CN103147989A - Double-end-face mechanical sealing device of Roots fan - Google Patents
Double-end-face mechanical sealing device of Roots fan Download PDFInfo
- Publication number
- CN103147989A CN103147989A CN 201110402963 CN201110402963A CN103147989A CN 103147989 A CN103147989 A CN 103147989A CN 201110402963 CN201110402963 CN 201110402963 CN 201110402963 A CN201110402963 A CN 201110402963A CN 103147989 A CN103147989 A CN 103147989A
- Authority
- CN
- China
- Prior art keywords
- roots blower
- sealing device
- mechanical sealing
- face mechanical
- ring
- 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.)
- Pending
Links
Images
Abstract
A double-end-face mechanical sealing device of a Roots fan is characterized in that the double-end-face mechanical sealing device is installed between an end cover bearing seat (3) inside a Roots fan end cover (4) and a cylinder body (6). The double-end-face mechanical sealing device of the Roots fan is a double-layer mechanical sealing series-connection composite structure and comprises a moving ring (11), a right shaft sleeve (12) and a left shaft sleeve (14). One stationary ring is respectively installed on two sides of the moving ring (11), and the moving ring (11) is fixed on a shaft (16) of the Roots fan through two positioning pins on the left shaft sleeve (14). The double-end-face mechanical sealing device of the Roots fan completely eradicates mutual contact between lubricating oil and delivered air and guarantees safety and reliability of oil and air sealing of the Roots fan.
Description
Technical field
The present invention relates to the roots blower technical field of sealing technology, specifically a kind ofly carrying dangerous aggressive gas, for example hydrogen cloride HCL, hydrogen sulfide H at roots blower
2S etc. are to the human body toxic gas, and are used for Steam Recovery, are the roots blower double end-face mechanical sealing device of the leakage of avoiding these aggressive gas and steam.
Background technique
General roots blower is all to be used in air to carry, air is carried the requirement of sealing very low, gas is mainly to seal or labyrinth seal by skeletal structure on end cap, the open to atmosphere hole of company is generally arranged on end cap, allowed the part air to release from the hole, adopting common outside framework oil seal near the bearing side, reach the effect of oil sealing, outside framework oil seal is very high to the size requirement of mounting hole, and the long-time applied at elevated temperature of rubber is easily aging, also will consider the reaction of gas and rubber when carrying other special gas.So when carrying some special gas, general employing mechanical seal seals, mainly add in the market mechanical seal and completely cut off lubricant oil and gas between end cap and bearing, 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 gas to the impact of mechanical seal, finally causes the inefficacy of sealing surface.
And common mechanical sealing can only have the sealing oil film of individual layer, is difficult to dangerous aggressive gas and steam is completed into protection and without leakage.
Summary of the invention
The present invention provides a kind of roots blower double end-face mechanical sealing device in order to overcome the deficiency of above-mentioned roots blower sealing configuration when carrying dangerous aggressive gas and steam.
Technological scheme of the present invention is:
A kind of roots blower double end-face mechanical sealing device, described roots blower double end-face mechanical sealing device is arranged between the end-cover axle bearing and cylinder body of roots blower end cap inside, described roots blower double end-face mechanical sealing device is double-deck mechanical seal series composite structure, it comprises rotating ring, right axle sleeve and left axle sleeve, 1 stationary ring is respectively installed in described rotating ring both sides, and rotating ring is fixed on the axle of roots blower by two locating studs on left axle sleeve.
Have flushing hole in the middle of described end cap.Washing solution arrives rotating ring 11 both sides sealing faces by flushing hole 5, forms oil film seal at the both sides sealing face, forms the double-sealing membrane structure, and washing solution is back to outside flush cycle system by return port 15.
The described rotating ring left and right sides is separately installed with left stationary ring and right stationary ring, right stationary ring is arranged on the end cap of roots blower by bolt, and by right stationary ring " O " RunddichtringO press seal, left stationary ring is arranged on bearing support by bolt, and by the sealing of left stationary ring " O " RunddichtringO, right axle sleeve passes through the shaft sealing of axle sleeve " O " RunddichtringO and roots blower, and is fixed with rotating ring.
The bearing support of roots blower is arranged on the end cap of roots blower, and fuel tank is arranged on the left of end cap.Cylinder body 6 is arranged on end cap 4 right sides, and bearing 2 is arranged in bearing support 3, and bearing 2 inner rings compress the location by setting sleeve 17 on impeller,
The general employing of washing solution and gas do not produce reaction turbine oil, machine oil etc.Outer loop washing solution pressure is higher than carrying gas pressure 0.15MPa.
The material of described rotating ring is graphite.
The surface of contact of described rotating ring both sides and stationary ring is the alloy material.
Adopt two static-ring structures on described end cap, in rotating ring both sides, 1 stationary ring is installed respectively.
Described roots blower double end-face mechanical sealing device is arranged on the bearing hole leading portion on end cap (4).
The invention has the beneficial effects as follows:
Roots blower double end-face mechanical sealing device of the present invention, adopt double-sealing end face cascaded structure, utilize outside flush cycle system that two seal faces are lubricated with cooling, stop lubricant oil and carried being in contact with one another of gas, guaranteed the safety and reliability of roots blower oil, hermetic seal.
Description of drawings
Fig. 1 is overall structure scheme of installation of the present invention.
In figure: 1 is that fuel tank, 2 is that bearing, 3 is that bearing support, 4 is that end cap, 5 is that flushing hole, 6 is that cylinder body, 7 is that left stationary ring, 8 is that left stationary ring " O " RunddichtringO, 9 is that right stationary ring, 10 is that right stationary ring " O " RunddichtringO, 11 is that rotating ring, 12 is that right axle sleeve, 13 is that axle sleeve " O " RunddichtringO, 14 is that left axle sleeve, 15 is that return port, 16 is axle.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
As Fig. 1, a kind of roots blower double end-face mechanical sealing device, the roots blower double end-face mechanical sealing device is arranged between the end-cover axle bearing 3 and cylinder body 6 of roots blower end cap 4 inside, described roots blower double end-face mechanical sealing device is double-deck mechanical seal series composite structure, it comprises rotating ring 11, right axle sleeve 12 and left axle sleeve 14,1 stationary ring is respectively installed in described rotating ring 11 both sides, and rotating ring 11 is fixed on the axle 16 of roots blower by two locating studs on left axle sleeve 14.
Have flushing hole 5 in the middle of end cap 4.
Rotating ring 11 left and right sides are separately installed with left stationary ring 7 and right stationary ring 9, right stationary ring 9 is arranged on the end cap 4 of roots blower by bolt, and by right stationary ring " O " RunddichtringO 10 press seals, left stationary ring 7 is arranged on bearing support 3 by bolt, and by 8 sealings of left stationary ring " O " RunddichtringO, right axle sleeve 12 seals by the axle 16 of axle sleeve " O " RunddichtringO 13 with roots blower, and is fixed with rotating ring 11.
The bearing support 3 of roots blower is arranged on the end cap 4 of roots blower, and fuel tank 1 is arranged on end cap 4 left sides.Cylinder body 6 is arranged on end cap 4 right sides, and bearing 2 is arranged in bearing support 3, and bearing 2 inner rings compress the location by setting sleeve 17 on impeller,
The material of rotating ring 11 is graphite.The surface of contact of rotating ring 11 both sides and stationary ring is the alloy material.Adopt two static-ring structures on end cap, in rotating ring both sides, 1 stationary ring is installed respectively.The roots blower double end-face mechanical sealing device is arranged on the bearing hole leading portion on end cap 4.
Washing solution arrives rotating ring 11 both sides sealing faces by flushing hole 5, forms oil film seal at the both sides sealing face, forms the double-sealing membrane structure, and washing solution is back to outside flush cycle system by return port 15.The general employing of washing solution and gas do not produce reaction turbine oil, machine oil etc.Outer loop washing solution pressure is higher than carrying gas pressure 0.15MPa.
The effect of washing solution is to produce oil film between rotating ring 11 and left stationary ring 7 and right stationary ring 9, and plays cooling effect, and takes away the minute impurities solid particle that may damage sealing surface.The general employing of washing solution and gas do not produce reaction turbine oil, machine oil, and pressure is higher than carrying gas pressure 0.15MPa.The flush cycle system is with cooling unit.
Claims (7)
1. roots blower double end-face mechanical sealing device, it is characterized in that described roots blower double end-face mechanical sealing device is arranged between roots blower end cap (4) inner end-cover axle bearing (3) and cylinder body (6), described roots blower double end-face mechanical sealing device is double-deck mechanical seal series composite structure, it comprises rotating ring (11), right axle sleeve (12) and left axle sleeve (14), 1 stationary ring is respectively installed in described rotating ring (11) both sides, rotating ring (11) is fixed on the axle (16) of roots blower by two locating studs on left axle sleeve (14).
2. roots blower double end-face mechanical sealing device according to claim 1, is characterized in that having flushing hole (5) in the middle of described end cap (4).
3. roots blower double end-face mechanical sealing device according to claim 1, it is characterized in that described rotating ring (11) left and right sides is separately installed with left stationary ring (7) and right stationary ring (9), right stationary ring (9) is arranged on the end cap (4) of roots blower by bolt, and by right stationary ring " O " RunddichtringO (10) press seal, left stationary ring (7) is arranged on bearing support (3) by bolt, and by left stationary ring " O " RunddichtringO (8) sealing, right axle sleeve (12) is by axle (16) sealing of axle sleeve " O " RunddichtringO (13) with roots blower, and and rotating ring (11) be fixed.
4. roots blower double end-face mechanical sealing device according to claim 1, the material that it is characterized in that described rotating ring (11) is graphite.
5. roots blower double end-face mechanical sealing device according to claim 1, the surface of contact that it is characterized in that described rotating ring (11) both sides and stationary ring is the alloy material.
6. roots blower double end-face mechanical sealing device according to claim 1 is characterized in that adopting on described end cap two static-ring structures, in rotating ring both sides, 1 stationary ring is installed respectively.
7. roots blower double end-face mechanical sealing device according to claim 1, is characterized in that described roots blower double end-face mechanical sealing device is arranged on the bearing hole leading portion on end cap (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402963 CN103147989A (en) | 2011-12-07 | 2011-12-07 | Double-end-face mechanical sealing device of Roots fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110402963 CN103147989A (en) | 2011-12-07 | 2011-12-07 | Double-end-face mechanical sealing device of Roots fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103147989A true CN103147989A (en) | 2013-06-12 |
Family
ID=48546247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110402963 Pending CN103147989A (en) | 2011-12-07 | 2011-12-07 | Double-end-face mechanical sealing device of Roots fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103147989A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112145472A (en) * | 2020-09-28 | 2020-12-29 | 荏原机械淄博有限公司 | Two-stage combined sealing device suitable for submersible axial-flow pump under severe working conditions |
-
2011
- 2011-12-07 CN CN 201110402963 patent/CN103147989A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112145472A (en) * | 2020-09-28 | 2020-12-29 | 荏原机械淄博有限公司 | Two-stage combined sealing device suitable for submersible axial-flow pump under severe working conditions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009022448A1 (en) | Turbo charger | |
| CN206738156U (en) | A kind of new No leakage roots blower sealing device | |
| CN103147989A (en) | Double-end-face mechanical sealing device of Roots fan | |
| CN205190312U (en) | A atmoseal device for centrifugal blower | |
| CN202370847U (en) | Double-end-face mechanical sealing device of Roots fan | |
| CN201851393U (en) | Shaft sealing structure of centrifugal fan | |
| CN104100524A (en) | Roots blower with combined sealing structure | |
| CN202273859U (en) | Combined sealing roots blower | |
| CN201490807U (en) | Sealing device used between motor and structural component | |
| CN212130789U (en) | Dry-type does not have oily helical-lobe compressor main shaft oil gas isolation combination seal structure | |
| CN102305105B (en) | Sealing structure of screw expander | |
| CN202500774U (en) | Composite sealing device for Roots blower end cover | |
| CN103122858A (en) | Composite sealing device of Roots blower end cover | |
| CN202520958U (en) | Gas sealing system for hydrogenerator | |
| CN202381701U (en) | Device for sealing bearing boxes of silicon wafer cutting machine | |
| CN206129685U (en) | Oiling formula fan shaft seal device | |
| CN102829188A (en) | Rear shaft seal device with integral moving ring | |
| CN201521641U (en) | Efficient carbon ring sealing device | |
| CN2208627Y (en) | Gas membrane float-ring oil sealing for air compressor | |
| CN203374482U (en) | Framework sealing assembly | |
| CN203297141U (en) | Novel shaft sealing device for sheet type pump | |
| CN202048209U (en) | Mixer shaft end sealing device | |
| CN109253084A (en) | A kind of sealing device | |
| CN201116535Y (en) | Bearing dynamic sealing structure for single-stage single-sucking centrifugal pump | |
| CN202578805U (en) | Turbine sealing structure of turbine generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |