CN206398174U - A kind of low friction, dual-seal valve rod structure - Google Patents
A kind of low friction, dual-seal valve rod structure Download PDFInfo
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- CN206398174U CN206398174U CN201621348439.4U CN201621348439U CN206398174U CN 206398174 U CN206398174 U CN 206398174U CN 201621348439 U CN201621348439 U CN 201621348439U CN 206398174 U CN206398174 U CN 206398174U
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- valve rod
- valve body
- valve
- spheroid
- dual
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Abstract
The utility model is related to a kind of low friction, dual-seal valve rod structure, is provided with spheroid in made medium channel in valve body, and spheroid upper end is coaxially installed with valve rod, and valve rod upper end is coaxially installed in the made valve body inner bore of valve body；Stem outer circumference in the valve body inner bore of stem outer circumference on the outside of valve body is filled with filler, and a gland is pressed with the valve body of the filler upper end, and a sealing wearing ring is provided between the contact site between the stem lower portion periphery of valve inner and valve body；Valve rod head diameter in valve body is more than the main diameter of valve rod, and the valve rod head between the head of valve rod and shaft is cylindrical to be formed with circular conical surface, and the inner circle of sealing wearing ring is processed as the circular conical surface matched with valve rod head circular conical surface.The utility model reduces valve rod operation moment of torsion, valve rod is had dual-seal, seals more reliable.In the presence of the first resealing, protect valve stem packing from pressure medium, improve filler service life.
Description
Technical field
The utility model belongs to oil, petrochemical industry oil transportation, gas pipeline valve field, is related to ball valve rod seal, especially
A kind of low friction, dual-seal valve rod structure.
Background technology
At present, the valve rod of prior art uses inverted structure, and surface spraying PTFE (polytetrafluoros are placed between head and valve body
Ethene) anti-attrition pad, play a part of reduce friction.Have the following disadvantages：(1) anti-attrition pad surface spraying PTFE thickness is very
Small, anti-attrition pad Friction-Reducing Coating service life is low, and be worn failure quickly during controlled valve, causes switch torque to become big；
(2) valve rod is sealed merely by filler list, and reliability is low.
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 low friction, dual-seal valve rod structure.
The utility model solves its technical problem and takes following technical scheme to realize：
A kind of low friction, dual-seal valve rod structure, including spheroid, valve rod, sealing wearing ring, valve body, filler and fill out
Expect gland, spheroid is installed in valve body, spheroid upper end is coaxially installed with valve rod, and valve rod upper end is coaxial in made medium channel
It is installed in the made valve body inner bore of valve body；Stem outer circumference in the valve body inner bore of stem outer circumference on the outside of valve body is filled with
A gland is pressed with material, the valve body of the filler upper end, it is characterised in that：In the stem lower portion periphery of valve inner and valve
One sealing wearing ring is installed between the contact site between body；The main body that valve rod head diameter in valve body is more than valve rod is straight
Footpath, valve rod head between the head of valve rod and shaft is cylindrical to be formed with circular conical surface, and the inner circle of sealing wearing ring is processed as and valve rod
The circular conical surface that head circular conical surface matches.
Moreover, the valve rod upper end outside valve body is fixed with one handle, handle control valve rod is rotated, and then drives spheroid
Rotated, spheroid is closure member.
Moreover, the sealing wearing ring is made up of reinforced TFE, sealing wearing ring and valve body inner bore formation interference
Coordinate.
Advantage of the present utility model and good effect are：
The utility model reduces valve rod operation moment of torsion, valve rod is had dual-seal, seals more reliable.It is close in the first weight
In the presence of envelope, protect valve stem packing from pressure medium, improve filler service life.
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 low friction, dual-seal valve rod structure, including spheroid 1, valve rod 2, sealing wearing ring 3, valve body 4, filler 5,
Gland 6, handle 7, are provided with spheroid in valve body in made medium channel, spheroid upper end is coaxially installed with valve rod, valve
Bar upper end is coaxially installed in the made valve body inner bore of valve body, and the valve rod upper end outside valve body is fixed with one handle, passes through driving
The handle can control valve rod to rotate, and then drive spheroid to be rotated, and spheroid is closure member；
In order to ensure sealing between valve rod and valve body, outside the valve rod in the valve body inner bore of the stem outer circumference on the outside of valve body
It is filled with filler 5 week, a gland 6 is pressed with the valve body of the filler upper end, the gland is packed in valve by screw
On body, packing seal is fixed, it is ensured that the sealing between valve rod and valve body.
Innovative point of the present utility model is：
One sealing wearing ring 3 is installed between the contact site between the stem lower portion periphery of valve inner and valve body to drop
Low valve opening and closing moment of friction, the sealing wearing ring is made up of low-friction material RPTFE (reinforced TFE), and intensity is high,
Wearability is good, and coefficient of friction is small, and valve opening and closing torque is low, good seal performance.During installation, the sealing wearing ring is pressed into valve body
Inside, is allowed to be interference fitted with valve body inner bore formation, the sealing formed between anti-attrition sealing ring and valve body.
Referring to shown in accompanying drawing 2, the diameter of valve rod head 8 in valve body is more than the main diameter of valve rod 2, the head of valve rod and bar
Valve rod head between body is cylindrical to be formed with the circular conical surface 9 seamlessly transitted, and the inner circle of sealing wearing ring is processed as and valve rod head is justified
The circular conical surface that the conical surface matches, so that the effective sealing formed between anti-attrition sealing ring and valve rod.Valve rod is acted in pressure medium
Under press to sealing wearing ring, valve rod head, valve body and sealing wearing ring between formed seal, with packing seal collective effect shape
Into dual-seal, sealed reliable degree is high.
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 (3)
1. a kind of low friction, dual-seal valve rod structure, including spheroid, valve rod, sealing wearing ring, valve body, filler and filler
Gland, is provided with spheroid in valve body in made medium channel, spheroid upper end is coaxially installed with valve rod, and valve rod upper end is coaxially worn
In the made valve body inner bore of valve body；Stem outer circumference in the valve body inner bore of stem outer circumference on the outside of valve body is filled with filler,
A gland is pressed with the valve body of the filler upper end, it is characterised in that：In the stem lower portion periphery of valve inner and valve body
Between contact site between a sealing wearing ring is installed；Valve rod head diameter in valve body is more than the main diameter of valve rod,
Valve rod head between the head of valve rod and shaft is cylindrical to be formed with circular conical surface, and the inner circle of sealing wearing ring is processed as and valve rod head
The circular conical surface that circular conical surface matches.
2. low friction according to claim 1, dual-seal valve rod structure, it is characterised in that：Valve rod outside valve body
Upper end is fixed with one handle, and handle control valve rod is rotated, and then drives spheroid to be rotated, and spheroid is closure member.
3. low friction according to claim 1, dual-seal valve rod structure, it is characterised in that：It is described sealing wearing ring by
Reinforced TFE is made, and sealing wearing ring is interference fitted with valve body inner bore formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348439.4U CN206398174U (en) | 2016-12-09 | 2016-12-09 | A kind of low friction, dual-seal valve rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621348439.4U CN206398174U (en) | 2016-12-09 | 2016-12-09 | A kind of low friction, dual-seal valve rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206398174U true CN206398174U (en) | 2017-08-11 |
Family
ID=59510354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621348439.4U Active CN206398174U (en) | 2016-12-09 | 2016-12-09 | A kind of low friction, dual-seal valve rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206398174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327626A (en) * | 2017-08-31 | 2017-11-07 | 天津包博特密封科技有限公司 | A kind of high leakproofness valve rod |
-
2016
- 2016-12-09 CN CN201621348439.4U patent/CN206398174U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327626A (en) * | 2017-08-31 | 2017-11-07 | 天津包博特密封科技有限公司 | A kind of high leakproofness valve rod |
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