METHOD FOR FEEDING BULK SOLID CRYOGENIC SUBSTANCE INTO COMPRESSED AIR STREAM AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC B24C3/02 B24C1/00 B24C5/00 B24C7/00 B24C9/00 

FIELD: cleaning.

SUBSTANCE: invention relates to a device for cleaning surfaces from contamination. The device is made with the possibility of feeding granules of solid cryogenic substances from the hopper into the compressed gas stream. The device contains a housing made with inlet and outlet channels for the compressed air flow. The bottom seal is hermetically sealed in the body. The portion shaft is installed in the lower seal and is rotatable. The portion shaft is provided with a peripheral surface in which a plurality of spaced slots is formed. A through longitudinal channel is made in the lower seal, made with possibility of ensuring unobstructed flow of compressed air along the portion shaft from the inlet channel to the outlet channel, ensuring that granules of solid cryogenic substances are washed out of the slots of the portion shaft due to the vortex motion of compressed air. The through longitudinal channel is bounded at the bottom by the housing and at the sides by the lower seal, and at the top by the portion shaft. The inlet channel is made in such a way that the axis of the inlet channel is located perpendicular to the axis of the through longitudinal channel of the lower seal and is offset relative to the axis of the through longitudinal channel along the vertical plane.

EFFECT: increased reliability and productivity of the dry ice cleaning process.

15 cl, 12 dwg