CN204003736U - A kind of valve compound sealing structure - Google Patents
A kind of valve compound sealing structure Download PDFInfo
- Publication number
- CN204003736U CN204003736U CN201420487968.7U CN201420487968U CN204003736U CN 204003736 U CN204003736 U CN 204003736U CN 201420487968 U CN201420487968 U CN 201420487968U CN 204003736 U CN204003736 U CN 204003736U
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- CN
- China
- Prior art keywords
- seal ring
- peripheral surface
- sealing structure
- exterior seal
- compound sealing
- 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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Abstract
The utility model discloses a kind of valve compound sealing structure, comprise inner seal ring and exterior seal ring, exterior seal ring comprises inner peripheral surface, with the coaxial outer peripheral surface of inner peripheral surface and be positioned at inner peripheral surface and the end face of outer peripheral surface both sides, exterior seal ring also comprises two outer conical surface coaxial with inner peripheral surface, two outer conical surface are connected with one end of outer peripheral surface and the edge of an end face respectively, and the diameter of end face is less than the diameter of outer peripheral surface.The outer conical surface that this valve arranges by the outer surface at exterior seal ring with compound sealing structure, outer conical surface makes exterior seal ring reduce at the diameter at end positions place, in the time that compound sealing structure moves in valve casing along with spool, being convenient to exterior seal ring slips over the liquid pass hole on valve casing on the one hand, can reduce on the other hand the area of contact with liquid pass hole, reduce the wearing and tearing of exterior seal ring, thereby can improve sealing effect and the working life of compound sealing structure, finally can improve the sealability between spool and valve casing.
Description
Technical field
The utility model belongs to coal mine fully-mechanized mining technical field of hydraulic elements, and specifically, the utility model relates to a kind of valve compound sealing structure.
Background technique
At present, be applied to the each hydraulic element in the oil hydraulic circuit of coal mine fully-mechanized mining hydraulic support, as manually operated valve group, between valve casing and spool in order to improve sealing effect, the general compound sealing structure that adopts, compound sealing structure is made up of the larger exterior seal ring of the less inner seal ring in inner side and outside.Owing to being provided with the liquid pass hole that allows pressured fluid pass through on valve casing, the surface of liquid pass hole and exterior seal ring can produce friction, causes exterior seal ring easily damaged, affects working life and the sealing effect of sealing configuration, and then can cause defective valve.
Model utility content
The utility model provides a kind of valve compound sealing structure, and object is to improve working life and sealing effect.
To achieve these goals, the technological scheme that the utility model is taked is: a kind of valve compound sealing structure, comprise inner seal ring and exterior seal ring, exterior seal ring comprises inner peripheral surface, with the coaxial outer peripheral surface of inner peripheral surface and be positioned at inner peripheral surface and the end face of outer peripheral surface both sides, described exterior seal ring also comprises two outer conical surface coaxial with described inner peripheral surface, two outer conical surface are connected with one end of described outer peripheral surface and the edge of a described end face respectively, and 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 holding described inner seal ring.
Described locating slot is the annular positioning groove along whole circumferential extension on described inner peripheral surface.
The vertical sectional shape of described locating slot is arc.
Described locating slot is positioned at the neutral position place of described inner peripheral surface.
The cone angle of described outer conical surface is 40 degree.
The material of described exterior seal ring is nylon.
Described inner seal ring is O type circle.
The material of described inner seal ring is rubber.
Valve compound sealing structure of the present utility model, the outer conical surface arranging by the outer surface at exterior seal ring, outer conical surface makes exterior seal ring reduce at the diameter at end positions place, in the time that compound sealing structure moves in valve casing along with spool, being convenient to exterior seal ring slips over the liquid pass hole on valve casing on the one hand, can reduce on the other hand the area of contact with liquid pass hole, reduce the wearing and tearing of exterior seal ring, thereby can improve sealing effect and the working life of compound sealing structure, finally can improve the sealability between spool and valve casing.
Brief description of the drawings
This specification comprises the following drawings, shown in content respectively:
Fig. 1 is the sectional view of the utility model compound sealing structure;
Fig. 2 is the sectional view of exterior seal ring;
Fig. 3 is A place enlarged view in Fig. 2;
Fig. 4 is the sectional view that adopts the manually operated valve group mangetic core assembly of the utility model compound sealing structure;
Fig. 5 is B place enlarged view in Fig. 4;
In figure, be labeled as:
1, exterior seal ring; 11, inner peripheral surface; 12, outer peripheral surface; 13, outer conical surface; 14, locating slot; 15, trunk portion; 16, frustum portion; 17, end face; 2, inner seal ring.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is described in further detail, and object is to help those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technological scheme, and contributes to its enforcement.
As shown in Figure 1 to Figure 3, a kind of valve compound sealing structure of the utility model, is the mangetic core assembly for manually operated valve group, improves spool and is enclosed within the sealability between the valve casing outside spool.This valve is to be made up of inner seal ring 2 and the exterior seal ring 1 being enclosed within outside inner seal ring 2 with compound sealing structure, exterior seal ring 1 entirety is cirque structure, center is provided with circular hole, exterior seal ring 1 comprises an inner peripheral surface 11, an outer peripheral surface 12 and is positioned at inner peripheral surface 11 and the end face 17 of outer peripheral surface 12 both sides, inner peripheral surface 11 is coaxial with outer peripheral surface 12, end face 17 is disk, two end faces 17 parallel, and coaxial with inner peripheral surface 11, and two end faces 17 are connected with one end of inner peripheral surface 11 respectively.Exterior seal ring 1 also comprises two outer conical surface 13 coaxial with inner peripheral surface 11, two outer conical surface 13 are connected with one end of outer peripheral surface 12 and the edge of an end face 17 respectively, be that outer conical surface 13 lays respectively between outer peripheral surface 12 and an end face 17, the diameter of end face 17 is less than the diameter of outer peripheral surface 12, the bigger diameter end that is outer conical surface 13 is connected with outer peripheral surface 12, and miner diameter end is connected with end face 17.Outer peripheral surface 12 positions are the trunk portion 15 of exterior seal ring 1, and outer conical surface 13 positions in two ends are the frustum portion 16 at exterior seal ring 1 two ends, and outer conical surface 13 makes the two ends of exterior seal ring 1 be conical.As shown in Figure 4 and Figure 5, in the time being enclosed within compound sealing structure on spool and moving in valve casing with spool, the outer peripheral surface 12 of exterior seal ring 1 contacts with the internal surface of valve casing, move to the liquid pass hole position on valve casing at exterior seal ring 1 with spool, the two ends of exterior seal ring 1 are conical, thereby can avoid the end of exterior seal ring 1 directly to contact with liquid pass hole, being convenient to exterior seal ring 1 slips over the liquid pass hole on valve casing so on the one hand, can reduce on the other hand the area of contact of exterior seal ring 1 and liquid pass hole, reduce the wearing and tearing that liquid pass hole causes exterior seal ring 1, thereby can improve sealing effect and the working life of this compound sealing structure, finally can improve the sealability between spool and valve casing.
Specifically, on the inner peripheral surface 11 of exterior seal ring 1, be also provided with one for holding the locating slot 14 of inner seal ring 2, this locating slot 14 is the annular positioning groove 14 along whole circumferential extension on inner peripheral surface 11, and the vertical sectional shape of locating slot 14 is arc, its radian is 80 degree left and right, to adapt to the shape of inner seal ring 2.Inner seal ring 2 has certain elasticity, it is arranged on the inside of exterior seal ring 1, can make the radially outside distending of exterior seal ring 1, because spool is for movably, on the sidewall of valve casing, be provided with liquid pass hole, in the time that pressured fluid enters spool through valve casing liquid pass hole, spool moves when liquid pass hole is alignd with exterior seal ring 1, the pressured fluid that liquid pass hole overflows can form erosion to the outer peripheral surface of exterior seal ring 1 12, exterior seal ring 1 is produced to pressure, and then can make exterior seal ring 1 have the trend of radially shrinking, and inner seal ring 2 embeds in locating slot 14 exterior seal ring 1 is applied to active force, can make exterior seal ring 1 keep the trend outwards expanding, thereby what make that exterior seal ring 1 contacts with valve casing internal surface is tightr, weaken the erosion to exterior seal ring 1 of pressured fluid from overflowing in the liquid pass hole of valve casing, thereby can further improve sealing reliability and the working life of exterior seal ring 1, can further improve sealability.Meanwhile, the frustum portion 16 at exterior seal ring 1 two ends also has certain guide functions to the pressured fluid overflowing from liquid pass hole.
As shown in Figure 2, as preferably, locating slot 14 is to be positioned at inner peripheral surface 11 neutral position place in the axial direction, outer peripheral surface 12 is also the neutral position corresponding to inner peripheral surface 11, and locating slot 14 width is vertically greater than the width of outer peripheral surface 12, thereby guarantee that locating slot 14 can hold the inner seal ring 2 that thickness is greater than outer peripheral surface 12.Therefore locating slot 14 is arranged on to the neutral position place of inner peripheral surface 11, area of contact between inner seal ring 2 and exterior seal ring 1 is large, active force is strong, can guarantee trunk portion 15 area of contact larger with the maintenance of valve casing internal surface of exterior seal ring 1, can further improve sealing effect.
As preferably, the cone angle of two outer conical surface 13 is 40 degree, and 40 degree are conventional chamfer dimesion.
As preferably, the O RunddichtringO of inner seal ring 2 for adopting quality of rubber materials to make, has certain elasticity.The material of exterior seal ring 1 is nylon, and the seal ring of nylon material has advantages of 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 the utility model is exemplarily described.Obviously, the utility model specific implementation is not subject to the restrictions described above.As long as having adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; Or without improvement, above-mentioned design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (9)
1. a valve compound sealing structure, comprise inner seal ring and exterior seal ring, exterior seal ring comprises inner peripheral surface, with the coaxial outer peripheral surface of inner peripheral surface and be positioned at inner peripheral surface and the end face of outer peripheral surface both sides, it is characterized in that: described exterior seal ring also comprises two outer conical surface coaxial with described inner peripheral surface, two outer conical surface are connected with one end of described outer peripheral surface and the edge of a described end face respectively, and the diameter of end face is less than the diameter of outer peripheral surface.
2. valve compound sealing structure according to claim 1, is characterized in that: described inner peripheral surface is provided with the locating slot for holding described inner seal ring.
3. valve compound sealing structure according to claim 2, is characterized in that: described locating slot is the annular positioning groove along whole circumferential extension on described inner peripheral surface.
4. valve compound sealing structure 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 compound sealing structure of claim 2 to 4, it is characterized in that: described locating slot is positioned at the neutral position place of described inner peripheral surface.
6. valve compound sealing structure according to claim 5, is characterized in that: the cone angle of described outer conical surface is 40 degree.
7. valve compound sealing structure according to claim 6, is characterized in that: the material of described exterior seal ring is nylon.
8. valve compound sealing structure according to claim 7, is characterized in that: described inner seal ring is O type circle.
9. valve compound sealing structure according to claim 8, is characterized in that: the material of described inner seal ring is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420487968.7U CN204003736U (en) | 2014-08-27 | 2014-08-27 | A kind of valve compound sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420487968.7U CN204003736U (en) | 2014-08-27 | 2014-08-27 | A kind of valve compound sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003736U true CN204003736U (en) | 2014-12-10 |
Family
ID=52043743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420487968.7U Expired - Fee Related CN204003736U (en) | 2014-08-27 | 2014-08-27 | A kind of valve compound sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003736U (en) |
-
2014
- 2014-08-27 CN CN201420487968.7U patent/CN204003736U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160827 |