CN203847699U - Ear-shaped seal ring - Google Patents
Ear-shaped seal ring Download PDFInfo
- Publication number
- CN203847699U CN203847699U CN201420219853.XU CN201420219853U CN203847699U CN 203847699 U CN203847699 U CN 203847699U CN 201420219853 U CN201420219853 U CN 201420219853U CN 203847699 U CN203847699 U CN 203847699U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- circumferential step
- ear
- section
- cross
- 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 - Lifetime
Links
- 230000000694 effects Effects 0.000 abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
The utility model discloses an ear-shaped seal ring which comprises a seal ring body (1) with an ear-shaped outline. The cross section of the seal ring body (1) is rectangular. A first circumferential step (2) extending upwards is arranged along the inner edge of the seal ring body (1). A second circumferential step (3) extending downwards is arranged along the outer edge of the seal ring body (1). The cross section of the seal ring body is changed into the rectangular shape from a traditional round shape, so that the seal ring and a sealed part are in surface contact, the sealing area is enlarged, and the sealing effect is better compared with that of a seal ring with a round cross section; besides, the first circumferential step and the second circumferential step are additionally arranged, the steps can play a role in limiting, and the extending direction of the first circumferential step and the extending direction of the second circumferential step are just opposite, so that the seal ring is not prone to deformation caused by extrusion and displacement in the long-term using process. The ear-shaped seal ring has the advantages of being simple in structure, low in cost, capable of facilitating product assembly, good in sealing effect, durable and the like.
Description
Technical field
The utility model relates to a kind of seal ring, is specifically related to a kind of crescent gear pump ear shape seal ring.
Background technique
Seal ring is the Sealing for equipment such as machinery, pipelines.On plastic ompression molding machine crescent gear pump, be provided with ear shape seal ring, the cross section of existing ear shape seal ring is circular, and seal ring is that line contacts with parts surface of contact, and surface of contact is little, and sealing effect is undesirable.On the other hand, because seal ring is squeezed for a long time, be easy to deform, also cause sealing effect undesirable.
Model utility content
The purpose of this utility model is, for the problem of above-mentioned existence, provides a kind of good sealing effect, not yielding, is applicable to the ear shape seal ring of plastic ompression molding machine crescent gear pump.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows: a kind of ear shape seal ring, comprise the seal ring main body of ear shape profile, it is characterized in that: the cross section of described seal ring main body is rectangle, be provided with upwardly extending the first circumferential step along described seal ring main body inward flange, be provided with the second circumferential step to downward-extension along seal ring main body outward edge.
Further, the width of described the first circumferential step is greater than the width of the second circumferential step.
Further, the width of described seal ring body cross-section equals the first circumferential step and second week to step width sum.
The beneficial effects of the utility model: the cross section of seal ring main body is become to rectangle by traditional circle, make seal ring and obturator realize face and contact, increased sealing surface, sealing effect is with respect to the seal ring better effects if of circular cross-section; And set up first, second circumferential step, and step can play spacing effect, and the bearing of trend of first, second circumferential step is just in time contrary, makes seal ring in long-term using process, be difficult for being out of shape because of extruding displacement.Have simple in structurely, with low cost, facilitate assembling product, good sealing effect, the feature such as durable.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the rear view of Fig. 1.
Fig. 3 is the A-A sectional drawing of Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
In conjunction with Fig. 1---shown in Fig. 3, a kind of ear shape seal ring, comprise the seal ring main body 1 of ear shape profile, the cross section of seal ring main body 1 is rectangle, be provided with upwardly extending the first circumferential step 2 along seal ring main body 1 inward flange, be provided with the second circumferential step 3 to downward-extension along seal ring main body 1 outward edge.The cross section of seal ring main body is become to rectangle by traditional circle, make seal ring and obturator realize face and contact, increased sealing surface, sealing effect is with respect to the seal ring better effects if of circular cross-section; And set up first, second circumferential step, and step can play spacing effect, and the bearing of trend of first, second circumferential step is just in time contrary, makes seal ring in long-term using process, be difficult for being out of shape because of extruding displacement.
Further, the width of the first circumferential step 2 is greater than the width of the second circumferential step 3.
Further, the width of seal ring main body 1 cross section equals the first circumferential step 2 and the second circumferential step 3 width sums.
This ear shape seal ring is made with nitrile butadiene rubber.
Claims (3)
1. an ear shape seal ring, comprise the seal ring main body (1) of ear shape profile, it is characterized in that: the cross section of described seal ring main body (1) is rectangle, be provided with upwardly extending the first circumferential step (2) along described seal ring main body (1) inward flange, be provided with the second circumferential step (3) to downward-extension along seal ring main body (1) outward edge.
2. a kind of ear shape seal ring according to claim 1, is characterized in that: the width of described the first circumferential step (2) is greater than the width of the second circumferential step (3).
3. a kind of ear shape seal ring according to claim 1, is characterized in that: the width of described seal ring main body (1) cross section equals the first circumferential step (2) and the second circumferential step (3) width sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219853.XU CN203847699U (en) | 2014-04-30 | 2014-04-30 | Ear-shaped seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219853.XU CN203847699U (en) | 2014-04-30 | 2014-04-30 | Ear-shaped seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847699U true CN203847699U (en) | 2014-09-24 |
Family
ID=51560721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420219853.XU Expired - Lifetime CN203847699U (en) | 2014-04-30 | 2014-04-30 | Ear-shaped seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847699U (en) |
-
2014
- 2014-04-30 CN CN201420219853.XU patent/CN203847699U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |