CN201531643U - Hard seal structure of ball valve - Google Patents
Hard seal structure of ball valve Download PDFInfo
- Publication number
- CN201531643U CN201531643U CN2009203105461U CN200920310546U CN201531643U CN 201531643 U CN201531643 U CN 201531643U CN 2009203105461 U CN2009203105461 U CN 2009203105461U CN 200920310546 U CN200920310546 U CN 200920310546U CN 201531643 U CN201531643 U CN 201531643U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- ball valve
- valve
- arc
- sealing
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 238000000576 coating method Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 2
- 239000011805 ball Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010286 high velocity air fuel Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model discloses a ball valve, in particular relates to a hard seal structure of a ball valve. The hard seal structure comprises a valve seat (4) and a spherical valve core (2) which are in slide fit with each other. On the radial cross section of the valve seat (4), the sealing face of the valve seat (4) is arc-shaped to form a surface sealing structure, the effective sealing area of the actual generated sealing performance is large, the ball valve can adapt to working conditions with solid particles, dust, pulp stock and other media, and is suitable for the use in production process of petroleum, petrification, chemical engineering, energy, mineral industries, etc.
Description
Technical field
The utility model relates to a kind of ball valve, especially a kind of hard sealing structure of ball valve.
Background technique
Ball valve is a kind of valve that comes out the fifties in last century, and at present, ball valve has developed into a kind of main valve class.In evolution constantly, along with the application of modern science and technology on ball valve is made, for example application of spraying technology and technology, some hard seal ball valves arise at the historic moment, and make that the application of ball valve is more extensive.
But present hard seal ball valve, spheroid spool and valve seat all are to adopt metal material matrix, according to the different different coatings of working condition requirement spraying hardness.From along valve seat cross section radially, the sealing surface of spheroid spool is a camber line, the sealing surface of valve seat is a straight line, therefore the sealing configuration of spheroid spool and valve seat formation is the linear sealing structure, effective sealing area of actual generation sealability is less, and in containing medium operating mode using processs such as solid particle, dust, slurry, the keying of ball valve requires spheroid to do 90 ° of rotations, linear sealing is easier to by dielectric breakdowns such as solid particle, dust, slurries, and ball valve will produce leakage.
The model utility content
In order to overcome existing deficiency, technical problem to be solved in the utility model provides a kind of hard sealing structure that can adapt to the ball valve of medium operating modes such as containing solid particle, dust, slurry.
The technological scheme that its technical problem that solves the utility model adopts is: the hard sealing structure of ball valve, constitute by valve seat that is slidingly matched and spherical valve core, and along on the valve seat cross section radially, the sealing surface of described valve seat is an arc.
Further, be positioned at the arc two ends on the described valve seat and be provided with the cutting edge structure that contacts with the spheroid spool.
As a kind of preferred version, described arc is the radius of curvature circular arc consistent with the radius of spheroid spool.
The beneficial effects of the utility model are: by the arc sealing surface of valve seat, spheroid spool and valve seat form is sealed into surface seal structure, the actual effective sealing area that produces sealability obviously increases, be equivalent to the stack of numerous linear sealing pair, the sealability that produces just strengthens greatly, longer service life can adapt to medium operating modes such as containing solid particle, dust, slurry.Simultaneously, the two ends cutting edge structure can be cleared up media such as the solid particle that is attached on the sphere core, dust, slurry in spheroid spool rotary course, avoids medium to enter between the fitting surface and destroys sealing, further improves sealability, increases service time.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1, the hard sealing structure of ball valve of the present utility model is made of valve seat 4 that is slidingly matched and spherical valve core 2, and along on valve seat 4 cross section radially, the sealing surface of described valve seat 4 is arcs.Valve seat 4 and spherical valve core 2 are arranged in the valve body 1.
Above-mentioned sealing surface is the fitting surface that valve seat 4 and spherical valve core 2 are slidingly matched, the surface seal structure that is sealed into that the arc design makes spheroid spool 2 and valve seat 4 formation, the actual effective sealing area that produces sealability obviously increases, be equivalent to the stack of numerous linear sealing pair, the sealability that produces just strengthens greatly, longer service life can adapt to medium operating modes such as containing solid particle, dust, slurry.Above-mentioned arc can be a radius of curvature less than, the arc that equals, constitute greater than the radius arbitrary circular arc or the free form surface of spheroid spool 2.
In order further to improve sealability, increase service time, be positioned at the arc two ends on the above-mentioned valve seat 4 and be provided with the cutting edge structure that contacts with spheroid spool 2.The two ends cutting edge structure can be cleared up media such as the solid particle that is attached on the sphere core 2, dust, slurry in spheroid spool 2 rotary courses, avoid medium to enter between the fitting surface and destroy sealing.
For simplified manufacturing technique under the prerequisite that guarantees usability, concrete, above-mentioned arc is the radius of curvature circular arc consistent with the radius of spheroid spool 23.At this moment, the actual effective sealing area maximum that produces sealability, and circular arc 3 two ends contact naturally with spheroid spool 2 surfaces, under the prerequisite that arc transition is not set, formation cutting edge structure naturally can simplified manufacturing technique, reduces cost.
In order further to improve the durability of sealing, the sealing surface surface-coated of described valve seat 4 and spherical valve core 2 has metallic coating.Concrete, be metallic coating by the densification that extremely strong caking ability is arranged of HVAF formation, coating hardness is difficult for being scratched by the impurity in the medium and washing away high temperature resistant, wear-resistant, anti-washing away up to 68-72HRC.Coating can be selected different coating material and different spraying coating process according to the difference of working condition.
Claims (4)
1. the hard sealing structure of ball valve is made of valve seat that is slidingly matched (4) and spherical valve core (2), it is characterized in that: along on valve seat (4) cross section radially, the sealing surface of described valve seat (4) is an arc.
2. the hard sealing structure of ball valve as claimed in claim 1 is characterized in that: be positioned at the arc two ends on the described valve seat (4) and be provided with the cutting edge structure that contacts with spheroid spool (2).
3. the hard sealing structure of ball valve as claimed in claim 2, it is characterized in that: described arc is the radius of curvature circular arc (3) consistent with the radius of spheroid spool (2).
4. as the hard sealing structure of claim 1,2 or 3 described ball valves, it is characterized in that: the sealing surface surface-coated of described valve seat (4) and spherical valve core (2) has metallic coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203105461U CN201531643U (en) | 2009-09-16 | 2009-09-16 | Hard seal structure of ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203105461U CN201531643U (en) | 2009-09-16 | 2009-09-16 | Hard seal structure of ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531643U true CN201531643U (en) | 2010-07-21 |
Family
ID=42527047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203105461U Expired - Fee Related CN201531643U (en) | 2009-09-16 | 2009-09-16 | Hard seal structure of ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531643U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537401A (en) * | 2011-12-26 | 2012-07-04 | 吴忠仪表有限责任公司 | Hard seal ball valve |
| CN104344003A (en) * | 2013-08-09 | 2015-02-11 | 林铖 | Ball valve blockage preventing mechanism |
| TWI859575B (en) | 2022-09-02 | 2024-10-21 | 鴻皇企業有限公司 | Ball switch valve for conveying tap water |
-
2009
- 2009-09-16 CN CN2009203105461U patent/CN201531643U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537401A (en) * | 2011-12-26 | 2012-07-04 | 吴忠仪表有限责任公司 | Hard seal ball valve |
| CN104344003A (en) * | 2013-08-09 | 2015-02-11 | 林铖 | Ball valve blockage preventing mechanism |
| TWI859575B (en) | 2022-09-02 | 2024-10-21 | 鴻皇企業有限公司 | Ball switch valve for conveying tap water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hard seal structure of ball valve Effective date of registration: 20140212 Granted publication date: 20100721 Pledgee: Chengdu technology transfer (Group) Co.,Ltd. Pledgor: SICHUAN SUC FLOW CONTROL EQUIPMENT Co.,Ltd. Registration number: 2014990000102 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20150916 |
|
| EXPY | Termination of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231206 Granted publication date: 20100721 Pledgee: Chengdu technology transfer (Group) Co.,Ltd. Pledgor: SICHUAN SUC FLOW CONTROL EQUIPMENT Co.,Ltd. Registration number: 2014990000102 |