CN2927018Y - Valve-lever sealing structure of pressure gage valve - Google Patents
Valve-lever sealing structure of pressure gage valve Download PDFInfo
- Publication number
- CN2927018Y CN2927018Y CN 200620101483 CN200620101483U CN2927018Y CN 2927018 Y CN2927018 Y CN 2927018Y CN 200620101483 CN200620101483 CN 200620101483 CN 200620101483 U CN200620101483 U CN 200620101483U CN 2927018 Y CN2927018 Y CN 2927018Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- pressure gauge
- valve body
- sealing
- 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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- Details Of Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model provides a valve rod sealing structure for the pressure gauge valve, which belongs to the technical field of machinery and has solved the issues of bad sealing effect, short service life and low working stability in the existing technology. The valve rod sealing structure for the pressure gauge valve is arranged between the valve body and the valve rod, which comprises a gland nut and a press hat. The gland nut is connected outside the valve body, while the press hat is sheathed on the valve rod and the exterior of the press hat is thread connected with the interior of the valve body. The middle part of the valve rod is a thread connecting part and the lower part of the valve rod is a sealing part, while the outer diameter of the thread connecting part is larger than that of the sealing part and the thread connecting part is thread connected with the valve body. The press hat is arranged at the sealing part and a sealing ring is arranged between the lower side of the press hat and the valve body. The pressure gauge valve in the utility model is not only good in sealing effect and stable in structure but also has a long service life and is easy for maintaining.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to the valve rod leak-proof structure of a kind of pressure gauge valve, particularly a kind of pressure gauge valve.
Background technology
Tensimeter uses in pipe system extensively, can understand pressure size in the pipeline immediately by it.For example, be typically provided with in pipeline road and be responsible for the arm that communicates, this arm is used for being connected with pressure gauge valve, is connecting the tensimeter of test pressure on the pressure gauge valve.
Owing to have valve rod on the pressure gauge valve, by rotation valve rod it is moved up and down, and reach the purpose that pressure gauge valve is closed or opened, whether that is to say unlatching by pressure gauge valve or the manometric work of closing control.As can be seen, the sealing at pressure gauge valve valve rod place seems particularly main.
As shown in Figure 3, common sealing means is to offer one or multi-channel recessed packing holder in valve rod 2 outsides, and places O-ring seal 5 within it.Being provided with the clearance seal between valve rod 2 and the valve body 1 of O-ring seal 5 prevents that fluid from leaking.But O-ring seal 5 can be along with valve rod 2 moves up and down with respect to valve body 1 in the switching process for pressure gauge valve.Like this, after pressure gauge valve used a period of time, the friction force between O-ring seal 5 and the valve body 1 will cause O-ring seal 5 distortion, and influences sealing effectiveness.O-ring seal 5 also can come off from the packing holder of valve rod 2 when serious, causes pressure gauge valve normally to use.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing pressure gauge valve, and a kind of valve rod leak-proof structure of pressure gauge valve is provided, and makes its not only good sealing effect, but also has characteristics reliable and stable, simple in structure, that be convenient to safeguard.
The purpose of this utility model can realize by following technical proposal: a kind of valve rod leak-proof structure of pressure gauge valve, be arranged at valve body and valve rod place, it comprises gland nut, pressure cap, gland nut is connected the valve body outside, pressure cap be enclosed within on the valve rod and the pressure cap outside and valve body inboard by being threaded, it is characterized in that, described valve rod middle part is a spiro union portion, the bottom of valve rod is a sealing, the external diameter of spiro union portion is greater than the external diameter of sealing, spiro union portion and valve body be by being threaded, and above-mentioned pressure cap is enclosed within sealing and is provided with O-ring seal between the downside of pressure cap and valve body.
Pressure gauge valve is installed in the pipe system, and the tensimeter of test pressure is housed on pressure gauge valve.Gland nut is connected the valve body outside of pressure gauge valve, because gland nut can stop the bigger spiro union portion of external diameter at valve rod middle part, therefore, valve rod just can not break away from valve body, thereby guarantees the normal use of pressure gauge valve.
Simultaneously, pressure cap is threaded in the valve body inboard, and will be pressed between valve body and the pressure cap at its downside O-ring seal, forms sealing at the valve rod place by such structure, prevents to leak.
In the valve rod leak-proof structure of above-mentioned pressure gauge valve, described O-ring seal is an O-ring seals.The employing O-ring seals is easy to implement, and cost is lower.
In the valve rod leak-proof structure of above-mentioned pressure gauge valve, the downside of described O-ring seals is provided with carbon seal ring.Reach the effect of double seal by carbon seal ring, simultaneously above-mentioned O-ring seals is played positioning action.
In the valve rod leak-proof structure of above-mentioned pressure gauge valve, be provided with a step in the described valve body, above-mentioned carbon seal ring is engaged in this step place.By such structure, prevent the carbon seal ring displacement, avoid influencing sealing effectiveness.
In the valve rod leak-proof structure of above-mentioned pressure gauge valve, described pressure cap downside is recessed packing holder one.The installing O-ring seal plays the role of positioning to O-ring seal in the packing holder, makes that O-ring seal can displacement.
In the valve rod leak-proof structure of above-mentioned pressure gauge valve, be bolted with set nut near the gland nut place on the described valve body.Utilize set nut can prevent that gland nut is loosening.
Compared with prior art, the valve rod leak-proof structure of pressure gauge valve of the present utility model is pressed on O-ring seals and carbon seal ring in the valve body by the pressure cap that is screwed onto the valve body inboard, because O-ring seal is between valve rod and valve body, therefore, form good sealing by such structure at the valve rod place, can prevent effectively that liquid or other medium in the pressure gauge valve from leaking through the gap location of valve rod and valve body.Simultaneously, because O-ring seals is fixed in the valve body by pressure cap, when opening and closing pressure gauge valve, be that valve rod moves up and down, and O-ring seals maintain static.Obviously, such Stability Analysis of Structures is reliable, and O-ring seal is longer not fragile serviceable life.In addition, when changing O-ring seals, successively that gland nut, valve rod and pressure cap removal is promptly replaceable.As can be seen, it is simple in structure, be easy to safeguard.
Description of drawings
Fig. 1 is the structural representation of pressure gauge valve that has the valve rod leak-proof structure of this pressure gauge valve.
Fig. 2 is the local structure for amplifying synoptic diagram of the valve rod leak-proof structure of pressure gauge valve.
Fig. 3 is the synoptic diagram of the hermetically-sealed construction at existing pressure gauge valve valve rod place.
Among the figure, 1, valve body; 11, step; 2, valve rod; 21, spiro union portion; 22, sealing; 3, gland nut; 4, pressure cap; 41, packing holder; 5, O-ring seal; 6, carbon seal ring; 7, set nut.
Embodiment
As shown in Figure 1, the valve rod leak-proof structure of this pressure gauge valve is located at the valve body 1 and valve rod 2 places of pressure gauge valve, and it comprises gland nut 3, pressure cap 4 and O-ring seal 5.
Gland nut 3 is by being threaded in valve body 1 outside.One end of valve rod 2 stretches out valve body 1, and the other end is positioned at valve body 1.The middle part of valve rod 2 has the bigger spiro union portion of external diameter 21, and spiro union portion 21 is threaded in the valve body 1.Gland nut 3 stops the spiro union portion 21 of valve rod 2, makes valve rod 2 can not shift out valve body 1.
The downside of valve rod 2 spiro union portions 21 is less sealings of external diameter 22, and pressure cap 4 and O-ring seal 5 all are socketed in the sealing 22 of valve rod 2.
As shown in Figure 2, the downside of pressure cap 4 is provided with recessed together packing holder 41.The outside of pressure cap 4 is provided with screw thread, is connected by the screw thread of this screw thread with valve body 1 inboard, thereby pressure cap 4 is connected in the valve body 1.Be provided with a step 11 in the valve body 1, step 11 is provided with a carbon seal ring 6 friction tight with it, and O-ring seal 5 is pressed between pressure cap 4 and the carbon seal ring 6, and in the present embodiment, O-ring seal 5 is an O-ring seals.
As shown in Figure 1, when opening and closing pressure gauge valve, the handle that is connected in valve rod 2 outer ends by rotation gets final product.Behind the turning handle, valve rod 2 move up and down the purpose that just can realize opening and closing pressure gauge valve.Pressure cap 4 is threaded in valve body 1 inboard, between step 11 and pressure cap 4 that the O-ring seals 5 and the carbon seal ring 6 of pressure cap 4 downsides is pressed on valve body 1, form sealing at valve rod 2 places by such structure, prevent to flow through pressure gauge valve interior fluid or other medium leak.
Because pressure cap 4 maintains static, therefore, the O-ring seal 5 that is crushed between pressure cap 4 and the valve body 2 also just can not be along with valve rod 2 moves up and down.As can be seen, O-ring seal 5 difficult drop-offs make that so not only the sealing effectiveness at valve rod 2 places is better, and stability is higher.
Claims (6)
1, a kind of valve rod leak-proof structure of pressure gauge valve, being arranged at valve body (1) locates with valve rod (2), it comprises gland nut (3), pressure cap (4), gland nut (3) is connected valve body (1) outside, pressure cap (4) is enclosed within on the valve rod (1) and is inboard by being threaded with valve body (1) outside the pressure cap (4), it is characterized in that, described valve rod (2) middle part is spiro union portion (21), the bottom of valve rod (2) is sealing (22), the external diameter of spiro union portion (21) is greater than the external diameter of sealing (22), spiro union portion (21) and valve body (1) be by being threaded, and above-mentioned pressure cap (4) is enclosed within sealing (22) and is provided with O-ring seal (5) between the downside of pressure cap (4) and valve body (1).
2, the valve rod leak-proof structure of pressure gauge valve according to claim 1 is characterized in that, described O-ring seal (5) is an O-ring seals.
3, the valve rod leak-proof structure of pressure gauge valve according to claim 2 is characterized in that, the downside of described O-ring seals is provided with carbon seal ring (6).
4, the valve rod leak-proof structure of pressure gauge valve according to claim 3 is characterized in that, is provided with a step (11) in the described valve body (1), and above-mentioned carbon seal ring (6) is engaged in this step (11) and locates.
5, the valve rod leak-proof structure of pressure gauge valve according to claim 1 and 2 is characterized in that, described pressure cap (4) downside is recessed one packing holder (41).
According to the valve rod leak-proof structure of claim 1 or 2 or 4 described pressure gauge valves, it is characterized in that 6, described valve body (1) is gone up near gland nut (3) and located to be bolted with set nut (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101483 CN2927018Y (en) | 2006-03-08 | 2006-03-08 | Valve-lever sealing structure of pressure gage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620101483 CN2927018Y (en) | 2006-03-08 | 2006-03-08 | Valve-lever sealing structure of pressure gage valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927018Y true CN2927018Y (en) | 2007-07-25 |
Family
ID=38281270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620101483 Expired - Fee Related CN2927018Y (en) | 2006-03-08 | 2006-03-08 | Valve-lever sealing structure of pressure gage valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927018Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062227A (en) * | 2010-12-23 | 2011-05-18 | 大丰市丰泰机电有限公司 | Low pressure gauge valve |
| CN109443634A (en) * | 2018-12-25 | 2019-03-08 | 四川优机实业股份有限公司 | Laminated structure is surveyed in sealing |
-
2006
- 2006-03-08 CN CN 200620101483 patent/CN2927018Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062227A (en) * | 2010-12-23 | 2011-05-18 | 大丰市丰泰机电有限公司 | Low pressure gauge valve |
| CN109443634A (en) * | 2018-12-25 | 2019-03-08 | 四川优机实业股份有限公司 | Laminated structure is surveyed in sealing |
| CN109443634B (en) * | 2018-12-25 | 2024-06-04 | 四川优机实业股份有限公司 | Sealing pressure measuring structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070725 Termination date: 20130308 |