CN215387611U

CN215387611U - Centrifugal film vacuum evaporation device

Info

Publication number: CN215387611U
Application number: CN202121670773.2U
Authority: CN
Inventors: 严庆东
Original assignee: Shanghai Dachuan Original Delaine Equipment Engineering Co ltd
Current assignee: Shanghai Dachuan Original Delaine Equipment Engineering Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-01-04
Anticipated expiration: 2031-07-21

Abstract

The utility model belongs to the technical field of the distillation technique and specifically relates to a centrifugal thin film vacuum evaporation device is related to, which comprises a housin, wear to establish and be fixed with the fixed axle on the casing, the fixed axle internal rotation is provided with the revolving axle, the one end fixedly connected with rotor in the revolving axle stretches into the casing, the rotor rotates and sets up on the fixed axle, the fixed axle is equipped with steam inlet and steam outlet, be equipped with the steam passageway in the rotor, be equipped with airtight mechanism on the casing, airtight mechanism is including establishing the interior seal assembly in casing and fixed axle fixed connection department inboard, establish the exterior seal subassembly in casing and fixed axle fixed connection department outside and establish the axle seal assembly between fixed axle and revolving axle. The present application has the following effects: the inner sealing assembly keeps sealed at the inner side of the fixed connection position of the shell and the fixed shaft, the outer sealing assembly keeps sealed at the outer side of the fixed connection position of the shell and the fixed shaft, and the shaft sealing assembly keeps sealed between the fixed shaft and the rotating shaft, so that the shell can keep better air tightness.

Description

Centrifugal film vacuum evaporation device

Technical Field

The application relates to the technical field of distillation, in particular to a centrifugal thin film vacuum evaporation device.

Background

Distillation is one of the most important ways to separate different substances by heating. However, the conventional distillation method requires a high distillation temperature and a long material heating time, and the heat-sensitive substances cannot be separated. The centrifugal thin film vacuum evaporation device is used for solving the defects of the conventional distillation mode.

When the film vacuum generating device is used for separating materials, the following characteristics are provided: 1. the operation is carried out under vacuum, the boiling point of the solution can be reduced, and the solution can be evaporated at low temperature; 2. the stock solution is injected into a conical rotor rotating at a high speed and is extruded and diffused under the action of centrifugal force generated by rotation, and an extremely thin flowing liquid film with the thickness of 0.1mm is formed; the residence time of the liquid on the heat-conducting surface is about 1 second; in addition, the liquid is extruded and moved under the action of centrifugal force, so that the structure has unique foaming inhibition effect different from other fixed heat conduction modes; moreover, since there is no member moving on the heat-conducting surface, foreign matter due to abrasion is not mixed in; 3. the rotor is a jacket which is filled with steam for uniform heating; the condensed steam quickly flies away from the heat-conducting surface under the action of centrifugal force, so that the heat can be conducted through the drop-shaped condensation in the heat transfer mode with the highest performance.

To the above-mentioned correlation technique, the inventor thinks that no matter for the evaporation of material, the concentration provides the vacuum environment, still for making the difficult leakage of material in the casing, the casing all should keep better gas tightness, if the gas tightness of casing is not enough, easily causes the separation effect of material relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the airtightness between the rotating shaft and the casing, the present application provides a centrifugal thin film vacuum evaporation apparatus.

The application provides a centrifugal thin film vacuum evaporation device adopts following technical scheme:

a centrifugal film vacuum evaporation device comprises a shell, wherein a fixed shaft penetrates through the shell and is fixed on the shell, a rotating shaft is arranged in the fixed shaft in a rotating mode, a rotor is fixedly connected to one end, extending into the shell, of the rotating shaft, the rotor is rotatably arranged on the fixed shaft, a gap is reserved between the rotating shaft and the fixed shaft, a steam inlet and a steam outlet which are communicated with the gap between the rotating shaft and the fixed shaft are formed in one end, extending out of the shell, of the fixed shaft, a steam channel communicated with the steam inlet and the steam outlet are formed in the rotor, an airtight mechanism is arranged on the shell and comprises an inner sealing assembly, an outer sealing assembly and a shaft sealing assembly, wherein the inner sealing assembly is arranged on the inner side of the fixed connection position of the shell and the fixed shaft, the outer sealing assembly is arranged on the outer side of the fixed connection position of the shell and the fixed shaft, and the shaft sealing assembly is arranged between the fixed shaft and the rotating shaft.

By adopting the technical scheme, the shell is vacuumized, raw material liquid is supplied into the shell, the rotating shaft is driven to rotate in the fixed shaft, and the rotor is driven to rotate; meanwhile, steam is introduced into the steam channel through the steam inlet so that the rotor is uniformly heated, the steam is discharged from the steam outlet after passing through the steam channel, the steam keeps circulating, and the raw material liquid can be evaporated and concentrated on an evaporation panel of the rotor by using centrifugal force; the inner sealing assembly keeps sealed at the inner side of the fixed connection position of the shell and the fixed shaft, the outer sealing assembly keeps sealed at the outer side of the fixed connection position of the shell and the fixed shaft, and the shaft sealing assembly keeps sealed between the fixed shaft and the rotating shaft, so that the shell can keep better air tightness.

Optionally, a mechanical sealing element is rotatably disposed on the fixed shaft, the mechanical sealing element is disposed on the rotor, and the inner sealing assembly includes a first sealing ring disposed between the mechanical sealing element and a side wall of the housing.

By adopting the technical scheme, the mechanical sealing element improves the sealing effect between the rotor and the fixed shaft while improving the smooth rotation of the rotor on the fixed shaft, so that raw material liquid is not easy to leak from the joint of the rotor and the fixed shaft; the first sealing ring is used for enhancing the air tightness between the mechanical sealing element and the side wall of the shell, so that the joint of the shell and the fixed shaft is not easy to generate air leakage, and the shell is favorable for keeping a vacuum environment.

Optionally, the external seal subassembly is including setting firmly the fixing base on the outer end wall of casing, fixing the supporting seat of keeping away from casing one end at the fixing base and establishing the seal receptacle of keeping away from fixing base one end at the supporting seat, the fixed axle is including rotating the big aperture section that sets up on the casing, establishing the small-bore section outside the casing and the coaxial binding off section that sets up between big aperture section and small-bore section, the fixing base cover is established in big aperture section, the supporting seat cover is established in the binding off section, the seal receptacle cover is established in the small-bore section.

Through adopting above-mentioned technical scheme, fixing base, supporting seat and seal receptacle segmentation cover are established outside the fixed axle, have prolonged the sealed route in the fixing base and the casing fixed connection department outside to make the gas tightness in the fixing base and the casing fixed connection department's the outside improve.

Optionally, the supporting seat is provided with an embedded part embedded in the fixed seat, a second sealing ring is arranged between the fixed seat and the supporting seat, and the embedded part is sleeved with the second sealing ring.

By adopting the technical scheme, the scarf joint part enhances the connection effect of the fixed seat and the supporting seat, so that the supporting part is more stable; the second sealing washer is used for strengthening the sealed effect between fixing base and the supporting seat to make the vacuum environment in the casing more stable, and the second sealing washer cover is established on scarf joint portion, makes the difficult drunkenness of second sealing washer, thereby the second sealing washer of being convenient for plays good sealed effect.

Optionally, the rotor is provided with a connecting sleeve, the connecting sleeve is sleeved outside the rotating shaft, the connecting sleeve is arranged on one side, far away from the inner sealing component, of the rotor, the shaft sealing component comprises a sealing inner end, far away from one end of the rotor, of the connecting sleeve and a sealing outer end, arranged at one end, far out of the shell, of the fixing shaft, one end of the rotating shaft is rotatably arranged on the sealing outer end, and the other end of the rotating shaft is fixed in the sealing inner end.

By adopting the technical scheme, the connecting sleeve and the rotor are fixedly connected by the sealing inner end, and meanwhile, the sealing is kept between the connecting sleeve and the rotor, so that the shell is more favorable for keeping vacuum, and raw material liquid is not easy to permeate between the rotating shaft and the fixed shaft; the outer end of the seal is arranged at one end of the rotating shaft and the fixed shaft extending out of the shell to seal the rotating shaft and the fixed shaft, so that the air tightness between the rotating shaft and the fixed shaft is further enhanced.

Optionally, the sealed inner end includes case lid and bearing box, the bearing box can be dismantled with the adapter sleeve and be connected, revolving axle and bearing box fixed connection, be equipped with the third sealing washer between bearing box and the adapter sleeve, the case lid is established in the one end that the adapter sleeve was kept away from to the bearing box, the case lid seals the bearing box, be equipped with the fourth sealing washer between case lid and the bearing box.

By adopting the technical scheme, the rotor is fixedly connected with the rotating shaft through the bearing box and the connecting sleeve, and the third sealing ring is used for enhancing the air tightness between the bearing box and the connecting sleeve; the box cover is used for sealing the bearing box, and the third sealing ring is used for enhancing the air tightness between the box cover and the bearing box, so that the sealing effect of one end, extending into the shell, of the fixed shaft and the rotating shaft is improved, and fluid is not easy to permeate between the fixed shaft and the rotating shaft from one end, extending into the shell, of the fixed shaft and the rotating shaft.

Optionally, the outer end of the seal comprises a seal pressing plate, an oil seal and a seal bushing, the seal pressing plate is arranged at the end of the rotating shaft, the oil seal is arranged at one side of the seal pressing plate close to the shell, the seal bushing is arranged at one side of the oil seal far away from the seal pressing plate, and the seal bushing and the oil seal are both sleeved on the rotating shaft.

By adopting the technical scheme, the sealing bush and the oil seal are used for enhancing the air tightness between the end part of the fixed shaft and the rotating shaft, so that fluid is not easy to leak between the end part of the fixed shaft and the rotating shaft; the sealing pressure plate is used for limiting the sealing bush and the oil seal so that the sealing bush and the oil seal can achieve a sealing effect.

Optionally, the shaft sealing element further comprises a sleeve arranged between the rotating shaft and the fixed shaft, the sleeve keeps a gap with both the rotating shaft and the fixed shaft, and the sleeve is arranged on one side of the sealing bush far away from the oil seal.

By adopting the technical scheme, the sleeve can be used for reducing the frictional resistance between the rotating shaft and the fixed shaft, so that the rotating shaft can rotate more smoothly in the fixed shaft; meanwhile, the sleeve reduces the clearance between the rotating shaft and the fixed shaft, and water films can be formed between the rotating shaft and the sleeve and between the sleeve and the fixed shaft by the steam, so that the rotating shaft and the fixed shaft can be sealed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the inner sealing assembly keeps sealing at the inner side of the fixed connection part of the shell and the fixed shaft, the outer sealing assembly keeps sealing at the outer side of the fixed connection part of the shell and the fixed shaft, and the shaft sealing assembly keeps sealing between the fixed shaft and the rotating shaft, so that the shell can keep better air tightness;

2. by providing the sleeve, the steam can form a water film between the rotating shaft and the sleeve and between the sleeve and the stationary shaft, so that a seal can be formed between the rotating shaft and the stationary shaft.

Drawings

FIG. 1 is a schematic structural diagram of the whole centrifugal thin-film vacuum evaporation apparatus according to the embodiment of the present application;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of section C of FIG. 1;

FIG. 5 is an enlarged view of portion D of FIG. 1;

fig. 6 is an enlarged view of a portion E in fig. 1.

Description of reference numerals: 1. a housing; 2. a rotating shaft; 21. a connecting bond; 3. a fixed shaft; 31. a large-caliber section; 32. a small-caliber section; 33. a mouth-closing section; 34. a steam inlet; 35. a steam outlet; 4. a rotor; 41. an evaporation panel; 42. a steam channel; 43. connecting sleeves; 431. a connecting bolt; 432. a third seal ring; 5. a mechanical seal; 51. a seal bolt; 6. a first seal ring; 7. an outer seal assembly; 71. a fixed seat; 72. a supporting seat; 721. a caulking part; 722. locking the bolt; 723. a second seal ring; 73. a sealing seat; 731. a locking bolt lock; 8. a shaft seal assembly; 81. a sleeve; 82. sealing the inner end; 821. a box cover; 822. a bearing housing; 823. a fourth seal ring; 83. sealing the outer end; 831. sealing the pressure plate; 832. oil sealing; 833. a seal bushing; 834. and (4) screws.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a centrifugal thin film vacuum evaporation device. Referring to fig. 1, the centrifugal thin film vacuum evaporation apparatus includes a housing 1, a rotation shaft 2, a fixed shaft 3, and a rotor 4.

The shell 1 is in a rotary body shape, and the shell 1 is used for providing a vacuum environment for evaporation and concentration. The rotor 4 is rotatably disposed in the casing 1, and the rotor 4 is provided with an evaporation panel 41, so that the raw material liquid in the casing 1 can be evaporated and concentrated on the evaporation panel 41 by the centrifugal force of the rotor 4. One end of the rotating shaft 2 is fixed on the driving motor, the other end of the rotating shaft 2 extends into the shell 1 and is fixedly connected with the rotor 4, the rotating shaft 2 is rotatably arranged on the shell 1, and the driving motor drives the rotor 4 to rotate through the rotating shaft 2. The fixed shaft 3 is fixed on the shell 1, the fixed shaft 3 is sleeved outside the rotating shaft 2, and meanwhile, the rotor 4 is rotatably arranged on the fixed shaft 3. The stationary shaft 3 serves to supply steam to the rotor 4 so that heat is uniformly distributed on the evaporation panel 41 of the rotor 4.

Referring to fig. 1 and 2, the stationary shaft 3 is rotatably provided with a mechanical seal 5, and the mechanical seal 5 is provided on a side of the rotor 4 away from the evaporation panel 41 thereof. The mechanical seal 5 improves the sealing effect between the rotor 4 and the fixed shaft 3 while improving the smoothness of the rotation of the rotor 4 on the fixed shaft 3, so that the raw material liquid is not easy to leak from the joint of the rotor 4 and the fixed shaft 3. The base of the mechanical seal 5 is fixed on the side wall of the housing 1 through a seal bolt 51, the rod part of the seal bolt 51 penetrates through the side wall of the housing 1 to be in threaded connection with the base of the mechanical seal 5, and the head part of the seal bolt 51 is abutted with the outer side wall of the housing 1.

An inner sealing assembly is arranged at the fixed connection position of the shell 1 and the fixed shaft 3 and is arranged on the inner side of the shell 1. The inner sealing assembly comprises a first sealing ring 6, the first sealing ring 6 is arranged between the base of the mechanical sealing element 5 and the side wall of the shell 1, and the first sealing ring 6 is arranged on one side, away from the axis of the fixed shaft 3, of the mechanical sealing element 5. The first sealing ring 6 is used for enhancing the air tightness between the mechanical sealing element 5 and the side wall of the shell 1, so that the air leakage phenomenon is not easy to generate at the joint of the shell 1 and the fixed shaft 3, and the shell 1 is beneficial to maintaining a vacuum environment.

Referring to fig. 1, the stationary shaft 3 includes a large-diameter section 31, a small-diameter section 32, and a constricted section 33, which are integrally formed. The large-caliber section 31 is used for being connected with the shell 1, and the large-caliber section 31 is rotatably arranged on the shell 1; the small-caliber section 32 is used for being fixedly connected with the output end of the driving motor, and the small-caliber section 32 is arranged outside the shell 1; the closing-in section 33 is coaxially arranged between the large-caliber section 31 and the small-caliber section 32, and the closing-in section 33 is used for fixedly connecting the large-caliber section 31 and the small-caliber section 32.

The fixed connection position of the shell 1 and the fixed shaft 3 is also provided with an outer sealing assembly 7, and the outer sealing assembly 7 is arranged on the outer side of the shell 1. The outer sealing assembly 7 comprises a fixed seat 71, a supporting seat 72 and a sealing seat 73, wherein the fixed seat 71 is welded and fixed on the outer side of the end wall of the shell 1, and the fixed seat 71 is sleeved on the large-caliber section 31; the fixing seat 71 is used for fixedly connecting the housing 1 and the fixing shaft 3.

Referring to fig. 1 and 3, the supporting seat 72 is fixed at one end of the fixing seat 71 away from the housing 1, one end of the fixing seat 71 close to the supporting seat 72 is provided with a sunken groove, one end of the supporting seat 72 close to the fixing seat 71 is fixed with an embedding part 721 embedded in the sunken groove, and the embedding part 721 and the fixing seat 71 are locked and fixed through a locking bolt 722. The supporting seat 72 is sleeved outside the closing section 33, and a limit is formed between the supporting seat 72 and the closing section 33, so that the stability of the fixing shaft 3 is further enhanced. Meanwhile, the sinking groove is matched with the scarf joint part 721, so that the connection effect and the air tightness between the supporting seat 72 and the sinking groove are enhanced.

A second sealing ring 723 is arranged between the fixed seat 71 and the supporting seat 72, and the second sealing ring 723 is used for further enhancing the sealing effect between the fixed seat 71 and the supporting seat 72, so that the vacuum environment in the housing 1 is more stable. The second sealing ring 723 is sleeved on the embedded part 721, so that the second sealing ring 723 is not easy to move, and a good sealing effect is achieved.

Referring to fig. 1, a sealing seat 73 is disposed at an end of the supporting seat 72 away from the fixing seat 71, and the sealing seat 73 and the supporting seat 72 are fastened by a stop bolt lock 731, so that the sealing seat 73 can lock and fix both the supporting seat 72 and the fixing seat 71. The sealing seat 73 is sleeved outside the small-caliber section 32, and the sealing seat 73 further prolongs the path of mutual contact between the fixed shaft 3 and the housing 1 in the fixed connection process, so that the sealing effect of the housing 1 is more excellent.

Referring to fig. 1 and 4, the rotation shaft 2 and the fixed shaft 3 are coaxially disposed, both ends of the rotation shaft 2 extend out of the ends of the fixed shaft 3, and a gap is formed between the rotation shaft 2 and the fixed shaft 3. The side wall of one end of the fixed shaft 3 extending out of the shell 1 is provided with a steam inlet 34 and a steam outlet 35, the steam inlet 34 and the steam outlet 35 are both through holes communicated with the inner space of the fixed shaft 3, and the axes of the steam inlet 34 and the steam outlet 35 are both vertical to the axis of the fixed shaft 3. A steam passage 42 is formed in the rotor 4, and the steam passage 42 is communicated with both the steam inlet 34 and the steam outlet 35 through a gap between the fixed shaft 3 and the rotation shaft 2, so that steam can be introduced from the steam inlet 34 and discharged from the steam outlet 35, and the rotor 4 is uniformly heated while passing through the steam passage 42.

A sleeve 81 is arranged between the rotating shaft 2 and the fixed shaft 3, and the sleeve 81 is a circular tube structure with two open ends. The sleeve 81 is spaced apart from both the outer side wall of the rotation shaft 2 and the inner side wall of the fixed shaft 3 to facilitate the circulation of steam. The sleeve 81 can serve to reduce frictional resistance between the rotation shaft 2 and the fixed shaft 3, thereby making the rotation shaft 2 more smoothly rotated within the fixed shaft 3. Meanwhile, the sleeve 81 reduces the gap between the rotation shaft 2 and the stationary shaft 3, and the steam can form water films between the rotation shaft 2 and the sleeve 81 and between the sleeve 81 and the stationary shaft 3, thereby allowing a seal to be formed between the rotation shaft 2 and the stationary shaft 3.

Referring to fig. 1 and 5, a connecting sleeve 43 is fixed on the rotor 4, the connecting sleeve 43 is a circular tube structure sleeved outside the rotating shaft 2, and the connecting sleeve 43 is fixed on a side of the rotor 4 away from the inner seal assembly, i.e. the side of the connecting sleeve 43 where the evaporation panel 41 of the rotor 4 is located. A sealing inner end 82 is arranged between the connecting sleeve 43 and the rotor 4, the sealing inner end 82 is used for fixedly connecting the connecting sleeve 43 and the rotor 4 and keeping the sealing between the connecting sleeve 43 and the rotor 4, so that the vacuum of the shell 1 is kept better, and raw material liquid is not easy to permeate between the rotating shaft 2 and the fixed shaft 3.

The sealed inner end 82 includes a cover 821 and a bearing housing 822. The bearing housing 822 is fixed to one end of the rotation shaft 2 extending into the housing 1, the end of the rotation shaft 2 extends into the bearing housing 822, and the rotation shaft 2 and the bearing housing 822 are fixed by a connection key 21. The bearing housing 822 is detachably connected to the connecting sleeve 43, and in this embodiment, the bearing housing 822 and the connecting sleeve 43 are fixed by the connecting bolt 431. A third sealing ring 432 is arranged between the bearing box 822 and the connecting sleeve 43, and the third sealing ring 432 is used for enhancing the sealing effect between the bearing box 822 and the connecting sleeve 43.

A cover 821 is provided at an end of the bearing housing 822 remote from the connecting sleeve 43, in this embodiment, the cover 821 is screwed to the bearing housing 822, and the cover 821 closes the bearing housing 822. A fourth seal ring 823 is provided between the case cover 821 and the bearing case 822, and the fourth seal ring 823 is used to enhance the sealing effect between the case cover 821 and the bearing case 822, so that gas-liquid two-phase leakage is not easily generated between the connection sleeve 43 and the rotation shaft 2.

Referring to fig. 1 and 6, the end of the fixed shaft 3 extending out of the housing 1 is provided with a sealing outer end 83, and the end of the rotating shaft 2 away from the sealing inner end 82 is rotatably provided on the sealing outer end 83. The seal outer end 83 is provided for enhancing airtightness at the end of the rotation shaft 2 and the stationary shaft 3 protruding outside the casing 1, so that gas-liquid two phases are less likely to leak from the end of the rotation shaft 2 and the stationary shaft 3 protruding outside the casing 1.

The seal outer end 83 includes a seal pressure plate 831, an oil seal 832 and a seal bushing 833. The seal bush 833 is set up between fixed axle 3 and revolving shaft 2, the oil seal 832 is inlaid in the end of the fixed axle 3, and the oil seal 832 locates at one side of the seal bush 833 far away from body 1; the sealing pressure plate 831 is fixed to the end face of the end of the stationary shaft 3 by a screw 834, and the sealing pressure plate 831 is located on the side of the oil seal 832 remote from the seal bushing 833. The sealing pressure plate 831, the oil seal 832 and the sealing bush 833 are all sleeved on the rotating shaft 2. The seal bush 833 and the oil seal 832 serve to enhance airtightness between the end of the stationary shaft 3 and the rotating shaft 2 so that fluid is less likely to leak between the end of the stationary shaft 3 and the rotating shaft 2; the sealing pressure plate 831 is used for limiting the sealing bush 833 and the oil seal 832, so that the sealing bush 833 and the oil seal 832 have a sealing effect.

Referring to fig. 4 to 6, the sleeve 81, the seal inner end 82 and the seal outer end 83 constitute a shaft seal assembly 8 to maintain good airtightness at each joint in the axial direction of the rotating shaft 2 and the fixed shaft 3, thereby preventing fluid leakage from the inside of the housing 1.

The implementation principle of the centrifugal thin film vacuum evaporation device in the embodiment of the application is as follows: during distillation, the shell 1 is kept vacuum, raw material liquid is supplied into the shell 1, then the driving motor is started, the rotating shaft 2 is driven to rotate in the fixed shaft 3 through the driving motor, and the rotor 4 is driven to rotate through the sealed inner end 82 when the rotating shaft 2 rotates. Meanwhile, steam is introduced into the steam passage 42 through the steam inlet 34 so that the rotor 4 is uniformly heated, and the steam is discharged from the steam outlet 35 after passing through the steam passage 42, and the steam keeps circulating. The raw material liquid is evaporated and concentrated by centrifugal force on the evaporation plate 41 of the rotor 4. At this time, the concentrated solution can be sucked out by approaching the pipette to the evaporation panel 41 of the rotor 4. The shell 1, the fixed shaft 3 and the rotating shaft 2 are sealed at a plurality of positions, and a vacuum environment can be kept in the shell 1 to ensure the distillation effect.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a centrifugal thin film vacuum evaporation device, includes casing (1), wear to establish and be fixed with fixed axle (3) on casing (1), fixed axle (3) internal rotation is provided with revolving axle (2), one end fixedly connected with rotor (4) in revolving axle (2) stretched into casing (1), rotor (4) rotate and set up on fixed axle (3), revolving axle (2) and fixed axle (3) keep the clearance, the one end that fixed axle (3) stretched out the casing (1) outside is equipped with steam inlet (34) and steam outlet (35) that are linked together with the clearance between revolving axle (2) and the fixed axle (3), be equipped with in rotor (4) with steam inlet (34) and steam outlet (35) homogeneous phase intercommunication steam channel (42), its characterized in that: the air-tight mechanism is arranged on the shell (1) and comprises an inner sealing assembly arranged on the inner side of the fixed connection position of the shell (1) and the fixed shaft (3), an outer sealing assembly (7) arranged on the outer side of the fixed connection position of the shell (1) and the fixed shaft (3) and a shaft sealing assembly (8) arranged between the fixed shaft (3) and the rotating shaft (2).

2. The centrifugal thin-film vacuum evaporation device of claim 1, wherein: the rotor sealing structure is characterized in that a mechanical sealing element (5) is arranged on the fixed shaft (3) in a rotating mode, the mechanical sealing element (5) is arranged on the rotor (4), and the inner sealing assembly comprises a first sealing ring (6) arranged between the mechanical sealing element (5) and the side wall of the shell (1).

3. The centrifugal thin-film vacuum evaporation device of claim 1, wherein: outer seal subassembly (7) are including setting firmly fixing base (71) on casing (1) outer endwall, fixing and keeping away from supporting seat (72) of casing (1) one end in fixing base (71) and establishing seal receptacle (73) of keeping away from fixing base (71) one end in supporting seat (72), fixed axle (3) are including rotating big aperture section (31) that sets up on casing (1), establishing small-bore section (32) outside casing (1) and coaxial setting in mouth of ending section (33) between big aperture section (31) and small-bore section (32), fixing base (71) cover is established on big aperture section (31), supporting seat (72) cover is established on mouth of ending section (33), seal receptacle (73) cover is established on small-bore section (32).

4. The centrifugal thin-film vacuum evaporation device of claim 3, wherein: the supporting seat (72) is provided with an embedded part (721) embedded in the fixed seat (71), a second sealing ring (723) is arranged between the fixed seat (71) and the supporting seat (72), and the embedded part (721) is sleeved with the second sealing ring (723).

5. The centrifugal thin-film vacuum evaporation device of claim 1, wherein: be equipped with adapter sleeve (43) on rotor (4), adapter sleeve (43) cover is established outside revolving axle (2), and adapter sleeve (43) establish and keep away from one side of interior seal assembly in rotor (4), shaft seal assembly (8) are including establishing sealed inner (82) of keeping away from rotor (4) one end in adapter sleeve (43) and establishing sealed outer end (83) of stretching out casing (1) outer one end in fixed axle (3), the one end of revolving axle (2) is rotated and is set up on sealed outer end (83) and the other end is fixed in sealed inner (82).

6. The centrifugal thin-film vacuum evaporation device of claim 5, wherein: sealed inner (82) include case lid (821) and bearing box (822), bearing box (822) can be dismantled with adapter sleeve (43) and be connected, revolving axle (2) and bearing box (822) fixed connection, be equipped with third sealing washer (432) between bearing box (822) and adapter sleeve (43), the one end of adapter sleeve (43) is kept away from in bearing box (822) is established in case lid (821), case lid (821) seals bearing box (822), be equipped with fourth sealing washer (823) between case lid (821) and bearing box (822).

7. The centrifugal thin-film vacuum evaporation device of claim 5, wherein: sealed outer end (83) are including sealed clamp plate (831), oil blanket (832) and seal bush (833), sealed clamp plate (831) are established on the tip of revolving axle (2), one side that sealed clamp plate (831) are close to casing (1) is established in oil blanket (832), one side that sealed clamp plate (831) were kept away from in oil blanket (832) is established in seal bush (833), seal bush (833) and oil blanket (832) are all established on revolving axle (2) in the cover.

8. The centrifugal thin-film vacuum evaporation device of claim 7, wherein: the shaft sealing assembly (8) further comprises a sleeve (81) arranged between the rotating shaft (2) and the fixed shaft (3), gaps are kept among the sleeve (81), the rotating shaft (2) and the fixed shaft (3), and the sleeve (81) is arranged on one side, away from the oil seal (832), of the sealing bushing (833).