Fully Automatic Waffle Floor Pneumatic Recovery Sandblasting Room (Surface Treatment System for Steel Structures / Shipbuilding / Large Workpieces)

This fully automatic abrasive recovery blast room is a large-scale, intelligent surface treatment system that combines a honeycomb-style abrasive recovery floor with pneumatic conveying technology. It is specifically designed for the abrasive blasting and cleaning of heavy workpieces, such as steel structures, ships, large castings, and welded components. Its core operating principle involves using the honeycomb floor technology and pneumatic conveying to recover abrasive media via the airflow generated by a negative-pressure fan; the media is transported through piping to an abrasive-dust separator, where usable abrasive automatically falls into the pressure blast tank for the next blasting cycle, while waste materials—such as broken abrasive, welding slag, mill scale, and dust—are automatically routed to the dust collection system for filtration. The entire system achieves fully automated control over the complete process—including abrasive recovery and sorting, blast gun operation, dust collection, and blast tank functioning—and features automatic fault alarms, thereby significantly reducing the need for manual intervention.

Regarding manufacturing and structural quality, the blast room enclosure utilizes a structural steel frame design, with exterior walls constructed from 50mm-thick color-coated steel sandwich panels (featuring a steel sheet thickness of 0.36mm). …panels feature a sound-insulating polystyrene core to effectively reduce noise. The structure utilizes square tubing for internal support, offering an aesthetically pleasing appearance, ease of installation, and corrosion-resistant durability, while also providing excellent sound insulation and thermal properties. The honeycomb flooring is a core technical component of the system; constructed from steel mesh with symmetrically arranged “V”-shaped grilles, it facilitates both the collection and removal of abrasive media and ensures safe footing for workers. Unlike traditional mechanical recovery blast rooms—which require deep excavation and the installation of extensive mechanical equipment such as screw conveyors and bucket elevators—this fully automatic recovery blast room employs pneumatic conveying principles. It eliminates the need for mechanical conveyors and deep pits, thereby significantly reducing civil engineering costs and construction time. Key wear-prone areas are fitted with standardized modular components to facilitate maintenance and replacement. The dust collection system utilizes a high-efficiency cartridge dust collector (featuring 16–96 cartridges and a filtration area of ​​160–960 m²). Employing an optimized dust extraction method, it rapidly draws dust generated during blasting operations into the extraction ductwork and through a high-efficiency… …filtration is handled by a dust collector. The entire unit utilizes an intelligent PLC control system paired with a touchscreen interface, enabling both automatic and manual operation modes; interlocked system controls significantly enhance the ease of inspection and maintenance.

This fully automatic recovery system for blast rooms offers outstanding performance advantages and application value. First, it boasts extremely high abrasive recovery efficiency: utilizing pneumatic piping for transport, the recovery rate reaches 99%—far surpassing traditional mechanical recovery methods. The integrated suction floor recovers all abrasive material instantly, leaving no residue on the ground and eliminating the need for manual cleanup. Second, it requires no deep excavation, resulting in low civil engineering costs: the honeycomb floor structure eliminates the need for deep pits, requiring a depth of only 0.8 to 1 meter (or no pit at all in some locations), which significantly saves on infrastructure investment and shortens construction time. Third, it offers low operating costs and is energy-efficient and eco-friendly: the absence of mechanical drive components results in low failure rates and maintenance-free operation, reducing downtime and associated losses; the airflow balance design of the honeycomb floor recovery system cuts fan energy consumption by approximately 15%–25%; and dust emissions meet or fall below national and local standards. …environmental requirements. Fourth, it offers an excellent working environment: the blast chamber utilizes a dust-suppression circulation system featuring top-down airflow—with air intake at the top and extraction at both the bottom and sides—ensuring dust is continuously drawn downwards; this maintains high visibility and a favorable operating environment for staff, with illumination levels exceeding 400 lux. Fifth, it has a wide range of applications, making it suitable for the abrasive blasting of large workpieces such as steel structures, ships (during construction and repair), steel plates, boilers, shipping containers, transformer housings, and large castings.

Regarding its scope of application, this blast room with an automatic recovery system is widely used in sectors such as shipbuilding and repair (rust removal and cleaning of hull plates and compartments), steel structure engineering (surface pretreatment for bridges and architectural steel), heavy machinery manufacturing (scale removal and surface strengthening for large castings, forgings, and welded parts), the petrochemical industry (rust removal on the inner and outer walls of storage tanks and pipelines), rail transportation (blast cleaning of rolling stock and carriages), wind power equipment (surface treatment for tower sections and blade molds), and military equipment manufacturing. This blast room with an automatic recovery system is an indispensable core piece of equipment for the surface treatment of large, modern workpieces.