CN205745337U - Full welding Bidirectional pressure hard seal butterfly valve - Google Patents
Full welding Bidirectional pressure hard seal butterfly valve Download PDFInfo
- Publication number
- CN205745337U CN205745337U CN201620447029.9U CN201620447029U CN205745337U CN 205745337 U CN205745337 U CN 205745337U CN 201620447029 U CN201620447029 U CN 201620447029U CN 205745337 U CN205745337 U CN 205745337U
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- Prior art keywords
- valve
- valve seat
- seat insert
- radial direction
- convex shoulder
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Abstract
This utility model relates to a kind of full welding Bidirectional pressure hard seal butterfly valve, and including valve body, valve seat, butterfly plate, valve rod and drive mechanism, valve body, butterfly plate, valve rod use three eccentricity structure；Mainly valve seat uses floating valve seat, this floating valve seat is made up of valve seat insert, resilient, elastomeric, pressure ring and pendant collet, on the radial direction convex shoulder that valve seat insert is fitted in valve channel by pressure ring and pendant collet, valve seat insert one end is shaped with radially step, and resilient, elastomeric is arranged between the radial direction convex shoulder in the radial direction step of valve seat insert and valve channel；In the middle part of valve seat insert, periphery is shaped with annular seal groove, mounting O-shaped sealing ring in this annular seal groove.When reverse media pressure promotes butterfly plate to lift off a seat, the most also promoting valve seat insert elasticity of compression O, push valve seat insert to butterfly plate, make both keep sealing mated condition, two way seal performance is good.It is applicable to bi-directional medium pipeline.
Description
Technical field
This utility model belongs to valve field, specifically about a kind of butterfly valve.This utility model is applicable to
Bi-directional medium pipeline.
Background technology
Butterfly valve is widely used in the medium conveyance conduit of all fields of national economy because of its simple in construction, conveniently opening and closing
On, its structure includes valve body, valve seat, butterfly plate, valve rod and drive mechanism, and the side of butterfly plate is fixedly mounted on
On valve rod, butterfly plate sealing surface cooperates with sealing surface of seat, and valve rod drives butterfly plate 90 ° to rotate and realizes opening
Or shutoff operation.Its major defect is under reverse media pressure effect, owing to existing between valve rod and valve body
Fit clearance, medium promotes butterfly plate to move to the direction of sealing surface of lifting off a seat, makes between butterfly plate and valve seat
Seal pressure reduces, and even leaks, and reverse sealing property is poor.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, it is provided that a kind of positive and negative both direction
The full welding Bidirectional pressure hard seal butterfly valve of good seal performance.
The technical solution of the utility model includes valve body, valve seat, butterfly plate, valve rod and drive mechanism, valve body,
Butterfly plate, valve rod use three eccentricity structure；Mainly valve seat uses floating valve seat, and this floating valve seat is close by valve seat
Seal, resilient, elastomeric, pressure ring and pendant collet composition, be provided with radially in the valve channel at valve rod
Convex shoulder, on the radial direction convex shoulder that valve seat insert is fitted in valve channel by pressure ring and pendant collet, valve base sealing
Circle one end is shaped with radially step, the radial width of this radial direction step and the radial direction of the radial direction convex shoulder in valve channel
Width is equal, and resilient, elastomeric is arranged on radial direction step and the radial direction convex shoulder in valve channel of valve seat insert
Between；In the middle part of valve seat insert, periphery is shaped with annular seal groove, and in this annular seal groove, mounting O-shaped is close
Seal；Pressure ring one end is fitted on the end face of the valve seat insert other end, and the pressure ring other end is fitted in pendant collet
Side, pendant collet is inlaid in the radial direction mounting groove of valve channel inwall, pressure ring and pendant collet plane inner circle
Circumferential direction uniformly installs screw.
Preferably, the corresponding position in planar annular between pressure ring and valve seat insert is uniformly arranged location
Hole, installs alignment pin in this hole, location.
The utility model has the advantages that valve seat uses by valve seat insert, resilient, elastomeric, pressure ring and pendant collet
The floating valve seat of composition, when reverse media pressure promotes butterfly plate to lift off a seat, also promotes valve base sealing simultaneously
Circle elasticity of compression O, pushes valve seat insert to butterfly plate, makes both keep sealing mated condition, two-way
Good seal performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial structurtes enlarged drawing in this utility model Fig. 1 at I.
1 valve body, 2 butterfly plates, 3 valve rods, 4 drive mechanisms, 5 valve seat inserts, 6 resilient, elastomeric, 7 pressures
Ring, 8 pendant collets, 9 annular seal grooves, 10 radial direction convex shoulder, 11 sealing rings, 12 pressing plates, 13 alignment pins.
Detailed description of the invention
Full welding Bidirectional pressure hard seal butterfly valve as shown in Figure 1, including valve body 1, valve seat, butterfly plate 2, valve rod
3 and drive mechanism 4, valve body 1, butterfly plate 2, valve rod 3 use three eccentricity structure；Valve seat uses floating valve seat,
This floating valve seat is made up of valve seat insert 5, resilient, elastomeric 6, pressure ring 7 and pendant collet 8；Near valve
Being provided with radially convex shoulder 10 in valve body 1 passage at bar 3, this radial direction convex shoulder 10 is convex to valve body 1 channel center
Going out annular convex shoulder, valve seat insert 5 is fitted in the radial convex in valve body 1 passage by pressure ring 7 and pendant collet 8
On shoulder 10, the valve seat insert 5 periphery near radially convex shoulder 10 one end is shaped with radially step, and this is radially
The radial width of step is equal with the radial width of the radial direction convex shoulder 10 in valve body 1 passage, makes valve seat insert
The periphery of 5 radial direction steps is dynamic with valve body 1 vias inner walls to be coordinated, the axle inside valve seat insert 5 radially step
Coordinate with in radially convex shoulder 10, circular hole is dynamic to the face of cylinder, the cylindrical that i.e. two diameters of valve seat insert 5 are different
Face is dynamic with the interior circular hole of valve body 1 vias inner walls and radial direction convex shoulder 10 respectively to be coordinated, and resilient, elastomeric 6 is arranged on
Between radial direction convex shoulder 10 in the radial direction step of valve seat insert 5 and valve body 1 passage, reverse media promotes valve
Resilient, elastomeric 6 is compressed by seat sealing ring 5, makes a sealing ring 5 press tight sealing engagement to butterfly plate 2, it is achieved
Floating valve seat function, as shown in Figure 2；In the middle part of valve seat insert 5, periphery is shaped with annular seal groove 9, should
Mounting O-shaped sealing ring in annular seal groove 9, it is achieved valve seat insert 5 periphery and valve body 1 vias inner walls
Between sealing；One end face of pressure ring 7 is fitted on the end face of valve seat insert 5 other end, pressure ring 7
Another end face is fitted in the side of pendant collet 8, and pendant collet 8 is inlaid in the radial direction peace of valve body 1 vias inner walls
In tankage, screw is uniformly installed in pressure ring 7 and pendant collet 8 plane inner periphery direction, prevents pendant collet 8 from dropping.
The corresponding position in planar annular between pressure ring 7 and valve seat insert 5 is uniformly arranged hole, location,
In this hole, location install alignment pin 13, by the circumferential registration of pendant collet 8, prevent valve seat insert 5,
Pressure ring 7 circumferencial direction rotates.Installing sealing ring 11 on butterfly plate 2, this sealing ring 11 has and valve seat insert
5 sealing surfaces cooperated, sealing ring 11 is fixedly mounted on butterfly plate 2 by pressing plate 12.
Claims (2)
1. a full welding Bidirectional pressure hard seal butterfly valve, including valve body (1), valve seat, butterfly plate (2), valve rod
(3) and drive mechanism (4), valve body (1), butterfly plate (2), valve rod (3) use three eccentricity structure；Its
Feature be valve seat use floating valve seat, this floating valve seat by valve seat insert (5), resilient, elastomeric (6),
Pressure ring (7) and pendant collet (8) composition；It is provided with footpath in valve body (1) passage at close valve rod (3) place
To convex shoulder (10), valve seat insert (5) is fitted in valve body (1) by pressure ring (7) and pendant collet (8) and leads to
On radial direction convex shoulder (10) in road, valve seat insert (5) is near the periphery of radially convex shoulder (10) one end
It is shaped with radially step, the radial width of this radial direction step and the radial direction convex shoulder (10) in valve body (1) passage
Radial width is equal, and resilient, elastomeric (6) is arranged on radial direction step and the valve body (1) of valve seat insert (5)
Between radial direction convex shoulder (10) in passage；At valve seat insert (5) middle part, periphery is shaped with annular seal groove
(9), this annular seal groove (9) interior mounting O-shaped sealing ring；One end face of pressure ring (7) is fitted in valve
On the end face of seat sealing ring (5) other end, pressure ring (7) another end face is fitted in the one of pendant collet (8)
Side, pendant collet (8) is inlaid in the radial direction mounting groove of valve body (1) vias inner walls, and pressure ring (7) is opened with four
Screw is uniformly installed in ring (8) plane inner periphery direction.
Full welding Bidirectional pressure hard seal butterfly valve the most according to claim 1, is characterized in that pressure ring (7)
And the corresponding position in the planar annular between valve seat insert (5) is uniformly arranged hole, location, in this location
Alignment pin (13) is installed in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447029.9U CN205745337U (en) | 2016-05-10 | 2016-05-10 | Full welding Bidirectional pressure hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620447029.9U CN205745337U (en) | 2016-05-10 | 2016-05-10 | Full welding Bidirectional pressure hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205745337U true CN205745337U (en) | 2016-11-30 |
Family
ID=57363605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620447029.9U Active CN205745337U (en) | 2016-05-10 | 2016-05-10 | Full welding Bidirectional pressure hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205745337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781446A (en) * | 2017-11-28 | 2018-03-09 | 西铁阀门科技有限公司 | The universal automatic compensation valve seat snap ring pressure plate type valve of Bidirectional pressure |
-
2016
- 2016-05-10 CN CN201620447029.9U patent/CN205745337U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781446A (en) * | 2017-11-28 | 2018-03-09 | 西铁阀门科技有限公司 | The universal automatic compensation valve seat snap ring pressure plate type valve of Bidirectional pressure |
| CN107781446B (en) * | 2017-11-28 | 2023-07-18 | 西铁阀门科技有限公司 | Two-way pressure universal automatic compensation valve seat snap ring pressing plate type valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |