WO2010146354A1 - Tool for cleaning pipes - Google Patents

Tool for cleaning pipes Download PDF

Info

Publication number
WO2010146354A1
WO2010146354A1 PCT/GB2010/001176 GB2010001176W WO2010146354A1 WO 2010146354 A1 WO2010146354 A1 WO 2010146354A1 GB 2010001176 W GB2010001176 W GB 2010001176W WO 2010146354 A1 WO2010146354 A1 WO 2010146354A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
auxiliary tool
vibrating
air
liquid
Prior art date
Application number
PCT/GB2010/001176
Other languages
French (fr)
Inventor
Sarah-Jane Grant
William Reynolds
Original Assignee
Airnesco Group Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Airnesco Group Ltd. filed Critical Airnesco Group Ltd.
Publication of WO2010146354A1 publication Critical patent/WO2010146354A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/047—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices having internal motors, e.g. turbines for powering cleaning tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/30—Brushes for cleaning or polishing
    • A46B2200/3013—Brushes for cleaning the inside or the outside of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies

Definitions

  • the present invention relates to a vibrating tool for cleaning pipes.
  • the present invention also relates to an auxiliary tool for use with the vibrating tool and a method for applying a liquid to the interior of a pipe.
  • Air powered vibrating tools for use in industrial pipe cleaning are well known.
  • a detailed example of a known tool is given in GB 883,648.
  • Such tools are typically used with pipe cleaning attachments such as wire or synthetic brushes.
  • a pressurised air supply is connected to one end of the vibrating tool and the is tool inserted into a pipe to be cleaned.
  • the tool imparts vibration to the brush which causes the tool to work its way along the length of the pipe to be cleaned.
  • the direction of the bristle in the brush changes, causing the tool to work its way back along the pipe to the operator.
  • the air supply can be turned off and the tool retrieved.
  • the present invention provides a vibrating tool for cleaning a pipe comprising a body having a first and second end and an internal chamber, wherein the first end comprises an air inlet which is arranged to be connected to a pressurised air supply, and wherein the second end is arranged to be connected to an auxiliary tool, the tool further comprising a piston located within the internal chamber and arranged, in use, to reciprocate within the internal chamber, to impart vibration to the tool, when pressurised air is supplied to the air inlet, characterised in that the second end comprises an air outlet which is arranged, in use, to supply air from the vibrating tool to an auxiliary tool.
  • the present invention is advantageous as air from the vibrating tool may be used to power an auxiliary tool.
  • the present invention provides an auxiliary tool for use with the vibrating tool of the first aspect of the invention.
  • the auxiliary tool comprises a housing having a liquid reservoir, an air inlet and a liquid outlet, wherein the auxiliary tool is arranged to be connected to the vibrating tool so that the air inlet of the auxiliary tool is placed in fluid communication with the air outlet of the vibrating tool, the auxiliary tool being arranged, in use, to supply liquid from the liquid reservoir, via the liquid outlet, to a target when air is supplied to the liquid reservoir from the vibrating tool.
  • the auxiliary tool may be used to apply various liquids, such as oils or detergents, to the interior surface of pipes during cleaning, maintenance and preservation. This provides a convenient method of enhancing the cleaning or treatment of the pipes.
  • the auxiliary tool preferably comprises a brush attachment to minimise the number of components necessary.
  • the auxiliary tool comprises a sponge wiper for applying the liquid to the interior surface of a pipe .
  • the auxiliary tool may be arranged to be connected to a brush attachment . This arrangement is particularly useful for pipes having smaller bores.
  • the auxiliary tool may be arranged to be connected to a sponge wiper.
  • the auxiliary tool further comprises a nonreturn valve arranged to close the air inlet of the auxiliary tool to prevent liquid leaking from the liquid reservoir into the air inlet of the auxiliary tool.
  • the auxiliary tool is arranged to supply the liquid to the target as a jet or a spray.
  • the present invention provides a tool for cleaning a pipe comprising a vibrating tool according to the first aspect of the present invention and an auxiliary tool according to the second aspect of the present invention.
  • the present invention provides a kit of parts for forming a pipe cleaning apparatus comprising a vibrating tool according to the first aspect of the present invention and an auxiliary tool according to the second aspect of the present invention.
  • the present invention provides a method for applying a liquid to the interior of a pipe comprising: connecting an air powered vibrating tool to a liquid supply tool; supplying air to the liquid supply tool from the vibrating tool; and applying a liquid from the liquid supply tool to the interior of the pipe.
  • Figure 1 shows a first example of a prior art vibrating tool
  • Figure 2 shows a first example of a vibrating tool according to the present invention
  • Figure 3 shows an auxiliary tool according to the present invention in combination with the vibrating tool of Figure 2 and a brush attachment;
  • Figure 4 shows a second example of a prior art vibrating tool
  • Figure 5 shows a second example of a vibrating tool according to the present invention
  • Figure 6 shows a second auxiliary tool according to the present invention in combination with the vibrating tool of Figure 5 ;
  • Figures 7A and 7B show a bolt for connecting the auxiliary tool of Figure 6 to the vibrating tool of Figure 5;
  • Figure 8 shows yet another example of a vibrating tool according to the present invention.
  • Figure 9 shows an alternative auxiliary tool according to the present invention in combination with the vibrating tool of Figure 8 and a brush attachment .
  • Figure 1 shows a prior art vibrating tool 10 comprising an elongate hollow body 20 which houses a piston 30 mounted on a spindle 40.
  • An air inlet assembly 51 comprising an air inlet 50 is located at a first end 21 of the body and an auxiliary tool attachment 70 is located at a second end 22 of the body.
  • the auxiliary tool attachment 70 has a female threaded connection 71 for attachment of an auxiliary tool 200 (described in greater detail below) .
  • the spindle 40 is fixed within the body 20. As shown in Figure 1, the first end 41 of the spindle is supported by the air inlet assembly 51 and the second end 42 of the spindle is supported by the auxiliary tool attachment 70.
  • the spindle 40 is hollow for approximately two thirds of its length from the first end 41 towards the second end 42, the open first end 41 being in fluid communication with the air inlet 50.
  • the piston 30 is movably mounted on the spindle 40 and bearings 36 are provided to facilitate longitudinal movement of the piston 30 within the housing 20.
  • the spindle 40 and piston 30 are provided with a number of vents 35, 45 to allow air to pass from the interior of the spindle 40 to an interior chamber 23 of the body 20.
  • the body 20 is provided with vents 25 to allow air to escape from the tool 10.
  • a pressurised air supply is attached to the air inlet assembly 51 and pressurised air, typically at 80-100 psi (551.58-689.48 kPa) , is supplied to the air inlet 50.
  • pressurised air typically at 80-100 psi (551.58-689.48 kPa)
  • the air pressure within the tool 10 causes the piston 30 to move along the spindle 40 and this, in turn, causes the positional relationship between the spindle vents 45, the piston vents 35 and body vents 25 to change.
  • the piston 30 moves the magnitude and direction of the forces exerted on the piston 30 change such that the piston 30 reciprocates between the first 21 and second 22 ends of the body 20 within the internal chamber 23. This movement causes the tool 10 to vibrate.
  • FIG. 1 shows a vibrating tool 100 according to the present invention.
  • the tool 100 is similar in many respects to the prior art tool 10 described above. Where possible, like reference numerals have been used to indicate like features .
  • the spindle 140 of the vibrating tool 100 is hollow from its first end 141 to its second end 142.
  • the second end 142 of the spindle 140 is retained in a seat 150 in the auxiliary tool attachment 170.
  • a passage 160 connects the seat 150 to the female threaded connection 171 to provide a fluid path from the interior of the spindle 140 to the female threaded connection 171.
  • Figure 3 shows a tool assembly 110 comprising the vibrating tool 100, an auxiliary tool 200 and a brush attachment 300.
  • the auxiliary tool 200 is attached to the vibrating tool 100 by a hollow bolt 210 and the auxiliary tool 200 is attached to the brush attachment 300 by a bolt 310.
  • the auxiliary tool 200 comprises a housing 220 which contains a liquid reservoir 223.
  • a liquid 250 to be applied to the interior of a pipe, is contained within the reservoir 223.
  • the liquid 250 may be any liquid such as water, a detergent, a lubricant or any other liquid which it is desired to be applied to the interior of a pipe.
  • An air inlet passage 251 connects a first end 224 of the liquid reservoir 223 to a female threaded connection 271 in a first end 221 of the housing 220.
  • the air inlet passage 251 is closed by a non-return valve 280 which comprises a cap 281 and a spring 282.
  • the non-return valve 280 is arranged so that the air inlet passage 251 is normally closed unless air pressure is exerted against the cap 281 from the air inlet passage 251.
  • An over pressure bleed 252 leads from the air inlet passage 251 to the exterior of the housing 220.
  • a liquid outlet passage 290 connects a second end 225 of the liquid reservoir 223 to the exterior of the auxiliary tool 200 at a second end 222 of the housing 220.
  • the liquid outlet passage 290 may optionally be closed by a rubber slit valve (not shown) , or other similar valve, which prevents escape of the liquid 250 from the liquid reservoir 223 unless a positive pressure is applied against the slit valve from the interior of the liquid reservoir.
  • the brush attachment comprises a body 320 having bristles 340, and a wiper sponge 350.
  • the wiper sponge 350 is located on attachment bolt 310 between the body 320 of the brush and the second end 222 of the auxiliary tool 200.
  • the liquid outlet passage 290 is arranged to supply liquid 250 to the wiper sponge 350.
  • a pressurised air supply is connected to the air inlet assembly 51 of the vibrating tool 100 and pressurised air is supplied to the air inlet 50.
  • the pressurised air drives reciprocation of the piston 30 to cause reciprocation of the vibrating tool 100 which in turn causes reciprocation of the attached auxiliary tool 200 and brush attachment 300.
  • a proportion of the pressurised air flows from the hollow spindle 140 to the liquid reservoir 223 via the passage 160 and the hollow bolt 210.
  • the air pressure acting on the cap 281 of the non-return valve 280 causes the non-return valve 280 to open to allow the air to flow into the liquid reservoir 223.
  • the air pressure within the liquid reservoir 223 causes the liquid 250 to be forced through the liquid outlet passage 290 and into the wiper sponge 350.
  • the vibration of the tool 100 causes the tool assembly 110 to travel along the length of the pipe to be cleaned (not shown) .
  • the wiper sponge 350 contacts the inner surface of the pipe and applies the liquid to the inner surface of the pipe.
  • the bristles 340 and/or wiper sponge 350 preferably have a slightly larger diameter than the diameter of the pipe to be cleaned.
  • FIG. 3 is particularly suitable for applying a surface treatment, such as oil or protective coating, to the interior of the pipe as the wiper sponge 350 applies the liquid 250 after the bristles 340 have cleaned the surface.
  • the wiper sponge may be located at the forward end of the brush attachment 300, or at both the forward and aft ends.
  • a pipe may carry the liquid 250 from the liquid reservoir 223 to the forward wiper sponge.
  • the liquid 250 may be applied to the interior surface of the pipe via the bristles 240.
  • Figure 4 shows a second prior art vibrating tool 400 comprising an elongate hollow body 420 which houses a piston 430 mounted on a spindle 440.
  • An air inlet assembly 451 comprising an air inlet 450 is located at a first end 421 of the body 420 and an auxiliary tool attachment 470 is located at a second end 422 of the body.
  • the auxiliary tool attachment 470 has a female threaded connection 471 for attachment of an auxiliary tool 600 (described in greater detail below) .
  • the spindle 440 is fixed within the body 420.
  • the spindle 440 is hollow for approximately two thirds of its length from a first end 441 towards a second end 442, the open first end 441 being in fluid communication with the air inlet 450.
  • the piston 430 is movably mounted on the spindle 440.
  • the spindle 440 is provided with a series of vents 445 to allow air to pass from the interior of the spindle 440 to an interior chamber 423 of the body 420.
  • the body 420 is provided with vents 425 to allow air to escape from the tool 400.
  • a pressurised air supply is attached to the air inlet assembly 451 and pressurised air is supplied to the air inlet 450.
  • the air pressure within the tool 400 causes the piston 430 to move along the spindle 440 and this, in turn, causes the positional relationship between the spindle vents 445 and body vents 425 to change.
  • the piston 430 moves the magnitude and direction of the forces exerted on the piston 430 change such that the piston 430 reciprocates between the first 421 and second 422 ends of the body 420 within the internal chamber 423. This movement causes the tool 400 to vibrate.
  • FIG. 5 shows a second embodiment of a vibrating tool 500 according to the present invention.
  • the tool 500 is similar in many respects to the prior art tool 400 described above. Where possible, like reference numerals have been used to indicate like features.
  • the vibrating tool 500 comprises a passage 560 which provides fluid communication between the interior chamber 423 of the body 420 to the female threaded connection 571.
  • Figure 6 shows a tool assembly 610 comprising the vibrating tool 500 and a second embodiment of an auxiliary tool 600.
  • the auxiliary tool 600 is attached to the vibrating tool 500 by a bolt 615 (Figure 7A) which extends along the entire length of the auxiliary tool 600.
  • a first end 618 of the bolt 615 comprise a slot 617 which provides fluid communication between the passage 560 of the vibrating tool 500 and the interior of the auxiliary tool 600 as described in greater detail below.
  • the auxiliary tool 600 comprises a housing 620 which has bristles 640 and which carries wiper sponges 650 at either end.
  • the housing 620 is carried on a sleeve 605 which mounts on the bolt 615.
  • the housing 620 further comprises an annular liquid reservoir 623 surrounding the sleeve 605.
  • the sleeve 605 comprises an annular groove 607 which is sealed by an o-ring 608.
  • a liquid 250, to be applied to the interior of a pipe is contained within the reservoir 623.
  • An air inlet passage 651 is formed between the bolt 615 and the sleeve 605.
  • the air inlet passage 651 is in fluid communication with the groove 617 in the first end 618 of the bolt 615.
  • the air inlet passage 651 is closed by the o-ring 608 which acts as a non-return valve.
  • the o-ring 608 normally seals the groove 607 to prevent liquid 250 leaking from the liquid reservoir 623.
  • the o-ring 608 is arranged so that when air pressure is exerted against the underside of the o-ring the o-ring lifts off the groove 607 to allow air to pass into the liquid reservoir 623.
  • Liquid outlet passages 690 connects the liquid reservoir 623 to the wiper sponges 650.
  • a pressurised air supply is connected to the air inlet assembly 451 of the vibrating tool 500 and pressurised air is supplied to the air inlet 450.
  • the pressurised air drives the piston 430 to cause vibration of the tool 500 which in turn causes vibration of the attached the auxiliary tool 600.
  • a proportion of the pressurised air flows from the internal chamber 423 of the tool 500 to the liquid reservoir 623 via the passage 560 in the vibrating tool 500, the groove 617 in the bolt 615 and the passage 651 between the bolt 615 and the sleeve 605.
  • the air pressure acting on the o-ring 608 causes the o-ring to lift off the groove 607 to allow air to flow into the liquid reservoir 623.
  • the air pressure within the liquid reservoir 623 causes the liquid 250 to be forced through the liquid outlet passages 690 and into the wiper sponges 650.
  • FIG 8 shows another vibrating tool 700 according to the present invention.
  • the tool 700 is similar in many- respects to the tool 500 described above.
  • the tool 700 comprises an elongate hollow body 720 which houses a piston 730 mounted on a spindle 740.
  • An air inlet assembly 751 comprising an air inlet 750 is located at a first end 721 of the body 720, and an auxiliary tool attachment 770 is located at a second end 722 of the body.
  • the auxiliary tool attachment 770 has a female threaded connection 771 for attachment of an auxiliary tool 800 (described in greater detail below) .
  • a passage 760 provides fluid communication between the interior chamber 723 of the body 720 to the female threaded connection 771.
  • the spindle 740 is fixed within the body 720.
  • the spindle 740 is hollow for approximately two thirds of its length from a first end 741 towards a second end 742, the open first end 741 being in fluid communication with the air inlet 750.
  • the piston 730 is movably mounted on the spindle 740. The actuation of the piston 730 on the spindle 740 by pressurised air supplied to the air inlet 750 is as described above with respect to tools 400 and 500.
  • Figure 9 shows a tool assembly 710 comprising the vibrating tool 700, an auxiliary tool 800 and a brush attachment 900.
  • the auxiliary tool 800 is attached to the vibrating tool 700 by a hollow bolt 810 and the auxiliary tool 800 is attached to the brush attachment 900 by a bolt 910.
  • the auxiliary tool 800 comprises a housing 820 which contains a liquid reservoir 823.
  • a liquid 850 to be applied to the interior of a pipe, is contained within the reservoir 823.
  • the liquid 850 may be any liquid such as water, a detergent, a lubricant or any other liquid which it is desired to be applied to the interior of a pipe.
  • An air inlet passage 851 connects a first end 824 of the liquid reservoir 823 to a female threaded connection 871 in a first end 821 of the housing 820.
  • the air inlet passage 851 is closed by a non-return valve 880.
  • the nonreturn valve 880 is arranged so that the air inlet passage 851 is normally closed unless air pressure is exerted against the non-return valve 880 from the air inlet passage 851.
  • a liquid outlet passage 890 connects a second end 825 of the liquid reservoir 823 to the exterior of the auxiliary tool 800 at a second end 822 of the housing 820.
  • the liquid outlet passage 890 may optionally be closed by a rubber slit valve (not shown) , or other similar valve, which prevents escape of the liquid 850 from the liquid reservoir 823 unless a positive pressure is applied against the slit valve from the interior of the liquid reservoir.
  • the brush attachment 900 comprises a body 920 having bristles 940, and a wiper sponge 950.
  • the wiper sponge 950 is located on attachment bolt 910 between the body 920 of the brush and the second end 822 of the auxiliary tool 800.
  • the liquid outlet passage 890 is arranged to supply liquid 850 to the wiper sponge 950.
  • a pressurised air supply is connected to the air inlet assembly 751 of the vibrating tool 700 and pressurised air is supplied to the air inlet 750.
  • the pressurised air drives reciprocation of the piston 730 to cause reciprocation of the vibrating tool 700 which in turn causes reciprocation of the attached auxiliary tool 800 and brush attachment 900.
  • a proportion of the pressurised air flows from chamber 723 to the liquid reservoir 823 via the passage 851 and the hollow bolt 810.
  • the air pressure acting on the non-return valve 880 causes the non-return valve 880 to open to allow the air to flow into the liquid reservoir 823.
  • the air pressure within the liquid reservoir 823 causes the liquid 850 to be forced through the liquid outlet passage 890 and into the wiper sponge 950.
  • the vibration of the tool 700 causes the tool assembly 710 to travel along the length of the pipe to be cleaned (not shown) .
  • the wiper sponge 950 contacts the inner surface of the pipe and applies the liquid to the inner surface of the pipe.
  • the bristles 940 and/or wiper sponge 950 preferably have a slightly larger diameter than the diameter of the pipe to be cleaned. It will be understood that the embodiments described above are examples only. In particular, it will be understood that the liquid need not be applied by a sponge or bristles but may be applied by spraying or via any suitable application device. In addition, it will be understood that the sponge and/or bristle materials may be selected to suit the particular pipe cleaning/maintenance application.
  • Each of the vibrating tools 100, 500 and 700 described above may be adapted for used with known attachments by blocking the air outlet passages 160, 560,760 with a plug.
  • the air outlets 160, 560, 760 may be blocked by a solid bolt of a tool attachment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Brushes (AREA)
  • Coating Apparatus (AREA)

Abstract

A vibrating tool (100) is described for cleaning a pipe. The tool (100) comprises a body (20) with first and second ends and an internal chamber (23). The first end comprises an air inlet (50) which is arranged to be connected to a pressurized air supply. The second end is arranged to be connected to an auxiliary tool. The vibrating tool (100) also comprises a piston (30) in the internal chamber (23) arranged to reciprocate in use within the chamber (23) to impart vibration to the tool (100). When pressurized air is supplied to the air inlet (50). The second end comprises an air outlet (160) which is arranged in use to supply air from the vibrating tool (100) to an auxiliary tool.

Description

Tool For Cleaning Pipes
The present invention relates to a vibrating tool for cleaning pipes. The present invention also relates to an auxiliary tool for use with the vibrating tool and a method for applying a liquid to the interior of a pipe.
Air powered vibrating tools for use in industrial pipe cleaning are well known. A detailed example of a known tool is given in GB 883,648. Such tools are typically used with pipe cleaning attachments such as wire or synthetic brushes. In use, a pressurised air supply is connected to one end of the vibrating tool and the is tool inserted into a pipe to be cleaned. The tool imparts vibration to the brush which causes the tool to work its way along the length of the pipe to be cleaned. When the tool has reached the far end of the pipe the direction of the bristle in the brush changes, causing the tool to work its way back along the pipe to the operator. Alternatively, the air supply can be turned off and the tool retrieved.
Tools such as those described above have proved to be popular in many pipe cleaning applications including boiler flue pipe cleaning and military gun barrel cleaning. The inventor of the present invention has recognised this success and has developed an improved tool with enhanced functionality.
In a first aspect, the present invention provides a vibrating tool for cleaning a pipe comprising a body having a first and second end and an internal chamber, wherein the first end comprises an air inlet which is arranged to be connected to a pressurised air supply, and wherein the second end is arranged to be connected to an auxiliary tool, the tool further comprising a piston located within the internal chamber and arranged, in use, to reciprocate within the internal chamber, to impart vibration to the tool, when pressurised air is supplied to the air inlet, characterised in that the second end comprises an air outlet which is arranged, in use, to supply air from the vibrating tool to an auxiliary tool.
The present invention is advantageous as air from the vibrating tool may be used to power an auxiliary tool.
In a second aspect, the present invention provides an auxiliary tool for use with the vibrating tool of the first aspect of the invention. The auxiliary tool comprises a housing having a liquid reservoir, an air inlet and a liquid outlet, wherein the auxiliary tool is arranged to be connected to the vibrating tool so that the air inlet of the auxiliary tool is placed in fluid communication with the air outlet of the vibrating tool, the auxiliary tool being arranged, in use, to supply liquid from the liquid reservoir, via the liquid outlet, to a target when air is supplied to the liquid reservoir from the vibrating tool.
The auxiliary tool may be used to apply various liquids, such as oils or detergents, to the interior surface of pipes during cleaning, maintenance and preservation. This provides a convenient method of enhancing the cleaning or treatment of the pipes. The auxiliary tool preferably comprises a brush attachment to minimise the number of components necessary.
In a preferred example the auxiliary tool comprises a sponge wiper for applying the liquid to the interior surface of a pipe .
Alternatively, the auxiliary tool may be arranged to be connected to a brush attachment . This arrangement is particularly useful for pipes having smaller bores.
In another example, the auxiliary tool may be arranged to be connected to a sponge wiper.
Preferably the auxiliary tool further comprises a nonreturn valve arranged to close the air inlet of the auxiliary tool to prevent liquid leaking from the liquid reservoir into the air inlet of the auxiliary tool.
In a preferred example the auxiliary tool is arranged to supply the liquid to the target as a jet or a spray.
In a third aspect, the present invention provides a tool for cleaning a pipe comprising a vibrating tool according to the first aspect of the present invention and an auxiliary tool according to the second aspect of the present invention.
In a fourth aspect, the present invention provides a kit of parts for forming a pipe cleaning apparatus comprising a vibrating tool according to the first aspect of the present invention and an auxiliary tool according to the second aspect of the present invention.
In a fifth aspect, the present invention provides a method for applying a liquid to the interior of a pipe comprising: connecting an air powered vibrating tool to a liquid supply tool; supplying air to the liquid supply tool from the vibrating tool; and applying a liquid from the liquid supply tool to the interior of the pipe.
An example of a pipe cleaning tool according to the present invention will now be described with reference to the following drawings in which:
Figure 1 shows a first example of a prior art vibrating tool ;
Figure 2 shows a first example of a vibrating tool according to the present invention;
Figure 3 shows an auxiliary tool according to the present invention in combination with the vibrating tool of Figure 2 and a brush attachment;
Figure 4 shows a second example of a prior art vibrating tool;
Figure 5 shows a second example of a vibrating tool according to the present invention; Figure 6 shows a second auxiliary tool according to the present invention in combination with the vibrating tool of Figure 5 ;
Figures 7A and 7B show a bolt for connecting the auxiliary tool of Figure 6 to the vibrating tool of Figure 5;
Figure 8 shows yet another example of a vibrating tool according to the present invention; and
Figure 9 shows an alternative auxiliary tool according to the present invention in combination with the vibrating tool of Figure 8 and a brush attachment .
Figure 1 shows a prior art vibrating tool 10 comprising an elongate hollow body 20 which houses a piston 30 mounted on a spindle 40. An air inlet assembly 51 comprising an air inlet 50 is located at a first end 21 of the body and an auxiliary tool attachment 70 is located at a second end 22 of the body. The auxiliary tool attachment 70 has a female threaded connection 71 for attachment of an auxiliary tool 200 (described in greater detail below) .
The spindle 40 is fixed within the body 20. As shown in Figure 1, the first end 41 of the spindle is supported by the air inlet assembly 51 and the second end 42 of the spindle is supported by the auxiliary tool attachment 70. The spindle 40 is hollow for approximately two thirds of its length from the first end 41 towards the second end 42, the open first end 41 being in fluid communication with the air inlet 50. The piston 30 is movably mounted on the spindle 40 and bearings 36 are provided to facilitate longitudinal movement of the piston 30 within the housing 20.
The spindle 40 and piston 30 are provided with a number of vents 35, 45 to allow air to pass from the interior of the spindle 40 to an interior chamber 23 of the body 20. The body 20 is provided with vents 25 to allow air to escape from the tool 10.
In use, a pressurised air supply is attached to the air inlet assembly 51 and pressurised air, typically at 80-100 psi (551.58-689.48 kPa) , is supplied to the air inlet 50. The air pressure within the tool 10 causes the piston 30 to move along the spindle 40 and this, in turn, causes the positional relationship between the spindle vents 45, the piston vents 35 and body vents 25 to change. As the piston 30 moves the magnitude and direction of the forces exerted on the piston 30 change such that the piston 30 reciprocates between the first 21 and second 22 ends of the body 20 within the internal chamber 23. This movement causes the tool 10 to vibrate.
The details of the piston and vent arrangement which cause the piston 30 to reciprocate within the chamber 23 are not described in detail here as the tool 10 is well known in the art. For an explanation of the general principal of operation the reader is directed to GB 883,648 which describes the basic principal of operation. GB 883,648 is incorporated herein by reference. Figure 2 shows a vibrating tool 100 according to the present invention. The tool 100 is similar in many respects to the prior art tool 10 described above. Where possible, like reference numerals have been used to indicate like features .
Unlike the spindle 40 described above for the prior art tool 10, the spindle 140 of the vibrating tool 100 is hollow from its first end 141 to its second end 142. The second end 142 of the spindle 140 is retained in a seat 150 in the auxiliary tool attachment 170. A passage 160 connects the seat 150 to the female threaded connection 171 to provide a fluid path from the interior of the spindle 140 to the female threaded connection 171.
Figure 3 shows a tool assembly 110 comprising the vibrating tool 100, an auxiliary tool 200 and a brush attachment 300. The auxiliary tool 200 is attached to the vibrating tool 100 by a hollow bolt 210 and the auxiliary tool 200 is attached to the brush attachment 300 by a bolt 310.
The auxiliary tool 200 comprises a housing 220 which contains a liquid reservoir 223. A liquid 250, to be applied to the interior of a pipe, is contained within the reservoir 223. The liquid 250 may be any liquid such as water, a detergent, a lubricant or any other liquid which it is desired to be applied to the interior of a pipe.
An air inlet passage 251 connects a first end 224 of the liquid reservoir 223 to a female threaded connection 271 in a first end 221 of the housing 220. The air inlet passage 251 is closed by a non-return valve 280 which comprises a cap 281 and a spring 282. The non-return valve 280 is arranged so that the air inlet passage 251 is normally closed unless air pressure is exerted against the cap 281 from the air inlet passage 251. An over pressure bleed 252 leads from the air inlet passage 251 to the exterior of the housing 220.
A liquid outlet passage 290 connects a second end 225 of the liquid reservoir 223 to the exterior of the auxiliary tool 200 at a second end 222 of the housing 220. The liquid outlet passage 290 may optionally be closed by a rubber slit valve (not shown) , or other similar valve, which prevents escape of the liquid 250 from the liquid reservoir 223 unless a positive pressure is applied against the slit valve from the interior of the liquid reservoir.
The brush attachment comprises a body 320 having bristles 340, and a wiper sponge 350. The wiper sponge 350 is located on attachment bolt 310 between the body 320 of the brush and the second end 222 of the auxiliary tool 200. The liquid outlet passage 290 is arranged to supply liquid 250 to the wiper sponge 350.
In use, a pressurised air supply is connected to the air inlet assembly 51 of the vibrating tool 100 and pressurised air is supplied to the air inlet 50. The pressurised air drives reciprocation of the piston 30 to cause reciprocation of the vibrating tool 100 which in turn causes reciprocation of the attached auxiliary tool 200 and brush attachment 300. A proportion of the pressurised air flows from the hollow spindle 140 to the liquid reservoir 223 via the passage 160 and the hollow bolt 210. The air pressure acting on the cap 281 of the non-return valve 280 causes the non-return valve 280 to open to allow the air to flow into the liquid reservoir 223. The air pressure within the liquid reservoir 223 causes the liquid 250 to be forced through the liquid outlet passage 290 and into the wiper sponge 350.
As discussed above in the introduction, the vibration of the tool 100 causes the tool assembly 110 to travel along the length of the pipe to be cleaned (not shown) . As the tool assembly 110 moves along the bore of the pipe the wiper sponge 350 contacts the inner surface of the pipe and applies the liquid to the inner surface of the pipe. The bristles 340 and/or wiper sponge 350 preferably have a slightly larger diameter than the diameter of the pipe to be cleaned.
The arrangement shown in Figure 3 is particularly suitable for applying a surface treatment, such as oil or protective coating, to the interior of the pipe as the wiper sponge 350 applies the liquid 250 after the bristles 340 have cleaned the surface. In an alternative embodiment (not shown) the wiper sponge may be located at the forward end of the brush attachment 300, or at both the forward and aft ends. In this case, a pipe may carry the liquid 250 from the liquid reservoir 223 to the forward wiper sponge. In another alternative embodiment, the liquid 250 may be applied to the interior surface of the pipe via the bristles 240. Figure 4 shows a second prior art vibrating tool 400 comprising an elongate hollow body 420 which houses a piston 430 mounted on a spindle 440. An air inlet assembly 451 comprising an air inlet 450 is located at a first end 421 of the body 420 and an auxiliary tool attachment 470 is located at a second end 422 of the body. The auxiliary tool attachment 470 has a female threaded connection 471 for attachment of an auxiliary tool 600 (described in greater detail below) .
The spindle 440 is fixed within the body 420. The spindle 440 is hollow for approximately two thirds of its length from a first end 441 towards a second end 442, the open first end 441 being in fluid communication with the air inlet 450. The piston 430 is movably mounted on the spindle 440.
The spindle 440 is provided with a series of vents 445 to allow air to pass from the interior of the spindle 440 to an interior chamber 423 of the body 420. The body 420 is provided with vents 425 to allow air to escape from the tool 400.
In use, a pressurised air supply is attached to the air inlet assembly 451 and pressurised air is supplied to the air inlet 450. The air pressure within the tool 400 causes the piston 430 to move along the spindle 440 and this, in turn, causes the positional relationship between the spindle vents 445 and body vents 425 to change. As the piston 430 moves the magnitude and direction of the forces exerted on the piston 430 change such that the piston 430 reciprocates between the first 421 and second 422 ends of the body 420 within the internal chamber 423. This movement causes the tool 400 to vibrate.
Figure 5 shows a second embodiment of a vibrating tool 500 according to the present invention. The tool 500 is similar in many respects to the prior art tool 400 described above. Where possible, like reference numerals have been used to indicate like features.
The vibrating tool 500 comprises a passage 560 which provides fluid communication between the interior chamber 423 of the body 420 to the female threaded connection 571.
Figure 6 shows a tool assembly 610 comprising the vibrating tool 500 and a second embodiment of an auxiliary tool 600. The auxiliary tool 600 is attached to the vibrating tool 500 by a bolt 615 (Figure 7A) which extends along the entire length of the auxiliary tool 600. A first end 618 of the bolt 615 comprise a slot 617 which provides fluid communication between the passage 560 of the vibrating tool 500 and the interior of the auxiliary tool 600 as described in greater detail below.
The auxiliary tool 600 comprises a housing 620 which has bristles 640 and which carries wiper sponges 650 at either end. The housing 620 is carried on a sleeve 605 which mounts on the bolt 615. The housing 620 further comprises an annular liquid reservoir 623 surrounding the sleeve 605. The sleeve 605 comprises an annular groove 607 which is sealed by an o-ring 608. A liquid 250, to be applied to the interior of a pipe is contained within the reservoir 623.
An air inlet passage 651 is formed between the bolt 615 and the sleeve 605. The air inlet passage 651 is in fluid communication with the groove 617 in the first end 618 of the bolt 615. Thus, when assembled, a fluid pathway exists between the internal chamber 423 of the vibrating tool 500 and the air inlet passage 651. The air inlet passage 651 is closed by the o-ring 608 which acts as a non-return valve. The o-ring 608 normally seals the groove 607 to prevent liquid 250 leaking from the liquid reservoir 623. However, the o-ring 608 is arranged so that when air pressure is exerted against the underside of the o-ring the o-ring lifts off the groove 607 to allow air to pass into the liquid reservoir 623.
Liquid outlet passages 690 connects the liquid reservoir 623 to the wiper sponges 650.
In use, a pressurised air supply is connected to the air inlet assembly 451 of the vibrating tool 500 and pressurised air is supplied to the air inlet 450. The pressurised air drives the piston 430 to cause vibration of the tool 500 which in turn causes vibration of the attached the auxiliary tool 600.
A proportion of the pressurised air flows from the internal chamber 423 of the tool 500 to the liquid reservoir 623 via the passage 560 in the vibrating tool 500, the groove 617 in the bolt 615 and the passage 651 between the bolt 615 and the sleeve 605. The air pressure acting on the o-ring 608 causes the o-ring to lift off the groove 607 to allow air to flow into the liquid reservoir 623. The air pressure within the liquid reservoir 623 causes the liquid 250 to be forced through the liquid outlet passages 690 and into the wiper sponges 650.
Figure 8 shows another vibrating tool 700 according to the present invention. The tool 700 is similar in many- respects to the tool 500 described above. The tool 700 comprises an elongate hollow body 720 which houses a piston 730 mounted on a spindle 740. An air inlet assembly 751 comprising an air inlet 750 is located at a first end 721 of the body 720, and an auxiliary tool attachment 770 is located at a second end 722 of the body. The auxiliary tool attachment 770 has a female threaded connection 771 for attachment of an auxiliary tool 800 (described in greater detail below) . A passage 760 provides fluid communication between the interior chamber 723 of the body 720 to the female threaded connection 771.
The spindle 740 is fixed within the body 720. The spindle 740 is hollow for approximately two thirds of its length from a first end 741 towards a second end 742, the open first end 741 being in fluid communication with the air inlet 750. The piston 730 is movably mounted on the spindle 740. The actuation of the piston 730 on the spindle 740 by pressurised air supplied to the air inlet 750 is as described above with respect to tools 400 and 500.
Figure 9 shows a tool assembly 710 comprising the vibrating tool 700, an auxiliary tool 800 and a brush attachment 900. The auxiliary tool 800 is attached to the vibrating tool 700 by a hollow bolt 810 and the auxiliary tool 800 is attached to the brush attachment 900 by a bolt 910.
The auxiliary tool 800 comprises a housing 820 which contains a liquid reservoir 823. A liquid 850, to be applied to the interior of a pipe, is contained within the reservoir 823. The liquid 850 may be any liquid such as water, a detergent, a lubricant or any other liquid which it is desired to be applied to the interior of a pipe.
An air inlet passage 851 connects a first end 824 of the liquid reservoir 823 to a female threaded connection 871 in a first end 821 of the housing 820. The air inlet passage 851 is closed by a non-return valve 880. The nonreturn valve 880 is arranged so that the air inlet passage 851 is normally closed unless air pressure is exerted against the non-return valve 880 from the air inlet passage 851.
A liquid outlet passage 890 connects a second end 825 of the liquid reservoir 823 to the exterior of the auxiliary tool 800 at a second end 822 of the housing 820. The liquid outlet passage 890 may optionally be closed by a rubber slit valve (not shown) , or other similar valve, which prevents escape of the liquid 850 from the liquid reservoir 823 unless a positive pressure is applied against the slit valve from the interior of the liquid reservoir.
The brush attachment 900 comprises a body 920 having bristles 940, and a wiper sponge 950. The wiper sponge 950 is located on attachment bolt 910 between the body 920 of the brush and the second end 822 of the auxiliary tool 800. The liquid outlet passage 890 is arranged to supply liquid 850 to the wiper sponge 950.
In use, a pressurised air supply is connected to the air inlet assembly 751 of the vibrating tool 700 and pressurised air is supplied to the air inlet 750. The pressurised air drives reciprocation of the piston 730 to cause reciprocation of the vibrating tool 700 which in turn causes reciprocation of the attached auxiliary tool 800 and brush attachment 900.
A proportion of the pressurised air flows from chamber 723 to the liquid reservoir 823 via the passage 851 and the hollow bolt 810. The air pressure acting on the non-return valve 880 causes the non-return valve 880 to open to allow the air to flow into the liquid reservoir 823. The air pressure within the liquid reservoir 823 causes the liquid 850 to be forced through the liquid outlet passage 890 and into the wiper sponge 950.
As discussed above in the introduction, the vibration of the tool 700 causes the tool assembly 710 to travel along the length of the pipe to be cleaned (not shown) . As the tool assembly 710 moves along the bore of the pipe the wiper sponge 950 contacts the inner surface of the pipe and applies the liquid to the inner surface of the pipe. The bristles 940 and/or wiper sponge 950 preferably have a slightly larger diameter than the diameter of the pipe to be cleaned. It will be understood that the embodiments described above are examples only. In particular, it will be understood that the liquid need not be applied by a sponge or bristles but may be applied by spraying or via any suitable application device. In addition, it will be understood that the sponge and/or bristle materials may be selected to suit the particular pipe cleaning/maintenance application.
Each of the vibrating tools 100, 500 and 700 described above may be adapted for used with known attachments by blocking the air outlet passages 160, 560,760 with a plug. Alternatively, the air outlets 160, 560, 760 may be blocked by a solid bolt of a tool attachment.

Claims

Claims :
1. A vibrating tool for cleaning a pipe comprising a body having a first and second end and an internal chamber, wherein the first end comprises an air inlet which is arranged to be connected to a pressurised air supply, and wherein the second end is arranged to be connected to an auxiliary tool, the tool further comprising a piston located within the internal chamber and arranged, in use, to reciprocate within the internal chamber, to impart vibration to the tool, when pressurised air is supplied to the air inlet, characterised in that the second end comprises an air outlet which is arranged, in use, to supply air from the vibrating tool to an auxiliary tool.
2. An auxiliary tool for use with the vibrating tool of claim 1, the auxiliary tool comprising a housing having a liquid reservoir, an air inlet and a liquid outlet, wherein the auxiliary tool is arranged to be connected to the vibrating tool so that the air inlet of the auxiliary tool is placed in fluid communication with the air outlet of the vibrating tool, the auxiliary tool being arranged, in use, to supply liquid from the liquid reservoir, via the liquid outlet, to a target when air is supplied to the liquid reservoir from the vibrating tool.
3. An auxiliary tool according to claim 2 wherein the auxiliary tool comprises a brush attachment.
4. An auxiliary tool according to claim 2 or 3 wherein the auxiliary tool comprises a sponge wiper.
5. An auxiliary tool according to claim 2 wherein the auxiliary tool is arranged to be connected to a brush attachment .
6. An auxiliary tool according to claim 2 or 5 wherein the auxiliary tool is arranged to be connected to a sponge wiper.
7. An auxiliary tool according to any one of claims 2 to 6 further comprising a non-return valve arranged to close the air inlet of the auxiliary tool.
8. An auxiliary tool according to claim 2 wherein the auxiliary tool is arranged to supply the liquid to the target as a jet or a spray.
9. A tool for cleaning a pipe comprising a vibrating tool according to claim 1 and an auxiliary tool according to claim 2.
10. A kit of parts for forming a pipe cleaning apparatus comprising a vibrating tool according to claim 1 and an auxiliary tool according to claim 2.
11. A method for applying a liquid to the interior of a pipe comprising: connecting an air powered vibrating tool according to claim 1 to an auxiliary tool according to claim 2; supplying air to the auxiliary tool from the vibrating tool ; and applying a liquid from the auxiliary tool to the interior of the pipe.
12. A vibrating tool substantially as described herein with reference to Figures 2 and 5.
13. An auxiliary tool substantially as described herein with reference to the accompanying Figures .
PCT/GB2010/001176 2009-06-15 2010-06-15 Tool for cleaning pipes WO2010146354A1 (en)

Applications Claiming Priority (2)

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GB0910385.4 2009-06-15
GB0910385.4A GB2462507B (en) 2009-06-15 2009-06-15 Tool for cleaning pipes

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CN103341476A (en) * 2013-07-22 2013-10-09 中国人民解放军陆军军官学院 Portable pipeline inner wall pneumatic cleaning system
DE102012215930A1 (en) 2012-09-07 2014-03-13 Rheinmetall Air Defence Ag Apparatus and method for cleaning and / or preserving weapon casings and weapon parts
RU169761U1 (en) * 2016-04-19 2017-03-31 Акционерное общество "Центральный научно-исследовательский институт "Буревестник" PNEUMATIC VIBRATION DEVICE
CN108612018A (en) * 2018-05-23 2018-10-02 扬州金威环保科技有限公司 It is a kind of to recycle the environmental sanitation vehicles for carrying out depositing dust using water

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CN103230905B (en) * 2013-04-24 2015-08-12 孙清云 A kind of magnetic corner cleaning device
CN104014562B (en) * 2014-05-20 2016-02-10 天津市管道工程集团有限公司 High-purity gas long lines inwall cleans integrated artistic
CN111760729B (en) * 2020-06-29 2022-07-08 湖北省工业建筑集团安装工程有限公司 Pipeline inner wall rust cleaning robot

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GB414792A (en) * 1933-02-22 1934-08-16 Fritz Metz Rust and scale removing tool
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DE102012215930A1 (en) 2012-09-07 2014-03-13 Rheinmetall Air Defence Ag Apparatus and method for cleaning and / or preserving weapon casings and weapon parts
CN103341476A (en) * 2013-07-22 2013-10-09 中国人民解放军陆军军官学院 Portable pipeline inner wall pneumatic cleaning system
CN103341476B (en) * 2013-07-22 2014-12-03 中国人民解放军陆军军官学院 Portable pipeline inner wall pneumatic cleaning system
RU169761U1 (en) * 2016-04-19 2017-03-31 Акционерное общество "Центральный научно-исследовательский институт "Буревестник" PNEUMATIC VIBRATION DEVICE
CN108612018A (en) * 2018-05-23 2018-10-02 扬州金威环保科技有限公司 It is a kind of to recycle the environmental sanitation vehicles for carrying out depositing dust using water
CN108612018B (en) * 2018-05-23 2024-05-14 扬州金威环保科技有限公司 Sanitation vehicle for dust fall by utilizing water circulation

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GB2462507A (en) 2010-02-17
GB2462507B (en) 2011-12-14

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