CN201170341Y - Eccentric block-proof abrasion-proof ball-valve - Google Patents
Eccentric block-proof abrasion-proof ball-valve Download PDFInfo
- Publication number
- CN201170341Y CN201170341Y CNU2008200025649U CN200820002564U CN201170341Y CN 201170341 Y CN201170341 Y CN 201170341Y CN U2008200025649 U CNU2008200025649 U CN U2008200025649U CN 200820002564 U CN200820002564 U CN 200820002564U CN 201170341 Y CN201170341 Y CN 201170341Y
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- valve
- ball valve
- spheroid
- ceramic
- medium
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- Multiple-Way Valves (AREA)
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Abstract
A wearable ball valve, which adopts valve rod eccentric design and can prevent foreign matters from blocking a valve core, and relates to a partly spheriform ball valve. The ball valve can realize the performances of slight abrasion, corrosion resistance, tight seal, and the like so as to prolong service life. The ball valve is characterized in that the valve core is of a V sphericity, and rotates relative to a valve seat so as to generate a shearing force; moreover, a ceramic plate is arranged inside a V-shaped cut (as shown in a figure 1), thereby reinforcing the surface abrasion resistance of the contact part of the ball valve and medium; a sphere is provided with a ceramic seal ring; the valve seat of a valve body is also provided with a seal ring; and the medium flushes off a V-shaped surface of the sphere, while a sealing face is always positioned at a side opposite to the flow direction of the medium so as to protect the sealing face from being flushed by the medium. The wearable ball valve is used in the conveying of slurry, fiber-containing mediums, mediums containing tiny solid suspended substances, and the like. Moreover, a valve cavity can resist the impact and corrosion of fluid mediums, thereby realizing the performances of slight abrasion, corrosion resistance, tight seal, no seizure, and the like. and prolonging service life.
Description
Technical field:
The present invention relates to a kind of ball valve.Particularly a kind of employing valve rod is eccentric to be designed, and can prevent the wear-resistant valve of the stuck spool of foreign matter.
Background technique:
Valve is a kind of device of controlling fluid motion.Ball valve is a kind of cut-off valve of extensive use, is mainly used in to cut off the pipeline medium.It comprises valve body, spheroid, valve seat and actuating mechanism; On valve body, be provided with import and outlet; Valve seat is a seal ring, is located at the inlet of valve.
When valve is in opening state (shown in Figure 2), flowing medium promptly enters valve from import, flows out valve from outlet.When the action actuating mechanism, spheroid clockwise rotates, the circulation area of flowing medium reduces, flowing medium is subjected to certain restriction by the flow of valve, when actuating mechanism drive spheroid is closed fully (shown in Figure 1), the ceramic seal face of spheroid and the ceramic seal face on the valve body fit tightly flowing medium can't be passed through, valve closing, and flowing medium can not pass through from valve.
The ball valve that uses mostly is the metallic ball valve at present, and such valve is applicable to carries clean gas or liquid.When containing fiber and solid particle in the medium, the phenomenon that fiber medium and solid particle are trapped in the valve inlet place will appear, and it is not in place to cause spheroid to close, and valve produces to leak to system can't normally be moved.If valve is in the state not in place of closing for a long time, will cause valve invalidation, increase maintenance expenses.In addition, because the flow at high speed of solid particle medium has serious washing away to the V-notch of spheroid, this can cause flowing medium very serious to the wearing and tearing of metallic matrix.Cause valve to grind away in early days, cause its short in working life, maintenance, change frequent, when valve working during, because the rapid intensification of wearing and tearing groove mark of spheroid V-notch makes the wall thickness reduction of spheroid, when serious even can bring security incident at high pressure conditions.
Summary of the invention:
The present invention aims to provide the eccentric design of a kind of employing valve rod, and can prevent the wear-resistant ball valve of the stuck spool of foreign matter.It can realize the light wearing and tearing of ball valve, and is corrosion-resistant, seals performances such as tight, has solved the problem of the stuck spool of foreign matter, and has increased the service life.
The present invention includes valve body, spheroid, valve seat and actuating mechanism; On valve body, be provided with import and outlet; The sealing surface place of valve body is provided with ceramic-seal ring; Actuating mechanism is connected with spheroid, (as shown in Figure 1).
Spheroid of the present invention is provided with ceramic-seal ring; Spheroid off-centre relatively rotates the generation shearing force with valve seat; And in the V-notch of spheroid, install ceramic plate additional.
Pottery of the present invention can be a zirconia-based ceramics, alumina-based ceramic, silica-based pottery, mullite-based ceramic, silicon-nitride-based ceramic.
Operation principles of the present invention is:
Fit when tight when the ceramic-seal ring on the spheroid and the ceramic-seal ring on the valve seat, flowing medium can't enter outlet by passage, and the present invention is closed condition (shown in Figure 1).
When the actuating mechanism action, the sealing surface action that drives spheroid breaks away from the sealing surface of valve seat, and the area that passes through of flowing medium increases gradually, and flow increases gradually, and up to the valve complete opening, the flowing medium maximum flow is passed through.Complete opening of the present invention (shown in Figure 2).
Because valve body of the present invention is provided with ceramic valve seat, spheroid is provided with ceramic-seal ring, and the characteristic of the hardness height that pottery has, wear-resistant, corrosion-resistant, stable chemical performance can be resisted washing away and corroding of flowing medium, increases the service life.
In sum, the present invention is the eccentric design of a kind of employing, and can prevent the wear-resistant ball valve of the stuck spool of foreign matter.It can realize the light wearing and tearing of ball valve, and is corrosion-resistant, seals performances such as tight, has solved the problem of the stuck spool of foreign matter, and has increased the service life.
Description of drawings:
Fig. 1 is an overall structure front elevational schematic of the present invention, is closed condition.
Fig. 2 is an opening state of the present invention.
Among the figure: 1-valve body, the ceramic-seal ring on the 2-valve body, the ceramic-seal ring on the 3-spheroid, 4-import, 5-spheroid, 6-shop fixtures ceramic plate, 7-actuating mechanism, 8-outlet.
Embodiment:
With inside nominal diameter DN:300mm, the present invention of nominal pressure PN:1.0Mpa is embodiment:
The present invention is used for water ash disposal (mortar, the slag slurry) system in thermal power plant, the import 4 and the outlet 8 of valve body 1 is installed in the pipeline respectively.Ceramic-seal ring 2 on the valve body adopts zirconia-based ceramics, establishes with zirconia-based ceramics seal ring 3 at spheroid 5, adds the abrasion proof ceramic wafer protection surface layer 6 of extremely strong wear-resisting property in the V-notch of spheroid.
Under the present invention in off position, medium enters valve pocket from import 2, and the ceramic-seal ring 2 on the valve body fits tightly with the ceramic-seal ring 3 on the spheroid 5, makes outlet be sealing state, and import 4 and the pressure difference that exports between 8 are 1.0Mpa.When actuating mechanism 7 runnings, drive spheroid 5 and rotate counterclockwise, ceramic-seal ring 2 and the ceramic-seal ring on the spheroid 53 on the valve body break away from, and medium passes through, and flow increases gradually, and until complete opening, the medium maximum flow is passed through.
The utility model blowing ball valve; because spheroid adopts eccentric design; have V-notch, relatively rotate the generation shearing force, changed the state of stuck spool in the past with valve seat; and in V-notch, install abrasion proof ceramic wafer protection surface layer additional with extremely strong wear resistance; thereby stoped the erosive wear of medium effectively, improved the wear resistance of valve, prolonged the working life of valve metallic matrix; compare with existing metallic ball valve, can improve more than 10～15 times working life.
Claims (3)
1, the wear-resistant ball valve of a kind of eccentric anti-sticking is characterized in that comprising valve body, spheroid, valve seat and actuating mechanism; On valve body, be provided with import and outlet; The valve seat of valve body is provided with ceramic-seal ring; Ceramic-seal ring is installed on the spheroid; Actuating mechanism is connected with spheroid; Spheroid off-centre relatively rotates the generation shearing force with valve seat; In the V-notch of spheroid, add the abrasion proof ceramic wafer protection surface layer of extremely strong wear-resisting property; Sealing surface dorsad MEDIA FLOW to, the protection sealing surface.
2, according to the wear-resistant ball valve of the described eccentric anti-sticking of claim 1, it is characterized in that sealing surface is ceramic.
3,, it is characterized in that adding in the V-notch of spheroid the abrasion proof ceramic wafer protection surface layer of extremely strong wear-resisting property according to the wear-resistant ball valve of the described eccentric anti-sticking of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200025649U CN201170341Y (en) | 2008-01-22 | 2008-01-22 | Eccentric block-proof abrasion-proof ball-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200025649U CN201170341Y (en) | 2008-01-22 | 2008-01-22 | Eccentric block-proof abrasion-proof ball-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170341Y true CN201170341Y (en) | 2008-12-24 |
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ID=40209394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200025649U Expired - Lifetime CN201170341Y (en) | 2008-01-22 | 2008-01-22 | Eccentric block-proof abrasion-proof ball-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170341Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966752A (en) * | 2012-11-22 | 2013-03-13 | 浙江中德自控阀门有限公司 | Solid powder regulation ball valve |
-
2008
- 2008-01-22 CN CNU2008200025649U patent/CN201170341Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966752A (en) * | 2012-11-22 | 2013-03-13 | 浙江中德自控阀门有限公司 | Solid powder regulation ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Shengkai Industrial Techn Development Co., Ltd. Document name: Notification that Application Deemed not to be Proposed |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160623 Address after: 300308 No. 106 South Central Road, Tianjin Airport Economic Zone Patentee after: Shengkai (Tianjin) Industrial Co. Ltd. Address before: 300350 No. 27 Wang Hong Road, Jinnan Development Zone, Tianjin Patentee before: Tianjin Shengkai Industrial Techn Development Co., Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Shengkai Industrial Techn Development Co., Ltd. Document name: Notification of Passing Examination on Formalities |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081224 |