Suction Blasting Cabinet
Suction Grit Blasting Cabinet is based on the Injection Suction principle of blasting. The industrial grit blast cabinet ensures non-stop working and no interruption in the blasting cycle. It is used for light and medium-size components/particles where the surface is to be cleaned or deburred or to provide a fine matte finish. Suction grit blasting cabinet runs on the Venturi law to get abrasive media from a non-pressurized storage tank to the blast gun where it is mixed with the compressed air stream and impelled against the work surface or blasting surface. Suction grit blast machines are clearly recognized by having two pipes (one for air and one for abrasive media) running to the blast gun.
If we are working with a suction-blast grit gun, it is easy to recognize, because it has two tubes attached to it, one providing compressed air and one vacuum pipe (abrasive blasting pipe) is bringing media into the gun. Pressure-blast grit nozzles have only one larger vessel to deliver a mixture of media particles and compressed air.
The suction grit blasting cabinet system uses the venture principle, integrating an air jet one-half the inside diameter of the sand blasting nozzle. This generates a negative pressure in the pipeline that sucks the abrasive media into the gun body from the media containing the tank. A suction grit blaster can operate continuously without shutdowns to refill abrasive media in the storage tank and can be simply operated with multiple guns over multiple bodies.
Suction grit blast cabinets provide the ideal cleaning, smoothening, and finishing solution to many coating, painting, and corrosion problems. They are ideally utilized for ensuring a decorative or generally pleasing surface finish across many materials. Suction systems generally have lower capital costs than a pressure cabinet and use less compressed air, making them appropriate for smaller workshops or lower production environments.
Continuous blasting is possible in a suction blasting cabinet because we need not think to refill the abrasive media containing hopper again and again in this, whereas in a pressure grit blasting arrangement the continuous blast time is decided by the amount of abrasive media present in the storage tank or pot present at one time.
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