CN2069946U - Self-adjusting cavity sealing ring - Google Patents
Self-adjusting cavity sealing ring Download PDFInfo
- Publication number
- CN2069946U CN2069946U CN 90215783 CN90215783U CN2069946U CN 2069946 U CN2069946 U CN 2069946U CN 90215783 CN90215783 CN 90215783 CN 90215783 U CN90215783 U CN 90215783U CN 2069946 U CN2069946 U CN 2069946U
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- China
- Prior art keywords
- seal ring
- sealing ring
- utility
- model
- seal
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- 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.)
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- Details Of Reciprocating Pumps (AREA)
- Sealing Devices (AREA)
Abstract
The utility model relates to an O-typed self-tightening cavity sealing ring used for the seal of the machines of a reciprocating type plunger pump, etc. The utility model is characterized in that a cavity type annular structure is adopted, and a plurality of small holes are opened on the side of the inner ring of the O-typed self-tightening cavity sealing ring, so that an installing prepressing force can be reduced, and the friction force between a plunger piston and a sealing ring can be reduced, to achieve the goals that the service life of the sealing ring is extended and the occurrence of bite wound is avoided in the preliminary running stage, and the leakage quantity of working liquid can be reduced. The utility model has the advantages of simple structure, superior sealing performance and wide applications, and can be used for the seal of a high pressure plunger pump.
Description
The utility model provides a kind of cavity self tightening O RunddichtringO that is used for reciprocating plunger pump.
Reciprocating plunger pump is in operation and requires between seal ring and the plunger frictional force as far as possible little, and avoids moving the starting stage " biting " takes place.And in mechanically employed O type of reciprocating plunger pump one class or Y type rubber seal ubiquity operation starting stage " biting " takes place easily, seal ring short deficiency in working life at present.
The purpose of this utility model provides the cavity self tightening O RunddichtringO of a kind of favorable sealing property, long service life, is used for the reciprocating plunger pump sealing to substitute V-type or the O type rubber seal generally used now.
Main points of the present utility model are that existing solid O RunddichtringO is designed to cavity type, and are drilled with several apertures in the circle inboard.The frictional force that such design can reduce to install between precompression and plunger and the seal ring prolongs seal ring working life to reach, and avoids moving the starting stage purpose of " biting " takes place, and can reduce the leakage rate of working liquid body.
Below in conjunction with accompanying drawing the utility model is elaborated.
Accompanying drawing is a kind of example structure schematic representation of the utility model.
Among the figure, 1-fastening piece, 2-seal ring, 3-aperture, 4-plunger, the 5-pump housing.
With reference to accompanying drawing, seal ring of the present utility model (2) is the cavity type ring structure, and has several apertures (3) on inner ring one side (promptly by plunger one side) circumference, and the number in hole is decided according to the size of seal ring, and the aperture is generally φ 2-3mm.When plunger (4) is in operation when advancing, pump housing internal pressure increases, and the working liquid body that at this moment will have a little enters in the cavity of seal ring by the aperture (3) on the seal ring (2), and the cavity internal pressure increases along with the increase of fluid pressure in the pump housing.Owing to the reason of pressure reduction, make whole seal ring except that working liquid body one side of face, other direction all produces elastic expansion, and therefore seal ring (2) is to be in asymmetric state at work.Owing to expand, the rising with pressure increases seal ring (2) to the power of holding tightly of plunger (4), and frictional force also increases thereupon, and sealability is also strengthened thereupon.When plunger (4) is in operation when withdrawing from, pump housing internal pressure descends, and seal ring (2) cavity internal pressure also descends thereupon, and elastic expansion reduces thereupon, holds power tightly, frictional force also reduces thereupon.Therefore plunger (4) does not just rely on the increase of precompression with frictional force between the seal ring (2) with the power of holding tightly and increases, as long as but have under the less precompression situation, because of the self-tightening ability of seal ring with the change in pressure in the pump housing.
Shapes such as O type, rhombus can be adopted in the cross section of seal ring (2), are preferably rhombus, seal ring shown in accompanying drawing embodiment, and it is to be gluedd joint by upper and lower two measure-alike V-shaped seal rings to form, and for guaranteeing Joint strength, glueds joint the face width degree and should guarantee 〉=0.5mm.In addition, the lip chamfering of single V-shaped seal ring is generally about 60 °.
In order further to strengthen sealing effect of the present utility model, between best seal ring (2) and the plunger (4), and between the seal ring (2) and the pump housing (5) certain magnitude of interference is arranged, generally the former is 1-1.3mm, the latter is 0.2-0.4mm.The utility model adopts General Purpose Rubber or other elastic material to make, and also can adopt unlike material to be made into the seal ring of various corrosion-resistant requirements according to the corrosion property of working liquid body.
Remarkable advantage of the present utility model is to have prolonged sealing ring service life; Strengthened sealing effectiveness, reduced the leakage of hydraulic fluid, thereby alleviate hydraulic fluid to the corrosion in equipment, place; Alleviate maintenance workload, reduce cost of equipment maintenance. The utility model can also be used for high-pressure plunger pump, and purposes is more extensive.
Claims (4)
1, a kind of cavity self tightening 0 RunddichtringO is characterized in that seal ring (2) is the cavity type ring structure, and has aperture (3) in inner ring one side.
2, seal ring according to claim 1 is characterized in that seal ring (2) is to glued joint the seal ring that to form its cross section be rhombus by two measure-alike V-shaped seal rings.
3, seal ring according to claim 1 and 2, it is characterized in that between seal ring (2) and the plunger (4) and and the pump housing (5) between magnitude of interference is all arranged.
4, seal ring according to claim 3 it is characterized in that the magnitude of interference between seal ring (2) and the plunger (4) is 1-1.3mm, and the magnitude of interference between the pump housing (5) is 0.2-0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90215783 CN2069946U (en) | 1990-08-29 | 1990-08-29 | Self-adjusting cavity sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90215783 CN2069946U (en) | 1990-08-29 | 1990-08-29 | Self-adjusting cavity sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2069946U true CN2069946U (en) | 1991-01-23 |
Family
ID=4895023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90215783 Withdrawn CN2069946U (en) | 1990-08-29 | 1990-08-29 | Self-adjusting cavity sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2069946U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588590A (en) * | 2011-01-11 | 2012-07-18 | 无锡众扬金属制品有限公司 | O-shaped sealing ring for stainless steel pipe fittings |
| CN102720886A (en) * | 2011-03-30 | 2012-10-10 | 中核苏阀科技实业股份有限公司 | Transmission rod sealing structure for valve |
| CN103016744A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Ultralow-temperature high-pressure dynamic sealing structure |
| CN108662340A (en) * | 2018-05-24 | 2018-10-16 | 中国科学院力学研究所 | A kind of sealed expansion joint for pure air wind-tunnel |
| CN112392954A (en) * | 2019-08-16 | 2021-02-23 | 中国科学院大连化学物理研究所 | Double-triangular polytetrafluoroethylene sealing O ring |
| WO2022110292A1 (en) * | 2020-11-27 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Micro water pump and electronic apparatus |
-
1990
- 1990-08-29 CN CN 90215783 patent/CN2069946U/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588590A (en) * | 2011-01-11 | 2012-07-18 | 无锡众扬金属制品有限公司 | O-shaped sealing ring for stainless steel pipe fittings |
| CN102720886A (en) * | 2011-03-30 | 2012-10-10 | 中核苏阀科技实业股份有限公司 | Transmission rod sealing structure for valve |
| CN102720886B (en) * | 2011-03-30 | 2016-05-18 | 中核苏阀科技实业股份有限公司 | A kind of drive link hermetically-sealed construction of valve |
| CN103016744A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Ultralow-temperature high-pressure dynamic sealing structure |
| CN103016744B (en) * | 2012-12-08 | 2016-01-20 | 中国航天科技集团公司第六研究院第十一研究所 | Ultralow temperature high pressure dynamic sealing structure |
| CN108662340A (en) * | 2018-05-24 | 2018-10-16 | 中国科学院力学研究所 | A kind of sealed expansion joint for pure air wind-tunnel |
| CN112392954A (en) * | 2019-08-16 | 2021-02-23 | 中国科学院大连化学物理研究所 | Double-triangular polytetrafluoroethylene sealing O ring |
| WO2022110292A1 (en) * | 2020-11-27 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Micro water pump and electronic apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |