CN2658487Y - External mechanical sealing device - Google Patents
External mechanical sealing device Download PDFInfo
- Publication number
- CN2658487Y CN2658487Y CN 03263209 CN03263209U CN2658487Y CN 2658487 Y CN2658487 Y CN 2658487Y CN 03263209 CN03263209 CN 03263209 CN 03263209 U CN03263209 U CN 03263209U CN 2658487 Y CN2658487 Y CN 2658487Y
- Authority
- CN
- China
- Prior art keywords
- ring
- seal
- static ring
- stationary ring
- hole
- 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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Abstract
The utility model relates to an externally-mounted mechanical seal device pertaining to a seal technical field, and consists of a dynamic ring and a static ring which are equipped on an seal shaft, as well as a pressing cover of the static ring, and is characterized in that the static ring is embedded in an internal hole of the pressing cover of the static ring; the pressing ring of the static ring is provided with a fluid-injected hole; the static ring is proved with a radial through the connected with the fluid-injected hole. The radial through hole is communicated with a gap between the static ring and the seal shaft; an inner end surface of the static ring is contacted with a seal ring on the seal shaft. The utility model enables that the fluid inside a machine is retarded by a sealant, can not flow on such components as the static ring or the dynamic ring and can not overflow, thus having no environmental pollution; causes an equal friction for the contact area of the static ring and prolongs the service life of the static ring and the dynamic ring by 3 years in comparison with the prior art because a lubricating function is produced by the water existing between the contact surfaces of the dynamic ring and the static ring, the frictional force between the contact surfaces is reduced and the area at the end surface of the dynamic ring is greater than the area at the end surface of the static ring.
Description
Technical field
The utility model belongs to field of sealing technology, is specifically related to the sealing between a kind of relatively-stationary.
Background technique
The field that needs corrosion-resistant external mechanical seal at industrial pump, compressor and blower fan etc., generally adopt the mode that stationary ring and rotating ring are installed on seal shaft to seal, stationary ring is installed in the inner of machine, and rotating ring is near the stationary ring setting, in case the liquid spill in the above-mentioned machine.In these equipment, especially centrifugal acid and alkali pumps, if seal badly, strong acid, highly basic in the pump are excessive, machine parts such as corrosion stationary ring, rotating ring cause environmental pollution, so this kind equipment are had relatively high expectations to sealability.Generally, stationary ring is manufactured as stainless steel, pottery or silicon carbide etc. by hard material, and rotating ring is manufactured as poly-tetrafluoro, graphite or anti-corrosive rubber by soft material.Because rotating ring and stationary ring relative movement cause wearing and tearing groove to occur, thereby easily cause liquid leakage, etching apparatus in the working life of shortening sealing configuration, just needed to change related components in 2-3 month generally speaking.
The model utility content
In order to solve the problem that prior art external seal device exists, the utility model provides a kind of can realize excellent sealing to the liquid in the equipment, prevents liquid spill, and can improve the external mechanical seal device of seal life.
The technological scheme that its technical problem that solves the utility model adopts is: design a kind of external mechanical seal device, comprise the rotating ring and the stationary ring that are installed on the seal shaft, and seal end plate, it is characterized in that stationary ring is embedded in the endoporus of seal end plate, offer liquid filling hole on the seal end plate, offer the radial direction through hole that is connected with liquid filling hole, this radial direction through hole on the stationary ring and communicate with gap between stationary ring and the seal shaft, the interior edge face of stationary ring contacts with seal ring on the seal shaft.
The seal ring that connects in the interior edge face of the utility model stationary ring is the labyrinth sealing circle; Stationary ring adopts soft material, and rotating ring adopts hard material; Liquid filling hole is oblique to be opened on the seal end plate; The quantity of radial direction through hole is more than 2 or 2, and is evenly distributed on the stationary ring.
Rotating ring of the present utility model is a ring surface with the end face that contacts of stationary ring, and the face area of rotating ring is greater than the face area of stationary ring.Effectively to prevent liquid spill.
The beneficial effects of the utility model are: after adopting the sealing structure, liquid in the machine is subjected to the obstruct of sealing fluid and can not flow on the Sealings such as stationary ring and rotating ring, owing to be subjected to sealing well, liquid can't be excessive in the machine, thereby non-environmental-pollution, and the material performance requirement of corrosion barrier reduced; Between the surface of contact of rotating ring, stationary ring, there is sealing fluid and produced lubrication, alleviated the frictional force between the surface of contact, and because the rotating ring face area is greater than the face area of stationary ring, therefore can make the uniform wear of stationary ring surface of contact, improved the working life of stationary ring and rotating ring, thereby improved working life; Compared with prior art, the utility model can be brought up to working life 3 years; Can be applicable to fields such as industrial pump, compressor, blower fan.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is the utility model embodiment's a structural representation.
Among the figure, 1. maze trough, 2. labyrinth sealing circle, 3. radial direction through hole, 4. seal end plate, 5. liquid filling hole, 6. stationary ring, 7. rotating ring, 8. seal shaft, 9. gap.
Embodiment
As shown in Figure 1, rotating ring 7 and stationary ring 6 are installed on the seal shaft 8, stationary ring 6 is embedded in the endoporus of seal end plate 4, the oblique liquid filling hole 5 of offering on the seal end plate 4, offer on the stationary ring 6 between the outer circumferential face of the end of three uniform radial direction through hole 3 being connected with liquid filling hole 5, this radial direction through hole and seal shaft 8 and have gap 9, connect labyrinth sealing circle 2 in the interior edge face of stationary ring 6.At this, the interior edge face of stationary ring refers to stationary ring that end face away from rotating ring.Stationary ring 6 can adopt materials such as graphite, teflon, anti-corrosive rubber to make, and rotating ring 7 can adopt materials such as pottery, stainless steel or silicon carbide to make.
Water fillings in the liquid filling hole 5, water is by flowing in the radial direction through hole 3 in the gap 9, a part of then water penetrates between stationary ring 6 and the rotating ring 7, make stationary ring 6 and and rotating ring 7 between surface of contact lubricated, reduced frictional force each other, alleviated wearing and tearing; Simultaneously, because stationary ring adopts soft material, rotating ring adopts hard material, and its contact end face can uniform wear, thereby has prolonged the working life of above-mentioned parts.Another part water in the gap 9 acts on the maze trough 1 of labyrinth sealing circle 2, ordinary circumstance, the high 2kg/cm of pressure of the comparable machine liquid of hydraulic pressure in the gap 9
2(guarantee than the high 2kg/cm of back pressure in the pump
2).Therefore stoped of the infiltration of the interior liquid of machine, protected stationary ring, played seal action well to stationary ring 6.
Claims (7)
1. external mechanical seal device, comprise the rotating ring and the stationary ring that are installed on the seal shaft, and seal end plate, it is characterized in that stationary ring is embedded in the endoporus of seal end plate, offer liquid filling hole on the seal end plate, offer the radial direction through hole that is connected with liquid filling hole, this radial direction through hole on the stationary ring and communicate with gap between stationary ring and the seal shaft, the interior edge face of stationary ring contacts with seal ring on the seal shaft.
2. external mechanical seal device according to claim 1 is characterized in that the seal ring that connects in the interior edge face of stationary ring is the labyrinth sealing circle.
3. external mechanical seal device according to claim 1 is characterized in that stationary ring adopts soft material, and rotating ring adopts hard material.
4. external mechanical seal device according to claim 1 is characterized in that liquid filling hole is oblique to be opened on the seal end plate.
5. according to claim 1 or 3 described external mechanical seal devices, the quantity that it is characterized in that radial direction through hole is more than 2 or 2.
6. external mechanical seal device according to claim 5 is characterized in that radial direction through hole is distributed on the stationary ring.
7. external mechanical seal device according to claim 1 is characterized in that rotating ring is a ring surface with the end face that contacts of stationary ring, and the face area of rotating ring is greater than the face area of stationary ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03263209 CN2658487Y (en) | 2003-09-30 | 2003-09-30 | External mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03263209 CN2658487Y (en) | 2003-09-30 | 2003-09-30 | External mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658487Y true CN2658487Y (en) | 2004-11-24 |
Family
ID=34329540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03263209 Expired - Fee Related CN2658487Y (en) | 2003-09-30 | 2003-09-30 | External mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658487Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075517A (en) * | 2013-01-16 | 2013-05-01 | 苏瑞益 | Multi-end surface combined mechanical seal |
-
2003
- 2003-09-30 CN CN 03263209 patent/CN2658487Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075517A (en) * | 2013-01-16 | 2013-05-01 | 苏瑞益 | Multi-end surface combined mechanical seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |