CN205001554U - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN205001554U CN205001554U CN201520773383.6U CN201520773383U CN205001554U CN 205001554 U CN205001554 U CN 205001554U CN 201520773383 U CN201520773383 U CN 201520773383U CN 205001554 U CN205001554 U CN 205001554U
- Authority
- CN
- China
- Prior art keywords
- mentioned
- valve
- valve body
- spool
- valve seat
- 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
Links
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 238000003763 carbonization Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910003470 tongbaite Inorganic materials 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
- Sliding Valves (AREA)
Abstract
The utility model discloses a ball valve, including the valve body, arrange the case in the valve body in, placed upper reaches disk seat and low reaches disk seat in the above -mentioned valve body, be equipped with belleville spring between above -mentioned upper reaches disk seat and the valve body, above -mentioned low reaches disk seat and the contact of above -mentioned case, above -mentioned low reaches disk seat is equipped with surfacing hard alloy layer and chromium carbide layer with above -mentioned case respectively at contact surface between them. The beneficial effects of the utility model are that: the case can not appear biting with the disk seat, ball seat material cost is lower, and sealing performance is reliable.
Description
Technical field
This practicality relates to a kind of ball valve.
Background technique
Ball valve is that open-shut device (spheroid) is driven by valve rod, and around the valve that ball valve axis rotates.Ball valve is come out the 1950's, and along with the develop rapidly of science and technology, updating of production technology and product structure, in the 50 short years, has developed rapidly and become a kind of main valve class.In the country of western industrial prosperity, the use of ball valve is constantly risen year by year.
Ball valve is widely used in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, iron and steel, occupies very important status in national economy.It has the action of 90-degree rotation, and faucet body is spheroid, has manhole or passage by its axis.
In some special operation condition medium occasion, such as, medium containing a large amount of solid grit, traditional valve class, as gate valve, stop valve cannot be suitable for.For there is high temperature, high pressure, occasion containing solid particle medium simultaneously, metal hard seal abrasion-resisting ball valve is a kind of valve be commonly recognized at present.
And metal seal ball valve main technological difficulties are exactly the selection of the hardened material of spool and valve base surface.Existing spool and valve seat all adopt and spray chromium carbide process, and spool and valve seat do not have difference of hardness; Especially for the ball valve that downstream valve seat supports without disc spring, if still adopt same spool and seat material, there is no difference of hardness, there will be between spool and valve seat and bite, thus cause seal leakage.
Model utility content
The purpose of this utility model is to provide a kind of ball valve, and the spool of this ball valve and valve seat there will not be and bite.
For achieving the above object, the utility model provides following technological scheme:
Ball valve, comprise valve body, be placed in the spool in valve body, upstream valve seat and downstream valve seat is placed with in above-mentioned valve body, belleville spring is provided with between above-mentioned upstream valve seat and valve body, above-mentioned downstream valve seat contacts with above-mentioned spool, and above-mentioned downstream valve seat and above-mentioned spool are respectively equipped with pile-up welding hard alloy layer and carbonization layers of chrome at both surface of contact.
Preferably, above-mentioned pile-up welding hard alloy layer is built-up welding chromium-base alloy layer.
Preferably, the hemisphere that above-mentioned spool is corresponding with downstream valve seat is provided with through hole, the center-aisle UNICOM of this through hole and above-mentioned spool.When ball valve is in closed condition, if a period of time do not use ball valve, the residual medium likely dry and hard blocking ball valve center-aisle of spool center-aisle, especially granular medium.The setting of this structure, when ball valve is closed, the residual medium of spool center-aisle can flow out from through hole in time, there will not be the situation of blocking spool center-aisle.
Preferably, above-mentioned spool is provided with valve rod, above-mentioned valve rod outer wall is provided with flange, and this flange is positioned at valve body, and above-mentioned valve stem casing is provided with thrust pad, this thrust pad is between above-mentioned flange top end and above-mentioned valve body, above-mentioned body top and above-mentioned valve rod are formed with seal space, and sealing space is equipped with filler, and above-mentioned valve body top is connected with gland, above-mentioned gland compresses above-mentioned filler, and above-mentioned gland is sheathed on above-mentioned valve rod.Owing to leaving gap between handle and gland, therefore tightening of nut can not make valve rod increase the axial force of thrust pad, increases this place's moment of torsion; Simultaneously because valve rod does not contact with gland, only filler and valve rod, and thrust pad and valve stem contacts, greatly reduce open and close torque.
When fluid flows into, because upstream valve seat does not now seal, fluid directly enters lumen.By the load of butterfly spring, its spool and downstream valve seat are produced in a low voltage state to seal.After fluid reaches certain pressure, it is made to seal by fluid force.Because downstream valve seat seal face materials is built-up welding chromium sill, form difference of hardness with spheroid chromium carbide, thus prevent ball seat from biting, reach sealing.
This structure floating ball valve relies on metal sealing completely, and each sealing surface all needs abundant grinding before assembly, and controls grinding rear valve base well and embrace the size of ball.
The beneficial effects of the utility model are: spool and valve seat there will not be and bite; Ball seat cost of material is lower, and sealability is reliable.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the enlarged view of a-quadrant in Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
The technological scheme that the utility model is specifically implemented is:
Ball valve, comprise valve body 1, be placed in the spool 3 in valve body 1, it is characterized in that, upstream valve seat 4 and downstream valve seat 2 is placed with in above-mentioned valve body 1, be provided with belleville spring 7 between above-mentioned upstream valve seat 4 and valve body 1, above-mentioned downstream valve seat 2 contacts with above-mentioned spool 3, and above-mentioned downstream valve seat 2 and above-mentioned spool 3 are respectively equipped with pile-up welding hard alloy layer and carbonization layers of chrome at both surface of contact.
Above-mentioned pile-up welding hard alloy layer is built-up welding chromium-base alloy layer.
The hemisphere that above-mentioned spool 3 is corresponding with downstream valve seat 2 is provided with through hole, the center-aisle UNICOM of this through hole and above-mentioned spool 3.
Above-mentioned spool 3 is provided with valve rod, above-mentioned valve rod outer wall is provided with flange, this flange is positioned at valve body 1, above-mentioned valve stem casing is provided with thrust pad 5, and this thrust pad 5 is between above-mentioned flange top end and above-mentioned valve body 1, and above-mentioned valve body 1 top and above-mentioned valve rod are formed with seal space, sealing space is equipped with filler 6, above-mentioned valve body 1 top is connected with gland, and above-mentioned gland compresses above-mentioned filler 6, and above-mentioned gland is sheathed on above-mentioned valve rod.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a ball valve, comprise valve body, be placed in the spool in valve body, it is characterized in that, upstream valve seat and downstream valve seat is placed with in above-mentioned valve body, be provided with belleville spring between above-mentioned upstream valve seat and valve body, above-mentioned downstream valve seat contacts with above-mentioned spool, and above-mentioned downstream valve seat and above-mentioned spool are respectively equipped with pile-up welding hard alloy layer and carbonization layers of chrome at both surface of contact.
2. ball valve according to claim 1, is characterized in that, above-mentioned pile-up welding hard alloy layer is built-up welding chromium-base alloy layer.
3. ball valve according to claim 2, is characterized in that, the hemisphere that above-mentioned spool is corresponding with downstream valve seat is provided with through hole, the center-aisle UNICOM of this through hole and above-mentioned spool.
4. ball valve according to claim 3, it is characterized in that, above-mentioned spool is provided with valve rod, and above-mentioned valve rod outer wall is provided with flange, this flange is positioned at valve body, above-mentioned valve stem casing is provided with thrust pad, and this thrust pad is between above-mentioned flange top end and above-mentioned valve body, and above-mentioned body top and above-mentioned valve rod are formed with seal space, sealing space is equipped with filler, above-mentioned valve body top is connected with gland, and above-mentioned gland compresses above-mentioned filler, and above-mentioned gland is sheathed on above-mentioned valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520773383.6U CN205001554U (en) | 2015-10-08 | 2015-10-08 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520773383.6U CN205001554U (en) | 2015-10-08 | 2015-10-08 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001554U true CN205001554U (en) | 2016-01-27 |
Family
ID=55158442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520773383.6U Expired - Fee Related CN205001554U (en) | 2015-10-08 | 2015-10-08 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179733A (en) * | 2015-10-08 | 2015-12-23 | 西诺威阀门控制（苏州）有限公司 | Ball valve |
-
2015
- 2015-10-08 CN CN201520773383.6U patent/CN205001554U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179733A (en) * | 2015-10-08 | 2015-12-23 | 西诺威阀门控制（苏州）有限公司 | 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: 20160127 |