The Bin activator, also known as the
"Activated hopper" or "Vibrating bottom", is a processing
equipment used for the loose and discharge powder, granular or small block
materials in silos. Its core function is to break the "bridging" and
"rat hole" phenomena of materials through vibration, ensuring that
the materials flow out of the silos and hoppers evenly and stably and avoiding
blockages. It is widely used in industries such as chemical engineering,
building materials, food, mining, and pharmaceuticals.
The fluidity of some powdery bulk materials is very poor, and the unloading operation cannot be realized through various auxiliary flow methods, such as silo wall vibrator, air hammer, hammer and even air cannon. The horizontal vibration of VRV Bin activators generate shear forces, which allows the continuous flow of bulk material. It is mounted below the hopper for arch breaking and uniform feeding.
Working Principle
When the vibration motor is started, vibration waves will be generated and transmitted to the material through the activation cone. This vibration can break the friction and cohesion between materials, making them in an activated state and allowing them to flow out more smoothly from the bottom of the silo.
1. Energy input: The equipment is equipped
with a vibrating motor. When the motor operates, it generates high-frequency
and low-amplitude vibration energy (the vibration frequency is usually 50 -
300Hz, and the amplitude is 0.1 - 5mm, which can be adjusted according to the
characteristics of the material).
2. Energy transfer and material activation:
The vibration energy is transferred to the hopper body through the elastic
elements of the hopper (such as springs and rubber shock absorbers), creating a
relative movement between the inner wall of the hopper and the material, and
breaking the cohesive force and frictional force between the material
particles.
3. Breaking blockages and uniform discharging: The "activated" material loses its stability. The original "bridging" (the material forms an arch support above the hopper outlet) and "rat holes" (the material only flows out from local channels while the rest remains stagnant) formed by gravity compaction are broken. Finally, the material evenly flows towards the outlet along the inner wall of the hopper, achieving continuous discharging.
Structural Characteristics
Part name
Core function
Hopper
body
It
is a component for accommodating and guiding the material. The inner wall is
mostly designed to be conical to reduce dead corners where materials may
remain. The materials can be selected as stainless steel (for
food/pharmaceutical industries) or carbon steel (for chemical/mining
industries).
Vibrating
motor
Power
source, determining the vibration frequency and amplitude:
-
Vibrating motor: Suitable for materials with medium and low viscosity. It has
low cost and is easy to maintain.
-
Electromagnetic vibrator: Suitable for scenarios requiring high-precision
material control, with stronger adjustability of vibration parameters.
Elastic
shock absorption system
It
is composed of springs (such as cylindrical helical springs and rubber
springs), and its functions are as follows:
1.
Transmit vibration energy to the hopper.
2.
Isolate the transmission of vibration to the silo and the machine frame to
avoid equipment resonance or damage.
Control
system
It
includes frequency converters, temperature controllers, etc. It can adjust
the vibration frequency and amplitude (some models support stepless speed
regulation) to adapt to different materials (for example, fine powder
requires low amplitude and high frequency, while bulk materials require high
amplitude and low frequency).
Auxiliary
components
Such
as level sensors (to monitor the remaining amount of materials),
wear-resistant linings (to extend the lifespan of the hopper, suitable for
abrasive materials), dust covers (to prevent dust from escaping), and blowing
nozzles
Advantages
✔ Robust and enduring, compact design
✔ Seamless cone design, double flange, seamless gasket to ensure long-term operation
✔ Various material forms according to clients specification
✔ Optional wear plates (stainless steel, plastics, ceramics and other special material)
✔ Durable suspension and seal assemblies
Key Data
FAQ
Q1. How to choose the right equipment ？
A: VRV suggest you provide us the information of bulk material need to be handled, including the material parameters so that our technical staff will provide the most appropriate advice
Q2. Can I buy just one equipment?
A: Yes, there is no quantity limitation. We offer not only individual equipment, but also customize production lines for enterprises.
Q3. What’s your delivery time?
A: It depends on equipment. Normally it will take 1 to 3 months.
Q4. What’s your price terms and payment terms?
A: We accept EUR and USD.
Q5. How to guarantee the quality?
A: VRV marks every equipment with unique serial number, by which design parameters can be easily traced and after-service can be ensured in years. VRV takes responsible for every equipment perpetually.
Any issues occurred during the life cycle of VRV vibratory equipment will be analyzed by our engineers thus to find out the optimal solution. Our company is also willing to assist customer’s field experts and maintenance engineers and provide our test data and advices to help them solve problems.
Application Examples
ipv6 network supported 