JP4554486B2 - Attachment removal device in branch pipe - Google Patents

Description

  The present invention relates to an apparatus for removing adhering matter in a branch pipe that removes the adhering matter on the inner wall of the branch pipe, which becomes an obstacle to insertion when an underwater robot for inspection is inserted from a branch pipe branched from the main pipe during inspection of the pipe.

  When inspecting pipes such as water pipes and drain pipes, branch off upward from the main pipe, remove the air valve from the branch pipe provided with the air valve, etc., and from this branch pipe to FIGS. An underwater robot 40 for inspection that is equipped with cameras 41 and 43, illumination lamps 42 and 44, a laser pointer 45, a propeller 46, thrusters 47 and 48, and stability fins 49 and transmits data through a combined optical / power cable 50 as shown. Etc. are inserted into the main pipe and inspected by this inspection underwater robot. When inserting the underwater robot for inspection, it is necessary to remove the deposits such as rust attached to the inner wall of the branch pipe which hinders the insertion.

  Therefore, as shown in FIG. 9, a support pipe 11 attached to the branch pipe 3 branched from the main pipe 2, a drain pipe 12 branched from the support pipe 11, a drain valve 13 for the drain pipe 12, and a branch from within the support pipe 11. A branch pipe deposit removing device 10 </ b> X provided with a deposit removing mechanism 14 that moves into the pipe 3 and removes the deposit A attached to the inner wall of the branch pipe 3 is used.

  In this branch pipe deposit removing device 10X, the handle 14h connected to the deposit removing mechanism 14 and the rod 14a is rotated and moved up and down to remove the deposit A and the drain valve 13 of the drain pipe 12 is opened. Then, a water flow W from the main pipe 2 having a high water pressure toward the branch pipe 3 and the drain pipe 12 is generated, and the deposit A removed by the water flow W is conveyed and discharged out of the pipe.

  For this, in order to remove deposits (foreign matter) such as rust humps in the branch pipe, the lower end is opened, and the use of a cylindrical body discharger in which the blade is formed at the opening makes it possible to After removing foreign matter in the branch pipe and removing foreign matter in the branch pipe, an in-pipe foreign substance discharge device has been proposed that allows the discharger to approach the bottom of the main pipe and efficiently discharges the foreign matter present at the bottom of the main pipe to the outside of the pipe. (For example, refer to Patent Document 1).

However, in the conventional method, when the removed deposit is large and heavy, it cannot be transported by the water flow and falls to the main pipe side. Since there is also a flow on the main pipe side, the removed deposits flow down to the downstream side of the main pipe while the discharger approaches the bottom of the main pipe after removing the deposits in the branch pipe. There is a problem of end. In particular, if the main pipe is a water main, foreign matter such as deposits can cause deterioration of water quality and blockage of household piping, etc., so the treatment of removed deposits is an important issue. is there. There is also a problem that a large amount of water is discharged via the discharge pipe.
Japanese Patent Laid-Open No. 11-210025

  The present invention has been made in order to solve the above-described problems. The purpose of the present invention is to remove the removed deposits to the main pipe side when removing the deposits in the branch pipe branched from the main pipe. It is an object of the present invention to provide an apparatus for removing deposits in a branch pipe that can prevent the occurrence of damage.

In order to achieve the above object, an apparatus for removing deposits in a branch pipe according to the present invention includes a support pipe attached to a branch pipe branched upward from the main pipe, the support pipe moving from the support pipe to the branch pipe, In the branch pipe adhering substance removal device having an adhering substance removing mechanism for removing the adhering substance adhering to the inner wall, the adhering substance is disposed inside the branch pipe in a reduced diameter state at a tip side from a removing member of the adhering substance removing mechanism. Passage without contact, expand after passing, cover the opening of the branch pipe in the main pipe, and can be expanded and reduced in diameter so that the deposits after removal do not fall into the main pipe A falling object holding mechanism having a simple lid member is provided.

  In other words, a fallen object holding mechanism is provided at the junction between the branch pipe and the main pipe that has a lid member that can expand and reduce the diameter, which serves as a tray for the extraneous substance, so that the removed substance does not fall into the main pipe. The lid member receives the removed deposit (foreign matter) that falls and lifts the removed deposit together with the lid member and discharges it to the outside of the tube.

Even if the opening of the branch pipe at the junction between the main pipe and the branch pipe cannot be completely sealed with the lid member of the falling object holding mechanism, the fluid is discharged from the support pipe side, so that the support pipe can be removed from the main pipe. Since the flow to the side can be generated, the fluid can be discharged from the muddy water and small foreign matters from the support tube side, so that these muddy water and small foreign matters can be prevented from flowing out to the main pipe side.
Further, in the above-described apparatus for removing adhering matter in a branch pipe, the lid member is provided with a removing member for the adhering substance removing mechanism and is accommodated in a first pipe supported by an upper flange of the supporting pipe. It is provided at the lower end of.

  In the above branch pipe adhering matter removing apparatus, the lid member is formed to allow water to pass therethrough. This water-permeable lid member can be constructed by combining a framework capable of expanding and reducing the diameter and a filter member such as felt. With this configuration, a relatively large amount of fluid can be discharged from the support tube side, and a strong flow from the main tube to the support tube side can be generated. Therefore, the muddy water and small foreign matters generated in the operation of removing the deposits in the branch pipe can be transported and efficiently discharged from the support pipe side by this flow.

  According to the apparatus for removing adhering matter in a branch pipe of the present invention, in the apparatus for removing adhering matter in a branch pipe having an adhering substance removing mechanism for removing the adhering substance attached to the inner wall of the branch pipe branched from the main pipe, At this time, since the opening of the branch pipe in the main pipe is covered with the lid member of the fallen object holding mechanism and the removed deposits falling to the main pipe side are received, the removed attachment is attached even when there is a flow on the main pipe side. Kimono can be prevented from being discharged into the main pipe.

  Also, by forming the lid member so that water can flow, it is possible to increase the flow from the main pipe to the support pipe side, so turbid water and small foreign matter generated in the removal work of the deposits in the branch pipe can be removed. It can be efficiently discharged from the side of the support tube placed in the outside.

  Embodiments of an apparatus for removing adhering matter in a branch pipe according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, the in-branch deposit removing apparatus 10 includes a support pipe 11, a drain pipe 12, a drain valve 13, a deposit removing mechanism 14, a falling object holding mechanism 20, and the like.

  The support pipe 11 is a pipe for supporting the deposit removing mechanism 14 and the fallen object holding mechanism 20. The support pipe 11 has a drain pipe 12 having an inner diameter substantially the same as the inner diameter of the branch pipe 3 and having a drain valve 13 near the upper portion. Connected and formed.

  As shown in FIGS. 6 to 8, the deposit removing mechanism 14 includes a first pipe 14a supported by the upper flange 11a of the support pipe 11, and a removal member 14b provided at the lower end of the first pipe 14a. And a removal work handle 14h provided at the upper end. The removing member 14b is fixed to the first pipe 14a by the support member 14c while being in light contact with the inner wall of the branch pipe 3 or being in close proximity. The removal work handle 14h is fixed to the first pipe 14a by a wing nut 14d.

  The removal member 14b is moved up and down and rotated along the inner wall of the branch pipe 3 by rotating the upper removal handle 14h up and down, and the deposit A such as rust humps attached to the inner wall of the branch pipe 3 is rotated. Remove.

  The fallen object holding mechanism 20 that is a feature of the present invention is provided in the first pipe 14a to cover the opening 2a to which the branch pipe 3 of the main pipe 2 is connected, as shown in FIGS. A lid member 21 is provided which includes a foldable frame 21a partially fixed to the lower end of the second pipe 23 accommodated in the frame and a disk-shaped filter member 21b supported by the frame 21a. This filter member 21b is formed of felt or the like having air permeability, a perforated plate, or the like. A closing handle 24 for raising and lowering the second pipe 23 is provided at the upper end of the second pipe 23.

  Further, a third pipe (which may be a rod member) 25 is accommodated in the second pipe 23 in order to increase or decrease the diameter of the framework 21a. The lower end of the third pipe 25 is fixed to a part of the framework 21a, and an opening / closing handle 26 is provided at the upper end.

  As shown in FIGS. 2 to 5, the framework 21 a is configured such that members having a link mechanism whose tip extends and contracts are arranged radially, and a filter member 21 b fixed thereto is opened and closed in an umbrella shape. That is, when the lower end of the third pipe 25 is lowered, as shown in FIGS. 2 and 3, the center side of the framework 21a is lowered and the peripheral portion of the filter member 21b is folded downward. Further, when the lower end of the third pipe 25 is raised, as shown in FIGS. 4 and 5, the center side of the framework 21a is raised, and the periphery of the filter member 21b is raised to a horizontal state and opened.

  The outer diameter of the filter member 21b is formed to be larger than the opening 2a so that the opening 2a of the main pipe 2 can be sufficiently closed. The periphery of the filter member 21b is formed in a bent state. Therefore, the diameter of the circle connecting the outside of the framework 21 a when opened is formed to be smaller than the opening 2 a of the branch pipe 3.

  Next, the removal work of the deposits in the branch pipe 3 using this branch pipe deposit removing apparatus 10 will be described. First, the gate valve 4 attached to the branch pipe 3 is first closed by turning the handle 4h, and the air valve (not shown) attached to the upper flange 3f of the branch pipe 3 is removed.

  Thereafter, the in-branch deposit removing device 10 is placed on the upper flange 3f of the branch pipe 3, and the flange 11f is fixed to the upper flange 3f. At the time of attachment of the adhering substance removing device 10 in the branch pipe, the opening / closing handle 14h is lowered, the lid member 21 is reduced in diameter, the removal work handle 14h and the closing handle 24 are both lifted, and the removal member 14b is contracted. It is assumed that the diameter-shaped lid member 21 is moved to the upper part inside the support tube 11. At this time, a hose (not shown) or the like is connected to the drain pipe 12 so that water can be discharged to the drain destination.

  Next, the gate valve 4 is opened by turning the handle 4h, and the drain valve 13 is opened. By opening the gate valve 4 and the drain valve 13, water flows from the main pipe 2 to the branch pipe 3, the support pipe 11, and the drain pipe 12 with a high water pressure (for example, about 0.75 MPa for a water main pipe). W is generated. In order to make this water flow W appropriate, the valve opening of the drain valve 13 is adjusted to adjust the amount of drainage.

  Thereafter, the closing handle 24 and the opening / closing handle 26 are lowered with the opening / closing handle 26 lowered, that is, with the lid member 21 in a reduced diameter state. At the time of the lowering, the second pipe 23 and the third pipe 25 are lowered in the first pipe 14a without lowering the removal work handle 14h. At the time of the lowering, since the lid member 21 is in a reduced diameter state, the lid member 21 can pass through the branch pipe 3 without contacting the deposit A such as rust humps attached to the inner wall of the branch pipe 3. Due to this lowering, the lid member 21 is inserted into the main pipe 2, stopped at a predetermined lowering amount, and the state shown in FIG. 2 is obtained.

  After confirming that the lid member 21 is in the main pipe, the opening / closing handle 26 is raised without moving the closing handle 24, and the lid member 21 is in an expanded state as shown in FIGS. 4 and 5. The relative position of the opening / closing handle 26 with respect to the closing handle 24 is fixed. Then, in this expanded state, the opening / closing handle 26 and the closing handle 24 are pulled up, the filter member 21b of the lid member 21 comes into contact with the inner wall of the main pipe 2, and the opening 2a of the main pipe 3 is covered with the lid member 21. When the cover is covered, the lifting is stopped, and the vertical position of the closing handle 24 with respect to the upper flange 11a of the support tube 11 is fixed. Thereby, the opening part 2a of the branch pipe 3 in the main pipe 2 can be closed with the water-permeable lid member 21.

  Next, after adjusting the valve opening degree of the drainage valve 13 to secure the water flow W during the deposit removal operation by adjusting the amount of drainage, the removal operation handle 14h is lowered. By this descent, the removing member 14 b enters the branch pipe 3 from the support pipe 11. Then, once entering the branch pipe 3, the removal member 14b is moved up and down along the inner wall of the branch pipe 3 by rotating the removal handle 14h up and down. Then, by rotating back and forth, the deposit A attached to the inner wall of the branch pipe 3 is removed by the removing member 14b.

  At the time of this removal work, since there is a water flow W flowing from the main pipe 2 to the drain pipe 12, turbid water generated in the work for removing the deposits in the branch pipes and lightly removed deposits Ar are discharged from the drain pipe 12. The The removed deposit Ar that is relatively heavy and falls in the branch pipe 3 against the water flow W is received by the lid member 21.

  The removal work progresses, the removal work handle 14h descends, the removal member 14b reaches the bottom of the branch pipe 3, and the lower end of the first pipe 14a contacts the stopper 27 provided on the second pipe 23. Then, the operation of the removal work handle 14h is terminated.

  After the operation of the removal work handle 14h is completed, the removal work handle 14h, the closing handle 24, and the opening / closing handle 26 are pulled up. At this time, the removal work handle 14h may be pulled up alone first, but the closing handle 24 is pulled up with the opening / closing handle 26 being pulled up, that is, with the lid member 21 being expanded in diameter.

  In this pulling up, the filter member 21b of the cover member 21 in the expanded state is pulled up while contacting the inner wall of the branch pipe 3 with the peripheral part bent. Therefore, the removed deposit Ar received by the lid member 21 is pulled up together with the lid member 21 without falling to the main pipe 2 side. The deposit A is removed from the lid member 21 by an appropriate method such as cleaning after the lid member 21 is pulled up.

  After this pulling up, the handle 4h is operated to close the gate valve 4, and the drain valve 13 is also closed. After these valves are closed, the flange 11 f is removed, and the attached substance removing device 10 in the branch pipe is removed from the upper flange 3 f of the branch pipe 3. Thereby, the removal operation | work of the deposit | attachment A in the branch pipe 3 is complete | finished.

  After this removal operation, an underwater robot 40 for inspection as shown in FIGS. 10 to 13 is inserted into the main pipe, and the inspection is performed by this underwater robot for inspection. When this inspection is completed, an air valve (not shown) or the like removed prior to the work is attached to the upper flange 3f of the branch pipe 3, and the gate valve 4 is opened by turning the handle 4h to return to the state before the inspection. Return and finish all work.

  The lid member 21 is configured such that the peripheral portion of the filter member 21b is bent when the lid member 21 is lifted. However, when the highly rigid filter member 21b is used, the frame 21a is slightly reduced in diameter and then lifted. It may be configured.

  In addition, when a non-water-permeable blocking member is used instead of the filter member in the lid member 21, it is preferable to form a rubber seal line around the blocking member to enhance the sealing performance when covering the opening 2a. . In this case, the valve opening state is set to a small value so that the drain valve 13 is closed or a small water flow W is generated to prevent turbid water from leaking from the closing member to the main pipe 2 side.

  Further, regarding the framework 21a, in the above description, the mechanism for expanding and reducing the diameter is a mechanism in which members having a link mechanism in which the tip expands and contracts is radially arranged. However, other mechanisms may be used, for example, used in cooking. A mechanism for expanding and reducing the diameter such as a “drop lid” may be used. In short, in the diameter-reduced state, it passes through the branch pipe 3 without contacting the deposit A, expands the diameter after passing, covers the opening 2a of the branch pipe 3 in the main pipe 2, and removes the deposit Ar after removal. It is only necessary to provide a lid member 21 that can be expanded and reduced in diameter so as not to fall into the main pipe 2.

  Then, according to the intra-branch deposit removing apparatus 10, the intra-branch deposit removing apparatus 10 including the deposit removing mechanism 14 that removes the deposit A attached to the inner wall of the branch pipe 3 branched from the main pipe 2. When removing the foreign matter in the branch pipe 3, the opening 2a of the branch pipe 3 in the main pipe 2 is covered with the lid member 21, and the removed deposit Ar that falls to the main pipe 2 side is received. Even when W is present, the removed deposit Ar can be prevented from being discharged into the main pipe 2.

It is a figure which shows the structure of the adhering matter removal apparatus in the branch pipe of embodiment which concerns on this invention. It is a sectional side view which shows the diameter-reduced state of an umbrella-shaped fallen object holding mechanism. It is a bottom view which shows the diameter-reduced state of an umbrella-shaped fallen object holding mechanism. It is a sectional side view which shows the diameter-expanded state of an umbrella-shaped fallen object holding mechanism. It is a bottom view which shows the diameter expansion state of an umbrella-shaped fallen object holding mechanism. It is a figure which shows the structure of a deposit | attachment removal mechanism. It is the figure which looked at FIG. 6 from the upper part. It is the figure which looked at the deposit removal mechanism in a branch pipe from the lower part. It is a figure which shows the structure of the deposit removal apparatus in a branch pipe of a prior art. It is a side view of the underwater robot for inspection. It is a top view of the underwater robot for inspection. It is a front view of the underwater robot for inspection. It is a rear view of the underwater robot for inspection.

Explanation of symbols

2 Main pipe 2a Opening 3 Branch pipe 10 Adhered substance removal device in branch pipe 11 Support pipe 14 Adhered substance removing mechanism 20 Falling object holding mechanism 21 Lid member 21a Skeleton 21b Filter member A Adhered substance Ar Removed adhered substance

Claims (2)

A branch pipe provided with a support pipe attached to a branch pipe that branches upward from the main pipe, and a deposit removal mechanism that moves to the branch pipe from the support pipe and removes the deposit attached to the inner wall of the branch pipe In the kimono removing apparatus, the inside of the branch pipe passes through the branch pipe without being in contact with the deposit in the reduced diameter state than the removing member of the deposit removing mechanism, and the diameter in the main pipe is increased after passing through the branch pipe. An inside of the branch pipe provided with a fallen object holding mechanism having a lid member capable of expanding and reducing the diameter so as to cover the opening of the branch pipe and prevent the adhered matter after removal from falling into the main pipe. Deposit removal device. The lid member is provided at a lower end of a second pipe accommodated in a first pipe supported by an upper flange of the support pipe while providing a member for removing the deposit removing mechanism. The apparatus for removing deposits in branch pipes according to 1.

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