Sand residues: an obstacle to be removed with sandblasting vacuums
Sandblasting is a widely used process in industry. It is used to clean, smooth or prepare the surfaces of metals and other materials. During this work, a jet of air and sand hits the workpiece and removes the surface layer. It is a quick and effective operation, but it creates a lot of residue.
Sand settles everywhere: on the floor, in booths, and in the smallest spaces of treated parts. This is why it is essential to use a good sandblasting vacuum cleaner that can suck up heavy sand and abrasives effortlessly. DUPUY has been developing solutions dedicated precisely to sand suction in industrial processing for years.

What is sandblasting and why is a dedicated vacuum cleaner needed?
Blasting uses a stream of compressed air and abrasives to wear away the surface layer of a material. This process can be used to:
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eliminate rust and impurities
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prepare parts for painting
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obtain a uniform surface
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clean materials of various shapes and sizes
During processing, sand tends to break up into fine powder. To keep the environment clean and to recover some of the material, good sand vacuuming is essential.
The speed of blasting depends on the type of material being treated. On hard metals it may be necessary to use more aggressive abrasives or smaller nozzles to increase the force of the jet.
What abrasives are used for sandblasting?
There are many types of abrasives. The most widely used are:
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glass or ceramic microspheres
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ceramic grit
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corundum
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plastic grit
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metal or stainless steel grit
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corn cob
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vegetable shells
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ecological sands
Sizes vary between 1.5 mm and 0.250 mm. The choice depends on the type of surface: metal, steel, wood, marble or ceramic.
Types of sandblasting
Blasting can be:
1. Conventional blasting (free jet)
This is the simplest method. The abrasive is pushed out of a pressure tank along with compressed air.
There are no systems to contain the dust or recover the sand.

2. Closed-loop sandblasting
That is, with equipment for transporting and recovering sands, which can take place in:
o Manually controlled sandblasting booths, with the operator placed outside to direct the jet through guns, with no release of dust into the work environment.

o Tunnel blasting machine, which can adapt to objects with different shapes and is suitable for processing medium and large parts.

These machines operate only with the door closed so as to prevent dust from escaping.
Existing regulations: what do they provide?
At the end of blasting, the operator must clean the parts and the work area.
Regulations prohibit air blowing for various reasons:
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raises dust hazardous to health
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Can launch grit at high speed
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increases the risk of injury
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Worsens the air quality in the department
Therefore, cleaning must be done with high-pressure industrial vacuum cleaners. They are the only tools that can safely suck up heavy sand and abrasive residues.
Vacuum sand and speed up your work with a DUPUY sandblasting vacuum cleaner
DUPUY offers several models designed for quick and effective sand removal.
M 50 HV: maximum suction force
TheM50 HV is one of the best sandblasting vacuum cleaners from DUPUY.
Main features:
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4.3 kW of power
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5,100 mm/H2O of depression
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double-stage side channel blower
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aluminum structure
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reinforced suction chamber
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20,000-cm2 pocket filter (L-class)
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cartridge filters with automatic cleaning (optional)
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quick exhaust with butterfly valve
It is the ideal solution for those who need to vacuum large amounts of sand and grit.


W3 HV: compact and powerful
The W3 HV is designed for those with lighter needs or smaller spaces.
Offers:
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3 single-phase motors
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3.9 kW of power
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3,600 mm/H2O depression
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Small footprint and great maneuverability

It is a perfect vacuum cleaner for quick operations and for removing small amounts of sand.
Centralized systems: SILOFILTER and CVAC
For large plants or continuous production, DUPUY designs centralized vacuum systems:
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SILOFILTER Filter Silos
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CVAC central vacuum cleaners
These systems allow:
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sand suction from long distance
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automatic discharge of abrasives
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large volume management
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advanced dust filtration
Each plant is custom-designed according to the company’s needs.

Why choose a DUPUY sandblasting vacuum cleaner?
Purchasing a DUPUY vacuum cleaner means:
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choose from many powers and configurations
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Have access to a full range of accessories
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achieve a robust and durable system
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reduce machine downtime
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improve the quality of the finish
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work in greater security
Do you want to improve sand suction in your company?
Fill out the form and request a free consultation-we will help you choose the right sandblasting vacuum cleaner for your needs.