CN202252047U - Pneumatic ceramic sealing parallel gate valve - Google Patents
Pneumatic ceramic sealing parallel gate valve Download PDFInfo
- Publication number
- CN202252047U CN202252047U CN2011203456412U CN201120345641U CN202252047U CN 202252047 U CN202252047 U CN 202252047U CN 2011203456412 U CN2011203456412 U CN 2011203456412U CN 201120345641 U CN201120345641 U CN 201120345641U CN 202252047 U CN202252047 U CN 202252047U
- Authority
- CN
- China
- Prior art keywords
- valve
- ceramic
- sealing
- seal ring
- annular groove
- 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
- Sliding Valves (AREA)
Abstract
The utility model relates to a pneumatic ceramic sealing parallel gate valve, which is characterized in that a first annular groove (7-1) and a second annular groove (7-2) are arranged at the outer circumference of a gate plate (7), wherein a sealing ring (10) is arranged in the first annular groove (7-1), one end of the sealing ring (10) is in contact with an end surface (5-1) arranged on a ceramic sealing ring (5), a press plate (6) and a lug boss (6-1) arranged in the second annular groove (7-2) are connected to screw threads (7-3) arranged in the gate plate (7) through a hexagon socket screw (8) and are in a tight pressing state with a lug boss (5-3) arranged on the ceramic sealing ring (5). One end of a sealing seat (2) is provided with a sealing step (2-2) capable of accommodating a valve seat sealing ring (4), the end surface of the valve seat sealing ring (4) is in contact with the end surface (3-2) on the valve seat (3) to form a sealing state, and screw threads (2-1) arranged at one end of the sealing seat (2) are engaged with screw threads (1-1) arranged in a valve body (1).
Description
Technical field
The invention belongs to gate valve, relate in particular to pneumatic ceramic seal Parallel gate valve Parallel slide valve.
Background technique
Parallel gate valve Parallel slide valve mainly is to constitute with bolted valve gap each other with the valve chest that is provided with fluid passage and; Connect and the medium that dams when opening and closing in order to be supported in; Need be with so that the drive screw that valve moves between channel opening and closing position to be done vertical moving up and down to drive the parallel type flashboard in valve casing, screw rod passes housing, is positioned at the outside of this valve; Because of manufacturing technique requirent needs fast quick-action, so connect driving by Pneumatic actuator.Tightness between the wall of guaranteeing fluid passage and housing periphery; Also need a pair of valve seat; Valve seat is circular, inner circumferential surface in housing, form and the step cutting pattern that stretches out in the both sides at fluid passage center, the periphery of valve seat and flashboard connects airtight to claim to be the sealing surface of valve seat when full cut-off.
In Parallel gate valve Parallel slide valve, (on 2.5～10Mpa) flowing mediums, the sealing of valve seat and flashboard needs a sealing layer wear-resisting, corrosion-resistant and hardness is high in order to adapt to high temperature (350～575 ℃) and high pressure on the petrochemical plant; Great majority are pile-up welding hard alloy at present; The domestic No Assets of this Co-base alloy material, long-term dependence on import, and cost an arm and a leg; Even if this material using effect on the high temperature and high pressure flowing medium is also undesirable; Because the active force of parallel type flashboard fluid in opening-closing process can form higher specific pressure on the flashboard of outlet side, be easy to cause the sealing surface of valve to produce the fretting wear phenomenon, also there is the adhesive wear of erosion and scratch and metal and metal in addition; These all directly influence sealing effect and working life; Therefore, used on the market for a long time after a break time and to have leaked phenomenon in regard to ubiquity, and keeped in repair suitable difficulty.
For example CN1014135900A supporting type double-seal double-gate plate flat plate gate valve patent documentation promptly belongs to such type; Because flashboard is difficult to accomplish parallel and smooth with the sealing surface of seat work in-process; Block medium so must rely on external force to force to be fitted in the two sides; Disadvantageous consequence can produce fretting wear as the said sealing surface of preamble; And these wearing and tearing are just having during in the valve delivery test sealing surface to damage the generation of incident under the not high situation of quality of processing, and in fact the use of valve does not still reach gratifying effect.
Patent documentation: notification number CN2632418A discloses a kind of earthenware slab gate valve, is used for the ash disposal system of power station, because the central rubber seal that designed; Can not be used for high temperature; Belong to and force down warm category in low, flashboard is bulk ceramics manufactured good, and known pottery has and is prone to crisp characteristic; Do not have special protection to arrange or execute misoperation to have broken hidden danger; Large-area plane lapping of ceramic in addition flashboard and pressing process etc. can bring cost significantly to rise, and therefore can only be used for specific occasions, so limited the using scope of this product to a large extent.
Summary of the invention
A kind of pneumatic ceramic seal Parallel gate valve Parallel slide valve; Characteristic is: valve valve rod (9) when opening and closing drives flashboard (7) and in valve body (1), moves up and down; Valve rod (9) passes outside valve body (1) and the valve gap (11); Be connected driving by valve rod (9) with pneumatic actuating device (12) or handwheel (13), the sealing surface (5-2) on the ceramic-seal ring (5) in sealing surface (3-1) when the gate valve full cut-off on the ceramic valve seat (3) and the flashboard (7) connects airtight.
On the periphery circle of flashboard (7), establish first annular groove (7-1) and second annular groove (7-2); Wherein, Be equipped with seal ring (10) in first annular groove (7-1); One end of said seal ring (10) contacts with end face (5-1) on the ceramic-seal ring (5), is equipped with the state that pressing plate (6), boss (6-1) are connected to screw thread (7-3) in the flashboard (7), become to compress with boss (5-3) on the ceramic-seal ring (5) through hexagon socket head cap screw (8) in said second annular groove (7-2).
Sealing seat (2) one ends are provided with the sealed step (2-2) that can hold valve seat insert (4); End face (3-2) on the end face of said valve seat insert (4) and the ceramic valve seat (3) makes contact to the situation of sealing, screw thread (1-1) bridle joint in the threaded one end (2-1) of said sealing seat (2) and the valve body (1).
Beneficial effect
Long service life; Metal can oxidation, and stupalith not can, and have that anti-high heat, weatherability are strong, steady chemical structure, characteristic such as firm; Pottery also has superpower hardness; Corrosion-resistant and crocking resistance are superior, and in working life that can highly effective raising valve, for example JB/T8859-2004 gate valve static pressure life-span rules regulation Grade A A life time of the level number of times is 3000 times; The life-span of high-class product is 6000 times; Acceptable product do not have life requirements, and are reasonable in design proper like innovation scheme, and can reach 300,000 the working life of pottery.
Operational torque is little: the sealing surface of ceramic flashboard and valve seat is a plane structure, and highly polished, the flexibility contact of contact under the stress of pad, and therefore, action required power is little.
Ceramic-seal ring and ceramic valve seat are for be in fit-state all the time, and the periphery acute angle of ceramic-seal ring can be removed the impurity that is detained on the ceramic valve seat sealing surface in the valve closing process.
Ceramic-seal ring and flashboard are for flexibly connecting, and dismounting is unloaded conveniently, can change parts very easily after the damage parts.
Description of drawings
Icon major part sign indicating number number: 1, valve body, 2, sealing seat, 3, ceramic valve seat, 4, valve seat insert, 5, ceramic-seal ring, 6, pressing plate, 7, flashboard, 8, socket head screw, 9, valve rod, 10, seal ring, 11, valve gap, 12, Pneumatic actuator, 13, handwheel.
Embodiment
Of the present invention these are described in detail through figs with other purpose advantage.
Fig. 1 is the partial sectional view of pneumatic ceramic seal Parallel gate valve Parallel slide valve.
Fig. 2 is the front outline drawing of pneumatic ceramic seal Parallel gate valve Parallel slide valve.
Fig. 3 is the side profile view of pneumatic ceramic seal Parallel gate valve Parallel slide valve.
Embodiment
In the embodiment in figure 1; Valve valve rod (9) when opening and closing drives flashboard (7) and in valve body (1), moves up and down; Valve rod (9) passes outside valve body (1) and the valve gap (11); Be connected driving by valve rod (9) with pneumatic actuating device (12) or handwheel (13), the sealing surface (5-2) on the ceramic-seal ring (5) in the sealing surface (3-1) when the gate valve full cut-off on the ceramic valve seat (3) and the flashboard (7) contacts the sealing pair that becomes valve.
On the periphery circle of flashboard (7), establish first annular groove (7-1) and second annular groove (7-2); Wherein, Wherein be equipped with seal ring (10) in first annular groove (7-1); One end of said seal ring (10) contacts with end face (5-1) on the ceramic-seal ring (5), is equipped with the state that pressing plate (6), boss (6-1) are connected to screw thread (7-3) in the flashboard (7), become to compress with boss (5-3) on the ceramic-seal ring (5) through hexagon socket head cap screw (8) in said second annular groove (7-2).
Sealing seat (2) one ends are provided with the sealed step (2-2) that can hold seal ring (4); End face (3-2) on the end face of said valve seat insert (4) and the ceramic valve seat (3) makes contact to the situation of sealing; Screw thread (1-1) engagement in the other end screw thread (2-1) of said sealing seat (2) and the valve body (1), the size of the elasticity through the screw thread (1-1) in the screw thread (2-1) on the adjustment sealing seat (2) and the valve body (1) reaches the purpose of valve seal.
Screw pair through adjustment valve body (1) and sealing seat (2), sealing surface (5-2) maintenance of valve seat insert (4) and valve seat (3), sealing surface (3-1), ceramic-seal ring (5) is connected airtight, flow to outlet flow (C) again from inlet channel (A) valve body (1) lumen (B) of flowing through with the prevention medium.The sealing means of flashboard (7) and ceramic-seal ring (5) compresses seal ring (10) through pressing plate (6) and realizes.
Valve seat insert (4), seal ring (10) but the refractory metal spirotallic gasket that normally generally uses in the valve; Its stress can be set up the primary seal of valve when low pressure, then is that pressure through fluid acts on power on the import one side flashboard, the sealing surface (3-1) of the ceramic valve seat (3) of outlet one side fitted with the sealing surface (3-2) on the ceramic-seal ring (5) closely reach the purpose of prevention media flow during high pressure.
Claims (1)
1. pneumatic ceramic seal Parallel gate valve Parallel slide valve; Characteristic is: valve valve rod (9) when opening and closing drives flashboard (7) and in valve body (1), moves up and down; Valve rod (9) passes outside valve body (1) and the valve gap (11); Be connected driving by valve rod (9) with pneumatic actuating device (12) or handwheel (13), the sealing surface (5-2) on the ceramic-seal ring (5) in sealing surface (3-1) when the gate valve full cut-off on the ceramic valve seat (3) and the flashboard (7) connects airtight;
On the periphery circle of flashboard (7), establish first annular groove (7-1) and second annular groove (7-2); Wherein, Be equipped with seal ring (10) in first annular groove (7-1); One end of said seal ring (10) contacts with end face (5-1) on the ceramic-seal ring (5), is equipped with the state that pressing plate (6), boss (6-1) are connected to screw thread (7-3) in the flashboard (7), become to compress with boss (5-3) on the ceramic-seal ring (5) through hexagon socket head cap screw (8) in said second annular groove (7-2);
Sealing seat (2) one ends are provided with the sealed step (2-2) that can hold valve seat insert (4); End face (3-2) on the end face of said valve seat insert (4) and the ceramic valve seat (3) makes contact to the situation of sealing, screw thread (1-1) bridle joint in the threaded one end (2-1) of said sealing seat (2) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203456412U CN202252047U (en) | 2011-09-06 | 2011-09-06 | Pneumatic ceramic sealing parallel gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203456412U CN202252047U (en) | 2011-09-06 | 2011-09-06 | Pneumatic ceramic sealing parallel gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252047U true CN202252047U (en) | 2012-05-30 |
Family
ID=46113290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203456412U Expired - Fee Related CN202252047U (en) | 2011-09-06 | 2011-09-06 | Pneumatic ceramic sealing parallel gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331965A (en) * | 2018-02-06 | 2018-07-27 | 中国科学院上海硅酸盐研究所 | A kind of connection structure and attaching method thereof of ceramic cartridge and metallic rod |
-
2011
- 2011-09-06 CN CN2011203456412U patent/CN202252047U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331965A (en) * | 2018-02-06 | 2018-07-27 | 中国科学院上海硅酸盐研究所 | A kind of connection structure and attaching method thereof of ceramic cartridge and metallic rod |
| CN108331965B (en) * | 2018-02-06 | 2020-07-14 | 中国科学院上海硅酸盐研究所 | Connecting structure and connecting method of ceramic valve core and metal rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105508720A (en) | Corrugated pipe stop valve for photo-thermal electricity generation fused salt | |
| CN112253776B (en) | Valve with filtering function | |
| CN202252047U (en) | Pneumatic ceramic sealing parallel gate valve | |
| CN203098876U (en) | Chlorine-gas stopping valve | |
| CN104482253A (en) | Combined valve | |
| CN103994240A (en) | Two-way hard sealing butterfly valve with movable valve seat | |
| CN212509581U (en) | High-temperature high-pressure stop valve based on labyrinth seal | |
| CN204114195U (en) | Single-lobe moushroom valve | |
| CN211039763U (en) | High-temperature high-pressure hard sealing ball valve | |
| CN209213068U (en) | A kind of water power ball valve automatically cleaning valve seat | |
| CN204004559U (en) | A kind of sampling T-way valve | |
| CN110778738A (en) | High-sulfur-resistance nickel-based alloy ball valve | |
| CN202946699U (en) | All-metal both-way pressing butterfly valve | |
| CN202171020U (en) | Millstone type material conveying double-gate valve | |
| CN208595239U (en) | A kind of valve protective device | |
| CN210068994U (en) | Pneumatic rotary disk valve | |
| CN203421190U (en) | Multi-sealing spherical butterfly valve | |
| CN202176738U (en) | Gate valve of ceramic slab with guide hole | |
| CN202369125U (en) | Pneumatic plate turning type powder body feeding valve | |
| CN202402673U (en) | Quickly-opened stop valve with sealed ceramic valve clacks | |
| CN213629005U (en) | Rigid sealing device for dome valve | |
| CN205806548U (en) | A kind of separable type lock slag valve | |
| CN218118648U (en) | Two-way sealed metal lining ceramic butterfly plate | |
| CN211398625U (en) | Double gate valve | |
| CN216843164U (en) | Sealing protection device of butterfly valve plate |
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: 20120530 Termination date: 20120906 |