Feeding method and precautions for coarse crusher

The size of the feed hopper of a large crusher should be determined according to factors such as the unloading method, the amount of unloading each time, and the interval between unloading. The effective volume storage of the feed hopper can generally be considered to be 100~200t. A heavy plate feeder is generally used at the bottom of the feed hopper to feed the large crusher; small and medium-sized coarse crushers can also be fed with medium-sized plate feeders or large electromagnetic vibrating feeders. The width of the feeder should not be less than twice the maximum feed particle size of the crusher.

The feed particle size of large crushers is relatively large. In order to prevent large pieces of material from damaging the feed hopper during unloading, steel rails or thick steel plates are laid on the rear wall and both sides of the feed hopper, as well as at the discharge port. The feed hopper needs to have a suitable shape and size to prevent the material blocks from clogging or jamming in the hopper.

Taking the coarse crushing cone crusher as an example, in order to ensure the normal operation of the equipment and improve the equipment life, the coarse crushing cone crusher should pay attention to the following matters when working:

(1) Before starting, check the lubrication system, the crushing area of ​​the cone, adjust the tension of the belt, and tighten all the screws.

(2) After starting the oil pump motor for 5-10 minutes, check the working condition of the lubrication system. Only when it works normally can the main motor be started.

(3) The crusher can only start feeding after running at no load for 1-2 minutes. Since the gyratory crusher is full of ore, it is necessary to pay attention to whether the ore feeding is normal, especially the ore with high mud content and high water content, to prevent the ore from blocking the feed port. During operation, it is also necessary to check the ore discharge condition, and ore is not allowed to accumulate in the space under the sealing device.

(4) When parking normally, the ore feeding should be s*ped *, and the main motor can be s*ped only after all the ore in the crusher is discharged.

S* the oil pump motor. After s*ping the crusher, all parts of the crusher should be fully inspected and any problems found should be dealt with in a timely manner. The feeding equipment of the coarse crusher should try to use a plate feeder with variable frequency speed regulation, which can adjust the feeding amount of the crusher at any time according to needs; when using a plate feeder for feeding, there should always be some material in the feeding bin to avoid large pieces of material directly hitting the chain plate and causing equipment damage.