CN2908928Y - Lip sealing ring and lip sealing device - Google Patents
Lip sealing ring and lip sealing device Download PDFInfo
- Publication number
- CN2908928Y CN2908928Y CNU2006200343708U CN200620034370U CN2908928Y CN 2908928 Y CN2908928 Y CN 2908928Y CN U2006200343708 U CNU2006200343708 U CN U2006200343708U CN 200620034370 U CN200620034370 U CN 200620034370U CN 2908928 Y CN2908928 Y CN 2908928Y
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- ring
- lip seal
- lip
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Abstract
A lip seal ring and a lip seal device are disclosed by the utility model, which is designed to provide a lip seal ring with excellent earthquake-resistant behavior and sealability and a lip seal device that can assemble and remove, and replace the lip seal ring conveniently. The lip seal ring comprises an annular straight segment, an annular lip-shaped segment and an annular compensation segment between annular straight segment and the annular lip-shaped segment. The annular compensation segment inclines relative to axial line of the ring from inner end of the annular straight segment, and extends to rear end of the annular lip-shaped segment and connected with the annular lip-shaped segment. The lip seal device comprises at least two lip seal lips and a sleeve and each lip seal lip is fixed to the sleeve separately in axial direction. The sleeve is formed with at least three annular segments that are joined in axial direction. Screw rods that are uniformly distributed in radial direction of each annular segment connect the annular segments into one piece and the lip seal rings are pre-compacted.
Description
Technical field
The utility model relates to seal ring and seal arrangement, particularly a kind of lip seal ring and lip seal device that is used to seal running shaft.
Background technique
The lip seal device is to block can be used for back and forth or the contact-type motive sealing that rotatablely moves of leakage-gap with the annular seal body.The annular seal body is a seal ring, has certain flexible material with rubber or plastics etc. and makes, and because of its longitudinal section such as lip shape, therefore is called as the lip seal ring.The lip seal ring is subjected to precompression in groove is installed, be subjected to during work to produce the self-tightening effect after the working medium pressure effect.
For running shaft being formed effective sealing, the a plurality of lip seal rings that are provided with at interval that adopt constitute the sealing of tandem formula more in the lip seal device, because the lip seal ring keeps elasticity thread to contact with running shaft, so good sealing effect, if it is lubricated to be aided with lubricant oil (fat) again, can further reduce surface friction drag, prolong the working life of lip seal ring.
The ring body of lip seal ring can be divided into ring-type lip section, ring-type straight section two-part according to its role.On existing general lip seal ring, this parallels ring-type lip segment base with sleeve axis, and its front port radially inwardly shrinks and forms the lip that contacts with running shaft circumferential exterior surface line.The ring-type straight section is vertical with sleeve axis, and pressure ring acts on the ring-type straight section position, and each lip seal ring is compressed.Because the ring-type straight section directly links to each other with the rear port of ring-type lip section, the anti-seismic performance of lip seal ring is relatively poor, running shaft frequently shakes the sealing effect that can reduce the lip seal ring, the generation working medium leaks, operation also tends to after a period of time to cause the lip seal ring to crack even rupture in the intersection of ring-type lip section, ring-type straight section, so the working life of this lip seal ring is shorter, needs often to change, and the seal arrangement maintenance is also bigger.
Existing rotating shaft lip-shaped sealing device structurally mainly includes sleeve and a plurality of lip seal ring, sleeve is an integrated type, each lip seal ring is provided with in sleeve at interval, be provided with pressure ring between the two adjacent lip seal rings, by the locking nut that is installed on the socket port each lip seal ring, pressure ring are compressed vertically, because each lip seal ring is installed in the sleeve, therefore it can be referred to as " built-in type lip seal device ".This built-in type lip seal device can be directly installed in the filler culvert, have characteristics easy to use, but there is following deficiency: assembling, dismounting inconvenience, particularly when the lip seal ring that change to damage, take out in the sleeve lip seal ring, pressure ring very difficult; Its sleeve outer wall and filler are contained between the hole wall and are needed to be provided with other seal arrangement, and the integral sealing structure is comparatively numerous and diverse, are unfavorable for reducing producing and maintenance cost.
The model utility content
One of technical problem to be solved in the utility model provides a kind of lip seal ring with good resistance shock stability and sealability.
The technological scheme that the above technical problem that solves the utility model adopts is: lip seal ring of the present utility model, comprise ring-type straight section, ring-type lip section on its ring body, it is characterized in that: described ring body has the ring-type compensator section between ring-type straight section and ring-type lip section, this ring-type compensator section by the inner of ring-type straight section beginning with respect to the ring body axis tilt, and the rear portion that extends to ring-type lip section crosses with it.
After taking abovementioned technology, described ring-type lip section forms a V-shaped groove along the axis extension between ring-type lip section and ring-type straight section, because the whole ring body employing of lip seal ring has certain flexible material and makes, therefore this ring-type compensator section rear portion of can be ring-type lip section provides active force radially, thereby can improve the anti-seismic performance of lip seal ring, and improve sealability.
As improvement of the technical scheme, for simplifying the unitary construction of rotation axis seal system, described ring body has circumferential bulge loop, and this circumferential bulge loop was extended radially outwardly by the ring-type straight section outer end beginning, filler is contained hole wall form sealing.
Another technical problem to be solved in the utility model provides a kind of lip seal device, and it can assemble and disassembling, assembling and replacing lip seal ring easily.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: lip seal device of the present utility model, include at least two lip seal rings and sleeve, each lip seal ring vertically fixed interval on sleeve, it is characterized in that: described sleeve is assembled vertically by at least three sections rings, screw rod along sections ring radial equipartition is connected to form one each sections ring, and each lip seal ring is carried out precompression.
After taking abovementioned technology, because each sections ring is connected by many screw rods, be that each sections ring, lip seal ring adopt the mode of suit to form seal arrangement, initial assembling or disassembling, assembling and replacing lip seal ring are all very convenient, and assembly precision is easy to be guaranteed, and helps reducing the maintenance workload of seal arrangement.
The beneficial effects of the utility model are, the lip seal ring has good seismic resistance and sealability, and long service life can be contained hole wall to filler simultaneously and form sealing, and the unitary construction of rotation axis seal system is simplified; The lip seal device adopts the set type structure, and initially assembling or disassembling, assembling and replacing lip seal ring are all very convenient, and assembly precision is easy to be guaranteed, and helps reducing the maintenance workload of seal arrangement;
Description of drawings
This specification comprises following four width of cloth accompanying drawings:
Fig. 1 is the structural representation of the utility model lip seal device;
Fig. 2 is the rear view of the utility model lip seal ring;
Fig. 3 is the longitudinal sectional view of the utility model lip seal ring;
Fig. 4 is the local amplification view of the utility model lip lip seal ring.
Component, position and numbering among the figure: running shaft 10, pressing plate 11, screw rod 20, sections ring 21, sections ring 22, sections ring 23, sections ring 24, sections ring 25, passage 26, oil chew 27, ring body 30, ring-type lip section 31, lip 31a, rear port 31b, ring-type compensator section 32, ring-type straight section 33, inner 33a, outer end 33b, circumferentially bulge loop 34, through hole 35, through hole 36.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 3 and Fig. 4, lip seal ring of the present utility model comprises ring-type straight section 33, ring-type lip section 31 on its ring body 30.Described ring body 30 has ring-type compensator section 32 between ring-type straight section 33 and ring-type lip section 31, this ring-type compensator section 32 by inner 33a beginning of ring-type straight section 33 with respect to ring body 30 axis tilts, and the rear portion that extends to ring-type lip section 31 crosses with it.After taking these technical measures, described ring-type lip section 32 forms a V-shaped groove along the axis extension between ring-type lip section 31 and ring-type straight section 33, because ring body 30 employings of lip seal ring have certain flexible material and make, therefore this ring-type compensator section 32 rear portion of can be ring-type lip section 31 provides active force radially, thereby can improve the anti-seismic performance of lip seal ring, and improve sealability.
With reference to Fig. 4, can farthest bring into play its cushioning effect for making ring-type straight section 33, as preferred embodiment a kind of, the lip 31a of described ring-type lip section 31, rear port 31b lay respectively at ring-type straight section 33 both sides, and described ring-type compensator section 32 crosses with the rear port 31b of ring-type lip section 31.With reference to Fig. 1 and Fig. 3, for simplifying the unitary construction of rotation axis seal system, described ring body 30 has circumferential bulge loop 34, and this circumferential bulge loop 34 was extended radially outwardly by the ring-type straight section 33 outer end 33b beginning, filler is contained hole wall form sealing.A kind of preferred structure of circumferential bulge loop 34 has been shown among Fig. 4, and the longitudinal section of promptly described circumferential bulge loop 34 is the triangle that cuts point, is begun to end to the outer peripheral surface of lip seal ring 30 by ring-type straight section 33 outer end 33b, and circumferentially the axial thickness of bulge loop 34 increases progressively.With reference to Fig. 2 and Fig. 1, the circumferentially uniform through hole 35 that passes for screw rod 20 that offers in described ring-type straight section 33 upper edges.
With reference to Fig. 1, lip seal device of the present utility model includes at least two lip seal rings and sleeve, each lip seal ring vertically fixed interval on sleeve.Described sleeve is assembled vertically by at least three sections rings, along the screw rod 20 of sections ring radial equipartition each sections ring is connected to form one, and each lip seal ring is carried out precompression.With reference to Fig. 1, the axial end of described sections ring acts on the end face of ring-type straight section 33 of lip seal ring.After taking abovementioned technology, because each sections ring is connected by many screw rods 20, be that each sections ring, lip seal ring adopt the mode of suit to form seal arrangement, initial assembling or disassembling, assembling and replacing lip seal ring are all very convenient, and assembly precision is easy to be guaranteed, and helps reducing the maintenance workload of seal arrangement.
For improving sealability, with reference to Fig. 1, described each lip seal ring should be divided into two groups by quantity and be provided with back-to-back, and promptly the rear port 31b of the ring-type lip section 31 of these two groups of lip seal rings is relative vertically.In addition, described sleeve can have lubricant grease is imported two groups of passages 26 between the lip seal ring.See figures.1.and.2, described passage 26 is formed by 36 butt joints of the through hole on the ring-type straight section 33 that is opened in sections ring, lip seal ring.
Embodiment:
Shown in Fig. 1 is a kind of exemplary embodiment of the utility model lip seal ring and lip seal device.With reference to Fig. 1, in the present embodiment, sleeve is assembled vertically by 5 sections rings 21,22,23,24,25, respectively is provided with 1 lip seal ring between each adjacent segment ring, and promptly the quantity of lip seal ring is 4.With reference to Fig. 2, offer 6 through holes 35 that pass for screw rod 20 on the ring-type straight section 33 of each lip seal ring.With reference to Fig. 1, six screw rods 20 along sections ring radial equipartition that pass sections ring 21,22,23,24 and each lip seal ring are connected to form one each sections ring, and each lip seal ring is carried out precompression.With reference to Fig. 1,4 lip seal rings are that a component becomes two groups to be provided with back-to-back with 2.With reference to Fig. 1, in sleeve, be provided with lubricant grease is imported two groups of passages 26 between the lip seal ring, passage 26 is formed by 36 butt joints of the through hole on the ring-type straight section 33 that is opened in sections ring, lip seal ring, the outlet of passage 26 is opened on the sections ring 23, inlet is arranged on the sections ring 21, and inlet is provided with oil and chews 27.With reference to Fig. 1 and Fig. 4, the lip 31a of described ring-type lip section 31, rear port 31b lay respectively at ring-type straight section 33 both sides, and described ring-type compensator section 32 crosses with the rear port 31b of ring-type lip section 31.With reference to Fig. 1 and Fig. 4, described ring body 30 has circumferential bulge loop 34, and this circumferential bulge loop 34 was extended radially outwardly by the ring-type straight section 33 outer end 33b beginning, filler is contained hole wall form sealing.A kind of preferred structure of circumferential bulge loop 34 has been shown among Fig. 4, and the longitudinal section of promptly described circumferential bulge loop 34 is the triangle that cuts point, is begun to end to the outer peripheral surface of lip seal ring by ring-type straight section 33 outer end 33b, and circumferentially the axial thickness of bulge loop 34 increases progressively.
It is pointed out that top described principles more of the present utility model that just explain through diagrams.Because the those of ordinary skill to constructed field is easy to carry out on this basis some modifications and change, therefore this specification be not be the utility model to be confined to shown in and in described concrete structure and the Applicable scope, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (10)
1, lip seal ring, comprise ring-type straight section (33), ring-type lip section (31) on its ring body (30), it is characterized in that: described ring body (30) has ring-type compensator section (32) between ring-type straight section (33) and ring-type lip section (31), this ring-type compensator section (32) by the inners (33a) of ring-type straight section (33) beginning with respect to ring body (30) axis tilt, and the rear portion that extends to ring-type lip section (31) crosses with it.
2, lip seal ring as claimed in claim 1, it is characterized in that: the lip (31a) of described ring-type lip section (31), rear port (31b) lay respectively at ring-type straight section (33) both sides, and described ring-type compensator section (32) crosses with the rear port (31b) of ring-type lip section (31).
3, lip seal ring as claimed in claim 1 is characterized in that: described ring body (30) has circumferential bulge loop (34), and this circumferential bulge loop (34) was extended radially outwardly by ring-type straight section (33) outer end (33b) beginning, filler is contained hole wall form sealing.
4, lip seal ring as claimed in claim 3, it is characterized in that: the longitudinal section of described circumferential bulge loop (34) is the triangle that cuts point, begun to end to the outer peripheral surface of lip seal ring (30) by ring-type straight section (33) outer end (33b), circumferentially the axial thickness of bulge loop (34) increases progressively.
5, lip seal ring as claimed in claim 1 is characterized in that: the circumferentially uniform through hole (35) that passes for screw rod (20) that offers in described ring-type straight section (33) upper edge.
6, adopt the lip seal device of lip seal ring according to claim 1, include at least two lip seal rings and sleeve, each lip seal ring vertically fixed interval on sleeve, it is characterized in that: described sleeve is assembled vertically by at least three sections rings, screw rod (20) along sections ring radial equipartition is connected to form one each sections ring, and each lip seal ring is carried out precompression.
7, lip seal device as claimed in claim 6 is characterized in that: the axial end of described sections ring acts on the end face of ring-type straight section (33) of lip seal ring.
8, lip seal device as claimed in claim 6 is characterized in that: described each lip seal ring (30) is divided into two groups by quantity and is provided with back-to-back, and promptly the rear port (31b) of the ring-type lip section (31) of these two groups of lip seal rings is relative vertically.
9, lip seal device as claimed in claim 6 is characterized in that: described sleeve has imports two groups of passages (26) between the lip seal ring with lubricant grease.
10, lip seal device as claimed in claim 9 is characterized in that: described passage (26) is formed by the butt joint of the through hole (36) on the ring-type straight section (33) that is opened in sections ring, lip seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200343708U CN2908928Y (en) | 2006-05-29 | 2006-05-29 | Lip sealing ring and lip sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200343708U CN2908928Y (en) | 2006-05-29 | 2006-05-29 | Lip sealing ring and lip sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2908928Y true CN2908928Y (en) | 2007-06-06 |
Family
ID=38128139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200343708U Expired - Fee Related CN2908928Y (en) | 2006-05-29 | 2006-05-29 | Lip sealing ring and lip sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2908928Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631922A (en) * | 2019-09-30 | 2019-12-31 | 中交天和机械设备制造有限公司 | TBM (tunnel boring machine) pressure injection type concrete test device and method |
-
2006
- 2006-05-29 CN CNU2006200343708U patent/CN2908928Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110631922A (en) * | 2019-09-30 | 2019-12-31 | 中交天和机械设备制造有限公司 | TBM (tunnel boring machine) pressure injection type concrete test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |