CN2588138Y - Adjustabe pistion valve - Google Patents
Adjustabe pistion valve Download PDFInfo
- Publication number
- CN2588138Y CN2588138Y CN 02258631 CN02258631U CN2588138Y CN 2588138 Y CN2588138 Y CN 2588138Y CN 02258631 CN02258631 CN 02258631 CN 02258631 U CN02258631 U CN 02258631U CN 2588138 Y CN2588138 Y CN 2588138Y
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- sealing
- valve rod
- rod
- 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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Abstract
The utility model relates to a piston valve, which comprises a valve body, a valve rod, a valve cap, a piston, a valve seat, a driving mechanism, a sealing element and an installing element, wherein, the valve seat and the piston have mutually matched tapered sealing curved surfaces, and the upper part of the piston is provided with a soft sealed piston ring of a curved surface mutually matched with the sealing surface of the valve seat. An adjustable compressing device is arranged on a filler between the valve cap and the valve rod, and an inversed sealing device is arranged between the lower plane surface of the valve cap and the valve rod. The sealing reliability of the filler of the valve rod is enhanced, and the utility model having the advantages of favorable sealing performance, long service life, portability for opening, etc. is suitable for the valves of various pipeline switches.
Description
Technical field
The utility model relates to a kind of valve that is used for pipe switch, specifically about a kind of piston valve.
Background technique
Piston valve generally is made up of valve body, valve rod, valve gap, piston, valve seat, driving mechanism, Sealing and assembling set etc., and valve seat and piston have the cone seal curved surface that cooperatively interacts, so valve seat claims piston cylinder again.This cone seal curved-surface structure has this valve and opens and closes light advantage.But, the piston valve of existing structure, along with the prolongation of service time, leaking appears in stuffing box packing between valve rod and the valve gap easily, so its sealability is unreliable.
The model utility content
The purpose of this utility model is at the deficiencies in the prior art, provides a kind of sealability reliable adjusting piston valve.
The technological scheme that realizes the utility model purpose comprises valve body, valve rod, valve gap, piston, valve seat, driving mechanism, Sealing and assembling set, valve seat and piston have the cone seal curved surface that cooperatively interacts, be provided with on the top of piston and have and the cooperatively interact soft seal piston ring of curved surface of sealing surface of seat, its key is to be provided with the can regulate hold down gag above the filler between valve gap and valve rod, is provided with between valve gap lower plane and the valve rod and closes seal arrangement.
One of the utility model advantage compared with prior art is: be provided with between valve gap lower plane and valve rod and close seal arrangement, when valve opening, the sealing device constitutes first road sealing between valve gap and the valve rod, increases the sealability between valve gap and the valve rod;
Two of the utility model advantage compared with prior art is: be provided with the can regulate hold down gag above the filler between valve gap and valve rod, this can regulate hold down gag can be adjusted filler, keep the sealability between valve rod and the valve gap, improved the sealing reliability between valve rod and the valve gap.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Adjusting piston valve as shown in Figure 1, comprise valve body 1, valve rod 8, valve gap 11, piston 2, valve seat 3, driving mechanism, Sealing and assembling set, valve seat 3 has the cone seal curved surface that cooperatively interacts with piston 2, be provided with on the top of piston 2 and have and the cooperatively interact soft seal piston ring 4 of curved surface of valve seat 3 sealing surfaces, press-fiting piston cap 5 above this soft seal piston ring 4, install by bolt 7 between piston cap 5 and the piston 2, when soft seal piston ring 4 after valve using process wearing and tearing, can adjust piston cap 5 by bolt 7, make soft seal piston ring 4 and valve seat 3 keep good sealing state.Be provided with connecting ring 6 between valve rod 8 and the piston cap 5.Install by bolt between valve gap 11 and the valve body 1, and between is provided with seal ring 9.Be provided with stuffing box packing 12 between valve gap 11 and the valve rod 8, on stuffing box packing 12, be provided with the can regulate hold down gag.So-called can regulate hold down gag is made up of gland 14, gland bolt 15 and adjusting nut 13, gland bolt 15 is installed in gland 14 on the valve gap 11, by the relative position of adjusting nut 13 adjustment glands 14, guarantee the reliable sealing of stuffing box packing 12 at valve rod 8 and valve gap 11 places with valve gap 11.Between valve gap 11 lower planes and valve rod 8, be provided with and close seal arrangement, this closes seal arrangement by constituting at the soft seal ring 10 of valve gap 11 lower plane settings and the convex shoulder of valve rod 8 lower ends, behind valve opening, the soft seal ring 10 that the convex shoulder of valve rod 8 lower ends and valve gap 11 lower planes are provided with forms sealing configuration.
Claims (3)
1, a kind of adjusting piston valve, comprise valve body (1), valve rod (8), valve gap (11), piston (2), valve seat (3), driving mechanism, Sealing and assembling set, valve seat (3) has the cone seal curved surface that cooperatively interacts with piston (2), the top of piston (2) is provided with to have and the cooperatively interact soft seal piston ring (4) of curved surface of sealing surface of seat, it is characterized in that being provided with the can regulate hold down gag above the filler (12) between valve gap (11) and valve rod (8), between valve gap (11) lower plane and valve rod (8), be provided with and close seal arrangement.
2, adjusting piston valve according to claim 1 is characterized in that closing seal arrangement and is made of the convex shoulder of the soft seal ring (10) that is provided with at valve gap (11) lower plane with valve rod (8) lower end.
3, adjusting piston valve according to claim 1 and 2, it is characterized in that the can regulate hold down gag is made up of gland (14), gland bolt (15) and adjusting nut (13), gland bolt (15) is installed in gland (14) on the valve gap (11), and is adjusted the relative position of gland (14) and valve gap (11) by adjusting nut (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258631 CN2588138Y (en) | 2002-11-17 | 2002-11-17 | Adjustabe pistion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258631 CN2588138Y (en) | 2002-11-17 | 2002-11-17 | Adjustabe pistion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588138Y true CN2588138Y (en) | 2003-11-26 |
Family
ID=33726309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02258631 Expired - Fee Related CN2588138Y (en) | 2002-11-17 | 2002-11-17 | Adjustabe pistion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588138Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397787A (en) * | 2019-06-21 | 2019-11-01 | 中国计量大学上虞高等研究院有限公司 | The pipeline throttling shock resistance poppet valve device of bidirectional rotation dynamic pressure sealing |
-
2002
- 2002-11-17 CN CN 02258631 patent/CN2588138Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397787A (en) * | 2019-06-21 | 2019-11-01 | 中国计量大学上虞高等研究院有限公司 | The pipeline throttling shock resistance poppet valve device of bidirectional rotation dynamic pressure sealing |
| CN110397787B (en) * | 2019-06-21 | 2020-09-25 | 中国计量大学上虞高等研究院有限公司 | Bidirectional rotary dynamic pressure sealed pipeline throttling impact-resistant poppet valve device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |