A long-life & reliable connecting rod type shut-off butterfly valve is a kind of high temperature gas shut-off valve with long life

reliable

safe and efficient features.It is applied wider and gradually replaces the heavy gate valve as shut-off valve in gas pipeline

air pipeline or flue gas pipeline in blast furnace iron-making process.The new design concept and the structure optimization design scheme of the long-life and reliable connecting rod type shut-off butterfly valve are introduced.The trajectory of the four bar linkage mechanism is analyzed

the sealing compensation mechanism is presented

the sealing design and material selection are optimized

and the experiment of the valve life and its results are also described in detail.The experiment results provide the data support for studying the working condition

the actual performance and other aspects of the long-life & reliable connecting rod type shut-off butterfly valve

the basis for the valve structure optimization design

also verify the wear result between the nano-materials composite electroplating self lubrication bearing and ordinary copper base self lubrication bearing.