Vacuum feeding machine for fly ash

The fly ash vacuum feeder is widely used in port cargo ships for unloading and cleaning of powder materials (fly ash, mineral powder, cement) or small particles, cleaning of powder materials or small particles in the warehouse, and collection of grain unloading and unloading.
　　
In the western and northern regions of China, many power plants store their fly ash in square and circular warehouses, which vary in size and height. Equipment such as forklifts are often used to load the ash, which objectively causes significant environmental pollution and fly ash loss. If negative pressure suction machines are used to suction and load the ash, this drawback can be effectively avoided. Our company has developed multiple solutions for users to choose from based on their actual on-site conditions after years of research and development.
　　
1. The fixed type fly ash cleaning, outbound, loading and unloading machine is suitable for small ash storage warehouses and those with limited space.
　　
2. The mobile fly ash cleaning, outbound, loading and unloading machine is suitable for large ash storage warehouses or yards.
　　
Working principle of fly ash vacuum feeder:
　　
Fly ash vacuum feeding machine, also known as low-pressure pneumatic continuous conveyor. The fly ash vacuum feeder uses a centrifugal fan (air compressor, Roots blower) as the power source, applies the principle of gas-solid two-phase flow, combines fluidization technology, jet technology, and pressure difference principle, and uses an electric rotary feeder as the feeding device to feed the material into the material and gas mixing chamber. While the material is fluidized in the material and gas mixing chamber, the high-speed airflow generated by the double ring nozzle is used to feed the material into the acceleration chamber, and the suspended flow enters the conveying pipeline. The pneumatic pressure difference is used to feed the material along the pipeline into the receiving bin. The material gas is separated and filtered through a bag filter before being discharged into the atmosphere.
　　
Characteristics of fly ash vacuum feeder:
　　
1. Low investment, low operating costs, and significant energy savings
　　
The low-pressure continuous transmission system not only reflects its investment savings in engineering cost, but also has low operating costs. Due to the absence of inlet and outlet valves, as well as vulnerable parts, the operating costs are low. Additionally, using low-pressure conveying can save about 30% of energy consumption compared to air compressor systems.
　　
2. Easy to operate
　　
If the control of the device body only includes the electric rotary feeder and the intake valve, then the control of the device body only needs to be done; Start” Or“ Shutdown” Operation and device operation only require inspection, without the need for manual monitoring. Due to the simplicity of the continuous pump process system, the control system configured is also correspondingly simple. According to the system configuration, even if a PLC control system is used, if a fault occurs, it has an alarm system and can be manually controlled without affecting the normal operation of the system.
　　
3. Equipment and pipelines have minimal wear and long service life
　　
Due to the use of low-pressure conveying, the flow rate inside the equipment and ash conveying pipes is low, and the conveying concentration is constant. Therefore, the system equipment and pipelines have minimal wear and have a long service life.
　　
4. Convenient and flexible system layout
　　
Due to its small size and low installation height, the device is convenient and flexible in system layout, fully meeting the needs of engineering layout.
　　
5. The quality requirements for the gas source are not high
　　
The continuous pump power air source generally uses centrifugal fans or Roots blowers and compressors, without the need for an air purification system. According to the system design, there are only certain requirements for air volume and pressure. Depending on the situation, a compressed air station gas source can also be used.
　　
6. High system reliability
　　
① The low-pressure pneumatic continuous conveyor uses centrifugal fans or Roots fans and compressors as the power source, and the high performance of the fans determines the operational reliability of the system.
　　
② The pneumatic conveying system composed of gas-solid activated carbon quicklime injectors can be designed with multiple hoppers sharing a single air source layout under the condition of allowable ash volume on site. It can be designed in the form of single machine single tube or multi machine common tube or multi machine common air source layout. Generally, the number of equipment is small, making the entire system simple and reliable.
　　
③ The gas-solid activated carbon quicklime injector has a stable feed gas ratio, no impact load, and no frequent valve action as in conventional pneumatic conveying processes, greatly reducing equipment failure rates.