CN201284842Y - Up-mounted eccentric semi-sphere ball valve - Google Patents
Up-mounted eccentric semi-sphere ball valve Download PDFInfo
- Publication number
- CN201284842Y CN201284842Y CNU2008201668617U CN200820166861U CN201284842Y CN 201284842 Y CN201284842 Y CN 201284842Y CN U2008201668617 U CNU2008201668617 U CN U2008201668617U CN 200820166861 U CN200820166861 U CN 200820166861U CN 201284842 Y CN201284842 Y CN 201284842Y
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- CN
- China
- Prior art keywords
- valve
- valve rod
- spherical crown
- sphere
- ball valve
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- 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
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- Lift Valve (AREA)
Abstract
The utility model relates to a top-mounted eccentric half ball valve which comprises a valve body, a valve rod, a sphere, a valve seat, a valve cover, a transmission mechanism, a seal piece and a mounting piece. The valve rod consists of an upper valve rod and a lower valve rod; the upper head face and the lower head face of the sphere are respectively and fixedly connected with the upper valve rod and the lower valve rod; the essential is that a spherical crown is fixedly installed on the sphere; and the spherical crown is provided with a seal surface which matches with the seal surface of the valve seat. The sphere can be made of common material and the spherical crown can be made of hard material or be processed with spray welding treatment through hard material. In this way, the seal surfaces can be wear resistant, and the fabricating cost is low. When the seal surfaces are worn and torn, only the spherical crown and the valve seat are necessary to be replaced and the sealing requirement can be satisfied, thus prolonging the service life of the product. The top-mounted eccentric half ball valve is applicable for various medium pipelines.
Description
Technical field
The utility model relates to a kind of ball valve, particularly about a kind of eccentric semi-spherical ball valve.
Background technique
Ball valve becomes the valve products of the widespread usage in each field because of flow resistance simple in structure, no, open-close convenient.Its structure generally is made up of valve body, valve rod, spheroid, valve seat, valve gap and Sealing and assembling set, divides hard seal ball valve and soft sealing ball valve two big classes.So-called hard seal ball valve, be between ball seal face and the sealing surface of seat for metal and metal are in contact with one another sealing, its major advantage is to use the temperature height, major defect is easy to wear between ball seal face and the sealing surface of seat in the opening-closing process, product is short working life, the manufacture cost height.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides a kind of long product lifecycle, the last dress formula eccentric semi-spherical ball valve that cost is low.
The technical solution of the utility model comprises valve body, valve rod, spheroid, valve seat, valve gap, driving mechanism and Sealing and assembling set, valve rod is made up of upper valve rod and lower valve rod, fixedly connected with lower valve rod with upper valve rod respectively in the upper and lower end face of spheroid, mainly be fixed installation one spherical crown on spheroid, this spherical crown is shaped on the sealing surface that cooperatively interacts with sealing surface of seat.
In above technological scheme, be provided with packing box between upper valve rod and the valve gap.
The utility model has the advantages that a spherical crown is set between spheroid and valve seat, spheroid can adopt common material, and spherical crown adopts hard material or handles by the hard material surfacing, reaches the sealing surface abrasion resistance properties, low cost of manufacture.And only need behind the sealing surface wear to change spherical crown and valve seat, can reach seal request, prolong product working life.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Embodiment
Last dress formula eccentric semi-spherical ball valve as shown in Figure 1, comprise valve body 2, valve rod, spheroid 7, valve seat 5, valve gap 8, driving mechanism and Sealing and assembling set, valve rod is made up of upper valve rod 9 and lower valve rod 3, spheroid 7 is a semiglobe, fixedlying connected with lower valve rod 3 with upper valve rod 9 respectively in its upper and lower end face, adopts eccentric the connection between spheroid 7 and the valve rod.Fixed installation one spherical crown 6 on spheroid 7, this spherical crown 6 adopts hard material or sealing surface to adopt the hard material surfacing, grind with valve seat 5 pairings and form the sealing surface that cooperatively interacts, and spheroid 7 adopts general made, can reduce product cost.Valve seat 5 is installed in valve body 2 passages by pressing plate 4, behind the sealing surface wear between spheroid 7 and the valve seat 5, only needs to change spherical crown 6 and valve seat 5 can reach usage requirement, prolongs product working life.Be provided with packing box 10 between valve gap 8 and the upper valve rod 9, stuffing box packing 11 is installed in the packing box 10, is press-fited by Gland 12.Driving mechanism is installed on the valve gap 8 by support 13, and lower valve rod 3 is by lower cover 1 sealing.
Claims (2)
1, a kind of dress formula eccentric semi-spherical ball valve of going up, comprise valve body (2), valve rod, spheroid (7), valve seat (5), valve gap (8), driving mechanism and Sealing and assembling set, valve rod is made up of upper valve rod (9) and lower valve rod (3), fixedly connected with lower valve rod (3) with upper valve rod (9) respectively in the upper and lower end face of spheroid (7), it is characterized in that going up fixed installation one spherical crown (6) at spheroid (7), this spherical crown (6) is shaped on the sealing surface that cooperatively interacts with valve seat (5) sealing surface.
2, the dress formula eccentric semi-spherical ball valve of going up according to claim 1 is characterized in that being provided with packing box (10) between upper valve rod (9) and the valve gap (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201668617U CN201284842Y (en) | 2008-10-23 | 2008-10-23 | Up-mounted eccentric semi-sphere ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201668617U CN201284842Y (en) | 2008-10-23 | 2008-10-23 | Up-mounted eccentric semi-sphere ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284842Y true CN201284842Y (en) | 2009-08-05 |
Family
ID=40949827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201668617U Expired - Fee Related CN201284842Y (en) | 2008-10-23 | 2008-10-23 | Up-mounted eccentric semi-sphere ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201284842Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869782A (en) * | 2018-07-01 | 2018-11-23 | 张大伟 | A kind of modernization green house of vegetables spraying system valve |
-
2008
- 2008-10-23 CN CNU2008201668617U patent/CN201284842Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869782A (en) * | 2018-07-01 | 2018-11-23 | 张大伟 | A kind of modernization green house of vegetables spraying system valve |
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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: 20090805 Termination date: 20091123 |