DEVICE FOR COATING A SURFACE OF BED WITH ANTI-FILTERING BREADTH Russian patent published in 1995 - IPC

FIELD: hydraulic structures. SUBSTANCE: device is made in the form of self-moving horizontal platform with gas-jet equipment to clear bed from depositions. Clearing mechanism has infinite chain with brushes and drive trolleys installed on support rails in the front part of platform 4. Device has also a water pump, barrels with breadth installed in the middle part and on sides of the platform, mechanisms to impregnate the breadth with glue material, tanks glue composition, and pressing down mechanism. Mechanisms to impregnate breadth, based on principle of pressure drop generated on different sides of the breadth, have removable members (shafts) with length, step, and relief profile of which are made on the base of strength, breadth porosity, and viscosity of glue composition and complete width to impregnate the breadth. Pressing down mechanism is made in the form of drive trolleys suspended from support rails in the front and end platform parts. Telescopic rods connected from beneath with groups of perforated pipelines, as well as telescopic members connected to water pump are secured to the trolleys so to change slope to platform plane. Sensor to detect channel bed depth is installed in the bottom of each rod and telescopic boom of the gas jet device. The sensor is connected to control input of drive secured on the platform. Horizontal position of the platform is provided with power unit on each moving support with a drive to rise the platform. Control for operation of individual mechanisms and the entire device is carried out using control panel installed on the platform. EFFECT: anti-filtering effect. 2 cl, 10 dwg