CN108591477A - A kind of expandable seal circle - Google Patents
A kind of expandable seal circle Download PDFInfo
- Publication number
- CN108591477A CN108591477A CN201810403262.0A CN201810403262A CN108591477A CN 108591477 A CN108591477 A CN 108591477A CN 201810403262 A CN201810403262 A CN 201810403262A CN 108591477 A CN108591477 A CN 108591477A
- Authority
- CN
- China
- Prior art keywords
- filled cavity
- sealing ring
- sealing
- seal circle
- ring matrix
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of expandable seal circle,Including sealing ring matrix and the filled cavity being arranged in sealing ring matrix,Sealing ring matrix is structure as a whole,Sealing ring is in process of manufacture,Injection appropriate amount of material A in filled cavity,Materials A underfill filled cavity,Ensure that filled cavity has certain compressibility,When sealing element is installed,Since sealing element compressibility is big,It is easily installed,And it is clearance fit to install rear sealing lip with piston rod,Sealing lip is not interior during installation frayed,After sealing ring installs,Injection appropriate amount of material B in filled cavity,Material B reacts forming material C with materials A and is full of filled cavity 2,Material C is solid,Volume expansion is to full of filled cavity,And with certain elasticity and intensity,Sealing ring is set to expand,Volume increases,Sealing lip is formed with piston rod and is interference fitted,The service life of lift-off seal part of the present invention,Lower the harm generated to sealing lip in installation process.
Description
Technical field
The present invention relates to a kind of rubber-plastic sealing ring technical field, more particularly to a kind of expandable seal circle.
Background technology
The structure and performance of rubber-plastic sealing part are most important to the operating of mechanical equipment, performance and used life.Leakproofness
Poor can not only increase the friction, abrasion and power consumption of machine can also cause because letting out so as to shorten the working life of machine
It leaks and environmental pollution and equipment is caused to corrode.The failure of sealing element will have a direct impact on the efficiency of complete machine, and is associated with and causes potentially
Bigger economic loss, or even serious safety accident can be brought.
Rubber and plastic reciprocating dynamic seal is when mounted generally using interference fit, therefore there are certain contact pressures in area in sealing contact
Power.When installing sealing ring, since sealing ring volume is more than seal groove space, its inevitable sealing lip and piston rod when installation
Between friction and wear, cause the contact in area in sealing contact to reduce, to increase leakage rate, shorten sealing element use the longevity
Life.And existing sealing ring determines that the wear problem of its sealing lip when mounted is inevitable from structure.
Currently, being concentrated mainly on sealing leak amount and frictional force, Yi Jiyan for the research of reciprocation sealing performance both at home and abroad
Study carefully and how to reduce friction coefficient and improve the service life using new material to reduce abrasion, specializes in sealing lip and reduce when mounted
Or eliminate its abrasion patent of invention it is few.Therefore, there is an urgent need to design it is a kind of when mounted can avoid sealing lip abrasion it is close
Seal, and its sealing function can be played in normal conditions.
Invention content
It in order to overcome the above-mentioned deficiencies of the prior art, can the purpose of the present invention is to provide a kind of expandable seal circle
The reliability of sealing element is effectively improved, the service life of lift-off seal part lowers the harm generated to sealing lip in installation process.
To achieve the goals above, the technical solution adopted by the present invention is：
A kind of expandable seal circle, including sealing ring matrix 1 and the filled cavity 2 that is arranged in sealing ring matrix 1, it is described
Sealing ring matrix 1 is structure as a whole,
Filled cavity 2 also in a ring, with the 1 concyclic heart of sealing ring matrix.
2 inner wall of filled cavity is coated with layer of polyethylene plastic film.
The injection material A in process of manufacture of the filled cavity 2, materials A underfill filled cavity 2, the sealing ring
1 lower end of matrix is sealing lip, and sealing lip is clearance fit with piston rod 3, and the injection material B after installing is reacted with materials A
Forming material C is full of entire filled cavity 2.
The sealing ring matrix 1 is nitrile rubber.
The materials A is super absorbent resin (SAP), and material B is water (H2O), material C is solid.
The injection mode of the material B is injected for needle tubing.
Beneficial effects of the present invention：
When normal mounting, sealing ring is clearance fit with piston rod 3, and sealing lip does not occur abrasive contact with piston rod and asks
Topic；After installing, the injection material B in filled cavity 2 reacts forming material C with materials A, due to material C volume expansion, makes
It obtains sealing lip and forms interference fit with piston rod 3, ensure leakproofness when its work and reliability；Material is selected according to different operating modes
Expect A and material B, forms the material C of material requested performance, it is applied widely.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 a are that schematic diagram, Fig. 2 b are sealing ring filled cavity of the present invention before injection material B in sealing ring filled cavity of the present invention
Schematic diagram after interior injection material B.
Specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, including sealing ring matrix 1 and the filled cavity 2 being arranged in sealing ring matrix 1；The sealing cycle basis
Body 1 is structure as a whole.
The filled cavity 2 injects appropriate amount of material A in process of manufacture, keeps definite shape and pressure；Installation sealing
When circle, sealing lip is clearance fit with piston rod 3.
The filled cavity 2 injects appropriate amount of material B after sealing ring installs, and reacts to be formed with certain bullet with materials A
Property solid material C, material C is full of entire filled cavity and volume expansion, sealing lip and piston rod made to be interference fitted, and plays sealing
The sealing function of circle.
2 inner wall of the filled cavity is coated with layer of polyethylene plastic film 4.
The material of the sealing ring matrix 1 is nitrile rubber.
The material C is solid, be may expand, and has certain elasticity and intensity.
2 inner wall of the filled cavity is coated with layer of polyethylene plastic film 4.
The material of the sealing ring matrix 1 is nitrile rubber.
The materials A is super absorbent resin (SAP), and material B is water (H2O)。
The injection mode of the material B is injected for needle tubing.
Fig. 2 a show sealing ring and install unimplanted material B schematic diagrames, are marked with materials A in filled cavity 2 at this time, and fill out
It is clearance fit, gap size d1 with piston rod 3 to fill chamber to have compressibility, sealing lip.
Fig. 2 b show sealing ring and install schematic diagram after injection material B, and forming material C is full of in filled cavity 2 at this time
Filled cavity 2 makes sealing ring expansion, volume increase, and sealing lip is interference fit with piston rod 3, and sealed ring deformation amount is d2.
The operation principle of the present invention：
Sealing ring injects appropriate amount of material A in process of manufacture in filled cavity 2, materials A underfill filled cavity 2 ensures
Filled cavity 2 has certain compressibility.It when sealing element is installed, since sealing element compressibility is big, is easily installed, and after installing
Sealing lip is clearance fit with piston rod 3, and sealing lip is not interior during installation frayed.
After sealing ring installs, appropriate amount of material B is injected in filled cavity 2, material B reacts forming material C with materials A and is full of
Filled cavity 2.Material C is solid, and volume expansion is extremely full of filled cavity 2, and with certain elasticity and intensity, sealing ring is made to expand,
Volume increases, and sealing lip is formed with piston rod 3 and is interference fitted.According to the material property of material C, it is ensured that sealing element is in normal work
Reach normal sealing effect under condition.It is not frayed when being installed due to sealing lip, the reliability of sealing element can be effectively improved, is promoted
The service life of sealing element lowers the harm generated to sealing lip in installation process.
Claims (5)
1. a kind of expandable seal circle, which is characterized in that including sealing ring matrix (1) and setting in sealing ring matrix (1)
Filled cavity (2), the sealing ring matrix (1) is structure as a whole,
Filled cavity (2) also in a ring, with sealing ring matrix (1) the concyclic heart.
2. a kind of expandable seal circle according to claim 1, which is characterized in that described filled cavity (2) inner wall is coated with
Layer of polyethylene plastic film.
3. a kind of expandable seal circle according to claim 1, which is characterized in that the filled cavity (2) is producing and processing
Injection material A in the process, materials A underfill filled cavity (2), described sealing ring matrix (1) lower end be sealing lip, sealing lip with
Piston rod (3) be clearance fit, the injection material B after installing, material B reacted with materials A forming material C be full of entirely fill out
Chamber (2) is filled, the materials A is super absorbent resin, and material B is water, and material C is solid.
4. a kind of expandable seal circle according to claim 3, which is characterized in that the injection mode of the material B is needle
Pipe is injected.
5. a kind of expandable seal circle according to claim 1, which is characterized in that the sealing ring matrix (1) is fourth
Nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403262.0A CN108591477B (en) | 2018-04-28 | 2018-04-28 | Method for preventing seal lip from being worn during installation of seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403262.0A CN108591477B (en) | 2018-04-28 | 2018-04-28 | Method for preventing seal lip from being worn during installation of seal ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108591477A true CN108591477A (en) | 2018-09-28 |
| CN108591477B CN108591477B (en) | 2019-12-24 |
Family
ID=63619271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810403262.0A Expired - Fee Related CN108591477B (en) | 2018-04-28 | 2018-04-28 | Method for preventing seal lip from being worn during installation of seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591477B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696496A (en) * | 2020-12-14 | 2021-04-23 | 珠海格力电器股份有限公司 | Oil seal structure and motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3414180A1 (en) * | 1984-04-14 | 1985-10-24 | Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren | Sealing device for abutting components which are at least approximately pipe-shaped, in particular for concrete mouldings |
| CN86205465U (en) * | 1986-07-29 | 1987-08-26 | 宋玉泉 | Self-adjustable seal ring |
| US8292301B1 (en) * | 2011-07-18 | 2012-10-23 | Gilstad Dennis W | Multifunction ring |
| CN104265901A (en) * | 2014-08-18 | 2015-01-07 | 常熟市董浜镇徐市盛峰液压配件厂 | Closed sealing ring |
| CN102656394B (en) * | 2009-11-23 | 2015-11-25 | 罗伯特·博世有限公司 | Seal ring, especially for the seal ring of hydraulic piston pump |
-
2018
- 2018-04-28 CN CN201810403262.0A patent/CN108591477B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3414180A1 (en) * | 1984-04-14 | 1985-10-24 | Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren | Sealing device for abutting components which are at least approximately pipe-shaped, in particular for concrete mouldings |
| CN86205465U (en) * | 1986-07-29 | 1987-08-26 | 宋玉泉 | Self-adjustable seal ring |
| CN102656394B (en) * | 2009-11-23 | 2015-11-25 | 罗伯特·博世有限公司 | Seal ring, especially for the seal ring of hydraulic piston pump |
| US8292301B1 (en) * | 2011-07-18 | 2012-10-23 | Gilstad Dennis W | Multifunction ring |
| CN104265901A (en) * | 2014-08-18 | 2015-01-07 | 常熟市董浜镇徐市盛峰液压配件厂 | Closed sealing ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696496A (en) * | 2020-12-14 | 2021-04-23 | 珠海格力电器股份有限公司 | Oil seal structure and motor |
| CN112696496B (en) * | 2020-12-14 | 2022-06-17 | 珠海格力电器股份有限公司 | Oil seal structure and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108591477B (en) | 2019-12-24 |
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| 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20200428 |