CN214743470U - Eccentric ball valve capable of being sealed in two directions - Google Patents
Eccentric ball valve capable of being sealed in two directions Download PDFInfo
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- CN214743470U CN214743470U CN202120615135.4U CN202120615135U CN214743470U CN 214743470 U CN214743470 U CN 214743470U CN 202120615135 U CN202120615135 U CN 202120615135U CN 214743470 U CN214743470 U CN 214743470U
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Abstract
The utility model discloses a but two way seal's eccentric ball valve, including valve body, pressure disk, disk seat, elastic component, sealing member, ball core, valve rod, O type circle, the ball core rotates around the valve rod to be connected, and elastic component fixed connection is in the middle of pressure disk and disk seat, and the disk seat can float for valve rod axis direction is perpendicular, pressure disk, disk seat and elastic component constitute the sealing member jointly. This but clearance volume between two way seal's eccentric ball valve disk seat and valve body, this clearance can compensate valve rod rigidity deflection, makes disk seat and the accurate laminating of ball core, can both form high sealed specific pressure when the medium flow direction changes, realizes two way seal under the eccentric ball valve high pressure, simple structure, and different materials of disk seat back elastic component optional satisfy different temperature and pressure differential requirements.
Description
Technical Field
The utility model belongs to the control valve field, concretely relates to eccentric ball valve that can two way seal.
Background
The eccentric ball valve has small volume and has the functions of cutting off and regulating, and is widely used in tight cutting off and flow regulation.
Therefore, in order to solve the problem, the eccentric ball valve capable of being sealed in two directions needs to be developed to meet the requirement of practical use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a but two way seal's eccentric ball valve to it has pressure or changes the flow direction to solve current eccentric ball valve medium reversal, can influence the problem of its sealed effect.
In order to achieve the above object, the utility model provides a following technical scheme: a bi-directionally sealable eccentric ball valve comprising: valve body, pressure disk, disk seat, elastic component, sealing member, ball core, valve rod, O type circle, its characterized in that: the valve body (1) is of a cavity structure in the horizontal direction, the radius of the outer section of the cavity structure of the valve body is 5-20 cm, the pressure plate is a hollow frame structure with a rectangular cross section, the upper end and the lower end of the pressure plate are respectively fixedly connected to the valve body, the valve seat is positioned between the pressure plate and the ball core, the elastic piece is fixedly connected between the pressure plate and the valve seat, the upper end part of the pressure plate, the upper end part of the valve seat and the elastic part form a sealing element, the lower end part of the pressure plate, the lower end part of the valve seat and the elastic part form a sealing element, the ball core is of a hollow hemispherical three-dimensional structure, the internal diameter of the valve seat is 5-20 cm, the external diameter of the valve seat is 8-25 cm, the included angle between the valve rod and the cavity structure of the valve body is 0-90 degrees, and the valve seat can vertically float relative to the axial direction of the valve rod.
Preferably, the ball core is rotatably connected with the valve rod, the rotating angle of the ball core around the valve rod is 0-90 degrees, a rotatable rotating structure is arranged on the part of the outer surface of the ball core, which is in contact with the valve rod, a groove matched with the rotating structure is formed in the surface of the valve rod, the rotating structure is embedded in the groove and can rotate relative to the groove, the rotating angle is 0-90 degrees, the sealing element comprises an O-shaped ring, and the O-shaped ring is positioned on the outer surface of the valve seat.
Preferably, the upper end of the valve rod is connected with a driving part arranged outside the valve body, and the driving part can drive the ball core to rotate in the cavity.
Preferably, the outer surface of the valve rod is provided with a cavity structure with a U-shaped cross section, the cavity structure is fixedly connected to the outer surface of the valve rod, and a gap is formed between the valve seat and the cavity structure and is 0-20 mm in size.
Preferably, the O-shaped ring is made of elastic rubber materials, and the valve rod and the ball core are made of stainless steel materials.
The utility model discloses a technological effect and advantage: this but clearance volume between two way seal's eccentric ball valve disk seat and valve body, this clearance can compensate valve rod rigidity deflection, makes disk seat and the accurate laminating of ball core, can both form high sealed specific pressure when the medium flow direction changes, realizes two way seal under the eccentric ball valve high pressure, simple structure, and different materials of disk seat back elastic component optional satisfy different temperature and pressure differential requirements.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a partial cross-sectional view of the present invention;
fig. 3 is a schematic diagram of the present invention.
The reference numbers in the figures: valve body 1, pressure disk 2, valve seat 3, elastic component 4, sealing member 5, ball core 6, valve rod 7, O type circle 8.
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.
The utility model provides a but eccentric ball valve of two way seal as shown in the figure, include: valve body 1, pressure disk 2, disk seat 3, elastic component 4, sealing member 5, ball core 6, valve rod 7, O type circle 8, its characterized in that: the horizontal direction of the valve body 1 is a cavity structure, the radius of the external section of the cavity structure of the valve body 1 is 5-20 cm, the cross section of the pressure plate 2 is of a hollow frame structure with a rectangular shape, the upper end and the lower end of the pressure plate 2 are fixedly connected to the valve body 1 respectively, the valve seat 3 is positioned between the pressure plate 2 and the ball core 6, the elastic part 4 is fixedly connected between the pressure plate 2 and the valve seat 3, the upper end part of the pressure plate 2, the upper end part of the valve seat 3 and the elastic part 4 form a sealing part 5, the lower end part of the pressure plate 2, the lower end part of the valve seat 3 and the elastic part 4 form a sealing part 5, the ball core 6 is of a hollow hemispherical three-dimensional structure, the internal diameter of the ball core is 5-20 cm, the external diameter of the ball core is 8-25 cm, the included angle between the valve rod 7 and the cavity structure of the valve body 1 is 0-90 degrees, the valve seat 3 can float vertically relative to the axial direction of the valve rod 7.
Furthermore, the ball core 6 is rotatably connected with the valve rod 7, the angle of rotation of the ball core 6 around the valve rod 7 is 0-90 degrees, a rotatable rotating structure is arranged on the part of the outer surface of the ball core 6, which is in contact with the valve rod 7, a groove matched with the rotating structure is arranged on the surface of the valve rod 7, the rotating structure is embedded in the groove and can rotate relative to the groove, the rotating angle of the rotating structure is 0-90 degrees, the sealing element 5 comprises an O-shaped ring 8, and the O-shaped ring 8 is positioned on the outer surface of the valve seat.
Further, the outer surface of the valve rod 7 is provided with a cavity structure with a U-shaped cross section, the cavity structure is fixedly connected to the outer surface of the valve rod 7), and a gap is formed between the valve seat 3 and the cavity structure and is 0-20 mm in size.
Further, the O-ring 8 is made of an elastic rubber material, and the valve rod 7 and the ball core 6 are made of a stainless steel material.
The working principle is as follows: when the eccentric ball valve capable of being sealed in two directions is used, as shown in fig. 3, when a medium flows from the ball core to the valve seat, P1 is a high-pressure side, according to the principle of an eccentric structure, the medium pushes the ball core to form sealing specific pressure, and the medium acts on the ball core to form resultant force with the closing direction of the ball core, so that effective sealing of the core seat is ensured. Since the sealing force is increased as the medium pressure is increased, the cutting can be performed strictly even under high pressure.
When the medium flows from the valve seat to the ball core in fig. 3, P1 is the high pressure side, the medium acts on the valve seat, the gap between the valve seat and the valve rod is reduced to form the specific sealing pressure, and the larger the medium pressure is, the larger the sealing force is, so that the effective sealing is formed similarly, and the high pressure sealing is suitable.
This but clearance volume between two way seal's eccentric ball valve disk seat and valve body, this clearance can compensate valve rod rigidity deflection, makes disk seat and the accurate laminating of ball core, can both form high sealed specific pressure when the medium flow direction changes, realizes two way seal under the eccentric ball valve high pressure, simple structure, and different materials of disk seat back elastic component optional satisfy different temperature and pressure differential requirements.
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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (5)
1. A bi-directionally sealable eccentric ball valve comprising: valve body (1), pressure disk (2), disk seat (3), elastic component (4), sealing member (5), ball core (6), valve rod (7), O type circle (8), its characterized in that: the horizontal direction of the valve body (1) is a cavity structure, the external section radius of the cavity structure of the valve body (1) is 5-20 cm, the pressure plate (2) is a hollow frame structure with a rectangular cross section, the upper end and the lower end of the pressure plate (2) are respectively fixedly connected to the valve body (1), the valve seat (3) is positioned between the pressure plate (2) and the ball core (6), the elastic piece (4) is fixedly connected between the pressure plate (2) and the valve seat (3), the upper end part of the pressure plate (2), the upper end part of the valve seat (3) and the elastic piece (4) form a sealing piece (5), the lower end part of the pressure plate (2), the lower end part of the valve seat (3) and the elastic piece (4) form the sealing piece (5), the ball core (6) is of a hollow hemispherical three-dimensional structure, the internal diameter of the ball core is 5-20 cm, and the external diameter of the ball core is 8-25 cm, the included angle between the valve rod (7) and the cavity structure of the valve body (1) is 0-90 degrees, and the valve seat (3) can vertically float relative to the axial direction of the valve rod (7).
2. A bi-directionally sealable eccentric ball valve according to claim 1, wherein: the ball core (6) is rotatably connected with the valve rod (7), the angle of the ball core (6) rotating around the valve rod (7) is 0-90 degrees, a rotatable rotating structure is arranged on the part, in contact with the valve rod (7), of the outer surface of the ball core (6), a groove matched with the rotating structure is formed in the surface of the valve rod (7), the rotating structure is embedded in the groove and can rotate relative to the groove, the rotating angle of the rotating structure is 0-90 degrees, the sealing element (5) comprises an O-shaped ring (8), and the O-shaped ring (8) is located on the outer surface of the valve seat (3).
3. A bi-directionally sealable eccentric ball valve according to claim 1, wherein: the upper end of the valve rod (7) is connected with a driving part arranged outside the valve body (1), and the driving part can drive the ball core (6) to rotate in the cavity.
4. A bi-directionally sealable eccentric ball valve according to claim 1, wherein: the outer surface of the valve rod (7) is provided with a cavity structure with a U-shaped cross section, the cavity structure is fixedly connected to the outer surface of the valve rod (7), and a gap is reserved between the valve seat (3) and the cavity structure and is 0-20 mm in size.
5. A bi-directionally sealable eccentric ball valve according to claim 1, wherein: the O-shaped ring (8) is made of elastic rubber materials, and the valve rod (7) and the ball core (6) are made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120615135.4U CN214743470U (en) | 2021-03-26 | 2021-03-26 | Eccentric ball valve capable of being sealed in two directions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120615135.4U CN214743470U (en) | 2021-03-26 | 2021-03-26 | Eccentric ball valve capable of being sealed in two directions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214743470U true CN214743470U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120615135.4U Active CN214743470U (en) | 2021-03-26 | 2021-03-26 | Eccentric ball valve capable of being sealed in two directions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214743470U (en) |
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2021
- 2021-03-26 CN CN202120615135.4U patent/CN214743470U/en active Active
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