CN107269576A - The sealing device of centrifugal blower - Google Patents
The sealing device of centrifugal blower Download PDFInfo
- Publication number
- CN107269576A CN107269576A CN201710589798.1A CN201710589798A CN107269576A CN 107269576 A CN107269576 A CN 107269576A CN 201710589798 A CN201710589798 A CN 201710589798A CN 107269576 A CN107269576 A CN 107269576A
- Authority
- CN
- China
- Prior art keywords
- floating
- internal fixation
- fixation plate
- stationary plates
- outer stationary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 238000007667 floating Methods 0.000 claims abstract description 80
- 239000002184 metal Substances 0.000 claims description 5
- 239000002360 explosive Substances 0.000 abstract description 2
- 229910052756 noble gas Inorganic materials 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000002910 solid waste Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of sealing device of centrifugal blower, it includes casing and the main shaft in casing, also include double floating seals, described pair of floating seal includes the floating collar and floating ring, the floating ring is located in the floating collar, the two ends of the casing are provided with outer stationary plates and internal fixation plate, the floating collar is provided with inside the internal fixation plate and outer stationary plates, air cavity is formed between the internal fixation plate and outer stationary plates, uses and is rigidly connected between the internal fixation plate and outer stationary plates and casing.The present invention is respectively provided with outer stationary plates and internal fixation plate at casing two ends using double float ring seal measures, and sets double floating ring seal arrangements inside fixed plate, and sealing property is stable, reliable, long lifespan；Sealed running parameter wider range, can also realize and atmospheric environment is not leaked, suitable inflammable, explosive, poisonous, noble gas medium sealing.
Description
Technical field
The present invention relates to a kind of sealing device of centrifugal blower.
Background technology
In gas conveying industries, centrifugal blower is a kind of equipment generally used.Field is disposed in industrial solid wastes, from
Heart blower fan is even more a kind of essential common apparatus, is also a kind of key equipment during solid waste disposal.In industry
Solid waste disposal field, centrifugal blower is typically all conveying toxic and harmful gas, therefore requires of a relatively high to dynamic sealing.Mesh
Preceding conventional sealing device has packing seal, mechanical seal, labyrinth seal, but packing seal is relatively unreliable, easily causes and lets out
Leakage；Mechanical seal is relatively reliable but cost is high, fault rate is also high, and maintenance cost is big；The general complex equilibrium tubular construction of labyrinth seal,
Have the disadvantage that pumped (conveying) medium can leak outside in fan parking.
The content of the invention
It is an object of the invention to provide a kind of sealing device of centrifugal blower, to solve what is proposed in above-mentioned background technology
Problem.
To achieve the above object, the present invention provides following technical scheme：
A kind of sealing device of centrifugal blower, it include casing and the main shaft in casing, in addition to it is double float it is close
Seal apparatus, described pair of floating seal includes the floating collar and floating ring, and the floating ring is located in the floating collar, the machine
The two ends of shell, which are provided with inside outer stationary plates and internal fixation plate, the internal fixation plate and outer stationary plates, is provided with the floating collar, described interior
Air cavity is formed between fixed plate and outer stationary plates, uses and is rigidly connected between the internal fixation plate and outer stationary plates and casing.
It is preferred that, the floating ring is included inside outside floating ring, inner side floating ring and spring, the floating ring provided with sky
Chamber, is linked together between the outside floating ring and inner side floating ring by spring, and in cavity.
It is preferred that, the floating collar is multiple layer metal ring, and is movably connected on main shaft.
It is preferred that, the floating collar is used with outer stationary plates and internal fixation plate and is tightly connected.
It is preferred that, on the internal fixation plate and outer stationary plates are shaped as built-in reeded disk, the floating collar
It is bolted on internal fixation plate and outer stationary plates.
It is preferred that, the diameter of the outer stationary plates is more than the diameter of internal fixation plate.
The present apparatus is using double float ring sealing structures, and the floating collar uses multiple layer metal ring, and is lived with sealed float ring
It is dynamic to be enclosed on the main shaft of rotation at a high speed, the sealing of a dislocation is formed, leaking for high-temperature flue gas or special gas is prevented.The knot
The sealing device of structure is a kind of mechanical seal of custom design, is tight to adapt to one kind that severe working environment grows up
Gather the mechanical seal mode of type, double float ring seals have strong, wear-resisting contamination resistance, impact resistance, reliable operation, end wear
Automatic compensation, advantages of simple structure and simple.
Double float ring seal properties：One kind of non-contacting seal.Certain gap is kept between floating ring and main shaft, can
It with free floating, but can not be rotated together with main shaft, radial slippage floating can only be made, and protected under gravity with the alignment of shafts
Hold certain bias.When the shaft rotates, from external world's input sealing fluid (frequently with fluid) in main shaft and the gap location of floating ring
Form oil film.Because being acted on by oil film wedge power is produced during main axis, make to possess certain oil film pressure in oil film, make floating ring
Can maintain automatically with axle center " centering " so that gap value is greatly reduced, have effectively achieved leak gas medium close
Envelope.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention is respectively provided with outer stationary plates and internal fixation plate using double float ring seal measures at casing two ends,
And double floating ring seal arrangements are set inside fixed plate, sealing property is stable, reliable, long lifespan；Sealed running parameter model
Enclose wider, can also realize and atmospheric environment is not leaked, suitable inflammable, explosive, poisonous, noble gas medium sealing.
2nd, floating ring of the present invention can be passed through the sealing fluid higher than pressure medium on main shaft in radial floating, annular seal space.
Radial seal is fitted by the spring force and sealed fluid pressure acted on floating ring and reached with bearing shading ring；Axial seal is leaned on
Narrow and small radial clearance between floating ring and axle produces throttling to realize to sealing.
Brief description of the drawings
Fig. 1 is a kind of sealing device sectional side view of centrifugal blower；
Fig. 2 is a kind of sealing device front view of centrifugal blower；
Fig. 3 is the sectional side view of double floating seals.
In figure：In floating ring on the outside of 1- casings, 2- main shafts, 3- internal fixation plates, 4- outer stationary plates, 5- floating rings, 51-, 52-
Side floating ring, 53- springs, 54- sealing fluids, 6- bolts, 7- air cavitys.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to Fig. 1-3, a kind of sealing device of centrifugal blower, it includes casing 1 and the main shaft 2 in casing 1,
Also include double floating seals, described pair of floating seal includes the floating collar and floating ring 5, and the floating ring 5 is located at
In the floating collar, the two ends of the casing 1 are provided with outer stationary plates 4 and internal fixation plate 3, the internal fixation plate 3 and outer stationary plates 4
Portion is provided with the floating collar, and air cavity 7, the internal fixation plate 3 and outer stationary plates 4 are formed between the internal fixation plate 3 and outer stationary plates 4
Use and be rigidly connected between casing 1.
It is preferred that, the floating ring 5 is included in outside floating ring 51, inner side floating ring 52 and spring 53, the floating ring 5
Portion is provided with cavity, is linked together between the outside floating ring 51 and inner side floating ring 52 by spring 53, and installed in sky
Intracavitary.The spring 53 is linked together with floating ring 5 by the way of being hinged.
It is preferred that, the floating collar is multiple layer metal ring, and is movably connected on main shaft 2.
It is preferred that, the floating collar is used with outer stationary plates 4 and internal fixation plate 3 and is tightly connected.
It is preferred that, on the internal fixation plate 3 and outer stationary plates 4 are shaped as built-in reeded disk, the floating bushing
Ring is fixed on internal fixation plate 3 and outer stationary plates 4 by bolt 6.
It is preferred that, the diameter of the outer stationary plates 4 is more than the diameter of internal fixation plate 3.
The present apparatus is using double sealing structures of floating ring 5, and the floating collar uses multiple layer metal ring, and with sealed float ring 5
It is actively set on the main shaft 2 of rotation at a high speed, forms the sealing of a dislocation, prevents leaking for high-temperature flue gas or special gas.
The sealing device of the structure is a kind of mechanical seal of custom design, is one grown up for the severe working environment of adaptation
The mechanical seal mode of compact is planted, double sealings of floating rings 5 have strong, wear-resisting contamination resistance, impact resistance, reliable operation, end
Surface wear is compensated automatically, advantages of simple structure and simple.
Double sealed natures of floating ring 5：One kind of non-contacting seal.Between keeping certain between floating ring 5 and main shaft 2
Gap, can be with free floating, but can not be rotated together with main shaft 2, can only make radial slippage floating, and under gravity with main shaft
2 centers keep certain bias.When main shaft 2 is rotated, from external world's input sealing fluid 54 (frequently with fluid) in main shaft 2 with floating
The gap location formation oil film of ring 5.Acted on because producing oil film wedge power when being rotated by main shaft 2, make to possess certain oil film in oil film
Pressure, enable floating ring 5 maintain automatically with axle center " centering " so that gap value is greatly reduced, have effectively achieved to gas
The sealing of body dielectric leakage.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Claims (6)
1. a kind of sealing device of centrifugal blower, it includes casing (1) and the main shaft (2) in casing (1), and its feature exists
In：Also include double floating seals, described pair of floating seal includes the floating collar and floating ring (5), the floating ring
(5) it is located in the floating collar, the two ends of the casing (1) are provided with outer stationary plates (4) and internal fixation plate (3), the internal fixation plate
(3) the floating collar and inside outer stationary plates (4) is provided with, air cavity (7) is formed between the internal fixation plate (3) and outer stationary plates (4),
Use and be rigidly connected between the internal fixation plate (3) and outer stationary plates (4) and casing (1).
2. the sealing device of centrifugal blower according to claim 1, it is characterised in that：The floating ring (5) includes outside
Cavity, the outside floating ring are provided with inside floating ring (51), inner side floating ring (52) and spring (53), the floating ring (5)
(51) linked together between inner side floating ring (52) by spring (53), and in cavity.
3. the sealing device of centrifugal blower according to claim 1, it is characterised in that：The floating collar is multiple layer metal
Ring, and be movably connected on main shaft (2).
4. the sealing device of centrifugal blower according to claim 1, it is characterised in that：The floating collar and outer stationary plates
(4) use and be tightly connected with internal fixation plate (3).
5. the sealing device of centrifugal blower according to claim 1, it is characterised in that：It is on the internal fixation plate (3) and outer
Fixed plate (4) is shaped as built-in reeded disk, the floating collar by bolt (6) be fixed on internal fixation plate (3) and
On outer stationary plates (4).
6. the sealing device of centrifugal blower according to claim 1, it is characterised in that：The diameter of the outer stationary plates (4)
More than the diameter of internal fixation plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589798.1A CN107269576A (en) | 2017-07-19 | 2017-07-19 | The sealing device of centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589798.1A CN107269576A (en) | 2017-07-19 | 2017-07-19 | The sealing device of centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107269576A true CN107269576A (en) | 2017-10-20 |
Family
ID=60077807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710589798.1A Pending CN107269576A (en) | 2017-07-19 | 2017-07-19 | The sealing device of centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269576A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202646137U (en) * | 2012-03-30 | 2013-01-02 | 江苏乘帆压缩机有限公司 | Shaft-end sealing device of centrifugal type gas compression equipment |
| CN204357762U (en) * | 2014-12-30 | 2015-05-27 | 山东临风科技股份有限公司 | A kind of nitrogen spring seal arrangement for ventilator |
| CN105971924A (en) * | 2016-05-31 | 2016-09-28 | 北京航天动力研究所 | Circumferential sectioned helium sealing device for oxygen turbine pump of hydrogen oxygen engine |
| WO2017119882A1 (en) * | 2016-01-07 | 2017-07-13 | Stein Seal Company | Slurry seal assembly |
| CN207080400U (en) * | 2017-07-19 | 2018-03-09 | 天津中隧通风机有限公司 | A kind of sealing device of centrifugal blower |
-
2017
- 2017-07-19 CN CN201710589798.1A patent/CN107269576A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202646137U (en) * | 2012-03-30 | 2013-01-02 | 江苏乘帆压缩机有限公司 | Shaft-end sealing device of centrifugal type gas compression equipment |
| CN204357762U (en) * | 2014-12-30 | 2015-05-27 | 山东临风科技股份有限公司 | A kind of nitrogen spring seal arrangement for ventilator |
| WO2017119882A1 (en) * | 2016-01-07 | 2017-07-13 | Stein Seal Company | Slurry seal assembly |
| CN105971924A (en) * | 2016-05-31 | 2016-09-28 | 北京航天动力研究所 | Circumferential sectioned helium sealing device for oxygen turbine pump of hydrogen oxygen engine |
| CN207080400U (en) * | 2017-07-19 | 2018-03-09 | 天津中隧通风机有限公司 | A kind of sealing device of centrifugal blower |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |