Novel sand-proof submersible pump

The utility model relates to the technical field of submersible pump accessory devices, in particular to a novel sand-proof submersible pump which is provided with a sand-proof mechanism with a good sand-proof effect, so that the submersible pump can work normally, and the use efficiency and the effect of the submersible pump are enhanced. Comprising a pump set body, a first connecting plate, a second connecting plate and multiple bolts, the middle of the top end of the first connecting plate is connected with the bottom end of the pump set body, the bottom end of the first connecting plate is fixedly connected with the top end of the second connecting plate through the multiple bolts, and a sand prevention mechanism is arranged in the bottom area of the pump set body; the sand prevention mechanism further comprises a double-layer sand prevention sleeve, a supporting plate, a fixing plate, a sliding plate, a limiting rod, a cleaning sleeve, a first lead screw and a servo motor, a working cavity is formed in t