CN209100333U - A kind of sealing structure of magnetic suspension air blower - Google Patents
A kind of sealing structure of magnetic suspension air blower Download PDFInfo
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- CN209100333U CN209100333U CN201821792006.7U CN201821792006U CN209100333U CN 209100333 U CN209100333 U CN 209100333U CN 201821792006 U CN201821792006 U CN 201821792006U CN 209100333 U CN209100333 U CN 209100333U
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- impeller
- sealing
- high speed
- spindle nose
- speed shaft
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Abstract
The utility model discloses a kind of sealing structures of magnetic suspension air blower, motor rear end plate center is provided with circular hole, high speed shaft spindle nose is set in circular hole, impeller one end is connected with high speed shaft spindle nose, the impeller other end is connected with impeller locknut one end, impeller pull bar one end end is set in high speed shaft spindle nose, impeller pull bar is set to impeller and impeller locknut inner hub location, impeller locknut is connect with impeller pull bar spiral, impeller is provided with several sealing air drains close to the end face of high speed shaft spindle nose one side, motor rear end plate is equipped with radial labyrinth sealing close to impeller on one side, radial labyrinth sealing uses flat helical teeth structure, radial labyrinth air-tight movable is set in sealing air drain, the utility model structure is simple, it is compact, it is easy for installation, reduce impeller back leakage rate, prevent high-temperature gas from entering magnetic suspension bearing, radial labyrinth sealing simultaneously can To reduce the axially mounted distance of air blower, critical rotor isolative interval and operation stability are improved.
Description
Technical field
The utility model relates to air blower technical field of sealing technology, specially a kind of sealing structure of magnetic suspension air blower.
Background technique
Magnetic suspension centrifugal blower is one kind using the turbine plant of magnetic suspension bearing.Its primary structure is air vane
Wheel, which is directly installed on, to be clicked on axis elongated end, and rotor is suspended vertically on active magnetic bearing controller.It does not need to increase
Fast device and shaft coupling, realization are directly driven by high-speed motor, the single machine high-speed centrifugal blower adjusted the speed by frequency converter.Such wind
Machine uses integrated design, high-speed motor, frequency converter, magnetic bearing control system and adopts equipped with microprocessor control panel etc.
With integrated design and integrate.Its core is magnetic suspension bearing and magneto technology.
Conventional fan impeller installation procedure is complicated, once installation occurs, it may appear that the case where loosening, general impeller and electricity
Can all there be a distance between machine end plate, it is possible to because high-temperature gas enters Bearing inner, and bearing is damaged, because
This, it would be highly desirable to a kind of improved technology solves the problems, such as this in the presence of the prior art.
Utility model content
The purpose of this utility model is to provide a kind of sealing structure of magnetic suspension air blower, magnetic suspension air blower impeller is straight
It connects and hangs on high speed shaft spindle nose, it is compact-sized, it is easy for installation；The radial labyrinth at impeller back seals, and reduces impeller back
Leakage rate prevents high-temperature gas from entering magnetic suspension bearing, causes overtemperature to damage bearing, while radial labyrinth sealing can reduce drum
The axially mounted distance of blower improves critical rotor isolative interval and operation stability, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the utility model provides the following technical solutions: a kind of sealing structure of magnetic suspension air blower,
It is described including motor rear end plate, high speed shaft spindle nose, impeller, impeller locknut, impeller pull bar, sealing air drain and radial labyrinth sealing
Motor rear end plate center is provided with circular hole, and the high speed shaft spindle nose is set in circular hole, described impeller one end and high speed shaft axis
Head is connected, and the impeller other end is connected with impeller locknut one end, and described impeller pull bar one end end is set to high speed shaft spindle nose
Interior, the impeller pull bar is set to impeller and impeller locknut inner hub location, and the impeller locknut and impeller pull bar spiral connect
It connects, the impeller is provided with several sealing air drains close to the end face of high speed shaft spindle nose one side, and the motor rear end plate is close to impeller one
Face is equipped with radial labyrinth sealing, and the radial labyrinth sealing uses flat helical teeth structure, the radial labyrinth air-tight movable setting
In in sealing air drain.
Preferably, the motor rear end plate surface is provided with impeller slot, and the motor rear end plate is located at impeller slot inner surface
It is provided with annular groove, the radial labyrinth is seal-installed in annular groove.
Preferably, the radial labyrinth sealing includes mounting plate and annular projection, and the mounting plate is ring structure, described
Installation plate surface is evenly arranged with several annular projections.
Preferably, the sealing air drain is annular, and the quantity of the sealing air drain is consistent with the quantity of annular projection, described
Annular projection is movably set in sealing air drain and is not in contact with impeller.
Preferably, the impeller includes impeller bodies and blade, impeller bodies connection high speed shaft spindle nose one end outside
It is movably set in impeller slot, if the impeller bodies are evenly arranged with cured leaf far from connection high speed shaft spindle nose one end outer surface
Piece.
Compared with prior art, the utility model has the beneficial effects that
(1) magnetic suspension air blower impeller is directly hung on high speed shaft spindle nose, compact-sized, easy for installation.
(2) the radial labyrinth sealing at impeller back, reduces impeller back leakage rate, prevents high-temperature gas from entering magnetic suspension
Bearing causes overtemperature to damage bearing.
(3) radial labyrinth sealing simultaneously can reduce the axially mounted distance of air blower, improve critical rotor isolative interval
And operation stability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is that the utility model seals partial schematic diagram at air drain and radial labyrinth sealing.
Fig. 3 is motor rear end plate side cross-sectional structural schematic diagram.
Fig. 4 is motor rear end plate positive structure diagram.
Fig. 5 is that radial labyrinth seals side view cross section structure schematic diagram.
Fig. 6 is that radial labyrinth seals positive structure diagram.
Fig. 7 is impeller side structure schematic view.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, the utility model provides a kind of technical solution: a kind of sealing structure of magnetic suspension air blower, including
Motor rear end plate 1, high speed shaft spindle nose 2, impeller 3, impeller locknut 4, impeller pull bar 5, sealing air drain 6 and radial labyrinth sealing 7, electricity
1 center of machine end plate is provided with circular hole, and high speed shaft spindle nose 2 is set in circular hole, and 3 one end of impeller is connected with high speed shaft spindle nose 2,
3 other end of impeller is connected with 4 one end of impeller locknut, and 5 one end end of impeller pull bar is set in high speed shaft spindle nose 2, impeller pull bar 5
It is set to 4 inner hub location of impeller 3 and impeller locknut, impeller locknut 4 is connect with 5 spiral of impeller pull bar, and impeller 3 is close to high speed
The end face of 2 one side of axis spindle nose is provided with several sealing air drains 6, and motor rear end plate 1 is equipped with radial labyrinth sealing close to impeller 3 on one side
7, radial labyrinth sealing 7 uses flat helical teeth structure, and radial labyrinth sealing 7 is movably set in sealing air drain 6, and sealing air drain 6 is
Annular, the quantity for sealing air drain 6 is consistent with the quantity of annular projection 72, and annular projection 72 is movably set in sealing air drain 6 simultaneously
And it is not in contact with impeller 3.
As shown in Fig. 2, 1 surface of motor rear end plate is provided with impeller slot 11, motor rear end plate 1 is located at 11 inner surface of impeller slot
It is provided with annular groove 12, radial labyrinth sealing 7 is installed in annular groove 12.
As shown in figure 3, radial labyrinth sealing 7 includes mounting plate 71 and annular projection 72, mounting plate 71 is ring structure, peace
71 surface of loading board is evenly arranged with several annular projections 72.
As shown in figure 4, impeller 3 includes impeller bodies 31 and blade 32, impeller bodies 31 are connected outside 2 one end of high speed shaft spindle nose
Side is movably set in impeller slot 11, if impeller bodies 31 are evenly arranged with far from connection 2 one end outer surface of high speed shaft spindle nose
Cured leaf piece 32.
Use principle: impeller 3 is provided with several sealing air drains 6, motor rear end plate 1 close to the end face of 2 one side of high speed shaft spindle nose
Radial labyrinth sealing 7 is installed on one side close to impeller 3, radial labyrinth sealing 7 uses flat helical teeth structure, and radial labyrinth sealing 7 is living
Dynamic to be set in sealing air drain 6, sealing air drain 6 is annular, and the quantity for sealing air drain 6 is consistent with the quantity of annular projection 72, ring
Shape protrusion 72 is movably set in sealing air drain 6 and is not in contact with impeller 3, when impeller 3 rotates, the high-temperature gas of generation
It is blocked by sealing air drain 6 and radial labyrinth sealing 7, prevents high-temperature gas from entering magnetic suspension bearing, cause overtemperature to damage bearing, together
When radial labyrinth sealing can reduce the axially mounted distance of air blower, improve critical rotor isolative interval and operation stability.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of sealing structure of magnetic suspension air blower, it is characterised in that: including motor rear end plate (1), high speed shaft spindle nose (2),
Impeller (3), impeller locknut (4), impeller pull bar (5), sealing air drain (6) and radial labyrinth sealing (7), the motor rear end plate
(1) center is provided with circular hole, and the high speed shaft spindle nose (2) is set in circular hole, described impeller (3) one end and high speed shaft spindle nose
(2) it is connected, impeller (3) other end is connected with impeller locknut (4) one end, and impeller pull bar (5) one end end is set to
In high speed shaft spindle nose (2), the impeller pull bar (5) is set to impeller (3) and impeller locknut (4) inner hub location, the leaf
Wheel locknut (4) is connect with impeller pull bar (5) spiral, and the impeller (3) is provided with several close to the end face of high speed shaft spindle nose (2) one side
It seals air drain (6), the motor rear end plate (1) is equipped with radial labyrinth sealing (7), the radial fan close to impeller (3) on one side
Palace seals (7) and uses flat helical teeth structure, and the radial labyrinth sealing (7) is movably set in sealing air drain (6).
2. a kind of sealing structure of magnetic suspension air blower according to claim 1, it is characterised in that: the motor rear end plate
(1) surface is provided with impeller slot (11), and the motor rear end plate (1) is located at impeller slot (11) inner surface and is provided with annular groove
(12), the radial labyrinth sealing (7) is installed in annular groove (12).
3. a kind of sealing structure of magnetic suspension air blower according to claim 1, it is characterised in that: the radial labyrinth is close
Envelope (7) includes mounting plate (71) and annular projection (72), and the mounting plate (71) is ring structure, mounting plate (71) surface
It is evenly arranged with several annular projections (72).
4. a kind of sealing structure of magnetic suspension air blower according to claim 1, it is characterised in that: the sealing air drain
It (6) is annular, the quantity of sealing air drain (6) is consistent with the quantity of annular projection (72), annular projection (72) activity
It is set in sealing air drain (6) and is not in contact with impeller (3).
5. a kind of sealing structure of magnetic suspension air blower according to claim 1, it is characterised in that: impeller (3) packet
Impeller bodies (31) and blade (32) are included, impeller bodies (31) connection is movably set on the outside of high speed shaft spindle nose (2) one end
In impeller slot (11), the impeller bodies (31) are evenly arranged with several far from connection high speed shaft spindle nose (2) one end outer surface
Blade (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821792006.7U CN209100333U (en) | 2018-11-01 | 2018-11-01 | A kind of sealing structure of magnetic suspension air blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821792006.7U CN209100333U (en) | 2018-11-01 | 2018-11-01 | A kind of sealing structure of magnetic suspension air blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209100333U true CN209100333U (en) | 2019-07-12 |
Family
ID=67157746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821792006.7U Active CN209100333U (en) | 2018-11-01 | 2018-11-01 | A kind of sealing structure of magnetic suspension air blower |
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| Country | Link |
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| CN (1) | CN209100333U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857051A (en) * | 2022-05-23 | 2022-08-05 | 蔡义祥 | Novel ventilation equipment and fan |
-
2018
- 2018-11-01 CN CN201821792006.7U patent/CN209100333U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857051A (en) * | 2022-05-23 | 2022-08-05 | 蔡义祥 | Novel ventilation equipment and fan |
| CN114857051B (en) * | 2022-05-23 | 2024-05-07 | 王洪燕 | Novel ventilation equipment and fan |
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