What to look for when replacing roller skins ?Roll crusher crushes stones and wears out the roll skins as it crushes the material. It is necessary to check the condition of the roll skin regularly during production. Severe wear of the roll skin will affect the crushing capacity and product size, so it is necessary to replace the roll skin.
Here, Huashengming Heavy Industry will explain the correct operation steps for replacing the roll skin of roll crusher:
1. The first step is to disconnect the power supply.
2. After cutting off the power supply, hang the warning sign of ‘under maintenance’ in a conspicuous position.
3. Next you can start to work, first of all, the lubrication pump to decompression processing. Will supply the belt rope switch pull good, clean up the belt head pumice, demolition of lifting down the mouth of the shroud, cauldron, cover plate fixed cone dust cover and other four pieces. During the lifting process, strictly observe the lifting operating procedures.
4. The liner could not be removed and gas welded and cut to clean the inside surface of the frame. The back of the liner was freshly poured concrete in a 1:3 mix of 500-600 cement and sand.
5. After the top liner is installed, install the compression nut and pour the zinc alloy. Before pouring, preheat the cone and the liner at 60～80℃, and plug the gaps at each connection of the liner with asbestos and clay to avoid leakage of zinc alloy, and after pouring the alloy, install the compression nut and the locking plate to make it tight.
6. After the replacement of roller skin is completed, the machine will be run on a trial basis, run empty for a period of time, and start to run in accordance with the normal start-up sequence.
