CN203162325U - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN203162325U CN203162325U CN 201320200099 CN201320200099U CN203162325U CN 203162325 U CN203162325 U CN 203162325U CN 201320200099 CN201320200099 CN 201320200099 CN 201320200099 U CN201320200099 U CN 201320200099U CN 203162325 U CN203162325 U CN 203162325U
- Authority
- CN
- China
- Prior art keywords
- valve
- pressing plate
- gate
- gland
- compressed
- 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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- Details Of Valves (AREA)
Abstract
The utility model discloses a gate valve, which comprises a valve body, a gate plate, a valve stem and a valve cover, wherein the valve cover is fixedly connected onto the top of the valve body through bolts; the gate plate is arranged in a valve cavity of the valve body and is connected with the valve stem; the valve stem is connected with a valve stem nut through screw threads after passing through the middle of the valve cover; the valve stem nut is connected with a hand wheel; when the hand wheel rotates, the valve stem nut drives the valve stem and the gate plate to move up and down to turn on or off the valve; a filling sealing cavity is arranged at the top of the valve cover; filling is arranged in the filling sealing cavity, and is tightly pressed by a pressing sleeve; and the pressing sleeve is tightly pressed by a pressing plate which is tightly pressed by a pressing plate bolt. The gate valve is characterized in that disc springs are arranged between the pressing plate and the pressing sleeve. The gate valve has the advantages of being able to keep sealed for a long time.
Description
Technical field:
The utility model relates to a kind of improvement invention of gate valve.
Background technique:
Being of wide application of gate valve, present a kind of gate valve, its structure is such: comprise valve body, flashboard, valve rod and valve gap, valve gap is bolted to connection at the valve body top, flashboard is located in the valve body valve pocket and is connected with valve rod, valve rod is threaded with Stem Mut from the middle back of passing of valve gap, Stem Mut is connected with handwheel, when the handwheel rotation, Stem Mut drives valve rod and flashboard moves up and down opening or closing of realization valve, and the valve gap top is provided with the packing seal chamber, packing seal is provided with filler in the chamber, filler is compressed by gland, and gland is compressed by pressing plate, and pressing plate is compressed by follower bolt.The shortcoming that above-mentioned gate valve exists is: can only keep the impacting force of short period at every turn after follower bolt screws, every need not screwing follower bolt again for a long time, otherwise can not guarantee the sealing that gate valve is good for a long time, so have much room for improvement.
Summary of the invention:
At the deficiencies in the prior art, the purpose of this utility model aims to provide a kind of gate valve of sealing of keeping for a long time.
The technical solution adopted in the utility model is:
A kind of gate valve, comprise valve body, flashboard, valve rod and valve gap, valve gap is bolted to connection at the valve body top, flashboard is located in the valve body valve pocket and is connected with valve rod, valve rod is threaded with Stem Mut from the middle back of passing of valve gap, Stem Mut is connected with handwheel, when handwheel rotates, Stem Mut drives valve rod and flashboard moves up and down opening or closing of realization valve, and the valve gap top is provided with the packing seal chamber, and packing seal is provided with filler in the chamber, filler is compressed by gland, gland is compressed by pressing plate, and pressing plate is compressed by follower bolt, it is characterized in that: be provided with the dish spring between pressing plate and the gland.
The gate valve of technique scheme, when follower bolt compresses pressing plate, the dish spring also can be compressed, compressed dish spring plays two effects, the one, prevent that follower bolt from getting loose owing to valve working vibrations produce, the 2nd, the decrement of dish spring can compensate automatically to the compressing of filler, and filler is effectively compressed for a long time, so, gate valve just can keep sealing for a long time.
As preferably, be provided with two dish springs between pressing plate and the gland, the top end face of two dish springs offsets, and bottom end face offsets with pressing plate lower end surface and gland upper-end surface respectively.
Description of drawings:
Fig. 1 is structural drawing of the present utility model,
Fig. 2 is the I portion enlarged view of Fig. 1.
Embodiment:
As shown in the figure, gate valve of the present utility model, comprise valve body 11, flashboard 10, valve rod 8 and valve gap 9, valve gap 9 is bolted to connection at valve body 11 tops, flashboard 10 is located in valve body 11 valve pockets and is connected with valve rod 8, valve rod 8 is threaded with Stem Mut 1 from the valve gap 9 middle backs of passing, Stem Mut 1 is fixedlyed connected with handwheel 2, when handwheel 2 rotates, Stem Mut 1 rotates thereupon and drive valve rod 8 and flashboard 10 moves up and down opening or closing of realization valve, and valve gap 9 tops are provided with the packing seal chamber, are provided with filler 7 in the packing seal chamber, filler 7 is compressed by gland 6, gland 6 is compressed by pressing plate 3, and pressing plate 3 is compressed by follower bolt 4, is provided with two dish springs 5 between pressing plate 3 and the gland 6, the top end face of two dish springs 5 offsets, and bottom end face offsets with pressing plate 3 lower end surfaces and gland 6 upper-end surfaces respectively.
Claims (2)
1. gate valve, comprise valve body, flashboard, valve rod and valve gap, valve gap is bolted to connection at the valve body top, flashboard is located in the valve body valve pocket and is connected with valve rod, valve rod is threaded with Stem Mut from the middle back of passing of valve gap, Stem Mut is connected with handwheel, when handwheel rotates, Stem Mut drives valve rod and flashboard moves up and down opening or closing of realization valve, and the valve gap top is provided with the packing seal chamber, and packing seal is provided with filler in the chamber, filler is compressed by gland, gland is compressed by pressing plate, and pressing plate is compressed by follower bolt, it is characterized in that: be provided with the dish spring between pressing plate and the gland.
2. a kind of gate valve as claimed in claim 1, it is characterized in that: be provided with two dish springs between pressing plate and the gland, the top end face of two dish springs offsets, and bottom end face offsets with pressing plate lower end surface and gland upper-end surface respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320200099 CN203162325U (en) | 2013-04-19 | 2013-04-19 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320200099 CN203162325U (en) | 2013-04-19 | 2013-04-19 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203162325U true CN203162325U (en) | 2013-08-28 |
Family
ID=49023508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320200099 Expired - Fee Related CN203162325U (en) | 2013-04-19 | 2013-04-19 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203162325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289178A (en) * | 2017-08-16 | 2017-10-24 | 西诺威阀门控制（苏州）有限公司 | The pneumatic actuator of flat gate valve |
-
2013
- 2013-04-19 CN CN 201320200099 patent/CN203162325U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289178A (en) * | 2017-08-16 | 2017-10-24 | 西诺威阀门控制（苏州）有限公司 | The pneumatic actuator of flat gate 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: 20130828 Termination date: 20210419 |