The invention discloses an intermittent drive non-abrasion hard sealed
butterfly valve. The intermittent drive non-abrasion hard sealed
butterfly valve is characterized in that the
butterfly valve comprises a valve body, a movable
valve seat, a valve rod, a lower valve rod sleeve, an upper valve rod sleeve, a butterfly plate and an intermittent driving device; the left side and the right side of the valve body are provided with flanges perpendicular to the axis of the valve body; the flanges are used for connecting the butterfly valve with a pipeline
flange; the upper end and the lower end of the valve body are provided with an upper valve rod sleeve hole and a lower valve rod sleeve hole; a cavity of the valve body is a stepped hole; the upper valve rod sleeve and the lower valve rod sleeve penetrate into the valve body through the upper valve rod sleeve hole and the lower valve rod sleeve hole correspondingly;
retainer cups are arranged between the upper valve rod sleeve and the valve body as well as between the lower valve rod sleeve and the valve body; the
retainer cups are connected with the valve body through bolts, and adjusting gaskets are installed between the
retainer cups and the valve body; both the upper end and the lower end of the same
busbar of the upper valve rod sleeve are provided with flat key grooves, in addition, an upper
cam is fixedly installed at the lower end of the upper valve rod sleeve through a flat key, and the upper end of the upper valve rod sleeve is connected with the intermittent driving device; the upper end of the lower valve rod sleeve is provided with a flat key groove, and a lower
cam is fixedly installed at the upper end of the lower valve rod sleeve through a flat key; and a transferring shaft is installed between the upper
cam and the lower cam.