DE2064410A1 - Device for removing blockages in pipelines and for reim conditions of pipelines, in particular from gas lines - Google Patents

Description

Nils Osten Aström Skattegardsvägen 113

Device for removing blockages in pipelines and for cleaning pipelines, in particular exhaust pipes

The invention relates to a device for removing Blockages in pipelines and for cleaning pipelines, especially exhaust pipes.

The task of exhaust pipes, in particular exhaust pipes in boilers and the like., free of deposits, for example in the form of soot and the like has long been a serious and difficult problem. Such deposits cause firstly that the flow cross-section of the line is reduced, so that the precalculated exhaust gas flow can no longer be maintained, with such deposits, secondly, also the heat transfer through affect the pipe or conduit walls, whereby the efficiency of the heating system is reduced. For this

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Basically, it is necessary to put the heating system or the heating device out of operation at relatively short intervals for a long time in order to scrape the lines or pipes clean and to process the pipe or line walls that have come into contact with the heating gases to the best possible extent, in order to obtain a free flow cross-section and to ensure optimal heat transfer through the line or pipe walls. While it is relatively easy to remove the clogging deposits from the Rohrbzw. In peeling off conduit walls, there is considerable difficulty in removing these peeled debris, including soot. The deposits are usually removed by scraping the inside of the pipes or lines with suitable tools or using compressed air. When using compressed air there is the disadvantage that the environment is heavily polluted, both during the actual cleaning work and nooh afterwards. For this reason, the invention is based on the object of creating a device with which a simple removal of the detached deposits is possible without the environment being contaminated.

The device according to the invention is used to achieve this object characterized in that it is provided with a suction line which can be introduced into the pipelines, at which a motor-driven tool is arranged at the front end of the mouth for processing or cleaning the pipe walls is, while the other end of the suction line to a dust collector is connected to which the particles detached from the pipe walls during operation of the tool through the suction line can be fed in, and that the motor for driving the work is a compressed air motor, the compressed air outlet of which in the direction of the low pressure source in the suction line flows out

The invention is described below with reference to the enclosed

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Drawing, in which a possible embodiment in exemplary Way is represented, described in more detail. Is show »

1 shows the invention in a perspective representation Device for removing blockages in pipelines and for cleaning pipelines, instes special Abgsä.leitungen, with a suction line introduced into such a pipeline, at the front Muzzle end a tool for processing or cleaning the pipe walls is arranged, and

Fig. 2 in longitudinal section and in an enlarged view the Mouth section of the suction line which can be introduced into a line to be cleaned with in the mouth section the 'suction line arranged air motor and a tool protruding from the mouth section for processing the ceilings walls o

The device according to the invention consists essentially of a suction line that is pneumatically driven Motor cooperates, which is used to drive a cleaning tool, the cleaning tool in the pipeline detached particles or particles are sucked into the suction line and fed to a collecting container in which these particles are separated from the suction air and collected.

In Pig · 1 are of a boiler or the like. the pipe openings 10 represented by gas pipes, for example. In the drawing, one of these tubes is partially in section at one end shown to show a rigid suction line 11 inserted into this pipe 11, the one inserted into the pipe 11 At the end of 15 it had a considerably larger durometer than that Suction line 12 even this end 13 forms a suction head, whose diameter is slightly smaller than the inner diameter of the gas pipe 11

According to Pig. 2 is coaxially in the suction head 15 a compressed air

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motor 14 mounted, which has such dimensions that between the inner wall of the suction head 13 and the compressed air motor 14 an annular gap 15 remains free. To the (not shown) Motor shaft, the shaft 16 of a tool protruding from the suction head 13 is screwed or otherwise fastened; According to the exemplary embodiment shown, this tool is a rotating brush 17 »which is representative is for all tools that are suitable for cleaning the inner walls of pipes 11 or the like. The bristles that The brushes shown are arranged around the tool shaft 16 in a substantially helical manner. The direction the helical line formed by the bristles of the brush 17 and the tightening direction of a possible screw connection between the motor shaft and the tool shank 16 preferably match the direction of rotation of the motor 14. However, under certain circumstances it can also be be liable, the helical line formed by the bristles run in the opposite direction to the direction of rotation of the compressed air motor 14 allow.

According to Pig. 2, a compressed air line 18, which is connected to the motor 14, extends through the suction line 12, to supply the motor with compressed air, i.e. drive air, in the manner described below.

The motor 14 is constructed and mounted in such a way that the rüokströmende air leaving the motor 14 flows out of the inner end of the motor H in the suction head 13 in the direction of the arrows A, so that the flow of this compressed air is directed into the interior of the suction line 12. As a result, air is sucked into the annular gap 15 in the direction of arrows B, through which the impurities or residues loosened by the tool 17 from the inner wall of the exhaust pipe 11 are sucked in and conveyed through the suction line 12 to a collecting station. By removing the particles detached from the tool in this way,

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while the tool cleans the pipe at the same time, it is guaranteed that no particles or particles remain in the tube, through which the further cleaning and the removal of possible Blockages in the pipe could be hindered.

If the to be cleared of blockages and to be cleaned pipes 11 have a very small diameter, so that it it is difficult or impossible to insert a mouth section enlarged in the Durohmesser into the tubes, for example in the form of the To introduce a built-in motor provided suction head is provided according to the invention, the motor 14 outside the To arrange line 12 and the tool shaft 16 in suitable Store to store in the mouth of the line 12, with a flexible drive shaft between the tool shaft 16 and the motor arranged outside the line 12 is provided j This flexible drive shaft can then be rotated through an opening arranged in the wall of the suction line 12 and with a sufficient seal. The return air from the tool is separated by one or more Lines passed into the suction line 12 and passed on within this line in the direction of arrows A (Pig. 2).

According to Pig. 1, the device according to the invention has a chassis 20 which can be moved on rags 19 and on which a dust separator in the form of a cyclone 21 is mounted, to which one _; flexible line 23 is connected, which at 24 to the

Suction line 12 connected iet. The air which is laden with dtm of 'S tube 11 dissolved particles, flows through

the conduit 12 and the flexible Saugleitsung 23, from which they χ by: flowing Sinlaß 22 in the dust separator 21, ■ \ in the werdenf abjgeeohieden in known manner from the air, the finely divided particles of the purified air is then passed through suitable filters in the Atmosphere derived.

'. In the illustrated embodiment of the invention is the

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Dust separator preferably provided with several filter paths or »filter bodies in order to divert the air into the environment} Because of the filter bodies or - there are several pressure nozzles assigned, through which air is periodically blown Hindu for the purpose of filter cleaning, which is opposed by the filter flows through to the normal direction of flow. The periodic operation of these nozzles is illustrated in FIG Embodiment maintained in a known manner by a pneumatic drive mechanism in the upper Section 25 of the dust separator 21 is arranged and which automatically and successively the cleaning of the various " which filter ensures »These facilities and dust collectors in the form of cyclones are already known and do not form the subject of the present invention.

For the operation of the air motor 14, the (not shown) The cleaning valves and the pneumatic actuators are provided by an external source of compressed air (not shown) used, from which a line 26 extends to the chassis 20, where the line 26 in a water and Dirt separator 27 enters. Compressed air flows from the separator 27 to an oil mist atomizer 28 and also through it a flexible compressed air line 29 »the line 29» which is preferred runs next to the line 23, occurs at 30 in the suction line 12, in which it is connected to the compressed air motor H leading compressed air line 18 is connected · From the one between the water and dirt separator 27 and the oil mist nebulizer 28 lying Druckleitungaab3chnitt leads out a connection line 31, which leads to the above-mentioned (not shown) Druokluftdüsen in the upper portion 25 of the dust separator leads, while a connecting line 32 to a (not shown) known per se ejector, which is used in the usual way to operate the cyclone separator Another connecting line 33 goes from behind the Ülnebelzeratäuber located point and leads in the upper section 25 of the dust collector to an actuating device, around the cleaning nozzle of the filter in the verso

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which filter paths or filter bodies are periodically supplied with compressed air.

The invention is not restricted to the exemplary embodiment described and illustrated, but rather also extends to all modifications within the scope of the disclosure.

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Claims (7)

Claims Device for clearing blockages in pipelines and for cleaning pipelines, in particular
Exhaust pipes, characterized in that they are with
a suction line that can be introduced into the pipelines is provided, at the front end of which a motor-driven tool is arranged for processing or cleaning the pipeline end, while the other end of the suction line is connected to a dust separator,
to which the particles detached from the pipe walls during operation of the tool can be fed through the suction line, and that the motor for driving the tool (17) is a compressed air motor (H) whose compressed air outlet opens into the suction line (12) in the direction of the low pressure source. 2. Apparatus according to claim 1, characterized in that the compressed air motor (H) within the suction line in the
Area of the mouth end of the same is arranged * 3. Apparatus according to claim 1 or 2, characterized in that the compressed air motor (H) is a rotary motor and
that the tool is a rotating brush (17), 4. Device according to claim 3, characterized in that the bristles of the rotating brush (17) essentially
are arranged along a helical line around the axis of rotation 5. Apparatus according to claim 3 or 4, characterized in that the brush (17) made of flexible brittle material, is preferably made of metal. 6. Apparatus according to claim 1 and 3, characterized in that the motor is arranged outside the suction line, 109828/0218 iwv that the mouth end of the suction line with bearings for the rotating v '/ elle of the tool is provided, and that one flexible drive shaft is inserted between the motor and the rotating shaft of the tool » 7. Apparatus according to claim 6, wherein the motor is an air motor is, characterized in that one or Several lines for the return air from the motor open into the suction line and in the direction of the low-pressure source are directed. 1 0a828 / 0218