SU366896A1 - INTERNAL PIPE SURFACE - Google Patents

Description

The invention relates to the field of mechanical cleaning of pipes from various deposits.

Devices are known for cleaning the inner surface of pipes, comprising a housing, a rotor mounted on it with the possibility of free rotation of a rotor with knives fixed on it, and nozzles for creating 1 directional movement of water.

However, these devices are not adapted to clean the inner surface of pipes inside which a central pipe of a smaller diameter or central rod (cable) passes, for example electrostatic precipitator pipes, inside which central rods - discharge electrodes pass. To clean the electrostatic precipitator tubes, it is necessary to disassemble the corona electrodes, which is a laborious operation that requires complicated adjustment.

The purpose of the invention is the possibility of cleaning the pipes with internal central rods without dismantling the latter, as well as improving the quality of cleaning. This is achieved by the fact that the body of the proposed device is made in the form of an open hollow ring of rectangular cross section, the rotor is formed by two split wheels, which are rotated in opposite directions by trays fixed to them, and knife guides installed with free movement under the action of centrifugal force, and the nozzles are placed in two rows along the generatrix of the body.

FIG. 1 shows the proposed device, a general view; in fig. 2 - its body, top view; in fig. 3 - rotor wheel.

The device comprises a housing 1, which is an open-ended hollow ring of rectangular cross section. On the case there are two rows of nozzles 2 and bearings 3 slidons. A rotor is mounted on the housing for free rotation. The latter consists of two split wheels 4 to 5, placed in bearings 3.

The rotor wheels have blades 5 and 7 and guides 5 and I in which loosening knives 10 and I are freely installed.

In the upper part of the housing there is a nozzle 12 for connecting with a hose 13 to a water line with a pressure of a barb and a hook 14 for a cable 15 used when moving the device along a vertical pipe 16 with a central rod 17.

The device works as follows.

To clean the pipe 16, the devices connected to the water line and fixed on the cable 15 combine the sections of the wheels 4 and 5 of the rotor with the opening of the housing 1 and insert the stem 17 of the pipe 16 into the split ring of the housing 1. Moving the mechanism along the vertical axis, insert it into the pipe sixteen.

After the water supply through the hose 13 wheels 4

3

and 5 under the action of water leaving the nozzles 2 on the blades 6 and 7, begin to rotate in opposite directions, which balances the reactive moments of the water jets and stabilizes the position of the device during its vertical movement. The knives under the action of centrifugal force begin to move in the guides 8 and 9 and, pressing the cutting edges to the surface of the pipe, remove the gaps. The water flowing from the blades 5 and 7 hits the walls of the pipe 16 and removes the loosened deposits.

After removing the deposits, the device is removed from the pipe 16 and, by aligning the cuts of the wheels and 5 with the body opening /, install the device for cleaning the next pipe in the order described above.

The device can be used both to clean the inner surface of pipes with or without central rods.

Subject invention

A device for cleaning the inner surface of pipes, comprising a housing, a rotor mounted thereon with the possibility of free rotation, with rotor blades fixed on it and nozzles for creating directional movement of water, characterized in that, in order to provide

cleaning pipes with inner central rods and improving the quality of cleaning; the casing is made in the form of an open hollow ring of rectangular cross section; the rotor is formed by two split wheels with

blades fixed on them and knife guides; mounted with the possibility of free movement by centrifugal force, the nozzles being placed in two rows along the generatrix of the body.

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