CN214789099U - J-shaped triple eccentric butterfly valve - Google Patents
J-shaped triple eccentric butterfly valve Download PDFInfo
- Publication number
- CN214789099U CN214789099U CN202121463771.6U CN202121463771U CN214789099U CN 214789099 U CN214789099 U CN 214789099U CN 202121463771 U CN202121463771 U CN 202121463771U CN 214789099 U CN214789099 U CN 214789099U
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- Prior art keywords
- valve
- valve body
- plate
- eccentric
- valve plate
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- 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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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000012856 packing Methods 0.000 claims description 20
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000009987 spinning Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a three eccentric butterfly valves of J type, including the valve body, be equipped with the valve rod that can rotate in the longitudinal hole of valve body, be equipped with the valve port on the horizontal direction of valve body, there is the valve plate in the valve port, the edge of valve plate is three eccentric seal faces of sphere, and one side of valve port is fixed with the disk seat through the valve body clamping ring, valve plate circumference seal face is three eccentric sphere structure, and the seal line that forms when the seal face of disk seat and valve plate sphere is sealed has eccentricity b with the central line of valve rod, has interval e between the horizontal central line of valve plate and the center of valve rod, there is contained angle alpha between the central horizontal line of valve plate seal face and valve body; the special sealing form of the J-shaped triple eccentric butterfly valve is adopted by the butterfly valve, the valve plate adopts a spherical triple eccentric structure, the valve seat adopts the J-shaped formed by metal spinning, the sealing surface is prevented from being damaged due to impact, and meanwhile, the elastic compensation effect of the valve seat can achieve the effect of bidirectional sealing.
Description
Technical Field
The utility model relates to an eccentric butterfly valve, in particular to three eccentric butterfly valves of J type.
Background
A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk.
The butterfly valve can bear very small pressure difference due to the inherent characteristics, hard sealing gas cannot be completely cut off, the sealing surface of the three-eccentric hard sealing butterfly valve is inelastic and easy to damage, and the three-eccentric hard sealing butterfly valve is difficult to realize bidirectional sealing.
SUMMERY OF THE UTILITY MODEL
The utility model provides a three eccentric butterfly valves of J type are used for overcoming the sealed face inelasticity of butterfly valve among the prior art, damage easily and are difficult to realize two way seal's defect.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model discloses a J-shaped triple offset butterfly valve, which comprises a valve body, a rotatable valve rod is arranged in a longitudinal hole of the valve body, a valve port is arranged in the horizontal direction of the valve body, a valve plate is arranged in the valve port, the edge of the valve plate is a spherical triple offset sealing surface, one side of the valve port is fixed with a valve seat through a valve body clamping ring, the circumferential sealing surface of the valve plate is of a triple offset spherical surface structure, and a sealing line formed when the sealing surfaces of the valve seat and the spherical surface of the valve plate are sealed has an offset b from the central line of the valve rod; a distance e is reserved between the transverse center line of the valve plate and the center of the valve rod; an included angle alpha is formed between the sealing surface of the valve plate and the central horizontal line of the valve body.
Furthermore, a locating limiting sleeve and a semicircular ring are arranged below the valve plate, the valve plate is fixed on the valve rod through a pin, the valve seat is J-shaped, and the spherical surfaces of the valve seat and the valve plate are matched to form an elastic sealing surface.
Further, a shaft sleeve is arranged between the valve rod and the valve body and close to the valve port, a limiting sleeve and a semicircular ring are arranged inside the lower end of the valve body, a bottom cover is arranged outside the valve body, the bottom cover and the valve body are sealed through a winding pad, and the bottom cover is connected to the valve body through a fastening piece.
Furthermore, a packing gland and a packing gasket for compressing packing are arranged at the upper end of the valve body, a packing pressure plate is fixed above the packing gland, and the packing pressure plate is connected to the valve body through a fastener.
Further, the eccentricity b is, the interval e is, and the included angle α is.
The utility model discloses the beneficial effect who reaches is: the special sealing form of the J-shaped triple eccentric butterfly valve is adopted by the butterfly valve, the valve plate adopts a spherical triple eccentric structure, the valve seat adopts the J-shaped formed by metal spinning, the sealing surface is prevented from being damaged due to impact, and meanwhile, the elastic compensation effect of the valve seat can achieve the effect of bidirectional sealing.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic sectional view taken along the direction A in FIG. 1;
fig. 3 is a schematic structural view of the valve plate of the present invention.
In the figure: 1. a valve body; 2. a valve plate; 3. a valve stem; 4. a valve seat; 5. pressing a ring; 6. a shaft sleeve; 7. a padding liner; 8. a filler; 9. a packing gland; 10. a packing press plate; 11. a pin; 12. a limiting sleeve; 13. a semicircular ring; 14. a winding pad; 15. a bottom cover.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
As shown in fig. 1-3, a J-shaped triple offset butterfly valve comprises a valve body 1, wherein a rotatable valve rod 3 is arranged in a longitudinal hole of the valve body 1, a valve port is arranged in the valve body 1 in the horizontal direction, a valve plate 2 is arranged in the valve port, the edge of the valve plate 2 is a spherical triple offset sealing surface, and a valve seat 4 is fixed on one side of the valve port through a valve body pressing ring 5;
the circumferential sealing surface of the valve plate 2 is of a three-eccentric spherical structure, and an eccentric distance b is formed between a sealing line formed when the sealing surfaces of the valve seat 4 and the spherical surface of the valve plate 2 are sealed and the central line of the valve rod 3; a distance e is reserved between the transverse center line of the valve plate 2 and the center of the valve rod 3; an included angle alpha is formed between the sealing surface of the valve plate 2 and the central horizontal line of the valve body 1.
And a positioning limiting sleeve 12 and a semicircular ring 13 are arranged below the valve plate 2, the valve plate 2 is fixed on the valve rod 3 through a pin 11, the valve seat 4 is J-shaped, and the valve seat 4 and the valve plate 2 are matched in a spherical surface mode to form an elastic sealing surface.
A shaft sleeve 6 is arranged between the valve rod 3 and the valve body 1 and at a position close to the valve port, a limiting sleeve 12 and a semicircular ring 13 are arranged inside the lower end of the valve body 1, a bottom cover 15 is arranged outside the valve body 1, the bottom cover 15 and the valve body 1 are sealed through a winding pad 14, and the bottom cover 15 is connected to the valve body 1 through a fastening piece.
The upper end of the valve body 1 is provided with a packing gland 9 and a packing gasket 7 for compressing packing 8, a packing pressure plate 10 is fixed above the packing gland 9, and the packing pressure plate 10 is connected to the valve body 1 through a fastener.
This butterfly valve adopts the three eccentric butterfly valve special seal forms of J type, and valve plate 2 adopts three eccentric structures of sphere, and disk seat 4 adopts the J type that metal spinning formed, avoids sealed face to receive the impact and damages like this, and the elastic compensation effect of disk seat 4 can reach two way seal's effect simultaneously.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A J-shaped triple eccentric butterfly valve is characterized by comprising a valve body, wherein a rotatable valve rod is arranged in a longitudinal hole of the valve body, a valve port is arranged in the valve body in the horizontal direction, a valve plate is arranged in the valve port, the edge of the valve plate is a spherical triple eccentric sealing surface, and a valve seat is fixed on one side of the valve port through a valve body pressing ring;
the circumferential sealing surface of the valve plate is of a three-eccentric spherical structure, and a sealing line formed when the sealing surfaces of the valve seat and the valve plate spherical surface are sealed has an eccentric distance b from the central line of the valve rod;
a distance e is reserved between the transverse center line of the valve plate and the center of the valve rod;
an included angle alpha is formed between the sealing surface of the valve plate and the central horizontal line of the valve body.
2. The J-type triple offset butterfly valve of claim 1, wherein a retaining collar and a semi-circular ring are provided under the valve plate, the valve plate is fixed to the valve stem by a pin, the valve seat is J-shaped, and the spherical surfaces of the valve seat and the valve plate cooperate to form an elastic sealing surface.
3. The J-type triple offset butterfly valve according to claim 1, wherein a bushing is provided between the valve stem and the valve body at a position close to the valve port, a stop collar and a semi-circular ring are provided inside the lower end of the valve body, a bottom cover is provided outside the valve body, the bottom cover and the valve body are sealed by a wound gasket, and the bottom cover is connected to the valve body by a fastening member.
4. The J-type triple offset butterfly valve according to claim 1, wherein a packing gland and a packing gasket for compressing packing are provided at an upper end of the valve body, a packing pressure plate is fixed above the packing gland, and the packing pressure plate is connected to the valve body by a fastening member.
5. The J-type triple offset butterfly valve of claim 1, wherein the eccentricity b is, the spacing e is, and the included angle α is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121463771.6U CN214789099U (en) | 2021-06-30 | 2021-06-30 | J-shaped triple eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121463771.6U CN214789099U (en) | 2021-06-30 | 2021-06-30 | J-shaped triple eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214789099U true CN214789099U (en) | 2021-11-19 |
Family
ID=78715038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121463771.6U Expired - Fee Related CN214789099U (en) | 2021-06-30 | 2021-06-30 | J-shaped triple eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214789099U (en) |
-
2021
- 2021-06-30 CN CN202121463771.6U patent/CN214789099U/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 |
Granted publication date: 20211119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |