CN204253922U - Tightly prevent the ball valve leaked outside - Google Patents
Tightly prevent the ball valve leaked outside Download PDFInfo
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- CN204253922U CN204253922U CN201420693186.9U CN201420693186U CN204253922U CN 204253922 U CN204253922 U CN 204253922U CN 201420693186 U CN201420693186 U CN 201420693186U CN 204253922 U CN204253922 U CN 204253922U
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- seal
- valve
- stuffing box
- convex platform
- seal ring
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Abstract
Tightly prevent the ball valve leaked outside, relate to the structure of ball valve, comprise valve body, valve gap, stuffing box, spheroid, valve rod, between valve rod and stuffing box, set gradually the first seal ring, the second elastomer seal, the 3rd cover shape seal ring, metal ring, the 5th elastomer seal, filler, stuffing nut from the bottom to top; The lower end of valve rod is wholely set lower convex platform and convex platform, and convex platform is arranged on the top of lower convex platform, and the first seal ring is arranged on the upper-end surface of lower convex platform; Second elastomer seal is arranged on the upper surface of convex platform; Metal ring is arranged interior seal groove, external sealed groove, multiple through hole, interior seal groove is arranged on the inner circumferential of metal ring, external sealed groove is arranged on the periphery of metal ring, seal groove and external sealed groove in multiple through hole is communicated with, stuffing box arranges the charging hole being communicated with external sealed groove, the stuffing box seal with screwed joint nut at charging hole place; Stuffing nut is threaded with stuffing box.The utility model adopts six road sealings, the reliability of sealing when ensureing that valve rod rotates.
Description
Technical field
The utility model relates to the structure of ball valve, is applicable to the occasion needing tightly to prevent from leaking outside, as hypertoxic hazardous medium, involve great expense medium and other do not allow the operating mode etc. of leaking.
Background technique
Ordinary ball valve mainly comprises valve body, valve gap, stuffing box, spheroid, valve rod, valve gap is connected by the first bolt with valve body, stuffing box is connected to the neck of valve body by the second bolt, spheroid is arranged between valve body and valve gap, first valve seat is set between spheroid and valve body, arrange the second valve seat between spheroid and valve gap, one end of valve rod is fixedly connected with spheroid, the other end stretches out valve body and connecting handle after stuffing box.Valve opening and closing relies on valve rod to rotate and realizes, and during rotation, seal request is higher, but the ball valve motive sealing of existing structure can not ensure.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the ball valve tightly preventing leaking outside that a kind of motive sealing is effective.
The purpose of this utility model is achieved in that the ball valve tightly preventing from leaking outside, comprise valve body, valve gap, stuffing box, spheroid, valve rod, valve gap is connected by the first bolt with valve body, stuffing box is connected to the neck of valve body by the second bolt, spheroid is arranged between valve body and valve gap, arrange the first valve seat between spheroid and valve body, arrange the second valve seat between spheroid and valve gap, the lower end of valve rod is fixedly connected with spheroid, valve body is stretched out in upper end and connecting handle after stuffing box; Between described valve rod and stuffing box, set gradually the first seal ring from the bottom to top, the second elastomer seal, the 3rd overlap shape seal ring, metal ring, the 5th elastomer seal, filler, stuffing nut; The lower end of described valve rod is wholely set lower convex platform and convex platform, and convex platform is arranged on the top of lower convex platform, and the first seal ring is arranged on the upper-end surface of lower convex platform; Described second elastomer seal is arranged on the upper surface of convex platform; Described metal ring is arranged interior seal groove, external sealed groove, multiple through hole, interior seal groove is arranged on the inner circumferential of metal ring, external sealed groove is arranged on the periphery of metal ring, seal groove and external sealed groove in multiple through hole is communicated with, stuffing box arranges the charging hole being communicated with external sealed groove, the stuffing box seal with screwed joint nut at charging hole place; Described stuffing nut is threaded with stuffing box.
As improvement of the present utility model, described second elastomer seal comprises the second seal ring and the second spring, and the lower end surface of the second seal ring arranges opening, and the second spring is arranged in the opening of the second seal ring.
As further improvement of the utility model, described 5th elastomer seal comprises the 5th seal ring and the 5th spring, and the lower end surface of the 5th seal ring arranges opening, and the 5th spring is arranged in the opening of the 5th seal ring.
The beneficial effects of the utility model are: the first seal ring is installed on the lower shoulder upper-end surface of valve rod, form first sealing, when pressure medium acts on valve rod section, compress this seal ring, realize the sealing of first road;
Second elastomer seal, for being with spring-supported seal ring, Open Side Down for seal ring, meet pressure medium direction, inner employing spring supporting, ensure to fit in interior outer seal portion position and valve rod cylindrical and stuffing box inwall, back-up ring is arranged at this seal ring top, and combination forms second sealing;
Cover shape seal ring, with bearing function, installs and valve rod cylindrical and stuffing box endoporus place, and when valve rod rotates, all the other top fillers form metal (upper, and the dry friction of isolation valve rod and stuffing box body ensures valve rod stability of rotation, has sealing function simultaneously.Three seals is formed with this;
Metal ring, internal and external circumference is with seal groove, and interior outer well surface is connected by the aperture that surrounding is uniform.When under the state of emergency, when all seal rings damage, turn on the sealing nut at stuffing box charging hole place, seal gease can be injected from screw from outside, after seal gease press-in, enter in the inside and outside annular groove of metal ring, block flow channel inside and outside medium, realize the valve rod external sealed under the state of emergency.The 4th road sealing is formed with this;
5th elastomer seal, for being with spring-supported seal ring, Open Side Down for seal ring, meets pressure medium direction, inner employing spring supporting, ensureing to fit in interior outer seal portion position and valve rod cylindrical and stuffing box inwall, when tightening stuffing nut, compressing the 5th elastomer seal simultaneously, rely on top impacting force, bottom medium thrust, this seal ring closely compresses valve rod cylindrical and stuffing box endoporus, realizes the 5th road sealing;
The last sealing being sealed into filler together, is installed on the top of stuffing box, and after compressing stuffing nut, filler is extruded simultaneously, is evenly pressed in valve rod cylindrical and stuffing box inwall, the interior outer flow passage of shutoff medium, realizes the 6th road sealing;
In sum, the utility model adopts six road sealings, the reliability of sealing when ensureing that valve rod rotates.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Embodiment
As shown in Figure 1, 2, tightly prevent the ball valve leaked outside, comprise valve body 7, valve gap 8, stuffing box 9, spheroid 11, valve rod 10, valve gap 8 and valve body 7 are bolted, stuffing box 9 is bolted the neck at valve body 7, and spheroid 11 is arranged between valve body 7 and valve gap 8, arranges the first valve seat 12 between spheroid 11 and valve body 7, arrange the second valve seat 13 between spheroid 11 and valve gap 8, the lower end of valve rod 10 is fixedly connected with spheroid 11, valve body 7 is stretched out in upper end and connecting handle 14 after stuffing box 9.
Between valve rod 10 and stuffing box 9, set gradually the first seal ring 1, second elastomer seal 2, the 3rd from the bottom to top overlap shape seal ring 3, metal ring 4, the 5th elastomer seal 5, filler 6, stuffing nut 15.
The lower end of valve rod 10 is wholely set lower convex platform 10-1 and convex platform 10-2, and convex platform 10-2 is arranged on the top of lower convex platform 10-1, and the first seal ring 1 is arranged on the upper-end surface of lower convex platform 10-1.First seal ring 1 forms first sealing.
Second elastomer seal 2 is arranged on the upper surface of convex platform 10-2, second elastomer seal 2 comprises the second seal ring 2-1 and the second spring 2-3, the lower end surface of the second seal ring 2-1 arranges opening 2-2, and the second spring 2-3 is arranged in the opening 2-2 of the second seal ring 2-1.Second elastomer seal 2 forms second sealing.
3rd cover shape seal ring 3 forms three seals.
Metal ring 4 is arranged interior seal groove 4-1, external sealed groove 4-3, multiple through hole 4-2, interior seal groove 4-1 is arranged on the inner circumferential of metal ring 4, external sealed groove 4-3 is arranged on the periphery of metal ring 4, seal groove 4-1 and external sealed groove 4-3 in multiple through hole 4-2 is communicated with, stuffing box 9 arranges the charging hole 16 being communicated with external sealed groove 4-3, the stuffing box 9 seal with screwed joint nut 17 at charging hole 16 place.Metal ring 4 forms the 4th road sealing.
5th elastomer seal 5 comprises the 5th seal ring 5-1 and the 5th spring 5-3, and the lower end surface of the 5th seal ring 5-1 arranges opening 5-2, and the 5th spring 5-3 is arranged in the opening 5-2 of the 5th seal ring 5-1.5th elastomer seal 5 forms the 5th road sealing.
Filler 6 forms the 6th road sealing, and is fixed by stuffing nut 15, and stuffing nut 15 is threaded with stuffing box 9.
Claims (3)
1. tightly prevent the ball valve leaked outside, comprise valve body, valve gap, stuffing box, spheroid, valve rod, valve gap is connected by the first bolt with valve body, stuffing box is connected to the neck of valve body by the second bolt, spheroid is arranged between valve body and valve gap, arrange the first valve seat between spheroid and valve body, arrange the second valve seat between spheroid and valve gap, the lower end of valve rod is fixedly connected with spheroid, valve body is stretched out in upper end and connecting handle after stuffing box; It is characterized in that: between described valve rod and stuffing box, set gradually the first seal ring from the bottom to top, the second elastomer seal, the 3rd overlaps shape seal ring, metal ring, the 5th elastomer seal, filler, stuffing nut; The lower end of described valve rod is wholely set lower convex platform and convex platform, and convex platform is arranged on the top of lower convex platform, and the first seal ring is arranged on the upper-end surface of lower convex platform; Described second elastomer seal is arranged on the upper surface of convex platform; Described metal ring is arranged interior seal groove, external sealed groove, multiple through hole, interior seal groove is arranged on the inner circumferential of metal ring, external sealed groove is arranged on the periphery of metal ring, seal groove and external sealed groove in multiple through hole is communicated with, stuffing box arranges the charging hole being communicated with external sealed groove, the stuffing box seal with screwed joint nut at charging hole place; Described stuffing nut is threaded with stuffing box.
2. the ball valve tightly preventing leaking outside according to claim 1, is characterized in that: described second elastomer seal comprises the second seal ring and the second spring, and the lower end surface of the second seal ring arranges opening, and the second spring is arranged in the opening of the second seal ring.
3. the ball valve tightly preventing leaking outside according to claim 1, is characterized in that: described 5th elastomer seal comprises the 5th seal ring and the 5th spring, and the lower end surface of the 5th seal ring arranges opening, and the 5th spring is arranged in the opening of the 5th seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693186.9U CN204253922U (en) | 2014-11-19 | 2014-11-19 | Tightly prevent the ball valve leaked outside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420693186.9U CN204253922U (en) | 2014-11-19 | 2014-11-19 | Tightly prevent the ball valve leaked outside |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253922U true CN204253922U (en) | 2015-04-08 |
Family
ID=52958229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420693186.9U Active CN204253922U (en) | 2014-11-19 | 2014-11-19 | Tightly prevent the ball valve leaked outside |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204253922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972307A (en) * | 2016-06-24 | 2016-09-28 | 江苏永钢集团有限公司 | Valve sealing device |
-
2014
- 2014-11-19 CN CN201420693186.9U patent/CN204253922U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972307A (en) * | 2016-06-24 | 2016-09-28 | 江苏永钢集团有限公司 | Valve sealing device |
| CN105972307B (en) * | 2016-06-24 | 2018-04-13 | 江苏永钢集团有限公司 | A kind of valve sealing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |