What range is the speed of the rotary feeder generally controlled within?
1. Factors affecting the speed range
·Material Characteristics
Powder materials with good fluidity：
For powdery materials with good flowability such as flour and cement, the rotational speed of the rotary feeder can be increased appropriately. Because these materials are easily driven by the impeller to smoothly pass through the feeding process
The speed of the machine can generally be around 10-30 revolutions per minute. For example, in some large flour mills' pneumatic conveying systems, when conveying regular flour, the speed may be set at 20 degrees Celsius?
About per minute, this can ensureProve high transportation efficiency.
Granular materials:
If it is a granular material with larger particles and slightly lower flowability, such as plastic particles, grains, etc., the rotational speed usually decreases. Because the movement of granular materials in the feeder is relative to that of powdered materials
The material is not smooth enough, higher rotational speedMay cause material breakage or uneven feeding. In this case, the speed is generally between 5-15 revolutions per minute. Taking the transportation of plastic particles as an example,
The speed may be controlled at around 8 revolutions per minute to ensure the integrity of the particlesStable delivery.
Sticky or clumpy materials:
For materials with high viscosity or easy agglomeration, such as certain chemical raw materials, wet powders, etc., the rotational speed should be lower. Because these materials are prone to sticking to the impeller and the inner wall of the housing in the feeder
Lower rotational speed helps to reduceAdhesion phenomenon ensures the continuity of feeding. The rotational speed of this type of material may be between 2-8 revolutions per minute. For example, when transporting some sticky chemical coatings
When using raw materials, the speed may be set to around 3 revolutions per minute.
·Delivery capacity requirements
Large conveying capacity:
When a large amount of material needs to be transported, the rotational speed can be appropriately increased if the material characteristics allow. But at the same time, the capacity and power of the feeder should also be considered. For example, in the port
In the bulk cargo loading and unloading system, forIf a rotary feeder is used for the transportation of bulk materials such as coal, in order to meet the requirements of fast loading and unloading, the speed may reach a high level,
Usually around 20-30 revolutions per minute, combined with larger impellersSize and higher power configuration.
Small conveying capacity:
For situations with small conveying volumes, the rotational speed can be correspondingly reduced to ensure the accuracy of material conveying. For example, in some small food processing plants, when transporting a small amount of seasoning powder
The speed may be between 5-10 revolutions per minute,This can better control the conveying volume and avoid waste.
·System pressure and resistance
High pressure system:
In pneumatic conveying systems, if the system pressure is high, the rotary feeder needs to overcome a large pressure difference to transport the material. At this point, the rotational speed should not be too high, otherwise it may cause electrical problems
Machine overload, material leakage and other issues.Generally, in high-pressure systems, the speed is controlled within a lower range, such as 5-15 revolutions per minute. The chemical raw material system using positive pressure pneumatic conveying is
For example, when the system pressure reaches 2-3 bar, the rotational speed of the rotary feeder canIt can be set to around 8 revolutions per minute.
Low resistance system:
For conveying systems with low resistance, such as short distance and large-diameter pipelines, the rotational speed can be appropriately increased to improve conveying efficiency. For example, in some factories, there are short
In the distance powder material conveying system,The system resistance is small, and the speed of the rotating feeder can be set to 15-25 revolutions per minute.
2. Summary of General Speed Range
Taking into account various factors, the rotational speed of the rotary feeder is generally in the range of 2-30 revolutions per minute. But the specific speed needs to be determined based on the actual material characteristics, conveying capacity requirements, and system
Taking into account factors such as pressure and resistanceAccurately adjust and determine to achieve the best conveying effect.