Double-eccentric butterfly valve
A double eccentric, butterfly valve technology, applied in the direction of valve lift, valve details, valve device, etc., can solve the problems of high temperature resistance, reduced sealing performance, and reduced service life of the sealed valve seat, so as to improve the service life, improve the sealing performance and improve the effect Effect
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[0018] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0019] Double eccentric butterfly valve, such as Figure 1-Figure 5 As shown, it includes a valve body 9, which is provided with a transverse channel, and the middle part of the valve body 9 is provided with a shaft 1 from top to bottom, and the shaft 1 is provided with a disc plate 19, and the disc plate 19 Located in the channel, the shaft 1 drives the disc 19 to rotate to control the opening and closing of the channel. The valve body 9 on one side of the channel is provided with a sealing surface 18, and the inner edge of the sealing surface 18 is provided with a first-level annular step 23, and the step 23 is provided with a There is an annular first sealing ring 20, the middle part of the first sealing ring 20 is provided with an annular firs...
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