Common Material Discharging Ways of Bucket Elevators

PK Machinery mainly offers bucket elevators with belt type,ring chain type and plate chain type which is mainly suitable for feed mills, flour mills, rice mills, oil, starch factory, grain depot, port terminals and other bulk materials conveying industry.

 

According to different discharging ways, bucket elevators also can be divided into: centrifugal type bucket elevator, gravity type bucket elevator and hybrid type bucket elevator. The introduction is described as follows:

1. Centrifugal type: it is using centrifugal force to throw the material away from discharging outlet which is applicable to the material that is dry with fast lifting speed and small particle.
2. Gravity type: under the effect of gravity, the material will discharge along the bucket back , it is suitable for material which is large and fragile.
3. Hybrid type: centrifugal force and gravity force , which is suitable for material with poor fluidity and big humidity .

How to deal with the phenomenon of bucket elevator returning material too much

The phenomenon of returning material in operating bucket elevator is that the material can’t completely discharge from the bucket elevator but some falls into the inside of machine. When lifting the material, if there is returning so much material, it will reduce production efficiency, increase power consumption and material broken percentage.

 The reasons why there is returning so much material and the approaches to solve them are as following:

1.The speed of hopper is so fast. When the bucket elevator lifts different materials, the speed of hopper is different. In general, lifting dry powder or granular material, the speed is about 1~2m/s; lifting lump material, the speed is about 0.4~0.6m/s; lifting wet powder or granular material, the speed is about 0.6~0.8m/s. If the speed is too fast, the material will be discharged in advance and then causes the phenomenon of feeding material back. At this time, we should bring down the speed of hopper according to the lifting material.

2.The discharge tongue plate in die exit is installed improper. If the discharged tongue plate is far from dumped position, it will cause return material. So we should adjust the position of tongue plate in time.