CN202252092U - Ball valve provided with double radial bearing valve rod - Google Patents
Ball valve provided with double radial bearing valve rod Download PDFInfo
- Publication number
- CN202252092U CN202252092U CN2011203090637U CN201120309063U CN202252092U CN 202252092 U CN202252092 U CN 202252092U CN 2011203090637 U CN2011203090637 U CN 2011203090637U CN 201120309063 U CN201120309063 U CN 201120309063U CN 202252092 U CN202252092 U CN 202252092U
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- Prior art keywords
- valve rod
- valve
- filler
- radial bearing
- packing
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- 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 ball valve provided with a double radial bearing valve rod. The ball valve comprises a valve body, a packing gland, a valve rod and packing, wherein the packing gland comprises a cover plate and a grille, a packing box and a groove are arranged on the valve body, the grille is inserted into the packing box, the lower part of the valve rod is connected with the valve body, the upper part of the valve rod extends out of the packing gland after penetrating through the groove, the packing box and the grille in sequence; and the valve rod, the packing box and the grille form an annular packing cavity; and the ball valve also comprises a first radial bearing of the valve rod, a second radial bearing of the valve rod and two packing gaskets, wherein the radial bearing of the first valve rod is sleeved between the grille and the valve rod, the second radial bearing of the valve rod is sleeved between the groove and the valve rod, one packing gasket is arranged at the top of the annular packing cavity, and the other packing gasket is arranged at the bottom of the annular packing cavity. Compared with the prior art, the ball valve has the advantages of preventing the valve rod from radial deflection, seizure and pressure friction with the packing and preventing the packing and the packing gaskets from leaking medium etc.
Description
Technical field
The utility model relates to a kind of ball valve, especially relates to a kind of ball valve that has biradial bearing valve rod.
Background technique
In ball valve production at present and the design, many employing Gland formula valves mainly are made up of valve body 2, Gland 3, valve rod 4 and filler 1.These Gland formula valves compress filler at the Gland bolt of locking; And Gland endoporus and valve rod external diameter and valve body stuffing hole all leave the gap; Valve rod just might rotate and be unlikely locked like this, and the bolt hole on the Gland and bolt are also gapped.And valve rod is also excessive in the gap of filler bottom.
The valve of these structures lacks the radial location structure of Gland and bottom, and in assembly process, Gland is easy to take place radial deflection, with the valve rod friction, thereby has increased the opening and closing moment of torsion, and also leak easily at the filler place.
The model utility content
The purpose of the utility model is exactly to provide a kind of valve rod radial deflection, quilt of preventing to be killed, rub with the filler pressure sensitivity for the defective that overcomes above-mentioned existing technology existence, also can prevent the ball valve that has biradial bearing valve rod of the dielectric leakage of filler and filler pad.
The purpose of the utility model can realize through following technological scheme: a kind of ball valve that has biradial bearing valve rod, and this ball valve comprises valve body, Gland, valve rod and filler, described Gland comprises cover plate and Ge Nan; The integral type setting of cover plate dative south has filler and contains on the described valve body, this filler is contained the bottom and had internal diameter is contained internal diameter less than filler groove; The filler culvert is inserted in described lattice south, and cover plate is connected through fastening piece with valve body, and the bottom of described valve rod is connected with valve body; The top of valve rod passes successively that groove, filler are contained, lattice pass Gland behind the south; Described valve rod, filler are contained, lattice south surrounds a ring packing chamber, and described filler is filled in the ring packing chamber, it is characterized in that; Described ball valve also comprises the first valve rod radial bearing, the second valve rod radial bearing and filler pad; The described first valve rod radial bearing is enclosed between Ge Nan and the valve rod, and the described second valve rod radial bearing is enclosed between groove and the valve rod, and described filler pad is provided with two; One is located at the ring packing top of chamber, and another is located at bottom, ring packing chamber.
Described fastening piece is bolt or flange.
Described filler pad is the metallic stuffing pad.
The described first valve rod radial bearing and the second valve rod radial bearing are processed by polytetrafluoroethylene (PTFE), soluble tetrafluoroethylene (PFA), 50%SS316 stainless steel or wear-resisting lubricated metal.
Described filler is teflon or soluble tetrafluoroethylene or graphite.
Compared with prior art, the utlity model has following advantage:
One, the upper and lower end face of filler is equipped with the filler pad, and when valve body and valve lever clearance were excessive, the filler pad can prevent that filler is owing to squeezing action enters into the gap between valve rod and the valve body.
Two, the internal diameter of the step hole of the external diameter of the first valve rod radial bearing and Gland movingly, the internal diameter of the first valve rod radial bearing and valve rod are movingly.Between the first valve rod radial bearing and step hole and the valve rod all for movingly, when preventing the valve rod radial deflection, be unlikely also that valve rod is killed or with the Gland friction.
Three, the outside of the second valve rod radial bearing and valve body are movingly; The inner face of the second valve rod radial bearing and valve rod are movingly; All for movingly, when preventing the valve rod radial deflection, also be unlikely valve rod and killed between the second valve rod radial bearing and valve body and the valve rod.
Four, the first valve rod radial bearing and the second valve rod radial bearing are processed by teflon or soluble tetrafluoroethylene.Teflon or soluble tetrafluoroethylene have toughness and the little characteristic of rub resistance coefficient all as the preferred material of valve packing.Application according to valve is different, and the filling material of selecting for use also can be different.
Five, the stuffing hole Spielpassung of Gland and valve body, monolateral gap is between 0.1～0.15mm.
Six, have the effect that well prevents the valve rod radial deflection, adopt the filler pad also can prevent the dielectric leakage of filler and filler pad simultaneously.
Description of drawings
Fig. 1 is the structural representation of traditional Gland formula valve;
Fig. 2 is the structural representation of the utility model.
1 is that filler, 2 is that valve body, 3 is that Gland, 4 is valve rod among Fig. 1;
21 is that the second valve rod radial bearing, 22 is that filler, 23 is that valve body, 24 is that filler pad, 25 is that the first valve rod radial bearing, 26 is that Gland, 27 is that fastening piece, 28 is a valve rod among Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 2, a kind of ball valve that has biradial bearing valve rod, this ball valve comprise valve body 23, Gland 26, valve rod 28, filler 22, the first valve rod radial bearing 25, the second valve rod radial bearing 21 and filler pad 24.Gland 26 comprises cover plate and Ge Nan, and the integral type setting of cover plate dative south has filler and contains on the valve body, and this filler is contained the bottom and had internal diameter is contained internal diameter less than filler groove.The filler culvert is inserted in lattice south, and cover plate is connected through fastening piece 27 with valve body 23.The bottom of valve rod 28 is connected with valve body 23, and the top of valve rod 28 passes Gland 26 after passing groove, filler culvert, lattice south successively, and valve rod 28, filler are contained, lattice south surrounds a ring packing chamber, and filler 22 is filled in the ring packing chamber.The first valve rod radial bearing 25 is enclosed between Ge Nan and the valve rod 28, and the second valve rod radial bearing 21 is enclosed between groove and the valve rod 28, and filler pad 24 is provided with two, and one is located at the ring packing top of chamber, and another is located at bottom, ring packing chamber.Fastening piece is bolt or flange, and present embodiment is selected bolt for use.The filler pad is the metallic stuffing pad.The first valve rod radial bearing is processed by polytetrafluoroethylene (PTFE), soluble tetrafluoroethylene (PFA), 50%SS316 stainless steel or wear-resisting lubricated metal.The second valve rod radial bearing is processed by teflon or soluble tetrafluoroethylene.Filler is teflon, soluble tetrafluoroethylene or graphite.
Gland is fixed through fastening piece and valve body, is provided with filler between valve body and the valve rod.Valve rod is provided with the first valve rod radial bearing and the second valve rod radial bearing outward, is provided with the step hole that cooperates with the first valve rod radial bearing in the Gland, is provided with the filler pad between the first valve rod radial bearing and the filler.Fastening piece can also can be other fastening pieces such as flange for bolt.The valve rod hole place of Gland increases a step hole, with thin flexible and little external diameter cooperates internal diameter to cooperate with valve rod with step hole the first valve rod radial bearing of material (such as 50%SS+PTFE or TFM1600) design of rub resistance coefficient.For preventing that the filler stress deformation from pushing the first valve rod radial bearing, increase a metallic stuffing pad respectively in the top and the bottom of filler.
The increase of the utility model ball valve has two valve rod radial bearings; The first valve rod radial bearing is engaged between Gland and the valve rod upper end; The second valve rod radial bearing (double L-shaped 50%SS+PTFE or TFM1600) structural member is engaged between valve rod lower end and the valve body, guarantees that radial deflection does not take place at the two ends up and down of valve rod.
Working principle: ball valve changes and originally directly to compress filler at the gland bolt of locking; And Gland endoporus and valve rod external diameter and valve body stuffing hole all leave the gap; Valve rod for be unlikely to locked and valve body between also leave problems such as gap; Between valve rod and Gland, valve rod and valve body, be equipped with the valve rod radial bearing, guarantee cooperating between valve rod and Gland, valve body like this, guaranteed that also radial deflection does not take place valve rod; Increase the metallic stuffing pad in addition, also can prevent the leakage of filler.
Claims (5)
1. ball valve that has biradial bearing valve rod, this ball valve comprises valve body, Gland, valve rod and filler, described Gland comprises cover plate and Ge Nan; The integral type setting of cover plate dative south has filler and contains on the described valve body, this filler is contained the bottom and had internal diameter is contained internal diameter less than filler groove; The filler culvert is inserted in described lattice south, and cover plate is connected through fastening piece with valve body, and the bottom of described valve rod is connected with valve body; The top of valve rod passes successively that groove, filler are contained, lattice pass Gland behind the south; Described valve rod, filler are contained, lattice south surrounds a ring packing chamber, and described filler is filled in the ring packing chamber, it is characterized in that; Described ball valve also comprises the first valve rod radial bearing, the second valve rod radial bearing and filler pad; The described first valve rod radial bearing is enclosed between Ge Nan and the valve rod, and the described second valve rod radial bearing is enclosed between groove and the valve rod, and described filler pad is provided with two; One is located at the ring packing top of chamber, and another is located at bottom, ring packing chamber.
2. a kind of ball valve that has biradial bearing valve rod according to claim 1 is characterized in that described fastening piece is bolt or flange.
3. a kind of ball valve that has biradial bearing valve rod according to claim 1 is characterized in that described filler pad is the metallic stuffing pad.
4. a kind of ball valve that has biradial bearing valve rod according to claim 1; It is characterized in that the described first valve rod radial bearing and the second valve rod radial bearing be the bearing for being processed by teflon, soluble tetrafluoroethylene or wear-resisting lubricated metal all.
5. a kind of ball valve that has biradial bearing valve rod according to claim 1 is characterized in that, described filler is teflon, soluble tetrafluoroethylene or graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203090637U CN202252092U (en) | 2011-08-23 | 2011-08-23 | Ball valve provided with double radial bearing valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203090637U CN202252092U (en) | 2011-08-23 | 2011-08-23 | Ball valve provided with double radial bearing valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252092U true CN202252092U (en) | 2012-05-30 |
Family
ID=46113335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203090637U Expired - Fee Related CN202252092U (en) | 2011-08-23 | 2011-08-23 | Ball valve provided with double radial bearing valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252092U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671549A (en) * | 2013-12-13 | 2014-03-26 | 济南玫德铸造有限公司 | Bearing sleeve of directional hydraulic control valve |
| CN107191616A (en) * | 2017-06-16 | 2017-09-22 | 无锡斯考尔自动控制设备有限公司 | A kind of super-pressure metal seal ball valve |
| CN108361436A (en) * | 2018-02-24 | 2018-08-03 | 江苏亿阀股份有限公司 | A kind of valve stem packing sealing mechanism |
| CN108591600A (en) * | 2018-06-20 | 2018-09-28 | 武汉汉德阀门股份有限公司 | A kind of valve rod leak-proof structure |
-
2011
- 2011-08-23 CN CN2011203090637U patent/CN202252092U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671549A (en) * | 2013-12-13 | 2014-03-26 | 济南玫德铸造有限公司 | Bearing sleeve of directional hydraulic control valve |
| CN103671549B (en) * | 2013-12-13 | 2016-06-08 | 济南玫德铸造有限公司 | The bearing housing of directional hydraulic control valve |
| CN107191616A (en) * | 2017-06-16 | 2017-09-22 | 无锡斯考尔自动控制设备有限公司 | A kind of super-pressure metal seal ball valve |
| CN108361436A (en) * | 2018-02-24 | 2018-08-03 | 江苏亿阀股份有限公司 | A kind of valve stem packing sealing mechanism |
| CN108591600A (en) * | 2018-06-20 | 2018-09-28 | 武汉汉德阀门股份有限公司 | A kind of 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140823 |
|
| EXPY | Termination of patent right or utility model |