RU1816522C - Device for cleaning internal surface of pipeline - Google Patents

Abstract

Usage: when cleaning sewer pipes. SUMMARY OF THE INVENTION: the device comprises a cylindrical nozzle with a head conical nozzle, nozzles and cuffs. One cuff is made of elastic material, the other in the form of leaf springs arranged in transverse rows. Each row of plates forms a part of the toroidal surface with through grooves. The plates in rows are staggered. The plates of each subsequent row overlap the grooves of the previous one. As the fluid exits through nozzles, the device moves forward along the pipe. An elastic sleeve guides the medium along the walls of the pipe. Leaf springs create microhydrodynamic shocks and provide complete cleaning of the pipeline surface. 2 s.p. f-ly, 4 ill.

Description

The invention relates to devices for cleaning the inner surface of a pipeline and can be used, for example, in public utilities when cleaning sewers from solid deposits.

The purpose of the invention is to increase the cleaning efficiency ..

In FIG. 1 shows a device in section in a working position; Fig. 2 shows a node for arranging the free ends of leaf springs; in Fig.Z - the same as an option; figure 4 - schematically the formation of the cavity in the parietal layer: view a-the beginning of the process, b - the end of the process of exposing caverns.

The device consists (see Fig. 1) of a cylindrical nozzle 1. connected by a flexible hose 2 to the working medium supply system. A nozzle 1 is connected to a head conical nozzle 3. immediately after which nozzles 4 are provided in the nozzle 1 in the form of holes in a cylindrical nozzle.

The nozzle is equipped with several rows of cuffs 5, having the form of a part of the torus of leaf springs located in transverse rows and forming a toroidal surface in each row. The external free ends of the springs 6 are bent outward. An elastic sealing cuff 7 is attached to the nozzle from the front of the plates. The device is placed in a pipe 8 to be cleaned of deposits 9. The outer free ends 6 of the cuff springs 5 are bent outward, as shown by way of example in FIGS. 2 and 3. They are bent can be both normal to the axial, and at some angle in one direction or another, depending on the design features. Figures 2 and 3 clearly show the checkerboard pattern of the placement of the bent ends. These bent ends and the special order of their placement create a system of labyrinth slits, the passage through which, water jets create a cavitation effect, which is the main factor of the eye (L

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protective effect. By changing the ratio of these elements, it is possible to affect the efficiency of the device. Usually this ratio is selected in a practical way.

The device (see Fig. 1) works as follows. It is inserted into the pipe 8 to be cleaned, a working medium, for example, water, is supplied through a flexible hose 2, Water passes through a cylindrical pipe 1 and exits through nozzles 4. When exiting, water meets a cone in the head part of nozzles 3 and is reflected the surface of the cone back. A certain inclination of the jet provides a reactive force, under the influence of which the device moves forward inside the pipe 8. Jet jets directed backward pass through slots formed by the free ends 6 of the cuffs 5. The presence of an elastic gasket 7 prevents these jets from passing in addition to the wall gap. Pass through the priest. the night gap, jets of water trap sediment particles, moving them back down the pipe, where they are sucked off.

In this way, continuous cleaning of the in-pipe deposits is carried out.

The parietal annular gap formed by the outer surface of the cuffs 5, as well as the protrusions of the free ends of the plates 6, are the primary sources of formation of jet vortices in cavities in a moving fluid, cavitation zones in the form of a band covering the device in its rear part. In the cavitation field, caverns 10 are created (see Fig. 4), the collapse of which is accompanied by the creation of hydraulic shock jets 11 or shock jets 12, acting on the hardened material of deposits 9

In the cavitation zone there are many microhydrodynamic shocks with very high pressure during the collapse of the caverns, providing intensive and complete cleansing of the surface.

The device reduces the cleaning time by increasing its efficiency.

FORMULA AND SECTION

Claims (3)

1. A device for cleaning the inner surface of pipelines comprising a cylindrical nozzle connected to the working medium supply system with a conical head nozzle and nozzles located directly behind the cone, made in the form of holes in the cylindrical nozzle, characterized in that, in order to increase the cleaning efficiency, it is provided an elastic cuff fixed to the nozzle behind the nozzle, and cuffs sequentially fixed to the nozzle in the form of leaf springs having the shape of a torus part, is located transverse rows and forming in each row a toroidal surface with through grooves located along the device, and the connection between the pipe and the fluid supply system is carried out using flexible hose. 2. The device according to claim 1, wherein the free ends of the leaf springs are made in the form of pads facing the periphery of the device and jointly forming flanges with through grooves. 3. Device pop. 1, characterized in that the plates and grooves in the rows are arranged in a checkerboard pattern with overlapping plates of each next row of grooves of the previous one. Compiled by Yu. Yukhnovich Editor L. Polionova Tehred M. Morgenthal Corrector N. Revska Order 1695 Mintage Subscription VNIIIPI of the State Committee for Inventions and Discover at the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Rauska nab .. 4/5