CN211315148U - Sealing structure applied to butterfly valve lip-shaped paste in pipeline - Google Patents
Sealing structure applied to butterfly valve lip-shaped paste in pipeline Download PDFInfo
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- CN211315148U CN211315148U CN201922266860.0U CN201922266860U CN211315148U CN 211315148 U CN211315148 U CN 211315148U CN 201922266860 U CN201922266860 U CN 201922266860U CN 211315148 U CN211315148 U CN 211315148U
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- valve
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Abstract
The utility model discloses a butterfly valve lip-shaped stick sealing structure applied to a pipeline, which comprises a valve plate, a valve body, a sealing ring and a pressure plate; the sealing ring consists of an outer ring with a conical section and an inner ring with a rectangular section; in the central axis direction of the valve plate, two side surfaces of the inner ring protrude two side surfaces of the outer ring; the pressure plate is fixedly connected to the left side surface of the valve plate; the sealing ring is embedded in an upper annular groove on the circumference of the joint of the pressure plate and the valve plate, and the outer ring part of the sealing ring protrudes out of the outer wall of the circumference of the joint of the pressure plate and the valve plate; the further improvement lies in that: the two side parts of the sealing surface of the outer circumference of the sealing ring are upwards protruded to form a left convex ring and a left convex ring with arc or triangle sections, thereby forming a lip-shaped structure: when the valve plate is in a closed state and liquid or gas media do not exist on two sides of the valve plate, the outer circumference sealing surface, the top of the left convex ring and the sealing surface of the valve body of the sealing ring are tightly matched to form a combined sealing structure. The utility model discloses it is convenient to change the sealing washer on line, and is sealed reliable, high pressure resistant.
Description
Technical Field
The utility model relates to a valve seal structure, concretely relates to butterfly valve seal structure.
Background
The butterfly valve comprises a valve plate, a valve body and a sealing ring, wherein the sealing ring is arranged on the valve plate, and when the valve plate is in a closed state, the outer circumference sealing surface of the sealing ring is tightly matched with the sealing surface of the valve body to form a sealing structure. The main defects of the existing butterfly valve are as follows: the sealing ring is embedded in the annular groove on the outer wall of the circumference of the valve plate, and the cost and the trouble are consumed for replacing the sealing ring on line.
Disclosure of Invention
The utility model discloses to prior art's not enough, provide a change butterfly valve lip type subsides seal structure of being applied to in the pipeline of sealing washer on line conveniently.
The utility model discloses a technical goal is realized to following technical scheme.
The butterfly valve lip-shaped sealing structure applied to the pipeline comprises a valve plate, a valve body and a sealing ring; the sealing ring is arranged on the valve plate, and when the valve plate is in a closed state, the outer circumference sealing surface of the sealing ring is tightly matched with the sealing surface of the valve body to form a sealing structure; the improvement is that: the device also comprises a pressure plate; the sealing ring consists of an outer ring with a conical section and an inner ring with a rectangular section; in the central axis direction of the valve plate, two side surfaces of the inner ring protrude two side surfaces of the outer ring; the pressure plate is fixedly connected to the left side surface of the valve plate through a screw; the circumference of the joint of the pressure plate and the valve plate is provided with an annular groove matched with the shape of the sealing ring, the sealing ring is embedded in the annular groove on the circumference of the joint of the pressure plate and the valve plate, and the outer ring part of the sealing ring partially protrudes out of the circumferential outer wall of the joint of the pressure plate and the valve plate.
In the above structure, the two side portions of the sealing surface of the outer circumference of the sealing ring are raised upwards to form a left convex ring and a left convex ring with circular arc or triangle sections, so as to form a lip-shaped structure: when the valve plate is in a closed state and liquid or gas media do not exist on two sides of the valve plate, the outer circumference sealing surface, the top of the left convex ring and the sealing surface of the valve body of the sealing ring are tightly matched to form a combined sealing structure.
Compared with the prior art, the utility model, following positive effect has:
1. the utility model is provided with a pressure plate, a sealing ring is composed of an outer ring with a conical section and an inner ring with a rectangular section, the two side surfaces of the inner ring are protruded out of the two side surfaces of the outer ring in the central axis direction of the valve plate, and the pressure plate is fixedly connected on the left side surface of the valve plate through screws; the circumference of the joint of the pressure plate and the valve plate is provided with an annular groove matched with the shape of the sealing ring, the sealing ring is embedded in the annular groove on the circumference of the joint of the pressure plate and the valve plate, the sealing ring can be conveniently detached as long as the pressure plate is detached, and thus, the online replacement of the sealing ring is very convenient.
2. The pressure plate extrudes the sealing ring to enable the sealing ring to radially protrude outwards, so that the sealing surface of the outer circumference of the sealing ring is more closely matched with the sealing surface of the valve body, and the sealing performance is obviously improved.
3. The two side parts of the sealing surface of the outer circumference of the sealing ring are upwards protruded to form a left convex ring and a left convex ring with arc or triangle sections, thereby forming a lip-shaped structure: when the valve plate is in a closed state and liquid or gas media do not exist on two sides of the valve plate, the outer circumference sealing surface, the top of the left convex ring and the sealing surface of the valve body of the sealing ring are tightly matched to form a combined sealing structure. The combined sealing structure has triple sealing, thereby increasing the sealing strength and obviously improving the sealing performance of the utility model; when the left side of the valve plate is pressurized by liquid or gas medium, the left convex ring of the sealing ring is more tightly matched with the sealing surface of the valve body under the action of medium pressure and forms double sealing with the sealing surface of the outer circumference of the sealing ring, so that the sealing is more reliable; when the right side of the valve plate is under the pressure of liquid or gas medium, the right convex ring of the sealing ring is more closely matched with the sealing surface of the valve body under the action of the medium pressure and forms double sealing with the outer circumferential sealing surface of the sealing ring, so that the sealing is more reliable and high-pressure resistant.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is an enlarged view of part I of FIG. 1.
Fig. 3 is an enlarged view of part ii of fig. 2.
Detailed Description
The invention will be further explained with reference to the following embodiments according to the attached drawings.
The butterfly valve lip type sticking sealing structure applied to the pipeline shown in the attached drawing comprises a valve plate 1, a valve body 4, a sealing ring 3 and a pressure plate 2.
The sealing ring 3 consists of an outer ring 3.1 with a conical section and an inner ring 3.2 with a rectangular section; in the central axis direction of the valve plate 1, two side surfaces of the inner ring 3.2 protrude two side surfaces of the outer ring 3.1; the pressure plate 2 is fixedly connected to the left side surface of the valve plate 1 through a screw; the circumference of the joint of the pressure plate 2 and the valve plate 1 is provided with an annular groove matched with the shape of the sealing ring 3, the sealing ring 3 is embedded in the annular groove on the circumference of the joint of the pressure plate 2 and the valve plate 1, and 3.1 parts of the outer ring of the sealing ring 3 protrude out of the circumference outer wall of the joint of the pressure plate 2 and the valve plate 1.
Two side parts of the outer circumferential sealing surface 3.3 of the sealing ring 3 are upwards protruded to form a left convex ring 3.3.1 and a left convex ring 3.3.2 with circular arc sections (in other embodiments, two side parts of the outer circumferential sealing surface 3.3 of the sealing ring 3 are upwards protruded to form a left convex ring 3.3.1 and a left convex ring 3.3.2 with triangular sections), so that a lip-shaped structure is formed: when the valve plate 1 is in a closed state and liquid or gas media do not exist on two sides of the valve plate 1, the outer circumference sealing surface 3.3, the top of the left convex ring 3.3.1, the top of the left convex ring 3.3.2 and the sealing surface 4.1 of the valve body 4 of the sealing ring 3 are tightly matched to form a combined sealing structure.
Claims (2)
1. A butterfly valve lip type paste sealing structure applied to a pipeline comprises a valve plate (1), a valve body (4) and a sealing ring (3); the sealing ring (3) is arranged on the valve plate (1), and when the valve plate (1) is in a closed state, an outer circumference sealing surface (3.3) of the sealing ring (3) is tightly matched with a sealing surface (4.1) of the valve body (4) to form a sealing structure; the method is characterized in that: the device also comprises a pressure plate (2); the sealing ring (3) consists of an outer ring (3.1) with a conical section and an inner ring (3.2) with a rectangular section; in the central axis direction of the valve plate (1), two side surfaces of the inner ring (3.2) protrude out of two side surfaces of the outer ring (3.1); the pressure plate (2) is fixedly connected to the left side surface of the valve plate (1) through a screw; the circular groove matched with the shape of the sealing ring (3) is formed in the circumference of the joint of the pressure plate (2) and the valve plate (1), the sealing ring (3) is embedded in the circular groove in the circumference of the joint of the pressure plate (2) and the valve plate (1), and the outer ring (3.1) of the sealing ring (3) partially protrudes out of the circumference outer wall of the joint of the pressure plate (2) and the valve plate (1).
2. The butterfly valve lip-type sealing structure applied to the pipeline according to claim 1, wherein: two side parts of an outer circumference sealing surface (3.3) of the sealing ring (3) are upwards protruded to form a left convex ring (3.3.1) and a left convex ring (3.3.2) with circular arc or triangle sections, so that a lip-shaped structure is formed: when the valve plate (1) is in a closed state and liquid or gas media do not exist on two sides of the valve plate (1), the outer circumference sealing surface (3.3), the top of the left convex ring (3.3.1), the top of the left convex ring (3.3.2) and the sealing surface (4.1) of the valve body (4) are tightly matched to form a combined sealing structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920098078X | 2019-01-22 | ||
| CN201920098078 | 2019-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211315148U true CN211315148U (en) | 2020-08-21 |
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ID=72085097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922266860.0U Active CN211315148U (en) | 2019-01-22 | 2019-12-17 | Sealing structure applied to butterfly valve lip-shaped paste in pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211315148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005827A (en) * | 2019-01-22 | 2019-07-12 | 江苏远望仪器集团有限公司 | Sealing structure is pasted applied to the butterfly valve lip type in pipeline |
-
2019
- 2019-12-17 CN CN201922266860.0U patent/CN211315148U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005827A (en) * | 2019-01-22 | 2019-07-12 | 江苏远望仪器集团有限公司 | Sealing structure is pasted applied to the butterfly valve lip type in pipeline |
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