CN215596452U - Combined sealing structure of eccentric half ball valve - Google Patents
Combined sealing structure of eccentric half ball valve Download PDFInfo
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- CN215596452U CN215596452U CN202120867369.8U CN202120867369U CN215596452U CN 215596452 U CN215596452 U CN 215596452U CN 202120867369 U CN202120867369 U CN 202120867369U CN 215596452 U CN215596452 U CN 215596452U
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Abstract
The utility model relates to the technical field of valves, in particular to a combined sealing structure of an eccentric half-ball valve. The utility model provides a combined seal structure of eccentric hemisphere valve, includes spherical crown, ball disk seat, its characterized in that: the spherical crown of the eccentric hemispherical valve is attached to and connected with the spherical valve seat, a groove is formed in the joint of the spherical valve seat and the spherical crown, an O-shaped ring is embedded in the upper portion of the groove, and a polytetrafluoroethylene sealing structure is embedded in the lower portion of the groove. Compare with prior art, provide a combined seal structure of eccentric hemisphere valve, increase the design of slot, utilize O type circle and the double seal of gathering tetrafluoro seal structure in the slot, when water pressure increase, O type circle bears pressure deformation, gathers tetrafluoro seal structure and extrudees outward to the notch, increases contact pressure to increase sealedly certainly.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a combined sealing structure of an eccentric half-ball valve.
Background
The eccentric half ball valve uses the ball crown and the valve seat to form a sealing pair, so as to achieve the opening and closing sealing of the valve. The sealing is divided into elastic sealing and hard sealing, and the elastic sealing is basically in a mode of fixing a rubber ring by a pressing plate, so that the structure is complex; and the mode of directly pressing into the groove is easy to cause the damage of the rubber ring. A new composite rubber soft seal structure has been developed to improve the above-mentioned disadvantages.
Disclosure of Invention
The utility model provides a combined sealing structure of an eccentric half-ball valve, aiming at overcoming the defects of the prior art, the design of a groove is added, double sealing of an O-shaped ring and a polytetrafluoroethylene sealing structure is utilized in the groove, when the water pressure is increased, the O-shaped ring bears pressure deformation, the polytetrafluoroethylene sealing structure extrudes towards the outside of a notch, the contact pressure is increased, and thus the sealing is automatically increased.
In order to realize the purpose, the combined sealing structure of the eccentric half ball valve is designed, which comprises a ball crown and a ball valve seat and is characterized in that: the spherical crown of the eccentric hemispherical valve is attached to and connected with the spherical valve seat, a groove is formed in the joint of the spherical valve seat and the spherical crown, an O-shaped ring is embedded in the upper portion of the groove, and a polytetrafluoroethylene sealing structure is embedded in the lower portion of the groove.
The groove is of an inverted hook-shaped structure, the hook angle of the groove is 60 degrees, the opening width of the groove is 9.2mm, the width of the polytetrafluoroethylene sealing structure placed in the groove is 4mm, the depth of the polytetrafluoroethylene sealing structure placed in the groove is 12mm, and the depth of the O-shaped ring placed in the groove is 5.5 mm.
The spherical crown and the spherical valve seat are respectively connected with the valve body in a sealing way by adopting another O-shaped ring.
The diameter of the O-shaped ring is 7 mm.
Compared with the prior art, the utility model provides the combined sealing structure of the eccentric half ball valve, the design of the groove is added, the double sealing of the O-shaped ring and the polytetrafluoroethylene sealing structure is utilized in the groove, when the water pressure is increased, the O-shaped ring bears the pressure deformation, the polytetrafluoroethylene sealing structure extrudes outwards the notch, the contact pressure is increased, and the sealing is automatically increased.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is an enlarged schematic view of a in fig. 1.
Fig. 3 is a schematic structural view of a ball valve seat.
Fig. 4 is an enlarged schematic view of B in fig. 3.
Referring to fig. 2, fig. 4 shows a spherical crown 1, a spherical valve seat 2, an O-ring 3, a polytetrafluoroethylene sealing structure 4, a valve body 5 and a groove 6.
Detailed Description
The utility model is further illustrated below with reference to the accompanying drawings.
As shown in fig. 1 to 4, a spherical crown 1 of the eccentric hemispherical valve is attached to a spherical valve seat 2, a groove 6 is arranged at the joint of the spherical valve seat 2 and the spherical crown 1, an O-ring 3 is embedded in the upper part of the groove 6, and a polytetrafluoroethylene sealing structure 4 is embedded in the lower part of the groove 6.
The groove 6 is of a barb-shaped structure, the hook angle of the groove 6 is 60 degrees, the opening width of the groove 6 is 9.2mm, the width of the polytetrafluoroethylene sealing structure 4 placed in the groove 6 is 4mm, the depth of the polytetrafluoroethylene sealing structure 4 placed in the groove 6 is 12mm, and the depth of the O-shaped ring 3 placed in the groove 6 is 5.5 mm.
The spherical crown 1 and the spherical valve seat 2 are respectively connected with the valve body 5 in a sealing way by adopting another O-shaped ring 7.
The diameter of the O-ring 3 is 7 mm.
The ball valve seat 2 is provided with a groove 6 with a specific structure, as shown in fig. 4, the depth h of the groove 6 is 5.5mm, the depth h1 is 12mm, the width w is 9.2mm, the width w1 is 4mm, and the angle a is 60 degrees. The size values can be finely adjusted to 0-0.5.
The diameter of the O-shaped ring 3 is 7mm of the standard diameter, so that the O-shaped ring is convenient to customize. The polytetrafluoroethylene sealing structure 4 is simple in structure and convenient for mass production, as shown in fig. 2.
During assembly, the O-shaped ring 3 is firstly installed on the ball valve seat 2, and then the polytetrafluoroethylene sealing structure 4 is inserted into the ball valve seat 2, so that the elastic part combination of the ball valve seat 2 is completed.
The spherical crown 1 rotates to slide in contact with the spherical valve seat 2, the spherical crown touches the O-shaped ring 3 and the polytetrafluoroethylene sealing structure 4, and the O-shaped ring 3 and the polytetrafluoroethylene sealing structure 4 are deformed under stress and are retracted into the groove 6 of the spherical valve seat 2 to form double sealing.
The structure of the utility model is convenient to install, and the O-shaped ring is not damaged; the O-shaped ring does not fall off; the compression amount of the O-shaped ring can be controlled, and the service life is prolonged; the polytetrafluoroethylene sealing structure and the O-shaped ring form double sealing, so that the sealing is more reliable; positive and negative direction water pressure self-increasing sealing: when the water pressure increases, the O-shaped ring bears pressure deformation, the polytetrafluoroethylene sealing structure is increased to extrude outside the notch, the contact pressure is increased, and therefore the sealing is self-increased.
Claims (4)
1. The utility model provides a combined seal structure of eccentric hemisphere valve, includes spherical crown, ball disk seat, its characterized in that: the spherical crown (1) of the eccentric hemispherical valve is attached to a spherical valve seat (2), a groove (6) is arranged at the joint of the spherical valve seat (2) and the spherical crown (1), an O-shaped ring (3) is embedded at the upper part in the groove (6), and a polytetrafluoroethylene sealing structure (4) is embedded at the lower part in the groove (6).
2. The combined sealing structure of the eccentric hemisphere valve according to claim 1, characterized in that: the groove (6) is of a barb-shaped structure, the hook angle of the groove (6) is 60 degrees, the opening width of the groove (6) is 9.2mm, the width of the polytetrafluoroethylene sealing structure (4) placed in the groove (6) is 4mm, the depth of the polytetrafluoroethylene sealing structure (4) placed in the groove (6) is 12mm, and the depth of the O-shaped ring (3) placed in the groove (6) is 5.5 mm.
3. The combined sealing structure of the eccentric hemisphere valve according to claim 1, characterized in that: the spherical crown (1) and the spherical valve seat (2) are respectively connected with the valve body (5) in a sealing way by adopting another O-shaped ring (7).
4. The combined sealing structure of the eccentric hemisphere valve according to claim 1, characterized in that: the diameter of the O-shaped ring (3) is 7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120867369.8U CN215596452U (en) | 2021-04-26 | 2021-04-26 | Combined sealing structure of eccentric half ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120867369.8U CN215596452U (en) | 2021-04-26 | 2021-04-26 | Combined sealing structure of eccentric half ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215596452U true CN215596452U (en) | 2022-01-21 |
Family
ID=79872137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120867369.8U Active CN215596452U (en) | 2021-04-26 | 2021-04-26 | Combined sealing structure of eccentric half ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215596452U (en) |
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2021
- 2021-04-26 CN CN202120867369.8U patent/CN215596452U/en active Active
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