CN203906858U - Metal valve seat sealing ball valve with improved structure - Google Patents
Metal valve seat sealing ball valve with improved structure Download PDFInfo
- Publication number
- CN203906858U CN203906858U CN201420166054.0U CN201420166054U CN203906858U CN 203906858 U CN203906858 U CN 203906858U CN 201420166054 U CN201420166054 U CN 201420166054U CN 203906858 U CN203906858 U CN 203906858U
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- valve seat
- valve
- ball
- sealing
- ball core
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Abstract
The utility model belongs to the technical field of chemical equipment, and particularly relates to a metal valve seat sealing ball valve with an improved structure. The metal valve seat sealing ball valve comprises a valve body, a valve core and a valve seat, and is characterized in that the valve core is a ball core which is of an asymmetrical structure and is formed by forming hard alloys on the surfaces of SUS410 materials through deposit welding, and the surface hardness of the ball core is HRC60; the valve seat is formed by forming hard alloys on the sealing surfaces of 316 materials through deposit welding, and the surface hardness of the valve seat is HRC50 to HRC55; the back side of one end of the valve seat is supported by adopting a disc spring, graphite sealing rings are respectively pressed at the two ends of the disc spring and are used for sealing the valve seat and the end surface of valve body, and the back side of the other end of the valve seat is supported by the disc spring and is used for pushing the valve seat to be tightly pasted with the ball core; the lower part of the ball core is provided with a hole, and a guide sleeve subjected to hardening treatment is embedded into the hole. The metal valve seat sealing ball valve has the advantages that the sealing performance is better when the medium pressure is higher, and meanwhile, the failure due to valve seat damage and overlarge disc spring deformation under the overload condition is limited by the guide sleeve.
Description
Technical field
The utility model belongs to technical field of chemical, be specifically related to a kind of metal seat valve seal ball-valve that improves structure, especially for high temperature and high pressure, and solid particle, in powder and liquid, contain solid particle, medium is the thick metal seat valve seal ball-valve waiting under environment.
Background technique: for the metal seal ball valve under bad working environments, particularly at high temperature and high pressure, and solid particle, in powder and liquid, contain solid particle, medium is thick grade under environment, existing metal seal ball valve generally there will be valve torque to increase under this environment, bite, the problems such as rate of fault height.
Summary of the invention
The purpose of this utility model is for above-mentioned present situation, and a kind of metal seat valve seal ball-valve that improves structure proposing.
The utility model is achieved like this: improve the metal seat valve seal ball-valve of structure, comprise valve body, spool and valve seat, it is characterized in that described spool is the dissymmetrical structure ball core of SUS410 material surface pile-up welding hard alloy, ball wicking surface hardness is HRC60; Described valve seat is 316 material sealing surface weld deposit cemented carbide, and valve base surface hardness is HRc50-55; The back side, one end of valve seat adopts dish spring to support, and dish spring two ends are all pressed with carbon seal ring for valve seat and valve body end face seal, and the other end back side of valve seat adopts the support of dish spring to be used for promoting valve seat and ball core is adjacent to; Described ball core bottom is porose, is bumped into the guide pin bushing through cure process.
The utility model also comprises the known valve rod in this field, Gland, filler, valve gap, stage clip, spring seat and the axis of guide etc.
Metal seal ball valve of the present utility model, ball core matter is SUS410 surface overlaying cemented carbide, valve seat material is 316, sealing surface weld deposit cemented carbide, ball wicking surface hardness is HRC60, valve base surface hardness is slightly low, is HRc50-55.The sealing surface of valve seat is wider, needs pairing to grind after processing.In structure, adopt the valve seat back side, one end to adopt dish spring to support, dish spring two ends are all pressed with carbon seal ring; Due to the compressed graphite seal ring simultaneously of two ends after dish spring pressurized, carbon seal ring is by valve seat and valve body end face seal.Behind the other end valve seat back side, also adopt dish spring to support, only for promoting valve seat and ball core is adjacent to.The dish spring at two ends act as the adhesive force of pretension valve seat and ball core.Ball core bottom is porose, is bumped into the guide pin bushing through cure process.
This ball seat adopts asymmetrical design, structure is different from fixing ball and floating ball, when use, high voltage terminal medium promotes ball and low voltage terminal valve seat is adjacent to, simultaneously, the lower axis of guide can limit the distance of ball core, controls the amount of deformation of dish spring, is unlikely to inlet pressure to be all delivered to the connection part of major-minor valve body.
Advantage of the present utility model: pressure medium is higher, sealing is better, and the damage of situation lower valve base and dish spring that while guide pin bushing has limited overload are out of shape excessive inefficacy.
Brief description of the drawings
Accompanying drawing 1 is the utility model embodiment's structural representation.
In figure, 1-valve rod; 2-Gland; 3-stage clip 4-filler; 5-valve gap; 6-valve body; 7-valve seat; 8-dish spring; 9-ball core; 10-carbon seal ring; 11-spring seat; 12-guide pin bushing; The 13-axis of guide.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail.
Embodiment: improve the metal seat valve seal ball-valve of structure as shown in Figure 1, mainly comprise valve body 6, spool and valve seat 7, its main feature is that described spool is the dissymmetrical structure ball core 9 of SUS410 material surface pile-up welding hard alloy, and ball core 9 surface hardnesses are HRC60; Described valve seat 7 is 316 material sealing surface weld deposit cemented carbide, and valve seat 7 surface hardnesses are HRc50-55; The back side, one end of valve seat 7 adopts dish spring 8 to support, and dish spring 8 two ends are all pressed with carbon seal ring 10 for valve seat 7 and valve body 6 end face seals, and the other end back side of valve seat 7 adopts 8 supports of dish spring to be used for promoting valve seat 7 and is adjacent to ball core 9; Described ball core 9 bottoms are porose, are bumped into the guide pin bushing 12 through cure process.
In embodiment, also comprise the valve fittings that this field is conventional, valve rod 1, Gland 2, filler 4, valve gap 5, stage clip 3, spring seat 11 and the axis of guide 13 etc.
Embodiment's ball core 9 materials are SUS410 surface overlaying cemented carbide, and valve seat 7 materials are 316, sealing surface weld deposit cemented carbide, and ball wicking surface hardness is HRC60, valve base surface hardness is slightly low, is HRc50-55.The sealing surface of valve seat is wider, needs pairing to grind after processing.In structure, adopt the valve seat back side, one end to adopt dish spring 8 to support, dish spring two ends are all pressed with carbon seal ring; Due to the compressed graphite seal ring simultaneously of two ends after dish spring pressurized, carbon seal ring is by valve seat and valve body end face seal.Behind the other end valve seat back side, also adopt dish spring 8 to support, only for promoting valve seat and ball core is adjacent to.The dish spring at two ends act as the adhesive force of pretension valve seat and ball core.Ball core bottom is porose, is bumped into the guide pin bushing through cure process.
When use, high voltage terminal medium promotes ball and low voltage terminal valve seat is adjacent to, and meanwhile, the lower axis of guide can limit the distance of ball core, controls the amount of deformation of dish spring, is unlikely to inlet pressure to be all delivered to the connection part of major-minor valve body.
Claims (1)
1. a metal seat valve seal ball-valve that improves structure, comprises valve body, spool and valve seat, it is characterized in that described spool is the dissymmetrical structure ball core of SUS410 material surface pile-up welding hard alloy, and ball wicking surface hardness is HRC60; Described valve seat is 316 material sealing surface weld deposit cemented carbide, and valve base surface hardness is HRc50-55; The back side, one end of valve seat adopts dish spring to support, and dish spring two ends are all pressed with carbon seal ring for valve seat and valve body end face seal, and the other end back side of valve seat adopts the support of dish spring to be used for promoting valve seat and ball core is adjacent to; Described ball core bottom is porose, is bumped into the guide pin bushing through cure process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166054.0U CN203906858U (en) | 2014-04-08 | 2014-04-08 | Metal valve seat sealing ball valve with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166054.0U CN203906858U (en) | 2014-04-08 | 2014-04-08 | Metal valve seat sealing ball valve with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906858U true CN203906858U (en) | 2014-10-29 |
Family
ID=51781139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420166054.0U Expired - Fee Related CN203906858U (en) | 2014-04-08 | 2014-04-08 | Metal valve seat sealing ball valve with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094534A (en) * | 2019-04-24 | 2019-08-06 | 哈电集团哈尔滨电站阀门有限公司 | A kind of spring compensating type movable valve seat plug valve |
-
2014
- 2014-04-08 CN CN201420166054.0U patent/CN203906858U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094534A (en) * | 2019-04-24 | 2019-08-06 | 哈电集团哈尔滨电站阀门有限公司 | A kind of spring compensating type movable valve seat plug valve |
| CN110094534B (en) * | 2019-04-24 | 2024-04-30 | 哈电集团哈尔滨电站阀门有限公司 | Spring compensation type movable valve seat plug valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20160408 |