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1. Milling machine structure principle rice mill by the shell, drum (roller above the screw rack), rice knife, processing bucket, rice sieve and other components. At work, the rice is poured into the hopper to open the inlet knife, and the rice flows into the space of the white room and the drum. Due to the rotation of the drum, rice was subjected to a great deal of squeezing force and friction, which caused the hulls to fall off and the hulls to be finely ground and the rice grains to be whitened. Under the effect of the continuous rotation of the drum, the rice grain is pushed to the outlet through the screw rack on the drum and flows out from the outlet blade. Gu Di leaked from the rice sieve into the bottom of the casing.
2. Adjustment method The rice milling machine should make two major adjustments in the work. One is the adjustment of the position of the rice knife, and the other is the adjustment of the inlet and outlet blades.
The adjustment of the rice knife is mainly to adjust the gap between the rice knife and the drum. If the gap is large, the pressure in the whitening chamber is small, and the friction force of the rice in the drum is not strong, so the rice cannot be finished but the rice output rate is high. When the inlet knife is opened and the outlet knife is closed, the grain in the whitening chamber increases, the pressure increases, and the milled beige is white, but the broken rice is more; on the contrary, when the inlet knife is closed and the outlet knife is opened, The rolling room is kept with less rice and the pressure is reduced. The milled rice is rougher.
According to the requirements of whitening room pressure and friction, to grind out the whole grain, white color and good quality rice, the gap between the rice knife and the drum and the opening and closing degree of the inlet and outlet blades should be adjusted according to the following methods.
(1) The gap between the rice knife and the drum should be appropriate. The gap can not be smaller than the transverse diameter of the rice, otherwise, the rice is easy to break; the gap can not be larger than the longitudinal diameter of the rice, otherwise, the milled rice grain is rough. The knife gap should be selected between the vertical and horizontal diameters of the rice grain. The knives clearance should be slightly beveled, ie, the gap near the end of the exit knife should be slightly larger, so that the milled rice is more complete.
(2) The inlet and outlet blades must be well coordinated. In general, the opening degree of the inlet knife can be controlled to be 1/2 of the entire opening and not more than 2/3 at most. Some old operators removed the imported razor and made all imports open. This is not appropriate. Because all the grains are opened, there are too many grains, the pressure in the whitening room is too high, and the rotation resistance is increased. If the outlet blade cannot cooperate for a moment, the belt will slip, and even the machine will jam or be damaged. The exit knife must be controlled flexibly. During operation, the opening of the rice knife gap and the entrance knife should be adjusted as required, and then fixed. When the operator only operates the outlet knife with his right hand, the left hand sticks out the lower end of the outlet and connects the nanoparticles. Check whether the rice is complete and whether the beige is white and clean. If the broken rice is more, you can open a large exit knife; if the grain of rice is rough, you can close the small exit knife. Both should be taken into consideration until the quality of the rice is up to the required level.
In order to ensure the normal operation of rice mills and prolong the service life of the rice mills, the following items must be noted:
(1) It is necessary to pay attention to check whether there are nails, stones and other debris in the rice to prevent such debris from entering the white room and causing it to clog or destroy the rice sieve.
(2)Before starting the machine, check whether the rice sieve, rice knife, drum core, rice cover, etc. are intact and installed, and whether the bolts or nuts are tightened or not, and whether there is any oil on the bearings.
(3) Rotate the spindle (drum) before starting to check for jams.
(4) When the machine is turned on, run the empty load to the normal speed, then pour the grain into the machine, and always pay attention to the operation of the rice mill.
(5) After the machine is shut down, it should be cleaned and kept clean to prevent rats from crawling into the machine. It is best to cover the body with plastic or cloth.
Improve Rice Milling Quality Technology
Farmers like rice mills to produce complete, white rice. However, some rice milled out of the rice mill is broken more often, and the beige color is not white. The reason is that in addition to the quality of the rice itself (such as millet being flooded during harvesting, and not dried after harvesting), rice milling machines are mainly used. The inlet and outlet blades and rice knives were not properly deployed and the operators could not skillfully operate the rice mill.