Ceramic ball valve
A technology of ceramic ball valve and ceramic valve seat, applied in the field of ceramic ball valve, can solve the problems of inability to adjust the structure, short service life and high cost of use, and achieve the effect of prolonging the service life, reducing the contact seam and avoiding corrosion
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[0016] Example 1, a ceramic ball valve, refer to figure 1 , A ceramic ball 15 is installed in the housing 1, and the valve stem 2 is fixedly connected to the ceramic ball 15. The left and right sides of the ceramic ball 15 are respectively provided with a left ceramic valve seat 7 and a right ceramic valve seat 13 in contact with it, The left ceramic valve seat 7 and the right ceramic valve seat 13 are positioned by the metal positioning ring 8. The outer surface of the left ceramic valve seat 7 is in close contact with the inner surface of the housing 1, and the outer surface of the right ceramic valve seat 13 is in contact with the inner surface of the ceramic middle body 14. The side surfaces are in close contact, the other end of the ceramic middle body 14 is in close contact with the inside of the left ceramic valve seat 7, and a disc spring pressure ring 11 is provided between the right side elevation of the right ceramic valve seat 13 and the ceramic flange lining 10 A di...
Example Embodiment
[0017] Example 2, a ceramic ball valve, refer to figure 2 , On the basis of embodiment 1, the inside of the cavity where the valve stem 2 is installed is provided with an anti-corrosion sealing layer 4, which is made of high-performance materials such as PTFE gasket, zirconia ceramics, Haci alloy, etc. In this embodiment, a tetrafluoroethylene gasket is used, and a groove is provided on the upper part of the anti-corrosion sealing layer 4, an O-ring 3 is installed in the groove, and a rubber gasket 6 is provided above the O-ring 3. The plate is divided into a circular ring body and extends into the cavity of the valve stem 2 to press the rubber gasket 6. There is a gap between the horizontal plate and the housing 1 and is connected by bolts. The housing 1 is an integrated structure. Exactly the same.
Example Embodiment
[0018] Example 3, a ceramic ball valve, refer to image 3 , Is on the basis of embodiment 2, the flange lining metal ring 9, the left ceramic valve seat 7, the ceramic middle body 14 is threadedly connected with the inside of the housing 1, the left ceramic valve seat 7, the right ceramic valve seat 13 and the ceramic method The connecting part of the blue lining 10 and the ceramic middle body 14 is provided with a sealing ring 16, and the other parts are exactly the same as the second embodiment.
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