Heavy duty apron feeder for sale (hereinafter referred to as the feeder) large volume, up to 16000tph, can adapt to large material particle size, wet, hot and other conditions, and can tilt 25 large angle transportation, but its high cost, large power, complex structure. The bin of the feeder is used to store the material, and the volume of the bin can be used to balance the uneven discharge of the upper feeding equipment, so that the belt conveyor system behind can work continuously. The living volume of the material in the buffer bin is about 2.5 times the volume of the upper unloading equipment. Port and mine bucket capacity is generally about 80~380t. This mass will put a lot of pressure (bin pressure) on the feeder below the silo and will result in an increase in the running power of the feeder. Therefore, the size of the bin outlet is generally reduced and a funnel is installed below the outlet to guide the material and further reduce the pressure of the small bin. The material is transferred through the feeder to the lowest belt conveyor and finally transported away. Due to the friction between the material particles and between the material and the silo wall, the law of pressure distribution inside the liquid is not followed. At the same time, due to the large difference in size and shape between the silo and the funnel, the law of internal pressure distribution is also different.
The internal friction horn is formed in the middle of an already stacked material pile. If you use a small shovel to slowly remove the middle material, the angle of the original material pile is formed at the removed part. The newly formed pile angle is y. Use a piece of material plate as the wall of the bin, put part of the material on it, and slowly lift the plate from one end. When the material starts to slide, the angle of the plate tilting is the external friction angle 8, mg*siny≤nmgcosy can be calculated as tany≤a=tano, that is, y≤. Only when the fluidity of the material is good, a ≤, the external friction angle 8< y,8< < err> the rerest angle y can reach the maximum internal friction angle of the material. This conclusion is based on the premise that the external friction coefficient between the material particles and the horizontal floor is large enough, and the minimum external friction coefficient satisfying this condition is obtained from the reference .
Under some conditions, due to the limitations of equipment and process, it is required that a certain outlet size is very small (such as perpendicular to the direction of the feeder axis), designed into a slender funnel, through this design compared with the square minimum side length and circular diameter, the minimum size of the funnel d is reduced by twice, but the feeder axis direction is at least 3 times perpendicular to the direction of the feeder axis in order to effectively avoid arching. This kind of hopper material flow is more special, only in the front or back of the hopper part of the blanking. Even if d can be small, it must be 6 times the size of the largest material particle.
Because the apron feeder for sale is very short, the proportion of resistance caused by the hopper part is very large, the designer must understand the material p, 9, 6 and other parameters, in the shape of the bucket, the height of the bucket, the size of the bucket mouth and other aspects to do many considerations, accurate calculation of the material pressure, in order to greatly reduce the feeder resistance, reduce the cost of the feeder, to prevent design errors
