Retractable slip casting plate valve

The utility model provides a retractable slip casting plate valve, package rubbing board valve body, plate valve body include the flashboard, the flashboard card between upper and lower two panels, the both sides of flashboard are equipped with the backing plate, the backing plate card is between upper and lower two panels, two upper and lower panels and backing plate are connected as an organic wholely, all are equipped with the valve opening on two upper and lower panels and the flashboard, the valve opening department of top panel is equipped with the top connection, the top connection withconnect the cutting ferrule and coordinate, the valve opening department of lower panel is equipped with the lower clutch. The utility model discloses an advantage: before the shield constructed quick -witted slip casting operation, mortar tank passed through the staple bolt with the grouting pump and is connected with retractable slip casting plate valve, because machining error or deformation cause when changing with t