JHA cement silo job hazard analysis

Fault 1 of the cement silo: the cement cannot be loaded;

Causes:

1. The feeding cone valve cannot be opened;
2. The positive pressure state is displayed in the warehouse, and the cement will not be loaded in;
3. The exhaust valve of the delivery bin leaks air;

Solution:

1. First check whether the cylinder piston and connecting rod are in motion, and whether the motion is in place; if there is no motion or the motion is not in place, it may be that the air supply switch of the cylinder is leaking or blocked. At this time, clean up the sundries in the switch valve and seal it;
2. Timely check whether the rubber of the exhaust valve tray is blown through, and replace the blown rubber in time;
3. Open the exhaust tray to discharge the residual device in the cement silo;

Fault 2 of the cement silo: the cement in the cement silo cannot be sent out;

Causes:

1. There is sediment in the pipeline of the cement silo, which will block the pipeline;

Solution:

1. 1. Clean the pipes of the cement silo frequently to keep them clean;

Fault 3 of the cement silo: During the process of feeding the powder into the cement silo, powder emerges from the top of the cement silo;

Causes:

1. The filter element of the dust collector is clogged;
2. The material level gauge fails;

Solution:

1. Clean the filter element of the dust collector, if the filter element is damaged, replace it with a new one;
2. Replace the material level gauge with a new one. At this time, check the reliability of the full alarm device of the material level gauge;

Fault 4 of cement silo: slow feeding of screw conveyor;

Causes:

1. The screw conveyor is damaged;
2. The feeding of the powder tank is not smooth;

Solution:

1. Check whether the blade of the screw conveyor is deformed, if it is deformed, remove the corrected blade or replace it with a new blade;
2. Check the material level tank, if the material level tank is blocked, clean the material level tank.