CN213450978U - Shaft end sealing device of flue gas recirculation fan - Google Patents
Shaft end sealing device of flue gas recirculation fan Download PDFInfo
- Publication number
- CN213450978U CN213450978U CN202022177638.6U CN202022177638U CN213450978U CN 213450978 U CN213450978 U CN 213450978U CN 202022177638 U CN202022177638 U CN 202022177638U CN 213450978 U CN213450978 U CN 213450978U
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- sealing
- motor shaft
- shaft
- flue gas
- end cover
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a shaft end sealing device of a flue gas recirculation fan, which comprises a casing end cover, wherein a shaft hole for a motor shaft to pass through is arranged on the casing end cover, and a gap between the motor shaft and the shaft hole is filled by an annular sealing sleeve sleeved on the motor shaft; one end of the annular sealing sleeve is provided with a flange, and the flange is attached to the end cover of the shell; a plurality of sealing rings are fixedly connected to the motor shaft and distributed along the axial direction of the motor shaft, and a plurality of accommodating grooves for accommodating each sealing ring are formed in the inner wall of the annular sealing sleeve. The annular sealing sleeve is used for sealing the first sealing at the gap and plays a role in filling the gap. The cooperation of sealing ring and holding tank is sealed for the second of clearance department, and the cooperation of sealing ring and holding tank makes the slight clearance between the two become the labyrinth form for gas leakage obtains blocking. The setting of second rubber seal ring can reduce the clearance of sealing ring and holding tank, reduces gas leakage, and is sealed for the third of clearance department. The combination of the three seals solves the problem of air leakage.
Description
Technical Field
The utility model relates to a sealing device especially relates to flue gas recirculation fan axle head sealing device.
Background
The flue gas recirculation fan is specially used for extracting a part of low-temperature flue gas from a flue of an area such as an economizer and the like and sending the part of the low-temperature flue gas into a hearth for flue gas recirculation.
There is the clearance between current flue gas recirculation fan's the casing end cover and the motor shaft, in order to avoid clearance department gas leakage, generally adopt to dredge tooth sealed at present, the sealed effect of this kind of sealed form is not good, and clearance department still can have the gas leakage problem. In order to solve the problem, the application provides a shaft end sealing device of a flue gas recirculation fan.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide flue gas recirculation fan axle head sealing device.
The utility model is realized by the following technical proposal, provides a shaft end sealing device of a flue gas recirculation fan, which comprises a casing end cover, wherein the casing end cover is provided with a shaft hole for a motor shaft to pass through, and the gap between the motor shaft and the shaft hole is filled by an annular sealing sleeve sleeved on the motor shaft; one end of the annular sealing sleeve is provided with a flange, the flange is attached to the shell end cover, and the flange is connected with the shell end cover through a screw; a plurality of sealing rings are fixedly connected to the motor shaft and distributed along the axial direction of the motor shaft, and a plurality of accommodating grooves for accommodating each sealing ring are formed in the inner wall of the annular sealing sleeve.
Preferably, the left side and the right side of each sealing ring are respectively provided with a second rubber sealing gasket, and each second rubber sealing gasket is sleeved on the motor shaft; every sealing ring and two second rubber seal ring that correspond all are located same holding tank.
Preferably, a first rubber sealing gasket is arranged between the annular sealing sleeve and the shaft hole, and the first rubber sealing gasket is sleeved on the annular sealing sleeve.
Preferably, the annular sealing sleeve is formed by buckling two arc-shaped plates, and the contact surfaces of the two arc-shaped plates are fixed by gluing.
The utility model has the advantages that:
the annular sealing sleeve is used for sealing the first sealing at the gap and plays a role in filling the gap. The cooperation of sealing ring and holding tank is sealed for the second of clearance department, and the cooperation of sealing ring and holding tank makes the slight clearance between the two become the labyrinth form for gas leakage obtains blocking. The setting of second rubber seal ring can reduce the clearance of sealing ring and holding tank, reduces gas leakage, and is sealed for the third of clearance department. The combination of the three seals solves the problem of air leakage.
Drawings
FIG. 1 is a schematic structural view of the present invention;
shown in the figure:
1. casing end cover, 2, motor shaft, 3, turn-ups, 4, screw, 5, sealing ring, 6, second rubber seal ring, 7, holding tank, 8, first rubber seal ring, 9, ring seal cover.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1, the utility model discloses a casing end cover 1 is equipped with the shaft hole that supplies motor shaft 2 to pass on casing end cover 1, and the clearance in motor shaft 2 and shaft hole is filled through the annular seal cover 9 of cover on motor shaft 2. One end of the annular sealing sleeve 9 is provided with a flange 3, the flange 3 is attached to the casing end cover 1, and the flange 3 is connected with the casing end cover 1 through a screw 4. A plurality of sealing rings 5 are fixedly connected to the motor shaft 2, the sealing rings 5 are distributed along the axial direction of the motor shaft 2, and a plurality of accommodating grooves 7 for accommodating each sealing ring 5 are formed in the inner wall of the annular sealing sleeve 9.
In this embodiment, a second rubber sealing washer 6 is respectively disposed on the left and right sides of each sealing ring 5, and each second rubber sealing washer 6 is sleeved on the motor shaft 2. Each sealing ring 5 and the two corresponding second rubber sealing gaskets 6 are located in the same accommodating groove 7. The arrangement of the second rubber sealing gasket 6 can reduce the gap between the sealing ring 5 and the accommodating groove 7, and air leakage is reduced.
In this embodiment, in order to improve the sealing effect between the annular sealing sleeve 9 and the shaft hole, a first rubber sealing gasket 8 is arranged between the annular sealing sleeve 9 and the shaft hole, and the first rubber sealing gasket 8 is sleeved on the annular sealing sleeve 9.
In this embodiment, in order to facilitate the assembly, the annular sealing sleeve 9 is formed by two arc-shaped plates in a buckled manner, and the contact surfaces of the two arc-shaped plates are fixed by gluing. During assembly, the motor shaft 2 and the sealing ring 5 are buckled through the two arc-shaped plates, then the two arc-shaped plates are fixedly connected in an adhesive mode, and the flanging 3 and the shell end cover 1 are connected through the screws 4.
When the device is used specifically, the annular sealing sleeve 9 is used for sealing the first sealing at the gap, and plays a role in filling the gap. The cooperation of sealing ring 5 and holding tank 7 is sealed for the second of clearance department, and the cooperation of sealing ring 5 and holding tank 7 makes the slight clearance between the two become the labyrinth form for gas leakage is blocked. The second rubber sealing gasket 6 can reduce the gap between the sealing ring 5 and the accommodating groove 7, reduce air leakage and realize the third sealing at the gap. The combination of the three seals solves the problem of air leakage.
Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.
Claims (4)
1. Shaft end sealing device of flue gas recirculation fan, its characterized in that: the motor shaft sealing device comprises a shell end cover, wherein a shaft hole for a motor shaft to pass through is formed in the shell end cover, and a gap between the motor shaft and the shaft hole is filled through an annular sealing sleeve sleeved on the motor shaft; one end of the annular sealing sleeve is provided with a flange, the flange is attached to the shell end cover, and the flange is connected with the shell end cover through a screw; a plurality of sealing rings are fixedly connected to the motor shaft and distributed along the axial direction of the motor shaft, and a plurality of accommodating grooves for accommodating each sealing ring are formed in the inner wall of the annular sealing sleeve.
2. The flue gas recirculation fan shaft end seal of claim 1, wherein: the left side and the right side of each sealing ring are respectively provided with a second rubber sealing washer, and each second rubber sealing washer is sleeved on the motor shaft; every sealing ring and two second rubber seal ring that correspond all are located same holding tank.
3. The flue gas recirculation fan shaft end seal of claim 2, wherein: a first rubber sealing gasket is arranged between the annular sealing sleeve and the shaft hole, and the first rubber sealing gasket is sleeved on the annular sealing sleeve.
4. The flue gas recirculation fan shaft end seal of claim 3, wherein: the annular sealing sleeve is formed by buckling two arc-shaped plates, and the contact surfaces of the two arc-shaped plates are fixed by gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022177638.6U CN213450978U (en) | 2020-09-28 | 2020-09-28 | Shaft end sealing device of flue gas recirculation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022177638.6U CN213450978U (en) | 2020-09-28 | 2020-09-28 | Shaft end sealing device of flue gas recirculation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213450978U true CN213450978U (en) | 2021-06-15 |
Family
ID=76282577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022177638.6U Active CN213450978U (en) | 2020-09-28 | 2020-09-28 | Shaft end sealing device of flue gas recirculation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213450978U (en) |
-
2020
- 2020-09-28 CN CN202022177638.6U patent/CN213450978U/en active Active
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