CN205101659U - Packing structure and ball valve - Google Patents
Packing structure and ball valve Download PDFInfo
- Publication number
- CN205101659U CN205101659U CN201520858754.0U CN201520858754U CN205101659U CN 205101659 U CN205101659 U CN 205101659U CN 201520858754 U CN201520858754 U CN 201520858754U CN 205101659 U CN205101659 U CN 205101659U
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- CN
- China
- Prior art keywords
- stuffing box
- filler
- packing box
- valve rod
- valve body
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Abstract
The utility model provides a packing structure and ball valve, it includes valve body and valve rod, set up the packing box between valve body and the valve rod, set up gland on the packing box, fill in the packing box and pack, it packs to set up between gland and the filler presses the cover, the packing box includes packing box and lower packing box, it is the toper with lower packing box to go up the packing box, and just the conical surface between them sets up in opposite directions, pack respectively and the last packing box and the shape looks adaptation of packing box down, it is unreliable to have solved current packing seal department, and filler department was easy when current packing seal structure was used leaks, and adopt novel packing structure, and have two upper and lower tapered fillers, can fasten simultaneously from top to bottom, on the big pipeline of pressure oscillation, increase the loading spring, sealed just being difficult to of effectual assurance filler department is leaked, and it is more reliable and more stable to make it sealing performance.
Description
Technical field
The utility model belongs to valve field, is specifically related to a kind of packing seal structure and ball valve.
Background technique
Along with the development of World Economics and improving constantly environmental protection requirement, world's industrial structure is also in continuous adjustment, therefore more and more extensive to the use of ball valve, especially to the particularly important and extensive accreditation of the protection of environment.At present in the projects such as petrochemical industry, Coal Chemical Industry, Gas Industry, because sealing place at filler place is often leaked.
Occur that the filler side of the being filler that the packing seal position of the valve rod of ball valve adopts and monolateral V-type filler seal in the market, can easily occur leaking, bring some to environment and pollute.And New Packings structure decreases tens times, even hundreds of times with helium mass analyzer inspection than the leakage rate of the packing seal structure of old structure in the environment.
Existing ball valve has 1 usually) the filler side of the employing filler at filler place and monolateral V-type filler, compressing filler power along with the change of the degree of depth successively decreases gradually, and sealing herein is easily leaked.The most easily leak when high pressure and pressure change greatly especially; 2) packing seal for this sealing configuration produces the friction factor herein of valve rod greatly, and moment of torsion increases; 3) requirement of hold-down grid is strengthened, the requirement of two header studs is increased.
Model utility content
In order to solve above deficiency, the utility model provides a kind of packing seal structure and ball valve.
The utility model provides: a kind of packing seal structure, it comprises valve body and valve rod, between described valve body and valve rod, stuffing box is set, stuffing box arranges Gland, in described stuffing box, fills filler, between described Gland and filler, filler pressing sleeve is set, described stuffing box comprises stuffing box and lower stuffing box, described upper stuffing box and lower stuffing box are taper, and both conical surfaces are arranged in opposite directions, and described filler is suitable with the shape of upper stuffing box and lower stuffing box respectively.
Arrange interior filler pressing sleeve bottom described lower stuffing box, described valve rod circumference is outstanding forms position stop piece, and described interior filler pressing sleeve is placed on position stop piece.
Between described interior filler pressing sleeve and the position stop piece of valve rod, loading elastic component is set.
Described loading elastic component is disc spring.
A kind of ball valve with above-mentioned packing seal structure, it comprises valve body, valve rod and spheroid, and described spheroid is placed in valve body, and arranges valve seat with the both sides of valve body contact, described spheroid is connected with valve rod, is provided with above-mentioned packing seal structure between described valve rod and valve body.
It is unreliable that the utility model solves existing packing seal place, and when existing packing seal structure uses, filler place easily leaks; And adopt New Packings structure, and with upper and lower two tapered fillers, can be simultaneously fastening up and down, on the pipeline that pressure surge is large, increase loading spring, effective guarantee filler place sealing is just not easy to leak, and makes it sealability more reliable and more stable.
Accompanying drawing explanation
Fig. 1 is the generalized section of a kind of embodiment of the present utility model.
Fig. 2 is the generalized section of packing seal structure.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As depicted in figs. 1 and 2, the utility model discloses a kind of packing seal structure, go for various valve body, it comprises valve body, valve rod, between valve body and valve rod, stuffing box is set, filler is filled in stuffing box, between described Gland 8 and filler 12, filler pressing sleeve 7 is set, stuffing box is divided into upper and lower two-part, upper 16 one-tenth, stuffing box inverted conical, the taper shape that described lower 15 one-tenth, stuffing box is just being put, both conical surfaces are arranged in opposite directions, and do not fit, namely a hourglass shape is formed, and filler 12 is filled in stuffing box the taper filler also forming two heads and be connected, two taper fillers setting up and down, its when pressurized and stuffing box form wedge-like engagement, simultaneously fastening up and down, improve sealing effect.
Arrange interior filler pressing sleeve 11 bottom described lower stuffing box, described valve rod circumference is outstanding forms position stop piece, and described interior filler pressing sleeve is placed on position stop piece, arranges loading elastic component between described interior filler pressing sleeve and the position stop piece of valve rod, and described loading elastic component is disc spring.On the pipeline that pressure surge is larger, increase in the bottom of interior filler pressing sleeve and load elastic component, utilize loading elastic component to implement a pressure to lower stuffing box, ensure the sealing effect of upper and lower stuffing box.
The utility model additionally provides an embodiment, ball valve, and it comprises valve body 1, valve rod 4 and spheroid 3, described spheroid is placed in valve body, and valve seat 5 is set with the both sides of valve body contact, described spheroid is connected with valve rod, is provided with above-mentioned packing seal structure between described valve rod and valve body.
In valve body both sides, body cap 2 is set, for fixing, valve rod is connected with spheroid, and on valve rod, circumference is outstanding is fastened between stuffing box and spheroid, and pad 6 is set between valve rod and valve body, on this is outstanding, place disc spring 13, filler pressing sleeve 11 in disc spring 13 is placed, fixes filler for below, disc spring has certain pretightening force simultaneously, between disc spring and valve rod, be provided with axle sleeve 10, this axle sleeve is set on valve rod, arranges pad 9 between disc spring and valve rod.Valve rod exposes position outside through stuffing box and operating device is linked, and this operating device can be handle 14 or other electric control structures.
Between the valve rod and valve body of ball valve, arrange this packing seal structure, to ensure the stressed sealing of stuffing box, effective guarantee filler place sealing is just not easy to leak, and makes it sealability more reliable and more stable.And it meets low leakage, meets environmental protection concept; And sealing filling-material structure meets the Changing Pattern of filler compressive force; According to filler pressure change, design back pressurization fastening structure, namely loads elastic component, can improve its anti-pressure ability further; Under pressure increase, the more tightly crush seal of lower tapered filler, owing to adopting taper filler, the power that valve rod is subject to reduces, therefore the also corresponding minimizing of required torque force, and the loading force of the screw simultaneously hold-down grid fixed reduces.
Embodiment should not be considered as restriction of the present utility model, but any improvement done based on spirit of the present utility model, all should within protection domain of the present utility model.
Claims (5)
1. a packing seal structure, it comprises valve body and valve rod, between described valve body and valve rod, stuffing box is set, stuffing box arranges Gland, in described stuffing box, fills filler, between described Gland and filler, filler pressing sleeve is set, it is characterized in that: described stuffing box comprises stuffing box and lower stuffing box, described upper stuffing box and lower stuffing box are taper, and both conical surfaces are arranged in opposite directions, and described filler is suitable with the shape of upper stuffing box and lower stuffing box respectively.
2. packing seal structure according to claim 1, is characterized in that, arranges interior filler pressing sleeve bottom described lower stuffing box, and described valve rod circumference is outstanding forms position stop piece, and described interior filler pressing sleeve is placed on position stop piece.
3. packing seal structure according to claim 2, is characterized in that, arranges loading elastic component between described interior filler pressing sleeve and the position stop piece of valve rod.
4. packing seal structure according to claim 3, is characterized in that, described loading elastic component is disc spring.
5. one kind has the ball valve of the packing seal structure described in the claims 1,2,3 or 4, it is characterized in that: it comprises valve body, valve rod and spheroid, described spheroid is placed in valve body, and valve seat is set with the both sides of valve body contact, described spheroid is connected with valve rod, is provided with above-mentioned packing seal structure between described valve rod and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858754.0U CN205101659U (en) | 2015-11-02 | 2015-11-02 | Packing structure and ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858754.0U CN205101659U (en) | 2015-11-02 | 2015-11-02 | Packing structure and ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101659U true CN205101659U (en) | 2016-03-23 |
Family
ID=55517441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520858754.0U Active CN205101659U (en) | 2015-11-02 | 2015-11-02 | Packing structure and ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205101659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972306A (en) * | 2016-06-02 | 2016-09-28 | 天津大学 | Zero-leakage type valve rod sealing structure |
-
2015
- 2015-11-02 CN CN201520858754.0U patent/CN205101659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972306A (en) * | 2016-06-02 | 2016-09-28 | 天津大学 | Zero-leakage type valve rod sealing structure |
| CN105972306B (en) * | 2016-06-02 | 2018-05-04 | 天津大学 | A kind of zero-leakage type valve rod leak-proof structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1921 Binhai 1st Road, economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Founder Valve Group Co.,Ltd. Address before: Yongjia oubeizhen Wenzhou County of Zhejiang province 325102 city and village Patentee before: FANGZHENG VALVE GROUP Co.,Ltd. |
|
| CP03 | Change of name, title or address |