CN201401529Y - Fixed ball lower valve stem structure - Google Patents
Fixed ball lower valve stem structure Download PDFInfo
- Publication number
- CN201401529Y CN201401529Y CN2009201167251U CN200920116725U CN201401529Y CN 201401529 Y CN201401529 Y CN 201401529Y CN 2009201167251 U CN2009201167251 U CN 2009201167251U CN 200920116725 U CN200920116725 U CN 200920116725U CN 201401529 Y CN201401529 Y CN 201401529Y
- Authority
- CN
- China
- Prior art keywords
- lower valve
- valve stem
- valve rod
- bottom cover
- fixed ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a fixed ball lower valve stem structure, which aims to overcome shortages of the prior art and provide a fixed ball lower valve stem structure capable of being on-line regulated and having flexible rotation and high wear resistance. The technical key points include two technical schemes. The scheme I includes that the fixed ball lower valve stem structure comprises a steel ball (1), a valve body (4) and a lower valve stem (2), wherein a bottom end cover (7) is fixed below the valve body, and the fixed ball lower valve stem structure is characterized in that a contact spherical surface (6) is arranged below the lower valve stem (2), a sealing ring (3) is sleeved outside the lower valve stem, and a regulating spacer (11) is mounted between the contact spherical surface (6) and the bottom end cover (7). The scheme II includes that a contact spherical surface is arranged below the lower valve stem, a lower valve stem sealer is mounted between the contact spherical surface and the bottom end cover, and a sealing ring (3) is sleeved outside the lower valve stem sealer (8).
Description
Technical field
The utility model relates to a kind of fixedly spherical ball valve, especially a kind of fixedly ball lower valve rod structure.
Background technique
Concerning fixing spherical ball valve, the lower valve rod structure is one of constituent element important in the ball-valve structure, because spheroid fixes by lower valve rod, the weight of whole spheroid is born by lower valve rod fully, fixedly the ball bore is big more, the weight of spheroid is just big more, and is also just high more to the requirement of lower valve rod so.
For present traditional fixing ball valve, the weight of steel ball acts directly on the adjustment pad of lower valve rod lower end, and surface of contact is that the plane is that rotary part is big plane, thereby causes keying torsion big, runs counter to energy conservation; Owing to adjust in service can not the replacing of pad start, but the wearing and tearing of adjusting pad cause steel ball central position " sinking " and depart from the origin-location, thereby cause the seal failure between valve seat and the spheroid and leak; If it is in service at valve, when wearing and tearing owing to spacer occurring and causing seal failure between valve seat and the spheroid, with regard to the spacer that needs more renew timely, this need stop the operation of pipeline medium, take the bottom of ball valve body apart and finish, but because the needs of enterprise and technology, traditional fixedly spherical ball valve can not be accomplished to stop at once, can't carry out any on-the-spot on-call maintenance measure, thereby bring big hidden danger for the safe operation of pipeline.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, provides a kind of rotation flexible, and abrasion resistance is higher, fixedly ball lower valve rod structure that can online adjusting.
The utility model solves the technological scheme that its technical problem adopts:
Scheme one, this fixedly ball lower valve rod structure comprises steel ball, valve body, lower valve rod, bottom cover by screw below valve body, described lower valve rod has the contact sphere, and the described lower valve rod outside is with seal ring, between contact sphere and the bottom cover adjustment pad is housed.
Scheme two comprises steel ball, valve body, lower valve rod, and bottom cover, be is characterized in that below valve body by screw: described lower valve rod has the contact sphere, between contact sphere and the bottom cover lower stem seal body is housed; The external side of lower stem seal is with seal ring.
As preferably, adjusting screw and lock nut are housed on the described bottom cover.
As preferably, adjusting screw on the described bottom cover and lock nut are evenly equipped with three to six pairs.
The effect that the utility model is useful is: one, sphere contact, play the effect of bearing, and reduced the moment of torsion that friction has just alleviated valve, make and rotate flexibly, as adopt automatic control more can save the driving cost; Two, adopt full-metallic part lower stem seal body, improve abrasion resistance; Three, can under valve operation, adjust, spheroid is determined easily an accurate and stable position, thereby in time, effectively valve is safeguarded, potential safety hazard be reduced to minimum.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the utility model embodiment 2 a structural representation;
Fig. 3 is embodiment 3 a partial schematic diagram;
Fig. 4 is that the A of Fig. 3 is to schematic representation.
Description of reference numerals: steel ball 1, lower valve rod 2, seal ring 3, valve body 4, screw 5, contact sphere 6, bottom cover 7, lower stem seal body 8, adjusting screw 9, lock nut 10 is adjusted pad 11.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Embodiment 1: as Fig. 1, fixedly the structure of ball lower valve rod structure comprises steel ball 1, the weight of steel ball 1 is pressed on the lower valve rod 2, lower valve rod 2 lower ends are enclosed within the valve body 4, bottom cover 7 is fixed on valve body 4 belows by screw 5, lower valve rod 2 outsides are with seal ring 3, lower valve rod 2 has contact sphere 6, be to adjust pad 11 between contact sphere 6 and the bottom cover 7, contact sphere 6 has effectively reduced frictional force, reduces opening and closing torsion, makes and rotates flexibly, adjust pad 11 and can after machine shuts down, change adjustment, to guarantee the stable of steel ball 1 position.
Embodiment 2: as Fig. 2, between contact sphere 6 and the bottom cover 7 lower stem seal body 8 is housed, improved abrasion resistance, seal ring 3 is sleeved on the outside of lower stem seal body 8, one secondary adjusting screw 9 and lock nut 10 is housed on the bottom cover 7, can under the valve operation, adjust and determine to have reduced the potential safety hazard of valve in an accurate and stable position with assurance steel ball 1.
Embodiment 3: for being evenly equipped with three secondary adjusting screw 9 and lock nuts 10 on the bigger bottom cover 7 of diameter.See Fig. 3, Fig. 4.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1, a kind of fixedly ball lower valve rod structure, comprise steel ball (1), valve body (4), lower valve rod (2), bottom cover (7) is fixed on valve body (4) below by screw (5), it is characterized in that: described lower valve rod (2) has contact sphere (6), the described lower valve rod outside is with seal ring (3), is equipped with between contact sphere (6) and the bottom cover (7) and adjusts pad (11).
2, a kind of fixedly ball lower valve rod structure, comprise steel ball (1), valve body (4), lower valve rod (2), bottom cover (7) is fixed on valve body (4) below by screw (5), it is characterized in that: described lower valve rod (2) has contact sphere (6), between contact sphere (6) and the bottom cover (7) lower stem seal body (8) is housed; Lower stem seal body (8) outside is with seal ring (3).
3, fixedly ball lower valve rod structure according to claim 2 is characterized in that: adjusting screw (9) and lock nut (10) are housed on the described bottom cover (7).
4, fixedly ball lower valve rod structure according to claim 3 is characterized in that: adjusting screw (9) and lock nut (10) on the described bottom cover (7) are evenly equipped with three to six pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201167251U CN201401529Y (en) | 2009-03-27 | 2009-03-27 | Fixed ball lower valve stem structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201167251U CN201401529Y (en) | 2009-03-27 | 2009-03-27 | Fixed ball lower valve stem structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201401529Y true CN201401529Y (en) | 2010-02-10 |
Family
ID=41661326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201167251U Expired - Fee Related CN201401529Y (en) | 2009-03-27 | 2009-03-27 | Fixed ball lower valve stem structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201401529Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676036A (en) * | 2015-02-09 | 2015-06-03 | 天津百利展发集团有限公司 | Antifriction adjustable ball valve fixed shaft structure |
| CN105387222A (en) * | 2015-12-16 | 2016-03-09 | 江苏神通阀门股份有限公司 | Limiting structure for a valve rod |
| CN106763823A (en) * | 2016-12-16 | 2017-05-31 | 安徽铜都流体科技股份有限公司 | The double scraper two-way hard seal spiral valves of piston type |
| CN112145713A (en) * | 2020-09-10 | 2020-12-29 | 耐氟隆集团有限公司 | Zero-leakage high-performance fluorine-lined butterfly valve |
-
2009
- 2009-03-27 CN CN2009201167251U patent/CN201401529Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676036A (en) * | 2015-02-09 | 2015-06-03 | 天津百利展发集团有限公司 | Antifriction adjustable ball valve fixed shaft structure |
| CN104676036B (en) * | 2015-02-09 | 2017-07-28 | 天津百利展发集团有限公司 | The adjustable ball valve fixed axle structure of anti-attrition |
| CN105387222A (en) * | 2015-12-16 | 2016-03-09 | 江苏神通阀门股份有限公司 | Limiting structure for a valve rod |
| CN106763823A (en) * | 2016-12-16 | 2017-05-31 | 安徽铜都流体科技股份有限公司 | The double scraper two-way hard seal spiral valves of piston type |
| CN112145713A (en) * | 2020-09-10 | 2020-12-29 | 耐氟隆集团有限公司 | Zero-leakage high-performance fluorine-lined butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100210 Termination date: 20160327 |