CN200958603Y - Assembled mechanical sealer - Google Patents
Assembled mechanical sealer Download PDFInfo
- Publication number
- CN200958603Y CN200958603Y CN 200620063654 CN200620063654U CN200958603Y CN 200958603 Y CN200958603 Y CN 200958603Y CN 200620063654 CN200620063654 CN 200620063654 CN 200620063654 U CN200620063654 U CN 200620063654U CN 200958603 Y CN200958603 Y CN 200958603Y
- Authority
- CN
- China
- Prior art keywords
- ring
- face
- stationary ring
- friction pair
- rotating shaft
- 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
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Abstract
This utility model provides a combined type mechanical sealing device, consisting of a rotary ring, a stationary ring, a stacking ring and a sealing tank; the sealing tank includes an end plate and an inner and outer sleeve at both sides, the end plate is fixed in the inner side of shell and connected with a rotating shaft; the outer sleeve is connected with shell, and the inner sleeve is connected with a cover on the rotating shaft through threaded connection; the stacking ring is connected between the inner sleeve and the rotating shaft, both sides are connected with the end plate and the cover; the internal circular surface of the rotary ring is connected with the rotating shaft, the external circular surface of outer shoulder of the rotary ring is connected with the internal circular surface of outer sleeve; the outer end surface of rotary ring is equipped with a gland nut, the inner end surface of rotary ring is connected with a rotating shaft ladder end surface, and the inner end inner circular surface of rotary ring is equipped with an O-type ring; the stationary ring is connected between the inner circular surface of outer sleeve and the outer circular surface of rotary ring, the inner end surface of outer sleeve is equipped with a guide pin and connected with the stationary ring, and the outer circular surface of stationary ring is equipped with the O-type ring; the ring groove of inner end surface of rotary ring and outer end surface of stationary ring is equipped with a friction pair of dynamic and stationary ring. The structure of this device is simple, the size is small, the reliability is high, the cost is low and the application range is wide.
Description
Technical field
The utility model relates to the mechanical sealing technology of equipment running shaft, specifically is meant a kind of combined mechanical sealing device.
Background technique
At present, the physical dimension of existing traditional mechanical sealing is bigger, and complex structure uses, the maintenance requirement condition is higher, and reliability is lower, costs an arm and a leg, can't be under the mixed transportation of oil and gas operating mode proper functioning.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of simple in structure, size is little, functional reliability is high, cost is low, applicable to the combined mechanical sealing device of oil and gas multiphase flow operating mode.
The purpose of this utility model is achieved through the following technical solutions: this combined mechanical sealing device, comprise rotating ring, stationary ring, folded ring, gas-tight silo, gas-tight silo comprises the inner and outer sleeves of end plate and both sides thereof, end plate be fixed on housing inboard and with the rotating shaft socket, outer sleeve and housing socket, inner sleeve periphery are threaded and are socketed in gland in the rotating shaft; Folded ring set is connected between inner sleeve and the rotating shaft, and its both sides are close to end plate and gland respectively; Rotating ring inner peripheral surface and rotating shaft are fixedly sleeved, the rotating ring outer end is provided with shoulder, the inner peripheral surface socket of shoulder outer circumferential face and outer sleeve, and the rotating ring exterior edge face is provided with gland nut, the step end face of rotating ring interior edge face and rotating shaft is close to, and the inner inner peripheral surface of rotating ring is embedded with O shape circle and amplexiforms with rotating shaft sealing; Stationary ring is actively socketed between the outer circumferential face of the inner peripheral surface of outer sleeve and rotating ring, and the outer sleeve interior edge face is provided with locating stud and stationary ring interlocking, and the stationary ring outer circumferential face is embedded with O shape circle and amplexiforms with the sealing of outer sleeve inner peripheral surface; Be embedded with rotating ring, the stationary ring friction pair that amplexiforms mutually in rotating ring interior edge face, both annular grooves of stationary ring exterior edge face respectively.
Must realize the utility model for better, the end plate of described gas-tight silo is provided with coolant duct, and its both ends open is respectively corresponding to the exterior edge face of stationary ring, the coolant duct outlet of housing.
Be provided with the less flexible integral ring-shaped spring of rigidity between described stationary ring exterior edge face and the outer sleeve interior edge face, described spring plays the pretension effect to stationary ring.
Have a plurality of lubrication grooves on described rotating ring, the stationary ring friction pair end face, described each lubrication groove evenly distributes along the circle both sides, middle footpath of friction pair end face, and each lubrication groove rear end starts from the cylindrical or the interior circle of friction pair end face, front end tilts to point to the middle footpath circle of friction pair end face but is no more than middle footpath circle, each lubrication groove rear end groove depth front end is shallow, and the angle of groove bottom and friction pair end face is an acute angle; The front end of each lubrication groove of described any friction pair end face points to consistent with pairing friction pair direction of relative movement.
Sealing principle of the present utility model is: gas-tight silo of the present utility model is divided into interior storehouse (inner sleeve), outer storehouse (outer sleeve), and interior storehouse is a self-tightening type mechanical sealing, and outer storehouse is provided with according to rated working pressure for folded ring sealing, outer storehouse folded ring number; In normal operation, whole seal operation are born in the folded ring sealing in outer storehouse, and the self-tightening type mechanical sealing in interior storehouse is load not, does not therefore also need cooling liquid; Work in the machine superpressure, under the situation of perhaps folded ring seal break-off, working medium enters Nei Cang, working medium pressure promotes stationary ring and presses to rotating ring, the coolant system that starts the machine simultaneously provides cooling liquid, self-tightening type mechanical sealing work, the self-tightening type mechanical sealing in storehouse played a part step-down in the folded ring in outer storehouse was sealed at this moment.The working principle of self-tightening type mechanical sealing is in the outer sleeve:
(1) behind machine startup, working medium pressure P promotes stationary ring and presses to rotating ring, make friction pair contact quiet, rotating ring, friction pair and stationary ring O shape circle are isolated the high pressure and the normal pressure position of machine, under the situation of rotating shaft rotation, the lubrication groove of friction pair end face forms high-pressure membrane with circle position, footpath in the medium guiding friction pair on the inside and outside round both sides of friction pair, reaches the purpose of sealing;
(2) outer sleeve is interior without any the member to the rigid constraint of stationary ring, stationary ring floats between outer sleeve inner peripheral surface and rotating ring outer circumferential face, along with the height fluctuation of working medium pressure P or beating, tilting of rotating shaft, stationary ring is regulated automatically, and the stationary ring friction pair is adjacent to the rotating ring friction pair all the time;
(3) machine down, working medium pressure P disappears, and under the acting in conjunction of stationary ring O shape circle and stationary ring spring, this self-tightening type mechanical sealing device still keeps sealing.In fact, this moment, stationary ring O shape circle was compacted, did not have manpower not restore to the original state, thereby stationary ring was pressed on the rotating ring, and under the not high situation of seal request, even cancellation stationary ring spring, this self-tightening type mechanical sealing device still can proper functioning.
The utility model compared with prior art has following advantage and beneficial effect:
(1) change the structure of traditional mechanical sealing, the effect of reduction even cancellation spring utilizes the effect of working medium and working pressure thereof to reach the effect of sealing, simplify the structure, improve functional reliability, reduced cost, guaranteed the proper functioning under the oil and gas multiphase flow operating mode.
(2) can be used for the operating mode of the multiple liquid medium of big pressure, big flow, big range of viscosities, is a kind of simple, applied widely, and the seal element practical, that effect is good all can use in the conventional equipment of machinery, chemical industry.
Description of drawings
Fig. 1 is the structural representation of a kind of combined mechanical sealing device of the utility model;
Fig. 2 is the structural representation of friction pair shown in Figure 1;
Fig. 3 be lubrication groove A shown in Figure 2 to structural representation.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.
Embodiment one
As shown in Figure 1, this combined mechanical sealing device, comprise rotating ring 4, stationary ring 3, folded ring 12, gas-tight silo 2, gas-tight silo 2 comprises inner and outer sleeves 2-2, the 2-3 of end plate 2-1 and both sides thereof, end plate 2-1 be fixed on housing 1 inboard and with rotating shaft 10 sockets, outer sleeve 2-3 and housing 1 socket, inner sleeve 2-2 periphery are threaded and are socketed in gland 13 in the rotating shaft 10; Folded ring 12 is socketed between inner sleeve 2-2 and the rotating shaft 10, and its both sides are close to end plate 2-1 and gland 13 respectively; Rotating ring 4 inner peripheral surfaces and rotating shaft 10 are fixedly sleeved, rotating ring 4 outer ends are provided with shoulder 4-1, the inner peripheral surface socket of shoulder 4-1 outer circumferential face and outer sleeve 2-3, rotating ring 4 exterior edge faces are provided with gland nut 5, the step end face of rotating ring 4 interior edge faces and rotating shaft 10 is close to, and rotating ring 4 inner inner peripheral surfaces are embedded with O shape circle 11 and amplexiform with rotating shaft 10 sealings; Stationary ring 3 is actively socketed between the outer circumferential face of the inner peripheral surface of outer sleeve 2-3 and rotating ring 4, and outer sleeve 2-3 interior edge face is provided with locating stud 2-4 and stationary ring 3 interlockings, and stationary ring 3 outer circumferential faces are embedded with O shape circle 8 and amplexiform with the sealing of outer sleeve 2-3 inner peripheral surface; Be embedded with rotating ring, the stationary ring friction pair 6,7 that amplexiforms mutually in rotating ring 4 interior edge faces, stationary ring 3 exterior edge faces both annular groove 4-2, the 3-1 respectively.Be provided with spring 9 between stationary ring 3 exterior edge faces and the outer sleeve 2-3 interior edge face, it is the less flexible integral ring-shaped spring of rigidity, and 9 pairs of stationary rings 3 of spring play the pretension effect.
The end plate 2-1 of gas-tight silo is provided with coolant duct 2-5, and its both ends open is respectively corresponding to the exterior edge face of stationary ring 3, the coolant duct 1-1 outlet of housing 1.
As shown in Figure 2, have a plurality of lubrication grooves 14 on rotating ring, stationary ring friction pair 6,7 end faces, each lubrication groove 14 evenly distributes along circle 15 both sides, middle footpath of friction pair (6 or 7) end face, and each lubrication groove 14 rear ends start from the cylindrical or the interior circle of friction pair (6 or 7) end face, front end tilts to point to the middle footpath circle 15 of friction pair (6 or 7) end face but is no more than middle footpath circle 15, as shown in Figure 3, each lubrication groove 14 rear end groove depth front ends are shallow, and the angle of groove bottom and friction pair (6 or 7) end face is an acute angle; Shown in Fig. 2,3, the front end of each lubrication groove 14 of any friction pair (6 or 7) end face points to consistent with pairing friction pair (7 or 6) direction of relative movement.
This combined mechanical sealing device is work like this: gas-tight silo of the present utility model is divided into interior storehouse (inner sleeve 2-2), outer storehouse (outer sleeve 2-3), interior storehouse is a self-tightening type mechanical sealing, outer storehouse is folded ring sealing, the folded ring 12 in outer storehouse () number is provided with according to rated working pressure; In normal operation, whole seal operation are born in the folded ring sealing in outer storehouse, and the self-tightening type mechanical sealing in interior storehouse is load not, does not therefore also need cooling liquid; Work in the machine superpressure, under the situation of perhaps folded ring seal break-off, working medium enters Nei Cang, working medium pressure P promotes stationary ring 3 and presses to rotating ring 4, the coolant system that starts the machine simultaneously provides cooling liquid, self-tightening type mechanical sealing work, the self-tightening type mechanical sealing in storehouse played a part step-down in the folded ring in outer storehouse was sealed at this moment.Self-tightening type mechanical sealing is work like this in the outer sleeve:
(1) behind machine startup, working medium pressure P promotes stationary ring 3 and presses to rotating ring 4, make friction pair 6,7 contacts of dynamic and static ring, friction pair 6,7 and stationary ring O shape circle 8 are isolated the high pressure and the normal pressure position of machine, under the situation of rotating shaft 10 rotations, the lubrication groove 14 of friction pair 6,7 end faces forms high-pressure membrane with circle 15 positions, footpath in the medium guiding friction pair 6,7 on friction pair 6,7 inside and outside round both sides, reaches the purpose of sealing;
(2) outer sleeve 2-3 is interior without any the member to stationary ring 3 rigid constraints, stationary ring 3 floats between outer sleeve 2-3 inner peripheral surface and rotating ring 4 outer circumferential faces, along with the height fluctuation of working medium pressure P or beating, tilting of rotating shaft 10, stationary ring 3 is regulated automatically, and stationary ring friction pair 7 is adjacent to rotating ring friction pair 6 all the time;
(3) machine down, working medium pressure P disappears, and under the acting in conjunction of stationary ring O shape circle 8 and stationary ring spring 9, this self-tightening type mechanical sealing device still keeps sealing.In fact, this moment, stationary ring O shape circle 8 was compacted, did not have manpower not restore to the original state, thereby stationary ring 3 was pressed on the rotating ring 4, and under the not high situation of seal request, even cancellation stationary ring spring 9, this self-tightening type mechanical sealing device still can proper functioning.
As mentioned above, just can realize the utility model preferably.
Claims (4)
1, a kind of combined mechanical sealing device, it is characterized in that: comprise rotating ring, stationary ring, folded ring, gas-tight silo, gas-tight silo comprises the inner and outer sleeves of end plate and both sides thereof, end plate be fixed on housing inboard and with the rotating shaft socket, outer sleeve and housing socket, inner sleeve periphery are threaded and are socketed in gland in the rotating shaft; Between the inner sleeve and rotating shaft that folded ring set is connected on, its both sides are close to end plate and gland respectively; Rotating ring inner peripheral surface and rotating shaft are fixedly sleeved, the rotating ring outer end is provided with shoulder, the inner peripheral surface socket of shoulder outer circumferential face and outer sleeve, and the rotating ring exterior edge face is provided with gland nut, the step end face of rotating ring interior edge face and rotating shaft is close to, and the inner inner peripheral surface of rotating ring is embedded with O shape circle and amplexiforms with rotating shaft sealing; Stationary ring is actively socketed between the outer circumferential face of the inner peripheral surface of outer sleeve and rotating ring, and the outer sleeve interior edge face is provided with locating stud and stationary ring interlocking, and the stationary ring outer circumferential face is embedded with O shape circle and amplexiforms with the sealing of outer sleeve inner peripheral surface; Be embedded with rotating ring, the stationary ring friction pair that amplexiforms mutually in rotating ring interior edge face, both annular grooves of stationary ring exterior edge face respectively.
2, by the described a kind of combined mechanical sealing device of claim 1, it is characterized in that: the end plate of described gas-tight silo is provided with coolant duct, and its both ends open is respectively corresponding to the exterior edge face of stationary ring, the coolant duct outlet of housing.
3, by the described a kind of combined mechanical sealing device of claim 1, it is characterized in that: be provided with flexible integral ring-shaped spring between described stationary ring exterior edge face and the outer sleeve interior edge face.
4, by the described a kind of combined mechanical sealing device of claim 1, it is characterized in that: have a plurality of lubrication grooves on described rotating ring, the stationary ring friction pair end face, described each lubrication groove evenly distributes along the circle both sides, middle footpath of friction pair end face, and each lubrication groove rear end starts from the cylindrical or the interior circle of friction pair end face, front end tilts to point to the middle footpath circle of friction pair end face but is no more than middle footpath circle, each lubrication groove rear end groove depth front end is shallow, and the angle of groove bottom and friction pair end face is an acute angle; The front end of each lubrication groove of described any friction pair end face points to consistent with pairing friction pair direction of relative movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620063654 CN200958603Y (en) | 2006-08-31 | 2006-08-31 | Assembled mechanical sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620063654 CN200958603Y (en) | 2006-08-31 | 2006-08-31 | Assembled mechanical sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200958603Y true CN200958603Y (en) | 2007-10-10 |
Family
ID=38785485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620063654 Expired - Lifetime CN200958603Y (en) | 2006-08-31 | 2006-08-31 | Assembled mechanical sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200958603Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839345A (en) * | 2009-03-16 | 2010-09-22 | 昆山市釜用机械密封件厂 | Improved moving ring structure of mechanical sealing device for contact type air lubrication kettle |
| CN101994681A (en) * | 2009-08-21 | 2011-03-30 | 笹仓机械工程有限公司 | A shaft sealing structure of a steam compressor in a vacuum concentration device |
| CN102837252A (en) * | 2012-08-31 | 2012-12-26 | 常州市龙鑫化工机械有限公司 | Recycling bead mill with mechanical sealing and protection device |
| CN102878297A (en) * | 2012-09-27 | 2013-01-16 | 李勇 | Sealing device for rotary shaft of twin-screw feed desulfurization unit for scrap tire powder |
| CN106763792A (en) * | 2016-12-28 | 2017-05-31 | 合肥通用机械研究院 | A kind of self-cooling machine sealing arrangement suitable for dry friction operating mode |
-
2006
- 2006-08-31 CN CN 200620063654 patent/CN200958603Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839345A (en) * | 2009-03-16 | 2010-09-22 | 昆山市釜用机械密封件厂 | Improved moving ring structure of mechanical sealing device for contact type air lubrication kettle |
| CN101994681A (en) * | 2009-08-21 | 2011-03-30 | 笹仓机械工程有限公司 | A shaft sealing structure of a steam compressor in a vacuum concentration device |
| CN101994681B (en) * | 2009-08-21 | 2013-05-01 | 笹仓机械工程有限公司 | A shaft sealing structure of a steam compressor in a vacuum concentration device |
| CN102837252A (en) * | 2012-08-31 | 2012-12-26 | 常州市龙鑫化工机械有限公司 | Recycling bead mill with mechanical sealing and protection device |
| CN102878297A (en) * | 2012-09-27 | 2013-01-16 | 李勇 | Sealing device for rotary shaft of twin-screw feed desulfurization unit for scrap tire powder |
| CN106763792A (en) * | 2016-12-28 | 2017-05-31 | 合肥通用机械研究院 | A kind of self-cooling machine sealing arrangement suitable for dry friction operating mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20060831 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |