certain vacuum degree. During use, the vacuum degree often fluctuates between the steam tank and the heating tank, resulting in the back suction of the organic cleaning solvent in the distillation tank, causing contamination of the steam tank end. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect of the prior art that pressure fluctuation occurs during the distillation process of the cleaning solvent, which leads to the back-absorption of the organic cleaning solvent.

[0005] In order to solve the above technical problems, the utility model provides a steam heating body medium back-inhalation prevention system, comprising:

[0006] A distillation unit, the distillation unit comprising a steam tank and a distillation box, an output pipe is arranged on the top of the steam tank, a three-way valve is arranged on one end of the output pipe away from the steam tank, the other two ports of the three-way valve are respectively connected with an air injection pipe and a balance pipe, the air injection pipe extends into the bottom of the distillation box, the balance pipe is connected with the top of the distillation box; a one-way valve is arranged on the pipeline of the balance pipe;

[0007] A vacuum unit, wherein the vacuum unit comprises a vacuum generator, and the vacuum generator is connected to the steam tank and the distillation box respectively.

[0008] In one embodiment of the utility model, an injection pipe is provided at the end of the injection pipe, and the injection pipe is provided with a plurality of injection holes along the axial direction.

[0009] In an embodiment of the utility model, a solenoid valve is provided on the output pipe.

[0010] In one embodiment of the present invention, a first pressure gauge is provided on the steam tank, and the first pressure gauge is electrically connected to the vacuum generator.

[0011] In one embodiment of the present invention, a first control valve is provided between the vacuum generator and the steam tank, and the first control valve is electrically connected to the first pressure gauge.

[0012] In one embodiment of the utility model, a second pressure gauge is provided on the distillation box, and the second pressure gauge is electrically connected to the vacuum generator.

[0013] In one embodiment of the present invention, a second control valve is provided between the vacuum generator and the distillation box, and the second control valve is electrically connected to the second pressure gauge.

[0014] In one embodiment of the present invention, the vacuum unit further comprises a filter, and the filter is arranged at the air outlet of the vacuum generator.

[0015] In one embodiment of the utility model, a liquid level gauge is also provided on the surface of the distillation box.

[0016] A vacuum distillation device comprises the steam heating body medium back-inhalation prevention system.

[0017] The above technical solution of the utility model has the following advantages compared with the prior art:

[0018] The utility model describes a steam heating main body medium back-inhalation prevention system and a reduced-pressure distillation device, which increases a bypass on the main pipe for heating a distillation box by a steam tank, and arranges a one-way valve on the bypass. When the vacuum degree in the distillation box is lower than the vacuum degree in the steam tank, the pressures on both sides can be balanced through a balancing pipe, thereby effectively preventing the liquid in the distillation box from being sucked into the steam tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the distillation unit;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the medium vacuum unit;

[0023] Explanation of the reference numerals in the specification: 1. distillation unit; 2. vacuum unit; 11. steam tank; 12. distillation box; 13. three-way valve; 14. one-way valve; 15. output pipe; 16. jet pipe; 17. balance pipe; 18. jet pipe; 21. vacuum generator; 22. filter; 23. first control valve; 24. second control valve; 111. first pressure gauge; 121. second pressure gauge; 122. liquid level meter; 151. solenoid valve. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] Embodiment 1

[0026] Reference Figure 1-Figure 3 As shown, the utility model discloses a steam heating body medium back-inhalation prevention system, comprising:

[0027] A distillation unit 1, comprising a steam tank 11 and a distillation box 12, wherein an output pipe 15 is disposed at the top of the steam tank 11, a three-way valve 13 is disposed at one end of the output pipe 15 away from the steam tank 11, and the other two ports of the three-way valve 13 are respectively connected to an injection pipe 16 and a balance pipe 17, wherein the injection pipe 16 extends into the bottom of the distillation box 12, and the balance pipe 17 is connected to the top of the distillation box 12; a check valve is disposed on the pipeline of the balance pipe 17;

[0028] The vacuum unit 2 includes a vacuum generator 21 , and the vacuum generator 21 is connected to the steam tank 11 and the distillation box 12 respectively.

[0029] It can be imagined that the steam tank 11 in the utility model is used to generate steam, and the output pipe 15 port of the steam tank 11 is provided with a three-way valve 13, and the other two ports of the three-way valve 13 are both connected to the distillation box 12. One end of the jet pipe 16 extends into the bottom of the distillation box 12, and the steam in the steam tank 11 is introduced into the distillation box 12 to heat the organic cleaning solution in the distillation box 12. The balance pipe 17 is led out from the outlet of the three-way valve 13, and the balance pipe 17 is connected to the distillation box 12. When the vacuum degree in the distillation box 12 is lower than the vacuum degree in the steam tank 11, the pressure on both sides can be balanced through the balance pipe 17, which can effectively prevent the liquid in the distillation box 12 from being sucked into the steam tank 11. In addition, the direction of the one-way valve arranged on the balance pipe 17 is from the distillation box 12 to the side of the steam tank 11. In normal use, the steam generated in the steam tank 11 will not flow from the three-way valve 13 into the balance pipe 17. The vacuum generator 21 in the vacuum unit 2 is used to evacuate the steam tank 11 and the distillation box 12 to ensure a negative pressure state.

[0030] The utility model adds a bypass on the main pipe for heating the distillation box 12 by the steam tank 11, and sets a one-way valve on the bypass. When the vacuum degree in the distillation box 12 is lower than the vacuum degree in the steam tank 11, the pressure on both sides can be balanced through the balance pipe 17, which can effectively prevent the liquid in the distillation box 12 from being sucked into the steam tank 11.

[0031] Furthermore, an injection pipe 18 is provided at the end of the injection pipe 16 , and the injection pipe 18 is provided with a plurality of injection holes along the axial direction.

[0032] Specifically, by arranging a plurality of injection pipes 16 on the injection pipe 18, the contact area between the steam and the liquid in the distillation box 12 is increased, thereby improving the heating rate of the liquid.

[0033] Furthermore, a solenoid valve 151 is provided on the output pipe 15 , and the solenoid is used to control the connection between the steam tank 11 and the distillation box 12 . During actual operation, remote control is achieved through an automated operating system, and the solenoid valve 151 is opened to introduce the steam generated by the steam tank 11 into the distillation box 12 .

[0034] Furthermore, the steam tank 11 is provided with a first pressure gauge 111, and the first pressure gauge 111 is electrically connected to the vacuum generator 21. A first control valve 23 is provided between the vacuum generator 21 and the steam tank 11, and the first control valve 23 is electrically connected to the first pressure gauge 111.

[0035] Specifically, the first pressure gauge 111 is used to measure the negative pressure value in the steam tank 11. Preferably, the first pressure gauge 111 is electrically connected to the vacuum generator 21. When the pressure in the steam tank 11 does not meet the set value, the first pressure gauge 111 feeds back a signal, and the vacuum generator 21 starts to work to ensure the pressure value in the steam tank 11. Secondly, the first control valve 23 is arranged between the vacuum generator 21 and the steam tank 11, and is used to realize the connection and isolation between the vacuum generator 21 and the steam tank 11.

[0036] Furthermore, the distillation box 12 is provided with a second pressure gauge 121, and the second pressure gauge 121 is electrically connected to the vacuum generator 21. A second control valve 24 is provided between the vacuum generator 21 and the distillation box 12, and the second control valve 24 is electrically connected to the second pressure gauge 121.

[0037] Specifically, the second pressure gauge 121 is used to measure the negative pressure value in the distillation box 12. Preferably, the second pressure gauge 121 is electrically connected to the vacuum generator 21. When the pressure in the distillation box 12 does not meet the set value, the second pressure gauge 121 feeds back a signal, and the vacuum generator 21 starts to work to ensure the pressure value in the steam tank 11. Secondly, the second control valve 24 is arranged between the vacuum generator 21 and the distillation box 12, and is used to achieve the connection and isolation between the vacuum generator 21 and the distillation box 12.

[0038] Furthermore, the vacuum unit 2 further includes a filter 22, and the filter 22 is arranged at the air outlet of the vacuum generator 21. Specifically, the vacuum generator 21 is connected with the distillation box 12 during use, and the distillation box 12 stores an organic cleaning solvent, which contains many harmful components. By arranging the filter 22 at the air outlet of the vacuum generator 21, the harmful substances can be filtered to avoid polluting the outside air.

[0039] Furthermore, the input port of the one-way valve is arranged near one end of the distillation box 12. Specifically, the one-way valve 14 is installed in a direction from the distillation box 12 to the side of the steam tank 11. Since the balance pipe 17 is connected to the top of the distillation box 12, the pressure difference between the steam tank 11 and the distillation box 12 can be equalized at the moment of opening the solenoid valve 151, thereby preventing liquid from being sucked into the steam tank 11.

[0040] Furthermore, a liquid level gauge 122 is provided on the surface of the distillation box 12. The liquid level gauge 122 is connected to the liquid inside the distillation box 12 and is used to observe the height of the liquid level of the organic cleaning solvent inside.

[0041] Embodiment 2

[0042] A vacuum distillation device comprises the steam heating body medium back-inhalation prevention system described in the first embodiment.

[0043] In summary, the utility model introduces a steam heating body medium back-inhalation prevention system and a vacuum distillation device. The output pipe 15 port of the steam tank 11 is provided with a three-way valve 13. The other two ports of the three-way valve 13 are both connected to the distillation box 12. One end of the jet pipe 16 extends into the bottom of the distillation box 12 to introduce the steam in the steam tank 11 into the distillation box 12 to heat the organic cleaning solution in the distillation box 12. The balance pipe 17 is led out from the outlet of the three-way valve 13, and the balance pipe 17 is connected to the distillation box 12. When the vacuum degree in the distillation box 12 is lower than the vacuum degree in the steam tank 11, the pressure on both sides can be balanced through the balance pipe 17. The direction of the one-way valve is from the distillation box 12 to the side of the steam tank 11, which can effectively prevent the liquid in the distillation box 12 from being sucked into the steam tank 11. The utility model adds a bypass on the main pipe for heating the distillation box 12 by the steam tank 11, and sets a one-way valve on the bypass. When the vacuum degree in the distillation box 12 is lower than the vacuum degree in the steam tank 11, the pressure on both sides can be balanced through the balance pipe 17, which can effectively prevent the liquid in the distillation box 12 from being sucked into the steam tank 11.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A steam heating medium back-inhalation prevention system, characterized in that: include: A distillation unit, the distillation unit comprising a steam tank and a distillation box, an output pipe is arranged on the top of the steam tank, a three-way valve is arranged on one end of the output pipe away from the steam tank, the other two ports of the three-way valve are respectively connected with an air injection pipe and a balance pipe, the air injection pipe extends into the bottom of the distillation box, the balance pipe is connected with the top of the distillation box; a one-way valve is arranged on the pipeline of the balance pipe; A vacuum unit, wherein the vacuum unit comprises a vacuum generator, and the vacuum generator is connected to the steam tank and the distillation box respectively.

2. The steam heating medium back-inhalation prevention system according to claim 1 is characterized in that: An injection pipe is arranged at the end of the injection pipe, and a plurality of injection holes are arranged along the axial direction of the injection pipe.

3. The steam heating medium back-inhalation prevention system according to claim 1 is characterized in that: The output pipe is provided with a solenoid valve.

4. The steam heating medium back-inhalation prevention system according to claim 1 is characterized in that: The steam tank is provided with a first pressure gauge, and the first pressure gauge is electrically connected to the vacuum generator.

5. The steam heating medium back-inhalation prevention system according to claim 4 is characterized in that: A first control valve is provided between the vacuum generator and the steam tank, and the first control valve is electrically connected to the first pressure gauge.

6. The steam heating medium back-inhalation prevention system according to claim 1 is characterized in that: The distillation box is provided with a second pressure gauge, and the second pressure gauge is electrically connected to the vacuum generator.

7. The steam heating body medium back-inhalation prevention system according to claim 6 is characterized in that: A second control valve is provided between the vacuum generator and the distillation box, and the second control valve is electrically connected to the second pressure gauge.

8. The steam heating medium back-inhalation prevention system according to claim 1 is characterized in that: The vacuum unit further includes a filter disposed at a gas outlet of the vacuum generator.

9. The steam heating medium back-inhalation prevention system according to claim 1 is characterized in that: A liquid level gauge is also provided on the surface of the distillation box.

10. A vacuum distillation device, characterized in that: It comprises a steam heating body medium back-inhalation prevention system as described in any one of claims 1 to 9.

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