Improved quartz sand crushing device

The utility model discloses an improved quartz sand crushing device, which relates to the field of quartz sand, and comprises a box body, an observation window and a sealing door are respectively arranged on the outer surface of the box body, a feed port penetrates through one side of the top of the box body, discharge ports penetrate through two sides of the bottom of the box body, a fixed cone is fixed at the upper part in the box body, and a fixed cone is fixed at the lower part of the box body. A material collecting cavity is formed in the top of the fixed cone, a motor is installed in the middle of the bottom of the box, and the output end of the motor is connected with a storage barrel through a rotating shaft. By arranging the sliding sleeve and the anti-blocking rod, in the rotating process of the movable cone, the supporting rod can rotate at the same time so as to drive the sliding sleeve and the anti-blocking rod to rotate, the sliding sleeve and the anti-blocking rod are located over the movable c