CN116085230A - Novel dynamic seal structure - Google Patents
Novel dynamic seal structure Download PDFInfo
- Publication number
- CN116085230A CN116085230A CN202310086225.2A CN202310086225A CN116085230A CN 116085230 A CN116085230 A CN 116085230A CN 202310086225 A CN202310086225 A CN 202310086225A CN 116085230 A CN116085230 A CN 116085230A
- Authority
- CN
- China
- Prior art keywords
- sealing
- elastic
- accommodating cavity
- piece
- novel dynamic
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Abstract
The application provides a novel dynamic seal structure, include: a fixing member having a receiving chamber; the moving piece is provided with a moving end; the moving end is positioned in the accommodating cavity and can reciprocate in the accommodating cavity; the sealing piece is connected with the moving end; the seal includes a seal portion; the sealing part is in sealing fit with the inner wall of the accommodating cavity; the elastic piece is arranged on one side, far away from the inner wall of the accommodating cavity, of the sealing part and is in a force accumulation state and used for providing an acting force pressed against the sealing part so that the sealing part is always tightly attached to the inner wall of the accommodating cavity. According to the novel dynamic sealing structure, the elastic piece in the force storage state is arranged, so that the outer side wall of the sealing part of the sealing piece is always tightly attached to the inner wall of the accommodating cavity, and the sealing performance is not reduced after long-term use; in addition, the arrangement of the elastic piece in the force storage state can also increase the sealing performance under the low-temperature working condition.
Description
Technical Field
The application relates to the technical field of mechanical sealing, in particular to a novel dynamic sealing structure.
Background
An air compressor is an apparatus for compressing a gas. There are many kinds of air compressors, and a piston compressor is a positive displacement compressor, in which a compression element is a piston, and air is compressed by driving the piston to reciprocate in a cylinder. The end of air compressor piston rod is equipped with seal structure for with the cylinder body inner wall is sealed, when using, air compressor's piston rod can be in the cylinder body internal reciprocating motion, in the motion process, seal structure can rub with the cylinder body inner wall, and long-term use can make seal structure wearing and tearing for produce the gap between its and the cylinder body inner wall, cause gaseous revealing easily, lead to sealing performance to descend. Therefore, the application provides a novel dynamic sealing structure.
Disclosure of Invention
The purpose of the application is to provide a novel dynamic seal structure aiming at the problems.
The application provides a novel dynamic seal structure, include:
a fixing member having a receiving chamber;
the moving piece is provided with a moving end; the moving end is positioned in the accommodating cavity and can reciprocate in the accommodating cavity;
the sealing piece is connected with the moving end; the seal includes a seal portion; the sealing part is in sealing fit with the inner wall of the accommodating cavity;
the elastic piece is arranged on one side, far away from the inner wall of the accommodating cavity, of the sealing part and is in a force accumulation state and used for providing an acting force pressed against the sealing part so that the sealing part is always tightly attached to the inner wall of the accommodating cavity.
According to the technical scheme provided by some embodiments of the present application, the mobile terminal is provided with a first supporting part; a first connecting part is arranged on one side of the first supporting part relatively far away from the moving end; the first connecting portion forms a boss structure with respect to the first supporting portion.
According to some embodiments of the present application, the sealing member includes a second connecting portion and a circle of sealing portions disposed at edges of the second connecting portion; the second connecting part is provided with a first through hole; the first through hole is sleeved on the first connecting part.
According to some embodiments of the present disclosure, the elastic member includes a third connecting portion and a ring of elastic portion disposed at an edge of the third connecting portion; a second through hole is formed in the third connecting part; the second through hole is sleeved on the first connecting part.
According to some embodiments of the present application, the elastic portion includes a plurality of elastic teeth that are equidistantly spaced apart.
According to the technical scheme provided by certain embodiments of the present application, the elastic piece further includes a plurality of fourth connecting portions, the number of which is consistent with that of the elastic teeth; the fourth connecting part is used for connecting the elastic teeth and the third connecting part; the two side edges of the fourth connecting part are respectively in a step structure; the bottom of the step structure is connected with the third connecting part.
According to the technical scheme provided by certain embodiments of the present application, a first angle is formed between the sealing part and the second connecting part; a second angle is formed between the elastic part and the third connecting part; the first angle is smaller than the second angle.
According to the technical scheme provided by some embodiments of the present application, a pressing groove is provided on a side of the first supporting portion away from the moving end; a pressing protrusion is arranged on one side, close to the first supporting part, of the second connecting part; the compaction protrusion is embedded in the compaction groove.
According to the technical scheme provided by certain embodiments of the present application, the novel dynamic sealing structure further comprises a pressing piece; the pressing piece is arranged on one side of the elastic piece, which is far away from the sealing piece; the pressing piece is provided with a third through hole; the third through hole is in interference fit with the first connecting portion.
Compared with the prior art, the beneficial effect of this application: according to the novel dynamic sealing structure, the elastic piece in the force storage state is arranged in the space formed by the sealing piece, and the elastic piece can enable the outer side wall of the sealing part of the sealing piece to be tightly attached to the inner wall of the accommodating cavity outwards, so that the sealing performance is greatly improved; after the sealing part is used for a certain time, the outer side wall of the sealing part is worn, so that gaps are easily formed between the sealing part and the inner wall of the fixing part, and the elastic part is gradually elastically deformed, so that the sealing part of the sealing part is outwards clung to the inner side wall of the accommodating cavity, and the sealing performance is ensured not to be reduced after long-term use; in addition, the elastic piece in the force storage state can overcome the shrinkage of the sealing piece in the diameter direction under the low-temperature working condition, so that the sealing performance under the low-temperature working condition is improved.
Drawings
Fig. 1 is a schematic structural diagram of a novel dynamic seal structure provided in an embodiment of the present application;
FIG. 2 is an exploded view of the novel dynamic seal structure provided in the embodiments of the present application;
FIG. 3 is a cross-sectional view of a novel dynamic seal structure provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a boss structure of the novel dynamic seal structure provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a sealing element of the novel dynamic sealing structure according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an elastic member of a novel dynamic seal structure according to an embodiment of the present application.
The text labels in the figures are expressed as:
1. a fixing member; 2. a moving member; 3. a seal; 301. a sealing part; 302. a second connecting portion; 303. a first through hole; 304. pressing the bulge; 4. an elastic member; 401. a third connecting portion; 402. an elastic part; 403. a second through hole; 404. a fourth connecting portion; 5. a boss structure; 501. a first support portion; 502. a first connection portion; 503. compressing the groove; 6. a pressing member; 601. and a third through hole.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present application, the following detailed description of the present application is provided by way of example and illustration only, and should not be construed to limit the scope of the present application in any way.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Referring to fig. 1 to 3, the present embodiment provides a novel dynamic sealing structure, which is applied to a piston air compressor and includes a fixed member 1, a moving member 2, a sealing member 3, an elastic member 4 and a compressing member 6.
The fixing member 1, i.e. the cylinder of the air compressor, is of hollow cylindrical structure, having a receiving chamber inside, only a part of which is shown in the figure.
The movable piece 2 is a piston rod of the air compressor, one end of the piston rod is connected with the driving mechanism, the other end of the piston rod extends into the cylinder body, one end extending into the cylinder body is a movable end of the piston rod, and the movable end is positioned in the accommodating cavity and can reciprocate in the accommodating cavity; the driving mechanism is a conventional mechanism in the prior art, and the driving mechanism is used for driving the piston rod to reciprocate, so that the specific structure of the driving mechanism is not repeated here.
Referring to fig. 4, the moving end is provided with a first supporting portion 501; a first connection portion 502 is disposed on a side of the first supporting portion 501 relatively far from the moving end; the first connection portion 502 forms a boss structure 5 with respect to the first support portion 501.
Specifically, the first supporting portion 501 has a disc structure, the diameter of which is larger than the diameter of the piston rod and slightly smaller than the diameter of the accommodating cavity of the fixing member 1, and a first connecting portion 502 is provided at one end of the first supporting portion 501 away from the piston rod; the first connecting portion 502 has a cylindrical structure with a smaller length, and the diameter of the first connecting portion 502 is smaller than the diameter of the first supporting portion 501; the first supporting portion 501 and the first connecting portion 502 together form a boss structure 5; the moving member 2, the first supporting portion 501 and the first connecting portion 502 are coaxially disposed and integrally formed.
With further reference to fig. 5, the sealing member 3 is connected to the movable end; the sealing element 3 comprises a second connecting part 302 and a circle of sealing part 301 arranged at the edge of the second connecting part 302; the sealing part 301 is in sealing fit with the inner wall of the accommodating cavity; the second connecting portion 302 is provided with a first through hole 303; the first through hole 303 is sleeved on the first connection portion 502.
Specifically, the sealing element 3 may be a leather cup, made of rubber material, and is an integrally formed piece, the sealing element 3 is in a bowl-shaped structure, the bowl bottom is close to the boss structure 5, and the bowl opening direction is the direction away from the boss structure 5; the second connecting portion 302 corresponds to a bowl bottom, a first through hole 303 is formed in the second connecting portion 302, the diameter of the first through hole 303 is slightly larger than that of the first connecting portion 502, and the sealing element 3 is sleeved on the first connecting portion 502 through the first through hole 303; the sealing part 301 is in arc transition connection with the second connecting part 302; the outer surface of the sealing part 301 is in sealing fit with the inner wall of the accommodating cavity.
With further reference to fig. 6, the elastic member 4 is disposed on a side of the sealing portion 301 away from the inner wall of the accommodating cavity, and is in a force accumulation state, for providing a force pressing against the sealing portion 301, i.e. for applying pressure to the sealing portion 301, so that the sealing portion 301 is always tightly adhered to the inner wall of the accommodating cavity.
Specifically, the elastic member 4 includes a third connecting portion 401 and a round of elastic portion 402 provided at an edge of the third connecting portion 401; the elastic piece 4 may be a spring piece, and may be made of phosphor bronze, tin bronze, 65Mn, 55Si2Mn, 302 or 316 brand flat steel strips, etc., which are integrally formed, the elastic piece 4 is located in a space formed by the sealing piece 3, and is also in a bowl-shaped structure, the bowl bottom is close to the second connecting portion 302 of the sealing piece 3, and the bowl opening direction is a direction away from the second connecting portion 302; a second through hole 403 is formed in the third connecting portion 401; the diameter of the second through hole 403 is slightly larger than that of the first connecting portion 502, and the elastic piece 4 is sleeved on the first connecting portion 502 through the second through hole 403; the elastic part 402 is in arc transition connection with the third connecting part 401; the outer surface of the elastic part 402 is closely adhered to the inner surface of the sealing part 301.
After the novel sealing structure is assembled, the elastic piece 4 is in a force storage state, namely an elastic deformation state, the outer surface of the elastic part 402 of the elastic piece 4 is tightly propped against the inner surface of the sealing part 301, and acting force is applied to the sealing part 301, so that the outer surface of the sealing part 301 is in sealing fit with the inner side wall of the accommodating cavity; in the use process, when the outer surface of the sealing part 301 is worn due to the repeated reciprocating motion of the moving part 2, and a gap is generated between the outer surface of the sealing part 301 and the inner surface of the fixed part 1, the elastic part 402 of the elastic part 4 gradually rebounds, i.e. gradually recovers deformation, and continuously applies a pressing force to the sealing part 301 from the inner surface of the sealing part 301, so that the sealing part 301 of the sealing part 3 is always tightly attached to the inner wall of the accommodating cavity, thereby avoiding leakage of gas and ensuring that the sealing performance is not reduced.
Further, the elastic portion 402 includes a plurality of elastic teeth that are equally spaced apart.
Specifically, in this embodiment, the elastic portion 402 includes 24 elastic teeth, where the 24 elastic teeth are uniformly distributed along the circumference at the edge of the third connecting portion 401, and a gap is left between two adjacent elastic teeth.
Further, in order to enhance the compression effect of the elastic portion 402 on the sealing portion 301, an elastic protrusion may be optionally provided on the outer sidewall of the elastic portion 402, so that a better compression effect may be obtained.
Further, the elastic member 4 further includes a number of fourth connecting portions 404 corresponding to the number of the elastic teeth; the fourth connecting portion 404 is used for connecting the elastic teeth and the third connecting portion 401; the two side edges of the fourth connecting portion 404 are respectively in a step structure; the bottom of the step structure is connected to the third connection portion 401.
Specifically, in the present embodiment, a total of 24 fourth connection portions 404 are included, and the 24 fourth connection portions 404 are in one-to-one correspondence with the 24 elastic teeth; the fourth connecting portion 404 has a convex structure, i.e., two side edges thereof are respectively in a step structure, the bottom of the convex structure is connected with the third connecting portion 401, and the top of the convex structure is connected with the elastic portion 402.
Further, a first angle is formed between the sealing portion 301 and the second connecting portion 302; a second angle is formed between the elastic part 402 and the third connecting part 401; the first angle is smaller than the second angle.
Specifically, the value range of the first angle is 99.5-100.5 degrees, the value range of the second angle is 102-103 degrees, in this embodiment, the value of the first angle is 100 degrees, and the value of the second angle is 102.5 degrees; by adopting the technical scheme, because the molding angle of the elastic piece 4 is larger than that of the sealing piece 3, the elastic piece 4 can enable the sealing portion 301 of the sealing piece 3 to be attached to the inner wall of the accommodating cavity where the sealing portion 301 is located outwards, and leakage of gas from a gap between the sealing portion 301 and the inner wall of the accommodating cavity in the working process is avoided, so that the sealing performance of the moving piece 2 in the moving process is improved.
Referring to fig. 4 and 5, a pressing groove 503 is formed on a side of the first supporting portion 501 away from the moving end; a pressing protrusion 304 is disposed on a side of the second connecting portion 302, which is close to the first supporting portion 501; the pressing projection 304 is embedded in the pressing groove 503.
Specifically, a ring-shaped pressing groove 503 is provided on the first supporting portion 501, and a ring-shaped pressing protrusion 304 is provided on the sealing member 3; the shape and size of the pressing groove 503 are matched with those of the pressing protrusion 304; by adopting the above technical scheme, the sealing element 3 and the boss structure 5 can be stably installed.
Further, the novel dynamic sealing structure further comprises a pressing piece 6; the pressing piece 6 is arranged on the side of the elastic piece 4 away from the sealing piece 3; the pressing piece 6 is provided with a third through hole 601; the third through hole 601 is in interference fit with the first connecting portion 502.
Specifically, the compressing element 6 is of a ring structure, the diameter of the third through hole 601 is slightly smaller than that of the first connecting portion 502, the compressing element 6 is in interference fit with the first connecting portion 502 through the third through hole 601, the compressing element 4 and the sealing element 3 are compressed, and the elastic element 4 and the sealing element 3 are compressed, so that the compressing element ensures that the elastic element 4 and the sealing element 3 are tightly attached to each other after being installed.
The novel dynamic seal structure that this embodiment provided has following advantage:
(1) By arranging the elastic piece 4 in the force accumulation state in the space formed by the sealing piece 3, the elastic piece 4 can enable the outer side wall of the sealing part 301 of the sealing piece 3 to be tightly adhered to the inner wall of the accommodating cavity, so that the sealing performance is greatly improved; after a certain period of use, the outer side wall of the sealing part 301 of the sealing element 3 is worn, so that the diameter is reduced, and the sealing performance is not reduced because the elastic element 4 enables the sealing part 301 of the sealing element 3 to be tightly adhered to the inner side wall of the accommodating cavity;
(2) The arrangement of the elastic member 4 in the force storage state also overcomes the shrinkage of the sealing member 3 in the diameter direction thereof under the low-temperature working condition, thereby increasing the sealing performance under the low-temperature working condition.
It should be noted that, in this embodiment, the novel dynamic sealing structure of the present invention is described in detail by taking an application scenario requiring air-tightness as an example, and in addition, the novel dynamic sealing structure of the present invention may also be applied to an application scenario requiring liquid-tightness.
Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, due to the limited nature of text, there is an objectively infinite number of specific structures, and that, to those skilled in the art, several improvements, modifications or changes can be made, and the above technical features can be combined in a suitable manner, without departing from the principles of the present invention; such modifications, variations and combinations, or the direct application of the concepts and aspects of the invention in other applications without modification, are intended to be within the scope of this application.
Claims (9)
1. Novel dynamic seal structure, characterized by includes:
a fixing element (1), wherein the fixing element (1) is provided with a containing cavity;
a moving member (2), the moving member (2) having a moving end; the moving end is positioned in the accommodating cavity and can reciprocate in the accommodating cavity;
a seal (3), the seal (3) being connected to the mobile end; the seal (3) comprises a sealing portion (301); the sealing part (301) is in sealing fit with the inner wall of the accommodating cavity;
and the elastic piece (4) is arranged on one side of the sealing part (301) away from the inner wall of the accommodating cavity, is in a force accumulation state and is used for providing an acting force pressed against the sealing part (301) so as to enable the sealing part (301) to be tightly attached to the inner wall of the accommodating cavity all the time.
2. The novel dynamic seal structure of claim 1, wherein the moving end is provided with a first supporting portion (501); a first connecting part (502) is arranged on one side of the first supporting part (501) relatively far away from the moving end; the first connection portion (502) forms a boss structure (5) with respect to the first support portion (501).
3. The novel dynamic seal structure of claim 2, wherein the seal (3) comprises a second connecting portion (302) and a ring of the seal portion (301) provided at an edge of the second connecting portion (302); the second connecting part (302) is provided with a first through hole (303); the first through hole (303) is sleeved on the first connecting part (502).
4. A novel dynamic seal structure according to claim 3, wherein the elastic member (4) comprises a third connecting portion (401) and a ring of elastic portions (402) provided at the edge of the third connecting portion (401); the third connecting part (401) is provided with a second through hole (403); the second through hole (403) is sleeved on the first connecting part (502).
5. The novel dynamic seal structure of claim 4, wherein said resilient portion (402) comprises a plurality of resilient teeth equally spaced apart.
6. The novel dynamic seal structure of claim 5, wherein said elastic member (4) further comprises a number of fourth connecting portions (404) corresponding to the number of said elastic teeth; the fourth connecting part (404) is used for connecting the elastic teeth and the third connecting part (401); the two side edges of the fourth connecting part (404) are respectively in a step structure; the bottom of the step structure is connected with the third connecting part (401).
7. The novel dynamic seal structure of claim 6, wherein a first angle is formed between the sealing portion (301) and the second connecting portion (302); -a second angle is formed between the elastic portion (402) and the third connecting portion (401); the first angle is smaller than the second angle.
8. The novel sealing structure according to claim 6, wherein a pressing groove (503) is provided on a side of the first supporting portion (501) away from the moving end; a pressing protrusion (304) is arranged on one side of the second connecting part (302) close to the first supporting part (501); the pressing protrusion (304) is embedded in the pressing groove (503).
9. The novel dynamic seal structure according to any one of claims 2 to 8, further comprising a pressing member (6); the pressing piece (6) is arranged on one side of the elastic piece (4) away from the sealing piece (3); the pressing piece (6) is provided with a third through hole (601); the third through hole (601) is in interference fit with the first connecting portion (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310086225.2A CN116085230A (en) | 2023-02-08 | 2023-02-08 | Novel dynamic seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310086225.2A CN116085230A (en) | 2023-02-08 | 2023-02-08 | Novel dynamic seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116085230A true CN116085230A (en) | 2023-05-09 |
Family
ID=86213793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310086225.2A Pending CN116085230A (en) | 2023-02-08 | 2023-02-08 | Novel dynamic seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116085230A (en) |
-
2023
- 2023-02-08 CN CN202310086225.2A patent/CN116085230A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6003848A (en) | Compact gas spring | |
| US9255477B2 (en) | Rocking piston type compressor | |
| US8474829B2 (en) | Sealing device | |
| KR100714577B1 (en) | Discharge valve assembly for linear compressor | |
| US10900568B2 (en) | Sealing structure | |
| KR890004880A (en) | Air spring with inner sealing band and its installation method | |
| CN103459172B (en) | For the piston of air bellow | |
| US20160153564A1 (en) | Hermetic seal device | |
| US5064359A (en) | Annular support for a seal for a tilt piston | |
| US7669516B2 (en) | Cylinder-piston arrangement | |
| CN215334122U (en) | Air spring | |
| CN116085230A (en) | Novel dynamic seal structure | |
| JP2003161272A (en) | Scroll type pump | |
| CN207514239U (en) | A kind of special-shaped seal ring | |
| US11193589B2 (en) | Sealing device | |
| CN219187357U (en) | Elastic part for daily chemical packaging container | |
| US3006536A (en) | Pistons or flap-valves for compressors and pumps | |
| CN212429600U (en) | Nitrogen spring structure | |
| CN208221028U (en) | The sealing device of air-compressor piston head | |
| WO2021010104A1 (en) | Sealing device | |
| JPH0615163Y2 (en) | Packing | |
| CN207921206U (en) | Nitrogen gas spring and spring assembly | |
| CN214171328U (en) | Lip sealing device | |
| CN108223341B (en) | Miniature liquid pump | |
| KR910000563B1 (en) | Device for forcing piston ring radially outwardly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |