JP2011104552A - Apparatus for washing inner face of pipeline - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for washing the inner face of a pipeline which can increase the propelling power of a washing head part and does not interfere the washing function without damage even if the inner diameter of a branch pipe is small or the amount of deposited substances in the pipe is high. <P>SOLUTION: The washing apparatus includes a water supply hose 5 which is introduced into a pipeline 1 through a branch pipe 2 of the pipeline 1 from the outside of the pipeline 1; a washing head 30 installed at the tip end of the water supply hose 5 and set in transportable manner along the pipeline; a rotating part which is installed in the washing head 30 and rotates on the transportation direction as the axial center; and a washing brush 40 so implanted as to extend from the rotating part of the washing head 30 in the radius direction. The washing brush 40 is implanted spirally to the transportation direction of the washing head 30 and the spiral direction of the washing brush 40 is adjusted to be a backward feeding direction of a fluid in the pipeline 1 by rotating the washing brush 40. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning device for an inner surface of a pipe that cleans the inner surface of a pipe such as a water supply pipe or a sewer pipe.

As such an apparatus for cleaning the inner surface of a pipe line, there are those proposed in Patent Document 1 and Patent Document 2. Details thereof will be described with reference to FIGS.
In FIG. 6, reference numeral 1 denotes a horizontal pipe buried in the ground, which constitutes a water supply or a sewer, and is piped by joining a number of ductile cast iron pipes together. The pipe 1 is provided with an upward branch pipe 2 for attaching auxiliary equipment such as a fire hydrant and an air valve. In this branch pipe 2, the inside and outside of the pipe 1 can be communicated by removing the auxiliary equipment. it can. Note that the inner diameter of the branch pipe 2 to which ancillary equipment such as a fire hydrant and an air valve is attached is almost fixed (for example, when the nominal diameter is 75, the inner diameter is 75 mm and the inner diameter is 65 mm. There are two types.). On the other hand, the inner diameter of the pipe line 1 (so-called main pipe) may be the same (for example, an inner diameter of 75 mm) or an extremely large diameter (for example, an inner diameter of 350 mm or more).

  Reference numeral 3 denotes a cleaning device, which includes a head portion 4 introduced into the pipe line 1, a water supply hose 5 for supplying high-pressure water to the head portion 4, a high-pressure water supply device 6 as a high-pressure water supply source, and the like. Have. The high-pressure water supply device 6 is provided outside the pipeline 1 and includes a high-pressure water supply pump 6a, a tank 6b, and the like, so that the high-pressure water supply device 6 is supplied to the head unit 4 via the water supply hose 5 fed out from the high-pressure water supply device 6. High pressure water can be supplied. Reference numeral 7 denotes a feeding device. The feeding device 7 has a pair of rollers 8A and 8B which are provided outside the pipe line 1 and can sandwich the water supply hose 5. The water supply hose is provided by these rollers 8A and 8B. 5, the feeding force into the pipe line 1, the taking-out force from the pipe line 1, and the braking force can be applied.

  7 to 9 show the detailed structure of the head unit 4. In the head portion 4, a plurality of elastic plate-shaped arc-shaped brush support portions 13 are stretched between the first head 11 and the second head 12 in the circumferential direction. A cleaning brush 14 is installed as a cleaning tool. At a plurality of positions along the circumferential direction in the first head 11, ejection holes 15 extending in a tangential direction of the first head 11 and in an oblique direction from the first head 11 to the rear are formed.

  As a result, when, for example, high-pressure water 16 is supplied from the water supply hose 5 to the first head 11, the high-pressure water 16 is ejected from the ejection hole 15 in the tangential direction and obliquely behind the first head 11. The Due to the jet output of the high-pressure water 16 from the jet hole 15, rotational force and forward propulsive force are applied to the first head 11.

  In such a configuration, when cleaning the inner surface of the pipe line 1, the upstream gate valve and the downstream gate valve of the cleaning section in the pipe line 1 are closed, and then a fire hydrant, an air valve, etc. are connected from the branch pipe 2. As shown in FIG. 10, the brush support portion 13 is grasped by hand and inserted into the branch pipe 2 with the outer diameter of the head portion 4 reduced, and the cleaning device is inserted into the pipe line 1 through the branch pipe 2. 3 head part 4 and the water supply hose 5 connected to it are inserted.

  Next, high pressure water 16 is supplied from the high pressure water supply device 6 to the head unit 4 through the water supply hose 5. Then, the high-pressure water 16 is ejected from the ejection hole 15 to the outside. The high-pressure water 16 abuts against the wall surface forming the ejection hole 15 to apply a rotational force to the first head 11, the brush support portion 13, and the second head 12, and the head portion. 4 has a positive driving force. Then, the head unit 4 rotates while pressing the cleaning brush 14 against the inner surface of the pipe line 1 and moves forward, whereby the inner surface of the pipe line 1 is cleaned.

  When the cleaning operation is performed in this manner and the head portion 4 reaches the end of the cleaning section in the pipe line 1, the feeding operation of the water supply hose 5 is stopped and the high-pressure water supply device 6 is also stopped, and the branching portion The water supply hose 5 is pulled out from 2 over the entire length, and the head portion 4 is also pulled out of the pipe line 1 to finish the cleaning operation. Finally, by flushing the cleaning section, the deposits and the like peeled off from the inner surface of the pipe line 1 by the cleaning work are discharged from the pipe line 1 and the whole work is finished.

JP 2006-192395 A JP 2006-314926 A

  However, in the conventional cleaning apparatus as described above, since the head portion 4 is propelled only by the force applied by the high-pressure water 16 in contact with the wall surface forming the ejection holes 15, the pipe line 1 to be cleaned is When the weight of the water supply hose 5 attached to the head part 4 is long and becomes heavy, the propulsive force may be insufficient, and the head part 4 may have to be pushed into the pipe line 1 manually. There were problems that required a lot of labor and time.

  Further, in the conventional cleaning apparatus, the head unit 4 has a structure in which a plurality of elastic plate-shaped arc-shaped brush support units 13 are sandwiched between the first head 11 and the second head 12, and the brush The support portion 13 requires a relatively long size and is weak in strength. In particular, it is a structure that is easily plastically deformed when a force is applied in a direction in which the brush support portion 13 is bent. Therefore, as shown in FIG. 11 (a), when the direction of the head part 4 is changed at a location where the branch pipe 2 is connected to the pipe line 1, insertion into the pipe line 1 becomes difficult ( This tendency becomes remarkable when the branch pipe 2 has a small inner diameter (for example, when the inner diameter is 65 mm), and the head support 4 is damaged due to bending of the brush support portion 13 and the cleaning function cannot be exhibited. There is also a problem.

  Furthermore, as shown in FIG. 11 (b), the pipe line 1 may cause a deposit 17 such as a rust hump on its inner surface as shown in FIG. 11B, and the amount of the deposit 17 such as a rust hump is not so large. In some cases, the head part 4 can pass through the pipe line 1 without hindrance. However, as shown in FIG. 11 (c), when the amount of the deposit 17 such as rust is large, the brush support portion 13 bends when the tip of the head portion 4 contacts the deposit 17. In this case, the cleaning function cannot be exhibited.

  The present invention solves the above-mentioned problems, and can increase the driving force of the cleaning head portion. Further, even when the branch pipe has a small inner diameter or a large amount of deposits in the pipe, the damage is minimized. It is an object of the present invention to provide a cleaning device for the inner surface of a pipe line that is limited to the limit and does not impair the cleaning function.

  In order to solve the above-mentioned problem, the present invention is a cleaning device for cleaning the inner surface of a pipeline, the water supply hose introduced from the outside of the pipeline into the pipeline through the branch pipe, A cleaning head provided at the tip of a water supply hose and arranged in a state that can be transferred along a pipe line, a rotating unit that is provided in the cleaning head and rotates about the transfer direction as an axis, A cleaning brush which is provided in the rotating part and is implanted so as to extend in a radial direction from the rotating part, and the cleaning brush is implanted so as to be spiral with respect to a transfer direction of the cleaning head, and the cleaning The spiral direction of the brush is a direction in which the fluid in the pipe is sent backward by rotating the cleaning brush.

  With this configuration, when the cleaning brush is rotated, a force for feeding water in the pipeline or the inner wall surface of the pipeline backward is generated, and a propulsive force acts on the cleaning head. Therefore, even when the pipe line to be cleaned is long, it is not necessary to manually push the cleaning head into the pipe line.

Further, the present invention is characterized in that a cylindrical metal rotating pipe body is provided in the rotating portion, and a cleaning brush is implanted in a spiral shape with respect to the rotating pipe body.
With this configuration, the cleaning head can be configured with a metal rotating pipe body having high rigidity and strength, and a cleaning brush having flexibility embedded in the rotating pipe body, from the branch pipe to the pipeline. By setting the rotating pipe body to a dimension that allows the rotating pipe body to pass through the connected portion, it is possible to prevent the cleaning head from being damaged by bending the rotating pipe body. Moreover, there are many deposits such as rust humps on the inner surface of the pipe line, and even when the deposits come into contact with the rotating pipe body, the rotating pipe body is hardly bent and the cleaning function is improved. Can be maintained. Furthermore, since the cleaning brush is spirally implanted with respect to the rotating pipe body, there is no problem even if the rotating pipe body is not long, and as a result, the branch pipe is connected to the pipeline. It is easy to form the rotating pipe body in a shape that can pass without trouble even at locations where there is a lot of deposits such as rust humps on the inner surface of the pipe line.

  According to the present invention, a jet hole for jetting water supplied from a water supply hose in a direction inclined with respect to the radial direction is formed in a part of the rotating portion of the cleaning head. The rotating portion is rotated by the force received.

  Further, the present invention is characterized in that the ejection hole is formed so as to eject backward from the rotating portion, and the ejection hole is transferred forward also by a force received from water. As a result, a propulsive force that is transferred forward is generated also by the force that the ejection hole receives from the water, and is combined with the propulsive force that accompanies the rotation of the cleaning brush to propel the cleaning head.

  As described above, according to the present invention, the cleaning brush for cleaning the inner surface of the pipe line is installed so as to be spiral with respect to the transfer direction of the cleaning head, so that the rotation of the cleaning brush is rotated. A force is generated to feed water in the pipe and the inner wall surface of the pipe to the rear, whereby a driving force acts on the cleaning head. Therefore, even when the pipe line to be cleaned is long, it is not necessary to manually push the cleaning head into the pipe line, and much time and effort are not required.

  In addition, according to the present invention, since the support portion of the cleaning brush is made of a metal rotating pipe body, there are places such as rust humps on locations where the branch pipe is connected to the pipe line and on the inner surface of the pipe line. Even in the case where many adhere, the rotating pipe body is not damaged by bending or the like, and the cleaning function can be maintained well. Furthermore, since the cleaning brush is spirally implanted with respect to the rotating pipe body, there is no problem even if the rotating pipe body is not long, and as a result, the branch pipe is connected to the pipeline. There is an advantage that the rotating pipe body can be easily formed into a shape that can pass without trouble even in places where there are many deposits such as rust humps on the inner surface of the pipe line.

It is a figure which shows schematic structure of the washing | cleaning apparatus of the pipe inner surface which concerns on embodiment of this invention. It is a figure which shows a mode that the same washing | cleaning apparatus is introduced in a pipe line. It is a perspective view of the washing head of the washing device. It is a longitudinal cross-sectional front view of the same washing head. It is a longitudinal cross-sectional side view of the same washing head. It is a figure which shows schematic structure of the washing | cleaning apparatus of the conventional pipeline inner surface. It is a perspective view of the head part in the conventional cleaning apparatus. It is a longitudinal cross-sectional front view of the head part in the conventional cleaning apparatus. It is a longitudinal cross-sectional side view of the head part in the conventional cleaning apparatus. It is a figure which shows the state which inserts the head part in the conventional cleaning apparatus. (A)-(c) is a figure which shows simply the state which inserts the head part in the conventional cleaning apparatus, respectively.

  Hereinafter, a pipe inner surface cleaning apparatus according to an embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the component of the function similar to the component demonstrated by the 1st, 2nd conventional cleaning method mentioned above.

  In FIG. 1, reference numeral 1 denotes a horizontal pipe buried in the ground, which constitutes a water supply and a sewer, and is piped by joining a number of ductile cast iron pipes together. The pipe 1 is provided with an upward branch pipe 2 for attaching auxiliary equipment such as a fire hydrant and an air valve. In this branch pipe 2, the inside and outside of the pipe 1 can be communicated by removing the auxiliary equipment. it can. Note that the inner diameter of the branch pipe 2 to which ancillary equipment such as a fire hydrant and an air valve is attached is almost fixed (for example, when the nominal diameter is 75, the inner diameter is 75 mm and the inner diameter is 65 mm. There are two types.). On the other hand, the inner diameter of the pipe line 1 (so-called main pipe) may be the same (for example, an inner diameter of 75 mm) or an extremely large diameter (for example, an inner diameter of 350 mm or more).

  Reference numeral 20 denotes a cleaning device, which is introduced (inserted) into the pipeline 1 from the outside of the pipeline 1 via the branch pipe 2 of the pipeline 1. For example, a water supply hose 5 to which high-pressure water 16 is supplied, A cleaning head 30 which is provided at the tip, is inserted from the opening of the tip of the branch pipe 2 inside the pipe 1 and is transportable along the axial direction of the pipe 1, and supply of high-pressure water It has a high-pressure water supply device 6 as a source. The high-pressure water supply device 6 is provided outside the pipe line 1 and includes a high-pressure water supply pump 6a, a tank 6b, and the like, so that the high-pressure water supply device 6 is supplied to the cleaning head 30 via the water supply hose 5 fed out from the high-pressure water supply device 6. High pressure water can be supplied. A feeding device 7 is provided outside the pipeline 1 and has a pair of rollers 8A and 8B that can sandwich the water supply hose 5. The rollers 8A and 8B connect the water supply hose 5 to the pipeline 1 It is comprised so that the infeed force, the taking-out force from the pipe line 1, and the braking force can be applied.

  2 to 4 show the structure of the cleaning head 30. As shown in these drawings, the cleaning head 30 includes a base 31 having a water passage 31a attached to the tip of the high-pressure water supply pump 6a, and radial bearings 32 and 33 and a thrust bearing 34 on the base 31. And a rotary part 39 that is rotatably arranged around the axis 35 and includes a first rotary head part 36, a second rotary head part 37, a rotary pipe body 38, and the like, and a rotary pipe of the rotary part 36 And a cleaning brush 40 (radially) implanted so as to extend in a radial direction from the body 38.

  As shown in FIG. 2, the rotating portion 39 includes a first rotating head portion 36 that is fitted on the outer peripheral side of the radial bearings 32 and 33, and the first rotating head portion 36 and the first rotating head 36. The first rotary head unit 36 and the second rotary head are arranged in such a manner that the second rotary head unit 37 disposed in front of the head unit 36 is connected by a plurality of connecting members 42 and the connecting members 42 are sheathed. A rotating pipe body 38 in which a cleaning brush 40 is implanted is disposed between the portion 37 and the portion 37. The first rotary head portion 36 is formed from a substantially cylindrical block body, and has a plurality of ejection holes 41 (shown in FIG. 4) for ejecting water introduced through the water passage 31a of the base portion 31 to the outside. 4 points are formed. Here, as shown in FIG. 2 and FIG. 4, the ejection hole 41 extends obliquely rearward and outward in the first rotary head portion 36, and further on the outer peripheral surface of the first rotary head portion 36. It is formed so as to be inclined toward the tangential side in contact. Accordingly, when, for example, high-pressure water 16 is supplied from the water supply hose 5 to the first rotary head portion 36, the high-pressure water 16 is tangentially and obliquely behind the first rotary head portion 36 from the ejection hole 41. Erupted in the direction of. Due to the jet output of the high-pressure water 16 from the jet holes 41 (force applied by the high-pressure water 16 in contact with the wall surface forming the jet holes 41), the first rotary head portion 36 is propelled forward and forward. As a result, a rotational force and a forward propulsive force are applied to the rotating portion 39 provided with the first rotating head portion 36 and the cleaning brush 40.

  In this embodiment, the connecting member 42 for connecting the first rotary head portion 36 and the second rotary head portion 37 has a bent portion near the rear portion (specifically, the rear portion is obtained by being bent). Metal plates (other than those arranged in a posture along the axis 35 close to the cleaning head 30) are disposed at a plurality of locations on the outer peripheral surface of the first rotary head 36 (in this embodiment, 90 degrees). The second rotary head portion 37 is attached to the distal end of the connecting member 42 at four positions (at four intervals). The second rotary head portion 37 includes a second rotary head main body portion 43 fixed to the distal end portion of the connecting member 42 with a screw, and a second rotary head head portion 44 screwed to the second rotary head main body portion 43. It consists of. Note that 45 in FIG. 2 is an intermediate connecting member that connects the vicinity of the bent portion of the connecting member 42 and the rear end portion of the rotating pipe body 38 with a screw or the like.

  Further, on the outside of the connecting member 42 (specifically, the portion from the attachment portion of the connecting member 42 to the second rotary head main body 43 to the attachment portion of the intermediate connecting member 45), a small diameter, tubular metal The rotating pipe body 38 is packaged, and a fixing tube 45 that is caulked and locked at the base of the cleaning brush 40 is fixed along the outer peripheral surface of the rotating pipe body 38 by welding or the like. Here, in particular, the fixing tube 45 is fixed on the outer peripheral surface of the rotating pipe body 38 in a spiral shape with respect to the transfer direction of the cleaning head 40, whereby the cleaning brush 40 is attached to the cleaning head 30. It is planted in a spiral posture with respect to the transfer direction. The spiral direction of the cleaning brush 40 is a direction in which water, which is a fluid in the pipe 1, is sent backward by rotating the cleaning brush 40.

  In the above configuration, when cleaning the inner surface of the pipe line 1, the upstream gate valve and the downstream gate valve of the cleaning section in the pipe line 1 are closed and the cleaning section is shut off, then one end of the cleaning section The cleaning head 30 is inserted into the branch pipe 2 while removing the auxiliary equipment from the branch pipe 2 to which the auxiliary equipment such as a fire hydrant is attached at the part and holding the rotating pipe body 38 by hand. Then, the cleaning head 30 of the cleaning device 20 and the water supply hose 5 connected thereto are introduced (inserted) into the pipe line 1 through the branch pipe 2.

  In this case, the cleaning head 30 of the cleaning apparatus 20 is configured such that the cleaning brush 40 is implanted in the metal rotary pipe body 38. Since the rotary pipe body 38 has sufficient rigidity, as shown in FIG. In addition, the cleaning head 30 is not damaged even if it is connected from the branch pipe 2 to the pipe line 1 because the rotating pipe body 38 is bent, and the subsequent cleaning operation is not hindered.

  Thereafter, when the cleaning head 30 is introduced into the cleaning section of the pipe line 1, high-pressure water is supplied from the high-pressure water supply device 6 to the cleaning head 30 through the water supply hose 5, and water is ejected from the ejection holes 41. Then, the propulsive force of the cleaning head 30 and the rotational force to the rotating portion 39 and the cleaning brush 40 are applied by the jet output of the high-pressure water 16 from the ejection hole 41. Here, since the cleaning brush 40 is implanted in the cleaning head 30 so as to be spiral with respect to the transfer direction of the cleaning head 30, the cleaning brush 40 is rotated so that the inside of the pipe 1. The force that pumps the water collected in the rear and the force that the cleaning brush 40 comes into contact with the inner wall surface of the pipe line 1 and pumps the cleaning head 30 forward is generated. Force is generated. Thus, not only the propulsive force due to the jet output of the high-pressure water 16 but also the propulsive force accompanying the rotation of the cleaning brush 40 acts on the cleaning head 30, so that the pipe line 1 to be cleaned is long and the cleaning head 30 is cleaned. Even when the weight of the water supply hose 5 attached to the head 30 is increased, it is possible to prevent the driving force from being insufficient. Therefore, conventionally, for example, when the cleaning section is 200 m or more, it has been necessary to manually push the cleaning head into the pipe line 1. However, according to the embodiment of the present invention, the cleaning section is a long distance of about 400 m. Even if this is the case, it is not necessary to manually push the cleaning head into the pipe 1, so that much labor and time can be saved, and work efficiency is improved.

  Further, since the cleaning brush 40 is implanted in the metal rotating pipe body 38 as the cleaning head 30, a large amount of deposits 17 such as rust humps adhere to the inner surface of the pipe line 1. Even when the kimono 17 comes into contact with the rotating pipe body 38, the rotating pipe body 38 can be prevented from being bent, and the cleaning function can be maintained well.

  Further, since the cleaning brush 40 is implanted spirally with respect to the rotating pipe body 38, there is no problem even if the rotating pipe body 38 is not long, and as a result, the branch pipe 2 is connected to the pipe line 1. It is easy to form the rotating pipe body 38 in a shape that can pass through without trouble even at a connected location or a location where a large amount of deposits 17 such as rust humps adhere to the inner surface of the pipeline 1. The shape of the cleaning brush 40 may be slightly larger than the size of the conduit 1 so that the tip of the cleaning brush 40 is in good contact with the inner surface of the conduit 1. 2 and 3, the case where two cleaning brushes 40 are disposed in the circumferential direction has been described. However, depending on the adhesion force and size of the deposit 17, the number and material thereof are determined. What is necessary is just to select (material) suitably. Further, as a material for forming the cleaning brush 40, it is preferable to use a nylon brush or the like, but the material is not limited to this, and various materials may be used.

  In addition, since the cleaning brush 40 is formed in a spiral shape, when the cleaning head 30 is rotated, the cleaning brush 40 is continuously in contact with the rotation direction, and the cleaning brush 40 is in a so-called strong state. There is also an advantage that the deposit 17 can be scraped well by strongly contacting the deposit 17 in a state where it is difficult to bend.

  When the cleaning operation is performed in this way and the cleaning head 30 reaches the end of the cleaning section in the pipe line 1, the feeding operation of the water supply hose 5 is stopped and the high-pressure water supply device 6 is also stopped. The water supply hose 5 is pulled out from the branch part 2 over the entire length, and the cleaning head 30 is also pulled back out of the pipe line 1 to complete the cleaning operation. Finally, by flushing the cleaning section, the deposits and the like peeled off from the inner surface of the pipe line 1 by the cleaning work are discharged from the pipe line 1 and the whole work is finished.

  In the above embodiment, the case where the branch pipe 2 for a fire hydrant is used has been described. However, the present invention is not limited to this, and can be applied to a branch pipe for an air pipe and various repair branch pipes. Yes, it can be used for sewers.

DESCRIPTION OF SYMBOLS 1 Pipe line 2 Branch pipe 5 Water supply hose 6 High-pressure water supply apparatus 7 Feeding apparatus 20 Cleaning apparatus 30 Cleaning head 31 Base part 38 Rotating pipe body 39 Rotating part 40 Cleaning brush 41 Ejection hole

Claims (4)

A cleaning device for cleaning the inner surface of a pipeline,
A water supply hose introduced into the pipeline from outside the pipeline via the branch pipe of the pipeline,
A cleaning head provided at the tip of the water supply hose and disposed in a state capable of being transferred along a pipeline;
A rotating unit that is provided in the cleaning head and rotates around the transfer direction;
A cleaning brush provided in a rotating part of the cleaning head and planted so as to extend in a radial direction from the rotating part;
The cleaning brush is implanted so as to be spiral with respect to the transfer direction of the cleaning head, and the spiral direction of the cleaning brush causes the fluid in the pipeline to be sent backward by rotating the cleaning brush. An apparatus for cleaning an inner surface of a pipe line characterized by being in a direction.   The apparatus for cleaning an inner surface of a pipe line according to claim 1, wherein a cylindrical metal rotating pipe body is provided in the rotating portion, and a cleaning brush is implanted in a spiral shape with respect to the rotating pipe body.   An ejection hole is formed in a part of the rotating part of the cleaning head to eject water supplied from the water supply hose in a direction inclined with respect to the radial direction. The apparatus for cleaning an inner surface of a pipe line according to claim 1 or 2, wherein the apparatus is rotated.   4. The apparatus for cleaning an inner surface of a pipeline according to claim 3, wherein the ejection hole is formed so as to eject backward from the rotating portion, and the ejection hole is transferred forward also by a force received from water.

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