In today's era, as industrial manufacturing moves toward high-quality development, managing uncontrolled emissions of smoke and dust in workshop environments remains a major pain point for many enterprises. This is especially true for open workstations such as welding, cutting, and grinding, where conventional dust removal methods often fall short. Recently, an advanced dust-control technology—based on "blow-and-suction airflow" management—has been rapidly gaining traction across various manufacturing companies thanks to its exceptional efficiency and energy-saving performance, offering a groundbreaking solution for tackling open-source dust generation.

In the welding workshop of a large engineering machinery manufacturing enterprise in Suzhou, the once-common sight of thick, billowing smoke has now vanished. Above dozens of welding stations, the formerly drooping, bulky fume hoods are nowhere to be seen—replaced instead by an almost "invisible" system: on one side, slender, elongated air-supply slots gently blow out even airflow; on the other, parallel exhaust hoods precisely capture the airborne welding fumes as they rise. Workers no longer need to constantly readjust the position of the dust collection hoods, and their workspaces have become bright and unobstructed.

"This finally solves the long-standing, stubborn problem we’ve been grappling with for years," explained Engineer Wang, head of the company’s environmental protection department, to reporters. "In the past, we relied on conventional top-suction or overhead hoods, but during the smoke and dust extraction process, these fumes would pass right through the operators’ breathing zones, posing a serious health risk. Moreover, to ensure efficient dust collection, we had to crank up the fan power significantly—resulting in excessive noise levels and skyrocketing energy consumption—yet the outcomes were still far from ideal. It was truly a case of doubling the effort for half the result."

The principle behind the blow-and-suction dust removal technology cleverly draws on classical aerodynamic theories. The system features air nozzles positioned precisely at the dust-generating point, creating a steady and highly controlled airflow that acts like an "invisible hand," guiding lightweight, airborne dust particles toward a powerful negative-pressure suction port located on the opposite side. This setup forms an invisible yet remarkably effective "air curtain seal," which firmly contains the pollutants within the moving air stream—ultimately channeling them into purification equipment for thorough treatment.

“The fundamental difference between this technology and traditional dust removal lies in the shift from ‘passive suction’ to ‘active guidance and control.’” Dr. Zhang, Technical Director of Qingfeng Technology, a leading domestic environmental protection technology company, explained, “Think of it as building an ‘airflow canal’ across a wide river. Instead of trying to drain the entire river, we guide the water flow—specifically, the dust-laden air—efficiently along a narrower channel we’ve carefully designed: the blow-suction air curtain. This approach allows us to achieve more thorough dust collection with significantly less airflow, reducing the system’s overall energy consumption by over 30%.”

The head of the construction machinery company also added another key benefit: "In addition to energy savings and high efficiency, this system has indirectly helped us enhance product quality. Thanks to the significantly improved air cleanliness in the workshop—resulting in fewer airborne metal dust particles—it has become essential for precision welding and preventing surface contamination of our products. This clearly demonstrates that environmental investments aren’t merely a cost; they can also translate into tangible production gains."

As the country increasingly tightens regulations on workplace environments within corporate workshops and controls uncontrolled emissions, blow-suction dust removal technology is poised for broad application prospects. Industry experts generally agree that this technology is not only suitable for welding workshops but can also deliver unique advantages in numerous other fields—such as laser cutting, chemical material handling, and material transportation—where open dust sources are present. It is set to become another critical technological tool, helping drive the green transformation of manufacturing while safeguarding the healthy breathing of industrial workers.