Novel sand-prevention fracturing valve

The utility model discloses a novel sand prevention fracturing valve which comprises a valve body, a flow channel and a valve channel, a valve plate is arranged at the intersection of the flow channel and the valve channel, a split type valve seat is arranged in a gap among the flow channel, the valve channel and the inner wall of the valve body, the inner wall of the valve body is connected with the split type valve seat through a miniature notch, and the miniature notch is arranged on the inner wall of the valve body. A valve plate positioning mechanism is arranged between the valve body and the valve plate, and two first sealing rings are arranged between the split type valve seat and the inner wall of the valve body. The sand inlet amount of the valve cavity can be greatly reduced, sand discharging and cleaning can be easily achieved on line when the valve is closed, fracturing is not affected, the innovative double-layer telescopic movable valve seat design is adopted, medium pressure is effectively used