Sand prevention device for unmanned aerial vehicle

The invention discloses a sand prevention device for an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicle accessories, the sand prevention device comprises a shell, the shell comprises an air inlet panel, an air outlet panel parallel to the air inlet panel and an air guide ring plate, a separation bin is arranged between the air inlet panel and the air outlet panel, the air inlet panel is arranged above the air outlet panel, and the air guide ring plate is arranged at the bottom of the air outlet panel; the two sides of the air inlet panel and the two sides of the air outlet panel are each provided with a plurality of sand outlet pipes communicating with the separation bin. A plurality of first air holes are formed in the air inlet panel, and a plurality of second air holes are formed in the air outlet panel; a sand-dust separation assembly and a sand outlet assembly are arranged on the shell; when air enters the shell from the first air hole, sand and dust from the first