CN104421429A - Self-adjusting pressure type rigid ring for mechanical seal - Google Patents
Self-adjusting pressure type rigid ring for mechanical seal Download PDFInfo
- Publication number
- CN104421429A CN104421429A CN201310363535.0A CN201310363535A CN104421429A CN 104421429 A CN104421429 A CN 104421429A CN 201310363535 A CN201310363535 A CN 201310363535A CN 104421429 A CN104421429 A CN 104421429A
- Authority
- CN
- China
- Prior art keywords
- ring
- line style
- helical groove
- rotating ring
- reflex line
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Abstract
The invention discloses a self-adjusting pressure type rigid ring for a mechanical seal. The self-adjusting pressure type rigid ring comprises a static ring and a dynamic ring; the static ring or the dynamic ring comprises a pressure spring; the end surfaces of the static ring and the dynamic ring are combined in the effect of the pressure spring to form a sealing surface; a reflex linear spiral groove is arranged in the surface, namely, the inner surface or the outer surface of the dynamic ring; or the reflex linear spiral grooves are arranged in both the inner surface or the outer surface of the dynamic ring. According to the self-adjusting pressure type rigid ring for the mechanical seal, the reflex linear spiral groove is arranged in the inner surface or the outer surface of the dynamic ring, fluid rotating at a high speed can be generated in the periphery or inside the sealing surface when a device runs, and thus the pressure difference between the inner end and the outer end of the sealing surface can be reduced, and as a result, the leakage of a sealing medium can be greatly reduced, the pressure of an axial pressure spring of the dynamic ring or the static ring can be lowered down, and the cost of manufacturing of the pressure spring is decreased.
Description
Technical field
The present invention relates to mechanical seal field, particularly one from supercharging to reduce pressure mechanical sealing hard ring.
Background technique
Mechanical seal product, at stationary ring, rotating ring abrasive end face place (i.e. sealing contact surface place), sealing medium is due to pressure difference, radially can permeate to sealing surface opposite side in the very tiny gap of sealing surface, thus cause leakage problem, and leakage problem just mechanical seal product want to do one's utmost to avoid.
In view of mechanical seal is at the leakage problem at seal face place, the way extensively adopted in industry is the pressure increasing abrasive end face, namely the pressure of the pressure spring device to stationary ring or rotating ring axial pressure is strengthened, make that stationary ring and rotating ring rubbing surface exist a great axial pressure all the time, thus reach hinder sealing medium ask the object of radially leaking from rubbing surface.
The conventional method adopted in above-mentioned industry, makes to there is a great pressure between the stationary ring of mechanical seal and rotating ring rubbing surface, hinders sealing medium from the leakage through radial direction between rubbing surface with this.But just because of the immense pressure existed between rubbing surface, make mechanical seal when work, because frictional force produces a large amount of heats between the rotating ring of High Rotation Speed and actionless stationary ring, thus, the cooling circuit that mechanical seal often must be installed independently, flow is enough large cools abrasive end face, otherwise mechanical seal product is easy to the high heat because abrasive end face produces and burns.And in actual use, it is of common occurrence that the mechanical seal high heat caused due to cooling system problem burns case, so just be absorbed in a vicious circle: leak and the pressure of intensified pressure spring of having to for reducing sealing medium, strengthening spring pressure then must cause abrasive end face to produce high heat, thus design must be impelled to use the hard ring of friction of high heat conduction, high quality, high cost, and more accurate end face glossing, also need to design large discharge, reliable cooling unit simultaneously, like this, the volume of mechanical seal product also does larger and larger naturally.
To sum up, the mechanical seal product of prior art only improves the sealability of product from material and processing technology, and reduces sealing surface gap by increasing spring pressure, there is the drawback being difficult to overcome, make the cost of product high and bulky, be unfavorable for applying of small-sized sealing part.
Summary of the invention
For solving the problems of the technologies described above, the invention provides one from supercharging from reducing pressure mechanical sealing hard ring, to increase axial pressure and the flow velocity of fluid, reducing the radial pressure to sealing surface, thus effectively reducing the leakage of sealing surface.
For achieving the above object, technological scheme of the present invention is as follows:
One from reducing pressure mechanical sealing hard ring from supercharging, comprises stationary ring and rotating ring, also comprises pressure spring, and the end face of described stationary ring and rotating ring is fitted and formed sealing surface under the effect of described pressure spring,
The surface of described rotating ring is provided with reflex line style helical groove, and described reflex line style helical groove is arranged on internal surface or the outer surface of described rotating ring, or described reflex line style helical groove is arranged on internal surface and the outer surface of described rotating ring simultaneously.
Preferably, described reflex line style helical groove is arranged on internal surface and the outer surface of described rotating ring simultaneously.
Preferably, the reflex line style helical groove of described rotating ring outer surface is identical with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
Preferably, the reflex line style helical groove of described rotating ring outer surface is contrary with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
Preferably, described reflex line style helical groove is also arranged on the end face of described stationary ring and rotating ring, and the Hand of spiral of the reflex line style helical groove at the sealing surface place that described end face is formed is radially from outside to inside.
Preferably, described reflex line style helical groove is also arranged on the outer surface of described rotating ring and described sealing surface place simultaneously.
Preferably, the reflex line style helical groove of described rotating ring outer surface is identical with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
Preferably, the reflex line style helical groove of described rotating ring outer surface is contrary with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
Preferably, the cross section of described reflex line style helical groove be only rectangular, semicircle, any one in triangle, arc.
Preferably, two or more combination arbitrarily in the rectangular in cross-section of described reflex line style helical groove, semicircle, triangle, arc.
Pass through technique scheme, one provided by the invention from supercharging to reduce pressure mechanical sealing hard ring, it passes through at rotating ring internal surface, or reflex line style helical groove is set at outer surface or sealing surface place, equipment in the running, sealing surface periphery or inside can form the fluid of High Rotation Speed, thus the pressure difference at two ends inside and outside reduction sealing surface, and then significantly reduce the leakage of sealing medium, and then just reduce the pressure of axial pressure spring of rotating ring or stationary ring, and then reduce the fabricating cost of pressure spring; Meanwhile, the fluid of High Rotation Speed also serves the effect in good coolant seal face, and then simplifies independent cooling circuit and even can cancel independent cooling circuit, also reduces the installation dimension of mechanical sealing element while saving fabricating cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described.
Fig. 1 is for the one disclosed in embodiment is from supercharging decompression mechanical sealing hard ring generalized section certainly;
Fig. 2 is provided with the rotating ring schematic perspective view of reflex line style helical groove for a kind of internal surface disclosed in embodiment and outer surface;
Fig. 3 is provided with the rotating ring schematic cross-section figure of reflex line style helical groove for a kind of internal surface disclosed in embodiment;
The rotating ring cross section that Fig. 4 is provided with reflex line style helical groove for a kind of internal surface disclosed in embodiment and outer surface is illustrated.
Numeral in figure:
11. stationary ring 12. rotating ring 13. pressure springs
14. sealing surface 15. reflex line style helical grooves
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described.
With reference to figure 1, one provided by the invention from supercharging to reduce pressure mechanical sealing hard ring, comprise stationary ring 11 and rotating ring 12, also comprise pressure spring 13, the end face of stationary ring 11 and rotating ring 12 is fitted and is formed sealing surface 14 under the effect of pressure spring 13, the surface of rotating ring 12 is provided with reflex line style helical groove 15, and reflex line style helical groove 15 is arranged on internal surface or the outer surface of rotating ring 12, or reflex line style helical groove 15 is arranged on internal surface and the outer surface of rotating ring 12 simultaneously.
With reference to figure 2, reflex line style helical groove 15 is arranged on internal surface and the outer surface of rotating ring 12 simultaneously, and the reflex line style helical groove 15 of rotating ring 12 outer surface is identical or contrary with reflex line style helical groove 15 Hand of spiral of rotating ring 12 internal surface.
Reflex line style helical groove 15 is also arranged on the end face of stationary ring 11 and rotating ring 12 simultaneously, the Hand of spiral of the reflex line style helical groove 15 at sealing surface 14 place that end face is formed is radially from outside to inside, and the reflex line style helical groove 15 of rotating ring 12 outer surface is identical or contrary with reflex line style helical groove 15 Hand of spiral of rotating ring 12 internal surface.
With reference to figure 3 and 4, the combination of any one or more in the rectangular in cross-section of reflex line style helical groove 15, semicircle, triangle, arc.
The gun barrel rifle in firearms field is had accelerator and ejects thorax speed and make the principle of bullet generation oneself rotation be applied on the rotating ring 12 of mechanical seal by the present invention, namely on rotating ring 12 internal surface of mechanical seal product or outer surface or sealing surface 14, making entirety is for helical and cross section can be rectangle, circular, triangle, the reflex line style helical groove 15 of the various shape of inequilateral shape etc., its working principle is: have the rotating ring 12 of reflex line style helical groove 15 when following main shaft High Rotation Speed, its internal surface or outer surface or in, the reflex line style helical groove 15 that outer surface all has can force rotating ring 12 inside (or outside when rotated, or inside and outside all has) sealing medium (or cooling medium) accelerated motion and produce oneself rotate, thus, sealing medium will be formed at a high speed, flow direction is axially and perpendicular to the fluid of sealing surface 14, like this, sealing surface 14 is radial, namely along on the direction of sealing surface 14, pressure difference between sealing medium and sealing surface 14 opposite side can reduce greatly, thus reduce the leakage of sealing medium significantly, or adopt special supplementary structure, also the rotating ring 12 adopting rifle principle to make can be utilized, form an anti-pressure fluid at sealing surface 14 place, thus greatly reduce the pressure difference of sealing medium and sealing surface 14 opposite side, and then reach the object significantly reducing sealing medium leakage rate.
To be apparent for those skilled in the art to the multiple amendment of above-described embodiment, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.
Claims (10)
1. from supercharging to reduce pressure a mechanical sealing hard ring, comprise stationary ring and rotating ring, also comprise pressure spring, the end face of described stationary ring and rotating ring fit formation sealing surface under the effect of described pressure spring, it is characterized in that,
The surface of described rotating ring is provided with reflex line style helical groove, and described reflex line style helical groove is arranged on internal surface or the outer surface of described rotating ring, or described reflex line style helical groove is arranged on internal surface and the outer surface of described rotating ring simultaneously.
2. one according to claim 1 is from supercharging from reducing pressure mechanical sealing hard ring, and it is characterized in that, described reflex line style helical groove is arranged on internal surface and the outer surface of described rotating ring simultaneously.
3. one according to claim 2 is from supercharging from reducing pressure mechanical sealing hard ring, and it is characterized in that, the reflex line style helical groove of described rotating ring outer surface is identical with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
4. one according to claim 2 is from supercharging from reducing pressure mechanical sealing hard ring, and it is characterized in that, the reflex line style helical groove of described rotating ring outer surface is contrary with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
5. one according to claim 1 from supercharging to reduce pressure mechanical sealing hard ring, it is characterized in that, described reflex line style helical groove is also arranged on the end face of described stationary ring and rotating ring, and the Hand of spiral of the reflex line style helical groove at the sealing surface place that described end face is formed is radially from outside to inside.
6. one according to claim 1 is from supercharging from reducing pressure mechanical sealing hard ring, and it is characterized in that, described reflex line style helical groove is also arranged on the outer surface of described rotating ring and described sealing surface place simultaneously.
7. one according to claim 6 is from supercharging from reducing pressure mechanical sealing hard ring, and it is characterized in that, the reflex line style helical groove of described rotating ring outer surface is identical with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
8. one according to claim 6 is from supercharging from reducing pressure mechanical sealing hard ring, and it is characterized in that, the reflex line style helical groove of described rotating ring outer surface is contrary with the reflex line style helical groove Hand of spiral of described rotating ring internal surface.
9. the one according to any one of claim 1 to 8 to reduce pressure mechanical sealing hard ring from supercharging, is characterized in that, the cross section of described reflex line style helical groove is only rectangular, semicircle, any one in triangle, arc.
10. the one according to any one of claim 1 to 8, is characterized in that to reduce pressure mechanical sealing hard ring from supercharging, two or more combination arbitrarily in the rectangular in cross-section of described reflex line style helical groove, semicircle, triangle, arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363535.0A CN104421429A (en) | 2013-08-20 | 2013-08-20 | Self-adjusting pressure type rigid ring for mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363535.0A CN104421429A (en) | 2013-08-20 | 2013-08-20 | Self-adjusting pressure type rigid ring for mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104421429A true CN104421429A (en) | 2015-03-18 |
Family
ID=52971231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310363535.0A Pending CN104421429A (en) | 2013-08-20 | 2013-08-20 | Self-adjusting pressure type rigid ring for mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104421429A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221474A (en) * | 2015-07-08 | 2016-01-06 | 上海舜发重型机械设备制造有限公司 | A kind of inwall has seal ring and the production method thereof of sealing configuration |
| CN106641272A (en) * | 2016-12-28 | 2017-05-10 | 中国科学院合肥物质科学研究院 | Bi-directional movable shaft seal using liquid for isolation |
| CN107956878A (en) * | 2017-12-28 | 2018-04-24 | 温州市天成密封件制造有限公司 | Periphery wave V-shaped ring mechanical seal |
Citations (6)
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|---|---|---|---|---|
| JPS56148695A (en) * | 1980-04-21 | 1981-11-18 | Matsushita Electric Ind Co Ltd | Rotary type fluid machine |
| CN2138206Y (en) * | 1992-02-27 | 1993-07-14 | 石油大学(华东) | Liquid moving sealing ring with arc groove |
| CN2166279Y (en) * | 1993-07-23 | 1994-05-25 | 石油大学(华东) | Sealing moving ring for gas medium |
| JP2010265921A (en) * | 2009-05-12 | 2010-11-25 | Nippon Pillar Packing Co Ltd | Noncontact sealing device |
| CN102758918A (en) * | 2012-06-28 | 2012-10-31 | 北京航空航天大学 | Gas cylinder surface sealing device with cantilever support and spiral chute |
| CN203670768U (en) * | 2013-08-20 | 2014-06-25 | 苏州恒扬精密机械有限公司 | Self-pressurization and self-depressurization mechanical seal hard ring |
-
2013
- 2013-08-20 CN CN201310363535.0A patent/CN104421429A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148695A (en) * | 1980-04-21 | 1981-11-18 | Matsushita Electric Ind Co Ltd | Rotary type fluid machine |
| CN2138206Y (en) * | 1992-02-27 | 1993-07-14 | 石油大学(华东) | Liquid moving sealing ring with arc groove |
| CN2166279Y (en) * | 1993-07-23 | 1994-05-25 | 石油大学(华东) | Sealing moving ring for gas medium |
| JP2010265921A (en) * | 2009-05-12 | 2010-11-25 | Nippon Pillar Packing Co Ltd | Noncontact sealing device |
| CN102758918A (en) * | 2012-06-28 | 2012-10-31 | 北京航空航天大学 | Gas cylinder surface sealing device with cantilever support and spiral chute |
| CN203670768U (en) * | 2013-08-20 | 2014-06-25 | 苏州恒扬精密机械有限公司 | Self-pressurization and self-depressurization mechanical seal hard ring |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221474A (en) * | 2015-07-08 | 2016-01-06 | 上海舜发重型机械设备制造有限公司 | A kind of inwall has seal ring and the production method thereof of sealing configuration |
| CN106641272A (en) * | 2016-12-28 | 2017-05-10 | 中国科学院合肥物质科学研究院 | Bi-directional movable shaft seal using liquid for isolation |
| CN106641272B (en) * | 2016-12-28 | 2018-10-02 | 中国科学院合肥物质科学研究院 | A kind of two-way moving axis using liquid isolation seals |
| CN107956878A (en) * | 2017-12-28 | 2018-04-24 | 温州市天成密封件制造有限公司 | Periphery wave V-shaped ring mechanical seal |
| CN107956878B (en) * | 2017-12-28 | 2024-02-02 | 温州市天成密封件制造有限公司 | Peripheral wave-shaped sealing ring mechanical seal |
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Application publication date: 20150318 |
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| WD01 | Invention patent application deemed withdrawn after publication |