CN202040357U - Bidirectional static seal general-purpose gate valve - Google Patents
Bidirectional static seal general-purpose gate valve Download PDFInfo
- Publication number
- CN202040357U CN202040357U CN2011201365989U CN201120136598U CN202040357U CN 202040357 U CN202040357 U CN 202040357U CN 2011201365989 U CN2011201365989 U CN 2011201365989U CN 201120136598 U CN201120136598 U CN 201120136598U CN 202040357 U CN202040357 U CN 202040357U
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- CN
- China
- Prior art keywords
- flashboard
- valve
- hand wheel
- valve rod
- wheel shaft
- 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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- Mechanically-Actuated Valves (AREA)
- Sliding Valves (AREA)
Abstract
The utility model discloses a bidirectional static seal general-purpose gate valve, which comprises a hand wheel (14), a hand wheel shaft (11), a valve rod and a gate disc which are sequentially connected and a valve body (1). The hand wheel shaft (11) arranged inside an upper valve body is connected with the hand wheel (14) through a nut (16). A belleville spring (15) is disposed between the hand wheel (14) and the nut (16). A graphite metal mesh back seal part (12) is installed between the hand wheel shaft (11) and the upper valve body. A rolling bearing (13) is disposed at the joint of the hand wheel (14) and the valve body (1). The hand wheel shaft (11) provided with a cap (10) is connected with the valve rod in bayonet connection mode. A limiting ring (8) is disposed under a thrust bearing (9) which is disposed at the upper end of the valve rod. The gate disc which is connected with the lower end of the valve rod is composed of a dynamical friction gate disc and a static friction gate disc which is connected with the dynamical friction gate disc. The bidirectional static seal general-purpose gate valve has the advantages of good sealing performance, abrasion resistance and long service life.
Description
Technical field
The utility model relates to a kind of gate valve in the pipeline industry, the general gate valve of particularly a kind of two-way static seal.
Background technique
Gate valve its market share in the valve industry is the highest, and about more than 60%, and its shortcoming is also maximum, such as: its height dimension is big, and opening and closing time is long, filler quick abrasion, many defectives such as sealing surface weak point in working life.
Summary of the invention
At the defective of gate in the existing gate valve, the utility model provides a kind of two-way static seal general gate valve.
To achieve these goals, the measure taked of the utility model is:
The general gate valve of a kind of two-way static seal, comprise valve body and the handwheel that links to each other successively, hand wheel shaft, valve rod and flashboard, hand wheel shaft in the upper valve body links to each other with handwheel by nut, be provided with butterfly spring between handwheel and the nut, graphite wire netting back seal element is housed between hand wheel shaft and the upper valve body, the joint of handwheel and valve body is provided with rolling bearing, the hand wheel shaft that is equipped with and emits adopts the bayonet socket Placement to link to each other with valve rod, the valve rod upper end is provided with thrust-bearing, the below of thrust-bearing is provided with position limit cycle, and the flashboard that is connected the valve rod lower end is made up of kinetic friction flashboard that is connected and static friction flashboard;
Described static friction flashboard is made up of the first static friction flashboard and the second static friction flashboard, all be equipped with and connect supporting surface at the bottom of being equipped with four on the first static friction flashboard of hook and the second static friction flashboard, be provided with between the first static friction flashboard and the second static friction flashboard by Stem Mut and be connected kinetic friction flashboard on the valve rod, the lumen valve seat top of valve body is provided with the hook bearing;
Described kinetic friction flashboard is provided with and links up with corresponding convex shoulder;
Described valve rod is made up of the one-level valve rod and the secondary valve rod that link to each other.
The beneficial effects of the utility model: three shoe brake plates are parallel oblique mechanisms, it can contract tightly can unclamp again, can only parallelly move up and down, can not increase the gap between valve plate and the valve seat, can only keep the gap excessively to cooperate, forbid that medium washes away, weares and teares, help the two-sided static seal of flashboard, increase the working life of gate valve greatly.
Description of drawings
Fig. 1, structural representation of the present utility model;
Fig. 2, left view of the present utility model;
Fig. 3, hook unhook schematic representation of the present utility model.
Embodiment
The general gate valve of a kind of two-way static seal, comprise valve body 1 and the handwheel 14 that links to each other successively, hand wheel shaft 11, valve rod and flashboard, hand wheel shaft 11 in the upper valve body links to each other with handwheel 14 by nut 16, be provided with butterfly spring 15 between handwheel 14 and the nut 16, graphite wire netting back seal element 12 is housed between hand wheel shaft 11 and the upper valve body, handwheel 14 is provided with rolling bearing 13 with the joint of valve body 1, be equipped with and emit 10 hand wheel shaft 11 and valve rod to adopt the bayonet socket Placement to link to each other, the valve rod upper end is provided with thrust-bearing 9, the below of thrust-bearing 9 is provided with position limit cycle 8, and the flashboard that is connected the valve rod lower end is made up of kinetic friction flashboard 4 that is connected and static friction flashboard; Described static friction flashboard is made up of the first static friction flashboard 2 and the second static friction flashboard 3, all be equipped with on hook 18 the first static friction flashboard 2 and the second static friction flashboard 3 and be equipped with four supporting surfaces 17, be provided with between the first static friction flashboard 2 and the second static friction flashboard 3 by Stem Mut 5 and be connected kinetic friction flashboard 4 on the valve rod, the lumen valve seat top of valve body 1 is provided with hook bearing 20; Described kinetic friction flashboard 3 is provided with and links up with 18 corresponding convex shoulders 19; Described valve rod is made up of the one-level valve rod 6 and the secondary valve rod 7 that link to each other.
Oblique flashboard is designed to two-way static seal, two oblique flashboards of static seal there are four low supporting surface 17 middle parallel oblique flashboards that two symmetrical hooks 18 are housed that connect, this oblique flashboard is to cooperate by excessive with slit between the valve seat, because these two middle parallel oblique flashboards that supporting surface is arranged of oblique flashboard, easy on and off slides in parallel valve seat the inside, its gap is constant, can not increase, more can the clamping dirt, be designed to the trapezoidal steep-pitch thread of bull in centre with Stem Mut, this Stem Mut is exactly oblique flashboard 4, the parallel oblique flashboard with two of this oblique flashboard is by linking up with self-locking from opening mechanism, three flashboards are connected together automatically, and common performance function separately realizes two way sealed face static friction, there are not wearing and tearing.If the general gate valve of selecting for use sealing material Tungsten carbite or pottery to make can reach 30-50 its working life, utilize the secondary valve rod again, multiple thread makes the gate valve height descend 1/3rd, and opening and closing time can shorten 3-10 doubly.Below being provided with thrust-bearing 9 and handwheel, one-level valve rod upper end rolling bearing 13 is housed to reduce the power-assisted that rubs on the hand wheel shaft.Make the handwheel light and fast, lowering and work-saving.
11 hand wheel shafts drive 6 rotations of one-level valve rod when handwheel counterclockwise rotates, under the effect of oblique flashboard nut 4, force to rise, unclamp the forced seal specific pressure, tiltedly flashboard 4 continues to rise simultaneously, in the process that convex shoulder 19 Stem Mut convex shoulders rise, automatically promote hook 18, make hook 18 auto-closings force to tangle convex shoulder 19 Stem Mut self-lockings, under the effect of hook 18, automatically three shoe brake plates are connected together, automatically all collude up, open valve comprehensively.Otherwise when handwheel 14 clockwise directions are rotated, under the effect of hook 18, three shoe brake plates are forced to deliver to lower dead center together, hook bearing 20 spacing blocking force to rotate, and are automatically-unhooked, force to increase sealing and close until valve plate comprehensively.
The beneficial effects of the utility model: because three shoe brake plates of the general gate valve of this two-way static friction are parallel oblique mechanisms, it can contract tightly can unclamp again, can only parallelly move up and down, can not increase the gap between valve plate and the valve seat, can only keep the gap excessively to cooperate, forbid that medium washes away, weares and teares, help the two-sided static seal of flashboard,, increase the working life of gate valve greatly.
Those skilled in the art's simple change and replacement all are within protection scope of the present invention in related domain.
Claims (4)
1. general gate valve of two-way static seal, comprise valve body (1) and the handwheel that links to each other successively (14), hand wheel shaft (11), valve rod and flashboard, hand wheel shaft (11) in the upper valve body links to each other with handwheel (14) by nut (16), it is characterized in that: be provided with butterfly spring (15) between handwheel (14) and the nut (16), graphite wire netting back seal element (12) is housed between hand wheel shaft (11) and the upper valve body, handwheel (14) is provided with rolling bearing (13) with the joint of valve body (1), be equipped with and emit the hand wheel shaft (11) of (10) to adopt the bayonet socket Placement to link to each other with valve rod, the valve rod upper end is provided with thrust-bearing (9), the below of thrust-bearing (9) is provided with position limit cycle (8), and the flashboard that is connected the valve rod lower end is made up of the kinetic friction flashboard (4) and the static friction flashboard that are connected.
2. the general gate valve of a kind of two-way static seal according to claim 1, it is characterized in that: described static friction flashboard is made up of the first static friction flashboard (2) and the second static friction flashboard (3), all be equipped with on the first static friction flashboard (2) of hook (18) and the second static friction flashboard (3) and be equipped with four supporting surfaces (17), be provided with between the first static friction flashboard (2) and the second static friction flashboard (3) by Stem Mut (5) and be connected kinetic friction flashboard (4) on the valve rod, the lumen valve seat top of valve body (1) is provided with hook bearing (20).
3. the general gate valve of a kind of two-way static seal according to claim 1 and 2, it is characterized in that: described kinetic friction flashboard (3) is provided with and links up with (18) corresponding convex shoulder (19).
4. the general gate valve of a kind of two-way static seal according to claim 3 is characterized in that: described valve rod is made up of the one-level valve rod (6) and the secondary valve rod (7) that link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201365989U CN202040357U (en) | 2011-04-28 | 2011-04-28 | Bidirectional static seal general-purpose gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201365989U CN202040357U (en) | 2011-04-28 | 2011-04-28 | Bidirectional static seal general-purpose gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202040357U true CN202040357U (en) | 2011-11-16 |
Family
ID=44967800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201365989U Expired - Fee Related CN202040357U (en) | 2011-04-28 | 2011-04-28 | Bidirectional static seal general-purpose gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202040357U (en) |
-
2011
- 2011-04-28 CN CN2011201365989U patent/CN202040357U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20130428 |