CN204025745U - Modified model three-flat ball valve - Google Patents
Modified model three-flat ball valve Download PDFInfo
- Publication number
- CN204025745U CN204025745U CN201420449939.1U CN201420449939U CN204025745U CN 204025745 U CN204025745 U CN 204025745U CN 201420449939 U CN201420449939 U CN 201420449939U CN 204025745 U CN204025745 U CN 204025745U
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- valve
- valve body
- packing
- location piece
- modified model
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Abstract
The utility model discloses a kind of modified model three-flat ball valve, comprise valve body, described valve inner is provided with runner, in described runner, be provided with spherical valve core, described valve body is provided with the valve rod being connected with ball core valve core, the far-end of described valve rod is connected with handle, on described valve rod, be from bottom to top socketed with successively spiral wound gasket, location piece and Stem Mut, described handle is arranged between location piece and Stem Mut, the bottom surface of described spiral wound gasket contacts with valve body, described location piece is provided with positioning groove, the position that described valve body is corresponding with positioning groove is provided with positioning bolt.The utility model aims to provide the modified model three-flat ball valve of a kind of good sealing effect, seal life length, accurate positioning.
Description
Technical field
The utility model relates to valve design and manufacture field, particularly a kind of modified model three-flat ball valve.
Background technique
Three-flat ball valve and gate valve are the valves that belongs to a type together, and difference is a spheroid at its closure member, and spheroid makes around valve body center line a kind of valve that rotation reaches unlatching, closes.Three-flat ball valve is mainly used to make the flow direction that cuts off, distributes and change medium in pipeline.
Three-flat ball valve has the following advantages:
1. fluid resistance is little, and its resistance coefficient equates with the pipeline section of same length.
Simple in structure, volume is little, lightweight.
3. closely reliable, the seal face materials of ball valve is widely used plastics, good airproof performance, in vacuum system, is also widely used.
4. easy to operate, open and close rapidly, from standard-sized sheet to complete shut-down, need only half-twist, be convenient to remote control.
5. easy to maintenance, ball-valve structure is simple, and seal ring is all generally movable, and dismounting and change is all more convenient.
6. when standard-sized sheet or full cut-off, the sealing surface of spheroid and valve seat and medium isolation, when medium passes through, can not cause the erosion of valve sealing face.
7. applied widely, latus rectum from little to several millimeter, arrives greatly several meters, from high vacuum to high pressure, all can apply.Flange Ball Valves, Flange Gate Valves, knife-shape gate valve
Existing three-flat ball valve is to be most widely used in chip ball valve, finds in actual use, and the rubber sheet gasketing poor durability on valve rod, ball valve location is inaccurate, and the poor problem of sealing effect often occurs.
Model utility content
The purpose of this utility model is to provide the modified model three-flat ball valve of a kind of good sealing effect, seal life length, accurate positioning.
The technological scheme that the utility model provides is: a kind of modified model three-flat ball valve, comprise valve body, described valve inner is provided with runner, in described runner, be provided with spherical valve core, described valve body is provided with the valve rod being connected with ball core valve core, the far-end of described valve rod is connected with handle, on described valve rod, be from bottom to top socketed with successively spiral wound gasket, location piece and Stem Mut, described handle is arranged between location piece and Stem Mut, the bottom surface of described spiral wound gasket contacts with valve body, described location piece is provided with positioning groove, the position that described valve body is corresponding with positioning groove is provided with positioning bolt, between described positioning bolt and valve body, be connected removably, the top of described positioning bolt is provided with a groove, the radian of described positioning groove is 90 °, in described valve body, be provided with for holding the through hole of valve rod, in described through hole, be provided with stuffing box, in described stuffing box, be from bottom to top provided with successively the first packing, the first graphite packing layer, metallic filler layer, the second graphite packing layer, the second packing, the top of the second described packing is provided with hold-down grid, described spiral wound gasket is arranged on the top of described hold-down grid.
In above-mentioned modified model three-flat ball valve, the Thickness Ratio of the first described packing, the first graphite packing layer, metallic filler layer, the second graphite packing layer, the second packing is 1:1～1.5:2～2.5:1～1.5:1.
In above-mentioned modified model three-flat ball valve, the material of described metallic filler layer is stainless steel or Cuprum alloy.
In above-mentioned modified model three-flat ball valve, between described spiral wound gasket and location piece, be provided with tightening nut.
The utility model substitutes traditional rubber sheet gasket with spiral wound gasket, the working life of having improved pad, simultaneously fastening good with sealing effect.The precision that has improved location by setting up location piece, positioning bolt removes and installs conveniently, can change easily positioning bolt, prevents the long-term rear positioning bolt distortion of using.
Further, the utility model adopts multiple different filler combination to improve sealing effect and the working life in high-temperature high-pressure medium, the first packing plays dispersive pressure as typical soft packing, by pressure smooth transfer to the effect on the first graphite packing layer, prevent unbalance stress on the first graphite packing layer and fragmentation, metallic filler layer plays a part transition between the first graphite packing layer and the second graphite packing layer, its major function be by pressure smooth transfer to the second graphite packing layer, if generally filler is broken, the maximum probability of the first graphite packing layer fragmentation so, after the first graphite packing layer fragmentation, metallic filler layer still can push the first graphite packing layer, guarantee that at short notice the first graphite packing layer can not become powdery and overflow, and then guarantee that the second graphite packing layer is not subject to the impact of other fillers.And the anti abrasive ability of metallic filler layer is much better than graphite packing, after graphite packing wearing and tearing, metallic filler layer becomes sealed body as main filler, like this in the process of operation, graphite packing generally can slightly be worn and torn prior to metallic filler layer, and continue provide graphite lubricant to metallic filler layer, improve the sealability of whole stuffing box.
When the aspect ratio of the first packing of the present utility model, the first graphite packing layer, metallic filler layer, the second graphite packing layer, the second packing is 1:1～1.5:2～2.5:1～1.5:1, its particular significant effect, stuffing box than traditional soft packing, extend 3 times its working life, the damaged efflorescence probability of graphite reduces by 90%, and sealing effect is good
Accompanying drawing explanation
Fig. 1 is the sectional view of specific embodiment of the utility model 1;
Fig. 2 is the plan view of specific embodiment of the utility model 1;
Fig. 3 is the partial enlarged drawing of A in specific embodiment of the utility model 1.
Embodiment
Below in conjunction with embodiment, the technical solution of the utility model is described in further detail, but does not form any restriction of the present utility model.
As depicted in figs. 1 and 2, a kind of modified model three-flat ball valve, comprise valve body 1, valve body 1 comprises valve body body and is connected to the valve gap on valve body body top, described valve body 1 inside is provided with runner 2, in described runner 2, be provided with spherical valve core 3, described valve body 1 is provided with the valve rod 4 being connected with ball core valve core 3, the far-end of described valve rod 4 is connected with handle 5, on described valve rod 4, be from bottom to top socketed with successively spiral wound gasket 41, location piece 42 and Stem Mut 43, described handle 5 is arranged between location piece 42 and Stem Mut 43, the bottom surface of described spiral wound gasket 41 contacts with valve body 1, described location piece 42 is provided with positioning groove 421, the position that described valve body 1 is corresponding with positioning groove 421 is provided with positioning bolt 11, between described positioning bolt 11 and valve body 1, be connected removably, the top of described positioning bolt 11 is provided with a groove 111, the radian of described positioning groove 421 is 90 °, in described valve body 1, be provided with for holding the through hole of valve rod 4, in described through hole, be provided with stuffing box 6, as the enlarged view of the local A in Fig. 3 can be seen, in described stuffing box 6, be from bottom to top provided with successively the first packing 61, the first graphite packing layer 62, metallic filler layer 63, the second graphite packing layer 64, the second packing 65, the top of the second described packing 65 is provided with hold-down grid 66, described spiral wound gasket 41 is arranged on the top of described hold-down grid 66.
In the present embodiment, the Thickness Ratio of the first described packing 61, the first graphite packing layer 62, metallic filler layer 63, the second graphite packing layer 64, the second packing 65 is 1:1～1.5:2～2.5:1～1.5:1, as the further preferred version of the present embodiment, the Thickness Ratio of the first described packing 61, the first graphite packing layer 62, metallic filler layer 63, the second graphite packing layer 64, the second packing 65 is 1:1.2:2.3:1.2:1.Each filler is symmetrical, stressed even, the graphite packing crashing rate of fragility can significantly reduce, the material of described metallic filler layer 63 is stainless steel or Cuprum alloy, between described spiral wound gasket 41 and location piece 42, be provided with tightening nut 44, guarantee the position stationarity between location piece 42, handle 5, improve positioning precision.
In actual using process, first positioning bolt 11 is installed on valve body 1, spherical valve core 3 is installed in runner 2, in stuffing box 6, place successively the first packing 61, the first graphite packing layer 62, metallic filler layer 63, the second graphite packing layer 64, the second packing 65, and compress with hold-down grid 66, spiral wound gasket 41 is installed on it, tightening nut 44, location piece 42, handle 5 and Stem Mut 43, by tightening nut 44 and Stem Mut 43 lockings, in stuffing box, filler is squeezed in good sealing state, location piece 42, handle 5 precisely coordinates location, sealability and the life-span of three-flat ball valve have been improved, improve accurate positioning performance.
Above-described is only preferred embodiment of the present utility model, all any modifications of doing within the scope of spirit of the present utility model and principle, is equal to and replaces and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a modified model three-flat ball valve, comprise valve body, described valve inner is provided with runner, in described runner, be provided with spherical valve core, described valve body is provided with the valve rod being connected with ball core valve core, the far-end of described valve rod is connected with handle, it is characterized in that, on described valve rod, be from bottom to top socketed with successively spiral wound gasket, location piece and Stem Mut, described handle is arranged between location piece and Stem Mut, the bottom surface of described spiral wound gasket contacts with valve body, described location piece is provided with positioning groove, the position that described valve body is corresponding with positioning groove is provided with positioning bolt, between described positioning bolt and valve body, be connected removably, the top of described positioning bolt is provided with a groove, the radian of described positioning groove is 90 °, in described valve body, be provided with for holding the through hole of valve rod, in described through hole, be provided with stuffing box, in described stuffing box, be from bottom to top provided with successively the first packing, the first graphite packing layer, metallic filler layer, the second graphite packing layer, the second packing, the top of the second described packing is provided with hold-down grid, described spiral wound gasket is arranged on the top of described hold-down grid.
2. modified model three-flat ball valve according to claim 1, is characterized in that, the Thickness Ratio of the first described packing, the first graphite packing layer, metallic filler layer, the second graphite packing layer, the second packing is 1:1～1.5:2～2.5:1～1.5:1.
3. modified model three-flat ball valve according to claim 1, is characterized in that, the material of described metallic filler layer is stainless steel or Cuprum alloy.
4. modified model three-flat ball valve according to claim 1, is characterized in that, between described spiral wound gasket and location piece, is provided with tightening nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420449939.1U CN204025745U (en) | 2014-08-11 | 2014-08-11 | Modified model three-flat ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420449939.1U CN204025745U (en) | 2014-08-11 | 2014-08-11 | Modified model three-flat ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025745U true CN204025745U (en) | 2014-12-17 |
Family
ID=52065612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420449939.1U Expired - Fee Related CN204025745U (en) | 2014-08-11 | 2014-08-11 | Modified model three-flat ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204025745U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221831A (en) * | 2015-11-06 | 2016-01-06 | 余成鹏 | High airtight stopcock |
| CN106641316A (en) * | 2016-12-06 | 2017-05-10 | 无锡优耐特净化装备有限公司 | Three-sheet type manual ball valve |
| CN109488785A (en) * | 2019-01-14 | 2019-03-19 | 上海万丰船舶设备有限公司 | The small-aperture ball valve of direct press type valve stem packing sealing |
| CN111306316A (en) * | 2020-03-04 | 2020-06-19 | 克里特集团有限公司 | Ball body with special-shaped flow channel and ball valve |
-
2014
- 2014-08-11 CN CN201420449939.1U patent/CN204025745U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221831A (en) * | 2015-11-06 | 2016-01-06 | 余成鹏 | High airtight stopcock |
| CN106641316A (en) * | 2016-12-06 | 2017-05-10 | 无锡优耐特净化装备有限公司 | Three-sheet type manual ball valve |
| CN109488785A (en) * | 2019-01-14 | 2019-03-19 | 上海万丰船舶设备有限公司 | The small-aperture ball valve of direct press type valve stem packing sealing |
| CN111306316A (en) * | 2020-03-04 | 2020-06-19 | 克里特集团有限公司 | Ball body with special-shaped flow channel and 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20170811 |