CN201262250Y - Metal hard seal ball valve - Google Patents
Metal hard seal ball valve Download PDFInfo
- Publication number
- CN201262250Y CN201262250Y CNU2008201858630U CN200820185863U CN201262250Y CN 201262250 Y CN201262250 Y CN 201262250Y CN U2008201858630 U CNU2008201858630 U CN U2008201858630U CN 200820185863 U CN200820185863 U CN 200820185863U CN 201262250 Y CN201262250 Y CN 201262250Y
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- CN
- China
- Prior art keywords
- valve
- ball
- rod
- seat
- 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
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Abstract
The utility model provides a metal hard sealing ball valve, which comprises a valve body, a left valve cap, a right valve cap, a fixing block, a valve seat, a valve rod, a positioning sleeve, a connecting disc and a drive device, wherein, the left valve cap and the right valve cap which are provided with flow passages are installed on two sides of the valve body; the valve ball with a passage is placed in the valve body; the upper end of the valve ball and the valve rod are connected with the drive device; the positioning sleeve and the connecting disc are sleeved on the valve rod; a radial composite bearing is arranged between the valve rod and the positioning sleeve, and the connecting disc; high-strength hard metal tungsten carbide layers are arranged on the surface of a valve ball and the sealing surface of the valve seat; and the valve body is welded with the valve seat. The utility model reduces the mechanical wear of the valve rod and the operational torque, improves the abrasive resistance and sealing effect of the sealing surface of the valve ball and the valve seat, prolongs the service life of the valve, reduces leak source outside the valve and is suitable for severe working environment.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of metal hard-sealing ball valve.
Background technique
At present, metal hard-sealing ball valve has been widely used in industries such as electric power, waterpower, chemical industry, oil refining, metallurgy.Existing metal hard-sealing ball valve is made up of valve body, left and right valve gap, valve ball, valve seat, valve rod and drive unit usually, the left and right valve gap that has runner is equipped with in the both sides of valve body by bolt, nut, the valve ball that has through hole places in the valve body, left and right valve seat is loaded in the left and right valve gap respectively, the both sides of valve ball, is provided with cobalt-based alloy layer or cementation zone in ball surface and sealing surface of seat by built-up welding; The upper end of valve ball links to each other with valve rod and drive unit.During work, by the drive unit rotation valve rod, the valve ball that drives its lower end rotates, and makes through hole on the valve ball corresponding with the runner on the valve gap or stagger, thus the closure or openness of realization ball valve.Because valve ball is big with the valve base surface wearing and tearing in rotation process, the upper and lower force part of valve rod is subject to mechanical wear, and forms the leak source that leaks easily between valve body and the left and right valve gap, has reduced the functional reliability of ball valve, has shortened the working life of ball valve.
The model utility content
For overcoming the deficiencies in the prior art part, the utility model provides a kind of rational in infrastructure, easy to use, wearing and tearing are little, the life-span is long hard seal ball valve.
The technological scheme that its technical problem that solves the utility model adopts is: it comprises valve body, left and right valve gap, valve ball, fixed block, valve seat, valve rod, setting sleeve, land and drive unit; The both sides of valve body are equipped with the left and right valve gap that has runner respectively, and the valve ball that has passage places in the valve body, and the upper end of valve ball links to each other with valve rod and drive unit; Be equipped with setting sleeve and land on the valve rod, position and fix; Between valve rod and setting sleeve, land, be provided with radially composite bearing,, reduce operational torque, improve the working life of valve to reduce the mechanical wear of the upper and lower force part of valve rod.
On above-mentioned ball surface and sealing surface of seat, be provided with high strength hard metallic carbide tungsten layer, to improve the wear-resisting property of valve ball and valve seat by supersonic spray coating.
Above-mentioned valve body and valve seat to reduce the leak source that leaks of valve, improve the sealing reliability of valve by being weldingly connected.
The utility model is owing to be provided with radially composite bearing of twice in the upper and lower force part of valve rod, making it mechanical wear diminishes, operational torque reduces, and be provided with high strength hard metallic carbide tungsten layer in ball surface and sealing surface of seat, the friction torque of valve ball and sealing surface of seat is diminished, easily reach sealing effect, improve the working life of valve greatly, valve body and left and right valve gap reduce valve leakage out of steam system point by being weldingly connected simultaneously, are applicable to harsh working environment.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the zoomed-in view of the local I among Fig. 1.
Among the figure: 1 is valve body, 2 is right valve gap, 2a is left valve gap, 3 is valve ball, 4 is passage, 5 is fixed block, 6 is valve rod, 7 is bearing, 8 is thrust pad, 9 is valve seat, 10 is sealing gasket, 11 is preloading spring, 12 is locating stud, 13 is setting sleeve, 14 is stop pin, 15 weld seams, 16 is thrust pad, 17 is lower radial bearing, 17a is last radial bearing, 18 and 19 is seal ring, 20 is land, 21 is screw, 22 is screw, 23 is flat key, 24 is gasket, 25,26 and 27 is waterproof ring, 28 is drive unit, 29 is attachment screw, 30 for draining plug screw, 31 is drain plug, 32 is suspension ring, 33 is bearing support
Embodiment
Below in conjunction with drawings and Examples, the utility model is further specified:
Comprise valve body 1, left and right valve gap 2a, 2, valve ball 3, fixed block 5, valve rod 6, valve seat 9, setting sleeve 13, land 20 and drive unit 28; The both sides of valve body 1 link to each other with the left and right valve gap 2a, 2 that has runner by full-automatic submerged arc welding, and welding forms weld seam 15; The valve ball 3 that has passage 4 is positioned in valve body 1 chamber by fixed block 5, and the both sides of fixed block 5 fix with left and right valve gap 2a, 2 by locating stud 12; In the both sides of valve ball 3 valve seat 9 is housed, has sealing gasket 10 to realize sealing between valve seat 9 and the left and right valve 2a, 2.On valve ball 3 surfaces and valve seat 9 sealing surfaces, be provided with high strength hard metallic carbide tungsten layer, to improve the wear-resisting property of valve ball 3 and valve seat 9 by supersonic spray coating.Left and right valve gap 2a, 2 and valve seat 9 between be mounted with preloading spring 11, push valve seat 9 to valve ball 3 all the time and be close to it; Middle perforate tapping on valve body 1 top is mounted with valve rod 6, and valve rod 6 lower ends are connected with valve ball 3 top rectangle square holes, be equipped with setting sleeve 13 and position on valve rod 6, and setting sleeve 13 is connected by socket head screw 21 with valve body 1; Setting sleeve 13 lower end surface and valve rod 6 end face surface of contact have thrust pad 16 to separate, and between setting sleeve 13 and the valve body 1 seal ring 19 are arranged, and sealing gasket 24 is realized sealing, and have seal ring 18 to realize sealing between the valve rod 6.Be provided with land 20 above setting sleeve 13, land 20 runs through setting sleeve 13 by land screw 22 and connects valve body 1 middle part, and runs through land 20, setting sleeve 13 and valve body 1 middle part by stop pin 14, prevents to reverse.Valve rod 6 tops are connected with worm-gear type drive unit 28 endoporus with flat key 23, worm-gear type drive unit 28 is placed on the land 20 by attachment screw 29, drain plug screw 30, drain plug 31, be written on the valve body 1 with the NPT screw thread, waterproof ring 25,26,27 is installed on setting sleeve 13, the land 20.Between valve rod 6 tops and land 20, be provided with upper valve rod radial bearing 17a, between valve rod 6 bottoms and setting sleeve 13, be provided with lower valve rod radial bearing 17,, reduce operational torque, improve the working life of valve to reduce the mechanical wear of valve rod 6.Work lifting for convenience and transportation, suspension ring 32 are welded on the left and right valve gap 2a, 2, and bearing support 33 is welded in the left and right valve gap 2a of valve, 2 bottom.
When the needs Open valve, the handwheel of the worm-gear driven that turns clockwise device 28, make with its valve rod of fixing with flat key 23 6 and drive valve balls 3 half-twists, show open position by indicator on the worm-gear driven device 28 and limit switch, passage 4 on the valve ball 3 is opened relative with runner on the left and right valve seat 2a, 2, valve opening.When needs are closed, then be rotated counterclockwise the handwheel of worm-gear driven device 28, make 90 ° of valve ball 3 revolutions, by indicator on the worm-gear driven device 28 and limit switch, show closed position, the passage 4 on the valve ball 3 staggers valve closing with the runner on the left and right valve seat 2a, 2.
Claims (3)
1, a kind of metal hard-sealing ball valve comprises valve body, left and right valve gap, valve ball, fixed block, valve seat, valve rod, setting sleeve, land and drive unit; The both sides of valve body are equipped with the left and right valve gap that has runner respectively, and the valve ball that has passage places in the valve body, and the upper end of valve ball links to each other with valve rod and drive unit; Be equipped with setting sleeve and land on the valve rod; It is characterized in that: between valve rod and setting sleeve, land, be equipped with radially composite bearing.
2, a kind of metal hard-sealing ball valve according to claim 1 is characterized in that: be provided with high strength hard metallic carbide tungsten layer on above-mentioned ball surface and sealing surface of seat.
3, a kind of metal hard-sealing ball valve according to claim 1, it is characterized in that: above-mentioned valve body and valve seat are by being weldingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201858630U CN201262250Y (en) | 2008-09-12 | 2008-09-12 | Metal hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201858630U CN201262250Y (en) | 2008-09-12 | 2008-09-12 | Metal hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262250Y true CN201262250Y (en) | 2009-06-24 |
Family
ID=40808723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201858630U Expired - Fee Related CN201262250Y (en) | 2008-09-12 | 2008-09-12 | Metal hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262250Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581375A (en) * | 2009-06-26 | 2009-11-18 | 昆山维萨阀门有限公司 | Metal hard seal ball valve |
| CN103075534A (en) * | 2012-05-21 | 2013-05-01 | 陈乃昶 | Method for machining long-distance transport pipe all-welded ball valve |
| WO2021143494A1 (en) * | 2020-01-16 | 2021-07-22 | 苏州纽威阀门股份有限公司 | Fixed ball valve |
-
2008
- 2008-09-12 CN CNU2008201858630U patent/CN201262250Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581375A (en) * | 2009-06-26 | 2009-11-18 | 昆山维萨阀门有限公司 | Metal hard seal ball valve |
| CN103075534A (en) * | 2012-05-21 | 2013-05-01 | 陈乃昶 | Method for machining long-distance transport pipe all-welded ball valve |
| WO2021143494A1 (en) * | 2020-01-16 | 2021-07-22 | 苏州纽威阀门股份有限公司 | Fixed ball 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 |
Granted publication date: 20090624 Termination date: 20170912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |