Installation of a blow-suction dust removal system completed at a CNC machining workshop in Shandong.
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Installation of a blow-suction dust removal system completed at a CNC machining workshop in Shandong.
The core treatment area of this CNC machining workshop spans 1,440 square meters—measuring 60 meters in length and 24 meters in width—and features a high density of welding operations. In such an environment, welding fumes are continuously generated and disperse rapidly.
To address the key challenges posed by the workshop's expansive layout, the rapid spread of fumes, and the large treatment area, Meilan Environmental Protection tailored a "push-pull" dust and fume extraction solution.
Unlike traditional single-mode suction dust removal systems, the Meilan blow-suction dust removal system deployed here features an innovative design combining a dual-side layout with airflow circulation.
Regarding the ductwork configuration, suction ducts are neatly installed along one side of the workshop, while corresponding blow ducts are positioned on the opposite side, creating a symmetrical airflow guidance structure.
This layout ensures comprehensive coverage of the entire 60-meter-long treatment zone, eliminating any blind spots in fume capture and leaving the smoke and dust nowhere to hide within the workshop.
Two main units—each with an airflow capacity of 30,000 m³/h—operate in tandem; the blow ducts deliver a steady stream of air while the suction ducts generate uniform negative pressure. This establishes a dense layer of circulating air above the workshop's overhead crane, acting much like an "invisible protective shield."
Welding fumes rise on thermal currents; upon reaching the airflow circulation zone above the overhead crane, they are instantly channeled into the intake ducting and rapidly conveyed to the central dust collection unit.
The system operates on the core principles of "source capture, high-efficiency purification, and indoor recirculation." By eliminating the need for external exhaust, it avoids the environmental compliance pressures associated with outdoor emissions while recovering purified air—thereby reducing workshop ventilation energy consumption. This approach delivers dual benefits of environmental protection and energy conservation, aligning with the trend toward green industrial transformation.
After entering the main dust collection unit, the dust-laden air undergoes treatment via high-efficiency Methylene Blue (MB) purification technology, achieving a filtration precision of 0.3 μm or finer. The purified air meets relevant national emission standards and is recirculated back into the workshop.
This approach conserves energy by reducing the need for fresh air intake and prevents secondary pollution, making it perfectly suited for the requirements of enclosed workshop operations.
Additionally, the two systems—each with an airflow capacity of 30,000 m³/h—are precisely matched to the needs of the 1,440 m² workshop; they operate stably and quietly, ensuring no disruption to normal production.
The system also features fully automated operation and automatic dust cleaning; with fewer potential points of failure and simple maintenance requirements, it significantly lowers the workshop's operational and maintenance costs as well as the labor burden.
Installation of a blow-suction dust removal system completed at a CNC machining workshop in Shandong.
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