Key features and working principles of a hook type shot blasting machine

A hook type shot blasting machine, also known as a hook shot blasting machine, is a type of surface preparation equipment used for cleaning, descaling, and removing contaminants from the surfaces of large and heavy workpieces. It is commonly employed in industries such as foundries, shipyards, steel fabrication, and metalworking. Here are some key features and working principles of a hook type shot blasting machine:

1. Design: A hook type shot blasting machine consists of a blast chamber, a trolley system with overhead rails, and a hook or hoist mechanism. The workpiece is attached to a hook or hanger and suspended from the trolley system.

2. Shot blasting process: The cleaning process in a hook type shot blasting machine involves propelling abrasive media, such as steel shots or grits, at high velocity onto the surface of the suspended workpiece. The abrasive media is typically propelled by one or more blast wheels or turbines, which are positioned strategically in the blast chamber.

3. Blast wheels or turbines: Blast wheels or turbines are centrifugal wheels equipped with blades or paddles that throw the abrasive media onto the workpiece surface. The rotation of the blast wheels and the controlled ejection of the abrasive media create a blasting pattern, ensuring thorough coverage of the workpiece.

4. Surface preparation: The abrasive media impact the surface of the workpiece, removing rust, scale, paint, coatings, and other contaminants. This process helps achieve a clean and uniform surface, promoting improved adhesion for subsequent processes like painting, coating, or further treatment.

5. Recovery and recycling system: To minimize waste and maintain the efficiency of the shot blasting process, hook type shot blasting machines are equipped with a recovery and recycling system. This system collects the used abrasive media, separates it from the removed contaminants, and recirculates it back into the machine for reuse.

6. Dust collection: Shot blasting generates a significant amount of dust and debris. To ensure a clean and safe working environment, a dust collection system is integrated into the machine. This system captures and filters the dust, preventing it from being released into the surrounding area.

7. Automation and control: Many hook type shot blasting machines are equipped with automation features and advanced control systems. This allows for precise control of process parameters, such as blasting time, speed, and abrasive flow, ensuring consistent and efficient cleaning results.

Hook type shot blasting machines are suitable for cleaning and preparing the surfaces of large and heavy workpieces, such as castings, forgings, structural steel, and ship components. The specific configuration and specifications of the machine can vary depending on the application requirements and workpiece dimensions.

It is essential to follow the manufacturer's guidelines and safety instructions when operating a hook type shot blasting machine to ensure optimal performance and operator safety.