CN201487288U - Lifting rod type corrugated pipe ball valve - Google Patents
Lifting rod type corrugated pipe ball valve Download PDFInfo
- Publication number
- CN201487288U CN201487288U CN2009201903734U CN200920190373U CN201487288U CN 201487288 U CN201487288 U CN 201487288U CN 2009201903734 U CN2009201903734 U CN 2009201903734U CN 200920190373 U CN200920190373 U CN 200920190373U CN 201487288 U CN201487288 U CN 201487288U
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- China
- Prior art keywords
- valve
- valve rod
- rod
- corrugated pipe
- ball
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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 lifting rod type corrugated pipe ball valve, which comprises a valve body, a valve seat, a ball body, a valve cover, a valve rod, a support, a transmission mechanism, a sealing part and a mounting part, substantially, the valve rod and the valve cover are sealed by a corrugated pipe, a motion trail conversion device is arranged between the lower end of the valve rod and the ball body, a positioning device is arranged between the middle portion of the valve rod and the support, the upper end of the valve rod and the transmission mechanism are connected through a valve rod nut, the drive torque of the transmission mechanism is converted to the rotating motion of the ball body through the liner motion of the valve rod during the starting and stopping process of the ball valve, thereby leading the corrugated pipe to keep in an expansion motion during the starting and stopping process, and achieving to seal the corrugated pipe between the valve rod of the ball valve and the valve cover. The lifting rod type corrugated pipe ball valve has the advantages of reliable sealing performance and the like, and is suitable for pipeline control devices in high temperature, high pressure and abrasiveness medium conditions.
Description
Technical field
The utility model relates to a kind of valve, particularly about a kind of ball valve.
Background technique
Ball valve is because of simple in structure, open-close convenient, the little pipeline medium transporting system that is widely used in each field of flow resistance.Can be divided into hard seal ball valve and soft sealing ball valve by seal form, hard seal ball valve is made up of valve body, valve rod, spheroid, valve gap, driving mechanism, the valve seat and the spheroid that are shaped on Hardmetal materials on the valve body are sealed and matched firmly, fixedly connected with driving mechanism in the valve rod upper end, fixedly connected with spheroid in the lower end, the general graphite grazing that adopts of sealing has characteristics such as high temperature resistant, high pressure resistant, wear-resistant between valve rod and the valve gap.Its major defect is: for motive sealing, in the valve rod rotary course, have wearing and tearing between valve rod and the graphite grazing filler between graphite grazing filler in the valve gap and the valve rod, can occur between the two leaking after long-term the use, sealability is unreliable.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides a kind of sealability reliable lifting rod type corrugated pipe ball valve.
The technical solution of the utility model comprises valve body, valve seat, spheroid, valve gap, valve rod, support, driving mechanism, Sealing and assembling set; Mainly be to adopt sylphon seal between valve rod and the valve gap, the upper end of bellows is sealedly and fixedly connected on valve gap, and the lower end of bellows is sealedly and fixedly connected on valve rod; Be provided with the movement locus conversion equipment between valve rod lower end and the spheroid, this movement locus conversion equipment is made up of the spiral chute of valve rod lower end and the fixing pin on the valve body; Be shaped on positioning device between valve rod middle part and the support, this positioning device is made up of the locating slot of valve rod middle part Vertical direction and the locating stud on the support; Valve rod upper end is connected by Stem Mut with driving mechanism, and screw-thread fit is connected between this Stem Mut and the valve rod, fixedlys connected with driving mechanism.
The utility model beneficial effect compared with prior art is to be connected by Stem Mut with driving mechanism in the valve rod upper end, be shaped on positioning device between valve rod middle part and the support, be provided with the movement locus conversion equipment between valve rod lower end and the spheroid, be connected bellow seal between valve rod and the valve gap, in the ball valve opening-closing process, the driving mechanism driving torque is converted to rotatablely moving of spheroid by the straight line motion of valve rod, make bellows in opening-closing process, keep fore and aft motion, realize the valve rod of ball valve and the sylphon seal between the valve gap, improved the valve rod of ball valve and the sealing reliability between the valve gap.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Embodiment
Lifting rod type corrugated pipe ball valve as shown in Figure 1 comprises valve body 4, valve seat 6, spheroid 20, valve gap 10, valve rod 12, support 15, driving mechanism 16, Sealing and assembling set.Adopt bellows 11 sealings between valve rod 12 and the valve gap 10, the upper end seal welding of bellows 11 is on mounting plate 13, and mounting plate 13 sealings are installed between valve gap 10 and the support 15, and the lower end seal welding of bellows 11 is on valve rod 12.Be provided with the movement locus conversion equipment between valve rod 12 lower ends and the spheroid 20, this movement locus conversion equipment is made up of the spiral chute 9 of valve rod 12 lower ends and the fixing pin 8 on the valve body 20, the angle of spiral chute 9 on valve rod 12 circumferencial directions is above 90 °, fixing pin 8 slides in spiral chute 9, valve rod 12 underparts can be stretched in spheroid 20 passages, by the routing motion of fixing pin 8 in spiral chute 9, the elevating movement of valve rod (12) is converted to rotatablely moving of spheroid (20).Be shaped on positioning device between valve rod 12 middle parts and the support 15, this positioning device is made up of the locating slot 18 of valve rod 12 middle part Vertical direction and the locating stud 14 on the support 15, locating stud 14 is by on screw 19 mounting brackets 15, its end activity is inlaid in the locating slot 18, restriction valve rod 12 rotates in opening-closing process, keep bellows 11 in opening-closing process, to do to stretch and compression movement, realized the sealing of bellows 11 between valve rod 12 and valve gap 10.Be connected by Stem Mut 17 between valve rod 12 upper ends and the driving mechanism 16, screw-thread fit is connected between this Stem Mut 17 and the valve rod 12, fixedlys connected with driving mechanism 16.Valve seat 6 is provided with the seal ring 5 that cooperatively interacts with spheroid 20 sealing surfaces, is provided with floating spring 7 between valve seat 6 and the valve body 4.Spheroid 20 lower ends are positioned on the valve body 4 by valve shaft 2, are provided with bearing 3 between valve shaft 2 and the spheroid 20, and valve shaft 2 lower end surfaces are installed by lower cover 1 sealing.
Claims (1)
1. a lifting rod type corrugated pipe ball valve comprises valve body (4), valve seat (6), spheroid (20), valve gap (10), valve rod (12), support (15), driving mechanism (16), Sealing and assembling set; It is characterized in that adopting between valve rod (12) and the valve gap (10) bellows (11) sealing, the upper end of bellows (11) is sealedly and fixedly connected on valve gap (10), and the lower end of bellows (11) is sealedly and fixedly connected on valve rod (12); Be provided with the movement locus conversion equipment between valve rod (12) lower end and the spheroid (20), this movement locus conversion equipment is made up of the spiral chute (9) of valve rod (12) lower end and the fixing pin (8) on the valve body (4); Be shaped on positioning device between valve rod (12) middle part and the support (15), this positioning device is made up of the locating slot (18) of valve rod (12) middle part Vertical direction and the locating stud (14) on the support (15); Valve rod (12) upper end is connected by Stem Mut (17) with driving mechanism (16), and screw-thread fit is connected between this Stem Mut (17) and the valve rod (12), fixedlys connected with driving mechanism (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903734U CN201487288U (en) | 2009-08-03 | 2009-08-03 | Lifting rod type corrugated pipe ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903734U CN201487288U (en) | 2009-08-03 | 2009-08-03 | Lifting rod type corrugated pipe ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487288U true CN201487288U (en) | 2010-05-26 |
Family
ID=42426167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201903734U Expired - Fee Related CN201487288U (en) | 2009-08-03 | 2009-08-03 | Lifting rod type corrugated pipe ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155555A (en) * | 2011-04-19 | 2011-08-17 | 浙江超达阀门股份有限公司 | Valve seat structure of metal hard sealing ball valve |
-
2009
- 2009-08-03 CN CN2009201903734U patent/CN201487288U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155555A (en) * | 2011-04-19 | 2011-08-17 | 浙江超达阀门股份有限公司 | Valve seat structure of metal hard sealing ball 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 |
Granted publication date: 20100526 Termination date: 20170803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |