CN103994222B - Shaft seal - Google Patents
Shaft seal Download PDFInfo
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- CN103994222B CN103994222B CN201310051996.4A CN201310051996A CN103994222B CN 103994222 B CN103994222 B CN 103994222B CN 201310051996 A CN201310051996 A CN 201310051996A CN 103994222 B CN103994222 B CN 103994222B
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- shaft
- ring
- axle sleeve
- end cap
- sealing
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Abstract
A kind of shaft seal, comprises a capping unit being arranged on a rotating machinery, a shaft sleeve unit, and a sealing unit. Capping unit comprises a sealing cover being arranged on rotating machinery and has an accommodating space. Sealing unit comprises the outer gland sealing mechanism of a transmission rig and being arranged at this axle sleeve between sealing cover and transmission rig. Shaft sleeve unit comprises an axle sleeve being placed through in capping unit, and axle sleeve has an end cap portions placing the cannula portion, of capping unit and being placed on cannula portion periphery, and one by cannula portion inner peripheral surface radial direction place in conjunction with cannula portion and end cap portions in conjunction with part. Utilize the design of the axle sleeve of separable cannula portion and end cap portions, not only dismounting maintenance is convenient, and the material manufacture of unlike material can be adopted respectively according to the character of process fluid, maintenance cost and production cost can be reduced, fitted shaft auxiliary seal ring and first and second axle sleeve auxiliary seal ring, can avoid being corroded because of contact spacer pad or processing procedure liquid in conjunction with part, and then improve whole service life.
Description
Technical field
The present invention relates to a kind of tightness system on rotating machinery, refer to a shaft seal especially.
Background technology
Shaft seal is a kind of cavity and rotation axle gap location of being installed on rotation mechanical means, for the equipment avoiding the fluid rotated in mechanical means or gas to ooze out by gap location.
Consulting Fig. 1, the special shaft seal 1 of existing stirrer is arranged on a stirrer 100, and the rotating shaft 101 for this stirrer 100 wears. The special shaft seal 1 of this stirrer comprises the shaft sleeve unit 12 that a capping unit 11, being arranged on this stirrer 100 places this capping unit 11, and one is arranged in this shaft sleeve unit 12 and is arranged in the sealing unit 13 of this capping unit 11.
This capping unit 11 comprises blue 111, one ring seat 112, being arranged on this lattice orchid lid 111 of covering of the lattice being arranged on this stirrer 100 and is arranged at this ring seat 112 in contrast to the sealing cover 113 on the blue side covering 111 of these lattice, and the accommodating space 114 that is matched by the blue lid 111 of these lattice, ring seat 112 define with sealing lid 113.
This shaft sleeve unit 12 comprises one and stretches through sealing lid 113 and the axle sleeve 121 that placed by this rotating shaft 101, and the Simmer ring 122 that is positioned between this axle sleeve 121 and this rotating shaft 101, this axle sleeve 121 has an inner face 123 towards this stirrer 100, and the outer face 124 that is contrary with this inner face 123.
Sealing unit 13 comprises one and is arranged at this axle sleeve 121 periphery and is arranged in the location seat 131 in this accommodating space 114, and is arranged at this lattice orchid lid 111 and sealing mechanism 132 and an outer gland sealing mechanism 135 on sealing lid 113 respectively. Wherein, this interior sealing mechanism 132 has an internal fixtion ring 133 being arranged on this lattice orchid lid 111, and one pushes against the interior swivel becket 134 on this internal fixtion ring 133; And this outer gland sealing mechanism 135 has an extenal fixation ring 136 being arranged on sealing lid 113, and one push against the outer swivel becket 137 on this extenal fixation ring 136.
Although utilizing said structure can effectively prevent the fluid (not shown) in stirrer 100 from leaking to improve leak preventing effect, but, if during fluid tool corrodibility in stirrer 100, the just inner face 123 of easily this interior sealing mechanism 132 of corrosion and this axle sleeve 121.
This interior sealing mechanism 132 can depending on corrodibility situation to change internal fixtion ring 133 with interior swivel becket 134 as solidity to corrosion non-metallic material (example: pottery) respectively, but, owing to this axle sleeve 121 is made of one piece, therefore, as long as the inner face 123 of this axle sleeve 121 is corroded or deforms to a certain degree just changing whole axle sleeve 121, and it is just replaceable after whole group of shaft seal 1 need to being disassembled, form the waste on maintenance cost and material undoubtedly, certainly, in order to this axle sleeve 121 of slowing down corrosion also can adopt the material of high corrosion resistance to make, but, if this axle sleeve 121 entirety is all with made by the material of high corrosion resistance, production cost will be caused to increase.
Summary of the invention
It is an object of the invention to provide a kind of shaft seal that can effectively reduce maintenance cost and production cost.
The shaft seal of the present invention is installed on a rotating machinery to place for a rotating shaft, and this shaft seal comprises the shaft sleeve unit that a capping unit being arranged on this rotating machinery, places this capping unit, and the sealing unit that is arranged in this shaft sleeve unit.
This capping unit comprises a sealing cover being arranged on this rotating machinery and has an accommodating space, this shaft sleeve unit comprises an axle sleeve being placed through in this capping unit and placed by this rotating shaft, and the axle auxiliary seal ring that is positioned between this axle sleeve and this rotating shaft, this axle sleeve has the cannula portion that places this capping unit, one can be placed on this cannula portion periphery and the end cap portions being placed in this accommodating space with separating, and one place by this cannula portion inner peripheral surface radial direction to lock establish in conjunction with this cannula portion and this end cap portions in conjunction with part, this axle auxiliary seal ring is arranged between end cap portions and rotating shaft.
Sealing unit comprises the transmission rig that is arranged at this end cap portions, and an outer gland sealing mechanism between sealing lid and this transmission rig, to seal the gap of sealing lid and this shaft room.
Shaft seal of the present invention, this shaft sleeve unit also comprises the 2nd axle sleeve auxiliary seal ring leaning on air side between a cannula portion between this axle sleeve and end cap portions.
Shaft seal of the present invention, this shaft sleeve unit also comprises several respectively between the cannula portion and end cap portions of this axle sleeve, and the first axle sleeve auxiliary seal ring between this cannula portion and rotating shaft.
Shaft seal of the present invention, this transmission rig has the location seat of the end cap portions that is arranged at this axle sleeve, and one towards sealing lid direction and be recessed to form the outer installation portion on this location seat, this outer gland sealing mechanism has an extenal fixation ring being arranged at sealing and covering, one pushes against the outer swivel becket on this extenal fixation ring, one is placed in this outer installation portion and pushes against the external compression ring on this outer swivel becket, several it is placed in this outer installation portion and the external compression spring of two ends this external compression ring of contact and this location seat respectively, and an attached outer auxiliary seal ring in this shaft sleeve unit and between this outer swivel becket and this end cap portions of cover.
Shaft seal of the present invention, this capping unit also comprises a Ge Langai being installed on this rotating machinery, the ring seat, the spacer pad entrance being connected this accommodating space and the external world respectively and the spacer pad outlet that are arranged at this lattice orchid and cover, and an interior sealing mechanism between this lattice orchid lid and this transmission rig, sealing lid is the side being positioned at this ring seat in contrast to this lattice orchid lid, and this lattice orchid lid, ring seat match with sealing lid and define this accommodating space.
Shaft seal of the present invention, this transmission rig also has one towards this rotating machinery direction and installation portion in being recessed to form on this location seat, this interior sealing mechanism has an internal fixtion ring being arranged at this lattice orchid and covering, one pushes against the interior swivel becket on this internal fixtion ring, one pushes against on this interior swivel becket and compresses ring, the interior compression spring of several two ends difference these interior compression rings of contact and this location seat, and an attached interior auxiliary seal ring in this shaft sleeve unit and between this interior swivel becket and this end cap portions of cover, this interior compression ring and described interior compression spring are the installation portions being arranged in this transmission rig.
Shaft seal of the present invention, the seat surface, location of this transmission rig is formed with a helical guide groove.
Shaft seal of the present invention, this capping unit also comprises a step cover being installed on sealing and covering, and the bearing that is arranged in this step cover, and the cannula portion of this axle sleeve stretches through out this step cover.
Shaft seal of the present invention, sealing lid and this ring seat are integrated.
Shaft seal of the present invention, this lattice orchid lid is integrated with this ring seat.
The useful effect of the present invention is: utilize separable cannula portion and the design of end cap portions, the material manufacture of unlike material can be adopted respectively according to the character of process fluid, effectively reduce maintenance cost and production cost, coordinate place by this cannula portion inner peripheral surface radial direction to lock establish in conjunction with this cannula portion and this end cap portions in conjunction with part and this axle auxiliary seal ring, this can be avoided to be corroded in conjunction with part.
Accompanying drawing explanation
Fig. 1 is a sectional view, and an existing shaft seal is described.
Fig. 2 is a sectional view, and the first of shaft seal of the present invention the better embodiment is described.
Fig. 3 is a sectional view, and the 2nd better embodiment of shaft seal of the present invention is described.
Fig. 4 is a sectional view, and the 3rd better embodiment of shaft seal of the present invention is described.
Fig. 5 is a sectional view, and the 4th better embodiment of shaft seal of the present invention is described.
Fig. 6 is a sectional view, and the 5th better embodiment of shaft seal of the present invention is described.
Fig. 7 is a sectional view, and the 6th better embodiment of shaft seal of the present invention is described.
Fig. 8 is a sectional view, and the 7th better embodiment of shaft seal of the present invention is described.
Fig. 9 is a sectional view, and the 8th better embodiment of shaft seal of the present invention is described.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail. It should be noted that in the following description content, similar assembly represents with identical numbering.
Consult Fig. 2, first better embodiment of shaft seal 2 of the present invention is installed on a rotating machinery 200 to place for a rotating shaft 201, this shaft seal 2 comprises the shaft sleeve unit 4 that a capping unit 3, being arranged on this rotating machinery 200 places this capping unit 3, and the sealing unit 5 that is arranged in this shaft sleeve unit 4. This capping unit 3 comprises the accommodating space 34 that a lattice orchid being installed on this rotating machinery 200 is covered 31, one ring seat 32, being arranged on this lattice orchid lid 31 and is arranged at this ring seat 32 and matched and define by the blue lid 31 of these lattice, ring seat 32 with sealing cover 33 in contrast to the sealing cover 33, on the side of this lattice orchid lid 31, and it is connected this accommodating space 34 and an extraneous spacer pad entrance 35 and spacer pad outlet 36 respectively, this spacer pad entrance 35 is formed in this ring seat 32, and this spacer pad outlet 36 is formed on sealing lid 33. In this better embodiment, this lattice orchid lid 31, ring seat 32 combine respectively with sealing lid 33, and in practical application, this lattice orchid lid 31 and this ring seat 32, or this ring seat 32 and the kenel that sealing lid 33 also can be integral type, still can reach identical effect.
This shaft sleeve unit 4 comprises an axle sleeve 41 being placed through in the sealing cover 33 of this capping unit 3 and being placed by this rotating shaft 201, the one axle auxiliary seal ring 42 being positioned between this axle sleeve 41 and this rotating shaft 201, and one be sheathed on this axle sleeve 41 in contrast to the driving ring 43 on the side of this rotating machinery 200, this axle sleeve 41 has the cannula portion 411 that places this capping unit 3, one is placed on this cannula portion 411 periphery and the end cap portions 412 being placed in this accommodating space 34, and one place by this cannula portion 411 inner peripheral surface radial direction to lock establish in conjunction with this cannula portion 411 and this end cap portions 412 in conjunction with part 413, this axle auxiliary seal ring 42 is positioned between this end cap portions 412 and this rotating shaft 201, this end cap portions 412 has a flange radially outward protruded out 414.In this better embodiment, this is a bolt in conjunction with part 413.
Sealing unit 5 comprises sealing mechanism 7 in the outer gland sealing mechanism 6 and being arranged at intervals in this accommodating space 34, and one be arranged in this end cap portions 412 and the transmission rig 8 being positioned between this outer gland sealing mechanism 6 and this sealing mechanism 7, this interior sealing mechanism 7 is between this lattice orchid lid 31 and this transmission rig 8.
This transmission rig 8 have one be arranged on the flange 414 of this end cap portions 412 and location seat 81, that surface is formed with a helical guide groove 811 towards sealing lid 33 direction and the outer installation portion 82 that is recessed to form on this location seat 81, and one towards this rotating machinery 200 direction and installation portion 83 in being recessed to form on this location seat 81.
This outer gland sealing mechanism 6 has the external compression spring 64 that outer swivel becket 62, pushes against the external compression ring 63 on this outer swivel becket 62, these external compression rings 63 of contact and this location seat 81 are distinguished in several two ends that an extenal fixation ring being arranged on sealing lid 33 61, pushes against on this extenal fixation ring 61, and a set of attached outer auxiliary seal ring 65 in the end cap portions 412 of this axle sleeve 41, and this outer auxiliary seal ring 65 is between this outer swivel becket 62 and this end cap portions 412, this external compression ring 63 is the outer installation portion 82 being arranged in this transmission rig 8 with described external compression spring 64.
This interior sealing mechanism 7 has the interior swivel becket 72, that an internal fixtion ring 71, being arranged on this lattice orchid lid 31 pushes against on this internal fixtion ring 71 and pushes against on this interior swivel becket 72 the interior compression spring 74 compressing ring 73, several two ends these interior compression rings 73 of contact and this location seat 81 respectively, and a set of attached interior auxiliary seal ring 75 in the end cap portions 412 of this axle sleeve 41, and this interior auxiliary seal ring 75 is between this interior swivel becket 72 and this end cap portions 412, this interior compression ring 73 is the installation portion 83 being arranged in this transmission rig 8 with described interior compression spring 74.
Utilize outer gland sealing mechanism 6 design with this interior sealing mechanism 7, can in this rotating machinery 200 of active balance with the pressure in this accommodating space 34, promote sealing property. And the inner position pin 85 (because visual angle relation only shows wherein), that this transmission rig 8 also has that several axles wear the outside fix pin 84 (because visual angle relation only shows wherein) in this outer swivel becket 62 and this outer installation portion 82, several axles wear this interior swivel becket 72 and this interior installation portion 83 is arranged to limit the outer buckle ring 86 of described outer swivel becket 62 in this outer installation portion 82, and one is arranged in this interior installation portion 83 to limit the internal buckle ring 87 of described interior swivel becket 72.
Utilizing above-mentioned design, the special shaft seal of stirrer of the present invention 2, except having better sealing property, has following advantage in practical application:
1. reduce costs: the cannula portion 411 utilizing this axle sleeve 41 separable and the design of end cap portions 412, when this end cap portions 412 is corroded by the fluid (not shown) in this rotating machinery 200, only need to change this end cap portions 412, cannula portion 411 without the need to not even being corroded is changed in the lump, therefore can effectively reduce maintenance cost and cut the waste; In addition, cannula portion 411 and the end cap portions 412 of this axle sleeve 41 can adopt unlike material to make respectively, the protection against corrosion metal that end cap portions 412 can adopt cost higher according to the character of process fluid, the cannula portion 411 that can not contact with process fluid then can select general applicable material manufacture, effectively to reduce material cost.
2. long service life: utilize this to place by cannula portion 411 inner peripheral surface radial direction in conjunction with part 413 and be locked on end cap portions 412 inner peripheral surface, with in conjunction with the design of this cannula portion 411 with end cap portions 412, arrange in pairs or groups this axle auxiliary seal ring 42, this not only can be avoided to contact with the fluid in rotating machinery 200 in conjunction with part 413, affect locking property and intensity with the erosion from fluid, more can significantly promote overall work-ing life.
3. convenient maintenance and replacement: continuous above-mentioned, owing to this is place in conjunction with this cannula portion 411 and this end cap portions 412 by this cannula portion 411 inner peripheral surface radial direction in conjunction with part 413, therefore, if when cannula portion 411 to be repaired or replaced operation, after this capping unit 3 is separated from each other with this rotating machinery 200, only need to dismantle this and just can carry out the maintenance of this cannula portion 411 with axle auxiliary seal ring 42 and replacing operation in conjunction with part 413, therefore, more convenient on maintain and replace.
Consult Fig. 3,2nd better embodiment of shaft seal 2 of the present invention, being roughly similar to this first better embodiment, not identical place is: this shaft sleeve unit 4 also comprises a 2nd axle sleeve auxiliary seal ring 45 between the cannula portion 411 and end cap portions 412 of this axle sleeve 41. 2nd axle sleeve auxiliary seal ring 45 is positioned at this in conjunction with part 413 and by air side place, the corrosive fluid impact that flour milling is oozed out by primary barrier by extenal fixation ring 61 and outer swivel becket 62, in conjunction with part 413, also can promote the sealing effect between this cannula portion 411 and end cap portions 412 simultaneously.
Consult Fig. 4, 3rd better embodiment of shaft seal 2 of the present invention, it is roughly similar to this first better embodiment, not identical place is: this shaft sleeve unit 4 also comprises two respectively between the cannula portion 411 and end cap portions 412 of this axle sleeve 41, and the first axle sleeve auxiliary seal ring 44 between this cannula portion 411 and this rotating shaft 201, this kenel is used for high pressure manufacturing process, when this axle auxiliary seal ring 42 unable to bears high pressure, the first axle sleeve auxiliary seal ring 44 between this cannula portion 411 and this rotating shaft 201 and between cannula portion 411 and end cap portions 412 can also do second protection, acrid processing procedure liquid is avoided to affect this in conjunction with part 413, can also promote between this cannula portion 411 and end cap portions 412 simultaneously, and the sealing effect between this cannula portion 411 and this rotating shaft 201.
Consult Fig. 5,4th better embodiment of shaft seal 2 of the present invention, it is roughly similar to the 3rd better embodiment, not identical place is: this capping unit 3 also comprises the bearing 38 that a step cover being mounted on sealing lid 33 37, is arranged in this step cover 37, and the cannula portion 411 of this axle sleeve 41 is this step cover 37 that stretches through out.
Owing to this better embodiment is roughly identical with the 3rd better embodiment, therefore except can reaching effect of the 3rd better embodiment, utilize this bearing 38 not only can give this axle sleeve 41 and rotating shaft more than 201 one point of suppon, make the rotation of this axle sleeve 41 can be more smooth-going, avoid the excessive radial of rotating shaft 201 partially to put and cause shaft seal 2 structure deteriorate, the special shaft seal of this stirrer 2 be can be applicable on vertical/sidepiece/inclination/bottom rotating machinery 200, increase the scope of application of this shaft seal 2.
And be combined location by this cannula portion 411 with a key 91 due to this bearing 38, if shaft seal 2 only need to be keeped in repair, do not need to dismantle the associated components of this bearing 38 grade by air side, only need to unload through step cover 37, sealing cover 33 and dative orchid lid 31 combination bolts 92 and this is in conjunction with part 413, sealing lid 33, step cover 37, cannula portion 411 and bearing 38 can integrally pull out, it is divided into shaft seal portion and bearing portion, maintenance is made more to have efficiency, and have a large amount of lubricating greases because of bearing 38 place, the design of one pull-out formula, lubricating grease pollutes the assembly in shaft seal 2 to avoid can not to need to dismantle bearing 38.
Consult Fig. 6,5th better embodiment of shaft seal 2 of the present invention, being roughly first identical compared with embodiment with this, not identical place is: sealing unit 5 comprises a transmission rig 8 being arranged on this flange 414, and an outer gland sealing mechanism 6 between sealing lid 33 and this transmission rig 8.
This better embodiment is except having the identical effect with this first better embodiment, also in the applicable single shaft envelope 2 in only having this outer gland sealing mechanism 6, that is, this present invention is applicable to the twin shaft seal structure such as Fig. 2 ~ 5, is also suitable for the single shaft seal structure of this better embodiment.
Consult Fig. 7,6th better embodiment of shaft seal 2 of the present invention, the place being roughly identical compared with embodiment with the 5th, not identical is: this shaft sleeve unit 4 also comprises a 2nd axle sleeve auxiliary seal ring 45 between the cannula portion 411 and end cap portions 412 of this axle sleeve 41. 2nd axle sleeve auxiliary seal ring 45 is positioned at this in conjunction with part 413 and by air side place, the corrosive fluid impact that flour milling is oozed out by primary barrier by extenal fixation ring 61 and outer swivel becket 62, in conjunction with part 413, also can promote the sealing effect between this cannula portion 411 and end cap portions 412 simultaneously.
Consult Fig. 8,7th better embodiment of shaft seal 2 of the present invention, it is roughly similar to the 5th better embodiment, not identical place is: this shaft sleeve unit 4 also comprises two respectively between the cannula portion 411 and end cap portions 412 of this axle sleeve 41, and the first axle sleeve auxiliary seal ring 44 between this cannula portion 411 and this rotating shaft 201. When this axle auxiliary seal ring 42 unable to bears high pressure, the first axle sleeve auxiliary seal ring 44 between this cannula portion 411 and rotating shaft 201 and between this cannula portion 411 and this end cap portions 412 can also do second protection, acrid processing procedure liquid is avoided to affect in conjunction with part 413, can also promote between this cannula portion 411 and end cap portions 412 simultaneously, and the sealing effect between this cannula portion 411 and this rotating shaft 201.
Consult Fig. 9, 8th better embodiment of shaft seal 2 of the present invention, it is roughly similar to the 6th better embodiment, not identical place is: this shaft sleeve unit 4 also comprises several the first axle sleeve auxiliary seal rings 44, first, 2nd axle sleeve auxiliary seal ring 44, 45 is between the cannula portion 411 and end cap portions 412 of this axle sleeve 41, and lay respectively at this two opposite sides in conjunction with part 413, another the first axle sleeve auxiliary seal ring 44 is between this cannula portion 411 and this rotating shaft 201, 2nd axle sleeve auxiliary seal ring 45 is positioned at this in conjunction with part 413 and by air side place, the corrosive fluid that flour milling is oozed out by primary barrier by extenal fixation ring 61 and outer swivel becket 62 affects in conjunction with part 413, also can promote the sealing effect between this cannula portion 411 and end cap portions 412 simultaneously, and when this axle auxiliary seal ring 42 unable to bears high pressure, described first axle sleeve auxiliary seal ring 44 between cannula portion 411 and rotating shaft and between cannula portion 411 and end cap portions 412 can also do second protection, acrid processing procedure liquid is avoided to affect in conjunction with part 413, to promote between this cannula portion 411 and end cap portions 412, and the sealing effect between this cannula portion 411 and this rotating shaft 201.
In sum, the design that shaft seal 2 of the present invention utilizes separable cannula portion 411 and end cap portions 412 and locks in conjunction with part 413, so that the cannula portion 411 of this axle sleeve 41 is keeped in repair facility from the dismounting of end cap portions 412 and can be adopted the material manufacture of different cost respectively, effectively reduce maintenance cost and production cost, and coordinate by this cannula portion 411 inner peripheral surface radial direction place the mode of locking in lock establish in conjunction with this cannula portion 411 and this end cap portions 412 in conjunction with part 413, arrange in pairs or groups this first axle sleeve auxiliary seal ring 44, the sealing of axle auxiliary seal ring 42 and the 2nd axle sleeve auxiliary seal ring 45, this is avoided to be corroded by process fluid in conjunction with part 413, and then improve overall work-ing life, so the object of the present invention really can be reached.
Claims (10)
1. a shaft seal, for being installed on a rotating shaft of a rotating machinery, this shaft seal comprises a capping unit being arranged on this rotating machinery, one places the shaft sleeve unit of this capping unit, and the sealing unit that is arranged in this shaft sleeve unit, this capping unit comprises a sealing cover being arranged on this rotating machinery and has an accommodating space, this shaft sleeve unit comprises an axle sleeve being placed through in this capping unit and placed by this rotating shaft, and the axle auxiliary seal ring that is positioned between this axle sleeve and this rotating shaft, sealing unit comprises the transmission rig that is arranged at this axle sleeve, and an outer gland sealing mechanism between sealing lid and this transmission rig, to seal the gap of sealing lid and this shaft room, it is characterized in that:
This axle sleeve have a cannula portion placing this capping unit, one can be placed on this cannula portion periphery with separating and the end cap portions being placed in this accommodating space, and one place by this cannula portion inner peripheral surface radial direction to lock establish in conjunction with this cannula portion and this end cap portions in conjunction with part, this axle auxiliary seal ring is arranged between end cap portions and rotating shaft, and this transmission rig is arranged at this end cap portions.
2. shaft seal according to claim 1, it is characterised in that: this shaft sleeve unit also comprises the 2nd axle sleeve auxiliary seal ring leaning on air side between a cannula portion between this axle sleeve and end cap portions.
3. shaft seal according to claim 1, it is characterised in that: this shaft sleeve unit also comprises several respectively between the cannula portion and end cap portions of this axle sleeve, and the first axle sleeve auxiliary seal ring between this cannula portion and rotating shaft.
4. shaft seal according to claim 1, it is characterized in that: this transmission rig has the location seat of the end cap portions that is arranged at this axle sleeve, and one towards sealing lid direction and be recessed to form the outer installation portion on this location seat, this outer gland sealing mechanism has an extenal fixation ring being arranged at sealing and covering, one pushes against the outer swivel becket on this extenal fixation ring, one is placed in this outer installation portion and pushes against the external compression ring on this outer swivel becket, several it is placed in this outer installation portion and the external compression spring of two ends this external compression ring of contact and this location seat respectively, and an attached outer auxiliary seal ring in this shaft sleeve unit and between this outer swivel becket and this end cap portions of cover.
5. shaft seal according to claim 1, it is characterized in that: this capping unit also comprises a Ge Langai being installed on this rotating machinery, the ring seat, the spacer pad entrance being connected this accommodating space and the external world respectively and the spacer pad outlet that are arranged at this lattice orchid and cover, and an interior sealing mechanism between this lattice orchid lid and this transmission rig, sealing lid is the side being positioned at this ring seat in contrast to this lattice orchid lid, and this lattice orchid lid, ring seat match with sealing lid and define this accommodating space.
6. shaft seal according to claim 5, it is characterized in that: this transmission rig also has the location seat of the end cap portions that is arranged at this axle sleeve, one towards this rotating machinery direction and installation portion in being recessed to form on this location seat, this interior sealing mechanism has an internal fixtion ring being arranged at this lattice orchid and covering, one pushes against the interior swivel becket on this internal fixtion ring, one pushes against on this interior swivel becket and compresses ring, the interior compression spring of several two ends difference these interior compression rings of contact and this location seat, and an attached interior auxiliary seal ring in this shaft sleeve unit and between this interior swivel becket and this end cap portions of cover, this interior compression ring and described interior compression spring are the installation portions being arranged in this transmission rig.
7. shaft seal according to claim 4, it is characterised in that: the seat surface, location of this transmission rig is formed with a helical guide groove.
8. shaft seal according to claim 2, it is characterised in that: this capping unit also comprises a step cover being installed on sealing and covering, and the bearing that is arranged in this step cover, and the cannula portion of this axle sleeve stretches through out this step cover.
9. shaft seal according to claim 5, it is characterised in that: sealing lid and this ring seat are integrated.
10. shaft seal according to claim 5, it is characterised in that: this lattice orchid lid is integrated with this ring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310051996.4A CN103994222B (en) | 2013-02-18 | 2013-02-18 | Shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310051996.4A CN103994222B (en) | 2013-02-18 | 2013-02-18 | Shaft seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103994222A CN103994222A (en) | 2014-08-20 |
| CN103994222B true CN103994222B (en) | 2016-06-08 |
Family
ID=51308479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310051996.4A Active CN103994222B (en) | 2013-02-18 | 2013-02-18 | Shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103994222B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW459938U (en) * | 2001-03-02 | 2001-10-11 | Scenic Precise Element Inc | Cassette type shaft sealing device used in a rotating machine |
| CN2470586Y (en) * | 2001-03-26 | 2002-01-09 | 祥景精机股份有限公司 | Shaft sealing device of rotary machinery |
| TWM298044U (en) * | 2006-04-11 | 2006-09-21 | Scenic Precise Element Inc | Shaft seal structure |
| US8033549B2 (en) * | 2006-04-25 | 2011-10-11 | Scenic Precise Element Inc. | Mechanical seal |
| CN102116320B (en) * | 2010-12-30 | 2012-07-04 | 上海阿波罗机械股份有限公司 | Spent fuel pool cooling pump for nuclear power station |
| CN102116309B (en) * | 2010-12-30 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Mechanical sealing device for centrifugal pump |
-
2013
- 2013-02-18 CN CN201310051996.4A patent/CN103994222B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW459938U (en) * | 2001-03-02 | 2001-10-11 | Scenic Precise Element Inc | Cassette type shaft sealing device used in a rotating machine |
| CN2470586Y (en) * | 2001-03-26 | 2002-01-09 | 祥景精机股份有限公司 | Shaft sealing device of rotary machinery |
| TWM298044U (en) * | 2006-04-11 | 2006-09-21 | Scenic Precise Element Inc | Shaft seal structure |
| US8033549B2 (en) * | 2006-04-25 | 2011-10-11 | Scenic Precise Element Inc. | Mechanical seal |
| CN102116320B (en) * | 2010-12-30 | 2012-07-04 | 上海阿波罗机械股份有限公司 | Spent fuel pool cooling pump for nuclear power station |
| CN102116309B (en) * | 2010-12-30 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Mechanical sealing device for centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103994222A (en) | 2014-08-20 |
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