CN105370886A - Sealing ring for valve - Google Patents
Sealing ring for valve Download PDFInfo
- Publication number
- CN105370886A CN105370886A CN201410427785.0A CN201410427785A CN105370886A CN 105370886 A CN105370886 A CN 105370886A CN 201410427785 A CN201410427785 A CN 201410427785A CN 105370886 A CN105370886 A CN 105370886A
- Authority
- CN
- China
- Prior art keywords
- peripheral surface
- seal ring
- valve
- sealing ring
- inner peripheral
- 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.)
- Withdrawn
Links
Abstract
The invention discloses a sealing ring for a valve. The sealing ring comprises an inner circumferential face, an outer circumferential face coaxial with the inner circumferential face and end faces located on the two sides of the inner circumferential face and the outer circumferential face; and the sealing ring further comprises two outer circular conical surfaces coaxial with the inner circumferential face, the two outer circular conical surfaces are connected with one end of the outer circumferential face and the edge of one end face respectively, and the diameter of the end faces is smaller than the diameter of the outer circumferential face. By means of the sealing ring for the valve, the outer circular conical surfaces are arranged on the outer surface, the diameters of the two ends of the sealing ring are decreased through the outer circular conical surfaces, and when the sealing ring moves in a valve shell along with a valve element, on one hand, the sealing ring conveniently slides over a liquid via hole in the valve shell, and on the other hand, the contact area between the sealing ring and the liquid via hole can be reduced, abrasion of the sealing ring can be reduced, the sealing effect of the sealing ring can be improved, the service life of the sealing ring can be prolonged, and finally the sealing performance between the valve element and the valve shell can be improved.
Description
Technical field
The invention belongs to coal mine fully-mechanized mining technical field of hydraulic elements, specifically, the present invention relates to a kind of valve seal ring.
Background technique
At present, be applied to each hydraulic element in the oil hydraulic circuit of coal mine fully-mechanized mining hydraulic support, as manually operated valve group, in order to improve sealing effect between valve casing and spool, general employing compound sealing structure, compound sealing structure is made up of the comparatively big sealing ring outside the less O type circle of inner side and O type circle.Owing to being provided with the liquid pass hole allowing pressured fluid pass through on valve casing, liquid pass hole and comparatively big sealing ring surface can produce friction, cause seal ring easily damaged, affect seal ring working life and sealing effect, and then can cause defective valve.
Summary of the invention
The invention provides a kind of valve seal ring, object improves working life and sealing effect.
To achieve these goals, the technological scheme that the present invention takes is: a kind of valve seal ring, comprise inner peripheral surface, the outer peripheral surface coaxial with inner peripheral surface and be positioned at the end face of inner peripheral surface and outer peripheral surface both sides, also comprise two outer conical surface coaxial with described inner peripheral surface, two outer conical surface respectively with one end of described outer peripheral surface and the edge conjunction of a described end face, the diameter of end face is less than the diameter of outer peripheral surface.
Described inner peripheral surface is provided with the locating slot for accommodate O-shaped circle.
Described locating slot is along the annular positioning groove that whole circumference extends on described inner peripheral surface.
The vertical sectional shape of described locating slot is arc.
Described locating slot is positioned at the middle position of described inner peripheral surface.
The cone angle of described outer conical surface is 40 degree.
The material of described seal ring is nylon.
Valve seal ring of the present invention, by the outer conical surface that outer surface is arranged, outer conical surface makes the diameter of seal ring at end positions place reduce, when seal ring moves in valve casing along with spool, be convenient on the one hand seal ring and slip over liquid pass hole on valve casing, the area of contact with liquid pass hole can be reduced on the other hand, reduce the wearing and tearing of seal ring, thus sealing effect and the working life of seal ring can be improved, finally can improve the sealability between spool and valve casing.
Accompanying drawing explanation
This specification comprises the following drawings, shown content respectively:
Fig. 1 is the sectional view of valve seal ring of the present invention;
Fig. 2 is A place enlarged view in Fig. 1;
Fig. 3 is the erection drawing of valve seal ring of the present invention and O type circle;
Fig. 4 is the sectional view of the manually operated valve group mangetic core assembly adopting valve seal ring of the present invention;
Fig. 5 is B place enlarged view in Fig. 4;
Be labeled as in figure:
1, inner peripheral surface; 2, outer peripheral surface; 3, outer conical surface; 4, locating slot; 5, trunk portion; 6, prismoid section; 7, end face; 8, O type circle.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, be described in further detail the specific embodiment of the present invention, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present invention, technological scheme, and contribute to its enforcement.
As shown in Figure 1 to Figure 3, a kind of valve seal ring of the present invention, be the mangetic core assembly for manually operated valve group, match with O type circle 8 formation compound sealing structure, improves spool and be enclosed within the sealability between the valve casing outside spool.This valve is cirque structure by seal ring entirety, center is provided with circular hole, it end face 7 comprising an inner peripheral surface 1, outer peripheral surface 2 and be positioned at inner peripheral surface 1 and outer peripheral surface 2 both sides, inner peripheral surface 1 is coaxial with outer peripheral surface 2, end face 7 is disk, two end faces 7 parallel, and coaxial with inner peripheral surface 1, and two end faces 7 are connected with one end of inner peripheral surface 1 respectively.This valve seal ring also comprises two outer conical surface 3 coaxial with inner peripheral surface 1, two outer conical surface 3 respectively with one end of outer peripheral surface 2 and the edge conjunction of an end face 7, namely outer conical surface 3 lays respectively between outer peripheral surface 2 and an end face 7, the diameter of end face 7 is less than the diameter of outer peripheral surface 2, namely the bigger diameter end of outer conical surface 3 is connected with outer peripheral surface 2, and miner diameter end is connected with end face 7.Outer peripheral surface 2 position is the trunk portion 5 of valve seal ring, and two ends outer conical surface 3 position is the prismoid section 6 of valve seal ring, and outer conical surface 3 makes the two ends of valve seal ring conically.As shown in Figure 4 and Figure 5, be enclosed within the compound sealing structure on spool move in valve casing with spool time, the outer peripheral surface 2 of this seal ring contacts with the internal surface of valve casing, to move to the liquid pass hole position on valve casing with spool at seal ring, the two ends of seal ring are conical, thus end can be avoided directly to contact with liquid pass hole, such one side is convenient to seal ring and is slipped over liquid pass hole on valve casing, the area of contact of seal ring and liquid pass hole can be reduced on the other hand, reduce the wearing and tearing that liquid pass hole causes seal ring, thus sealing effect and the working life of seal ring can be improved, finally can improve the sealability between spool and valve casing.
Specifically, the inner peripheral surface 1 of this valve with seal ring is provided with a locating slot 4 for accommodate O-shaped circle 8, this locating slot 4 is along the annular positioning groove 4 that whole circumference extends on inner peripheral surface 1, and the vertical sectional shape of locating slot 4 is arc, its radian is about 80 degree, to adapt to the shape of O type circle 8.O type circle 8 has certain elasticity, it is arranged on the inside of this valve seal ring, this valve seal ring radially distending can be made, because spool is moveable, the sidewall of valve casing is provided with liquid pass hole, spool is entered through valve casing liquid pass hole at pressured fluid, when spool moves and liquid pass hole is alignd with seal ring with this valve, the pressured fluid that liquid pass hole overflows can form erosion to this valve outer peripheral surface 2 of seal ring, pressure is produced to this valve seal ring, and then this valve seal ring can be made to have the trend of radially shrinking, and O type circle 8 embeds in locating slot 4 and applies active force to this valve seal ring, this valve seal ring can be made to keep the trend outwards expanded, thus this valve seal ring is contacted with valve casing internal surface tightr, weaken the pressured fluid that overflows in the liquid pass hole of valve casing to the erosion of this valve seal ring, thus sealing reliability and the working life of this valve seal ring can be improved further, sealability can be improved further.Meanwhile, this valve prismoid section 6 at seal ring two ends also has certain guide functions to the pressured fluid overflowed from liquid pass hole.
As shown in Figure 2, as preferably, locating slot 4 is the middle position being in the axial direction positioned at inner peripheral surface 1, outer peripheral surface 2 is also the neutral position corresponding to inner peripheral surface 1, and locating slot 4 width is vertically greater than the width of outer peripheral surface 2, thus guarantee the O type circle 8 that locating slot 4 can hold thickness and is greater than outer peripheral surface 2 width.Therefore locating slot 4 is arranged on the middle position of inner peripheral surface 1, O type circle 8 is large by the area of contact of seal ring with this valve, and active force is strong, can guarantee that trunk portion 5 and valve casing internal surface keep larger area of contact, can improve sealing effect further.
As preferably, the cone angle of two outer conical surface 3 is 40 degree, and 40 degree is conventional chamfer dimesion.
As preferably, O type circle 8 generally adopts quality of rubber materials to make, and this valve is nylon by the material of seal ring, and the seal ring of nylon material has the advantage that intensity is high, precision is high and wear resistance is good, has higher working life and sealing effect.
Below by reference to the accompanying drawings to invention has been exemplary description.Obviously, specific implementation of the present invention is not subject to the restrictions described above.As long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technological scheme is carried out; Or without improvement, above-mentioned design of the present invention and technological scheme directly applied to other occasion, all within protection scope of the present invention.
Claims (7)
1. a valve seal ring, comprise inner peripheral surface, the outer peripheral surface coaxial with inner peripheral surface and be positioned at the end face of inner peripheral surface and outer peripheral surface both sides, it is characterized in that: also comprise two outer conical surface coaxial with described inner peripheral surface, two outer conical surface respectively with one end of described outer peripheral surface and the edge conjunction of a described end face, the diameter of end face is less than the diameter of outer peripheral surface.
2. valve seal ring according to claim 1, is characterized in that: described inner peripheral surface is provided with the locating slot for accommodate O-shaped circle.
3. valve seal ring according to claim 2, is characterized in that: described locating slot is along the annular positioning groove that whole circumference extends on described inner peripheral surface.
4. valve seal ring according to claim 3, is characterized in that: the vertical sectional shape of described locating slot is arc.
5., according to the arbitrary described valve seal ring of claim 2 to 4, it is characterized in that: described locating slot is positioned at the middle position of described inner peripheral surface.
6. valve seal ring according to claim 5, is characterized in that: the cone angle of described outer conical surface is 40 degree.
7. valve seal ring according to claim 6, is characterized in that: the material of described seal ring is nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427785.0A CN105370886A (en) | 2014-08-27 | 2014-08-27 | Sealing ring for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427785.0A CN105370886A (en) | 2014-08-27 | 2014-08-27 | Sealing ring for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105370886A true CN105370886A (en) | 2016-03-02 |
Family
ID=55373350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410427785.0A Withdrawn CN105370886A (en) | 2014-08-27 | 2014-08-27 | Sealing ring for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105370886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550949A (en) * | 2021-08-06 | 2021-10-26 | 兰州理工大学 | Working edge structure, valve core and slide valve |
-
2014
- 2014-08-27 CN CN201410427785.0A patent/CN105370886A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550949A (en) * | 2021-08-06 | 2021-10-26 | 兰州理工大学 | Working edge structure, valve core and slide valve |
| CN113550949B (en) * | 2021-08-06 | 2022-11-25 | 兰州理工大学 | Working edge structure, valve core and slide valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160302 |