JPH04219184A - Cleaning device for inner surface of pipeline - Google Patents

Abstract

PURPOSE:To obtain a miniature cleaning device for the inner surface of a pipeline at a low cost wherein intruding operation into the pipeline is unnecessary. CONSTITUTION:A rotor 1 is rotated and driven by supplying pressurized fluid to the rotor 1 in a pipeline 17 and spouting this fluid to the outside of the rotor 1 from the nozzle holes 16, 16a, 16b and 16c formed thereto. Moreover the rotor 1 is advanced and deposit on the inner surface of the pipeline 17 is removed by the spouted fluid in a range over the whole circumference.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cleaning device for removing dirt and rust adhering to pipes in ordinary homes and buildings.

0002

[Prior Art] Dirt adheres to the inner surface of piping over time, and rust develops on the pipe itself. If this is left untreated, the piping may become clogged. Cleaning work is being carried out to remove deposits.

Conventionally, a pipe cleaning device called a Toler has been used for such cleaning work. This toler has a nozzle member fixed to the tip of a flexible hose made of stainless steel, for example, and when cleaning the inside of a pipe, the hose is first inserted into the pipe with the nozzle member first. At this time, since the inner diameter of the pipe is small, for example, 40 mm, it is difficult to properly insert the hose into the pipe, so usually the entire hose is rotated slowly by hand or power, and the hose is inserted while being pushed. . When the nozzle member at the tip of the hose reaches a predetermined position, pressurized water is fed from a pump outside the piping connected to the rear end of the hose, and the pressurized water is injected from the nozzle hole drilled in the nozzle member, and the hose While the pipe is being pulled out, pressurized fluid is sprayed onto the inner surface of the pipe to remove dirt and rust that have adhered to the inner surface of the pipe.

0004

[Problems to be Solved by the Invention] However, according to the above-mentioned conventional pipe interior cleaning device, even if it is possible to remove the deposits inside the pipe that have been strongly hit by the pressurized water jetted from the injection nozzle, it is difficult to remove the deposits on other inner surfaces. It is difficult to remove such deposits, and there is a risk that a single cleaning operation may leave unremoved deposits in the form of streaks on the inner surface of the pipe along its longitudinal direction. In particular, it is difficult to completely remove deposits such as metal rust and oil lumps.

Furthermore, if the pressure of the pressurized water that is fed to the hose is low, the effect of removing deposits will be reduced.
High-pressure water of about kg/cm2 to 300 kg/cm2 was pumped through a hose and spouted from a nozzle, but in order to obtain such high pressure, a large pump must be used. In addition, the nozzle member must be made of a material with excellent wear resistance, such as ceramics, which increases the cost of the entire device. Moreover, the connection between the nozzle member and the hose must also be strong enough to withstand high pressure, which makes it difficult to downsize the nozzle member and hose, resulting in piping with small diameters and piping with many curves. It was not possible to insert the nozzle member inside.

Furthermore, it is not easy to manually insert the nozzle member and hose into the pipe, and in particular, rotating the hose is very difficult and requires a great deal of effort and time.

[0007] An object of the present invention is to provide a pipe cleaning device which eliminates the above-mentioned conventional drawbacks with a simple structure.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a support body to which a hose is connected, a support body rotatably supported by the support body, and a supply body supplied from the hose via the support body. and a rotating body having an internal space for receiving pressurized fluid, and the pressurized fluid flowing into the internal space is directed to apply a propulsive force and rotational force to the rotating body inserted into the pipe. A piping cleaning device is proposed, characterized in that the rotary body has at least one nozzle hole formed in the rotary body to emit water to the outside of the rotary body.

At this time, it is desirable that a scraping member for scraping off deposits on the inner surface of the pipe be movably provided on the outer peripheral surface of the rotating body.

[0010] Also, the rotating body protrudes forward in the forward direction,
It is particularly advantageous to provide an elastic wire whose proximal end is immovably fixed to the support, and to the distal end of which a guide block is fixed.

[0011]

[Operation] When a rotating body is inserted into a pipe and pressurized fluid is fed to the rotating body through a hose, the pressurized fluid is ejected from the nozzle hole of the rotating body, which causes the rotating body to move against the support. It rotates, and the ejected fluid is sprayed all around the inner surface of the pipe. Moreover, this ejection of fluid provides a driving force to the rotating body, and the hose is automatically drawn into the pipe.

0012

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a pipe cleaning device according to the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a partially enlarged view of FIG. Each body is shown.

The support body 2 has a flange portion 3, a cylindrical shaft portion 4 protruding from one surface of the flange portion 3, and a hose connection portion 5 protruding from the other surface of the flange portion 3. The flange portion 3 and the shaft portion 4 are integrally formed, and a center hole 6 is formed inside them.

One end of a flexible hose 7 is fitted and fixed to the hose connection portion 5 as shown in FIG. 1, and the shaft portion 4 has a
Fluid discharge holes 8 extending radially from a central hole 6 therein
A suitable number of holes, two in the example shown in the figure, are drilled. The hose 7 is composed of, for example, a hose made of a synthetic resin hose body covered with thin stainless steel braided material.

The rotating body 1 is formed into a cylindrical shape as shown in FIGS. 4 and 5, and a support 2 is inserted into a through hole 9 inside the rotating body 1.
The shaft portion 4 of the rotating body 1 is fitted, whereby the rotary body 1 is supported by the support body 2 so as to be rotatable around its central axis, and in this state, one end surface of the rotary body 1 (the right end surface in FIG. 1) The flange portion 3 of the support body 2 is located on the side. Also, rotating body 1
An annular groove 10 is formed in the interior over the entire circumference, and this groove 10 and the outer peripheral surface of the shaft portion of the support body 2 form an internal space S.
is divided. The aforementioned fluid discharge hole 8 formed in the shaft portion 4 opens into this internal space S, and thereby the support body 2
The center hole 6 and the internal space S of the rotating body 1 communicate with each other.

The other end surface of the rotating body 1 (left end surface in FIG. 1)
A ring-shaped holding member 11 is located on the side, and a threaded portion of a bolt 14 fixed to one end of the elastic wire 13 is inserted into the center hole 12 of this holding member 11, and the threaded portion is connected to the support 2.
It is screwed into an internal thread formed in the center hole 6 of the. As a result, the tip of the center hole 6 is closed by the threaded portion of the bolt 14. By tightening the bolt 14, the bolt 14, which is integral with the elastic wire 13, the pressing member 11, and the support body 2 are integrated, and in this state, the rotating body 1 is attached to the shaft portion 4 of the support body 2.
The holding member 11 and the flange portion 13 located on both sides of the holding member 11 and the flange portion 13 prevent the holding member 11 from falling off the shaft portion 4 . The elastic wire 13 is made of, for example, a wire made by braiding thin stainless steel.

1 and 2 at the tip of the elastic wire 13.
As shown in the figure, a spherical guide block 15 is fixed integrally. Further, as clearly shown in FIGS. 4 and 5, the rotating body 1 has at least one nozzle hole 16, 16a extending from the internal space S toward the outer circumference thereof, and in the illustrated example, four nozzle holes 16, 16a.
, 16b, 16c are formed, and the direction in which these nozzle holes extend will be explained later.

When cleaning the inside of a pipe with the pipe interior cleaning device constructed as described above, the device is inserted into the pipe 17 through its end opening 18, as shown by arrow P in FIG. Insert the guide block 15 first. At this time, the other end of the hose 7 is connected to a pump (not shown) placed outside the pipe. In this way, when the device is inserted to the point where the rotating body 1 slightly enters the end opening 18 of the pipe 17, the pump is activated to forcefully feed pressurized fluid such as water or air to the hose 7. The fluid thus pumped first enters the center hole 6 of the support body 2, and then flows into the internal space S of the rotating body 1 through the fluid discharge hole 8.

The pressurized fluid thus supplied from the hose 7 via the support 2 to the internal space S of the rotating body 1 and received in the space S flows through the aforementioned nozzle holes 16, 16a, 16.
b, and 16c to the outside. At this time, the nozzle holes are arranged so that the rotating body 1 receives a propulsive force in the direction of arrow P to enter the pipe 17 and a rotational force to rotate around its axis by the pressurized fluid ejected through each nozzle hole.
The fluid ejection directions of 6, 16a, 16b, and 16c are set. That is, for convenience of explanation, the nozzle hole 16 that is parallel to the plane of the paper in FIGS. 1 and 4 will be explained. In the state shown in FIG. Against α (0°<α<90°)
, which in the example of FIG. 4 extends at an angle of α=50°. As a result, the rotating body 1 is given a propulsive force to move forward in the direction of arrow P by the fluid jetted out of the rotating body from the nozzle hole 16. Further, when viewed in the state shown in FIG. 5, the nozzle hole 16 extends in a direction other than the radial direction of the rotating body 1, in the example shown in FIG. 5, in a tangential direction of the annular groove 10. As a result, the rotating body 1 is given a rotational force by the fluid jetted out of the rotating body from the nozzle hole 16, and rotates with respect to the support body 2. The orientations of the other nozzle holes 16a, 16b, and 16c are also set so that the same effect can be obtained.

As described above, the rotating body 1, together with the support body 2 and other elements, enters the interior of the pipe 17 while being self-propelled by the action of the ejected fluid. Therefore, there is no need to push the hose 7 into the pipe or rotate it manually or by power, as in the past, and the effort required for this can be saved.

Further, the rotating body 1 rotates without entering the pipe 17, and at this time, the nozzle holes 16, 16a, 16b, 16
Since the pressurized fluid is ejected from c, it blows against the entire circumference of the inner surface of the pipe 17, removing dirt such as oil lumps and rust attached to the inner surface of the pipe 17. It can be removed by Furthermore, since the inner surface of the pipe 17 can be cleaned evenly over its entire circumference in this manner, the cleaning effect can be improved even if the pressure of the pressurized fluid is lowered to a greater extent than in the past. Moreover, since the pressure of the fluid can be lowered, the diameter of the hose 7 can be reduced, and the sizes of the rotating body 1 and the support body 2 can also be made small, and low-cost materials can be used for the materials.

As shown in FIG. 4, the outer diameter D1 is 16 mm,
Using a rotating body 1 in which the diameter D2 of the annular groove 10 is 11 mm, the inner diameter D3 of the through hole 9 is 8 mm, and the width W is 11 mm, the inner diameter is 40 m.
An experiment was carried out to clean the piping 17 of the rotor 1, and at that time, by simply setting the pressure of the pressurized fluid at 30 to 80 kg/cm2, the rotating body 1 could be reliably propelled and a sufficient cleaning effect could be achieved while rotating. I was able to raise it. Also, to obtain pressurized fluids (e.g. pressurized water) at such low pressures, it is sufficient to use a pump of up to 10 liters per minute using a 100V power supply, and such small pumps can be installed directly at the cleaning area. You can carry it with you and work with it easily. In conventional equipment, a diesel engine or 20
The pump requires a 0V power supply, and it is not easy to bring such a large pump into a small cleaning area.

Note that if a small annular groove 19 is formed on the inner peripheral surface of the through hole of the rotating body 1 as shown in FIG. 1, pressure leakage in the internal space S can be easily prevented.

Further, as described above, on the forward side of the rotary body 1 moving forward in the direction of arrow P within the pipe 17, there is a support 2.
An elastic wire 13 whose proximal end is fixed immovably protrudes from the elastic wire 13, and a guide block 15 is fixed to the tip of the elastic wire. 1 and support body 2 reliably. That is, when the guide block 15 approaches the curved portion, the block 15 first hits the inner surface of the pipe 17. Subsequently, the guide block 15 moves forward while slidingly contacting the inner surface of the piping 17 due to the propulsive force of the rotating body 1. At this time, the elastic wire 13 is bent and deformed, and the rotating body 1 follows this bending deformation.
passes through the curved section smoothly.

In the illustrated example, a plurality of grooves 20 extending in the axial direction are formed on the outer peripheral surface of the rotating body 1, and each groove 20 is scratched by a snap ring 21 wound and fixed on the outer peripheral surface. A take member 22 is movably attached. The scraping members 22 are small blade-shaped pieces made of metal, synthetic resin, rubber, etc., and when the rotating body 1 inside the pipe 17 rotates as described above, each scraping member 22 rises due to the centrifugal force. Scrape off the deposits on the inside of the piping. In this way, the cleaning effect of the inner surface of the pipe 17 can be further enhanced. As shown in FIG. 6, a scraping member 122 consisting of a chain freely attached to the rotating body 1 by a snap ring 21 may be used.

After finishing the cleaning work inside the pipe 17, the supply of fluid to the hose 7 under pressure is stopped, thereby stopping the application of propulsive force and rotational force to the rotating body 1, and then the hose 7 is moved in the direction indicated by the arrow P. By pulling in the opposite direction, the device can be easily removed from the hose 7.

[0028]

[Effects of the Invention] According to the configuration as set forth in claim 1, the rotating body can be rotated and self-propelled by the action of the pressurized fluid that cleans the inside of the piping. The inside of the piping can be effectively cleaned with the pressurized fluid. Furthermore, the device can be made smaller, and small-diameter piping can be cleaned, and the cost of the device can be reduced.

According to the configuration described in claim 2, the cleaning effect on the inner surface of the pipe can be further enhanced.

According to the configuration described in claim 3, it is possible to reliably guide the rotating body within the pipe.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a pipe cleaning device.

FIG. 2 is an exploded perspective view of each element of the pipe cleaning device.

FIG. 3 is a partially enlarged perspective view of FIG. 2;

FIG. 4 is a vertical cross-sectional view of a single rotating body.

FIG. 5 is a right side view of FIG. 4.

FIG. 6 is a perspective view showing another example of a scraping member attached to a rotating body.

[Explanation of symbols]

1 Rotating body 2 Support 7 Hose 13 Elastic wire 15 Guide block 16 Nozzle hole 16a Nozzle hole 16b Nozzle hole 16c Nozzle hole 17 Piping 22 Scraping member 122 Scraping member S　Internal space

Claims (3)

[Claims] 1. A rotating body comprising: a support to which a hose is connected; and an internal space that is rotatably supported by the support and receives pressurized fluid supplied from the hose via the support. and at least one for ejecting the pressurized fluid that has flowed into the internal space out of the rotating body in a direction that applies propulsive force and rotational force to the rotating body inserted into the pipe.
A piping cleaning device characterized in that two nozzle holes are formed in the rotating body. 2. The piping interior cleaning device according to claim 1, further comprising a movable scraping member on the outer circumferential surface of the rotating body for scraping off deposits on the inner surface of the piping. 3. An elastic wire protruding forward in the forward direction of the rotating body and having a proximal end fixed immovably to the support body, and a guide block fixed to the tip of the elastic wire. Or the pipe cleaning device described in 2.