CN2389269Y - Metal sealed ball valve - Google Patents
Metal sealed ball valve Download PDFInfo
- Publication number
- CN2389269Y CN2389269Y CN 99239355 CN99239355U CN2389269Y CN 2389269 Y CN2389269 Y CN 2389269Y CN 99239355 CN99239355 CN 99239355 CN 99239355 U CN99239355 U CN 99239355U CN 2389269 Y CN2389269 Y CN 2389269Y
- Authority
- CN
- China
- Prior art keywords
- valve
- ring
- metal
- valve body
- seal
- 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
Abstract
The utility model relates to a metal seal ball valve which is composed of a drive device, a valve rod (4), a valve cap (11), a valve body (8), a valve seat (7), a ball core (9) and a sealing mechanism for the valve rod. The utility model is characterized in that the valve seat (7) is composed of a pressing ring (12), a sealing ring and a winding cushion ring, and is arranged in the valve cap (11), and the sealing ring is an interlayer sealing ring which is composed of a metal plate (13) and a non-metal plate (14); the winding cushion ring (15) is arranged at the bottom of the sealing ring, and is arranged in the valve body (8) or the valve cap (11) by the pressing ring (12). The utility model has the advantages that the sealing ring has the functions of pre-tension and compensation, and the favorable sealing performance can be kept under any conditions.
Description
The utility model relates to ball valve, relates in particular to the metal seal ball valve of high temperature high voltage resistant.
Existing ball valve is because the employing high molecular synthetic material is a valve seat, maximum operation (service) temperature is lower than 200 ℃, be much higher than metal with expansion coefficient to plastics, temperature is too high can produce surpass yield strength from strain, and temperature just can be out of shape contraction when descending, cause leakage, in addition, operate when frequent, being extruded part can be worn very soon, also cause leakage,, a lot of metal seal ball valves once occurred for addressing the above problem, but, sealing is Metal Contact because paying, lack flexibility, easy to wear, so sealing is still undesirable.
The purpose of this utility model is to avoid above-mentioned deficiency and is provided at high temperature or the equal good metal seal ball-valve of low temperature lower seal performance.
The purpose of this utility model can reach by following technical solution: be made up of drive unit, valve rod, valve gap, valve body, valve seat, ball core, valve stem seal mechanism, valve gap is fixed on the valve body, the valve rod lower end connects with the ball core, the ball core places in the valve body, and cooperate with valve seat, it is characterized in that: valve seat is made up of trim ring, seal ring, winding packing ring, device twines packing ring and places bottom the interlayer seal ring of being made up of sheet metal and non-metal board, is installed in valve body or the valve gap by trim ring on valve gap or valve body.
The utility model advantage: its seal ring can play pretension and compensating action again can be high temperature resistant, therefore the utlity model has fabulous sealability.
Below in conjunction with accompanying drawing the utility model is described in detail:
Accompanying drawing 1 is the utility model structural drawing.
Accompanying drawing 2 is the utility model valve seat construction figure.
As accompanying drawing 1, shown in 2, the utility model is by handle 6, valve rod 4, valve gap 11, valve body 8, valve seat 7, ball core 9, valve rod 4 sealing mechanisms are formed, by positioning block 3 location, valve gap 11 is fixed on the valve body 8, the joint sealing is provided with packing ring 10, tighten valve gap, the valve body connecting bolt can guarantee sealing, valve rod 4 lower ends connect with ball core 9, ball core 9 places valve body 8 inner caps to contact with valve seat 7 sealings, valve seat 7 is by trim ring 12, seal ring, twining packing ring 15 forms, device is in valve gap 11 or valve body 8, the interlayer seal ring that seal ring is made up of sheet metal 13 and non-metal board 14, winding packing ring 15 places the bottom of seal ring, be installed in valve body or the valve gap by trim ring 12, the sheet metal 13 of seal ring is a carbon steel, stainless steel, alloyed steel, non-metal board 14 is property graphite cakes, teflon, sheet metal 13 can be formed multi-level interlayer seal ring with non-metal board 14, if sealing material adopts sheet metal and teflon, the valve serviceability temperature is a normal temperature, if adopt sheet metal and Expanded graphite, serviceability temperature can be above 600 ℃.In addition, because the seal ring bottom is provided with stainless steel and twines packing ring 15, make the seal ring lower curtate break away from valve body 8 inwalls and produce certain space, when ball core 9 is pressed on the valve seat insert, seal ring produces distortion and high resilience, play pretension and compensating action, therefore the utlity model has fabulous sealability.Valve stem seal mechanism is made up of filler 1, Gland 2, Gland 2 by bolt device on valve gap 11, be prior art, valve rod 4 is a down-mounting type, valve rod 4 lower end parts have step, device thrust-bearing 5 above the step, and valve rod adopts down-mounting type to prevent that the valve rod pressurized from flying out, drive unit can be lever drive, surges, drive unit such as pneumatic, electronic, worm and gear.
Claims (2)
1, a kind of metal seal ball valve, by drive unit, valve rod (4), valve gap (11), valve body (8), valve seat (7), ball core (9), valve stem seal mechanism forms, valve gap (11) is fixed on the valve body (8), valve rod (4) lower end connects with ball core (9), ball core (9) places in the valve body (8) and with valve seat (7) and cooperates, it is characterized in that: valve seat (7) is by trim ring (12), seal ring, twining packing ring (15) forms, device twines packing ring (15) and places the interlayer seal ring bottom of being made up of sheet metal (13) and non-metal board (14) in valve gap (11) or valve body (8), be installed in valve body (8) or the valve gap (11) by trim ring (12).
2, must ask 1 described metal seal ball valve by power, it is characterized in that: the sheet metal of seal ring (13) is that carbon steel board, corrosion resistant plate, alloyed steel, non-metal board (14) are graphite cakes, teflon etc., sheet metal (13) non-metal board (14) can be formed multi-level interlayer seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239355 CN2389269Y (en) | 1999-08-19 | 1999-08-19 | Metal sealed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239355 CN2389269Y (en) | 1999-08-19 | 1999-08-19 | Metal sealed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2389269Y true CN2389269Y (en) | 2000-07-26 |
Family
ID=34026632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99239355 Expired - Fee Related CN2389269Y (en) | 1999-08-19 | 1999-08-19 | Metal sealed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2389269Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252105A (en) * | 2011-07-14 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Seal structure of three-eccentric cut-off butterfly valve for blast furnace |
| CN103206555A (en) * | 2013-04-09 | 2013-07-17 | 张家港市科辰仪表有限公司 | V-shaped regulating ball valve |
| CN110043683A (en) * | 2018-01-16 | 2019-07-23 | 深圳市飞托克实业有限公司 | Valve |
-
1999
- 1999-08-19 CN CN 99239355 patent/CN2389269Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252105A (en) * | 2011-07-14 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Seal structure of three-eccentric cut-off butterfly valve for blast furnace |
| CN103206555A (en) * | 2013-04-09 | 2013-07-17 | 张家港市科辰仪表有限公司 | V-shaped regulating ball valve |
| CN110043683A (en) * | 2018-01-16 | 2019-07-23 | 深圳市飞托克实业有限公司 | Valve |
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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 |