CN203322251U - Piston seal ring - Google Patents
Piston seal ring Download PDFInfo
- Publication number
- CN203322251U CN203322251U CN2013203782232U CN201320378223U CN203322251U CN 203322251 U CN203322251 U CN 203322251U CN 2013203782232 U CN2013203782232 U CN 2013203782232U CN 201320378223 U CN201320378223 U CN 201320378223U CN 203322251 U CN203322251 U CN 203322251U
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- CN
- China
- Prior art keywords
- seal ring
- seal
- groove
- ring
- piston
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing Devices (AREA)
Abstract
The utility model relates to a piston seal ring. The piston seal ring comprises a seal ring body; the cross section of the seal ring body is in a concave structure; an inner ring of the seal ring body is provided with a concave clamping groove for fixing the seal ring; the concave clamping groove is semicircular; the middle parts of two end surfaces of the seal ring body are provided with a U-shaped opening respectively, and upper sides and the lower sides of the U-shaped openings are provided with seal lips, and an O-shaped ring is sandwiched between each upper seal lip and each lower seal lip; an outer ring of the seal ring corresponding to the concave clamping groove is provided with a lubricating groove. According to the piston seal ring disclosed by the utility model, the inner side and the outer side of the seal ring are both provided with two seal lips, so that the seal ring enables the seal lips to be closed through the pressure of hydraulic oil during the reciprocating motion of a piston, the seal ring is prevented from being cut off, and oil seepage or oil leakage cannot be generated; moreover, the seal ring is provided with the lubricating groove, the lubricating groove can enable the seal lips to be at the lubricating state so as to protect the seal ring, and the service life of the seal ring is prolonged.
Description
Technical field
The utility model relates to a kind of seal ring, relates in particular to a kind of piston packing.
Background technique
At present, on the parts of automotive Diesel engine and to-and-fro motion work, all need to use special seal ring to be sealed in-oil cylinder hydraulic oil.Because the parts such as motor inner carrier, compression ring are reciprocating more frequent, air motion is violent, is easy to cause the damage of seal ring, makes whole in-oil cylinder sealing poor, causes engine failure.
Existing seal ring only is provided with a sealing lip, and when pressure strengthens, sealing effect is poorer, and in the course of the work due on cylinder wall or piston rod in without oily dry condition, damaging seal lip, reduced the working life of seal ring.Therefore, in order to address the above problem, the utility model provides a kind of and has strengthened its sealing by the two or more sealing lips of the arranged outside at seal ring, and is provided with lubrication groove on seal ring, by the lubricating grease stored up, realizes self-lubricating function.
Summary of the invention
The purpose of this utility model is in order to overcome the above-mentioned deficiency of prior art, provides a kind of not fragile, long service life, the piston packing of good sealing effect.
For solving the problems of the technologies described above, the utility model adopts following technological scheme to be:
A kind of piston packing, comprise the seal ring body, the cross section of sealing circle body is concave structure, the inner ring of sealing circle body is provided with the spill draw-in groove for fixed seal ring, this spill draw-in groove semicircular in shape, respectively be provided with a U-shaped opening at the middle part of seal ring body both ends of the surface, in the both sides up and down of U-shaped opening, be provided with sealing lip, accompany an O type circle between upper and lower two sealing lips; On corresponding the seal ring outer ring of spill draw-in groove, be provided with lubrication groove.
Further, the PTFE paster is posted at the lip place of described sealing lip.
Further, the quantity of described lubrication groove is 1～3.
The beneficial effects of the utility model are: piston packing of the present utility model all is provided with two sealing lips by the interior outside at seal ring, make it in the to-and-fro motion of piston, pressure by hydraulic oil makes the sealing lip closure, avoid seal ring cutting phenomenon to occur, guaranteed in oil cylinder not there will be oil impregnate or leakage of oil; And lubrication groove is set on seal ring, and can make sealing lip in lubricating status, reduced the frictional force of seal ring and cylinder wall, played the effect of protection seal ring, extended the working life of seal ring.In addition, guarantee the magnitude of interference to piston of both sides lip by the O type circle added in the middle of U-shaped opening, guarantee sealability.
The accompanying drawing explanation
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
As shown in Figure 1, a kind of piston packing of the present utility model, comprise the seal ring body, the cross section of sealing circle body is concave structure, the inner ring of sealing circle body is provided with the spill draw-in groove 1 for fixed seal ring, this spill draw-in groove 1 semicircular in shape, facilitate the installation of piston packing, respectively be provided with a U-shaped opening at the middle part of seal ring body both ends of the surface, both sides up and down at U-shaped opening are provided with sealing lip 2, the PTFE paster is posted at the lip place of sealing lip 2, accompanies an O type circle 4 between upper and lower two sealing lips 2; On corresponding the seal ring outer ring of spill draw-in groove 1, be provided with lubrication groove 3, the quantity of this lubrication groove 3 is 1～3.
Claims (3)
1. a piston packing, comprise the seal ring body, it is characterized in that: the cross section of seal ring body is concave structure, the inner ring of sealing circle body is provided with the spill draw-in groove for fixed seal ring, this spill draw-in groove semicircular in shape, respectively be provided with a U-shaped opening at the middle part of seal ring body both ends of the surface, in the both sides up and down of U-shaped opening, be provided with sealing lip, accompany an O type circle between upper and lower two sealing lips; On corresponding the seal ring outer ring of spill draw-in groove, be provided with lubrication groove.
2. a kind of piston packing according to claim 1, it is characterized in that: the PTFE paster is posted at the lip place of described sealing lip.
3. a kind of piston packing according to claim 1, it is characterized in that: the quantity of described lubrication groove is 1～3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203782232U CN203322251U (en) | 2013-06-28 | 2013-06-28 | Piston seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203782232U CN203322251U (en) | 2013-06-28 | 2013-06-28 | Piston seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322251U true CN203322251U (en) | 2013-12-04 |
Family
ID=49661603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203782232U Expired - Fee Related CN203322251U (en) | 2013-06-28 | 2013-06-28 | Piston seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742645A (en) * | 2013-12-20 | 2014-04-23 | 广西南宁德通网络有限公司 | Assembly-type seal ring |
-
2013
- 2013-06-28 CN CN2013203782232U patent/CN203322251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742645A (en) * | 2013-12-20 | 2014-04-23 | 广西南宁德通网络有限公司 | Assembly-type seal ring |
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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: 20131204 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |