CN220687652U - Thrust piece and air suspension centrifugal blower - Google Patents
Thrust piece and air suspension centrifugal blower Download PDFInfo
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- CN220687652U CN220687652U CN202321746917.7U CN202321746917U CN220687652U CN 220687652 U CN220687652 U CN 220687652U CN 202321746917 U CN202321746917 U CN 202321746917U CN 220687652 U CN220687652 U CN 220687652U
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- 239000000725 suspension Substances 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 20
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
A thrust piece and air suspension centrifugal blower relate to the blower technical field, wherein, the thrust piece includes the thrust piece body of the annular structure, there are through holes in the axle center of the thrust piece body; the two end surfaces of the thrust piece body are respectively provided with a left positioning boss and a right positioning boss with annular structures in an outwards protruding way, and the inner wall of the left positioning boss and the inner wall of the right positioning boss are both positioned on the same circumferential surface with the inner wall of the through hole; the two end surfaces of the thrust piece body are respectively concavely provided with a plurality of left positioning holes and a plurality of right positioning holes, and the left positioning holes and the right positioning holes are respectively distributed at equal intervals around the axial circumference of the thrust piece body and are arranged at the outer side of the through hole along the radial direction of the thrust piece body. The utility model can strengthen the radial stress intensity of the thrust piece and improve the use effect of the thrust piece; meanwhile, the rotation speed of the thrust piece and the rotation shaft is ensured to be synchronous, and the performance of the thrust piece is improved.
Description
Technical Field
The utility model relates to the technical field of blowers, in particular to a thrust piece and an air suspension centrifugal blower.
Background
In recent years, the air suspension centrifugal blower has become an important product for energy conservation and consumption reduction in the blower field, and compared with the traditional Roots blower, the air suspension centrifugal blower can reduce the energy consumption by 30 percent and the noise by 35 percent.
The air-float centrifugal blower combines a plurality of advanced technologies such as dynamic pressure air bearings, high-speed permanent magnet synchronous motors, three-way centrifugal compressors, high-speed variable frequency systems and the like, and has been widely applied to sewage treatment, aquaculture, pneumatic conveying and the like.
The dynamic pressure air bearing applied to the blower is divided into a radial bearing and an axial bearing, wherein the radial bearing is used for supporting the rotating shaft when the rotating shaft rotates, and the axial bearing is used for limiting the axial movement of the rotating shaft and bearing the axial force caused by the impeller. In general, a thrust piece is sandwiched between two axial air bearings, which is a typical application scenario, and a gap between the thrust piece and the bearing is a thrust gap, and when in operation, a gas film in the thrust gap generates pressure to act on the thrust piece, so that the effects of limiting axial movement and bearing axial force are achieved.
Because the bearing and pushing piece belongs to the parts with larger diameter in the rotating shaft assembly, and the weight of the material is heavier, the bearing and pushing piece bears the maximum centrifugal force in the rotating process of the rotating shaft, so that the bearing and pushing piece becomes the part which is most likely to cause problems due to the centrifugal force in the whole rotating shaft system.
As is known, the bulletin number is: the utility model patent of CN213511271U discloses an air suspension high-speed centrifugal compressor, wherein a thrust piece of the existing structure is in an annular structure and sleeved on the outer side of a rotating shaft, when the rotating shaft drives rotation, too high rotating speed can enlarge an inner hole of the thrust piece, so that the thrust piece taking the inner hole as a positioning reference loosens on a shafting part, and the dynamic balance of the rotating shaft is destroyed; or the thrust piece and the rotating shaft do not synchronously rotate due to loosening of the inner hole, so that abrasion is caused or thrust is lost; seriously, the centrifugal force is too large to crack the thrust piece, so that the fan is damaged and the safety risk is caused.
Therefore, the bearing and pushing piece also limits the highest rotating speed of the fan to a certain extent, especially in high-speed application, such as an air-float fuel cell air compressor, the rotating speed is generally over 90000 revolutions, the surface area of the bearing and pushing piece needs to be increased, namely the diameter is increased, and the risk of cracking is brought; and decreasing the diameter of the thrust piece may cause damage to the equipment due to insufficient thrust.
Disclosure of Invention
In view of this, the technical problems to be solved by the present utility model are: the thrust piece and the air suspension centrifugal blower are provided, so that the radial stress intensity of the thrust piece can be enhanced, and the use effect of the thrust piece is improved; meanwhile, the rotation speed of the thrust piece and the rotation shaft is ensured to be synchronous, and the performance of the thrust piece is improved.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the thrust piece comprises a thrust piece body with an annular structure, wherein a through hole is formed in the axis of the thrust piece body;
the two end faces of the thrust piece body are respectively provided with a left positioning boss and a right positioning boss which are in annular structures in an outward protruding way, the left positioning boss and the right positioning boss are both arranged coaxially with the through hole, and the inner wall of the left positioning boss and the inner wall of the right positioning boss are both positioned on the same circumferential face with the inner wall of the through hole;
the novel bearing pushing plate comprises a pushing plate body, and is characterized in that a plurality of left locating holes and a plurality of right locating holes are concavely formed in two end faces of the pushing plate body respectively, the left locating holes are close to the left locating boss, the right locating holes are close to the right locating boss, the left locating holes and the right locating holes are distributed around the axial circumferential equidistance of the pushing plate body respectively, and the right locating holes are radially arranged on the outer side of the through hole along the pushing plate body.
Preferably, the left positioning boss and the right positioning boss are integrally formed with the thrust piece body.
Preferably, a left positioning surface is arranged on the outer wall of the left positioning boss, and a right positioning surface is arranged on the outer wall of the right positioning boss.
Preferably, the outer wall of the left positioning boss is concavely provided with a left over-travel groove and is positioned at the inner side of the left positioning surface, and the outer wall of the right positioning boss is concavely provided with a right over-travel groove and is positioned at the inner side of the right positioning surface.
Preferably, a left guiding inclined plane is arranged on the inner wall of the left positioning boss, and a right guiding inclined plane is arranged on the inner wall of the right positioning boss.
An air suspension centrifugal blower comprises a rotating shaft, wherein the rotating shaft is coaxially sleeved with the thrust bearing piece and the sealing sleeve;
the rotating shaft is concavely provided with an annular accommodating groove which is coaxially arranged, and the thrust piece body is positioned between the annular accommodating groove and the sealing sleeve; the left positioning boss is arranged on the inner side of the sealing sleeve, and the right positioning boss is arranged in the annular accommodating groove.
Preferably, the rotating shaft is provided with a plurality of first pin holes arranged towards the right positioning holes;
the first pin hole is positioned at the outer side of the annular accommodating groove along the radial direction of the rotating shaft, the axis of the first pin hole is parallel to the axis of the rotating shaft, and a first positioning pin is arranged in the first pin hole; one end of the first locating pin is located in the first pin hole, and the other end of the first locating pin extends out of the first pin hole and is located in the right locating hole.
Preferably, the positions and the number of the first pin holes are in one-to-one correspondence with the positions and the number of the right positioning holes.
Preferably, the sealing sleeve is provided with a plurality of second pin holes arranged towards the left positioning hole;
the axis of the second pin hole is parallel to the axis of the sealing sleeve, and a second positioning pin is arranged in the second pin hole; one end of the second locating pin is located in the second pin hole, and the other end of the second locating pin extends out of the second pin hole and is located in the left locating hole.
Preferably, the positions and the number of the second pin holes are in one-to-one correspondence with the positions and the number of the left positioning holes.
After the technical scheme is adopted, the utility model has the beneficial effects that:
the utility model discloses a thrust piece and an air suspension centrifugal blower, wherein the thrust piece comprises a thrust piece body with an annular structure, and a through hole is arranged at the axle center of the thrust piece body, so that the use requirement that the thrust piece body is sleeved outside a rotating shaft through the through hole is met. The two end faces of the thrust piece body are respectively provided with a left positioning boss and a right positioning boss which are of annular structures in an outward protruding way, the left positioning boss and the right positioning boss are both arranged coaxially with the through hole, and the inner wall of the left positioning boss and the inner wall of the right positioning boss are both positioned on the same circumferential face with the inner wall of the through hole.
The two end surfaces of the thrust piece body are respectively concavely provided with a plurality of left positioning holes and a plurality of right positioning holes, and the left positioning holes and the right positioning holes are respectively distributed around the axial circumference of the thrust piece body at equal intervals. After the thrust piece body is sleeved outside the rotating shaft, the thrust piece body can be positioned by the left positioning hole and the right positioning hole respectively with the sealing sleeve and the rotating shaft, so that the synchronization of the thrust piece and the rotating shaft rotating speed is ensured, the hidden danger that the thrust piece is inconsistent with the rotating shaft rotating speed in the rotating process is eliminated, and the performance of the thrust piece is improved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a thrust piece according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic diagram of a second air suspension centrifugal blower according to an embodiment of the utility model;
FIG. 4 is a schematic structural view of the thrust piece of FIG. 3 in a state of being matched with the rotating shaft and the sealing sleeve;
in the figure:
1. a thrust piece body; 11. a through hole; 2. a left positioning boss; 21. a left positioning surface; 22. a left over-travel slot; 23. a left guide slope; 3. a right positioning boss; 31. a right positioning surface; 32. a right over-travel slot; 33. a right guiding inclined plane; 4. a left positioning hole; 5. a right positioning hole; 6. a rotating shaft; 61. an annular accommodating groove; 62. a first pin hole; 7. sealing sleeve; 71. a second pin hole; 8. a first positioning pin; 9. a second positioning pin;
in the figure, solid arrows represent the centrifugal force direction of the thrust piece, and broken arrows represent the restraining force direction of the thrust piece.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The terms such as "front", "rear", "left", "right", "middle" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present utility model, and the changes or modifications of the relative relationship thereof are considered to be within the scope of the present utility model without substantial modification of the technical content.
Example 1
As shown in fig. 1 and 2, the embodiment of the utility model comprises a thrust piece body 1 with an annular structure, and a through hole 11 is arranged at the axle center of the thrust piece body 1, so as to meet the use requirement that the thrust piece body 1 is sleeved outside a rotating shaft 6 through the through hole 11.
The two end faces of the thrust piece body 1 are respectively provided with a left positioning boss 2 and a right positioning boss 3 which are of annular structures in an outward protruding way, the left positioning boss 2 and the right positioning boss 3 are both arranged coaxially with the through hole 11, and the inner wall of the left positioning boss 2 and the inner wall of the right positioning boss 3 are both positioned on the same circumferential face with the inner wall of the through hole 11; for the embodiment of the utility model, when the thrust piece body 1 is sleeved outside the rotating shaft 6 through the through hole 11, the left positioning boss 2 and the right positioning boss 3 cannot interfere the sleeving process, and meanwhile, the radial stress capability of the through hole 11 can be enhanced by additionally arranging the left positioning boss 2 and the right positioning boss 3, so that when the thrust piece body 1 is matched with the rotating shaft 6, the abrasion strength of the rotating shaft 6 to the through hole 11 is reduced, the use effect of the thrust piece is improved, and the service life of the thrust piece is prolonged.
Preferably, the left positioning boss 2 and the right positioning boss 3 are integrally formed with the thrust piece body 1, so that the strength of the left positioning boss 2 and the right positioning boss 3 is enhanced, and meanwhile, the original positioning of the thrust piece body 1 is changed from inner hole positioning to outer circle positioning, so that the processing difficulty is reduced.
In order to better match the left positioning boss 2 and the right positioning boss 3 with shafting parts, a left positioning surface 21 is arranged on the outer wall of the left positioning boss 2, a right positioning surface 31 is arranged on the outer wall of the right positioning boss 3, the left positioning surface 21 and the right positioning surface 31 are formed by grinding wheel machining, wherein a left over-travel groove 22 is concavely arranged on the outer wall of the left positioning boss 2 and is positioned on the inner side of the left positioning surface 21, and a right over-travel groove 32 is concavely arranged on the outer wall of the right positioning boss 3 and is positioned on the inner side of the right positioning surface 31.
In order to facilitate the better matching of the left positioning boss 2 and the right positioning boss 3 with shafting parts, a left guiding inclined plane 23 is arranged on the inner wall of the left positioning boss 2, and a right guiding inclined plane 33 is arranged on the inner wall of the right positioning boss 3.
Meanwhile, as the wear-resistant coating on the axial air bearing in the shafting part is made of soft materials, the two end surfaces of the thrust piece body 1 are required to have good hardness and finish, and therefore, the two end surfaces of the thrust piece body 1 in the embodiment of the utility model are provided with the hardness polishing layers, and the processing mode of the hardness polishing layers is formed by adopting nitriding, quenching or hard chromium plating processes.
The two end faces of the thrust piece body 1 are respectively concavely provided with a plurality of left positioning holes 4 and a plurality of right positioning holes 5, the left positioning holes 4 are close to the left positioning boss 2, the right positioning holes 5 are close to the right positioning boss 3, a plurality of left positioning holes 4 and a plurality of right positioning holes 5 are respectively distributed around the axial circumferential equidistance of the thrust piece body 1, and are arranged on the outer side of the through hole 11 along the radial direction of the thrust piece body 1, preferably, the quantity of the left positioning holes 4 and the right positioning holes 5 is the same, and the quantity of the left positioning holes 4 and the right positioning holes 5 is two, three or four. After the push-bearing sheet body 1 is sleeved outside the rotating shaft 6, pin positioning can be carried out on the push-bearing sheet body 1 and the rotating shaft 6 through the left positioning hole 4 and the right positioning hole 5 respectively, so that the rotating speed synchronization of the push-bearing sheet body 1 and the rotating shaft 6 is ensured, the hidden danger that the rotating speed of the push-bearing sheet body 1 is inconsistent with that of the rotating shaft 6 in the rotating process is eliminated, and the performance of the push-bearing sheet body 1 is improved.
Example two
As shown in fig. 2 to 4, the embodiment of the present utility model includes a rotating shaft 6, and a thrust piece and a sealing sleeve 7 as in the first embodiment are coaxially sleeved on the rotating shaft 6.
The rotating shaft 6 is concavely provided with an annular accommodating groove 61 which is coaxially arranged, and the thrust piece body 1 is positioned between the annular accommodating groove 61 and the sealing sleeve 7; wherein, left side location boss 2 sets up in the inboard of seal cover 7, and right side location boss 3 sets up in annular holding tank 61's inside.
In the embodiment of the utility model, a plurality of first pin holes 62 arranged towards the right positioning holes 5 are formed on the rotating shaft 6; wherein, the first pin hole 62 is located outside the annular accommodating groove 61 along the radial direction of the rotating shaft, the axis of the first pin hole 62 is parallel to the axis of the rotating shaft 6, and the first positioning pin 8 is arranged in the first pin hole 62; wherein, one end of first locating pin 8 is located the inside of first pinhole 62, and first pinhole 62 is located the inside of right locating hole 5 to the other end of first locating pin 8 stretches out. Preferably, the positions and the number of the first pin holes 62 are in one-to-one correspondence with the positions and the number of the right positioning holes 5, and for the embodiment of the present utility model, the number of the first pin holes 62 is two, three or four, and the number of the first positioning pins 8 is identical to the number of the first pin holes 62.
The sealing sleeve 7 is provided with a plurality of second pin holes 71 which are arranged towards the left positioning holes 4; wherein, the axis of the second pin hole 71 is parallel to the axis of the sealing sleeve 7, and a second positioning pin 9 is arranged in the second pin hole 71; wherein, one end of the second locating pin 9 is located inside the second pin hole 71, and the other end of the second locating pin 9 extends out of the second pin hole 71 and is located inside the left locating hole 4. Preferably, the positions and the number of the second pin holes 71 are in one-to-one correspondence with the positions and the number of the left positioning holes 4, and for the embodiment of the present utility model, the number of the second pin holes 71 is two, three or four, and the number of the second positioning pins 9 is identical to the number of the second pin holes 71.
Before use, the right positioning boss 3 is placed in the annular accommodating groove 61, then the sealing sleeve 7 is sleeved on the outer side of the left positioning boss 2, the sealing sleeve 7 is matched with the annular accommodating groove 61 to restrain the thrust piece body 1, specifically, the centrifugal force born by the original thrust piece body 1 in the rotating process of the rotating shaft 6 is matched with the left positioning boss 2 through the sealing sleeve 7 and matched with the right positioning boss 3 through the annular accommodating groove 61 to respectively restrain the left positioning boss 2 and the right positioning boss 3, so that when the rotating shaft 6 drives rotation, the through hole 11 is prevented from being rubbed, and the stability is improved; meanwhile, the first locating pin 8 is matched with the first pin hole 62 and the right locating hole 5, the second locating pin 9 is matched with the second pin hole 71 and the left locating hole 4, so that the thrust bearing sheet body 1 is prevented from rotating out of sync with the rotating shaft 6 due to loosening of the through hole 11, abrasion is caused or thrust is lost, the stability of the thrust bearing sheet body 1 is improved, and the using effect of the thrust bearing sheet body 1 is improved.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The thrust piece is characterized by comprising a thrust piece body with an annular structure, wherein a through hole is formed in the axis of the thrust piece body;
the two end faces of the thrust piece body are respectively provided with a left positioning boss and a right positioning boss which are in annular structures in an outward protruding way, the left positioning boss and the right positioning boss are both arranged coaxially with the through hole, and the inner wall of the left positioning boss and the inner wall of the right positioning boss are both positioned on the same circumferential face with the inner wall of the through hole;
the novel bearing pushing plate comprises a pushing plate body, and is characterized in that a plurality of left locating holes and a plurality of right locating holes are concavely formed in two end faces of the pushing plate body respectively, the left locating holes are close to the left locating boss, the right locating holes are close to the right locating boss, the left locating holes and the right locating holes are distributed around the axial circumferential equidistance of the pushing plate body respectively, and the right locating holes are radially arranged on the outer side of the through hole along the pushing plate body.
2. The thrust plate of claim 1 wherein said left locating boss and said right locating boss are integrally formed with said thrust plate body.
3. The thrust plate of claim 1, wherein a left locating surface is provided on an outer wall of the left locating boss and a right locating surface is provided on an outer wall of the right locating boss.
4. The thrust plate of claim 3, wherein the outer wall of the left positioning boss is concavely provided with a left over-travel groove and is positioned at the inner side of the left positioning surface, and the outer wall of the right positioning boss is concavely provided with a right over-travel groove and is positioned at the inner side of the right positioning surface.
5. The thrust plate of claim 1, wherein a left guide ramp is provided on an inner wall of the left positioning boss and a right guide ramp is provided on an inner wall of the right positioning boss.
6. An air suspension centrifugal blower, which is characterized by comprising a rotating shaft, wherein the rotating shaft is coaxially sleeved with a thrust piece and a sealing sleeve according to any one of claims 1 to 5;
the rotating shaft is concavely provided with an annular accommodating groove which is coaxially arranged, and the thrust piece body is positioned between the annular accommodating groove and the sealing sleeve; the left positioning boss is arranged on the inner side of the sealing sleeve, and the right positioning boss is arranged in the annular accommodating groove.
7. The air suspension centrifugal blower according to claim 6, wherein a plurality of first pin holes arranged towards the right positioning holes are formed in the rotating shaft;
the first pin hole is positioned at the outer side of the annular accommodating groove along the radial direction of the rotating shaft, the axis of the first pin hole is parallel to the axis of the rotating shaft, and a first positioning pin is arranged in the first pin hole; one end of the first locating pin is located in the first pin hole, and the other end of the first locating pin extends out of the first pin hole and is located in the right locating hole.
8. The air suspension centrifugal blower of claim 7 wherein the locations and numbers of said first pin holes are in one-to-one correspondence with the locations and numbers of said right locating holes.
9. The air suspension centrifugal blower of claim 7, wherein a plurality of second pin holes are formed in the sealing sleeve and are arranged towards the left positioning hole;
the axis of the second pin hole is parallel to the axis of the sealing sleeve, and a second positioning pin is arranged in the second pin hole; one end of the second locating pin is located in the second pin hole, and the other end of the second locating pin extends out of the second pin hole and is located in the left locating hole.
10. The air suspension centrifugal blower of claim 9 wherein the location and number of said second pin holes are in one-to-one correspondence with the location and number of said left locating holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321746917.7U CN220687652U (en) | 2023-07-05 | 2023-07-05 | Thrust piece and air suspension centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321746917.7U CN220687652U (en) | 2023-07-05 | 2023-07-05 | Thrust piece and air suspension centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220687652U true CN220687652U (en) | 2024-03-29 |
Family
ID=90376813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321746917.7U Active CN220687652U (en) | 2023-07-05 | 2023-07-05 | Thrust piece and air suspension centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220687652U (en) |
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2023
- 2023-07-05 CN CN202321746917.7U patent/CN220687652U/en active Active
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