CN219711855U - Axial-flow induced-draft fan blade root seal structure - Google Patents
Axial-flow induced-draft fan blade root seal structure Download PDFInfo
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- CN219711855U CN219711855U CN202320314903.1U CN202320314903U CN219711855U CN 219711855 U CN219711855 U CN 219711855U CN 202320314903 U CN202320314903 U CN 202320314903U CN 219711855 U CN219711855 U CN 219711855U
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- axial
- draft fan
- blade root
- flow induced
- fan blade
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- 238000007789 sealing Methods 0.000 claims abstract description 66
- 239000000428 dust Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a blade root sealing structure of an axial flow induced draft fan, which relates to the technical field of sealing structures and aims to solve the problems that in the prior art, blades of the existing axial flow induced draft fan are directly connected with an output shaft of a motor, dust is easily accumulated at roots connected with the output shaft, the existing blade root sealing structure mainly seals between the blades and the roots, sealing between the output shaft of the motor and the roots of the blades is not enough, dust still easily enters the roots, the blades are not easily pulled out due to excessive dust accumulation when the blades are disassembled, and the using effect is poor. The axial-flow induced-draft fan is characterized in that a first shaft body sealing sleeve and a second shaft body sealing sleeve are respectively arranged on one side of the root of the axial-flow induced-draft fan blade, the first shaft body sealing sleeve and the second shaft body sealing sleeve are fixedly connected with the root of the axial-flow induced-draft fan blade through bolts, and the first shaft body sealing sleeve is fixedly connected with the second shaft body sealing sleeve through bolts.
Description
Technical Field
The utility model relates to the technical field of sealing structures, in particular to a root sealing structure of an axial flow induced draft fan blade.
Background
The axial flow fan is widely used, namely, the air flow in the same direction as the axis of the fan blade, such as an electric fan, an air conditioner external fan is an axial flow type running fan, so the axial flow fan is called as an axial flow type because the air flows parallel to the axial flow of the fan, the axial flow fan is usually used in the occasion with higher flow requirement and lower pressure requirement, the axial flow fan is fixed in position and enables the air to move, the axial flow fan mainly comprises a fan impeller and a shell, the structure is simple, but the data requirement is very high, when the axial flow fan blade is connected with a motor, the root of the axial flow fan blade is directly connected with the output shaft of the motor, and a large amount of dust is easily accumulated at the root of the axial flow fan blade, so the root is protected by a sealing structure;
for example, application publication number CN210371316U, an axial-flow induced-draft fan blade root seal structure includes: the blade root assembly comprises a blade, a blade handle shaft and a blade bolt, wherein the blade handle shaft is arranged at the bottom of the blade, and the blade is fixedly connected with the blade handle shaft through the blade bolt; the first sealing assembly comprises a blade hole seat, an O-shaped sealing ring, a blade handle copper sleeve and a retainer ring, wherein one side of the blade is provided with the blade hole seat;
above-mentioned application is through designing one sealed on blade root petiole excircle, this seal is O type sealing washer and sealing ring, O type sealing washer and sealing ring can effectively prevent dust particle in the flue gas from getting into hub inner chamber pollution petiole axle bearing lubricating oil, corrode the wheel hub component, the combination seal that sealing ring and O type sealing washer are constituteed has wear resistance and elasticity compensation characteristic simultaneously, can make sealing performance reliable, can prolong the life-span of sealing member again, but its seal structure mainly seals between blade and the root, the sealing between motor output shaft and the blade root does not get in place for the dust still gets into the root easily, can be difficult to extract the blade because of the dust gathers too much when dismantling the blade, the result of use is not good, therefore market urgent need develop an axial flow draught fan blade root seal structure and help people solve current problem.
Disclosure of Invention
The utility model aims to provide a root sealing structure of an axial flow induced draft fan blade, which aims to solve the problems that the blades of the existing axial flow induced draft fan provided in the background art are directly connected with an output shaft of a motor, dust is easy to collect at the root connected with the output shaft, the existing root sealing structure of the blade is mainly used for sealing between the blades and the root, the sealing between the output shaft of the motor and the root of the blade is not enough, dust still easily enters the root, the blades are not easy to pull out due to excessive dust collection when the blades are disassembled, and the using effect is poor.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an axial-flow draught fan blade root seal structure, includes axial-flow draught fan blade root, first axis body seal cover and second axis body seal cover are installed respectively to one side of axial-flow draught fan blade root, and first axis body seal cover and second axis body seal cover all pass through bolt and axial-flow draught fan blade root fixed connection, first axis body seal cover passes through bolt fixed connection with second axis body seal cover, the inboard of first axis body seal cover is provided with first sealed sheath, and first sealed sheath sets up to an organic whole structure with first axis body seal cover, the inboard of second axis body seal cover is provided with the sealed sheath of second, and the sealed sheath of second sets up to an organic whole structure with the second axis body seal cover, the inboard of sealed sheath of second and first sealed sheath all is provided with the sealing washer.
Preferably, a shaft sleeve is arranged in the axial flow induced draft fan blade root, and the shaft sleeve and the axial flow induced draft fan blade root are arranged into an integrated structure.
Preferably, a second connecting bolt is installed on the outer side of the shaft sleeve, and the second connecting bolt is in threaded connection with the shaft sleeve.
Preferably, the outside of axial-flow induced-draft fan blade root installs the blade, install first connecting bolt on the preceding terminal surface of axial-flow induced-draft fan blade root, axial-flow induced-draft fan blade root and blade all with first connecting bolt threaded connection.
Preferably, a diversion sealing cover is arranged on the front end face of the root of the blade of the axial flow induced draft fan, and the diversion sealing cover is in threaded connection with the root of the blade of the axial flow induced draft fan.
Preferably, an annular sealing seat is arranged on the front end face of the blade root of the axial flow induced draft fan, and the annular sealing seat is in threaded connection with the blade root of the axial flow induced draft fan.
Compared with the prior art, the utility model has the beneficial effects that:
according to the axial flow induced-draft fan blade, the first shaft body sealing sleeve and the second shaft body sealing sleeve are additionally arranged at the root of the axial flow induced-draft fan blade, the output shaft of the motor is sealed in a contact mode through the first shaft body sealing sleeve and the second shaft body sealing sleeve, the first sealing sheath is arranged in the first shaft body sealing sleeve, the second sealing sheath is arranged in the second shaft body sealing sleeve, the sealing rings are further arranged on the inner sides of the first sealing sheath and the second sealing sheath and are in contact with the output shaft, dust is prevented from entering the root of the axial flow induced-draft fan blade from the position of the output shaft of the motor, sealing work between the root of the axial flow induced-draft fan blade and the output shaft of the motor is achieved, the situation that the blade is not easy to pull out due to excessive dust aggregation is avoided when the blade is detached, and the use effect of the axial flow induced-draft fan blade is improved.
According to the utility model, through the arrangement of the diversion sealing cover, the diversion sealing cover is used for sealing the first connecting bolt and the connection position of the blade and the root of the blade of the axial flow induced draft fan, so that when the induced draft fan utilizes the blade to extract air, dust can diffuse to the periphery through the diversion sealing cover, the effect of protecting the connection position of the blade and the root of the blade of the axial flow induced draft fan is achieved, and the tightness of the root of the blade of the axial flow induced draft fan is further improved.
Drawings
FIG. 1 is a front view of a blade root seal structure of an axial flow induced draft fan of the present utility model;
FIG. 2 is a side view of a blade root seal structure of an axial flow induced draft fan of the present utility model;
FIG. 3 is an elevation view of the axial flow induced draft fan blade root of the present utility model with the seal cowling removed;
fig. 4 is a schematic view of the internal structure of the first shaft body seal sleeve and the second shaft body seal sleeve of the present utility model.
In the figure: 1. blade root of axial flow induced draft fan; 2. a diversion seal cover; 3. a blade; 4. a first shaft body sealing sleeve; 5. a second shaft body sealing sleeve; 6. an annular sealing seat; 7. a first connecting bolt; 8. a shaft sleeve; 9. a second connecting bolt; 10. a first sealing sheath; 11. a second sealing sheath; 12. and (3) sealing rings.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides an axial-flow draught fan blade root seal structure, including axial-flow draught fan blade root 1, first axis body seal cover 4 and second axis body seal cover 5 are installed respectively to one side of axial-flow draught fan blade root 1, and first axis body seal cover 4 and second axis body seal cover 5 all pass through bolt and axial-flow draught fan blade root 1 fixed connection, first axis body seal cover 4 passes through bolt fixed connection with second axis body seal cover 5, the inboard of first axis body seal cover 4 is provided with first sealed sheath 10, and first sealed sheath 10 sets up to an organic whole structure with first axis body seal cover 4, the inboard of second axis body seal cover 5 is provided with second sealed sheath 11, and second sealed sheath 11 sets up to an organic whole structure with second axis body seal cover 5, the inboard of second sealed sheath 11 and first sealed sheath 10 all is provided with sealing washer 12.
During the use, through the setting of first axis body seal cover 4 and second axis body seal cover 5, add first axis body seal cover 4 and second axis body seal cover 5 at axial fan blade root 1, utilize first axis body seal cover 4 and second axis body seal cover 5 to carry out the contact seal to the output shaft of motor, the inside of first axis body seal cover 4 is provided with first sealed sheath 10, the inside of second axis body seal cover 5 is provided with second sealed sheath 11, and the inboard of first sealed sheath 10 and second sealed sheath 11 still is provided with sealing washer 12, utilize sealing washer 12 and output shaft contact, thereby prevent that the dust from getting into axial fan blade root 1 from the output shaft position of motor, play the sealing work between axial fan blade root 1 and the motor output shaft, can not appear being difficult to extract the blade because of the dust gathers too much when dismantling the blade, improve the result of use of this axial fan blade.
Further, the shaft sleeve 8 is arranged in the axial flow induced draft fan blade root 1, the shaft sleeve 8 and the axial flow induced draft fan blade root 1 are arranged into an integrated structure, and the shaft sleeve 8 is used for connecting the axial flow induced draft fan blade root 1 with an output shaft of a motor.
Further, a second connecting bolt 9 is mounted on the outer side of the shaft sleeve 8, the second connecting bolt 9 is in threaded connection with the shaft sleeve 8, and an output shaft of the motor is fixedly connected with the shaft sleeve 8 through the second connecting bolt 9.
Further, the outer side of the blade root 1 of the axial flow induced draft fan is provided with a blade 3, the front end surface of the blade root 1 of the axial flow induced draft fan is provided with a first connecting bolt 7, the blade root 1 and the blade 3 of the axial flow induced draft fan are both in threaded connection with the first connecting bolt 7,
further, install kuppe seal cover 2 on the preceding terminal surface of axial-flow draught fan blade root 1, and kuppe seal cover 2 and axial-flow draught fan blade root 1 threaded connection, the inboard of kuppe seal cover 2 still is provided with joint strip, seals the junction of kuppe seal cover 2 and axial-flow draught fan blade root 1, and kuppe seal cover 2 is used for sealing for the junction of first connecting bolt 7 and blade 3 and axial-flow draught fan blade root 1.
Further, be provided with annular seal seat 6 on the preceding terminal surface of axial compressor draught fan blade root 1, and annular seal seat 6 and axial compressor draught fan blade root 1 threaded connection, annular seal seat 6 can laminate with kuppe seal housing 2 to improve the leakproofness.
Working principle: during the use, axial-flow induced-draft fan blade root 1 utilizes the output shaft of axle sleeve 8 and motor to fix through second connecting bolt 9, then reuse first axis body seal cover 4 and second axis body seal cover 5 to seal the output shaft, use first sealed sheath 10 and second sealed sheath 11 to entangle the output shaft, utilize sealing washer 12 and output shaft laminating simultaneously, thereby play sealed effect, and will be connected fixedly through first connecting bolt 7 between blade 3 and the axial-flow induced-draft fan blade root 1, and seal first connecting bolt 7 through kuppe seal cover 2, thereby further improve the sealed effect of axial-flow induced-draft fan blade root 1.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an axial fan blade root seal structure, includes axial fan blade root (1), its characterized in that: first axis body seal cover (4) and second axis body seal cover (5) are installed respectively to one side of axial fan blade root (1), and first axis body seal cover (4) and second axis body seal cover (5) all pass through bolt and axial fan blade root (1) fixed connection, first axis body seal cover (4) and second axis body seal cover (5) pass through bolt fixed connection, the inboard of first axis body seal cover (4) is provided with first sealed sheath (10), and first sealed sheath (10) and first axis body seal cover (4) set up to an organic whole structure, the inboard of second axis body seal cover (5) is provided with second sealed sheath (11), and second sealed sheath (11) and second axis body seal cover (5) set up to an organic whole structure, the inboard of second sealed sheath (11) and first sealed sheath (10) all is provided with sealing washer (12).
2. The axial flow induced draft fan blade root seal structure according to claim 1, wherein: the inside of axial-flow induced-draft fan blade root (1) is provided with axle sleeve (8), and axle sleeve (8) and axial-flow induced-draft fan blade root (1) set up to an organic whole structure.
3. The axial flow induced draft fan blade root seal structure according to claim 2, wherein: the second connecting bolt (9) is arranged on the outer side of the shaft sleeve (8), and the second connecting bolt (9) is in threaded connection with the shaft sleeve (8).
4. The axial flow induced draft fan blade root seal structure according to claim 1, wherein: the blade (3) is installed in the outside of axial-flow induced-draft fan blade root (1), install first connecting bolt (7) on the preceding terminal surface of axial-flow induced-draft fan blade root (1), axial-flow induced-draft fan blade root (1) and blade (3) all with first connecting bolt (7) threaded connection.
5. The axial flow induced draft fan blade root seal structure according to claim 1, wherein: the front end face of the blade root (1) of the axial flow induced draft fan is provided with a diversion sealing cover (2), and the diversion sealing cover (2) is in threaded connection with the blade root (1) of the axial flow induced draft fan.
6. The axial flow induced draft fan blade root seal structure according to claim 1, wherein: an annular sealing seat (6) is arranged on the front end face of the blade root (1) of the axial flow induced draft fan, and the annular sealing seat (6) is in threaded connection with the blade root (1) of the axial flow induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320314903.1U CN219711855U (en) | 2023-02-27 | 2023-02-27 | Axial-flow induced-draft fan blade root seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320314903.1U CN219711855U (en) | 2023-02-27 | 2023-02-27 | Axial-flow induced-draft fan blade root seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711855U true CN219711855U (en) | 2023-09-19 |
Family
ID=87981882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320314903.1U Active CN219711855U (en) | 2023-02-27 | 2023-02-27 | Axial-flow induced-draft fan blade root seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711855U (en) |
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2023
- 2023-02-27 CN CN202320314903.1U patent/CN219711855U/en active Active
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