NEWS CENTER

Bucket elevator feed height adjustment considerations:


Release time:

Nov 03,2021

Factors to be considered when adjusting the height of the feed port of the bucket elevator: adjust the height of the feed port to ensure that the material of the feed port is evenly spread in the width direction, and avoid uneven feeding and loading of the bucket elevator, resulting in uneven wear of the chain plate (or tape), hopper or sprocket, or deviation of the chain plate (or tape) of the hoist. Therefore, consider the following factors:

BucketHoistFactors to consider when adjusting the height of the feed inlet:

Adjust the height of the feed port to ensure that the material at the feed port is evenly spread in the width direction, and avoid uneven feeding and loading of the bucket elevator, resulting in uneven wear of the chain plate (or tape), hopper or sprocket or hoist The chain plate (or tape) deviates. Therefore, consider the following factors:

1. The sliding angle of the feed slot should be appropriate to avoid blockage of the material in front of the feed port. The sliding angle of the chute should be determined according to the characteristics of the material, the material and shape of the chute, and the conditions of use. Generally, the slip angle is 5 ° ~ 10 ° larger than the dynamic repose angle of the material. For bulk materials, materials with small moisture and materials with mechanical flow, the slip angle is smaller, while for powdery materials with large moisture and materials with gravity flow, the slip angle is larger.

2. The adjustment of the feed port should consider the hopper typeHoistLoading method, under the premise of ensuring smooth feeding, does not increase the resistance of the elevator movement (mainly refers to the resistance of lifting materials and the resistance of removing materials). The bucket hoist has two loading methods, namely, the take-out type and the inflow type. The cutting type is mainly used for conveying powdery, granular and small pieces of materials without grinding or semi-grinding. Hoppers are usually arranged sparsely, thus allowing them to run at higher speeds because there is no great resistance when picking up material. The inflow type is used to transport large grindable materials, and its hoppers are closely arranged to prevent materials from being scattered between the hoppers, and the hopper running speed is low.

3. For shoveling and loading, the higher the height of the material, the greater the resistance when shoveling the material. In order to avoid overloading and material back-scattering, the height of the shovel material should be lower than the level of the lower sprocket shaft. That is to say, when the position of the feed port of the bucket hoist is adjusted due to insufficient slip angle, the original designed feed port position can be appropriately reduced, and the adjustment range is large.

4. For inflow loading, in order to prevent materials from entering the lower part of the shell, the position of the lower edge of the feed port is higher than the level of the lower sprocket shaft. That is, when the position of the feed port is adjusted due to insufficient sliding angle, the feed port can be appropriately lowered, but the lowering position is limited. Theoretically, the position of the feed port is not limited, the higher the feed port position, the shorter the distance of the hopper loading section, the lighter the load of the hoist. However, when the position of the bucket hoist entrance rises, on the one hand, it is necessary to increase the guide rail (or guide plate) inside the corresponding casing to avoid the shaking of the chain plate (or tape), on the other hand, it is necessary to consider the bucket.HoistClogging problem when stopped due to fault.