CN214063367U - Labyrinth turbofan sealing device for fan - Google Patents
Labyrinth turbofan sealing device for fan Download PDFInfo
- Publication number
- CN214063367U CN214063367U CN202023039205.0U CN202023039205U CN214063367U CN 214063367 U CN214063367 U CN 214063367U CN 202023039205 U CN202023039205 U CN 202023039205U CN 214063367 U CN214063367 U CN 214063367U
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- turbofan
- labyrinth
- fan
- subassembly
- blower
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a labyrinth turbofan sealing device for fan, including labyrinth dustcoat and blade turbofan subassembly, the labyrinth dustcoat is fixed in on the lateral wall of the fan shell of fan and cover and set up in the fan of fan epaxially, has an accommodation space in the labyrinth dustcoat, and blade turbofan subassembly is fixed in the fan epaxially and is located the accommodation space, and the inner wall of labyrinth dustcoat is equipped with the spacer, and the spacer lies in blade turbofan subassembly one side and is the interval setting with blade turbofan subassembly. The utility model discloses a labyrinth turbofan sealing device's for fan blade turbofan subassembly can be high-speed rotatory and produce inside air vortex along with the fan shaft together for in scurrying hot-blast compressed air return machine outward, and blade turbofan subassembly and spacer form a labyrinth with the wind structure in the inside of labyrinth dustcoat, and it is hot-blast to completely scurrt outward, effectively solves fan shaft hole air leakage and leads to the problem of the too high damage of bearing temperature.
Description
Technical Field
The utility model relates to a sealed technical field especially relates to a labyrinth turbofan sealing device for fan.
Background
The hot air temperature of the circulating fan of the incinerator of the gluing machine exceeds 400 ℃, a certain gap is reserved between the high-speed rotating fan shaft and the shaft hole all the time, the air pressure in the fan is higher than the external air pressure, high-temperature hot air in the fan can outwards flee through the gap, the fan bearing seat is influenced by the outwards fleeing hot air, the temperature of the bearing can be quickly increased and exceed the normal working temperature of the bearing, and if the bearing works at ultrahigh temperature for a long time, lubricating oil can be quickly failed and damaged. As shown in fig. 1, a currently adopted method is to add a wind-blocking disc 202 on a fan shaft 201 of a fan 200 to solve the problem of hot air channeling, but this method cannot well solve the problem of high temperature of a bearing seat, the working temperature of a bearing close to a fan blade 203 is still high, and the problem of bearing damage and shutdown caused by overhigh temperature still exists after long-term operation at more than 100 ℃.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an effectively solve fan shaft hole and leak out and lead to the labyrinth turbofan sealing device for fan of the problem of the high damage of bearing temperature.
In order to achieve the above object, the utility model provides a labyrinth turbofan sealing device for fan, including labyrinth dustcoat and blade turbofan subassembly, the labyrinth dustcoat is fixed in on the lateral wall of the fan shell of fan and cover and set up in the fan of fan is epaxial, a accommodation space has in the labyrinth dustcoat, the blade turbofan subassembly is fixed in the fan is epaxial and is located in the accommodation space, the inner wall of labyrinth dustcoat is equipped with the interval portion, the interval portion is located blade turbofan subassembly one side and with the blade turbofan subassembly is the interval setting.
Preferably, the two blade turbofan assemblies are fixed on the fan shaft at intervals along the axial direction of the fan shaft, and the interval part is located between the two blade turbofan assemblies.
Preferably, the spacer has a ring structure.
Preferably, a gap is formed between the spacing part and the fan shaft.
Preferably, a distance between the spacer and the fan shaft is smaller than a height of the blade turbofan component on the fan shaft.
Preferably, the blade turbofan component comprises a plurality of blades, and the plurality of blades are distributed on the fan shaft at intervals along the circumferential direction of the fan shaft and form a turbofan structure.
Preferably, the fan shaft is sleeved with a mounting part, and the blade is fixed on the mounting part.
Preferably, a gap is formed between the labyrinth housing and the fan shaft.
Preferably, the labyrinth housing is further provided with a high-pressure gas inlet.
Preferably, a flow regulating valve is arranged at the front end of the high-pressure gas inlet.
Compared with the prior art, the utility model discloses a labyrinth turbofan sealing device's for fan blade turbofan subassembly can be high-speed rotatory and produce inside air vortex along with the fan shaft together, and the wind pressure that this air vortex formed is greater than the pressure of hot-blast outside scurrying in the fan for scurrying in the hot-blast compressed air return fan machine outward, and blade turbofan subassembly and spacer form a labyrinth with the inside of labyrinth dustcoat and separate the wind structure, further isolated scurrying hot-blastly outward. Therefore, the utility model discloses a labyrinth turbofan sealing device for fan can effectively solve fan shaft hole and leak out and lead to the problem of the too high damage of bearing temperature.
Drawings
Fig. 1 is a schematic structural view of a conventional fan in which a wind shielding plate is provided on a fan shaft.
Fig. 2 is a schematic structural view of the labyrinth turbofan sealing device for a fan according to the present invention.
Fig. 3 is a sectional view of the labyrinth turbofan sealing device for a fan according to the present invention.
Fig. 4 is a schematic structural diagram of a blade turbofan assembly and a mounting member of the labyrinth turbofan sealing device for a fan according to the present invention.
Fig. 5 is a side view of fig. 2.
Detailed Description
In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.
Please refer to fig. 2 to 4, the labyrinth turbofan sealing device 100 for the fan of the present invention, the labyrinth turbofan sealing device 100 for the fan includes a labyrinth housing 1 and a vane turbofan component 2, the labyrinth housing 1 is fixed on the outer sidewall of the fan housing of the fan 200 and covers the fan shaft 201 of the fan 200, the labyrinth housing 1 has an accommodating space 11 therein, the vane turbofan component 2 is fixed on the fan shaft 201 and located in the accommodating space 11, the inner wall of the labyrinth housing 1 is provided with a spacing portion 12, the spacing portion 12 is located on one side of the vane turbofan component 2 and is spaced from the vane turbofan component 2. In the present embodiment, the two-bladed turbofan 2 is fixed to the fan shaft 201 at an interval in the axial direction of the fan shaft 201, and the spacer 12 is located between the two-bladed turbofan 2. However, the number of the vane turbofan assembly 2 is not limited thereto, for example, the vane turbofan assembly 2 may be one, three or four, etc., and the number of the spacers 12 may be two or three, etc. The blade turbofan 2 can rotate at a high speed along with the fan shaft 201 and generate an inward air vortex, the air pressure formed by the air vortex is greater than the outward flowing pressure of the hot air in the fan 200, so that the outward flowing hot air is pressed back into the fan 200, and the blade turbofan 2 and the partition part 12 form an air isolating structure in the labyrinth housing 1 to further isolate the outward flowing hot air.
Referring to fig. 3, in the present embodiment, the partition portion 12 is in a ring structure to fully ensure the wind-proof effect. A gap is provided between the spacer 12 and the fan shaft 201. The distance value between the spacing part 12 and the fan shaft 201 is smaller than the height value of the blade turbofan component 2 arranged on the fan shaft 201, so that the blade turbofan component 2 and the spacing part 12 form a labyrinth type wind isolation structure in the labyrinth outer cover 1, and the wind isolation effect is further improved. The partition 12 is a partition, but not limited thereto.
Referring to fig. 3 and 4, in the present embodiment, the vane turbofan assembly 2 includes a plurality of vanes 21, and the plurality of vanes 21 are distributed on the fan shaft 201 at intervals along the circumferential direction of the fan shaft 201 to form a turbofan structure. Specifically, a mounting member 3 is sleeved on the fan shaft 201, the mounting member 3 has a mounting cavity mounted on the fan shaft 201, and the blade 21 is fixed on the mounting member 3. However, the structure of the blade turbofan 2 is not limited thereto, and for example, the blade turbofan 2 may also adopt an existing fan structure or a sheet structure.
Referring to fig. 2 and 5, in the present embodiment, a gap 4 is formed between the labyrinth housing 1 and the fan shaft 201, and specifically, the magnitude of the pressure of the inward air vortex generated by the blade turbofan assembly 2 can be changed by changing the magnitude of the gap 4. The labyrinth housing 1 is further provided with a high-pressure gas inlet 13, the front end of the high-pressure gas inlet 13 is provided with a flow regulating valve (not shown), and the high-pressure gas inlet 13 is arranged, so that the pressure of the inward air vortex generated by the blade turbofan component 2 can be further increased, and the wind insulation effect is further improved.
To sum up, the utility model discloses a fan is with labyrinth turbofan sealing device 100's blade turbofan subassembly 2 can be high-speed rotatory and produce inside air vortex along with fan shaft 201 together, and the wind pressure that this air vortex formed is greater than the pressure that the fan 200 internal hot-blast scurries outward for scurry in the hot-blast back pressure fan 200 outward, and blade turbofan subassembly 2 and spacer 12 form a labyrinth at labyrinth dustcoat 1's inside and separate the wind structure, scurry hot-blast outside further isolated. Therefore, the utility model discloses a labyrinth turbofan sealing device 100 for fan can effectively solve the problem that fan 200 shaft hole leaks out and leads to the too high damage of bearing temperature.
The above disclosure is only a preferred embodiment of the present invention, and the scope of the claims of the present invention should not be limited thereby, and all the equivalent changes made in the claims of the present invention are intended to be covered by the present invention.
Claims (10)
1. The utility model provides a labyrinth turbofan sealing device for fan, its characterized in that includes labyrinth dustcoat and blade turbofan subassembly, the labyrinth dustcoat is fixed in on the lateral wall of the fan shell of fan and cover and set up in the fan of fan is epaxial, a accommodation space has in the labyrinth dustcoat, blade turbofan subassembly is fixed in fan is epaxial and is located in the accommodation space, the inner wall of labyrinth dustcoat is equipped with the interval portion, the interval portion be located blade turbofan subassembly one side and with blade turbofan subassembly is the interval and sets up.
2. The labyrinth turbofan seal structure for the blower of claim 1 wherein the two vane turbofan components are fixed to the blower shaft at a spacing in an axial direction of the blower shaft, the spacing portion being located between the two vane turbofan components.
3. The labyrinth turbofan sealing device for the blower of claim 1 wherein the spacer is in an annular configuration.
4. The labyrinth turbofan seal for the blower of claim 1 wherein the spacer is spaced from the blower shaft.
5. The labyrinth turbofan seal for a blower of claim 4 wherein a distance between the spacer and the blower shaft is less than a height of the bladed turbofan assembly disposed on the blower shaft.
6. The labyrinth turbofan sealing device of claim 1 wherein the bladed turbofan module includes a plurality of blades spaced apart along a circumferential direction of the fan shaft and forming a turbofan structure.
7. The labyrinth turbofan seal of claim 6 wherein said fan shaft is sleeved with a mounting member and said blades are secured to said mounting member.
8. The labyrinth turbofan seal for a blower of claim 1 wherein a gap is provided between the labyrinth housing and the blower shaft.
9. The labyrinth turbofan sealing device for the fan according to any one of claims 1 or 8, wherein the labyrinth housing is further provided with a high pressure gas inlet.
10. The labyrinth turbofan sealing device for the blower according to claim 9, wherein a flow regulating valve is provided at a front end of the high pressure gas inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023039205.0U CN214063367U (en) | 2020-12-16 | 2020-12-16 | Labyrinth turbofan sealing device for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023039205.0U CN214063367U (en) | 2020-12-16 | 2020-12-16 | Labyrinth turbofan sealing device for fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063367U true CN214063367U (en) | 2021-08-27 |
Family
ID=77408932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023039205.0U Active CN214063367U (en) | 2020-12-16 | 2020-12-16 | Labyrinth turbofan sealing device for fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063367U (en) |
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2020
- 2020-12-16 CN CN202023039205.0U patent/CN214063367U/en active Active
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