CN202521045U - Valve rod sealing mechanism for floating ball valve - Google Patents
Valve rod sealing mechanism for floating ball valve Download PDFInfo
- Publication number
- CN202521045U CN202521045U CN2012201789232U CN201220178923U CN202521045U CN 202521045 U CN202521045 U CN 202521045U CN 2012201789232 U CN2012201789232 U CN 2012201789232U CN 201220178923 U CN201220178923 U CN 201220178923U CN 202521045 U CN202521045 U CN 202521045U
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- cover plate
- valve
- gland
- valve body
- cavity
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- Expired - Fee Related
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Abstract
The utility model discloses a valve rod sealing mechanism for a floating ball valve. The valve rod sealing mechanism comprises a valve body, a valve rod and a packing gland, wherein packing which is hermetically matched with the valve rod is arranged on the valve rod, the packing gland comprises a cover plate, a pressure part is arranged at the lower end of the cover plate, the pressure part pushes against the packing, a concave cavity matched with the packing gland is arranged on the valve body, the cover plate and the pressure part are embedded in the concave cavity, and the packing gland is fixedly connected with the valve body through a locking device. The valve rod sealing mechanism disclosed by the utility model has the advantages of simple structure, compact matching and simple and beautiful appearance.
Description
Technical field
The utility model relates to a kind of sealing mechanism, especially a kind of valve stem seal mechanism that is used for floating ball valve.
Background technique
The valve rod of general floating ball valve all is provided with sealing mechanism to prevent the leak of liquid of valve inner; Sealing mechanism comprises valve body, valve rod and Gland; Valve rod radially is provided with the filler of annular, and valve rod places in the valve body, and the valve body madial wall is provided with the stuffing box that cooperates with filler.Gland comprises cover plate and splenium, and both are wholely set, and the splenium roof pressure filler.Splenium is embedded in the valve body and cover plate is exposed at the valve body outside.Because above-mentioned the setting need make valve body be connected with worm gear through support, through coupling lever valve rod is connected with worm gear, causes the complicated integral structure of floating ball valve, volume is big, connects problems such as instability.
The model utility content
In order to overcome the deficiency of existing technology, the utility model provides a kind of and has closely cooperated, connected stable, as to make the succinct floating ball valve of floating ball valve overall appearance valve stem seal mechanism than existing technology structure.
To achieve these goals, the technological scheme of the utility model employing is: comprise valve body, valve rod and Gland, valve body is provided with the through hole that cooperates with valve rod; Through-hole wall is provided with stuffing box, is provided with the filler that cooperates with valve stem seal in the stuffing box, and Gland comprises cover plate; The cover plate lower end is provided with splenium; The splenium roof pressure filler, it is characterized in that: the top of stuffing box is provided with the cavity that cooperates with Gland on the said valve body, and cover plate and splenium all are embedded in the cavity; Cover plate is concordant with the cavity opening, and said Gland is provided with locking device.In above-mentioned the setting; When selecting the operator of the preferred outside of worm gear conduct; Valve rod directly is connected with worm gear; Valve body directly is connected with worm gear, has reduced parts such as coupling lever, support, and structure is simpler, overall volume is littler, cooperation and the cooperation between valve rod and the worm gear between valve body and the worm gear are all more directly tightr.Have suffered Gland and sink in the valve body, cover plate is concordant with the opening of the cavity of valve body, forms a smooth plane, and is more succinctly beautiful in appearance.
Further setting as the utility model: the cross section of said Gland becomes the setting of T shape structure; The horizontal part of said Gland is a cover plate; The vertical portion of Gland is a splenium; Said locking device is located on the cover plate, is provided with the gland hole that supplies valve rod to pass in the middle of the said splenium, and the gland hole penetrates cover plate.Above-mentioned setting makes the compressing property of Gland stronger.
Further setting as the utility model: said locking device comprises the fixed hole of being located at the cover plate two ends, is provided with bolt in the fixed hole, and bolt passes fixed hole and is threaded with valve body.Through bolt Gland is fixedly connected on the valve body in above-mentioned the setting, makes Gland stronger to the compressing property of filler, formation is sealed and matched more closely.
Further setting as the utility model: the radial end face of said fixed hole is for being horizontally disposed with, and the cross section of said cavity becomes stepped setting, and said bolt passes fixed hole and is threaded with the interior ladder surface of cavity.The radial end face of fixed hole is and is horizontally disposed with, and more fits with the ladder surface in the cavity, connects tightr.
Further setting as the utility model: said cover plate is a round structure, and cavity and cover plate on the said valve body are equipped with.The more convenient processing casting of the cover plate of round structure reduces processing cost.
Adopt such scheme, this Gland is whole to be embedded in the valve body, and with the cavity Spielpassung in the valve body, the cover plate top flushes with the opening of cavity, and is succinctly beautiful in appearance.And because this setting can make valve rod directly be connected with outside worm gear operator; Reduced the connection of coupling lever; In addition, this setting can directly directly be connected valve body with outside worm gear, reduced the connection of support; The structure of whole floating ball valve is become connect between simpler, the parts heel spare more stable, compacter in the cooperation.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Accompanying drawing 1 is the utility model specific embodiment 1 section of structure;
Accompanying drawing 2 is the utility model specific embodiment 1 part-structure plan view;
Accompanying drawing 3 is the utility model specific embodiment 1 partial enlarged drawing;
Accompanying drawing 4 is the utility model specific embodiment 2 section of structures.
Embodiment
For example shown in Fig. 1-3, the valve stem seal mechanism that is used for floating ball valve comprises valve body 1, valve rod 2 and Gland 3 in the practical implementation of the utility model.Valve rod 2 places in the valve body 1, and valve rod 2 radially is provided with the ring packing 4 that is sealed and matched with it, and valve body 1 is provided with the ring packing letter that cooperates with ring packing 4.Gland 3 comprises circular cover plate 31, and cover plate 31 bottoms are provided with columniform splenium 32, and these splenium 32 roof pressures filler 4.Be provided with the gland hole 32a that supplies valve rod 2 to pass in the middle of the splenium 32, gland hole 32a penetrates cover plate 31.As shown in Figure 1, this specific embodiment 1 adopts handle 6 as the peripheral operation device, and valve rod 2 passes gland hole 32a and is connected with handle 6.As shown in Figure 4, this specific embodiment 2 adopts worm gear 7 as the peripheral operation device, and worm gear 7 is fixed on valve body 1 top, and valve rod 2 passes gland hole 32a and is connected with worm gear 7.Valve body 1 is provided with the cavity 11 that cooperates with Gland 3, and cover plate 31 all is embedded in the cavity 11 with splenium 32, and cover plate 31 is concordant with cavity 11 openings, and this Gland 3 is provided with locking device 5.
The cross section of Gland 3 becomes the setting of T shape structure, and horizontal part is a cover plate 31, and vertically portion is a splenium 32.Locking device 5 comprises the fixed hole of being located at cover plate 31 two ends, is provided with bolt 311 in the fixed hole, and bolt 311 passes fixed hole and is fixedly connected with valve body 1.The radial end face of this fixed hole is for being horizontally disposed with, and the cross section of the cavity 11 in the valve body 1 becomes stepped setting, and this ladder surface also for being horizontally disposed with, cooperates with the radial end face of fixed hole, and bolt 311 passes fixed hole and is fixedly connected with cavity 11 interior ladder surfaces.
Working principle: splenium 32 roof pressures of Gland 3 filler 4, make 32 pairs of fillers of splenium 4 produce impacting force through the bolt 311 of tightening cover plate 31 ends, and filler 4 produces radial force under the effect of impacting force makes filler 4 and valve rod 2 closely connect and compose sealing mechanism.
Claims (6)
1. a valve stem seal mechanism that is used for floating ball valve comprises valve body, valve rod and Gland, and valve body is provided with the through hole that cooperates with valve rod; Through-hole wall is provided with stuffing box, is provided with the filler that cooperates with valve stem seal in the stuffing box, and Gland comprises cover plate; The cover plate lower end is provided with splenium; The splenium roof pressure filler, it is characterized in that: the top of stuffing box is provided with the cavity that cooperates with Gland on the said valve body, and cover plate and splenium all are embedded in the cavity; Cover plate is concordant with the cavity opening, and said Gland is provided with locking device.
2. the valve stem seal mechanism of floating ball valve according to claim 1; It is characterized in that: the cross section of said Gland becomes the setting of T shape structure; The horizontal part of said Gland is a cover plate, and the vertical portion of Gland is a splenium, and said locking device is located on the cover plate; Be provided with the gland hole that supplies valve rod to pass in the middle of the said splenium, the gland hole penetrates cover plate.
3. the valve stem seal mechanism of floating ball valve according to claim 1 and 2, it is characterized in that: said locking device comprises the fixed hole of being located at the cover plate two ends, is provided with bolt in the fixed hole, bolt passes fixed hole and is threaded with valve body.
4. the valve stem seal mechanism of floating ball valve according to claim 3; It is characterized in that: the radial end face of said fixed hole is for being horizontally disposed with; The cross section of said cavity becomes stepped setting, and said bolt passes fixed hole and is threaded with the interior ladder surface of cavity.
5. according to the valve stem seal mechanism of claim 1 or 2 or 4 described floating ball valves, it is characterized in that: said cover plate is a round structure, and cavity and cover plate on the said valve body are equipped with.
6. the valve stem seal mechanism of floating ball valve according to claim 3, it is characterized in that: said cover plate is a round structure, cavity and cover plate on the said valve body are equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201789232U CN202521045U (en) | 2012-04-24 | 2012-04-24 | Valve rod sealing mechanism for floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201789232U CN202521045U (en) | 2012-04-24 | 2012-04-24 | Valve rod sealing mechanism for floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202521045U true CN202521045U (en) | 2012-11-07 |
Family
ID=47103997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201789232U Expired - Fee Related CN202521045U (en) | 2012-04-24 | 2012-04-24 | Valve rod sealing mechanism for floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202521045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606219A (en) * | 2017-10-31 | 2018-01-19 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of ball valve with valve stem gland |
-
2012
- 2012-04-24 CN CN2012201789232U patent/CN202521045U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606219A (en) * | 2017-10-31 | 2018-01-19 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of ball valve with valve stem gland |
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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: 20121107 Termination date: 20180424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |