Method for Cleaning Using Particles of a Solid Cryogenic Substance and Device for the Implementation Thereof

An apparatus for cleaning with solid cryogenic substance comprising:

• a hopper to store pellets of solid cryogenic substance;
• a crusher for pellets of solid cryogenic substance made to allow cutting the said pellets of solid cryogenic substance;
• a feeding unit made to allow transporting crushed pellets of solid cryogenic substance into compressed air stream;
• a nozzle to blast crushed pellets of solid cryogenic substance on the object to be cleaned;
• and
• a pneumatic line to transport crushed pellets of solid cryogenic substance from the said feeding unit to the said nozzle;
• wherein the said crusher comprises:
• a body of the crusher;
• a stationary cutter die made with at least one stationary cutter and secured on the said body of the crusher,
• a rotating cutter die made to allow the rotation about its axis and made in the form of at least one cutter with cutting edge;
• and a flat throughput die located in the said body of the crusher in the plane that is parallel to the plane of the rotating cutter die;
• wherein the said rotating cutter die is located between the mounting plane of the said stationary cutter die and the mounting plane of the said flat throughput die, and is parallel to the plane of the said stationary cutter die,
• wherein the stationary cutter die is located relative to the flat throughput die at a distance that determines the size of crushed pellets of solid cryogenic substance,
• a flat throughput die made with multiple through holes made to allow holding the pellets of solid cryogenic substance with a size that exceeds the one specified for cleaning, when cutting the said pellets in the plane defined by the contact between the flat throughput die and the rotating cutter die and subsequently letting through the crushed pellets of solid cryogenic substance with the size specified for cleaning.