CN207393569U - Centrifugal air pump with rectangular seal - Google Patents
Centrifugal air pump with rectangular seal Download PDFInfo
- Publication number
- CN207393569U CN207393569U CN201721299219.1U CN201721299219U CN207393569U CN 207393569 U CN207393569 U CN 207393569U CN 201721299219 U CN201721299219 U CN 201721299219U CN 207393569 U CN207393569 U CN 207393569U
- Authority
- CN
- China
- Prior art keywords
- annular recess
- main shaft
- air pump
- back cabinet
- gasket
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model is related to centrifugal air pump field, existing air pump sealing structure when air pump assembles, needs individually to be assembled mostly, there are assembling process complexity, the shortcomings of assembly precision is more demanding.In view of the above-mentioned problems, the utility model provides a kind of centrifugal air pump with rectangular seal, including：Main shaft, driving section, back cabinet and the front housing set in main shaft one end, several spaced annular recess are equipped in back cabinet inner wall, main shaft depths out of annular recess centre bore, the gasket with annular recess sealing cooperation is equipped on main shaft, gasket is equipped with several spaced circular fins in face of a side surface of annular recess, and the cross section of annular recess and circular fin is rectangle.Annular recess is directly opened on back cabinet inner wall, is integrated with back cabinet, without individually assembling, when air pump assembles, only need to debug the assembling position of gasket so that itself and annular recess fitted seal, easy for assembly, assembly precision requirement is low.
Description
Technical field
The utility model is related to centrifugal air pump fields, are specially a kind of centrifugal air pump with rectangular seal.
Background technology
Labyrinth seal is that several ring packing teeths being arranged in order are set around shaft, is formed between tooth and tooth a series of
Gap shut off with expansion cavity, sealed medium generates throttle effect to reach the mesh of Drain Resistance when by the gap in tortuous labyrinth
's.It needn't be lubricated since there are gaps, no solid contact between the rotor and casing of labyrinth seal, and allow have thermal expansion, adapted to
High temperature, high pressure, the occasion of high speed-frequency, so as to be widely used in the sealing between the shaft end of air pump and grade.
Chinese patent notification number is that the utility model patent of 201206556Y discloses a kind of built-in edge seal device
Vacuum pressure air pump, technical solution are：A kind of vacuum pressure air pump of built-in edge seal device sets in main shaft one end and passes
Dynamic portion, is equipped with the back cabinet and front housing being rotatablely connected with it on main shaft, and back cabinet forms the working chamber of closing with front housing
Body is equipped with air outlet pipe on back cabinet, and air inlet is equipped on front housing, driving wheel is fixed on main shaft, in the working chamber
The quiet wheel with cooperation of moving in turn is equipped in vivo, circular seal receptacle is fixed in back cabinet inner wall, main shaft is from seal receptacle
It is stretched out in heart hole, the gasket with seal receptacle sealing cooperation is fixed on main shaft, the one side of seal receptacle is faced in gasket
Surface is equipped with several spaced main circular fins, and several intervals are equipped on a side surface of the sealed seat surface to gasket
The annular recess of setting, in the main circular fin insertion annular recess and top of its main circular fin and the groove bottom of annular recess
Contact.Labyrinth seal structure in the technical solution includes seal receptacle and gasket, and seal receptacle is arranged on back cabinet inner wall, gasket
Arranged on main shaft, when air pump assembles, then seal receptacle and each self installation of gasket carry out cooperation assembling, there are assembling process to answer again
It is miscellaneous, the shortcomings of assembly precision is more demanding.
Utility model content
For the problems of the prior art, a kind of assembling process of the utility model offer is simple, assembly precision requirement is relatively low
The centrifugal air pump with rectangular seal.
For realization more than technical purpose, the technical solution of the utility model is：A kind of centrifugation with rectangular seal
Formula air pump, including：Main shaft, driving section, back cabinet and the front housing set in main shaft one end, the back cabinet are formed with front housing
The working cavity of closing, the back cabinet are equipped with air outlet pipe, and the front housing is equipped with air inlet, fixes and set on the main shaft
There is driving wheel, the quiet wheel with driving wheel cooperation is fixed in the working cavity, the driving section includes connecting by key and main shaft
The drive connect, the spindle jacket between the drive and back cabinet are connected to bearing block, and the bearing block is fixed on back cabinet
Above and bearing is internally provided with, bearing is equipped between the main shaft and front housing, the Bearing outer is equipped with before being fixedly connected on
Bearing block on casing, in the rear casing inner wall be equipped with several spaced annular recess, the main shaft is from annular recess
Centre bore in depths, on main shaft be equipped with annular recess sealing cooperation gasket, the gasket face annular recess
A side surface be equipped with several spaced circular fins, the cross section of the annular recess and circular fin is rectangle.
From the above, it can be seen that the utility model possesses advantages below：
1. rectangular seal includes annular recess and gasket, annular recess is directly opened on back cabinet inner wall, with
Casing is structure as a whole, and material is saved, without individually assembling；
2. annular recess coordinates with the gasket sealing on main shaft, when air pump assembles, the assembling position of gasket need to be only debugged
It puts so that itself and annular recess fitted seal, easy for assembly, assembly precision requirement is low；
3. the cross section of annular recess and circular fin is rectangle, rectangular seal cooperation, sealing structure is simpler.
As an improvement, the main shaft between the gasket and back cabinet is equipped with adjusting gasket；It is horizontal using adjusting gasket
The position of gasket is adjusted, so that it is fitted close with annular recess.
Preferably, the lateral clearance between the annular recess and circular fin is 0.2mm, axial clearance 0.1mm；
Lateral clearance is different from axial clearance, is more advantageous to forming vortex, reaches preferable sealing effect.
Preferably, the front housing is equipped with oiling passage and oil discharge passage, the oiling passage and oil discharge passage are equal
It is connected with bearing and above bearing；Oiling passage and oil discharge passage are respectively positioned on above bearing, high lubricating effect.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the rectangular seal schematic diagram of the utility model；
Fig. 3 is the oiling passage of the utility model and oil discharge passage structure diagram；
Reference numeral：1. main shaft, 2. driving sections, 3. back cabinets, 4. front housings, 5. air outlet pipes, 6. air inlets, 7. driving wheels,
8. quiet wheel, 9. keys, 10. drives, 11. bearing blocks, 12. bearings, 13. bearings, 14. bearing blocks, 15. annular recess, 16. sealings
Pad, 17. circular fins, 18. adjusting gaskets, 19. oiling passages, 20. oil discharge passages.
Specific embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, a specific embodiment of the utility model is described in detail, but not to the utility model
Claim do any restriction.
As shown in Figure 1, a kind of centrifugal air pump with rectangular seal, including：Main shaft 1 is set in 1 one end of main shaft
Driving section 2, back cabinet 3 and front housing 4, back cabinet 3 and front housing 4 form the working cavity of closing, and back cabinet 3 is equipped with out
Tracheae 5, front housing 4 are equipped with air inlet 6, are fixed with driving wheel 7 on main shaft 1, are fixed in working cavity and match somebody with somebody with driving wheel 7
The quiet wheel 8 closed, driving section 2 include the drive 10 being connected by key 9 with main shaft 1, the main shaft between drive 10 and back cabinet 3
Bearing block 11 is socketed with outside 1, bearing block 11 is fixed on back cabinet and is internally provided with bearing 12, between main shaft 1 and front housing 3
Equipped with bearing 13,13 outside of bearing is equipped with the bearing block 14 being fixedly connected on front housing 4, is equipped in 3 inner wall of back cabinet several
Spaced annular recess 15, the depths out of annular recess 15 centre bore of main shaft 1 is equipped with and annular recess on main shaft 1
The gasket 16 of 15 sealing cooperations, gasket 16 are convex equipped with several spaced ring-types in face of a side surface of annular recess 15
The cross section of rib 17, annular recess 15 and circular fin 17 is rectangle.
As shown in Fig. 2, the structure diagram for rectangular seal.
Annular recess 15 and the sealing cooperation of gasket 16 form the rectangular seal of air pump, and annular recess 15 directly opens up
In on 3 inner wall of back cabinet, save material, be integrated with back cabinet 3, without separately installed when assembling air pump, if debugging and its
The position for the gasket 16 being mounted on main shaft being used cooperatively, installation is simple, quick, and installation accuracy requirement is low.It is annular
The cross section of circular fin 17 on groove 15 and gasket 16 is rectangle, simple in structure.
In order to further improve circular fin in rectangular seal 17 and the sealing fitness of annular recess 15, close
Adjusting gasket 18 is added on main shaft 1 between packing 16 and back cabinet 3, utilizes the position of 18 lateral adjustments gasket 16 of adjusting gasket
It puts, so that circular fin 17 is fitted close with annular recess 15.
In order to obtain preferable sealing effect, the lateral clearance between annular recess 15 and circular fin 17 is set to 0.2mm,
Axial clearance is set to 0.1mm, and lateral clearance is different from axial clearance, is more advantageous to forming vortex, so as to reach preferable sealing
Effect.
As shown in figure 3, in order to which bearing 13 is made to obtain preferable lubricant effect, front housing 4 is equipped with oiling passage 19 and goes out
Oily passage 20, oiling passage 19 and oil discharge passage 20 connect with bearing 13 and positioned at 13 tops of bearing.
In conclusion the utility model has the following advantages：
1. rectangular seal includes annular recess 15 and gasket 16, annular recess 15 is directly opened in back cabinet 3
It on wall, is structure as a whole with back cabinet 3, material is saved, without individually assembling；
2. annular recess 15 coordinates with the sealing of gasket 16 on main shaft 1, when air pump assembles, gasket 16 only need to be debugged
Assembling position is easy for assembly so that itself and 15 fitted seal of annular recess, and assembly precision requirement is low；
3. the cross section of annular recess 15 and circular fin 17 is rectangle, rectangular seal cooperation, sealing structure is simpler
It is single；
4. adjusting gasket 18 is equipped on the main shaft 1 between gasket 16 and back cabinet 3, convenient for adjusting circular fin and ring
The sealing fitness of shape groove；
5. the lateral clearance between annular recess 15 and circular fin 17 is set to 0.2mm, axial clearance is set to 0.1mm, horizontal
Different from axial clearance to gap, sealing effect is good；
6. the oiling passage 19 and oil discharge passage 20 of bearing 13 are respectively positioned on 13 top of bearing, high lubricating effect.
It is understood that above with respect to the specific descriptions of the utility model, it is merely to illustrate the utility model and is not
It is limited to the described technical solution of the utility model embodiment.It it will be understood by those of ordinary skill in the art that still can be with
It modifies to the utility model or equivalent substitution, to reach identical technique effect；As long as meet using needs, all in this reality
Within new protection domain.
Claims (4)
1. a kind of centrifugal air pump with rectangular seal, including：Main shaft (1), the driving section set in main shaft (1) one end
(2), back cabinet (3) and front housing (4), the back cabinet (3) form the working cavity of closing, the rear machine with front housing (4)
Shell (3) is equipped with air outlet pipe (5), and the front housing (4) is equipped with air inlet (6), driving wheel is fixed on the main shaft (1)
(7), the quiet wheel (8) with driving wheel (7) cooperation is fixed in the working cavity, the driving section (2) is included through key (9)
The drive (10) being connected with main shaft (1), the main shaft (1) between the drive (10) and back cabinet (3) are socketed with bearing outside
Seat (11), the bearing block (11) is fixed on back cabinet and is internally provided with bearing (12), in the main shaft (1) and front housing
(4) bearing (13) is equipped between, the bearing block (14) being fixedly connected on front housing, feature are equipped with outside the bearing (13)
It is：Casing (3) inner wall is equipped with several spaced annular recess (15) in the rear, and the main shaft (1) is from annular recess
(15) depths in centre bore is equipped with the gasket (16) with annular recess (15) sealing cooperation, the sealing on main shaft (1)
It pads (16) and is equipped with several spaced circular fins (17), the annular recess in face of a side surface of annular recess (15)
(15) and the cross section of circular fin (17) is rectangle.
2. the centrifugal air pump according to claim 1 with rectangular seal, it is characterised in that：The gasket
(16) main shaft between back cabinet (3) is equipped with adjusting gasket (18).
3. the centrifugal air pump according to claim 1 with rectangular seal, it is characterised in that：The annular recess
(15) lateral clearance between circular fin (17) is 0.2mm, axial clearance 0.1mm.
4. the centrifugal air pump according to claim 1 with rectangular seal, it is characterised in that：On the front housing
Equipped with oiling passage (19) and oil discharge passage (20), the oiling passage (19) and oil discharge passage (20) are connected with bearing (13)
And above bearing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299219.1U CN207393569U (en) | 2017-10-10 | 2017-10-10 | Centrifugal air pump with rectangular seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299219.1U CN207393569U (en) | 2017-10-10 | 2017-10-10 | Centrifugal air pump with rectangular seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393569U true CN207393569U (en) | 2018-05-22 |
Family
ID=62331583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721299219.1U Expired - Fee Related CN207393569U (en) | 2017-10-10 | 2017-10-10 | Centrifugal air pump with rectangular seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448421A (en) * | 2017-10-10 | 2017-12-08 | 美佳德科技（无锡）有限公司 | Centrifugal air pump with rectangular seal |
-
2017
- 2017-10-10 CN CN201721299219.1U patent/CN207393569U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448421A (en) * | 2017-10-10 | 2017-12-08 | 美佳德科技（无锡）有限公司 | Centrifugal air pump with rectangular seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20181010 |