The scraper arm of this design is actually a cantilever […]
The scraper arm of this design is actually a cantilever beam pulled by a diagonal tie rod. The rigidity of the diagonal pull rod is very limited. Once the working condition fluctuates or the slag discharge is not timely, the sediment at the bottom of the Thickening Tank will accumulate, so that the scraper is very difficult to scrape, causing upturning. If the lifting is not lifted due to rust, the slag deposition at the bottom of the thickening tank will become hard slag, causing bending and deformation of the scraping arm. In order to avoid this phenomenon, it is necessary to stop the gutter regularly and clear the sediment at the bottom of the trough, thus increasing the number of gutters.
The sealing of the tailings thickener adopts the wooden board to cover the overflow trough, and the sealing performance is poor, which causes the temperature difference inside and outside the trough to be large, and fog is generated, especially in the spring and winter seasons, sometimes the visibility is less than 1 m, and the equipment is very corroded. Serious, resulting in the service life of the transmission worm box is only half a year, the stroke collision switch system is often rusted, can not be alarmed in time to stop, resulting in the limit box burst.
The earliest thickeners did not have an automatic control system and were usually manually controlled. When the slag is manually shut off, it is difficult to grasp the amount of slag discharged each time. Moreover, it is difficult to ensure the underflow density. If the discharge is excessive, the underflow density will be too low, which will affect the slurry filtration and reduce the supernatant production. If the amount of emissions is too small, the low slag discharge will not come out, causing the thick machine to be overloaded, which may easily cause equipment failure.