Scraper-type thin-film evaporator and method for adjusting the same

Abstract

The application relates to the technical field of thin-film evaporators, and discloses a scraper type thin-film evaporator, which has the technical scheme as follows: a gas-liquid separator main body, an evaporator main body, a path limiting part and a purity improving part; the gas-liquid separator main body and the evaporator main body are connected with each other through pipelines; the gas-liquid separator main body is vacuumized; the moving directions of the gas and the liquid film generated when the gas-liquid separator main body separates gas and liquid are opposite; the path limiting part is arranged in the gas-liquid separator main body and is used for limiting the running path of the liquid film; the purity improving part is arranged on the path limiting part and is used for guiding the gas into the path limiting part and adjusting the amount of the liquid passing through the path limiting part; after the liquid to be treated flows into the gas-liquid separator main body, a film is formed, so that the heat transfer efficiency is high and the evaporation speed is fast.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thin film evaporator, more particularly to a scraper type thin film evaporator. BACKGROUND

[0002] Thin film evaporator is one of the types of evaporator, which is characterized by the heat transfer and evaporation of the material liquid flowing along the wall of the heating pipe in a film shape, and has the advantages of high heat transfer efficiency, fast evaporation speed and short material residence time, and is particularly suitable for the evaporation of heat-sensitive materials. The traditional thin film evaporator is not convenient for detailed processing in terms of purity after gas-liquid separation, which may cause insufficient gas-liquid separation, the separated gas carrying a large amount of liquid, and the separated liquid carrying a certain amount of gas, and may need a secondary purification process when collecting, so that the further detailed work is not convenient for purification. SUMMARY

[0003] In view of the deficiencies of the prior art, the first purpose of the present application is to provide a scraper type thin film evaporator, which can form a thin film when the liquid to be treated flows into the gas-liquid separator body, so as to achieve the effects of high heat transfer efficiency and fast evaporation speed. The path limiting part is used to limit the moving track of the thin film affected by gravity, so that the thin film moves in the direction of the path limiting part, thereby improving the heat transfer efficiency and evaporation speed. The purity improving part is used to limit the liquid after gas-liquid separation, that is, to adjust the amount of liquid passing through the path limiting part, so as to adjust the real-time passing amount of different liquids during gas-liquid separation. When the passing amount is reduced, the liquid flow speed will slow down, thereby prolonging the liquid residence time and improving the heat transfer efficiency and evaporation speed. When the passing amount is increased, the liquid residence time is reduced, which avoids the long residence time of some liquids affecting the efficiency of gas-liquid separation and doing useless work. The real-time adjustment can be completed by reducing and then increasing the passing amount of a liquid during gas-liquid separation, which is targeted and improves the purity of liquid gas-liquid separation and the heat transfer efficiency and evaporation speed. The purity improving part is used to re-introduce the gas obtained during gas-liquid separation, so that the gas also walks along the track of the path limiting part once, and the heated inert gas is introduced into the path limiting part again, and the gas is heated by the partition plate between the gas and the inert gas, thereby improving the purity and making the purification of the gas more convenient after being introduced into the evaporator body.

[0004] The second purpose of the present application is to provide an adjusting method of the scraper type thin film evaporator.

[0005] To achieve the above object, the present application provides the following technical solutions: A scraper type thin film evaporator, comprising a gas-liquid separator body, an evaporator body, a path limiting part and a purity improving part; the gas-liquid separator body and the evaporator body are connected with each other through pipelines, the gas-liquid separator body is in a vacuum state, the moving directions of the gas and the liquid film generated when the gas-liquid separator body separates the gas and the liquid are opposite, the path limiting part is arranged in the gas-liquid separator body and is used for limiting the running path of the liquid film, the purity improving part is arranged on the path limiting part and is used for guiding the gas into the path limiting part and adjusting the amount of the liquid passing through the path limiting part, after the liquid to be treated flows into the gas-liquid separator body, a film is formed, so that the heat transfer efficiency is high and the evaporation speed is fast, the path limiting part is used for limiting the moving track of the film under the influence of gravity, so that the film moves in the direction of the path limiting part, and then the heat transfer efficiency and the evaporation speed are improved, the purity improving part is used for limiting the liquid after the gas-liquid separation, that is, the amount of the liquid passing through the path limiting part is adjusted, so that the real-time passing amount is adjusted according to different liquids during the gas-liquid separation, when the passing amount is reduced, that is, the liquid flow speed is reduced, so that the liquid residence time is prolonged, and then the heat transfer efficiency and the evaporation speed are improved, when the passing amount is adjusted to increase, the liquid residence time is reduced, some liquid is prevented from staying for a long time to cause the gas-liquid separation for too long to affect the efficiency and do useless work, the real-time adjustment can be completed by reducing the passing amount and then increasing the passing amount during the gas-liquid separation of a kind of liquid, the adjustment is targeted, the purity of the liquid after the gas-liquid separation is improved, and the heat transfer efficiency and the evaporation speed are improved, the gas obtained in the gas-liquid separation is guided again by the purity improving part, so that the gas also moves along the track of the path limiting part once, and the heated inert gas is guided again by the purity improving part and moves along the track of the path limiting part once, the gas is heated by the partition plate between the gas and the inert gas, so that the purity is improved, and the gas is guided into the evaporator body again, so that the purification is more convenient.

[0006] As a further improvement of the present application, the path limiting part comprises a hollow inner container, a spiral plate, a film groove, a rotating part, six scrapers, at least two open grooves and a motor; the inner container is fixedly arranged in the gas-liquid separator body, the spiral plate is fixedly arranged in the inner container, the film groove is arranged on the spiral plate according to the path of the spiral plate, the rotating part is rotatably arranged in the inner container, the six scrapers are annularly fixedly connected to the side surface of the rotating part and are in sliding cooperation with the spiral plate, the two open grooves are respectively arranged at the upper and lower ends of the inner container, and the motor is arranged outside the gas-liquid separator body and is connected with the rotating part, after the liquid flows into the open groove, the spiral path track of the spiral plate is used for limiting the movement of the liquid, so that the centripetal force is formed and the liquid is moved along the film groove according to the spiral track after all the scrapers are driven to rotate by the rotating part, so that the heat transfer efficiency is high and the evaporation speed is fast.

[0007] As a further improvement of the present application, it also comprises an expansion part; the expansion part is arranged on the rotating part, for increasing the space for film formation, so as to improve the gas-liquid separation efficiency, the expansion part comprises an inner rod, a threaded strip, a hollow groove and six fixing plates; the hollow groove is arranged in the rotating part, the threaded strip is fixedly connected to the side wall of the hollow groove, the inner rod is fixedly connected to the inner container, and the six fixing plates are annularly fixedly connected to the inner rod and are in sliding cooperation with the threaded strip; by arranging an expansion part inside the rotating part, and then cooperating with the rotating force of the rotating part during rotation, liquid film is generated between the fixing plates, so as to increase the gas-liquid separation efficiency, and since the space inside the rotating part is smaller than the inner container, the liquid does not need to be purified, and the film formed by the threaded strip during rotation of the rotating part achieves the function of increasing the gas-liquid separation effect, and the generated gas is also introduced into the path limiting part for gas purification.

[0008] As a further improvement of the present application, the purity improving part comprises a baffle, a moving plate, a partition plate, two one-way valves and two ventilation spaces; the baffle is arranged in the film groove, the moving plate is in sliding cooperation with the baffle and abuts against the side wall of the film groove, the partition plate is fixedly arranged on the moving plate and abuts against the side wall of the film groove, the space between the moving plate and the side wall of the film groove is isolated into two ventilation spaces by the partition plate, and the two one-way valves are arranged in the two ventilation spaces respectively and on the spiral plate; the two ventilation spaces are respectively for flowing of inert gas with heat and gas separated out of the gas-liquid separator body; by cooperating the baffle and the moving plate, the distance between the side wall of the film groove and the moving plate is the size of the film, so that the film amount can be adjusted by changing the position of the moving plate, the distance between the moving plate and the other side wall of the film groove is sealed by cooperating the baffle, and the two ventilation spaces are formed by the partition plate, so that the gas generated by gas-liquid separation and the inert gas with heat flow in respectively, the heat transfer efficiency is high, the evaporation speed is fast, and the gas-liquid separation purity and efficiency are improved.

[0009] As a further improvement of the present application, the side of the film groove abutting against the moving plate is an inclined surface; at the input end of the film groove, the side of the film groove abutting against the moving plate is from thin to thick, and at the output end of the film groove, the side of the film groove abutting against the moving plate is from thick to thin; by adjusting the thickness of the side wall of the film groove, the inclined surface is formed, so that when the side wall is thin, the liquid storage amount is large, and when the side wall is gradually thick, the liquid is equivalent to be peeled layer by layer, thereby improving the gas-liquid separation efficiency, and it is convenient to adjust the thickness of the side wall for different liquids.

[0010] As a further improvement of the application, the moving plate comprises a connecting plate, an abutting plate, a moving groove and a connecting spring; the connecting plate is in sliding fit with the baffle, the abutting plate is in sliding fit with the connecting plate and abuts against the side wall of the film groove, the moving groove is arranged in the abutting plate, and the connecting spring is arranged in the moving groove and connected with the connecting plate; the connecting spring is used to abut against the abutting plate, so that the abutting plate can increase the sealing between the abutting plate and the film groove, and the size of the liquid film can be adjusted when the moving plate moves, thereby improving the purity and efficiency.

[0011] As a further improvement of the application, the purity improving part further comprises a vibrating plate; the vibrating plate is arranged in the film groove, and a plurality of protrusions are arranged on the side of the vibrating plate away from the film groove; the vibrating plate is in abutment with the abutting plate, so that when the scraper rotates, the baffle is rubbed and then transmits the vibration to the vibrating plate, and the plurality of protrusions physically hit the film, thereby increasing the gas-liquid separation efficiency and improving the gas-liquid separation efficiency and purity.

[0012] As a further improvement of the application, the purity improving part further comprises a return spring; one end of the return spring is connected to the moving plate, and the other end of the return spring is connected to the side wall of the film groove; the gas separated by the gas-liquid separator body is first guided to flow into the ventilation space without the return spring and then flows to the evaporator body; the movement of the moving plate is controlled by the return spring, so that the distance between the film groove and the abutting plate is changed by adjusting the amount of inert gas, thereby achieving the purpose of adjustment.

[0013] As a further improvement of the application, all the moving fits are sealed, and are provided with sealing rubber strips, and further comprise a dynamic adjustment module; the dynamic adjustment module obtains the total amount of the gas-liquid mixture, the flow rate of the gas-liquid mixture, the flow rate and flow of the liquid generated after gas-liquid separation, and collects the detection actual value; a threshold value is preset in the database, the threshold value comprises the liquid flow rate after gas-liquid separation per unit volume, the temperature required for gas-liquid separation, the temperature required for the liquid flow generated after gas-liquid separation, the detection actual value, and a deviation value is obtained by comparing the preset threshold value and the detection actual value; the amount of inert gas is adjusted according to the deviation value.

[0014] The application has the following advantages:

[0015] (1) The application can form a thin film when the liquid to be treated flows into the gas-liquid separator body, thereby achieving high heat transfer efficiency and fast evaporation speed. The path limiting part limits the moving track of the thin film affected by gravity, so that the thin film moves in the direction of the path limiting part, thereby improving the heat transfer efficiency and evaporation speed. The purity improving part limits the liquid after gas-liquid separation, that is, adjusts the amount of liquid passing through the path limiting part, so as to adjust the real-time passing amount when gas-liquid separation of different liquids. When the passing amount is reduced, the liquid flow speed is slowed down, thereby prolonging the liquid residence time, and improving the heat transfer efficiency and evaporation speed. When the passing amount is increased, the liquid residence time is reduced, avoiding that some liquids stay for a long time to affect the efficiency of gas-liquid separation and do useless work. The real-time adjustment can be completed by reducing and then increasing the passing amount of a liquid during gas-liquid separation, which is targeted and improves the purity of liquid gas-liquid separation and the heat transfer efficiency and evaporation speed. The purity improving part is used to re-introduce the gas obtained during gas-liquid separation, so that the gas also walks along the track of the path limiting part once, and the heated inert gas is introduced into the path limiting part again, and the gas is heated by the baffle between the gas and the inert gas, thereby improving the purity. The gas is re-introduced into the evaporator body, and the purification is more convenient.

[0016] (2) The spiral path track of the spiral plate is used to limit the movement of the liquid, so that the centripetal force is formed after the rotating member drives all the scrapers to rotate, and the liquid is moved along the spiral track of the thin film groove, thereby achieving high heat transfer efficiency and fast evaporation speed.

[0017] (3) The application adds an expansion part in the rotating member, and then cooperates with the rotating force of the rotating member itself to generate a liquid film between the rotating member and the fixed plate during rotation, thereby increasing the efficiency of gas-liquid separation. Since the space in the rotating member is smaller than the inner container, the liquid does not need to be purified. The thin film formed by the screw strip during rotation of the rotating member achieves the function of increasing the gas-liquid separation effect, and the generated gas is introduced into the path limiting part for gas purification.

[0018] (4) The application cooperates the baffle and the moving plate, so that the distance between the thin film groove side wall and the moving plate is the size of the thin film. The amount of the thin film can be adjusted by changing the position of the moving plate. The distance between the moving plate and the other side wall of the thin film groove is sealed by cooperating with the baffle, and then separated by the baffle, thereby forming two ventilation spaces to make the gas generated by gas-liquid separation and the inert gas with heat enter respectively, thereby achieving high heat transfer efficiency and fast evaporation speed, and improving the purity and efficiency of gas-liquid separation.

[0019] (5) The film groove is abutted by the inclined surface of the moving plate, so that the liquid storage capacity is large when the side wall is thin, and the liquid is gradually stripped layer by layer when the side wall gradually thickens, thereby improving the gas-liquid separation efficiency, and the thickness of the side wall can be adjusted for different liquids.

[0020] (6) The connecting spring is used to abut against the abutment plate, so that the abutment plate can increase the sealing between the film groove, the size of the liquid film can be adjusted when the moving plate moves, thereby improving the purity and efficiency, and the movement of the moving plate is controlled by the return spring, so that the distance between the film groove and the abutment plate is changed by adjusting the amount of inert gas, thereby achieving the purpose of adjustment.

[0021] (7) The vibration plate is arranged in the film groove and abuts against the abutment plate, so that the baffle will be rubbed when the scraper rotates, and then the vibration will be transmitted to the vibration plate, and the film is physically hit by the protrusions, thereby increasing the gas-liquid separation efficiency and improving the gas-liquid separation efficiency and purity. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a front view structural schematic diagram of the present application;

[0023] Figure 2 is a schematic diagram of the internal structure of the present application;

[0024] Figure 3 is a schematic diagram of the structure at the path limiting portion in the present application; Figure 2

[0025] Figure 4 is a schematic diagram of the internal structure of the present application; Figure 3

[0026] Figure 5 is a schematic diagram of the cross-sectional structure of the present application; Figure 4

[0027] Figure 6 is a schematic diagram of the internal structure of the present application; Figure 5

[0028] Figure 7 is a schematic diagram of the structure at the spiral plate in the present application; Figure 3

[0029] Figure 8 is a schematic diagram of the structure at the purity improving portion in the present application; Figure 7

[0030] Figure 9 is a schematic diagram of the structure at the moving plate in the present application. Figure 8

[0031] ​​​​​​​Reference numerals: 1, gas-liquid separator main body; 11, evaporator main body; 2, path defining portion; 21, inner container; 22, spiral plate; 221, film groove; 23, rotating member; 24, scraper; 25, opening groove; 3, expansion portion; 31, inner rod; 32, threaded strip; 33, hollow groove; 34, fixed plate; 4, purity improving portion; 41, vibrating plate; 42, baffle; 43, moving plate; 44, partition; 45, one-way valve; 46, return spring; 47, ventilation space; 431, link plate; 432, abutment plate; 433, moving groove; 434, connecting spring. DETAILED DESCRIPTION

[0032] The application will be further described below in conjunction with the drawings and examples. Identical parts are denoted by identical reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.

[0033] REFERENCE Figures 1-9As shown, the scraper type thin film evaporator of the embodiment includes a gas-liquid separator body 1, an evaporator body 11, a path limiting part 2 and a purity improving part 4; the gas-liquid separator body 1 and the evaporator body 11 are connected with each other through pipelines, the gas-liquid separator body 1 is in vacuum, the moving directions of the gas and the liquid film generated when the gas-liquid separator body 1 separates the gas and the liquid are opposite, the path limiting part 2 is arranged in the gas-liquid separator body 1 and is used for limiting the running path of the liquid film, the purity improving part 4 is arranged on the path limiting part 2 and is used for guiding the gas into the path limiting part 2 and adjusting the amount of the liquid passing through the path limiting part 2, after the liquid to be treated flows into the gas-liquid separator body 1, a film is formed, so that the heat transfer efficiency is high and the evaporation speed is fast, the path limiting part 2 is used for limiting the moving track of the film affected by gravity, so that the film moves according to the direction of the path limiting part 2, and the heat transfer efficiency and the evaporation speed are improved, the purity improving part 4 is used for limiting the liquid after the gas-liquid separation, that is, the amount of the liquid passing through the path limiting part 2 is adjusted, so that the real-time passing amount is adjusted according to different liquids during the gas-liquid separation, when the passing amount is reduced, that is, the liquid flow speed is reduced, so that the liquid residence time is prolonged, and the heat transfer efficiency and the evaporation speed are improved, when the passing amount is adjusted to increase, the liquid residence time is reduced, so that the liquid is not separated for too long to affect the efficiency, and useless work is avoided, the real-time adjustment can be completed by reducing the passing amount and then increasing the passing amount during the gas-liquid separation of a liquid, the adjustment is targeted, the purity of the liquid after the gas-liquid separation is improved, and the heat transfer efficiency and the evaporation speed are improved, the gas obtained during the gas-liquid separation is guided again by the purity improving part 4, so that the gas also walks along the track of the path limiting part 2 once, and the heated inert gas is guided again by the purity improving part 4 and walks along the track of the path limiting part 2 once, the gas is heated by the baffle 44 between the gas and the inert gas, so that the purity is improved, and the gas is guided into the evaporator body 11, so that the purification is more convenient.

[0034] As Figures 1-9As shown, the path limiting part 2 includes a hollow inner liner 21, a spiral plate 22, a film groove 221, a rotating component 23, six scrapers 24, at least two opening grooves 25, and a motor. The inner liner 21 is fixedly installed inside the gas-liquid separator body 1, the spiral plate 22 is fixedly installed inside the inner liner 21, the film groove 221 is opened on the spiral plate 22 according to the path of the spiral plate 22, the rotating component 23 is rotatably installed inside the inner liner 21, the six scrapers 24 are annularly fixedly connected to the side of the rotating component 23 and slide in cooperation with the spiral plate 22, the two opening grooves 25 are respectively opened at the upper and lower ends of the inner liner 21, and the motor is located outside the gas-liquid separator body 1 and connected to the rotating component 23. After the liquid flows in from the opening groove 25, the movement of the liquid is limited by the spiral path trajectory of the spiral plate 22. Thus, after the rotating component drives all the scrapers 24 to rotate, a centripetal force is generated, which drives the liquid to move along the spiral trajectory of the film groove 221, thereby achieving the effects of high heat transfer efficiency and fast evaporation rate.

[0035] like Figures 1-9 As shown, it also includes an amplification section 3; the amplification section 3 is disposed on the rotating component 23 to increase the space for film formation, thereby improving the gas-liquid separation efficiency. The amplification section 3 includes an inner rod 31, a threaded strip 32, a hollow groove 33, and six fixing plates 34; the hollow groove 33 is formed inside the rotating component 23, the threaded strip 32 is fixedly connected to the side wall of the hollow groove 33, the inner rod 31 is fixedly connected to the inner liner 21, and the six fixing plates 34 are circumferentially fixedly connected to the inner rod 31 and slide in cooperation with the threaded strip 32. By adding an amplification section 3 inside the rotating component, a liquid film is generated between the rotating component and the fixing plates 34, thereby increasing the gas-liquid separation efficiency. Since the internal space of the rotating component is smaller than that of the inner liner 21, the liquid does not need to be purified. The film formed by the threaded strip 32 when the rotating component rotates achieves the function of increasing the gas-liquid separation effect. The generated gas is also introduced into the path limiting section 2 for gas purification.

[0036] like Figures 1-9As shown, the purity improving part 4 includes a baffle 42, a moving plate 43, a partition plate 44, two one-way valves 45 and two ventilation spaces 47; the baffle 42 is arranged in the film groove 221, the moving plate 43 is in sliding fit with the baffle 42 and abuts against the side wall of the film groove 221, the partition plate 44 is fixedly arranged on the moving plate 43 and abuts against the side wall of the film groove 221, the space between the moving plate 43 and the side wall of the film groove 221 is isolated into two ventilation spaces 47, and the two one-way valves 45 are respectively arranged in the two ventilation spaces 47 and on the spiral plate 22; the two ventilation spaces 47 are respectively used for flowing of the inert gas with heat and the gas separated out from the gas-liquid separator main body 1, the distance between the side wall of the film groove 221 and the moving plate 43 is the size of the film by utilizing the cooperation of the baffle 42 and the moving plate 43, the adjustment of the film amount can be completed by changing the position of the moving plate 43, the distance between the moving plate 43 and the other side wall of the film groove 221 is sealed by cooperating the baffle 42, and the two ventilation spaces are formed by utilizing the partition plate 44, so that the gas generated in the gas-liquid separation and the inert gas with heat are respectively introduced, the effects of high heat transfer efficiency and fast evaporation speed are achieved, and the gas-liquid separation purity and efficiency are improved.

[0037] As shown in the drawings, Figures 1-9 As shown, the side wall abutting against the moving plate 43 of the film groove 221 is an inclined surface; when the input end of the film groove 221, the side wall abutting against the moving plate 43 is from thin to thick, and when the output end of the film groove 221, the side wall abutting against the moving plate 43 is from thick to thin, so that when the side wall is thin, the liquid storage amount is large, and when the side wall gradually thickens, the liquid is equivalent to be peeled layer by layer, thereby improving the gas-liquid separation efficiency and facilitating the adjustment of the thickness of the side wall for different liquids.

[0038] As shown in the drawings, Figures 1-9 As shown, the moving plate 43 includes a connecting plate 431, an abutting plate 432, a moving groove 433 and a connecting spring 434; the connecting plate 431 is in sliding fit with the baffle 42, the abutting plate 432 is in sliding fit with the connecting plate 431 and abuts against the side wall of the film groove 221, the moving groove 433 is arranged in the abutting plate 432, and the connecting spring 434 is arranged in the moving groove 433 and connected with the connecting plate 431; by utilizing the abutting of the connecting spring 434 to the abutting plate 432, the sealing between the abutting plate 432 and the film groove 221 can be increased, the size adjustment of the liquid film is facilitated when the moving plate 43 moves, thereby improving the purity and efficiency.

[0039] As shown in the drawings, Figures 1-9As shown, the purity improving part 4 further comprises a vibrating plate 41; the vibrating plate 41 is arranged in the film groove 221, and the side of the vibrating plate 41 away from the film groove 221 is provided with a plurality of protrusions; the vibrating plate 41 is arranged in the film groove 221 and abuts against the abutting plate 432, so that when the scraper 24 rotates, the baffle 42 will be rubbed, and then the vibration will be transmitted to the vibrating plate 41, and the plurality of protrusions will physically hit the film, thereby increasing the gas-liquid separation efficiency and improving the gas-liquid separation efficiency and purity.

[0040] As shown in the figure, Figures 1-9 The purity improving part 4 further comprises a reset spring 46; one end of the reset spring 46 is connected to the moving plate 43, and the other end is connected to the side wall of the film groove 221; the gas separated by the gas-liquid separator body 1 is first guided to flow into the ventilation space 47 without the reset spring 46, and then flows to the evaporator body 11; the movement of the moving plate 43 is controlled by using the reset spring 46, so as to change the distance between the side wall of the film groove 221 and the abutting plate 432 by adjusting the amount of inert gas, thereby achieving the purpose of adjustment; the dynamic adjustment module obtains the total amount of the gas-liquid mixture, the flow rate of the gas-liquid mixture, the flow rate and flow of the liquid generated after gas-liquid separation, and collects them into the detection actual value; the threshold value is preset in the database, including the liquid flow velocity after gas-liquid separation per unit volume, the temperature required for gas-liquid separation, and the temperature required for the liquid flow generated after gas-liquid separation; the deviation value is obtained by comparing the detection actual value and the preset threshold value, and the amount of inert gas is adjusted according to the deviation value.

[0041] As shown in the figure, Figures 1-9 All the moving parts in the text are sealed, and are equipped with sealing rubber strips.

[0042] Working principle: as shown in the figure, Figures 1-9 When used, the liquid is introduced from the open slot 25, and then the motor is started to make the rotating part 23 rotate, and the six scrapers 24 rotate, and the liquid travels along the path of the film groove 221, so that the liquid forms a film in the film groove 221, and the vibration of the scraper 24 is transmitted to the spiral plate 22 through the baffle 42, and then to the vibrating plate 41, and the plurality of protrusions on the vibrating plate 41 will hit the film, and then the inert gas with heat will enter through one of the one-way valves 45, and the film will be heated, and after gas-liquid separation, the gas will be introduced into another ventilation space 47, and then the inert gas with heat will enter from one of the one-way valves 45 to heat the gas separated by gas-liquid separation, so that the gas and liquid with higher purity are obtained, and can be collected in different positions.

[0043] When the rotating member 23 rotates, the inner rod 31 and the fixed plate 34 do not rotate, and then the internal film formation is completed by the cooperating threaded strips 32, and the gas generated in the process is also introduced into the ventilation space 47.

[0044] When the amount of inert gas is changed, the return spring 46 is stretched, thereby changing the distance between the side wall of the film groove 221 and the abutting plate 432, and when the abutting plate 432 moves, the connecting spring 434 is pressed, thereby completing the inclination angle of the vibrating plate 41 according to the inclination of the film groove 221.

[0045] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as the protection scope of the present application.

Claims

1. An wiped thin-film evaporator characterized by: The gas-liquid separator body (1), the evaporator body (11), the path limiting part (2) and the purity improving part (4) are included. The gas-liquid separator body (1) and the evaporator body (11) are connected by pipelines, the gas-liquid separator body (1) is in vacuum, the moving directions of the gas and the liquid film generated when the gas-liquid separator body (1) separates the gas and the liquid are opposite, the path limiting part (2) is arranged in the gas-liquid separator body (1) and is used for limiting the running path of the liquid film, the path limiting part (2) includes a hollow inner container (21), a spiral plate (22), a film groove (221), a rotating part (23), at least one scraper (24), at least two open grooves (25) and a motor. The inner container (21) is fixedly arranged in the gas-liquid separator body (1), the spiral plate (22) is fixedly arranged in the inner container (21), the film groove (221) is arranged on the spiral plate (22) according to the path of the spiral plate (22), the rotating part (23) is rotatably arranged in the inner container (21), the scraper (24) is fixedly connected to the rotating part (23) and is in sliding cooperation with the spiral plate (22), the two open grooves (25) are respectively arranged at the upper and lower ends of the inner container (21), the motor is arranged outside the gas-liquid separator body (1) and is connected with the rotating part (23), the purity improving part (4) is arranged on the path limiting part (2) and is used for guiding the gas into the path limiting part (2) and adjusting the amount of the liquid passing through the path of the path limiting part (2), the purity improving part (4) includes a baffle (42), a moving plate (43), a partition plate (44), two one-way valves (45) and two ventilation spaces (47). The baffle (42) is arranged in the film groove (221), the moving plate (43) is in sliding cooperation with the baffle (42), the moving plate (43) abuts against the side wall of the film groove (221), the partition plate (44) is fixedly arranged on the moving plate (43) and abuts against the side wall of the film groove (221), the partition plate (44) separates the space between the moving plate (43) and the side wall of the film groove (221) into two ventilation spaces (47), the two one-way valves (45) are respectively arranged in the two ventilation spaces (47) and on the spiral plate (22), and the two ventilation spaces (47) are respectively used for flowing of the inert gas with heat and the gas separated by the gas-liquid separator body (1). The purity improving part (4) further includes a return spring (46), one end of the return spring (46) is connected to the moving plate (43), the other end of the return spring (46) is connected to the side wall of the film groove (221), and the gas separated by the gas-liquid separator body (1) is first guided to flow into the ventilation space (47) without the return spring (46) and then flows to the evaporator body (11). The moving plate (43) includes a connecting plate (431), an abutting plate (432), a moving groove (433) and a connecting spring (434). The adapter plate (431) is in sliding fit with the baffle (42), the abutment plate (432) is in sliding fit with the adapter plate (431), the abutment plate (432) abuts against the side wall of the film groove (221), the moving groove (433) is arranged in the abutment plate (432), the connecting spring (434) is arranged in the moving groove (433) and connected with the adapter plate (431).

2. A wiped thin-film evaporator according to claim 1, characterized in that: The amplification part (3) is arranged on the rotating piece (23), and the amplification part (3) comprises an inner rod (31), a threaded strip (32), a hollow groove (33) and at least one fixing plate (34). The hollow groove (33) is arranged in the rotating piece (23), the threaded strip (32) is fixedly connected to the side wall of the hollow groove (33), the inner rod (31) is fixedly connected to the inner container (21), and the fixing plate (34) is fixedly connected to the inner rod (31) and in sliding fit with the threaded strip (32), so as to increase the space for film formation and improve the gas-liquid separation efficiency. The side, where the film groove (221) abuts against the moving plate (43), is an inclined side; 3. A wiped thin film evaporator according to claim 1 wherein: At the input end of the film groove (221), the side, where the film groove (221) abuts against the moving plate (43), is from thin to thick, and at the output end of the film groove (221), the side, where the film groove (221) abuts against the moving plate (43), is from thick to thin. The purity improving part (4) further comprises a vibrating plate (41).

4. A wiped film evaporator according to claim 1 wherein: The vibrating plate (41) is arranged in the film groove (221), and the side, away from the film groove (221), of the vibrating plate (41) is provided with a plurality of protrusions. ​

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