The main element of the shot blasting machine is abrasive particles in the form of fractions. Inside the machine, the shot is accelerated to 100 m / s. This flow is directed to the necessary part of the coating. This fraction beats off the old coating, which makes the base rough. After that, the fraction and exfoliated particles fall into the separator, which separates the garbage and the fraction. Trash falls into a special container, and the shot is returned back to the car.
Such a system allows the fraction to be used until its size becomes so small that the separator filters it with garbage. To ensure that the technology does not deteriorate, a new shot is constantly added to the shot blasting machine.
For each shot blasting machine, there are several suitable models of vacuum cleaners that differ in price, equipment, and filtration system. The surface that is being processed affects the choice of the necessary device.
If the base is made of stone and metal (some particles are knocked out), a vacuum cleaner with a power of 3 kW with a manual cleaning system is enough. In concrete, bead-blasting is stronger due to weak layers, concrete milk. This can lead to clogging of the filters, which is why the fraction cannot be used again. Therefore, to work with a concrete base, it is necessary to use a vacuum cleaner with an engine from 4 kW.
The regulation of cleaning depends on the convenience and price of the appliance. Manual cleaning involves constantly shaking the filter after 5-10 minutes, otherwise the operation of the vacuum cleaner worsens. Automatic cleaning is more convenient, the filters themselves are shaken by compressed air after a certain time. When carrying out bead-blasting operations with machines of different capacities, it is necessary to use an appropriate vacuum cleaner for each device. If the power of the vacuum cleaner is too large, it absorbs suitable particles of the fraction, which increases consumption.