CN204477479U - Butterfly valve mechanical end face seal - Google Patents
Butterfly valve mechanical end face seal Download PDFInfo
- Publication number
- CN204477479U CN204477479U CN201520053462.XU CN201520053462U CN204477479U CN 204477479 U CN204477479 U CN 204477479U CN 201520053462 U CN201520053462 U CN 201520053462U CN 204477479 U CN204477479 U CN 204477479U
- Authority
- CN
- China
- Prior art keywords
- stuffing box
- box gland
- seal groove
- annular seal
- end cap
- 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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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of butterfly valve mechanical end face seal, comprise stuffing box gland and compress end cap, stuffing box gland is sheathed on valve shaft, compresses one end that end cap is located at stuffing box gland; The inwall of stuffing box gland is provided with the first annular seal groove, first annular seal groove is provided with the first annular seal ring and the first dry seal ring from the inside to the outside successively, the outer wall of stuffing box gland is provided with the second annular seal groove, be provided with the second dry seal ring in second annular seal groove, stuffing box gland is radially also provided with at least one dry hole being communicated with the first annular seal groove and the second annular seal groove; The end face that stuffing box gland and compression end cap contact is provided with press seal groove, is provided with press seal circle in press seal groove, compression end cap is also provided with the lip for compressing described press seal circle, compresses end cap and is fixedly connected with by a housing screw with between stuffing box gland.The utility model has good seal performance and can extend the advantage in butterfly valve working life.
Description
Technical field
The utility model relates to seal arrangement technical field, more particularly, and particularly a kind of butterfly valve mechanical end face seal.
Background technique
Butterfly valve needs to ensure the sealing between valve shaft and valve body in the course of the work.In prior art, general teflon and the v-ring of adopting seals.Because seal ring is connected directly between valve shaft and valve body, the loss of seal ring is large in the course of the work, easily occurs in use for some time losing efficacy, directly affects the normal use of butterfly valve.Therefore, the seal arrangement designing a kind of new structure is necessary.
Model utility content
The purpose of this utility model is to provide a kind of good seal performance and can extends the butterfly valve mechanical end face seal in butterfly valve working life.
In order to solve problem set forth above, the technical solution adopted in the utility model is: a kind of butterfly valve mechanical end face seal, for sealing the valve shaft of butterfly valve, described seal arrangement comprises stuffing box gland and compresses end cap, described stuffing box gland is sheathed on valve shaft, and described compression end cap is located at one end of stuffing box gland; The inwall of described stuffing box gland is provided with the first annular seal groove, described first annular seal groove is provided with the first annular seal ring and the first dry seal ring from the inside to the outside successively, the outer wall of described stuffing box gland is provided with the second annular seal groove, be provided with the second dry seal ring in described second annular seal groove, described stuffing box gland is radially also provided with at least one dry hole being communicated with the first annular seal groove and the second annular seal groove; The end face that described stuffing box gland and compression end cap contact is provided with press seal groove, press seal circle is provided with in described press seal groove, described compression end cap is also provided with the lip for compressing described press seal circle, described compression end cap is fixedly connected with by a housing screw with between stuffing box gland.
According to a preferred embodiment of the present utility model: the shutoff bolt that described second dry seal ring is arranged by multiple radial direction is fixed in the second annular seal groove.
Compared with prior art, the beneficial effects of the utility model are: the utility model is sealed by the first annular seal ring on the one hand, and by the first dry seal ring, the oil that part is revealed is absorbed, when using for a long time, carry out redrying by dry hole and the second dry seal ring again, avoid the sealability damaging the first annular seal ring because the first dry seal ring is too moist.Meanwhile, the setting by compressing end cap and press seal circle adds the axial seal performance of valve shaft.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of butterfly valve mechanical end face seal of the present utility model.
Description of reference numerals: 1, valve shaft, 2, stuffing box gland, 3, compress end cap, 4, housing screw, 5, the first annular seal groove, the 6, first annular seal ring, the 7, first dry seal ring, 8, dry hole, 9, the second annular seal groove, 10, shutoff bolt, the 11, second dry seal ring, 12, press seal circle, 13, press seal groove.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Consult shown in Fig. 1, the utility model provides a kind of butterfly valve mechanical end face seal, and for sealing the valve shaft 1 of butterfly valve, described seal arrangement comprises stuffing box gland 2 and compresses end cap 3.
Described stuffing box gland 2 is sheathed on valve shaft 1, and described compression end cap 3 is located at one end of stuffing box gland 2.
The inwall of described stuffing box gland 2 is provided with the first annular seal groove 5, and described first annular seal groove 5 is provided with the first annular seal ring 6 and the first dry seal ring 7 from the inside to the outside successively.
The outer wall of described stuffing box gland 2 is provided with the second annular seal groove 9, be provided with the second dry seal ring 11 in described second annular seal groove 9, described stuffing box gland 2 is radially also provided with at least one dry hole 8 being communicated with the first annular seal groove 5 and the second annular seal groove 9.
The end face that described stuffing box gland 2 and compression end cap 3 contact is provided with press seal groove 13, press seal circle 12 is provided with in described press seal groove 13, described compression end cap 3 is also provided with the lip for compressing described press seal circle 12, described compression end cap 3 is fixedly connected with by a housing screw 4 with between stuffing box gland 2.
The shutoff bolt 10 that described second dry seal ring 11 is arranged by multiple radial direction is fixed in the second annular seal groove 9.
The utility model in use, first axial seal is carried out by the first annular seal ring 6 pairs of valve shafts 1, a small amount of leakage is there will be unavoidably owing to making the first annular seal ring 6 for a long time, and now by the first dry seal ring 7, the oil that part is revealed is absorbed, after a procedure, carry out redrying by dry hole 8 and the second dry seal ring 11 again, avoid the sealability damaging the first annular seal ring 6 because the first dry seal ring 7 is too moist; Also can taking out the second dry seal ring 11, carrying out drying by arranging moisture absorption drying equipment in the second annular seal groove 9.Meanwhile, form second axial seal by compression end cap 3 and arranging of press seal circle 12, add the axial seal performance of valve shaft 1.
Above-described embodiment is the utility model preferably mode of execution; but mode of execution of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (2)
1. a butterfly valve mechanical end face seal, for sealing the valve shaft of butterfly valve, is characterized in that: described seal arrangement comprises stuffing box gland and compresses end cap, and described stuffing box gland is sheathed on valve shaft, and described compression end cap is located at one end of stuffing box gland; The inwall of described stuffing box gland is provided with the first annular seal groove, described first annular seal groove is provided with the first annular seal ring and the first dry seal ring from the inside to the outside successively, the outer wall of described stuffing box gland is provided with the second annular seal groove, be provided with the second dry seal ring in described second annular seal groove, described stuffing box gland is radially also provided with at least one dry hole being communicated with the first annular seal groove and the second annular seal groove; The end face that described stuffing box gland and compression end cap contact is provided with press seal groove, press seal circle is provided with in described press seal groove, described compression end cap is also provided with the lip for compressing described press seal circle, described compression end cap is fixedly connected with by a housing screw with between stuffing box gland.
2. butterfly valve mechanical end face seal according to claim 1, is characterized in that: the shutoff bolt that described second dry seal ring is arranged by multiple radial direction is fixed in the second annular seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520053462.XU CN204477479U (en) | 2015-01-26 | 2015-01-26 | Butterfly valve mechanical end face seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520053462.XU CN204477479U (en) | 2015-01-26 | 2015-01-26 | Butterfly valve mechanical end face seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204477479U true CN204477479U (en) | 2015-07-15 |
Family
ID=53633270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520053462.XU Expired - Fee Related CN204477479U (en) | 2015-01-26 | 2015-01-26 | Butterfly valve mechanical end face seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204477479U (en) |
-
2015
- 2015-01-26 CN CN201520053462.XU patent/CN204477479U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150715 Termination date: 20180126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |