CN202251980U - Mechanical sealing device - Google Patents
Mechanical sealing device Download PDFInfo
- Publication number
- CN202251980U CN202251980U CN2011203442227U CN201120344222U CN202251980U CN 202251980 U CN202251980 U CN 202251980U CN 2011203442227 U CN2011203442227 U CN 2011203442227U CN 201120344222 U CN201120344222 U CN 201120344222U CN 202251980 U CN202251980 U CN 202251980U
- Authority
- CN
- China
- Prior art keywords
- ring
- throw
- out collar
- rotating
- spring seat
- 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 - Fee Related
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a mechanical sealing device, which is sleeved outside a rotary shaft in a machine casing and comprises a static ring, a movable ring, a push ring and a spring seat. The static ring is fixedly connected with the machine casing, a static ring sealing ring is arranged between the static ring and the machine casing, and the static ring is in clearance fit with the rotary shaft. The movable ring is arranged on the inner side of the static ring, the outer end of the movable ring abuts against the static ring, and a movable ring sealing ring is arranged between the movable ring and the rotary shaft. The push ring is positioned on the inner side of the movable ring, and restrain on relative rotation is formed between the push ring and the movable ring. The spring seat is fixedly connected with the rotary shaft, and the spring seat is positioned on the inner side of the push ring. One end of a pressure spring abuts against the spring seat, and the other end of the pressure spring abuts against the push ring. Rotation sealing surface accuracy is formed between abutting end faces of the movable ring and the static ring. When the rotary shaft rotates, the movable ring abuts against the static ring and rotates relative to the static ring. A nickel base hard alloy layer is coated on an abutting end face of the static ring corresponding to the movable ring. Thus, sealing rotation between the movable ring and the static ring is achieved, the movable ring and the static ring are abrasion-resistant and cannot be damaged due to the fact that materials are fragile excessively, stable running of sealing devices is obtained, and service life is prolonged.
Description
Technical field
The utility model relates to a kind of seal arrangement of machinery, particularly a kind of seal arrangement of rotary machine.
Background technique
The seal arrangement of rotary machine comprises rotating ring, stationary ring usually in the existing technology at present; Wherein, Be fastened and connected through seal ring between stationary ring and the casing, moving ring sleeve is connected to the rotatingshaft of slewing gear and with the rotatingshaft rotation, has the butt end face of the friction of relatively rotating between the dynamic and static ring; Have between the end face and rotate airtight surface accuracy; Rotating ring is through the spring action that pushes of the other end, and the suitable butt pressure that has between maintenance and the rotating ring butt end face is guaranteed the sealing effect between the dynamic and static ring; Keep stable between this butt end face that structure maintenance sealing effect is stable for a long time, effective crucial part is rotating ring, stationary ring; Therefore must control the frictional loss between the end face; The shortcoming of existing technology is that dynamic and static ring uses single stainless steel or Hardmetal materials to process; Stainless steel material is not wear-resisting to cause the seal arrangement life-span short, and Hardmetal materials is crisp excessively, and is fragile in the transmission process.
The model utility content
The utility model is in order to overcome defective in the above-mentioned existing technology, can to realize the sealed rotational between the dynamic and static ring, and is not only wear-resisting but also do not cross crisp the damage because of material, realizes the long lifetime work that seal arrangement is stable.
For realizing above-mentioned purpose, the utility model provides a kind of mechanical seal device, and the rotating shaft that is socketed in the casing is outside, comprising: stationary ring, and it is socketed in said rotating shaft outside and is fastenedly connected with said casing, is provided with the stationary ring seal ring between stationary ring and the casing; It between stationary ring and the rotating shaft Spielpassung; Rotating ring, it is socketed in the rotating shaft outside and is positioned at the stationary ring inboard, and the outer distolateral and stationary ring of rotating ring connects, and establishes seal ring of moving ring between rotating ring and the rotating shaft; Throw-out collar, it is socketed in the rotating shaft outside and is positioned at the rotating ring inboard, forms counterrotating constraint between throw-out collar and the rotating ring; Spring seat, it is socketed in the rotating shaft outside and is fixedly connected with rotating shaft, and spring seat is positioned at the throw-out collar inboard; Pressure spring one end is connected on the spring seat, and the other end is connected on the throw-out collar; Have between the dynamic and static ring butt end face and rotate airtight surface accuracy, during the rotating shaft rotation, rotating ring and stationary ring connect and rotate relatively with stationary ring; Be coated with the carbide alloy of nickel-base layer on the butt end face of stationary ring to rotating ring.
Wherein, throw-out collar forms the aforementioned relative rotation condition between throw-out collar and the rotating ring towards the end face ring of rotating ring week, extend a plurality of movable driving pins that embed the rotating ring end faces vertically.
Wherein, pressure spring quantity is a plurality of, and is provided with along spring seat ring week.
Wherein, Spring seat ring week, be provided with the stepped shaft guiding via hole of a plurality of perforations towards throw-out collar vertically; Step bolt passes in via hole under the constraint of guiding via hole; Its helical thread portion is fastenedly connected with the set corresponding screw of throw-out collar, realizes that moving axially between spring seat and the throw-out collar is connected and radially relative rotation condition.
Wherein, spring seat is provided with the counterbore of ccontaining pressure spring.
Wherein, rotating ring is provided with the otch or the counterbore of corresponding throw-out collar driving pin towards the end face of throw-out collar, and driving pin embeds the back and drives rotating ring and rotate with rotating shaft.
Wherein, the thickness of carbide alloy of nickel-base layer can be the 0.4-07 millimeter.
Wherein, between throw-out collar and the rotating ring, the corresponding position of seal ring of moving ring is provided with and pushes away pad.
Compared with prior art, the utlity model has following beneficial effect:
1, through the butt end face of rotating ring being covered certain thickness carbide alloy of nickel-base layer, realize the sealed rotational between the dynamic and static ring at stationary ring, not only wear-resisting but also do not cross crisp the damage because of material, can realize the long lifetime work that seal arrangement is stable;
2, the design of ladder-type via hole on the spring seat and corresponding ladder-type bolt both can realize radially counterrotating constraint between spring seat and the throw-out collar, can realize the axially level and smooth mobile of throw-out collar, rotating ring again.
Description of drawings
Fig. 1 is the main sectional view of the utility model.
In conjunction with the accompanying drawing following reference character of mark above that:
The 1-rotating shaft, the 2-stationary ring, 21-stationary ring seal ring, the 22-coating layer, the 3-rotating ring, the 31-seal ring of moving ring, 32-pushes away pad, 4-throw-out collar, 41-driving pin, 5-pressure spring, 6-spring seat, the 61-via hole that leads, 62-counterbore, 63-bolt, 7-casing.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.
The mechanical seal device of the utility model is as shown in Figure 1, comprises the rotating shaft 1, spring seat 6, throw-out collar 4, rotating ring 3, pressure spring 5 and the stationary ring 2 that are installed in the casing 7.Wherein, fixedly sleeved being installed in the casing 7 and through seal ring 21 and casing 7 of stationary ring 2 are tightly connected, rotating shaft 1 be socketed in the stationary ring 2 and with stationary ring 2 Spielpassung.Spring seat 6, throw-out collar 4, rotating ring 3 are all loop configuration and socket-connecting with rotating shaft 1 one by one from inside to outside (like Fig. 1 socket successively from left to right), and the position relative fixed of spring seat 6 and rotating shaft 1 is fastenedly connected (not shown) through tight fixed bolt radially.Move axially between the Spielpassung socket between throw-out collar 4 and the rotating shaft 1, throw-out collar 4 and spring seat 6 and be connected (promptly can on axial direction, move) between the two, ring is provided with a plurality of pressure springs 5 week between spring seat 6 and throw-out collar 4 opposing end faces.Throw-out collar 4 towards the end face ring of rotating ring 3 week, extend axially out a plurality of movable driving pins 41 that embed the rotating ring end faces (be throw-out collar 4 with rotating ring 3 in relative fixed in the radial direction).Be provided with O-ring seal 31 between rotating ring 3 and the rotating shaft 1; And rotating ring 3 can move along the axial seal of rotating shaft; The end face of the other end of rotating ring 3 and stationary ring 2 connects; The butt end face of stationary ring is coated with the carbide alloy of nickel-base coating layer 22 of 0.4-07 millimeter thickness, has between the dynamic and static ring butt end face to rotate airtight surface accuracy.
Further as shown in Figure 1; Spring seat 6 ring week, be axially arranged with the stepped shaft guiding via hole 61 of a plurality of perforations from large to small towards throw-out collar; Step bolt 63 passes in hole 61 under the constraint of guiding via hole 61; The front end of ladder-type bolt 61 is helical thread portion and is fastenedly connected with throw-out collar 4 set corresponding screws; Can realize that through ladder-type bolt 61 and aforementioned pressure spring 5 moving axially between spring seat 6 and the throw-out collar 4 is connected, ladder-type bolt 61 drives throw-out collars 4 with rotating shaft 1 co-rotation.
Further as shown in Figure 1, spring seat 6 is towards the counterbore 62 that is provided with a plurality of intercalation pressure springs 5 end face ring week of throw-out collar, and pressure spring 5 one ends insert in the counterbore 62 and connect with the bottom surface of counterbore 62, and the end face of the other end of pressure spring 5 and throw-out collar 4 connects.Also be provided with between throw-out collar 4 and the rotating ring 3 simultaneously and fill up 32, after rotating ring and stationary ring relatively rotate wearing and tearing, promote the butt pressure between rotating rings maintenance and the stationary ring through pushing away pad 32 at throw-out collar 4 under the thrusting action of pressure spring 5 with pushing away of throw-out collar end face, seal ring of moving ring 31 butts.
Further as shown in Figure 1; Rotating ring 3 is provided with the otch or the counterbore (not shown) of corresponding throw-out collar driving pin 41 towards the end face of throw-out collar 4; One end surfaces of driving pin 41 is a screw thread; Be fastenedly connected through screw thread and throw-out collar 4, the other end surface is the light face, drives rotating ring behind the embedding rotating ring otch and rotates with rotating shaft.
When rotating shaft 1 was rotated, stationary ring 2 and casing 7 were fastenedly connected fixed, and spring seat 6 is because of radially fastening with rotating shaft 1, with rotating shaft 1 rotation.Because the effect of ladder-type bolt 63 and driving pin 41 makes throw-out collar 4 and rotating ring 3 follow spring seat 6 and rotates jointly.Rotating ring 3 is remaining the state of compressing in the rotary course relatively with stationary ring 2, so the carbide alloy of nickel-base layer of the utility model stationary ring end of adopting can effectively prevent because of the heavy wear of generation during rotation relatively under compressing state each other of dynamic and static ring.
Compared with prior art; The utility model is through covering certain thickness carbide alloy of nickel-base layer at stationary ring to the butt end face of rotating ring; Realize that the sealed rotational between the dynamic and static ring is not only wear-resisting but also do not cross crisp the damage because of material, realize the long lifetime work that seal arrangement is stable.
More than disclosed two specific embodiments that are merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.
Claims (8)
1. a mechanical seal device is socketed in the rotating shaft outside in the casing, comprising:
Stationary ring, it is socketed in said rotating shaft outside and is fastenedly connected with said casing; Be provided with the stationary ring seal ring between stationary ring and the casing; It between stationary ring and the rotating shaft Spielpassung;
Rotating ring, it is socketed in said rotating shaft outside and is positioned at said stationary ring inboard, and the outer distolateral and stationary ring of rotating ring connects; Establish seal ring of moving ring between rotating ring and the said rotating shaft;
Throw-out collar, it is socketed in said rotating shaft outside and is positioned at said rotating ring inboard, forms counterrotating constraint between throw-out collar and the rotating ring;
Spring seat, it is socketed in said rotating shaft outside and is fixedly connected with said rotating shaft, and it is inboard that spring seat is positioned at said throw-out collar; Pressure spring one end is connected on the spring seat, and the other end is connected on the said throw-out collar;
Have between the said dynamic and static ring butt end face and rotate airtight surface accuracy, during the rotating shaft rotation, said rotating ring and stationary ring connect and rotate relatively with stationary ring; It is characterized in that,
Be coated with the carbide alloy of nickel-base layer on the butt end face of said stationary ring to rotating ring.
2. mechanical seal device according to claim 1 is characterized in that, said throw-out collar forms the said relative rotation condition between throw-out collar and the rotating ring towards the end face ring of rotating ring week, extend a plurality of movable driving pins that embed the rotating ring end faces vertically.
3. mechanical seal device according to claim 1 and 2 is characterized in that, said pressure spring quantity is a plurality of, and is provided with along spring seat ring week.
4. mechanical seal device according to claim 3; It is characterized in that; Said spring seat ring week, be provided with the stepped shaft guiding via hole of a plurality of perforations towards throw-out collar vertically; Step bolt passes in via hole under the constraint of guiding via hole, and its helical thread portion is fastenedly connected with the set corresponding screw of throw-out collar, realizes that moving axially between spring seat and the throw-out collar is connected and radially relative rotation condition.
5. mechanical seal device according to claim 3 is characterized in that said spring seat is provided with the counterbore of ccontaining said pressure spring.
6. mechanical seal device according to claim 2 is characterized in that, said rotating ring is provided with the otch or the counterbore of corresponding said throw-out collar driving pin towards the end face of throw-out collar, and driving pin embeds the back and drives rotating ring and rotate with rotating shaft.
7. mechanical seal device according to claim 1 is characterized in that, the thickness of said carbide alloy of nickel-base layer is the 0.4-07 millimeter.
8. mechanical seal device according to claim 1 is characterized in that, between said throw-out collar and the rotating ring, the corresponding position of seal ring of moving ring is provided with and pushes away pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203442227U CN202251980U (en) | 2011-09-09 | 2011-09-09 | Mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203442227U CN202251980U (en) | 2011-09-09 | 2011-09-09 | Mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251980U true CN202251980U (en) | 2012-05-30 |
Family
ID=46113223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203442227U Expired - Fee Related CN202251980U (en) | 2011-09-09 | 2011-09-09 | Mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251980U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2522987A (en) * | 2013-12-11 | 2015-08-12 | Aes Eng Ltd | Mechanical seal |
| CN105317732A (en) * | 2015-10-19 | 2016-02-10 | 陕西科技大学 | Sealing device of ammonia feeding device |
| CN105422860A (en) * | 2014-09-19 | 2016-03-23 | 天津市富鑫达密封有限公司 | Novel mechanical sealing device with two radial end faces for kettle |
| CN106402396A (en) * | 2016-10-25 | 2017-02-15 | 浙江大学 | High-temperature mechanical sealing structure |
| CN107956878A (en) * | 2017-12-28 | 2018-04-24 | 温州市天成密封件制造有限公司 | Periphery wave V-shaped ring mechanical seal |
| CN112623650A (en) * | 2020-12-18 | 2021-04-09 | 武汉宇格电力设备有限公司 | Screw conveyer |
| CN115264074A (en) * | 2022-09-28 | 2022-11-01 | 中密控股股份有限公司 | Combined sealing ring applied to large-scale extrusion granulator |
-
2011
- 2011-09-09 CN CN2011203442227U patent/CN202251980U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2522987A (en) * | 2013-12-11 | 2015-08-12 | Aes Eng Ltd | Mechanical seal |
| CN105422860A (en) * | 2014-09-19 | 2016-03-23 | 天津市富鑫达密封有限公司 | Novel mechanical sealing device with two radial end faces for kettle |
| CN105317732A (en) * | 2015-10-19 | 2016-02-10 | 陕西科技大学 | Sealing device of ammonia feeding device |
| CN106402396A (en) * | 2016-10-25 | 2017-02-15 | 浙江大学 | High-temperature mechanical sealing structure |
| CN106402396B (en) * | 2016-10-25 | 2018-02-06 | 浙江大学 | High temperature mechanical sealing structure |
| CN107956878A (en) * | 2017-12-28 | 2018-04-24 | 温州市天成密封件制造有限公司 | Periphery wave V-shaped ring mechanical seal |
| CN107956878B (en) * | 2017-12-28 | 2024-02-02 | 温州市天成密封件制造有限公司 | Peripheral wave-shaped sealing ring mechanical seal |
| CN112623650A (en) * | 2020-12-18 | 2021-04-09 | 武汉宇格电力设备有限公司 | Screw conveyer |
| CN112623650B (en) * | 2020-12-18 | 2022-04-29 | 武汉宇格电力设备有限公司 | Screw conveyer |
| CN115264074A (en) * | 2022-09-28 | 2022-11-01 | 中密控股股份有限公司 | Combined sealing ring applied to large-scale extrusion granulator |
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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: 20120530 Termination date: 20160909 |