1. Réparation et remplacement de l'écran. L'écran est en acier en feuille ou en fer perforé. Lorsque l'écran est usé ou cassé par des corps étrangers, si les dommages ne sont pas importants, il peut être réparé par rivetage ou soudure ; si la zone est endommagée, il faut remplacer l'écran par un neuf. Lors de l'installation de l'écran, le côté burr de l'écran doit être orienté vers l'intérieur, le côté brillant vers l'extérieur, et l'écran et le cadre de l'écran doivent être solidement fixés. Lors de l'installation de l'écran en anneau, le joint de recouvrement doit être orienté dans le sens de rotation pour éviter que le matériau ne reste bloqué au joint.
Second, the lubrication and replacement of the bearings. The moulin à maïs is cleaned after every 300 hours of operation. If the bearing is oil lubricated, it is advisable to fill the bearing housing clearance by 1/3 when adding new oil, and the maximum is not more than 1/2. Just tighten the capped oil cup cover a little before operation. When the moulin à maïs bearing is seriously worn or damaged, it should be replaced in time, and pay attention to strengthen lubrication; if using tapered roller bearing, pay attention to check the axial spacing of the bearing to keep it 0.2-0.4 mm. If there is discomfort, increase it. Reduce the paper pad at the bearing cover to adjust.
Third, the replacement of the claws and hammers. Among the pulverizing parts, the pulverizing claws and the hammer pieces are the wearing parts in the moulin à maïs, and are also the main components affecting the pulverizing quality and productivity. The pulverizing claws and the hammer pieces should be replaced in time after being worn. When the jaw crusher replaces the claws, the disc should be pulled out first. Before pulling out, first open the round nut lock piece on the back of the disc, use a hook wrench to unscrew the round nut, and then pull the disc out with a special puller. In order to ensure the balance of the rotor operation, it is necessary to pay attention to the complete set of replacement when changing the teeth. After the replacement, static balance test should be done to make the moulin à maïs work stable. Be sure to tighten the nut when assembling the jaws, and be careful not to miss the spring washer. The qualified parts should be selected when changing the teeth. The weight difference of the single teeth should be no more than 1.0-1.5 grams.