RU43201U1 - DEVICE FOR CLEANING THE INTERNAL CAVITY OF THE PIPELINE - Google Patents

Abstract

The proposal relates to devices for cleaning hollow products, for example, pipelines from the inside using moving tools and remove deposits from the cavity of the pipelines. The objective of the proposal is to increase the productivity and reliability of the device. The technical result is an increase in the number of revolutions per unit time without increasing the consumption of the working agent. The device consists of a housing 1 with a reaction chamber 2 and reactive rear nozzles 3, a turbine chamber 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, building 1. Device contains a shaft 8 on the front of which a tip 9 is installed with cutting edges 10. Two blades 11, 12 are rigidly fixed to the shaft 8 of the turbine chamber 4, the blades are welded to the shaft and deployed crosswise in relation to each other. A fitting 13 is screwed onto the turbine chamber 4 for connection with a working agent supply hose. The tip 9 is made in the form of a replaceable 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. 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. Device especially

effective for cleaning heavily clogged, unused and overgrown sewers for a long time. On the claimed device made working drawings, made and tested a prototype. Tests have shown high efficiency in cleaning long-inactive sewer pipelines. Shaft revolutions, as well as productivity increased by 25-30%. The device can operate at a pressure of the working agent from 6 to 150 atm.

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. 148 43 92, Cl. 08 V 9/04, 1967, containing a complete housing 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. 08 08/04, 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.

A known device for cleaning the inner surface of the pipeline contains a tip with cutting edges mounted on a hollow shaft, on which behind the tip there are respectively reactive and turbine chambers, the last 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 11c 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 into 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 area 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 is taken as the closest analogue to the prototype. See invention of the USSR AS No. 1768336 V 08 V 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.

For these reasons, the device is inefficient and unreliable in operation.

The objective of the utility model is to increase the productivity and reliability of the device.

The technical result is an increase in the number of revolutions of the shaft per unit time without increasing the consumption of the working agent.

This is achieved by new technical solutions that are in a causal relationship with the technical result.

The essence of the claimed utility model is expressed in the aggregate of the following essential features.

In the already known device for cleaning the internal cavity of the pipeline, containing a tip with cutting edges mounted on the shaft, as well as a jet and turbine chamber, the turbine chamber having end walls with openings for the passage of the working agent, the following signs are distinguishing from the prototype:

in the turbine chamber, two blades are installed on the shaft, which are spaced apart crosswise within 90 ° with respect to each other.

The above set of essential features in comparison with the prior art allows us to conclude that the proposed technical solution meets the criterion of "novelty." Figure 1 shows a General view of the proposed device schematically in longitudinal section.

Figure 2 is a view along aa of the shaft with the blades mounted on it, pos. 11, 12, the remaining parts of the device are not conventionally shown.

The proposed device consists of the following main components and parts:

Housings 1 with a jet chamber 2 and jet rear nozzles 3, a turbine chamber 4, with end walls 5 and 6 in which there are

holes 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 °.

A fitting 13 is screwed onto the turbine chamber 4 for connection with a hose (not shown) for supplying 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 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 is connected with a fitting 13 to the supply hose of a working agent, for example, water.

The device operates as follows.

The working agent (water, air, steam, etc.) under pressure from the nozzle 13 through the holes 7 enters the turbine chamber 4 on the blades 11, 12 causing the shaft 8 and the connected tip 9 to rotate. Next, the working agent is pressurized through holes 7 enters the reactive chamber 2. Breaking out through the reactive rear nozzles 3, the working agent creates reactive thrust and propels the device forward.

With a high speed of rotation of the shaft 8 and the tip 9, the entire device acquires centrifugal force and moves in a spiral. The rotating tip 9 with its cutting edges 10 separates hard and dense deposits, and the working agent flowing out at high speed and under high pressure from the jet nozzles erodes the destroyed deposits which are driven away by jet streams and transported through the pipe being cleaned.

Compared with similar devices for cleaning pipelines, the claimed device does not have "capricious" spools with their reversibility for the reciprocating 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, made and tested a prototype. Tests have shown high efficiency in cleaning long-inactive sewer pipelines. The shaft speed at the previous consumption of the working agent, as well as productivity increased by 25-30%.

The device operates in a wide pressure range from 6 to 150 atm.

Claims (2)

1. A device for cleaning the internal cavity of the pipeline, containing a tip with cutting edges mounted on the shaft, as well as a jet and turbine chambers, the turbine chamber having end walls with openings for the passage of the working agent, characterized in that the turbine chamber is mounted on said shaft two blades. 2. The device according to claim 1, characterized in that the blades are mounted on the shaft with respect to each other crosswise.