Scraping Plate Sandblasting Room

Scraping Plate Sandblasting Room: A Core Equipment for Large-scale Workpiece Surface Treatment with High Efficiency and Environmental Friendliness
In industries such as mechanical manufacturing, heavy industry, steel structure, shipbuilding, engineering machinery, gas cylinders / pressure vessels, locomotive and vehicle manufacturing, sandblasting treatment is a key process for removing rust, removing oxide scales, eliminating internal stress, and enhancing the adhesion of coatings. Traditional open-air sandblasting is characterized by large dust emissions, low efficiency, and the inability to recycle the projectiles. It has become difficult to meet modern production requirements. The scraping plate sandblasting room, with its advantages of continuous sand recycling, fully enclosed operation, high automation level, and wide applicability to workpieces, has become the mainstream solution for surface pre-treatment of medium and large-sized workpieces. It is also an important equipment for enterprises to achieve green production and improve efficiency.
I. Working Principle and Process Characteristics of Scraping Plate Sandblasting Room
The scraping plate sandblasting room adopts the core process of compressed air sandblasting + mechanical scraping plate recycling, achieving integrated operations of sandblasting, discharging, recycling, separation, and dust removal.
During operation, workpieces are sent into the sandblasting room by hoists, trolleys, or rollers. Operators hold the spray guns inside the room and spray abrasive materials (quartz sand, steel sand, copper ore sand, etc.) at high speed onto the workpiece surface to complete rust removal, cleaning, and strengthening treatment. The abrasive materials, oxide scales, dust, and impurities fall to the ground, and are continuously collected and transported by the bottom scraping conveyor system, sent up by the elevator, and sent to the sand material purification and separation system. After separating dust and impurities, the clean abrasive materials flow back to the storage box for recycling. The entire system operates in a sealed environment, equipped with efficient dust removal devices, achieving dust-free, low-noise, and environmentally friendly operations.
II. Core Components of Scraping Plate Sandblasting Room
The scraping plate sandblasting room is a modular, fully enclosed structure. It is mainly composed of five systems:
Room System: Made of steel frame + wear-resistant plates, with rubber protective plates inside, providing impact resistance, wear resistance, and long service life. The room is equipped with safety doors, observation windows, lighting, and emergency stop devices to ensure operational safety.
Scraping Plate Sand Recycling System: Bottom-mounted scraping conveyor can continuously, stably, and efficiently recycle scattered abrasive materials, without clogging or blocking, and operates reliably, suitable for various abrasive materials such as steel sand, steel balls, and quartz sand. Compared to spiral conveyors, the scraping plate is more wear-resistant and maintenance is simpler.
Sand Material Lift and Purification System: Composed of bucket elevators and air separation filters, it automatically separates impurities, dust, and crushed sand materials, ensuring clean and uniform recycled abrasive materials, improving sandblasting quality and efficiency.
Sandblasting and Air Supply System: Equipped with high-efficiency sandblasting tanks, sandblasting guns, pressure regulating valves, and oil-water separators, allowing adjustment of sandblasting pressure to meet different cleaning grade requirements (Sa2.5, Sa3).
Dust Removal System: Using pulse filter dust collectors or bag filters, negative pressure ventilation is adopted, collecting the dust generated by sandblasting, ensuring compliance with emission standards, and eliminating dust pollution in the workshop.
III. Core Advantages of Scraping Plate Sandblasting Room
1. High automation level and high production efficiency: Automatic sand recycling, automatic circulation, automatic purification, no need for manual sand removal or transportation, significantly reducing labor intensity, suitable for continuous batch production.
2. Wide applicability, capable of handling large workpieces: Can handle steel structures, frames, tanks, gas cylinders, engineering machinery, ship components, large molds, etc., with no size restrictions, extremely versatile.
3. High sand material recycling rate, low operating costs: The sand recycling rate can reach over 95%, with low consumption and low costs, achieving significant economic benefits over the long term.
4. Excellent environmental performance, meeting safety production requirements: Fully enclosed operation + efficient dust removal, no dust spillage, no environmental pollution, improving the working environment for workers, meeting environmental inspection standards.
5. Strong and durable structure, simple maintenance: The scraping plate system is wear-resistant and durable, with low failure rate, few wear parts, suitable for long-term high-intensity use by heavy industry enterprises.
IV. Typical Application Domains of Scraping Plate Sandblasting Room
Rust removal and pre-treatment of steel structures, bridges, towers
Sandblasting cleaning of pressure vessels, gas cylinders, storage tanks
Structural component reinforcement for construction machinery, excavators, and loaders
Sandblasting treatment for ship sections, decks, and mechanical components
Removal of oxide scale and surface strengthening for molds, castings, and forgings
V. Selection and usage tips for scraper-type sandblasting rooms
Determine the internal space of the sandblasting room based on the maximum size of the workpiece.
Select the number of sandblasting guns, the specifications of the sandblasting tanks, and the scraper conveying capacity according to the production volume.
Choose the appropriate abrasive (steel sand, steel balls, quartz sand, etc.) based on the material of the workpiece.
Regularly inspect the scraper chains, dust removal filters, and sandblasting hoses to ensure stable operation of the equipment. Conclusion
The scraper-type sandblasting room is a representative equipment in modern industrial surface treatment, featuring high efficiency, environmental friendliness, automation and high reliability. It has completely solved the problems of high pollution, low efficiency and high cost in traditional sandblasting. With the continuous improvement of manufacturing industry's requirements for coating quality and environmental protection, the scraper-type sandblasting room has become a standard pre-treatment equipment necessary for industries such as heavy machinery, steel structures, pressure vessels and engineering machinery, providing strong support for enterprises to enhance product quality and achieve green production.