CN208619810U - A kind of spherical seal stop valve - Google Patents
A kind of spherical seal stop valve Download PDFInfo
- Publication number
- CN208619810U CN208619810U CN201821088567.9U CN201821088567U CN208619810U CN 208619810 U CN208619810 U CN 208619810U CN 201821088567 U CN201821088567 U CN 201821088567U CN 208619810 U CN208619810 U CN 208619810U
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- China
- Prior art keywords
- valve
- spool
- spherical seal
- valve seat
- valve rod
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Abstract
The utility model discloses a kind of spherical seal stop valves, including valve body, valve seat, valve pocket, valve rod, spool, valve body is equipped with inlet and outlet, valve seat is equipped with inner hole, valve rod upper end couples with handwheel, valve rod lower end passes through valve pocket, sealing ring is equipped between valve rod and valve pocket, the limit shaft shoulder is equipped on valve rod in valve pocket, valve pocket lower end is equipped with pilot hole, the cross section of pilot hole and spool upper end be match it is rectangular, valve rod lower end is threaded with spool, spool lower end and the upper end of valve seat inner hole are the spherical seal surface of cooperation, the maximum outside diameter of spool lower end spherical seal surface is greater than the maximum outside diameter of valve seat inner hole upper end spherical seal surface.The utility model have the advantages that sealing surface can adequate closure, valve seat is not easy to wear, sealing effect is good, and prevents the deformation of spool, can realize zero leakage for a long time.
Description
Technical field
The utility model relates to a kind of shut-off valves.
Background technique
The shut-off valve being widely used on pipeline at present, sealing structure mostly use valve seat and spool, and valve seat is equipped with isometrical
Through-hole, spool be equipped with conical sealing face, pass through conical sealing face and through-hole upper end-face edge cooperation realize sealing；Its disadvantage
Are as follows: 1) more demanding to the concentricity of sealing surface and through-hole, this will increase manufacture difficulty, and otherwise slightly deviation, sealing surface can not
It is closed completely, generates leakage；2) sealing surface is contact of the face with line with through-hole, when closed, mutual between spool and valve seat
Active force is larger, and through-hole upper end-face edge is easy to wear, influences leakproofness；3) when opening or closing, the valve of neighbouring water outlet side
Seat has the effect of blocking, changed course to water flow, can form radial effect to spool after water flow deflecting, will lead to spool change for a long time
Shape deviates installation site, this also will increase leakage.
Utility model content
The purpose of the utility model is to overcome the disadvantages mentioned above of the prior art, provide a kind of spherical seal stop valve, it
Have the advantages that sealing surface can adequate closure, valve seat is not easy to wear, sealing effect is good, and prevents the deformation of spool, can be real for a long time
Existing zero leakage.
Purpose of the utility model is realized as follows:
A kind of spherical seal stop valve, including valve pocket, valve rod, spool that the valve body being connected and valve seat and valve body are connected, valve
Body is equipped with inlet and outlet, and valve seat is equipped with inner hole, and valve rod upper end couple with handwheel, valve rod lower end across valve pocket, valve rod and
Sealing ring is equipped between valve pocket, it is characterised in that the limit shaft shoulder is equipped on the valve rod in valve pocket, valve pocket lower end is equipped with pilot hole,
The cross section of pilot hole and spool upper end is to match rectangular, and valve rod lower end is threaded with spool, under the spool
End and the upper end of valve seat inner hole are the spherical seal surface of cooperation, and the maximum outside diameter of spool lower end spherical seal surface is greater than in valve seat
The maximum outside diameter of hole upper end spherical seal surface.
In use, valve rod only rotates, and spool makees moving up and down for straight line, the spherical shape of spool lower end by rotation handwheel
Sealing surface and the spherical seal surface of valve seat inner hole upper end cooperate the automatic capturing, it can be achieved that two sealing surfaces, even if the axis of the two
Slightly deviation, the sealing surface for being equivalent to spool can rotate on the sealing surface of valve seat, so that two sealing surfaces are closed completely, it is ensured that close
Sealing property；Meanwhile two sealing surface be contact of the face with face, contact area is big, even if the interaction force between spool and valve seat
When larger, valve seat is not also easy to wear, and sealing effect is good；
It is close in the spool lower end spherical shape that outer diameter is greater than valve seat upper end maximum outside diameter as advanced optimizing for the utility model
Cover is equipped with two or more annular diversion trenches；When opening or closing spool, it can flow back, subtract along diversion trench after water flow deflecting
The small radial impact to spool, prevents spool from deforming, further increases leakproofness, can realize zero leakage for a long time；
The utility model have the advantages that sealing surface can adequate closure, valve seat is not easy to wear, sealing effect is good, and prevent valve
The deformation of core can realize zero leakage for a long time.
Detailed description of the invention
Fig. 1 is the main view of the utility model embodiment.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawing.
As shown in Figure 1, the spherical seal stop valve, passes through screw thread including the valve body 1 integrally connected firmly and valve seat 2, with valve body 1
Valve pocket 3, valve rod 4, the spool 5 being connected, valve body 1 be equipped with water inlet 6 and water outlet 7, valve seat 2 be equipped with inner hole 15,4 upper end of valve rod with
Handwheel 8 is coupled by nut, and 4 lower end of valve rod passes through valve pocket 3, sealing ring 9 is equipped between valve rod 4 and valve pocket 3, in valve pocket 3
Valve rod 4 is equipped with the limit shaft shoulder 10, and 3 lower end of valve pocket is equipped with pilot hole 14, and the cross section of 5 upper end of pilot hole 14 and spool is to match
That closes is rectangular, and 4 lower end of valve rod is threaded with spool 5, and 5 lower end of spool is equipped with spherical seal surface 12,2 inner hole of valve seat
Upper end is equipped with the spherical seal surface 11 matched with spherical seal surface 12, and the maximum outside diameter of spool lower end spherical seal surface 12 is greater than
The maximum outside diameter of valve seat inner hole upper end spherical seal surface 11；It is close in the spool lower end spherical shape that outer diameter is greater than valve seat upper end maximum outside diameter
Cover 12 is equipped with two annular diversion trenches 16；
In use, by rotation handwheel 8, due to limiting the positioning of the shaft shoulder 10 and handwheel 8, valve rod 4 rotations, pilot hole 14
So that the spool 5 being threaded with valve rod 4 makees moving up and down for straight line, the spherical seal surface 12 and valve seat 2 of 5 lower end of spool
Spherical seal surface 11 cooperation, it can be achieved that two sealing surfaces automatic capturing, even if the axis of the two slightly deviation, is equivalent to spool
2 sealing surface 12 can rotate on the sealing surface 11 of valve seat 5, so that two sealing surfaces are closed completely, it is ensured that sealing performance；Meanwhile
Two sealing surfaces are contact of the face with face, and contact area is big, even if the interaction force between spool 2 and valve seat 5 is larger, valve seat
2 is also easy to wear, and sealing effect is good；When opening or closing spool 5, can flow back along diversion trench 16 after water flow deflecting, reduction pair
The radial impact of spool 2, prevents spool from deforming, and further increases leakproofness, can realize zero leakage for a long time.
Claims (2)
1. a kind of spherical seal stop valve, including valve pocket, valve rod, spool that the valve body being connected and valve seat and valve body are connected, valve body
Equipped with inlet and outlet, valve seat is equipped with inner hole, and valve rod upper end couples with handwheel, and valve rod lower end passes through valve pocket, valve rod and valve
Sealing ring is equipped between set, it is characterised in that the limit shaft shoulder is equipped on the valve rod in valve pocket, valve pocket lower end is equipped with pilot hole, leads
Cross section to hole and spool upper end is to match rectangular, and valve rod lower end is threaded with spool, the spool lower end
It is the spherical seal surface of cooperation with valve seat inner hole upper end, the maximum outside diameter of spool lower end spherical seal surface is greater than on valve seat inner hole
Hold the maximum outside diameter of spherical seal surface.
2. a kind of spherical seal stop valve according to claim 1, it is characterised in that it is maximum to be greater than valve seat upper end in outer diameter
The spool lower end spherical seal surface of outer diameter is equipped with two or more annular diversion trenches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821088567.9U CN208619810U (en) | 2018-07-10 | 2018-07-10 | A kind of spherical seal stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821088567.9U CN208619810U (en) | 2018-07-10 | 2018-07-10 | A kind of spherical seal stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208619810U true CN208619810U (en) | 2019-03-19 |
Family
ID=65703653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821088567.9U Active CN208619810U (en) | 2018-07-10 | 2018-07-10 | A kind of spherical seal stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208619810U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838608A (en) * | 2019-04-08 | 2019-06-04 | 浙江金隆铜业股份有限公司 | A kind of shut-off valve |
| CN110220000A (en) * | 2019-05-21 | 2019-09-10 | 上海航天设备制造总厂有限公司 | A kind of valve hard sealing structure of the spare encapsulation scheme of band |
-
2018
- 2018-07-10 CN CN201821088567.9U patent/CN208619810U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838608A (en) * | 2019-04-08 | 2019-06-04 | 浙江金隆铜业股份有限公司 | A kind of shut-off valve |
| CN110220000A (en) * | 2019-05-21 | 2019-09-10 | 上海航天设备制造总厂有限公司 | A kind of valve hard sealing structure of the spare encapsulation scheme of band |
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