RU2203746C1 - Device for cleaning of pipeline internal cavity - Google Patents

Abstract

FIELD: devices for cleaning of hollow articles, for instance, internal surfaces of pipelines with the help of moving appliances and removal of deposits from pipeline cavities. SUBSTANCE: device has hollow body with pipe union for supply under pressure of working medium, jet head with jet nozzles and drive for reciprocation of nose mode with impeller connected with nose by means of crank mechanism; with possible engagement of impeller with the help of working medium through pressure window of pressure bushing. EFFECT: higher efficiency of cleaning. 3 cl, 5 dwg

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.

 A device for removing deposits from the cavity of the pipeline is known, see description to USSR copyright certificate 1484392, class. 08 08/04, 1987, 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 the removal of solid deposits, requiring significant mechanical forces. Insufficient reliability of the spool, its difficult adjustment.

 A device for cleaning the inner surface of the pipeline, described in the description of the copyright certificate of the USSR 578128, class. 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 slide valve 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. Of the above analogues, the closest is the device according to copyright certificate 578128, taken as a prototype.

 The technical result is an increase in the efficiency of cleaning the cavity and the inner surface of the pipeline from various types of deposits, both hard and soft, including cleaning the pipelines from the roots of trees and other types of vegetation that have sprouted inward.

 The technical result is achieved by the design of the claimed device, in which the reciprocating movement of the working tip is carried out using an impeller and a crank mechanism connected to it.

 The essence of the claimed device is illustrated by the accompanying drawings.

 Figure 1 shows a General view of the device in section; figure 2 - enlarged impeller (section aa), the crank pos. 18 in the lower position, the rod 8 is not shown; in FIG. 3 - the connection node of the connecting rod with the rod of the working tip (section along BB) is increased; figure 4 - replaceable working tip; figure 5 is a section along BB, enlarged.

 A device for cleaning the internal cavity of the pipeline contains a hollow body consisting of five parts connected to each other on the thread: a reaction head 1, a guide sleeve 2, a working sleeve 3, which may be cylindrical or square, nozzles 4 and nozzle 5. An impeller is placed in the housing 6, which can be either cylindrical or square, depending on the shape of the sleeve 3, the connecting rod 7 and the rod 8.

 A reaction chamber 1 is formed with a reaction chamber 9 with nose 10 and reaction nozzles 11. Axial holes 12 are made in the guide sleeve 2 for passage of the working agent into the reaction chamber 9 and a guide ring 13 of non-ferrous metal is installed.

 At the junction of the working sleeve 3 and the nozzle 4, detachable pins 14 for the axle axles 15 of the impeller 6 are freely dressed (Fig. 2), and longitudinal slots (not shown) for the axle axles 15 are made in the working sleeve 3 itself.

 In the nozzle 4, a pressure window 16 is made for the working agent to pass to the impeller 6. The pressure window 16 has the form of conjugate semicircles. This shape of the pressure window 16 provides a uniform and synchronous effect of the working agent on the entire working surface of the impeller 6.

 In the nozzle 5, a pressure chamber 17 is formed, which is connected to a pressure hose (not shown) screwed onto the nozzle 5.

 The impeller 6 is placed in the cavity of the working sleeve 3 and is made in the form of separate parts 22, 23 with a through slot for the crank 18, mounted on a finger 19, connecting the parts 22, 23 of the impeller 6. The crank 18 is movably connected to the connecting rod 7, forming a connecting rod-crank mechanism . The connecting rod 7, in turn, with the help of the axis 20 is movably connected to the rod 8. The rod 8 has the possibility of reciprocating movement in the guide rings 13 of the guide sleeve 2 and the reaction head 1. At the end of the rod 8, a thread is made for connection with the working tip 21 ( figure 4).

 The working tip 21 is removable, may take the form of a chisel, a double-sided saw, a ruff, a tooth grip, etc. The impeller 6 with a connecting rod-crank mechanism forms a drive for the reciprocating movement of the working tip 21.

 The claimed device for cleaning the cavity and the inner surface of the pipeline works as follows.

 The working agent (water, air, steam, etc.) under pressure through a flexible hose (not shown) is fed into the pressure chamber 17 of the nozzle 5 and through the pressure window 16 to the impeller 6. At the same time, the working agent fills the internal cavity of the working sleeve 3, through axial holes 12 penetrates into the reaction chamber 9.

 Under the influence of the pressure of the working agent on the impeller 6, the latter is brought into rotation, which, by means of the crank 18, the connecting rod 7 turns into the reciprocating movement of the rod 8 and the working tip 21 connected to it.

 By impacts of the working tip 21, solid deposits are destroyed in the cavity of the pipeline being cleaned and at the same time these deposits are eroded by the nasal jets of the working agent flowing out under pressure from the nasal nozzles 10. The destroyed and washed-out deposits by the reactive jets of the working agent flowing through the jet nozzles 11 are driven back to the pipeline being cleaned. As the destruction and removal of deposits, the device moves forward through the cleaned pipeline due to jet propulsion created by jet jets from nozzles 11.

 Depending on the nature and type of deposits in the pipe being cleaned, an appropriate replaceable tip 21 is used. If the pipe being cleaned is clogged with fibrous objects, for example, rags, they are removed using the teeth of the working tip 21, in which case the device is pulled from the pipe by the hose.

 If the pipeline being cleaned has sprouted roots, for example, of trees, then the working tip 21 is used in the form of a saw with two-sided teeth, which saw the roots during the reciprocating movement of the rod 8. If there is deposits on the surface of the inner walls of the pipeline being cleaned, then these deposits are cleaned with the working tip 21 when oscillatory movement of the device in the cleaned pipeline from the pressure of the working agent and jet jets. If necessary, the working tip 21 is used in the form of a ruff.

 The claimed device allows you to destroy and remove various types and nature of fractions and deposits both in the cavity of the cleaned pipeline and on the inner surface of its walls.

 To do this, the reciprocating working tip is given a reciprocating movement of high power and oscillation frequency with the help of a crank mechanism, which is eccentrically connected to the impeller driven by the pressure of the working agent.

 Destructible deposits were simultaneously exposed by the nasal axial jets of the working agent and the oscillatory translational movement of the device itself with the help of jet thrust created by jet jets.

 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 impeller used in the claimed device does not require a reverse; the opportunity has been created to obtain a high speed of rotation of the impeller and the development of high power and frequency of movements of the working replaceable tip.

 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-inactive sewer pipelines.

Claims (3)

 1. A device for cleaning the internal cavity of the pipeline, containing a hollow body with a fitting for supplying a working agent under pressure, a reaction head with jet nozzles and a reciprocating drive of the working tip, characterized in that the drive for reciprocating movement of the working tip is made in the form the impeller connected to the working tip using a crank mechanism with the possibility of exposure to the impeller by the working agent through the pressure window of the pressure sleeve.  2. The device according to p. 1, characterized in that the impeller is made in the form of separate parts mounted in the cavity of the working sleeve on the axles and connected to each other by a crank finger, and the pressure window of the pressure chamber has the form of paired semicircles with the possibility of uniform and synchronous impact working agent for the entire working area of both parts of the impeller.  3. The device according to p. 1, characterized in that in its jet head there are made nasal nozzles with the possibility of directing the jet of the working agent into the zone of sediment destruction with a replaceable working tip.

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