The utility model discloses a shake soon and sieve sealing connecting structure of reel and rack, U -type sealing ring was established to the cover rack are fixed in that the transmitted beam ring lock is tight between reel turn -ups and time reel turn -ups, U -type sealing ring's both sides are equipped with the arc boss respectively, go up the reel turn -ups and are equipped with the protruding muscle of arc that matches with U -type sealing ring arc boss respectively on the reel turn -ups down, and the protruding muscle of reel arc compressed tightly the cooperation under the protruding muscle of the last reel arc of shu huanyu reached. The utility model discloses simple structure, convenient to use guarantees screen(ing) machine material in the use and does not reveal that the framework is indeformable, it is firm to restraint the ring.