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The frozen sample in the grinding tube is collided with the grinding ball model, and the resulting shear and impact forces completely break the tissue. The use of food grinder in pesticide residue detection is mainly used in the pretreatment of pesticide residue detection samples, that is, as a tool for sample grinding. In pesticide residue detection, it is often used in the step of sample crushing. , the sample to be tested is simply chopped and weighed. Using the food grinder to pulverize the samples to be tested can effectively improve the pulverization speed and ensure the pulverization effect, thereby greatly shortening the period and time of pesticide residue detection. In the equipment, the two impellers turn in opposite directions and the speed is high, which causes the flow field between the impellers to be chaotic. Coupled with the interference of continuous feeding, the flow field in the crushing chamber is turbulent, and the particles are in the turbulent flow field, increasing their collision probability. The number of times, and the reverse rotation of the impeller makes the particles move with each other and increase the speed of mutual collision, which are favorable conditions for the ultra-fine material.

The surface of the workpiece becomes very flat and smooth, and the workpiece does not need strong clamps, vacuums, or magnets, but is naturally placed on the grinding disc. The flexible clamping and rigid grinding of general grinding machines reduce the secondary deformation caused by impact and heat, and are more conducive to high-precision and high-finish processing. Through a time relay and a grinding counter, the grinding time and the number of grinding circles can be accurately set and controlled according to the processing requirements. When the food grinder is working, the pressure mode can be adjusted, and when the set grinding time or lap speed is reached, it will automatically stop and alarm, realizing semi-automatic operation. Through the upper and lower grinding discs, the sun gear, and the planetary gear during processing, the grinding motions in four directions and speeds are coordinated with each other, so as to achieve high-efficiency operation of grinding the upper and lower surfaces at the same time.