JP6288751B2 - Pipe line cleaning device - Google Patents

Description

  The present invention relates to a pipe line cleaning device that cleans the inner surface of an existing pipe line.

  In existing pipes such as gas pipes and water pipes, when the old pipes are repaired, the deposits on the inner surface of the pipes are removed. For example, a rust inhibitor (mainly tar epoxy resin) may be applied to the inner surface of an existing gas pipeline, but the surface of this rust inhibitor will rise due to aging, and it will be easy to peel off partially. ing. Therefore, when such a pipeline is repaired from the inner surface side, in order to improve the adhesion between the repair material and the inner surface of the pipeline, the rust inhibitor that has deteriorated before the repair should be removed from the inner surface of the pipeline. Is preferred. In addition, foreign substances contained in gas or water flowing in the pipeline may accumulate in the pipeline, which may cause problems such as flow obstruction and blockage. It is preferable to remove such deposits at an appropriate stage.

  Various apparatuses have been proposed as apparatuses for performing work in a pipe line, such as a pipe line cleaning apparatus. For example, Patent Document 1 describes an apparatus that performs a desired process such as polishing or cutting on the inner surface of a pipeline using a processing bit. More specifically, the apparatus disclosed in Patent Document 1 includes a machining unit provided with a machining bit, a front support unit and a rear support unit that support the machining unit before and after the machining unit, a front support unit, and a rear support unit. Are provided with a plurality of support means provided at equal intervals in the circumferential direction. In this apparatus, a plurality of support means are pressed against the inner surface of the pipe line, so that they are fixed at a position where machining is performed in the pipe line, and at the fixed position, a desired bit is processed on the inner surface of the pipe line. . Then, when the processing is finished, it moves to a position where another processing is performed, and is fixed at that position to perform the processing.

  Further, the conventional pipe cleaning device includes, for example, an apparatus main body, a cleaning head for cleaning the inner surface of the pipe, a plurality of legs provided in the circumferential direction of the apparatus main body, and the like. The legs support the device in the pipeline by abutting the inner surface of the pipeline in the pipeline. The legs are configured to clean the entire inner circumference of the pipeline by the cleaning head while the device is continuously moved in the pipeline while the device is supported in the pipeline.

JP-A-10-146746

  In gas pipes, water pipes, and the like, pipe joints may be used to connect the pipes. For example, the pipe joints and the pipes are connected by bolts. Therefore, an obstacle such as a bolt may protrude from the inner surface of the pipeline. In the above-described conventional pipe cleaning device, there is a problem that the device cannot move in the pipe line when the leg part in contact with the inner surface of the pipe line touches the obstacle.

  An object of the present invention is to enable movement in a pipeline even when there is an obstacle on the inner surface of the pipeline.

A pipeline cleaning device according to a first aspect of the present invention is a pipeline cleaning device that cleans the inner surface of the pipeline while being moved in the moving direction along the pipeline by being inserted into the pipeline and pulled by a wire. The apparatus main body, a cleaning head provided in the apparatus main body so as to be rotatable relative to the apparatus main body, and a plurality of the apparatus main body provided side by side in the rotation direction of the cleaning head, and movably contacting the legs, provided with, when the cleaning head in the conduit is rotated relative to the apparatus main body, in a state where the leg portion is in contact with the inner surface of the front Symbol conduit, wherein The leg portion rotates together with the device main body, and each of the plurality of leg portions is made of an elastic member, and is inclined from the upstream side to the downstream side in the moving direction and away from the device main body, Continuing on the first part A second portion inclined in a direction approaching the apparatus main body from the side to the downstream side, and a bent portion between the first portion and the second portion, and the bent portion of the pipe line The second portion is in contact with the inner surface, is separated from the apparatus main body, and has a lower bending rigidity than the first portion.

In the present invention, when the cleaning head rotates with respect to the apparatus main body in the pipe , the leg rotates together with the apparatus main body in a state where the leg contacts the inner surface of the pipe . In other words, the apparatus main body and legs rotate together with the cleaning head. Therefore, even when the leg portion contacts an obstacle on the inner surface of the pipe line, the leg portion rotates together with the apparatus main body, and the contact between the obstacle and the leg portion is released. Thereby, even if there is an obstacle on the inner surface of the pipe, the pipe cleaning device can avoid this and move inside the pipe.

  In the present invention, each of the plurality of leg portions is made of an elastic member. Therefore, when the leg portion comes into contact with an obstacle in the pipe line, the leg portion is easily deformed, so that it is easy to get over the obstacle. In addition, the plurality of legs are respectively inclined from the upstream side in the movement direction to the downstream side, the first part inclined in the direction away from the apparatus main body, and from the upstream side in the movement direction to the downstream side continuously from the first part, A second portion inclined in a direction approaching the apparatus main body, and a bent portion between the first portion and the second portion. And the bent part of a leg part contacts the inner surface of a pipe line. Therefore, even if the main body of the device falls into a step or the like in the pipe, the main body is supported by the legs, so that the pipe cleaning device contacts the inner surface of the pipe and is damaged. Is prevented. Further, the pipe cleaning device can be moved in the moving direction using the first portion inclined in the direction away from the apparatus main body from the upstream side to the downstream side in the moving direction as a guide. In addition, when the pipe cleaning device cannot move in the moving direction, it moves from the upstream side in the moving direction to the downstream side, close to the device main body, that is, from the downstream side to the upstream side in the moving direction, away from the device main body. The pipe cleaning device can be moved in the direction opposite to the moving direction, using the second portion inclined in the direction as a guide.

  In the present invention, the second portion is separated from the apparatus main body and has a lower bending rigidity than the first portion. Therefore, since the amount of deformation after the second part comes into contact with the apparatus main body is large, when the obstacle comes into contact with the leg, and when the second part comes into contact with the apparatus main body, the leg is greatly contracted and the obstacle Can be overcome.

Pipe cleaning apparatus of the second invention is the pipe cleaning apparatus of the first aspect of the invention, the tip of the second portion, characterized in that it extends along the surface of the device body.

  In the present invention, the tip of the second portion extends along the surface of the apparatus main body. Therefore, when the second part comes into contact with the apparatus main body, it is easy to slide along the surface of the apparatus main body. Therefore, when the obstacle comes into contact with the leg part and the second part comes into contact with the apparatus main body, the leg part It contracts greatly and can get over obstacles.

A pipe line cleaning device according to a third aspect of the present invention is the pipe line cleaning apparatus according to the first or second aspect , further comprising a drive unit that is provided in the apparatus main body and rotates the cleaning head relative to the apparatus main body. It is characterized by that.

  In the present invention, a drive unit that rotates the cleaning head relative to the apparatus main body is provided in the apparatus main body. Therefore, even when the pipe line is long, the cleaning head can be rotated by a driving unit provided in the apparatus main body that moves in the pipe line to clean the inside of the pipe line.

The pipe line cleaning apparatus according to a fourth aspect of the present invention is the pipe line cleaning apparatus according to any one of the first to third aspects, wherein the cleaning head has a radial brush in which a plurality of wires are bundled.

  For example, when a gap occurs in the joint portion of the pipe, a semi-solid resin is injected into the gap portion of the joint of the pipe and sealed to repair the joint portion of the pipe. Since the above-mentioned resin is semi-solid, it may fall in the pipeline and remain before drying. In the present invention, the cleaning head has a radial brush (brush shaped like an ear of rice) in which a plurality of wires are bundled. Therefore, the semi-solid resin remaining in the pipe line can be adhered to the brush to remove the semi-solid resin. In addition, for example, when water is used for cleaning the inside of the pipeline, it is necessary to drain the water from the pipeline and dry the inside of the pipeline. If the cleaning is performed, the above-described process becomes unnecessary.

In the present invention, when the cleaning head rotates with respect to the apparatus main body in the pipe , the leg rotates together with the apparatus main body in a state where the leg contacts the inner surface of the pipe . In other words, the apparatus main body and legs rotate together with the cleaning head. Therefore, even when the leg portion contacts an obstacle on the inner surface of the pipe line, the leg portion rotates together with the apparatus main body, and the contact between the obstacle and the leg portion is released. Thereby, even if there is an obstacle on the inner surface of the pipe, the pipe cleaning device can avoid this and move inside the pipe.

It is a side view of a pipe line cleaning device concerning an embodiment of the present invention. It is a front view of the pipe line cleaning apparatus of FIG. FIG. 3 is a partial cross-sectional view taken along line III-III in FIG. 2. It is a partial side view of the pipe line cleaning apparatus which shows the state which the obstruction contacted the leg part. It is a partial front view of the pipe line cleaning apparatus which shows the state which the obstruction contacted the leg part. It is a partial side view of the pipe line cleaning apparatus which shows the state which the apparatus main body and the leg part rotated from the state shown in FIG. It is a partial front view of the pipe line cleaning apparatus which shows the state which the apparatus main body and the leg part rotated from the state shown in FIG. It is a side view of the pipe line cleaning apparatus concerning a modification.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a side view of the pipeline cleaning device according to the present embodiment. In the following description, the right side of FIG. 1 will be described as the front (the moving direction of the apparatus during pipe cleaning). FIG. 2 is a front view of the pipe line cleaning device of FIG. 3 is a cross-sectional view taken along line III-III in FIG.

  As shown in FIG. 1, the pipe line cleaning apparatus 1 of this embodiment rotates the cleaning head 4 mentioned later in the state inserted in the existing gas pipe line which consists of metal pipes (for example, gray cast iron pipe). Thus, various deposits such as rust preventive agent applied to the inner surface of the pipeline P, dust, or impurities contained in the gas by the brush 12 of the cleaning head 4 that contacts the inner surface of the pipeline P. Is to be removed. In the present embodiment, an existing pipeline having a small pipe diameter of about 100 mm or less is targeted for cleaning.

  As shown in FIGS. 1 to 3, the pipe line cleaning device 1 includes a device main body 2, a drive unit 3, a cleaning head 4, a leg 5, and the like. The apparatus main body 2 includes a front unit 6 that moves through the pipe P in advance, and a rear unit 7 that is connected to the rear of the front unit 6. The front unit 6 and the rear unit 7 are each formed in a cylindrical shape. The lengths of the front unit 6 and the rear unit 7 are, for example, 150 to 250 mm, respectively, and the diameters are, for example, 40 to 50 mm. A swivel 8 is provided on the upstream side (front side) in the movement direction of the front unit 6. When the wire W (not shown) is connected to the swivel 8 and is pulled by the wire W, the pipe cleaning device 1 is moved in the moving direction. The swivel 8 prevents the wire W from being twisted.

  The front unit 6 and the rear unit 7 are connected via a universal joint 9. For this reason, the front unit 6 and the rear unit 7 can be relatively rotated (displaced) in the radial direction perpendicular to the rotation axis direction of the cleaning head 4 (the extending direction of the rotation shaft 11 described later). . In the bent pipe portion (bend) in which the pipe line P is bent, the front unit 6 and the rear unit 7 are bent at the connection part by the universal joint 9, so that the apparatus main body 2 follows the bent pipe part of the pipe line P. Therefore, the pipe line cleaning device 1 can move the curved pipe part in the pipe line P. Further, the front unit 6 and the rear unit 7 are coupled so as not to rotate relative to each other in the rotation direction of the cleaning head 4 (see FIG. 2). Yes. Therefore, when the apparatus main body 2 rotates in the rotation direction of the cleaning head 4, the front unit 6 and the rear unit 7 rotate integrally. In the straight pipe P, the rotation axis direction of the cleaning head 4 of the pipe cleaning device 1 and the moving direction of the pipe cleaning device 1 are parallel to each other.

  The drive unit 3 rotates the cleaning head 4 with respect to the apparatus main body 2. The drive unit 3 is an air motor that is rotationally driven by air supplied from a compressor (not shown) via an air hose 10. The drive unit 3 is provided in the rear unit 7 of the apparatus main body 2. The drive unit 3 is provided with a bearing 19. In addition, the rotation shaft 11 of the cleaning head 4 is attached to the drive unit 3.

  The cleaning head 4 has one end (front end) attached to the drive unit 3, a rotating shaft 11 extending from the upstream side in the moving direction to the downstream side, and a brush 12 attached to the other end (rear end) of the rotating shaft 11. And having. The axis of the rotating shaft 11 coincides with the central axis C of the apparatus main body 2. The brush 12 is a so-called radial brush in which a plurality of wires 13 are bundled. Each of the plurality of wires 13 is made of, for example, iron. Each of the plurality of wire rods 13 has a length of, for example, 50 to 100 mm, and a diameter of, for example, 0.9 to 1.1 mm. The brush 12 is attached to the tip of the rotating shaft 11 via the head connecting portion 14. Therefore, the cleaning head 4 rotates with respect to the apparatus main body 2 when the driving unit 3 rotates the rotating shaft 11. That is, the cleaning head 4 is provided in the apparatus main body 2 so as to be relatively rotatable. The brush 12 can be attached to and detached from the rotating shaft 11. When the brush 12 deteriorates, it can be removed from the rotating shaft 11 and replaced with a new one.

  A plurality of leg portions 5 are provided on the outer peripheral portions of the front unit 6 and the rear unit 7 of the apparatus main body 2 side by side in the rotation direction of the cleaning head 4 (the circumferential direction of the apparatus main body 2). In the pipe P, the leg 5 abuts against the inner surface of the pipe P so as to be movable in the moving direction. Specifically, in the front unit 6, the leg portions 5 are arranged in two rows in the circumferential direction of the front unit 6 in four equal positions in the rotation axis direction (front-rear direction) of the cleaning head 4. One is provided. Further, the legs 5 adjacent to each other in the front-rear direction have different positions in the circumferential direction. Specifically, the positions of the legs 5 adjacent in the front-rear direction are shifted by 45 degrees in the circumferential direction. Also in the rear unit 7, the leg 5 is provided in the same manner as the front unit 6. The leg 5 maintains (centers) the center axis C of the tubular device main body 2 (the front unit 6 and the rear unit 7) in the center in the radial direction of the pipe P.

  The leg part 5 consists of a flat plate spring which is an elastic member. The leg portion 5 includes a first portion 15, a second portion 16, and a bent portion 17, and has a substantially “<” shape. The first portion 15 is a portion that is inclined in a direction away from the apparatus main body 2 from the upstream side in the movement direction to the downstream side (front to rear). A part of the first portion 15 is formed by sticking two flat plate springs. The second portion 16 is a portion that is continuous with the first portion 15 and is inclined from the upstream side in the movement direction to the downstream side (from the front to the rear) in a direction approaching the apparatus main body 2. Further, the second portion 16 is separated from the apparatus main body 2. The front end (rear end) of the second portion 16 extends along the surface of the apparatus main body 2. A part of the first portion 15 is formed by bonding two flat plate springs and is thick, so that the bending rigidity (EI) of the second portion 16 is lower than the bending rigidity of the first portion 15. It has become.

  The bent portion 17 is a bent portion between the first portion 15 and the second portion 16. The bent portion 17 is urged in a direction away from the apparatus main body 2 (outside in the radial direction), and contacts the inner surface of the pipe P in the pipe P. Further, rollers 18 are rotatably provided on both sides of the leg portion 5 in the width direction with the bent portion 17 interposed therebetween. The roller 18 is urged by the leg 5 in a direction away from the apparatus main body 2 (outside in the radial direction), and contacts the inner surface of the pipe P in the pipe P. The roller 18 rotates when the pipe cleaning device 1 is moved in the pipe P in the moving direction.

  When the pipe cleaning device 1 is inserted into the pipe P, the leg 5 (bent part 17) is connected to the pipe as shown in the leg 5 located in front of and above the rear unit 7 in FIG. It contacts the inner surface of P and contracts in the radial direction from the natural posture. When the obstacle 100 has a small protruding amount such as a head or a step of a bolt protruding from the inner surface of the pipe P when moving in the pipe P, the rear unit 7 in FIG. As shown in the leg portion 5 positioned forward and downward, the conduit cleaning device 1 can get over the small obstacle 100 by contacting the obstacle 100 and further contracting in the radial direction. At this time, the protruding amount of the obstacle 100 is absorbed by one leg 5, while the positions of the other legs 5 are not changed. Therefore, the central axis C of the apparatus main body 2 is always maintained at the center in the radial direction of the pipe line P, and the posture of the pipe line cleaning device 1 during movement is stabilized.

  The pipe cleaning device 1 described above cleans the inner surface of the pipe P while being inserted into the pipe P and moved in the moving direction along the pipe P. As the procedure, first, the pulling wire W is attached to the pipe line cleaning device 1 at a position coinciding with the central axis C of the device body 2 of the swivel 8. Next, the pipe cleaning device 1 is inserted into the pipe P in a posture in which the central axis C of the apparatus main body 2 coincides with the radial center of the pipe P. Then, the wire W is pulled by a winch (not shown), and the conduit cleaning device 1 is moved in the moving direction with the front unit 6 at the head. At this time, the pipe cleaning device 1 is pulled by the wire along the radial center of the pipe P that coincides with the central axis C of the apparatus body 2.

  At the same time, air is supplied to the drive unit 3 by an air hose 10 connected to a compressor (not shown), and the drive unit 3 is rotationally driven to rotate the cleaning head 4. At this time, the brush 12 of the cleaning head 4 further opens radially by centrifugal force and contacts the inner surface of the pipe P. Accordingly, the brush 12 that rotates while being in contact with the inner surface of the pipeline P peels off deposits such as rust preventives that have adhered to the inner surface of the pipeline P, and the inner surface of the pipeline P is cleaned.

  After the cleaning of the pipe line P by the pipe line cleaning device 1 is completed, a sponge or rubber plug having substantially the same diameter as the pipe line P is inserted into the pipe line P and moved by pulling it with a wire. The deposits that have been peeled off from the inner surface of the path P and dropped into the pipe line P are removed. When using a sponge, the sponge is moved by applying back pressure to the sponge while pulling with a wire.

  As described above, the pipe cleaning device 1 rotates the cleaning head 4 by the driving unit 3 while continuously moving in the moving direction, thereby bringing the brush 12 into contact with the entire inner circumference of the pipe P, thereby The deposit adhered to the inner surface of P is peeled off, and the inner surface of the pipe P is cleaned. Here, as described above, if the obstacle 100 has a small protruding amount from the inner surface of the pipe P, such as the head of a bolt, the pipe cleaning device 1 moved in the moving direction at the time of cleaning is elastic. It is possible to get over by the contraction of the leg portion 5 made of a leaf spring having a gap. However, as shown in FIGS. 4 and 5, the inner surface of the pipe P is such that the roller 18 contacts the apparatus main body 2 (the rear unit 7 in FIGS. 4 and 5) and the leg 5 cannot contract any further. When the obstruction 200 such as a bolt leg and the leg 5 come into contact with each other, the pipe cleaning device 1 cannot move in the moving direction.

Therefore, in the present embodiment, when the cleaning head 4 rotates with respect to the apparatus main body 2 in the pipe P, the leg 5 is in contact with the inner surface of the pipe P while the leg 5 is in contact with the apparatus main body 2. Rotate with. In other words, the apparatus main body 2 and the leg 5 rotate together with the cleaning head 4. FIG. 6 shows a state in which the leg 5 is rotated 45 degrees in the rotation direction together with the apparatus main body 2 from the state shown in FIG. FIG. 7 shows a state in which the leg 5 is rotated 45 degrees in the rotation direction together with the apparatus main body 2 from the state shown in FIG. As shown in FIGS. 6 and 7, the contact between the obstacle 200 and the leg portion 5 is released, and the obstacle 200 enters the gap between the leg portions 5, so that the pipe cleaning device 1 is moved in the moving direction. When pulled, the pipe cleaning device 1 can move in the moving direction. Thus, even if the leg cleaning device 1 is in the case where the leg 5 is in contact with the large obstacle 200 on the inner surface of the pipe P, as shown in FIG. 6 and FIG. 2 and the contact between the obstacle 200 and the leg 5 is released. Thereby, even if there is a large obstacle on the inner surface of the pipe P, the pipe cleaning device 1 can move in the pipe P avoiding this. In FIGS. 5 and 7, the legs 5 located behind the rear unit 7 are omitted for the sake of simplicity.

The leg 5 is in contact with the inner surface of the pipe P so that the apparatus main body 2 and the leg 5 rotate together with the cleaning head 4 by the rotation of the cleaning head 4. In this way, in order for the leg 5 to contact the inner surface of the pipe P, the urging force (pressing force) of the leg 5 against the inner surface of the pipe P, the leg 5 and the roller 18 against the inner surface of the pipe P What is necessary is just to adjust a ground contact area, the weight of the pipe line cleaning apparatus 1, etc. suitably. Here, by adjusting these, when the cleaner head 4 in conduit P is rotated relative to the apparatus main body 2, in a state where the leg portion 5 is in contact with the inner surface of the pipe P, the leg 5 It is also possible not to rotate with the apparatus main body 2. For example, if the leg portion 5 is pressed against the inner surface of the pipeline with a strong force and the pipeline cleaning device 1 is fixed to the inner surface of the pipeline P, the apparatus main body 2 can be prevented from rotating. However, in this embodiment, when the cleaning head 4 rotates with respect to the apparatus main body 2 in the pipe P, the leg 5 is in contact with the inner surface of the pipe P, and the leg 5 is in the apparatus main body 2. Even when the leg 5 is in contact with a large obstacle 200 on the inner surface of the pipe P, the leg 5 rotates together with the apparatus main body 2 so that the obstacle 200 and the leg 5 are in contact with each other. Is to be removed.

  Note that the urging force of the leg portion 5 against the inner surface of the pipe P can be adjusted by the bending rigidity of the leaf spring constituting the leg portion 5. The contact area of the leg 5 and the roller 18 with the inner surface of the pipe P can be adjusted by the width and number of the leg 5 and the roller 18, the presence or absence of the roller 18, and the like. Further, the weight of the pipe cleaning device 1 can be adjusted by the weight of the members used for the device main body 2 and the leg portion 5.

  Next, the result of verifying the rotational speed of the apparatus main body 2 when the cleaning head 4 rotates with respect to the apparatus main body 2 in the pipe P will be described. As the driving unit 3, an air motor having an unloaded rotational speed of about 5000 rpm and a rotational speed of about 2000 rpm when the brush 12 is in contact with the inner surface of the pipe line P (loaded state) was used. Moreover, the pressing force of each leg part 5 with respect to the inner surface of the pipe line P is about 2.0 kgf. Moreover, the weight of the pipe line cleaning device 1 is about 8 kg. As a result of pulling the pipe cleaning device 1 in the pipe P having a pipe diameter of about 100 mm at a pulling speed of about 1.0 m / min, the apparatus main body 2 rotated about two times per second in the rotation direction. .

  Here, in this embodiment, each of the plurality of leg portions 5 is made of an elastic member. Therefore, when the leg portion 5 comes into contact with an obstacle in the pipe line P, the leg portion 5 is easily deformed. Therefore, the small obstacle 100 can be overcome. Each of the plurality of leg portions 5 includes a first portion 15, a second portion 16, and a bent portion 17. Then, the bent portion 17 comes into contact with the inner surface of the pipe line P. Therefore, even if the apparatus main body 2 falls into a step or the like in the pipe P, the apparatus main body 2 is supported by the legs 5, so that the pipe cleaning device 1 contacts the inner surface of the pipe P. This prevents damage and the like. Further, the pipe cleaning device 1 can be moved in the moving direction from the upstream side in the moving direction to the downstream side (from the front to the back) using the first portion 15 inclined in the direction away from the apparatus main body 2 as a guide. In the unlikely event that the pipe cleaning device 1 cannot move in the moving direction, from the upstream side in the moving direction to the downstream side (from the front to the back), the direction approaching the device body 2, that is, from the downstream side in the moving direction. The pipe line cleaning device 1 can be moved in the direction opposite to the moving direction from the upstream side (back to front), with the second portion 16 inclined in the direction away from the device main body 2 as a guide.

  In the present embodiment, the second portion 16 is separated from the apparatus main body 2 and has a lower bending rigidity than the first portion 15. Accordingly, since the amount of deformation after the second portion 16 contacts the device main body 2 (the front unit 6 and the rear unit 7) is large, an obstacle comes into contact with the leg portion 5, and the second portion 16 becomes the device main body 2. If the leg part 5 contracts greatly when it comes into contact with a small obstacle 100, it can be overcome.

  In the present embodiment, the tip of the second portion 16 extends along the surface of the apparatus main body 2. Therefore, when the second part 16 comes into contact with the apparatus main body 2, it easily slides along the surface of the apparatus main body 2, so that an obstacle comes into contact with the leg 5 and the second part 16 comes into contact with the apparatus main body 2. In this case, if the leg 5 is greatly contracted and the obstacle 100 is small, it can be overcome.

  In the present embodiment, a drive unit 3 that rotates the cleaning head 4 with respect to the apparatus main body 2 is provided in the apparatus main body 2. Therefore, even if the pipe line P is long, the cleaning head 4 can be rotated by the driving unit 3 provided in the apparatus main body 2 to clean the pipe line P.

  In the present embodiment, the cleaning head 4 has a radial brush 12 in which a plurality of wires 13 are bundled. For example, when a gap occurs in the joint portion of the pipe, a semi-solid resin is injected into the gap portion of the joint of the pipe and sealed to repair the joint portion of the pipe. Since the above-mentioned resin is semi-solid, it may fall in the pipeline and remain before drying. In the present embodiment, not only the rust preventive agent but also the above-mentioned semi-solid resin remaining in the pipe P can be adhered to the brush 12 to remove the semi-solid resin. In addition, for example, when water is used for cleaning the inside of the pipeline P, it is necessary to drain the water from the pipeline and dry the inside of the pipeline P, which increases the number of work steps, but does not use water. If the brush 12 is used for cleaning, the above process is not necessary.

  As mentioned above, although embodiment of this invention was described, the form which can apply this invention is not restricted to the above-mentioned embodiment, As suitably illustrated in the range which does not deviate from the meaning of this invention so that it may illustrate below. It is possible to make changes.

  FIG. 8 is a side view of a pipeline cleaning device according to a modification. In the above-described embodiment, the apparatus main body 2 is composed of two units, the front unit 6 and the rear unit 7. In this modification, the apparatus main body 2 is composed of only one unit (for example, a unit corresponding to the rear unit 7 of the above-described embodiment). A swivel 8 is provided in front of the apparatus body 2. A drive unit 3 is provided inside the apparatus body 2. Thus, if the apparatus main body 2 is made into one unit, the pipe line cleaning apparatus 1 will be reduced in size. The downsizing improves the moving performance of the pipe cleaning device 1 (moving the curved pipe portion of the pipe P, etc.).

  In the above-described embodiment, the driving unit 3 that rotates the cleaning head 4 with respect to the apparatus main body 2 is an air motor, and the cleaning unit 4 having the brush 12 is rotated by the driving unit 3 to clean the inner surface of the pipe P. It is like that. For example, instead of the cleaning head 4 having the brush 12, a cleaning head having a nozzle for injecting the cleaning liquid is used, and as the driving unit 3, a high-pressure cleaning liquid is supplied to the nozzle and the cleaning liquid is injected from the nozzle. In addition, a pump for rotating the nozzle may be used. In this case, the pump is provided outside the apparatus body 2 (outside the pipe line P). Moreover, you may make it rotate the cleaning head 4 which has the brush 12 using an electric motor as the drive part 3. FIG. In this case, the electric motor is provided outside the apparatus main body 2 (outside the pipe line P).

In the above-described embodiment, the legs 5 are arranged in two rows in the front unit 6 and the rear unit 7, respectively, in the circumferential direction of four equal positions and in the rotational axis direction (front-rear direction) of the cleaning head 4. Eight are provided. Not limited to this, the number and position of the leg portions 5 are determined so that the leg portions 5 are in contact with the inner surface of the pipe line P when the cleaning head 4 is rotated with respect to the apparatus main body 2 in the pipe line P. If the leg portion 5 rotates together with the apparatus main body 2, the leg portion 5 can be appropriately changed depending on the urging force of the leg portion 5 against the inner surface of the pipe P, the weight of the pipe cleaning device 1, and the like.

  In the above-described embodiment, the leg portion 5 is a leaf spring that is an elastic member. However, the leg 5 is not limited to the leaf spring as long as it has elasticity.

  In the above-described embodiment, the cleaning head 4 has the radial brush 12 (brush-type brush) in which a plurality of wires 13 are bundled. Not limited to this, instead of the brush 12, a so-called wheel brush having a shape like a wheel, a so-called umbrella brush having a shape like an umbrella, or the like may be used.

  In the above-described embodiment, the second portion 16 is separated from the device main body 2, but the tip of the second portion 16 may be connected to the device main body 2. The second portion 16 has a lower bending rigidity than the first portion, but may be the same. Moreover, although the tip of the second portion 16 extends along the surface of the apparatus main body 2, it does not need to extend along the surface of the apparatus main body 2.

  In the above-described embodiment, an existing pipeline having a small diameter of about 100 mm or less is targeted for cleaning. However, the present invention is not limited to this, and for example, an existing pipeline having a large diameter of about 100 mm to 750 mm is targeted for cleaning. It is also possible to apply the present invention to a pipe line cleaning device.

  The above-described embodiment is an example in which the present invention is applied to the inner surface cleaning of an existing gas pipeline, but in a pipeline through which water such as water supply or sewer flows, an electric cable, a communication cable, or the like is inserted. However, since deposits and the like are sufficiently considered to adhere to the inner surface, the present invention can be applied to pipes used for various purposes other than gas pipes.

DESCRIPTION OF SYMBOLS 1 Pipeline cleaning apparatus 2 Apparatus main body 3 Drive part 4 Cleaning head 5 Leg part 12 Brush 13 Wire 15 1st part 16 2nd part 17 Bending part P Pipeline

Claims (4)

A pipeline cleaning device that cleans the inner surface of the pipeline while being moved in the movement direction along the pipeline by being pulled into the pipeline and pulled by a wire ,
The device body;
A cleaning head provided in the apparatus main body so as to be relatively rotatable;
A plurality of leg portions that are provided in the apparatus main body side by side in the rotational direction of the cleaning head, and abut against the inner surface of the pipe line so as to be movable in the movement direction;
When the cleaning head in the conduit is rotated relative to the apparatus main body, the inner surface of the conduit in a state where the leg portion is in contact with the inner surface of the front Symbol conduit, the legs together with the apparatus main body Rotate against
Each of the plurality of leg portions is made of an elastic member, and is inclined from the upstream side to the downstream side in the moving direction and away from the apparatus main body, and the moving direction continuously to the first portion. A second part inclined in a direction approaching the apparatus main body from the upstream side to the downstream side, and a bent part between the first part and the second part,
The bent portion is in contact with the inner surface of the pipe;
The pipe line cleaning device, wherein the second portion is separated from the device main body and has lower bending rigidity than the first portion.   The pipe line cleaning device according to claim 1, wherein a tip end of the second portion extends along a surface of the device main body.   The pipe line cleaning apparatus according to claim 1, further comprising a drive unit that is provided in the apparatus main body and rotates the cleaning head with respect to the apparatus main body.   The pipe cleaning device according to claim 1, wherein the cleaning head includes a radial brush in which a plurality of wires are bundled.

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