Semi-Automatic Partial Recovery System Sandblasting Room (Waffle Floor / Mechanical Scraper Type Large Workpiece Surface Treatment Equipment)

This semi-automatic partial recovery system sandblasting room is a large-scale surface treatment equipment that utilizes waffle-style suction floor or mechanical scraper recovery methods, specifically designed for blasting and cleaning of heavy workpieces such as steel structures, shipbuilding components, large castings, and welded parts. It is suitable for small-to-medium enterprises with moderate automation requirements and limited budgets, as well as on-site operations for large workpieces. The core working principle is: under the negative pressure generated by the fan, an airflow layer is formed inside the blast room from the top to the bottom; the abrasive forms a solid-gas mixture under compressed air action and is propelled onto the workpiece surface for cutting and cleaning; part of the abrasive breaks down into dust after cutting, and the downward airflow carries the dust, mixed with abrasive and rust removal impurities, through the waffle recovery floor back to the separation system for sorting; after sorting, reusable abrasive returns to the storage hopper and is automatically fed back into the blasting system for recycling; non-reusable dust and impurities are directed to the dust collector for fine filtration. Unlike fully automatic recovery systems, this semi-automatic sandblasting room adopts a partial recovery method—abrasive is mainly automatically recovered through the waffle floor or scraper recovery area, while small amounts of residual abrasive in other areas can be manually collected using brooms, shovels, or by blowing with compressed air into the recovery pit, significantly reducing equipment costs while maintaining reasonable recovery efficiency.

In terms of manufacturing quality and structural integrity, the blast room features a structural steel frame construction with color steel sandwich panel cladding, and the interior walls are lined with 5mm polyurethane sheets, offering durability, sound insulation, aesthetics, robustness, and excellent sealing. The recovery system offers two options: Waffle pneumatic recovery – uses pneumatic recovery principles with a waffle suction floor, eliminating the need for screw conveyors, belt conveyors, and bucket elevators, avoiding wear and blockage issues during abrasive transportation and significantly reducing failure rates and maintenance workload; Mechanical scraper recovery – uses a combination of local scrapers and bucket elevators, with a pit excavated on one side of the room for the elevator system; abrasive not falling into the pit during operation can be pushed into the recovery opening with brooms or shovels. The blasting system features one or multiple blasting pots with multiple high-speed blast guns, each individually controllable, with infinitely adjustable working pressure. The nozzles are made of durable carbide material with an average service life of 800-1000 hours. The dust collection system employs advanced cartridge filter technology with a filtration efficiency of up to 99.9%, with dust emissions far below national environmental requirements. The control system features PLC + touch screen display, supporting both automatic and manual operation modes.

The performance advantages and application value of this semi-automatic partial recovery system sandblasting room are exceptionally prominent. First, low investment cost and economical – no deep pit required (or pitless option available), low civil construction cost and short construction cycle; simple materials significantly reduce the overall cost of the sandblasting room, making it particularly suitable for small and medium enterprises. Second, flexible recovery methods – choose between waffle pneumatic recovery or mechanical scraper recovery; pneumatic recovery requires no mechanical transmission equipment with low failure rates; mechanical recovery has a simpler structure and lower cost. Third, energy-efficient operation – abrasive circulation, separation, and dust collection share a single fan (one air source for multiple purposes), saving approximately 30% energy compared to traditional sandblasting rooms. Fourth, high abrasive utilization – equipped with abrasive separation and sorting devices for automatic abrasive recycling, improving utilization rate and blasting efficiency. Fifth, wide application scope – suitable for surface rust removal of large steel structures, shipbuilding components, bridges, aerospace components, rail equipment, wind power towers, port machinery, petroleum machinery, engineering machinery, and more.

In terms of application scope, this semi-automatic sandblasting room is widely used in shipbuilding (hull plate rust removal and cleaning), steel structure engineering (surface pretreatment of bridges and building steel structures), heavy machinery manufacturing (scale removal from large castings and forgings), petrochemical industry (internal and external rust removal of storage tanks and pipelines), rail transit (rolling stock blasting cleaning), and wind power equipment (tower surface treatment). This semi-automatic partial recovery system sandblasting room is an economical surface treatment solution that balances performance and cost for small-to-medium enterprises and large workpiece on-site operations.