CN205244387U - Two -way rotatory petal -shaped terminal surface mechanical seal structure - Google Patents
Two -way rotatory petal -shaped terminal surface mechanical seal structure Download PDFInfo
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- CN205244387U CN205244387U CN201521035479.9U CN201521035479U CN205244387U CN 205244387 U CN205244387 U CN 205244387U CN 201521035479 U CN201521035479 U CN 201521035479U CN 205244387 U CN205244387 U CN 205244387U
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- petal
- micropore
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- deep trouth
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Abstract
The utility model provides a two -way rotatory petal -shaped terminal surface mechanical seal structure, including mechanical seal's rotating ring and quiet ring, the mutual contact surface of rotating ring and quiet ring is the terminal surface, rotating ring or quiet ring terminal surface on, along a plurality of petal grooves that can two -way rotation of circumference evenly distributed, every petal groove is all become with a sharp drainage bank of cells by five micropore shallow slots and a micropore deep trouth, the cell type of the similar petal of constitution appearance, the drainage trench in the terminal surface upper reaches and be radial extension, and to be the high -pressure side along the terminal surface radial upper reaches be that low tension side direction width remains unchanged to low reaches, the shallow slot be located the terminal surface upper reaches, the deep trouth is located the petal -shaped groove center that the shallow slot is constituteed, the petal -shaped groove between not slot the region be sealed weir, the clitellum that regional formation was not slotted to terminal surface circumference is sealed dam. The utility model discloses have better fluid water conservancy diversion effect, can realize that the terminal surface just reverses, reduce to let out leakage quantity, improve sealed reliability.
Description
Technical field
The utility model relates to a kind of axle head face seals of rotating machinery, particularly the petal-shaped end surface mechanical sealing structure of a kind of bidirectional rotation.
Background technology
Shaft end seal is indispensable basic components in rotating machinery. Non-contacting seal can be realized end face noncontact, be widely used without wearing and tearing, low energy consumption, anti-high pressure and stability advantages of higher because of it. But because some specific trench structure can not meet rotating steady running. Screw groove end face sealing that can bidirectional rotation has been reported, but under lower-speed state, opening force and the gas film stiffness of end face all decrease, and cause leakage rate to exceed standard.
Summary of the invention
In view of this, the utility model provides bidirectional rotation petal-shaped end surface mechanical sealing structure, can pass through the petal-shaped end surface mechanical sealing structure of bidirectional rotation, in the time of low speed low pressure, improve that liquid film gas film stiffness is little, dynamic pressure effect is strong, opening force is not enough and the problem of fluctuation of service.
The petal-shaped end surface mechanical sealing structure of bidirectional rotation, it is characterized in that: comprise micropore shallow slot, micropore deep trouth, straight line drainage trough, sealing weir, sealing dam, the micropore center of circle, regular pentagon, petal-shaped groove, on described rotating ring or stationary ring end face, along even circumferential multiple petal grooves that can bidirectional rotation that distribute, each petal groove is made up of five micropore shallow slots and a micropore deep trouth and a straight line drainage trough, form the grooved of the similar petal of profile, described straight line drainage trough is positioned at end face upstream and is radially and extends, and be upstream that high-pressure side to downstream is that low-pressure side direction width remains unchanged along end-face diameter, described micropore shallow slot is positioned at end face upstream, described micropore deep trouth is positioned at the petal-shaped groove center of micropore shallow slot composition, between described petal-shaped groove, unslotted region is sealing weir, the endless belt that the circumferential unslotted of described end face region forms is sealing.
The petal-shaped end surface mechanical sealing structure of above-mentioned bidirectional rotation, is characterized in that, five described micropore shallow slots are that symmetry five is petal-shaped, and five petals become 72 ° to be uniformly distributed, and the pentapetalous center of circle is on the regular pentagon summit centered by deep trouth.
The petal-shaped end surface mechanical sealing structure of above-mentioned bidirectional rotation, is characterized in that, the micropore deep trouth number of described petal-shaped fluid slot is 1, degree of depth h0For 0.1-1.0mm, radius r0For 2-3mm, micropore shallow slot number is 5, degree of depth h1For (0.02-0.5) h0, radius r1For 4-5mm.
The petal-shaped end surface mechanical sealing structure of above-mentioned bidirectional rotation, is characterized in that, the distance of described micropore deep trouth centre-to-centre spacing seal face external diameter is 12-20mm.
The petal-shaped end surface mechanical sealing structure of above-mentioned bidirectional rotation, is characterized in that, the described straight line drainage trough degree of depth is 1-90 μ m, and two sidewalls are to be made up of two rays, and equals the drainage trough width near downstream near on high-tension side drainage trough width.
The petal-shaped end surface mechanical sealing structure of above-mentioned bidirectional rotation, is characterized in that, described petal-shaped groove is several along circumferentially distributing symmetrically.
Beneficial effect: the utility model utilizes dynamic pressure effect to improve air film stability in the time of low speed low pressure operation, ensures the steady running of seal, reduces leakage rate simultaneously, reduces fretting wear, improves its service life.
Brief description of the drawings
Fig. 1 is the petal-shaped end surface mechanical sealing structure schematic diagram of the utility model bidirectional rotation;
Fig. 2 is the local enlarged diagram of the petal-shaped end surface mechanical sealing structure of the utility model bidirectional rotation;
Fig. 3 is that the A-A of Fig. 1 is to cutaway view;
Wherein, 1-micropore shallow slot, 2-micropore deep trouth, 3-straight line drainage trough, 4-seals weir, and 5-seals dam, the 6-micropore center of circle, 7-regular pentagon, the petal-shaped groove of 8-.
Detailed description of the invention
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the utility model is described in detail.
As shown in Figure 1: the petal-shaped end surface mechanical sealing structure of this bidirectional rotation, is characterized in that: comprise micropore shallow slot 1, micropore deep trouth 2, straight line drainage trough 3, sealing weir 4, sealing dam 5, the micropore center of circle 6, regular pentagon 7, petal-shaped groove 8.
As shown in accompanying drawing 2 and accompanying drawing 3, the utility model provides a kind of bidirectional rotation petal-shaped end surface mechanical sealing structure, comprises rotating ring and stationary ring. on described rotating ring or stationary ring end face, along even circumferential multiple petal grooves that can bidirectional rotation that distribute, each petal groove is made up of five micropore shallow slots 1 and a micropore deep trouth 2 and a straight line drainage trough 3, form the grooved of the similar petal of profile, described drainage trough is positioned at end face upstream and is radially and extends, and be upstream that high-pressure side to downstream is that low-pressure side direction width remains unchanged along end-face diameter, described shallow slot is positioned at end face upstream, described deep trouth is positioned at the petal-shaped groove center of shallow slot composition, between described petal-shaped groove, unslotted region is sealing weir 4, the endless belt that the circumferential unslotted of described end face region forms is sealing dam 5.
Five micropore shallow slots 1 are that symmetry five is petal-shaped, and five petals become 72 ° to be uniformly distributed, and the pentapetalous center of circle 6 is on the summit of regular pentagon centered by deep trouth 7.
Micropore deep trouth 2 numbers of petal-shaped fluid slot are 1, degree of depth h0For 0.1-1.0mm, radius r0For 2-3mm, micropore shallow slot 1 number is 5, the dark 1 degree h of micropore shallow slot1For (0.02-0.5) h0, radius r1For 4-5mm.
The distance of micropore deep trouth 2 centre-to-centre spacing seal face external diameter C is 12-20mm.
Drainage trough 3 degree of depth are 1-90 μ m, and two sidewalls are to be made up of two rays, and equal the drainage trough width near downstream near on high-tension side drainage trough width.
Petal-shaped groove 8 is several along circumferentially distributing symmetrically.
When seal operation, the pressure current that upstream high pressure produces enters drainage trough 3 under tangential shear action, enters subsequently micropore shallow slot 1, micropore deep trouth 2 along with seal rotates, and forms obvious hydrodynamic pressure end face is separated. Micropore deep trouth 2 can provide good lubricant effect, and micropore shallow slot 1 can provide good dynamic pressure and restriction effect, and the two acts on simultaneously, ensures to seal to stablize continuous service.
Content described in this description embodiment is only enumerating of way of realization to inventive concept; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also and in those skilled in the art is conceived thinkable equivalent technologies means according to the utility model.
Claims (6)
1. the petal-shaped end surface mechanical sealing structure of bidirectional rotation, it is characterized in that: comprise micropore shallow slot (1), micropore deep trouth (2), straight line drainage trough (3), sealing weir (4), sealing dam (5), the micropore center of circle (6), regular pentagon (7), petal-shaped groove (8), on described rotating ring or stationary ring end face, along even circumferential multiple petal grooves (8) that can bidirectional rotation that distribute, each petal groove is made up of five micropore shallow slots (1) and a micropore deep trouth (2) and a straight line drainage trough (3), form the grooved of the similar petal of profile, described straight line drainage trough (3) is positioned at end face upstream and is radially and extends, and be upstream that high-pressure side to downstream is that low-pressure side direction width remains unchanged along end-face diameter, described micropore shallow slot (1) is positioned at end face upstream, described micropore deep trouth (2) is positioned at petal-shaped groove (8) center of micropore shallow slot (1) composition, between described petal-shaped groove (8), unslotted region is sealing weir (4), the endless belt that the circumferential unslotted of described end face region forms is sealing dam (5).
2. the petal-shaped end surface mechanical sealing structure of bidirectional rotation as claimed in claim 1, it is characterized in that, described five micropore shallow slots (1) are that symmetry five is petal-shaped, five petals become 72 ° to be uniformly distributed, and the pentapetalous center of circle is on the regular pentagon centered by deep trouth (7) summit.
3. the petal-shaped end surface mechanical sealing structure of bidirectional rotation as claimed in claim 1, is characterized in that, micropore deep trouth (2) number of described petal-shaped fluid slot is 1, degree of depth h0For 0.1-1.0mm, radius r0For 2-3mm, micropore shallow slot (1) number is 5, degree of depth h1For (0.02-0.5) h0, radius r1For 4-5mm.
4. the petal-shaped end surface mechanical sealing structure of bidirectional rotation as claimed in claim 1, is characterized in that, the distance of described micropore deep trouth (2) centre-to-centre spacing seal face external diameter is 12-20mm.
5. the petal-shaped end surface mechanical sealing structure of bidirectional rotation as claimed in claim 1, it is characterized in that, described straight line drainage trough (3) degree of depth is 1-90 μ m, two sidewalls are to be made up of two rays, and equal the drainage trough width near downstream near on high-tension side drainage trough width.
6. the petal-shaped end surface mechanical sealing structure of bidirectional rotation as claimed in claim 1, is characterized in that, described petal-shaped groove (8) is several along circumferentially distributing symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521035479.9U CN205244387U (en) | 2015-12-10 | 2015-12-10 | Two -way rotatory petal -shaped terminal surface mechanical seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521035479.9U CN205244387U (en) | 2015-12-10 | 2015-12-10 | Two -way rotatory petal -shaped terminal surface mechanical seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205244387U true CN205244387U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521035479.9U Expired - Fee Related CN205244387U (en) | 2015-12-10 | 2015-12-10 | Two -way rotatory petal -shaped terminal surface mechanical seal structure |
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| CN (1) | CN205244387U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542934A (en) * | 2017-10-31 | 2018-01-05 | 南昌工程学院 | A kind of mechanical seal structure for imitating petal type groove |
| CN111566396A (en) * | 2018-08-09 | 2020-08-21 | Nok株式会社 | Sealing ring |
| CN115715352A (en) * | 2020-07-06 | 2023-02-24 | 伊格尔工业股份有限公司 | Sliding component |
| CN115768989A (en) * | 2020-07-06 | 2023-03-07 | 伊格尔工业股份有限公司 | Sliding member |
-
2015
- 2015-12-10 CN CN201521035479.9U patent/CN205244387U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542934A (en) * | 2017-10-31 | 2018-01-05 | 南昌工程学院 | A kind of mechanical seal structure for imitating petal type groove |
| CN111566396A (en) * | 2018-08-09 | 2020-08-21 | Nok株式会社 | Sealing ring |
| CN115715352A (en) * | 2020-07-06 | 2023-02-24 | 伊格尔工业股份有限公司 | Sliding component |
| CN115768989A (en) * | 2020-07-06 | 2023-03-07 | 伊格尔工业股份有限公司 | Sliding member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160518 Termination date: 20161210 |