DEVICE FOR CLEANING OF INTERNAL SURFACE OF PIPES FROM DEPOSITS Russian patent published in 2009 - IPC B24C5/04 B08B9/04 

FIELD: technological processes.

SUBSTANCE: invention is related to the field of cleaning of internal pipe surfaces from preservation lubricant, corrosion, paraffin, different deposits, old paint and varnish coatings in different industry fields - petrochemical, gas, food, etc. Device comprises heat gas generator including combustion chamber installed with gap relative to body of heat gas generator, with nozzle and ignition element installed on the side of heat gas generator end wall, nozzle for outlet of high temperature has, at the outlet of which there is ejector installed with mixing chamber, as well as nozzle for air supply that communicates to gap between heat gas generator body and combustion chamber, nozzle for abrasive supply. Besides ejector has hollow tray for abrasive supply with cross section in the form of crescent installed along heat gas generator body and covering it, tray entry is coupled with nozzle of abrasive supply installed on the side of end wall of heat gas generator, and outlet is connected to ejector. Nozzle of air supply is also located on end side of heat gas generator.

EFFECT: reduced transversal dimensions of device and high quality cleaning of internal surfaces of small diametre pipes, with preservation of high performance parametres.

2 cl, 2 dwg