CN206904268U - A kind of gate valve - Google Patents
A kind of gate valve Download PDFInfo
- Publication number
- CN206904268U CN206904268U CN201720600714.5U CN201720600714U CN206904268U CN 206904268 U CN206904268 U CN 206904268U CN 201720600714 U CN201720600714 U CN 201720600714U CN 206904268 U CN206904268 U CN 206904268U
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- CN
- China
- Prior art keywords
- valve
- aperture
- land
- valve rod
- bonnet
- 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.)
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Abstract
The utility model discloses a kind of gate valve, including valve body, fluid passage is provided with valve body, bonnet is connected with valve body, bonnet includes lower cover and upper lid；Valve rod is rotatably connected in bonnet, valve plate nut is bolted with valve rod, valve plate is connected with valve plate nut, lower cover upper surface is provided with the through hole installed for valve rod, the through hole includes aperture position in upper macropore and position under, transition bench terrace between macropore and aperture is provided with counterbore, and the sealing shroud being sleeved on valve rod is provided with the aperture；The top and bottom of the sealing shroud outside wall surface protrude outward to be located in counterbore so as to form upper land and lower land, the upper land respectively, and the lower land contacts with the lower surface of aperture.The gate valve of the structure no matter cut-off state or conducting state, its sealing effectiveness is all good, and can realize repair and maintenance with pressure, and production and living will not be impacted.
Description
Technical field
It the utility model is related to a kind of gate valve.
Background technology
Existing self-sealing gate valve, including valve body, valve body is interior to be provided with fluid passage, and bonnet, bonnet bag are connected with valve body 1
Include the lower cover being connected on valve body and be connected to the upper lid of lower cover upper end；Valve rod is rotatably connected in bonnet, is bolted with valve rod
Valve plate nut, valve plate is connected with valve plate nut, valve rod drives valve plate to leave or can realize fluid passage into fluid passage
Unimpeded or cut-off；The lower cover upper surface is provided with the through hole installed for valve rod, and the through hole includes position upper big
The aperture of hole and position under, the sealing ring for being sealed between valve rod and the hole wall of aperture is set with valve rod；Wrapped on valve plate
Elastic sealing layer is covered with, elastic sealing layer can be bonded with the two sides of valve plate chamber and the inwall of fluid passage, to realize sealing.On
The gate valve of structure is stated, during unlatching, due between valve rod and the hole wall of aperture, between lower cover and lower cover and between upper lid and valve rod
Sealing ring is equipped with, therefore fluid will not leak；But if when fluid flows through valve body, tieed up if being covered on opening
Shield, then because the seal approach between lower cover and lower cover and between upper lid and valve rod is released from, and only lean on valve rod and aperture
Hole wall between sealing ring sealed, then can occur fluid leakage, that is to say, that existing gate valve can not carry out inspection with pressure
Repair.
The content of the invention
The technical problems to be solved in the utility model provides a kind of gate valve for carrying out maintenance with pressure.
In order to solve the above-mentioned technical problem, gate valve provided by the utility model, including valve body, valve body is interior to be led to provided with fluid
Road, bonnet is connected with valve body, and bonnet includes the lower cover being connected on valve body and the upper lid for being connected to lower cover upper end；Turn in bonnet
It is dynamic to be connected with valve rod, valve plate nut is bolted with valve rod, valve plate is connected with valve plate nut, valve rod drives valve plate to leave or enter
Fluid passage can realize the unimpeded of fluid passage or cut-off；The lower cover upper surface is provided with the through hole installed for valve rod, institute
State the aperture that through hole includes position in upper macropore and position under, it is characterised in that：Mistake between the macropore and aperture
Cross step surface and be provided with counterbore, the sealing shroud being sleeved on valve rod is provided with the aperture；The upper end of the sealing shroud outside wall surface
Protrude outward with lower end and be located at so as to form upper land and lower land, the upper land respectively in counterbore, the lower land and
The lower surface contact of aperture.
The lower land small big taper land under being.
The gate valve of said structure, during unlatching, it can make it that lower land of sealing shroud is tight by valve rod drive valve plate nut
Press closer and be pressed on the lower surface of aperture, equivalent to sealing gasket has been set between valve plate nut and the lower surface of aperture, can prevent
Fluid leaks out between sealing shroud and aperture, further, since the lower land of sealing shroud occurs under the extruding of valve plate nut
Deformation, sealing shroud can be bonded with the hole wall of valve rod and aperture it is even closer, fluid also will not between sealing shroud and valve rod to
External leakage.Now, repair and maintenance is carried out if bonnet, opened, fluid leakage will not occurs, that is to say, that this practicality is new
Type can realize repair and maintenance with pressure, do not influence the conveying of fluid and production and living are impacted.
In summary, the utility model has advantages below：No matter cut-off state or conducting state, its sealing effectiveness is all
It is good, and repair and maintenance with pressure can be realized, production and living will not be impacted.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of existing elastic sealing gate valve；
Fig. 2 is the structural representation of the utility model cut-off state；
Fig. 3 is the structural representation of the unimpeded state of the utility model；
Fig. 4 is the structural representation of the lower cover shown in Fig. 2 and Fig. 3.
Embodiment
For the structure of existing elastic sealing gate valve as shown in figure 1, including valve body 1, valve body is interior to be provided with fluid passage 2, valve body 1
On be connected with bonnet, bonnet includes the lower cover 3 being connected on valve body 1 and the upper lid 4 for being connected to the upper end of lower cover 3；Rotated in bonnet
Valve rod 5 is connected with, valve plate nut 6 is bolted with valve rod 5, valve plate 7 is connected with valve plate nut 6, valve rod 5 drives valve plate 7 to leave
Or the unimpeded of fluid passage 2 or cut-off can be realized into fluid passage 2；The upper surface of lower cover 3 is provided with what is installed for valve rod 5
Through hole, the through hole include the aperture 9 position in upper macropore 8 and position under, sealing ring 15 are set with valve rod 5,
The sealing that sealing ring 15 is used between valve rod 5 and aperture 9.The gate valve of said structure, it is to have in fluid passage 2 in unimpeded state
Fluid by when, if now opening upper lid 4, the leakage of fluid can not be only prevented by the sealing function of sealing ring 15, therefore can not
Realize repair and maintenance with pressure.
The utility model is on the basis of the elastic sealing gate valve shown in Fig. 1 and the technological improvement made, its structure with
Existing elastic sealing gate valve is essentially identical, and its difference is to the structure and lower cover of lower cover and the sealing means of valve rod
Improved.Reference picture 2, Fig. 3 and Fig. 4, gate valve provided by the utility model, including valve body 1, valve body is interior to be provided with fluid passage
2, bonnet is connected with valve body 1, bonnet includes the lower cover 3 being connected on valve body 1 and the upper lid 4 for being connected to the upper end of lower cover 3；Bonnet
Valve rod 5 is inside rotatably connected to, valve plate nut 6 is bolted with valve rod 5, valve plate 7 is connected with valve plate nut 6, valve rod 5 drives valve plate
7 leave or can realize the unimpeded of fluid passage 2 or cut-off into fluid passage 2；The upper surface of lower cover 3 is provided with and supplies valve rod 5
The through hole installed, the through hole include the aperture 9 position in upper macropore 8 and position under, the macropore 8 and aperture 9
Between transition bench terrace 10 be provided with counterbore 11, the sealing shroud 12 being sleeved on valve rod 5 is provided with the aperture 9；It is described close
The top and bottom of the outside wall surface of big envelope 12 are protruded outward so as to form upper land 13 and lower land 14, the upper land 13 respectively
In counterbore 11, the lower upper side of land 14 contacts with the lower surface of aperture 9.Lower land 14 can be set to down to small big
Taper land, taper land are easier to deform so that under the internal face of sealing shroud 12 and lower land 14 and aperture 9 after being pressurized
End contact it is closer, so as to improve sealing effectiveness.
Reference picture 3, during valve opening, risen by the drive valve plate nut 6 of valve rod 5 together with valve plate 7, valve plate nut 6
Lower land 14 is tightly pressed against on the lower surface of aperture 9 after being raised to the upper limit, the lower compressive deformation of land 14 also makes the interior of sealing shroud 12
Wall is tightly attached on valve rod 5, can now be opened lid 4 and be carried out maintenance maintenance, fluid will not be leaked, with pressure can overhauled, will not be right
Production and living impact.
Claims (2)
1. a kind of gate valve, including valve body（1）, valve body is interior to be provided with fluid passage（2）, valve body（1）On be connected with bonnet, bonnet includes
It is connected to valve body（1）On lower cover（3）Be connected to lower cover（3）The upper lid of upper end（4）；Valve rod is rotatably connected in bonnet（5）,
Valve rod（5）On be bolted with valve plate nut（6）, valve plate nut（6）On be connected with valve plate（7）, valve rod（5）Drive valve plate（7）Leave
Or into fluid passage（2）Fluid passage can be achieved（2）It is unimpeded or cut-off；The lower cover（3）Upper surface is provided with and supplies valve rod
（5）The through hole installed, the through hole include position in upper macropore（8）With aperture of the position under（9）, its feature exists
In：The macropore（8）And aperture（9）Between transition bench terrace（10）It is provided with counterbore（11）, the aperture（9）It is interior to be provided with set
Mounted in valve rod（5）On sealing shroud（12）；The sealing shroud（12）The top and bottom of outside wall surface are protruded outward so as to respectively
Land in formation（13）With lower land（14）, the upper land（13）Positioned at counterbore（11）It is interior, the lower land（14）With aperture
（9）Lower surface contact.
2. gate valve as claimed in claim 1, it is characterised in that：The lower land（14）The small big taper land under.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720600714.5U CN206904268U (en) | 2017-05-26 | 2017-05-26 | A kind of gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720600714.5U CN206904268U (en) | 2017-05-26 | 2017-05-26 | A kind of gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206904268U true CN206904268U (en) | 2018-01-19 |
Family
ID=61285823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720600714.5U Active CN206904268U (en) | 2017-05-26 | 2017-05-26 | A kind of gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206904268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154070A (en) * | 2021-06-04 | 2021-07-23 | 泉高阀门科技有限公司 | Encryption gate valve convenient to maintain |
-
2017
- 2017-05-26 CN CN201720600714.5U patent/CN206904268U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154070A (en) * | 2021-06-04 | 2021-07-23 | 泉高阀门科技有限公司 | Encryption gate valve convenient to maintain |
| CN113154070B (en) * | 2021-06-04 | 2023-08-22 | 泉高阀门科技有限公司 | Encryption gate valve convenient to maintain |
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| GR01 | Patent grant |