CN201696617U - Bidirectional-rotatable gas lubricating non-contact mechanical sealing device - Google Patents
Bidirectional-rotatable gas lubricating non-contact mechanical sealing device Download PDFInfo
- Publication number
- CN201696617U CN201696617U CN201020240148XU CN201020240148U CN201696617U CN 201696617 U CN201696617 U CN 201696617U CN 201020240148X U CN201020240148X U CN 201020240148XU CN 201020240148 U CN201020240148 U CN 201020240148U CN 201696617 U CN201696617 U CN 201696617U
- Authority
- CN
- China
- Prior art keywords
- groove
- contact mechanical
- way rotation
- dynamic pressure
- ring
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Mechanical Sealing (AREA)
Abstract
The utility model relates to a bidirectional-rotatable gas lubricating non-contact mechanical sealing device, which belongs to the technical field of mechanical sealing. A sealing cavity of the sealing device is placed inside a rotating mechanical machine casing, a rotating shaft penetrates through a hole of the sealing cavity, a movable ring is fixed onto the rotating shaft by a fixing component, and a static ring fits with the movable ring. The sealing device is characterized in that an elastic element and a push ring are mounted in the sealing cavity, the elastic element is positioned between the sealing cavity and the push ring fitting with the back surface of the static ring, the static ring mutually fits with the movable ring under the action of elastic force of the elastic element, two mutually fit surfaces are sealing end surfaces, groove sets are arranged on the sealing end surfaces of the movable ring or/and the static ring, the groove sets are circumferentially distributed along the end surfaces, each groove set comprises a radial gas supplying groove and dynamic pressure grooves, and the dynamic pressure grooves are distributed on the left sides and the right sides of the gas supplying grooves. The bidirectional-rotatable gas lubricating non-contact mechanical sealing device has the advantages of simple structure, compact assembly, fine sealing performance, high bearing capacity, convenient processing and manufacturing, bidirectional rotational sealing, wide utilization range and the like.
Description
Technical field
The utility model belongs to the mechanical sealing technology field, particularly relates to a kind of gas lubrication non-contact mechanical seal device that can two-way rotation.
Background technique
At present, screw groove end face sealing that can two-way rotation is as Chinese patent 98218316.X " bidirectional rotation double-row double-blade spiral groove face sealing ", 01102213.2 " spiral groove end sealer capable of being rotated in both directions ", U. S. Patent 5090712 etc.They all are to have the dynamic pressure groove on rotating ring (abbreviation rotating ring) seal face of mutually fitting and in stationary ring (abbreviation stationary ring) seal face at least one, and the geometrical shape of dynamic pressure groove is the core technology of foregoing invention.When the running shaft of rotating machinery drives rotating ring rotation fixed thereon, because the hydrodynamic effect of dynamic pressure groove, the sealing gas that enters this groove is compressed, its pressure is raise, this pressure acts on the dynamic and static ring seal face of mutual applying, and these two faces are pushed open, makes it to disengage, and between two faces, forming continuous, the stable very thin air film of one deck, this air film has certain bearing capacity and rigidity.Because the air film between dynamic and static ring sealing surface has certain thickness, there be the high pressure side of a spot of sealing gas to leak into low voltage side along this air film from sealing, can play effect lubricated and cooling, can suppress a large amount of leakages of sealing gas again, reach the purpose of sealing.But technical problems such as existing seal arrangement exists sealing effect poor, and bearing capacity is low, and using scope is little.
Summary of the invention
The utility model provides a kind of gas lubrication non-contact mechanical seal device that can two-way rotation for solving the technical problem that exists in the known technology.
The purpose of this utility model provides a kind of simple in structure, and assembling is compact, good airproof performance, bearing capacity is strong, processing and fabricating is convenient, can two-way rotary seal, characteristics such as using scope is wide can two-way rotation the gas lubrication non-contact mechanical seal device.Behind this seal arrangement of equipment,, realize the non-contact operation under the two-way rotating condition effectively no matter running shaft is rotated in the forward or during counter-rotating, all can form continuous, stable sealing air film between dynamic and static ring seal face.
The utility model can two-way rotation the gas lubrication non-contact mechanical seal device, comprise seal chamber, rotating ring, stationary ring, seal ring, elastic element, throw-out collar, fixing-assembly; Has the groove group in rotating ring and the stationary ring seal face at least one, this groove group distributes along the circumferencial direction of seal face, each groove group comprises air supply trough radially and the dynamic pressure groove that distributes at the air supply trough left and right sides, and good dynamic pressure groove can guarantee that seal arrangement is rotated in the forward at running shaft, can both reach above-mentioned functions during counter-rotating.
The utility model can two-way rotation the technological scheme taked of gas lubrication non-contact mechanical seal device be:
Gas lubrication non-contact mechanical seal device that can two-way rotation comprises seal chamber, rotating ring, stationary ring, seal ring and fixing-assembly; Seal chamber places in the casing of rotating machinery, and running shaft passes the hole of seal chamber; Fixing-assembly is fixed on rotating ring on the running shaft, stationary ring and rotating ring are fitted, be characterized in: seal chamber is equipped with elastic element and throw-out collar, elastic element is between seal chamber and throw-out collar, fit in the back side of throw-out collar and stationary ring, stationary ring and rotating ring are fitted mutually under the elastic force effect of elastic element, and two mutual faying surfaces are seal face; Rotating ring is or/and the stationary ring seal face has the groove group, and the groove group distributes along the circumferencial direction of seal face, and each groove group is by radially air supply trough and dynamic pressure groove constitute air supply trough left side and right side distribution dynamic pressure groove.
The utility model can two-way rotation the gas lubrication non-contact mechanical seal device can also adopt following technological scheme:
Described gas lubrication non-contact mechanical seal device that can two-way rotation is characterized in: the angle of left side and right side dynamic pressure groove equates that angle is 10-60 °.
Described gas lubrication non-contact mechanical seal device that can two-way rotation, be characterized in: the air supply trough degree of depth in the groove group is 4-25 μ m.
Described gas lubrication non-contact mechanical seal device that can two-way rotation, be characterized in: the air supply trough width in the groove group is 3-8mm.
Described gas lubrication non-contact mechanical seal device that can two-way rotation is characterized in: two sidewalls of air supply trough overlap two rays or two the parallel radial line segments by the seal face center of circle.
Described gas lubrication non-contact mechanical seal device that can two-way rotation, be characterized in: the air supply trough degree of depth shoals gradually from outer radial internal diameter direction groove depth.
Described gas lubrication non-contact mechanical seal device that can two-way rotation is characterized in: groove group unslotted part between the shared angle of circumferencial direction and two groove groups is 1-4 at the shared angle ratio of circumferencial direction.
Described gas lubrication non-contact mechanical seal device that can two-way rotation, be characterized in: left side and right side dynamic pressure groove depth are 2-10 μ m.
Described gas lubrication non-contact mechanical seal device that can two-way rotation is characterized in: along the circumferential direction from air supply trough dynamic pressure groove and right side dynamic pressure groove direction to the left respectively, groove depth shoals gradually for left side and right side dynamic pressure groove depth.
Described gas lubrication non-contact mechanical seal device that can two-way rotation, be characterized in: the groove root border of groove group is a circular arc, circular arc overlaps with the seal face internal diameter center of circle.
Described gas lubrication non-contact mechanical seal device that can two-way rotation, be characterized in: the ratio of the radial length of the radial length of air supply trough external lateral portion and dynamic pressure slot part is 0.1-2.
Described gas lubrication non-contact mechanical seal device that can two-way rotation, be characterized in: the radial length of groove group and the planar section of unslotted are 0.5-2.5 at radially shared height ratio.
Described gas lubrication non-contact mechanical seal device that can two-way rotation is characterized in: groove group quantity is the 3-30 group.
Advantage that the utlity model has and good effect:
Gas lubrication non-contact mechanical seal device that can two-way rotation is owing to adopted the utility model brand-new technology scheme, compared with prior art, the dynamic pressure effect of running shaft forward or counter-rotating time slot group all can form effective air film supported ability, and trench structure simply is easy to optimal design and processing, is specially adapted to the user scene and may exists on the rotating machinery of counter-rotating.The utlity model has simple in structure, assembling is compact, good airproof performance, bearing capacity is strong, processing and fabricating is convenient, can two-way rotary seal, and advantage such as using scope is wide, be applicable to the sealing of running shaft in the rotating machineries such as various turbocompressors, decompressor, blower fan, pump, reactor stirrer, dry gas seal that particularly can two-way rotation.
Description of drawings
Fig. 1 is the utility model sectional structure schematic representation;
Fig. 2 is a groove group structural representation on the rotating ring seal face among Fig. 1.
Among the figure, 1. running shaft, 2. casing, 3. seal chamber, 4. stationary ring, 5. rotating ring, 6. elastic element, 7. throw-out collar, 8. straight pin, 9. seal ring, 10. fixing-assembly.
Embodiment
For further understanding model utility content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Gas lubrication non-contact mechanical seal device that can two-way rotation comprises seal chamber, rotating ring, stationary ring, seal ring, elastic element, throw-out collar, fixing-assembly; Constitute between the running shaft 1 of rotating machinery and the casing 2 sealed space is installed, seal chamber 3 places in the casing 2 of rotating machinery, and running shaft 1 passes the hole of seal chamber 3; Fixing-assembly 10 is fixed on rotating ring 5 on the running shaft 1, stationary ring 4 is fitted with rotating ring 5, elastic element 6 is between seal chamber 3 and throw-out collar 7, throw-out collar 7 is fitted with the back side of stationary ring 4, stationary ring 4 and rotating ring 5 are fitted mutually, two mutual faying surfaces are seal face, and seal ring 9 is installed between stationary ring 4 and the throw-out collar 7, prevent that sealed fluid is by leaking herein; The straight pin 8 that is fixed on the seal chamber 3 is used for preventing that stationary ring 4 from rotating, but allows it to move axially.The utility model feature is: have at least one to have this groove group on rotating ring 5 and stationary ring 4 end faces, this groove group distributes along the circumferencial direction of seal face as shown in Figure 2, and each groove group comprises air supply trough A, and its degree of depth is 4-25 μ m, and its width S is 3-8mm.Two sidewalls of air supply trough are made of two rays by the seal face center of circle, and two rays are not parallel; Also can constitute by two parallel radial line segments.The and arranged on left and right sides of air supply trough A has the dynamic pressure groove, and the dynamic pressure groove is exactly the shallow slot of processing on seal face, and the outward appearance molded lines of this groove sidewall can be circular arc line, log spiral, or spiral of Archimedes, quadratic curve, straight line.The dynamic pressure groove is a symmetry axis with air supply trough A, distributes in its both sides, and the dynamic pressure groove in air supply trough left side and the dynamic pressure groove on right side are symmetrical, are symmetrical as B and B '.The angle β of the shared circumferencial direction of dynamic pressure groove in left side
1Angle β with the shared circumferencial direction of dynamic pressure groove on right side
2Equate β
1=β
2
Each dynamic pressure groove group is β in the shared angle of circumferencial direction, β=β
1+ β
2, the planar section of unslotted is γ in the shared angle of circumferencial direction between two groups of dynamic pressure grooves, β/γ=1-4.
The external diameter of two mutual fitting parts of seal face of dynamic and static ring is R
o, internal diameter is R
i, the groove root radius is R
g, dynamic pressure groove and air supply trough intersection point radius are R
d, dynamic pressure groove group is at radially shared height (R
o-R
g) with the planar section of unslotted and Ba Qu at radially shared height (R
g-R
i) ratio: (R
o-R
g)/(R
g-R
i)=0.5-2.5.
Dynamic pressure groove in left side equates with the absolute value of the angle of right side dynamic pressure groove, but direction is opposite, one side is a positive angle, opposite side is a negative angle, viewpoint definition is: on the curve of above-mentioned dynamic pressure groove outward appearance molded lines, certain any tangent line and cross angle between the concentrically ringed tangent line of seal face of this point, the absolute value of angle | α |=10-60 °.
Radial length (the R of air supply trough external lateral portion
o-R
d) with the radial length (R of dynamic pressure slot part
d-R
g) ratio: (R
o-R
d)/(R
d-R
g)=0.1-2.
The depth bounds of each dynamic pressure groove is 2-10 μ m.All the degree of depth of dynamic pressure groove can equate, also can be unequal.For example, radially shoal gradually to endoporus direction groove depth from cylindrical; Simultaneously, the degree of depth of each dynamic pressure groove also can change in a circumferential direction, for example begins to shoal gradually to both sides from air supply trough.
Quantity according to the different dynamic pressure groove groups (being shared zone, β angle) of rotating ring and stationary ring size is also different, and the big more then groove of size group quantity is many more.Present embodiment groove group quantity is 8 groups.
No matter running shaft is rotated in the forward, perhaps counter-rotating, mechanical seal grooved that can two-way rotation of the present utility model can form the fluid film of continous-stable between the dynamic and static ring sealing end face, and the bearing capacity of fluid film and rigidity are bigger, realize the sealing under the two-way rotating condition effectively.The utility model is applicable to the shaft end seal of rotating machineries such as various compressors, pump, reactor stirrer, dry gas seal that particularly can two-way rotation.
Claims (13)
1. gas lubrication non-contact mechanical seal device that can two-way rotation comprises seal chamber, rotating ring, stationary ring, seal ring and fixing-assembly; Seal chamber places in the casing of rotating machinery, and running shaft passes the hole of seal chamber; Fixing-assembly is fixed on rotating ring on the running shaft, stationary ring and rotating ring are fitted, it is characterized in that: seal chamber is equipped with elastic element and throw-out collar, elastic element is between seal chamber and throw-out collar, fit in the back side of throw-out collar and stationary ring, stationary ring and rotating ring are fitted mutually under the elastic force effect of elastic element, and two mutual faying surfaces are seal face; Rotating ring is or/and the stationary ring seal face has the groove group, and the groove group distributes along the circumferencial direction of seal face, and each groove group is by radially air supply trough and dynamic pressure groove constitute air supply trough left side and right side distribution dynamic pressure groove.
2. gas lubrication non-contact mechanical seal device that can two-way rotation according to claim 1 is characterized in that: the angle of left side and right side dynamic pressure groove equates that angle is 10-60 °.
3. gas lubrication non-contact mechanical seal device that can two-way rotation according to claim 1, it is characterized in that: the air supply trough degree of depth in the groove group is 4-25 μ m.
4. gas lubrication non-contact mechanical seal device that can two-way rotation according to claim 1, it is characterized in that: the air supply trough width in the groove group is 3-8mm.
5. gas lubrication non-contact mechanical seal device that can two-way rotation according to claim 1 is characterized in that: two sidewalls of air supply trough overlap two rays or two the parallel radial line segments by the seal face center of circle.
6. gas lubrication non-contact mechanical seal device that can two-way rotation according to claim 1, it is characterized in that: the air supply trough degree of depth shoals gradually from outer radial internal diameter direction groove depth.
According to claim 1 can two-way rotation the gas lubrication non-contact mechanical seal device, it is characterized in that: groove group unslotted part between the shared angle of circumferencial direction and two groove groups is 1-4 at the shared angle ratio of circumferencial direction.
8. according to the described gas lubrication non-contact mechanical seal device that can two-way rotation of the arbitrary claim of claim 1 to 7, it is characterized in that: left side and right side dynamic pressure groove depth are 2-10 μ m.
9. according to the described gas lubrication non-contact mechanical seal device that can two-way rotation of the arbitrary claim of claim 1 to 7, it is characterized in that: left side and right side dynamic pressure groove depth are along the circumferential direction distinguished dynamic pressure groove and right side dynamic pressure groove direction to the left from air supply trough, and groove depth shoals gradually.
10. according to the described gas lubrication non-contact mechanical seal device that can two-way rotation of the arbitrary claim of claim 1 to 7, it is characterized in that: the groove root border of groove group is a circular arc, and circular arc overlaps with the seal face internal diameter center of circle.
11. according to the described gas lubrication non-contact mechanical seal device that can two-way rotation of the arbitrary claim of claim 1 to 7, it is characterized in that: the ratio of the radial length of the radial length of air supply trough external lateral portion and dynamic pressure slot part is 0.1-2.
12. according to the described gas lubrication non-contact mechanical seal device that can two-way rotation of the arbitrary claim of claim 1 to 7, it is characterized in that: the radial length of groove group and the planar section of unslotted are 0.5-2.5 at radially shared height ratio.
13. according to the described gas lubrication non-contact mechanical seal device that can two-way rotation of the arbitrary claim of claim 1 to 7, it is characterized in that: groove group quantity is the 3-30 group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020240148XU CN201696617U (en) | 2010-06-29 | 2010-06-29 | Bidirectional-rotatable gas lubricating non-contact mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020240148XU CN201696617U (en) | 2010-06-29 | 2010-06-29 | Bidirectional-rotatable gas lubricating non-contact mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201696617U true CN201696617U (en) | 2011-01-05 |
Family
ID=43397859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020240148XU Expired - Lifetime CN201696617U (en) | 2010-06-29 | 2010-06-29 | Bidirectional-rotatable gas lubricating non-contact mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201696617U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893092A (en) * | 2010-06-29 | 2010-11-24 | 杨惠霞 | Bilaterally rotary gas lubrication non-contact mechanical seal device |
| CN103267132A (en) * | 2013-05-28 | 2013-08-28 | 南京林业大学 | Self-pumping fluid-dynamic-pressure-type mechanical seal |
| CN112524253A (en) * | 2020-11-29 | 2021-03-19 | 山东正铭流体控制设备有限公司 | Mechanical sealing device with heating and pneumatic stirring functions |
-
2010
- 2010-06-29 CN CN201020240148XU patent/CN201696617U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893092A (en) * | 2010-06-29 | 2010-11-24 | 杨惠霞 | Bilaterally rotary gas lubrication non-contact mechanical seal device |
| CN103267132A (en) * | 2013-05-28 | 2013-08-28 | 南京林业大学 | Self-pumping fluid-dynamic-pressure-type mechanical seal |
| CN103267132B (en) * | 2013-05-28 | 2015-08-05 | 南京林业大学 | From the mechanical seal of pumping Hydrodynamic pressure type |
| CN112524253A (en) * | 2020-11-29 | 2021-03-19 | 山东正铭流体控制设备有限公司 | Mechanical sealing device with heating and pneumatic stirring functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101893092A (en) | Bilaterally rotary gas lubrication non-contact mechanical seal device | |
| CN102619742B (en) | For bidirectional rotary internal pressure pump dry gas sealing device | |
| CN2460801Y (en) | Sealing device for spiral flute end capable of bidirectional rotation | |
| TWI694210B (en) | Super high speed blower | |
| CN1167890C (en) | Spiral groove end sealer capable of being rotated in both directions | |
| TWI704297B (en) | Hybrid dynamic pressure gas thrust bearing | |
| CN205350045U (en) | Gaseous journal bearing of slot type dynamic pressure | |
| KR102459648B1 (en) | sliding parts | |
| US10228015B2 (en) | Hybrid dynamic pressure gas radial bearing | |
| CN201891839U (en) | Dry gas sealing friction pair | |
| CN205877198U (en) | Mechanical seal ring with oval groove | |
| CN107218396B (en) | A kind of end face has the mechanical seal structure of vein shape shape slot | |
| CN201696617U (en) | Bidirectional-rotatable gas lubricating non-contact mechanical sealing device | |
| CN100588861C (en) | Dynamic seal device | |
| US20170138395A1 (en) | Ball bearing assembly | |
| CN104895924A (en) | Hybrid aerodynamic journal bearing | |
| CN206754279U (en) | Floating ring type damping seal device | |
| CN203979126U (en) | The whole four-point contact ball of band sealing | |
| CN108916234B (en) | Bearing assembly and compressor with same | |
| CN107795693B (en) | A kind of diaphragm spring compensation type mechanical seal device | |
| CN104006071A (en) | Overall four-point contact ball bearing with seal | |
| CN205639618U (en) | Mechanical seal end face slot type structure with bispin is to hydrodynamic effect | |
| CN114251455A (en) | Mechanical seal end face with double-rotation-direction dynamic pressure effect | |
| CN108105391B (en) | Dry gas sealing structure with three-dimensional one-way spiral groove | |
| CN107366748B (en) | VW mechanical seal end face structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN SCI-CREATE SEALING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: YANG HUIXIA Effective date: 20110311 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110311 Address after: 300385 11A block, Jimei Industrial Park, Xiqing Economic Development Zone, Tianjin Patentee after: Tianjin Sairui Sealing Technology Co., Ltd. Address before: 300385 11A block, Jimei Industrial Park, Xiqing Economic Development Zone, Tianjin Patentee before: Yang Huixia |
|
| ASS | Succession or assignment of patent right |
Owner name: DALIAN HUAYANG GUANGDA SEALING CO., LTD. Free format text: FORMER OWNER: TIANJIN SCI-CREATE SEALING TECHNOLOGY CO., LTD. Effective date: 20120709 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300385 XIQING, TIANJIN TO: 116036 DALIAN, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120709 Address after: 116036, 25, Xu Xu Road, Dalian, Ganjingzi, Liaoning Patentee after: Dalian Huayang Seals Co., Ltd. Address before: 300385 11A block, Jimei Industrial Park, Xiqing Economic Development Zone, Tianjin Patentee before: Tianjin Sairui Sealing Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: DALIAN HUAYANG SEALS CO., LTD. Free format text: FORMER NAME: DALIAN HUAYANG GUANGDA SEALING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 116036, 25, Xu Xu Road, Dalian, Ganjingzi, Liaoning Patentee after: DALIAN HUAYANG SEALS CO., LTD. Address before: 116036, 25, Xu Xu Road, Dalian, Ganjingzi, Liaoning Patentee before: Dalian Huayang Seals Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110105 |
|
| CX01 | Expiry of patent term |