CN202733049U - Improved three-way stop valve - Google Patents
Improved three-way stop valve Download PDFInfo
- Publication number
- CN202733049U CN202733049U CN 201220302404 CN201220302404U CN202733049U CN 202733049 U CN202733049 U CN 202733049U CN 201220302404 CN201220302404 CN 201220302404 CN 201220302404 U CN201220302404 U CN 201220302404U CN 202733049 U CN202733049 U CN 202733049U
- Authority
- CN
- China
- Prior art keywords
- valve
- bonnet
- cavity
- valve seat
- improved
- 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
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses an improved three-way stop valve, which comprises a valve body, a bonnet, a valve stem, a valve clack, an upper valve seat and a lower valve seat, the upper valve seat and the lower valve seat are arranged in the valve body, the bonnet is tightly connected with the valve body through bolts, the valve stem is arranged in the bonnet, the upper end of the valve stem is connected with a driving mechanism, the lower end of the valve stem is fixedly connected with the valve clack, the valve clack is arranged between the upper valve seat and the lower valve seat, and is tightly matched with the upper valve seat and the lower valve seat, the bonnet is provided with a first cavity at the position where the bonnet is connected with the valve stem, the bonnet is provided with first sealing grooves over and under the first cavity, and seal rings are embedded in the first sealing grooves. On the basis of the original parts, the structure is slightly improved without adding parts, the lubricating cavity structure is added on the motion route of the valve stem, so that the valve stem can be prevented from being stuck, seized, rubbed and scratched in the process of operation. Due to the sealing surface-hardening process and the innovation and improvement of materials, the corrosion resistance, scratch resistance and abrasion resistance of the valve are enhanced, thus better guaranteeing the sealing property and service life of the valve.
Description
Technical field
The utility model relates to the valve mechanism field, particularly a kind of improved three-way cut-off valve.
Background technique
Three-way cut-off valve is the inlet valve of hyperbaric heating system of heating power power plant, and its operating mode is: pressure medium is high, washes away serious, switching frequency is high, and require the valve of switch two-way sealing, this kind valve of in the past domestic production is under the high pressure operating mode, flushing resistance is poor, produce easily seal failure, valve open and close jam, the scratch that occurs easily movement parts in the operating process, cause valve to damage and operate malfunctioning, serious whole deck valve door is scrapped, and the working life of shaping valve is short.
Summary of the invention
In order to overcome defects, the utility model provides a kind of good seal performance, the improved three-way cut-off valve of long service life.
The utility model for the technological scheme that solves its technical problem and adopt is: a kind of improved three-way cut-off valve, comprise valve body, valve gap, valve rod, flap, be located at upper valve base and lower valve base in the valve body, valve gap is connected by bolt seal with valve body, valve rod is located in the valve gap, the valve rod upper end connects driving mechanism, the lower end of valve rod is fixedly connected with flap, flap places between upper valve base and the lower valve base and with upper valve base and lower valve base and is sealed and matched, be provided with one first cavity with the valve rod joint on the described valve gap, the upper and lower of the first cavity is equipped with the first seal groove on the valve gap, is embedded seal ring in the first seal groove.
As further improvement of the utility model, also be provided with one second cavity with the valve rod joint on the described upper valve base, the upper and lower of the second cavity is equipped with the second seal groove on the upper valve base, is provided with seal ring in the second seal groove.
As further improvement of the utility model, described seal ring is carbon seal ring.
As further improvement of the utility model, the inner chamber of described valve body is spherical cavity.
The beneficial effects of the utility model are:
1, the utility model is suitable with valve rod contacts counterpart from top to bottom with other quality of fit adjustment, by with valve rod and valve cover hole, valve rod changed into by the graphite seal with cooperating by original precision-fit of upper valve base hub bore, the cooperation that middle cavity forms, valve rod and valve gap have been reduced, upper valve base complexed metal area of contact, and be full of all the time high-pressure medium in the middle cavity that the graphite seal forms, the lubrication certain to moving up and down of valve rod to a certain extent, do not affect valve rod coaxality requirement up and down, increased again the relative freedom of stem movement.Valve rod and flap adopt sphere turbine cushion block, and be to be flexibly connected, easy automatic centering under the high-pressure medium effect, improved the sealing surface Percent of contact area, the processing of associated part is just easier comparatively speaking, through such improvement, basically eliminated the jam of valve rod in switching process, killed, the phenomenon such as scratch, also slightly reduced the switch moment of valve simultaneously.
2, the inner chamber of valve body adopts the spherical inner chamber structure, and purpose is to reduce the flow resistance of flowing medium in the chamber or the possibility of generation eddy current, reduces the flowage friction heat of high-pressure medium, improves the state that housing bears pressure.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
In order to deepen understanding of the present utility model, the utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the utility model, does not consist of the restriction to the utility model protection domain.
Fig. 1 has shown a kind of mode of execution of a kind of improved three-way cut-off valve of the utility model, comprise valve body 1, valve gap 2, valve rod 3, flap 4, be located at upper valve base 5 and lower valve base 6 in the valve body 1, valve gap 2 and valve body 1 are connected by bolt seal, valve rod 3 is located in the valve gap 2, valve rod 3 upper ends connect driving mechanism 7, the lower end of valve rod 3 is fixedly connected with flap 4, flap 4 places between upper valve base 5 and the lower valve base 6 and with upper valve base 5 and lower valve base 6 and is sealed and matched, be provided with one first cavity 8 with valve rod 3 joints on the described valve gap 2, the upper and lower of the first cavity is equipped with in the first seal groove 9, the first seal grooves and is embedded seal ring 10 on the valve gap 2; Also be provided with one second cavity 11 with valve rod 3 joints on the described upper valve base 5, the upper and lower of the second cavity is equipped with the second seal groove 12 on the upper valve base 5, be provided with seal ring 10 in the second seal groove, described seal ring 10 is carbon seal ring, by with valve rod and valve cover hole, valve rod changed into by the graphite seal with cooperating by original precision-fit of upper valve base hub bore, the cooperation that middle cavity forms, basically eliminated the jam that valve rod is in operation, killed, the phenomenon such as scratch, guaranteed the service precision of valve rod; The inner chamber of described valve body 1 is spherical cavity, reduces the flow resistance of flowing medium in the chamber or the possibility of generation eddy current, reduces the flowage friction heat of high-pressure medium, improves the state that housing bears pressure.
Claims (4)
1. improved three-way cut-off valve, comprise valve body (1), valve gap (2), valve rod (3), flap (4), be located at upper valve base (5) and lower valve base (6) in the valve body (1), valve gap (2) is connected by bolt seal with valve body (1), valve rod (3) is located in the valve gap (2), valve rod (3) upper end connects driving mechanism (7), the lower end of valve rod (3) is fixedly connected with flap (4), flap (4) places between upper valve base (5) and the lower valve base (6) and with upper valve base (5) and lower valve base (6) and is sealed and matched, it is characterized in that: on the described valve gap (2) and valve rod (3) joint is provided with one first cavity (8), the upper and lower of upper the first cavity of valve gap (2) is equipped with the first seal groove (9), is embedded seal ring (10) in the first seal groove.
2. improved three-way cut-off valve according to claim 1, it is characterized in that: on the described upper valve base (5) and valve rod (3) joint also is provided with one second cavity (11), the upper and lower of upper the second cavity of upper valve base (5) is equipped with the second seal groove (12), is provided with seal ring (10) in the second seal groove.
3. improved three-way cut-off valve according to claim 1 and 2 is characterized in that: described seal ring (10) is carbon seal ring.
4. improved three-way cut-off valve according to claim 1, it is characterized in that: the inner chamber of described valve body (1) is spherical cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302404 CN202733049U (en) | 2012-06-27 | 2012-06-27 | Improved three-way stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302404 CN202733049U (en) | 2012-06-27 | 2012-06-27 | Improved three-way stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733049U true CN202733049U (en) | 2013-02-13 |
Family
ID=47658750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220302404 Expired - Fee Related CN202733049U (en) | 2012-06-27 | 2012-06-27 | Improved three-way stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847922A (en) * | 2014-02-18 | 2015-08-19 | 株式会社迪思科 | Three-way valve and intake system |
-
2012
- 2012-06-27 CN CN 201220302404 patent/CN202733049U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847922A (en) * | 2014-02-18 | 2015-08-19 | 株式会社迪思科 | Three-way valve and intake system |
| CN104847922B (en) * | 2014-02-18 | 2018-11-16 | 株式会社迪思科 | Triple valve and gas handling system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102734486A (en) | Valve assembly sealing device of low temperature ball valve | |
| CN203240024U (en) | High-pressure dual-seal check valve | |
| CN101109457A (en) | Abrasion-proof hard seal metal ball valve | |
| CN202195103U (en) | Metal hard seal body valve seat ball valve | |
| CN202733049U (en) | Improved three-way stop valve | |
| CN104482253A (en) | Combined valve | |
| CN203239986U (en) | Integrated type high performance partitioning valve | |
| CN201723746U (en) | High-temperature and high-pressure stop valve of T-type power station | |
| CN103511656B (en) | Segmentation valve rod type friction-free ball valve | |
| CN104373606A (en) | Elastic stop valve and operation method thereof | |
| CN203202254U (en) | Double-eccentric and bidirectional metallic seal butterfly valve | |
| CN203823116U (en) | Ceramic ball valve with high corrosion resistance and erosive wear resistance | |
| CN203500489U (en) | Floating valve seat balanced-type high-temperature regulating cutoff valve | |
| CN201363431Y (en) | Quick-service throttling cut-off valve | |
| CN209638413U (en) | A kind of butterfly valve of quick reparation valve plate | |
| CN102777632A (en) | Three-way cutoff valve | |
| CN216242501U (en) | Lifting type silencing check valve | |
| CN203189780U (en) | High-pressure self-sealing spherical valve | |
| CN202992206U (en) | Spherical surface rigidity sealing butterfly valve | |
| CN204226663U (en) | A kind of elasticity stop valve | |
| CN204387383U (en) | A kind of improved ball valve | |
| CN203585398U (en) | Friction-free ball valve with sectional valve rod | |
| CN202597754U (en) | Ball valve structure | |
| CN102494172A (en) | High-voltage electrically-operated valve | |
| CN212959901U (en) | Double-eccentric soft sealing butterfly valve |
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: 20130213 Termination date: 20180627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |