CN208534780U - A kind of centrifugal pump of horizontal axis configuring air hydrodynamic bearing - Google Patents
A kind of centrifugal pump of horizontal axis configuring air hydrodynamic bearing Download PDFInfo
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- CN208534780U CN208534780U CN201820841168.9U CN201820841168U CN208534780U CN 208534780 U CN208534780 U CN 208534780U CN 201820841168 U CN201820841168 U CN 201820841168U CN 208534780 U CN208534780 U CN 208534780U
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- Prior art keywords
- bearing
- air hydrodynamic
- axle journal
- thrust
- foil
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- 239000000314 lubricant Substances 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of centrifugal pump of horizontal axis for configuring air hydrodynamic bearing, including pump case, impeller, mechanical seal, axis and air hydrodynamic bearing；Wherein, air hydrodynamic bearing includes two groups of air hydrodynamic transverse bearings and two groups of air hydrodynamic thrust bearings.Air hydrodynamic bearing is arranged on the outside of mechanical seal, using air as lubricant, bearing capacity is provided for axle journal using the wedge shape compression air film between axle journal and bearing, has many advantages, such as that revolving speed is high, precision is high, be not necessarily to lubricating oil or grease plant, clean cleaning, low power consuming, low noise, long-term operation.
Description
Technical field
The utility model relates to a kind of centrifugal pump of horizontal axis for configuring air hydrodynamic bearing, belong to fluid machinery technical field.
Background technique
Centrifugal pump has the characteristics that revolving speed is high, high-efficient, structure is simple, smooth performance and easy to operate and widely apply
In the chemical industry such as petrochemical industry, coal chemical industry.Extend the service life of centrifugal pump, reduces maintenance capacity, reduces under identical operating condition
Energy consumption, to improve factory economic benefit play the role of it is very big.
Since last century mid-term, gas lubrication technology is rapidly developed, and especially gas bearing is due to its, essence high with revolving speed
It is gradually of interest by every field to spend the advantages that high, the low in energy consumption and service life is long.(viscosity is low and with temperature for build-in attribute based on air
Degree changes small, radiation hardness etc.), air hydrodynamic bearing is in high speed, low friction, high temperature, low temperature and the occasion for having radiativity, it is shown that
Unique superiority；In addition there are also clean clean good characteristics for air hydrodynamic bearing.
Air hydrodynamic bearing is successfully applied to high-speed centrifugal blower by Jin Shidun bearing Science and Technology Ltd.
(CN104179712B " a kind of air suspension centrifugal blower "), and conveying liquid fluid machinery, it is especially most common
Do not have using air hydrodynamic bearing also on centrifugal pump.
Utility model content
The purpose of this utility model is to provide a kind of centrifugal pump of horizontal axis for configuring air hydrodynamic bearing, centrifugal pump configurations
Air hydrodynamic bearing uses air for lubricant medium, simple without lubricating oil or lubricating grease system and air supply system, structure.
The technical solution adopted in the utility model is:
A kind of centrifugal pump of horizontal axis configuring air hydrodynamic bearing, including pump case, impeller, mechanical seal, axis and air hydrodynamic
Bearing；Wherein, air hydrodynamic bearing includes two groups of air hydrodynamic transverse bearings (air hydrodynamic transverse bearing I and air hydrodynamic diameters
To bearing II, two groups of air hydrodynamic transverse bearing structures are identical) and two groups of air hydrodynamic thrust bearings (outer thrust bearing and it is interior only
Thrust bearing, two groups of air hydrodynamic thrust bearing structures are identical)；
The pump case includes the pump housing, pump cover, bearing housing and bearing gland, the pump housing and pump cover, pump cover and bearing housing, bearing housing
It is bolted respectively with bearing gland；
Axis includes six sections of axle journals, respectively axle journal I, axle journal II, axle journal III, axle journal IV, axle journal V and axle journal VI, and common group
At complete axis, the diameter of six sections of axle journals are as follows: I < axle journal of axle journal, II < axle journal, III < axle journal IV, IV > axle journal of axle journal, V > axis
Neck VI；One end of axle journal I is connected through a screw thread with impeller, and impeller is placed in the space that the pump housing and pump cover are formed；II periphery of axle journal
It is mechanical seal outside axle sleeve equipped with axle sleeve, mechanical seal is fixed by sealing gland and pump cover cooperation；Air hydrodynamic transverse bearing
I is mounted at axle journal III, is bolted on bearing housing；Air hydrodynamic transverse bearing II is mounted at axle journal V, is passed through
Bolt is connect with interior thrust shaft block；Interior thrust bearing and outer thrust bearing be mounted on axle journal VI with V junction of axle journal, it is interior
Thrust bearing is fixed on interior thrust shaft block by positioning pin I, and outer thrust bearing is fixed on outer thrust shaft by positioning pin II
It holds on seat, interior thrust shaft block is bolted on bearing housing, and outer thrust shaft block is solid using bolt by bearing gland
It is scheduled on bearing housing；Thrust button is equipped between interior thrust bearing and outer thrust bearing, thrust button is fixed on axis by positioning pin III
On；VI one end of axle journal is stretched out by bearing gland, is equipped with keyway above, for connecting with shaft coupling.
Preferably, the centrifugal pump of horizontal axis can be centrifugal pump of single stage type or centrifugal multistage pump multiple centrifugal pump.
Preferably, the air hydrodynamic transverse bearing is compliant foil air hydrodynamic transverse bearing, including transverse bearing top
Layer paillon, transverse bearing wave foil and bearing block, are followed successively by bearing block, transverse bearing wave foil and transverse bearing top layer foil from outside to inside
The concentric ring that piece is formed, bearing block is equipped with positioning pin IV, for positioning and fixing.Preferably, compliant foil air hydrodynamic diameter
It is 360 ° of compliant foils of complete cycle formula, three watts, four watts, appointing in five watts and eight watts of compliant foil air hydrodynamic transverse bearings to bearing
It anticipates one kind.
Preferably, the air hydrodynamic thrust bearing is compliant foil air hydrodynamic thrust bearing, including bottom plate, thrust shaft
Wave foil and thrust bearing top foil are held, bottom plate is annular shape, and thrust bearing wave foil is uniformly arranged in the circumferential direction on bottom plate, thrust
Bearing top foil is uniformly distributed circumferentially on thrust bearing wave foil, has several solder joints to can be used for positioning and fixing on bottom plate,
When installation, thrust bearing top foil is towards thrust button.Preferably, compliant foil air hydrodynamic thrust bearing is with shaft diameter
Increase, thrust bearing top foil number can be three watts, four watts, five watts, six watts or eight watts.
The course of work: in use, the keyway being arranged on axle journal VI is fixed by key and shaft coupling, shaft coupling again with motor
Axis connection, by motor driving shaft high speed rotation, axis impeller high speed rotation generates centrifugal force.Substance to be centrifuged passes through suction
Entrance (opening of the pump housing in impeller side as shown in figure 1) sucking, by centrifuge separation, from outlet, (pump housing is on impeller as shown in figure 1
The opening of side) discharge.Since axis rotation can generate certain radial force and axial force, while in the state of impeller rotation
Under, the radial force and axial force uneven and generate of load make axis generate radial and axial displacement, at this time air hydrodynamic diameter
Radial carrying is provided to bearing, air hydrodynamic thrust bearing provides axial carrying, so that axis be made to subtract in movement radially, axially
It is small, guarantee the stabilization of axis.
Principle: when motor driving shaft high speed rotation, due to gas dynamic pressure effect, in axis and air hydrodynamic transverse bearing bearing shell
The wedge-shaped air film (as shown in 7-5 in Fig. 3) formed between (top foil), which provides bearing capacity, keeps axle suspension floating；Similarly air hydrodynamic stops
The axial force that air between thrust bearing and thrust button is generated due to air hydrodynamic effect prevents axis from being axially moved.
The utility model has the beneficial effects that
(1) the utility model provides bearing capacity, nothing between axle journal and air hydrodynamic bearing using air hydrodynamic transverse bearing
Physical contact is not necessarily to lubricating oil or lubricating grease system, simplifies the structure of centrifugal pump of horizontal axis；
(2) the utility model uses paillon formula air hydrodynamic bearing, and paillon formula is empty for other opposite aero dynamic bearings
Pneumatic pressure bearing load carrying capacity is higher；
(3) the utility model uses air hydrodynamic bearing, for liquid-bearing, precision height, power consumption high with revolving speed
The advantages that low and service life is long；For aerostatic bearing, aerostatic bearing needs higher supply gas pressure, and it is not necessarily to supply
Gas.When impeller size is identical, higher axis revolving speed can increase centrifugal pump lift and flow；
(4) lubricant medium used in the air hydrodynamic bearing configured by the utility model centrifugal pump of horizontal axis is air,
So it has many advantages, such as completely cleaning, energy high temperature resistant and low temperature, and the structure has preferable lubrication property, effectively increases axis
Hold the service life with centrifugal pump；
(5) air hydrodynamic bearing device be arranged on the outside of mechanical seal, have energy-efficient, low noise, long-term operation,
The advantages that reliable for operation.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the partial enlarged view at the position A in Fig. 1；
Fig. 3 is B-B sectional drawing (compliant foil air hydrodynamic transverse bearing schematic diagram) in Fig. 1；
Fig. 4 is C-C sectional drawing (compliant foil air hydrodynamic thrust bearing schematic diagram) in Fig. 2；
In figure: the 1- pump housing, 2- impeller, 3- pump cover, 4- mechanical seal, 5- sealing gland, 6- axle sleeve, 7- air hydrodynamic are radial
Bearing I, 7-1- positioning pin IV, 7-2- bearing block, 7-3- transverse bearing wave foil, 7-4- transverse bearing top foil, 7-5- air film,
8- bearing housing, 9- axle journal IV, 10- air hydrodynamic transverse bearing II, thrust shaft block in 11-, 12- bearing gland, 13- axle journal
The outer thrust shaft block of VI, 14-, 15- positioning pin II, 16- positioning pin I, 17- thrust button, the outer thrust bearing of 18-, 18-1- solder joint,
18-2- bottom plate, 18-3- thrust bearing wave foil, 18-4- thrust bearing top foil, 19- positioning pin III, thrust bearing in 20-,
21- axle journal V, 22- axle journal III, 23- axle journal II, 24- axle journal I.
Specific embodiment
With reference to embodiment, the utility model is described in further detail.
Embodiment 1
As shown in Figs 1-4, a kind of centrifugal pump of horizontal axis configuring air hydrodynamic bearing, including pump case, impeller 2, mechanical seal
4, axis and air hydrodynamic bearing；Wherein, air hydrodynamic bearing includes two groups of air hydrodynamic transverse bearing (air hydrodynamic transverse bearings
I 7 and air hydrodynamic transverse bearing II 10, two groups of air hydrodynamic transverse bearing structures it is identical) and two groups of air hydrodynamic thrust bearings
(outer thrust bearing 18 and interior thrust bearing 20, two groups of air hydrodynamic thrust bearing structures are identical)；
The pump case includes the pump housing 1, pump cover 3, bearing housing 8 and bearing gland 12, the pump housing 1 and pump cover 3, pump cover 3 and bearing
Case 8, bearing housing 8 and bearing gland 12 are bolted respectively；
Axis includes six sections of axle journals, respectively axle journal I 24, axle journal II 23, axle journal III 22, axle journal IV 9, axle journal V 21 and axle journal
VI 13, collectively constitute complete axis；One end of axle journal I 24 is connected through a screw thread with impeller 2, and impeller 2 is placed in the pump housing 1 and pump cover 3
In the space of formation；II 23 periphery of axle journal is equipped with axle sleeve 6, is mechanical seal 4 outside axle sleeve 6, and mechanical seal 4 passes through sealing gland 5
Cooperate with pump cover 3 and fixes；Air hydrodynamic transverse bearing I 7 is mounted at axle journal III 22, is bolted on bearing housing 8；It is empty
Pneumatic pressure transverse bearing II 10 is mounted at axle journal V 21, is connect by bolt with interior thrust shaft block 11；Interior thrust bearing 20
It is mounted on axle journal VI 13 with outer thrust bearing 18 and is fixed with V 21 junction of axle journal, interior thrust bearing 20 by positioning pin I 16
On interior thrust shaft block 11, outer thrust bearing 18 is fixed on outer thrust shaft block 14 by positioning pin II 15, interior thrust shaft
It holds seat 11 to be bolted on bearing housing 8, outer thrust shaft block 14 is bolted to bearing by bearing gland 12
On case 8；Thrust button 17 is equipped between interior thrust bearing 20 and outer thrust bearing 18, thrust button 17 is fixed on by positioning pin III 19
On axis；VI 13 one end of axle journal is stretched out by bearing gland 12, is equipped with keyway above；The centrifugal pump of horizontal axis is centrifugal pump of single stage type.
Embodiment 2
The present embodiment is substantially the same with 1 structure of embodiment, the difference is that: the diameter of six sections of axle journals are as follows: I 24 < of axle journal
II 23 < axle journal of axle journal, III 22 < axle journal IV 9, IV 9 > axle journal of axle journal, V 21 > axle journal VI 13.
Embodiment 3
The present embodiment is substantially the same with 1 structure of embodiment, the difference is that: the air hydrodynamic transverse bearing is elasticity
Foil air dynamical pressure radial bearing, including transverse bearing top foil 7-4, transverse bearing wave foil 7-3 and bearing block 7-2, from outer
To the interior concentric ring for being followed successively by bearing block 7-2, transverse bearing wave foil 7-3 and transverse bearing top foil 7-4 formation, bearing block 7-
2 are equipped with IV 7-1 of positioning pin.Compliant foil air hydrodynamic transverse bearing is 360 ° of compliant foil air hydrodynamic radial axles of complete cycle formula
It holds；
The air hydrodynamic thrust bearing is compliant foil air hydrodynamic thrust bearing, including bottom plate 18-2, thrust bearing
Wave foil 18-3 and thrust bearing top foil 18-4, bottom plate 18-2 are annular shape, and thrust bearing wave foil 18-3 is circumferentially uniformly set
It sets on bottom plate 18-2, thrust bearing top foil 18-4 is uniformly distributed circumferentially on thrust bearing wave foil 18-3, bottom plate 18-
There are several solder joint 18-1 on 2；When installation, thrust bearing top foil 18-4 is towards thrust button 17.Compliant foil air hydrodynamic stops
Thrust bearing top foil number is three watts.
Embodiment 4
The present embodiment is substantially the same with 3 structure of embodiment, the difference is that: compliant foil air hydrodynamic transverse bearing is
Three watts of compliant foil air hydrodynamic transverse bearings；Compliant foil air hydrodynamic thrust bearing top foil number is four watts.
Embodiment 5
The present embodiment is substantially the same with 3 structure of embodiment, the difference is that: compliant foil air hydrodynamic transverse bearing is
Four watts of compliant foil air hydrodynamic transverse bearings；Compliant foil air hydrodynamic thrust bearing top foil number is five watts.
Embodiment 6
The present embodiment is substantially the same with 3 structure of embodiment, the difference is that: compliant foil air hydrodynamic transverse bearing is
Five watts of compliant foil air hydrodynamic transverse bearings；Compliant foil air hydrodynamic thrust bearing top foil number is six watts.
Embodiment 7
The present embodiment is substantially the same with 3 structure of embodiment, the difference is that: compliant foil air hydrodynamic transverse bearing is
Eight watts of compliant foil air hydrodynamic transverse bearings；Compliant foil air hydrodynamic thrust bearing top foil number is eight watts.
Centrifugal pump of horizontal axis in above embodiments may each be centrifugal multistage pump multiple centrifugal pump.
Specific embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model protects model
It encloses and is not limited to above-described embodiment, within the knowledge of a person skilled in the art, this can also not departed from
Various changes can be made under the premise of utility model objective.
Claims (8)
1. a kind of centrifugal pump of horizontal axis for configuring air hydrodynamic bearing, including pump case, impeller (2), mechanical seal (4), axis and air
Hydrodynamic bearing；Wherein, air hydrodynamic bearing include two groups of air hydrodynamic transverse bearings and two groups of air hydrodynamic thrust bearings, two groups
Air hydrodynamic transverse bearing structure is identical, respectively air hydrodynamic transverse bearing I (7) and air hydrodynamic transverse bearing II (10),
Two groups of air hydrodynamic thrust bearing structures are identical, respectively outer thrust bearing (18) and interior thrust bearing (20)；
The pump case includes the pump housing (1), pump cover (3), bearing housing (8) and bearing gland (12), the pump housing (1) and pump cover (3), pump cover
(3) it is bolted respectively with bearing housing (8), bearing housing (8) and bearing gland (12)；
Axis includes six sections of axle journals, respectively axle journal I (24), axle journal II (23), axle journal III (22), axle journal IV (9), axle journal V (21)
With axle journal VI (13), complete axis is collectively constituted；One end of axle journal I (24) is connect with impeller (2)；Axle journal II (23) periphery is equipped with
Axle sleeve (6), axle sleeve (6) are mechanical seal (4) outside, and mechanical seal (4) is fixed by sealing gland (5) and pump cover (3) cooperation；It is empty
Pneumatic pressure transverse bearing I (7) is mounted at axle journal III (22), is bolted on bearing housing (8)；Air hydrodynamic radial axle
It holds II (10) to be mounted at axle journal V (21), be connect by bolt with interior thrust shaft block (11)；Interior thrust bearing (20) and outer
Thrust bearing (18), which is mounted on axle journal VI (13), passes through positioning pin I with axle journal V (21) junction, interior thrust bearing (20)
(16) it is fixed on interior thrust shaft block (11), outer thrust bearing (18) is fixed on outer thrust shaft block by positioning pin II (15)
(14) on, interior thrust shaft block (11) is bolted on bearing housing (8), and outer thrust shaft block (14) passes through bearing gland
(12) it is bolted on bearing housing (8)；Thrust button is equipped between interior thrust bearing (20) and outer thrust bearing (18)
(17), thrust button (17) is fixed on axis by positioning pin III (19)；Axle journal VI (13) one end is stretched out by bearing gland (12),
It is equipped with keyway above.
2. centrifugal pump of horizontal axis according to claim 1, which is characterized in that the centrifugal pump of horizontal axis is centrifugal pump of single stage type or more
Grade centrifugal pump.
3. centrifugal pump of horizontal axis according to claim 1, which is characterized in that the diameter of six sections of axle journals are as follows: axle journal I (24) < axis
III (22) < axle journal IV (9) of neck II (23) < axle journal, V (21) > axle journal VI (13) of axle journal IV (9) > axle journal.
4. centrifugal pump of horizontal axis according to claim 1, which is characterized in that the air hydrodynamic transverse bearing is compliant foil
Air hydrodynamic transverse bearing, including transverse bearing top foil (7-4), transverse bearing wave foil (7-3) and bearing block (7-2), from
The concentric ring that bearing block (7-2), transverse bearing wave foil (7-3) and transverse bearing top foil (7-4) are formed is followed successively by outside,
Bearing block (7-2) is equipped with positioning pin IV (7-1).
5. centrifugal pump of horizontal axis according to claim 4, which is characterized in that compliant foil air hydrodynamic transverse bearing is complete cycle
360 ° of compliant foil air hydrodynamic transverse bearings of formula, three watts of compliant foil air hydrodynamic transverse bearings, four watts of compliant foil air
Appointing in dynamical pressure radial bearing, five watts of compliant foil air hydrodynamic transverse bearings and eight watts of compliant foil air hydrodynamic transverse bearings
It anticipates one kind.
6. centrifugal pump of horizontal axis according to claim 1, which is characterized in that the air hydrodynamic thrust bearing is compliant foil
Air hydrodynamic thrust bearing, including bottom plate (18-2), thrust bearing wave foil (18-3) and thrust bearing top foil (18-4), bottom
Plate (18-2) is annular shape, and thrust bearing wave foil (18-3) is uniformly arranged in the circumferential direction on bottom plate (18-2), thrust bearing top layer
Paillon (18-4) is uniformly distributed circumferentially on thrust bearing wave foil (18-3), there is several solder joints (18-1) on bottom plate (18-2).
7. centrifugal pump of horizontal axis according to claim 6, which is characterized in that compliant foil air hydrodynamic thrust bearing top layer foil
The piece number is three watts, four watts, five watts, six watts or eight watts.
8. centrifugal pump of horizontal axis according to claim 6 or 7, which is characterized in that compliant foil air hydrodynamic thrust bearing peace
When dress, thrust bearing top foil (18-4) is towards thrust button (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820841168.9U CN208534780U (en) | 2018-06-01 | 2018-06-01 | A kind of centrifugal pump of horizontal axis configuring air hydrodynamic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820841168.9U CN208534780U (en) | 2018-06-01 | 2018-06-01 | A kind of centrifugal pump of horizontal axis configuring air hydrodynamic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208534780U true CN208534780U (en) | 2019-02-22 |
Family
ID=65382400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820841168.9U Expired - Fee Related CN208534780U (en) | 2018-06-01 | 2018-06-01 | A kind of centrifugal pump of horizontal axis configuring air hydrodynamic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208534780U (en) |
-
2018
- 2018-06-01 CN CN201820841168.9U patent/CN208534780U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 Termination date: 20200601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |