I. Dryer: The dryer is one of the main equipments of the MDF production line. The most worrying user in use is the fire problem. The main cause of fire is that the fiber (dust) is adsorbed on the radiator or the pipe wall, and carbonized after heating for a long time, resulting in a decrease in the ignition point. In addition, the overload or the moisture content of the wood chip is too high, and the inlet temperature of the dryer is increased. At this time, the fiber dust is easily burned after carbonization, so the fibers (dust) accumulated in the radiator radiator and the pipe are thoroughly cleaned. It is difficult to remove the impurities adhering to the pipe wall by the general cleaning method. At this time, the steel brush is used for cleaning. The smoother the wall is, the more often it is cleaned. For those who have just started production, they should pay more attention to the cleaning of the pipeline. In addition to using abnormal downtime, they should be cleaned regularly, and they should be cleaned thoroughly every time. After the radiator and the pipeline are completely cleaned, the inlet temperature of the general dryer can be opened to 175, and it is dangerous to be high. The tail temperature and fiber moisture content should find a certain law, and the moisture content of the fiber should not be lower than 8%.
Second, dry fiber silo: dry fiber silo horizontal spiral bearing load is large, but also in the dust environment, so bearing oil injection is the main problem. Bearing oil injection needs to disassemble the bearing end cover. Don't be afraid of trouble. It is recommended to inject oil once in half a month. Check whether there is dust in the bearing when filling oil. It is necessary to remove the dried grease and dust. It is more likely to cause fire in this position. . In addition, the series of throwing rolls is also a problem that is easy to occur. The axial direction of the throwing roller is fixed by the locking screw on the bearing. Always check whether the locking screw is loose. The more reliable structure is to add washers and washers at the steps of the shaft. It is convenient to process or use two semi-circles and then close the spot welding.
Third, hot press: hot press in addition to the same mechanism cylinders need to be adjusted regularly, but also pay attention to 24 large joint bearings oil injection, the grease is branded EL1 # extreme pressure lithium grease, if the local does not have the same brand, Then buy other grades that require temperature resistance of 160. Special lubrication pumps are required for filling grease. The SJB-V25 and SRB-2.0/3.5-DG pumps produced by Shanghai Lubrication Equipment Factory are combined lubrication pumps. The former has a pressure of 35kg/cm2 and the latter has a pressure of 210 kg/ Cm2, the former supplies oil to the latter and the latter fills the oil into the bearing. It is recommended to add oil once per shift.
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