CN202500774U - Composite sealing device for Roots blower end cover - Google Patents
Composite sealing device for Roots blower end cover Download PDFInfo
- Publication number
- CN202500774U CN202500774U CN2011204588917U CN201120458891U CN202500774U CN 202500774 U CN202500774 U CN 202500774U CN 2011204588917 U CN2011204588917 U CN 2011204588917U CN 201120458891 U CN201120458891 U CN 201120458891U CN 202500774 U CN202500774 U CN 202500774U
- Authority
- CN
- China
- Prior art keywords
- ring
- roots blower
- end cap
- rotating ring
- stationary
- 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 - Lifetime
Links
Images
Abstract
A composite sealing device for a Roots blower end cover is characterized by comprising a composite rotating ring (1), a stationary ring (2), a stationary ring O-shaped ring (4), a rotating ring O-shaped ring (8) and a pressure relief hole (9). The stationary ring (2) is disposed on the Roots blower end cover (3). The end cover (3) center is provided with the pressure relief hole (9). The front end of the stationary ring (2) is sealed with the end cover (3) through the stationary ring O-shaped ring (4). The composite rotating ring (1) is a long shaft sleeve and is connected with a shaft of the Roots blower through the rotating ring O-shaped ring (8). The composite rotating ring (1) is provided with a piston ring groove which is inside provided with a piston ring (5). The composite sealing device helps to improve the reliability of mechanical seal, and to ensure that the mechanical seal end face will not be directly impacted by a small amount of gas leaked from the piston ring seal in a cylinder block especially on transporting special gases in the Roots blower, greatly improving oil and gas seal safety and reliability of the Roots blower.
Description
Technical field
[0001] the utility model relates to the roots blower technical field of sealing technology; Specifically a kind of at roots blower when carrying special gas (like methane, water vapour etc.), be the roots blower end cap composite seal device of the risk of leakage that prevents these special gas.
Background technique
[0002] general roots blower all is to be used in air to carry; Air is carried the requirement of sealing very low, and gas mainly is through skeletal structure sealing or labyrinth seal on end cap, and open to atmosphere hole is generally all arranged on end cap; Allowing the part air releases from the hole; Adopting common outside framework oil seal near the bearing side, reaching the effect of oil sealing, outside framework oil seal is very high to the size requirement of mounting hole; And the long-time high temperature use of rubber easy ageing, when carrying other special gas, also to consider the reaction of gas and rubber.So when carrying some special gas, generally adopt mechanical seal to seal, mainly between end cap and bearing, add mechanical seal in the market and completely cut off lubricant oil and gas; But effect is bad, has portion gas to seal sealing surface by direct impulse machine, and long-play can cause the inefficacy of sealing surface; Some producer adds labyrinth seal in the mechanical seal front; But effect neither be fine, can not change the impact of gas to mechanical seal, finally causes the inefficacy of sealing surface.
Summary of the invention
The utility model provides a kind of roots blower end cap composite seal device in order to overcome the deficiency of above-mentioned roots blower sealing configuration when carrying special gas.
The technological scheme of the utility model is:
A kind of roots blower end cap composite seal device; Said seal arrangement is a composite structure, and said sealing is installed between roots blower end cap inner pedestal and the roots blower cylinder body, and the sealing device is mechanical seal and piston ring packing composite structure; Comprise compound rotating ring, stationary ring, stationary ring " O " type circle, rotating ring " O " type circle and relief hole; Stationary ring is installed on the roots blower end cap, has relief hole in the middle of the end cap, and the stationary ring front end is through stationary ring " O " type circle and end bracket enclosed; Compound rotating ring is a long axle sleeve; Compound rotating ring links together through the axle of rotating ring " O " type circle and roots blower, and compound rotating ring is provided with the piston ring groove, in the piston ring groove piston ring is installed.
The place that said end cap and compound rotating ring cooperate is a graphite material.
The place that said compound rotating ring and stationary ring cooperate is the cemented carbide material.
Having four holes on the said stationary ring communicates with relief hole on the end cap.
Said relief hole links to each other with the roots blower import.
Between mechanical seal and piston ring packing, have the pressure release return port on the said end cap.
A kind of roots blower, the bearing hole leading portion on its end cap are equipped with described roots blower end cap composite seal device.
The beneficial effect of the utility model is:
The roots blower end cap composite seal device of the utility model; Improved the reliability of mechanical seal; Guarantee in the cylinder body not direct impulse machine seal face of a small amount of gas through the piston ring packing leakage; Particularly when roots blower is carried special gas, roots blower oil, the Security of hermetic seal, reliability have been improved greatly.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model.
Among the figure: 1 is that compound rotating ring, 2 is stationary ring, 3 end caps, 4 stationary rings " O " type circle, 5 piston rings, 6 bearings, 7 fuel tanks, 8 rotating rings " O " type circle, 9 relief holes.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Like Fig. 1, a kind of roots blower end cap composite seal device, said seal arrangement is a composite structure; Said sealing is installed between roots blower end cap inner pedestal and the roots blower cylinder body, and the sealing device is mechanical seal and piston ring packing composite structure, comprises compound rotating ring 1, stationary ring 2, stationary ring " O " type circle 4, rotating ring " O " type circle 8 and relief hole 9; Stationary ring 2 is installed on the roots blower end cap 3; Have relief hole 9 in the middle of the end cap 3, stationary ring 2 front ends are through stationary ring " O " type circle 4 and end cap 3 sealings, and end cap 3 is a graphite material with the place that compound rotating ring 1 cooperates; Has self-lubricating function; Compound rotating ring 1 is a long axle sleeve, and compound rotating ring 1 is the cemented carbide material with the place that stationary ring 2 cooperates, and compound rotating ring 1 links together through the axle of rotating ring " O " type circle 8 with roots blower; Compound rotating ring 1 is provided with the piston ring groove, and piston ring 5 is installed in the piston ring groove.Having four holes on the stationary ring 2 communicates with relief hole 9 on the end cap 3.Relief hole 9 links to each other with the roots blower import.
Piston ring 5 stops a part of cylinder body internal leakage gas; Little of gas continues to leak into ventilation relief hole 9 through piston ring; Relief hole 9 is communicated to the blower fan import through reflow pipe; Guide to import to the gas of this part leakage, guarantee in the cylinder body that a small amount of gas that leaks through piston ring packing can the impulse machine seal face, the safe and effective work of assurance mechanical sealing surface.
A kind of roots blower end cap composite seal device, end cap 3 is the integrated type cast structure, stationary ring 2 is installed in the end cap 3; Have four holes on the stationary ring 2 and communicate with relief hole 9 on the end cap 3, stationary ring 2 is through sealing between stationary ring " O " type circle 4 and the end cap, compound rotating ring 1 through rotating ring " O " type circle 8 with spool be connected; The compound rotating ring 1 outer ring piston ring groove of having got on the bus; Ring installation 5 in the piston ring groove has oil film between stationary ring 2 and the compound rotating ring 1, compresses through bearing 6 inner rings; End cap 3 left sides are cylinder bodies, and bearing 6 right sides are fuel tanks 7.
The special gas of carrying in the roots blower cylinder body leaks through a piston ring 5; Some arrives compound rotating ring 1 middle groove, and this part gas leaks in the relief hole 9 through the hole on the stationary ring 2; Relief hole 9 links to each other with the roots blower import, plays the air venting effect.Prevent that gas from directly impacting dynamic and static ring 2 seal faces, guarantee that sealingly secure is reliable, guarantee that gas 100% does not have leakage.
Claims (5)
1. roots blower end cap composite seal device; It is characterized in that comprising compound rotating ring (1), stationary ring (2), stationary ring " O " type circle (4), rotating ring " O " type circle (8) and relief hole (9); Stationary ring (2) is installed on the roots blower end cap (3), has relief hole (9) in the middle of the end cap (3), and stationary ring (2) front end is through stationary ring " O " type circle (4) and end cap (3) sealing; Compound rotating ring (1) is a long axle sleeve; Compound rotating ring (1) links together through the axle of rotating ring " O " type circle (8) with roots blower, and compound rotating ring (1) is provided with the piston ring groove, and piston ring (5) is installed in the piston ring groove.
2. roots blower end cap composite seal device according to claim 1 is characterized in that having on the said stationary ring (2) four holes and communicates with relief hole (9) on the end cap (3).
3. roots blower end cap composite seal device according to claim 1 and 2 is characterized in that said relief hole (9) links to each other with the roots blower import.
4. roots blower end cap composite seal device according to claim 1 and 2 is characterized in that the place that said end cap (3) and compound rotating ring (1) cooperate is a graphite material.
5. roots blower end cap composite seal device according to claim 1 and 2 is characterized in that the place that said compound rotating ring (1) and stationary ring (2) cooperate is the cemented carbide material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204588917U CN202500774U (en) | 2011-11-18 | 2011-11-18 | Composite sealing device for Roots blower end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204588917U CN202500774U (en) | 2011-11-18 | 2011-11-18 | Composite sealing device for Roots blower end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500774U true CN202500774U (en) | 2012-10-24 |
Family
ID=47037389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204588917U Expired - Lifetime CN202500774U (en) | 2011-11-18 | 2011-11-18 | Composite sealing device for Roots blower end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500774U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122858A (en) * | 2011-11-18 | 2013-05-29 | 宜兴优纳特机械有限公司 | Composite sealing device of Roots blower end cover |
| CN103486045A (en) * | 2013-10-16 | 2014-01-01 | 宁波爱发科真空技术有限公司 | Lubricating structure for mechanical seal of Roots pump |
-
2011
- 2011-11-18 CN CN2011204588917U patent/CN202500774U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122858A (en) * | 2011-11-18 | 2013-05-29 | 宜兴优纳特机械有限公司 | Composite sealing device of Roots blower end cover |
| CN103486045A (en) * | 2013-10-16 | 2014-01-01 | 宁波爱发科真空技术有限公司 | Lubricating structure for mechanical seal of Roots pump |
| CN103486045B (en) * | 2013-10-16 | 2016-04-13 | 宁波爱发科真空技术有限公司 | The lubricating structure of Roots pump mechanical seal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201526675U (en) | Novel dynamic sealing device for gas | |
| CN102364117A (en) | Combined shaft end seal | |
| CN202500774U (en) | Composite sealing device for Roots blower end cover | |
| CN103122858A (en) | Composite sealing device of Roots blower end cover | |
| CN102966740B (en) | The non-active Double End sealing device for stern tube of water lubrication deep-water | |
| CN201544345U (en) | Shaft end sealing structure and concrete mixer with shaft end sealing structure | |
| CN102434225A (en) | Sealing structure of booster impeller shaft | |
| CN102355079A (en) | End cover type sliding bearing of high-speed motor | |
| CN202468438U (en) | Combined sealing device for submerged pump | |
| CN202012501U (en) | Combined type shaft end seal | |
| CN201568568U (en) | Sealing structure at pressure end of turbocharger | |
| CN2727508Y (en) | Gas fan sealing device | |
| CN102937185A (en) | Multiple shaft seal structure | |
| CN102563076A (en) | Shaft seal device | |
| CN202646398U (en) | End cover type sliding bearing negative pressure resistance oil gas sealing device | |
| CN202370847U (en) | Double-end-face mechanical sealing device of Roots fan | |
| CN103147989A (en) | Double-end-face mechanical sealing device of Roots fan | |
| CN202612629U (en) | Bearing protection device for bottom blender seal | |
| CN203906375U (en) | High-pressure leakage-preventing air blower | |
| CN201891775U (en) | Wheel cylinder assembly | |
| CN205243925U (en) | Prevent interfering high -speed seal assembly | |
| CN201057272Y (en) | Gas sealing mechanism of bearing inner cover | |
| CN209115383U (en) | A kind of novel vertical pump packing structure | |
| CN104868636A (en) | High-pressure combustible gas valve opening and closing motor | |
| CN205978452U (en) | Shaft seal device of blendor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |