CN204357758U - Air ring type vacuum pump bearing - Google Patents
Air ring type vacuum pump bearing Download PDFInfo
- Publication number
- CN204357758U CN204357758U CN201420747147.2U CN201420747147U CN204357758U CN 204357758 U CN204357758 U CN 204357758U CN 201420747147 U CN201420747147 U CN 201420747147U CN 204357758 U CN204357758 U CN 204357758U
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- CN
- China
- Prior art keywords
- ring
- fitting seat
- outer ring
- vacuum pump
- type vacuum
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a kind of air ring type vacuum pump bearing, belongs to field of mechanical technique.It solve the problems such as existing air ring type vacuum pump bearing is fragile, working stability is bad.This air ring type vacuum pump bearing comprises inner ring, outer ring and the ball between inner ring and outer ring, outer ring have be connected with its sidepiece and fitting seat in the form of a ring, fitting seat offers the equally distributed tapped hole of multiple circumference on the side of outer ring, be fixed with wear-resisting copper sheathing to the inwall interference fit of fitting seat, wear-resisting copper sheathing is arranged close to inner ring.The utility model has the advantages such as compact structure, good operating stability and long service life.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of bearing, particularly a kind of air ring type vacuum pump bearing.
Background technique
Air ring type vacuum pump mainly comprises the pump housing, pump cover, drain flange and the rotatingshaft with driven by motor, and the impeller to be driven by rotatingshaft, impeller is provided with blade, the inwall of the pump housing and pump cover forms an enclosed annular gas runner jointly, when wheel rotation, due to the effect of centrifugal force, wind direction impels gas outwards to move forward, thus forms spiral helicine motion.Air between the blade of impeller accelerates rotate and the gas outside the pump housing is clamp-oned side channel in the shape of a spiral, and namely by intakeport suction gas, after gas approaching side runner, gas is compressed, and is then returned to again between impeller blade and again accelerates to rotate.When air passes impeller and side channel along a spiral flow channel, the degree that each impeller blade adds compression and accelerates, along with the carrying out rotated, the kinetic energy of gas increases, the gas pressure passed through along side runner is increased further, and when air arrives the tie point of side channel and drain flange, now side runner narrows in outlet port, namely gas be extruded blade, discharges the pump housing by the silencing apparatus of exhaust outlet.
Current air ring type vacuum pump two ends all adopt bearing to fix, its bearing is that bearing is fixed on the rotatingshaft of motor by employing one piece of baffle plate and a bolt, owing to not loosening measure, when rotatingshaft rotates time, bearing inner race follows high speed rotating, but the screw thread self-locking of bolt self is limited in one's ability, particularly when impeller and rotatingshaft High Rotation Speed, the torsion that the self-lock force of bolt produces when can not overcome High Rotation Speed, cause bolt looseness, can cause damage, High Rotation Speed easily causes bear vibration in addition, and stability is bad.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, provides the air ring type vacuum pump bearing of a kind of compact structure, good operating stability.
The purpose of this utility model realizes by following technical proposal: a kind of air ring type vacuum pump bearing, comprise inner ring, outer ring and the ball between inner ring and outer ring, it is characterized in that, described outer ring have be connected with its sidepiece and fitting seat in the form of a ring, described fitting seat offers the equally distributed tapped hole of multiple circumference on the side of outer ring, be fixed with wear-resisting copper sheathing to the inwall interference fit of described fitting seat, described wear-resisting copper sheathing is arranged close to inner ring.
Fitting seat and outer ring are made of one formula structure by this air ring type vacuum pump bearing, during installation, fitting seat and the pump housing are connected by the bolt tapped hole through fitting seat mutually, easy for installation, such outer ring firm position, can bear the vibration that High Rotation Speed produces, can not rock, good operating stability, after installing in addition, wear-resisting copper sheathing is fixed for impeller, avoids impeller directly to wear and tear the inwall of fitting seat, long service life.
In above-mentioned air ring type vacuum pump bearing, described inner ring is provided with gasket seal away between the side of fitting seat and outer ring.The setting of gasket seal avoids lubricant oil to overflow between outer ring and inner ring, and lubricating oil level, in ball place, provides good lubrication.
In above-mentioned air ring type vacuum pump bearing, the sidepiece of described fitting seat outer ring is dorsad provided with oil seal ring.When rotatingshaft High Rotation Speed, pump housing internal air pressure is large, easily by the gas with dust between impeller press-in fitting seat and inner ring, oil seal ring plays obstruction seals effect, avoids gas, dust enters inner ring place, prevent inner ring from wearing and tearing, extend working life.
In above-mentioned air ring type vacuum pump bearing, the outer ring of described fitting seat is provided with at least two seals circle.When rotatingshaft High Rotation Speed, pump housing internal air pressure is large, and air-flow is accelerated, and gas easily leaks between fitting seat outer ring and the pump housing, the Leakage Gas arranged in effective prevention pump housing of seal ring, good airproof performance.
Compared with prior art, this air ring type vacuum pump is compact with bearing structure, easy for installation, good operating stability, good airproof performance, long service life.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of this air ring type vacuum pump bearing.
In figure, 1, inner ring; 2, outer ring; 3, ball; 4, fitting seat; 5, tapped hole; 6, wear-resisting copper sheathing; 7, gasket seal; 8, oil seal ring; 9, seal ring.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this air ring type vacuum pump bearing comprises inner ring 1, outer ring 2 and the ball between inner ring 1 and outer ring 23, outer ring 2 have be connected with its sidepiece and fitting seat 4 in the form of a ring, fitting seat 4 offers the equally distributed tapped hole 5 of multiple circumference on the side of outer ring 2, be fixed with wear-resisting copper sheathing 6 to the inwall interference fit of fitting seat 4, wear-resisting copper sheathing 6 is arranged close to inner ring 1, and inner ring 1 is provided with gasket seal 7 away between the side of fitting seat 4 and outer ring 2.
Fitting seat 4 and outer ring 2 are made of one formula structure by this air ring type vacuum pump bearing, during installation, fitting seat 4 is connected with the pump housing by the bolt tapped hole 5 through fitting seat 4 mutually, such outer ring 2 firm position, the vibration that High Rotation Speed produces can be born, can not rock, good operating stability, after installing in addition, wear-resisting copper sheathing 6 is fixed for impeller, impeller is avoided directly to wear and tear the inwall of fitting seat 4, long service life.
When rotatingshaft High Rotation Speed, pump housing internal air pressure is large, easily the gas with dust is pressed between fitting seat 4 and inner ring 1 from impeller, gas easily leaks between fitting seat 4 outer ring 2 and the pump housing, in the present embodiment, the sidepiece of fitting seat 4 outer ring 2 is dorsad provided with oil seal ring 8, and oil seal ring 8 plays obstruction seals effect, avoids gas, dust enters inner ring 1 place, prevent inner ring 1 from wearing and tearing, extend working life; The outer ring 2 of fitting seat 4 is provided with two seals circle 9, the Leakage Gas arranged in effective prevention pump housing of seal ring 9, good airproof performance
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as inner ring 1, outer ring 2, ball 3, fitting seat 4, tapped hole 5, wear-resisting copper sheathing 6, gasket seal 7, oil seal ring 8, seal ring 9 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (4)
1. an air ring type vacuum pump bearing, the ball (3) comprising inner ring (1), outer ring (2) and be positioned between inner ring (1) and outer ring (2), it is characterized in that, described outer ring (2) have be connected with its sidepiece and fitting seat (4) in the form of a ring, described fitting seat (4) offers the equally distributed tapped hole of multiple circumference (5) on the side of outer ring (2), be fixed with wear-resisting copper sheathing (6) to the inwall interference fit of described fitting seat (4), described wear-resisting copper sheathing (6) is arranged close to inner ring (1).
2. air ring type vacuum pump bearing according to claim 1, is characterized in that, described inner ring (1) is provided with gasket seal (7) away between the side of fitting seat (4) and outer ring (2).
3. air ring type vacuum pump bearing according to claim 1 and 2, is characterized in that, the sidepiece of described fitting seat (4) outer ring (2) is dorsad provided with oil seal ring (8).
4. air ring type vacuum pump bearing according to claim 3, is characterized in that, the outer ring (2) of described fitting seat (4) is provided with at least two seals circle (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420747147.2U CN204357758U (en) | 2014-12-03 | 2014-12-03 | Air ring type vacuum pump bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420747147.2U CN204357758U (en) | 2014-12-03 | 2014-12-03 | Air ring type vacuum pump bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204357758U true CN204357758U (en) | 2015-05-27 |
Family
ID=53259231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420747147.2U Expired - Fee Related CN204357758U (en) | 2014-12-03 | 2014-12-03 | Air ring type vacuum pump bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204357758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236738A (en) * | 2021-04-09 | 2021-08-10 | 燕山大学 | Salt fog prevention bearing structure |
-
2014
- 2014-12-03 CN CN201420747147.2U patent/CN204357758U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236738A (en) * | 2021-04-09 | 2021-08-10 | 燕山大学 | Salt fog prevention bearing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20151203 |
|
| EXPY | Termination of patent right or utility model |