CN2908927Y - Sealing assembly capable of radial regulating stuffing box - Google Patents
Sealing assembly capable of radial regulating stuffing box Download PDFInfo
- Publication number
- CN2908927Y CN2908927Y CN 200620090386 CN200620090386U CN2908927Y CN 2908927 Y CN2908927 Y CN 2908927Y CN 200620090386 CN200620090386 CN 200620090386 CN 200620090386 U CN200620090386 U CN 200620090386U CN 2908927 Y CN2908927 Y CN 2908927Y
- Authority
- CN
- China
- Prior art keywords
- stuffing box
- outer cover
- radially
- black box
- rotatingshaft
- 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
Links
Abstract
The utility model relates to a seal assembly that can adjust a gland box in radial direction. Housing of the seal assembly is also provided with a radial adjustment part to adjust distance between the gland box and an axis of rotation. The utility model can adjust distance between the gland box and the axis of rotation in radial direction without changing density of the gland box by using the adjustment part, and can improve sealability and service life.
Description
Technical field:
The utility model relates to a kind of black box that can radially adjust stuffing box, especially relates to a kind of by outer cover with and be arranged on the black box that stuffing box constituted in this outer cover.
Background technique:
The existing black box that is arranged on zone, rotatingshaft end generally includes an outer cover and is arranged on the stuffing box that is made of felt or similar articles in this outer cover, and is used for making its and rotatingshaft can closely contact the axial gland that seals to realize the stuffing box compacting.As seen, the black box of this kind structure is to utilize axial gland to force stuffing box closely to contact with rotatingshaft along the mode of axially stuffing box being exerted pressure of rotatingshaft, with prevent oil from the periphery of rotatingshaft to external leakage.Yet, because stuffing box is also to push stuffing box cause its density to increase in external diameter expansion being subjected to radially bigger pressure, the wettability power of stuffing box also correspondingly diminished when its density increased, so the problem that the mode that the axial adjustment of this kind stuffing box contacts with rotatingshaft at first reflects is that oil absorption is poor, thereby directly influences the effect of its sealing; Next is when the extruding stuffing box, only can be or feel to determine the degree that closely contacts between stuffing box and the rotatingshaft from experience, under normal conditions, generally believe the tight more good more of both combinations, and both are closely in conjunction with causing the density of stuffing box further to increase, and also accelerate its wearing and tearing, so the mode of this kind adjustment stuffing box also can directly influence its working life; In addition, because of the be squeezed scope of back expansion of stuffing box just is confined in the elastic limit of himself, so, after after stuffing box uses for the first time, wearing and tearing, rethinking by axial gland adjustment stuffing box has bigger difficulty, and this point also is to cause sealing assembly short main cause in working life.
" the wear-resisting shaft packing circle " of No. 2122978 bulletins of Chinese patent is exactly the structure that adopts an opening rubber ring and be contained in the wear-resisting ring set in this rubber ring, its meaning is to want to adjust radially shrinkage amplitude by the opening on the insertion ring, and then improves its sealing effect and solve short problem of life-span.But, because this kind insertion ring can only be its radial contraction amplitude of disposable adjustment, and need be by means of adjusting as outer cover or special-purpose parts, so this kind insertion ring can not fundamentally solve existing problem in the prior art.
And " a kind of seal arrangement " of No. 2654953, Chinese patent bulletin adopt is double sealing structure, comprises the end plate, Sealing, gland and the bearing support that are installed in successively on the running shaft.Its meaning is to want to utilize Sealing to compress into the existing first layer sealing of a cause for gossip of end plate, and realizes second layer sealing with the mode that gland compresses filler.Though adopt the structure of two-layer sealing to have relative better seal effect, because felt still adopts stationary structure, can not arbitrarily adjust, so this patented technology can not fundamentally solve problems of the prior art.
With regard to the sealing between the relative movement object, the for example sealing of rotatingshaft, because oil can form the very thin oil film of one deck on rotatingshaft, as long as the distance between stuffing box and the rotatingshaft is not more than the thickness of oil film, oil just can not leak out, like this, desirable sealing effect can be reached, the life-span of stuffing box can be prolonged simultaneously again.
Summary of the invention:
Task of the present utility model provides a kind of utilization and radially adjusts the mode of distance between stuffing box and the rotatingshaft and solve the working life of stuffing box and the black box of sealing effect problem.
The black box that can radially adjust stuffing box that the utility model proposed is being equipped with the radially adjustment component that is used to adjust distance between stuffing box and the rotatingshaft on the described outer cover.
Semicircular rigid disk is installed between the internal surface of described stuffing box and outer cover, semicircle rigid disk is provided with at least one and is used to the radial projection that prevents that stuffing box from rotating, and is separated with intended distance or adopts bayonet joint between between two semicircle rigid disks.
Described radially adjustment component is to be made of the adjustment bolt that is arranged at least one radial direction through hole on the outer cover and be screwed in the radial direction through hole.Described radial direction through hole radially is provided with four equally spacedly along outer cover, and each radial direction through hole all is equipped with an adjustment bolt.
On the outer surface of described outer cover gland is installed, described stuffing box comprises two the first ring felt and the second ring felts that axially paste mutually, and gland is provided with and can be inserted into the convex that being used in the felt prevents that felt from rotating.The opening part of the described first ring felt and along radially being provided with the spigot and socket type step, and the opening part of the second ring felt and along axially being provided with the spigot and socket type step.
The adjustment component that the black box that the utility model proposed adopts can radially be adjusted the distance between stuffing box and the rotatingshaft, do not change the density of stuffing box on the one hand, make it have bigger wettability power, can improve its sealing effect, distance between stuffing box and the rotatingshaft is adjusted arbitrarily, when particularly both being adjusted to the spacing of interval oil film, can prolong greatly its working life, even the limit portion of stuffing box weares and teares, also can both be adjusted to suitable spacing by adjustment component; The promptly convenient spacing of adjusting of added rigid disk between stuffing box and outer cover can prevent that again stuffing box from rotating simultaneously.
Description of drawings:
Accompanying drawing 1 is an embodiment's of the utility model a surface structure decomposing schematic representation.
Referring to Fig. 1, this figure provides the embodiment's of black box that can radially adjust stuffing box that the utility model proposes overall appearance structure.As can be seen from Figure 1, the sealing assembly mainly is made up of outer cover 1, adjustment component 2, stuffing box 3, rigid disk 4 and gland 5.
Wherein, what outer cover 1 present embodiment provided is a hollow and structure that have the cylinder of a sealing surface 11, is provided with the through hole 12 that allows rotatingshaft to pass in the central region of sealing surface 11.Stuffing box 3 is that an external diameter constitutes with identical or akin two the ring felts of the internal diameter shape of outer cover 1, the zone is provided with the hole 31 that allows rotatingshaft to pass in the middle, two ends at the first ring felt are respectively arranged with radially spigot and socket type step 32, being used to hinder the oil that axially oozes out flows out at 31 positions through the hole, and in two ends of the second ring felt along axially being provided with spigot and socket type step 34, the oil that is used to hinder radially outwards oozes out, step 32 and 34 the spacing that can radially adjust easily between itself and the rotatingshaft is set, can prevent also that simultaneously oil is from axially and radially oozing out.When in the early stage stuffing box 3 being installed, can leave the gap respectively between spigot and socket type step 32 and 34 the transverse section, and after the internal diameter 33 of stuffing box 3 weares and teares, can adjust to suitable position between the external diameter with the internal diameter 33 of stuffing box 3 and rotatingshaft by adjustment component 2 extruding rigid disks 4.Gland 5 is the parts that are used for closed cover 1 another face, is provided with the convex that can be inserted in the stuffing box 3 at the internal surface of gland 5, rotates when the work to prevent stuffing box 3 or felt.
Between the outer surface of the internal surface of outer cover 1 and stuffing box 3 two semicircle rigid disks 4 that dock are installed also, this rigid disk 4 mainly is the distance that is used for adjusting easily between stuffing box 3 and the rotatingshaft.In order to prevent that rigid disk 4 along with rotatingshaft rotates, is provided with a radial projection 41 at the middle part of each rigid disk 4.Can adopt bayonet joint or between to leave intended distance between two semicircle rigid disks 4.
Adjustment component 2 is the parts that are used for directly adjusting distance between stuffing box 3 and the rotatingshaft, and adjustment component 2 can adopt multiple structure, its objective is to be used for radially pushing tow rigid disk 4.What adopt in the present embodiment is by the radial direction through hole 21 and the structure that is screwed in the adjustment bolt 22 in the radial direction through hole 21 that are arranged on the outer cover 1.Radial direction through hole 21 radially is provided with four equally spacedly along outer cover 1, and each radial direction through hole 21 all is equipped with an adjustment bolt 22.When adjusting, can in turn promote rigid disk 4 and stuffing box 3 as long as screw adjustment bolt 22, with the purpose that realizes adjusting.
Claims (8)
1, a kind of black box that can radially adjust stuffing box, comprise permission rotatingshaft an outer cover that passes and a stuffing box that is arranged on this outer cover internal diameter periphery that is arranged on zone, rotatingshaft end, it is characterized in that: the radially adjustment component that is used to adjust distance between stuffing box and the rotatingshaft also is being installed on the described outer cover.
2, black box according to claim 1 is characterized in that: semicircular rigid disk is installed between the internal surface of described stuffing box and outer cover, and is separated with intended distance between between two semicircle rigid disks or adopts bayonet joint.
3, black box according to claim 1 is characterized in that: described radially adjustment component is to be made of the adjustment bolt that is arranged at least one radial direction through hole on the outer cover and be screwed in the radial direction through hole.
4, black box according to claim 2 is characterized in that: described semicircle rigid disk is provided with at least one radial projection that is used to prevent the stuffing box rotation.
5, black box according to claim 1 is characterized in that: on the outer surface of described outer cover gland is installed.
6, black box according to claim 3 is characterized in that: described radial direction through hole radially is provided with four equally spacedly along outer cover, and each radial direction through hole all is equipped with an adjustment bolt.
7, black box according to claim 1 or 5, it is characterized in that: described stuffing box comprises two the first ring felt and the second ring felts that axially paste mutually, and gland is provided with and can be inserted into the convex that being used in the felt prevents that felt from rotating.
8, black box according to claim 7 is characterized in that: the opening part of the described first ring felt and along radially being provided with the spigot and socket type step, and the opening part of the second ring felt and along axially being provided with the spigot and socket type step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090386 CN2908927Y (en) | 2006-04-14 | 2006-04-14 | Sealing assembly capable of radial regulating stuffing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090386 CN2908927Y (en) | 2006-04-14 | 2006-04-14 | Sealing assembly capable of radial regulating stuffing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2908927Y true CN2908927Y (en) | 2007-06-06 |
Family
ID=38128138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090386 Expired - Fee Related CN2908927Y (en) | 2006-04-14 | 2006-04-14 | Sealing assembly capable of radial regulating stuffing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2908927Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042078A (en) * | 2015-07-28 | 2015-11-11 | 南通艾迈特机械有限公司 | High-temperature-resistant and high-pressure-resistant shaft sealing device |
| WO2019037709A1 (en) * | 2017-08-21 | 2019-02-28 | 电化江玲久斗论株式会社 | Cable gland |
| CN109611615A (en) * | 2018-12-10 | 2019-04-12 | 中国航发四川燃气涡轮研究院 | A kind of adjustable sealing structure |
-
2006
- 2006-04-14 CN CN 200620090386 patent/CN2908927Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042078A (en) * | 2015-07-28 | 2015-11-11 | 南通艾迈特机械有限公司 | High-temperature-resistant and high-pressure-resistant shaft sealing device |
| WO2019037709A1 (en) * | 2017-08-21 | 2019-02-28 | 电化江玲久斗论株式会社 | Cable gland |
| CN109428295A (en) * | 2017-08-21 | 2019-03-05 | 电化江玲久斗论株式会社 | Cable stuffing-box |
| CN109428295B (en) * | 2017-08-21 | 2021-08-10 | 电化江玲久斗论株式会社 | Cable stuffing box |
| CN109611615A (en) * | 2018-12-10 | 2019-04-12 | 中国航发四川燃气涡轮研究院 | A kind of adjustable sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |