An isolated electromagnetic induction thin film heating evaporation device

Abstract

The invention discloses an isolated electromagnetic induction thin film heating evaporation device. The key points of its technical solution are that the isolated electromagnetic induction thin film heating evaporation device also includes a motor reducer for driving a cylinder to rotate, an isolation component sleeved outside the cylinder, and an excitation coil wound outside the isolation component. The cylinder is heated by the excitation coil. There is a spacing area between the isolation component and the cylinder. The excitation coil is used to heat the cylinder in the air after power is turned on. Therefore, the present application uses electromagnetic reaction for heating. The cylinder is made of iron material, thereby realizing air-insulated heating of the cylinder. Because the isolation component is made of a material that does not produce electromagnetic reaction, the heat utilization rate can reach more than 95%, and the heating effect is excellent. Moreover, the cylinder rotates under the action of the motor reducer. Under the action of centrifugal force, the slurry can form a thin film structure on the inner wall of the cylinder, thereby making the heating more uniform and having strong practicality. The invention is applicable to the technical field of heat exchange equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and more specifically, to an isolated electromagnetic induction film heating evaporation device. Background Art

[0002] After the fluid is distributed into a thin film, it is easy to be heated quickly when it comes into contact with the heat source. The thinner the liquid film, the faster it heats up. It is suitable for small flow rates that require rapid heating and evaporation, evaporation of heat-sensitive fluids, distillation of high-boiling substances, high-temperature chemical reactions, etc. Common types of heaters of this type include rising film, falling film, scraped film, and centrifugal evaporators. Among them, the rising film and falling film types have poor effects and can only be used in occasions with low requirements. Scraped film and centrifugal evaporators are the mainstream in the current market. Scraped film and centrifugal evaporators are widely used in molecular distillation. For molecular distillation, the mean free path determines the separation effect. What is related to the equipment is the thickness of the liquid film, the uniformity, the temperature uniformity, and the distance between the hot liquid surface and the cooling surface.

[0003] At present, the shortcomings of scraped film evaporators are: high processing precision, easy wear of scrapers, uneven film formation, wave head affecting separation effect, the distance between the cooling surface and the evaporation surface is usually greater than 45mm due to the existence of scrapers, and the residence time of the fluid on the heating surface cannot be intentionally controlled. A complete set of heat transfer oil system is also required, the start-up and shutdown time is long, the energy loss is large in long-term use, waste oil is generated, and it is difficult to evaporate above 300℃. At present, it is difficult to make the evaporation surface of centrifugal evaporator equipment large, the heating is radiation heating or electromagnetic induction, the electric heating element or coil is in the material steam, the risk is high, the heating capacity is low, and the heat distribution is uneven, the center material has more heat supply and less heat supply, the edge has too much heat supply, the heating system is easy to damage or affect the material, the film thickness from the center to the periphery is uneven, the centrifugal force at the center is small and the edge force is large, as a result, the liquid film in the center is very thick and the edge is very thin. At present, the evaporation surface of centrifugal molecular distillation is conical, and the distance between the evaporation surface and the cooling surface is unequal. According to the free path theory of molecular distillation, the uniformity of the distance between the evaporation surface and the cooling surface affects the separation effect. Compared with the scraped film evaporator, the innovative structure does not require scrapers because the heating surface rotates by itself, there is no scraper wear, there is no wave head, and the fluid is evenly centrifuged under rotation to form a film. The distance between the cooling surface and the evaporation surface can be reduced to 5mm. The innovative structure can be tilted vertically or at a certain angle to change the residence time of the liquid in the equipment. The electromagnetic heating has a short start-up and shutdown time. The lack of a heat transfer oil is not economical, environmentally friendly and complicated, and the heating temperature can be increased to more than 500℃ as needed. Compared with the centrifugal evaporator, the innovative structure is easy to increase the evaporation area, the electromagnetic coil is isolated from the material vapor, reducing the safety risk, the heat distribution is uniform, the liquid film thickness is more uniform when the liquid distribution expands from line to surface than from point to surface, and the distance between the evaporation surface and the cooling surface is very uniform. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an isolated electromagnetic induction thin film heating evaporation device which adopts electromagnetic induction heating, has high heating uniformity, is highly practical, and can evenly adjust the residence time of the liquid film in the cylinder and adjust the thickness of the liquid film.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an isolated electromagnetic induction thin film heating evaporation device, comprising a cylinder, including a feed inlet, a heavy component discharge port, a light component discharge port and a cooling water inlet and outlet, and also comprising a motor reducer for driving the cylinder to rotate, an isolation component sleeved outside the cylinder and an excitation coil wrapped around the isolation component, wherein there is a spacing area between the isolation component and the cylinder, and the isolation component is made of a material that does not produce electromagnetic reaction, and the excitation coil is used to heat the cylinder in the air after power is turned on, and the cylinder is made of iron material.

[0006] The present invention is further configured as follows: an internal cooler is provided in the cylinder, the internal cooler is connected to a light component discharge port, and the cylinder is connected to a heavy component discharge port.

[0007] The present invention is further configured as follows: the motor reducer and the cylinder are connected by setting a magnetic transmission connection or a mechanical seal connection, and a vacuum generating assembly is provided between the magnetic transmission and the cylinder, the vacuum generating assembly includes a vacuum generating chamber arranged between the magnetic transmission and the cylinder and a vacuum generator arranged in the vacuum generating chamber, the vacuum generating chamber is communicated with the interval area, and the interval area is a vacuum area.

[0008] The present invention is further configured as follows: the motor reducer and the cylinder are connected by setting a magnetic transmission connection or a mechanical seal connection, and an evaporation component is provided between the magnetic transmission and the cylinder, and the evaporation component includes a steam chamber arranged between the magnetic transmission and the cylinder and connected to the cylinder, and a steam outlet connected to the steam chamber, and the steam chamber is connected to the interval area.

[0009] The present invention is further configured as follows: a liquid distributor is provided at the feed inlet, and the liquid distributor is used to adjust the thickness of the liquid film on the inner wall of the cylinder.

[0010] The present invention is further configured as follows: the liquid distributor includes a distribution regulator arranged at the liquid inlet, the distribution regulator includes a lifting rod, a plurality of circular plates arranged on the lifting rod, and a lifting cylinder for driving the lifting rod to lift and lower, each of the circular plates is configured so that the spacing between each circular plate and the cylinder gradually increases from the direction of the cylinder feed port to the direction of the discharge port, and the spacing gap between each circular plate and the cylinder is between 0.1mm-0.3mm, and the gap difference between two adjacent circular plates and the cylinder is 0.1mm.

[0011] The present invention is further configured as follows: the liquid distributor includes a step structure arranged on the inner wall of the inlet end of the cylinder, a distribution disc arranged at the liquid inlet and outlet and adapted to the inner diameter of the cylinder, and a lifting cylinder for controlling the lifting of the distribution disc. Under the lifting and lowering drive of the lifting cylinder, the distribution disc forms gaps of different spacings with the step structure of the cylinder, and the gaps become smaller towards the inlet end of the cylinder. The difference between two adjacent steps is 0.1mm, and the gap formed by the distribution disc and the step structure of the cylinder is between 0.1mm-0.3mm.

[0012] The present invention is further configured such that: the inner diameter of the cylinder gradually decreases from the liquid inlet end to the liquid outlet end or the inner diameter of the cylinder is the same.

[0013] The present invention is further configured such that: the cylinder adopts an inclination angle of 0 degree to 90 degrees.

[0014] The present invention is further configured as follows: the rotation speed of the cylinder is 100-1500 rpm, and the heating temperature of the excitation coil is heated from room temperature to 1000°C.

[0015] By adopting the above technical scheme, the beneficial effects are as follows: 1. The isolated electromagnetic induction thin film heating evaporation device also includes a motor reducer for driving the cylinder to rotate, an isolation component sleeved outside the cylinder, and an excitation coil wound outside the isolation component. The cylinder is heated by the excitation coil. There is a spacing area between the isolation component and the cylinder. The excitation coil is used to heat the cylinder in the air after power is turned on. Therefore, the present application is heated by electromagnetic reaction. The cylinder is made of iron material, thereby realizing the air heating of the cylinder. Because the isolation component is made of a material that does not produce electromagnetic reaction, the heat utilization rate can reach more than 95%, and the heating effect is excellent. Moreover, the cylinder rotates under the action of the motor reducer. Under the action of centrifugal force, the liquid can form a thin film structure on the inner wall of the cylinder, so that the heating is more uniform and the practicability is strong. Moreover, the winding density of the excitation coil can also be used to change the heat density distribution of the heating, which is convenient to adjust and has strong practicability.

[0016] 2. A liquid distributor is further provided at the feed inlet, and the liquid distributor is used to adjust the thickness of the liquid film on the inner wall of the cylinder. The liquid distributor includes a distribution regulator arranged at the liquid inlet, and the distribution regulator includes a lifting rod, a plurality of circular plates arranged on the lifting rod, and a lifting cylinder for driving the lifting rod to lift. The liquid distributor is used to adjust the thickness of the liquid film flowing to the inner wall of the cylinder, so as to achieve uniform distribution of the liquid, and the heating speed and collection can be well controlled. Moreover, each circular plate is configured so that the spacing between each circular plate and the cylinder gradually increases from the feed inlet direction of the cylinder to the discharge direction, and the spacing gap between each circular plate and the cylinder is between 0.1mm-0.3mm, and the gap difference between two adjacent circular plates and the cylinder is 0.1mm, so as to achieve multi-level adjustment of the liquid film thickness, and form different spacings between the sizes of different circular plates and the cylinder. The lifting cylinder is used to adjust the lifting rod to form different outer diameter circular plates to cooperate with the inlet end of the cylinder. The structure is simple and practical.

[0017] 3. Another embodiment of the present invention is to configure the liquid distributor to include a step structure arranged on the inner wall of the inlet end of the cylinder, a distribution disc arranged at the liquid inlet and matched with the inner diameter of the cylinder, and a lifting cylinder for controlling the lifting of the distribution disc. The distribution disc forms gaps of different spacings with the step structure of the cylinder under the lifting and lowering drive of the lifting cylinder, and the gaps become smaller towards the inlet end of the cylinder. The difference between two adjacent steps is 0.1mm, and the gap formed between the distribution disc and the step structure of the cylinder is between 0.1mm-0.3mm. By adopting the above scheme, the step structure arranged on the inner wall of the inlet end of the cylinder is coordinated with the lifting of the disc, so that the disc and each step form different spacings. The structure is simple, practical, and a good film-forming effect is formed with uniform film thickness.

[0018] 4. The inner diameter of the cylinder gradually decreases from the liquid inlet end to the liquid outlet end or the inner diameter of the cylinder is the same, and the cylinder adopts an inclination angle of 0 degree to 90 degrees. The present application can adopt two methods to form the liquid film and control the flow rate of the film on the inner wall of the cylinder to form a sufficient heating and separation of the liquid, thereby improving the lifting effect of the light component, with strong practicality and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an isolated electromagnetic induction thin film heating evaporation device embodiment of the present invention.

[0020] Figure 2 This is an embodiment of an isolated electromagnetic induction thin film heating evaporation device of the present invention. Figure 1 A schematic diagram of the enlarged structure in the middle.

[0021] Figure 3This is a schematic diagram of the structure of a distribution regulator in Example 1 of an isolated electromagnetic induction thin film heating evaporation device of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of a distribution regulator in Example 2 of an isolated electromagnetic induction thin film heating evaporation device of the present invention.

[0023] The reference numerals in the figure are as follows: 1. cylinder; 100. feed inlet; 101. discharge port for heavy component; 102. discharge port for light component; 103. cooling water inlet and outlet; 11. liquid distributor; 111. lifting rod; 112. round plate; 113. lifting cylinder; 114. step structure; 115. distribution disc; 2. motor reducer; 3. isolation assembly; 30. spacing area; 4. excitation coil; 5. internal cooler; 6. magnetic transmission; 7. vacuum generating assembly. DETAILED DESCRIPTION

[0024] Reference Figures 1 to 4 An isolated electromagnetic induction thin film heating evaporation device embodiment of the present invention is further described.

[0025] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0026] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0027] Example 1

[0028] An isolated electromagnetic induction thin film heating evaporation device comprises a cylinder 1, comprising a feed inlet 100, a heavy component discharge port 101, a light component discharge port 102 and a cooling water inlet and outlet 103, and also comprises a motor reducer 2 for driving the cylinder 1 to rotate, an isolation component 3 sleeved outside the cylinder 1 and an excitation coil 4 wound outside the isolation component 3, wherein a spacing area 30 is provided between the isolation component 3 and the cylinder 1, and the isolation component 3 is made of a material that does not generate an electromagnetic reaction, and the excitation coil 4 is used to heat the cylinder 1 in the air after power is turned on, and the cylinder 1 is made of an iron material, and the isolated electromagnetic induction thin film heating evaporation device also comprises a motor reducer 2 for driving the cylinder 1 to rotate, an isolation component 3 sleeved outside the cylinder 1 and an excitation coil 4 wound outside the isolation component 3 The excitation coil 4 is used to heat the cylinder 1. There is a spacing area 30 between the isolation component 3 and the cylinder 1. The excitation coil 4 is used to heat the cylinder 1 in the air after power is turned on. Therefore, the present application uses electromagnetic reaction for heating. The cylinder 1 is made of iron material, so as to achieve air heating of the cylinder 1. Because the isolation component 3 is made of a material that does not produce electromagnetic reaction, the heat utilization rate can reach more than 95%, and the heating effect is excellent. Moreover, the cylinder 1 rotates under the action of the motor reducer 2. Under the action of centrifugal force, the slurry can form a thin film structure on the inner wall of the cylinder 1, so that the heating is more uniform and the practicability is strong. The winding density of the excitation coil 4 can also be used to change the heat density distribution of the heating, which is convenient to adjust and has strong practicability.

[0029] The present invention is further configured such that an internal cooler 5 is provided in the cylinder 1, the internal cooler 5 is connected to the light component discharge port 102, and the cylinder 1 is connected to the heavy component discharge port 101. The built-in internal cooler 5 structure is adopted, and after the feed liquid is heated, the components of the light component evaporate on the internal cooler 5, thereby realizing the collection of the light component feed liquid, the structure is simple, and the practicability is strong.

[0030] The present invention is further configured such that the motor reducer 2 and the cylinder 1 are connected by a magnetic transmission 6 or a mechanical seal, and a vacuum generating assembly 7 is provided between the magnetic transmission 6 and the cylinder 1, the vacuum generating assembly 7 includes a vacuum generating chamber provided between the magnetic transmission 6 and the cylinder 1 and a vacuum generator provided in the vacuum generating chamber, the vacuum generating chamber is communicated with the interval area 30, and the interval area 30 is a vacuum area.

[0031] The present invention is further configured such that a liquid distributor 11 is provided at the feed inlet 100 , and the liquid distributor 11 is used to adjust the thickness of the liquid film on the inner wall of the cylinder 1 .

[0032] The present invention is further configured that the liquid distributor 11 includes a distribution regulator arranged at the liquid inlet, the distribution regulator includes a lifting rod 111, a plurality of circular plates 112 arranged on the lifting rod 111, and a lifting cylinder 113 for driving the lifting rod 111 to lift and lower, each of the circular plates 112 is configured so that the spacing between each circular plate 112 and the cylinder 1 gradually increases from the direction of the feed inlet 100 of the cylinder 1 to the direction of the discharge port, and the spacing gap between each circular plate 112 and the cylinder 1 is between 0.1mm-0.3mm, and the gap difference between two adjacent circular plates 112 and the cylinder 1 is 0.1mm. Further, a liquid distributor 11 is provided at the feed inlet 100, and the liquid distributor 11 is used to adjust the thickness of the liquid film on the inner wall of the cylinder 1. The liquid distributor 11 includes a distribution regulator arranged at the liquid inlet, and the distribution regulator includes a lifting rod 111, a plurality of circular plates 112 arranged on the lifting rod 111, and a lifting cylinder 113 for driving the lifting rod 111 to lift and lower. The circular plate 112 and the lifting cylinder 113 for driving the lifting rod 111 to lift and lower, adjust the thickness of the liquid film flowing to the inner wall of the cylinder 1 through the liquid distributor 11, so as to achieve uniform distribution of the liquid and good control of the heating speed and collection. In addition, by configuring each circular plate 112 so that the distance between each circular plate 112 and the cylinder 1 gradually increases from the direction of the feed inlet 100 of the cylinder 1 to the direction of the discharge port, and the distance gap between each circular plate 112 and the cylinder 1 is between 0.1mm-0.3mm, and the difference in the gap between two adjacent circular plates 112 and the cylinder 1 is 0.1mm, the multi-level adjustment of the liquid film thickness is achieved, and different distances are formed between the sizes of different circular plates 112 and the cylinder 1. The lifting cylinder 113 is used to adjust the lifting rod 111, so that circular plates 112 with different outer diameters are formed to cooperate with the inlet end of the cylinder 1, which has a simple structure and strong practicality.

[0033] It should be noted that according to the structure of the liquid distributor in this embodiment, when using the minimum spacing between the circular plate and the cylinder, the feeding direction needs to be from above the largest circular plate. If other spacings are used, it is best to feed between the two partitions.

[0034] The present invention is further configured such that the inner diameter of the cylinder 1 gradually decreases from the liquid inlet end to the liquid outlet end or the inner diameter of the cylinder 1 is the same, and the cylinder 1 adopts an inclination angle of 0 degrees to 90 degrees. By gradually decreasing the inner diameter of the cylinder 1 from the liquid inlet end to the liquid outlet end or the inner diameter of the cylinder 1 is the same, and the cylinder 1 adopts an inclination angle of 0 degrees to 90 degrees, the present application can use two methods to control the flow rate of the film on the inner wall of the cylinder 1 after the liquid film is formed, thereby forming sufficient heating and separation of the liquid, improving the lifting effect of the light component, and has strong practicality and simple structure.

[0035] The present invention is further configured such that the rotation speed of the cylinder 1 is 100-1500 rpm, and the heating temperature of the excitation coil 4 is heated from room temperature to 1000°C. By adopting the above rotation speed or heating temperature setting, different rotation speeds and heating temperatures can be selected according to the feed liquid, which is highly practical and easy to operate.

[0036] In an embodiment of the present invention, a pressure regulator can be arranged in the feed chamber of the slurry, that is, a pressure regulator is arranged above the circular plate, and the pressure regulator is configured as an elastic airbag filled with gas and at a constant pressure, and a standard air pressure value is set for the elastic airbag. The specific adjustment is as follows: when the pressure value of the feed chamber of the slurry is greater than the standard air pressure value of the elastic airbag, the volume of the elastic airbag will become smaller. At this time, the pressure in the feed chamber will be relieved due to the reduction of the elastic airbag, thereby reducing the impact of the slurry and affecting the film formation effect of the slurry on the inner wall of the cylinder; conversely, when the pressure in the feed chamber decreases, the hydraulic pressure in the feed chamber is less than the air pressure value of the elastic airbag, and the elastic airbag will restore its original volume, thereby achieving the effect of pressure regulation and ensuring the uniformity of film formation on the cylinder. It has strong practicality and simple structure.

[0037] Example 2

[0038] The structures of this embodiment and embodiment 1 are basically the same, and the only difference is the structure of the liquid distributor 11 in this embodiment. In this embodiment, the liquid distributor 11 is configured to include a step structure 114 arranged on the inner wall of the inlet end of the cylinder 1, a distribution disc 115 arranged at the liquid inlet and adapted to the inner diameter of the cylinder 1, and a lifting cylinder 113 for controlling the lifting of the distribution disc 115. The distribution disc 115 forms gaps of different spacings with the step structure 114 of the cylinder 1 under the lifting and lowering drive of the lifting cylinder 113, and the gaps become smaller towards the inlet end of the cylinder 1. The difference between two adjacent steps is 0.1mm, and the gap formed by the distribution disc 115 and the step structure 114 of the cylinder 1 is between 0.1mm-0.3mm. This embodiment is achieved by configuring the liquid distributor 11 to include a step structure 114 arranged at A step structure 114 on the inner wall of the inlet end of the cylinder 1, a distribution disc 115 arranged at the inlet and outlet of the liquid feed and adapted to the inner diameter of the cylinder 1, and a lifting cylinder 113 for controlling the lifting and lowering of the distribution disc 115. The distribution disc 115, under the lifting and lowering drive of the lifting cylinder 113, forms gaps of different spacings with the step structure 114 of the cylinder 1, and the gaps become smaller towards the inlet end of the cylinder 1. The difference between two adjacent steps is 0.1mm. The gap formed between the distribution disc 115 and the step structure 114 of the cylinder 1 is between 0.1mm and 0.3mm. By adopting the above scheme, by setting the step structure 114 on the inner wall of the inlet end of the cylinder 1, the lifting and lowering of the disc are coordinated to form different spacings between the disc and each step. The structure is simple and practical, and a good film-forming effect is formed with uniform film thickness.

[0039] It should be noted that, in this embodiment, the feeding direction of the slurry must be above the distribution disc, so that the slurry can flow out from the gap between the distribution disc and the step structure and form a film on the inner wall of the cylinder.

[0040] In this embodiment, it is necessary to adjust the inclination angle of the connecting surface between two adjacent steps in the step structure 114 to ensure that the liquid film has good fluidity, and the inclination angle of the connecting surface is preferably between 10 degrees and 60 degrees. While ensuring the film-forming effect, it also has good fluidity and no liquid accumulation. It is highly practical and has a simple structure.

[0041] It should be noted that the appendixes of the above two embodiments Figure 3 , 4 , is only a schematic description of the structure of the liquid distributor that can form a liquid film. The specific installation structure belongs to the conventional technical means of those skilled in the art and will not be repeated in the present invention.

[0042] The above embodiments are all short-range (molecular) distillation in which the low-boiling substances in the material are evaporated from the cylinder surface and cooled on the inner cooler surface.

[0043] Example 3

[0044] The above-mentioned embodiments 1 and 2 are mainly solutions adopted when there is an internal cooler. The main difference between this embodiment and embodiments 1 and 2 is that the internal cooler structure can be eliminated in this embodiment.

[0045] Specifically, it means that after the internal cooler and the light component outlet are removed, the low-boiling substances in the material evaporate from the cylinder surface through the spacing area to the steam outlet of the evaporation component. If there is a distillation tower outside the outlet, it will be used as a reboiler. If there is a condenser outside the outlet, it will be concentrated. The specific structure is as follows: the motor reducer 2 and the cylinder 1 are connected by setting a magnetic transmission 6 or a mechanical seal, and an evaporation component is provided between the magnetic transmission 6 and the cylinder 1. At this time, the evaporation component is the vacuum generating chamber in the above-mentioned embodiments 1 and 2. The evaporation component includes a steam chamber arranged between the magnetic transmission 6 and the cylinder 1 and connected to the cylinder, and a steam outlet connected to the steam chamber, and the steam chamber is connected to the spacing area.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An isolated electromagnetic induction thin film heating evaporation device, comprising a cylinder (1), including a feed inlet (100), a heavy component discharge port (101), a light component discharge port (102) and a cooling water inlet and outlet (103), characterized in that: The invention also comprises a motor reducer (2) for driving the cylinder (1) to rotate, an isolation component (3) sleeved outside the cylinder (1), and an excitation coil (4) wound around the isolation component (3), wherein a spacing area (30) is formed between the isolation component (3) and the cylinder (1), and the isolation component (3) is made of a material that does not generate an electromagnetic reaction. The excitation coil (4) is used to heat the cylinder (1) in space after power is turned on, and the cylinder (1) is made of a material that can generate an electromagnetic reaction. A liquid distributor (11) is provided at the feed inlet (100), and the liquid distributor (11) is used to adjust the thickness of the liquid film on the inner wall of the cylinder (1). The liquid distributor (11) comprises a distribution regulator arranged at the liquid inlet, and the distribution regulator comprises a lifting rod (111), a plurality of circular plates (112) arranged on the lifting rod (111), and a lifting cylinder (113) for driving the lifting rod (111) to move up and down. Each of the circular plates (112) is configured such that the spacing between each circular plate (112) and the cylinder (1) gradually increases from the feed inlet (100) direction of the cylinder (1) toward the discharge port direction, and the spacing gap between each circular plate (112) and the cylinder (1) is between 0.1 mm and 0.3 mm, and the difference in the gap between two adjacent circular plates (112) and the cylinder (1) is 0.1 mm.

2. The isolated electromagnetic induction thin film heating evaporation device according to claim 1, characterized in that: An internal cooler (5) is provided in the cylinder (1), the internal cooler (5) is connected to the light component discharge port (102), and the cylinder (1) is connected to the heavy component discharge port (101).

3. The isolated electromagnetic induction thin film heating evaporation device according to claim 2, characterized in that: The motor reducer (2) and the cylinder (1) are connected by a magnetic transmission (6) or by a mechanical seal, and a vacuum generating assembly (7) is provided between the magnetic transmission (6) and the cylinder (1). The vacuum generating assembly (7) comprises a vacuum generating chamber provided between the magnetic transmission (6) and the cylinder (1) and a vacuum generator provided in the vacuum generating chamber. The vacuum generating chamber is in communication with a spacing area (30), and the spacing area (30) is a vacuum area.

4. The isolated electromagnetic induction thin film heating evaporation device according to claim 2, characterized in that: The motor reducer (2) and the barrel (1) are connected via a magnetic transmission (6) or mechanically sealed, and an evaporation component is provided between the magnetic transmission (6) and the barrel (1), the evaporation component comprising a steam chamber provided between the magnetic transmission (6) and the barrel (1) and connected to the barrel, and a steam outlet connected to the steam chamber, and the steam chamber is connected to the spacing area.

5. The isolated electromagnetic induction thin film heating evaporation device according to claim 1, characterized in that: The inner diameter of the cylinder (1) gradually decreases from the liquid inlet end to the liquid outlet end, or the inner diameter of the cylinder (1) is the same.

6. The isolated electromagnetic induction thin film heating evaporation device according to claim 1, characterized in that: The cylinder (1) has an inclination angle of 0-90 degrees.

7. The isolated electromagnetic induction thin film heating evaporation device according to claim 1, characterized in that: The rotation speed of the cylinder (1) is 100-1500 rpm, and the heating temperature of the excitation coil (4) is heated from room temperature to 1000°C.

8. An isolated electromagnetic induction thin film heating evaporation device, comprising a cylinder (1), including a feed inlet (100), a heavy component discharge port (101), a light component discharge port (102) and a cooling water inlet and outlet (103), characterized in that: The invention also comprises a motor reducer (2) for driving the cylinder (1) to rotate, an isolation component (3) sleeved outside the cylinder (1), and an excitation coil (4) wound around the isolation component (3), wherein a spacing area (30) is formed between the isolation component (3) and the cylinder (1), and the isolation component (3) is made of a material that does not generate an electromagnetic reaction. The excitation coil (4) is used to heat the cylinder (1) in space after power is turned on. The cylinder (1) is made of a material that can generate an electromagnetic reaction. A liquid distributor (11) is provided at the feed inlet (100). The liquid distributor (11) is used to adjust the thickness of the liquid film on the inner wall of the cylinder (1). The distributor (11) comprises a step structure (114) arranged on the inner wall of the inlet end of the cylinder (1), a distribution disc (115) arranged at the inlet and outlet of the liquid feed and adapted to the inner diameter of the cylinder (1), and a lifting cylinder (113) for controlling the lifting and lowering of the distribution disc (115). When driven by the lifting and lowering cylinder (113), the distribution disc (115) forms gaps of different spacings with the step structure (114) of the cylinder (1), and the gaps become smaller toward the inlet end of the cylinder (1). The difference between two adjacent steps is 0.1 mm, and the gap formed by the distribution disc (115) and the step structure (114) of the cylinder (1) is between 0.1 mm and 0.3 mm.

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