CN101555950A - Disc type hard seal ball valve - Google Patents
Disc type hard seal ball valve Download PDFInfo
- Publication number
- CN101555950A CN101555950A CNA2009103025688A CN200910302568A CN101555950A CN 101555950 A CN101555950 A CN 101555950A CN A2009103025688 A CNA2009103025688 A CN A2009103025688A CN 200910302568 A CN200910302568 A CN 200910302568A CN 101555950 A CN101555950 A CN 101555950A
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- valve
- disc type
- type hard
- ball valve
- hard seal
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Abstract
The invention relates to a disc type hard seal ball valve which comprises a valve core and a valve seat, and is characterized in that: the upper surface and the lower surface of the valve core take the shape of a plane; the side surface of the valve core is formed by the rotation of an externally convex arc line or straight line around a central axis for a cycle; and the sealing surface of the valve seat is matched with the side surface of the valve core. As the valve core of the disc type hard seal ball valve generally takes the shape of a disc or a circular cone, the closure member is changed into the disc or the circular cone from a ball body; the precision of the ball body is hard to control while the achieving for the precision processing of the disc or the circular cone is easier comparatively, and the requirement for the processing equipment is relatively lower, thereby fundamentally improving the processing property of the closure member, shortening the production period and reducing the manufacturing cost, finding out a way to a simple manufacturing process, and simultaneously lowering the consumption of raw materials.
Description
Technical field
The present invention relates to a kind of ball valve, particularly disc type hard seal ball valve.
Background technique
Traditional ball valve generally comprises a valve body, the spheroid as spool, valve seat, handwheel and valve rod etc.Spool is provided with passing hole and can be rotatably set in the valve pocket of valve body, the sphere and the sealing surface of seat of spool match, handwheel is fixed on an end of valve rod, and the other end of valve rod is connected with spool, and the position of adjusting passing hole and valve seat valve port by rotary spool concerns the purpose that reaches switch valve.Ball valve is main on pipeline to be done cut-out, distribution and changes the media flow direction to use.Ball valve because possess, so fluid resistance is little, compact structure, volume are little, in light weight, the very wide output average annual growth of reliable, easy to operate, the easy to maintenance Applicable scope of sealing.
Ball valve is for sealing reliably, guarantee sealability, valve seat and must remove to process spheroid according to same molding surface size as the sealing surface between the spheroid of spool, its sealability depends on the machining accuracy of sealing surface and mutual Percent of contact area, be exactly the conformity that spheroid cooperates with the valve seat outer mold surface, this has increased the difficulty of processing greatly.Because have out of roundness unavoidably with general apparatus processing spheroid, the valve seat of manufacturing with metal again must be the same with spheroid form, and practice shows that this is difficult to reach.In order to guarantee excellent sealing, can only importer's external equipment process, strengthened the input of enterprise, improved processing cost.In addition, the principle of ball valve is exactly that a short tube forms along middle rotation of valve in fact.The track that short tube rotates is not a ball, but a disk, the material of part is unnecessary beyond the disk, has caused the waste of material, has increased cost.
Summary of the invention
The objective of the invention is to provides for overcoming the deficiencies in the prior art that a kind of processing technology is simple, cost is low and the disc type hard seal ball valve of good seal performance.
For achieving the above object, the invention provides a kind of disc type hard seal ball valve, comprise spool and valve seat, it is characterized in that: the top and bottom of described spool are the plane, the side is rotated a circle around central shaft by the camber line of evagination or straight line and forms, and the sealing surface of described valve seat and the side of spool match.
Compared with prior art, because the shape of this disc type hard seal ball valve spool is in the form of annular discs or circular cone shape substantially, like this closure member is become disk or round platform by spheroid, the spheroid precision is difficult to control, and the processing of disk or round platform precision reach much easier comparatively speaking, process equipment is required also relatively low, so just fundamentally improved the closure member processability, having shortened the manufacture cycle subtracts and has fallen manufacture cost, has walked out a simple and direct manufacture process.Also saved raw-material consumption simultaneously.
The invention will be further described below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Accompanying drawing 1 is the specific embodiment of the invention 1 a structure sectional view;
Accompanying drawing 2 is the specific embodiment of the invention 2 structure sectional views;
Embodiment
Specific embodiment 1: as shown in Figure 1, disc type hard seal ball valve comprises handwheel 8, valve rod 5, valve gap 4, valve body 1, spool 3 and valve seat.The side of spool 3 by the circular arc line segment of evagination around central shaft rotate a circle form in the form of annular discs, center, spool 3 side is provided with the passing hole vertical with being provided with central shaft, spool 3 bottom centre are provided with the protruding axle of pressure bearing 2 bearing supports and location and can be rotatably set in the valve pocket of valve body 1, the arc surface of sealing surface of seat and spool 3 matches, handwheel 8 is fixed on an end of valve rod 5, the other end of valve rod 5 is connected with spool 3, and by valve gap 4, Packing seat 6, filler 7 and Gland 9 sealings.The height of spool 3 satisfy stimulate the menstrual flow and withstand voltage prerequisite under can reduce as far as possible, to save raw materials consumption as far as possible.
Specific embodiment 2: in specific embodiment 1, the side of spool 3 be by the circular arc line segment of evagination around central shaft rotate a circle form in the form of annular discs, therefore still need the processing part sphere, in order further to reduce difficulty of processing, as shown in Figure 2, in this specific embodiment, the side of spool 3 rotates a circle around central shaft by the straightway that tilts with central shaft or by the straightway that parallels with central shaft and forms, all the other structures are similar to above-mentioned specific embodiment, the integral body of spool 3 is circular cone or cylinder table shape, so the sealing surface of spool 3 and valve seat is conical surface or cylndrical surface, machining accuracy is easy to reach, having shortened the manufacture cycle greatly subtracts and has fallen manufacture cost, and has improved the quality of product.
Claims (4)
1. a disc type hard seal ball valve comprises spool and valve seat, it is characterized in that: the top and bottom of described spool are the plane, and the side is rotated a circle around central shaft by the camber line of evagination or straight line and forms, and the sealing surface of described valve seat and the side of spool match.
2. disc type hard seal ball valve according to claim 1 is characterized in that: the side of described spool is rotated a circle around central shaft by the circular arc line segment of evagination and forms.
3. disc type hard seal ball valve according to claim 1 is characterized in that: the side of described spool is rotated a circle around central shaft by the straightway that parallels with central shaft and forms.
4. disc type hard seal ball valve according to claim 1 is characterized in that: the side of described spool is rotated a circle around central shaft by the straightway that tilts with central shaft and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009103025688A CN101555950A (en) | 2009-05-25 | 2009-05-25 | Disc type hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009103025688A CN101555950A (en) | 2009-05-25 | 2009-05-25 | Disc type hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101555950A true CN101555950A (en) | 2009-10-14 |
Family
ID=41174178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009103025688A Pending CN101555950A (en) | 2009-05-25 | 2009-05-25 | Disc type hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101555950A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606221A (en) * | 2017-11-07 | 2018-01-19 | 蔡万君 | A kind of valve core rotation device for controlling ball valve |
| CN113700891A (en) * | 2021-11-01 | 2021-11-26 | 烟台金泰美林科技股份有限公司 | Double-lining wear-resistant corrosion-resistant ceramic ball valve |
-
2009
- 2009-05-25 CN CNA2009103025688A patent/CN101555950A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606221A (en) * | 2017-11-07 | 2018-01-19 | 蔡万君 | A kind of valve core rotation device for controlling ball valve |
| CN113700891A (en) * | 2021-11-01 | 2021-11-26 | 烟台金泰美林科技股份有限公司 | Double-lining wear-resistant corrosion-resistant ceramic ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091014 |