JPH04161281A - Apparatus for washing interior of pipe - Google Patents

Abstract

PURPOSE:To reduce the amount of sludge remaining in a pipe after washing as low as possible by constituting at least one of a plurality of jet nozzles of an inclined nozzle inclined in the moving direction of a washing apparatus main body to inject washing water. CONSTITUTION:Washing water is forwardly injected into a pipe from washing nozzles 4a to send sludge forwardly along with washing action. In this state, almost all of the sludge is sent to the front of the washing robot 2 in the pipe and always allowed to flow in the outward direction of the pipe by a water stream and the amount of the sludge accumulated just in front of the robot 2 is also reduced. A rotary drive nozzle 4b is provided so that the jet direction thereof is set with respect to the revolving direction A of a rotary member 3 and the jet nozzles 4 (or turned toward said direction A). A rotary drive nozzle 4br is opposed to a rotary direction to inject a jet stream in the rotary direction. By properly adjusting the jet directions of both rotary drive nozzles 4b, rotational speed can be adjusted to a proper value.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a cleaning device that moves within a pipe to be cleaned.
This invention relates to a pipe cleaning device in which a rotating member is rotatably attached around the axis of a pipe, and the rotating member is provided with a plurality of injection nozzles for spraying cleaning water onto the inner wall surface of the pipe. Cleaning water is jetted from a jet nozzle provided on a rotating member, and is used to clean sludge and the like accumulated on the inner wall of a pipe.

[Conventional technology]

Conventionally, in such a cleaning device, the spray nozzle has been attached to a rotating member, and ultimately to the cleaning device main body, so as to be substantially perpendicular to the axis of the tube. By installing it in this manner, the jet stream from the injection nozzle collided with the inner wall surface of the pipe at a nearly right angle, and the strong impact force caused the sludge to be cut and peeled off.

[Invention or problem to be solved]

However, when such a configuration is adopted, the impact force of the jet is fully utilized for the above-mentioned cutting and peeling, but the jet has no direct effect of pushing the peeled sludge in the direction of movement of the cleaning device. (However, indirectly, the injection position of the jet stream may move with the movement of the cleaning device body,
The sludge is pushed by the cleaning water that fills the pipe or by moving. ), the effect of sending sludge to the discharge side was weak. Therefore, if sludge accumulates on the moving side of the cleaning device during cleaning, it cannot be pushed away, and as shown in Figure 5, the sludge that has been peeled off is scattered at a certain distance in the cleaned pipe. Sludge was to remain. For example, when cleaning a pipe with a total length of 15 m, the amount of this sludge can reach up to 100 kg, but depending on the properties of the sludge (viscosity, weight, etc.), some of it may remain inside the pipe. It was supposed to happen.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a pipe cleaning device that can minimize the amount of sludge remaining in the pipe after cleaning.

[Means to solve the problem]

In order to achieve this object, the pipe cleaning device according to the present invention is characterized in that at least one of the plurality of injection nozzles is an inclined nozzle that sprays cleaning water at an angle in the direction of movement of the cleaning device main body. do.

[For production]

The pipe cleaning device of the present application includes at least one inclined nozzle. The inclined nozzle sprays the washing water at an angle in the direction of movement of the main body of the washing apparatus. Therefore, the jet stream ejected from this inclined nozzle not only cuts and peels off the sludge on the inner wall surface of the pipe, but also pushes the peeled off sludge in the direction of movement of the cleaning device main body. In addition, conventionally, the cleaning water that filled the pipe after cleaning would flow to the discharge side and be discharged according to the amount of water supplied, but the cleaning water jetting out from this slanted nozzle forces the cleaning water out. They will be washed away.

〔Effect of the invention〕

Therefore, in the configuration of the present application, by providing the inclined nozzle in the pipe cleaning device, the transportation force for transporting the cut and peeled sludge in the moving direction of the cleaning device main body is significantly increased, and the sludge is cut and peeled. As the cleaning process progresses, it is reliably swept away to the moving side of the cleaning device main body, making it difficult for some of it to remain in the pipe. Furthermore, in the case of the present application, since the sludge is constantly being sent in the direction of movement of the cleaning device main body, the amount of sludge accumulated as described above is reduced, making it possible to reduce the amount of sludge remaining in the pipe as much as possible. be.

〔Example〕

A pipe cleaning robot equipped with the pipe cleaning device (1) of the present application (
2) will be explained based on the drawings. FIGS. 1(a) and 1(b) show a front view and a side sectional view of the front part of the pipe cleaning robot (2) equipped with the rotating member (3) and the injection nozzle (4) of the present application, FIG. 1(c) shows a sectional view of the rotary drive nozzle (4b), which can freely change and adjust the injection direction. Further, FIG. 2 shows an overall side view of the pipe cleaning robot (2), and FIG. 3 shows its internal structure.

First, the schematic configuration of this pipe cleaning robot (2) will be explained. This pipe cleaning robot (2) consists of a robot main body (2 m) that runs inside the pipe and an extra-pipe equipment (20) that will be installed outside the pipe.
), Otter pump (Pw), Air pump (Pa
) respectively supply cleaning water and high-pressure air for driving to the robot body (2 m) to clean the pipe inner wall surface (6) and move the robot body (2 m).

Here, control of cleaning start, stop, running start, stop, etc. of the robot main body (2 m) is performed by respective main switching valves (Vow) (Voa) disposed outside the pipe. On the other hand, to explain the configuration of the robot main body (2 m), this robot main body (2 m) has an internal pipe cleaning device (1) installed in the front part (f) and a pipe cleaning device (1) installed in the outer peripheral part (S). Traveling device (7) and control device (8) disposed in the rear part (b)
The traveling device (7) is driven by high-pressure air for driving, and the robot main body (2 m) moves forward or backward inside the pipe, and then the robot body (2 m) moves forward or backward inside the pipe, and then the cleaning device (1) or the pipe inner wall surface (6) is moved. The purpose is to clean it.

A more detailed explanation will be given based on FIG. 2.3.

In the figure, the main equipment (air motor (
ml) (m2), directional valve (Vl), pipe cleaning device (
1), injection nozzle (4), etc.) are attached to the robot body (2m) that runs inside the pipe to be cleaned, and the equipment outside the pipe (water pump (Pw
), water main switching valve (Vow), air pump (Pa
), the air main switching valve (Voa)) is placed at the outer end of the pipe to be cleaned and operated by the operator. Now, the front part Cf of this robot body (2m)>
is equipped with a pipe cleaning device (1) equipped with an injection nozzle (4), and this injection nozzle (4) is operated 40 to 50 times/
As the robot main body (2 m) moves forward while rotating at a speed of about 2 m, the sludge adhering to the inner wall surface (6) of the pipe is cleaned with a jet stream. Here, this injection nozzle (4) has
High pressure water is supplied from a high pressure water supply mechanism (supply path (Lw), water bomb (Pw), etc.) connected to the robot body (2 m). The fluid pressure of this high pressure water is 60kg/c
It is about m2 and high pressure water of about 80 f/min is supplied. Also, the inner diameter of the tip of this injection nozzle (4) is 0.3 mm.
That's about it.

On the other hand, the traveling drive of this pipe cleaning robot (2) is carried out by two air motors (ml) (m2
) is performed. This air motor (ml) (m
2) also includes a high-pressure air supply mechanism (supply path (La), high-pressure air pump (Pa) connected to the robot body (2m)
) etc.), it is driven by receiving high pressure air supply. Here, the aforementioned air motors (ml) (m2) are driven by the robot body (2m) via transmission mechanisms (Tf) and (Tb) provided at the front and rear sides of the robot body (2m), respectively. The signal is transmitted to three belt-type running units as running devices (7) arranged around the periphery.

Further, the control of forward and reverse rotation of the air motor (ml) (m2) is performed by the control device (8). Here, this control device (8) is connected to the robot body (2 m
) is controlled in accordance with the switching operation of the main air switching valve (Voa) located at the operator's hand (not shown). The pipe cleaning device (1), which is a characteristic configuration of the present application, will be explained below based on FIGS. 1(a), (b), and (c). This pipe cleaning device (1) includes a plurality of injection nozzles (4), a rotating member (3) attached to the proximal end of these injection nozzles (4), and a cleaning device main body (1 m
). This cleaning device main body (1 m) is fixed to the aforementioned robot main body (2 m), and the cleaning device main body (1 m) and the pipe to be cleaned do not rotate relative to each other. Now, the aforementioned rotating member (3) is the main body of the cleaning device (1 m).
Bearings (10) (10), rotation shaft (11)
) is attached for relative rotation. This axis coincides with the axis of the pipe cleaning robot (2) (in the cleaning state, the pipe axis (Z)). And this rotation axis (1
1) is provided with a supply path (lla) through which high-pressure water flows. 50 The rotation shaft (11) and the main body side piping (llc) are connected by a swivel joint (llb). As shown in the figure, the rotating member (3) is composed of a cylindrical member, and an injection nozzle (4) is disposed around the periphery of the rotating member (3). This injection nozzle (4) consists of four cleaning nozzles (4a) that are fixed with their injection directions inclined with respect to the inner wall surface (6) of the pipe, and two rotating nozzles that can freely change and adjust the injection direction. It consists of two types of drive nozzles (4b). In this embodiment, the cleaning nozzle (4a) is connected to the rotating member (3) in a cross shape as shown in the figure.
The pair of rotary drive nozzles (4b) are arranged in a straight line with each other, and the pair of rotationally driven nozzles (4b) are attached to one of the above-mentioned cleaning nozzles (4b).
It is attached at a position displaced by 45 degrees in the tube circumferential direction with respect to 4a). Here, as clearly shown in FIG. 1(b), the cleaning nozzle (4a) mentioned above is located on the front side (first side), which is the moving direction when the pipe cleaning robot (2) runs for cleaning.
(B) It is installed tilted to the right side in Figure 2.3). This inclination angle (α) is 10 degrees in the example.

Therefore, the collision angle (β) (see FIG. 3) of the cleaning water injected from this nozzle (4a) with respect to the pipe inner wall surface (6) is 80 degrees. As shown in FIG.
A rotatable rotating part (13) is attached to the nozzle body (12), and the rotating part (13) is configured to be set at an arbitrary angle with respect to the nozzle body (12) to adjust the injection direction. -ing

(In operating conditions, the angle of the jet is fixed.

) Here, the rotating part (13) is provided with an annular rotating flow path (4) centered around the axis (Y) of this rotating part (13), so that even if the jetting direction changes, high pressure can be maintained appropriately. The structure is such that water is ejected from the tip of the nozzle.

The operation of this pipe cleaning device (1) will be explained below. When cleaning the inside of the pipe, as mentioned above, approximately 600 kg/
cm" high pressure water is supplied, and the cleaning nozzle (4
It is injected from a) toward the pipe inner wall surface (6). FIG. 4 shows the pipe cleaning device (1) in this cleaning state, and shows the jet flow state and the sludge accumulation state.

As shown in the figure, the cleaning water is ejected from the cleaning nozzle (4a) to the front side of the pipe, and along with the cleaning action, the sludge is sent forward. In this state, almost all of the sludge is sent to the front of the pipe cleaning robot (2), and
The robot (
2) The amount of sludge accumulated in the front is also reduced.

On the other hand, the rotationally driven nozzle (4b) described above has its injection direction aligned with the rotational direction (A) of the rotating member (3) and the injection nozzle (4).
(or facing in this direction). In FIG. 1(A), the rotary drive nozzles (4b r) on the right side of the figure face each other in the rotation direction, and the rotary drive nozzles (4bl) on the left side inject jets in the direction of the rotation direction. When set in this way, the fixed member (3) and the injection nozzle (4) are rotated by the rotation drive nozzle (4br) on the right side, and the rotation drive nozzle (4b) on the left side is rotated.
l) acts to brake the aforementioned rotation. By appropriately adjusting the injection direction of these re-rotation drive nozzles (4b), a configuration is adopted in which the rotational speed can be adjusted to the above-mentioned appropriate value.

[Another example]

In the above embodiment, the entire cleaning nozzle (4a) is inclined in the direction of movement of the pipe cleaning device fl(1), but a part of it (for example, around 180 degrees in the embodiment) Only the pair of cleaning nozzles (4a) having a phase difference) are inclined, and the remaining pair (the remaining pair of cleaning nozzles (4a)) are inclined.
) may be configured to spray cleaning water perpendicularly to the pipe inner wall surface (6) as in the conventional method. Therefore, in this way, the inner wall surface of the pipe (
6) A nozzle that injects cleaning water at an angle is called an inclined nozzle.

Further, in the above-mentioned embodiment, the angle of impact of the cleaning water against the pipe inner wall surface (6) in the inclined nozzle is 80 degrees, but any type may be used as long as it has a certain degree of inclination. Especially this angle is 80~8
When the temperature was set to 5 degrees, a strong cleaning effect and a transport effect were obtained.

In the above-mentioned embodiment, an example was shown in which the pipe cleaning device (1) is installed in the pipe cleaning robot (2) equipped with a traveling device. The canal cleaning device of the present application may be attached to the tip of this arm.

It should be noted that the present invention is not limited to the structure of the attached drawings by adding or writing numerals in the claims for convenient comparison with the drawings.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the pipe cleaning device according to the present invention, and Figures 1 (A) and (B) are front and side sectional views of the pipe cleaning device, and Figure 1 (C) is a rotational drive. A sectional view of the tip of the nozzle, Figure 2 is an overall view of the cleaning robot with the pipe cleaning device installed, Figure 3 is an internal configuration diagram of the cleaning robot with the pipe cleaning device installed, and Figure 4 is the inside of the pipe with the pipe cleaning device of the present application. FIG. 5 is a diagram showing a state of cleaning inside a pipe by a conventional pipe cleaning device. (1m)...Cleaning equipment body, (3)...
・Rotating member, (4)...Injection nozzle, (6)・
...Pipe inner wall surface, (Z) ...Pipe axis.

Claims (1)

[Scope of Claims] 1. A rotating member (3) is attached to a main body (1 m) of the cleaning device that moves within the pipe to be cleaned, so as to be rotatable around the axis (Z) of the pipe; ) is provided with a plurality of injection nozzles (4) for injecting washing water onto the inner wall surface (6) of the pipe, the apparatus comprising: at least one of the plurality of injection nozzles (4);
A pipe cleaning device including an inclined nozzle that sprays the cleaning water at an angle in the direction of movement of the cleaning device main body (1 m). 2. Claim 1, wherein the angle of impingement of the cleaning water on the pipe inner wall surface (6) in the inclined nozzle is 80 to 85 degrees.
The pipe cleaning device described.