Butterfly-type pneumatic program control valve body
A pneumatic program control and valve body technology, which is applied in the field of program control valves, can solve the problems of operation requirements and high performance, and achieve the effects of good wear resistance, good flow control characteristics and high precision
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[0016] The present invention will be further described below in conjunction with the drawings.
[0017] Such as figure 1 As shown, a butterfly type pneumatic program-controlled valve body includes an end cover 1. It is characterized in that the end cover 1 and the connecting ring 2 are connected by hexagon socket head screws 48; the connecting ring 2 connects the end cover 1 and the valve body 12 by screws Connected together; between the shaft sleeve 3 and the fixed shaft 5 is provided with an O-shaped sealing ring 4, the driven shaft 5 is driven by the driving shaft to drive the butterfly valve 13, and there is a V-shaped sealing ring 6 and an O-shaped sealing ring 7. , Plastic oil seal body 8, O-ring seal 9, graphite gasket 10, gasket ring 11 seal, valve body 12 is equipped with butterfly valve 13, the left end is connected to the driving shaft 16 through the key 60 and the nut 14, and the right end is connected in the same way The driven shaft 5; the nut 14 fixes the butterfl...
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