The inspection and maintenance of the screw conveyor - 2020
06 -
19 Wang Zhanguang (
Jiaozuo strong cement)
Screw conveyor and reamer, in the industry, general conveying equipment is cement and cement raw materials.
A, the function of the screw conveyor screw conveyor with its unique structural characteristics, have multiple function, first delivery, and the other is to lock the wind, can also be used as a measurement.
The delivery method is with spiral blade rotation moves material, lock the wind mainly relies on a smaller gap between blade and shell and varying pitch production material dense or material accumulation, such as sealing reamer and screw pump;
Measurement is done by the combination of weighing and rotational speed, such as single pipe metrology reamer, etc.
Second, the structure of the screw conveyor spiral reamer, simple structure, reliable operation, widely used in various industries, mainly composed of shell, screw blade, reamer shaft, intermediate support hanger, end bearing body and support, coupling and reduction of mechanical and electrical machine, in and out of the mouth.
Three the checking contents of screw conveyor, screw conveyor, although simple, but necessary, inspection content mainly includes the following several aspects.
1.
Shell check check, first to see if shell cover with dislocation and ash leakage, wear out, if there is a shell, shell polishing shell etc. Bad phenomenon.
2.
Check reducer lubrication and deceleration motor and lubricating oil whether appropriate, check whether the hanger oil cup is short of oil.
3.
Transmission check check including reducer, motor, coupling.
Main check reducer, motor, coupling of anchor bolt is loose, reducer, motor temperature and vibration is normal, whether there are abnormal noise, lubrication are in good condition, etc.
4.
Support device check supporting device refers to between two main bearing and hanger before and after.
Check main bearing rock, temperature, lubrication condition and so on.
Four, screw conveyor maintenance maintenance is mainly to deal with problems found during the inspection or need to maintain the equipment on a regular basis, it comes down from several aspects.
1.
Set of devices for regular quantitative, targeted, epicuticular equipment lubrication.
2.
When found chassis shake, may be the anchor bolt looseness, hanger bolt looseness, hanger bearing damage, etc. , to cope with anchor bolt fastening, hanger, fixed, and if the hanger or on both ends of the main bearing damage, should be replaced in a timely manner or planned downtime.
It is also possible that between blade and shell card has large or foreign body, should stop to clean up.
3.
Chassis thrum friction may be the middle hanger bearing damage, loose leaf sinking or hanger, friction, and shell should be replaced downtime bearings or fastening pylon;
If there is foreign body between the between blade and shell, downtime clean can.
If the noise is issued shall be in the bearing is bearing into ash or without oil, should be cleaning refueling.
4.
Screw conveyor running grey or grey leakage when found at grey, should be the untight seal or the body negative pressure caused by insufficient, seal processing should take ash characteristics, conditions of dust collecting pipe valves, and increase the pumping air volume.
If the body leak ash, should wear out parts of the bare, check whether the discharge channel is unimpeded, prevent shell in the aggregate, cause spillover, check whether the material is too much, is beyond the reamer design ability, if a dredge adjustment in a timely manner.
At the same time to check if motor phase running, etc.
5.
Cross coupling fracture cross coupling rupture caused by bouncing neck, overload, should avoid machine cavity into the foreign body, replace the removal should be, find is Ann specification.
6.
Transmission failure if reducer with abnormal noise, temperature is too high, generally is caused internal damage of bearing and gear failure, should be replaced open check, repair, and ensure the normal lubrication, and if the oil spill, deal with seal check processing, keep the vents open.
If discover motor noise, low speed, is commonly caused by lack of phase or overload, should be timely find out the reason, for repair processing.
If the transmission of vibration, noise is normal, to check if the anchor is loose.
7.
Other in addition to the normal maintenance, maintenance, and ensure that the cement clean sanitation, unstable content of rotational parts may not exist, observe whether current, observation equipment load case, etc.
Conclusion, due to the limited level of the author, the conclusion is not comprehensive, or there is an error, hope readers to comment.
Thank you very much!
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Source: wisdom cement)
