Q37 Series Hook-Type Shot Blasting Machine: Working Principle, Daily Maintenance & Special Working Condition Solutions
The Q37 series hook-type shot blasting machine is ideal equipment for processing large workpieces that cannot be turned over in the casting, forging, and steel structure industries. It sends workpieces into the blasting chamber through a hook system and uses high-speed projected abrasive streams to impact and friction the workpiece surface in all directions, efficiently completing tasks such as rust removal, oxide scale removal, and surface strengthening. To ensure long-term stable operation of the equipment, understanding its working principle and mastering correct maintenance methods is crucial.
This equipment is suitable for: foundries, heat treatment plants, hardware manufacturing, auto parts manufacturing, and other industries.
For detailed information on the principle and solutions of the hook-type shot blasting machine for large non-rotatable workpieces, please click: https://dt-shotblasting.com/product-item/348/
Working Principle: Efficient, Comprehensive Cleaning Process
The hook-type shot blasting machine working principle is highly automated, designed to achieve cleaning effects without dead angles.
- Workpiece Loading: The operator hangs the workpiece to be processed (such as large castings and welded structural parts) on the hook.
- Feeding into the Blasting Chamber: The hook system moves along the track and smoothly sends the workpiece into the sealed blasting chamber. Depending on the model, the equipment can be equipped with a single-hook or double-hook system to improve operating efficiency.
- Shot Blasting Cleaning: After entering the blasting chamber, the hook drives the workpiece to rotate and revolve. At the same time, high-efficiency shot blasting wheels arranged at different positions of the chamber start, accelerating and projecting abrasive onto the workpiece surface. This three-dimensional dynamic projection method ensures that every corner of the workpiece is evenly covered, achieving 360° cleaning without dead angles.
- Abrasive Circulation: After impacting the workpiece, the abrasive and the mixture of stripped rust, sand, and other impurities fall onto the grid at the bottom of the blasting chamber and then enter the screw conveyor below. The mixture is sent to the bucket elevator and then lifted to the separator at the top of the machine.
- Separation and Recovery: In the separator, intact abrasive is separated from dust and debris. Qualified abrasive flows into the storage hopper for the next cycle, while waste and dust are sucked into the dust removal system and discharged after filtration, ensuring a clean working environment.
Daily Maintenance Points: The Key to Extending Equipment Life
Regular maintenance is fundamental to ensuring efficient operation of the hook-type shot blasting machine maintenance and extending its service life.
· Daily Inspection
· Wear-resistant guard plates: Check the wear condition of the wear-resistant guard plates on the inner wall of the blasting chamber. If severely worn, replace them in time to prevent abrasive from penetrating the chamber body.
· Shot blasting wheels: Check the wear degree of vulnerable parts such as blades, distributor wheels, and directional sleeves. Uneven or excessive wear will affect the projection effect and direction, and timely replacement is required.
· Lubrication system: Check the lubrication of motors and bearing seats to ensure sufficient lubricating oil/grease.
· Weekly/Monthly Maintenance
· Abrasive quantity: Check the abrasive stock in the storage hopper and replenish it in time to ensure cleaning efficiency.
· Transmission system: Check the tightness and wear of the hook running track, chain, or wire rope, and perform necessary lubrication and adjustment.
· Dust removal system: Clean or replace the dust collector filter element/filter bag, check whether the fan runs smoothly, and ensure the dust removal effect.
· Electrical system: Check whether each limit switch and electrical component works normally, and tighten loose wiring terminals.
Special Working Condition Solutions
In actual production, we often encounter special working conditions that place higher requirements on the equipment. The following custom hook-type shot blasting machine solutions can help you handle these challenges.
- Solution for Foundries with Large Amounts of Molding Sand
For foundries, workpieces often have a large amount of molding sand attached to the surface. This sand has high hardness and sharp edges. If it mixes with abrasive and circulates, it will act like an abrasive and sharply accelerate the wear of core components such as blades and guard plates, greatly increasing maintenance costs.
Solution: Add a rolling screen and magnetic separation device to the abrasive circulation system.
· Rolling screen: Uses the mesh aperture to screen out large sand lumps, sand blocks, casting flash, and other debris.
· Magnetic separator: Uses magnetic force to thoroughly separate ferromagnetic abrasives (such as steel shot and steel grit) from non-ferromagnetic molding sand.
Through this combination, only clean and qualified abrasive is returned to the shot blasting wheels for recycling, while molding sand is discharged as waste, effectively protecting the equipment and reducing the consumption of vulnerable parts.
- Solution for Secondary Contamination Prevention of Stainless Steel Products
When processing stainless steel workpieces, iron ion contamination must be prevented; otherwise, corrosion resistance will be reduced and rust will occur. Equipment parts made of ordinary carbon steel will introduce iron ions when in contact with abrasive and workpieces, causing secondary contamination.
Solution: Adopt a full stainless steel contact design.
All parts that have direct or indirect contact with abrasive and workpieces, including the guard plates on the inner wall of the blasting chamber, the distributor wheel and directional sleeve of the shot blasting wheel, and even the abrasive itself, are made of wear-resistant stainless steel.
This design eliminates the introduction of iron ions from the source, ensuring the surface purity of stainless steel workpieces after cleaning and meeting application scenarios with extremely high surface quality requirements.
- Single-Hook vs. Double-Hook Configuration
The single and double hook shot blasting machine is available in single-hook and double-hook configurations. For higher production volumes and batch processing requirements, the double-hook model is recommended, as it allows one workpiece to be loaded while another is being blasted, significantly improving throughput and operational efficiency.
- Explosion-Proof Solution for Aluminum Workpieces
When the workpieces are aluminum products, special attention must be paid to the risk of aluminum dust explosion. To prevent this hazard, the entire machine’s electrical components and dust collector must be designed with explosion-proof protection. The dust collector must be equipped with explosion-proof valves and other explosion-proof configurations to ensure safe operation. For such applications, an explosion-proof hook-type shot blasting machine for aluminum workpieces is the right choice.
If you are looking for reliable cleaning equipment that can handle complex working conditions, welcome to learn about our Q37 series hook-type shot blasting machine for foundries and auto parts manufacturing, specially designed for large workpieces that cannot be turned over. It can provide efficient and clean surface treatment solutions for your production.
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