CN217328559U - Ball valve sealing structure - Google Patents
Ball valve sealing structure Download PDFInfo
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- CN217328559U CN217328559U CN202220940889.1U CN202220940889U CN217328559U CN 217328559 U CN217328559 U CN 217328559U CN 202220940889 U CN202220940889 U CN 202220940889U CN 217328559 U CN217328559 U CN 217328559U
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Abstract
The utility model discloses a ball valve sealing structure, including valve body, valve rod, electric actuator and the globular case that sets up in the valve body, be provided with the import and the export of fluid medium on the valve body, the valve rod connects electric actuator and globular case respectively, be connected through the valve rod seat between valve rod and the valve body, be equipped with the sealing member between valve rod seat and the valve body, be equipped with the arcwall face with globular case complex on the valve body of globular case orientation import and valve rod, be equipped with first seal receptacle and second seal receptacle on the arcwall face, first seal receptacle with the contact of globular case forms linear contact seal line, the second seal receptacle with the contact of globular case forms the contact surface and seals; adopt a plurality of seal receptacle, increase of service life, the leakproofness is good.
Description
Technical Field
The utility model relates to an electric ball valve technical field especially relates to a ball valve seal structure.
Background
The ball valve mainly plays roles of shunting, intercepting and changing flow direction in a pipeline, and has wide application in the field of marine valves. Most of the existing ball valve sealing seats are of concave structures, and the whole groove of the existing ball valve sealing seat is in contact with a ball body and plays a role in sealing when the ball body rotates. Because the sealing seat is in surface contact with the ball body, the sealing of the ball valve is influenced to a certain extent sometimes, and the sealing performance is reduced. When the valve rod drives the ball body to rotate, the torque is increased easily due to the compact sealing, the valve rod needs to be opened and closed by large force, and the valve rod is difficult to open. The existing solution is to change the structural shape of the sealing seat, for example, chinese patent ZL201721233480.1 discloses a ball valve sealing structure and a ball valve, which adopts a convex sealing structure, so that the sealing form of the sealing seat and the ball is changed from surface sealing to line sealing, and the contact area between the sealing seat and the ball is reduced; however, the whole sealing seat does not change much, the sealing seat has a large volume and is affected by the material of the sealing seat, and the sealing property between the sealing seat and the ball body is deteriorated due to aging or corrosion of the sealing seat when the sealing seat is used for a long time.
SUMMERY OF THE UTILITY MODEL
In view of the not long problem in seal receptacle life-span that exists at present, the utility model provides a ball valve seal structure adopts a plurality of seal receptacles, increase of service life, and the leakproofness is good.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
the utility model provides a ball valve seal structure, includes valve body, valve rod, electric actuator and sets up the globular case in the valve body, be provided with fluid medium's import and export on the valve body, electric actuator and globular case are connected respectively to the valve rod, be connected through the valve rod seat between valve rod and the valve body, be equipped with the sealing member between valve rod seat and the valve body, be equipped with on the valve body of globular case orientation import and valve rod with globular case complex arcwall face, be equipped with first seal receptacle and second seal receptacle on the arcwall face, first seal receptacle with globular case contact forms linear contact seal line, the second seal receptacle with globular case contact forms the contact surface and seals.
According to the utility model discloses an aspect, first seal receptacle is triangle circle seal receptacle, the bottom setting of triangle circle seal receptacle is in on the valve body, the apex angle end with globular case is contradicted, realizes that the first way between valve body and the globular case is sealed.
According to the utility model discloses an aspect, the one end setting of second seal receptacle is in on the valve body, the terminal surface of the other end is the arc to laminate with the outer wall arc of globular case, thereby the other end of second seal receptacle with the laminating of globular case outer wall is contradicted, realizes that the second between valve body and the globular case is said and is sealed.
According to an aspect of the utility model, the sealing member is the sealed pad of triangle, the port is equipped with triangle-shaped recess in the valve rod seat, the sealed pad setting of triangle-shaped is in the recess.
According to an aspect of the present invention, the outlet is connected with a connection pipe.
According to an aspect of the present invention, a sealing gasket is disposed between the connection pipe and the valve body.
According to an aspect of the present invention, a pressing cap is provided on the valve stem base, and the valve stem passes through the pressing cap.
According to the utility model discloses an aspect, be equipped with the sealing washer between valve rod and the valve body.
In accordance with an aspect of the present invention, the sealing ring is multi-layered.
According to an aspect of the present invention, the pressing cap is provided with a protective cover on an outer side thereof.
The utility model discloses the advantage of implementing: the gap between the spherical valve core and the inner wall of the valve body is reduced by adaptively arranging the inner wall of the valve body according to the shape of the outer wall of the spherical valve core, the first sealing seat and the second sealing seat are arranged, and the spherical valve core and the inner wall of the valve body are sealed through the combined action of a linear sealing line and an arc sealing surface, so that the contact area between the spherical valve core and the valve body is reduced, the sealing property of the ball valve is improved, the sealing property is good, the friction between the sealing seat and the valve core can be reduced by reducing the sealing area, the switching torque is reduced, and the ball valve is easier to open and close; the two seals make the ball valve more reliable in sealing performance. Furthermore, the sealing seat with a large size is avoided, two sealing seats with small sizes are adopted, and the problems that the sealing seat is easy to age and corrode to cause sealing failure and cannot be used for a long time are avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a ball valve sealing structure according to the present invention;
fig. 2 is an enlarged schematic view of a point a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a ball valve sealing structure includes a valve body 1, a valve rod 2, an electric actuator 3, and a ball valve core 4 disposed in the valve body, wherein an inlet 12 and an outlet 8 of a fluid medium are disposed on the valve body, the valve rod 2 is connected to the electric actuator 3 and the ball valve core 4, the valve rod 2 is connected to the valve body 1 through a valve rod seat 5, a sealing member 7 is disposed between the valve rod seat and the valve body, an arc surface matched with the ball valve core is disposed on the valve body of the ball valve core 4 facing the inlet 12 and the valve rod, a first sealing seat 41 and a second sealing seat 42 are disposed on the arc surface, the first sealing seat 41 is in contact with the ball valve core to form a linear contact sealing line, and the second sealing seat 42 is in contact with the ball valve core to form a contact surface seal.
In practical application, the first sealing seat 41 is a triangular ring sealing seat, the bottom end of the triangular ring sealing seat is arranged on the valve body, and the vertex angle end of the triangular ring sealing seat is abutted to the spherical valve core, so that the first sealing between the valve body and the spherical valve core is realized.
In practical application, one end of the second sealing seat 42 is arranged on the valve body, and the end face of the other end is arc-shaped and is in arc-shaped fit with the outer wall of the spherical valve core, so that the other end of the second sealing seat is in fit with the outer wall of the spherical valve core and is abutted against the outer wall of the spherical valve core, and a second seal between the valve body and the spherical valve core is realized.
In practical application, sealing member 7 is the triangle sealed pad, the port is equipped with triangle-shaped recess in the valve stem seat, the triangle sealed pad sets up in the recess.
In practical applications, a connecting pipe 9 is connected to the outlet.
In practical application, a sealing gasket 10 is arranged between the connecting pipe and the valve body.
In practical application, a pressure cap 6 is arranged on the valve rod seat, and the valve rod penetrates through the pressure cap.
In practical application, a sealing ring is arranged between the valve rod and the valve body.
In practical application, in order to enhance the sealing performance between the valve rod and the valve body, the sealing ring is arranged in multiple layers.
In practical application, a protective cover 11 is arranged on the outer side of the pressing cap.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The ball valve sealing structure is characterized in that an arc-shaped surface matched with the ball valve core is arranged on the valve body of the ball valve core facing the inlet and the valve rod, a first sealing seat and a second sealing seat are arranged on the arc-shaped surface, the first sealing seat is in contact with the ball valve core to form a linear contact sealing line, and the second sealing seat is in contact with the ball valve core to form a contact surface seal.
2. The ball valve sealing structure according to claim 1, wherein the first sealing seat is a triangular ring sealing seat, a bottom end of the triangular ring sealing seat is disposed on the valve body, and a top end of the triangular ring sealing seat abuts against the spherical valve core, so as to realize a first sealing between the valve body and the spherical valve core.
3. The ball valve sealing structure according to claim 1, wherein one end of the second sealing seat is disposed on the valve body, and an end surface of the other end of the second sealing seat is arc-shaped and is in arc-shaped fit with an outer wall of the spherical valve core, so that the other end of the second sealing seat is in fit abutment with the outer wall of the spherical valve core, and a second seal between the valve body and the spherical valve core is realized.
4. The ball valve seal arrangement of claim 1, wherein the seal is a triangular seal, the stem seat inner port having a triangular groove, the triangular seal being disposed in the groove.
5. The ball valve sealing structure of claim 1, wherein a nipple is connected to the outlet.
6. A ball valve sealing structure according to claim 5, characterized in that a sealing gasket is provided between the adapter tube and the valve body.
7. The ball valve sealing structure of claim 1, wherein a press cap is provided on the valve stem seat, and the valve stem is disposed through the press cap.
8. A ball valve sealing arrangement according to any one of claims 1 to 7, wherein a sealing ring is provided between the valve stem and the valve body.
9. The ball valve seal arrangement of claim 8, wherein said seal ring is multi-layered.
10. The ball valve sealing structure according to claim 8, wherein a protecting cover is provided outside the press cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220940889.1U CN217328559U (en) | 2022-04-21 | 2022-04-21 | Ball valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220940889.1U CN217328559U (en) | 2022-04-21 | 2022-04-21 | Ball valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217328559U true CN217328559U (en) | 2022-08-30 |
Family
ID=82949288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220940889.1U Active CN217328559U (en) | 2022-04-21 | 2022-04-21 | Ball valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217328559U (en) |
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2022
- 2022-04-21 CN CN202220940889.1U patent/CN217328559U/en active Active
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