CN208041206U - A kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion - Google Patents
A kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion Download PDFInfo
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- CN208041206U CN208041206U CN201820370272.4U CN201820370272U CN208041206U CN 208041206 U CN208041206 U CN 208041206U CN 201820370272 U CN201820370272 U CN 201820370272U CN 208041206 U CN208041206 U CN 208041206U
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- sphere
- valve seat
- valve
- valve body
- drive plate
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Abstract
The utility model discloses a kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion,Including valve body,Sphere,Valve seat and drive plate,Valve body middle chamber has installing port,Sphere lower end is fixedly connected by circular shaft and valve body,The inlet and outlet of valve body are respectively equipped with floating type valve seat,Valve seat is provided to be formed between pretightning force and sphere by spring and be sealed,Sphere upper and lower end face is machined with square shaft,It is machined with square groove on two drive plates,Cooperation is formed between axis hole,And it is fixed on sphere by screw,It is discoid to be driven dish structure,And it is cut at both ends,Disk sideline whole rounding,And fall orthodrome in straight line portion and circular arc sideline intersection,Two drive plates are respectively arranged on two end faces of sphere or more,By sphere installation when in valve body,The side plane of drive plate can face valve seat on sphere closed position.The application drive plate and valve base chamber contact area are small, and frictional force is small, protect the not damaged raising service life of sealing pair.
Description
Technical field
The utility model is related to a kind of valve seat detaching structures.
Background technology
The current existing fixed metal seal ball valve of major part, in opening-closing process, sphere begins valve with sealing surface of seat
It contacts with each other eventually, the keying frictional force of sealing pair is big, and big, poor sealing performance is worn to sealing pair.
Invention content
The utility model mainly solving the technical problems that the sealing pair of existing metal seal ball valve keying frictional force
Greatly, big, poor sealing performance is worn to sealing pair.
To solve the above problems, the utility model provides a kind of metal sealing fixing ball valve sealing pair without relative motion
Valve seat detaching structure, including valve body, sphere, valve seat and drive plate, valve body middle chamber have installing port, sphere lower end by circular shaft with
Valve body is fixedly connected, and the inlet and outlet of valve body are respectively equipped with floating type valve seat, and valve seat provides pretightning force and sphere by spring
Between formed sealing, sphere upper and lower end face is machined with square shaft, square groove is machined on two drive plates, is formed between axis hole
Cooperation, and be fixed on sphere, transmission dish structure is discoid, and is cut at both ends, disk sideline whole rounding, and
Fall orthodrome for straight line portion and circular arc sideline intersection, and two drive plates are respectively arranged on two end faces of sphere or more, by ball
When body is installed in valve body, the side plane of drive plate can face valve seat on sphere closed position.When valve opening, sphere band
Nutating disk rotates together, and drive plate ejects valve seat by side plane moving pivot face, drive plate by arc surface, and such valve exists
In opening process, frictionless motion will be formed between valve seat and sphere.
Two drive plates are fixed on by screw on sphere.
The valve of valve seat detaching structure of the metal sealing fixing ball valve sealing pair of the utility model without relative motion is opening
During closing, since drive plate has ejected valve seat, sphere and valve seat will form frictionless motion, be worn between sealing surface
Few, sealing performance is reliable, especially suitable for high temperature and high pressure steam operating mode.Drive plate and valve base chamber contact area are small, and frictional force is small,
Therefore operation torque of the valve in opening-closing process can be reduced, and protects the not damaged raising service life of sealing pair.
Description of the drawings
Fig. 1 is the structural schematic diagram of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion.
Fig. 2 is drive plate structural schematic diagram.
1 it is sphere in Fig. 1,2 be drive plate, 3 be valve seat, 4 is valve body.
Specific implementation mode
Fig. 1 shows the embodiment of the utility model, and a kind of metal sealing fixing ball valve sealing pair is without relative motion
Valve seat detaching structure, including valve body, sphere, valve seat and drive plate, valve body middle chamber have installing port, sphere lower end by circular shaft with
Valve body is fixedly connected, and the inlet and outlet of valve body are respectively equipped with floating type valve seat, and valve seat provides pretightning force and sphere by spring
Between formed sealing, sphere upper and lower end face is machined with square shaft, square groove is machined on two drive plates, is formed between axis hole
Cooperation, and be fixed on sphere by screw, transmission dish structure is discoid, and is cut at both ends, and disk sideline is whole
Rounding, and fall orthodrome in straight line portion and circular arc sideline intersection, two drive plates are respectively arranged in sphere two ends up and down
On face, by sphere installation when in valve body, the side plane of drive plate can face valve seat on sphere closed position.Work as valve opening
When, sphere band nutating disk rotates together, and drive plate ejects valve seat by side plane moving pivot face, drive plate by arc surface,
Valve in this way will form frictionless motion in opening process between valve seat and sphere.
Claims (2)
1. a kind of valve seat detaching structure of metal sealing fixing ball valve sealing pair without relative motion, including valve body, sphere, valve seat,
It is characterized in that：There is valve body middle chamber installing port, sphere lower end to be fixedly connected by circular shaft and valve body, the inlet and outlet of valve body
It is respectively equipped with floating type valve seat, valve seat is provided to be formed between pretightning force and sphere by spring and be sealed, and sphere upper and lower end face is machined with
Square shaft is machined with square groove on two drive plates, forms cooperation between axis hole, and be fixed on sphere, drive plate knot
Structure is discoid, and is cut at both ends, disk sideline whole rounding, and big in straight line portion and circular arc sideline intersection
Circular arc, two drive plates are respectively arranged on two end faces of sphere or more, and by sphere installation when in valve body, the side of drive plate is flat
It face can face valve seat on sphere closed position.
2. valve seat detaching structure of the metal sealing fixing ball valve sealing pair according to claim 1 without relative motion, special
Sign is：Two drive plates are fixed on by screw on sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820370272.4U CN208041206U (en) | 2018-03-19 | 2018-03-19 | A kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820370272.4U CN208041206U (en) | 2018-03-19 | 2018-03-19 | A kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208041206U true CN208041206U (en) | 2018-11-02 |
Family
ID=63947297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820370272.4U Active CN208041206U (en) | 2018-03-19 | 2018-03-19 | A kind of valve seat detaching structure of the metal sealing fixing ball valve sealing pair without relative motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208041206U (en) |
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2018
- 2018-03-19 CN CN201820370272.4U patent/CN208041206U/en active Active
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