Analysis of the causes of material blockage of vibrating feeder

Vibrating feeder is a commonly used feeding equipment. It can evenly and continuously convey materials to the crushing equipment during the production process. It is the dyeing front of the entire production line. If there is material blockage and spillage, the production line may be paralyzed in severe cases, so it is very important to ensure the normal operation of the vibrating feeder. So, what are the causes of material blockage, spillage and non-feeding of the vibrating feeder? How can we avoid failures and ensure the efficient operation of the equipment?
 

During the production process, the vibrating feeder can feed block and granular materials from the storage bin into the receiving device evenly, regularly and continuously to avoid blocking the receiving port of the crusher. The vibrating feeder uses the rotation of the eccentric block in the exciter to generate centrifugal force, so that the movable parts such as the screen box and the exciter perform forced continuous circular motion or approximate circular motion. The material follows the screen box to continuously throw the motion on the inclined screen surface, and the material is continuously and evenly delivered to the receiving port.

1. From the characteristics of the material itself, the main reason for the blockage of the vibrating feeder is the high viscosity and high moisture content of the material. Due to the reduced fluidity of the material, this will cause the usual "wall hanging" and "falling off" phenomenon after the material enters the warehouse, especially during the rainy season.

2. During the downtime of the vibrating feeder transport system corresponding to the silo, due to the long storage time in the silo, coupled with the influence of humidity, the friction between the material and the silo wall increases, resulting in blockage.

3. There are too few materials in the silo. Since the material falls from a height of more than ten meters, the deeper the silo of the vibrating feeder, the greater the acceleration and the greater the impact force. Therefore, under the action of gravity, a certain size of material will gradually store the bottom of the silo. The material is compacted by impact; when the material is discharged again, blockage is likely to occur.

4. Structural blockage. The silo of the vibrating feeder is made of steel plate, and its shape is mostly conical, square-conical or hyperbolic, with a large upper mouth and a small lower mouth. The material flows from top to bottom in the silo by its own weight, and the cross section becomes smaller as it flows downward, which is also an important cause of blockage.

5. Poor management of material storage points leads to bulk materials or foreign objects entering the warehouse. At the entrance of the silo of the vibrating feeder, the sieve holes that are not set as required are too large, causing large pieces of material or foreign objects to enter the silo, causing blockage.

6. During use, care should also be taken not to press the load of the silo directly on the feed chute. This will damage the spring plate and the connecting fork for a long time, causing one of them to break.

7. It may be due to excessive feeding that causes material accumulation in the base of the machine, increased lifting resistance of the screw conveyor, and poor operation of the hopper. In this case, the feed should be reduced immediately and the feed should be kept uniform.

8. The gap between the iron core and the armature of the feeder is too large or too small.

9. It may be due to the incompatibility between the various parts of the feeder, which is mainly caused by the looseness of some parts. This requires adjusting the components to adjust the pressure of the spring plate compression bolts of the machine to a suitable level so that the chute can reach the amplitude range specified in production.