Film evaporator

Abstract

The utility model relates to the technical field of film evaporators, in particular to a film evaporator which comprises an evaporator body, a feeding pipe, a supporting shell, a supporting opening, a supporting plate, a supporting column, a cleaning assembly, a connecting mechanism, a rotating mechanism and a lifting mechanism. The feeding pipe is arranged on the evaporator body in a communicating mode, the supporting shell is fixedly arranged on the evaporator body, the supporting opening is formed between the supporting shell and the evaporator body, the supporting plate is arranged in the supporting shell in a sliding mode, the supporting column is rotationally arranged on the supporting plate, and the supporting column penetrates through the supporting opening and the penetrating opening and extends into the evaporator body. By means of the technical scheme, the problem that impurities attached to the inner wall of the evaporator cannot be thoroughly cleaned in the related technology is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thin film evaporators, in particular to a thin film evaporator. Background Art

[0002] Membrane evaporator has excellent performance, it has a large heat transfer coefficient, high evaporation intensity, short flow time, large operating flexibility, especially suitable for evaporation and concentration of heat-sensitive and high-viscosity materials, degassing and desolventizing, distillation and purification. It can be used as a single distillation equipment as a complete set, and can also be used as a heater in distillation towers, gas stripping towers and other systems. Many excellent properties make it widely used in petrochemical, fine chemical, pharmaceutical, pesticide, daily chemical, food and other industries.

[0003] When the existing thin film evaporator is working, material will remain on its inner wall, which usually needs to be cleaned with a scraper. For example, the publication number CN219462522U is a thin film evaporator with a scraper structure, including an evaporator body, the top outer wall of the evaporator body is fixedly connected to a motor, the top inner wall of the evaporator body is rotatably connected to a rotating shaft, and one end of the motor output shaft passes through the evaporator body and is fixed to the rotating shaft, the bottom inner wall of the evaporator body is fixedly connected to a fixed frame, the top of the fixed frame is rotatably connected to a rotating frame, and the rotating shaft is fixed to the rotating frame, a slide groove is opened inside the rotating frame, a slide rod is slidably connected in the slide groove, and a scraper frame is fixedly connected to one side of the slide rod.

[0004] During use, the above-mentioned prior art cleans the inner wall of the evaporator by moving a longer scraper. However, when the liquid attached to the inner wall in the height direction of the evaporator is uneven and the thickness of the inner wall is different, it is difficult for a whole scraper to clean the material finely, resulting in dead corners in the cleaning of the scraper, causing the material to flow down through the dead corners, resulting in an increase in waste. Utility Model Content

[0005] The utility model provides a thin film evaporator, which solves the problem of incomplete cleaning of impurities attached to the inner wall of the evaporator in the related art.

[0006] The technical solution of the utility model is as follows: A thin film evaporator comprises an evaporator body, a feed pipe, a support shell, a support port, a support plate, a support column, a cleaning assembly, a connecting mechanism, a rotating mechanism and a lifting mechanism;

[0007] The evaporator body is fixedly arranged in a material distribution plate, and a through hole is opened on the material distribution plate;

[0008] The feed pipe is connected and arranged on the evaporator body;

[0009] The support shell is fixedly arranged on the evaporator body;

[0010] The support opening is provided between the support shell and the evaporator body;

[0011] The support plate is slidably disposed in the support housing;

[0012] The support column is rotatably disposed on the support plate, the support column passes through the support opening, and the through opening extends into the evaporator body;

[0013] A plurality of cleaning components are arranged on the periphery of the support column for cleaning the inner wall of the evaporator body;

[0014] The connecting mechanism is disposed between the cleaning assembly and the supporting column, and is used to control the contact between the cleaning assembly and the evaporator body;

[0015] The rotating mechanism is arranged on the supporting plate and is used to control the supporting column to rotate;

[0016] The lifting mechanism is arranged in the supporting shell and is used for controlling the supporting plate to perform reciprocating lifting and lowering.

[0017] Preferably, the cleaning component comprises:

[0018] A cleaning seat, a plurality of cleaning seats are arranged around the support column;

[0019] A cleaning tank, wherein the cleaning tank is disposed on the cleaning seat;

[0020] Scraper, the side walls of the cleaning seat are located on both sides of the cleaning tank and are respectively fixed with two scrapers;

[0021] A cleaning roller is rotatably arranged in the cleaning tank, and cleaning bristles are evenly distributed on the cleaning roller.

[0022] Furthermore, the connecting mechanism comprises:

[0023] Connecting pipes, two of which are provided between the supporting column and each of the cleaning seats, and the connecting pipes are fixedly connected to the supporting column;

[0024] A connecting column, wherein the connecting column is slidably disposed in the connecting tube and is fixedly connected to the cleaning seat;

[0025] A connecting spring is arranged in the connecting tube, and two ends of the connecting spring are respectively fixedly connected to the connecting column and the supporting column.

[0026] Furthermore, the rotating mechanism includes:

[0027] A first annular rack, wherein the first annular rack is fixedly disposed on the support column;

[0028] A first gear, the first gear is rotatably disposed on the support plate, and the first gear is meshed with the first annular rack;

[0029] A power input mechanism is disposed in the support housing and is used to control the first gear to rotate.

[0030] Furthermore, the power input mechanism includes:

[0031] A driving port, the driving port being opened on the first gear;

[0032] A driving column, the driving column is rotatably disposed in the supporting shell, and the driving column passes through the supporting plate and the driving port;

[0033] Wherein, the driving column is slidably connected to the driving port;

[0034] A first motor, wherein the first motor is fixedly disposed on the supporting shell, and an output end of the first motor is fixedly connected to the driving column.

[0035] On the basis of the above scheme, the lifting mechanism comprises:

[0036] A lifting opening, wherein a plurality of the lifting openings are provided on the support plate, and a lead screw nut is fixedly arranged in the lifting opening;

[0037] A reciprocating screw, wherein the support housing is rotatably provided with a plurality of the reciprocating screws;

[0038] Wherein, the reciprocating screw passes through the screw nut;

[0039] A power transmission mechanism is arranged in the support shell and is used to control the multiple reciprocating screws to rotate synchronously.

[0040] On the basis of the above scheme, the power transmission mechanism includes:

[0041] a second gear, the second gear being fixedly disposed on the driving column;

[0042] A third gear, the third gear being fixedly disposed on the lead screw nut;

[0043] A fourth gear is rotatably disposed on the inner top wall of the support shell, and the fourth gear is respectively meshed with the second gear and the third gear.

[0044] On the basis of the above scheme, a driving mechanism is also included, and the driving mechanism is arranged in the supporting column and is used to control the cleaning roller to rotate. The driving mechanism includes:

[0045] a first cavity, wherein the first cavity is opened on the cleaning seat;

[0046] A first bevel gear, wherein the first bevel gear is rotatably disposed on the inner bottom wall of the first cavity, and a connecting rod is fixedly disposed between the first bevel gear and the cleaning roller;

[0047] a second bevel gear, the second bevel gear being rotatably disposed on a side wall of the first cavity;

[0048] A driving pipe, the driving pipe is rotatably disposed on the side wall of the cleaning seat, the driving pipe passes through the side wall of the first cavity and is fixedly connected to the second bevel gear;

[0049] A first rotating mechanism is disposed on the supporting column and is used to control the driving tube to rotate.

[0050] On the basis of the above solution, the first rotating mechanism comprises:

[0051] a second cavity, the second cavity being disposed in the support column;

[0052] a third bevel gear, the third bevel gear being rotatably disposed on a side wall of the second cavity close to the cleaning seat;

[0053] A driving rod, the driving rod is slidably disposed in the driving tube, and the driving rod is fixedly connected to the third bevel gear;

[0054] A second rotating mechanism, wherein the second rotating mechanism is disposed in the second cavity and is used for controlling the third bevel gear to rotate.

[0055] On the basis of the above solution, the second rotating mechanism comprises:

[0056] a fourth bevel gear, the fourth bevel gear being rotatably disposed on the inner top wall of the second cavity;

[0057] A fixing rod, wherein the fixing rod is fixedly disposed between the supporting plate and the fourth bevel gear, and the fixing rod is rotatably connected to the supporting column.

[0058] The working principle and beneficial effects of the utility model are:

[0059] 1. In the utility model, by setting the cleaning component, it is convenient to clean the impurities attached to the inner wall of the evaporator body through the joint action of the scraper and the cleaning bristles, thereby improving the cleaning effect;

[0060] 2. In the utility model, by setting the connection mechanism, it is convenient to press the scraper against the inner wall of the evaporator body under the action of the connection spring, thereby further improving the cleaning effect;

[0061] 3. In the utility model, through the setting of the rotating mechanism, the operation of the first motor can drive the driving column and the first gear to rotate, and at the same time, the meshing of the first gear and the first annular rack drives the supporting column to rotate, so as to drive the scraper and the cleaning roller to move around the supporting column;

[0062] 4. In the utility model, the lifting mechanism is arranged to facilitate the cooperation between the reciprocating screw and the screw nut to drive the support plate and the scraper to lift and lower back and forth, thereby facilitating comprehensive cleaning of the evaporator body, and at the same time shortening the length of the scraper, thereby improving the precision of cleaning;

[0063] 5. In the utility model, through the setting of the driving mechanism, during the rotation of the support column, the driving rod can be driven to rotate through the meshing of the third bevel gear and the fourth bevel gear, and the driving rod and the driving tube can be driven to rotate the driving tube and the second bevel gear at the same time, and then the meshing of the second bevel gear and the first bevel gear can drive the first bevel gear and the cleaning roller to rotate, thereby improving the cleaning effect of the cleaning brush on impurities;

[0064] 6. In the utility model, the longer scraper is replaced by a shorter scraper through the arrangement of the evaporator body, the feed pipe, the support shell, the support port, the support plate, the support column, the cleaning assembly, the connecting mechanism, the rotating mechanism and the lifting mechanism, so that the scraper moves around the support column and is lifted and lowered at the same time to achieve comprehensive cleaning of the inner wall of the evaporator, thereby solving the problem of incomplete cleaning of impurities attached to the inner wall of the evaporator in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0066] Figure 1 It is a schematic diagram of the structure of the utility model;

[0067] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0068] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model from another viewing angle;

[0069] Figure 4 This is a schematic diagram of the cross-sectional structure of the support column of the utility model;

[0070] Figure 5 For this utility model Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0071] In the figure: 1. evaporator body; 2. distribution plate; 3. feed pipe; 4. support shell; 5. support plate; 6. support column; 7. cleaning seat; 8. scraper; 9. cleaning roller; 10. connecting pipe; 11. connecting column; 12. connecting spring; 13. first annular rack; 14. first gear; 15. driving column; 16. first motor; 17. reciprocating screw; 18. second gear; 19. third gear; 20. fourth gear; 21. first bevel gear; 22. second bevel gear; 23. driving pipe; 24. third bevel gear; 25. driving rod; 26. fourth bevel gear; 27. fixing rod. DETAILED DESCRIPTION

[0072] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0073] like Figure 1~Figure 5 As shown, this embodiment proposes a thin film evaporator, including an evaporator body 1, a feed pipe 3, a support shell 4, a support port, a support plate 5, a support column 6, a cleaning component, a connecting mechanism, a rotating mechanism and a lifting mechanism. The evaporator body 1 is fixedly arranged in a distribution plate 2, and a through port is opened on the distribution plate 2. The feed pipe 3 is connected and arranged on the evaporator body 1. The support shell 4 is fixedly arranged on the evaporator body 1, and the support port is opened between the support shell 4 and the evaporator body 1. The support plate 5 is slidably arranged in the support shell 4, and the support column 6 is rotatably arranged on the support plate 5. The column 6 passes through the support opening and the through opening extends into the evaporator body 1. A plurality of cleaning components are arranged around the support column 6 for cleaning the inner wall of the evaporator body 1. A connecting mechanism is arranged between the cleaning component and the support column 6 for controlling the contact between the cleaning component and the evaporator body 1. A rotating mechanism is arranged on the support plate 5 for controlling the rotation of the support column 6. A lifting mechanism is arranged in the support shell 4 for controlling the reciprocating lifting of the support plate 5. A discharge port is opened on the evaporator body 1. A screw conveyor is fixedly arranged on the evaporator body 1, and the screw conveyor is connected to the discharge port.

[0074] Among them, the cleaning component includes a cleaning seat 7, a cleaning groove, a scraper 8 and a cleaning roller 9. Multiple cleaning seats 7 are arranged on the side of the support column 6. The cleaning groove is opened on the cleaning seat 7. The side walls of the cleaning seat 7 are respectively fixed with two scrapers 8 on both sides of the cleaning groove. The cleaning roller 9 is rotatably arranged in the cleaning groove, and cleaning bristles are evenly distributed on the cleaning roller 9.

[0075] Specifically, the rotation of the support column 6 can drive the scraper 8 and the cleaning bristles to move around the support column 6, so that the impurities attached to the inner wall of the evaporator body 1 can be cleaned by the scraper 8 and the cleaning bristles.

[0076] Among them, the connecting mechanism includes a connecting tube 10, a connecting column 11 and a connecting spring 12. Two connecting tubes 10 are arranged between the support column 6 and each cleaning seat 7. The connecting tube 10 is fixedly connected to the support column 6. The connecting column 11 is slidably arranged in the connecting tube 10. The connecting column 11 is fixedly connected to the cleaning seat 7. The connecting spring 12 is arranged in the connecting tube 10. The two ends of the connecting spring 12 are respectively fixedly connected to the connecting column 11 and the support column 6.

[0077] Specifically, under the action of the connecting spring 12 , the scraper 8 and the cleaning bristles can be pressed against the inner wall of the evaporator body 1 , thereby further improving the cleaning effect.

[0078] Among them, the rotating mechanism includes a first annular rack 13, a first gear 14 and a power input mechanism. The first annular rack 13 is fixedly set on the support column 6, and the first gear 14 is rotatably set on the support plate 5. The first gear 14 is meshed with the first annular rack 13. The power input mechanism is set in the support shell 4, which is used to control the rotation of the first gear 14. The power input mechanism includes a driving port, a driving column 15 and a first motor 16. The driving port is opened on the first gear 14, and the driving column 15 is rotatably set in the support shell 4. The driving column 15 passes through the support plate 5 and the driving port, wherein the driving column 15 is slidably connected to the driving port, and the first motor 16 is fixedly set on the support shell 4, and the output end of the first motor 16 is fixedly connected to the driving column 15.

[0079] Specifically, the operator controls the operation of the first motor 16, and the operation of the first motor 16 can drive the driving column 15 and the first gear 14 to rotate. At the same time, the engagement of the first gear 14 with the first annular rack 13 drives the support column 6 to rotate, thereby driving the scraper 8 and the cleaning roller 9 to move around the support column 6.

[0080] Among them, the lifting mechanism includes a lifting port, a reciprocating screw 17 and a power transmission mechanism. A plurality of lifting ports are opened on the support plate 5, and a screw nut is fixedly arranged in the lifting port. A plurality of reciprocating screws 17 are rotatably arranged on the support shell 4, wherein the reciprocating screw 17 passes through the screw nut. The power transmission mechanism is arranged in the support shell 4, and is used to control the plurality of reciprocating screws 17 to rotate synchronously. The power transmission mechanism includes a second gear 18, a third gear 19 and a fourth gear 20. The second gear 18 is fixedly arranged on the driving column 15, the third gear 19 is fixedly arranged on the screw nut, and the fourth gear 20 is rotatably arranged on the inner top wall of the support shell 4, and the fourth gear 20 is respectively meshed with the second gear 18 and the third gear 19.

[0081] Specifically, the rotation of the driving column 15 can drive the second gear 18 to rotate, and at the same time drive the reciprocating screw 17 to rotate through the transmission of the fourth gear 20 and the third gear 19, and then drive the support plate 5 and the scraper 8 to reciprocate and rise and fall through the cooperation of the reciprocating screw 17 and the screw nut, thereby facilitating comprehensive cleaning of the evaporator body 1, and at the same time can shorten the length of the scraper 8, thereby improving the fineness of cleaning.

[0082] Among them, it also includes a driving mechanism, which is arranged in the support column 6 and is used to control the cleaning roller 9 to rotate. The driving mechanism includes a first cavity, a first bevel gear 21, a second bevel gear 22, a driving tube 23 and a first rotating mechanism. The first cavity is opened on the cleaning seat 7, and the first bevel gear 21 is rotatably arranged on the inner bottom wall of the first cavity. A connecting rod is fixedly arranged between the first bevel gear 21 and the cleaning roller 9, and the second bevel gear 22 is rotatably arranged on the side wall of the first cavity. The driving tube 23 is rotatably arranged on the side wall of the cleaning seat 7. The driving tube 23 passes through the side wall of the first cavity and is fixedly connected to the second bevel gear 22. The first rotating mechanism is arranged on the support column 6 and is used to control the driving tube 23 to rotate. The first rotating mechanism includes a second cavity, a third bevel gear 24, a driving rod 25 and a second rotating mechanism. The second cavity is opened in the support column 6. The third bevel gear 24 is rotatably arranged on the side wall of the second cavity close to the cleaning seat 7. The driving rod 25 is slidably arranged in the driving tube 23. The driving rod 25 is fixedly connected to the third bevel gear 24. The second rotating mechanism is arranged in the second cavity for controlling the third bevel gear 24 to rotate. The second rotating mechanism includes a fourth bevel gear 26 and a fixed rod 27. The fourth bevel gear 26 is rotatably arranged on the inner top wall of the second cavity. The fixed rod 27 is fixedly arranged between the support plate 5 and the fourth bevel gear 26. The fixed rod 27 is rotatably connected to the support column 6.

[0083] Specifically, during the rotation of the support column 6, the driving rod 25 can be driven to rotate through the engagement of the third bevel gear 24 and the fourth bevel gear 26, and the driving tube 23 and the second bevel gear 22 can be driven to rotate through the driving rod 25 and the driving tube 23, and then the first bevel gear 21 and the cleaning roller 9 can be driven to rotate through the engagement of the second bevel gear 22 and the first bevel gear 21, thereby improving the cleaning effect of the cleaning bristles on impurities.

[0084] In this embodiment, when in use, the scraper 8 and the cleaning bristles are pressed against the inner wall of the evaporator body 1 under the action of the connecting spring 12, and the operator controls the first motor 16 to work. The operation of the first motor 16 can drive the driving column 15 and the first gear 14 to rotate, and at the same time, the engagement of the first gear 14 with the first annular rack 13 drives the support column 6 to rotate, so that the scraper 8 and the cleaning roller 9 can be driven to move around the support column 6, and at the same time, the rotation of the moving column can drive the second gear 18 to rotate, and at the same time, the reciprocating screw 17 is driven to rotate through the transmission of the fourth gear 20 and the third gear 19, and then the reciprocating screw 17 is driven to rotate. The cooperation with the lead screw nut drives the support plate 5 and the scraper 8 to perform reciprocating lifting and lowering, thereby facilitating comprehensive cleaning of the evaporator body 1. At the same time, the length of the scraper 8 can be shortened, thereby improving the fineness of cleaning. During the rotation of the support column 6, the driving rod 25 can be driven to rotate through the engagement of the third bevel gear 24 and the fourth bevel gear 26. At the same time, the driving rod 25 and the driving tube 23 can drive the driving tube 23 and the second bevel gear 22 to rotate. Then, the engagement of the second bevel gear 22 with the first bevel gear 21 drives the first bevel gear 21 and the cleaning roller 9 to rotate, thereby further improving the cleaning effect of the cleaning brush on impurities.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thin film evaporator, characterized in that: include: An evaporator body (1), wherein a material distribution plate (2) is fixedly arranged inside the evaporator body (1), and a through opening is provided on the material distribution plate (2); A feed pipe (3), the feed pipe (3) being arranged in communication with the evaporator body (1); A supporting shell (4), the supporting shell (4) being fixedly arranged on the evaporator body (1); A support opening, the support opening being provided between the support shell (4) and the evaporator body (1); A support plate (5), the support plate (5) being slidably disposed in the support shell (4); A support column (6), the support column (6) being rotatably disposed on the support plate (5), the support column (6) penetrating the support opening, and the penetrating opening extending into the evaporator body (1); A cleaning component, a plurality of the cleaning components are arranged on the periphery of the support column (6) and are used to clean the inner wall of the evaporator body (1); a connecting mechanism, the connecting mechanism being arranged between the cleaning component and the supporting column (6) and being used for controlling the contact between the cleaning component and the evaporator body (1); a rotating mechanism, the rotating mechanism being arranged on the supporting plate (5) and being used for controlling the supporting column (6) to rotate; A lifting mechanism, the lifting mechanism is arranged in the support shell (4) and is used to control the support plate (5) to perform reciprocating lifting and lowering.

2. A thin film evaporator according to claim 1, characterized in that: The cleaning component comprises: A cleaning seat (7), a plurality of cleaning seats (7) being arranged on the periphery of the support column (6); A cleaning groove, the cleaning groove being provided on the cleaning seat (7); Scraper (8), two scrapers (8) are fixedly arranged on the side walls of the cleaning seat (7) at both sides of the cleaning tank; A cleaning roller (9), the cleaning roller (9) being rotatably disposed in the cleaning groove, and the cleaning roller (9) being evenly distributed with cleaning bristles.

3. A thin film evaporator according to claim 2, characterized in that: The connecting mechanism comprises: A connecting pipe (10), two connecting pipes (10) are provided between the supporting column (6) and each cleaning seat (7), and the connecting pipe (10) is fixedly connected to the supporting column (6); A connecting column (11), the connecting column (11) being slidably disposed in the connecting tube (10), the connecting column (11) being fixedly connected to the cleaning seat (7); A connecting spring (12), wherein the connecting spring (12) is arranged in the connecting tube (10), and two ends of the connecting spring (12) are respectively fixedly connected to the connecting column (11) and the supporting column (6).

4. A thin film evaporator according to claim 3, characterized in that: The rotating mechanism comprises: a first annular rack (13), the first annular rack (13) being fixedly arranged on the support column (6); a first gear (14), the first gear (14) being rotatably disposed on the support plate (5), the first gear (14) being meshed with the first annular rack (13); A power input mechanism is arranged in the supporting shell (4) and is used to control the first gear (14) to rotate.

5. A thin film evaporator according to claim 4, characterized in that: The power input mechanism comprises: a drive port, the drive port being formed on the first gear (14); A driving column (15), the driving column (15) being rotatably disposed in the supporting shell (4), the driving column (15) penetrating the supporting plate (5) and the driving port; Wherein, the driving column (15) is slidably connected to the driving port; A first motor (16), wherein the first motor (16) is fixedly arranged on the supporting housing (4), and an output end of the first motor (16) is fixedly connected to the driving column (15).

6. A thin film evaporator according to claim 5, characterized in that: The lifting mechanism comprises: A lifting opening, wherein a plurality of the lifting openings are provided on the support plate (5), and a lead screw nut is fixedly arranged in the lifting opening; A reciprocating screw (17), wherein the support housing (4) is rotatably provided with a plurality of the reciprocating screws (17); Wherein, the reciprocating screw (17) passes through the screw nut; A power transmission mechanism, the power transmission mechanism is arranged in the support housing (4) and is used to control the multiple reciprocating screws (17) to rotate synchronously.

7. A thin film evaporator according to claim 6, characterized in that: The power transmission mechanism comprises: a second gear (18), the second gear (18) being fixedly arranged on the driving column (15); A third gear (19), the third gear (19) being fixedly arranged on the lead screw nut; A fourth gear (20), the fourth gear (20) being rotatably disposed on the inner top wall of the support shell (4), the fourth gear (20) being meshed with the second gear (18) and the third gear (19) respectively.

8. A thin film evaporator according to claim 7, characterized in that: It also includes a driving mechanism, which is arranged in the supporting column (6) and is used to control the cleaning roller (9) to rotate, and the driving mechanism includes: A first cavity, the first cavity being opened on the cleaning seat (7); a first bevel gear (21), the first bevel gear (21) being rotatably arranged on the inner bottom wall of the first cavity, and a connecting rod being fixedly arranged between the first bevel gear (21) and the cleaning roller (9); a second bevel gear (22), the second bevel gear (22) being rotatably disposed on a side wall of the first cavity; a driving tube (23), the driving tube (23) being rotatably disposed on the side wall of the cleaning seat (7), the driving tube (23) penetrating the side wall of the first cavity and being fixedly connected to the second bevel gear (22); A first rotating mechanism, the first rotating mechanism is arranged on the supporting column (6) and is used to control the driving tube (23) to rotate.

9. A thin film evaporator according to claim 8, characterized in that: The first rotating mechanism comprises: A second cavity, the second cavity being opened in the support column (6); a third bevel gear (24), the third bevel gear (24) being rotatably disposed on a side wall of the second cavity on a side close to the cleaning seat (7); A driving rod (25), the driving rod (25) being slidably disposed in the driving tube (23), the driving rod (25) being fixedly connected to the third bevel gear (24); A second rotating mechanism, the second rotating mechanism is arranged in the second cavity and is used to control the third bevel gear (24) to rotate.

10. A thin film evaporator according to claim 9, characterized in that: The second rotating mechanism comprises: a fourth bevel gear (26), the fourth bevel gear (26) being rotatably disposed on an inner top wall of the second cavity; A fixing rod (27), the fixing rod (27) being fixedly arranged between the support plate (5) and the fourth bevel gear (26), and the fixing rod (27) being rotatably connected to the support column (6).

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