CN216343918U - Integrated two-way sealed piston seal ring - Google Patents
Integrated two-way sealed piston seal ring Download PDFInfo
- Publication number
- CN216343918U CN216343918U CN202122614636.3U CN202122614636U CN216343918U CN 216343918 U CN216343918 U CN 216343918U CN 202122614636 U CN202122614636 U CN 202122614636U CN 216343918 U CN216343918 U CN 216343918U
- Authority
- CN
- China
- Prior art keywords
- lip
- sealing
- static
- medium
- 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.)
- Active
Links
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses an integrated bidirectional sealing piston sealing ring, which solves the technical problem of large overall structure of a piston product caused by large space occupation in the prior art. The utility model comprises a static sealing part tightly attached to the inner wall of a piston embedding groove and a dynamic sealing part which is of an integrated structure with the static sealing part and tightly attached to the inner wall of a cylinder body; the dynamic seal part comprises a first dynamic lip distributed towards the first medium and used for sealing the medium and a second dynamic lip distributed towards the second medium and used for sealing the medium. The piston sealing device has the advantages of simple structure, scientific and reasonable design and convenient use, can realize the independent sealing of two ends of the piston through one sealing ring, can effectively reduce the space occupancy rate of the bidirectional sealing part, is favorable for the miniaturization of the piston product structure, and simultaneously saves time and labor during the installation.
Description
Technical Field
The utility model belongs to the technical field of sealing structures, and particularly relates to an integrated bidirectional sealing piston sealing ring.
Background
The piston generally reciprocates in the cylinder body, and under many working conditions, the media at the two ends of the piston are different, so that the piston is required to have a bidirectional sealing function during reciprocating operation, namely, the media at the two ends of the piston are separately sealed. The traditional piston sealing ring is generally Y-shaped, when media at two ends of the piston are required to be sealed separately, only one sealing ring embedding groove can be formed at each of two ends of the piston, and the media at two ends of the piston are sealed separately through two Y-shaped piston sealing rings. The space of the sealing part occupies a large area, which is not beneficial to the miniaturization of the piston product structure; because the media at the two ends of the piston are different, the matched Y-shaped piston sealing rings correspondingly have small differences, so that the Y-shaped piston sealing rings are easy to be confused during installation, the installation positions of the Y-shaped piston sealing rings are not right, the sealing effect is influenced, and time and labor are wasted during installation. The effect of assembling the conventional Y-shaped piston seal ring at both ends of the piston is shown in fig. 4.
Therefore, it is an urgent need to solve the above technical problems by designing an integrated two-way sealing piston ring to solve at least some of the above technical problems.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: an integrated two-way sealing piston seal ring is provided to solve at least some of the above technical problems.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the integrated bidirectional sealing piston sealing ring comprises a static sealing part tightly attached to the inner wall of the piston embedding groove and a dynamic sealing part which is of an integrated structure with the static sealing part and tightly attached to the inner wall of the cylinder body; the dynamic seal part comprises a first dynamic lip distributed towards the first medium and used for sealing the medium and a second dynamic lip distributed towards the second medium and used for sealing the medium.
Further, the static sealing part comprises a first static lip and a second static lip, wherein the first static lip is matched with the first lip and used for being matched with the first lip to seal a first medium, and the second static lip is matched with the second movable lip and used for being matched with the second movable lip to seal a second medium.
Furthermore, the first movable lip, the second movable lip, the first static lip and the second static lip are distributed in an X shape.
Furthermore, the first movable lip is rounded, and the range of the rounded angle R is 1 and more than or equal to R and more than or equal to 0.3.
Furthermore, the angle beta of the front lip of the first movable lip is more than or equal to 35 degrees within the range of 40 degrees and more than or equal to beta, and the angle alpha of the rear lip of the first movable lip is more than or equal to 25 degrees within the range of 35 degrees and more than or equal to alpha.
Furthermore, the angle beta 1 of the front lip of the second movable lip is more than or equal to 40 degrees and more than or equal to 45 degrees, and the angle alpha 1 of the rear lip of the second movable lip is more than or equal to 15 degrees and more than or equal to 25 degrees.
Further, the width A1 between the first movable lip and the first static lip conforms to 15% or more and the compression ratio is 8% or more.
Further, the width A2 between the second movable lip and the second static lip conforms to 17% and the compression ratio is more than or equal to 11%.
Further, the height H1 of the static seal portion is equal to the gasket fitting groove width Hmin-0.5 mm.
Furthermore, the height H2 of the dynamic sealing part is equal to the width Hmin-0.8-1.2 mm of the sealing ring embedding groove.
Compared with the prior art, the utility model has the following beneficial effects:
the piston sealing device has the advantages of simple structure, scientific and reasonable design and convenient use, can realize the independent sealing of two ends of the piston through one sealing ring, can effectively reduce the space occupancy rate of the bidirectional sealing part, is favorable for the miniaturization of the piston product structure, and simultaneously saves time and labor during the installation.
According to the utility model, the first movable lip corresponds to an air medium, the second movable lip corresponds to an oil medium, the first movable lip is rounded, the range of the rounded angle R is 1 or more, R is more than or equal to 0.3, and the second movable lip is a sharp angle.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a plot of various parameter designations according to the present invention.
Fig. 3 is a view of the present invention assembled to a piston.
Fig. 4 is a view of a prior art double-Y-shaped sealing ring for realizing a bidirectional sealing structure of a piston.
Wherein, the names corresponding to the reference numbers are:
1-static sealing part, 2-dynamic sealing part, 3-first dynamic lip, 4-second dynamic lip, 5-first static lip and 6-second static lip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to an inner wall of a piston insert groove, and a dynamic seal portion 2 which is integrated with the static seal portion 1 and tightly attached to an inner wall of a cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium.
The piston sealing device has the advantages of simple structure, scientific and reasonable design and convenient use, can realize the independent sealing of two ends of the piston through one sealing ring, can effectively reduce the space occupancy rate of the bidirectional sealing part, is favorable for the miniaturization of the piston product structure, and simultaneously saves time and labor during the installation.
Example 2, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The static sealing part 1 comprises a first static lip 5 which is matched with the first lip 3 and is used for being matched with the first lip 3 to seal a first medium, and a second static lip 6 which is matched with the second movable lip 4 and is used for being matched with the second movable lip 4 to seal a second medium.
In this example 2, the structure of the static seal part 1 is further defined on the basis of the example 1, and the static seal part 1 comprises a first static lip 5 adapted to the first lip 3 for sealing the first medium in cooperation with the first lip 3, and a second static lip 6 adapted to the second dynamic lip 4 for sealing the second medium in cooperation with the second dynamic lip 4. By the design, the sealing performance can be effectively enhanced.
Example 3, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The static sealing part 1 comprises a first static lip 5 which is matched with the first lip 3 and is used for being matched with the first lip 3 to seal a first medium, and a second static lip 6 which is matched with the second movable lip 4 and is used for being matched with the second movable lip 4 to seal a second medium. The first movable lip 3, the second movable lip 4, the first static lip 5 and the second static lip 6 are distributed in an X shape.
In this example 3, on the basis of the example 2, the distribution structures of the static seal part 1 and the dynamic seal part 2 are further defined, and the first dynamic lip 3, the second dynamic lip 4, the first static lip 5 and the second static lip 6 are distributed in an X shape. By the design, the overall space occupancy rate of the sealing ring can be effectively reduced on the basis of ensuring the sealing performance, and the piston product structure is miniaturized.
Example 4, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The first movable lip 3 is rounded, and the range of the rounded angle R is 1 and more than or equal to R and more than or equal to 0.3.
In the embodiment 4, on the basis of the embodiment 1, the structure of the first movable lip 3 is further limited, the first movable lip 3 is rounded, and the range of the round angle R is 1 and more than or equal to R and more than or equal to 0.3. According to the utility model, the first moving lip is rounded, so that the phenomenon that engine oil on the side of the second moving lip is pumped to the first moving lip to generate oil gloss can be effectively avoided, and the sealing effect is further ensured. Design into fillet R respectively with first moving lip 3 0.5 and closed angle, carry out the legal scholar functional test simultaneously, there is oily in the first moving lip 3 department of closed angle, and the analysis reason has been caused because the first moving lip 3 of closed angle has been taken out the machine oil of oil side to the air side. The first movable lip 3 with the rounded corner R being 0.5 has no oil.
Example 5, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The front lip angle beta range of the first movable lip 3 is more than or equal to 40 degrees and more than or equal to 35 degrees, and the rear lip angle alpha range of the first movable lip 3 is more than or equal to 35 degrees and more than or equal to 25 degrees.
In the present example 5, the structure of the first movable lip 3 is further defined based on the example 1, the front lip angle β of the first movable lip 3 ranges from 40 ° ≧ β ≧ 35 °, and the rear lip angle α of the first movable lip 3 ranges from 35 ° ≧ α ≧ 25 °. By the design, the sealing effect at the first movable lip 3 can be further ensured.
Example 6, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The front lip angle beta 1 of the second movable lip 4 is more than or equal to 40 degrees and more than or equal to 45 degrees, and the rear lip angle alpha 1 of the second movable lip 4 is more than or equal to 15 degrees and more than or equal to alpha 1 and more than or equal to 25 degrees.
In the present example 6, the structure of the second movable lip 4 is further defined on the basis of the example 1, the front lip angle β 1 of the second movable lip 4 ranges from 40 ° ≧ β 1 ≧ 45 °, and the rear lip angle α 1 of the second movable lip 4 ranges from 15 ° ≧ α 1 ≧ 25 °. By the design, the sealing effect at the second movable lip 4 can be further ensured.
Example 7, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The static sealing part 1 comprises a first static lip 5 which is matched with the first lip 3 and is used for being matched with the first lip 3 to seal a first medium, and a second static lip 6 which is matched with the second movable lip 4 and is used for being matched with the second movable lip 4 to seal a second medium. The width A1 between the first moving lip 3 and the first static lip 5 conforms to 15% or more and a compression ratio or more than 8%. The maximum compression ratio is (the maximum value of the width of the sealing ring-the minimum value of the width of the embedding groove of the sealing ring)/the maximum value of the width of the sealing ring; the minimum compression ratio is (minimum sealing ring width-maximum sealing ring embedding groove width)/minimum sealing ring width.
In the example 7, on the basis of the example 2, the distribution structure between the first movable lip 3 and the first static lip 5 is further defined, and the width A1 between the first movable lip 3 and the first static lip 5 meets the requirement that the compression ratio is more than or equal to 8 percent and more than or equal to 15 percent. By the design, the overall space occupancy rate of the sealing ring can be effectively reduced on the basis of ensuring the sealing performance, and the piston product structure is miniaturized.
Example 8, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The static sealing part 1 comprises a first static lip 5 which is matched with the first lip 3 and is used for being matched with the first lip 3 to seal a first medium, and a second static lip 6 which is matched with the second movable lip 4 and is used for being matched with the second movable lip 4 to seal a second medium. The width A2 between the second movable lip 4 and the second stationary lip 6 is equal to or greater than 17% and the compression ratio is equal to or greater than 11%. The maximum compression ratio is (the maximum value of the width of the sealing ring-the minimum value of the width of the embedding groove of the sealing ring)/the maximum value of the width of the sealing ring; the minimum compression ratio is (minimum sealing ring width-maximum sealing ring embedding groove width)/minimum sealing ring width.
In the embodiment 8, on the basis of the embodiment 2, the distribution structure between the second movable lip 4 and the second static lip 6 is further limited, and the width A2 between the second movable lip 4 and the second static lip 6 meets the requirement that the compression ratio is more than or equal to 11 percent and more than or equal to 17 percent. By the design, the overall space occupancy rate of the sealing ring can be effectively reduced on the basis of ensuring the sealing performance, and the piston product structure is miniaturized.
Example 9, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The height H1 of the static seal part 1 is equal to the width Hmin-0.5mm of the seal ring embedding groove.
In example 9, the structure of the static seal part 1 is further limited to example 1, and the height H1 of the static seal part 1 is equal to the gasket fitting groove width Hmin-0.5 mm. By the design, the overall space occupancy rate of the sealing ring can be effectively reduced on the basis of ensuring the sealing performance, and the piston product structure is miniaturized.
Example 10, as shown in fig. 1 to 3, the integrated two-way sealing piston seal ring provided by the present invention includes a static seal portion 1 tightly attached to the inner wall of the piston insert groove, and a dynamic seal portion 2 integrated with the static seal portion 1 and tightly attached to the inner wall of the cylinder; the dynamic seal 2 comprises a first dynamic lip 3 which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip 4 which is distributed towards the second medium and is used for sealing the medium. The height H2 of the dynamic sealing part 2 is equal to the width Hmin-0.8-1.2 mm of the sealing ring embedding groove.
In example 10, the structure of the dynamic seal portion 2 is further limited to example 1, and the height H2 of the dynamic seal portion 2 is equal to the gasket fitting groove width Hmin-0.8 to 1.2 mm. By the design, the overall space occupancy rate of the sealing ring can be effectively reduced on the basis of ensuring the sealing performance, and the piston product structure is miniaturized.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and certainly not to limit the patent scope of the present invention; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; that is, the technical problems to be solved by the present invention, which are not substantially changed or supplemented by the spirit and the concept of the main body of the present invention, are still consistent with the present invention and shall be included in the scope of the present invention; in addition, the technical scheme of the utility model is directly or indirectly applied to other related technical fields, and the technical scheme is included in the patent protection scope of the utility model.
Claims (10)
1. The integrated bidirectional-sealing piston sealing ring is characterized by comprising a static sealing part (1) tightly attached to the inner wall of a piston embedding groove and a dynamic sealing part (2) which is of an integrated structure with the static sealing part (1) and tightly attached to the inner wall of a cylinder body; the dynamic seal (2) comprises a first dynamic lip (3) which is distributed towards the first medium and is used for sealing the medium and a second dynamic lip (4) which is distributed towards the second medium and is used for sealing the medium.
2. The one-piece, double-sealing piston seal according to claim 1, characterized in that the static seal (1) comprises a first static lip (5) adapted to the first dynamic lip (3) for sealing a first medium in cooperation with the first dynamic lip (3), and a second static lip (6) adapted to the second dynamic lip (4) for sealing a second medium in cooperation with the second dynamic lip (4).
3. The integrated, two-way sealing piston ring according to claim 2, characterized in that the first moving lip (3), the second moving lip (4), the first static lip (5) and the second static lip (6) are distributed in an X-shape.
4. The integrated two-way sealing piston seal ring according to claim 1, characterized in that the first movable lip (3) is rounded and the radius R is in the range of 1. gtoreq.R. gtoreq.0.3.
5. The integrated two-way sealing piston-seal ring according to claim 1, characterized in that the front lip angle β of the first movable lip (3) ranges from 40 ° ≧ β ≧ 35 °, and the rear lip angle α of the first movable lip (3) ranges from 35 ° ≧ α ≧ 25 °.
6. The integrated, two-way sealing piston-seal ring according to claim 1, characterized in that the front lip angle β 1 of the second moving lip (4) ranges from 40 ° ≧ β 1 ≧ 45 °, and the rear lip angle α 1 of the second moving lip (4) ranges from 15 ° ≧ α 1 ≧ 25 °.
7. The one-piece, double-sealing piston seal according to claim 2, characterized in that the width a1 between the first moving lip (3) and the first static lip (5) conforms to a compression ratio ≧ 8% 15%.
8. The one-piece, double-sealing piston seal according to claim 2, characterized in that the width a2 between the second moving lip (4) and the second static lip (6) meets 17% ≧ compression ≧ 11%.
9. The one-piece, two-way sealing piston-seal ring according to claim 1, characterized in that the height H1 of the static seal (1) is the seal ring groove width Hmin-0.5 mm.
10. The integrated two-way sealing piston seal ring according to claim 1, wherein the height H2 of the dynamic seal part (2) is equal to the seal ring embedding groove width Hmin-0.8-1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122614636.3U CN216343918U (en) | 2021-10-28 | 2021-10-28 | Integrated two-way sealed piston seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122614636.3U CN216343918U (en) | 2021-10-28 | 2021-10-28 | Integrated two-way sealed piston seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216343918U true CN216343918U (en) | 2022-04-19 |
Family
ID=81129759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122614636.3U Active CN216343918U (en) | 2021-10-28 | 2021-10-28 | Integrated two-way sealed piston seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216343918U (en) |
-
2021
- 2021-10-28 CN CN202122614636.3U patent/CN216343918U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216343918U (en) | Integrated two-way sealed piston seal ring | |
| CN202348816U (en) | Ultrahigh-pressure hydraulic cylinder with sealing follow-up rings | |
| CN210461689U (en) | Combined sealing element for piston rod | |
| CN216768194U (en) | Oil seal for high-pressure-resistant shock absorber | |
| CN212838715U (en) | Piston rod combined sealing ring | |
| CN209370457U (en) | Air compressor shaft end reduced pressure sealing structure | |
| CN201475308U (en) | Piston ring | |
| JPH0529391Y2 (en) | ||
| CN211474286U (en) | Piston structure with variable cross-section sealing leather cup structure | |
| CN210484613U (en) | Single-acting pneumatic piston rod sealing element | |
| CN203670023U (en) | Oil injector, diesel engine and sealing part for oil injector | |
| CN216198875U (en) | Diaphragm compressor | |
| CN203098210U (en) | Compressor air cylinder | |
| CN215333033U (en) | Low-friction valve oil seal | |
| CN218440624U (en) | Anti-deformation packing sealing structure | |
| CN2396194Y (en) | Chrome-plating seal piston ring | |
| CN217898752U (en) | Piston rod combined sealing ring | |
| CN209892749U (en) | Y-shaped sealing ring | |
| CN217233978U (en) | Novel piston structure used in cylinder | |
| CN208474238U (en) | A kind of hydraulic New Buffering ring | |
| CN215762125U (en) | Novel phenolic resin piston | |
| CN215805908U (en) | Piston cylinder sealing structure, brake cylinder and brake clamp unit | |
| CN216843058U (en) | Piston sealing structure for hydraulic cylinder | |
| CN211852343U (en) | Double-piston-rod guiding type lifting oil cylinder | |
| CN215762527U (en) | Static seal of high-low pressure resistant guide sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |