CN202432007U - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN202432007U CN202432007U CN2012200178706U CN201220017870U CN202432007U CN 202432007 U CN202432007 U CN 202432007U CN 2012200178706 U CN2012200178706 U CN 2012200178706U CN 201220017870 U CN201220017870 U CN 201220017870U CN 202432007 U CN202432007 U CN 202432007U
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- valve
- valve seat
- ball
- ball valve
- spool
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Abstract
The utility model provides a ball valve and belongs to the technical field of valves. The ball valve solves the technical problems of poor sealing effect, large rotational torque of a valve spool and the like of an existing ball valve. The ball valve comprises a valve body, a valve spool and a valve seat arranged between the valve body and the valve spool, the valve seat is made of polytetrafluoroethylene, and an annular groove is radially arranged on the valve seat. The ball valve has the advantages of high sealing performance, time saving in use, high reliability and the like.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of ball valve.
Background technique
Ball valve is that a kind of spheroid with the band manhole is made the ball core, and spheroid places valve body to be driven by valve rod, and the valve that rotates around the axis of valve rod.Ball valve is mainly used in the medium that blocks or connect in the pipeline, also can be used for the adjusting and the control of fluid.At present in the relevant device of the draining of industry and agriculture usefulness and liquid control system, switch is rapid, easy to operate, fluid resistance is little because ball valve has, advantages of simple structure and simple and extensively being adopted.
Ball valve must guarantee that in when work the interior liquid of valve does not leak, so is provided with seal ring between ball valve inner spool and the valve body and seals.The seal ring of ordinary ball valve is to adopt polytetrafluoroethylmaterial material to process at present; There is following defective in this seal ring: the seal ring that polytetrafluoroethylmaterial material is processed is in order to guarantee its sealing effect; Though have certain elasticity, elasticity is relatively poor, can make the seal ring aggravation of in use wearing and tearing like this; The loss amount of wearing and tearing can not get compensation simultaneously, after causing that seal ring is long-term and using with the passing of time elasticity Lock-out ball valve begin to leak and can't normally use.In addition, the sealing effect of seal ring is to lean on compressing of valve gap to accomplish sealing, therefore; In order to guarantee the good seal of seal ring; The pressure that valve gap is applied on the seal ring wants enough big, so just causes the keying moment of ball valve big, needs bigger moment of rotation to drive ball valve.Simultaneously, because factors such as ball valve machining accuracy, assembly quality are eccentric in the time of can causing spheroid to rotate, spheroid off-centre makes spheroid to the extruding of both sides sealing circle, and the seal ring resistance to deformation has strengthened friction and rotational resistance, has increased the keying moment of rotation then again.
In order to address the above problem, people improve seal ring, and for example the disclosed a kind of ball valve of Chinese patent document [is authorized publication number: CN2512961Y with the compound seal element; Application number: 01279640.9]; This ball valve with the compound seal element be by the silicone rubber O-ring seals with gather tetrafluoro ball face sealing circle carry out machinery compound constitute; Through on an end face of O-ring seals, offering an annular groove; Annular groove is embedded in the silicone rubber O-ring seals, and the combination of the material through two different hardness improves the elasticity of seal element, and the sealing effect of seal element is increased.But; The sealing element is owing to the direction that direction is parallel to the seal ring pressure of offering of its annular groove; Its elasticity change amount to seal element is not fairly obvious, therefore, uses the ball valve of sealing element still can exist valve core rotation moment bigger; Seal element can not get compensating in the long-time back seal element and the abrasion loss amount of spool wearing and tearing used, make sealing ring tightness gradually variation finally lose sealing effect.
Summary of the invention
The purpose of the utility model is to have the problems referred to above to existing technology, has proposed a kind of good sealing effect and has opened and closed the lower ball valve of moment of rotation simultaneously.
The purpose of the utility model can realize through following technical proposal: a kind of ball valve; Comprise valve body, spool and be arranged at valve seat between the two; It is characterized in that described valve seat adopts polytetrafluoroethylmaterial material to process, it radially has the groove of an annular described valve seat upper edge.
Valve seat forms sealing respectively and between spool and the valve body, prevents that the liquid in the passage flow duct from overflowing.Groove makes valve seat form the U-shaped seat along radially offering and running through the valve seat two ends of valve seat, and valve seat produces the required external force minimizing of certain deformation like this, has promptly increased the elasticity of valve seat, improves its sealing effect.Because valve seat has higher elasticity, when valve seat was installed, valve seat had more elastic strain, had guaranteed that valve seat can be resisted against on the outer surface of valve interior wall and spool better on the one hand, and sealing effect is increased; In addition, in the long-term wearing and tearing of using rear valve base to receive spool, valve seat can be expanded the wear extent of compensation valve seat, makes valve seat can keep good sealing state all the time; Simultaneously because the elasticity of valve seat increases, can reduce to a certain extent spool when rotating because the increase of the moment of rotation that factors such as off-centre cause makes ball valve easy to use laborsaving.
Be provided with the seal ring that an employing rubber material is processed in the groove of described valve seat.The outer wall of sealing circle contacts with the inwall of groove.Rubber material has better elasticity than teflon, therefore in groove, be provided with seal ring that rubber material processes better the elasticity of lifting valve base improve the sealability of valve seat then.
In above-mentioned ball valve, have a chamfering plane on the outer wall of said valve seat, this chamfering plane is resisted against on the above-mentioned spool outer wall.Increase the area of contact between valve seat and the ball core offering the chamfering plane on the valve seat, promoted the sealing of valve seat then.
In above-mentioned ball valve, be provided with the elastic ring that is in compressive state between described valve seat and the valve body, this elastic ring is resisted against on the described valve seat outer wall.The elastic ring that is in compressive state can be expanded, and the long-term wear extent that is produced of using of valve seat is compensated, and makes valve seat can keep good sealing state all the time.
In above-mentioned ball valve, described valve body is provided with the mounting groove of an annular, and above-mentioned elastic ring is positioned at described mounting groove.
In above-mentioned ball valve, described elastic ring is selected the rubber elasticity circle for use.
In above-mentioned ball valve, described spool is connected with an end of valve rod mutually, and the other end of this valve rod stretches out valve body.The valve core rotation that is used to valve rod drive realizes that the interior flow direction of valve body changes or the distribution of flow, and valve body can be driven by manpower, also can be by motor driving.
Compared with prior art, this ball valve has the following advantages:
1, the valve seat upper edge passage flow duct of this ball valve radially be provided with elastic structure, elastic structure is increased the elasticity of valve seat, has reduced the suffered wearing and tearing of valve seat and the moment of rotation of spool, has increased the sealing effect and the working life of valve seat.
2, this ball valve is provided with the elastic ring that is in compressive state between valve seat and valve body, and elastic ring can be expanded the wear extent of compensation valve seat behind the prooving of valve seat, has improved the sealing stability of valve seat.
3, this ball valve has good seal performance, uses laborsaving, reliability advantages of higher.
Description of drawings
Fig. 1 is the perspective view of this ball valve.
Fig. 2 is this ball valve embodiment one a sectional structure schematic representation.
Fig. 3 is the structure for amplifying schematic representation at A place among Fig. 2.
Fig. 4 is this ball valve embodiment two a sectional structure schematic representation.
Fig. 5 is the structure for amplifying schematic representation at A place among Fig. 4.
Fig. 6 is this ball valve embodiment three a sectional structure schematic representation.
Fig. 7 is the structure for amplifying schematic representation at A place among Fig. 6.
Fig. 8 is this ball valve embodiment four a sectional structure schematic representation.
Fig. 9 is the structure for amplifying schematic representation at A place among Fig. 8.
Figure 10 is the sectional structure schematic representation of this ball valve when being two pass ball valves.
Among the figure, 1, valve body; 2, spool; 3, valve seat; 4, groove; 5, seal ring; 6, elastic ring; 7, mounting groove; 8, valve rod.
Embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technological scheme of the utility model is done further to describe, but the utility model is not limited to these embodiments.
Embodiment one
Like Fig. 1, Fig. 2, shown in Figure 3, this ball valve comprises valve body 1, spool 2 and is arranged at valve seat 3 between the two, and this valve seat 3 adopts polytetrafluoroethylmaterial materials to process, and it radially has the groove 4 of an annular valve seat 3 upper edges.Have a chamfering plane on the outer wall of valve seat 3, this chamfering plane is resisted against on spool 2 outer walls.On valve body 1, also be provided with the valve rod 8 that is used for rotational valve core 2, spool 2 is connected with an end of valve rod 8 mutually, and the other end of this valve rod 8 stretches out valve body 1.
Embodiment two
Like Fig. 4, shown in Figure 5, present embodiment is basic identical with embodiment one structure and principle, and different place is: in the groove 4 of valve seat 3, be provided with the seal ring 5 that an employing rubber material is processed.
Embodiment three
Like Fig. 6, shown in Figure 7, present embodiment is basic identical with embodiment one structure and principle, and different place is between valve seat 3 and valve body 1, to be provided with the elastic ring 6 that is in compressive state, and this elastic ring 6 is resisted against on valve seat 3 outer walls.Valve body 1 is provided with the mounting groove 7 of an annular, and elastic ring 6 is positioned at mounting groove 7.Elastic ring 6 is selected rubber elasticity circle 6 for use.
Embodiment four
Like Fig. 8, shown in Figure 9, present embodiment is basic identical with embodiment three structure and principle, and different place is: in the groove 4 of valve seat 3, be provided with the seal ring 5 that an employing rubber material is processed.
Ball valve related among the above embodiment can certainly be two common pass ball valves shown in figure 10 for arriving tee ball valve shown in Figure 9 like Fig. 1.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as valve body 1, spool 2, valve seat 3, groove 4, seal ring 5, elastic ring 6, mounting groove 7, valve rod 8 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.
Claims (7)
1. a ball valve comprises valve body (1), spool (2) and is arranged at valve seat (3) between the two, it is characterized in that, described valve seat (3) adopts polytetrafluoroethylmaterial material to process, and it radially has the groove (4) of an annular described valve seat (3) upper edge.
2. ball valve according to claim 1 is characterized in that, is provided with the seal ring (5) that an employing rubber material is processed in the groove (4) of described valve seat (3).
3. ball valve according to claim 1 is characterized in that, has a chamfering plane on the outer wall of said valve seat (3), and this chamfering plane is resisted against on above-mentioned spool (2) outer wall.
4. according to claim 1 or 2 or 3 described ball valves, it is characterized in that be provided with the elastic ring (6) that is in compressive state between described valve seat (3) and the valve body (1), this elastic ring (6) is resisted against on described valve seat (3) outer wall.
5. ball valve according to claim 4 is characterized in that, described valve body (1) is provided with the mounting groove (7) of an annular, and above-mentioned elastic ring (6) is positioned at described mounting groove (7).
6. ball valve according to claim 4 is characterized in that, described elastic ring (6) is selected rubber elasticity circle (6) for use.
7. according to claim 1 or 2 or 3 described ball valves, it is characterized in that described spool (2) is connected with an end of valve rod (8) mutually, the other end of this valve rod (8) stretches out valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200178706U CN202432007U (en) | 2012-01-16 | 2012-01-16 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200178706U CN202432007U (en) | 2012-01-16 | 2012-01-16 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202432007U true CN202432007U (en) | 2012-09-12 |
Family
ID=46781453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200178706U Expired - Lifetime CN202432007U (en) | 2012-01-16 | 2012-01-16 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202432007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302221A (en) * | 2018-01-31 | 2018-07-20 | 黄晓峰 | A kind of bottom limit ball valve |
-
2012
- 2012-01-16 CN CN2012200178706U patent/CN202432007U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302221A (en) * | 2018-01-31 | 2018-07-20 | 黄晓峰 | A kind of bottom limit ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |
|
| CX01 | Expiry of patent term |