CN206361248U - A kind of ball-valve valve rod filling pressure self sealing structure - Google Patents
A kind of ball-valve valve rod filling pressure self sealing structure Download PDFInfo
- Publication number
- CN206361248U CN206361248U CN201621348270.2U CN201621348270U CN206361248U CN 206361248 U CN206361248 U CN 206361248U CN 201621348270 U CN201621348270 U CN 201621348270U CN 206361248 U CN206361248 U CN 206361248U
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- Prior art keywords
- valve
- filler
- valve rod
- self
- valve body
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- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 66
- 210000004907 gland Anatomy 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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Abstract
The utility model, which is related in a kind of ball-valve valve rod filling pressure self sealing structure, including valve body, spheroid, valve rod, filler and self-fastening pressure filler pressing sleeve, valve body, is provided with spheroid, and the lower end of valve rod is mounted in the spheroid, it is characterised in that：The mounting hole lower end of stem lower portion is fixed with an anti-attrition pad, and the spacing regulation of the stem outer circumference in mounting hole between anti-attrition pad and filler is provided with a self-fastening pressure filler pressing sleeve.This structure improves valve stem seal performance；Reduce and compress gland number of operations, safeguard convenient reliable, further, it is possible to automatically adjust filler thrust size according to pressure, moment of torsion is opened in reduction, increases filler service life.
Description
Technical field
The utility model belongs to oil, petrochemical industry oil transportation, the valve field of gas pipeline, is related to ball valve rod seal, especially
It is a kind of ball-valve valve rod filling pressure self sealing structure.
Background technology
At present, valve stem packing sealing is compressed using gland to filler, to reach sealing function.Prior art is deposited
Shortcoming mainly have at following 2 points：
(1) filler has abrasion in use, can cause seal failure and be filled out, it is necessary to tighten gland often and compress
Material；
(2) it is guarantee valve stem seal, it usually needs excessively tighten gland, this causes valve rod driving torque to increase, plus
Fast filler abrasion, Open valve is laborious.
Utility model content
The purpose of this utility model be to overcome in place of the deficiencies in the prior art there is provided one kind it is simple in construction, reasonable in design,
Reliability and durability ball-valve valve rod filling pressure self sealing structure.
The utility model solves its technical problem and takes following technical scheme to realize：
A kind of ball-valve valve rod filling pressure self sealing structure, including valve body, spheroid, valve rod, filler and self-fastening pressure are filled out
Expect spheroid is installed in gland, valve body, the lower end of valve rod is mounted in the spheroid, it is characterised in that：The mounting hole of stem lower portion
Lower end is fixed with an anti-attrition pad, and the spacing regulation of the stem outer circumference in mounting hole between anti-attrition pad and filler is provided with one
Individual self-fastening pressure filler pressing sleeve.
Moreover, the lower end of the self-fastening pressure filler pressing sleeve is formed with an internal projecting ring；In self-fastening pressure filler pressing sleeve installation position
Put the corresponding stem outer circumference in inner side and be formed with an outer bulge loop, the outer bulge loop limits the maximum position moved up of internal projecting ring.
Moreover, being machined with an O-ring groove respectively in the Nell wall of self-tightening filler pressing sleeve and outer wall, in O-ring groove
Equipped with an O-ring.
Moreover, pad is equipped with filler pad between the self-fastening pressure filler pressing sleeve and the axial end of filler.
Moreover, be equipped with filler in the middle part of valve rod in valve body mounting hole between periphery and valve body, above filler outside valve rod
A gland is set with, the gland periphery is provided with multiple screws and gland is fixed on valve body.
Moreover, the upper end of the valve rod is stretched out outside valve body through the made mounting hole of valve body, the valve stem end peace outside valve body
Fill handle.
Advantage of the present utility model and good effect are：
1st, this structure improves valve stem seal performance；Reduce and compress gland number of operations, safeguard convenient reliable, and
And, filler thrust size can be automatically adjusted according to pressure, moment of torsion is opened in reduction, increases filler service life.
2nd, one self-fastening pressure filler pressing sleeve of the utility model valve rod head position upside-down mounting, is processed on self-tightening filler pressing sleeve
Two O-ring grooves, groove promotes self-tightening filler pressing sleeve to press to filler pad built with O-ring, the pressure of valve internal medium, and then
Filler is compressed, the effect of pressure self-sealing is reached.Self-tightening sealing filler pressing sleeve can compensate for due to the filler that valve opening and closing is caused
Abrasion, is not required to adjustment gland and both can guarantee that valve stem seal, improve the reliability of valve seal.
Brief description of the drawings
Fig. 1 is cross section structure diagram of the present utility model；
Fig. 2 is the I portions partial enlarged drawing in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by specific embodiment, following examples are to retouch
The property stated, be not limited, it is impossible to limit protection domain of the present utility model with this.
A kind of ball-valve valve rod filling pressure self sealing structure, including valve body 11, spheroid 1, valve rod 2, filler 7 and pressure are certainly
Tight filler pressing sleeve 4, referring to shown in accompanying drawing 1, is provided with spheroid 1 in valve body 11, the lower end of valve rod 2, valve rod is mounted in the spheroid
Upper end stretched out through the made mounting hole of valve body outside valve body, the valve stem end outside valve body installs handle 9, handle drives valve rod from
And driving spheroid to rotate, spheroid is closure member.
Filler 7 is housed in the middle part of the valve rod in valve body mounting hole between periphery and valve body, is being set with above filler outside valve rod
One gland 8, the gland periphery is provided with multiple screws 10 and gland is fixed on valve body.
Innovative point of the present utility model is：
The mounting hole lower end of stem lower portion has been fixed with an anti-attrition pad 3, the mounting hole between anti-attrition pad and filler
Interior stem outer circumference enters equipped with a self-fastening pressure filler pressing sleeve 4, self-fastening pressure filler pressing sleeve between anti-attrition pad and filler
Row is spacing to be adjusted axially slip；
Pad is equipped with filler pad 6 between self-fastening pressure filler pressing sleeve and the axial end of filler, prevents self-fastening pressure filler
Gland directly extrudes filler.Self-tightening sealing filler pressing sleeve can compensate for, due to the filler abrasion that valve opening and closing is caused, being not required to adjustment
Gland both can guarantee that valve stem seal, improve the reliability of valve seal.
An O-ring groove is machined with respectively in the Nell wall of self-tightening filler pressing sleeve and outer wall, and one is respectively arranged with O-ring groove
O-ring, is sealed and the contact surface between valve body and valve rod respectively.The pressure of valve internal medium promotes self-tightening filler pressing sleeve to press to
Filler pad, and then filler is compressed, reach the effect of pressure self-sealing.
The lower end of the self-fastening pressure filler pressing sleeve is formed with an internal projecting ring；On the inside of self-fastening pressure filler pressing sleeve installation site
Corresponding stem outer circumference is formed between the axial end under an outer bulge loop, pressure-less state between the outer bulge loop and internal projecting ring leaves
Gap, when pressure medium promotes self-tightening filler pressing sleeve to be decompressed to filler pad, the maximum shifting of the outer bulge loop limitation internal projecting ring of valve rod
Dynamic position；Self-fastening pressure filler pressing sleeve loads in mounting hole on the inside of valve body, prevents self-fastening pressure filler when pressure medium is excessive
Gland flies out valve body, and then protects filler work safety.
Effect of the present utility model：
(1) increase pressure energized seal structure at valve rod, filler is compressed using pressure medium；
(2) upside-down mounting of self-fastening pressure device enters valve body, prevents the device from being flown out under pressure medium effect.
Although disclosing embodiment of the present utility model and accompanying drawing for the purpose of illustration, those skilled in the art can be with
Understand：Do not departing from the utility model and spirit and scope of the appended claims, it is various replace, change and modifications all be can
Can, therefore, scope of the present utility model is not limited to embodiment and accompanying drawing disclosure of that.
Claims (6)
1. a kind of ball-valve valve rod filling pressure self sealing structure, including valve body, spheroid, valve rod, filler and self-fastening pressure filler
Spheroid is installed in gland, valve body, the lower end of valve rod is mounted in the spheroid, it is characterised in that：Under the mounting hole of stem lower portion
End is fixed with an anti-attrition pad, and the spacing regulation of the stem outer circumference in mounting hole between anti-attrition pad and filler is provided with one
Self-fastening pressure filler pressing sleeve.
2. ball-valve valve rod filling pressure self sealing structure according to claim 1, it is characterised in that：The self-fastening pressure is filled out
The lower end of material gland is formed with an internal projecting ring；Corresponding stem outer circumference is formed with outside one on the inside of self-fastening pressure filler pressing sleeve installation site
Bulge loop, the outer bulge loop limits the maximum position moved up of internal projecting ring.
3. ball-valve valve rod filling pressure self sealing structure according to claim 1, it is characterised in that：In self-tightening filler pressing sleeve
Nell wall and outer wall be machined with an O-ring groove respectively, an O-ring is respectively arranged with O-ring groove.
4. ball-valve valve rod filling pressure self sealing structure according to claim 1, it is characterised in that：The self-fastening pressure is filled out
Expect that pad is equipped with filler pad between gland and the axial end of filler.
5. ball-valve valve rod filling pressure self sealing structure according to claim 1, it is characterised in that：In valve body mounting hole
Valve rod in the middle part of filler is housed between periphery and valve body, a gland is being set with above filler outside valve rod, the gland periphery is provided with
Gland is fixed on valve body by multiple screws.
6. ball-valve valve rod filling pressure self sealing structure according to claim 1, it is characterised in that：The upper end of the valve rod
Stretched out through the made mounting hole of valve body outside valve body, the valve stem end outside valve body installs handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348270.2U CN206361248U (en) | 2016-12-09 | 2016-12-09 | A kind of ball-valve valve rod filling pressure self sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348270.2U CN206361248U (en) | 2016-12-09 | 2016-12-09 | A kind of ball-valve valve rod filling pressure self sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206361248U true CN206361248U (en) | 2017-07-28 |
Family
ID=59374242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621348270.2U Active CN206361248U (en) | 2016-12-09 | 2016-12-09 | A kind of ball-valve valve rod filling pressure self sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206361248U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566679A (en) * | 2019-09-24 | 2019-12-13 | 张家港富瑞阀门有限公司 | Stop valve for hydrogen |
| CN111692368A (en) * | 2020-06-16 | 2020-09-22 | 四川弗洛威流体控制设备有限公司 | Electric vacuum ball valve |
| CN117889261A (en) * | 2024-02-26 | 2024-04-16 | 苏州纽威阀门股份有限公司 | A valve stem sealing structure and valve |
-
2016
- 2016-12-09 CN CN201621348270.2U patent/CN206361248U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566679A (en) * | 2019-09-24 | 2019-12-13 | 张家港富瑞阀门有限公司 | Stop valve for hydrogen |
| CN111692368A (en) * | 2020-06-16 | 2020-09-22 | 四川弗洛威流体控制设备有限公司 | Electric vacuum ball valve |
| CN117889261A (en) * | 2024-02-26 | 2024-04-16 | 苏州纽威阀门股份有限公司 | A valve stem sealing structure and valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |