Maintenance method for coal dust conveying fan of Roots blower in coal mine:

1、 Maintenance Method of Roots Blower in Coal Mine

In the maintenance of Roots blower equipment in coal mine, different maintenance methods should be adopted for different maintenance objects. The common maintenance methods of mechanical equipment include post accident maintenance, preventive maintenance and maintenance prevention.

① Post maintenance of roots blower. Unplanned repair when equipment fails or performance degradation does not meet production requirements.

② Roots blower preventive maintenance. ① Maintenance based on time or workload. Regular repair - repair on schedule according to the specified repair cycle structure, repair interval and repair items, but determine whether to replace new parts according to the wear degree of parts determined during pre inspection and repair. ② Maintenance based on technical status. Improve maintenance - mainly find problems in design and manufacturing from fault analysis, and adopt improvement measures in combination with repair.

③ Maintenance prevention.

When designing new equipment, take countermeasures according to the feedback information from the user department to improve the reliability and maintainability of the new equipment.

2、 Selection principle of maintenance method for roots blower equipment in coal mine

The purpose of selecting different maintenance methods is to improve the availability of equipment and reduce the total maintenance cost of the enterprise. Selection principle:

① All equipment of different types and purposes can be divided into several categories according to their importance according to the role of equipment in production, purchase cost, structural characteristics, failure conditions, standby quantity and other factors. Post maintenance can be used for a class of equipment that is not very important but will not cause production losses due to failure. Different preventive maintenance methods can also be adopted for a class of equipment that implements preventive maintenance according to different situations.

② For equipment of the same type and purpose, various parts have their own life and failure rules, so the maintenance methods can be different.

For random faults without development process (such as spring fracture), such faults are mostly caused by misoperation, sudden overload and other reasons, which cannot be detected in the past, so only after maintenance can be used. Then take countermeasures by improving maintenance or maintenance prevention.  

For regular faults (such as cylinder and gear wear) requiring development process of Roots blower in coal mine, if the condition monitoring method is simple and cost effective, it is better to adopt condition monitoring maintenance; Otherwise, regular repair can be carried out according to the rated life of the parts.

For regular faults without development process, such parts cannot be subject to condition monitoring and maintenance, but they have design life parameters (such as the action times of microswitch). If their use times can be counted, regular repair can be adopted; For parts that have no safety requirements, have little downtime loss and are difficult to count the use times, post maintenance can be used.

There is no obvious limit to the existence of the fault development process. It is related to the actual level of detection technology. Generally speaking, faults that can be observed or can be understood by existing detection methods can be classified as faults with development process; Regular failures often become random failures due to environment, misoperation, improper maintenance, overload, etc.