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Maintenance and repair of screw conveyors

2023-08-25
Spiral conveyors are widely used in various sectors of the national economy, such as the grain industry, building materials industry, chemical industry, mechanical manufacturing industry, transportation industry, etc. Spiral conveyors are mainly used to transport various powder, granular, and small pieces of materials. The loose materials conveyed include grain products such as grains, beans, flour, building materials such as cement, clay, sand, chemicals such as salts, alkalis, fertilizers, and bulk cargo such as coal, coke, and ore. Today we are introducing the maintenance precautions and maintenance standards for screw conveyors.



Precautions for maintenance of screw conveyors



1. The driving device mainly consists of the motor and reducer. For models that require oil injection, it is necessary to strictly and regularly replace them, which is equivalent to the heart of the conveyor. The oil should be selected as antifreeze oil;



2. The shell part of the spiral body. The shell is generally not damaged, but if the material is acidic or alkaline corrosive, attention should be paid to cleaning it during shutdown;



3. The spiral axis of the spiral body part. The spiral shaft is a combination of a spiral core tube and spiral blades, and the spiral blades are also damaged parts. Depending on the abradability of the material, their service life varies. When the gap between the spiral blades and the spiral shell is large, or the blades are deformed, they need to be replaced, otherwise it will affect the material delivery capacity; The spiral core tube mainly focuses on the transmission shaft and connecting shaft connected to it, and regularly injects oil to ensure lubrication; Observing the thickness of the spiral shaft sleeve, it can be observed that the spiral shaft sleeve of the twisted dragon conveyor is prone to friction thinning after prolonged operation, and thinning to a specific extent can affect the concentricity of the spiral shaft. Spare parts should be retained and replaced in a timely manner;



4. The main observation of the inlet and outlet of the twisted dragon conveyor is whether the bolts at the flange connection are tight, whether there is rust, and whether they are treated;



5. Inspection of the drive bracket: Since the drive part is connected to other parts by the transmission shaft, it is necessary to regularly check the fastening of the drive bracket to avoid deviation from the spiral body due to the non concentricity of the drive part.
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