CN202301917U - DAS hole-used combination seal ring - Google Patents
DAS hole-used combination seal ring Download PDFInfo
- Publication number
- CN202301917U CN202301917U CN2011204124876U CN201120412487U CN202301917U CN 202301917 U CN202301917 U CN 202301917U CN 2011204124876 U CN2011204124876 U CN 2011204124876U CN 201120412487 U CN201120412487 U CN 201120412487U CN 202301917 U CN202301917 U CN 202301917U
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- CN
- China
- Prior art keywords
- ring
- seal ring
- hole
- das
- elastic caoutchouc
- 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 a DAS hole-used combination seal ring, which includes an elastic rubber ring, a support ring arranged on both sides of the elastic rubber ring and a right-angled guide ring arranged on both sides of the support ring, wherein the elastic rubber ring, the support ring and the right-angled guide ring are all matched and connected mutually. As the combination seal ring provided by the utility model is adopted, the limitation about poor leakage and extrusion prevention of the conventional sealing element under heavy load is overcome, the sealing effect of the seal ring is improved, and the service life of the seal ring is prolonged.
Description
Technical field
The utility model relates to the Sealing field, is specifically related to the combined seal ring of piston in liquid, the Pneumatic Transmission and cylinder body.
Background technique
Along with domestic economy constantly develops; The national life level improves constantly; The industrial automatization of numerous domestic industrial and mining enterprise further improves; And sealed product performer key player in industrial automation, the quality of sealed product quality plays key effect aspect the fluid dynamic transmission in industrial automation.Particularly in concerning the national great type equipment of national economy, stable, the quality of sealed product performance reliable and to the tolerance of various flowing mediums all is very important.Simultaneously, in the great at home type key equipment, adopt the Sealing of developed countries import; Not only cost an arm and a leg; And the arrival cycle is long, during the apparatus maintenance transformation, causes heavy losses to enterprise, causes severe contamination to environment; Destroy natural, ecological, and imported product can not be dealt with problems sometimes.
At present, maximum Sealing of using on the market is an O type circle, and it produces prestressing force by the extrusion-deformation of when assembling and reaches sealing effect.Its feature is: simple in structure, withstand voltage height, volume are little.But because wearing and tearing are big in the movement process, be in deformation state for a long time, be prone to produce permanent deformation forfeiture elasticity, operating life is short.Though mostly adopt combining form now, be basic resilient support promptly with 0 type circle, add the seal ring of a material that usefulness is wear-resisting, corrosion resistant is lit up in 0 type circle outer ring, with the purpose that realizes increasing the service life.But, be that the combined seal ring that base growth is got up can not keep good sealing effect the long period equally with 0 type circle owing to keep away the deadly defect that produces permanent deformation in the unavoidable use as 0 RunddichtringO of basic resilient support.So adopt the liquid of this type sealing technique, pneumatic cylinder shorter working life.
Summary of the invention
Goal of the invention: the purpose of the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of good sealing effect is provided, long service life, anti-rotation, anti-extrusion combined seal ring.
Technological scheme: in order to solve the problems of the technologies described above; The described combined seal ring of the utility model, it comprises the elastic caoutchouc circle, is located at the support ring on these elastic caoutchouc circle both sides; And the right angle type guide ring that is located at these support ring both sides, the connection of working in coordination between them.
Said elastic caoutchouc circle top is provided with three seal lips, and middle is the thickest; Said elastic caoutchouc circle bottom is a jag shape structure.
Said support ring is a ladder-type structure, and one side is provided with salient point in said support ring bottom.
On said guide ring, be provided with axial groove.
Said elastic caoutchouc circle is a nitrile butadiene rubber.
Said support ring is nylon or polyurethane.
Said guide ring is nylon or polyoxymethylene.
The DAS hole is the double-action seal ring with combined seal ring, is made up of an elastic caoutchouc circle, two supporting rings and two guide rings.The elastic caoutchouc circle contains three seal lips, and middle lip is thicker to seal, and supporting ring plays the role of positioning; Come the support elastic body, prevent that it from the radial seal gap occurring, a side that contacts with elastomer has many projections in order to prevent seal ring when work rotation; Guide ring plays guiding and absorbs responsive to axial force; Guide ring all has axial groove up and down, makes pressure oil can flow through guide ring, makes the elasticity physical efficiency experience whole pressure and is quick release pressure changing direction.
Beneficial effect: the utility model compared with prior art; Its remarkable advantage is: adopt the seal ring of combining form, changed former Sealing under heavy duty, anti-leakage resists extrudes relatively poor limitation; This seal ring has also improved working life under the situation that improves sealing effect.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Wherein:
1, elastic caoutchouc circle; 2, support ring; 3, guide ring; 4, seal lip; 5, salient point; 6, axial groove
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 1, the described combined seal ring of the utility model, it comprises elastic caoutchouc circle 1, is located at the support ring 2 on these elastic caoutchouc circle 1 both sides, and the right angle type guide ring 3 that is located at these support ring 2 both sides, the connection of working in coordination between them; Said elastic caoutchouc circle 1 top is provided with three seal lips 4, and middle is the thickest; Said elastic caoutchouc circle 1 bottom is a jag shape structure; Said support ring 2 is ladder-type structures, and one side is provided with salient point 5 in said support ring 2 bottoms; On said guide ring 3, be provided with axial groove 6; Said elastic caoutchouc circle 1 is a nitrile butadiene rubber; Said support ring 2 is nylon or polyurethane; Said guide ring 3 is nylon or polyoxymethylene.The utility model adopts the seal ring of combining form, has changed former Sealing under heavy duty, and anti-leakage resists extrudes relatively poor limitation, and this seal ring has also improved working life under the situation that improves sealing effect.
Claims (7)
1.DAS combined seal ring is used in the hole; It is characterized in that: it comprises elastic caoutchouc circle (1); Be located at the support ring (2) on these elastic caoutchouc circle (1) both sides, and the right angle type guide ring (3) that is located at this support ring (2) both sides, the connection of working in coordination between them.
2. DAS according to claim 1 uses combined seal ring in the hole, it is characterized in that: said elastic caoutchouc circle (1) top is provided with three seal lips (4), and middle is the thickest; Said elastic caoutchouc circle (1) bottom is a jag shape structure.
3. DAS according to claim 1 uses combined seal ring in the hole, it is characterized in that: said support ring (2) is a ladder-type structure, and one side is provided with salient point (5) in said support ring (2) bottom.
4. DAS according to claim 1 uses combined seal ring in the hole, it is characterized in that: on said guide ring (3), be provided with axial groove (6).
5. DAS according to claim 1 uses combined seal ring in the hole, it is characterized in that: said elastic caoutchouc circle (1) is a nitrile butadiene rubber.
6. DAS according to claim 1 uses combined seal ring in the hole, it is characterized in that: said support ring (2) is nylon or polyurethane.
7. DAS according to claim 1 uses combined seal ring in the hole, it is characterized in that: said guide ring (3) is nylon or polyoxymethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204124876U CN202301917U (en) | 2011-10-26 | 2011-10-26 | DAS hole-used combination seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204124876U CN202301917U (en) | 2011-10-26 | 2011-10-26 | DAS hole-used combination seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301917U true CN202301917U (en) | 2012-07-04 |
Family
ID=46370816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204124876U Expired - Fee Related CN202301917U (en) | 2011-10-26 | 2011-10-26 | DAS hole-used combination seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367869A (en) * | 2011-10-26 | 2012-03-07 | 太仓市明宇密封件有限公司 | Combined seal ring for DAS hole |
-
2011
- 2011-10-26 CN CN2011204124876U patent/CN202301917U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367869A (en) * | 2011-10-26 | 2012-03-07 | 太仓市明宇密封件有限公司 | Combined seal ring for DAS hole |
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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: 20120704 Termination date: 20141026 |
|
| EXPY | Termination of patent right or utility model |