CN201443596U - Anti-blockage mechanical seal device with metal corrugated pipe - Google Patents
Anti-blockage mechanical seal device with metal corrugated pipe Download PDFInfo
- Publication number
- CN201443596U CN201443596U CN2009200160096U CN200920016009U CN201443596U CN 201443596 U CN201443596 U CN 201443596U CN 2009200160096 U CN2009200160096 U CN 2009200160096U CN 200920016009 U CN200920016009 U CN 200920016009U CN 201443596 U CN201443596 U CN 201443596U
- Authority
- CN
- China
- Prior art keywords
- mechanical seal
- corrugated pipe
- metal bellows
- metal corrugated
- seal
- 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
Links
Images
Landscapes
- Mechanical Sealing (AREA)
Abstract
An anti-blockage mechanical seal device with a metal corrugated pipe is characterized in that a spacer sleeve is sleeved on a tailstock of the metal corrugated pipe, and an O-shaped seal ring is arranged between the spacer sleeve and a seal ring. The spacer sleeve can prevent working media easy to crystallize and coke from entering the gaps of the metal corrugated pipe, so that the phenomena that the metal corrugated pipe loses the elasticity compensation capacity and the mechanical seal becomes invalid cannot occur.
Description
Technical field
The utility model relates to a kind of mechanical seal device, relates to a kind of metal bellows mechanical seal device specifically.
Background technique
Metal bellows mechanical seal is a kind of flow axis seal apparatus that is used on the pump rotatingshaft.Because transmission shaft is applied in inside and outside the equipment, like this, there is circumferential clearance in equipment such as centrifugal pump, centrifuge, reactor and compressor between axle and the equipment, and the medium in the equipment, therefore must have one and stop the gland seal device that leaks to external leakage by the gap.The gland seal device kind is a lot, and mechanical seal is because leakage rate is lacked advantages such as life-span length, so be the main axle envelope of these equipment.Mechanical seal is made up of following four parts basically: 1, rotating ring and stationary ring, i.e. friction pair end face; 2, elastic element, promptly stretch compensation mechanism fits tightly seal face; 3, auxiliary seal, the i.e. seal washer of dynamic and static ring; 4, even driving mechanism is the mechanism that rotating ring rotates with the axis.Helical spring, wavy spring etc. are arranged in the elastic element, other pattern is also arranged: as magnetic force induction etc.Also has a kind of elastic element; it is a wave plate of using metal steel band punching out as thin as a wafer to circularize; the axial subdivision mask of wave plate has bellows-shaped; adopt special microplasma gas protection welding process; two or four wave plates are formed a bond pads endoporus; and then the wave plate combined of the good endoporus of many assembly weldings welded cylindrical together; constitute metal bellows; when being compressed, metal bellows can produce elastic force; seal face is fitted tightly; metal bellows and seal ring (rotating ring or stationary ring) and driving mechanism (being called tailstock traditionally) are welded into one, are referred to as corrugated metal pipe components, as shown in Figure 1.We will be called metal bellows mechanical seal as the mechanical seal of elastic element with metal bellows.When corrugated metal pipe components during, be called the state type metal bellows mechanical seal as stationary ring; When corrugated metal pipe components during, be called rotary metal bellows mechanical seal as rotating ring.The characteristics of metal bellows mechanical seal: the centre does not have auxiliary seal ring, has reduced by a leakage point, has reduced the surface friction drag of compensation mechanism simultaneously, makes sealing have good tracing ability; Serviceability temperature is not subjected to the restriction of auxiliary seal ring, has improved the serviceability temperature scope of sealing greatly.But, elastic element-the metal bellows of metal bellows mechanical seal is among seal chamber, contact with the medium in the equipment, there are many media that the phenomenon of coking or knot carbon is arranged under the situation of high temperature, the medium that also has can produce the phenomenon of crystallization under the situation of temperature variation, or dielectric viscosity is very high, these materials are deposited between the slit of the metal bellows that contacts with it easily so, when increasing, sediments can influence the elastic compensating of metal bellows, can fill up the whole slit of metal bellows when serious, the ability that makes metal bellows follow the string and compensate, cause mechanical seal to lose efficacy, cause the leakage of equipment medium, environment is polluted, equipment is caused damage, particularly High Temperature High Pressure, the leakage of poisonous and hazardous medium can cause very serious consequence and industrial accident.
Summary of the invention
At the defective that existing metal bellows mechanical seal device exists, the utility model provides a kind of medium or impurity of preventing to enter the metal bellows mechanical seal device in metal bellows slit.
Solving the problems of the technologies described above the concrete technical measures of being taked is: a kind of anti-blocking type metal bellows mechanical seal device is characterized in that: on the tailstock of metal bellows separation sleeve is housed, the O RunddichtringO is housed between separation sleeve and seal ring.
Beneficial effect of the present invention: owing to there is separation sleeve that the working medium of easy crystallization and coking can not entered in the slit of bellows, thereby prevented the metal bellows compensation ability that follows the string, caused mechanical seal to lose efficacy.
Description of drawings
Fig. 1 is existing metal bellows mechanical seal apparatus structure schematic representation.
Fig. 2 is the utility model structural representation.
Fig. 3 is the working state structure schematic representation.
Embodiment
Accompanying drawings structure of the present utility model.
A kind of anti-blocking type metal bellows mechanical seal device as shown in Figure 2, is on the tailstock 1 of metal bellows 3 separation sleeve 4 to be housed, and between separation sleeve 4 and seal ring 2 O RunddichtringO 5 is housed.
Separation sleeve is contained on the tailstock with the method for inlaying; Certain magnitude of interference is arranged between separation sleeve and tailstock, can be by not infiltering in the bellows between the two to guarantee working medium, and separation sleeve and assembly are rotated together by Cock screw; A RUBBER O RunddichtringO is arranged between separation sleeve and seal ring, O RunddichtringO and seal ring have the compression magnitude of interference, get decrement during design by 4%～6% of O RunddichtringO line footpath, guarantee that working medium can be by not infiltering in the bellows between the two on the one hand, guarantee that on the other hand seal ring can slide on the O RunddichtringO, realize the metal bellows elastic compensating, make seal face have excellent tracing ability.Figure 3 shows that the fundamental diagram of rotary anti-blocking type metal bellows mechanical seal: anti-blocking type corrugated metal pipe components integral body is as the rotating ring of mechanical seal, this side is the working medium end, it contacts working medium, anti-blocking type corrugated metal pipe components is fastened on the running shaft or axle sleeve of equipment with Cock screw, rotates with axle; The flange end that the stationary ring of sealing is installed in apparatus casing covers (claiming sealing gland usually), it is actionless, in outside atmosphere end, sealed space is installed in the apparatus casing is called Seal cage, Seal cage is full of working medium when equipment work, the equipment difference, working pressure also has nothing in common with each other.Rotating ring is all realized static seal by the O RunddichtringO with axle or axle sleeve, stationary ring and sealing gland, and rotating ring and stationary ring end face are to be compressed the back by bellows to produce elastic compensating, form the Hydrodynamic film at seal face, and working medium is not leaked, and form motive sealing.Owing to there is separation sleeve that the working medium of easy crystallization and coking can not entered in the slit of bellows, thereby prevent the metal bellows compensation ability that follows the string, caused mechanical seal to lose efficacy.
Claims (1)
1. an anti-blocking type metal bellows mechanical seal device is characterized in that: on the tailstock of metal bellows separation sleeve is housed, the O RunddichtringO is housed between separation sleeve and seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200160096U CN201443596U (en) | 2009-07-30 | 2009-07-30 | Anti-blockage mechanical seal device with metal corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200160096U CN201443596U (en) | 2009-07-30 | 2009-07-30 | Anti-blockage mechanical seal device with metal corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443596U true CN201443596U (en) | 2010-04-28 |
Family
ID=42548273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200160096U Expired - Fee Related CN201443596U (en) | 2009-07-30 | 2009-07-30 | Anti-blockage mechanical seal device with metal corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443596U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514885A (en) * | 2014-12-26 | 2015-04-15 | 大连华阳密封股份有限公司 | Bellows mechanical seal applicable to crystallization work condition |
| CN109891137A (en) * | 2016-11-16 | 2019-06-14 | 伊格尔工业股份有限公司 | Mechanical sealing member |
-
2009
- 2009-07-30 CN CN2009200160096U patent/CN201443596U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514885A (en) * | 2014-12-26 | 2015-04-15 | 大连华阳密封股份有限公司 | Bellows mechanical seal applicable to crystallization work condition |
| CN109891137A (en) * | 2016-11-16 | 2019-06-14 | 伊格尔工业股份有限公司 | Mechanical sealing member |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201443596U (en) | Anti-blockage mechanical seal device with metal corrugated pipe | |
| CN111577649A (en) | Magnetic fluid sealing device for slurry pump | |
| CN105090518A (en) | Corrugated pipe type dry gas seal device and seal method | |
| CN104019238B (en) | A kind of broach elasticity self-adapting seal structure | |
| CN201335032Y (en) | Combined seal device used on shaft end of light hydrocarbon pump | |
| CN106838321A (en) | Kettle side entering type mechanical seal | |
| CN103672259A (en) | Double-channel rotating joint | |
| CN204061889U (en) | A kind of comb elasticity self-adapting seal structure | |
| CN206563077U (en) | Kettle side entering type mechanical seal | |
| CN210178930U (en) | Gas spring mechanical seal | |
| CN206159490U (en) | Single -ended face spring mechanical seal device | |
| CN201902563U (en) | Assembling type mechanism sealing device for double layer double end plane welded metal bellows | |
| US2735701A (en) | Seal construction | |
| CN211738029U (en) | Sealing device for kettle combining carbon ring and dry-running mechanical seal | |
| CN208237077U (en) | Floating ring mechanically-sealing apparatus | |
| CN103321946B (en) | It is automatically adjusted no-water sealing device | |
| CN209705371U (en) | A kind of high-pressure ball valve with redundancy packing seal structure | |
| CN208703129U (en) | A kind of mechanically-sealing apparatus of erosion resistant | |
| CN104455449A (en) | Water pump sealing device | |
| CN207554408U (en) | It dredges discharge pump mechanical seal device | |
| CN205423295U (en) | A sealing device for automobile engine cooling water pump | |
| CN214743345U (en) | Antifouling mechanical seal device | |
| CN210661366U (en) | Mechanical sealing structure suitable for oil field heating station efflux pump | |
| CN213419888U (en) | Gas protection type mechanical seal | |
| CN210178929U (en) | PTFE bellows integrated into one piece mechanical seal |
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: 20100428 Termination date: 20140730 |
|
| EXPY | Termination of patent right or utility model |