Fixing Method Of Grinding Mill Grinding Roller

Fixing Method Of Grinding Mill Grinding Roller

Summary of contents: In the common method of fixing the grinding roller of the grinding mill, the quick roller is usually set to be fixed, and the slow roller is set to be movable, that is, the bearing seat of the fast roller is fixed relative to the body, and the grinding roller is ground. The wearing parts of the powder machine often need to be disassembled, and the surface of the roller is subjected to refining treatment such as polishing, drawing and sand blasting. At the same time, the roller is a part requiring high rotation precision in the grinding mill, so the roller is fixed to the milling method. The performance of the machine is crucial.

In the common grinding roller fixing method of the grinding mill, the quick roller is usually set to be fixed, and the slow roller is set to be movable, that is, the bearing seat of the fast roller is fixed relative to the body, and the grinding roller is a grinding machine. Consumable parts often need to be disassembled to repair the surface of the roller, such as buffing, drawing, sand blasting, etc. At the same time, the roller is a part of the grinding mill that requires high rotation precision, so the roller fixing method works on the grinding machine. Performance is critical. At present, there are three commonly used fixing methods for the mill:

1. The interference fit between the bearing and the grinding roller shaft is used; 2. The locating sleeve is tensioned between the bearing and the grinding roller shaft to form a detachable connection; 3. The bearing is used at the bearing on the grinding roller shaft. The tapered face forms a detachable fit with the same tapered bearing. First of all, the typical grinding machine with fixed type of fixing has MQ medium-sized series grinding machine. This grinding grinding machine directly matches the bearing with the grinding roller shaft, and does not adopt the structural transition such as the tightening sleeve to ensure the reliability of the grinding roller shaft. Positioning, and the radial runout of the grinding roller shaft itself is only affected by the precision of the grinding roller itself, which can guarantee high rotation precision under ordinary machining manufacturing precision, but it is difficult to disassemble; secondly, the tightening sleeve is used for the grinding roller. The shaft and the bearing are connected.

The typical grinding mill of this type of fixing is the mill. The advantage is that the position of the adapter sleeve relative to the grinding roller shaft can be adjusted, and the axial dimension of the grinding roller shaft is processed. The error requirement is looser, and the sealing of the two ends of the grinding roller relative to the wall plate can be ensured, and the chance of material leakage is reduced. The disadvantage is that the machining precision is relatively low, and the tight clamping of the clamping set will cause the grinding roller to be displaced relative to the bearing and disassembled. It is more difficult to install; again, the taper roller shaft and the bearing are connected. The typical grinding mill of this type is a mill. The advantage is that the two cones are directly matched without adding any The crossing element ensures accurate and reliable positioning of the grinding roller, and the radial runout of the grinding roller itself only depends on its own machining precision. When disassembling, only special hydraulic tools are needed, and the cone between the bearing and the grinding roller The surface forms a grinding oil film, which can be smoothly disassembled. The disadvantage is that the processing precision of the parts is high and the processing is difficult.

In the current grinding mill, the fixing method using the adapter sleeve has been less and less, and the fixing method using the interference fit is mostly used in the small-sized, single-grain mill, and the cone is used for the large and medium-sized mill. The joint structure of the surface is better.

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