JPH09174007A - Revolving nozzle device for washing pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a revolving nozzle device for washing a pipe stably revolving a nozzle head and capable of efficiently washing the interior of the pipe by a small quantity of water. SOLUTION: A revolving nozzle device consists of the shaft member 1 capable of being connected and fixed to the leading end part of a high pressure hose 3 and a nozzle head 2 attached to the shaft member 1 in a revolvable menner. The nozzle head 2 consists of a cylindrical part 7 and a pair of the scraper parts 8a, 8b provided to the outer peripheral wall of the cylindrical part 7 in a protruding state, and the scrapers 8a, 8b are provided at positions opposed to each other so as to hold the rotary shaft of the cylindrical part 7 and high pressure water jet orifices 9a, 9b ejecting high pressure water to the outside to revolve the nozzle head 2 are provided in the respective scraper parts. The scraper parts pref. have a substantially block-like shape or a shape wherein a spherical member is provided in the leading end of the high pressure water guide pipe extended from the outer peripheral wall of the cylindrical part of the nozzle head and a nozzle guide member having bending properties may be attached to the leading end part of the shaft member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle head which is introduced into the inside of a tubular body such as a drainage pipe and is repelled by high-pressure water ejected from an ejection hole provided in the nozzle head. TECHNICAL FIELD The present invention relates to a pipe cleaning swirling nozzle device capable of cleaning the inner wall of a tubular body by rotating at a high speed, the rotational stability of which is improved, and the cleaning effect of the inner wall of the tubular body is improved. .

[0002]

2. Description of the Related Art Up to now, there have been proposed some cleaning nozzle devices for cleaning the inner wall surfaces of various tubular bodies such as sewer pipes, domestic drainage pipes and plant pipes by jetting high pressure water from a nozzle. Recently, for example, in Japanese Utility Model Laid-Open No. 6-77874, there is disclosed a nozzle device in which a nozzle head is slidably spirally along an inner wall surface of a tubular body so as to swirl the inside of the pipe. It is disclosed.

However, the actual Kaihei 6-77874
In the device of No. 3, since the nozzle head that makes a swivel motion has an eccentric structure (asymmetric structure), the rotation of the nozzle head itself becomes unstable, and the dust removal effect by the scraper part is not sufficient. There is. Further, in the case of this nozzle device, since high-pressure water is jetted outward from the position of the rotary shaft of the nozzle head, it is not possible to apply a large propulsive force of the swirling motion to the nozzle head. There were also points. Further, an apparatus in which a spherical scraper portion is provided in a state in which the head nozzle is biased is also proposed, but in the case of such an apparatus, the swirling stops when the nozzle head comes into contact with the inner wall of the pipe. However, there is also a problem that a sufficient cleaning effect cannot be obtained.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the conventional cleaning nozzle device, and can stabilize the swiveling motion of the nozzle head with a simple structure. It is an object of the present invention to provide a swirling nozzle device for pipe cleaning, which is capable of imparting a large swirling motion propulsive force to a nozzle head and efficiently cleaning the inside of a pipe with a small amount of water. The inventor of the present invention forms a pair of scraper parts in the nozzle head at axially symmetrical positions with respect to the rotation axis of the nozzle head, and provides the high-pressure water injection holes in each of the scraper parts. The propulsive force of the swirling motion can be applied, the nozzle head is well-balanced when it rotates, the high-speed rotatability of the nozzle head is stabilized, and the pair of scraper parts directly contact with the dust and the like attached to the inner wall of the tubular body. The present invention has been completed by finding that contacting and scraping significantly improves the cleaning efficiency of the inner wall surface of the tubular body.

[0005]

That is, the swirling nozzle device for pipe cleaning according to the present invention comprises a shaft body connectable and fixable to the tip of a high-pressure hose to which high-pressure water is supplied, and a rotary body with respect to the shaft body. A nozzle head that is attached so that the head nozzle is pressed against the inner wall surface of the tubular body to be cleaned by a jet of high-pressure water supplied through the shaft body, and the head nozzle spirals along the tubular body. In the swirling nozzle device for pipe cleaning, which slides and swivels on the nozzle, the nozzle head comprises a cylindrical body portion and a pair of scraper portions projectingly provided on an outer peripheral wall of the cylindrical body portion. The scraper part
The nozzle heads are present at positions opposite to each other with the rotating shaft of the cylindrical body portion interposed therebetween, and the high pressure water supplied through the shaft body is jetted to each scraper portion to the outside of the nozzle head with respect to the shaft body. It is characterized in that a high-pressure water injection hole for rotating the same is provided.

Further, according to the present invention, in the above-mentioned swirling nozzle device for cleaning a pipe, the scraper portion of the nozzle head has a substantially block shape, and the scraper of the nozzle head is provided. The part is also characterized in that a spherical body is provided at the tip of a high-pressure water guide tube extending from the outer peripheral wall of the cylindrical body part of the nozzle head. Furthermore, the present invention is also characterized in that, in the above-described pipe cleaning swirl nozzle device, a nozzle guide member having flexibility is attached to the tip end side of the shaft body.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a swirling nozzle device for pipe cleaning according to the present invention are shown in the drawings, and the present invention will be described in more detail with reference to the drawings. FIG. 1 is a diagram showing an external appearance of an example of a swirling nozzle device for pipe cleaning according to the present invention,
FIG. 2 is an exploded view showing each part that constitutes the swirling nozzle device shown in FIG. 1. FIG. 3 is a vertical cross-sectional view showing the internal structure of the nozzle head in the swirling nozzle device shown in FIG. 1, and FIG. 4 is a view showing the external appearance of the nozzle head shown in FIGS. Yes, (a) to (c) are a plan view, a front view, and a side view, respectively. Further, FIG. 5 is a vertical cross-sectional view showing the internal structure of a nozzle head having a shape different from that of the nozzle head shown in FIGS. 1 to 4, and FIG. 6 shows a nozzle guide member having flexibility at the tip. It is a figure which shows a preferable example of the attached swirling nozzle apparatus for pipe cleaning of this invention.

As shown in FIG. 1, the swirling nozzle device for cleaning a pipe of the present invention has a shaft body 1 connectable and fixable to the tip of a high pressure hose 3 to which high pressure water is supplied, and a center of the shaft body 1. The shaft body 4 is composed of a nozzle head 2 mounted so as to be rotatable around a shaft portion 4, and the shaft body 1 has a substantially cylindrical structure (see FIG. 2). As shown in FIG. 3, a male screw portion formed on the outer peripheral surface of the connecting member attached to the tip of the high-pressure hose 3 and a female screw portion 5 that can be screwed are formed on the inner wall surface of the rear end 1 of the high pressure hose 3. Has been done. The central shaft portion 4 of the shaft body 1 is provided with a high pressure water discharge port 6 as shown in FIG. 2, and the high pressure water supplied from the high pressure hose 3 to the shaft body 1 is discharged from the high pressure water discharge port 6. It is supplied to the inside of the nozzle head 2 through the outlet 6.

On the other hand, in the nozzle head 2 in the apparatus of the present invention, a substantially cylindrical cylindrical body portion 7 and a pair of scraper portions 8a, 8b projecting from the outer peripheral wall of the cylindrical body portion 7 are integrated. And a pair of scraper parts 8a, 8
b is at a position facing each other with the rotation axis of the cylindrical body portion 7 interposed therebetween (see FIGS. 1 to 4), and such a pair of scraper portions 8
The a and 8b stabilize the high-speed rotatability of the nozzle head, and the scraper portions 8a and 8b improve the scraping effect of dust and the like adhering to the inner wall surface of the pipe. In the present invention,
From the viewpoint of high-speed rotation stability and cleaning efficiency of the nozzle head,
As the scraper parts 8a and 8b, those having rounded block-shaped projections formed along the rotation axis direction as shown in FIGS. 1 to 4 are most preferable, but the shape of the scraper part is not limited to this. However, the spherical body 11 is provided at the tip of the high-pressure water guide tube 10 extending rearward from the outer peripheral wall of the cylindrical body portion 7 of the nozzle head 2 as shown in FIG. 5, for example. The nozzle head shown in FIG. 5 also exhibits excellent high-speed rotation stability and cleaning performance, like the nozzle heads shown in FIGS. However, in the case of the nozzle head having the scraper portions 8a and 8b as shown in FIG. 5, the extending direction of the high-pressure water guiding tube 10 is limited to the rear side (that is, the direction opposite to the inserting direction of the nozzle device). However, it may be on the front side (the insertion direction of the nozzle device).

In the pipe cleaning swirl nozzle device of the present invention, the scraper portions 8a, 8a of the nozzle head 2 are provided.
b is provided with high-pressure water injection holes 9a and 9b, and high-pressure water supplied through the shaft body 1 is ejected from the high-pressure water injection holes 9a and 9b to the outside to thereby eject the nozzle head 2
Rotates at high speed around the central shaft portion 4 of the shaft body 1, and high-pressure water is sprayed onto the inner wall surface of the tubular body to be cleaned, so that the inner wall surface of the pipe is cleaned. In the present invention, the high pressure water injection holes 9a and 9b are opened so that high pressure water is injected in mutually opposite directions, as shown in FIG. 4 (a).
Moreover, since the nozzle heads 2 are provided at positions apart from the rotation axis of the nozzle head 2 by a certain distance, the swirling propulsive force generated by the jet of high-pressure water becomes large. In the nozzle head of FIG. 5, the high-pressure water injection holes 9a and 9b are opened to face right on the paper surface, but in reality, the high-pressure water injection holes 9a and 9b are opened obliquely forward and obliquely rearward of the paper surface. A turning motion can be imparted to 2.

In the present invention, the cylindrical body portion 7 of the nozzle head 2 is
As shown in FIGS. 2, 3 and 5, the inner wall surface of
It is preferable to provide a plurality of grooves along the circumferential direction, and such grooves can reduce the rotational resistance of the nozzle head. In this case, one of the grooves is the shaft 1
It is provided at a position corresponding to the high-pressure water discharge port 6 provided in the central shaft portion 4 (see FIG. 3), and the high-pressure water is guided to the high-pressure water injection holes 9a and 9b through this groove.

The nozzle head 2 shown in FIGS. 1 to 4 is provided with one high-pressure water injection hole in each of the scraper parts 8a and 8b, but in the present invention, two high-pressure water injection holes are provided in each scraper part. The high-pressure water injection holes described above may be provided, and the injection direction of the high-pressure water is not limited to that illustrated in FIG. Further, it is preferable that the nozzle head 2 is provided with a high-pressure water injection hole 12 for injecting high-pressure water obliquely rearward (see FIGS. 4B and 4C).
According to 2, the cleaning effect by the high-pressure water can be further enhanced, and a force for promoting the forward movement of the nozzle device can be applied. When the nozzle head 2 having the above structure is rotatably attached to the shaft body 1, the nozzle head 2 is attached to the central shaft portion 4 of the shaft body 1 as shown in the exploded view of FIG. Insert the washer 13, spring washer 14,
It is common to screw with a fixing bolt 15.

In the nozzle device of the present invention, it is not necessary to provide a power source in addition to the high pressure water, and the swirling speed and the propulsion speed can be arbitrarily set by adjusting the direction and diameter of the injection hole, the injection water amount and the like. can do. Incidentally, in the present invention, FIG.
As shown in FIG. 3, a nozzle guide member 16 having flexibility may be attached to the tip side of the shaft body 1. In this case, the fixing bolt 15 ′ having a connection portion formed on the tip side.
The nozzle head 2 is rotatably attached to the shaft body 1 by using the above, and the nozzle guide member 16 is generally attached via such a fixing bolt 15 ′. The mounting method is not limited to that illustrated in FIG. Further, the structure of the nozzle guiding member 16 is not limited to that shown in FIG. 6 and is suitable for the nozzle device to move forward while swirling in a tubular body bent in an L shape, a U shape, or an S shape. It only needs to have a structure. The nozzle device having the structure shown in FIG. 6 is particularly suitable for cleaning the inner wall surface of the bent tubular body, and the nozzle device can be easily inserted into the tubular body.

[0014]

In the swirling nozzle device for pipe cleaning according to the present invention, since the pair of scraper parts are formed in the nozzle head at positions facing each other with the rotating shaft interposed therebetween, the rotational stability of the nozzle head is good, Moreover, the nozzle head swirls along the inner wall of the tubular body at high speed due to the repulsive force of the high-pressure water jetted from the jet holes provided in the nozzle head, and dust and the like attached to the inner wall surface of the tubular body by the pair of scraper parts. Is directly scraped off, and an excellent cleaning effect can be obtained with a small amount of water,
It is possible to realize labor saving of the drain pipe cleaning work, reduction of the work labor, and reduction of the work time. Further, the nozzle device of the present invention is applicable to tubular bodies of various thicknesses,
Further, since the nozzle device swirls in the tubular body, it is easy to clean the inner wall surface of the bent tubular body.

[Brief description of the drawings]

FIG. 1 is a view showing an appearance of an example of a swirling nozzle device for pipe cleaning according to the present invention.

FIG. 2 is an exploded view showing each part that constitutes the swirling nozzle device shown in FIG.

3 is a vertical cross-sectional view showing an internal structure of a nozzle head in the swirling nozzle device shown in FIG.

FIG. 4 is a diagram showing an appearance of the nozzle head shown in FIGS. 1 to 3, in which (a) to (c) are plan views, respectively.
It is a front view and a side view.

5 is a vertical cross-sectional view showing the internal structure of a nozzle head having a different shape from the nozzle head shown in FIGS.

FIG. 6 is a view showing a preferred example of a swirling nozzle device for pipe cleaning according to the present invention, in which a nozzle guide member having flexibility is attached to the tip.

[Explanation of symbols]

 1 Shaft Body 2 Nozzle Head 3 High Pressure Hose 4 Center Shaft Section 5 Female Thread Section 6 High Pressure Water Discharge Port 7 Cylindrical Body Section 8a, 8b Scraper Section 9a, 8b High Pressure Water Injection Hole 10 High Pressure Water Induction Pipe 11 Spherical Body 12 High Pressure Water Jet Hole 13 Washer 14 Spring washer 15 Fixing bolt

Claims (4)

[Claims] 1. A shaft body that can be connected and fixed to a tip of a high-pressure hose to which high-pressure water is supplied, and a nozzle head that is rotatably attached to the shaft body, wherein the head nozzle is A swirling nozzle device for washing a pipe, which is swung by being spirally slid along the tubular body while being pressed against the inner wall surface of the tubular body to be washed by jetting high-pressure water supplied through a shaft body. The nozzle head is composed of a cylindrical body portion and a pair of scraper portions projectingly provided on an outer peripheral wall of the cylindrical body portion, and the pair of scraper portions face each other across a rotation axis of the cylindrical body portion. Exists in
Each scraper part is provided with a high-pressure water injection hole for rotating the nozzle head with respect to the shaft by injecting high-pressure water supplied through the shaft to the outside. Swirl nozzle device for pipe cleaning. 2. The swirling nozzle device for pipe cleaning according to claim 1, wherein the scraper portion of the nozzle head has a substantially block shape. 3. The scraper portion of the nozzle head is characterized in that a spherical body is provided at the tip of a high-pressure water guiding pipe extending from the outer peripheral wall of the cylindrical portion of the nozzle head. A swirling nozzle device for pipe cleaning as described. 4. The swirling nozzle for pipe cleaning according to claim 1, wherein a nozzle guide member having flexibility is attached to a tip end side of the shaft body. apparatus.