JP7327796B2 - Rust remover for water supply equipment - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention is a water supply facility suitable for removing rusty bumps formed in the pipes of water supply equipment, particularly in perforated portions formed in water pipes for providing diversion cocks for branching water supply pipes from water pipes, or in the vicinity thereof. It relates to a rust remover.

Water supply facilities include water pipes (distribution pipes, water supply pipes, etc.) or water supply equipment connected to them (dividend valves, water stop valves, water meters, etc.), and water supply equipment cleaning devices that clean the inside of these pipes have been used for a long time. Various are known. Among these, there is also known a water supply equipment cleaning device capable of cleaning the inside of a water pipe or other water supply equipment by inserting a flexible elongated object having a cleaning tool attached to its tip into the water pipe. . Cleaning the pipes of water supply equipment removes dirt and rust adhering to them.

For example, in Patent Document 1, ozone water is jet-pressured from a jet nozzle of a cleaning tool attached to the tip of a flexible long flexible tube inserted into a water supply pipe. Disclosed is a plumbing cleaning device that jets against. Also. Patent document 2 discloses a water supply facility cleaning device (pipe removal device) that turbulates a spherical body of a cleaning tool attached to the tip of a flexible long lead wire inserted into a pipe such as a water pipe by applying air to it. Rust machine) is disclosed. Further, in Patent Document 3, a disk-shaped brush of a cleaning tool attached to the tip of a flexible shaft inserted into a tubular member such as a water pipe is rotated by a rotating power source outside the pipe. A plumbing cleaning device (pipe cleaner) that rotates through a pipe is disclosed.

Japanese Patent Application Laid-Open No. 2006-207266 JP-A-1-299683 JP-A-2000-312868

By the way, in the pipes of water supply facilities that have not been used for a long period of time, for example, in the perforations formed in the water pipes to provide a branch valve for branching the water supply pipe from the water pipes or in the vicinity thereof, especially the water pipes are made of cast iron. In some cases, the rust grows to such an extent that the flow of tap water in the water pipe is affected, and even large enough to block the inside of the pipe. The rust bumps are removed by inserting a flexible long object from the joint where the stop cock, water meter, etc. and the water supply pipe are connected in the residential area, and removing the rust bumps with the cleaning tool attached to the tip. will do. However, in Patent Documents 1 and 2, it is difficult to set water pressure or air pressure to the extent that rust bumps can be removed. Moreover, in Patent Document 3, even if the shape of the disk-shaped brush is devised, it is possible to bend the flexible shaft at several bends in a narrow (for example, inner diameter of about 13 mmφ to 25 mmφ) water supply pipe and rotate it. It is difficult to Therefore, the conventional water equipment cleaning devices such as those disclosed in the above Patent Documents 1 to 3 cannot deal with rust bumps such as those formed in or near the perforated portion formed in the water distribution pipe for providing the water distribution valve. do not have.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a water pipe suitable for removing rusty bumps formed in or near a perforated portion formed in a water distribution pipe to provide a water distribution valve. It is to provide an equipment rust removing device .

In order to achieve the above object, the apparatus for removing rust from water supply equipment according to claim 1 comprises a fluid ejector for ejecting fluid from an ejection port, and a rear end attached to the ejection port to guide the fluid. It has a flexible tubular body, a cutting portion having a portion for cutting rust bumps at the top, and a joint portion to which the cutting portion is rotatably connected, and the rotation axis direction of the cutting portion is the tubular body. The joint portion is attached to the distal end portion of the tubular body so as to be aligned with the axial direction of the distal end portion, and a fluid passage is formed therein for allowing the fluid to flow in from the tubular body, bending the course of the fluid, and ejecting the fluid. and a cutting tool in which the cutting portion rotates with respect to the joint portion by ejecting a fluid.

According to a second aspect of the present invention, there is provided the rust removing apparatus for water supply equipment according to the first aspect, wherein the portion of the fluid passage into which the fluid flows is formed in the direction of the rotation axis. and

Claim 3 is the water supply equipment rust removal device according to claim 1 or 2, wherein the tubular body has an outer pipe and an inner pipe, and the fluid is the inner pipe. and the outer tube is harder than the inner tube and is fitted with the joint.

According to the rust removing apparatus for water supply equipment according to the present invention, it is possible to easily remove rust bumps formed in the perforated portion formed in the water pipe for providing the water distribution valve or in the vicinity thereof.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the water supply equipment rust removal apparatus which concerns on embodiment of this invention. Fig. 3 shows a pipe body and a cutting tool of the same water supply equipment rust removing device, in which (a) is a plan view, (b) is a front view, (c) is a bottom view, and (d) is a left side view. . Fig. 2 is a cross-sectional front view (taken along the line AA in Fig. 2(a)) showing the tubular body and the cutting tool of the water supply equipment rust removing device; FIG. 3 is a cross-sectional view showing the cutting tool of the same water supply equipment rust removing device, in which (a) is cut along the plane indicated by BB in FIG. 3, and (b) is the plane indicated by CC in FIG. It is cut. It is a schematic sectional drawing which shows the usage example of a water supply equipment rust removal apparatus same as the above in reduced scale. It is sectional drawing which shows the example of use of the water supply equipment rust removal apparatus same as the above. It is front view sectional drawing which shows the modification of the water supply equipment rust removal apparatus same as the above.

DETAILED DESCRIPTION OF THE INVENTION Embodiments for carrying out the present invention will be described below. A water service equipment rust removing apparatus 1 according to an embodiment of the present invention includes a fluid ejector 2, a tubular body 3, and a cutting tool 4, as shown in FIG.

The fluid ejector 2 pressurizes the fluid with a pump or the like to eject the fluid from the ejection port 2a. As the fluid, normally water stored in a tank can be used. Fluids other than water or gases (for example, compressed air) can also be used. The fluid ejector 2 can easily control the ejection amount of the fluid by controlling a pump or the like.

The tubular body 3 is flexible and has a desired length (see FIG. 2). The tubular body 3 has its rear end attached to the ejection port 2a of the fluid ejector 2 (see FIG. 1), and guides the fluid ejected from the ejection port 2a. If the tubular body 3 is thin, its diameter can be set to about 8 mm, for example.

The tubular body 3 can have an outer tube 3a and an inner tube 3b, as shown in FIG. The fluid jetted from the jet port 2a flows through the inner pipe 3b. A flexible tube, for example, a resin tube such as a nylon tube or a polypropylene tube, can be used for the inner tube 3b. The outer tube 3a is harder than the inner tube 3b. As will be described later, the external pipe 3a has flexibility so that it does not bend or bend when it is inserted into the water supply pipe P and advances it, and it can transmit the force when it is inserted. It has hardness. A joint portion 4b of the cutting tool 4, which will be described later, is attached to the distal end portion of the outer tube 3a. When a rusty hump is cut by a cutting portion 4a of the cutting tool 4, which is described later, a hard member such as the hard outer pipe 3a that forms the pipe body 3 is pressed against the recoil of the cutting portion 4a so that the cutting portion 4a is rusted. You can keep pressing on the hump.

The outer tube 3a can be configured with a metal or resin tube or bellows hose that is harder than the inner tube 3b, and preferably includes a metal contact spring. The contact spring has a coiled element wire, and adjacent coils are in close contact with each other when no external force is applied. The contact spring is flexible and can easily obtain a force to keep the cutting portion 4a pressed against the rust bump.

The cutting tool 4 has a cutting portion 4a and a joint portion 4b. The material of the cutting tool 4 may be one generally used for cutting tool blades. Alternatively, the surface of metal or the like may be coated with diamond, ceramics, or the like.

Although the shape of the cutting portion 4a is not particularly limited, it usually has one or more corners 4aa so as to cut rust bumps (FIGS. 2(b) and 2(d)). reference). If the cut portion 4a has a curved surface portion 4ab (see FIG. 2(d)) in addition to the corner portion 4aa, the cut portion 4a can be inserted into the water supply pipe P as described later and advanced. It becomes easier to pass through even the bent portion. The cutting portion 4a is rotatably coupled to the joint portion 4b. Therefore, a bearing 4c can be provided between the cutting portion 4a and the joint portion 4b (see FIGS. 3 and 4(a)).

The joint portion 4 b is attached to the distal end portion of the tubular body 3 so that the rotation axis direction of the cutting portion 4 a coincides with the axial direction of the distal end portion of the tubular body 3 . If the rotation axis direction of the cutting part 4a is made to coincide with the axial direction of the tip of the tubular body 3, the cutting part 4a rotated by the tubular body 3 can be continuously pressed against the rusted nodule when cutting the rusted nodule. .

The joint part 4b preferably has an insertion part 4ba (for example, a connection structure such as an insertion type or a screwing type), and is detachably attached to the distal end of the tubular body 3 (specifically, the external tube 3a). be done. Then, the cutting tool 4 of the cutting portion 4a worn by cutting can be easily replaced with a new one, and the cutting tool 4 can be temporarily replaced with another member (for example, a camera).

The cutting tool 4 is internally formed with a fluid passage 40 that allows the fluid to flow in from the tubular body 3, bend the course of the fluid, and eject the fluid from the ejection opening 40a. By ejecting the fluid in this manner, a rotational force is generated in the cutting portion 4a with respect to the joint portion 4b. The ejection opening 40a is provided on the peripheral surface of the cutting portion 4a (see FIG. 2(c)), and as shown in FIG. can. In that case, the fluid path 40 can have a fluid inflow portion 40b, an intermediate portion 40c, and a fluid ejection portion 40d. The fluid inflow portion 40b is a portion into which fluid flows, and is normally formed along the rotation axis GA of the cutting portion 4a (see FIG. 3). The fluid ejection portion 40d is a portion that communicates with the ejection opening 40a and generally extends in a direction substantially perpendicular to the fluid inflow portion 40b. Intermediate portion 40c communicates with fluid flow portion 40b and fluid ejection portion 40d, and generally communicates substantially perpendicularly with both of them.

The rotational force of the cutting portion 4a can be controlled by controlling the ejection amount of fluid from the fluid ejector 2. FIG. The rotational force of the cutting part 4a stops the cutting part 4a so as not to damage it when excessive contact is made with the inner wall of water supply equipment (for example, the water supply pipe P, the water distribution valve S, the water pipe Q, etc., which will be described later). It is possible to control according to the state of rust bumps by applying a torque limit such as

The water supply equipment rust removing apparatus 1 having the above-described configuration has a cutting tool 4 at the head and a pipe body 3 is a joint that is a connecting portion of a water supply pipe P with water stopcocks S1 and S2, a water meter M, etc. in a residential area E. is inserted from the part of the road R and sent to the side of the water pipe Q laid underground, and as shown in FIG. It is possible to reach even the perforated part formed in the hole or the rust hump formed in the vicinity thereof.

The cutting tool 4 can remove rust bumps formed in the perforated portion formed in the water pipe Q or in the vicinity thereof. Rust bumps are likely to form due to perforations in the water pipe Q for connecting the water supply pipe P to the water pipe Q, and are particularly prone to forming when the water pipe Q is made of cast iron. For example, even if the rust bump is large enough to block the inside of the water distribution valve S, as shown in FIG. can be cut.

Next, the work of removing rust bumps formed in the perforated portion formed in the water pipe Q or in the vicinity thereof will be described. In a state in which the cutting portion 4a is brought into contact with the rust knob and a certain pressing force is applied, the fluid is introduced from the tubular body 3 and ejected from the ejection opening 40a to rotate the cutting portion 4a gradually. Rust bumps are scraped off. The scraped rust chips are discharged from the inlet-side joint where the pipe 3 is inserted through between the pipe 3 and the inner wall of the water supply pipe P together with the fluid jetted from the jetting opening 40a. Cutting continues, and when the water pipe Q and the water pipe P communicate with each other through the blocked water distribution valve S, the scraped rust debris is distributed together with the fluid jetted from the jetting opening 40a. Pushed by the tap water from the water pipe Q, it passes through between the tubular body 3 and the inner wall of the water supply pipe P and is discharged from the inlet side joint portion where the tubular body 3 is inserted. It can be confirmed that the water supply pipe Q and the water supply pipe P are communicated with each other by the increase in the flow rate of the discharged fluid (fluid and tap water ejected from the ejection opening 40a). After that, when rust dust is no longer mixed in the discharged fluid, it can be confirmed that the rust bumps have been removed.

It is also possible to attach a camera to the tip of the tube body 4 and insert it into the water supply pipe P in advance so that the distance to the rust hump and its state can be grasped. After grasping, the camera is pulled out from the water supply pipe P and replaced with the cutting tool 4. - 特許庁The cutting tool 4 of the rust removing device 1 for water supply equipment thus constructed is inserted into the water supply pipe P and positioned at a distance to the rust bump grasped in advance, and the rust bump is removed by rotating the cutting part 4a.

In addition, in order to know whether or not the cutting part 4a is smoothly rotating while the rust removal apparatus 1 is used to cut rust bumps, a stethoscope or a vibrometer is brought into contact with the tubular body 3, and the Normal rotation, stoppage, and abnormal rotation of the cutting portion 4a can be detected by sound or vibration. As a result, it is possible to check the situation during cutting of the rust hump, so that it is possible to adjust the insertion and removal of the tubular body 3 and the rotational force of the cutting portion 4a. Furthermore, it is also possible to improve workability by previously recording the waveform of the sound or vibration according to the state of the rust bumps and proceeding with the work with reference to this.

Further, instead of the camera, stethoscope, or vibrometer described above, a sensor section 4d (ultra-miniature camera, sound sensor, vibration sensor, etc.) can be incorporated in the joint section 4b as shown in FIG. Then, it can be easily known whether the cutting portion 4a is rotating smoothly. The position where the sensor part 4d is incorporated is not particularly limited. In addition, if the sensor portion 4d is a miniature camera, the state of rust bumps can be detected. It is also possible to know the state of the rust bumps during cutting, for example, by setting the field of view so that the can be seen. Reference numeral 4e in FIG. 7 indicates wiring of the sensor section 4d.

As described above, the water supply equipment rust removal device according to the embodiment of the present invention has been described, but the present invention is not limited to the above-described embodiment, and is within the scope of the matters described in the claims. Various design changes are possible. In addition, the present invention is applicable not only to the water supply pipe P, but also to any kind of water supply pipe, and is limited to the perforations formed in the water supply pipe Q or rust bumps formed in the vicinity thereof. It can also be applied to rust bumps formed in pipes of any kind of water supply equipment.

REFERENCE SIGNS LIST 1 water supply equipment rust remover 2 fluid ejector 2a ejection port of fluid ejector 3 tubular body 3a outer tube of tubular body 3b inner tube of tubular body 4 cutting tool 4a cutting portion 4aa corner portion of cutting portion 4ab curved surface of cutting portion Part 4b Joint part 4ba Insertion part of joint part 4c Bearing 4d Sensor part 4e Wiring of sensor part 40 Fluid path 40a Ejection opening of fluid path 40b Fluid inflow part of fluid path 40c Intermediate part of fluid path 40d Fluid ejection part of fluid path C Rust bump E Residential lot GA Rotational axis of cutting part of cutting tool GB Eccentric distance of ejection opening in fluid path of cutting tool M Water meter P Water supply pipe Q Water distribution pipe R Road S Distribution valve S1, S2 Water stop valve

Claims (3)

a fluid ejection device that ejects fluid from the ejection port;
a flexible tubular body having a rear end attached to the spout and guiding the fluid;
It has a cutting part having a part for cutting rust bumps at the head and a joint part to which the cutting part is rotatably connected, and the rotation axis direction of the cutting part coincides with the axial direction of the tip part of the pipe body. The joint part is attached to the distal end of the tubular body so that the fluid flows in from the tubular body. a cutting tool having a cutting portion that rotates with respect to the joint;
A water supply equipment rust removing device comprising: In the water supply equipment rust removing device according to claim 1,
The rust removing apparatus for water supply equipment, wherein the fluid passage has a portion into which the fluid flows in the direction of the rotating shaft. In the water supply equipment rust removal device according to claim 1 or 2,
The tubular body has an outer tube and an inner tube, the fluid flows through the inner tube, the outer tube is harder than the inner tube, and the joint portion is attached. Water equipment rust remover.

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