Cooling structure of rice polisher for detection

The utility model relates to a cooling structure of a rice polisher for detection. Transverse passages and longitudinal passages which are connected with one another are formed inside a weight, the ports of the longitudinal passages are closed, two ports of the transverse passages are open, and the rest of the ports of the transverse passages are closed, so that a water circulation passage is formed inside the weight, and the transverse passages are communicated with a water outlet of a high bucket and a water inlet of a low bucket through a connector and a hose respectively. Water cooling is conducted on the weight through water circulation, and the weight is at a lower temperature when the rice polisher is working, so that the accuracy of the detection result is guaranteed.