RU77803U1 - DEVICE FOR CLEANING THE INTERNAL CAVITY OF THE PIPELINE - Google Patents

Abstract

The utility model relates to devices for cleaning hollow products, for example, pipelines from the inside using moving tools and removing deposits from the cavity of the pipeline, which improves productivity, durability, reliability, and increases the period of trouble-free operation of the device. The device consists of a tip with cutting edges mounted on the shaft, contains a jet, turbine, pressure chambers, a device for rotating the shaft, a pipe for supplying a working agent, for example, water, rolling bearings. A spiral groove is made on the shaft along its surface to throw it out and to prevent the ingress of liquid and solid fractions from the pipe cavity being cleaned into the rolling bearings on which the shaft is mounted. Item P.F. - 1, ill. - one.

Description

The invention relates to devices for cleaning hollow products, for example, pipelines from the inside using moving tools and removing deposits from the cavity of the pipelines.

The “Device for removing deposits from the cavity of the pipeline” is known, see description to USSR copyright certificate No. 1484392, Cl. B08B 9/04, 1967, containing a hollow body with a nozzle for the working agent and an annular cavity with an elastic outer wall mounted in the housing along its axis with the possibility of reciprocating movement of the spool.

This “Device” does not provide for the removal of solid deposits, requiring significant mechanical forces. Insufficient reliability of the spool, difficult adjustment.

It is known "Device for cleaning the inner surface of the pipeline", described in the description of the author's certificate of the USSR No. 578123, Cl. BVB 9/04, 1977, made in the form of nozzles with jet nozzles, having a smaller diameter tip with side and central nozzles. To increase the cleaning efficiency, the “device” is equipped with a spool made in the form of a perforated sleeve and located inside the nozzle. The applied axial impacts by the tip do not have sufficient force to destroy deposits in the pipe due to the need to reverse the spool by transferring the working fluid to its opposite cavities.

With a small length of movement of the spool, the tip does not have time to acquire sufficient energy. Spool adjustment is difficult and its operation is not reliable enough.

The known device for cleaning the inner surface of the pipeline contains a tip with cutting edges mounted on a hollow shaft, on which a jet and a turbine chamber are located behind the tip, the latter of which has end walls with an axial hole for passage of the shaft and means for supplying a working medium connected to the turbine chamber . The device includes a housing 1 with rear jet nozzles 2. A sleeve 3 is connected to the housing 1 on the thread, into which the washers 4 and 5 are screwed to form a turbine chamber 6. A pin 7 is screwed onto the sleeve 3 for connection with the working agent supply hose. Inside the device there is a hollow shaft 8 on which the blades of the turbine 9 and the support ring 10 are rigidly fixed. A tip 11 with cutting edges is mounted on the front of the hollow shaft 8 on the thread.

The device is equipped with an ejector nozzle 12 installed by its output nozzle in the axial hole of the washer 5 of the end wall from the supply side of the working agent. The ejector nozzle 12 is located coaxially with the hollow shaft 8 and is in communication with its internal cavity (channel) 13. In the washers 4 and 5, which are the end walls of the turbine chamber 6, holes 14 are made for the directed supply of the working agent, respectively, to the blades of the turbine 9 and to the reactive the chamber 15 formed by the cavity of the housing 1. The washer 4 is simultaneously the end wall of the turbine 6, and the reactive 15 chambers.

The tip 11 is made in the form of a replaceable head. Depending on the nature of the state and content of deposits in the cavity and on the inner surface of the pipeline, corresponding cutting elements are installed on the tip 11. A replaceable head, the front part of which has an end mill 16 for destroying solid deposits in the pipe cavity, conical spiral knives 18 with a lateral cutting edge are fixed on the beam brackets 17 of the head

additional destruction of sediments and their transportation to the zone of action of jet jets.

The tip 11, made in the form of a figured knife, the blades 19 of which are S-shaped with a bend in the middle part to obtain a longer cut line. Such a replaceable head is most effective for destroying loose and porous deposits, it has end and side cutting edges. But each interchangeable head of the tip 11 is certainly equipped with an eccentric vibrator 20 to give the device during its operation movement along a conical and cylindrical spiral when cleaning pipelines of different diameters.

The eccentric vibrator 20 is rigidly connected to the body of the tip 11. The hollow shaft 8 is made with an axial channel 13 for supplying a working agent to the zone of action of the cutting elements of the tip 1 for erosion of destructible deposits. On the back of the hollow shaft 8, a turbine 9 is rigidly mounted, the curly blades of which are in the form of a screw spiral. The hollow shaft 8 is mounted to rotate around its axis, its longitudinal movement is limited by the support ring 10 and the support socket of the washer 5.

The device is equipped with an ejector nozzle 12 installed by its output nozzle in the axial hole of the end wall (washer) 5 from the supply side of the working agent.

To perform work on cleaning the inner surface of the pipeline, the device using the nozzle 7 is connected to the supply hose of the working agent.

This device see

invention of the USSR A.S.No. 1768336 V08V 9/14.

The main disadvantages of the device is the presence on the shaft in the turbine chamber of the screw. The screw cannot develop a large number of revolutions. The shaft has a longitudinal channel for supplying a working agent. During operation, the shaft constantly bends and fails.

A working agent, such as water, is supplied to the rear of the turbine chamber.

The turbine blades are screw-shaped. Water passing through the turbine chamber, rotating the turbine, pushes it forward. The turbine shaft rotates on radial bearings or bushings. With an increase in the supply of water to the turbine, the longitudinal force on the shaft increases, which leads to rapid wear of the support sleeves and radial bearings. For these reasons, the device is difficult structurally inefficient and unreliable in operation.

Known device (see RF patent for utility model No. 43201)

consists of the following main components and parts:

Housings 1 with a reaction chamber 2 and jet rear nozzles 3, a turbine chamber 4, with end walls 5 and 6 in which there are openings 7 for the directed supply of the working agent to the blades 11, 12 and into the reaction chamber 2 of the housing 1.

The device comprises a shaft 8 on the front of which a tip 9 with cutting edges 10 is mounted. Two blades 11, 12 are rigidly fixed to the shaft 8 in the turbine chamber 4, the blades are welded to the shaft and deployed crosswise to each other at an angle of 90 °.

The turbine chamber 4 has a fitting 13 for connection with a supply hose of the working agent.

The tip 9 is made in the form of a replaceable screw head.

The device has the following disadvantages:

- not reliable in operation since jet nozzles are located in the front part in the jet chamber; therefore, the device is diverted into the fracture of the pipe being cleaned;

- it is difficult constructively since has a jet, turbine and pressure chamber;

- when working at high pressures of the working agent over 25 atm, the water stream feeds forward and seizes the shaft in the sleeve of the turbine chamber.

A device for cleaning the internal cavity of the pipeline, see patent R.F. No. 46687 for utility model 7 MKI V08V 9/02. Bull. No. 21 dated 07/27/05.

The device consists of the following main components and parts:

Cases 1 with a reaction chamber 2 and jet nozzles 3, a turbine chamber 4, with a side wall 5 and a flange 6, in the wall 5 there are openings 7 for the directed supply of the working agent to the blades 11 and into the reaction chamber 2 of the housing 1. The turbine chamber is made in the form hollow cylinder and mounted inside the pressure chamber. The pressure chamber 12 is screwed onto the flange of the turbine chamber to form a cavity 17 for the working agent.

The device comprises a shaft 8 on the front of which a tip 9 with cutting edges 10 is mounted, on the shaft 8 in the turbine chamber 4 there are blades 11 made on the shaft along its axis of rotation.

At the end of the pressure chamber 12 there is a pin 13 for connection to the supply hose of the working agent.

The tip 9 is made in the form of a replaceable screw head. Depending on the nature, condition and content of deposits in the cavity, an appropriate tip can be installed on the inner surface of the pipeline. The shaft 8 is installed in the sleeve 16.

To perform work on cleaning the internal cavity of the pipeline, the device is connected with a fitting 13 to the supply hose of a working agent, for example, water.

This device is taken as the closest analogue prototype.

The device has the following disadvantages:

When the device is operating, the shaft rotates at a speed of 15-20 thousand rpm. Between the sleeve 16 and the shaft, some of the fractions that are in the pipe being cleaned, as well as liquid, get to the sleeve, which quickly deteriorates and stops working.

devices for repair work and for replacing worn bushings.

The task and the technical result are to increase the durability, reliability and increase the period of trouble-free operation of the device.

This is achieved by a combination of essential features that are causally related to the technical result.

To achieve the specified technical result in the proposed device for cleaning the internal cavity of the pipeline (hereinafter referred to as the device) containing a tip with cutting edges mounted on the shaft, a jet, turbine and pressure chamber, a device for rotating the shaft and a pipe for supplying a working agent, for example, water distinctive from prototype sign is that on the specified shaft on its surface is made of a spiral groove that works like a screw, effectively discarding and preventing the ingress of liquid and solid fractions from the cleaned cavity of the pipeline in the rolling bearings, on which the shaft is installed instead of quickly wearing bushings as is done in the prototype.

The definition of the prototype as the closest analogue made it possible to identify a set of features essential in relation to the technical result in the claimed device, which are set forth in the formula.

Therefore, the claimed utility model meets the criterion of "novelty" under current law.

The search result shows that the claimed utility model does not follow explicitly from the prior art for the specialist, since the transformations prescribed by this utility model are not identified, characterized by distinctive from the prototype

significant features aimed at achieving a technical result.

Figure 1 is a General view of a device for cleaning the internal cavity of the pipeline, a longitudinal section, schematically.

The positions in figure 1 denote: 1 - tip; 2 - cutting edges of the tip; 3 - shaft; 4 - rolling bearings; 5 - a reaction chamber; 6 - holes emerging from the jet chamber; 7 - turbine chamber; 8 - a device for rotating the shaft; 9 - pressure chamber; 10 - pipe; 11 - holes for supplying water under pressure to the device for rotating the shaft; 12 - jet nozzles; 13 - washer; 14 - a neck of a shaft; 15 - spiral groove.

The device has the following performance.

The tip 1 with cutting edges 2 is screwed onto the shaft 3. The shaft and its neck 14 are mounted on rolling bearings 4. The bearings are pressed by washers 13.

The turbine chamber 7 is made in the form of a hollow cylinder, onto which a reaction chamber 5 with screw holes is screwed 6. A pressure chamber 9 with reaction nozzles 12, with a nozzle 10 is screwed onto the turbine chamber 7.

In the turbine chamber there is a device 8 for rotating the shaft 3.

A spiral groove 15 is made on the shaft.

The device 8 can be made in the form of blades, helical gears, screws (not shown in Fig.) Or have a different design.

The tip 1 is made in the form of a replaceable screw head.

Depending on the nature, condition and content of deposits in the cavity and on the inner surface of the pipeline, an appropriate tip can be installed.

To perform work on cleaning the internal cavity of the pipeline, the device connects with a fitting (not shown) screwed on the thread of the pipe 10 to the supply hose of the working agent.

The device operates as follows.

The working agent (water, air, steam, etc.) under pressure from the nozzle 10 enters the pressure chamber 9, through the holes 11 it enters the turbine chamber 7 to the device 8, turning the shaft 3 and the connected tip 1 into rotation. through the jet nozzle 12, the working agent creates a jet thrust and propels the device forward. Next, the working agent enters the reactive chamber 5, flowing out through the holes 6 erodes the destroyed deposits rotating with a high speed tip 1.

The shaft 1 during operation of the device rotates at a high speed of 15-20 thousand rpm, the spiral groove 15 works like a screw, effectively throws out and prevents the ingress of liquid and solid fractions, such as sand, from the pipe cavity being cleaned into the rolling bearings of the device. The spiral groove made on the shaft and the rolling bearings on which the shaft is mounted are absent in the above analogues on utility patents of the Russian Federation No. 211154, 43201, this explains the increase in durability, reliability and increase the period of trouble-free operation of the device as a technical result.

Compared with similar devices for cleaning pipelines, the claimed device does not have "capricious" spools with reversibility for the movement of the working tip, with the need to remove it from the "dead" position and the associated loss of power.

The claimed device can be used for cleaning underground and surface sewers and other piping systems for cleaning pipes from soot, scale and other deposits. The device is especially effective for cleaning heavily clogged, unused and overgrown sewers for a long time.

On the claimed device made working drawings, manufactured and tested prototype. Tests have shown high efficiency in cleaning long-term inactive sewer pipelines. Productivity increased by 5% increased reliability, durability, increased the period of trouble-free operation of the device.

The device operates in a wide pressure range from 6 to 200 atm.

Claims (1)

A device for cleaning the internal cavity of the pipeline containing a tip with cutting edges mounted on the shaft, a jet, turbine and pressure chamber, a device for rotating the shaft and a pipe for supplying a working agent, for example water, characterized in that the said shaft is helical on its shaft a groove that throws out and prevents the ingress of liquid and solid fractions from the pipe cavity being cleaned into the rolling bearings on which the shaft is mounted.