CN102767624A - Combined sealing part and kinematical sealing structure - Google Patents
Combined sealing part and kinematical sealing structure Download PDFInfo
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- CN102767624A CN102767624A CN2012102539169A CN201210253916A CN102767624A CN 102767624 A CN102767624 A CN 102767624A CN 2012102539169 A CN2012102539169 A CN 2012102539169A CN 201210253916 A CN201210253916 A CN 201210253916A CN 102767624 A CN102767624 A CN 102767624A
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Abstract
The invention provides a combined sealing part, which comprises an elastic support part and an abrasion-proof sealing part matched with the elastic support part. The abrasion-proof sealing part contacts a part to be sealed. The elastic support part supports the abrasion-proof sealing part, so that the abrasion-proof sealing part tightly presses the part to be sealed. The abrasion-proof sealing part is made from a carbon fiber composite material. The abrasion-proof sealing part made from the carbon fiber composite material has the high performance of strong strength, high abrasion resistance, high self lubrication performance, low friction coefficient, small thermal deformation and the like, and is matched with the elastic support part of a certain specification, the combined sealing part can generate pressing force on the abrasion-proof sealing part by using the deformation of the compressed elastic support part, and along with the uniform abrasion of a sealing end face, elastic energy stored by the elastic support part is gradually released, so that uniaxial or radial compensation is realized to realize a kinematical sealing function. The invention also provides a kinematical sealing structure, which has the same advantages.
Description
Technical field
The present invention relates to technical field of sealing technology, in particular to a kind of combination seal and with the movable sealing structure of this kind combination seal.
Background technique
For motive sealing, float grease seal and rotating shaft lip-shaped sealing etc. is two kinds of seal form wherein.
Float grease seal is a kind of mechanical seal of custom design, is for adapting to the mechanical seal mode of a kind of compact type that bad working environment grows up, and it is strong, wear-resisting, shock-resistant that it has a contamination resistance; Reliable operation, end wear compensates automatically, advantages of simple structure and simple.Generally form by the floating ring of ferroalloy materials and supporting O shape circle.Floating ring uses in pairs: one is rotated with rotary component, and one static relatively.The sealing principle of float grease seal is: two floating rings lean on the distortion after O shape circle receives axial compression; Generation is to the impacting force of floating-ring seal end face; Along with the uniform wear of seal face, this elastic energy that is stored by O shape circle progressively discharges, thereby plays the nose balance effect;
Rotating shaft lip-shaped sealing is to lean on the interference fit between a flexible seal and the running shaft to form.Its sealing mechanism is: the contact surface while between oil sealing lip and the axle is also deposited dry friction, boundary lubrication and three kinds of situation of fluid lubrication, does not break off a friendship for producing.Dry friction produces wearing and tearing, and fluid lubrication produces and leaks, and under boundary lubrication, forms the stable hydrodynamic oil film of one deck between the interface of oil sealing lip and axle, and oil slick thickness is about 0.0025mm; This layer oil film also seals except that as lubricated.Oil film is too thick, and fluid will leak; Oil film is too thin, just can not form the fluid lubrication film, and lip will wear and tear.Therefore, in order to obtain excellent sealing performance and long operating life, will ask for help on structural design, rubber compounding design and installation are used, all to condition be provided for forming the stable borderline oil film of film.Wherein in structural design, install and use aspect, the condition of defined is very harsh.
The technical problem that above-mentioned two kinds of motive sealing forms exist is:
For float grease seal, the floating ring processing request is high, must use in pairs, and complex structure, it is big to take up room, and needs special sealing system, and has more internal leakage.
For rotary shaft lip seal; Required sternly aspect on structural design, aspect installing and using, require too much, and oil sealing was responsive to the damage on axle surface; Very slight damage all possibly produce greatly influence to its sealing effect and operating life, even directly brings leakage.
Therefore, seek a kind of Sealing and a kind of motive sealing form, simple in structure to satisfy, easy for installation, sealing effectively, long service life, no internal leakage, be the technical problem that those skilled in the art need solution badly.
Summary of the invention
In order to solve the problems of the technologies described above; The invention provides a kind of combination seal, the characteristic that intensity is high, wear resistance is good, self lubricity is good, friction factor is little, thermal distortion is little that can rely on graphite fiber itself to have cooperates elastic supporting member for supporting optical member to use; Be applicable to the high speed motive sealing; Reduced component under the activity operating mode to the damage of combination seal, prolonged working life, improved sealing reliability.
In view of this, the invention provides a kind of combination seal, comprise elastic supporting member for supporting optical member and cooperate the abrasive resistance sealing parts of installing with said elastic supporting member for supporting optical member; Said abrasive resistance sealing parts contacts with parts to be sealed, and said elastic supporting member for supporting optical member supports said abrasive resistance sealing parts makes said abrasive resistance sealing parts compress said parts to be sealed; Wherein, said abrasive resistance sealing parts is that carbon fiber composite is processed.
Abrasive resistance sealing parts with the carbon fiber composite manufacturing has excellent properties such as intensity height, wear resistance is good, self lubricity is good, friction factor is little, thermal distortion is little; The elastic supporting member for supporting optical member that cooperates certain specification, combination seal receives the distortion after the axial compression with elastic supporting member for supporting optical member, produces the impacting force to abrasive resistance sealing parts.Along with the uniform wear of sealing surface, this elastic energy that is stored by elastic supporting member for supporting optical member progressively discharges, thus play single shaft to or radial compensation, reach dynamic sealing action with this.
In technique scheme, preferably, the surface of contact of said abrasive resistance sealing parts and parts to be sealed is a smooth surface.
The surface of contact of abrasive resistance sealing parts and parts to be sealed is a smooth surface, and it is fully contacted with parts to be sealed, guarantees the sealing effect that reaches good.
In technique scheme, preferably, said abrasive resistance sealing parts has elasticity.
Abrasive resistance sealing parts carries out the wear compensation except that supported by elastic supporting member for supporting optical member, and itself also can make and himself also have certain elasticity through adding certain component, can compensate wearing and tearing better like this; Simultaneously, because of abrasive resistance sealing parts itself has elasticity, thereby back surface elasticity distortion by compression can guarantee that wear ring more fully contacts with parts surface to be sealed, reaches better sealing effect.
In technique scheme, preferably, said elastic supporting member for supporting optical member is an O type circle, and said combination seal is a wear ring.
Abrasive resistance sealing parts is done and is circularized, and is convenient to install, and is convenient to be used with O type circle; And O type circle is Sealing commonly used, and elastic supporting member for supporting optical member adopts O type circle then can use existing Sealing, saves cost.
In technique scheme, preferably, the axial cross section of said abrasive resistance sealing parts is a rectangle, and perhaps, the axial cross section of said abrasive resistance sealing parts is circular.
The abrasive resistance sealing parts of rectangular cross-section and parts surface surface of contact to be sealed are big, good sealing effect, and circular cross-section is processed easily.
In technique scheme, preferably, said O type circle axially is installed in a side of said abrasive resistance sealing parts, and perhaps, said O type circle radially is enclosed within on the outer circumferential face of said abrasive resistance sealing parts.
O type circle is installed on the side or outer circumferential face of abrasive resistance sealing parts, and the mounting type under the two states is provided, applicable to end face motive sealing and two kinds of operating modes of dynamic radial seal.
In technique scheme, preferably, said O type circle adopts nitrile rubber to process.
The O type circle that adopts nitrile rubber to process, good springiness and cost are lower, and buying obtains easily easily.
The present invention also provides a kind of movable sealing structure; Comprise fixed block, movement parts and Sealing; The end face of said movement parts contacts with said fixed block end face rotationally; The end face of said fixed block is provided with the Sealing mounting groove, and said Sealing is installed in the said Sealing mounting groove, and said Sealing is each described combination seal in the technique scheme.
Perhaps; Movable sealing structure provided by the invention; Comprise fixed block, movement parts and Sealing, the outer wall of said movement parts contacts with the internal face of said fixed block rotationally, and the internal face of said fixed block is provided with the Sealing mounting groove; Said Sealing is installed in the said Sealing mounting groove, and said Sealing is each described combination seal in the technique scheme.
Abrasive resistance sealing parts with the carbon fiber composite manufacturing has excellent properties such as intensity height, wear resistance is good, self lubricity is good, friction factor is little, thermal distortion is little; The elastic supporting member for supporting optical member that cooperates certain specification, combination seal produces the impacting force to abrasive resistance sealing parts with the distortion of elastic supporting member for supporting optical member after by compression.Along with the uniform wear of sealing surface, this elastic energy that is stored by elastic supporting member for supporting optical member progressively discharges, thus play single shaft to or radially compensation, reach dynamic sealing action with this.
In sum, the invention provides a kind of combination seal and a kind of movable sealing structure, graphite fiber itself has selflubricating and wear resistance in the carbon fiber composite capable of using, guarantees the sealing effect that the rotation combination Sealing plays under the high speed rotating situation; And can change the sectional shape of abrasive resistance sealing parts according to design requirement, to satisfy the use of different occasions; Through with the combination of elastic supporting member for supporting optical member, reduced component under the motion operating mode to the damage of combination seal, prolonged working life, improved the reliability of motive sealing.
Description of drawings
Fig. 1 is that the master according to the one embodiment of the invention combination seal looks schematic representation;
Fig. 2 is that schematic representation is looked on the left side of combination seal shown in Figure 1;
Fig. 3 is the cross-sectional schematic of combination seal shown in Figure 1;
Fig. 4 is the cross-sectional schematic of movable sealing structure according to an embodiment of the invention;
Fig. 5 is the cross-sectional schematic of movable sealing structure in accordance with another embodiment of the present invention.
Wherein, the corresponding relation between reference character and the component names is among Fig. 1 to Fig. 5:
1 elastic supporting member for supporting optical member, 2 abrasive resistance sealing partses, 21 end faces, 22 outer circumferential faces, 3 fixed blocks, 4 movement parts
Embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with accompanying drawing and embodiment.
A lot of details have been set forth in the following description so that make much of the present invention; But; The present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention does not receive the restriction of following disclosed specific embodiment.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
Fig. 1 is to shown in Figure 3: the invention provides a kind of combination seal, comprise elastic supporting member for supporting optical member 1 and cooperates the abrasive resistance sealing parts 2 of installation with elastic supporting member for supporting optical member 1; Wearing piece 2 contacts with parts to be sealed, and elastic supporting member for supporting optical member 1 supports abrasive resistance sealing parts 2 makes abrasive resistance sealing parts 2 compress parts to be sealed; Wherein, abrasive resistance sealing parts 2 is processed for carbon fiber composite.In the present embodiment, elastic supporting member for supporting optical member 1 is that O type circle, abrasive resistance sealing parts 2 are wear ring.
The abrasive resistance sealing parts that this embodiment makes with carbon fiber composite has excellent properties such as intensity height, wear resistance is good, self lubricity is good, friction factor is little, thermal distortion is little; The elastic supporting member for supporting optical member that cooperates certain specification, combination seal produces the impacting force to abrasive resistance sealing parts with the distortion of elastic supporting member for supporting optical member after by compression.Along with the uniform wear of sealing surface, this elastic energy that is stored by elastic supporting member for supporting optical member progressively discharges, thus play single shaft to or radial compensation, reach dynamic sealing action with this.
Preferably, abrasive resistance sealing parts 2 is a smooth surface with the surface of contact of parts to be sealed.This can guarantee the sealing effect that reaches good so that abrasive resistance sealing parts fully contacts with parts to be sealed.
Preferably, said abrasive resistance sealing parts 2 has elasticity.Abrasive resistance sealing parts carries out the wear compensation except that supported by elastic supporting member for supporting optical member, and itself also can make and himself also have certain elasticity through adding certain component, can compensate wearing and tearing better like this; Simultaneously, because of abrasive resistance sealing parts itself has elasticity, thereby back surface elasticity distortion by compression can guarantee that wear ring more fully contacts with parts surface to be sealed, reaches better sealing effect.
Preferably, as shown in Figures 2 and 3, be rectangle as the wear ring axial cross section of abrasive resistance sealing parts 2.The axial cross section of wear ring is designed to rectangular configuration; The working surface area of contact is big, the seal action that can play, simultaneously; Big with O type circle area of contact; Thereby easy for installation, reliable with O type circle, guarantee that O type circle elastic energy by compression discharges fully, support wear ring and carry out wear compensation, improve sealing effect.
Certainly, the axial cross section of wear ring also can be arranged to other shapes, for example makes the circular cross-section of easy processing, also can realize the object of the invention.
Preferably, to shown in Figure 3, O type circle axially is installed on the end face 21 of wear ring one side like Fig. 1.The combination seal of this form goes for the end face motive sealing, i.e. said axial motive sealing usually.
Certainly, O type circle also radially is enclosed within on the outer circumferential face 22 of wear ring.Like this, applicable to dynamic radial seal.
Preferably, O type circle adopts nitrile rubber to process.The O type circle that adopts nitrile rubber to process, good springiness and cost are lower, and buying obtains easily easily.
The embodiment of combinations thereof Sealing is applied to axial motive sealing, promptly obtains the embodiment of a kind of movable sealing structure provided by the invention, as shown in Figure 4; Comprise fixed block 3, movement parts 4 and Sealing; The end face of movement parts 4 contacts with fixed block 3 end faces rotationally, and the end face of fixed block 3 is provided with the Sealing mounting groove, and said Sealing is installed in the said Sealing mounting groove; Wherein, said Sealing is the described combination seal of above-mentioned arbitrary embodiment.
The embodiment of combinations thereof Sealing is applied to dynamic radial seal, promptly obtains another embodiment of a kind of movable sealing structure provided by the invention, as shown in Figure 5; Comprise fixed block 3, movement parts 4 and Sealing; The outer wall of movement parts 4 contacts with the internal face of fixed block 3 rotationally, and the internal face of fixed block 3 is provided with the Sealing mounting groove, and said Sealing is installed in the said Sealing mounting groove; Wherein, said Sealing is the described combination seal of above-mentioned arbitrary embodiment.
Abrasive resistance sealing parts with the carbon fiber composite manufacturing has excellent properties such as intensity height, wear resistance is good, self lubricity is good, friction factor is little, thermal distortion is little; Distortion after the elastic supporting member for supporting optical member that cooperates certain specification, combination seal lean on elastic supporting member for supporting optical member by compression produces the impacting force to abrasive resistance sealing parts.Along with the uniform wear of sealing surface, this elastic energy that is stored by elastic supporting member for supporting optical member progressively discharges, thus play single shaft to or radial compensation, reach dynamic sealing action with this.
To sum up, the combination seal that the embodiment of the invention provides utilizes that graphite fiber itself has selflubricating and wear resistance in the carbon fiber composite, guarantees the sealing effect that the rotation combination Sealing plays under the high speed rotating situation; And can change the sectional shape of abrasive resistance sealing parts according to demand, to satisfy the use of different occasions; Through with the combination of flexible supporting frames, reduced component under the motion operating mode to the damage of combination seal, prolonged working life, improved the reliability of motive sealing.
In the present invention, only if clear and definite regulation and qualification are arranged in addition, broad understanding all should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be to be fixedly connected, and also can be to removably connect, or connect integratedly; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be linking to each other of two element internals.For those of ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a combination seal is characterized in that,
Comprise elastic supporting member for supporting optical member (1) and cooperate the abrasive resistance sealing parts of installing (2) with said elastic supporting member for supporting optical member (1);
Said abrasive resistance sealing parts (2) contacts with parts to be sealed, and said elastic supporting member for supporting optical member (1) supports said abrasive resistance sealing parts (2) makes said abrasive resistance sealing parts (2) compress said parts to be sealed;
Wherein, said abrasive resistance sealing parts (2) is processed for carbon fiber composite.
2. combination seal according to claim 1 is characterized in that,
Said abrasive resistance sealing parts (2) is a smooth surface with the surface of contact of parts to be sealed.
3. combination seal according to claim 2 is characterized in that,
Said abrasive resistance sealing parts (2) also has elasticity.
4. according to each described combination seal in the claim 1 to 3, it is characterized in that,
Said elastic supporting member for supporting optical member (1) is an O type circle, and said abrasive resistance sealing parts (2) is a wear ring.
5. combination seal according to claim 4 is characterized in that,
The axial cross section of said wear ring is a rectangle or circular.
6. combination seal according to claim 4 is characterized in that,
Said O type circle axially is installed in a side of said abrasive resistance sealing parts (2), and perhaps, said O type circle radially is enclosed within on the outer circumferential face of said abrasive resistance sealing parts (2).
7. combination seal according to claim 4 is characterized in that.
Said O type circle adopts nitrile rubber to process.
8. movable sealing structure; Comprise fixed block (3), movement parts (4) and Sealing; The end face of said movement parts (4) contacts with said fixed block (3) end face rotationally, and the end face of said fixed block (3) is provided with the Sealing mounting groove, and said Sealing is installed in the said Sealing mounting groove; It is characterized in that said Sealing is like each described combination seal in the claim 1 to 7.
9. movable sealing structure; Comprise fixed block (3), movement parts (4) and Sealing; The outer wall of said movement parts (4) contacts with the internal face of said fixed block (3) rotationally, and the internal face of said fixed block (3) is provided with the Sealing mounting groove, and said Sealing is installed in the said Sealing mounting groove; It is characterized in that said Sealing is like each described combination seal in the claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102539169A CN102767624A (en) | 2012-07-20 | 2012-07-20 | Combined sealing part and kinematical sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102539169A CN102767624A (en) | 2012-07-20 | 2012-07-20 | Combined sealing part and kinematical sealing structure |
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| CN102767624A true CN102767624A (en) | 2012-11-07 |
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| CN2012102539169A Pending CN102767624A (en) | 2012-07-20 | 2012-07-20 | Combined sealing part and kinematical sealing structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889516A (en) * | 2015-01-22 | 2016-08-24 | 贵州航空发动机研究所 | Sealing device of hydraulic actuator cylinder |
| CN106678468A (en) * | 2017-02-06 | 2017-05-17 | 江阴市长龄机械制造有限公司 | Sealing structure of large operation machinery rotation joint |
| CN107725780A (en) * | 2017-11-09 | 2018-02-23 | 昆明纳太科技有限公司 | Pressure difference sealing structure and pressure difference encapsulating method |
| CN111946918A (en) * | 2020-08-05 | 2020-11-17 | 连云港苏港石化设备有限公司 | Low-temperature main sealing structure |
| CN113550755A (en) * | 2021-07-14 | 2021-10-26 | 中铁工程装备集团有限公司 | Wear-resisting area and shield constructs owner and drive sealed runway |
| CN114962645A (en) * | 2022-06-02 | 2022-08-30 | 北京星际荣耀科技有限责任公司 | Dynamic sealing structure |
| CN114953443A (en) * | 2013-12-02 | 2022-08-30 | 沃克斯艾捷特股份有限公司 | Work box with movable side walls |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114953443A (en) * | 2013-12-02 | 2022-08-30 | 沃克斯艾捷特股份有限公司 | Work box with movable side walls |
| CN105889516A (en) * | 2015-01-22 | 2016-08-24 | 贵州航空发动机研究所 | Sealing device of hydraulic actuator cylinder |
| CN106678468A (en) * | 2017-02-06 | 2017-05-17 | 江阴市长龄机械制造有限公司 | Sealing structure of large operation machinery rotation joint |
| CN107725780A (en) * | 2017-11-09 | 2018-02-23 | 昆明纳太科技有限公司 | Pressure difference sealing structure and pressure difference encapsulating method |
| CN107725780B (en) * | 2017-11-09 | 2024-04-16 | 昆明纳太科技有限公司 | Differential pressure sealing structure and differential pressure sealing method |
| CN111946918A (en) * | 2020-08-05 | 2020-11-17 | 连云港苏港石化设备有限公司 | Low-temperature main sealing structure |
| CN113550755A (en) * | 2021-07-14 | 2021-10-26 | 中铁工程装备集团有限公司 | Wear-resisting area and shield constructs owner and drive sealed runway |
| CN114962645A (en) * | 2022-06-02 | 2022-08-30 | 北京星际荣耀科技有限责任公司 | Dynamic sealing structure |
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Application publication date: 20121107 |