CN201866318U - Diaphragm valve for nuclear power water system - Google Patents
Diaphragm valve for nuclear power water system Download PDFInfo
- Publication number
- CN201866318U CN201866318U CN2010205865310U CN201020586531U CN201866318U CN 201866318 U CN201866318 U CN 201866318U CN 2010205865310 U CN2010205865310 U CN 2010205865310U CN 201020586531 U CN201020586531 U CN 201020586531U CN 201866318 U CN201866318 U CN 201866318U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- nuclear power
- water system
- power water
- 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 - Lifetime
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Abstract
The utility model relates to a diaphragm valve for a nuclear power water system. The diaphragm valve is characterized in that the upper part of a valve cap is connected with a valve rod nut; a trapezoid internal thread is formed on the valve rod nut; and a trapezoid external thread corresponding to the trapezoid external thread is arranged on the outer surface of the valve rod. When the diaphragm valve is used and a hand wheel is subjected to circular motion, the valve rod does rectilinear motion changed from the circular motion by the valve rod nut. Meanwhile, the valve rod with a hole at the tail is inserted in a valve clack round hole, aligned with a drilling hole and fixed by a spring pin roll; the moving space of the valve rod can be effectively reduced; and the failure of the connection of the valve rod and a valve clack, the matching seizure or the wear of threads due to fine threads, and the unclear opening and closing of the valve body can be overcome to a certain degree.
Description
Technical field:
The utility model relates to the technical field of mechanical valve, and specifically a kind of membrane valve that is used for the nuclear power water system relates in particular to the membrane valve that is used for rubber and Structural Hardware sealing.
Background technique:
In the present existing membrane valve structure, connect flap by valve rod, flap and valve rod are connected to T type groove.Valve rod neck section is less than valve rod light face section, and valve rod neck section enters T type groove, and valve rod light face is due to T type groove.Valve rod light face is fixed in T type groove, and valve rod can the move left and right spy easily skid off groove in the motion, and cause the flap unlatching and close the malfunctioning of lifting, thus set up guide rail around the valve gap, in case move, but very difficult in making.
Valve rod and valve gap open and close in the existing membrane valve structure, adopt the body screw thread.In frequent keying, cause the wearing and tearing of screw thread especially, cause " deadlock " of complete machine.The membrane valve of prior art, the valve rod lifting is not obvious, causes operator to operate inconvenience.
Summary of the invention:
The purpose of this utility model is to provide a kind of improved membrane valve that is used for the nuclear power water system, and it can overcome, and valve rod skids off flap in the prior art, and the unconspicuous deficiency of mark method is opened and closed in the wearing and tearing of valve rod lifting screw thread department.
To achieve these goals, the technical solution of the utility model is: a kind of membrane valve that is used for the nuclear power water system, it mainly comprises valve body, valve gap, valve rod, with the flap that links to each other with valve rod, it is characterized in that: valve gap top is connected with a Stem Mut, Stem Mut is provided with trapezoidal internal thread, and stem exterior surface is provided with and the corresponding trapezoidal outside thread of trapezoidal internal thread.
During use, when the utility model carries out circular movement when handwheel, make stem movement become straight line motion by circumference by Stem Mut.Afterbody valve rod with holes inserts in the flap circular hole simultaneously, aiming at boring axis pin of the spring is fixed, can reduce the mobile space of valve rod effectively, coming off between having overcome valve rod to a certain extent and flap being connected, also overcome to a certain extent because screw thread carefully causes kills between cooperation or the wearing and tearing of screw thread, also overcome valve body in to a certain degree and open and close not clear.
Description of drawings:
Fig. 1 is the utility model one embodiment's a structural representation
Embodiment:
The utility model will be further described below in conjunction with drawings and Examples.
The utility model mainly comprises a kind of membrane valve that is used for the nuclear power water system, it mainly comprises valve body 1, valve gap 4, valve rod 10, with the flap 7 that links to each other with valve rod, its difference with the prior art is: valve gap top is connected with a Stem Mut 12, Stem Mut is provided with trapezoidal internal thread, and stem exterior surface is provided with and the corresponding trapezoidal outside thread of trapezoidal internal thread.Flap top is provided with groove, and the groove both sides are provided with the circular hole of one group of correspondence, and the bottom of valve rod is provided with attachment hole, and the bottom of valve rod is arranged in the groove of flap, and valve rod is fixedlyed connected by the axis pin of the spring 8 that passes circular hole with flap.The top of valve rod is provided with lengthening processing silk tooth, and the top of valve rod is arranged with a gland nut 15.Stem Mut is externally connected with a handwheel 13 and a round nut 14, and round nut is arranged on the top of handwheel.Stem Mut adopts the soft material Cuprum alloy.Valve body is provided with a retaining ring 17, and retaining ring can link to each other with handwheel by hinge, the rotation of control handwheel.
In force, be provided with diaphragm of rubber 2 between valve body and the valve gap, when the valve rod unlatching was closed, machining screw and threaded stem were done to open and are closed motion on the valve gap body.The prior art fine thread, in order to overcome prior art silk thread mouth situation easy to wear, the utility model increases a copper Stem Mut on valve gap top, and Stem Mut and threaded stem partly adopt the form of trapezoidal thread, have increased the width of screw thread.Stem Mut employing simultaneously is copper, can reduce the frictional force of screw thread, has increased the working life of product, and Stem Mut and handwheel are connected to round nut simultaneously, when handwheel carries out circular movement, make stem movement become straight line motion by circumference by Stem Mut.
When afterbody valve rod with holes inserts in the flap circular hole, aiming at boring axis pin of the spring is fixed, can reduce the mobile space of valve rod effectively, make that the environment between being connected of valve rod and flap is improved, thereby make the relative traditional flap of flap significantly reduce dropping situations with stem structure.Equipment operation is safer.Structure is also fairly simple simultaneously, easy-to-operat and use.Select for use axis pin of the spring as being connected and fixed part, not only make things convenient for installation but also do not lose attractive in appearance.
When barrier film was closed, valve rod top gland nut and Stem Mut closed in one, and at this time visual this membrane valve is closed; back pressure cap nut and Stem Mut; when drawing back a segment distance, this moment, visual this membrane valve was opened, and gland nut can be used as a kind of protection of valve rod external connection screw again.
Claims (6)
1. membrane valve that is used for the nuclear power water system, it mainly comprises valve body, valve gap, valve rod, with the flap that links to each other with valve rod, it is characterized in that: valve gap top is connected with a Stem Mut, Stem Mut is provided with trapezoidal internal thread, and stem exterior surface is provided with and the corresponding trapezoidal outside thread of trapezoidal internal thread.
2. a kind of membrane valve that is used for the nuclear power water system according to claim 1, it is characterized in that: flap top is provided with groove, the groove both sides are provided with the circular hole of one group of correspondence, the bottom of valve rod is provided with attachment hole, the bottom of valve rod is arranged in the groove of flap, and valve rod is fixedlyed connected by an axis pin of the spring that passes circular hole with flap.
3. a kind of membrane valve that is used for the nuclear power water system according to claim 1 is characterized in that: the top of valve rod is provided with lengthening processing silk tooth, and the top of valve rod is arranged with a gland nut.
4. a kind of membrane valve that is used for the nuclear power water system according to claim 1 is characterized in that: Stem Mut is externally connected with a handwheel and a round nut, and round nut is arranged on the top of handwheel.
5. a kind of membrane valve that is used for the nuclear power water system according to claim 1 is characterized in that: Stem Mut adopts the soft material Cuprum alloy.
6. a kind of membrane valve that is used for the nuclear power water system according to claim 1, it is characterized in that: valve body is provided with a retaining ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205865310U CN201866318U (en) | 2010-10-29 | 2010-10-29 | Diaphragm valve for nuclear power water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205865310U CN201866318U (en) | 2010-10-29 | 2010-10-29 | Diaphragm valve for nuclear power water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866318U true CN201866318U (en) | 2011-06-15 |
Family
ID=44137474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205865310U Expired - Lifetime CN201866318U (en) | 2010-10-29 | 2010-10-29 | Diaphragm valve for nuclear power water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201866318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422906A (en) * | 2014-09-11 | 2016-03-23 | 费斯托股份有限两合公司 | Diaphragm valve |
| CN105422907A (en) * | 2014-09-11 | 2016-03-23 | 费斯托股份有限两合公司 | Diaphragm valve |
-
2010
- 2010-10-29 CN CN2010205865310U patent/CN201866318U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422906A (en) * | 2014-09-11 | 2016-03-23 | 费斯托股份有限两合公司 | Diaphragm valve |
| CN105422907A (en) * | 2014-09-11 | 2016-03-23 | 费斯托股份有限两合公司 | Diaphragm valve |
| CN105422907B (en) * | 2014-09-11 | 2019-07-12 | 费斯托股份有限两合公司 | Diaphragm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 201799 No. 199 Qing Road, Shanghai Industrial Zone, Qingpu Patentee after: Shanghai aiweike valve Limited by Share Ltd Address before: 201706 Shanghai city Qingpu district Song Ying Road No. 1205 Patentee before: Shanghai Aiweike Valve Manufacturing Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
|
| CX01 | Expiry of patent term |