CN201386652Y - Planar gap adjusting device applied to roots vacuum pump - Google Patents
Planar gap adjusting device applied to roots vacuum pump Download PDFInfo
- Publication number
- CN201386652Y CN201386652Y CN200920068437U CN200920068437U CN201386652Y CN 201386652 Y CN201386652 Y CN 201386652Y CN 200920068437 U CN200920068437 U CN 200920068437U CN 200920068437 U CN200920068437 U CN 200920068437U CN 201386652 Y CN201386652 Y CN 201386652Y
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- CN
- China
- Prior art keywords
- vacuum pump
- adjusting device
- roots vacuum
- planar gap
- gap adjusting
- 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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- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model provides a planar gap adjusting device applied to a roots vacuum pump. The planar gap adjusting device comprises a disk spring arranged between a shaft and a bearing and used as an elastic device, and an adjusting device connected with the elastic device and arranged outside a bearing gland. The planar gap adjusting device has the advantages that because having high rigidity, the disk spring can bear heavy load with small deformation, thereby being suitable for the location with small axial space like the roots vacuum pump; in addition, the disk spring has rigidity variable property, so that the roots vacuum pump can be safely operated in an environment in which a large amount of air compression heat is generated. Simultaneously, the roots vacuum pump provided with the planar gap adjusting device can overcome the defects of inconvenient planar gap adjustment, influence on the assembly speed and insufficient product stability of the roots vacuum pump in the prior art.
Description
Technical field
The utility model relates generally to the structure of Roots pump, particularly is used for the device of the plane clearance adjustment of Roots pump.
Background technique
In the pumping equipment field, the plane clearance of all kinds of vacuum displacement pumps is the emphasis of designer's control often, the reliability when its size is directly connected to the vacuum pump running.Excesssive gap can influence pumping performance, and is too small then because the vacuum pump running time produces a large amount of gas compression heat, causes part to kill because of expansion.At present, generally when producing the assembling Roots pump, adopt the mode of pad metallic shim to adjust plane clearance mostly, during operation, need the fixed end gap to be detected earlier, the metallic shim of choosing suitable thickness from checkout value is encased inside, and makes it reach the technical requirements of regulation, very inconvenience in this way operation, have bigger unstability simultaneously, and will repeat repeatedly just can finish, have a strong impact on assembling speed and quality.Therefore need provide a kind of Roots pump with novel plane clearance adjustment apparatus, it is guaranteeing that plane clearance meets technical requirements, can promote simultaneously the speed and the quality of assembling under the guaranteed situation of Roots pump reliability, improve the stability of Roots pump operation.
The model utility content
In order to solve existing the problems referred to above in the prior art, the utility model provides a kind of plane clearance adjustment apparatus that is applied to Roots pump.It has adopted belleville spring to adjust plane clearance as elastic device.Belleville spring is arranged between the pump housing and bearing of Roots pump, by the controlling device that is connected with belleville spring, i.e. nut, the compression of adjusting belleville spring with loosen, thereby adjust the size of the plane clearance of Roots pump.
Advantage of the present utility model is: because belleville spring has bigger rigidity, so can bear bigger load with less distortion, be suitable for the little occasion of the such axial space of Roots pump; And belleville spring has the character that becomes rigidity, can make the Roots pump safe operation among the environment that produces a large amount of gas compression heat.Simultaneously, install and use the plane clearance adjustment inconvenience that Roots pump of the present utility model can overcome Roots pump in the prior art, influence assembling speed, and the product stability defect of insufficient.
Description of drawings
Fig. 1 is a schematic representation of the present utility model.
Embodiment
Introduce embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model provides a kind of plane clearance adjustment apparatus that is applied to Roots pump.Described Roots pump comprises the inner pump housing 1 that fan blade 2 is installed, and a side of the pump housing 1 is connected with axle 3, and the outside of axle 3 has bearing 4, and bearing 4 is connected with bearing gland 5.Axle 3 has end cap 6 with the outside of bearing 4.There is plane clearance 7 between the described end cap 6 and the described pump housing 1.Described plane clearance adjustment apparatus comprises: between described axle 3 and bearing 4 belleville spring 8 as elastic device of setting, and be arranged at bearing gland 5 outsides, connect the nut 9 as controlling device of described belleville spring 8.Belleville spring 8 and nut 9 are used to adjust the size of described plane clearance 7.Clockwise rotate nut 9 and dwindle described plane clearance 7 in order to pressure spring 8; Otherwise rotating counterclockwise 9 on nut can amplify described plane clearance 7 by pull-off spring 8.
The utility model has the advantage of: because disk spring has bigger rigidity, so can be with littler Distortion bear bigger load, be suitable for the little occasion of the such axial space of Roots vaccum pump; And, Disk spring has the character that becomes rigidity, and the Roots vaccum pump safe operation is pressed in producing a large amount of gases Among the environment of contracting heat. Simultaneously, install and use Roots vaccum pump of the present utility model and can overcome existing skill The plane clearance of Roots vaccum pump is adjusted inconvenience in the art, affects assembling speed, and the product stability deficiency Defective. Based on above-mentioned advantage, use Roots vaccum pump of the present utility model and have higher than prior art Reliability.
Claims (3)
1, a kind of plane clearance adjustment apparatus that is applied to Roots pump, described Roots pump comprises the pump housing (1), this pump housing (1) is connected with axle (3), the outside of axle (3) has bearing (4), bearing (4) connection bearing gland (5), axle (3) has end cap (6) with the outside of bearing (4), there is plane clearance (7) between the described end cap (6) and the described pump housing (1), the described plane clearance adjustment apparatus that is applied to Roots pump, it is characterized in that: be included in the elastic device that is provided with between described axle (3) and the bearing (4), and the controlling device that connects the described bearing gland of being arranged at of this elastic device (5) outside.
2, plane clearance adjustment apparatus as claimed in claim 1 is characterized in that: described elastic device is belleville spring (8).
3, plane clearance adjustment apparatus as claimed in claim 1 is characterized in that: described controlling device is nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068437U CN201386652Y (en) | 2009-03-05 | 2009-03-05 | Planar gap adjusting device applied to roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068437U CN201386652Y (en) | 2009-03-05 | 2009-03-05 | Planar gap adjusting device applied to roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386652Y true CN201386652Y (en) | 2010-01-20 |
Family
ID=41579186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920068437U Expired - Fee Related CN201386652Y (en) | 2009-03-05 | 2009-03-05 | Planar gap adjusting device applied to roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386652Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331734A (en) * | 2018-02-09 | 2018-07-27 | 宁波洛卡特汽车零部件有限公司 | A kind of vacuum pump and its assembly method with novel assembling structure |
| CN111365240A (en) * | 2018-12-26 | 2020-07-03 | 东北大学 | Vacuum pump inner rotor gap-adjustable mounting structure and gap adjusting method |
-
2009
- 2009-03-05 CN CN200920068437U patent/CN201386652Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331734A (en) * | 2018-02-09 | 2018-07-27 | 宁波洛卡特汽车零部件有限公司 | A kind of vacuum pump and its assembly method with novel assembling structure |
| CN111365240A (en) * | 2018-12-26 | 2020-07-03 | 东北大学 | Vacuum pump inner rotor gap-adjustable mounting structure and gap adjusting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20120305 |