CN207687043U - A kind of centrifugal blower sealing device - Google Patents
A kind of centrifugal blower sealing device Download PDFInfo
- Publication number
- CN207687043U CN207687043U CN201721858567.8U CN201721858567U CN207687043U CN 207687043 U CN207687043 U CN 207687043U CN 201721858567 U CN201721858567 U CN 201721858567U CN 207687043 U CN207687043 U CN 207687043U
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- Prior art keywords
- axle sleeve
- toothed projections
- sealing device
- uniformly arranged
- tooth type
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Abstract
The utility model discloses a kind of centrifugal blower sealing devices, including：Axle sleeve, the left side of the axle sleeve is located at depression, the right side of the axle sleeve is located at high-pressure area, the external peripheral surface at the axle sleeve both ends is equipped with labyrinth seal structure, the stage casing of the axle sleeve is equipped with oblique tooth type sealing structure, the labyrinth seal structure is to be uniformly arranged several annular protrusions in an axial direction on the circumferential surface of axle sleeve, the circumferential surface of the annular protrusion is inclined-plane, the oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction several inclined toothed projections, the toothed projections left end downwardly-inclined direction is opposite with the direction that axle sleeve rotates, the rectangular cross-section of the toothed projections, its section of the toothed projections gradually increases from left to right, the axle sleeve is closely sleeved in air blower shaft.The utility model is simple in structure, and easy to process, installation and maintenance can play good sealing effect, reduce production cost, improve economic benefit.
Description
Technical field
The utility model belongs to blower technology field, more particularly to a kind of centrifugal blower sealing device.
Background technology
Shaft one end connection gear of centrifugal blower, the other end pass through stator, and impeller is connected into spiral case inside, due to
There are gap between shaft and stator, centrifugal blower in the running, gas inside gear-box can by shaft and stator it
Between gap to spiral case internal leakage, this had both affected the working efficiency of centrifugal blower, also influence gear-box inside cooling, because
This needs to be sealed gap.Realizing active sealing and passive seal generally are divided into clearance seal, passive seal is close compared with labyrinth
Envelope is common, although the sealing can achieve the purpose that hinder leakage, is fully sealed because it can not reach, in gear-box still
There is a small amount of gas to leak into spiral case, notification number discloses for the patent of invention of CN104847689A pacifies on shaft and stator
The scheme of axial blade is filled, pressure is generated when axial blade operates to prevent the leakage of gear-box internal gas, to realize
The encapsulation scheme of sealing, the patent disclosure can play preferable sealing effect, but axis stream is processed on shaft and stator
Blade, difficulty of processing is big, manufacturing cost is high, and the axial motion of shaft can damage sealing impeller after long time running.
Utility model content
Above-mentioned in order to solve the problems, such as, the utility model proposes a kind of centrifugal blower sealing device, the device knots
Structure is simple, and easy to process, installation and maintenance can play good sealing effect, reduce production cost, improve economic effect
Benefit.
To achieve the goals above, the utility model uses following scheme, including：
The left side of axle sleeve, the axle sleeve is located at depression, and the right side of the axle sleeve is located at high-pressure area, the axle sleeve two
The external peripheral surface at end is equipped with labyrinth seal structure, and the stage casing of the axle sleeve is equipped with oblique tooth type sealing structure.
The labyrinth seal structure is to be uniformly arranged several annular protrusions in an axial direction on the circumferential surface of axle sleeve, the convex annular
The circumferential surface risen is inclined-plane.
The oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction several inclined toothed projections, the toothed projections left end to
Under the rotation of inclined direction and axle sleeve direction on the contrary, the toothed projections rectangular cross-section, its section of the toothed projections by
Left-to-right gradually increases.
The axle sleeve is closely sleeved in air blower shaft.
When assembling, the axle sleeve of the device is sleeved in shaft, then passes through stator together, leaf is connected into spiral case inside
Wheel.
The utility model is simple in structure, and easy to process, installation and maintenance can play good sealing effect, reduce life
Cost is produced, economic benefit is improved.
Description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the schematic diagram that the utility model is sleeved in shaft.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can be more
Add and is clearly understood from, as shown in Figure 1 and Figure 2, the utility model uses following scheme, including：
The left side of axle sleeve 1, the axle sleeve 1 is located at depression, and the right side of the axle sleeve 1 is located at high-pressure area, the axis
The external peripheral surface for covering 1 both ends is equipped with labyrinth seal structure, and the stage casing of the axle sleeve 1 is equipped with oblique tooth type sealing structure.
The labyrinth seal structure is to be uniformly arranged several annular protrusions 2 in an axial direction on the circumferential surface of axle sleeve 1, the annular
The circumferential surface of protrusion 2 is inclined-plane.
The oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction several inclined toothed projections 3,3 left end of toothed projections
Direction that downwardly-inclined direction and axle sleeve 1 rotate on the contrary, the toothed projections 3 rectangular cross-section, 3 its section of toothed projections
Face gradually increases from left to right.
The axle sleeve 1 is closely sleeved in air blower shaft 4.
When assembling, the axle sleeve of the device is sleeved in shaft, then passes through stator together, leaf is connected into spiral case inside
Wheel.
The utility model is simple in structure, and easy to process, installation and maintenance can play good sealing effect, reduce life
Cost is produced, economic benefit is improved.
Claims (4)
1. the left side of a kind of centrifugal blower sealing device, including axle sleeve (1), the axle sleeve (1) is located at depression, described
The right side of axle sleeve (1) is located at high-pressure area, it is characterised in that:It is close that the external peripheral surface at axle sleeve (1) both ends is equipped with labyrinth type
The stage casing of seal structure, the axle sleeve (1) is equipped with oblique tooth type sealing structure.
2. sealing device according to claim 1, it is characterised in that：The labyrinth seal structure is the week in axle sleeve (1)
Several annular protrusions (2) are uniformly arranged on face in an axial direction, the circumferential surface of the annular protrusion (2) is inclined-plane.
3. sealing device according to claim 1, it is characterised in that：The oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction
Several inclined toothed projections (3), the direction of toothed projections (3) the left end downwardly-inclined direction and axle sleeve (1) rotation on the contrary,
The rectangular cross-section of the toothed projections (3), toothed projections (3) its section gradually increase from left to right.
4. according to any one of claims 1 to 3 sealing device, it is characterised in that:The axle sleeve (1) is closely sleeved on drum
On fan shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721858567.8U CN207687043U (en) | 2017-12-27 | 2017-12-27 | A kind of centrifugal blower sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721858567.8U CN207687043U (en) | 2017-12-27 | 2017-12-27 | A kind of centrifugal blower sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207687043U true CN207687043U (en) | 2018-08-03 |
Family
ID=62992300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721858567.8U Active CN207687043U (en) | 2017-12-27 | 2017-12-27 | A kind of centrifugal blower sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207687043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180160A (en) * | 2017-12-27 | 2018-06-19 | 安徽虎渡科达流体机械有限公司 | A kind of centrifugal blower sealing device |
-
2017
- 2017-12-27 CN CN201721858567.8U patent/CN207687043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180160A (en) * | 2017-12-27 | 2018-06-19 | 安徽虎渡科达流体机械有限公司 | A kind of centrifugal blower sealing device |
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| GR01 | Patent grant |