DEVICE FOR HYDROCAVITATIONAL CLEANING OF SURFACES Russian patent published in 1998 - IPC

FIELD: hydrocavitational cleaning of surfaces. SUBSTANCE: device has housing with straight tubular header for delivery of working fluid and row of injectors evenly mounted in header wall; injector has axial cylindrical passage and sharp edge in outlet flow section for excitation of cavitation process. Besides that, device is provided with box-shaped casing secured to housing for mutual vertical motion; box-shaped casing has open bottom and is provided with rollers projecting beyond surface. Rollers are mounted for rotation in housing on either side from headers; axes of rotation are parallel to its longitudinal axis. Each injector consists of two members with threaded joint one member is rigidly secured to wall of header; outlet flow section of injector in other member is made in form of slotted diffuser nozzle whose width is lesser than radius of axial cylindrical passage engageable with it. One wall of slotted nozzle is located tangentially relative to its inner surface; all slotted nozzles are oriented in parallel relative to each other at acute angle to longitudinal axis of header which ranges from 15 to 30 deg. EFFECT: reduced power requirements. 3 cl, 5 dwg