CN1087412A - Sealing device for bidirectional compensating machinery - Google Patents
Sealing device for bidirectional compensating machinery Download PDFInfo
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- CN1087412A CN1087412A CN 92113545 CN92113545A CN1087412A CN 1087412 A CN1087412 A CN 1087412A CN 92113545 CN92113545 CN 92113545 CN 92113545 A CN92113545 A CN 92113545A CN 1087412 A CN1087412 A CN 1087412A
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- rotating ring
- ring
- mechanical seal
- stationary ring
- stationary
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Abstract
The invention provides a kind of mechanical seal device with bidirectional compensating ability, it comprises stationary ring, rotating ring, first elastic element and second elastic element.Because stationary ring and rotating ring all have the nose balance ability, thereby, can both keep fitting tightly, prevent that particle from entering sealing surface, improve the life-span of mechanical seal greatly even make the working surface of rotating ring and stationary ring of this mechanical seal device when rotatingshaft takes place to vibrate.
Description
The present invention relates to a kind of mechanical seal, particularly a kind of bidirectional compensating formula mechanical seal device.
Two working surfaces of mechanical seal (working surface of rotating ring and the working surface of stationary ring) are to work under the situation of relative high speed rotating, because the power of rotating ring rotation generally comes the automaton main shaft, thereby the vibration in the rotary course is inevitable, and the frequency of vibration is very high usually, in mechanical seal, be provided with the auxiliary seal ring of pooling feature for this reason, and present mechanical seal all has only one-sided nose balance ability so that the working surface of mechanical seal is adjacent to as far as possible mutually, but the stationary ring of a side that does not possess the nose balance ability of this mechanical seal or rotating ring can not definitely guarantee this working surface and another working surface (working surface with side of nose balance ability) and closely cooperate all the time when dither, thereby make above-mentioned two working surfaces that the danger that produces instantaneous gap be arranged, thereby cause the suspended particulate in the liquid to enter in the sealing surface (working surface), the reliability of sealing is descended greatly.
In order to overcome above-mentioned shortcoming, the invention provides a kind of mechanical seal device with bidirectional compensating ability.
To achieve these goals, bidirectional compensating formula mechanical seal device provided by the invention comprises:
One with rotatingshaft Spielpassung and the stationary ring that pins with stationary element sealing;
One with the rotatingshaft Spielpassung and with this rotating ring that rotates;
It is characterized in that it also comprises
Thereby one directly touches with above-mentioned rotating ring and it is applied an elastic force that points to described stationary ring and makes the working surface of rotating ring and above-mentioned stationary ring mutually to being adjacent to first elastic element;
Make second elastic element that this stationary ring and above-mentioned rotating ring are adjacent to mutually thereby one contacts with above-mentioned stationary ring and it is applied an elastic force that points to described rotating ring.
Bidirectional compensating formula mechanical seal device provided by the invention is because the both sides of rotating ring and stationary ring are respectively equipped with elastic element, thereby make stationary ring and rotating ring all have the nose balance ability, and can be from the normal moveout correction faying surface, remaining working surface tightly fits, prevent that particle from entering (above-mentioned working surface seal face), improved the life-span of mechanical seal greatly.
Fig. 1 is the structural representation to an embodiment of bidirectional compensating formula mechanical seal device provided by the invention.
Below in conjunction with drawings and Examples, the present invention is described in detail.
Fig. 1 is the structural representation of one embodiment of the present of invention.As shown in the figure, the internal surface of stationary ring 4 central holes and rotatingshaft 11 Spielpassung, seal by O RunddichtringO 3 between one internal surface 16 of its outmost surface 13 and stationary element 12, in addition, the internal surface of the central hole of rotating ring 5 and rotatingshaft 11 Spielpassung, thus make this rotating ring 5 rotate by pin 7 with rotatingshaft 11; Seal by an O RunddichtringO 6 between one internal surface 17 of the outmost surface 14 of this rotating ring 5 and rotatable member 19.In this embodiment, above-mentioned rotating ring 5 and stationary ring 4 adopt stupalith, can certainly adopt hard material.Then be provided with for example spring 8 of one first elastic element on the right side of rotating ring 5, one end of this spring 8 contacts with the right side 29 of rotating ring 5, its the other end contacts with rotatable member 19, so rotating ring 5 is subjected to the elastic thrust of a sensing stationary ring 4, in addition, be provided with for example spring 1 of one second elastic element in the left side of stationary ring 4, an end of this spring 1 contacts with the left surface 30 of stationary ring 4, its the other end contacts with stationary element 12, so stationary ring 4 is subjected to the elastic thrust of a sensing rotating ring 5.Because above-mentioned elastic force, when rotating ring 5 rotated with rotatingshaft 11, the working surface 9 of stationary ring 4 kept closely contacting with the working surface of rotating ring 5 10.Thereby play seal action.
Also be provided with a pin 2 in the left side of stationary ring 4, an end of this pin embeds in the hole of stationary element 12, and the other end snaps in the groove 35 of stationary ring, thereby prevents that stationary ring 4 from rotating.Be provided with a pin 7 on the right side of rotating ring 5, an end of this pin embeds in the hole of rotatable member 19, and the other end then snaps in the groove 36 of rotating ring 5, relatively rotates thereby make not have between rotating ring 5 and the rotatable member 19.
Because the power of rotatingshaft 11 is usually from motor main shaft; thereby rotatingshaft 11 is in common effective high-frequency vibration of rotation; thereby but, rotating ring 5 and stationary ring 4 have the nose balance ability because being equipped with the elastic element that two rings are adjacent to separately; thereby make that under any circumstance the working surface 10 of rotating ring 5 all keeps closely contacting with the working surface 9 of stationary ring 4; thereby can prevent that the impurity particle in the liquid from entering between the working surface (being sealing surface); protect working surface, improved the working life of mechanical seal.In addition, because above-mentioned bidirectional compensating ability makes rotating ring 5 and stationary ring 4 all can adopt hard material for example pottery, hard material etc.Improved the particle-resistant performance of mechanical seal, certainly, if as the mechanical seal of prior art, rotating ring employing flexible material graphite also can be realized purpose of the present invention.
In addition, if first elastic element of the present invention and second elastic element adopt elastic elements such as bellows, equally also can realize purpose of the present invention.
Mechanical seal of the present invention is used for pumping the centrifugal pump of electrodeposit liquid, when although this liquid contains iron oxide, nickel slag and some organic impuritys, operating temperature is about 65 ℃, when pumping pressure 0.2MPa, and this pump is 9 months (counting 6400 hours) of running continuously, and mechanical seal does not damage.In addition, above-mentioned centrifugal pump uses after 1 year not yet tool bad seals according to circumstances when being used to pump lime water.
Claims (5)
1, a kind of bidirectional compensating formula mechanical seal device, it comprises
One with rotatingshaft Spielpassung and the stationary ring that pins with stationary element sealing;
One with the rotatingshaft Spielpassung and with this rotating ring that rotates;
It is characterized in that it also comprises
Make first elastic element that rotating ring and above-mentioned stationary ring are adjacent to mutually thereby one contacts with above-mentioned rotating ring and it is applied an elastic force that points to described stationary ring;
One contacts with above-mentioned stationary ring and it is applied one points to the elastic force of described rotating ring, thereby makes second elastic element that this stationary ring and above-mentioned rotating ring are adjacent to mutually.
2, bidirectional compensating formula mechanical seal device as claimed in claim 1 is characterized in that above-mentioned stationary ring and rotating ring all adopt hard material.
3, bidirectional compensating formula mechanical seal device as claimed in claim 2 is characterized in that described rotating ring adopts stupalith.
4, bidirectional compensating formula mechanical seal device as claimed in claim 2 is characterized in that described stationary ring adopts stupalith.
5, bidirectional compensating formula mechanical seal device as claimed in claim 1 is characterized in that described first elastic element and second elastic element adopt spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113545 CN1087412A (en) | 1992-11-26 | 1992-11-26 | Sealing device for bidirectional compensating machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92113545 CN1087412A (en) | 1992-11-26 | 1992-11-26 | Sealing device for bidirectional compensating machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1087412A true CN1087412A (en) | 1994-06-01 |
Family
ID=4946463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92113545 Pending CN1087412A (en) | 1992-11-26 | 1992-11-26 | Sealing device for bidirectional compensating machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1087412A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422865A (en) * | 2016-01-12 | 2016-03-23 | 中国航空动力机械研究所 | Hydrodynamic sealing structure |
| CN111677870A (en) * | 2020-06-17 | 2020-09-18 | 中国电子科技集团公司第十四研究所 | Anti-impact mechanical seal automatic compensation structure |
-
1992
- 1992-11-26 CN CN 92113545 patent/CN1087412A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422865A (en) * | 2016-01-12 | 2016-03-23 | 中国航空动力机械研究所 | Hydrodynamic sealing structure |
| CN111677870A (en) * | 2020-06-17 | 2020-09-18 | 中国电子科技集团公司第十四研究所 | Anti-impact mechanical seal automatic compensation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |