JP2010022914A - Device for cleaning branch pipe part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily remove rust stuck to the inside face of a branch pipe part in a water pipe channel without using a device with a complicated constitution, and also to exhaust the rust to the outside. <P>SOLUTION: A branch pipe cleaning device is composed of: a pipe shaft 1 whose tip is integrated with a removing blade 2; and an exhaust port 3 bored in the outer face of the pipe shaft 1. The device is attached to a branch pipe part p by a connection member 4 externally fitted to the pipe shaft 1 in a water-stopped state, and lowers while rotating an operational handle 5 at the rear edge of the pipe shaft 1, so as to crush rust at the inner face of the branch pipe part p. After that, the exhaust port 3 is opened, and the rust is exhausted to the outside. Compared with the conventional ones in which a cleaning means and a rust exhaust means are separated, its operability is remarkably improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a branch pipe cleaning device that is used to clean the inner surface of a branch pipe that is a branch of a pipe, and in particular, to remove rust on the branch pipe for installing a fire hydrant in a water pipe. It is intended.

The maintenance management work of the water pipe includes a cleaning work, a diagnosis work, and the like. When these work is performed, a pig or a photographing device is inserted into the water pipe from the branch pipe portion which is a hydrant mounting portion. On the other hand, as illustrated in FIG. 6, rust may be generated on the inner surface of the branch pipe portion, and in some cases, rust is attached so that these devices cannot be inserted. The devices described in Patent Documents 1 and 2 are devices for removing rust on the inner surface of the branch pipe part, both of which have a blade or a brush attached to the tip of the rod-shaped member and crush the rust by rotating the rod-shaped member. It is.
Japanese Utility Model Publication No. 63-98790 Japanese Patent Laid-Open No. 11-210025

  The device described in Patent Document 1 has a configuration in which a rotating brush is inserted inside a suction pipe, and the rust attached to the inner surface of the branch pipe portion by rotation of the brush is crushed, and the piece is to be discharged to the outside by the suction pipe. It is.

  In addition, in the device described in Patent Document 2, an L-shaped drain pipe is attached to the branch pipe portion in a water-stopped state, and a discharger having a blade portion at the tip is fitted into the drain pipe, It is a mechanism that is operated by a handle shaft protruding from the bent portion. When the handle shaft is lowered while being rotated, rust on the inner surface of the branch pipe portion is crushed by the rotating blade portion. The crushed rust passes through the cavity of the discharger and is discharged from the drain pipe to the outside.

  However, in these devices, the drain pipe and the cleaning tool (rotating brush, drainer, etc.) are configured as separate members, and the insertion of the cleaning tool into the branch pipe portion or the installation work of the entire device becomes complicated. . An object of the present invention is to make the configuration of a conventional branch pipe cleaning device simpler and improve workability.

  In a branch pipe part cleaning device used for cleaning the inner surface of a branch pipe part branched from a pipe line, a pipe shaft integrated with a removal blade at the tip, and a drain port formed in the outer surface of the pipe shaft The pipe shaft is inserted into the branch pipe portion while rotating, and the rust on the inner surface of the branch pipe portion removed by the removal blade rotating together with the pipe shaft is taken in from the pipe shaft tip together with pipe water. It was discharged from the drain outlet to the outside. By doing in this way, a drain pipe and a cleaning tool can be comprised from a single member, and the insertion operation | work of the cleaning tool to a branch pipe part or the attachment of the whole apparatus becomes much easier.

  In addition, the branch pipe portion can be easily cleaned by attaching an operation handle to the rear end portion of the pipe shaft. In addition, if the connection member with the branch pipe part side that is fitted to the pipe shaft is provided in a water-stopped state between the pipe shaft and the pipe pipe, the branch pipe part is cleaned without water being cut off. Can be easily performed.

  Since the cleaning operation of the branch pipe portion of the pipeline can be performed more quickly than before, the man-hours for the entire maintenance operation of the water pipeline can be significantly reduced.

  An embodiment of the present invention will be described with reference to FIGS. The branch pipe cleaning device of this embodiment includes a pipe shaft 1, a removal blade 2 provided integrally at the tip thereof, and a drain port 3 drilled in the outer surface of the pipe shaft 1. An operation handle 5 is integrally provided at the rear end portion.

  The removal blade 2 is formed by externally fitting a cylindrical member to the tip of the pipe shaft 1. The tip of the removal blade 2 is a cutting edge processed into a saw shape or the like, and the rear end is fastened to the pipe shaft 1 with a bolt. The cutting edge may have any shape as long as it can mainly remove rust adhering to the branch pipe portion p, and the cutting edge may face the inner surface of the branch pipe portion p. The removal blade 2 may be formed by processing the tip of the pipe shaft 1, but when it is necessary to change the outer diameter of the removal blade 2 depending on the rust adhesion state and the branch pipe diameter, the embodiment of this embodiment is used. desirable. The material of the removal blade 2 is preferably stainless steel.

  The drainage port 3 is formed in the outer surface near the rear end of the pipe shaft 1 so that the ball valve 6 and the hose 11 can be attached thereto. The operation handle 5 may be fixed to the pipe shaft 1 as in this embodiment, but the operation handle 5 having a different outer diameter may be detachably attached depending on the working space and the state of rust adhesion.

  In the present embodiment, the connecting member 4 on the side of the branch pipe portion p is externally fitted to the pipe shaft 1. As shown in FIG. 2, the connecting member 4 includes a coupler 7 and a water stop portion 8. The water stop portion 8 is fitted in the upper end recess of the coupler 7, and is housed in the packing case 8b. The formed V packing 8a is pressed against the pipe shaft 1 by tightening the bolt 8d between the packing case 8b and the packing presser 8c so that water can be stopped between the pipe shaft 1 and the connecting member 4. The coupler 7 includes a cylindrical main body 7a, a gasket 7b attached to the inner peripheral upper bottom of the cylindrical main body 7a, and a lever 7c attached to the outer surface of the main body 7a.

  A cylindrical portion 9a of a flange adapter 9 described later is inserted into the cylindrical main body 7a, and is fixed to the cylindrical portion 9a by the rotation of the lever 7c. The upper surface of the cylindrical portion 9a is attached to the gasket 7b. It is pressed and water stop of the connection member 4 and the branch pipe part p side is enabled. The connecting member 4 is very convenient because it can be joined and detached simply by rotating the lever 7c with respect to the flange adapter 9. However, the connecting member 4 does not have to have such a configuration. The shaft 1 and the branch pipe part p side can be connected and communicated, and between the connection member 4 and the pipe shaft 1 and between the connection member 4 and the branch pipe part p side can be stopped, What is necessary is just to be able to discharge | emit from the said drain outlet 3, without leaking from the branch pipe part p, when discharging | emitting together with rust. 3 is a mode in which the connecting member 4 in which the packing case is integrated with the flange adapter 9 is externally fitted to the pipe shaft 1 without using the coupler 7.

  Next, the method of the rust removal work in the branch pipe part p of the water pipe P using such a branch pipe part cleaning apparatus is demonstrated. First, the fire hydrant installed in the branch pipe portion p via the repair valve 10 is removed, and the flange adapter 9 is attached to the repair valve 10 via the flange portion 9b. At this time, since the pipe P is not cut off, the repair valve 10 is kept closed. Subsequently, the connecting member 4 is disposed at the tip of the pipe shaft 1 and attached to the drain port 3 with the ball valve 6 closed, and then the cylindrical body 7a is fitted into the cylindrical portion 9a. The lever 7c is rotated from the state shown in FIG. 1 to the state shown in FIG. 4 to join the apparatus to the branch pipe portion p.

  Then, the repair valve 10 is opened, and the apparatus is lowered while rotating the operation handle 5 as shown by an arrow in FIG. At this time, the rust adhering to the branch pipe part p is crushed by the removal blade 2 that descends while rotating, and is deposited immediately below the branch pipe part p. When the removal blade 2 reaches the branch pipe portion p and the root portion of the pipe line P, the apparatus is raised, and then the above operation is repeated several times.

  The above operation is repeated, and when it is determined that the rust of the branch pipe portion p has been sufficiently removed, the apparatus is lowered until the tip of the pipe shaft 1 reaches the vicinity of the pipe bottom (two-dot chain line in FIG. 4). Then, the device is rotated so that the drainage port 3 faces the direction of the drainage place (not shown), and the hose 11 is connected to the tip of the ball valve 6 (FIG. 5). After that, when the ball valve 6 is opened, the pipe P is not cut off, so the rust pieces that have been crushed and deposited directly under the branch pipe part p from the branch pipe part p together with the pipe water p and the hose 1 11 is discharged to a drainage place.

  When the above rust removal work is completed, the ball valve 6 is closed and the hose 11 is removed from the tip of the ball valve 6. Subsequently, the apparatus is raised, and the repair valve 10 is closed when the tip of the pipe shaft 1 reaches the inside of the cylindrical portion 9a. And the said lever 7c is rotated, the said cylindrical main body 7a is isolate | separated from the said cylindrical part 9a, and a device is removed from the branch pipe part p. Finally, the flange adapter 9 is removed from the repair valve 10 and a fire hydrant is installed in the repair valve 10.

  In the present embodiment, the work is performed without shutting off the pipe P. However, when the upstream and downstream pipes P in the vicinity of the branch pipe portion p are provided with gate valves, the work is performed by shutting off the water. It is possible to do it. In such a case, it is not necessary to stop water between the branch pipe part p side and the cleaning device by the connecting member 4. However, there is no water pressure in the pipe water, and in order to discharge rust together with the pipe water, a suction means (vacuum pump or the like) as described in Patent Document 1 is attached to the drainage port 3 through the hose 11, The suction power must be used.

Front view of one embodiment of the present invention Front sectional view of one embodiment of the present invention Front sectional view of another embodiment of the present invention Work explanatory drawing using the device of the present invention Hose attachment diagram to the device of the present invention Illustration of rust attached to the branch pipe

Explanation of symbols

1. Pipe shaft 2. 2. Removal blade Drain port 4. 4. Connection member Operation handle 6. Ball valve 7. Coupler 7a. Cylindrical body 7b. Gasket 7c. Lever 8 Water stop 8a. V packing 8b. Packing case 8c. Packing presser 8d. Bolt 9. Flange adapter 9a. Cylindrical part 9b. Flange part 10. Repair valve 11. Hose Water pipe p. Branch pipe

Claims (3)

  In a branch pipe part cleaning device used for cleaning the inner surface of a branch pipe part branched from a pipe line, a pipe shaft integrated with a removal blade at the tip, and a drain port formed in the outer surface of the pipe shaft The pipe shaft is inserted into the branch pipe portion while rotating, and the rust on the inner surface of the branch pipe portion removed by the removal blade rotating together with the pipe shaft is taken in from the pipe shaft tip together with pipe water. A branch pipe cleaning device characterized by being discharged from a drain outlet to the outside.   The branch pipe cleaning device according to claim 1, wherein an operation handle is attached to a rear end portion of the pipe shaft.   The branch pipe according to claim 1 or 2, further comprising a connecting member connected to a branch pipe portion side that is fitted to the pipe shaft with a water-stopped state between the pipe shaft and the pipe shaft. Department cleaning device.

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