CN207454787U - Very stiff and demanding sealing rotary butterfly valve - Google Patents
Very stiff and demanding sealing rotary butterfly valve Download PDFInfo
- Publication number
- CN207454787U CN207454787U CN201721371342.XU CN201721371342U CN207454787U CN 207454787 U CN207454787 U CN 207454787U CN 201721371342 U CN201721371342 U CN 201721371342U CN 207454787 U CN207454787 U CN 207454787U
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- valve rod
- valve
- sealing
- stiff
- dish plate
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Abstract
The utility model is related to a kind of very stiff and demanding sealing rotary butterfly valves, including valve body, valve rod and dish plate, runner is provided in valve body, valve rod driving dish plate rotates the cut-out or circulation of control runner, the portion perimeter that valve rod is located at runner is provided with internal spline, dish plate is provided with the linkage ring for being sheathed on valve rod, and linkage ring is corresponding with the position of internal spline and is provided with the external splines engaged with internal spline.Using the above program, the utility model, which provides, need not open up mounting hole between a kind of dish plate and valve rod, ensure the very stiff and demanding sealing rotary butterfly valve of valve rod intensity.
Description
Technical field
The utility model is specifically related to a kind of very stiff and demanding sealing rotary butterfly valve.
Background technology
It is a kind of opening and closing element to revolve butterfly valve（Dish plate）It is driven by valve rod, and the valve to rotate around ball valve axis, and it is hard
Sealing rotary butterfly valve of boldly confronting a powerful opponent is then sealing surface of seat and butterfly plate sealing surface is the rotation butterfly valve of hard sealing surface.
There are the following problems in very stiff and demanding sealing rotary butterfly valve routine work：1. dish plate passes through fixing piece（Fixed pin is solid
Determine bolt）It links with valve rod, it is necessary to open up pin hole or threaded hole on valve rod in advance, valve rod can be reduced by opening up pin hole or threaded hole
Intensity, the particularly big valve of very stiff and demanding this valve rod rotation torque of sealing rotary butterfly valve, easily to valve rod after valve rod strength reduction
It damages；2. the sealing between traditional valve body sealing surface and butterfly plate sealing surface coordinated by rigid seal realize, it is necessary to compared with
Big torque just can rotate dish plate, go higher to driving force, and operational wear will be fast repeatedly.
The content of the invention
In view of the deficienciess of the prior art, the purpose of this utility model is to provide need not between a kind of dish plate and valve rod
Mounting hole is opened up, ensures the very stiff and demanding sealing rotary butterfly valve of valve rod intensity.
To achieve the above object, the utility model provides following technical solution：It is described including valve body, valve rod and dish plate
Valve body in be provided with runner, valve rod driving dish plate rotates the cut-out or circulation of control runner, it is characterised in that：It is described
Valve rod be located at the portion perimeter of runner and be provided with internal spline, the dish plate is provided with the linkage ring for being sheathed on valve rod, described
Linkage ring it is corresponding with the position of internal spline and be provided with the external splines engaged with internal spline.
By using above-mentioned technical proposal, installed and linked by the way of spline linkage, avoided because opening up installation
Hole and reduce valve rod intensity, and spline linkage bearing capacity is good, and to neutral good, the torque for bearing valve rod is uniform.
The utility model is further arranged to：The internal spline is symmetrically disposed on valve rod two on runner central axis
Side.
By using above-mentioned technical proposal, symmetrically arranged internal spline is formed with linkage ring and installed at two, improves dish
Mounting stability between plate and valve rod.
The utility model is further arranged to：The dish plate is provided with the lip ring with valve seal cooperation, institute
The section for the lip ring stated is in J shapes, and including linearly mounting portion and sweeping sealing fit portion, institute
The mounting portion stated is installed on dish plate, and the valve body is provided with the annular sealing surface with lip ring sealing cooperation, described
Sealing fit portion offsets with annular sealing surface and forms the linear sealing of dish plate and valve seat.
By using above-mentioned technical proposal, annular sealing surface forms linear sealing with sealing fit portion, reduces sealing area, from
And the two abrasion is reduced, the material of lip ring is stainless steel, can be in lip ring and ring packing according to material characteristic
Micro deformation after the contact of face is further reduced abrasion, and provides pretightning force for sealing.
The utility model is further arranged to：The annular sealing surface gradually increases with the orient diameter close to valve rod
Add.
By using above-mentioned technical proposal, when dish plate changes from dissengaged positions to circulation status, oblique annular
Sealing surface can be rapidly separated dish plate, reduce contact duration, so as to reduce torque increase caused by abrasion and friction, accelerate behaviour
Make rate.
The utility model is further arranged to：The valve body is located at the upper rotation for being provided with above runner and being rotated for valve rod
Chamber, is provided with the lower rotation chamber rotated for valve rod below the runner, the upper rotation chamber and lower rotation chamber respectively with valve rod
Between be provided with self-lubricating bearing.
By using above-mentioned technical proposal, self-lubricating bearing is added, start-stop performance is reliable and stable, and abrasion is small, and rub small, power
Square is light, and reduction pair and bearing are lubricated caused inconvenience.
The utility model is further arranged to：Several be stacked is set to add between the upper rotation cavity wall and stem outer circumference
The airtight and watertight padding of arrangement, the contact surface between the adjacent airtight and watertight padding is in inverted W-shape, the upper rotation chamber position
Limited step is provided with below airtight and watertight padding, is provided with squeeze airtight and watertight padding to limited step above airtight and watertight padding
Gland.
By using above-mentioned technical proposal, contact surface is added as W-shaped airtight and watertight padding, there is function of self-tightening, the pressure of gland
Power is higher, and sealing performance is better, therefore the pressure of gland can be reduced under the requirement of certain tightness, reduces valve rod and is filled out with sealing
The frictional force of material so as to reduce driving torque, ensures that valve rod will not bite.
The utility model is further described with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is the structure diagram of specific embodiment of the present invention；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Fig. 3 is the enlarged drawing of B in Fig. 1.
Specific embodiment
As shown in Fig. 1-Fig. 3, the utility model discloses a kind of very stiff and demanding sealing rotary butterfly valve, including valve body 1, valve rod 2 and
Dish plate 3, is provided with runner 11 in valve body 1, and valve rod 2 drives dish plate 3 to rotate the cut-out or circulation of control runner 11, and valve rod 2 is located at
The portion perimeter of runner 11 is provided with internal spline, and dish plate 3 is provided with the linkage ring 31 for being sheathed on valve rod 2, linkage ring 31 and interior flower
The position of key is corresponding and is provided with the external splines engaged with internal spline, using spline linkage by the way of link, avoid because
It opens up mounting hole and reduces by 2 intensity of valve rod, and spline linkage bearing capacity is good, to neutral good, it is uniform to bear the torque of valve rod 2,
Internal spline realizes the axially position of opposite valve rod 2 with external splines close-fitting.
Internal spline is symmetrically disposed on 2 both sides of valve rod, symmetrically arranged internal spline and linkage ring on 11 central axis of runner
31 form installation installation at two, improve the mounting stability between dish plate 3 and valve rod 2.
Dish plate 3 is provided with the lip ring 4 with the sealing cooperation of valve body 1, and the section of lip ring 4 is in J shapes, and
Including linearly mounting portion 41 and sweeping sealing fit portion 42, mounting portion 41 is installed on dish plate 3, and valve body 1 is set
There is the annular sealing surface 12 with the sealing cooperation of lip ring 4, sealing fit portion 42 offsets with annular sealing surface 12 and forms dish plate 3
With the linear sealing of valve seat, annular sealing surface 12 forms linear sealing with sealing fit portion 42, reduces sealing area, so as to reduce the two
Abrasion, the material of lip ring 4 is stainless steel, according to material characteristic, can be contacted in lip ring 4 with annular sealing surface 12
Micro deformation afterwards is further reduced abrasion, and provides pretightning force for sealing, is provided on dish plate 3 and is mutually fitted with 41 shape of mounting portion
The mounting groove 32 matched somebody with somebody and the pressing plate 33 that mounting portion 41 is fixed on to mounting groove 32, annular sealing surface 12 covered with lip ring
The sealing ring 13 of 4 sealing cooperations.
Annular sealing surface 12 is gradually increased with the orient diameter close to valve rod 2, in dish plate 3 from dissengaged positions to circulation shape
When state changes, oblique annular sealing surface 12 can be rapidly separated dish plate 3, reduce contact duration, so as to reduce abrasion and
Torque caused by friction increases, and speed operations rate.
Valve body 1 is located at 11 top of runner and is provided with the upper rotation chamber 14 rotated for valve rod 2, is provided with positioned at 11 lower section of runner
For the lower rotation chamber 15 that valve rod 2 rotates, upper rotation chamber 14 and lower rotation chamber 15 are provided with self-lubricating bearing between valve rod 2 respectively
5, self-lubricating bearing 5 is added, start-stop performance is reliable and stable, and abrasion is small, and friction is small, and torque is light, and reduction pair and bearing moisten
It is inconvenient caused by cunning.
It is upper to rotate the airtight and watertight paddings 6 that several stackings are set plus are arranged between 2 periphery of 14 inner wall of chamber and valve rod, adjacent sealing
In inverted W-shape, upper rotation chamber 14 is located at 6 lower section of airtight and watertight padding and is provided with limited step contact surface 61 between filler 6
141, the gland 142 for squeezing airtight and watertight padding 6 to limited step 141 is provided with above airtight and watertight padding 6, adds contact surface 61
For W-shaped airtight and watertight padding 6, there is function of self-tightening, the pressure of gland 142 is higher, and sealing performance is better, therefore in certain tightness
Requirement under can reduce the pressure of gland 142, reduce valve rod 2 and the frictional force of airtight and watertight padding 6, so as to reduce driving torque, protect
Card valve rod 2 will not bite.
Noun in relation to orientation in text, such as above and below, is used only as representing relative position relation, and unspecified directions.
Claims (6)
1. including valve body, valve rod and dish plate, runner is provided in the valve body for a kind of very stiff and demanding sealing rotary butterfly valve, described
Valve rod driving dish plate rotates the cut-out or circulation of control runner, it is characterised in that：The valve rod is located at the portion perimeter of runner
Internal spline is provided with, the dish plate is provided with the linkage ring for being sheathed on valve rod, the position phase of the linkage ring and internal spline
It corresponds to and is provided with the external splines engaged with internal spline.
2. very stiff and demanding sealing rotary butterfly valve according to claim 1, it is characterised in that：The internal spline is on runner center
Axisymmetrical is arranged at valve rod both sides.
3. very stiff and demanding sealing rotary butterfly valve according to claim 1 or 2, it is characterised in that：The dish plate is provided with and valve
The lip ring of body sealing cooperation, the section of the lip ring is in J shapes, and including linearly mounting portion
And sweeping sealing fit portion, the mounting portion are installed on dish plate, the valve body is provided with close with lip ring
The annular sealing surface of cooperation is sealed, the sealing fit portion offsets with annular sealing surface and forms the linear sealing of dish plate and valve seat.
4. very stiff and demanding sealing rotary butterfly valve according to claim 3, it is characterised in that：The annular sealing surface is with close
The orient diameter of valve rod gradually increases.
5. very stiff and demanding sealing rotary butterfly valve according to claim 1 or 2, it is characterised in that：The valve body is located on runner
Side is provided with the upper rotation chamber rotated for valve rod, the lower rotation chamber rotated for valve rod is provided with below runner, described is upper
It rotates chamber and lower rotation chamber is provided with self-lubricating bearing between valve rod respectively.
6. very stiff and demanding sealing rotary butterfly valve according to claim 5, it is characterised in that：The upper rotation cavity wall and valve rod
Several airtight and watertight paddings being stacked plus arrange are set between periphery, and the contact surface between the adjacent airtight and watertight padding is in inverted
W-shape, the upper rotation chamber, which is located at below airtight and watertight padding, is provided with limited step, and being provided with above airtight and watertight padding will be close
The gland that packing material is squeezed to limited step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371342.XU CN207454787U (en) | 2017-10-23 | 2017-10-23 | Very stiff and demanding sealing rotary butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371342.XU CN207454787U (en) | 2017-10-23 | 2017-10-23 | Very stiff and demanding sealing rotary butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454787U true CN207454787U (en) | 2018-06-05 |
Family
ID=62281318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721371342.XU Active CN207454787U (en) | 2017-10-23 | 2017-10-23 | Very stiff and demanding sealing rotary butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898745A (en) * | 2021-10-19 | 2022-01-07 | 浙江新华阀门制造有限公司 | High-temperature vacuum butterfly valve with water cooling function |
-
2017
- 2017-10-23 CN CN201721371342.XU patent/CN207454787U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898745A (en) * | 2021-10-19 | 2022-01-07 | 浙江新华阀门制造有限公司 | High-temperature vacuum butterfly valve with water cooling function |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |