CN205090077U - Valve shaft seal cover - Google Patents
Valve shaft seal cover Download PDFInfo
- Publication number
- CN205090077U CN205090077U CN201520326145.0U CN201520326145U CN205090077U CN 205090077 U CN205090077 U CN 205090077U CN 201520326145 U CN201520326145 U CN 201520326145U CN 205090077 U CN205090077 U CN 205090077U
- Authority
- CN
- China
- Prior art keywords
- seal
- valve shaft
- main body
- stuffing box
- main part
- 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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- Sealing Devices (AREA)
Abstract
The utility model provides a valve shaft seal cover, including columniform main part (2) and ring type seal (1), main part (2) inside opening there are through -hole (3), the inboard of lateral wall of main part set up inboard seal groove (4) that hold sealing washer (1), the outside of lateral wall of main part set up outside seal groove (5) that hold sealing washer (1), the main part up end is provided with two above screw hole (6), round constant head tank (7) are located to be equipped with in through -hole (3) of main part lower extreme port, constant head tank (7) and disk seat in the mechanism cooperate, the shape of cross section of ring type seal (1) be four corners star, adjacent recessed for inwards between two jiaos. The beneficial effects of the utility model are that it is convenient to change, and long service life is sealed effectual.
Description
Technical field
The utility model relates to valve shaft field of sealing technology, especially relates to a kind of valve shaft stuffing box gland.
Background technique
Existing valve shaft is sealed into gland sealed form, is made up of Packing seat, Gland, O-ring seals, supporting frame, and Gland compresses multiple O-ring seals, reaches sealing effect.In such an embodiment, O-ring seals is in the state always compressed, and when sealed ring deformation amount is large, make valve resistance become large, the wearing and tearing aggravation of seal ring, causes the life-span low; When the amount of deformation hour of seal ring, the phenomenon that can cause again seal failure or namely lose efficacy after switch several times.And the parts involved by current seal form are a lot, and each parts are respectively integrated, very loaded down with trivial details trouble during replacing.
Therefore, a kind of replacing is badly in need of at present convenient, long service life, the valve shaft seal arrangement of good sealing effect.
Model utility content
It is convenient that the purpose of this utility model is to provide a kind of replacing, long service life, the valve shaft stuffing box gland of good sealing effect.
The technical solution of the utility model is: a kind of valve shaft stuffing box gland, comprise columniform main body and O-ring seal, body interior has through hole, the inner side of the sidewall of main body offers the inner seal groove holding O-ring seal, the outside of the sidewall of described main body offers the outer side seal groove holding O-ring seal, main body upper-end surface is provided with two or more tapped hole, and the through hole of main body lower end port is provided with a circle locating slot, and described locating slot matches with the mechanism in valve seat; The shape of cross section of O-ring seal is corner star, for inwardly concaving between adjacent two jiaos.
Further, the inner seal groove quantity of this valve shaft stuffing box gland is 2, and outer side seal groove quantity is 2.
Preferably, two outer side seal grooves of above-mentioned valve shaft stuffing box gland are crisscross arranged in the axial direction with two other inner seal groove.
Further, be recessed into as Symmetrical Circular Arc is recessed between adjacent two jiaos of O-ring seal of this valve shaft stuffing box gland.
Further, the corner of the O-ring seal of this valve shaft stuffing box gland is that arc surface and recessed portion are tangent.
Further, the number of degrees of the angle α between the foursquare arc face of the O-ring seal of this valve shaft stuffing box gland and recessed portion consecutive tangent are 90 °-120 °.
The advantage that the utility model has and good effect are: 1, the valve seal sleeve pipe of this technological scheme is structure as a whole, and when changing seal ring, only bolt need be turned on, entirety can be taken out, change seal ring, change convenient.2, this valve seal cover top is screwed by bolt and gland, and bottom is coordinated with the counter structure in valve seat by locating slot, makes valve shaft sealing effect better.3, the shape of cross section of O-ring seal is corner star, due to the reentrant part of the pressure meeting crush seal circle of valve in-vivo medium, thus make two adjacent angle distortion of seal ring, two adjacent angle crush seal grooves respectively, reach good sealing effect, the surface of contact of sealing circle is coil type contact, and frictional force is little, long service life.4, be recessed between adjacent two jiaos of seal ring as Symmetrical Circular Arc is recessed into, make medium in recessed face hand evenly, thus reach better sealing effect.5, corner is that arc surface is connected with recessed portion, when such seal ring and groove extrude, is the contact in face and face, therefore, it is possible to protection seal ring, longer service life, also can reach better sealing effect simultaneously.The number of degrees of the angle α 6, between foursquare arc face and recessed portion consecutive tangent are 90 °-120 °, and in valve body after medium squeeze seal ring reentrant part, deformation quantity is larger, and squeezing effect is better, and sealing effect is better.
Accompanying drawing explanation
Fig. 1 is sectional drawing of the present utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1.
In figure:
1, O-ring seal 2, main body 3, through hole
4, inner seal groove 5, outer side seal groove 6, tapped hole
7, locating slot
Embodiment
Fig. 1 and Fig. 2 shows a kind of valve shaft stuffing box gland of the utility model, comprise columniform main body 2 and O-ring seal 1, main body 2 inside has through hole 3, the inner side of the sidewall of main body offers the inner seal groove 4 that 2 are held O-ring seal 1, the outside of the sidewall of main body offers the outer side seal groove 5 that two are held O-ring seal 1, two outer side seal grooves 5 and two other inner seal groove 4 are crisscross arranged in the axial direction, main body upper-end surface is provided with 6 tapped holes be evenly distributed 6, through hole 3 place of main body lower end port is provided with a circle locating slot 7, locating slot 7 matches with the mechanism in valve seat, the shape of cross section of O-ring seal 1 is corner star, for inwardly concaving between adjacent two jiaos.
The valve seal sleeve pipe of this technological scheme is structure as a whole, seal ring is inserted by seal groove during use, locating slot institute at one end loads in valve base down, now valve rod filled the through hole in stuffing box gland, be provided with corresponding structure in the valve base corresponding with stuffing box gland inner position groove, gland to be coordinated with tapped hole by bolt and screws; When changing seal ring, only bolt need be turned on, entirety can be taken out, change seal ring, change convenient.This valve seal cover top is screwed by bolt and gland, and bottom is coordinated with the counter structure in valve seat by locating slot, makes valve shaft sealing effect better.The shape of cross section of O-ring seal is corner star, due to the reentrant part of the pressure meeting crush seal circle of valve in-vivo medium, thus make two adjacent angle distortion of seal ring, two adjacent angle crush seal grooves respectively, reach good sealing effect, the surface of contact of sealing circle is coil type contact, and frictional force is little, long service life.
Further, be recessed into as Symmetrical Circular Arc is recessed between adjacent two jiaos of O-ring seal 1 of this valve shaft stuffing box gland.
Be recessed between adjacent two jiaos of seal ring as Symmetrical Circular Arc is recessed into, make medium to even in recessed face hand, thus reach better sealing effect.
Further, the corner of the O-ring seal 1 of this valve shaft stuffing box gland is that arc surface is connected with recessed portion, and the number of degrees of the angle α between the amount tangent line adjacent with recessed portion of the foursquare arc face of O-ring seal 1 are 90 °.
Corner is that arc surface is connected with recessed portion, when such seal ring and groove extrude, is the contact in face and face, therefore, it is possible to protection seal ring, longer service life, also can reach better sealing effect simultaneously.
Further, the number of degrees of the angle α between the amount tangent line adjacent with recessed portion of the foursquare arc face of O-ring seal 1 are 120 °.
In valve body after medium squeeze seal ring reentrant part, deformation quantity is larger, and squeezing effect is better, and sealing effect is better.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (6)
1. a valve shaft stuffing box gland, comprise columniform main body (2) and O-ring seal (1), described main body (2) inside has through hole (3), it is characterized in that: the inner side of the sidewall of described main body offers the inner seal groove (4) holding O-ring seal (1), the outside of the sidewall of described main body offers the outer side seal groove (5) holding O-ring seal (1), described main body upper-end surface is provided with tapped hole (6), through hole (3) place of described main body lower end port is provided with a circle locating slot (7), described locating slot (7) matches with the mechanism in valve seat, the shape of cross section of described O-ring seal (1) is corner star, for inwardly concaving between adjacent two jiaos.
2. a kind of valve shaft stuffing box gland according to claim 1, is characterized in that: described inner seal groove (4) quantity is 2, and described outer side seal groove (5) quantity is 2.
3. a kind of valve shaft stuffing box gland according to claim 2, is characterized in that: two outer side seal grooves (5) and two other inner seal groove (4) are crisscross arranged in the axial direction.
4. a kind of valve shaft stuffing box gland according to claim 1, is characterized in that: be recessed between adjacent two jiaos of described O-ring seal (1) as Symmetrical Circular Arc is recessed into.
5. a kind of valve shaft stuffing box gland according to claim 1, is characterized in that: the corner of described O-ring seal (1) is that arc surface and recessed portion are tangent.
6. a kind of valve shaft stuffing box gland according to claim 5, is characterized in that: the number of degrees of the angle α between the foursquare arc face of described O-ring seal (1) and recessed portion consecutive tangent are 90 °-120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520326145.0U CN205090077U (en) | 2015-05-20 | 2015-05-20 | Valve shaft seal cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520326145.0U CN205090077U (en) | 2015-05-20 | 2015-05-20 | Valve shaft seal cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205090077U true CN205090077U (en) | 2016-03-16 |
Family
ID=55480763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520326145.0U Expired - Fee Related CN205090077U (en) | 2015-05-20 | 2015-05-20 | Valve shaft seal cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205090077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644456A (en) * | 2018-05-16 | 2018-10-12 | 芜湖市艾德森自动化设备有限公司 | A kind of high sealing anti-corrosion valve rod |
-
2015
- 2015-05-20 CN CN201520326145.0U patent/CN205090077U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644456A (en) * | 2018-05-16 | 2018-10-12 | 芜湖市艾德森自动化设备有限公司 | A kind of high sealing anti-corrosion valve rod |
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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: 20160316 Termination date: 20160520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |