Dalian Sunshine Grate Factory layered coal bunker, mixed coal feeder delivery

Aug 20,2025

Dalian Sunshine Grate Factory Layered Coal Bunker, Mixed Coal Feeder Shipment

Dalian Huiying Machinery Co., Ltd. was established in 2006, currently has fixed assets of over 500 million yuan. The parent company, Dalian Sunshine Boiler Auxiliary Machine Co., Ltd., was established in 1998 and is located in the Yaojia Industrial Zone, Nanguanling Town, Ganjingzi District, Dalian City. It is one of the largest boiler auxiliary machine manufacturing enterprises in China.


The production base is located in the important industrial city of Wafangdian, covering an area of over 300,000 square meters, with more than 800 employees, including 100 R&D technical personnel. It mainly produces and tests over 600 sets of equipment, with five major production workshops including machining, riveting and welding, casting, and assembly.

The combination technology of layered coal bunker and mixed coal feeder significantly improves boiler combustion efficiency and environmental performance by optimizing coal distribution and mixing uniformity. Its core advantages can be summarized as follows:

Core Advantages of Layered Coal Bunker

Layered Combustion Optimization

By using a sieve to layer coal by particle size (large particles in the bottom layer, medium particles in the middle layer, fine particles in the top layer), a loose coal layer structure is formed, greatly reducing ventilation resistance, improving air permeability uniformity, and avoiding "fire mouth" and uneven combustion phenomena.
After the coal layer is layered, the combustion synchronization is enhanced, and the thermal intensity of the firebed is increased.

Automation and Energy Saving

Reduce manual intervention (such as eliminating manual adjustment of coal layers), creating conditions for the automatic operation of the boiler.
More complete combustion, reducing initial smoke concentration and local high temperatures, and decreasing pollutant emissions.

Enhanced Adaptability

Improves compatibility with different coal types, solving the problem of uneven distribution of lump coal and coal powder in the coal bunker.

Core Advantages of Mixed Coal Feeder

Mixing Uniformity

Forced stirring of wet coal lumps and coal powder eliminates the problem of "lump coal accumulation on both sides and coal powder concentration in the middle" in the coal bunker, ensuring a more uniform subsequent layering effect.
When cooperating with the layered coal bunker, it achieves a regular arrangement of "lower coal lumps, upper coal surface" on the grate surface, with consistent ventilation resistance and significantly improved combustion synchronization.

Structural Innovation

The integrated design (such as "Mixed Coal Layering Integrated Machine") coordinates the amount of mixed coal and layered coal, avoiding the problem of uneven coal layer thickness caused by mismatched coal transport amounts in traditional separate equipment.

The through-shaft technology reduces bearing wear risk and supports stable operation of large tonnage boilers (such as 165t/h).

Ease of Operation: Integrated equipment reduces maintenance complexity, such as the segmented design of the mixed coal auger to avoid overload damage.

Note: The collaborative design of the layered coal bunker and mixed coal feeder (such as "Intelligent Coal Feeding Machine for Mixed Coal Layering") is the mainstream solution for efficient combustion in current layered combustion boilers.