CN207246458U - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN207246458U CN207246458U CN201721266934.5U CN201721266934U CN207246458U CN 207246458 U CN207246458 U CN 207246458U CN 201721266934 U CN201721266934 U CN 201721266934U CN 207246458 U CN207246458 U CN 207246458U
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- deck
- bonnet nut
- gasket
- 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
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- Sliding Valves (AREA)
Abstract
The utility model provides a kind of gate valve, including valve body, valve seat, valve rod, valve deck, flashboard and bonnet nut, the flashboard is equipped with annular groove, the annular groove is equipped with gasket, the gasket is abutted against with stem bottom, the valve deck is fixed on valve body by bonnet nut, and locking plate is additionally provided between the bonnet nut and valve deck, and this gate valve has the characteristics that simple in structure, easy to installation and maintenance, sealing effect is good.
Description
Technical field
It the utility model is related to a kind of gate valve.
Background technology
Existing gate valve includes valve body, valve seat, valve rod, valve deck, flexible disc, and flexible disc is directly connected with valve rod,
When valve is closed, there are two kinds of situations 1. when valve rod and flashboard and concentric valve body, when valve rod down moves, due to elastic lock
It is notching construction above plate, the both sides of stem bottom arched top groove on flashboard, when ram seal stress, valve rod can be by flashboard
The both sides on top strut at the same time.2. when valve rod and flashboard and valve body decentraction, when valve rod down moves, due to flexible disc
Top is notching construction, and stem bottom arched top, can be inclined by flashboard top on the certain point on flashboard in the both sides contact point of groove,
A small angle is produced, when ram seal stress, valve rod can strut on the both sides on flashboard top at the same time, both the above situation
It can make flashboard bearing up-down force uneven, influence valve seal performance, increase sealed cover ratio pressure, aggravate abrasion.
Bonnet nut is threadedly attached on valve deck, and bonnet nut usually has several ways to prevent that nut is loose after spinning
It is de-, first, nut is welded on valve deck with spot welding, second, matching somebody with somebody auger shell pit on valve body and nut, then match somebody with somebody a holding screw,
The mode of direct spot welding is unfavorable for detachable maintaining, and auger shell pit matches somebody with somebody the mode of firm screw again in bonnet nut, although
Detachably, but need more screws elastic, while also influence the self-strength of bonnet nut.
The content of the invention
The utility model provides a kind of gate valve simple in structure, easy to installation and maintenance, sealing effect is good.
In order to solve the above technical problems, the utility model uses following technical scheme：A kind of gate valve, including valve body, valve seat,
Valve rod, valve deck, flashboard and bonnet nut, the flashboard are equipped with annular groove, and the annular groove is equipped with gasket, the pad
Piece is abutted against with stem bottom, and the valve deck is fixed on valve body by bonnet nut, between the bonnet nut and valve deck also
Equipped with locking plate.
The beneficial effects of the utility model are：Annular groove is opened up on flashboard and gasket is set, makes gasket and valve rod bottom
Portion abuts against, no matter valve rod and the same decentraction of flashboard and valve body, when ram seal stress, flashboard will not be strutted by valve rod,
Until valve body and ram seal, will not stress biasing, valve plate side, can be preferably with sealing face paste only by medium active force
Close, improve valve seal performance, reduce the abrasion of sealing surface, extend life of valve.Also set up between bonnet nut and valve deck
Locking plate, there is provided bonnet nut it is anti-loose, while can be easy to remove and repair again.
The utility model is provided with reference to the accompanying drawings and examples and is further described in detail.
Brief description of the drawings
Fig. 1 is the structure diagram of gate valve provided by the utility model.
Embodiment
As shown in Figure 1, a kind of gate valve provided by the utility model, including valve body 1, valve seat 2, valve rod 3, valve deck 4, flashboard 5
With bonnet nut 6, the flashboard 5 is equipped with annular groove 7, and the annular groove 7 is equipped with gasket 8, the gasket 8 and valve rod
3 bottoms abut against, and the valve deck 4 is fixed on valve body 1 by bonnet nut 6, are also set between the bonnet nut 6 and valve deck 4
There is locking plate 9.
Claims (1)
- A kind of 1. gate valve, it is characterised in that：Including valve body (1), valve seat (2), valve rod (3), valve deck (4), flashboard (5) and valve deck spiral shell Female (6), the flashboard (5) are equipped with annular groove (7), and the annular groove (7) is equipped with gasket (8), the gasket (8) and Valve rod (3) bottom abuts against, and the valve deck (4) is fixed on valve body (1) by bonnet nut (6), the bonnet nut (6) and Locking plate (9) is additionally provided between valve deck (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721266934.5U CN207246458U (en) | 2017-09-29 | 2017-09-29 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721266934.5U CN207246458U (en) | 2017-09-29 | 2017-09-29 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207246458U true CN207246458U (en) | 2018-04-17 |
Family
ID=61889499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721266934.5U Expired - Fee Related CN207246458U (en) | 2017-09-29 | 2017-09-29 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207246458U (en) |
-
2017
- 2017-09-29 CN CN201721266934.5U patent/CN207246458U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180417 |